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1 | 9f107513 | Anthony Liguori | /*
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2 | 9f107513 | Anthony Liguori | * Virtio 9p backend
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3 | 9f107513 | Anthony Liguori | *
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4 | 9f107513 | Anthony Liguori | * Copyright IBM, Corp. 2010
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5 | 9f107513 | Anthony Liguori | *
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6 | 9f107513 | Anthony Liguori | * Authors:
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7 | 9f107513 | Anthony Liguori | * Anthony Liguori <aliguori@us.ibm.com>
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8 | 9f107513 | Anthony Liguori | *
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9 | 9f107513 | Anthony Liguori | * This work is licensed under the terms of the GNU GPL, version 2. See
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10 | 9f107513 | Anthony Liguori | * the COPYING file in the top-level directory.
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11 | 9f107513 | Anthony Liguori | *
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12 | 9f107513 | Anthony Liguori | */
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13 | 9f107513 | Anthony Liguori | |
14 | 0d09e41a | Paolo Bonzini | #include "hw/virtio/virtio.h" |
15 | 0d09e41a | Paolo Bonzini | #include "hw/i386/pc.h" |
16 | 1de7afc9 | Paolo Bonzini | #include "qemu/sockets.h" |
17 | 9f107513 | Anthony Liguori | #include "virtio-9p.h" |
18 | 9f107513 | Anthony Liguori | #include "fsdev/qemu-fsdev.h" |
19 | fc22118d | Aneesh Kumar K.V | #include "virtio-9p-xattr.h" |
20 | ff06030f | Venkateswararao Jujjuri (JV) | #include "virtio-9p-coth.h" |
21 | c572f23a | Harsh Prateek Bora | #include "trace.h" |
22 | caf71f86 | Paolo Bonzini | #include "migration/migration.h" |
23 | 9f107513 | Anthony Liguori | |
24 | 7a462745 | Aneesh Kumar K.V | int open_fd_hw;
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25 | 7a462745 | Aneesh Kumar K.V | int total_open_fd;
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26 | 7a462745 | Aneesh Kumar K.V | static int open_fd_rc; |
27 | 9f107513 | Anthony Liguori | |
28 | fac4f111 | Venkateswararao Jujjuri (JV) | enum {
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29 | fac4f111 | Venkateswararao Jujjuri (JV) | Oread = 0x00,
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30 | fac4f111 | Venkateswararao Jujjuri (JV) | Owrite = 0x01,
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31 | fac4f111 | Venkateswararao Jujjuri (JV) | Ordwr = 0x02,
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32 | fac4f111 | Venkateswararao Jujjuri (JV) | Oexec = 0x03,
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33 | fac4f111 | Venkateswararao Jujjuri (JV) | Oexcl = 0x04,
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34 | fac4f111 | Venkateswararao Jujjuri (JV) | Otrunc = 0x10,
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35 | fac4f111 | Venkateswararao Jujjuri (JV) | Orexec = 0x20,
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36 | fac4f111 | Venkateswararao Jujjuri (JV) | Orclose = 0x40,
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37 | fac4f111 | Venkateswararao Jujjuri (JV) | Oappend = 0x80,
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38 | fac4f111 | Venkateswararao Jujjuri (JV) | }; |
39 | fac4f111 | Venkateswararao Jujjuri (JV) | |
40 | fac4f111 | Venkateswararao Jujjuri (JV) | static int omode_to_uflags(int8_t mode) |
41 | fac4f111 | Venkateswararao Jujjuri (JV) | { |
42 | fac4f111 | Venkateswararao Jujjuri (JV) | int ret = 0; |
43 | fac4f111 | Venkateswararao Jujjuri (JV) | |
44 | fac4f111 | Venkateswararao Jujjuri (JV) | switch (mode & 3) { |
45 | fac4f111 | Venkateswararao Jujjuri (JV) | case Oread:
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46 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_RDONLY; |
47 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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48 | fac4f111 | Venkateswararao Jujjuri (JV) | case Ordwr:
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49 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_RDWR; |
50 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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51 | fac4f111 | Venkateswararao Jujjuri (JV) | case Owrite:
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52 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_WRONLY; |
53 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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54 | fac4f111 | Venkateswararao Jujjuri (JV) | case Oexec:
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55 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_RDONLY; |
56 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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57 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
58 | fac4f111 | Venkateswararao Jujjuri (JV) | |
59 | fac4f111 | Venkateswararao Jujjuri (JV) | if (mode & Otrunc) {
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60 | fac4f111 | Venkateswararao Jujjuri (JV) | ret |= O_TRUNC; |
61 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
62 | fac4f111 | Venkateswararao Jujjuri (JV) | |
63 | fac4f111 | Venkateswararao Jujjuri (JV) | if (mode & Oappend) {
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64 | fac4f111 | Venkateswararao Jujjuri (JV) | ret |= O_APPEND; |
65 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
66 | fac4f111 | Venkateswararao Jujjuri (JV) | |
67 | fac4f111 | Venkateswararao Jujjuri (JV) | if (mode & Oexcl) {
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68 | fac4f111 | Venkateswararao Jujjuri (JV) | ret |= O_EXCL; |
69 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
70 | fac4f111 | Venkateswararao Jujjuri (JV) | |
71 | fac4f111 | Venkateswararao Jujjuri (JV) | return ret;
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72 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
73 | fac4f111 | Venkateswararao Jujjuri (JV) | |
74 | 9844081b | M. Mohan Kumar | struct dotl_openflag_map {
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75 | 9844081b | M. Mohan Kumar | int dotl_flag;
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76 | 9844081b | M. Mohan Kumar | int open_flag;
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77 | 9844081b | M. Mohan Kumar | }; |
78 | 9844081b | M. Mohan Kumar | |
79 | 9844081b | M. Mohan Kumar | static int dotl_to_open_flags(int flags) |
80 | 9844081b | M. Mohan Kumar | { |
81 | 9844081b | M. Mohan Kumar | int i;
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82 | 9844081b | M. Mohan Kumar | /*
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83 | 9844081b | M. Mohan Kumar | * We have same bits for P9_DOTL_READONLY, P9_DOTL_WRONLY
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84 | 9844081b | M. Mohan Kumar | * and P9_DOTL_NOACCESS
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85 | 9844081b | M. Mohan Kumar | */
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86 | 9844081b | M. Mohan Kumar | int oflags = flags & O_ACCMODE;
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87 | 9844081b | M. Mohan Kumar | |
88 | 9844081b | M. Mohan Kumar | struct dotl_openflag_map dotl_oflag_map[] = {
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89 | 9844081b | M. Mohan Kumar | { P9_DOTL_CREATE, O_CREAT }, |
90 | 9844081b | M. Mohan Kumar | { P9_DOTL_EXCL, O_EXCL }, |
91 | 9844081b | M. Mohan Kumar | { P9_DOTL_NOCTTY , O_NOCTTY }, |
92 | 9844081b | M. Mohan Kumar | { P9_DOTL_TRUNC, O_TRUNC }, |
93 | 9844081b | M. Mohan Kumar | { P9_DOTL_APPEND, O_APPEND }, |
94 | 9844081b | M. Mohan Kumar | { P9_DOTL_NONBLOCK, O_NONBLOCK } , |
95 | 9844081b | M. Mohan Kumar | { P9_DOTL_DSYNC, O_DSYNC }, |
96 | 9844081b | M. Mohan Kumar | { P9_DOTL_FASYNC, FASYNC }, |
97 | 9844081b | M. Mohan Kumar | { P9_DOTL_DIRECT, O_DIRECT }, |
98 | 9844081b | M. Mohan Kumar | { P9_DOTL_LARGEFILE, O_LARGEFILE }, |
99 | 9844081b | M. Mohan Kumar | { P9_DOTL_DIRECTORY, O_DIRECTORY }, |
100 | 9844081b | M. Mohan Kumar | { P9_DOTL_NOFOLLOW, O_NOFOLLOW }, |
101 | 9844081b | M. Mohan Kumar | { P9_DOTL_NOATIME, O_NOATIME }, |
102 | 9844081b | M. Mohan Kumar | { P9_DOTL_SYNC, O_SYNC }, |
103 | 9844081b | M. Mohan Kumar | }; |
104 | 9844081b | M. Mohan Kumar | |
105 | 9844081b | M. Mohan Kumar | for (i = 0; i < ARRAY_SIZE(dotl_oflag_map); i++) { |
106 | 9844081b | M. Mohan Kumar | if (flags & dotl_oflag_map[i].dotl_flag) {
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107 | 9844081b | M. Mohan Kumar | oflags |= dotl_oflag_map[i].open_flag; |
108 | 9844081b | M. Mohan Kumar | } |
109 | 9844081b | M. Mohan Kumar | } |
110 | 9844081b | M. Mohan Kumar | |
111 | 9844081b | M. Mohan Kumar | return oflags;
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112 | 9844081b | M. Mohan Kumar | } |
113 | 9844081b | M. Mohan Kumar | |
114 | 758e8e38 | Venkateswararao Jujjuri (JV) | void cred_init(FsCred *credp)
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115 | 131dcb25 | Anthony Liguori | { |
116 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_uid = -1;
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117 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_gid = -1;
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118 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_mode = -1;
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119 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_rdev = -1;
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120 | 131dcb25 | Anthony Liguori | } |
121 | 131dcb25 | Anthony Liguori | |
122 | d3ab98e6 | Aneesh Kumar K.V | static int get_dotl_openflags(V9fsState *s, int oflags) |
123 | d3ab98e6 | Aneesh Kumar K.V | { |
124 | d3ab98e6 | Aneesh Kumar K.V | int flags;
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125 | d3ab98e6 | Aneesh Kumar K.V | /*
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126 | d3ab98e6 | Aneesh Kumar K.V | * Filter the client open flags
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127 | d3ab98e6 | Aneesh Kumar K.V | */
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128 | 9844081b | M. Mohan Kumar | flags = dotl_to_open_flags(oflags); |
129 | 9844081b | M. Mohan Kumar | flags &= ~(O_NOCTTY | O_ASYNC | O_CREAT); |
130 | d3ab98e6 | Aneesh Kumar K.V | /*
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131 | d3ab98e6 | Aneesh Kumar K.V | * Ignore direct disk access hint until the server supports it.
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132 | d3ab98e6 | Aneesh Kumar K.V | */
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133 | d3ab98e6 | Aneesh Kumar K.V | flags &= ~O_DIRECT; |
134 | d3ab98e6 | Aneesh Kumar K.V | return flags;
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135 | d3ab98e6 | Aneesh Kumar K.V | } |
136 | d3ab98e6 | Aneesh Kumar K.V | |
137 | 2289be19 | Aneesh Kumar K.V | void v9fs_path_init(V9fsPath *path)
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138 | 2289be19 | Aneesh Kumar K.V | { |
139 | 2289be19 | Aneesh Kumar K.V | path->data = NULL;
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140 | 2289be19 | Aneesh Kumar K.V | path->size = 0;
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141 | 2289be19 | Aneesh Kumar K.V | } |
142 | 2289be19 | Aneesh Kumar K.V | |
143 | 2289be19 | Aneesh Kumar K.V | void v9fs_path_free(V9fsPath *path)
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144 | 2289be19 | Aneesh Kumar K.V | { |
145 | 2289be19 | Aneesh Kumar K.V | g_free(path->data); |
146 | 2289be19 | Aneesh Kumar K.V | path->data = NULL;
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147 | 2289be19 | Aneesh Kumar K.V | path->size = 0;
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148 | 2289be19 | Aneesh Kumar K.V | } |
149 | 2289be19 | Aneesh Kumar K.V | |
150 | 2289be19 | Aneesh Kumar K.V | void v9fs_path_copy(V9fsPath *lhs, V9fsPath *rhs)
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151 | 2289be19 | Aneesh Kumar K.V | { |
152 | 2289be19 | Aneesh Kumar K.V | v9fs_path_free(lhs); |
153 | 2289be19 | Aneesh Kumar K.V | lhs->data = g_malloc(rhs->size); |
154 | 2289be19 | Aneesh Kumar K.V | memcpy(lhs->data, rhs->data, rhs->size); |
155 | 2289be19 | Aneesh Kumar K.V | lhs->size = rhs->size; |
156 | 2289be19 | Aneesh Kumar K.V | } |
157 | 2289be19 | Aneesh Kumar K.V | |
158 | 2289be19 | Aneesh Kumar K.V | int v9fs_name_to_path(V9fsState *s, V9fsPath *dirpath,
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159 | 2289be19 | Aneesh Kumar K.V | const char *name, V9fsPath *path) |
160 | 2289be19 | Aneesh Kumar K.V | { |
161 | 2289be19 | Aneesh Kumar K.V | int err;
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162 | 2289be19 | Aneesh Kumar K.V | err = s->ops->name_to_path(&s->ctx, dirpath, name, path); |
163 | 2289be19 | Aneesh Kumar K.V | if (err < 0) { |
164 | 2289be19 | Aneesh Kumar K.V | err = -errno; |
165 | 2289be19 | Aneesh Kumar K.V | } |
166 | 2289be19 | Aneesh Kumar K.V | return err;
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167 | 2289be19 | Aneesh Kumar K.V | } |
168 | 2289be19 | Aneesh Kumar K.V | |
169 | 936532a4 | Malahal Naineni | /*
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170 | 936532a4 | Malahal Naineni | * Return TRUE if s1 is an ancestor of s2.
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171 | 936532a4 | Malahal Naineni | *
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172 | 936532a4 | Malahal Naineni | * E.g. "a/b" is an ancestor of "a/b/c" but not of "a/bc/d".
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173 | 936532a4 | Malahal Naineni | * As a special case, We treat s1 as ancestor of s2 if they are same!
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174 | 936532a4 | Malahal Naineni | */
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175 | 2289be19 | Aneesh Kumar K.V | static int v9fs_path_is_ancestor(V9fsPath *s1, V9fsPath *s2) |
176 | 936532a4 | Malahal Naineni | { |
177 | 2289be19 | Aneesh Kumar K.V | if (!strncmp(s1->data, s2->data, s1->size - 1)) { |
178 | 2289be19 | Aneesh Kumar K.V | if (s2->data[s1->size - 1] == '\0' || s2->data[s1->size - 1] == '/') { |
179 | 936532a4 | Malahal Naineni | return 1; |
180 | 936532a4 | Malahal Naineni | } |
181 | 936532a4 | Malahal Naineni | } |
182 | 936532a4 | Malahal Naineni | return 0; |
183 | 936532a4 | Malahal Naineni | } |
184 | 936532a4 | Malahal Naineni | |
185 | a03f7874 | Anthony Liguori | static size_t v9fs_string_size(V9fsString *str)
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186 | a03f7874 | Anthony Liguori | { |
187 | a03f7874 | Anthony Liguori | return str->size;
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188 | a03f7874 | Anthony Liguori | } |
189 | a03f7874 | Anthony Liguori | |
190 | b9cb88b0 | Aneesh Kumar K.V | /*
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191 | b9cb88b0 | Aneesh Kumar K.V | * returns 0 if fid got re-opened, 1 if not, < 0 on error */
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192 | bccacf6c | Aneesh Kumar K.V | static int v9fs_reopen_fid(V9fsPDU *pdu, V9fsFidState *f) |
193 | b9cb88b0 | Aneesh Kumar K.V | { |
194 | b9cb88b0 | Aneesh Kumar K.V | int err = 1; |
195 | b9cb88b0 | Aneesh Kumar K.V | if (f->fid_type == P9_FID_FILE) {
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196 | b9cb88b0 | Aneesh Kumar K.V | if (f->fs.fd == -1) { |
197 | b9cb88b0 | Aneesh Kumar K.V | do {
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198 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_open(pdu, f, f->open_flags); |
199 | bccacf6c | Aneesh Kumar K.V | } while (err == -EINTR && !pdu->cancelled);
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200 | b9cb88b0 | Aneesh Kumar K.V | } |
201 | b9cb88b0 | Aneesh Kumar K.V | } else if (f->fid_type == P9_FID_DIR) { |
202 | b9cb88b0 | Aneesh Kumar K.V | if (f->fs.dir == NULL) { |
203 | b9cb88b0 | Aneesh Kumar K.V | do {
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204 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_opendir(pdu, f); |
205 | bccacf6c | Aneesh Kumar K.V | } while (err == -EINTR && !pdu->cancelled);
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206 | b9cb88b0 | Aneesh Kumar K.V | } |
207 | b9cb88b0 | Aneesh Kumar K.V | } |
208 | b9cb88b0 | Aneesh Kumar K.V | return err;
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209 | b9cb88b0 | Aneesh Kumar K.V | } |
210 | b9cb88b0 | Aneesh Kumar K.V | |
211 | bccacf6c | Aneesh Kumar K.V | static V9fsFidState *get_fid(V9fsPDU *pdu, int32_t fid)
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212 | 286d5652 | Anthony Liguori | { |
213 | 7a462745 | Aneesh Kumar K.V | int err;
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214 | 286d5652 | Anthony Liguori | V9fsFidState *f; |
215 | bccacf6c | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
216 | 286d5652 | Anthony Liguori | |
217 | 286d5652 | Anthony Liguori | for (f = s->fid_list; f; f = f->next) {
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218 | 84dfb926 | Aneesh Kumar K.V | BUG_ON(f->clunked); |
219 | 286d5652 | Anthony Liguori | if (f->fid == fid) {
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220 | 7a462745 | Aneesh Kumar K.V | /*
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221 | 7a462745 | Aneesh Kumar K.V | * Update the fid ref upfront so that
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222 | 7a462745 | Aneesh Kumar K.V | * we don't get reclaimed when we yield
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223 | 7a462745 | Aneesh Kumar K.V | * in open later.
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224 | 7a462745 | Aneesh Kumar K.V | */
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225 | 84dfb926 | Aneesh Kumar K.V | f->ref++; |
226 | 7a462745 | Aneesh Kumar K.V | /*
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227 | 7a462745 | Aneesh Kumar K.V | * check whether we need to reopen the
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228 | 7a462745 | Aneesh Kumar K.V | * file. We might have closed the fd
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229 | 7a462745 | Aneesh Kumar K.V | * while trying to free up some file
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230 | 7a462745 | Aneesh Kumar K.V | * descriptors.
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231 | 7a462745 | Aneesh Kumar K.V | */
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232 | bccacf6c | Aneesh Kumar K.V | err = v9fs_reopen_fid(pdu, f); |
233 | b9cb88b0 | Aneesh Kumar K.V | if (err < 0) { |
234 | b9cb88b0 | Aneesh Kumar K.V | f->ref--; |
235 | b9cb88b0 | Aneesh Kumar K.V | return NULL; |
236 | b9cb88b0 | Aneesh Kumar K.V | } |
237 | 7a462745 | Aneesh Kumar K.V | /*
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238 | 7a462745 | Aneesh Kumar K.V | * Mark the fid as referenced so that the LRU
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239 | 7a462745 | Aneesh Kumar K.V | * reclaim won't close the file descriptor
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240 | 7a462745 | Aneesh Kumar K.V | */
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241 | 7a462745 | Aneesh Kumar K.V | f->flags |= FID_REFERENCED; |
242 | 286d5652 | Anthony Liguori | return f;
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243 | 286d5652 | Anthony Liguori | } |
244 | 286d5652 | Anthony Liguori | } |
245 | 286d5652 | Anthony Liguori | return NULL; |
246 | 286d5652 | Anthony Liguori | } |
247 | 286d5652 | Anthony Liguori | |
248 | 286d5652 | Anthony Liguori | static V9fsFidState *alloc_fid(V9fsState *s, int32_t fid)
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249 | 286d5652 | Anthony Liguori | { |
250 | 286d5652 | Anthony Liguori | V9fsFidState *f; |
251 | 286d5652 | Anthony Liguori | |
252 | 84dfb926 | Aneesh Kumar K.V | for (f = s->fid_list; f; f = f->next) {
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253 | 84dfb926 | Aneesh Kumar K.V | /* If fid is already there return NULL */
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254 | 84dfb926 | Aneesh Kumar K.V | BUG_ON(f->clunked); |
255 | 84dfb926 | Aneesh Kumar K.V | if (f->fid == fid) {
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256 | 84dfb926 | Aneesh Kumar K.V | return NULL; |
257 | 84dfb926 | Aneesh Kumar K.V | } |
258 | 286d5652 | Anthony Liguori | } |
259 | 7267c094 | Anthony Liguori | f = g_malloc0(sizeof(V9fsFidState));
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260 | 286d5652 | Anthony Liguori | f->fid = fid; |
261 | d62dbb51 | Aneesh Kumar K.V | f->fid_type = P9_FID_NONE; |
262 | 84dfb926 | Aneesh Kumar K.V | f->ref = 1;
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263 | 7a462745 | Aneesh Kumar K.V | /*
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264 | 7a462745 | Aneesh Kumar K.V | * Mark the fid as referenced so that the LRU
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265 | 7a462745 | Aneesh Kumar K.V | * reclaim won't close the file descriptor
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266 | 7a462745 | Aneesh Kumar K.V | */
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267 | 7a462745 | Aneesh Kumar K.V | f->flags |= FID_REFERENCED; |
268 | 286d5652 | Anthony Liguori | f->next = s->fid_list; |
269 | 286d5652 | Anthony Liguori | s->fid_list = f; |
270 | 286d5652 | Anthony Liguori | |
271 | 286d5652 | Anthony Liguori | return f;
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272 | 286d5652 | Anthony Liguori | } |
273 | 286d5652 | Anthony Liguori | |
274 | bccacf6c | Aneesh Kumar K.V | static int v9fs_xattr_fid_clunk(V9fsPDU *pdu, V9fsFidState *fidp) |
275 | 10b468bd | Aneesh Kumar K.V | { |
276 | 10b468bd | Aneesh Kumar K.V | int retval = 0; |
277 | 10b468bd | Aneesh Kumar K.V | |
278 | 10b468bd | Aneesh Kumar K.V | if (fidp->fs.xattr.copied_len == -1) { |
279 | 10b468bd | Aneesh Kumar K.V | /* getxattr/listxattr fid */
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280 | 10b468bd | Aneesh Kumar K.V | goto free_value;
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281 | 10b468bd | Aneesh Kumar K.V | } |
282 | 10b468bd | Aneesh Kumar K.V | /*
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283 | 10b468bd | Aneesh Kumar K.V | * if this is fid for setxattr. clunk should
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284 | 10b468bd | Aneesh Kumar K.V | * result in setxattr localcall
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285 | 10b468bd | Aneesh Kumar K.V | */
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286 | 10b468bd | Aneesh Kumar K.V | if (fidp->fs.xattr.len != fidp->fs.xattr.copied_len) {
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287 | 10b468bd | Aneesh Kumar K.V | /* clunk after partial write */
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288 | 10b468bd | Aneesh Kumar K.V | retval = -EINVAL; |
289 | 10b468bd | Aneesh Kumar K.V | goto free_out;
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290 | 10b468bd | Aneesh Kumar K.V | } |
291 | 9ed3ef26 | Aneesh Kumar K.V | if (fidp->fs.xattr.len) {
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292 | bccacf6c | Aneesh Kumar K.V | retval = v9fs_co_lsetxattr(pdu, &fidp->path, &fidp->fs.xattr.name, |
293 | 9ed3ef26 | Aneesh Kumar K.V | fidp->fs.xattr.value, |
294 | 9ed3ef26 | Aneesh Kumar K.V | fidp->fs.xattr.len, |
295 | 9ed3ef26 | Aneesh Kumar K.V | fidp->fs.xattr.flags); |
296 | 9ed3ef26 | Aneesh Kumar K.V | } else {
|
297 | bccacf6c | Aneesh Kumar K.V | retval = v9fs_co_lremovexattr(pdu, &fidp->path, &fidp->fs.xattr.name); |
298 | 9ed3ef26 | Aneesh Kumar K.V | } |
299 | 10b468bd | Aneesh Kumar K.V | free_out:
|
300 | 10b468bd | Aneesh Kumar K.V | v9fs_string_free(&fidp->fs.xattr.name); |
301 | 10b468bd | Aneesh Kumar K.V | free_value:
|
302 | 10b468bd | Aneesh Kumar K.V | if (fidp->fs.xattr.value) {
|
303 | 7267c094 | Anthony Liguori | g_free(fidp->fs.xattr.value); |
304 | 10b468bd | Aneesh Kumar K.V | } |
305 | 10b468bd | Aneesh Kumar K.V | return retval;
|
306 | 10b468bd | Aneesh Kumar K.V | } |
307 | 10b468bd | Aneesh Kumar K.V | |
308 | bccacf6c | Aneesh Kumar K.V | static int free_fid(V9fsPDU *pdu, V9fsFidState *fidp) |
309 | 286d5652 | Anthony Liguori | { |
310 | 10b468bd | Aneesh Kumar K.V | int retval = 0; |
311 | 84dfb926 | Aneesh Kumar K.V | |
312 | 84dfb926 | Aneesh Kumar K.V | if (fidp->fid_type == P9_FID_FILE) {
|
313 | 7a462745 | Aneesh Kumar K.V | /* If we reclaimed the fd no need to close */
|
314 | 7a462745 | Aneesh Kumar K.V | if (fidp->fs.fd != -1) { |
315 | cc720ddb | Aneesh Kumar K.V | retval = v9fs_co_close(pdu, &fidp->fs); |
316 | 7a462745 | Aneesh Kumar K.V | } |
317 | 84dfb926 | Aneesh Kumar K.V | } else if (fidp->fid_type == P9_FID_DIR) { |
318 | 95f65511 | Aneesh Kumar K.V | if (fidp->fs.dir != NULL) { |
319 | cc720ddb | Aneesh Kumar K.V | retval = v9fs_co_closedir(pdu, &fidp->fs); |
320 | 95f65511 | Aneesh Kumar K.V | } |
321 | 84dfb926 | Aneesh Kumar K.V | } else if (fidp->fid_type == P9_FID_XATTR) { |
322 | bccacf6c | Aneesh Kumar K.V | retval = v9fs_xattr_fid_clunk(pdu, fidp); |
323 | 84dfb926 | Aneesh Kumar K.V | } |
324 | 2289be19 | Aneesh Kumar K.V | v9fs_path_free(&fidp->path); |
325 | 84dfb926 | Aneesh Kumar K.V | g_free(fidp); |
326 | 84dfb926 | Aneesh Kumar K.V | return retval;
|
327 | 84dfb926 | Aneesh Kumar K.V | } |
328 | 84dfb926 | Aneesh Kumar K.V | |
329 | a911a182 | Aneesh Kumar K.V | static int put_fid(V9fsPDU *pdu, V9fsFidState *fidp) |
330 | 84dfb926 | Aneesh Kumar K.V | { |
331 | 84dfb926 | Aneesh Kumar K.V | BUG_ON(!fidp->ref); |
332 | 84dfb926 | Aneesh Kumar K.V | fidp->ref--; |
333 | 7a462745 | Aneesh Kumar K.V | /*
|
334 | 7a462745 | Aneesh Kumar K.V | * Don't free the fid if it is in reclaim list
|
335 | 7a462745 | Aneesh Kumar K.V | */
|
336 | 84dfb926 | Aneesh Kumar K.V | if (!fidp->ref && fidp->clunked) {
|
337 | e9a0152b | Aneesh Kumar K.V | if (fidp->fid == pdu->s->root_fid) {
|
338 | e9a0152b | Aneesh Kumar K.V | /*
|
339 | e9a0152b | Aneesh Kumar K.V | * if the clunked fid is root fid then we
|
340 | e9a0152b | Aneesh Kumar K.V | * have unmounted the fs on the client side.
|
341 | e9a0152b | Aneesh Kumar K.V | * delete the migration blocker. Ideally, this
|
342 | e9a0152b | Aneesh Kumar K.V | * should be hooked to transport close notification
|
343 | e9a0152b | Aneesh Kumar K.V | */
|
344 | e9a0152b | Aneesh Kumar K.V | if (pdu->s->migration_blocker) {
|
345 | e9a0152b | Aneesh Kumar K.V | migrate_del_blocker(pdu->s->migration_blocker); |
346 | e9a0152b | Aneesh Kumar K.V | error_free(pdu->s->migration_blocker); |
347 | e9a0152b | Aneesh Kumar K.V | pdu->s->migration_blocker = NULL;
|
348 | e9a0152b | Aneesh Kumar K.V | } |
349 | e9a0152b | Aneesh Kumar K.V | } |
350 | a911a182 | Aneesh Kumar K.V | return free_fid(pdu, fidp);
|
351 | 84dfb926 | Aneesh Kumar K.V | } |
352 | a911a182 | Aneesh Kumar K.V | return 0; |
353 | 84dfb926 | Aneesh Kumar K.V | } |
354 | 84dfb926 | Aneesh Kumar K.V | |
355 | ce421a19 | Aneesh Kumar K.V | static V9fsFidState *clunk_fid(V9fsState *s, int32_t fid)
|
356 | 84dfb926 | Aneesh Kumar K.V | { |
357 | 286d5652 | Anthony Liguori | V9fsFidState **fidpp, *fidp; |
358 | 286d5652 | Anthony Liguori | |
359 | 286d5652 | Anthony Liguori | for (fidpp = &s->fid_list; *fidpp; fidpp = &(*fidpp)->next) {
|
360 | 286d5652 | Anthony Liguori | if ((*fidpp)->fid == fid) {
|
361 | 286d5652 | Anthony Liguori | break;
|
362 | 286d5652 | Anthony Liguori | } |
363 | 286d5652 | Anthony Liguori | } |
364 | 286d5652 | Anthony Liguori | if (*fidpp == NULL) { |
365 | ce421a19 | Aneesh Kumar K.V | return NULL; |
366 | 286d5652 | Anthony Liguori | } |
367 | 286d5652 | Anthony Liguori | fidp = *fidpp; |
368 | 286d5652 | Anthony Liguori | *fidpp = fidp->next; |
369 | 84dfb926 | Aneesh Kumar K.V | fidp->clunked = 1;
|
370 | ce421a19 | Aneesh Kumar K.V | return fidp;
|
371 | 286d5652 | Anthony Liguori | } |
372 | 286d5652 | Anthony Liguori | |
373 | bccacf6c | Aneesh Kumar K.V | void v9fs_reclaim_fd(V9fsPDU *pdu)
|
374 | 7a462745 | Aneesh Kumar K.V | { |
375 | 7a462745 | Aneesh Kumar K.V | int reclaim_count = 0; |
376 | bccacf6c | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
377 | 7a462745 | Aneesh Kumar K.V | V9fsFidState *f, *reclaim_list = NULL;
|
378 | 7a462745 | Aneesh Kumar K.V | |
379 | 7a462745 | Aneesh Kumar K.V | for (f = s->fid_list; f; f = f->next) {
|
380 | 7a462745 | Aneesh Kumar K.V | /*
|
381 | 7a462745 | Aneesh Kumar K.V | * Unlink fids cannot be reclaimed. Check
|
382 | 7a462745 | Aneesh Kumar K.V | * for them and skip them. Also skip fids
|
383 | 7a462745 | Aneesh Kumar K.V | * currently being operated on.
|
384 | 7a462745 | Aneesh Kumar K.V | */
|
385 | 7a462745 | Aneesh Kumar K.V | if (f->ref || f->flags & FID_NON_RECLAIMABLE) {
|
386 | 7a462745 | Aneesh Kumar K.V | continue;
|
387 | 7a462745 | Aneesh Kumar K.V | } |
388 | 7a462745 | Aneesh Kumar K.V | /*
|
389 | 7a462745 | Aneesh Kumar K.V | * if it is a recently referenced fid
|
390 | 7a462745 | Aneesh Kumar K.V | * we leave the fid untouched and clear the
|
391 | 7a462745 | Aneesh Kumar K.V | * reference bit. We come back to it later
|
392 | 7a462745 | Aneesh Kumar K.V | * in the next iteration. (a simple LRU without
|
393 | 7a462745 | Aneesh Kumar K.V | * moving list elements around)
|
394 | 7a462745 | Aneesh Kumar K.V | */
|
395 | 7a462745 | Aneesh Kumar K.V | if (f->flags & FID_REFERENCED) {
|
396 | 7a462745 | Aneesh Kumar K.V | f->flags &= ~FID_REFERENCED; |
397 | 7a462745 | Aneesh Kumar K.V | continue;
|
398 | 7a462745 | Aneesh Kumar K.V | } |
399 | 7a462745 | Aneesh Kumar K.V | /*
|
400 | 7a462745 | Aneesh Kumar K.V | * Add fids to reclaim list.
|
401 | 7a462745 | Aneesh Kumar K.V | */
|
402 | 7a462745 | Aneesh Kumar K.V | if (f->fid_type == P9_FID_FILE) {
|
403 | 7a462745 | Aneesh Kumar K.V | if (f->fs.fd != -1) { |
404 | 7a462745 | Aneesh Kumar K.V | /*
|
405 | 7a462745 | Aneesh Kumar K.V | * Up the reference count so that
|
406 | 7a462745 | Aneesh Kumar K.V | * a clunk request won't free this fid
|
407 | 7a462745 | Aneesh Kumar K.V | */
|
408 | 7a462745 | Aneesh Kumar K.V | f->ref++; |
409 | 7a462745 | Aneesh Kumar K.V | f->rclm_lst = reclaim_list; |
410 | 7a462745 | Aneesh Kumar K.V | reclaim_list = f; |
411 | 7a462745 | Aneesh Kumar K.V | f->fs_reclaim.fd = f->fs.fd; |
412 | 7a462745 | Aneesh Kumar K.V | f->fs.fd = -1;
|
413 | 7a462745 | Aneesh Kumar K.V | reclaim_count++; |
414 | 7a462745 | Aneesh Kumar K.V | } |
415 | 95f65511 | Aneesh Kumar K.V | } else if (f->fid_type == P9_FID_DIR) { |
416 | 95f65511 | Aneesh Kumar K.V | if (f->fs.dir != NULL) { |
417 | 95f65511 | Aneesh Kumar K.V | /*
|
418 | 95f65511 | Aneesh Kumar K.V | * Up the reference count so that
|
419 | 95f65511 | Aneesh Kumar K.V | * a clunk request won't free this fid
|
420 | 95f65511 | Aneesh Kumar K.V | */
|
421 | 95f65511 | Aneesh Kumar K.V | f->ref++; |
422 | 95f65511 | Aneesh Kumar K.V | f->rclm_lst = reclaim_list; |
423 | 95f65511 | Aneesh Kumar K.V | reclaim_list = f; |
424 | 95f65511 | Aneesh Kumar K.V | f->fs_reclaim.dir = f->fs.dir; |
425 | 95f65511 | Aneesh Kumar K.V | f->fs.dir = NULL;
|
426 | 95f65511 | Aneesh Kumar K.V | reclaim_count++; |
427 | 95f65511 | Aneesh Kumar K.V | } |
428 | 7a462745 | Aneesh Kumar K.V | } |
429 | 7a462745 | Aneesh Kumar K.V | if (reclaim_count >= open_fd_rc) {
|
430 | 7a462745 | Aneesh Kumar K.V | break;
|
431 | 7a462745 | Aneesh Kumar K.V | } |
432 | 7a462745 | Aneesh Kumar K.V | } |
433 | 7a462745 | Aneesh Kumar K.V | /*
|
434 | 7a462745 | Aneesh Kumar K.V | * Now close the fid in reclaim list. Free them if they
|
435 | 7a462745 | Aneesh Kumar K.V | * are already clunked.
|
436 | 7a462745 | Aneesh Kumar K.V | */
|
437 | 7a462745 | Aneesh Kumar K.V | while (reclaim_list) {
|
438 | 7a462745 | Aneesh Kumar K.V | f = reclaim_list; |
439 | 7a462745 | Aneesh Kumar K.V | reclaim_list = f->rclm_lst; |
440 | 7a462745 | Aneesh Kumar K.V | if (f->fid_type == P9_FID_FILE) {
|
441 | cc720ddb | Aneesh Kumar K.V | v9fs_co_close(pdu, &f->fs_reclaim); |
442 | 95f65511 | Aneesh Kumar K.V | } else if (f->fid_type == P9_FID_DIR) { |
443 | cc720ddb | Aneesh Kumar K.V | v9fs_co_closedir(pdu, &f->fs_reclaim); |
444 | 7a462745 | Aneesh Kumar K.V | } |
445 | 7a462745 | Aneesh Kumar K.V | f->rclm_lst = NULL;
|
446 | 7a462745 | Aneesh Kumar K.V | /*
|
447 | 7a462745 | Aneesh Kumar K.V | * Now drop the fid reference, free it
|
448 | 7a462745 | Aneesh Kumar K.V | * if clunked.
|
449 | 7a462745 | Aneesh Kumar K.V | */
|
450 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, f); |
451 | 7a462745 | Aneesh Kumar K.V | } |
452 | 7a462745 | Aneesh Kumar K.V | } |
453 | 7a462745 | Aneesh Kumar K.V | |
454 | bccacf6c | Aneesh Kumar K.V | static int v9fs_mark_fids_unreclaim(V9fsPDU *pdu, V9fsPath *path) |
455 | 7a462745 | Aneesh Kumar K.V | { |
456 | 7a462745 | Aneesh Kumar K.V | int err;
|
457 | bccacf6c | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
458 | 7a462745 | Aneesh Kumar K.V | V9fsFidState *fidp, head_fid; |
459 | 7a462745 | Aneesh Kumar K.V | |
460 | 7a462745 | Aneesh Kumar K.V | head_fid.next = s->fid_list; |
461 | 7a462745 | Aneesh Kumar K.V | for (fidp = s->fid_list; fidp; fidp = fidp->next) {
|
462 | 2289be19 | Aneesh Kumar K.V | if (fidp->path.size != path->size) {
|
463 | 2289be19 | Aneesh Kumar K.V | continue;
|
464 | 2289be19 | Aneesh Kumar K.V | } |
465 | 2289be19 | Aneesh Kumar K.V | if (!memcmp(fidp->path.data, path->data, path->size)) {
|
466 | 7a462745 | Aneesh Kumar K.V | /* Mark the fid non reclaimable. */
|
467 | 7a462745 | Aneesh Kumar K.V | fidp->flags |= FID_NON_RECLAIMABLE; |
468 | b9cb88b0 | Aneesh Kumar K.V | |
469 | b9cb88b0 | Aneesh Kumar K.V | /* reopen the file/dir if already closed */
|
470 | bccacf6c | Aneesh Kumar K.V | err = v9fs_reopen_fid(pdu, fidp); |
471 | b9cb88b0 | Aneesh Kumar K.V | if (err < 0) { |
472 | b9cb88b0 | Aneesh Kumar K.V | return -1; |
473 | b9cb88b0 | Aneesh Kumar K.V | } |
474 | b9cb88b0 | Aneesh Kumar K.V | /*
|
475 | b9cb88b0 | Aneesh Kumar K.V | * Go back to head of fid list because
|
476 | b9cb88b0 | Aneesh Kumar K.V | * the list could have got updated when
|
477 | b9cb88b0 | Aneesh Kumar K.V | * switched to the worker thread
|
478 | b9cb88b0 | Aneesh Kumar K.V | */
|
479 | b9cb88b0 | Aneesh Kumar K.V | if (err == 0) { |
480 | 7a462745 | Aneesh Kumar K.V | fidp = &head_fid; |
481 | 7a462745 | Aneesh Kumar K.V | } |
482 | 7a462745 | Aneesh Kumar K.V | } |
483 | 7a462745 | Aneesh Kumar K.V | } |
484 | 7a462745 | Aneesh Kumar K.V | return 0; |
485 | 7a462745 | Aneesh Kumar K.V | } |
486 | 7a462745 | Aneesh Kumar K.V | |
487 | b41e2992 | Deepak C Shetty | static void virtfs_reset(V9fsPDU *pdu) |
488 | b41e2992 | Deepak C Shetty | { |
489 | b41e2992 | Deepak C Shetty | V9fsState *s = pdu->s; |
490 | b41e2992 | Deepak C Shetty | V9fsFidState *fidp = NULL;
|
491 | b41e2992 | Deepak C Shetty | |
492 | b41e2992 | Deepak C Shetty | /* Free all fids */
|
493 | b41e2992 | Deepak C Shetty | while (s->fid_list) {
|
494 | b41e2992 | Deepak C Shetty | fidp = s->fid_list; |
495 | b41e2992 | Deepak C Shetty | s->fid_list = fidp->next; |
496 | b41e2992 | Deepak C Shetty | |
497 | b41e2992 | Deepak C Shetty | if (fidp->ref) {
|
498 | b41e2992 | Deepak C Shetty | fidp->clunked = 1;
|
499 | b41e2992 | Deepak C Shetty | } else {
|
500 | b41e2992 | Deepak C Shetty | free_fid(pdu, fidp); |
501 | b41e2992 | Deepak C Shetty | } |
502 | b41e2992 | Deepak C Shetty | } |
503 | b41e2992 | Deepak C Shetty | if (fidp) {
|
504 | b41e2992 | Deepak C Shetty | /* One or more unclunked fids found... */
|
505 | b41e2992 | Deepak C Shetty | error_report("9pfs:%s: One or more uncluncked fids "
|
506 | b41e2992 | Deepak C Shetty | "found during reset", __func__);
|
507 | b41e2992 | Deepak C Shetty | } |
508 | b41e2992 | Deepak C Shetty | } |
509 | b41e2992 | Deepak C Shetty | |
510 | 286d5652 | Anthony Liguori | #define P9_QID_TYPE_DIR 0x80 |
511 | 286d5652 | Anthony Liguori | #define P9_QID_TYPE_SYMLINK 0x02 |
512 | 286d5652 | Anthony Liguori | |
513 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_DIR 0x80000000 |
514 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_APPEND 0x40000000 |
515 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_EXCL 0x20000000 |
516 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_MOUNT 0x10000000 |
517 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_AUTH 0x08000000 |
518 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_TMP 0x04000000 |
519 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SYMLINK 0x02000000 |
520 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_LINK 0x01000000 |
521 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_DEVICE 0x00800000 |
522 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_NAMED_PIPE 0x00200000 |
523 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SOCKET 0x00100000 |
524 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETUID 0x00080000 |
525 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETGID 0x00040000 |
526 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETVTX 0x00010000 |
527 | 286d5652 | Anthony Liguori | |
528 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_TYPE_BITS (P9_STAT_MODE_DIR | \
|
529 | 286d5652 | Anthony Liguori | P9_STAT_MODE_SYMLINK | \ |
530 | 286d5652 | Anthony Liguori | P9_STAT_MODE_LINK | \ |
531 | 286d5652 | Anthony Liguori | P9_STAT_MODE_DEVICE | \ |
532 | 286d5652 | Anthony Liguori | P9_STAT_MODE_NAMED_PIPE | \ |
533 | 286d5652 | Anthony Liguori | P9_STAT_MODE_SOCKET) |
534 | 286d5652 | Anthony Liguori | |
535 | 286d5652 | Anthony Liguori | /* This is the algorithm from ufs in spfs */
|
536 | 286d5652 | Anthony Liguori | static void stat_to_qid(const struct stat *stbuf, V9fsQID *qidp) |
537 | 286d5652 | Anthony Liguori | { |
538 | 286d5652 | Anthony Liguori | size_t size; |
539 | 286d5652 | Anthony Liguori | |
540 | 25427ec1 | Aneesh Kumar K.V | memset(&qidp->path, 0, sizeof(qidp->path)); |
541 | 286d5652 | Anthony Liguori | size = MIN(sizeof(stbuf->st_ino), sizeof(qidp->path)); |
542 | 286d5652 | Anthony Liguori | memcpy(&qidp->path, &stbuf->st_ino, size); |
543 | 286d5652 | Anthony Liguori | qidp->version = stbuf->st_mtime ^ (stbuf->st_size << 8);
|
544 | 286d5652 | Anthony Liguori | qidp->type = 0;
|
545 | 286d5652 | Anthony Liguori | if (S_ISDIR(stbuf->st_mode)) {
|
546 | 286d5652 | Anthony Liguori | qidp->type |= P9_QID_TYPE_DIR; |
547 | 286d5652 | Anthony Liguori | } |
548 | 286d5652 | Anthony Liguori | if (S_ISLNK(stbuf->st_mode)) {
|
549 | 286d5652 | Anthony Liguori | qidp->type |= P9_QID_TYPE_SYMLINK; |
550 | 286d5652 | Anthony Liguori | } |
551 | 286d5652 | Anthony Liguori | } |
552 | 286d5652 | Anthony Liguori | |
553 | bccacf6c | Aneesh Kumar K.V | static int fid_to_qid(V9fsPDU *pdu, V9fsFidState *fidp, V9fsQID *qidp) |
554 | 286d5652 | Anthony Liguori | { |
555 | 286d5652 | Anthony Liguori | struct stat stbuf;
|
556 | 286d5652 | Anthony Liguori | int err;
|
557 | 286d5652 | Anthony Liguori | |
558 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_lstat(pdu, &fidp->path, &stbuf); |
559 | 8c158561 | Aneesh Kumar K.V | if (err < 0) { |
560 | 286d5652 | Anthony Liguori | return err;
|
561 | 286d5652 | Anthony Liguori | } |
562 | 286d5652 | Anthony Liguori | stat_to_qid(&stbuf, qidp); |
563 | 286d5652 | Anthony Liguori | return 0; |
564 | 286d5652 | Anthony Liguori | } |
565 | 286d5652 | Anthony Liguori | |
566 | 9f107513 | Anthony Liguori | static V9fsPDU *alloc_pdu(V9fsState *s)
|
567 | 9f107513 | Anthony Liguori | { |
568 | 9f107513 | Anthony Liguori | V9fsPDU *pdu = NULL;
|
569 | 9f107513 | Anthony Liguori | |
570 | 9f107513 | Anthony Liguori | if (!QLIST_EMPTY(&s->free_list)) {
|
571 | bccacf6c | Aneesh Kumar K.V | pdu = QLIST_FIRST(&s->free_list); |
572 | bccacf6c | Aneesh Kumar K.V | QLIST_REMOVE(pdu, next); |
573 | bccacf6c | Aneesh Kumar K.V | QLIST_INSERT_HEAD(&s->active_list, pdu, next); |
574 | 9f107513 | Anthony Liguori | } |
575 | 9f107513 | Anthony Liguori | return pdu;
|
576 | 9f107513 | Anthony Liguori | } |
577 | 9f107513 | Anthony Liguori | |
578 | 9f107513 | Anthony Liguori | static void free_pdu(V9fsState *s, V9fsPDU *pdu) |
579 | 9f107513 | Anthony Liguori | { |
580 | 9f107513 | Anthony Liguori | if (pdu) {
|
581 | bccacf6c | Aneesh Kumar K.V | /*
|
582 | bccacf6c | Aneesh Kumar K.V | * Cancelled pdu are added back to the freelist
|
583 | bccacf6c | Aneesh Kumar K.V | * by flush request .
|
584 | bccacf6c | Aneesh Kumar K.V | */
|
585 | bccacf6c | Aneesh Kumar K.V | if (!pdu->cancelled) {
|
586 | bccacf6c | Aneesh Kumar K.V | QLIST_REMOVE(pdu, next); |
587 | bccacf6c | Aneesh Kumar K.V | QLIST_INSERT_HEAD(&s->free_list, pdu, next); |
588 | bccacf6c | Aneesh Kumar K.V | } |
589 | 9f107513 | Anthony Liguori | } |
590 | 9f107513 | Anthony Liguori | } |
591 | 9f107513 | Anthony Liguori | |
592 | ddca7f86 | M. Mohan Kumar | /*
|
593 | ddca7f86 | M. Mohan Kumar | * We don't do error checking for pdu_marshal/unmarshal here
|
594 | ddca7f86 | M. Mohan Kumar | * because we always expect to have enough space to encode
|
595 | ddca7f86 | M. Mohan Kumar | * error details
|
596 | ddca7f86 | M. Mohan Kumar | */
|
597 | 405a549a | Anthony Liguori | static void complete_pdu(V9fsState *s, V9fsPDU *pdu, ssize_t len) |
598 | 405a549a | Anthony Liguori | { |
599 | 405a549a | Anthony Liguori | int8_t id = pdu->id + 1; /* Response */ |
600 | 405a549a | Anthony Liguori | |
601 | 405a549a | Anthony Liguori | if (len < 0) { |
602 | 405a549a | Anthony Liguori | int err = -len;
|
603 | 8f4d1ca5 | Arun R Bharadwaj | len = 7;
|
604 | 405a549a | Anthony Liguori | |
605 | 8f4d1ca5 | Arun R Bharadwaj | if (s->proto_version != V9FS_PROTO_2000L) {
|
606 | 8f4d1ca5 | Arun R Bharadwaj | V9fsString str; |
607 | 8f4d1ca5 | Arun R Bharadwaj | |
608 | 8f4d1ca5 | Arun R Bharadwaj | str.data = strerror(err); |
609 | 8f4d1ca5 | Arun R Bharadwaj | str.size = strlen(str.data); |
610 | 8f4d1ca5 | Arun R Bharadwaj | |
611 | 8f4d1ca5 | Arun R Bharadwaj | len += pdu_marshal(pdu, len, "s", &str);
|
612 | 8f4d1ca5 | Arun R Bharadwaj | id = P9_RERROR; |
613 | 8f4d1ca5 | Arun R Bharadwaj | } |
614 | 405a549a | Anthony Liguori | |
615 | cf03eb2c | Arun R Bharadwaj | len += pdu_marshal(pdu, len, "d", err);
|
616 | 405a549a | Anthony Liguori | |
617 | 8f4d1ca5 | Arun R Bharadwaj | if (s->proto_version == V9FS_PROTO_2000L) {
|
618 | 8f4d1ca5 | Arun R Bharadwaj | id = P9_RLERROR; |
619 | 8f4d1ca5 | Arun R Bharadwaj | } |
620 | 7999f7e1 | Aneesh Kumar K.V | trace_v9fs_rerror(pdu->tag, pdu->id, err); /* Trace ERROR */
|
621 | 405a549a | Anthony Liguori | } |
622 | 405a549a | Anthony Liguori | |
623 | 405a549a | Anthony Liguori | /* fill out the header */
|
624 | 405a549a | Anthony Liguori | pdu_marshal(pdu, 0, "dbw", (int32_t)len, id, pdu->tag); |
625 | 405a549a | Anthony Liguori | |
626 | 405a549a | Anthony Liguori | /* keep these in sync */
|
627 | 405a549a | Anthony Liguori | pdu->size = len; |
628 | 405a549a | Anthony Liguori | pdu->id = id; |
629 | 405a549a | Anthony Liguori | |
630 | 405a549a | Anthony Liguori | /* push onto queue and notify */
|
631 | 405a549a | Anthony Liguori | virtqueue_push(s->vq, &pdu->elem, len); |
632 | 405a549a | Anthony Liguori | |
633 | 405a549a | Anthony Liguori | /* FIXME: we should batch these completions */
|
634 | 13daf6ca | KONRAD Frederic | virtio_notify(VIRTIO_DEVICE(s), s->vq); |
635 | 405a549a | Anthony Liguori | |
636 | bccacf6c | Aneesh Kumar K.V | /* Now wakeup anybody waiting in flush for this request */
|
637 | bccacf6c | Aneesh Kumar K.V | qemu_co_queue_next(&pdu->complete); |
638 | bccacf6c | Aneesh Kumar K.V | |
639 | 405a549a | Anthony Liguori | free_pdu(s, pdu); |
640 | 405a549a | Anthony Liguori | } |
641 | 405a549a | Anthony Liguori | |
642 | bb9e3216 | Anthony Liguori | static mode_t v9mode_to_mode(uint32_t mode, V9fsString *extension)
|
643 | bb9e3216 | Anthony Liguori | { |
644 | bb9e3216 | Anthony Liguori | mode_t ret; |
645 | bb9e3216 | Anthony Liguori | |
646 | bb9e3216 | Anthony Liguori | ret = mode & 0777;
|
647 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_DIR) {
|
648 | bb9e3216 | Anthony Liguori | ret |= S_IFDIR; |
649 | bb9e3216 | Anthony Liguori | } |
650 | bb9e3216 | Anthony Liguori | |
651 | cf03eb2c | Arun R Bharadwaj | if (mode & P9_STAT_MODE_SYMLINK) {
|
652 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFLNK; |
653 | cf03eb2c | Arun R Bharadwaj | } |
654 | cf03eb2c | Arun R Bharadwaj | if (mode & P9_STAT_MODE_SOCKET) {
|
655 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFSOCK; |
656 | cf03eb2c | Arun R Bharadwaj | } |
657 | cf03eb2c | Arun R Bharadwaj | if (mode & P9_STAT_MODE_NAMED_PIPE) {
|
658 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFIFO; |
659 | cf03eb2c | Arun R Bharadwaj | } |
660 | cf03eb2c | Arun R Bharadwaj | if (mode & P9_STAT_MODE_DEVICE) {
|
661 | c7e587b7 | Aneesh Kumar K.V | if (extension->size && extension->data[0] == 'c') { |
662 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFCHR; |
663 | cf03eb2c | Arun R Bharadwaj | } else {
|
664 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFBLK; |
665 | bb9e3216 | Anthony Liguori | } |
666 | bb9e3216 | Anthony Liguori | } |
667 | bb9e3216 | Anthony Liguori | |
668 | bb9e3216 | Anthony Liguori | if (!(ret&~0777)) { |
669 | bb9e3216 | Anthony Liguori | ret |= S_IFREG; |
670 | bb9e3216 | Anthony Liguori | } |
671 | bb9e3216 | Anthony Liguori | |
672 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETUID) {
|
673 | bb9e3216 | Anthony Liguori | ret |= S_ISUID; |
674 | bb9e3216 | Anthony Liguori | } |
675 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETGID) {
|
676 | bb9e3216 | Anthony Liguori | ret |= S_ISGID; |
677 | bb9e3216 | Anthony Liguori | } |
678 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETVTX) {
|
679 | bb9e3216 | Anthony Liguori | ret |= S_ISVTX; |
680 | bb9e3216 | Anthony Liguori | } |
681 | bb9e3216 | Anthony Liguori | |
682 | bb9e3216 | Anthony Liguori | return ret;
|
683 | bb9e3216 | Anthony Liguori | } |
684 | bb9e3216 | Anthony Liguori | |
685 | bb9e3216 | Anthony Liguori | static int donttouch_stat(V9fsStat *stat) |
686 | bb9e3216 | Anthony Liguori | { |
687 | bb9e3216 | Anthony Liguori | if (stat->type == -1 && |
688 | bb9e3216 | Anthony Liguori | stat->dev == -1 &&
|
689 | bb9e3216 | Anthony Liguori | stat->qid.type == -1 &&
|
690 | bb9e3216 | Anthony Liguori | stat->qid.version == -1 &&
|
691 | bb9e3216 | Anthony Liguori | stat->qid.path == -1 &&
|
692 | bb9e3216 | Anthony Liguori | stat->mode == -1 &&
|
693 | bb9e3216 | Anthony Liguori | stat->atime == -1 &&
|
694 | bb9e3216 | Anthony Liguori | stat->mtime == -1 &&
|
695 | bb9e3216 | Anthony Liguori | stat->length == -1 &&
|
696 | bb9e3216 | Anthony Liguori | !stat->name.size && |
697 | bb9e3216 | Anthony Liguori | !stat->uid.size && |
698 | bb9e3216 | Anthony Liguori | !stat->gid.size && |
699 | bb9e3216 | Anthony Liguori | !stat->muid.size && |
700 | bb9e3216 | Anthony Liguori | stat->n_uid == -1 &&
|
701 | bb9e3216 | Anthony Liguori | stat->n_gid == -1 &&
|
702 | bb9e3216 | Anthony Liguori | stat->n_muid == -1) {
|
703 | bb9e3216 | Anthony Liguori | return 1; |
704 | bb9e3216 | Anthony Liguori | } |
705 | bb9e3216 | Anthony Liguori | |
706 | bb9e3216 | Anthony Liguori | return 0; |
707 | bb9e3216 | Anthony Liguori | } |
708 | bb9e3216 | Anthony Liguori | |
709 | ddca7f86 | M. Mohan Kumar | static void v9fs_stat_init(V9fsStat *stat) |
710 | ddca7f86 | M. Mohan Kumar | { |
711 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&stat->name); |
712 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&stat->uid); |
713 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&stat->gid); |
714 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&stat->muid); |
715 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&stat->extension); |
716 | ddca7f86 | M. Mohan Kumar | } |
717 | ddca7f86 | M. Mohan Kumar | |
718 | bb9e3216 | Anthony Liguori | static void v9fs_stat_free(V9fsStat *stat) |
719 | bb9e3216 | Anthony Liguori | { |
720 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->name); |
721 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->uid); |
722 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->gid); |
723 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->muid); |
724 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->extension); |
725 | bb9e3216 | Anthony Liguori | } |
726 | bb9e3216 | Anthony Liguori | |
727 | bb9e3216 | Anthony Liguori | static uint32_t stat_to_v9mode(const struct stat *stbuf) |
728 | bb9e3216 | Anthony Liguori | { |
729 | bb9e3216 | Anthony Liguori | uint32_t mode; |
730 | bb9e3216 | Anthony Liguori | |
731 | bb9e3216 | Anthony Liguori | mode = stbuf->st_mode & 0777;
|
732 | bb9e3216 | Anthony Liguori | if (S_ISDIR(stbuf->st_mode)) {
|
733 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_DIR; |
734 | bb9e3216 | Anthony Liguori | } |
735 | bb9e3216 | Anthony Liguori | |
736 | cf03eb2c | Arun R Bharadwaj | if (S_ISLNK(stbuf->st_mode)) {
|
737 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SYMLINK; |
738 | cf03eb2c | Arun R Bharadwaj | } |
739 | bb9e3216 | Anthony Liguori | |
740 | cf03eb2c | Arun R Bharadwaj | if (S_ISSOCK(stbuf->st_mode)) {
|
741 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SOCKET; |
742 | cf03eb2c | Arun R Bharadwaj | } |
743 | bb9e3216 | Anthony Liguori | |
744 | cf03eb2c | Arun R Bharadwaj | if (S_ISFIFO(stbuf->st_mode)) {
|
745 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_NAMED_PIPE; |
746 | cf03eb2c | Arun R Bharadwaj | } |
747 | bb9e3216 | Anthony Liguori | |
748 | cf03eb2c | Arun R Bharadwaj | if (S_ISBLK(stbuf->st_mode) || S_ISCHR(stbuf->st_mode)) {
|
749 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_DEVICE; |
750 | cf03eb2c | Arun R Bharadwaj | } |
751 | bb9e3216 | Anthony Liguori | |
752 | cf03eb2c | Arun R Bharadwaj | if (stbuf->st_mode & S_ISUID) {
|
753 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SETUID; |
754 | cf03eb2c | Arun R Bharadwaj | } |
755 | bb9e3216 | Anthony Liguori | |
756 | cf03eb2c | Arun R Bharadwaj | if (stbuf->st_mode & S_ISGID) {
|
757 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SETGID; |
758 | cf03eb2c | Arun R Bharadwaj | } |
759 | bb9e3216 | Anthony Liguori | |
760 | cf03eb2c | Arun R Bharadwaj | if (stbuf->st_mode & S_ISVTX) {
|
761 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SETVTX; |
762 | bb9e3216 | Anthony Liguori | } |
763 | bb9e3216 | Anthony Liguori | |
764 | bb9e3216 | Anthony Liguori | return mode;
|
765 | bb9e3216 | Anthony Liguori | } |
766 | bb9e3216 | Anthony Liguori | |
767 | bccacf6c | Aneesh Kumar K.V | static int stat_to_v9stat(V9fsPDU *pdu, V9fsPath *name, |
768 | bb9e3216 | Anthony Liguori | const struct stat *stbuf, |
769 | bb9e3216 | Anthony Liguori | V9fsStat *v9stat) |
770 | bb9e3216 | Anthony Liguori | { |
771 | bb9e3216 | Anthony Liguori | int err;
|
772 | bb9e3216 | Anthony Liguori | const char *str; |
773 | bb9e3216 | Anthony Liguori | |
774 | bb9e3216 | Anthony Liguori | memset(v9stat, 0, sizeof(*v9stat)); |
775 | bb9e3216 | Anthony Liguori | |
776 | bb9e3216 | Anthony Liguori | stat_to_qid(stbuf, &v9stat->qid); |
777 | bb9e3216 | Anthony Liguori | v9stat->mode = stat_to_v9mode(stbuf); |
778 | bb9e3216 | Anthony Liguori | v9stat->atime = stbuf->st_atime; |
779 | bb9e3216 | Anthony Liguori | v9stat->mtime = stbuf->st_mtime; |
780 | bb9e3216 | Anthony Liguori | v9stat->length = stbuf->st_size; |
781 | bb9e3216 | Anthony Liguori | |
782 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->uid); |
783 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->gid); |
784 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->muid); |
785 | bb9e3216 | Anthony Liguori | |
786 | cf03eb2c | Arun R Bharadwaj | v9stat->n_uid = stbuf->st_uid; |
787 | cf03eb2c | Arun R Bharadwaj | v9stat->n_gid = stbuf->st_gid; |
788 | cf03eb2c | Arun R Bharadwaj | v9stat->n_muid = 0;
|
789 | bb9e3216 | Anthony Liguori | |
790 | cf03eb2c | Arun R Bharadwaj | v9fs_string_null(&v9stat->extension); |
791 | bb9e3216 | Anthony Liguori | |
792 | cf03eb2c | Arun R Bharadwaj | if (v9stat->mode & P9_STAT_MODE_SYMLINK) {
|
793 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_readlink(pdu, name, &v9stat->extension); |
794 | 7a5ca31e | Venkateswararao Jujjuri | if (err < 0) { |
795 | cf03eb2c | Arun R Bharadwaj | return err;
|
796 | bb9e3216 | Anthony Liguori | } |
797 | cf03eb2c | Arun R Bharadwaj | } else if (v9stat->mode & P9_STAT_MODE_DEVICE) { |
798 | cf03eb2c | Arun R Bharadwaj | v9fs_string_sprintf(&v9stat->extension, "%c %u %u",
|
799 | cf03eb2c | Arun R Bharadwaj | S_ISCHR(stbuf->st_mode) ? 'c' : 'b', |
800 | cf03eb2c | Arun R Bharadwaj | major(stbuf->st_rdev), minor(stbuf->st_rdev)); |
801 | cf03eb2c | Arun R Bharadwaj | } else if (S_ISDIR(stbuf->st_mode) || S_ISREG(stbuf->st_mode)) { |
802 | c9ba47dc | Stefan Weil | v9fs_string_sprintf(&v9stat->extension, "%s %lu",
|
803 | c9ba47dc | Stefan Weil | "HARDLINKCOUNT", (unsigned long)stbuf->st_nlink); |
804 | bb9e3216 | Anthony Liguori | } |
805 | bb9e3216 | Anthony Liguori | |
806 | bb9e3216 | Anthony Liguori | str = strrchr(name->data, '/');
|
807 | bb9e3216 | Anthony Liguori | if (str) {
|
808 | bb9e3216 | Anthony Liguori | str += 1;
|
809 | bb9e3216 | Anthony Liguori | } else {
|
810 | bb9e3216 | Anthony Liguori | str = name->data; |
811 | bb9e3216 | Anthony Liguori | } |
812 | bb9e3216 | Anthony Liguori | |
813 | bb9e3216 | Anthony Liguori | v9fs_string_sprintf(&v9stat->name, "%s", str);
|
814 | bb9e3216 | Anthony Liguori | |
815 | bb9e3216 | Anthony Liguori | v9stat->size = 61 +
|
816 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->name) + |
817 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->uid) + |
818 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->gid) + |
819 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->muid) + |
820 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->extension); |
821 | bb9e3216 | Anthony Liguori | return 0; |
822 | bb9e3216 | Anthony Liguori | } |
823 | bb9e3216 | Anthony Liguori | |
824 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_MODE 0x00000001ULL |
825 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_NLINK 0x00000002ULL |
826 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_UID 0x00000004ULL |
827 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_GID 0x00000008ULL |
828 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_RDEV 0x00000010ULL |
829 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_ATIME 0x00000020ULL |
830 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_MTIME 0x00000040ULL |
831 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_CTIME 0x00000080ULL |
832 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_INO 0x00000100ULL |
833 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_SIZE 0x00000200ULL |
834 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_BLOCKS 0x00000400ULL |
835 | 00ede4c2 | Sripathi Kodi | |
836 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_BTIME 0x00000800ULL |
837 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_GEN 0x00001000ULL |
838 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_DATA_VERSION 0x00002000ULL |
839 | 00ede4c2 | Sripathi Kodi | |
840 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_BASIC 0x000007ffULL /* Mask for fields up to BLOCKS */ |
841 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_ALL 0x00003fffULL /* Mask for All fields above */ |
842 | 00ede4c2 | Sripathi Kodi | |
843 | 00ede4c2 | Sripathi Kodi | |
844 | 00ede4c2 | Sripathi Kodi | static void stat_to_v9stat_dotl(V9fsState *s, const struct stat *stbuf, |
845 | 8db21ce7 | Aneesh Kumar K.V | V9fsStatDotl *v9lstat) |
846 | 00ede4c2 | Sripathi Kodi | { |
847 | 00ede4c2 | Sripathi Kodi | memset(v9lstat, 0, sizeof(*v9lstat)); |
848 | 00ede4c2 | Sripathi Kodi | |
849 | 00ede4c2 | Sripathi Kodi | v9lstat->st_mode = stbuf->st_mode; |
850 | 00ede4c2 | Sripathi Kodi | v9lstat->st_nlink = stbuf->st_nlink; |
851 | 00ede4c2 | Sripathi Kodi | v9lstat->st_uid = stbuf->st_uid; |
852 | 00ede4c2 | Sripathi Kodi | v9lstat->st_gid = stbuf->st_gid; |
853 | 00ede4c2 | Sripathi Kodi | v9lstat->st_rdev = stbuf->st_rdev; |
854 | 00ede4c2 | Sripathi Kodi | v9lstat->st_size = stbuf->st_size; |
855 | 00ede4c2 | Sripathi Kodi | v9lstat->st_blksize = stbuf->st_blksize; |
856 | 00ede4c2 | Sripathi Kodi | v9lstat->st_blocks = stbuf->st_blocks; |
857 | 00ede4c2 | Sripathi Kodi | v9lstat->st_atime_sec = stbuf->st_atime; |
858 | 00ede4c2 | Sripathi Kodi | v9lstat->st_atime_nsec = stbuf->st_atim.tv_nsec; |
859 | 00ede4c2 | Sripathi Kodi | v9lstat->st_mtime_sec = stbuf->st_mtime; |
860 | 00ede4c2 | Sripathi Kodi | v9lstat->st_mtime_nsec = stbuf->st_mtim.tv_nsec; |
861 | 00ede4c2 | Sripathi Kodi | v9lstat->st_ctime_sec = stbuf->st_ctime; |
862 | 00ede4c2 | Sripathi Kodi | v9lstat->st_ctime_nsec = stbuf->st_ctim.tv_nsec; |
863 | 00ede4c2 | Sripathi Kodi | /* Currently we only support BASIC fields in stat */
|
864 | 00ede4c2 | Sripathi Kodi | v9lstat->st_result_mask = P9_STATS_BASIC; |
865 | 00ede4c2 | Sripathi Kodi | |
866 | 00ede4c2 | Sripathi Kodi | stat_to_qid(stbuf, &v9lstat->qid); |
867 | 00ede4c2 | Sripathi Kodi | } |
868 | 00ede4c2 | Sripathi Kodi | |
869 | 1f5a89bf | Anthony Liguori | static void print_sg(struct iovec *sg, int cnt) |
870 | 1f5a89bf | Anthony Liguori | { |
871 | 1f5a89bf | Anthony Liguori | int i;
|
872 | 1f5a89bf | Anthony Liguori | |
873 | 1f5a89bf | Anthony Liguori | printf("sg[%d]: {", cnt);
|
874 | 1f5a89bf | Anthony Liguori | for (i = 0; i < cnt; i++) { |
875 | 1f5a89bf | Anthony Liguori | if (i) {
|
876 | 1f5a89bf | Anthony Liguori | printf(", ");
|
877 | 1f5a89bf | Anthony Liguori | } |
878 | 1f5a89bf | Anthony Liguori | printf("(%p, %zd)", sg[i].iov_base, sg[i].iov_len);
|
879 | 1f5a89bf | Anthony Liguori | } |
880 | 1f5a89bf | Anthony Liguori | printf("}\n");
|
881 | 1f5a89bf | Anthony Liguori | } |
882 | 1f5a89bf | Anthony Liguori | |
883 | 2289be19 | Aneesh Kumar K.V | /* Will call this only for path name based fid */
|
884 | 2289be19 | Aneesh Kumar K.V | static void v9fs_fix_path(V9fsPath *dst, V9fsPath *src, int len) |
885 | 8cf89e00 | Anthony Liguori | { |
886 | 2289be19 | Aneesh Kumar K.V | V9fsPath str; |
887 | 2289be19 | Aneesh Kumar K.V | v9fs_path_init(&str); |
888 | 2289be19 | Aneesh Kumar K.V | v9fs_path_copy(&str, dst); |
889 | 2289be19 | Aneesh Kumar K.V | v9fs_string_sprintf((V9fsString *)dst, "%s%s", src->data, str.data+len);
|
890 | 2289be19 | Aneesh Kumar K.V | v9fs_path_free(&str); |
891 | 2289be19 | Aneesh Kumar K.V | /* +1 to include terminating NULL */
|
892 | 2289be19 | Aneesh Kumar K.V | dst->size++; |
893 | 8cf89e00 | Anthony Liguori | } |
894 | 8cf89e00 | Anthony Liguori | |
895 | 2c74c2cb | M. Mohan Kumar | static inline bool is_ro_export(FsContext *ctx) |
896 | 2c74c2cb | M. Mohan Kumar | { |
897 | 2c74c2cb | M. Mohan Kumar | return ctx->export_flags & V9FS_RDONLY;
|
898 | 2c74c2cb | M. Mohan Kumar | } |
899 | 2c74c2cb | M. Mohan Kumar | |
900 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_version(void *opaque) |
901 | 9f107513 | Anthony Liguori | { |
902 | ddca7f86 | M. Mohan Kumar | ssize_t err; |
903 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
904 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
905 | 92c1ad03 | Anthony Liguori | V9fsString version; |
906 | 92c1ad03 | Anthony Liguori | size_t offset = 7;
|
907 | 92c1ad03 | Anthony Liguori | |
908 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&version); |
909 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "ds", &s->msize, &version);
|
910 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
911 | ddca7f86 | M. Mohan Kumar | offset = err; |
912 | ddca7f86 | M. Mohan Kumar | goto out;
|
913 | ddca7f86 | M. Mohan Kumar | } |
914 | c572f23a | Harsh Prateek Bora | trace_v9fs_version(pdu->tag, pdu->id, s->msize, version.data); |
915 | 92c1ad03 | Anthony Liguori | |
916 | b41e2992 | Deepak C Shetty | virtfs_reset(pdu); |
917 | b41e2992 | Deepak C Shetty | |
918 | 84151514 | M. Mohan Kumar | if (!strcmp(version.data, "9P2000.u")) { |
919 | 84151514 | M. Mohan Kumar | s->proto_version = V9FS_PROTO_2000U; |
920 | 84151514 | M. Mohan Kumar | } else if (!strcmp(version.data, "9P2000.L")) { |
921 | 84151514 | M. Mohan Kumar | s->proto_version = V9FS_PROTO_2000L; |
922 | 84151514 | M. Mohan Kumar | } else {
|
923 | 92c1ad03 | Anthony Liguori | v9fs_string_sprintf(&version, "unknown");
|
924 | 9f107513 | Anthony Liguori | } |
925 | 92c1ad03 | Anthony Liguori | |
926 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "ds", s->msize, &version);
|
927 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
928 | ddca7f86 | M. Mohan Kumar | offset = err; |
929 | ddca7f86 | M. Mohan Kumar | goto out;
|
930 | ddca7f86 | M. Mohan Kumar | } |
931 | ddca7f86 | M. Mohan Kumar | offset += err; |
932 | c572f23a | Harsh Prateek Bora | trace_v9fs_version_return(pdu->tag, pdu->id, s->msize, version.data); |
933 | ddca7f86 | M. Mohan Kumar | out:
|
934 | 92c1ad03 | Anthony Liguori | complete_pdu(s, pdu, offset); |
935 | 92c1ad03 | Anthony Liguori | v9fs_string_free(&version); |
936 | 9f107513 | Anthony Liguori | } |
937 | 9f107513 | Anthony Liguori | |
938 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_attach(void *opaque) |
939 | 9f107513 | Anthony Liguori | { |
940 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
941 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
942 | 955efc47 | Anthony Liguori | int32_t fid, afid, n_uname; |
943 | 955efc47 | Anthony Liguori | V9fsString uname, aname; |
944 | 955efc47 | Anthony Liguori | V9fsFidState *fidp; |
945 | 955efc47 | Anthony Liguori | size_t offset = 7;
|
946 | 8c158561 | Aneesh Kumar K.V | V9fsQID qid; |
947 | 955efc47 | Anthony Liguori | ssize_t err; |
948 | 955efc47 | Anthony Liguori | |
949 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&uname); |
950 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&aname); |
951 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "ddssd", &fid,
|
952 | ddca7f86 | M. Mohan Kumar | &afid, &uname, &aname, &n_uname); |
953 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
954 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
955 | ddca7f86 | M. Mohan Kumar | } |
956 | c572f23a | Harsh Prateek Bora | trace_v9fs_attach(pdu->tag, pdu->id, fid, afid, uname.data, aname.data); |
957 | 955efc47 | Anthony Liguori | |
958 | 955efc47 | Anthony Liguori | fidp = alloc_fid(s, fid); |
959 | 955efc47 | Anthony Liguori | if (fidp == NULL) { |
960 | 955efc47 | Anthony Liguori | err = -EINVAL; |
961 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
962 | 9f107513 | Anthony Liguori | } |
963 | 955efc47 | Anthony Liguori | fidp->uid = n_uname; |
964 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_name_to_path(pdu, NULL, "/", &fidp->path); |
965 | 2289be19 | Aneesh Kumar K.V | if (err < 0) { |
966 | 2289be19 | Aneesh Kumar K.V | err = -EINVAL; |
967 | 2289be19 | Aneesh Kumar K.V | clunk_fid(s, fid); |
968 | 2289be19 | Aneesh Kumar K.V | goto out;
|
969 | 2289be19 | Aneesh Kumar K.V | } |
970 | bccacf6c | Aneesh Kumar K.V | err = fid_to_qid(pdu, fidp, &qid); |
971 | 8c158561 | Aneesh Kumar K.V | if (err < 0) { |
972 | 955efc47 | Anthony Liguori | err = -EINVAL; |
973 | 84dfb926 | Aneesh Kumar K.V | clunk_fid(s, fid); |
974 | 955efc47 | Anthony Liguori | goto out;
|
975 | 955efc47 | Anthony Liguori | } |
976 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "Q", &qid);
|
977 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
978 | ddca7f86 | M. Mohan Kumar | clunk_fid(s, fid); |
979 | ddca7f86 | M. Mohan Kumar | goto out;
|
980 | ddca7f86 | M. Mohan Kumar | } |
981 | ddca7f86 | M. Mohan Kumar | err += offset; |
982 | 7999f7e1 | Aneesh Kumar K.V | trace_v9fs_attach_return(pdu->tag, pdu->id, |
983 | 7999f7e1 | Aneesh Kumar K.V | qid.type, qid.version, qid.path); |
984 | 4cdc0789 | Aneesh Kumar K.V | /*
|
985 | 4cdc0789 | Aneesh Kumar K.V | * disable migration if we haven't done already.
|
986 | 4cdc0789 | Aneesh Kumar K.V | * attach could get called multiple times for the same export.
|
987 | 4cdc0789 | Aneesh Kumar K.V | */
|
988 | 4cdc0789 | Aneesh Kumar K.V | if (!s->migration_blocker) {
|
989 | 4cdc0789 | Aneesh Kumar K.V | s->root_fid = fid; |
990 | 4cdc0789 | Aneesh Kumar K.V | error_set(&s->migration_blocker, QERR_VIRTFS_FEATURE_BLOCKS_MIGRATION, |
991 | 4cdc0789 | Aneesh Kumar K.V | s->ctx.fs_root ? s->ctx.fs_root : "NULL", s->tag);
|
992 | 4cdc0789 | Aneesh Kumar K.V | migrate_add_blocker(s->migration_blocker); |
993 | 4cdc0789 | Aneesh Kumar K.V | } |
994 | 955efc47 | Anthony Liguori | out:
|
995 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
996 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
997 | 955efc47 | Anthony Liguori | complete_pdu(s, pdu, err); |
998 | 955efc47 | Anthony Liguori | v9fs_string_free(&uname); |
999 | 955efc47 | Anthony Liguori | v9fs_string_free(&aname); |
1000 | 9f107513 | Anthony Liguori | } |
1001 | 9f107513 | Anthony Liguori | |
1002 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_stat(void *opaque) |
1003 | 9f107513 | Anthony Liguori | { |
1004 | 4da7d3fa | Anthony Liguori | int32_t fid; |
1005 | d8e0c29e | Aneesh Kumar K.V | V9fsStat v9stat; |
1006 | 4da7d3fa | Anthony Liguori | ssize_t err = 0;
|
1007 | d8e0c29e | Aneesh Kumar K.V | size_t offset = 7;
|
1008 | d8e0c29e | Aneesh Kumar K.V | struct stat stbuf;
|
1009 | d8e0c29e | Aneesh Kumar K.V | V9fsFidState *fidp; |
1010 | d8e0c29e | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
1011 | d8e0c29e | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1012 | 4da7d3fa | Anthony Liguori | |
1013 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "d", &fid);
|
1014 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1015 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
1016 | ddca7f86 | M. Mohan Kumar | } |
1017 | c572f23a | Harsh Prateek Bora | trace_v9fs_stat(pdu->tag, pdu->id, fid); |
1018 | 84dfb926 | Aneesh Kumar K.V | |
1019 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
1020 | d8e0c29e | Aneesh Kumar K.V | if (fidp == NULL) { |
1021 | 4da7d3fa | Anthony Liguori | err = -ENOENT; |
1022 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1023 | 9f107513 | Anthony Liguori | } |
1024 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_lstat(pdu, &fidp->path, &stbuf); |
1025 | d8e0c29e | Aneesh Kumar K.V | if (err < 0) { |
1026 | d8e0c29e | Aneesh Kumar K.V | goto out;
|
1027 | d8e0c29e | Aneesh Kumar K.V | } |
1028 | bccacf6c | Aneesh Kumar K.V | err = stat_to_v9stat(pdu, &fidp->path, &stbuf, &v9stat); |
1029 | d8e0c29e | Aneesh Kumar K.V | if (err < 0) { |
1030 | d8e0c29e | Aneesh Kumar K.V | goto out;
|
1031 | d8e0c29e | Aneesh Kumar K.V | } |
1032 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "wS", 0, &v9stat); |
1033 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1034 | ddca7f86 | M. Mohan Kumar | v9fs_stat_free(&v9stat); |
1035 | ddca7f86 | M. Mohan Kumar | goto out;
|
1036 | ddca7f86 | M. Mohan Kumar | } |
1037 | 7999f7e1 | Aneesh Kumar K.V | trace_v9fs_stat_return(pdu->tag, pdu->id, v9stat.mode, |
1038 | 7999f7e1 | Aneesh Kumar K.V | v9stat.atime, v9stat.mtime, v9stat.length); |
1039 | ddca7f86 | M. Mohan Kumar | err += offset; |
1040 | d8e0c29e | Aneesh Kumar K.V | v9fs_stat_free(&v9stat); |
1041 | 4da7d3fa | Anthony Liguori | out:
|
1042 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
1043 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1044 | d8e0c29e | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
1045 | 9f107513 | Anthony Liguori | } |
1046 | 9f107513 | Anthony Liguori | |
1047 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_getattr(void *opaque) |
1048 | 00ede4c2 | Sripathi Kodi | { |
1049 | 00ede4c2 | Sripathi Kodi | int32_t fid; |
1050 | 8db21ce7 | Aneesh Kumar K.V | size_t offset = 7;
|
1051 | 8db21ce7 | Aneesh Kumar K.V | ssize_t retval = 0;
|
1052 | 8db21ce7 | Aneesh Kumar K.V | struct stat stbuf;
|
1053 | 00ede4c2 | Sripathi Kodi | V9fsFidState *fidp; |
1054 | 00ede4c2 | Sripathi Kodi | uint64_t request_mask; |
1055 | 8db21ce7 | Aneesh Kumar K.V | V9fsStatDotl v9stat_dotl; |
1056 | 8db21ce7 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
1057 | 8db21ce7 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1058 | 00ede4c2 | Sripathi Kodi | |
1059 | ddca7f86 | M. Mohan Kumar | retval = pdu_unmarshal(pdu, offset, "dq", &fid, &request_mask);
|
1060 | ddca7f86 | M. Mohan Kumar | if (retval < 0) { |
1061 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
1062 | ddca7f86 | M. Mohan Kumar | } |
1063 | c572f23a | Harsh Prateek Bora | trace_v9fs_getattr(pdu->tag, pdu->id, fid, request_mask); |
1064 | 00ede4c2 | Sripathi Kodi | |
1065 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
1066 | 00ede4c2 | Sripathi Kodi | if (fidp == NULL) { |
1067 | 8db21ce7 | Aneesh Kumar K.V | retval = -ENOENT; |
1068 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1069 | 00ede4c2 | Sripathi Kodi | } |
1070 | 8db21ce7 | Aneesh Kumar K.V | /*
|
1071 | 8db21ce7 | Aneesh Kumar K.V | * Currently we only support BASIC fields in stat, so there is no
|
1072 | 00ede4c2 | Sripathi Kodi | * need to look at request_mask.
|
1073 | 00ede4c2 | Sripathi Kodi | */
|
1074 | bccacf6c | Aneesh Kumar K.V | retval = v9fs_co_lstat(pdu, &fidp->path, &stbuf); |
1075 | 8db21ce7 | Aneesh Kumar K.V | if (retval < 0) { |
1076 | 8db21ce7 | Aneesh Kumar K.V | goto out;
|
1077 | 8db21ce7 | Aneesh Kumar K.V | } |
1078 | 8db21ce7 | Aneesh Kumar K.V | stat_to_v9stat_dotl(s, &stbuf, &v9stat_dotl); |
1079 | e06a765e | Harsh Prateek Bora | |
1080 | e06a765e | Harsh Prateek Bora | /* fill st_gen if requested and supported by underlying fs */
|
1081 | e06a765e | Harsh Prateek Bora | if (request_mask & P9_STATS_GEN) {
|
1082 | e06a765e | Harsh Prateek Bora | retval = v9fs_co_st_gen(pdu, &fidp->path, stbuf.st_mode, &v9stat_dotl); |
1083 | e06a765e | Harsh Prateek Bora | if (retval < 0) { |
1084 | e06a765e | Harsh Prateek Bora | goto out;
|
1085 | e06a765e | Harsh Prateek Bora | } |
1086 | e06a765e | Harsh Prateek Bora | v9stat_dotl.st_result_mask |= P9_STATS_GEN; |
1087 | e06a765e | Harsh Prateek Bora | } |
1088 | ddca7f86 | M. Mohan Kumar | retval = pdu_marshal(pdu, offset, "A", &v9stat_dotl);
|
1089 | ddca7f86 | M. Mohan Kumar | if (retval < 0) { |
1090 | ddca7f86 | M. Mohan Kumar | goto out;
|
1091 | ddca7f86 | M. Mohan Kumar | } |
1092 | ddca7f86 | M. Mohan Kumar | retval += offset; |
1093 | c572f23a | Harsh Prateek Bora | trace_v9fs_getattr_return(pdu->tag, pdu->id, v9stat_dotl.st_result_mask, |
1094 | c572f23a | Harsh Prateek Bora | v9stat_dotl.st_mode, v9stat_dotl.st_uid, |
1095 | c572f23a | Harsh Prateek Bora | v9stat_dotl.st_gid); |
1096 | 7999f7e1 | Aneesh Kumar K.V | out:
|
1097 | 7999f7e1 | Aneesh Kumar K.V | put_fid(pdu, fidp); |
1098 | 7999f7e1 | Aneesh Kumar K.V | out_nofid:
|
1099 | 8db21ce7 | Aneesh Kumar K.V | complete_pdu(s, pdu, retval); |
1100 | 00ede4c2 | Sripathi Kodi | } |
1101 | 00ede4c2 | Sripathi Kodi | |
1102 | e4027caf | Aneesh Kumar K.V | /* Attribute flags */
|
1103 | e4027caf | Aneesh Kumar K.V | #define P9_ATTR_MODE (1 << 0) |
1104 | e4027caf | Aneesh Kumar K.V | #define P9_ATTR_UID (1 << 1) |
1105 | e4027caf | Aneesh Kumar K.V | #define P9_ATTR_GID (1 << 2) |
1106 | e4027caf | Aneesh Kumar K.V | #define P9_ATTR_SIZE (1 << 3) |
1107 | e4027caf | Aneesh Kumar K.V | #define P9_ATTR_ATIME (1 << 4) |
1108 | e4027caf | Aneesh Kumar K.V | #define P9_ATTR_MTIME (1 << 5) |
1109 | e4027caf | Aneesh Kumar K.V | #define P9_ATTR_CTIME (1 << 6) |
1110 | e4027caf | Aneesh Kumar K.V | #define P9_ATTR_ATIME_SET (1 << 7) |
1111 | e4027caf | Aneesh Kumar K.V | #define P9_ATTR_MTIME_SET (1 << 8) |
1112 | e4027caf | Aneesh Kumar K.V | |
1113 | e4027caf | Aneesh Kumar K.V | #define P9_ATTR_MASK 127 |
1114 | c79ce737 | Sripathi Kodi | |
1115 | 65c05f9a | Aneesh Kumar K.V | static void v9fs_setattr(void *opaque) |
1116 | c79ce737 | Sripathi Kodi | { |
1117 | 65c05f9a | Aneesh Kumar K.V | int err = 0; |
1118 | 65c05f9a | Aneesh Kumar K.V | int32_t fid; |
1119 | 65c05f9a | Aneesh Kumar K.V | V9fsFidState *fidp; |
1120 | 65c05f9a | Aneesh Kumar K.V | size_t offset = 7;
|
1121 | 65c05f9a | Aneesh Kumar K.V | V9fsIattr v9iattr; |
1122 | 65c05f9a | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
1123 | 65c05f9a | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1124 | c79ce737 | Sripathi Kodi | |
1125 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dI", &fid, &v9iattr);
|
1126 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1127 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
1128 | ddca7f86 | M. Mohan Kumar | } |
1129 | c79ce737 | Sripathi Kodi | |
1130 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
1131 | 65c05f9a | Aneesh Kumar K.V | if (fidp == NULL) { |
1132 | 65c05f9a | Aneesh Kumar K.V | err = -EINVAL; |
1133 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1134 | c79ce737 | Sripathi Kodi | } |
1135 | e4027caf | Aneesh Kumar K.V | if (v9iattr.valid & P9_ATTR_MODE) {
|
1136 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_chmod(pdu, &fidp->path, v9iattr.mode); |
1137 | 65c05f9a | Aneesh Kumar K.V | if (err < 0) { |
1138 | 65c05f9a | Aneesh Kumar K.V | goto out;
|
1139 | c79ce737 | Sripathi Kodi | } |
1140 | c79ce737 | Sripathi Kodi | } |
1141 | e4027caf | Aneesh Kumar K.V | if (v9iattr.valid & (P9_ATTR_ATIME | P9_ATTR_MTIME)) {
|
1142 | c79ce737 | Sripathi Kodi | struct timespec times[2]; |
1143 | e4027caf | Aneesh Kumar K.V | if (v9iattr.valid & P9_ATTR_ATIME) {
|
1144 | e4027caf | Aneesh Kumar K.V | if (v9iattr.valid & P9_ATTR_ATIME_SET) {
|
1145 | 65c05f9a | Aneesh Kumar K.V | times[0].tv_sec = v9iattr.atime_sec;
|
1146 | 65c05f9a | Aneesh Kumar K.V | times[0].tv_nsec = v9iattr.atime_nsec;
|
1147 | c79ce737 | Sripathi Kodi | } else {
|
1148 | c79ce737 | Sripathi Kodi | times[0].tv_nsec = UTIME_NOW;
|
1149 | c79ce737 | Sripathi Kodi | } |
1150 | c79ce737 | Sripathi Kodi | } else {
|
1151 | c79ce737 | Sripathi Kodi | times[0].tv_nsec = UTIME_OMIT;
|
1152 | c79ce737 | Sripathi Kodi | } |
1153 | e4027caf | Aneesh Kumar K.V | if (v9iattr.valid & P9_ATTR_MTIME) {
|
1154 | e4027caf | Aneesh Kumar K.V | if (v9iattr.valid & P9_ATTR_MTIME_SET) {
|
1155 | 65c05f9a | Aneesh Kumar K.V | times[1].tv_sec = v9iattr.mtime_sec;
|
1156 | 65c05f9a | Aneesh Kumar K.V | times[1].tv_nsec = v9iattr.mtime_nsec;
|
1157 | c79ce737 | Sripathi Kodi | } else {
|
1158 | c79ce737 | Sripathi Kodi | times[1].tv_nsec = UTIME_NOW;
|
1159 | c79ce737 | Sripathi Kodi | } |
1160 | c79ce737 | Sripathi Kodi | } else {
|
1161 | c79ce737 | Sripathi Kodi | times[1].tv_nsec = UTIME_OMIT;
|
1162 | c79ce737 | Sripathi Kodi | } |
1163 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_utimensat(pdu, &fidp->path, times); |
1164 | 65c05f9a | Aneesh Kumar K.V | if (err < 0) { |
1165 | 65c05f9a | Aneesh Kumar K.V | goto out;
|
1166 | 65c05f9a | Aneesh Kumar K.V | } |
1167 | c79ce737 | Sripathi Kodi | } |
1168 | 65c05f9a | Aneesh Kumar K.V | /*
|
1169 | 65c05f9a | Aneesh Kumar K.V | * If the only valid entry in iattr is ctime we can call
|
1170 | 65c05f9a | Aneesh Kumar K.V | * chown(-1,-1) to update the ctime of the file
|
1171 | 65c05f9a | Aneesh Kumar K.V | */
|
1172 | e4027caf | Aneesh Kumar K.V | if ((v9iattr.valid & (P9_ATTR_UID | P9_ATTR_GID)) ||
|
1173 | e4027caf | Aneesh Kumar K.V | ((v9iattr.valid & P9_ATTR_CTIME) |
1174 | e4027caf | Aneesh Kumar K.V | && !((v9iattr.valid & P9_ATTR_MASK) & ~P9_ATTR_CTIME))) { |
1175 | e4027caf | Aneesh Kumar K.V | if (!(v9iattr.valid & P9_ATTR_UID)) {
|
1176 | 65c05f9a | Aneesh Kumar K.V | v9iattr.uid = -1;
|
1177 | 65c05f9a | Aneesh Kumar K.V | } |
1178 | e4027caf | Aneesh Kumar K.V | if (!(v9iattr.valid & P9_ATTR_GID)) {
|
1179 | 65c05f9a | Aneesh Kumar K.V | v9iattr.gid = -1;
|
1180 | 65c05f9a | Aneesh Kumar K.V | } |
1181 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_chown(pdu, &fidp->path, v9iattr.uid, |
1182 | 65c05f9a | Aneesh Kumar K.V | v9iattr.gid); |
1183 | 65c05f9a | Aneesh Kumar K.V | if (err < 0) { |
1184 | 65c05f9a | Aneesh Kumar K.V | goto out;
|
1185 | 65c05f9a | Aneesh Kumar K.V | } |
1186 | c79ce737 | Sripathi Kodi | } |
1187 | e4027caf | Aneesh Kumar K.V | if (v9iattr.valid & (P9_ATTR_SIZE)) {
|
1188 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_truncate(pdu, &fidp->path, v9iattr.size); |
1189 | 65c05f9a | Aneesh Kumar K.V | if (err < 0) { |
1190 | 65c05f9a | Aneesh Kumar K.V | goto out;
|
1191 | 65c05f9a | Aneesh Kumar K.V | } |
1192 | c79ce737 | Sripathi Kodi | } |
1193 | 65c05f9a | Aneesh Kumar K.V | err = offset; |
1194 | c79ce737 | Sripathi Kodi | out:
|
1195 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
1196 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1197 | 65c05f9a | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
1198 | c79ce737 | Sripathi Kodi | } |
1199 | c79ce737 | Sripathi Kodi | |
1200 | 3cc19c0c | Aneesh Kumar K.V | static int v9fs_walk_marshal(V9fsPDU *pdu, uint16_t nwnames, V9fsQID *qids) |
1201 | ff5e54c9 | Anthony Liguori | { |
1202 | ff5e54c9 | Anthony Liguori | int i;
|
1203 | ddca7f86 | M. Mohan Kumar | ssize_t err; |
1204 | 3cc19c0c | Aneesh Kumar K.V | size_t offset = 7;
|
1205 | ddca7f86 | M. Mohan Kumar | |
1206 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "w", nwnames);
|
1207 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1208 | ddca7f86 | M. Mohan Kumar | return err;
|
1209 | ddca7f86 | M. Mohan Kumar | } |
1210 | ddca7f86 | M. Mohan Kumar | offset += err; |
1211 | 3cc19c0c | Aneesh Kumar K.V | for (i = 0; i < nwnames; i++) { |
1212 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "Q", &qids[i]);
|
1213 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1214 | ddca7f86 | M. Mohan Kumar | return err;
|
1215 | ddca7f86 | M. Mohan Kumar | } |
1216 | ddca7f86 | M. Mohan Kumar | offset += err; |
1217 | ff5e54c9 | Anthony Liguori | } |
1218 | 3cc19c0c | Aneesh Kumar K.V | return offset;
|
1219 | ff5e54c9 | Anthony Liguori | } |
1220 | ff5e54c9 | Anthony Liguori | |
1221 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_walk(void *opaque) |
1222 | 9f107513 | Anthony Liguori | { |
1223 | 3cc19c0c | Aneesh Kumar K.V | int name_idx;
|
1224 | 3cc19c0c | Aneesh Kumar K.V | V9fsQID *qids = NULL;
|
1225 | 3cc19c0c | Aneesh Kumar K.V | int i, err = 0; |
1226 | 2289be19 | Aneesh Kumar K.V | V9fsPath dpath, path; |
1227 | 3cc19c0c | Aneesh Kumar K.V | uint16_t nwnames; |
1228 | 3cc19c0c | Aneesh Kumar K.V | struct stat stbuf;
|
1229 | 3cc19c0c | Aneesh Kumar K.V | size_t offset = 7;
|
1230 | 3cc19c0c | Aneesh Kumar K.V | int32_t fid, newfid; |
1231 | 3cc19c0c | Aneesh Kumar K.V | V9fsString *wnames = NULL;
|
1232 | 3cc19c0c | Aneesh Kumar K.V | V9fsFidState *fidp; |
1233 | 3a93113a | Dong Xu Wang | V9fsFidState *newfidp = NULL;
|
1234 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
1235 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
1236 | ff5e54c9 | Anthony Liguori | |
1237 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "ddw", &fid, &newfid, &nwnames);
|
1238 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1239 | ddca7f86 | M. Mohan Kumar | complete_pdu(s, pdu, err); |
1240 | ddca7f86 | M. Mohan Kumar | return ;
|
1241 | ddca7f86 | M. Mohan Kumar | } |
1242 | ddca7f86 | M. Mohan Kumar | offset += err; |
1243 | ff5e54c9 | Anthony Liguori | |
1244 | c572f23a | Harsh Prateek Bora | trace_v9fs_walk(pdu->tag, pdu->id, fid, newfid, nwnames); |
1245 | c572f23a | Harsh Prateek Bora | |
1246 | 3cc19c0c | Aneesh Kumar K.V | if (nwnames && nwnames <= P9_MAXWELEM) {
|
1247 | 3cc19c0c | Aneesh Kumar K.V | wnames = g_malloc0(sizeof(wnames[0]) * nwnames); |
1248 | 3cc19c0c | Aneesh Kumar K.V | qids = g_malloc0(sizeof(qids[0]) * nwnames); |
1249 | 3cc19c0c | Aneesh Kumar K.V | for (i = 0; i < nwnames; i++) { |
1250 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "s", &wnames[i]);
|
1251 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1252 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
1253 | ddca7f86 | M. Mohan Kumar | } |
1254 | ddca7f86 | M. Mohan Kumar | offset += err; |
1255 | ff5e54c9 | Anthony Liguori | } |
1256 | 3cc19c0c | Aneesh Kumar K.V | } else if (nwnames > P9_MAXWELEM) { |
1257 | 4f8dee2d | Harsh Prateek Bora | err = -EINVAL; |
1258 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1259 | ff5e54c9 | Anthony Liguori | } |
1260 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
1261 | 3cc19c0c | Aneesh Kumar K.V | if (fidp == NULL) { |
1262 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1263 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1264 | ff5e54c9 | Anthony Liguori | } |
1265 | 2289be19 | Aneesh Kumar K.V | v9fs_path_init(&dpath); |
1266 | 2289be19 | Aneesh Kumar K.V | v9fs_path_init(&path); |
1267 | 2289be19 | Aneesh Kumar K.V | /*
|
1268 | 2289be19 | Aneesh Kumar K.V | * Both dpath and path initially poin to fidp.
|
1269 | 2289be19 | Aneesh Kumar K.V | * Needed to handle request with nwnames == 0
|
1270 | 2289be19 | Aneesh Kumar K.V | */
|
1271 | 2289be19 | Aneesh Kumar K.V | v9fs_path_copy(&dpath, &fidp->path); |
1272 | 2289be19 | Aneesh Kumar K.V | v9fs_path_copy(&path, &fidp->path); |
1273 | 2289be19 | Aneesh Kumar K.V | for (name_idx = 0; name_idx < nwnames; name_idx++) { |
1274 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_name_to_path(pdu, &dpath, wnames[name_idx].data, &path); |
1275 | 2289be19 | Aneesh Kumar K.V | if (err < 0) { |
1276 | 2289be19 | Aneesh Kumar K.V | goto out;
|
1277 | 2289be19 | Aneesh Kumar K.V | } |
1278 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_lstat(pdu, &path, &stbuf); |
1279 | 2289be19 | Aneesh Kumar K.V | if (err < 0) { |
1280 | 2289be19 | Aneesh Kumar K.V | goto out;
|
1281 | 2289be19 | Aneesh Kumar K.V | } |
1282 | 2289be19 | Aneesh Kumar K.V | stat_to_qid(&stbuf, &qids[name_idx]); |
1283 | 2289be19 | Aneesh Kumar K.V | v9fs_path_copy(&dpath, &path); |
1284 | 2289be19 | Aneesh Kumar K.V | } |
1285 | ff5e54c9 | Anthony Liguori | if (fid == newfid) {
|
1286 | 3cc19c0c | Aneesh Kumar K.V | BUG_ON(fidp->fid_type != P9_FID_NONE); |
1287 | 2289be19 | Aneesh Kumar K.V | v9fs_path_copy(&fidp->path, &path); |
1288 | ff5e54c9 | Anthony Liguori | } else {
|
1289 | 3cc19c0c | Aneesh Kumar K.V | newfidp = alloc_fid(s, newfid); |
1290 | 3cc19c0c | Aneesh Kumar K.V | if (newfidp == NULL) { |
1291 | ff5e54c9 | Anthony Liguori | err = -EINVAL; |
1292 | ff5e54c9 | Anthony Liguori | goto out;
|
1293 | ff5e54c9 | Anthony Liguori | } |
1294 | 3cc19c0c | Aneesh Kumar K.V | newfidp->uid = fidp->uid; |
1295 | 2289be19 | Aneesh Kumar K.V | v9fs_path_copy(&newfidp->path, &path); |
1296 | 9f107513 | Anthony Liguori | } |
1297 | 3cc19c0c | Aneesh Kumar K.V | err = v9fs_walk_marshal(pdu, nwnames, qids); |
1298 | 7999f7e1 | Aneesh Kumar K.V | trace_v9fs_walk_return(pdu->tag, pdu->id, nwnames, qids); |
1299 | ff5e54c9 | Anthony Liguori | out:
|
1300 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
1301 | 84dfb926 | Aneesh Kumar K.V | if (newfidp) {
|
1302 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, newfidp); |
1303 | 84dfb926 | Aneesh Kumar K.V | } |
1304 | 2289be19 | Aneesh Kumar K.V | v9fs_path_free(&dpath); |
1305 | 2289be19 | Aneesh Kumar K.V | v9fs_path_free(&path); |
1306 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1307 | 3cc19c0c | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
1308 | 3cc19c0c | Aneesh Kumar K.V | if (nwnames && nwnames <= P9_MAXWELEM) {
|
1309 | 3cc19c0c | Aneesh Kumar K.V | for (name_idx = 0; name_idx < nwnames; name_idx++) { |
1310 | 3cc19c0c | Aneesh Kumar K.V | v9fs_string_free(&wnames[name_idx]); |
1311 | 3cc19c0c | Aneesh Kumar K.V | } |
1312 | 3cc19c0c | Aneesh Kumar K.V | g_free(wnames); |
1313 | 3cc19c0c | Aneesh Kumar K.V | g_free(qids); |
1314 | 3cc19c0c | Aneesh Kumar K.V | } |
1315 | 9f107513 | Anthony Liguori | } |
1316 | 9f107513 | Anthony Liguori | |
1317 | bccacf6c | Aneesh Kumar K.V | static int32_t get_iounit(V9fsPDU *pdu, V9fsPath *path)
|
1318 | 5e94c103 | M. Mohan Kumar | { |
1319 | 5e94c103 | M. Mohan Kumar | struct statfs stbuf;
|
1320 | 5e94c103 | M. Mohan Kumar | int32_t iounit = 0;
|
1321 | bccacf6c | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1322 | 5e94c103 | M. Mohan Kumar | |
1323 | 5e94c103 | M. Mohan Kumar | /*
|
1324 | 5e94c103 | M. Mohan Kumar | * iounit should be multiples of f_bsize (host filesystem block size
|
1325 | 5e94c103 | M. Mohan Kumar | * and as well as less than (client msize - P9_IOHDRSZ))
|
1326 | 5e94c103 | M. Mohan Kumar | */
|
1327 | bccacf6c | Aneesh Kumar K.V | if (!v9fs_co_statfs(pdu, path, &stbuf)) {
|
1328 | 5e94c103 | M. Mohan Kumar | iounit = stbuf.f_bsize; |
1329 | 5e94c103 | M. Mohan Kumar | iounit *= (s->msize - P9_IOHDRSZ)/stbuf.f_bsize; |
1330 | 5e94c103 | M. Mohan Kumar | } |
1331 | 5e94c103 | M. Mohan Kumar | if (!iounit) {
|
1332 | 5e94c103 | M. Mohan Kumar | iounit = s->msize - P9_IOHDRSZ; |
1333 | 5e94c103 | M. Mohan Kumar | } |
1334 | 5e94c103 | M. Mohan Kumar | return iounit;
|
1335 | 5e94c103 | M. Mohan Kumar | } |
1336 | 5e94c103 | M. Mohan Kumar | |
1337 | 857bc158 | Aneesh Kumar K.V | static void v9fs_open(void *opaque) |
1338 | 5e94c103 | M. Mohan Kumar | { |
1339 | 857bc158 | Aneesh Kumar K.V | int flags;
|
1340 | 857bc158 | Aneesh Kumar K.V | int32_t fid; |
1341 | 857bc158 | Aneesh Kumar K.V | int32_t mode; |
1342 | 857bc158 | Aneesh Kumar K.V | V9fsQID qid; |
1343 | 7999f7e1 | Aneesh Kumar K.V | int iounit = 0; |
1344 | 857bc158 | Aneesh Kumar K.V | ssize_t err = 0;
|
1345 | 857bc158 | Aneesh Kumar K.V | size_t offset = 7;
|
1346 | 857bc158 | Aneesh Kumar K.V | struct stat stbuf;
|
1347 | 857bc158 | Aneesh Kumar K.V | V9fsFidState *fidp; |
1348 | 857bc158 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
1349 | 857bc158 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1350 | 5e94c103 | M. Mohan Kumar | |
1351 | 857bc158 | Aneesh Kumar K.V | if (s->proto_version == V9FS_PROTO_2000L) {
|
1352 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dd", &fid, &mode);
|
1353 | 857bc158 | Aneesh Kumar K.V | } else {
|
1354 | 67d6fa53 | Benjamin Herrenschmidt | uint8_t modebyte; |
1355 | 67d6fa53 | Benjamin Herrenschmidt | err = pdu_unmarshal(pdu, offset, "db", &fid, &modebyte);
|
1356 | 67d6fa53 | Benjamin Herrenschmidt | mode = modebyte; |
1357 | ddca7f86 | M. Mohan Kumar | } |
1358 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1359 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
1360 | 857bc158 | Aneesh Kumar K.V | } |
1361 | c572f23a | Harsh Prateek Bora | trace_v9fs_open(pdu->tag, pdu->id, fid, mode); |
1362 | c572f23a | Harsh Prateek Bora | |
1363 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
1364 | 857bc158 | Aneesh Kumar K.V | if (fidp == NULL) { |
1365 | 857bc158 | Aneesh Kumar K.V | err = -ENOENT; |
1366 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1367 | a6568fe2 | Anthony Liguori | } |
1368 | 857bc158 | Aneesh Kumar K.V | BUG_ON(fidp->fid_type != P9_FID_NONE); |
1369 | a6568fe2 | Anthony Liguori | |
1370 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_lstat(pdu, &fidp->path, &stbuf); |
1371 | 857bc158 | Aneesh Kumar K.V | if (err < 0) { |
1372 | a6568fe2 | Anthony Liguori | goto out;
|
1373 | a6568fe2 | Anthony Liguori | } |
1374 | 857bc158 | Aneesh Kumar K.V | stat_to_qid(&stbuf, &qid); |
1375 | 857bc158 | Aneesh Kumar K.V | if (S_ISDIR(stbuf.st_mode)) {
|
1376 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_opendir(pdu, fidp); |
1377 | 857bc158 | Aneesh Kumar K.V | if (err < 0) { |
1378 | 857bc158 | Aneesh Kumar K.V | goto out;
|
1379 | 857bc158 | Aneesh Kumar K.V | } |
1380 | 857bc158 | Aneesh Kumar K.V | fidp->fid_type = P9_FID_DIR; |
1381 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "Qd", &qid, 0); |
1382 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1383 | ddca7f86 | M. Mohan Kumar | goto out;
|
1384 | ddca7f86 | M. Mohan Kumar | } |
1385 | ddca7f86 | M. Mohan Kumar | err += offset; |
1386 | a6568fe2 | Anthony Liguori | } else {
|
1387 | 771e9d4c | M. Mohan Kumar | if (s->proto_version == V9FS_PROTO_2000L) {
|
1388 | d3ab98e6 | Aneesh Kumar K.V | flags = get_dotl_openflags(s, mode); |
1389 | 771e9d4c | M. Mohan Kumar | } else {
|
1390 | 857bc158 | Aneesh Kumar K.V | flags = omode_to_uflags(mode); |
1391 | 771e9d4c | M. Mohan Kumar | } |
1392 | 2c74c2cb | M. Mohan Kumar | if (is_ro_export(&s->ctx)) {
|
1393 | 2c74c2cb | M. Mohan Kumar | if (mode & O_WRONLY || mode & O_RDWR ||
|
1394 | 2c74c2cb | M. Mohan Kumar | mode & O_APPEND || mode & O_TRUNC) { |
1395 | 2c74c2cb | M. Mohan Kumar | err = -EROFS; |
1396 | 2c74c2cb | M. Mohan Kumar | goto out;
|
1397 | 2c74c2cb | M. Mohan Kumar | } |
1398 | 2c74c2cb | M. Mohan Kumar | } |
1399 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_open(pdu, fidp, flags); |
1400 | 857bc158 | Aneesh Kumar K.V | if (err < 0) { |
1401 | 857bc158 | Aneesh Kumar K.V | goto out;
|
1402 | 857bc158 | Aneesh Kumar K.V | } |
1403 | 857bc158 | Aneesh Kumar K.V | fidp->fid_type = P9_FID_FILE; |
1404 | 7a462745 | Aneesh Kumar K.V | fidp->open_flags = flags; |
1405 | 7a462745 | Aneesh Kumar K.V | if (flags & O_EXCL) {
|
1406 | 7a462745 | Aneesh Kumar K.V | /*
|
1407 | 7a462745 | Aneesh Kumar K.V | * We let the host file system do O_EXCL check
|
1408 | 7a462745 | Aneesh Kumar K.V | * We should not reclaim such fd
|
1409 | 7a462745 | Aneesh Kumar K.V | */
|
1410 | 7a462745 | Aneesh Kumar K.V | fidp->flags |= FID_NON_RECLAIMABLE; |
1411 | 7a462745 | Aneesh Kumar K.V | } |
1412 | bccacf6c | Aneesh Kumar K.V | iounit = get_iounit(pdu, &fidp->path); |
1413 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "Qd", &qid, iounit);
|
1414 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1415 | ddca7f86 | M. Mohan Kumar | goto out;
|
1416 | ddca7f86 | M. Mohan Kumar | } |
1417 | ddca7f86 | M. Mohan Kumar | err += offset; |
1418 | a6568fe2 | Anthony Liguori | } |
1419 | 7999f7e1 | Aneesh Kumar K.V | trace_v9fs_open_return(pdu->tag, pdu->id, |
1420 | 7999f7e1 | Aneesh Kumar K.V | qid.type, qid.version, qid.path, iounit); |
1421 | a6568fe2 | Anthony Liguori | out:
|
1422 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
1423 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1424 | a6568fe2 | Anthony Liguori | complete_pdu(s, pdu, err); |
1425 | a6568fe2 | Anthony Liguori | } |
1426 | a6568fe2 | Anthony Liguori | |
1427 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_lcreate(void *opaque) |
1428 | c1568af5 | Venkateswararao Jujjuri (JV) | { |
1429 | c1568af5 | Venkateswararao Jujjuri (JV) | int32_t dfid, flags, mode; |
1430 | c1568af5 | Venkateswararao Jujjuri (JV) | gid_t gid; |
1431 | c1568af5 | Venkateswararao Jujjuri (JV) | ssize_t err = 0;
|
1432 | 36f8981f | Venkateswararao Jujjuri | ssize_t offset = 7;
|
1433 | 36f8981f | Venkateswararao Jujjuri | V9fsString name; |
1434 | 36f8981f | Venkateswararao Jujjuri | V9fsFidState *fidp; |
1435 | 36f8981f | Venkateswararao Jujjuri | struct stat stbuf;
|
1436 | 36f8981f | Venkateswararao Jujjuri | V9fsQID qid; |
1437 | 36f8981f | Venkateswararao Jujjuri | int32_t iounit; |
1438 | 36f8981f | Venkateswararao Jujjuri | V9fsPDU *pdu = opaque; |
1439 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1440 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&name); |
1441 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dsddd", &dfid,
|
1442 | ddca7f86 | M. Mohan Kumar | &name, &flags, &mode, &gid); |
1443 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1444 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
1445 | ddca7f86 | M. Mohan Kumar | } |
1446 | c572f23a | Harsh Prateek Bora | trace_v9fs_lcreate(pdu->tag, pdu->id, dfid, flags, mode, gid); |
1447 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1448 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, dfid); |
1449 | 36f8981f | Venkateswararao Jujjuri | if (fidp == NULL) { |
1450 | c1568af5 | Venkateswararao Jujjuri (JV) | err = -ENOENT; |
1451 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1452 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1453 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1454 | d3ab98e6 | Aneesh Kumar K.V | flags = get_dotl_openflags(pdu->s, flags); |
1455 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_open2(pdu, fidp, &name, gid, |
1456 | 02cb7f3a | Aneesh Kumar K.V | flags | O_CREAT, mode, &stbuf); |
1457 | 36f8981f | Venkateswararao Jujjuri | if (err < 0) { |
1458 | 36f8981f | Venkateswararao Jujjuri | goto out;
|
1459 | 36f8981f | Venkateswararao Jujjuri | } |
1460 | 36f8981f | Venkateswararao Jujjuri | fidp->fid_type = P9_FID_FILE; |
1461 | 7a462745 | Aneesh Kumar K.V | fidp->open_flags = flags; |
1462 | 7a462745 | Aneesh Kumar K.V | if (flags & O_EXCL) {
|
1463 | 7a462745 | Aneesh Kumar K.V | /*
|
1464 | 7a462745 | Aneesh Kumar K.V | * We let the host file system do O_EXCL check
|
1465 | 7a462745 | Aneesh Kumar K.V | * We should not reclaim such fd
|
1466 | 7a462745 | Aneesh Kumar K.V | */
|
1467 | 7a462745 | Aneesh Kumar K.V | fidp->flags |= FID_NON_RECLAIMABLE; |
1468 | 7a462745 | Aneesh Kumar K.V | } |
1469 | bccacf6c | Aneesh Kumar K.V | iounit = get_iounit(pdu, &fidp->path); |
1470 | 36f8981f | Venkateswararao Jujjuri | stat_to_qid(&stbuf, &qid); |
1471 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "Qd", &qid, iounit);
|
1472 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1473 | ddca7f86 | M. Mohan Kumar | goto out;
|
1474 | ddca7f86 | M. Mohan Kumar | } |
1475 | ddca7f86 | M. Mohan Kumar | err += offset; |
1476 | 7999f7e1 | Aneesh Kumar K.V | trace_v9fs_lcreate_return(pdu->tag, pdu->id, |
1477 | 7999f7e1 | Aneesh Kumar K.V | qid.type, qid.version, qid.path, iounit); |
1478 | c1568af5 | Venkateswararao Jujjuri (JV) | out:
|
1479 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
1480 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1481 | 36f8981f | Venkateswararao Jujjuri | complete_pdu(pdu->s, pdu, err); |
1482 | 36f8981f | Venkateswararao Jujjuri | v9fs_string_free(&name); |
1483 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1484 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1485 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_fsync(void *opaque) |
1486 | b41e95d3 | Venkateswararao Jujjuri (JV) | { |
1487 | 4e9ad444 | Aneesh Kumar K.V | int err;
|
1488 | b41e95d3 | Venkateswararao Jujjuri (JV) | int32_t fid; |
1489 | 4e9ad444 | Aneesh Kumar K.V | int datasync;
|
1490 | b41e95d3 | Venkateswararao Jujjuri (JV) | size_t offset = 7;
|
1491 | b41e95d3 | Venkateswararao Jujjuri (JV) | V9fsFidState *fidp; |
1492 | 4e9ad444 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
1493 | 4e9ad444 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1494 | b41e95d3 | Venkateswararao Jujjuri (JV) | |
1495 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dd", &fid, &datasync);
|
1496 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1497 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
1498 | ddca7f86 | M. Mohan Kumar | } |
1499 | c572f23a | Harsh Prateek Bora | trace_v9fs_fsync(pdu->tag, pdu->id, fid, datasync); |
1500 | c572f23a | Harsh Prateek Bora | |
1501 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
1502 | b41e95d3 | Venkateswararao Jujjuri (JV) | if (fidp == NULL) { |
1503 | b41e95d3 | Venkateswararao Jujjuri (JV) | err = -ENOENT; |
1504 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1505 | b41e95d3 | Venkateswararao Jujjuri (JV) | } |
1506 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_fsync(pdu, fidp, datasync); |
1507 | 4e9ad444 | Aneesh Kumar K.V | if (!err) {
|
1508 | 4e9ad444 | Aneesh Kumar K.V | err = offset; |
1509 | 4e9ad444 | Aneesh Kumar K.V | } |
1510 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
1511 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1512 | 4e9ad444 | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
1513 | b41e95d3 | Venkateswararao Jujjuri (JV) | } |
1514 | b41e95d3 | Venkateswararao Jujjuri (JV) | |
1515 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_clunk(void *opaque) |
1516 | a6568fe2 | Anthony Liguori | { |
1517 | c540ee51 | Aneesh Kumar K.V | int err;
|
1518 | bbd5697b | Anthony Liguori | int32_t fid; |
1519 | bbd5697b | Anthony Liguori | size_t offset = 7;
|
1520 | 84dfb926 | Aneesh Kumar K.V | V9fsFidState *fidp; |
1521 | c540ee51 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
1522 | c540ee51 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1523 | bbd5697b | Anthony Liguori | |
1524 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "d", &fid);
|
1525 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1526 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
1527 | ddca7f86 | M. Mohan Kumar | } |
1528 | c572f23a | Harsh Prateek Bora | trace_v9fs_clunk(pdu->tag, pdu->id, fid); |
1529 | 84dfb926 | Aneesh Kumar K.V | |
1530 | ce421a19 | Aneesh Kumar K.V | fidp = clunk_fid(s, fid); |
1531 | 84dfb926 | Aneesh Kumar K.V | if (fidp == NULL) { |
1532 | 84dfb926 | Aneesh Kumar K.V | err = -ENOENT; |
1533 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1534 | 84dfb926 | Aneesh Kumar K.V | } |
1535 | ce421a19 | Aneesh Kumar K.V | /*
|
1536 | ce421a19 | Aneesh Kumar K.V | * Bump the ref so that put_fid will
|
1537 | ce421a19 | Aneesh Kumar K.V | * free the fid.
|
1538 | ce421a19 | Aneesh Kumar K.V | */
|
1539 | ce421a19 | Aneesh Kumar K.V | fidp->ref++; |
1540 | a911a182 | Aneesh Kumar K.V | err = put_fid(pdu, fidp); |
1541 | a911a182 | Aneesh Kumar K.V | if (!err) {
|
1542 | a911a182 | Aneesh Kumar K.V | err = offset; |
1543 | a911a182 | Aneesh Kumar K.V | } |
1544 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1545 | bbd5697b | Anthony Liguori | complete_pdu(s, pdu, err); |
1546 | 9f107513 | Anthony Liguori | } |
1547 | 9f107513 | Anthony Liguori | |
1548 | 2f008a8c | Aneesh Kumar K.V | static int v9fs_xattr_read(V9fsState *s, V9fsPDU *pdu, V9fsFidState *fidp, |
1549 | 2f008a8c | Aneesh Kumar K.V | uint64_t off, uint32_t max_count) |
1550 | a9231555 | Anthony Liguori | { |
1551 | ddca7f86 | M. Mohan Kumar | ssize_t err; |
1552 | d208a0e0 | Aneesh Kumar K.V | size_t offset = 7;
|
1553 | d208a0e0 | Aneesh Kumar K.V | int read_count;
|
1554 | d208a0e0 | Aneesh Kumar K.V | int64_t xattr_len; |
1555 | a9231555 | Anthony Liguori | |
1556 | d208a0e0 | Aneesh Kumar K.V | xattr_len = fidp->fs.xattr.len; |
1557 | d208a0e0 | Aneesh Kumar K.V | read_count = xattr_len - off; |
1558 | d208a0e0 | Aneesh Kumar K.V | if (read_count > max_count) {
|
1559 | d208a0e0 | Aneesh Kumar K.V | read_count = max_count; |
1560 | d208a0e0 | Aneesh Kumar K.V | } else if (read_count < 0) { |
1561 | d208a0e0 | Aneesh Kumar K.V | /*
|
1562 | d208a0e0 | Aneesh Kumar K.V | * read beyond XATTR value
|
1563 | d208a0e0 | Aneesh Kumar K.V | */
|
1564 | d208a0e0 | Aneesh Kumar K.V | read_count = 0;
|
1565 | a9231555 | Anthony Liguori | } |
1566 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "d", read_count);
|
1567 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1568 | ddca7f86 | M. Mohan Kumar | return err;
|
1569 | ddca7f86 | M. Mohan Kumar | } |
1570 | ddca7f86 | M. Mohan Kumar | offset += err; |
1571 | ddca7f86 | M. Mohan Kumar | err = v9fs_pack(pdu->elem.in_sg, pdu->elem.in_num, offset, |
1572 | ddca7f86 | M. Mohan Kumar | ((char *)fidp->fs.xattr.value) + off,
|
1573 | ddca7f86 | M. Mohan Kumar | read_count); |
1574 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1575 | ddca7f86 | M. Mohan Kumar | return err;
|
1576 | ddca7f86 | M. Mohan Kumar | } |
1577 | ddca7f86 | M. Mohan Kumar | offset += err; |
1578 | d208a0e0 | Aneesh Kumar K.V | return offset;
|
1579 | a9231555 | Anthony Liguori | } |
1580 | a9231555 | Anthony Liguori | |
1581 | bccacf6c | Aneesh Kumar K.V | static int v9fs_do_readdir_with_stat(V9fsPDU *pdu, |
1582 | 2f008a8c | Aneesh Kumar K.V | V9fsFidState *fidp, uint32_t max_count) |
1583 | a9231555 | Anthony Liguori | { |
1584 | 2289be19 | Aneesh Kumar K.V | V9fsPath path; |
1585 | d208a0e0 | Aneesh Kumar K.V | V9fsStat v9stat; |
1586 | d208a0e0 | Aneesh Kumar K.V | int len, err = 0; |
1587 | d208a0e0 | Aneesh Kumar K.V | int32_t count = 0;
|
1588 | d208a0e0 | Aneesh Kumar K.V | struct stat stbuf;
|
1589 | d208a0e0 | Aneesh Kumar K.V | off_t saved_dir_pos; |
1590 | 5f524c1e | Harsh Prateek Bora | struct dirent *dent, *result;
|
1591 | a9231555 | Anthony Liguori | |
1592 | d208a0e0 | Aneesh Kumar K.V | /* save the directory position */
|
1593 | bccacf6c | Aneesh Kumar K.V | saved_dir_pos = v9fs_co_telldir(pdu, fidp); |
1594 | d208a0e0 | Aneesh Kumar K.V | if (saved_dir_pos < 0) { |
1595 | d208a0e0 | Aneesh Kumar K.V | return saved_dir_pos;
|
1596 | a9231555 | Anthony Liguori | } |
1597 | 5f524c1e | Harsh Prateek Bora | |
1598 | 5f524c1e | Harsh Prateek Bora | dent = g_malloc(sizeof(struct dirent)); |
1599 | 5f524c1e | Harsh Prateek Bora | |
1600 | d208a0e0 | Aneesh Kumar K.V | while (1) { |
1601 | 2289be19 | Aneesh Kumar K.V | v9fs_path_init(&path); |
1602 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_readdir_r(pdu, fidp, dent, &result); |
1603 | 5f524c1e | Harsh Prateek Bora | if (err || !result) {
|
1604 | d208a0e0 | Aneesh Kumar K.V | break;
|
1605 | d208a0e0 | Aneesh Kumar K.V | } |
1606 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_name_to_path(pdu, &fidp->path, dent->d_name, &path); |
1607 | d208a0e0 | Aneesh Kumar K.V | if (err < 0) { |
1608 | d208a0e0 | Aneesh Kumar K.V | goto out;
|
1609 | d208a0e0 | Aneesh Kumar K.V | } |
1610 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_lstat(pdu, &path, &stbuf); |
1611 | 2289be19 | Aneesh Kumar K.V | if (err < 0) { |
1612 | 2289be19 | Aneesh Kumar K.V | goto out;
|
1613 | 2289be19 | Aneesh Kumar K.V | } |
1614 | bccacf6c | Aneesh Kumar K.V | err = stat_to_v9stat(pdu, &path, &stbuf, &v9stat); |
1615 | d208a0e0 | Aneesh Kumar K.V | if (err < 0) { |
1616 | d208a0e0 | Aneesh Kumar K.V | goto out;
|
1617 | a9231555 | Anthony Liguori | } |
1618 | d208a0e0 | Aneesh Kumar K.V | /* 11 = 7 + 4 (7 = start offset, 4 = space for storing count) */
|
1619 | d208a0e0 | Aneesh Kumar K.V | len = pdu_marshal(pdu, 11 + count, "S", &v9stat); |
1620 | d208a0e0 | Aneesh Kumar K.V | if ((len != (v9stat.size + 2)) || ((count + len) > max_count)) { |
1621 | d208a0e0 | Aneesh Kumar K.V | /* Ran out of buffer. Set dir back to old position and return */
|
1622 | bccacf6c | Aneesh Kumar K.V | v9fs_co_seekdir(pdu, fidp, saved_dir_pos); |
1623 | d208a0e0 | Aneesh Kumar K.V | v9fs_stat_free(&v9stat); |
1624 | 2289be19 | Aneesh Kumar K.V | v9fs_path_free(&path); |
1625 | 5f524c1e | Harsh Prateek Bora | g_free(dent); |
1626 | d208a0e0 | Aneesh Kumar K.V | return count;
|
1627 | d208a0e0 | Aneesh Kumar K.V | } |
1628 | d208a0e0 | Aneesh Kumar K.V | count += len; |
1629 | d208a0e0 | Aneesh Kumar K.V | v9fs_stat_free(&v9stat); |
1630 | 2289be19 | Aneesh Kumar K.V | v9fs_path_free(&path); |
1631 | d208a0e0 | Aneesh Kumar K.V | saved_dir_pos = dent->d_off; |
1632 | a9231555 | Anthony Liguori | } |
1633 | a9231555 | Anthony Liguori | out:
|
1634 | 5f524c1e | Harsh Prateek Bora | g_free(dent); |
1635 | 2289be19 | Aneesh Kumar K.V | v9fs_path_free(&path); |
1636 | d208a0e0 | Aneesh Kumar K.V | if (err < 0) { |
1637 | d208a0e0 | Aneesh Kumar K.V | return err;
|
1638 | fa32ef88 | Aneesh Kumar K.V | } |
1639 | d208a0e0 | Aneesh Kumar K.V | return count;
|
1640 | fa32ef88 | Aneesh Kumar K.V | } |
1641 | fa32ef88 | Aneesh Kumar K.V | |
1642 | 302a0d3e | Stefan Hajnoczi | /*
|
1643 | 302a0d3e | Stefan Hajnoczi | * Create a QEMUIOVector for a sub-region of PDU iovecs
|
1644 | 302a0d3e | Stefan Hajnoczi | *
|
1645 | 302a0d3e | Stefan Hajnoczi | * @qiov: uninitialized QEMUIOVector
|
1646 | 302a0d3e | Stefan Hajnoczi | * @skip: number of bytes to skip from beginning of PDU
|
1647 | 302a0d3e | Stefan Hajnoczi | * @size: number of bytes to include
|
1648 | 302a0d3e | Stefan Hajnoczi | * @is_write: true - write, false - read
|
1649 | 302a0d3e | Stefan Hajnoczi | *
|
1650 | 302a0d3e | Stefan Hajnoczi | * The resulting QEMUIOVector has heap-allocated iovecs and must be cleaned up
|
1651 | 302a0d3e | Stefan Hajnoczi | * with qemu_iovec_destroy().
|
1652 | 302a0d3e | Stefan Hajnoczi | */
|
1653 | 302a0d3e | Stefan Hajnoczi | static void v9fs_init_qiov_from_pdu(QEMUIOVector *qiov, V9fsPDU *pdu, |
1654 | 1b093c48 | Michael Tokarev | size_t skip, size_t size, |
1655 | 302a0d3e | Stefan Hajnoczi | bool is_write)
|
1656 | 302a0d3e | Stefan Hajnoczi | { |
1657 | 302a0d3e | Stefan Hajnoczi | QEMUIOVector elem; |
1658 | 302a0d3e | Stefan Hajnoczi | struct iovec *iov;
|
1659 | 302a0d3e | Stefan Hajnoczi | unsigned int niov; |
1660 | 302a0d3e | Stefan Hajnoczi | |
1661 | 302a0d3e | Stefan Hajnoczi | if (is_write) {
|
1662 | 302a0d3e | Stefan Hajnoczi | iov = pdu->elem.out_sg; |
1663 | 302a0d3e | Stefan Hajnoczi | niov = pdu->elem.out_num; |
1664 | 302a0d3e | Stefan Hajnoczi | } else {
|
1665 | 302a0d3e | Stefan Hajnoczi | iov = pdu->elem.in_sg; |
1666 | 302a0d3e | Stefan Hajnoczi | niov = pdu->elem.in_num; |
1667 | 302a0d3e | Stefan Hajnoczi | } |
1668 | 302a0d3e | Stefan Hajnoczi | |
1669 | 302a0d3e | Stefan Hajnoczi | qemu_iovec_init_external(&elem, iov, niov); |
1670 | 302a0d3e | Stefan Hajnoczi | qemu_iovec_init(qiov, niov); |
1671 | 1b093c48 | Michael Tokarev | qemu_iovec_concat(qiov, &elem, skip, size); |
1672 | 302a0d3e | Stefan Hajnoczi | } |
1673 | 302a0d3e | Stefan Hajnoczi | |
1674 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_read(void *opaque) |
1675 | 9f107513 | Anthony Liguori | { |
1676 | a9231555 | Anthony Liguori | int32_t fid; |
1677 | 2f008a8c | Aneesh Kumar K.V | uint64_t off; |
1678 | a9231555 | Anthony Liguori | ssize_t err = 0;
|
1679 | d208a0e0 | Aneesh Kumar K.V | int32_t count = 0;
|
1680 | d208a0e0 | Aneesh Kumar K.V | size_t offset = 7;
|
1681 | 2f008a8c | Aneesh Kumar K.V | uint32_t max_count; |
1682 | d208a0e0 | Aneesh Kumar K.V | V9fsFidState *fidp; |
1683 | d208a0e0 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
1684 | d208a0e0 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1685 | a9231555 | Anthony Liguori | |
1686 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dqd", &fid, &off, &max_count);
|
1687 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1688 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
1689 | ddca7f86 | M. Mohan Kumar | } |
1690 | c572f23a | Harsh Prateek Bora | trace_v9fs_read(pdu->tag, pdu->id, fid, off, max_count); |
1691 | 84dfb926 | Aneesh Kumar K.V | |
1692 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
1693 | d208a0e0 | Aneesh Kumar K.V | if (fidp == NULL) { |
1694 | a9231555 | Anthony Liguori | err = -EINVAL; |
1695 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1696 | a9231555 | Anthony Liguori | } |
1697 | d208a0e0 | Aneesh Kumar K.V | if (fidp->fid_type == P9_FID_DIR) {
|
1698 | a9231555 | Anthony Liguori | |
1699 | d208a0e0 | Aneesh Kumar K.V | if (off == 0) { |
1700 | bccacf6c | Aneesh Kumar K.V | v9fs_co_rewinddir(pdu, fidp); |
1701 | a9231555 | Anthony Liguori | } |
1702 | bccacf6c | Aneesh Kumar K.V | count = v9fs_do_readdir_with_stat(pdu, fidp, max_count); |
1703 | d208a0e0 | Aneesh Kumar K.V | if (count < 0) { |
1704 | d208a0e0 | Aneesh Kumar K.V | err = count; |
1705 | d208a0e0 | Aneesh Kumar K.V | goto out;
|
1706 | 56d15a53 | Sanchit Garg | } |
1707 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "d", count);
|
1708 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1709 | ddca7f86 | M. Mohan Kumar | goto out;
|
1710 | ddca7f86 | M. Mohan Kumar | } |
1711 | ddca7f86 | M. Mohan Kumar | err += offset + count; |
1712 | d208a0e0 | Aneesh Kumar K.V | } else if (fidp->fid_type == P9_FID_FILE) { |
1713 | 302a0d3e | Stefan Hajnoczi | QEMUIOVector qiov_full; |
1714 | 302a0d3e | Stefan Hajnoczi | QEMUIOVector qiov; |
1715 | d208a0e0 | Aneesh Kumar K.V | int32_t len; |
1716 | d208a0e0 | Aneesh Kumar K.V | |
1717 | 302a0d3e | Stefan Hajnoczi | v9fs_init_qiov_from_pdu(&qiov_full, pdu, offset + 4, max_count, false); |
1718 | 302a0d3e | Stefan Hajnoczi | qemu_iovec_init(&qiov, qiov_full.niov); |
1719 | d208a0e0 | Aneesh Kumar K.V | do {
|
1720 | 302a0d3e | Stefan Hajnoczi | qemu_iovec_reset(&qiov); |
1721 | 1b093c48 | Michael Tokarev | qemu_iovec_concat(&qiov, &qiov_full, count, qiov_full.size - count); |
1722 | d208a0e0 | Aneesh Kumar K.V | if (0) { |
1723 | 302a0d3e | Stefan Hajnoczi | print_sg(qiov.iov, qiov.niov); |
1724 | d208a0e0 | Aneesh Kumar K.V | } |
1725 | d208a0e0 | Aneesh Kumar K.V | /* Loop in case of EINTR */
|
1726 | d208a0e0 | Aneesh Kumar K.V | do {
|
1727 | 302a0d3e | Stefan Hajnoczi | len = v9fs_co_preadv(pdu, fidp, qiov.iov, qiov.niov, off); |
1728 | d208a0e0 | Aneesh Kumar K.V | if (len >= 0) { |
1729 | d208a0e0 | Aneesh Kumar K.V | off += len; |
1730 | d208a0e0 | Aneesh Kumar K.V | count += len; |
1731 | d208a0e0 | Aneesh Kumar K.V | } |
1732 | bccacf6c | Aneesh Kumar K.V | } while (len == -EINTR && !pdu->cancelled);
|
1733 | d208a0e0 | Aneesh Kumar K.V | if (len < 0) { |
1734 | d208a0e0 | Aneesh Kumar K.V | /* IO error return the error */
|
1735 | d208a0e0 | Aneesh Kumar K.V | err = len; |
1736 | d208a0e0 | Aneesh Kumar K.V | goto out;
|
1737 | d208a0e0 | Aneesh Kumar K.V | } |
1738 | d208a0e0 | Aneesh Kumar K.V | } while (count < max_count && len > 0); |
1739 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "d", count);
|
1740 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1741 | ddca7f86 | M. Mohan Kumar | goto out;
|
1742 | ddca7f86 | M. Mohan Kumar | } |
1743 | ddca7f86 | M. Mohan Kumar | err += offset + count; |
1744 | 302a0d3e | Stefan Hajnoczi | qemu_iovec_destroy(&qiov); |
1745 | 302a0d3e | Stefan Hajnoczi | qemu_iovec_destroy(&qiov_full); |
1746 | d208a0e0 | Aneesh Kumar K.V | } else if (fidp->fid_type == P9_FID_XATTR) { |
1747 | d208a0e0 | Aneesh Kumar K.V | err = v9fs_xattr_read(s, pdu, fidp, off, max_count); |
1748 | a9231555 | Anthony Liguori | } else {
|
1749 | a9231555 | Anthony Liguori | err = -EINVAL; |
1750 | 9f107513 | Anthony Liguori | } |
1751 | 7999f7e1 | Aneesh Kumar K.V | trace_v9fs_read_return(pdu->tag, pdu->id, count, err); |
1752 | a9231555 | Anthony Liguori | out:
|
1753 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
1754 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1755 | a9231555 | Anthony Liguori | complete_pdu(s, pdu, err); |
1756 | 9f107513 | Anthony Liguori | } |
1757 | 9f107513 | Anthony Liguori | |
1758 | 5e4eaa79 | Aneesh Kumar K.V | static size_t v9fs_readdir_data_size(V9fsString *name)
|
1759 | c18e2f94 | Sripathi Kodi | { |
1760 | 5e4eaa79 | Aneesh Kumar K.V | /*
|
1761 | 5e4eaa79 | Aneesh Kumar K.V | * Size of each dirent on the wire: size of qid (13) + size of offset (8)
|
1762 | 5e4eaa79 | Aneesh Kumar K.V | * size of type (1) + size of name.size (2) + strlen(name.data)
|
1763 | 5e4eaa79 | Aneesh Kumar K.V | */
|
1764 | 5e4eaa79 | Aneesh Kumar K.V | return 24 + v9fs_string_size(name); |
1765 | c18e2f94 | Sripathi Kodi | } |
1766 | c18e2f94 | Sripathi Kodi | |
1767 | bccacf6c | Aneesh Kumar K.V | static int v9fs_do_readdir(V9fsPDU *pdu, |
1768 | 5e4eaa79 | Aneesh Kumar K.V | V9fsFidState *fidp, int32_t max_count) |
1769 | c18e2f94 | Sripathi Kodi | { |
1770 | c18e2f94 | Sripathi Kodi | size_t size; |
1771 | 5e4eaa79 | Aneesh Kumar K.V | V9fsQID qid; |
1772 | 5e4eaa79 | Aneesh Kumar K.V | V9fsString name; |
1773 | 5e4eaa79 | Aneesh Kumar K.V | int len, err = 0; |
1774 | 5e4eaa79 | Aneesh Kumar K.V | int32_t count = 0;
|
1775 | 5e4eaa79 | Aneesh Kumar K.V | off_t saved_dir_pos; |
1776 | 5f524c1e | Harsh Prateek Bora | struct dirent *dent, *result;
|
1777 | c18e2f94 | Sripathi Kodi | |
1778 | 5e4eaa79 | Aneesh Kumar K.V | /* save the directory position */
|
1779 | bccacf6c | Aneesh Kumar K.V | saved_dir_pos = v9fs_co_telldir(pdu, fidp); |
1780 | 5e4eaa79 | Aneesh Kumar K.V | if (saved_dir_pos < 0) { |
1781 | 5e4eaa79 | Aneesh Kumar K.V | return saved_dir_pos;
|
1782 | 5e4eaa79 | Aneesh Kumar K.V | } |
1783 | 5f524c1e | Harsh Prateek Bora | |
1784 | 5f524c1e | Harsh Prateek Bora | dent = g_malloc(sizeof(struct dirent)); |
1785 | 5f524c1e | Harsh Prateek Bora | |
1786 | 5e4eaa79 | Aneesh Kumar K.V | while (1) { |
1787 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_readdir_r(pdu, fidp, dent, &result); |
1788 | 5f524c1e | Harsh Prateek Bora | if (err || !result) {
|
1789 | 5e4eaa79 | Aneesh Kumar K.V | break;
|
1790 | 5e4eaa79 | Aneesh Kumar K.V | } |
1791 | 5e4eaa79 | Aneesh Kumar K.V | v9fs_string_init(&name); |
1792 | 5e4eaa79 | Aneesh Kumar K.V | v9fs_string_sprintf(&name, "%s", dent->d_name);
|
1793 | 5e4eaa79 | Aneesh Kumar K.V | if ((count + v9fs_readdir_data_size(&name)) > max_count) {
|
1794 | c18e2f94 | Sripathi Kodi | /* Ran out of buffer. Set dir back to old position and return */
|
1795 | bccacf6c | Aneesh Kumar K.V | v9fs_co_seekdir(pdu, fidp, saved_dir_pos); |
1796 | 5e4eaa79 | Aneesh Kumar K.V | v9fs_string_free(&name); |
1797 | 5f524c1e | Harsh Prateek Bora | g_free(dent); |
1798 | 5e4eaa79 | Aneesh Kumar K.V | return count;
|
1799 | c18e2f94 | Sripathi Kodi | } |
1800 | 5e4eaa79 | Aneesh Kumar K.V | /*
|
1801 | 5e4eaa79 | Aneesh Kumar K.V | * Fill up just the path field of qid because the client uses
|
1802 | c18e2f94 | Sripathi Kodi | * only that. To fill the entire qid structure we will have
|
1803 | c18e2f94 | Sripathi Kodi | * to stat each dirent found, which is expensive
|
1804 | c18e2f94 | Sripathi Kodi | */
|
1805 | 5e4eaa79 | Aneesh Kumar K.V | size = MIN(sizeof(dent->d_ino), sizeof(qid.path)); |
1806 | 5e4eaa79 | Aneesh Kumar K.V | memcpy(&qid.path, &dent->d_ino, size); |
1807 | c18e2f94 | Sripathi Kodi | /* Fill the other fields with dummy values */
|
1808 | 5e4eaa79 | Aneesh Kumar K.V | qid.type = 0;
|
1809 | 5e4eaa79 | Aneesh Kumar K.V | qid.version = 0;
|
1810 | c18e2f94 | Sripathi Kodi | |
1811 | 5e4eaa79 | Aneesh Kumar K.V | /* 11 = 7 + 4 (7 = start offset, 4 = space for storing count) */
|
1812 | 5e4eaa79 | Aneesh Kumar K.V | len = pdu_marshal(pdu, 11 + count, "Qqbs", |
1813 | 5e4eaa79 | Aneesh Kumar K.V | &qid, dent->d_off, |
1814 | 5e4eaa79 | Aneesh Kumar K.V | dent->d_type, &name); |
1815 | ddca7f86 | M. Mohan Kumar | if (len < 0) { |
1816 | ddca7f86 | M. Mohan Kumar | v9fs_co_seekdir(pdu, fidp, saved_dir_pos); |
1817 | ddca7f86 | M. Mohan Kumar | v9fs_string_free(&name); |
1818 | ddca7f86 | M. Mohan Kumar | g_free(dent); |
1819 | ddca7f86 | M. Mohan Kumar | return len;
|
1820 | ddca7f86 | M. Mohan Kumar | } |
1821 | 5e4eaa79 | Aneesh Kumar K.V | count += len; |
1822 | 5e4eaa79 | Aneesh Kumar K.V | v9fs_string_free(&name); |
1823 | 5e4eaa79 | Aneesh Kumar K.V | saved_dir_pos = dent->d_off; |
1824 | 5e4eaa79 | Aneesh Kumar K.V | } |
1825 | 5f524c1e | Harsh Prateek Bora | g_free(dent); |
1826 | 5e4eaa79 | Aneesh Kumar K.V | if (err < 0) { |
1827 | 5e4eaa79 | Aneesh Kumar K.V | return err;
|
1828 | 5e4eaa79 | Aneesh Kumar K.V | } |
1829 | 5e4eaa79 | Aneesh Kumar K.V | return count;
|
1830 | c18e2f94 | Sripathi Kodi | } |
1831 | c18e2f94 | Sripathi Kodi | |
1832 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_readdir(void *opaque) |
1833 | c18e2f94 | Sripathi Kodi | { |
1834 | c18e2f94 | Sripathi Kodi | int32_t fid; |
1835 | 5e4eaa79 | Aneesh Kumar K.V | V9fsFidState *fidp; |
1836 | 5e4eaa79 | Aneesh Kumar K.V | ssize_t retval = 0;
|
1837 | c18e2f94 | Sripathi Kodi | size_t offset = 7;
|
1838 | 2f008a8c | Aneesh Kumar K.V | uint64_t initial_offset; |
1839 | 2f008a8c | Aneesh Kumar K.V | int32_t count; |
1840 | 2f008a8c | Aneesh Kumar K.V | uint32_t max_count; |
1841 | 5e4eaa79 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
1842 | 5e4eaa79 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1843 | c18e2f94 | Sripathi Kodi | |
1844 | ddca7f86 | M. Mohan Kumar | retval = pdu_unmarshal(pdu, offset, "dqd", &fid,
|
1845 | ddca7f86 | M. Mohan Kumar | &initial_offset, &max_count); |
1846 | ddca7f86 | M. Mohan Kumar | if (retval < 0) { |
1847 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
1848 | ddca7f86 | M. Mohan Kumar | } |
1849 | c572f23a | Harsh Prateek Bora | trace_v9fs_readdir(pdu->tag, pdu->id, fid, initial_offset, max_count); |
1850 | c572f23a | Harsh Prateek Bora | |
1851 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
1852 | 84dfb926 | Aneesh Kumar K.V | if (fidp == NULL) { |
1853 | 84dfb926 | Aneesh Kumar K.V | retval = -EINVAL; |
1854 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1855 | 84dfb926 | Aneesh Kumar K.V | } |
1856 | 84dfb926 | Aneesh Kumar K.V | if (!fidp->fs.dir) {
|
1857 | 5e4eaa79 | Aneesh Kumar K.V | retval = -EINVAL; |
1858 | c18e2f94 | Sripathi Kodi | goto out;
|
1859 | c18e2f94 | Sripathi Kodi | } |
1860 | 5e4eaa79 | Aneesh Kumar K.V | if (initial_offset == 0) { |
1861 | bccacf6c | Aneesh Kumar K.V | v9fs_co_rewinddir(pdu, fidp); |
1862 | c18e2f94 | Sripathi Kodi | } else {
|
1863 | bccacf6c | Aneesh Kumar K.V | v9fs_co_seekdir(pdu, fidp, initial_offset); |
1864 | c18e2f94 | Sripathi Kodi | } |
1865 | bccacf6c | Aneesh Kumar K.V | count = v9fs_do_readdir(pdu, fidp, max_count); |
1866 | 5e4eaa79 | Aneesh Kumar K.V | if (count < 0) { |
1867 | 5e4eaa79 | Aneesh Kumar K.V | retval = count; |
1868 | 5e4eaa79 | Aneesh Kumar K.V | goto out;
|
1869 | 5e4eaa79 | Aneesh Kumar K.V | } |
1870 | ddca7f86 | M. Mohan Kumar | retval = pdu_marshal(pdu, offset, "d", count);
|
1871 | ddca7f86 | M. Mohan Kumar | if (retval < 0) { |
1872 | ddca7f86 | M. Mohan Kumar | goto out;
|
1873 | ddca7f86 | M. Mohan Kumar | } |
1874 | ddca7f86 | M. Mohan Kumar | retval += count + offset; |
1875 | 7999f7e1 | Aneesh Kumar K.V | trace_v9fs_readdir_return(pdu->tag, pdu->id, count, retval); |
1876 | c18e2f94 | Sripathi Kodi | out:
|
1877 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
1878 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1879 | 5e4eaa79 | Aneesh Kumar K.V | complete_pdu(s, pdu, retval); |
1880 | c18e2f94 | Sripathi Kodi | } |
1881 | c18e2f94 | Sripathi Kodi | |
1882 | d7a90491 | Aneesh Kumar K.V | static int v9fs_xattr_write(V9fsState *s, V9fsPDU *pdu, V9fsFidState *fidp, |
1883 | 2f008a8c | Aneesh Kumar K.V | uint64_t off, uint32_t count, |
1884 | d7a90491 | Aneesh Kumar K.V | struct iovec *sg, int cnt) |
1885 | 10b468bd | Aneesh Kumar K.V | { |
1886 | 10b468bd | Aneesh Kumar K.V | int i, to_copy;
|
1887 | 10b468bd | Aneesh Kumar K.V | ssize_t err = 0;
|
1888 | 10b468bd | Aneesh Kumar K.V | int write_count;
|
1889 | 10b468bd | Aneesh Kumar K.V | int64_t xattr_len; |
1890 | d7a90491 | Aneesh Kumar K.V | size_t offset = 7;
|
1891 | 10b468bd | Aneesh Kumar K.V | |
1892 | d7a90491 | Aneesh Kumar K.V | |
1893 | d7a90491 | Aneesh Kumar K.V | xattr_len = fidp->fs.xattr.len; |
1894 | d7a90491 | Aneesh Kumar K.V | write_count = xattr_len - off; |
1895 | d7a90491 | Aneesh Kumar K.V | if (write_count > count) {
|
1896 | d7a90491 | Aneesh Kumar K.V | write_count = count; |
1897 | 10b468bd | Aneesh Kumar K.V | } else if (write_count < 0) { |
1898 | 10b468bd | Aneesh Kumar K.V | /*
|
1899 | 10b468bd | Aneesh Kumar K.V | * write beyond XATTR value len specified in
|
1900 | 10b468bd | Aneesh Kumar K.V | * xattrcreate
|
1901 | 10b468bd | Aneesh Kumar K.V | */
|
1902 | 10b468bd | Aneesh Kumar K.V | err = -ENOSPC; |
1903 | 10b468bd | Aneesh Kumar K.V | goto out;
|
1904 | 10b468bd | Aneesh Kumar K.V | } |
1905 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "d", write_count);
|
1906 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1907 | ddca7f86 | M. Mohan Kumar | return err;
|
1908 | ddca7f86 | M. Mohan Kumar | } |
1909 | ddca7f86 | M. Mohan Kumar | err += offset; |
1910 | d7a90491 | Aneesh Kumar K.V | fidp->fs.xattr.copied_len += write_count; |
1911 | 10b468bd | Aneesh Kumar K.V | /*
|
1912 | 10b468bd | Aneesh Kumar K.V | * Now copy the content from sg list
|
1913 | 10b468bd | Aneesh Kumar K.V | */
|
1914 | d7a90491 | Aneesh Kumar K.V | for (i = 0; i < cnt; i++) { |
1915 | d7a90491 | Aneesh Kumar K.V | if (write_count > sg[i].iov_len) {
|
1916 | d7a90491 | Aneesh Kumar K.V | to_copy = sg[i].iov_len; |
1917 | 10b468bd | Aneesh Kumar K.V | } else {
|
1918 | 10b468bd | Aneesh Kumar K.V | to_copy = write_count; |
1919 | 10b468bd | Aneesh Kumar K.V | } |
1920 | d7a90491 | Aneesh Kumar K.V | memcpy((char *)fidp->fs.xattr.value + off, sg[i].iov_base, to_copy);
|
1921 | 10b468bd | Aneesh Kumar K.V | /* updating vs->off since we are not using below */
|
1922 | d7a90491 | Aneesh Kumar K.V | off += to_copy; |
1923 | 10b468bd | Aneesh Kumar K.V | write_count -= to_copy; |
1924 | 10b468bd | Aneesh Kumar K.V | } |
1925 | 10b468bd | Aneesh Kumar K.V | out:
|
1926 | d7a90491 | Aneesh Kumar K.V | return err;
|
1927 | 10b468bd | Aneesh Kumar K.V | } |
1928 | 10b468bd | Aneesh Kumar K.V | |
1929 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_write(void *opaque) |
1930 | 9f107513 | Anthony Liguori | { |
1931 | d7a90491 | Aneesh Kumar K.V | ssize_t err; |
1932 | d7a90491 | Aneesh Kumar K.V | int32_t fid; |
1933 | 2f008a8c | Aneesh Kumar K.V | uint64_t off; |
1934 | 2f008a8c | Aneesh Kumar K.V | uint32_t count; |
1935 | d7a90491 | Aneesh Kumar K.V | int32_t len = 0;
|
1936 | d7a90491 | Aneesh Kumar K.V | int32_t total = 0;
|
1937 | d7a90491 | Aneesh Kumar K.V | size_t offset = 7;
|
1938 | d7a90491 | Aneesh Kumar K.V | V9fsFidState *fidp; |
1939 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
1940 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
1941 | 302a0d3e | Stefan Hajnoczi | QEMUIOVector qiov_full; |
1942 | 302a0d3e | Stefan Hajnoczi | QEMUIOVector qiov; |
1943 | 8449360c | Anthony Liguori | |
1944 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dqd", &fid, &off, &count);
|
1945 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1946 | ddca7f86 | M. Mohan Kumar | return complete_pdu(s, pdu, err);
|
1947 | ddca7f86 | M. Mohan Kumar | } |
1948 | ddca7f86 | M. Mohan Kumar | offset += err; |
1949 | 302a0d3e | Stefan Hajnoczi | v9fs_init_qiov_from_pdu(&qiov_full, pdu, offset, count, true);
|
1950 | 302a0d3e | Stefan Hajnoczi | trace_v9fs_write(pdu->tag, pdu->id, fid, off, count, qiov_full.niov); |
1951 | 84dfb926 | Aneesh Kumar K.V | |
1952 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
1953 | d7a90491 | Aneesh Kumar K.V | if (fidp == NULL) { |
1954 | 8449360c | Anthony Liguori | err = -EINVAL; |
1955 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1956 | 9f107513 | Anthony Liguori | } |
1957 | d7a90491 | Aneesh Kumar K.V | if (fidp->fid_type == P9_FID_FILE) {
|
1958 | d7a90491 | Aneesh Kumar K.V | if (fidp->fs.fd == -1) { |
1959 | 10b468bd | Aneesh Kumar K.V | err = -EINVAL; |
1960 | 10b468bd | Aneesh Kumar K.V | goto out;
|
1961 | 10b468bd | Aneesh Kumar K.V | } |
1962 | d7a90491 | Aneesh Kumar K.V | } else if (fidp->fid_type == P9_FID_XATTR) { |
1963 | 10b468bd | Aneesh Kumar K.V | /*
|
1964 | 10b468bd | Aneesh Kumar K.V | * setxattr operation
|
1965 | 10b468bd | Aneesh Kumar K.V | */
|
1966 | 302a0d3e | Stefan Hajnoczi | err = v9fs_xattr_write(s, pdu, fidp, off, count, |
1967 | 302a0d3e | Stefan Hajnoczi | qiov_full.iov, qiov_full.niov); |
1968 | d7a90491 | Aneesh Kumar K.V | goto out;
|
1969 | 10b468bd | Aneesh Kumar K.V | } else {
|
1970 | 8449360c | Anthony Liguori | err = -EINVAL; |
1971 | 8449360c | Anthony Liguori | goto out;
|
1972 | 8449360c | Anthony Liguori | } |
1973 | 302a0d3e | Stefan Hajnoczi | qemu_iovec_init(&qiov, qiov_full.niov); |
1974 | d7a90491 | Aneesh Kumar K.V | do {
|
1975 | 302a0d3e | Stefan Hajnoczi | qemu_iovec_reset(&qiov); |
1976 | 1b093c48 | Michael Tokarev | qemu_iovec_concat(&qiov, &qiov_full, total, qiov_full.size - total); |
1977 | d7a90491 | Aneesh Kumar K.V | if (0) { |
1978 | 302a0d3e | Stefan Hajnoczi | print_sg(qiov.iov, qiov.niov); |
1979 | 56d15a53 | Sanchit Garg | } |
1980 | d7a90491 | Aneesh Kumar K.V | /* Loop in case of EINTR */
|
1981 | d7a90491 | Aneesh Kumar K.V | do {
|
1982 | 302a0d3e | Stefan Hajnoczi | len = v9fs_co_pwritev(pdu, fidp, qiov.iov, qiov.niov, off); |
1983 | d7a90491 | Aneesh Kumar K.V | if (len >= 0) { |
1984 | d7a90491 | Aneesh Kumar K.V | off += len; |
1985 | d7a90491 | Aneesh Kumar K.V | total += len; |
1986 | d7a90491 | Aneesh Kumar K.V | } |
1987 | bccacf6c | Aneesh Kumar K.V | } while (len == -EINTR && !pdu->cancelled);
|
1988 | d7a90491 | Aneesh Kumar K.V | if (len < 0) { |
1989 | d7a90491 | Aneesh Kumar K.V | /* IO error return the error */
|
1990 | d7a90491 | Aneesh Kumar K.V | err = len; |
1991 | 302a0d3e | Stefan Hajnoczi | goto out_qiov;
|
1992 | d7a90491 | Aneesh Kumar K.V | } |
1993 | d7a90491 | Aneesh Kumar K.V | } while (total < count && len > 0); |
1994 | 302a0d3e | Stefan Hajnoczi | |
1995 | 302a0d3e | Stefan Hajnoczi | offset = 7;
|
1996 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "d", total);
|
1997 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
1998 | ddca7f86 | M. Mohan Kumar | goto out;
|
1999 | ddca7f86 | M. Mohan Kumar | } |
2000 | ddca7f86 | M. Mohan Kumar | err += offset; |
2001 | 7999f7e1 | Aneesh Kumar K.V | trace_v9fs_write_return(pdu->tag, pdu->id, total, err); |
2002 | 302a0d3e | Stefan Hajnoczi | out_qiov:
|
2003 | 302a0d3e | Stefan Hajnoczi | qemu_iovec_destroy(&qiov); |
2004 | 8449360c | Anthony Liguori | out:
|
2005 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
2006 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2007 | 302a0d3e | Stefan Hajnoczi | qemu_iovec_destroy(&qiov_full); |
2008 | d7a90491 | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
2009 | 9f107513 | Anthony Liguori | } |
2010 | 9f107513 | Anthony Liguori | |
2011 | baaa86d9 | Venkateswararao Jujjuri | static void v9fs_create(void *opaque) |
2012 | 5e94c103 | M. Mohan Kumar | { |
2013 | baaa86d9 | Venkateswararao Jujjuri | int32_t fid; |
2014 | baaa86d9 | Venkateswararao Jujjuri | int err = 0; |
2015 | baaa86d9 | Venkateswararao Jujjuri | size_t offset = 7;
|
2016 | baaa86d9 | Venkateswararao Jujjuri | V9fsFidState *fidp; |
2017 | baaa86d9 | Venkateswararao Jujjuri | V9fsQID qid; |
2018 | baaa86d9 | Venkateswararao Jujjuri | int32_t perm; |
2019 | baaa86d9 | Venkateswararao Jujjuri | int8_t mode; |
2020 | 2289be19 | Aneesh Kumar K.V | V9fsPath path; |
2021 | baaa86d9 | Venkateswararao Jujjuri | struct stat stbuf;
|
2022 | baaa86d9 | Venkateswararao Jujjuri | V9fsString name; |
2023 | baaa86d9 | Venkateswararao Jujjuri | V9fsString extension; |
2024 | baaa86d9 | Venkateswararao Jujjuri | int iounit;
|
2025 | baaa86d9 | Venkateswararao Jujjuri | V9fsPDU *pdu = opaque; |
2026 | c494dd6f | Anthony Liguori | |
2027 | 2289be19 | Aneesh Kumar K.V | v9fs_path_init(&path); |
2028 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&name); |
2029 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&extension); |
2030 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dsdbs", &fid, &name,
|
2031 | ddca7f86 | M. Mohan Kumar | &perm, &mode, &extension); |
2032 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2033 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
2034 | ddca7f86 | M. Mohan Kumar | } |
2035 | c572f23a | Harsh Prateek Bora | trace_v9fs_create(pdu->tag, pdu->id, fid, name.data, perm, mode); |
2036 | c572f23a | Harsh Prateek Bora | |
2037 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
2038 | baaa86d9 | Venkateswararao Jujjuri | if (fidp == NULL) { |
2039 | baaa86d9 | Venkateswararao Jujjuri | err = -EINVAL; |
2040 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2041 | c494dd6f | Anthony Liguori | } |
2042 | baaa86d9 | Venkateswararao Jujjuri | if (perm & P9_STAT_MODE_DIR) {
|
2043 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_mkdir(pdu, fidp, &name, perm & 0777,
|
2044 | 02cb7f3a | Aneesh Kumar K.V | fidp->uid, -1, &stbuf);
|
2045 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2046 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2047 | baaa86d9 | Venkateswararao Jujjuri | } |
2048 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_name_to_path(pdu, &fidp->path, name.data, &path); |
2049 | 2289be19 | Aneesh Kumar K.V | if (err < 0) { |
2050 | 2289be19 | Aneesh Kumar K.V | goto out;
|
2051 | 2289be19 | Aneesh Kumar K.V | } |
2052 | 2289be19 | Aneesh Kumar K.V | v9fs_path_copy(&fidp->path, &path); |
2053 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_opendir(pdu, fidp); |
2054 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2055 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2056 | baaa86d9 | Venkateswararao Jujjuri | } |
2057 | baaa86d9 | Venkateswararao Jujjuri | fidp->fid_type = P9_FID_DIR; |
2058 | baaa86d9 | Venkateswararao Jujjuri | } else if (perm & P9_STAT_MODE_SYMLINK) { |
2059 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_symlink(pdu, fidp, &name, |
2060 | 02cb7f3a | Aneesh Kumar K.V | extension.data, -1 , &stbuf);
|
2061 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2062 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2063 | baaa86d9 | Venkateswararao Jujjuri | } |
2064 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_name_to_path(pdu, &fidp->path, name.data, &path); |
2065 | 2289be19 | Aneesh Kumar K.V | if (err < 0) { |
2066 | 2289be19 | Aneesh Kumar K.V | goto out;
|
2067 | 2289be19 | Aneesh Kumar K.V | } |
2068 | 2289be19 | Aneesh Kumar K.V | v9fs_path_copy(&fidp->path, &path); |
2069 | baaa86d9 | Venkateswararao Jujjuri | } else if (perm & P9_STAT_MODE_LINK) { |
2070 | 2289be19 | Aneesh Kumar K.V | int32_t ofid = atoi(extension.data); |
2071 | bccacf6c | Aneesh Kumar K.V | V9fsFidState *ofidp = get_fid(pdu, ofid); |
2072 | 2289be19 | Aneesh Kumar K.V | if (ofidp == NULL) { |
2073 | baaa86d9 | Venkateswararao Jujjuri | err = -EINVAL; |
2074 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2075 | baaa86d9 | Venkateswararao Jujjuri | } |
2076 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_link(pdu, ofidp, fidp, &name); |
2077 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, ofidp); |
2078 | 2289be19 | Aneesh Kumar K.V | if (err < 0) { |
2079 | 2289be19 | Aneesh Kumar K.V | goto out;
|
2080 | 2289be19 | Aneesh Kumar K.V | } |
2081 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_name_to_path(pdu, &fidp->path, name.data, &path); |
2082 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2083 | 2289be19 | Aneesh Kumar K.V | fidp->fid_type = P9_FID_NONE; |
2084 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2085 | c494dd6f | Anthony Liguori | } |
2086 | 2289be19 | Aneesh Kumar K.V | v9fs_path_copy(&fidp->path, &path); |
2087 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_lstat(pdu, &fidp->path, &stbuf); |
2088 | 02cb7f3a | Aneesh Kumar K.V | if (err < 0) { |
2089 | 02cb7f3a | Aneesh Kumar K.V | fidp->fid_type = P9_FID_NONE; |
2090 | 02cb7f3a | Aneesh Kumar K.V | goto out;
|
2091 | 02cb7f3a | Aneesh Kumar K.V | } |
2092 | baaa86d9 | Venkateswararao Jujjuri | } else if (perm & P9_STAT_MODE_DEVICE) { |
2093 | c494dd6f | Anthony Liguori | char ctype;
|
2094 | c494dd6f | Anthony Liguori | uint32_t major, minor; |
2095 | c494dd6f | Anthony Liguori | mode_t nmode = 0;
|
2096 | c494dd6f | Anthony Liguori | |
2097 | baaa86d9 | Venkateswararao Jujjuri | if (sscanf(extension.data, "%c %u %u", &ctype, &major, &minor) != 3) { |
2098 | c494dd6f | Anthony Liguori | err = -errno; |
2099 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2100 | c494dd6f | Anthony Liguori | } |
2101 | c494dd6f | Anthony Liguori | |
2102 | c494dd6f | Anthony Liguori | switch (ctype) {
|
2103 | c494dd6f | Anthony Liguori | case 'c': |
2104 | c494dd6f | Anthony Liguori | nmode = S_IFCHR; |
2105 | c494dd6f | Anthony Liguori | break;
|
2106 | c494dd6f | Anthony Liguori | case 'b': |
2107 | c494dd6f | Anthony Liguori | nmode = S_IFBLK; |
2108 | c494dd6f | Anthony Liguori | break;
|
2109 | c494dd6f | Anthony Liguori | default:
|
2110 | c494dd6f | Anthony Liguori | err = -EIO; |
2111 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2112 | baaa86d9 | Venkateswararao Jujjuri | } |
2113 | c1568af5 | Venkateswararao Jujjuri (JV) | |
2114 | baaa86d9 | Venkateswararao Jujjuri | nmode |= perm & 0777;
|
2115 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_mknod(pdu, fidp, &name, fidp->uid, -1,
|
2116 | 02cb7f3a | Aneesh Kumar K.V | makedev(major, minor), nmode, &stbuf); |
2117 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2118 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2119 | baaa86d9 | Venkateswararao Jujjuri | } |
2120 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_name_to_path(pdu, &fidp->path, name.data, &path); |
2121 | 2289be19 | Aneesh Kumar K.V | if (err < 0) { |
2122 | 2289be19 | Aneesh Kumar K.V | goto out;
|
2123 | 2289be19 | Aneesh Kumar K.V | } |
2124 | 2289be19 | Aneesh Kumar K.V | v9fs_path_copy(&fidp->path, &path); |
2125 | baaa86d9 | Venkateswararao Jujjuri | } else if (perm & P9_STAT_MODE_NAMED_PIPE) { |
2126 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_mknod(pdu, fidp, &name, fidp->uid, -1,
|
2127 | 02cb7f3a | Aneesh Kumar K.V | 0, S_IFIFO | (perm & 0777), &stbuf); |
2128 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2129 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2130 | baaa86d9 | Venkateswararao Jujjuri | } |
2131 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_name_to_path(pdu, &fidp->path, name.data, &path); |
2132 | 2289be19 | Aneesh Kumar K.V | if (err < 0) { |
2133 | 2289be19 | Aneesh Kumar K.V | goto out;
|
2134 | 2289be19 | Aneesh Kumar K.V | } |
2135 | 2289be19 | Aneesh Kumar K.V | v9fs_path_copy(&fidp->path, &path); |
2136 | baaa86d9 | Venkateswararao Jujjuri | } else if (perm & P9_STAT_MODE_SOCKET) { |
2137 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_mknod(pdu, fidp, &name, fidp->uid, -1,
|
2138 | 02cb7f3a | Aneesh Kumar K.V | 0, S_IFSOCK | (perm & 0777), &stbuf); |
2139 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2140 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2141 | baaa86d9 | Venkateswararao Jujjuri | } |
2142 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_name_to_path(pdu, &fidp->path, name.data, &path); |
2143 | 2289be19 | Aneesh Kumar K.V | if (err < 0) { |
2144 | 2289be19 | Aneesh Kumar K.V | goto out;
|
2145 | 2289be19 | Aneesh Kumar K.V | } |
2146 | 2289be19 | Aneesh Kumar K.V | v9fs_path_copy(&fidp->path, &path); |
2147 | baaa86d9 | Venkateswararao Jujjuri | } else {
|
2148 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_open2(pdu, fidp, &name, -1,
|
2149 | 02cb7f3a | Aneesh Kumar K.V | omode_to_uflags(mode)|O_CREAT, perm, &stbuf); |
2150 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2151 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2152 | baaa86d9 | Venkateswararao Jujjuri | } |
2153 | baaa86d9 | Venkateswararao Jujjuri | fidp->fid_type = P9_FID_FILE; |
2154 | 7a462745 | Aneesh Kumar K.V | fidp->open_flags = omode_to_uflags(mode); |
2155 | 7a462745 | Aneesh Kumar K.V | if (fidp->open_flags & O_EXCL) {
|
2156 | 7a462745 | Aneesh Kumar K.V | /*
|
2157 | 7a462745 | Aneesh Kumar K.V | * We let the host file system do O_EXCL check
|
2158 | 7a462745 | Aneesh Kumar K.V | * We should not reclaim such fd
|
2159 | 7a462745 | Aneesh Kumar K.V | */
|
2160 | 7a462745 | Aneesh Kumar K.V | fidp->flags |= FID_NON_RECLAIMABLE; |
2161 | 7a462745 | Aneesh Kumar K.V | } |
2162 | c494dd6f | Anthony Liguori | } |
2163 | bccacf6c | Aneesh Kumar K.V | iounit = get_iounit(pdu, &fidp->path); |
2164 | baaa86d9 | Venkateswararao Jujjuri | stat_to_qid(&stbuf, &qid); |
2165 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "Qd", &qid, iounit);
|
2166 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2167 | ddca7f86 | M. Mohan Kumar | goto out;
|
2168 | ddca7f86 | M. Mohan Kumar | } |
2169 | ddca7f86 | M. Mohan Kumar | err += offset; |
2170 | 7999f7e1 | Aneesh Kumar K.V | trace_v9fs_create_return(pdu->tag, pdu->id, |
2171 | 7999f7e1 | Aneesh Kumar K.V | qid.type, qid.version, qid.path, iounit); |
2172 | c494dd6f | Anthony Liguori | out:
|
2173 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
2174 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2175 | baaa86d9 | Venkateswararao Jujjuri | complete_pdu(pdu->s, pdu, err); |
2176 | baaa86d9 | Venkateswararao Jujjuri | v9fs_string_free(&name); |
2177 | baaa86d9 | Venkateswararao Jujjuri | v9fs_string_free(&extension); |
2178 | 2289be19 | Aneesh Kumar K.V | v9fs_path_free(&path); |
2179 | 9f107513 | Anthony Liguori | } |
2180 | 9f107513 | Anthony Liguori | |
2181 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_symlink(void *opaque) |
2182 | 08c60fc9 | Venkateswararao Jujjuri (JV) | { |
2183 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
2184 | 3fa2a8d1 | Venkateswararao Jujjuri | V9fsString name; |
2185 | 3fa2a8d1 | Venkateswararao Jujjuri | V9fsString symname; |
2186 | 3fa2a8d1 | Venkateswararao Jujjuri | V9fsFidState *dfidp; |
2187 | 3fa2a8d1 | Venkateswararao Jujjuri | V9fsQID qid; |
2188 | 3fa2a8d1 | Venkateswararao Jujjuri | struct stat stbuf;
|
2189 | 08c60fc9 | Venkateswararao Jujjuri (JV) | int32_t dfid; |
2190 | 08c60fc9 | Venkateswararao Jujjuri (JV) | int err = 0; |
2191 | 08c60fc9 | Venkateswararao Jujjuri (JV) | gid_t gid; |
2192 | 3fa2a8d1 | Venkateswararao Jujjuri | size_t offset = 7;
|
2193 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2194 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&name); |
2195 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&symname); |
2196 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dssd", &dfid, &name, &symname, &gid);
|
2197 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2198 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
2199 | ddca7f86 | M. Mohan Kumar | } |
2200 | c572f23a | Harsh Prateek Bora | trace_v9fs_symlink(pdu->tag, pdu->id, dfid, name.data, symname.data, gid); |
2201 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2202 | bccacf6c | Aneesh Kumar K.V | dfidp = get_fid(pdu, dfid); |
2203 | 3fa2a8d1 | Venkateswararao Jujjuri | if (dfidp == NULL) { |
2204 | 08c60fc9 | Venkateswararao Jujjuri (JV) | err = -EINVAL; |
2205 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2206 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } |
2207 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_symlink(pdu, dfidp, &name, symname.data, gid, &stbuf); |
2208 | 3fa2a8d1 | Venkateswararao Jujjuri | if (err < 0) { |
2209 | 3fa2a8d1 | Venkateswararao Jujjuri | goto out;
|
2210 | 3fa2a8d1 | Venkateswararao Jujjuri | } |
2211 | 3fa2a8d1 | Venkateswararao Jujjuri | stat_to_qid(&stbuf, &qid); |
2212 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "Q", &qid);
|
2213 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2214 | ddca7f86 | M. Mohan Kumar | goto out;
|
2215 | ddca7f86 | M. Mohan Kumar | } |
2216 | ddca7f86 | M. Mohan Kumar | err += offset; |
2217 | 7999f7e1 | Aneesh Kumar K.V | trace_v9fs_symlink_return(pdu->tag, pdu->id, |
2218 | 7999f7e1 | Aneesh Kumar K.V | qid.type, qid.version, qid.path); |
2219 | 08c60fc9 | Venkateswararao Jujjuri (JV) | out:
|
2220 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, dfidp); |
2221 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2222 | 3fa2a8d1 | Venkateswararao Jujjuri | complete_pdu(pdu->s, pdu, err); |
2223 | 3fa2a8d1 | Venkateswararao Jujjuri | v9fs_string_free(&name); |
2224 | 3fa2a8d1 | Venkateswararao Jujjuri | v9fs_string_free(&symname); |
2225 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } |
2226 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2227 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_flush(void *opaque) |
2228 | 9f107513 | Anthony Liguori | { |
2229 | ddca7f86 | M. Mohan Kumar | ssize_t err; |
2230 | bccacf6c | Aneesh Kumar K.V | int16_t tag; |
2231 | bccacf6c | Aneesh Kumar K.V | size_t offset = 7;
|
2232 | bccacf6c | Aneesh Kumar K.V | V9fsPDU *cancel_pdu; |
2233 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
2234 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
2235 | bccacf6c | Aneesh Kumar K.V | |
2236 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "w", &tag);
|
2237 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2238 | ddca7f86 | M. Mohan Kumar | complete_pdu(s, pdu, err); |
2239 | ddca7f86 | M. Mohan Kumar | return;
|
2240 | ddca7f86 | M. Mohan Kumar | } |
2241 | c572f23a | Harsh Prateek Bora | trace_v9fs_flush(pdu->tag, pdu->id, tag); |
2242 | bccacf6c | Aneesh Kumar K.V | |
2243 | bccacf6c | Aneesh Kumar K.V | QLIST_FOREACH(cancel_pdu, &s->active_list, next) { |
2244 | bccacf6c | Aneesh Kumar K.V | if (cancel_pdu->tag == tag) {
|
2245 | bccacf6c | Aneesh Kumar K.V | break;
|
2246 | bccacf6c | Aneesh Kumar K.V | } |
2247 | bccacf6c | Aneesh Kumar K.V | } |
2248 | bccacf6c | Aneesh Kumar K.V | if (cancel_pdu) {
|
2249 | bccacf6c | Aneesh Kumar K.V | cancel_pdu->cancelled = 1;
|
2250 | bccacf6c | Aneesh Kumar K.V | /*
|
2251 | bccacf6c | Aneesh Kumar K.V | * Wait for pdu to complete.
|
2252 | bccacf6c | Aneesh Kumar K.V | */
|
2253 | bccacf6c | Aneesh Kumar K.V | qemu_co_queue_wait(&cancel_pdu->complete); |
2254 | bccacf6c | Aneesh Kumar K.V | cancel_pdu->cancelled = 0;
|
2255 | bccacf6c | Aneesh Kumar K.V | free_pdu(pdu->s, cancel_pdu); |
2256 | bccacf6c | Aneesh Kumar K.V | } |
2257 | 9c5e9d89 | Anthony Liguori | complete_pdu(s, pdu, 7);
|
2258 | 9f107513 | Anthony Liguori | } |
2259 | 9f107513 | Anthony Liguori | |
2260 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_link(void *opaque) |
2261 | b2c224be | Venkateswararao Jujjuri (JV) | { |
2262 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
2263 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
2264 | b2c224be | Venkateswararao Jujjuri (JV) | int32_t dfid, oldfid; |
2265 | b2c224be | Venkateswararao Jujjuri (JV) | V9fsFidState *dfidp, *oldfidp; |
2266 | 3a93113a | Dong Xu Wang | V9fsString name; |
2267 | b2c224be | Venkateswararao Jujjuri (JV) | size_t offset = 7;
|
2268 | b2c224be | Venkateswararao Jujjuri (JV) | int err = 0; |
2269 | b2c224be | Venkateswararao Jujjuri (JV) | |
2270 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&name); |
2271 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dds", &dfid, &oldfid, &name);
|
2272 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2273 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
2274 | ddca7f86 | M. Mohan Kumar | } |
2275 | c572f23a | Harsh Prateek Bora | trace_v9fs_link(pdu->tag, pdu->id, dfid, oldfid, name.data); |
2276 | b2c224be | Venkateswararao Jujjuri (JV) | |
2277 | bccacf6c | Aneesh Kumar K.V | dfidp = get_fid(pdu, dfid); |
2278 | b2c224be | Venkateswararao Jujjuri (JV) | if (dfidp == NULL) { |
2279 | ffd66876 | Venkateswararao Jujjuri (JV) | err = -ENOENT; |
2280 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2281 | b2c224be | Venkateswararao Jujjuri (JV) | } |
2282 | b2c224be | Venkateswararao Jujjuri (JV) | |
2283 | bccacf6c | Aneesh Kumar K.V | oldfidp = get_fid(pdu, oldfid); |
2284 | b2c224be | Venkateswararao Jujjuri (JV) | if (oldfidp == NULL) { |
2285 | ffd66876 | Venkateswararao Jujjuri (JV) | err = -ENOENT; |
2286 | b2c224be | Venkateswararao Jujjuri (JV) | goto out;
|
2287 | b2c224be | Venkateswararao Jujjuri (JV) | } |
2288 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_link(pdu, oldfidp, dfidp, &name); |
2289 | ffd66876 | Venkateswararao Jujjuri (JV) | if (!err) {
|
2290 | ffd66876 | Venkateswararao Jujjuri (JV) | err = offset; |
2291 | b2c224be | Venkateswararao Jujjuri (JV) | } |
2292 | b2c224be | Venkateswararao Jujjuri (JV) | out:
|
2293 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, dfidp); |
2294 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2295 | b2c224be | Venkateswararao Jujjuri (JV) | v9fs_string_free(&name); |
2296 | b2c224be | Venkateswararao Jujjuri (JV) | complete_pdu(s, pdu, err); |
2297 | b2c224be | Venkateswararao Jujjuri (JV) | } |
2298 | b2c224be | Venkateswararao Jujjuri (JV) | |
2299 | 532decb7 | Aneesh Kumar K.V | /* Only works with path name based fid */
|
2300 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_remove(void *opaque) |
2301 | 9f107513 | Anthony Liguori | { |
2302 | 5bae1900 | Anthony Liguori | int32_t fid; |
2303 | 5bae1900 | Anthony Liguori | int err = 0; |
2304 | ae1ef571 | Venkateswararao Jujjuri | size_t offset = 7;
|
2305 | ae1ef571 | Venkateswararao Jujjuri | V9fsFidState *fidp; |
2306 | ae1ef571 | Venkateswararao Jujjuri | V9fsPDU *pdu = opaque; |
2307 | 5bae1900 | Anthony Liguori | |
2308 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "d", &fid);
|
2309 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2310 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
2311 | ddca7f86 | M. Mohan Kumar | } |
2312 | c572f23a | Harsh Prateek Bora | trace_v9fs_remove(pdu->tag, pdu->id, fid); |
2313 | 5bae1900 | Anthony Liguori | |
2314 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
2315 | ae1ef571 | Venkateswararao Jujjuri | if (fidp == NULL) { |
2316 | 5bae1900 | Anthony Liguori | err = -EINVAL; |
2317 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2318 | 9f107513 | Anthony Liguori | } |
2319 | 532decb7 | Aneesh Kumar K.V | /* if fs driver is not path based, return EOPNOTSUPP */
|
2320 | c98f1d4a | Aneesh Kumar K.V | if (!(pdu->s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT)) {
|
2321 | 532decb7 | Aneesh Kumar K.V | err = -EOPNOTSUPP; |
2322 | 532decb7 | Aneesh Kumar K.V | goto out_err;
|
2323 | 532decb7 | Aneesh Kumar K.V | } |
2324 | 7a462745 | Aneesh Kumar K.V | /*
|
2325 | 7a462745 | Aneesh Kumar K.V | * IF the file is unlinked, we cannot reopen
|
2326 | 7a462745 | Aneesh Kumar K.V | * the file later. So don't reclaim fd
|
2327 | 7a462745 | Aneesh Kumar K.V | */
|
2328 | bccacf6c | Aneesh Kumar K.V | err = v9fs_mark_fids_unreclaim(pdu, &fidp->path); |
2329 | 7a462745 | Aneesh Kumar K.V | if (err < 0) { |
2330 | 7a462745 | Aneesh Kumar K.V | goto out_err;
|
2331 | 7a462745 | Aneesh Kumar K.V | } |
2332 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_remove(pdu, &fidp->path); |
2333 | ae1ef571 | Venkateswararao Jujjuri | if (!err) {
|
2334 | ae1ef571 | Venkateswararao Jujjuri | err = offset; |
2335 | ae1ef571 | Venkateswararao Jujjuri | } |
2336 | 7a462745 | Aneesh Kumar K.V | out_err:
|
2337 | ae1ef571 | Venkateswararao Jujjuri | /* For TREMOVE we need to clunk the fid even on failed remove */
|
2338 | 84dfb926 | Aneesh Kumar K.V | clunk_fid(pdu->s, fidp->fid); |
2339 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
2340 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2341 | ae1ef571 | Venkateswararao Jujjuri | complete_pdu(pdu->s, pdu, err); |
2342 | 9f107513 | Anthony Liguori | } |
2343 | 9f107513 | Anthony Liguori | |
2344 | 7834cf77 | Aneesh Kumar K.V | static void v9fs_unlinkat(void *opaque) |
2345 | 7834cf77 | Aneesh Kumar K.V | { |
2346 | 7834cf77 | Aneesh Kumar K.V | int err = 0; |
2347 | 7834cf77 | Aneesh Kumar K.V | V9fsString name; |
2348 | 7834cf77 | Aneesh Kumar K.V | int32_t dfid, flags; |
2349 | 7834cf77 | Aneesh Kumar K.V | size_t offset = 7;
|
2350 | 2289be19 | Aneesh Kumar K.V | V9fsPath path; |
2351 | 7834cf77 | Aneesh Kumar K.V | V9fsFidState *dfidp; |
2352 | 7834cf77 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
2353 | 7834cf77 | Aneesh Kumar K.V | |
2354 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&name); |
2355 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dsd", &dfid, &name, &flags);
|
2356 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2357 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
2358 | ddca7f86 | M. Mohan Kumar | } |
2359 | bccacf6c | Aneesh Kumar K.V | dfidp = get_fid(pdu, dfid); |
2360 | 7834cf77 | Aneesh Kumar K.V | if (dfidp == NULL) { |
2361 | 7834cf77 | Aneesh Kumar K.V | err = -EINVAL; |
2362 | 7834cf77 | Aneesh Kumar K.V | goto out_nofid;
|
2363 | 7834cf77 | Aneesh Kumar K.V | } |
2364 | 7834cf77 | Aneesh Kumar K.V | /*
|
2365 | 7834cf77 | Aneesh Kumar K.V | * IF the file is unlinked, we cannot reopen
|
2366 | 7834cf77 | Aneesh Kumar K.V | * the file later. So don't reclaim fd
|
2367 | 7834cf77 | Aneesh Kumar K.V | */
|
2368 | 2289be19 | Aneesh Kumar K.V | v9fs_path_init(&path); |
2369 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_name_to_path(pdu, &dfidp->path, name.data, &path); |
2370 | 2289be19 | Aneesh Kumar K.V | if (err < 0) { |
2371 | 2289be19 | Aneesh Kumar K.V | goto out_err;
|
2372 | 2289be19 | Aneesh Kumar K.V | } |
2373 | bccacf6c | Aneesh Kumar K.V | err = v9fs_mark_fids_unreclaim(pdu, &path); |
2374 | 7834cf77 | Aneesh Kumar K.V | if (err < 0) { |
2375 | 7834cf77 | Aneesh Kumar K.V | goto out_err;
|
2376 | 7834cf77 | Aneesh Kumar K.V | } |
2377 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_unlinkat(pdu, &dfidp->path, &name, flags); |
2378 | 7834cf77 | Aneesh Kumar K.V | if (!err) {
|
2379 | 7834cf77 | Aneesh Kumar K.V | err = offset; |
2380 | 7834cf77 | Aneesh Kumar K.V | } |
2381 | 7834cf77 | Aneesh Kumar K.V | out_err:
|
2382 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, dfidp); |
2383 | 2289be19 | Aneesh Kumar K.V | v9fs_path_free(&path); |
2384 | 7834cf77 | Aneesh Kumar K.V | out_nofid:
|
2385 | 7834cf77 | Aneesh Kumar K.V | complete_pdu(pdu->s, pdu, err); |
2386 | 7834cf77 | Aneesh Kumar K.V | v9fs_string_free(&name); |
2387 | 7834cf77 | Aneesh Kumar K.V | } |
2388 | 7834cf77 | Aneesh Kumar K.V | |
2389 | 2289be19 | Aneesh Kumar K.V | |
2390 | 2289be19 | Aneesh Kumar K.V | /* Only works with path name based fid */
|
2391 | bccacf6c | Aneesh Kumar K.V | static int v9fs_complete_rename(V9fsPDU *pdu, V9fsFidState *fidp, |
2392 | 930b1e17 | Aneesh Kumar K.V | int32_t newdirfid, V9fsString *name) |
2393 | 8cf89e00 | Anthony Liguori | { |
2394 | 930b1e17 | Aneesh Kumar K.V | char *end;
|
2395 | c7b4b0b3 | M. Mohan Kumar | int err = 0; |
2396 | 2289be19 | Aneesh Kumar K.V | V9fsPath new_path; |
2397 | 2289be19 | Aneesh Kumar K.V | V9fsFidState *tfidp; |
2398 | bccacf6c | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
2399 | 84dfb926 | Aneesh Kumar K.V | V9fsFidState *dirfidp = NULL;
|
2400 | c7b4b0b3 | M. Mohan Kumar | char *old_name, *new_name;
|
2401 | 8cf89e00 | Anthony Liguori | |
2402 | 2289be19 | Aneesh Kumar K.V | v9fs_path_init(&new_path); |
2403 | 930b1e17 | Aneesh Kumar K.V | if (newdirfid != -1) { |
2404 | bccacf6c | Aneesh Kumar K.V | dirfidp = get_fid(pdu, newdirfid); |
2405 | c7b4b0b3 | M. Mohan Kumar | if (dirfidp == NULL) { |
2406 | c7b4b0b3 | M. Mohan Kumar | err = -ENOENT; |
2407 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2408 | c7b4b0b3 | M. Mohan Kumar | } |
2409 | d62dbb51 | Aneesh Kumar K.V | BUG_ON(dirfidp->fid_type != P9_FID_NONE); |
2410 | bccacf6c | Aneesh Kumar K.V | v9fs_co_name_to_path(pdu, &dirfidp->path, name->data, &new_path); |
2411 | c7b4b0b3 | M. Mohan Kumar | } else {
|
2412 | 930b1e17 | Aneesh Kumar K.V | old_name = fidp->path.data; |
2413 | 8cf89e00 | Anthony Liguori | end = strrchr(old_name, '/');
|
2414 | 8cf89e00 | Anthony Liguori | if (end) {
|
2415 | 8cf89e00 | Anthony Liguori | end++; |
2416 | 8cf89e00 | Anthony Liguori | } else {
|
2417 | 8cf89e00 | Anthony Liguori | end = old_name; |
2418 | 8cf89e00 | Anthony Liguori | } |
2419 | 7267c094 | Anthony Liguori | new_name = g_malloc0(end - old_name + name->size + 1);
|
2420 | c7b4b0b3 | M. Mohan Kumar | strncat(new_name, old_name, end - old_name); |
2421 | 930b1e17 | Aneesh Kumar K.V | strncat(new_name + (end - old_name), name->data, name->size); |
2422 | bccacf6c | Aneesh Kumar K.V | v9fs_co_name_to_path(pdu, NULL, new_name, &new_path);
|
2423 | 2289be19 | Aneesh Kumar K.V | g_free(new_name); |
2424 | c7b4b0b3 | M. Mohan Kumar | } |
2425 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_rename(pdu, &fidp->path, &new_path); |
2426 | 2289be19 | Aneesh Kumar K.V | if (err < 0) { |
2427 | 2289be19 | Aneesh Kumar K.V | goto out;
|
2428 | 2289be19 | Aneesh Kumar K.V | } |
2429 | 2289be19 | Aneesh Kumar K.V | /*
|
2430 | 2289be19 | Aneesh Kumar K.V | * Fixup fid's pointing to the old name to
|
2431 | 2289be19 | Aneesh Kumar K.V | * start pointing to the new name
|
2432 | 2289be19 | Aneesh Kumar K.V | */
|
2433 | 2289be19 | Aneesh Kumar K.V | for (tfidp = s->fid_list; tfidp; tfidp = tfidp->next) {
|
2434 | 2289be19 | Aneesh Kumar K.V | if (v9fs_path_is_ancestor(&fidp->path, &tfidp->path)) {
|
2435 | 2289be19 | Aneesh Kumar K.V | /* replace the name */
|
2436 | 2289be19 | Aneesh Kumar K.V | v9fs_fix_path(&tfidp->path, &new_path, strlen(fidp->path.data)); |
2437 | 8cf89e00 | Anthony Liguori | } |
2438 | 8cf89e00 | Anthony Liguori | } |
2439 | c7b4b0b3 | M. Mohan Kumar | out:
|
2440 | 84dfb926 | Aneesh Kumar K.V | if (dirfidp) {
|
2441 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, dirfidp); |
2442 | 84dfb926 | Aneesh Kumar K.V | } |
2443 | 2289be19 | Aneesh Kumar K.V | v9fs_path_free(&new_path); |
2444 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2445 | c7b4b0b3 | M. Mohan Kumar | return err;
|
2446 | c7b4b0b3 | M. Mohan Kumar | } |
2447 | c7b4b0b3 | M. Mohan Kumar | |
2448 | 532decb7 | Aneesh Kumar K.V | /* Only works with path name based fid */
|
2449 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_rename(void *opaque) |
2450 | c7b4b0b3 | M. Mohan Kumar | { |
2451 | c7b4b0b3 | M. Mohan Kumar | int32_t fid; |
2452 | c7b4b0b3 | M. Mohan Kumar | ssize_t err = 0;
|
2453 | 930b1e17 | Aneesh Kumar K.V | size_t offset = 7;
|
2454 | 930b1e17 | Aneesh Kumar K.V | V9fsString name; |
2455 | 930b1e17 | Aneesh Kumar K.V | int32_t newdirfid; |
2456 | 930b1e17 | Aneesh Kumar K.V | V9fsFidState *fidp; |
2457 | 930b1e17 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
2458 | 930b1e17 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
2459 | c7b4b0b3 | M. Mohan Kumar | |
2460 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&name); |
2461 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dds", &fid, &newdirfid, &name);
|
2462 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2463 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
2464 | ddca7f86 | M. Mohan Kumar | } |
2465 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
2466 | 930b1e17 | Aneesh Kumar K.V | if (fidp == NULL) { |
2467 | c7b4b0b3 | M. Mohan Kumar | err = -ENOENT; |
2468 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2469 | c7b4b0b3 | M. Mohan Kumar | } |
2470 | 930b1e17 | Aneesh Kumar K.V | BUG_ON(fidp->fid_type != P9_FID_NONE); |
2471 | 532decb7 | Aneesh Kumar K.V | /* if fs driver is not path based, return EOPNOTSUPP */
|
2472 | c98f1d4a | Aneesh Kumar K.V | if (!(pdu->s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT)) {
|
2473 | 532decb7 | Aneesh Kumar K.V | err = -EOPNOTSUPP; |
2474 | 532decb7 | Aneesh Kumar K.V | goto out;
|
2475 | 532decb7 | Aneesh Kumar K.V | } |
2476 | 532decb7 | Aneesh Kumar K.V | v9fs_path_write_lock(s); |
2477 | bccacf6c | Aneesh Kumar K.V | err = v9fs_complete_rename(pdu, fidp, newdirfid, &name); |
2478 | 532decb7 | Aneesh Kumar K.V | v9fs_path_unlock(s); |
2479 | 930b1e17 | Aneesh Kumar K.V | if (!err) {
|
2480 | 930b1e17 | Aneesh Kumar K.V | err = offset; |
2481 | 930b1e17 | Aneesh Kumar K.V | } |
2482 | 532decb7 | Aneesh Kumar K.V | out:
|
2483 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
2484 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2485 | 930b1e17 | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
2486 | 930b1e17 | Aneesh Kumar K.V | v9fs_string_free(&name); |
2487 | c7b4b0b3 | M. Mohan Kumar | } |
2488 | c7b4b0b3 | M. Mohan Kumar | |
2489 | bccacf6c | Aneesh Kumar K.V | static void v9fs_fix_fid_paths(V9fsPDU *pdu, V9fsPath *olddir, |
2490 | 2289be19 | Aneesh Kumar K.V | V9fsString *old_name, V9fsPath *newdir, |
2491 | 2289be19 | Aneesh Kumar K.V | V9fsString *new_name) |
2492 | 2289be19 | Aneesh Kumar K.V | { |
2493 | 2289be19 | Aneesh Kumar K.V | V9fsFidState *tfidp; |
2494 | 2289be19 | Aneesh Kumar K.V | V9fsPath oldpath, newpath; |
2495 | bccacf6c | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
2496 | 2289be19 | Aneesh Kumar K.V | |
2497 | 2289be19 | Aneesh Kumar K.V | |
2498 | 2289be19 | Aneesh Kumar K.V | v9fs_path_init(&oldpath); |
2499 | 2289be19 | Aneesh Kumar K.V | v9fs_path_init(&newpath); |
2500 | bccacf6c | Aneesh Kumar K.V | v9fs_co_name_to_path(pdu, olddir, old_name->data, &oldpath); |
2501 | bccacf6c | Aneesh Kumar K.V | v9fs_co_name_to_path(pdu, newdir, new_name->data, &newpath); |
2502 | 2289be19 | Aneesh Kumar K.V | |
2503 | 2289be19 | Aneesh Kumar K.V | /*
|
2504 | 2289be19 | Aneesh Kumar K.V | * Fixup fid's pointing to the old name to
|
2505 | 2289be19 | Aneesh Kumar K.V | * start pointing to the new name
|
2506 | 2289be19 | Aneesh Kumar K.V | */
|
2507 | 2289be19 | Aneesh Kumar K.V | for (tfidp = s->fid_list; tfidp; tfidp = tfidp->next) {
|
2508 | 2289be19 | Aneesh Kumar K.V | if (v9fs_path_is_ancestor(&oldpath, &tfidp->path)) {
|
2509 | 2289be19 | Aneesh Kumar K.V | /* replace the name */
|
2510 | 2289be19 | Aneesh Kumar K.V | v9fs_fix_path(&tfidp->path, &newpath, strlen(oldpath.data)); |
2511 | 2289be19 | Aneesh Kumar K.V | } |
2512 | 2289be19 | Aneesh Kumar K.V | } |
2513 | 2289be19 | Aneesh Kumar K.V | v9fs_path_free(&oldpath); |
2514 | 2289be19 | Aneesh Kumar K.V | v9fs_path_free(&newpath); |
2515 | 2289be19 | Aneesh Kumar K.V | } |
2516 | 2289be19 | Aneesh Kumar K.V | |
2517 | bccacf6c | Aneesh Kumar K.V | static int v9fs_complete_renameat(V9fsPDU *pdu, int32_t olddirfid, |
2518 | 89bf6593 | Aneesh Kumar K.V | V9fsString *old_name, int32_t newdirfid, |
2519 | 89bf6593 | Aneesh Kumar K.V | V9fsString *new_name) |
2520 | 89bf6593 | Aneesh Kumar K.V | { |
2521 | 89bf6593 | Aneesh Kumar K.V | int err = 0; |
2522 | bccacf6c | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
2523 | 89bf6593 | Aneesh Kumar K.V | V9fsFidState *newdirfidp = NULL, *olddirfidp = NULL; |
2524 | 89bf6593 | Aneesh Kumar K.V | |
2525 | bccacf6c | Aneesh Kumar K.V | olddirfidp = get_fid(pdu, olddirfid); |
2526 | 89bf6593 | Aneesh Kumar K.V | if (olddirfidp == NULL) { |
2527 | 89bf6593 | Aneesh Kumar K.V | err = -ENOENT; |
2528 | 89bf6593 | Aneesh Kumar K.V | goto out;
|
2529 | 89bf6593 | Aneesh Kumar K.V | } |
2530 | 89bf6593 | Aneesh Kumar K.V | if (newdirfid != -1) { |
2531 | bccacf6c | Aneesh Kumar K.V | newdirfidp = get_fid(pdu, newdirfid); |
2532 | 89bf6593 | Aneesh Kumar K.V | if (newdirfidp == NULL) { |
2533 | 89bf6593 | Aneesh Kumar K.V | err = -ENOENT; |
2534 | 89bf6593 | Aneesh Kumar K.V | goto out;
|
2535 | 89bf6593 | Aneesh Kumar K.V | } |
2536 | 89bf6593 | Aneesh Kumar K.V | } else {
|
2537 | bccacf6c | Aneesh Kumar K.V | newdirfidp = get_fid(pdu, olddirfid); |
2538 | 89bf6593 | Aneesh Kumar K.V | } |
2539 | 89bf6593 | Aneesh Kumar K.V | |
2540 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_renameat(pdu, &olddirfidp->path, old_name, |
2541 | 2289be19 | Aneesh Kumar K.V | &newdirfidp->path, new_name); |
2542 | 2289be19 | Aneesh Kumar K.V | if (err < 0) { |
2543 | 2289be19 | Aneesh Kumar K.V | goto out;
|
2544 | 89bf6593 | Aneesh Kumar K.V | } |
2545 | c98f1d4a | Aneesh Kumar K.V | if (s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT) {
|
2546 | 532decb7 | Aneesh Kumar K.V | /* Only for path based fid we need to do the below fixup */
|
2547 | bccacf6c | Aneesh Kumar K.V | v9fs_fix_fid_paths(pdu, &olddirfidp->path, old_name, |
2548 | 532decb7 | Aneesh Kumar K.V | &newdirfidp->path, new_name); |
2549 | 532decb7 | Aneesh Kumar K.V | } |
2550 | 89bf6593 | Aneesh Kumar K.V | out:
|
2551 | 89bf6593 | Aneesh Kumar K.V | if (olddirfidp) {
|
2552 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, olddirfidp); |
2553 | 89bf6593 | Aneesh Kumar K.V | } |
2554 | 89bf6593 | Aneesh Kumar K.V | if (newdirfidp) {
|
2555 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, newdirfidp); |
2556 | 89bf6593 | Aneesh Kumar K.V | } |
2557 | 89bf6593 | Aneesh Kumar K.V | return err;
|
2558 | 89bf6593 | Aneesh Kumar K.V | } |
2559 | 89bf6593 | Aneesh Kumar K.V | |
2560 | 89bf6593 | Aneesh Kumar K.V | static void v9fs_renameat(void *opaque) |
2561 | 89bf6593 | Aneesh Kumar K.V | { |
2562 | 89bf6593 | Aneesh Kumar K.V | ssize_t err = 0;
|
2563 | 89bf6593 | Aneesh Kumar K.V | size_t offset = 7;
|
2564 | 89bf6593 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
2565 | 89bf6593 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
2566 | 89bf6593 | Aneesh Kumar K.V | int32_t olddirfid, newdirfid; |
2567 | 89bf6593 | Aneesh Kumar K.V | V9fsString old_name, new_name; |
2568 | 89bf6593 | Aneesh Kumar K.V | |
2569 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&old_name); |
2570 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&new_name); |
2571 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dsds", &olddirfid,
|
2572 | ddca7f86 | M. Mohan Kumar | &old_name, &newdirfid, &new_name); |
2573 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2574 | ddca7f86 | M. Mohan Kumar | goto out_err;
|
2575 | ddca7f86 | M. Mohan Kumar | } |
2576 | 89bf6593 | Aneesh Kumar K.V | |
2577 | 532decb7 | Aneesh Kumar K.V | v9fs_path_write_lock(s); |
2578 | bccacf6c | Aneesh Kumar K.V | err = v9fs_complete_renameat(pdu, olddirfid, |
2579 | bccacf6c | Aneesh Kumar K.V | &old_name, newdirfid, &new_name); |
2580 | 532decb7 | Aneesh Kumar K.V | v9fs_path_unlock(s); |
2581 | 89bf6593 | Aneesh Kumar K.V | if (!err) {
|
2582 | 89bf6593 | Aneesh Kumar K.V | err = offset; |
2583 | 89bf6593 | Aneesh Kumar K.V | } |
2584 | ddca7f86 | M. Mohan Kumar | |
2585 | ddca7f86 | M. Mohan Kumar | out_err:
|
2586 | 89bf6593 | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
2587 | 89bf6593 | Aneesh Kumar K.V | v9fs_string_free(&old_name); |
2588 | 89bf6593 | Aneesh Kumar K.V | v9fs_string_free(&new_name); |
2589 | 89bf6593 | Aneesh Kumar K.V | } |
2590 | 89bf6593 | Aneesh Kumar K.V | |
2591 | b81d685e | Aneesh Kumar K.V | static void v9fs_wstat(void *opaque) |
2592 | 8cf89e00 | Anthony Liguori | { |
2593 | b81d685e | Aneesh Kumar K.V | int32_t fid; |
2594 | b81d685e | Aneesh Kumar K.V | int err = 0; |
2595 | b81d685e | Aneesh Kumar K.V | int16_t unused; |
2596 | b81d685e | Aneesh Kumar K.V | V9fsStat v9stat; |
2597 | b81d685e | Aneesh Kumar K.V | size_t offset = 7;
|
2598 | b81d685e | Aneesh Kumar K.V | struct stat stbuf;
|
2599 | b81d685e | Aneesh Kumar K.V | V9fsFidState *fidp; |
2600 | b81d685e | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
2601 | b81d685e | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
2602 | 8cf89e00 | Anthony Liguori | |
2603 | ddca7f86 | M. Mohan Kumar | v9fs_stat_init(&v9stat); |
2604 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dwS", &fid, &unused, &v9stat);
|
2605 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2606 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
2607 | ddca7f86 | M. Mohan Kumar | } |
2608 | c572f23a | Harsh Prateek Bora | trace_v9fs_wstat(pdu->tag, pdu->id, fid, |
2609 | c572f23a | Harsh Prateek Bora | v9stat.mode, v9stat.atime, v9stat.mtime); |
2610 | 84dfb926 | Aneesh Kumar K.V | |
2611 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
2612 | b81d685e | Aneesh Kumar K.V | if (fidp == NULL) { |
2613 | b81d685e | Aneesh Kumar K.V | err = -EINVAL; |
2614 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2615 | 8cf89e00 | Anthony Liguori | } |
2616 | b81d685e | Aneesh Kumar K.V | /* do we need to sync the file? */
|
2617 | b81d685e | Aneesh Kumar K.V | if (donttouch_stat(&v9stat)) {
|
2618 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_fsync(pdu, fidp, 0);
|
2619 | 8cf89e00 | Anthony Liguori | goto out;
|
2620 | 8cf89e00 | Anthony Liguori | } |
2621 | b81d685e | Aneesh Kumar K.V | if (v9stat.mode != -1) { |
2622 | b81d685e | Aneesh Kumar K.V | uint32_t v9_mode; |
2623 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_lstat(pdu, &fidp->path, &stbuf); |
2624 | b81d685e | Aneesh Kumar K.V | if (err < 0) { |
2625 | b81d685e | Aneesh Kumar K.V | goto out;
|
2626 | b81d685e | Aneesh Kumar K.V | } |
2627 | b81d685e | Aneesh Kumar K.V | v9_mode = stat_to_v9mode(&stbuf); |
2628 | b81d685e | Aneesh Kumar K.V | if ((v9stat.mode & P9_STAT_MODE_TYPE_BITS) !=
|
2629 | b81d685e | Aneesh Kumar K.V | (v9_mode & P9_STAT_MODE_TYPE_BITS)) { |
2630 | b81d685e | Aneesh Kumar K.V | /* Attempting to change the type */
|
2631 | b81d685e | Aneesh Kumar K.V | err = -EIO; |
2632 | b81d685e | Aneesh Kumar K.V | goto out;
|
2633 | b81d685e | Aneesh Kumar K.V | } |
2634 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_chmod(pdu, &fidp->path, |
2635 | b81d685e | Aneesh Kumar K.V | v9mode_to_mode(v9stat.mode, |
2636 | b81d685e | Aneesh Kumar K.V | &v9stat.extension)); |
2637 | b81d685e | Aneesh Kumar K.V | if (err < 0) { |
2638 | b81d685e | Aneesh Kumar K.V | goto out;
|
2639 | b81d685e | Aneesh Kumar K.V | } |
2640 | b81d685e | Aneesh Kumar K.V | } |
2641 | b81d685e | Aneesh Kumar K.V | if (v9stat.mtime != -1 || v9stat.atime != -1) { |
2642 | 8fc39ae4 | Sripathi Kodi | struct timespec times[2]; |
2643 | b81d685e | Aneesh Kumar K.V | if (v9stat.atime != -1) { |
2644 | b81d685e | Aneesh Kumar K.V | times[0].tv_sec = v9stat.atime;
|
2645 | 8fc39ae4 | Sripathi Kodi | times[0].tv_nsec = 0; |
2646 | 8fc39ae4 | Sripathi Kodi | } else {
|
2647 | 8fc39ae4 | Sripathi Kodi | times[0].tv_nsec = UTIME_OMIT;
|
2648 | 8fc39ae4 | Sripathi Kodi | } |
2649 | b81d685e | Aneesh Kumar K.V | if (v9stat.mtime != -1) { |
2650 | b81d685e | Aneesh Kumar K.V | times[1].tv_sec = v9stat.mtime;
|
2651 | 8fc39ae4 | Sripathi Kodi | times[1].tv_nsec = 0; |
2652 | 8fc39ae4 | Sripathi Kodi | } else {
|
2653 | 8fc39ae4 | Sripathi Kodi | times[1].tv_nsec = UTIME_OMIT;
|
2654 | 8fc39ae4 | Sripathi Kodi | } |
2655 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_utimensat(pdu, &fidp->path, times); |
2656 | b81d685e | Aneesh Kumar K.V | if (err < 0) { |
2657 | b81d685e | Aneesh Kumar K.V | goto out;
|
2658 | 8cf89e00 | Anthony Liguori | } |
2659 | 8cf89e00 | Anthony Liguori | } |
2660 | b81d685e | Aneesh Kumar K.V | if (v9stat.n_gid != -1 || v9stat.n_uid != -1) { |
2661 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_chown(pdu, &fidp->path, v9stat.n_uid, v9stat.n_gid); |
2662 | b81d685e | Aneesh Kumar K.V | if (err < 0) { |
2663 | 8cf89e00 | Anthony Liguori | goto out;
|
2664 | b81d685e | Aneesh Kumar K.V | } |
2665 | 8cf89e00 | Anthony Liguori | } |
2666 | b81d685e | Aneesh Kumar K.V | if (v9stat.name.size != 0) { |
2667 | bccacf6c | Aneesh Kumar K.V | err = v9fs_complete_rename(pdu, fidp, -1, &v9stat.name);
|
2668 | b81d685e | Aneesh Kumar K.V | if (err < 0) { |
2669 | b81d685e | Aneesh Kumar K.V | goto out;
|
2670 | b81d685e | Aneesh Kumar K.V | } |
2671 | 8cf89e00 | Anthony Liguori | } |
2672 | b81d685e | Aneesh Kumar K.V | if (v9stat.length != -1) { |
2673 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_truncate(pdu, &fidp->path, v9stat.length); |
2674 | b81d685e | Aneesh Kumar K.V | if (err < 0) { |
2675 | b81d685e | Aneesh Kumar K.V | goto out;
|
2676 | b81d685e | Aneesh Kumar K.V | } |
2677 | 8cf89e00 | Anthony Liguori | } |
2678 | b81d685e | Aneesh Kumar K.V | err = offset; |
2679 | 8cf89e00 | Anthony Liguori | out:
|
2680 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
2681 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2682 | b81d685e | Aneesh Kumar K.V | v9fs_stat_free(&v9stat); |
2683 | b81d685e | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
2684 | 9f107513 | Anthony Liguori | } |
2685 | 9f107513 | Anthony Liguori | |
2686 | 88a4763e | Aneesh Kumar K.V | static int v9fs_fill_statfs(V9fsState *s, V9fsPDU *pdu, struct statfs *stbuf) |
2687 | 88a4763e | Aneesh Kumar K.V | { |
2688 | 88a4763e | Aneesh Kumar K.V | uint32_t f_type; |
2689 | 88a4763e | Aneesh Kumar K.V | uint32_t f_bsize; |
2690 | 88a4763e | Aneesh Kumar K.V | uint64_t f_blocks; |
2691 | 88a4763e | Aneesh Kumar K.V | uint64_t f_bfree; |
2692 | 88a4763e | Aneesh Kumar K.V | uint64_t f_bavail; |
2693 | 88a4763e | Aneesh Kumar K.V | uint64_t f_files; |
2694 | 88a4763e | Aneesh Kumar K.V | uint64_t f_ffree; |
2695 | 88a4763e | Aneesh Kumar K.V | uint64_t fsid_val; |
2696 | 88a4763e | Aneesh Kumar K.V | uint32_t f_namelen; |
2697 | 88a4763e | Aneesh Kumar K.V | size_t offset = 7;
|
2698 | 5e94c103 | M. Mohan Kumar | int32_t bsize_factor; |
2699 | 5e94c103 | M. Mohan Kumar | |
2700 | 5e94c103 | M. Mohan Kumar | /*
|
2701 | 5e94c103 | M. Mohan Kumar | * compute bsize factor based on host file system block size
|
2702 | 5e94c103 | M. Mohan Kumar | * and client msize
|
2703 | 5e94c103 | M. Mohan Kumar | */
|
2704 | 88a4763e | Aneesh Kumar K.V | bsize_factor = (s->msize - P9_IOHDRSZ)/stbuf->f_bsize; |
2705 | 5e94c103 | M. Mohan Kumar | if (!bsize_factor) {
|
2706 | 5e94c103 | M. Mohan Kumar | bsize_factor = 1;
|
2707 | 5e94c103 | M. Mohan Kumar | } |
2708 | 88a4763e | Aneesh Kumar K.V | f_type = stbuf->f_type; |
2709 | 88a4763e | Aneesh Kumar K.V | f_bsize = stbuf->f_bsize; |
2710 | 88a4763e | Aneesh Kumar K.V | f_bsize *= bsize_factor; |
2711 | 5e94c103 | M. Mohan Kumar | /*
|
2712 | 5e94c103 | M. Mohan Kumar | * f_bsize is adjusted(multiplied) by bsize factor, so we need to
|
2713 | 5e94c103 | M. Mohan Kumar | * adjust(divide) the number of blocks, free blocks and available
|
2714 | 5e94c103 | M. Mohan Kumar | * blocks by bsize factor
|
2715 | 5e94c103 | M. Mohan Kumar | */
|
2716 | 88a4763e | Aneesh Kumar K.V | f_blocks = stbuf->f_blocks/bsize_factor; |
2717 | 88a4763e | Aneesh Kumar K.V | f_bfree = stbuf->f_bfree/bsize_factor; |
2718 | 88a4763e | Aneesh Kumar K.V | f_bavail = stbuf->f_bavail/bsize_factor; |
2719 | 88a4763e | Aneesh Kumar K.V | f_files = stbuf->f_files; |
2720 | 88a4763e | Aneesh Kumar K.V | f_ffree = stbuf->f_ffree; |
2721 | 88a4763e | Aneesh Kumar K.V | fsid_val = (unsigned int) stbuf->f_fsid.__val[0] | |
2722 | 88a4763e | Aneesh Kumar K.V | (unsigned long long)stbuf->f_fsid.__val[1] << 32; |
2723 | 88a4763e | Aneesh Kumar K.V | f_namelen = stbuf->f_namelen; |
2724 | be940c87 | M. Mohan Kumar | |
2725 | 88a4763e | Aneesh Kumar K.V | return pdu_marshal(pdu, offset, "ddqqqqqqd", |
2726 | 88a4763e | Aneesh Kumar K.V | f_type, f_bsize, f_blocks, f_bfree, |
2727 | 88a4763e | Aneesh Kumar K.V | f_bavail, f_files, f_ffree, |
2728 | 88a4763e | Aneesh Kumar K.V | fsid_val, f_namelen); |
2729 | be940c87 | M. Mohan Kumar | } |
2730 | be940c87 | M. Mohan Kumar | |
2731 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_statfs(void *opaque) |
2732 | be940c87 | M. Mohan Kumar | { |
2733 | 88a4763e | Aneesh Kumar K.V | int32_t fid; |
2734 | 88a4763e | Aneesh Kumar K.V | ssize_t retval = 0;
|
2735 | 88a4763e | Aneesh Kumar K.V | size_t offset = 7;
|
2736 | 88a4763e | Aneesh Kumar K.V | V9fsFidState *fidp; |
2737 | 88a4763e | Aneesh Kumar K.V | struct statfs stbuf;
|
2738 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
2739 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
2740 | be940c87 | M. Mohan Kumar | |
2741 | ddca7f86 | M. Mohan Kumar | retval = pdu_unmarshal(pdu, offset, "d", &fid);
|
2742 | ddca7f86 | M. Mohan Kumar | if (retval < 0) { |
2743 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
2744 | ddca7f86 | M. Mohan Kumar | } |
2745 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
2746 | 88a4763e | Aneesh Kumar K.V | if (fidp == NULL) { |
2747 | 88a4763e | Aneesh Kumar K.V | retval = -ENOENT; |
2748 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2749 | be940c87 | M. Mohan Kumar | } |
2750 | bccacf6c | Aneesh Kumar K.V | retval = v9fs_co_statfs(pdu, &fidp->path, &stbuf); |
2751 | 88a4763e | Aneesh Kumar K.V | if (retval < 0) { |
2752 | 88a4763e | Aneesh Kumar K.V | goto out;
|
2753 | 88a4763e | Aneesh Kumar K.V | } |
2754 | ddca7f86 | M. Mohan Kumar | retval = v9fs_fill_statfs(s, pdu, &stbuf); |
2755 | ddca7f86 | M. Mohan Kumar | if (retval < 0) { |
2756 | ddca7f86 | M. Mohan Kumar | goto out;
|
2757 | ddca7f86 | M. Mohan Kumar | } |
2758 | ddca7f86 | M. Mohan Kumar | retval += offset; |
2759 | be940c87 | M. Mohan Kumar | out:
|
2760 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
2761 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2762 | 88a4763e | Aneesh Kumar K.V | complete_pdu(s, pdu, retval); |
2763 | be940c87 | M. Mohan Kumar | } |
2764 | be940c87 | M. Mohan Kumar | |
2765 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_mknod(void *opaque) |
2766 | 5268cecc | M. Mohan Kumar | { |
2767 | 1b733fed | Aneesh Kumar K.V | |
2768 | 1b733fed | Aneesh Kumar K.V | int mode;
|
2769 | 1b733fed | Aneesh Kumar K.V | gid_t gid; |
2770 | 5268cecc | M. Mohan Kumar | int32_t fid; |
2771 | 1b733fed | Aneesh Kumar K.V | V9fsQID qid; |
2772 | 5268cecc | M. Mohan Kumar | int err = 0; |
2773 | 5268cecc | M. Mohan Kumar | int major, minor;
|
2774 | 1b733fed | Aneesh Kumar K.V | size_t offset = 7;
|
2775 | 1b733fed | Aneesh Kumar K.V | V9fsString name; |
2776 | 1b733fed | Aneesh Kumar K.V | struct stat stbuf;
|
2777 | 1b733fed | Aneesh Kumar K.V | V9fsFidState *fidp; |
2778 | 1b733fed | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
2779 | 1b733fed | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
2780 | 5268cecc | M. Mohan Kumar | |
2781 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&name); |
2782 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dsdddd", &fid, &name, &mode,
|
2783 | ddca7f86 | M. Mohan Kumar | &major, &minor, &gid); |
2784 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2785 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
2786 | ddca7f86 | M. Mohan Kumar | } |
2787 | c572f23a | Harsh Prateek Bora | trace_v9fs_mknod(pdu->tag, pdu->id, fid, mode, major, minor); |
2788 | 5268cecc | M. Mohan Kumar | |
2789 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
2790 | 5268cecc | M. Mohan Kumar | if (fidp == NULL) { |
2791 | 5268cecc | M. Mohan Kumar | err = -ENOENT; |
2792 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2793 | 5268cecc | M. Mohan Kumar | } |
2794 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_mknod(pdu, fidp, &name, fidp->uid, gid, |
2795 | 02cb7f3a | Aneesh Kumar K.V | makedev(major, minor), mode, &stbuf); |
2796 | 1b733fed | Aneesh Kumar K.V | if (err < 0) { |
2797 | 1b733fed | Aneesh Kumar K.V | goto out;
|
2798 | 1b733fed | Aneesh Kumar K.V | } |
2799 | 1b733fed | Aneesh Kumar K.V | stat_to_qid(&stbuf, &qid); |
2800 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "Q", &qid);
|
2801 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2802 | ddca7f86 | M. Mohan Kumar | goto out;
|
2803 | ddca7f86 | M. Mohan Kumar | } |
2804 | ddca7f86 | M. Mohan Kumar | err += offset; |
2805 | 7999f7e1 | Aneesh Kumar K.V | trace_v9fs_mknod_return(pdu->tag, pdu->id, |
2806 | 7999f7e1 | Aneesh Kumar K.V | qid.type, qid.version, qid.path); |
2807 | 5268cecc | M. Mohan Kumar | out:
|
2808 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
2809 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2810 | 1b733fed | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
2811 | 1b733fed | Aneesh Kumar K.V | v9fs_string_free(&name); |
2812 | 5268cecc | M. Mohan Kumar | } |
2813 | 5268cecc | M. Mohan Kumar | |
2814 | 82cc3ee8 | M. Mohan Kumar | /*
|
2815 | 82cc3ee8 | M. Mohan Kumar | * Implement posix byte range locking code
|
2816 | 82cc3ee8 | M. Mohan Kumar | * Server side handling of locking code is very simple, because 9p server in
|
2817 | 82cc3ee8 | M. Mohan Kumar | * QEMU can handle only one client. And most of the lock handling
|
2818 | 82cc3ee8 | M. Mohan Kumar | * (like conflict, merging) etc is done by the VFS layer itself, so no need to
|
2819 | 82cc3ee8 | M. Mohan Kumar | * do any thing in * qemu 9p server side lock code path.
|
2820 | 82cc3ee8 | M. Mohan Kumar | * So when a TLOCK request comes, always return success
|
2821 | 82cc3ee8 | M. Mohan Kumar | */
|
2822 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_lock(void *opaque) |
2823 | 82cc3ee8 | M. Mohan Kumar | { |
2824 | 0c27bf2a | Aneesh Kumar K.V | int8_t status; |
2825 | ddca7f86 | M. Mohan Kumar | V9fsFlock flock; |
2826 | 0c27bf2a | Aneesh Kumar K.V | size_t offset = 7;
|
2827 | 0c27bf2a | Aneesh Kumar K.V | struct stat stbuf;
|
2828 | 0c27bf2a | Aneesh Kumar K.V | V9fsFidState *fidp; |
2829 | 0c27bf2a | Aneesh Kumar K.V | int32_t fid, err = 0;
|
2830 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
2831 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
2832 | 82cc3ee8 | M. Mohan Kumar | |
2833 | ddca7f86 | M. Mohan Kumar | status = P9_LOCK_ERROR; |
2834 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&flock.client_id); |
2835 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dbdqqds", &fid, &flock.type,
|
2836 | ddca7f86 | M. Mohan Kumar | &flock.flags, &flock.start, &flock.length, |
2837 | ddca7f86 | M. Mohan Kumar | &flock.proc_id, &flock.client_id); |
2838 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2839 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
2840 | ddca7f86 | M. Mohan Kumar | } |
2841 | c572f23a | Harsh Prateek Bora | trace_v9fs_lock(pdu->tag, pdu->id, fid, |
2842 | ddca7f86 | M. Mohan Kumar | flock.type, flock.start, flock.length); |
2843 | c572f23a | Harsh Prateek Bora | |
2844 | 82cc3ee8 | M. Mohan Kumar | |
2845 | 82cc3ee8 | M. Mohan Kumar | /* We support only block flag now (that too ignored currently) */
|
2846 | ddca7f86 | M. Mohan Kumar | if (flock.flags & ~P9_LOCK_FLAGS_BLOCK) {
|
2847 | 82cc3ee8 | M. Mohan Kumar | err = -EINVAL; |
2848 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2849 | 82cc3ee8 | M. Mohan Kumar | } |
2850 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
2851 | 0c27bf2a | Aneesh Kumar K.V | if (fidp == NULL) { |
2852 | 82cc3ee8 | M. Mohan Kumar | err = -ENOENT; |
2853 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2854 | 82cc3ee8 | M. Mohan Kumar | } |
2855 | cc720ddb | Aneesh Kumar K.V | err = v9fs_co_fstat(pdu, fidp, &stbuf); |
2856 | 82cc3ee8 | M. Mohan Kumar | if (err < 0) { |
2857 | 82cc3ee8 | M. Mohan Kumar | goto out;
|
2858 | 82cc3ee8 | M. Mohan Kumar | } |
2859 | 0c27bf2a | Aneesh Kumar K.V | status = P9_LOCK_SUCCESS; |
2860 | 82cc3ee8 | M. Mohan Kumar | out:
|
2861 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
2862 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2863 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "b", status);
|
2864 | ddca7f86 | M. Mohan Kumar | if (err > 0) { |
2865 | ddca7f86 | M. Mohan Kumar | err += offset; |
2866 | ddca7f86 | M. Mohan Kumar | } |
2867 | c572f23a | Harsh Prateek Bora | trace_v9fs_lock_return(pdu->tag, pdu->id, status); |
2868 | 0c27bf2a | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
2869 | ddca7f86 | M. Mohan Kumar | v9fs_string_free(&flock.client_id); |
2870 | 82cc3ee8 | M. Mohan Kumar | } |
2871 | 82cc3ee8 | M. Mohan Kumar | |
2872 | 8f354003 | M. Mohan Kumar | /*
|
2873 | 8f354003 | M. Mohan Kumar | * When a TGETLOCK request comes, always return success because all lock
|
2874 | 8f354003 | M. Mohan Kumar | * handling is done by client's VFS layer.
|
2875 | 8f354003 | M. Mohan Kumar | */
|
2876 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_getlock(void *opaque) |
2877 | 8f354003 | M. Mohan Kumar | { |
2878 | e4e414a4 | Aneesh Kumar K.V | size_t offset = 7;
|
2879 | e4e414a4 | Aneesh Kumar K.V | struct stat stbuf;
|
2880 | e4e414a4 | Aneesh Kumar K.V | V9fsFidState *fidp; |
2881 | ddca7f86 | M. Mohan Kumar | V9fsGetlock glock; |
2882 | e4e414a4 | Aneesh Kumar K.V | int32_t fid, err = 0;
|
2883 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
2884 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
2885 | 8f354003 | M. Mohan Kumar | |
2886 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&glock.client_id); |
2887 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dbqqds", &fid, &glock.type,
|
2888 | ddca7f86 | M. Mohan Kumar | &glock.start, &glock.length, &glock.proc_id, |
2889 | ddca7f86 | M. Mohan Kumar | &glock.client_id); |
2890 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2891 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
2892 | ddca7f86 | M. Mohan Kumar | } |
2893 | c572f23a | Harsh Prateek Bora | trace_v9fs_getlock(pdu->tag, pdu->id, fid, |
2894 | ddca7f86 | M. Mohan Kumar | glock.type, glock.start, glock.length); |
2895 | c572f23a | Harsh Prateek Bora | |
2896 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
2897 | e4e414a4 | Aneesh Kumar K.V | if (fidp == NULL) { |
2898 | 8f354003 | M. Mohan Kumar | err = -ENOENT; |
2899 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2900 | 8f354003 | M. Mohan Kumar | } |
2901 | cc720ddb | Aneesh Kumar K.V | err = v9fs_co_fstat(pdu, fidp, &stbuf); |
2902 | 8f354003 | M. Mohan Kumar | if (err < 0) { |
2903 | 8f354003 | M. Mohan Kumar | goto out;
|
2904 | 8f354003 | M. Mohan Kumar | } |
2905 | ddca7f86 | M. Mohan Kumar | glock.type = P9_LOCK_TYPE_UNLCK; |
2906 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "bqqds", glock.type,
|
2907 | ddca7f86 | M. Mohan Kumar | glock.start, glock.length, glock.proc_id, |
2908 | ddca7f86 | M. Mohan Kumar | &glock.client_id); |
2909 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2910 | ddca7f86 | M. Mohan Kumar | goto out;
|
2911 | ddca7f86 | M. Mohan Kumar | } |
2912 | ddca7f86 | M. Mohan Kumar | err += offset; |
2913 | ddca7f86 | M. Mohan Kumar | trace_v9fs_getlock_return(pdu->tag, pdu->id, glock.type, glock.start, |
2914 | ddca7f86 | M. Mohan Kumar | glock.length, glock.proc_id); |
2915 | 8f354003 | M. Mohan Kumar | out:
|
2916 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
2917 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2918 | e4e414a4 | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
2919 | ddca7f86 | M. Mohan Kumar | v9fs_string_free(&glock.client_id); |
2920 | 8f354003 | M. Mohan Kumar | } |
2921 | 8f354003 | M. Mohan Kumar | |
2922 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_mkdir(void *opaque) |
2923 | b67592ea | M. Mohan Kumar | { |
2924 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
2925 | e84861f7 | Venkateswararao Jujjuri | size_t offset = 7;
|
2926 | b67592ea | M. Mohan Kumar | int32_t fid; |
2927 | e84861f7 | Venkateswararao Jujjuri | struct stat stbuf;
|
2928 | e84861f7 | Venkateswararao Jujjuri | V9fsQID qid; |
2929 | 02cb7f3a | Aneesh Kumar K.V | V9fsString name; |
2930 | b67592ea | M. Mohan Kumar | V9fsFidState *fidp; |
2931 | b67592ea | M. Mohan Kumar | gid_t gid; |
2932 | b67592ea | M. Mohan Kumar | int mode;
|
2933 | e84861f7 | Venkateswararao Jujjuri | int err = 0; |
2934 | b67592ea | M. Mohan Kumar | |
2935 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&name); |
2936 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dsdd", &fid, &name, &mode, &gid);
|
2937 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2938 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
2939 | ddca7f86 | M. Mohan Kumar | } |
2940 | c572f23a | Harsh Prateek Bora | trace_v9fs_mkdir(pdu->tag, pdu->id, fid, name.data, mode, gid); |
2941 | c572f23a | Harsh Prateek Bora | |
2942 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
2943 | b67592ea | M. Mohan Kumar | if (fidp == NULL) { |
2944 | b67592ea | M. Mohan Kumar | err = -ENOENT; |
2945 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2946 | b67592ea | M. Mohan Kumar | } |
2947 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_mkdir(pdu, fidp, &name, mode, fidp->uid, gid, &stbuf); |
2948 | e84861f7 | Venkateswararao Jujjuri | if (err < 0) { |
2949 | e84861f7 | Venkateswararao Jujjuri | goto out;
|
2950 | e84861f7 | Venkateswararao Jujjuri | } |
2951 | e84861f7 | Venkateswararao Jujjuri | stat_to_qid(&stbuf, &qid); |
2952 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "Q", &qid);
|
2953 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2954 | ddca7f86 | M. Mohan Kumar | goto out;
|
2955 | ddca7f86 | M. Mohan Kumar | } |
2956 | ddca7f86 | M. Mohan Kumar | err += offset; |
2957 | 7999f7e1 | Aneesh Kumar K.V | trace_v9fs_mkdir_return(pdu->tag, pdu->id, |
2958 | 7999f7e1 | Aneesh Kumar K.V | qid.type, qid.version, qid.path, err); |
2959 | b67592ea | M. Mohan Kumar | out:
|
2960 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
2961 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2962 | e84861f7 | Venkateswararao Jujjuri | complete_pdu(pdu->s, pdu, err); |
2963 | e84861f7 | Venkateswararao Jujjuri | v9fs_string_free(&name); |
2964 | b67592ea | M. Mohan Kumar | } |
2965 | b67592ea | M. Mohan Kumar | |
2966 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_xattrwalk(void *opaque) |
2967 | fa32ef88 | Aneesh Kumar K.V | { |
2968 | 670185a6 | Aneesh Kumar K.V | int64_t size; |
2969 | 670185a6 | Aneesh Kumar K.V | V9fsString name; |
2970 | fa32ef88 | Aneesh Kumar K.V | ssize_t err = 0;
|
2971 | 670185a6 | Aneesh Kumar K.V | size_t offset = 7;
|
2972 | fa32ef88 | Aneesh Kumar K.V | int32_t fid, newfid; |
2973 | 670185a6 | Aneesh Kumar K.V | V9fsFidState *file_fidp; |
2974 | 84dfb926 | Aneesh Kumar K.V | V9fsFidState *xattr_fidp = NULL;
|
2975 | 670185a6 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
2976 | 670185a6 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
2977 | fa32ef88 | Aneesh Kumar K.V | |
2978 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&name); |
2979 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dds", &fid, &newfid, &name);
|
2980 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
2981 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
2982 | ddca7f86 | M. Mohan Kumar | } |
2983 | c572f23a | Harsh Prateek Bora | trace_v9fs_xattrwalk(pdu->tag, pdu->id, fid, newfid, name.data); |
2984 | c572f23a | Harsh Prateek Bora | |
2985 | bccacf6c | Aneesh Kumar K.V | file_fidp = get_fid(pdu, fid); |
2986 | 670185a6 | Aneesh Kumar K.V | if (file_fidp == NULL) { |
2987 | fa32ef88 | Aneesh Kumar K.V | err = -ENOENT; |
2988 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2989 | fa32ef88 | Aneesh Kumar K.V | } |
2990 | 670185a6 | Aneesh Kumar K.V | xattr_fidp = alloc_fid(s, newfid); |
2991 | 670185a6 | Aneesh Kumar K.V | if (xattr_fidp == NULL) { |
2992 | fa32ef88 | Aneesh Kumar K.V | err = -EINVAL; |
2993 | fa32ef88 | Aneesh Kumar K.V | goto out;
|
2994 | fa32ef88 | Aneesh Kumar K.V | } |
2995 | 2289be19 | Aneesh Kumar K.V | v9fs_path_copy(&xattr_fidp->path, &file_fidp->path); |
2996 | ddca7f86 | M. Mohan Kumar | if (name.data == NULL) { |
2997 | fa32ef88 | Aneesh Kumar K.V | /*
|
2998 | fa32ef88 | Aneesh Kumar K.V | * listxattr request. Get the size first
|
2999 | fa32ef88 | Aneesh Kumar K.V | */
|
3000 | bccacf6c | Aneesh Kumar K.V | size = v9fs_co_llistxattr(pdu, &xattr_fidp->path, NULL, 0); |
3001 | 670185a6 | Aneesh Kumar K.V | if (size < 0) { |
3002 | 670185a6 | Aneesh Kumar K.V | err = size; |
3003 | 84dfb926 | Aneesh Kumar K.V | clunk_fid(s, xattr_fidp->fid); |
3004 | 670185a6 | Aneesh Kumar K.V | goto out;
|
3005 | fa32ef88 | Aneesh Kumar K.V | } |
3006 | 670185a6 | Aneesh Kumar K.V | /*
|
3007 | 670185a6 | Aneesh Kumar K.V | * Read the xattr value
|
3008 | 670185a6 | Aneesh Kumar K.V | */
|
3009 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fs.xattr.len = size; |
3010 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fid_type = P9_FID_XATTR; |
3011 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fs.xattr.copied_len = -1;
|
3012 | 670185a6 | Aneesh Kumar K.V | if (size) {
|
3013 | 7267c094 | Anthony Liguori | xattr_fidp->fs.xattr.value = g_malloc(size); |
3014 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_llistxattr(pdu, &xattr_fidp->path, |
3015 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fs.xattr.value, |
3016 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fs.xattr.len); |
3017 | 670185a6 | Aneesh Kumar K.V | if (err < 0) { |
3018 | 84dfb926 | Aneesh Kumar K.V | clunk_fid(s, xattr_fidp->fid); |
3019 | 670185a6 | Aneesh Kumar K.V | goto out;
|
3020 | 670185a6 | Aneesh Kumar K.V | } |
3021 | 670185a6 | Aneesh Kumar K.V | } |
3022 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "q", size);
|
3023 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
3024 | ddca7f86 | M. Mohan Kumar | goto out;
|
3025 | ddca7f86 | M. Mohan Kumar | } |
3026 | ddca7f86 | M. Mohan Kumar | err += offset; |
3027 | fa32ef88 | Aneesh Kumar K.V | } else {
|
3028 | fa32ef88 | Aneesh Kumar K.V | /*
|
3029 | fa32ef88 | Aneesh Kumar K.V | * specific xattr fid. We check for xattr
|
3030 | fa32ef88 | Aneesh Kumar K.V | * presence also collect the xattr size
|
3031 | fa32ef88 | Aneesh Kumar K.V | */
|
3032 | bccacf6c | Aneesh Kumar K.V | size = v9fs_co_lgetxattr(pdu, &xattr_fidp->path, |
3033 | 670185a6 | Aneesh Kumar K.V | &name, NULL, 0); |
3034 | 670185a6 | Aneesh Kumar K.V | if (size < 0) { |
3035 | 670185a6 | Aneesh Kumar K.V | err = size; |
3036 | 84dfb926 | Aneesh Kumar K.V | clunk_fid(s, xattr_fidp->fid); |
3037 | 670185a6 | Aneesh Kumar K.V | goto out;
|
3038 | fa32ef88 | Aneesh Kumar K.V | } |
3039 | 670185a6 | Aneesh Kumar K.V | /*
|
3040 | 670185a6 | Aneesh Kumar K.V | * Read the xattr value
|
3041 | 670185a6 | Aneesh Kumar K.V | */
|
3042 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fs.xattr.len = size; |
3043 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fid_type = P9_FID_XATTR; |
3044 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fs.xattr.copied_len = -1;
|
3045 | 670185a6 | Aneesh Kumar K.V | if (size) {
|
3046 | 7267c094 | Anthony Liguori | xattr_fidp->fs.xattr.value = g_malloc(size); |
3047 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_lgetxattr(pdu, &xattr_fidp->path, |
3048 | 670185a6 | Aneesh Kumar K.V | &name, xattr_fidp->fs.xattr.value, |
3049 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fs.xattr.len); |
3050 | 670185a6 | Aneesh Kumar K.V | if (err < 0) { |
3051 | 84dfb926 | Aneesh Kumar K.V | clunk_fid(s, xattr_fidp->fid); |
3052 | 670185a6 | Aneesh Kumar K.V | goto out;
|
3053 | 670185a6 | Aneesh Kumar K.V | } |
3054 | 670185a6 | Aneesh Kumar K.V | } |
3055 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "q", size);
|
3056 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
3057 | ddca7f86 | M. Mohan Kumar | goto out;
|
3058 | ddca7f86 | M. Mohan Kumar | } |
3059 | ddca7f86 | M. Mohan Kumar | err += offset; |
3060 | fa32ef88 | Aneesh Kumar K.V | } |
3061 | 7999f7e1 | Aneesh Kumar K.V | trace_v9fs_xattrwalk_return(pdu->tag, pdu->id, size); |
3062 | fa32ef88 | Aneesh Kumar K.V | out:
|
3063 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, file_fidp); |
3064 | 84dfb926 | Aneesh Kumar K.V | if (xattr_fidp) {
|
3065 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, xattr_fidp); |
3066 | 84dfb926 | Aneesh Kumar K.V | } |
3067 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
3068 | 670185a6 | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
3069 | 670185a6 | Aneesh Kumar K.V | v9fs_string_free(&name); |
3070 | fa32ef88 | Aneesh Kumar K.V | } |
3071 | fa32ef88 | Aneesh Kumar K.V | |
3072 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_xattrcreate(void *opaque) |
3073 | 10b468bd | Aneesh Kumar K.V | { |
3074 | 10b468bd | Aneesh Kumar K.V | int flags;
|
3075 | 10b468bd | Aneesh Kumar K.V | int32_t fid; |
3076 | f10ff58d | Aneesh Kumar K.V | int64_t size; |
3077 | 10b468bd | Aneesh Kumar K.V | ssize_t err = 0;
|
3078 | f10ff58d | Aneesh Kumar K.V | V9fsString name; |
3079 | f10ff58d | Aneesh Kumar K.V | size_t offset = 7;
|
3080 | f10ff58d | Aneesh Kumar K.V | V9fsFidState *file_fidp; |
3081 | f10ff58d | Aneesh Kumar K.V | V9fsFidState *xattr_fidp; |
3082 | f10ff58d | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
3083 | f10ff58d | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
3084 | 10b468bd | Aneesh Kumar K.V | |
3085 | ddca7f86 | M. Mohan Kumar | v9fs_string_init(&name); |
3086 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "dsqd", &fid, &name, &size, &flags);
|
3087 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
3088 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
3089 | ddca7f86 | M. Mohan Kumar | } |
3090 | c572f23a | Harsh Prateek Bora | trace_v9fs_xattrcreate(pdu->tag, pdu->id, fid, name.data, size, flags); |
3091 | 10b468bd | Aneesh Kumar K.V | |
3092 | bccacf6c | Aneesh Kumar K.V | file_fidp = get_fid(pdu, fid); |
3093 | f10ff58d | Aneesh Kumar K.V | if (file_fidp == NULL) { |
3094 | 10b468bd | Aneesh Kumar K.V | err = -EINVAL; |
3095 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
3096 | 10b468bd | Aneesh Kumar K.V | } |
3097 | 10b468bd | Aneesh Kumar K.V | /* Make the file fid point to xattr */
|
3098 | f10ff58d | Aneesh Kumar K.V | xattr_fidp = file_fidp; |
3099 | f10ff58d | Aneesh Kumar K.V | xattr_fidp->fid_type = P9_FID_XATTR; |
3100 | f10ff58d | Aneesh Kumar K.V | xattr_fidp->fs.xattr.copied_len = 0;
|
3101 | f10ff58d | Aneesh Kumar K.V | xattr_fidp->fs.xattr.len = size; |
3102 | f10ff58d | Aneesh Kumar K.V | xattr_fidp->fs.xattr.flags = flags; |
3103 | f10ff58d | Aneesh Kumar K.V | v9fs_string_init(&xattr_fidp->fs.xattr.name); |
3104 | f10ff58d | Aneesh Kumar K.V | v9fs_string_copy(&xattr_fidp->fs.xattr.name, &name); |
3105 | 6528499f | Markus Armbruster | xattr_fidp->fs.xattr.value = g_malloc(size); |
3106 | f10ff58d | Aneesh Kumar K.V | err = offset; |
3107 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, file_fidp); |
3108 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
3109 | f10ff58d | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
3110 | f10ff58d | Aneesh Kumar K.V | v9fs_string_free(&name); |
3111 | 10b468bd | Aneesh Kumar K.V | } |
3112 | fa32ef88 | Aneesh Kumar K.V | |
3113 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_readlink(void *opaque) |
3114 | df0973a4 | M. Mohan Kumar | { |
3115 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
3116 | 7a5ca31e | Venkateswararao Jujjuri | size_t offset = 7;
|
3117 | 7a5ca31e | Venkateswararao Jujjuri | V9fsString target; |
3118 | df0973a4 | M. Mohan Kumar | int32_t fid; |
3119 | df0973a4 | M. Mohan Kumar | int err = 0; |
3120 | df0973a4 | M. Mohan Kumar | V9fsFidState *fidp; |
3121 | df0973a4 | M. Mohan Kumar | |
3122 | ddca7f86 | M. Mohan Kumar | err = pdu_unmarshal(pdu, offset, "d", &fid);
|
3123 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
3124 | ddca7f86 | M. Mohan Kumar | goto out_nofid;
|
3125 | ddca7f86 | M. Mohan Kumar | } |
3126 | c572f23a | Harsh Prateek Bora | trace_v9fs_readlink(pdu->tag, pdu->id, fid); |
3127 | bccacf6c | Aneesh Kumar K.V | fidp = get_fid(pdu, fid); |
3128 | df0973a4 | M. Mohan Kumar | if (fidp == NULL) { |
3129 | df0973a4 | M. Mohan Kumar | err = -ENOENT; |
3130 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
3131 | df0973a4 | M. Mohan Kumar | } |
3132 | df0973a4 | M. Mohan Kumar | |
3133 | 7a5ca31e | Venkateswararao Jujjuri | v9fs_string_init(&target); |
3134 | bccacf6c | Aneesh Kumar K.V | err = v9fs_co_readlink(pdu, &fidp->path, &target); |
3135 | 7a5ca31e | Venkateswararao Jujjuri | if (err < 0) { |
3136 | 7a5ca31e | Venkateswararao Jujjuri | goto out;
|
3137 | 7a5ca31e | Venkateswararao Jujjuri | } |
3138 | ddca7f86 | M. Mohan Kumar | err = pdu_marshal(pdu, offset, "s", &target);
|
3139 | ddca7f86 | M. Mohan Kumar | if (err < 0) { |
3140 | ddca7f86 | M. Mohan Kumar | v9fs_string_free(&target); |
3141 | ddca7f86 | M. Mohan Kumar | goto out;
|
3142 | ddca7f86 | M. Mohan Kumar | } |
3143 | ddca7f86 | M. Mohan Kumar | err += offset; |
3144 | 7999f7e1 | Aneesh Kumar K.V | trace_v9fs_readlink_return(pdu->tag, pdu->id, target.data); |
3145 | 7a5ca31e | Venkateswararao Jujjuri | v9fs_string_free(&target); |
3146 | df0973a4 | M. Mohan Kumar | out:
|
3147 | bccacf6c | Aneesh Kumar K.V | put_fid(pdu, fidp); |
3148 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
3149 | 7a5ca31e | Venkateswararao Jujjuri | complete_pdu(pdu->s, pdu, err); |
3150 | df0973a4 | M. Mohan Kumar | } |
3151 | df0973a4 | M. Mohan Kumar | |
3152 | ff06030f | Venkateswararao Jujjuri (JV) | static CoroutineEntry *pdu_co_handlers[] = {
|
3153 | c18e2f94 | Sripathi Kodi | [P9_TREADDIR] = v9fs_readdir, |
3154 | be940c87 | M. Mohan Kumar | [P9_TSTATFS] = v9fs_statfs, |
3155 | 00ede4c2 | Sripathi Kodi | [P9_TGETATTR] = v9fs_getattr, |
3156 | c79ce737 | Sripathi Kodi | [P9_TSETATTR] = v9fs_setattr, |
3157 | fa32ef88 | Aneesh Kumar K.V | [P9_TXATTRWALK] = v9fs_xattrwalk, |
3158 | 10b468bd | Aneesh Kumar K.V | [P9_TXATTRCREATE] = v9fs_xattrcreate, |
3159 | 5268cecc | M. Mohan Kumar | [P9_TMKNOD] = v9fs_mknod, |
3160 | c7b4b0b3 | M. Mohan Kumar | [P9_TRENAME] = v9fs_rename, |
3161 | 82cc3ee8 | M. Mohan Kumar | [P9_TLOCK] = v9fs_lock, |
3162 | 8f354003 | M. Mohan Kumar | [P9_TGETLOCK] = v9fs_getlock, |
3163 | 89bf6593 | Aneesh Kumar K.V | [P9_TRENAMEAT] = v9fs_renameat, |
3164 | df0973a4 | M. Mohan Kumar | [P9_TREADLINK] = v9fs_readlink, |
3165 | 7834cf77 | Aneesh Kumar K.V | [P9_TUNLINKAT] = v9fs_unlinkat, |
3166 | b67592ea | M. Mohan Kumar | [P9_TMKDIR] = v9fs_mkdir, |
3167 | 9f107513 | Anthony Liguori | [P9_TVERSION] = v9fs_version, |
3168 | 771e9d4c | M. Mohan Kumar | [P9_TLOPEN] = v9fs_open, |
3169 | 9f107513 | Anthony Liguori | [P9_TATTACH] = v9fs_attach, |
3170 | 9f107513 | Anthony Liguori | [P9_TSTAT] = v9fs_stat, |
3171 | 9f107513 | Anthony Liguori | [P9_TWALK] = v9fs_walk, |
3172 | 9f107513 | Anthony Liguori | [P9_TCLUNK] = v9fs_clunk, |
3173 | b41e95d3 | Venkateswararao Jujjuri (JV) | [P9_TFSYNC] = v9fs_fsync, |
3174 | 9f107513 | Anthony Liguori | [P9_TOPEN] = v9fs_open, |
3175 | 9f107513 | Anthony Liguori | [P9_TREAD] = v9fs_read, |
3176 | 9f107513 | Anthony Liguori | #if 0
|
3177 | 9f107513 | Anthony Liguori | [P9_TAUTH] = v9fs_auth,
|
3178 | 9f107513 | Anthony Liguori | #endif
|
3179 | 9f107513 | Anthony Liguori | [P9_TFLUSH] = v9fs_flush, |
3180 | b2c224be | Venkateswararao Jujjuri (JV) | [P9_TLINK] = v9fs_link, |
3181 | 08c60fc9 | Venkateswararao Jujjuri (JV) | [P9_TSYMLINK] = v9fs_symlink, |
3182 | 9f107513 | Anthony Liguori | [P9_TCREATE] = v9fs_create, |
3183 | c1568af5 | Venkateswararao Jujjuri (JV) | [P9_TLCREATE] = v9fs_lcreate, |
3184 | 9f107513 | Anthony Liguori | [P9_TWRITE] = v9fs_write, |
3185 | 9f107513 | Anthony Liguori | [P9_TWSTAT] = v9fs_wstat, |
3186 | 9f107513 | Anthony Liguori | [P9_TREMOVE] = v9fs_remove, |
3187 | 9f107513 | Anthony Liguori | }; |
3188 | 9f107513 | Anthony Liguori | |
3189 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_op_not_supp(void *opaque) |
3190 | 5c3234c6 | Aneesh Kumar K.V | { |
3191 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
3192 | ff06030f | Venkateswararao Jujjuri (JV) | complete_pdu(pdu->s, pdu, -EOPNOTSUPP); |
3193 | 5c3234c6 | Aneesh Kumar K.V | } |
3194 | 5c3234c6 | Aneesh Kumar K.V | |
3195 | 2c74c2cb | M. Mohan Kumar | static void v9fs_fs_ro(void *opaque) |
3196 | 2c74c2cb | M. Mohan Kumar | { |
3197 | 2c74c2cb | M. Mohan Kumar | V9fsPDU *pdu = opaque; |
3198 | 2c74c2cb | M. Mohan Kumar | complete_pdu(pdu->s, pdu, -EROFS); |
3199 | 2c74c2cb | M. Mohan Kumar | } |
3200 | 2c74c2cb | M. Mohan Kumar | |
3201 | 2c74c2cb | M. Mohan Kumar | static inline bool is_read_only_op(V9fsPDU *pdu) |
3202 | 2c74c2cb | M. Mohan Kumar | { |
3203 | 2c74c2cb | M. Mohan Kumar | switch (pdu->id) {
|
3204 | 2c74c2cb | M. Mohan Kumar | case P9_TREADDIR:
|
3205 | 2c74c2cb | M. Mohan Kumar | case P9_TSTATFS:
|
3206 | 2c74c2cb | M. Mohan Kumar | case P9_TGETATTR:
|
3207 | 2c74c2cb | M. Mohan Kumar | case P9_TXATTRWALK:
|
3208 | 2c74c2cb | M. Mohan Kumar | case P9_TLOCK:
|
3209 | 2c74c2cb | M. Mohan Kumar | case P9_TGETLOCK:
|
3210 | 2c74c2cb | M. Mohan Kumar | case P9_TREADLINK:
|
3211 | 2c74c2cb | M. Mohan Kumar | case P9_TVERSION:
|
3212 | 2c74c2cb | M. Mohan Kumar | case P9_TLOPEN:
|
3213 | 2c74c2cb | M. Mohan Kumar | case P9_TATTACH:
|
3214 | 2c74c2cb | M. Mohan Kumar | case P9_TSTAT:
|
3215 | 2c74c2cb | M. Mohan Kumar | case P9_TWALK:
|
3216 | 2c74c2cb | M. Mohan Kumar | case P9_TCLUNK:
|
3217 | 2c74c2cb | M. Mohan Kumar | case P9_TFSYNC:
|
3218 | 2c74c2cb | M. Mohan Kumar | case P9_TOPEN:
|
3219 | 2c74c2cb | M. Mohan Kumar | case P9_TREAD:
|
3220 | 2c74c2cb | M. Mohan Kumar | case P9_TAUTH:
|
3221 | 2c74c2cb | M. Mohan Kumar | case P9_TFLUSH:
|
3222 | 2c74c2cb | M. Mohan Kumar | return 1; |
3223 | 2c74c2cb | M. Mohan Kumar | default:
|
3224 | 2c74c2cb | M. Mohan Kumar | return 0; |
3225 | 2c74c2cb | M. Mohan Kumar | } |
3226 | 2c74c2cb | M. Mohan Kumar | } |
3227 | 2c74c2cb | M. Mohan Kumar | |
3228 | 9f107513 | Anthony Liguori | static void submit_pdu(V9fsState *s, V9fsPDU *pdu) |
3229 | 9f107513 | Anthony Liguori | { |
3230 | ff06030f | Venkateswararao Jujjuri (JV) | Coroutine *co; |
3231 | ff06030f | Venkateswararao Jujjuri (JV) | CoroutineEntry *handler; |
3232 | 9f107513 | Anthony Liguori | |
3233 | ff06030f | Venkateswararao Jujjuri (JV) | if (pdu->id >= ARRAY_SIZE(pdu_co_handlers) ||
|
3234 | ff06030f | Venkateswararao Jujjuri (JV) | (pdu_co_handlers[pdu->id] == NULL)) {
|
3235 | 5c3234c6 | Aneesh Kumar K.V | handler = v9fs_op_not_supp; |
3236 | 5c3234c6 | Aneesh Kumar K.V | } else {
|
3237 | ff06030f | Venkateswararao Jujjuri (JV) | handler = pdu_co_handlers[pdu->id]; |
3238 | 5c3234c6 | Aneesh Kumar K.V | } |
3239 | 2c74c2cb | M. Mohan Kumar | |
3240 | 2c74c2cb | M. Mohan Kumar | if (is_ro_export(&s->ctx) && !is_read_only_op(pdu)) {
|
3241 | 2c74c2cb | M. Mohan Kumar | handler = v9fs_fs_ro; |
3242 | 2c74c2cb | M. Mohan Kumar | } |
3243 | ff06030f | Venkateswararao Jujjuri (JV) | co = qemu_coroutine_create(handler); |
3244 | ff06030f | Venkateswararao Jujjuri (JV) | qemu_coroutine_enter(co, pdu); |
3245 | 9f107513 | Anthony Liguori | } |
3246 | 9f107513 | Anthony Liguori | |
3247 | f4f61d27 | Aneesh Kumar K.V | void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq)
|
3248 | 9f107513 | Anthony Liguori | { |
3249 | 9f107513 | Anthony Liguori | V9fsState *s = (V9fsState *)vdev; |
3250 | 9f107513 | Anthony Liguori | V9fsPDU *pdu; |
3251 | 9f107513 | Anthony Liguori | ssize_t len; |
3252 | 9f107513 | Anthony Liguori | |
3253 | 9f107513 | Anthony Liguori | while ((pdu = alloc_pdu(s)) &&
|
3254 | 9f107513 | Anthony Liguori | (len = virtqueue_pop(vq, &pdu->elem)) != 0) {
|
3255 | 9f107513 | Anthony Liguori | uint8_t *ptr; |
3256 | ff06030f | Venkateswararao Jujjuri (JV) | pdu->s = s; |
3257 | 9f107513 | Anthony Liguori | BUG_ON(pdu->elem.out_num == 0 || pdu->elem.in_num == 0); |
3258 | 9f107513 | Anthony Liguori | BUG_ON(pdu->elem.out_sg[0].iov_len < 7); |
3259 | 9f107513 | Anthony Liguori | |
3260 | 9f107513 | Anthony Liguori | ptr = pdu->elem.out_sg[0].iov_base;
|
3261 | 9f107513 | Anthony Liguori | |
3262 | 67d6fa53 | Benjamin Herrenschmidt | pdu->size = le32_to_cpu(*(uint32_t *)ptr); |
3263 | 9f107513 | Anthony Liguori | pdu->id = ptr[4];
|
3264 | 67d6fa53 | Benjamin Herrenschmidt | pdu->tag = le16_to_cpu(*(uint16_t *)(ptr + 5));
|
3265 | bccacf6c | Aneesh Kumar K.V | qemu_co_queue_init(&pdu->complete); |
3266 | 9f107513 | Anthony Liguori | submit_pdu(s, pdu); |
3267 | 9f107513 | Anthony Liguori | } |
3268 | 9f107513 | Anthony Liguori | free_pdu(s, pdu); |
3269 | 9f107513 | Anthony Liguori | } |
3270 | 7a462745 | Aneesh Kumar K.V | |
3271 | 60653b28 | Paolo Bonzini | static void __attribute__((__constructor__)) virtio_9p_set_fd_limit(void) |
3272 | 7a462745 | Aneesh Kumar K.V | { |
3273 | 7a462745 | Aneesh Kumar K.V | struct rlimit rlim;
|
3274 | 7a462745 | Aneesh Kumar K.V | if (getrlimit(RLIMIT_NOFILE, &rlim) < 0) { |
3275 | 7a462745 | Aneesh Kumar K.V | fprintf(stderr, "Failed to get the resource limit\n");
|
3276 | 7a462745 | Aneesh Kumar K.V | exit(1);
|
3277 | 7a462745 | Aneesh Kumar K.V | } |
3278 | 7a462745 | Aneesh Kumar K.V | open_fd_hw = rlim.rlim_cur - MIN(400, rlim.rlim_cur/3); |
3279 | 7a462745 | Aneesh Kumar K.V | open_fd_rc = rlim.rlim_cur/2;
|
3280 | 7a462745 | Aneesh Kumar K.V | } |