root / hw / 9pfs / virtio-9p.c @ 7834cf77
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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 | 873c3213 | Stefan Weil | #include "hw/virtio.h" |
15 | 873c3213 | Stefan Weil | #include "hw/pc.h" |
16 | 9f107513 | Anthony Liguori | #include "qemu_socket.h" |
17 | 873c3213 | Stefan Weil | #include "hw/virtio-pci.h" |
18 | 9f107513 | Anthony Liguori | #include "virtio-9p.h" |
19 | 9f107513 | Anthony Liguori | #include "fsdev/qemu-fsdev.h" |
20 | 9f107513 | Anthony Liguori | #include "virtio-9p-debug.h" |
21 | fc22118d | Aneesh Kumar K.V | #include "virtio-9p-xattr.h" |
22 | ff06030f | Venkateswararao Jujjuri (JV) | #include "virtio-9p-coth.h" |
23 | 9f107513 | Anthony Liguori | |
24 | 9f107513 | Anthony Liguori | int debug_9p_pdu;
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25 | 7a462745 | Aneesh Kumar K.V | int open_fd_hw;
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26 | 7a462745 | Aneesh Kumar K.V | int total_open_fd;
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27 | 7a462745 | Aneesh Kumar K.V | static int open_fd_rc; |
28 | 9f107513 | Anthony Liguori | |
29 | fac4f111 | Venkateswararao Jujjuri (JV) | enum {
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30 | fac4f111 | Venkateswararao Jujjuri (JV) | Oread = 0x00,
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31 | fac4f111 | Venkateswararao Jujjuri (JV) | Owrite = 0x01,
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32 | fac4f111 | Venkateswararao Jujjuri (JV) | Ordwr = 0x02,
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33 | fac4f111 | Venkateswararao Jujjuri (JV) | Oexec = 0x03,
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34 | fac4f111 | Venkateswararao Jujjuri (JV) | Oexcl = 0x04,
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35 | fac4f111 | Venkateswararao Jujjuri (JV) | Otrunc = 0x10,
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36 | fac4f111 | Venkateswararao Jujjuri (JV) | Orexec = 0x20,
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37 | fac4f111 | Venkateswararao Jujjuri (JV) | Orclose = 0x40,
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38 | fac4f111 | Venkateswararao Jujjuri (JV) | Oappend = 0x80,
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39 | fac4f111 | Venkateswararao Jujjuri (JV) | }; |
40 | fac4f111 | Venkateswararao Jujjuri (JV) | |
41 | fac4f111 | Venkateswararao Jujjuri (JV) | static int omode_to_uflags(int8_t mode) |
42 | fac4f111 | Venkateswararao Jujjuri (JV) | { |
43 | fac4f111 | Venkateswararao Jujjuri (JV) | int ret = 0; |
44 | fac4f111 | Venkateswararao Jujjuri (JV) | |
45 | fac4f111 | Venkateswararao Jujjuri (JV) | switch (mode & 3) { |
46 | fac4f111 | Venkateswararao Jujjuri (JV) | case Oread:
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47 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_RDONLY; |
48 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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49 | fac4f111 | Venkateswararao Jujjuri (JV) | case Ordwr:
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50 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_RDWR; |
51 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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52 | fac4f111 | Venkateswararao Jujjuri (JV) | case Owrite:
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53 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_WRONLY; |
54 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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55 | fac4f111 | Venkateswararao Jujjuri (JV) | case Oexec:
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56 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_RDONLY; |
57 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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58 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
59 | fac4f111 | Venkateswararao Jujjuri (JV) | |
60 | fac4f111 | Venkateswararao Jujjuri (JV) | if (mode & Otrunc) {
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61 | fac4f111 | Venkateswararao Jujjuri (JV) | ret |= O_TRUNC; |
62 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
63 | fac4f111 | Venkateswararao Jujjuri (JV) | |
64 | fac4f111 | Venkateswararao Jujjuri (JV) | if (mode & Oappend) {
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65 | fac4f111 | Venkateswararao Jujjuri (JV) | ret |= O_APPEND; |
66 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
67 | fac4f111 | Venkateswararao Jujjuri (JV) | |
68 | fac4f111 | Venkateswararao Jujjuri (JV) | if (mode & Oexcl) {
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69 | fac4f111 | Venkateswararao Jujjuri (JV) | ret |= O_EXCL; |
70 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
71 | fac4f111 | Venkateswararao Jujjuri (JV) | |
72 | fac4f111 | Venkateswararao Jujjuri (JV) | return ret;
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73 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
74 | fac4f111 | Venkateswararao Jujjuri (JV) | |
75 | 758e8e38 | Venkateswararao Jujjuri (JV) | void cred_init(FsCred *credp)
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76 | 131dcb25 | Anthony Liguori | { |
77 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_uid = -1;
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78 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_gid = -1;
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79 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_mode = -1;
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80 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_rdev = -1;
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81 | 131dcb25 | Anthony Liguori | } |
82 | 131dcb25 | Anthony Liguori | |
83 | a03f7874 | Anthony Liguori | static void v9fs_string_init(V9fsString *str) |
84 | a03f7874 | Anthony Liguori | { |
85 | a03f7874 | Anthony Liguori | str->data = NULL;
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86 | a03f7874 | Anthony Liguori | str->size = 0;
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87 | a03f7874 | Anthony Liguori | } |
88 | a03f7874 | Anthony Liguori | |
89 | a03f7874 | Anthony Liguori | static void v9fs_string_free(V9fsString *str) |
90 | a03f7874 | Anthony Liguori | { |
91 | 7267c094 | Anthony Liguori | g_free(str->data); |
92 | a03f7874 | Anthony Liguori | str->data = NULL;
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93 | a03f7874 | Anthony Liguori | str->size = 0;
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94 | a03f7874 | Anthony Liguori | } |
95 | a03f7874 | Anthony Liguori | |
96 | a03f7874 | Anthony Liguori | static void v9fs_string_null(V9fsString *str) |
97 | a03f7874 | Anthony Liguori | { |
98 | a03f7874 | Anthony Liguori | v9fs_string_free(str); |
99 | a03f7874 | Anthony Liguori | } |
100 | a03f7874 | Anthony Liguori | |
101 | a03f7874 | Anthony Liguori | static int number_to_string(void *arg, char type) |
102 | a03f7874 | Anthony Liguori | { |
103 | a03f7874 | Anthony Liguori | unsigned int ret = 0; |
104 | a03f7874 | Anthony Liguori | |
105 | a03f7874 | Anthony Liguori | switch (type) {
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106 | a03f7874 | Anthony Liguori | case 'u': { |
107 | a03f7874 | Anthony Liguori | unsigned int num = *(unsigned int *)arg; |
108 | a03f7874 | Anthony Liguori | |
109 | a03f7874 | Anthony Liguori | do {
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110 | a03f7874 | Anthony Liguori | ret++; |
111 | a03f7874 | Anthony Liguori | num = num/10;
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112 | a03f7874 | Anthony Liguori | } while (num);
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113 | a03f7874 | Anthony Liguori | break;
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114 | a03f7874 | Anthony Liguori | } |
115 | 45b23ff8 | Venkateswararao Jujjuri (JV) | case 'U': { |
116 | 45b23ff8 | Venkateswararao Jujjuri (JV) | unsigned long num = *(unsigned long *)arg; |
117 | 45b23ff8 | Venkateswararao Jujjuri (JV) | do {
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118 | 45b23ff8 | Venkateswararao Jujjuri (JV) | ret++; |
119 | 45b23ff8 | Venkateswararao Jujjuri (JV) | num = num/10;
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120 | 45b23ff8 | Venkateswararao Jujjuri (JV) | } while (num);
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121 | 45b23ff8 | Venkateswararao Jujjuri (JV) | break;
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122 | 45b23ff8 | Venkateswararao Jujjuri (JV) | } |
123 | a03f7874 | Anthony Liguori | default:
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124 | a03f7874 | Anthony Liguori | printf("Number_to_string: Unknown number format\n");
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125 | a03f7874 | Anthony Liguori | return -1; |
126 | a03f7874 | Anthony Liguori | } |
127 | a03f7874 | Anthony Liguori | |
128 | a03f7874 | Anthony Liguori | return ret;
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129 | a03f7874 | Anthony Liguori | } |
130 | a03f7874 | Anthony Liguori | |
131 | c9ba47dc | Stefan Weil | static int GCC_FMT_ATTR(2, 0) |
132 | c9ba47dc | Stefan Weil | v9fs_string_alloc_printf(char **strp, const char *fmt, va_list ap) |
133 | a03f7874 | Anthony Liguori | { |
134 | a03f7874 | Anthony Liguori | va_list ap2; |
135 | a03f7874 | Anthony Liguori | char *iter = (char *)fmt; |
136 | a03f7874 | Anthony Liguori | int len = 0; |
137 | a03f7874 | Anthony Liguori | int nr_args = 0; |
138 | a03f7874 | Anthony Liguori | char *arg_char_ptr;
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139 | a03f7874 | Anthony Liguori | unsigned int arg_uint; |
140 | 45b23ff8 | Venkateswararao Jujjuri (JV) | unsigned long arg_ulong; |
141 | a03f7874 | Anthony Liguori | |
142 | a03f7874 | Anthony Liguori | /* Find the number of %'s that denotes an argument */
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143 | a03f7874 | Anthony Liguori | for (iter = strstr(iter, "%"); iter; iter = strstr(iter, "%")) { |
144 | a03f7874 | Anthony Liguori | nr_args++; |
145 | a03f7874 | Anthony Liguori | iter++; |
146 | a03f7874 | Anthony Liguori | } |
147 | a03f7874 | Anthony Liguori | |
148 | a03f7874 | Anthony Liguori | len = strlen(fmt) - 2*nr_args;
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149 | a03f7874 | Anthony Liguori | |
150 | a03f7874 | Anthony Liguori | if (!nr_args) {
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151 | a03f7874 | Anthony Liguori | goto alloc_print;
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152 | a03f7874 | Anthony Liguori | } |
153 | a03f7874 | Anthony Liguori | |
154 | a03f7874 | Anthony Liguori | va_copy(ap2, ap); |
155 | a03f7874 | Anthony Liguori | |
156 | a03f7874 | Anthony Liguori | iter = (char *)fmt;
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157 | a03f7874 | Anthony Liguori | |
158 | a03f7874 | Anthony Liguori | /* Now parse the format string */
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159 | a03f7874 | Anthony Liguori | for (iter = strstr(iter, "%"); iter; iter = strstr(iter, "%")) { |
160 | a03f7874 | Anthony Liguori | iter++; |
161 | a03f7874 | Anthony Liguori | switch (*iter) {
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162 | a03f7874 | Anthony Liguori | case 'u': |
163 | a03f7874 | Anthony Liguori | arg_uint = va_arg(ap2, unsigned int); |
164 | a03f7874 | Anthony Liguori | len += number_to_string((void *)&arg_uint, 'u'); |
165 | a03f7874 | Anthony Liguori | break;
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166 | 45b23ff8 | Venkateswararao Jujjuri (JV) | case 'l': |
167 | 45b23ff8 | Venkateswararao Jujjuri (JV) | if (*++iter == 'u') { |
168 | 45b23ff8 | Venkateswararao Jujjuri (JV) | arg_ulong = va_arg(ap2, unsigned long); |
169 | 45b23ff8 | Venkateswararao Jujjuri (JV) | len += number_to_string((void *)&arg_ulong, 'U'); |
170 | 45b23ff8 | Venkateswararao Jujjuri (JV) | } else {
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171 | 45b23ff8 | Venkateswararao Jujjuri (JV) | return -1; |
172 | 45b23ff8 | Venkateswararao Jujjuri (JV) | } |
173 | 45b23ff8 | Venkateswararao Jujjuri (JV) | break;
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174 | a03f7874 | Anthony Liguori | case 's': |
175 | a03f7874 | Anthony Liguori | arg_char_ptr = va_arg(ap2, char *);
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176 | a03f7874 | Anthony Liguori | len += strlen(arg_char_ptr); |
177 | a03f7874 | Anthony Liguori | break;
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178 | a03f7874 | Anthony Liguori | case 'c': |
179 | a03f7874 | Anthony Liguori | len += 1;
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180 | a03f7874 | Anthony Liguori | break;
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181 | a03f7874 | Anthony Liguori | default:
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182 | a03f7874 | Anthony Liguori | fprintf(stderr, |
183 | a03f7874 | Anthony Liguori | "v9fs_string_alloc_printf:Incorrect format %c", *iter);
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184 | a03f7874 | Anthony Liguori | return -1; |
185 | a03f7874 | Anthony Liguori | } |
186 | a03f7874 | Anthony Liguori | iter++; |
187 | a03f7874 | Anthony Liguori | } |
188 | a03f7874 | Anthony Liguori | |
189 | a03f7874 | Anthony Liguori | alloc_print:
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190 | 7267c094 | Anthony Liguori | *strp = g_malloc((len + 1) * sizeof(**strp)); |
191 | a03f7874 | Anthony Liguori | |
192 | a03f7874 | Anthony Liguori | return vsprintf(*strp, fmt, ap);
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193 | a03f7874 | Anthony Liguori | } |
194 | a03f7874 | Anthony Liguori | |
195 | c9ba47dc | Stefan Weil | static void GCC_FMT_ATTR(2, 3) |
196 | c9ba47dc | Stefan Weil | v9fs_string_sprintf(V9fsString *str, const char *fmt, ...) |
197 | a03f7874 | Anthony Liguori | { |
198 | a03f7874 | Anthony Liguori | va_list ap; |
199 | a03f7874 | Anthony Liguori | int err;
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200 | a03f7874 | Anthony Liguori | |
201 | a03f7874 | Anthony Liguori | v9fs_string_free(str); |
202 | a03f7874 | Anthony Liguori | |
203 | a03f7874 | Anthony Liguori | va_start(ap, fmt); |
204 | a03f7874 | Anthony Liguori | err = v9fs_string_alloc_printf(&str->data, fmt, ap); |
205 | a03f7874 | Anthony Liguori | BUG_ON(err == -1);
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206 | a03f7874 | Anthony Liguori | va_end(ap); |
207 | a03f7874 | Anthony Liguori | |
208 | a03f7874 | Anthony Liguori | str->size = err; |
209 | a03f7874 | Anthony Liguori | } |
210 | a03f7874 | Anthony Liguori | |
211 | a03f7874 | Anthony Liguori | static void v9fs_string_copy(V9fsString *lhs, V9fsString *rhs) |
212 | a03f7874 | Anthony Liguori | { |
213 | a03f7874 | Anthony Liguori | v9fs_string_free(lhs); |
214 | a03f7874 | Anthony Liguori | v9fs_string_sprintf(lhs, "%s", rhs->data);
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215 | a03f7874 | Anthony Liguori | } |
216 | a03f7874 | Anthony Liguori | |
217 | 936532a4 | Malahal Naineni | /*
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218 | 936532a4 | Malahal Naineni | * Return TRUE if s1 is an ancestor of s2.
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219 | 936532a4 | Malahal Naineni | *
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220 | 936532a4 | Malahal Naineni | * E.g. "a/b" is an ancestor of "a/b/c" but not of "a/bc/d".
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221 | 936532a4 | Malahal Naineni | * As a special case, We treat s1 as ancestor of s2 if they are same!
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222 | 936532a4 | Malahal Naineni | */
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223 | 936532a4 | Malahal Naineni | static int v9fs_path_is_ancestor(V9fsString *s1, V9fsString *s2) |
224 | 936532a4 | Malahal Naineni | { |
225 | 936532a4 | Malahal Naineni | if (!strncmp(s1->data, s2->data, s1->size)) {
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226 | 936532a4 | Malahal Naineni | if (s2->data[s1->size] == '\0' || s2->data[s1->size] == '/') { |
227 | 936532a4 | Malahal Naineni | return 1; |
228 | 936532a4 | Malahal Naineni | } |
229 | 936532a4 | Malahal Naineni | } |
230 | 936532a4 | Malahal Naineni | return 0; |
231 | 936532a4 | Malahal Naineni | } |
232 | 936532a4 | Malahal Naineni | |
233 | a03f7874 | Anthony Liguori | static size_t v9fs_string_size(V9fsString *str)
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234 | a03f7874 | Anthony Liguori | { |
235 | a03f7874 | Anthony Liguori | return str->size;
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236 | a03f7874 | Anthony Liguori | } |
237 | a03f7874 | Anthony Liguori | |
238 | b9cb88b0 | Aneesh Kumar K.V | /*
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239 | b9cb88b0 | Aneesh Kumar K.V | * returns 0 if fid got re-opened, 1 if not, < 0 on error */
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240 | b9cb88b0 | Aneesh Kumar K.V | static int v9fs_reopen_fid(V9fsState *s, V9fsFidState *f) |
241 | b9cb88b0 | Aneesh Kumar K.V | { |
242 | b9cb88b0 | Aneesh Kumar K.V | int err = 1; |
243 | b9cb88b0 | Aneesh Kumar K.V | if (f->fid_type == P9_FID_FILE) {
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244 | b9cb88b0 | Aneesh Kumar K.V | if (f->fs.fd == -1) { |
245 | b9cb88b0 | Aneesh Kumar K.V | do {
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246 | b9cb88b0 | Aneesh Kumar K.V | err = v9fs_co_open(s, f, f->open_flags); |
247 | b9cb88b0 | Aneesh Kumar K.V | } while (err == -EINTR);
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248 | b9cb88b0 | Aneesh Kumar K.V | } |
249 | b9cb88b0 | Aneesh Kumar K.V | } else if (f->fid_type == P9_FID_DIR) { |
250 | b9cb88b0 | Aneesh Kumar K.V | if (f->fs.dir == NULL) { |
251 | b9cb88b0 | Aneesh Kumar K.V | do {
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252 | b9cb88b0 | Aneesh Kumar K.V | err = v9fs_co_opendir(s, f); |
253 | b9cb88b0 | Aneesh Kumar K.V | } while (err == -EINTR);
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254 | b9cb88b0 | Aneesh Kumar K.V | } |
255 | b9cb88b0 | Aneesh Kumar K.V | } |
256 | b9cb88b0 | Aneesh Kumar K.V | return err;
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257 | b9cb88b0 | Aneesh Kumar K.V | } |
258 | b9cb88b0 | Aneesh Kumar K.V | |
259 | 84dfb926 | Aneesh Kumar K.V | static V9fsFidState *get_fid(V9fsState *s, int32_t fid)
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260 | 286d5652 | Anthony Liguori | { |
261 | 7a462745 | Aneesh Kumar K.V | int err;
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262 | 286d5652 | Anthony Liguori | V9fsFidState *f; |
263 | 286d5652 | Anthony Liguori | |
264 | 286d5652 | Anthony Liguori | for (f = s->fid_list; f; f = f->next) {
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265 | 84dfb926 | Aneesh Kumar K.V | BUG_ON(f->clunked); |
266 | 286d5652 | Anthony Liguori | if (f->fid == fid) {
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267 | 7a462745 | Aneesh Kumar K.V | /*
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268 | 7a462745 | Aneesh Kumar K.V | * Update the fid ref upfront so that
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269 | 7a462745 | Aneesh Kumar K.V | * we don't get reclaimed when we yield
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270 | 7a462745 | Aneesh Kumar K.V | * in open later.
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271 | 7a462745 | Aneesh Kumar K.V | */
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272 | 84dfb926 | Aneesh Kumar K.V | f->ref++; |
273 | 7a462745 | Aneesh Kumar K.V | /*
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274 | 7a462745 | Aneesh Kumar K.V | * check whether we need to reopen the
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275 | 7a462745 | Aneesh Kumar K.V | * file. We might have closed the fd
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276 | 7a462745 | Aneesh Kumar K.V | * while trying to free up some file
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277 | 7a462745 | Aneesh Kumar K.V | * descriptors.
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278 | 7a462745 | Aneesh Kumar K.V | */
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279 | b9cb88b0 | Aneesh Kumar K.V | err = v9fs_reopen_fid(s, f); |
280 | b9cb88b0 | Aneesh Kumar K.V | if (err < 0) { |
281 | b9cb88b0 | Aneesh Kumar K.V | f->ref--; |
282 | b9cb88b0 | Aneesh Kumar K.V | return NULL; |
283 | b9cb88b0 | Aneesh Kumar K.V | } |
284 | 7a462745 | Aneesh Kumar K.V | /*
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285 | 7a462745 | Aneesh Kumar K.V | * Mark the fid as referenced so that the LRU
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286 | 7a462745 | Aneesh Kumar K.V | * reclaim won't close the file descriptor
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287 | 7a462745 | Aneesh Kumar K.V | */
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288 | 7a462745 | Aneesh Kumar K.V | f->flags |= FID_REFERENCED; |
289 | 286d5652 | Anthony Liguori | return f;
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290 | 286d5652 | Anthony Liguori | } |
291 | 286d5652 | Anthony Liguori | } |
292 | 286d5652 | Anthony Liguori | return NULL; |
293 | 286d5652 | Anthony Liguori | } |
294 | 286d5652 | Anthony Liguori | |
295 | 286d5652 | Anthony Liguori | static V9fsFidState *alloc_fid(V9fsState *s, int32_t fid)
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296 | 286d5652 | Anthony Liguori | { |
297 | 286d5652 | Anthony Liguori | V9fsFidState *f; |
298 | 286d5652 | Anthony Liguori | |
299 | 84dfb926 | Aneesh Kumar K.V | for (f = s->fid_list; f; f = f->next) {
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300 | 84dfb926 | Aneesh Kumar K.V | /* If fid is already there return NULL */
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301 | 84dfb926 | Aneesh Kumar K.V | BUG_ON(f->clunked); |
302 | 84dfb926 | Aneesh Kumar K.V | if (f->fid == fid) {
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303 | 84dfb926 | Aneesh Kumar K.V | return NULL; |
304 | 84dfb926 | Aneesh Kumar K.V | } |
305 | 286d5652 | Anthony Liguori | } |
306 | 7267c094 | Anthony Liguori | f = g_malloc0(sizeof(V9fsFidState));
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307 | 286d5652 | Anthony Liguori | f->fid = fid; |
308 | d62dbb51 | Aneesh Kumar K.V | f->fid_type = P9_FID_NONE; |
309 | 84dfb926 | Aneesh Kumar K.V | f->ref = 1;
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310 | 7a462745 | Aneesh Kumar K.V | /*
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311 | 7a462745 | Aneesh Kumar K.V | * Mark the fid as referenced so that the LRU
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312 | 7a462745 | Aneesh Kumar K.V | * reclaim won't close the file descriptor
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313 | 7a462745 | Aneesh Kumar K.V | */
|
314 | 7a462745 | Aneesh Kumar K.V | f->flags |= FID_REFERENCED; |
315 | 286d5652 | Anthony Liguori | f->next = s->fid_list; |
316 | 286d5652 | Anthony Liguori | s->fid_list = f; |
317 | 286d5652 | Anthony Liguori | |
318 | 286d5652 | Anthony Liguori | return f;
|
319 | 286d5652 | Anthony Liguori | } |
320 | 286d5652 | Anthony Liguori | |
321 | 10b468bd | Aneesh Kumar K.V | static int v9fs_xattr_fid_clunk(V9fsState *s, V9fsFidState *fidp) |
322 | 10b468bd | Aneesh Kumar K.V | { |
323 | 10b468bd | Aneesh Kumar K.V | int retval = 0; |
324 | 10b468bd | Aneesh Kumar K.V | |
325 | 10b468bd | Aneesh Kumar K.V | if (fidp->fs.xattr.copied_len == -1) { |
326 | 10b468bd | Aneesh Kumar K.V | /* getxattr/listxattr fid */
|
327 | 10b468bd | Aneesh Kumar K.V | goto free_value;
|
328 | 10b468bd | Aneesh Kumar K.V | } |
329 | 10b468bd | Aneesh Kumar K.V | /*
|
330 | 10b468bd | Aneesh Kumar K.V | * if this is fid for setxattr. clunk should
|
331 | 10b468bd | Aneesh Kumar K.V | * result in setxattr localcall
|
332 | 10b468bd | Aneesh Kumar K.V | */
|
333 | 10b468bd | Aneesh Kumar K.V | if (fidp->fs.xattr.len != fidp->fs.xattr.copied_len) {
|
334 | 10b468bd | Aneesh Kumar K.V | /* clunk after partial write */
|
335 | 10b468bd | Aneesh Kumar K.V | retval = -EINVAL; |
336 | 10b468bd | Aneesh Kumar K.V | goto free_out;
|
337 | 10b468bd | Aneesh Kumar K.V | } |
338 | 9ed3ef26 | Aneesh Kumar K.V | if (fidp->fs.xattr.len) {
|
339 | c540ee51 | Aneesh Kumar K.V | retval = v9fs_co_lsetxattr(s, &fidp->path, &fidp->fs.xattr.name, |
340 | 9ed3ef26 | Aneesh Kumar K.V | fidp->fs.xattr.value, |
341 | 9ed3ef26 | Aneesh Kumar K.V | fidp->fs.xattr.len, |
342 | 9ed3ef26 | Aneesh Kumar K.V | fidp->fs.xattr.flags); |
343 | 9ed3ef26 | Aneesh Kumar K.V | } else {
|
344 | c540ee51 | Aneesh Kumar K.V | retval = v9fs_co_lremovexattr(s, &fidp->path, &fidp->fs.xattr.name); |
345 | 9ed3ef26 | Aneesh Kumar K.V | } |
346 | 10b468bd | Aneesh Kumar K.V | free_out:
|
347 | 10b468bd | Aneesh Kumar K.V | v9fs_string_free(&fidp->fs.xattr.name); |
348 | 10b468bd | Aneesh Kumar K.V | free_value:
|
349 | 10b468bd | Aneesh Kumar K.V | if (fidp->fs.xattr.value) {
|
350 | 7267c094 | Anthony Liguori | g_free(fidp->fs.xattr.value); |
351 | 10b468bd | Aneesh Kumar K.V | } |
352 | 10b468bd | Aneesh Kumar K.V | return retval;
|
353 | 10b468bd | Aneesh Kumar K.V | } |
354 | 10b468bd | Aneesh Kumar K.V | |
355 | 84dfb926 | Aneesh Kumar K.V | static int free_fid(V9fsState *s, V9fsFidState *fidp) |
356 | 286d5652 | Anthony Liguori | { |
357 | 10b468bd | Aneesh Kumar K.V | int retval = 0; |
358 | 84dfb926 | Aneesh Kumar K.V | |
359 | 84dfb926 | Aneesh Kumar K.V | if (fidp->fid_type == P9_FID_FILE) {
|
360 | 7a462745 | Aneesh Kumar K.V | /* If we reclaimed the fd no need to close */
|
361 | 7a462745 | Aneesh Kumar K.V | if (fidp->fs.fd != -1) { |
362 | 7a462745 | Aneesh Kumar K.V | retval = v9fs_co_close(s, fidp->fs.fd); |
363 | 7a462745 | Aneesh Kumar K.V | } |
364 | 84dfb926 | Aneesh Kumar K.V | } else if (fidp->fid_type == P9_FID_DIR) { |
365 | 95f65511 | Aneesh Kumar K.V | if (fidp->fs.dir != NULL) { |
366 | 95f65511 | Aneesh Kumar K.V | retval = v9fs_co_closedir(s, fidp->fs.dir); |
367 | 95f65511 | Aneesh Kumar K.V | } |
368 | 84dfb926 | Aneesh Kumar K.V | } else if (fidp->fid_type == P9_FID_XATTR) { |
369 | 84dfb926 | Aneesh Kumar K.V | retval = v9fs_xattr_fid_clunk(s, fidp); |
370 | 84dfb926 | Aneesh Kumar K.V | } |
371 | 84dfb926 | Aneesh Kumar K.V | v9fs_string_free(&fidp->path); |
372 | 84dfb926 | Aneesh Kumar K.V | g_free(fidp); |
373 | 84dfb926 | Aneesh Kumar K.V | return retval;
|
374 | 84dfb926 | Aneesh Kumar K.V | } |
375 | 84dfb926 | Aneesh Kumar K.V | |
376 | 84dfb926 | Aneesh Kumar K.V | static void put_fid(V9fsState *s, V9fsFidState *fidp) |
377 | 84dfb926 | Aneesh Kumar K.V | { |
378 | 84dfb926 | Aneesh Kumar K.V | BUG_ON(!fidp->ref); |
379 | 84dfb926 | Aneesh Kumar K.V | fidp->ref--; |
380 | 7a462745 | Aneesh Kumar K.V | /*
|
381 | 7a462745 | Aneesh Kumar K.V | * Don't free the fid if it is in reclaim list
|
382 | 7a462745 | Aneesh Kumar K.V | */
|
383 | 84dfb926 | Aneesh Kumar K.V | if (!fidp->ref && fidp->clunked) {
|
384 | 84dfb926 | Aneesh Kumar K.V | free_fid(s, fidp); |
385 | 84dfb926 | Aneesh Kumar K.V | } |
386 | 84dfb926 | Aneesh Kumar K.V | } |
387 | 84dfb926 | Aneesh Kumar K.V | |
388 | 84dfb926 | Aneesh Kumar K.V | static int clunk_fid(V9fsState *s, int32_t fid) |
389 | 84dfb926 | Aneesh Kumar K.V | { |
390 | 286d5652 | Anthony Liguori | V9fsFidState **fidpp, *fidp; |
391 | 286d5652 | Anthony Liguori | |
392 | 286d5652 | Anthony Liguori | for (fidpp = &s->fid_list; *fidpp; fidpp = &(*fidpp)->next) {
|
393 | 286d5652 | Anthony Liguori | if ((*fidpp)->fid == fid) {
|
394 | 286d5652 | Anthony Liguori | break;
|
395 | 286d5652 | Anthony Liguori | } |
396 | 286d5652 | Anthony Liguori | } |
397 | 286d5652 | Anthony Liguori | |
398 | 286d5652 | Anthony Liguori | if (*fidpp == NULL) { |
399 | 286d5652 | Anthony Liguori | return -ENOENT;
|
400 | 286d5652 | Anthony Liguori | } |
401 | 286d5652 | Anthony Liguori | fidp = *fidpp; |
402 | 286d5652 | Anthony Liguori | *fidpp = fidp->next; |
403 | 84dfb926 | Aneesh Kumar K.V | fidp->clunked = 1;
|
404 | 84dfb926 | Aneesh Kumar K.V | return 0; |
405 | 286d5652 | Anthony Liguori | } |
406 | 286d5652 | Anthony Liguori | |
407 | 7a462745 | Aneesh Kumar K.V | void v9fs_reclaim_fd(V9fsState *s)
|
408 | 7a462745 | Aneesh Kumar K.V | { |
409 | 7a462745 | Aneesh Kumar K.V | int reclaim_count = 0; |
410 | 7a462745 | Aneesh Kumar K.V | V9fsFidState *f, *reclaim_list = NULL;
|
411 | 7a462745 | Aneesh Kumar K.V | |
412 | 7a462745 | Aneesh Kumar K.V | for (f = s->fid_list; f; f = f->next) {
|
413 | 7a462745 | Aneesh Kumar K.V | /*
|
414 | 7a462745 | Aneesh Kumar K.V | * Unlink fids cannot be reclaimed. Check
|
415 | 7a462745 | Aneesh Kumar K.V | * for them and skip them. Also skip fids
|
416 | 7a462745 | Aneesh Kumar K.V | * currently being operated on.
|
417 | 7a462745 | Aneesh Kumar K.V | */
|
418 | 7a462745 | Aneesh Kumar K.V | if (f->ref || f->flags & FID_NON_RECLAIMABLE) {
|
419 | 7a462745 | Aneesh Kumar K.V | continue;
|
420 | 7a462745 | Aneesh Kumar K.V | } |
421 | 7a462745 | Aneesh Kumar K.V | /*
|
422 | 7a462745 | Aneesh Kumar K.V | * if it is a recently referenced fid
|
423 | 7a462745 | Aneesh Kumar K.V | * we leave the fid untouched and clear the
|
424 | 7a462745 | Aneesh Kumar K.V | * reference bit. We come back to it later
|
425 | 7a462745 | Aneesh Kumar K.V | * in the next iteration. (a simple LRU without
|
426 | 7a462745 | Aneesh Kumar K.V | * moving list elements around)
|
427 | 7a462745 | Aneesh Kumar K.V | */
|
428 | 7a462745 | Aneesh Kumar K.V | if (f->flags & FID_REFERENCED) {
|
429 | 7a462745 | Aneesh Kumar K.V | f->flags &= ~FID_REFERENCED; |
430 | 7a462745 | Aneesh Kumar K.V | continue;
|
431 | 7a462745 | Aneesh Kumar K.V | } |
432 | 7a462745 | Aneesh Kumar K.V | /*
|
433 | 7a462745 | Aneesh Kumar K.V | * Add fids to reclaim list.
|
434 | 7a462745 | Aneesh Kumar K.V | */
|
435 | 7a462745 | Aneesh Kumar K.V | if (f->fid_type == P9_FID_FILE) {
|
436 | 7a462745 | Aneesh Kumar K.V | if (f->fs.fd != -1) { |
437 | 7a462745 | Aneesh Kumar K.V | /*
|
438 | 7a462745 | Aneesh Kumar K.V | * Up the reference count so that
|
439 | 7a462745 | Aneesh Kumar K.V | * a clunk request won't free this fid
|
440 | 7a462745 | Aneesh Kumar K.V | */
|
441 | 7a462745 | Aneesh Kumar K.V | f->ref++; |
442 | 7a462745 | Aneesh Kumar K.V | f->rclm_lst = reclaim_list; |
443 | 7a462745 | Aneesh Kumar K.V | reclaim_list = f; |
444 | 7a462745 | Aneesh Kumar K.V | f->fs_reclaim.fd = f->fs.fd; |
445 | 7a462745 | Aneesh Kumar K.V | f->fs.fd = -1;
|
446 | 7a462745 | Aneesh Kumar K.V | reclaim_count++; |
447 | 7a462745 | Aneesh Kumar K.V | } |
448 | 95f65511 | Aneesh Kumar K.V | } else if (f->fid_type == P9_FID_DIR) { |
449 | 95f65511 | Aneesh Kumar K.V | if (f->fs.dir != NULL) { |
450 | 95f65511 | Aneesh Kumar K.V | /*
|
451 | 95f65511 | Aneesh Kumar K.V | * Up the reference count so that
|
452 | 95f65511 | Aneesh Kumar K.V | * a clunk request won't free this fid
|
453 | 95f65511 | Aneesh Kumar K.V | */
|
454 | 95f65511 | Aneesh Kumar K.V | f->ref++; |
455 | 95f65511 | Aneesh Kumar K.V | f->rclm_lst = reclaim_list; |
456 | 95f65511 | Aneesh Kumar K.V | reclaim_list = f; |
457 | 95f65511 | Aneesh Kumar K.V | f->fs_reclaim.dir = f->fs.dir; |
458 | 95f65511 | Aneesh Kumar K.V | f->fs.dir = NULL;
|
459 | 95f65511 | Aneesh Kumar K.V | reclaim_count++; |
460 | 95f65511 | Aneesh Kumar K.V | } |
461 | 7a462745 | Aneesh Kumar K.V | } |
462 | 7a462745 | Aneesh Kumar K.V | if (reclaim_count >= open_fd_rc) {
|
463 | 7a462745 | Aneesh Kumar K.V | break;
|
464 | 7a462745 | Aneesh Kumar K.V | } |
465 | 7a462745 | Aneesh Kumar K.V | } |
466 | 7a462745 | Aneesh Kumar K.V | /*
|
467 | 7a462745 | Aneesh Kumar K.V | * Now close the fid in reclaim list. Free them if they
|
468 | 7a462745 | Aneesh Kumar K.V | * are already clunked.
|
469 | 7a462745 | Aneesh Kumar K.V | */
|
470 | 7a462745 | Aneesh Kumar K.V | while (reclaim_list) {
|
471 | 7a462745 | Aneesh Kumar K.V | f = reclaim_list; |
472 | 7a462745 | Aneesh Kumar K.V | reclaim_list = f->rclm_lst; |
473 | 7a462745 | Aneesh Kumar K.V | if (f->fid_type == P9_FID_FILE) {
|
474 | 7a462745 | Aneesh Kumar K.V | v9fs_co_close(s, f->fs_reclaim.fd); |
475 | 95f65511 | Aneesh Kumar K.V | } else if (f->fid_type == P9_FID_DIR) { |
476 | 95f65511 | Aneesh Kumar K.V | v9fs_co_closedir(s, f->fs_reclaim.dir); |
477 | 7a462745 | Aneesh Kumar K.V | } |
478 | 7a462745 | Aneesh Kumar K.V | f->rclm_lst = NULL;
|
479 | 7a462745 | Aneesh Kumar K.V | /*
|
480 | 7a462745 | Aneesh Kumar K.V | * Now drop the fid reference, free it
|
481 | 7a462745 | Aneesh Kumar K.V | * if clunked.
|
482 | 7a462745 | Aneesh Kumar K.V | */
|
483 | 7a462745 | Aneesh Kumar K.V | put_fid(s, f); |
484 | 7a462745 | Aneesh Kumar K.V | } |
485 | 7a462745 | Aneesh Kumar K.V | } |
486 | 7a462745 | Aneesh Kumar K.V | |
487 | 7a462745 | Aneesh Kumar K.V | static int v9fs_mark_fids_unreclaim(V9fsState *s, V9fsString *str) |
488 | 7a462745 | Aneesh Kumar K.V | { |
489 | 7a462745 | Aneesh Kumar K.V | int err;
|
490 | 7a462745 | Aneesh Kumar K.V | V9fsFidState *fidp, head_fid; |
491 | 7a462745 | Aneesh Kumar K.V | |
492 | 7a462745 | Aneesh Kumar K.V | head_fid.next = s->fid_list; |
493 | 7a462745 | Aneesh Kumar K.V | for (fidp = s->fid_list; fidp; fidp = fidp->next) {
|
494 | 7a462745 | Aneesh Kumar K.V | if (!strcmp(fidp->path.data, str->data)) {
|
495 | 7a462745 | Aneesh Kumar K.V | /* Mark the fid non reclaimable. */
|
496 | 7a462745 | Aneesh Kumar K.V | fidp->flags |= FID_NON_RECLAIMABLE; |
497 | b9cb88b0 | Aneesh Kumar K.V | |
498 | b9cb88b0 | Aneesh Kumar K.V | /* reopen the file/dir if already closed */
|
499 | b9cb88b0 | Aneesh Kumar K.V | err = v9fs_reopen_fid(s, fidp); |
500 | b9cb88b0 | Aneesh Kumar K.V | if (err < 0) { |
501 | b9cb88b0 | Aneesh Kumar K.V | return -1; |
502 | b9cb88b0 | Aneesh Kumar K.V | } |
503 | b9cb88b0 | Aneesh Kumar K.V | /*
|
504 | b9cb88b0 | Aneesh Kumar K.V | * Go back to head of fid list because
|
505 | b9cb88b0 | Aneesh Kumar K.V | * the list could have got updated when
|
506 | b9cb88b0 | Aneesh Kumar K.V | * switched to the worker thread
|
507 | b9cb88b0 | Aneesh Kumar K.V | */
|
508 | b9cb88b0 | Aneesh Kumar K.V | if (err == 0) { |
509 | 7a462745 | Aneesh Kumar K.V | fidp = &head_fid; |
510 | 7a462745 | Aneesh Kumar K.V | } |
511 | 7a462745 | Aneesh Kumar K.V | } |
512 | 7a462745 | Aneesh Kumar K.V | } |
513 | 7a462745 | Aneesh Kumar K.V | return 0; |
514 | 7a462745 | Aneesh Kumar K.V | } |
515 | 7a462745 | Aneesh Kumar K.V | |
516 | 286d5652 | Anthony Liguori | #define P9_QID_TYPE_DIR 0x80 |
517 | 286d5652 | Anthony Liguori | #define P9_QID_TYPE_SYMLINK 0x02 |
518 | 286d5652 | Anthony Liguori | |
519 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_DIR 0x80000000 |
520 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_APPEND 0x40000000 |
521 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_EXCL 0x20000000 |
522 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_MOUNT 0x10000000 |
523 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_AUTH 0x08000000 |
524 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_TMP 0x04000000 |
525 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SYMLINK 0x02000000 |
526 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_LINK 0x01000000 |
527 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_DEVICE 0x00800000 |
528 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_NAMED_PIPE 0x00200000 |
529 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SOCKET 0x00100000 |
530 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETUID 0x00080000 |
531 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETGID 0x00040000 |
532 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETVTX 0x00010000 |
533 | 286d5652 | Anthony Liguori | |
534 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_TYPE_BITS (P9_STAT_MODE_DIR | \
|
535 | 286d5652 | Anthony Liguori | P9_STAT_MODE_SYMLINK | \ |
536 | 286d5652 | Anthony Liguori | P9_STAT_MODE_LINK | \ |
537 | 286d5652 | Anthony Liguori | P9_STAT_MODE_DEVICE | \ |
538 | 286d5652 | Anthony Liguori | P9_STAT_MODE_NAMED_PIPE | \ |
539 | 286d5652 | Anthony Liguori | P9_STAT_MODE_SOCKET) |
540 | 286d5652 | Anthony Liguori | |
541 | 286d5652 | Anthony Liguori | /* This is the algorithm from ufs in spfs */
|
542 | 286d5652 | Anthony Liguori | static void stat_to_qid(const struct stat *stbuf, V9fsQID *qidp) |
543 | 286d5652 | Anthony Liguori | { |
544 | 286d5652 | Anthony Liguori | size_t size; |
545 | 286d5652 | Anthony Liguori | |
546 | 25427ec1 | Aneesh Kumar K.V | memset(&qidp->path, 0, sizeof(qidp->path)); |
547 | 286d5652 | Anthony Liguori | size = MIN(sizeof(stbuf->st_ino), sizeof(qidp->path)); |
548 | 286d5652 | Anthony Liguori | memcpy(&qidp->path, &stbuf->st_ino, size); |
549 | 286d5652 | Anthony Liguori | qidp->version = stbuf->st_mtime ^ (stbuf->st_size << 8);
|
550 | 286d5652 | Anthony Liguori | qidp->type = 0;
|
551 | 286d5652 | Anthony Liguori | if (S_ISDIR(stbuf->st_mode)) {
|
552 | 286d5652 | Anthony Liguori | qidp->type |= P9_QID_TYPE_DIR; |
553 | 286d5652 | Anthony Liguori | } |
554 | 286d5652 | Anthony Liguori | if (S_ISLNK(stbuf->st_mode)) {
|
555 | 286d5652 | Anthony Liguori | qidp->type |= P9_QID_TYPE_SYMLINK; |
556 | 286d5652 | Anthony Liguori | } |
557 | 286d5652 | Anthony Liguori | } |
558 | 286d5652 | Anthony Liguori | |
559 | 286d5652 | Anthony Liguori | static int fid_to_qid(V9fsState *s, V9fsFidState *fidp, V9fsQID *qidp) |
560 | 286d5652 | Anthony Liguori | { |
561 | 286d5652 | Anthony Liguori | struct stat stbuf;
|
562 | 286d5652 | Anthony Liguori | int err;
|
563 | 286d5652 | Anthony Liguori | |
564 | 8c158561 | Aneesh Kumar K.V | err = v9fs_co_lstat(s, &fidp->path, &stbuf); |
565 | 8c158561 | Aneesh Kumar K.V | if (err < 0) { |
566 | 286d5652 | Anthony Liguori | return err;
|
567 | 286d5652 | Anthony Liguori | } |
568 | 286d5652 | Anthony Liguori | stat_to_qid(&stbuf, qidp); |
569 | 286d5652 | Anthony Liguori | return 0; |
570 | 286d5652 | Anthony Liguori | } |
571 | 286d5652 | Anthony Liguori | |
572 | 9f107513 | Anthony Liguori | static V9fsPDU *alloc_pdu(V9fsState *s)
|
573 | 9f107513 | Anthony Liguori | { |
574 | 9f107513 | Anthony Liguori | V9fsPDU *pdu = NULL;
|
575 | 9f107513 | Anthony Liguori | |
576 | 9f107513 | Anthony Liguori | if (!QLIST_EMPTY(&s->free_list)) {
|
577 | 9f107513 | Anthony Liguori | pdu = QLIST_FIRST(&s->free_list); |
578 | 9f107513 | Anthony Liguori | QLIST_REMOVE(pdu, next); |
579 | 9f107513 | Anthony Liguori | } |
580 | 9f107513 | Anthony Liguori | return pdu;
|
581 | 9f107513 | Anthony Liguori | } |
582 | 9f107513 | Anthony Liguori | |
583 | 9f107513 | Anthony Liguori | static void free_pdu(V9fsState *s, V9fsPDU *pdu) |
584 | 9f107513 | Anthony Liguori | { |
585 | 9f107513 | Anthony Liguori | if (pdu) {
|
586 | 39792515 | Aneesh Kumar K.V | if (debug_9p_pdu) {
|
587 | 39792515 | Aneesh Kumar K.V | pprint_pdu(pdu); |
588 | 39792515 | Aneesh Kumar K.V | } |
589 | 39792515 | Aneesh Kumar K.V | QLIST_INSERT_HEAD(&s->free_list, pdu, next); |
590 | 9f107513 | Anthony Liguori | } |
591 | 9f107513 | Anthony Liguori | } |
592 | 9f107513 | Anthony Liguori | |
593 | 9f107513 | Anthony Liguori | size_t pdu_packunpack(void *addr, struct iovec *sg, int sg_count, |
594 | 9f107513 | Anthony Liguori | size_t offset, size_t size, int pack)
|
595 | 9f107513 | Anthony Liguori | { |
596 | 9f107513 | Anthony Liguori | int i = 0; |
597 | 9f107513 | Anthony Liguori | size_t copied = 0;
|
598 | 9f107513 | Anthony Liguori | |
599 | 9f107513 | Anthony Liguori | for (i = 0; size && i < sg_count; i++) { |
600 | 9f107513 | Anthony Liguori | size_t len; |
601 | 9f107513 | Anthony Liguori | if (offset >= sg[i].iov_len) {
|
602 | 9f107513 | Anthony Liguori | /* skip this sg */
|
603 | 9f107513 | Anthony Liguori | offset -= sg[i].iov_len; |
604 | 9f107513 | Anthony Liguori | continue;
|
605 | 9f107513 | Anthony Liguori | } else {
|
606 | 9f107513 | Anthony Liguori | len = MIN(sg[i].iov_len - offset, size); |
607 | 9f107513 | Anthony Liguori | if (pack) {
|
608 | 9f107513 | Anthony Liguori | memcpy(sg[i].iov_base + offset, addr, len); |
609 | 9f107513 | Anthony Liguori | } else {
|
610 | 9f107513 | Anthony Liguori | memcpy(addr, sg[i].iov_base + offset, len); |
611 | 9f107513 | Anthony Liguori | } |
612 | 9f107513 | Anthony Liguori | size -= len; |
613 | 9f107513 | Anthony Liguori | copied += len; |
614 | 9f107513 | Anthony Liguori | addr += len; |
615 | 9f107513 | Anthony Liguori | if (size) {
|
616 | 9f107513 | Anthony Liguori | offset = 0;
|
617 | 9f107513 | Anthony Liguori | continue;
|
618 | 9f107513 | Anthony Liguori | } |
619 | 9f107513 | Anthony Liguori | } |
620 | 9f107513 | Anthony Liguori | } |
621 | 9f107513 | Anthony Liguori | |
622 | 9f107513 | Anthony Liguori | return copied;
|
623 | 9f107513 | Anthony Liguori | } |
624 | 9f107513 | Anthony Liguori | |
625 | 405a549a | Anthony Liguori | static size_t pdu_unpack(void *dst, V9fsPDU *pdu, size_t offset, size_t size) |
626 | 405a549a | Anthony Liguori | { |
627 | 405a549a | Anthony Liguori | return pdu_packunpack(dst, pdu->elem.out_sg, pdu->elem.out_num,
|
628 | 405a549a | Anthony Liguori | offset, size, 0);
|
629 | 405a549a | Anthony Liguori | } |
630 | 405a549a | Anthony Liguori | |
631 | 405a549a | Anthony Liguori | static size_t pdu_pack(V9fsPDU *pdu, size_t offset, const void *src, |
632 | 405a549a | Anthony Liguori | size_t size) |
633 | 405a549a | Anthony Liguori | { |
634 | 405a549a | Anthony Liguori | return pdu_packunpack((void *)src, pdu->elem.in_sg, pdu->elem.in_num, |
635 | 405a549a | Anthony Liguori | offset, size, 1);
|
636 | 405a549a | Anthony Liguori | } |
637 | 405a549a | Anthony Liguori | |
638 | 405a549a | Anthony Liguori | static int pdu_copy_sg(V9fsPDU *pdu, size_t offset, int rx, struct iovec *sg) |
639 | 405a549a | Anthony Liguori | { |
640 | 405a549a | Anthony Liguori | size_t pos = 0;
|
641 | 405a549a | Anthony Liguori | int i, j;
|
642 | 405a549a | Anthony Liguori | struct iovec *src_sg;
|
643 | 405a549a | Anthony Liguori | unsigned int num; |
644 | 405a549a | Anthony Liguori | |
645 | 405a549a | Anthony Liguori | if (rx) {
|
646 | 405a549a | Anthony Liguori | src_sg = pdu->elem.in_sg; |
647 | 405a549a | Anthony Liguori | num = pdu->elem.in_num; |
648 | 405a549a | Anthony Liguori | } else {
|
649 | 405a549a | Anthony Liguori | src_sg = pdu->elem.out_sg; |
650 | 405a549a | Anthony Liguori | num = pdu->elem.out_num; |
651 | 405a549a | Anthony Liguori | } |
652 | 405a549a | Anthony Liguori | |
653 | 405a549a | Anthony Liguori | j = 0;
|
654 | 405a549a | Anthony Liguori | for (i = 0; i < num; i++) { |
655 | 405a549a | Anthony Liguori | if (offset <= pos) {
|
656 | 405a549a | Anthony Liguori | sg[j].iov_base = src_sg[i].iov_base; |
657 | 405a549a | Anthony Liguori | sg[j].iov_len = src_sg[i].iov_len; |
658 | 405a549a | Anthony Liguori | j++; |
659 | 405a549a | Anthony Liguori | } else if (offset < (src_sg[i].iov_len + pos)) { |
660 | 405a549a | Anthony Liguori | sg[j].iov_base = src_sg[i].iov_base; |
661 | 405a549a | Anthony Liguori | sg[j].iov_len = src_sg[i].iov_len; |
662 | 405a549a | Anthony Liguori | sg[j].iov_base += (offset - pos); |
663 | 405a549a | Anthony Liguori | sg[j].iov_len -= (offset - pos); |
664 | 405a549a | Anthony Liguori | j++; |
665 | 405a549a | Anthony Liguori | } |
666 | 405a549a | Anthony Liguori | pos += src_sg[i].iov_len; |
667 | 405a549a | Anthony Liguori | } |
668 | 405a549a | Anthony Liguori | |
669 | 405a549a | Anthony Liguori | return j;
|
670 | 405a549a | Anthony Liguori | } |
671 | 405a549a | Anthony Liguori | |
672 | 405a549a | Anthony Liguori | static size_t pdu_unmarshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) |
673 | 405a549a | Anthony Liguori | { |
674 | 405a549a | Anthony Liguori | size_t old_offset = offset; |
675 | 405a549a | Anthony Liguori | va_list ap; |
676 | 405a549a | Anthony Liguori | int i;
|
677 | 405a549a | Anthony Liguori | |
678 | 405a549a | Anthony Liguori | va_start(ap, fmt); |
679 | 405a549a | Anthony Liguori | for (i = 0; fmt[i]; i++) { |
680 | 405a549a | Anthony Liguori | switch (fmt[i]) {
|
681 | 405a549a | Anthony Liguori | case 'b': { |
682 | 405a549a | Anthony Liguori | uint8_t *valp = va_arg(ap, uint8_t *); |
683 | 405a549a | Anthony Liguori | offset += pdu_unpack(valp, pdu, offset, sizeof(*valp));
|
684 | 405a549a | Anthony Liguori | break;
|
685 | 405a549a | Anthony Liguori | } |
686 | 405a549a | Anthony Liguori | case 'w': { |
687 | 405a549a | Anthony Liguori | uint16_t val, *valp; |
688 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint16_t *); |
689 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
690 | 4e37bfc1 | Alexey Kardashevskiy | *valp = le16_to_cpu(val); |
691 | 405a549a | Anthony Liguori | break;
|
692 | 405a549a | Anthony Liguori | } |
693 | 405a549a | Anthony Liguori | case 'd': { |
694 | 405a549a | Anthony Liguori | uint32_t val, *valp; |
695 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint32_t *); |
696 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
697 | 4e37bfc1 | Alexey Kardashevskiy | *valp = le32_to_cpu(val); |
698 | 405a549a | Anthony Liguori | break;
|
699 | 405a549a | Anthony Liguori | } |
700 | 405a549a | Anthony Liguori | case 'q': { |
701 | 405a549a | Anthony Liguori | uint64_t val, *valp; |
702 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint64_t *); |
703 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
704 | 4e37bfc1 | Alexey Kardashevskiy | *valp = le64_to_cpu(val); |
705 | 405a549a | Anthony Liguori | break;
|
706 | 405a549a | Anthony Liguori | } |
707 | 405a549a | Anthony Liguori | case 'v': { |
708 | 405a549a | Anthony Liguori | struct iovec *iov = va_arg(ap, struct iovec *); |
709 | 405a549a | Anthony Liguori | int *iovcnt = va_arg(ap, int *); |
710 | 405a549a | Anthony Liguori | *iovcnt = pdu_copy_sg(pdu, offset, 0, iov);
|
711 | 405a549a | Anthony Liguori | break;
|
712 | 405a549a | Anthony Liguori | } |
713 | 405a549a | Anthony Liguori | case 's': { |
714 | 405a549a | Anthony Liguori | V9fsString *str = va_arg(ap, V9fsString *); |
715 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "w", &str->size);
|
716 | 405a549a | Anthony Liguori | /* FIXME: sanity check str->size */
|
717 | 7267c094 | Anthony Liguori | str->data = g_malloc(str->size + 1);
|
718 | 405a549a | Anthony Liguori | offset += pdu_unpack(str->data, pdu, offset, str->size); |
719 | 405a549a | Anthony Liguori | str->data[str->size] = 0;
|
720 | 405a549a | Anthony Liguori | break;
|
721 | 405a549a | Anthony Liguori | } |
722 | 405a549a | Anthony Liguori | case 'Q': { |
723 | 405a549a | Anthony Liguori | V9fsQID *qidp = va_arg(ap, V9fsQID *); |
724 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "bdq",
|
725 | 405a549a | Anthony Liguori | &qidp->type, &qidp->version, &qidp->path); |
726 | 405a549a | Anthony Liguori | break;
|
727 | 405a549a | Anthony Liguori | } |
728 | 405a549a | Anthony Liguori | case 'S': { |
729 | 405a549a | Anthony Liguori | V9fsStat *statp = va_arg(ap, V9fsStat *); |
730 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "wwdQdddqsssssddd",
|
731 | 405a549a | Anthony Liguori | &statp->size, &statp->type, &statp->dev, |
732 | 405a549a | Anthony Liguori | &statp->qid, &statp->mode, &statp->atime, |
733 | 405a549a | Anthony Liguori | &statp->mtime, &statp->length, |
734 | 405a549a | Anthony Liguori | &statp->name, &statp->uid, &statp->gid, |
735 | 405a549a | Anthony Liguori | &statp->muid, &statp->extension, |
736 | 405a549a | Anthony Liguori | &statp->n_uid, &statp->n_gid, |
737 | 405a549a | Anthony Liguori | &statp->n_muid); |
738 | 405a549a | Anthony Liguori | break;
|
739 | 405a549a | Anthony Liguori | } |
740 | c79ce737 | Sripathi Kodi | case 'I': { |
741 | c79ce737 | Sripathi Kodi | V9fsIattr *iattr = va_arg(ap, V9fsIattr *); |
742 | c79ce737 | Sripathi Kodi | offset += pdu_unmarshal(pdu, offset, "ddddqqqqq",
|
743 | c79ce737 | Sripathi Kodi | &iattr->valid, &iattr->mode, |
744 | c79ce737 | Sripathi Kodi | &iattr->uid, &iattr->gid, &iattr->size, |
745 | c79ce737 | Sripathi Kodi | &iattr->atime_sec, &iattr->atime_nsec, |
746 | c79ce737 | Sripathi Kodi | &iattr->mtime_sec, &iattr->mtime_nsec); |
747 | c79ce737 | Sripathi Kodi | break;
|
748 | c79ce737 | Sripathi Kodi | } |
749 | 405a549a | Anthony Liguori | default:
|
750 | 405a549a | Anthony Liguori | break;
|
751 | 405a549a | Anthony Liguori | } |
752 | 405a549a | Anthony Liguori | } |
753 | 405a549a | Anthony Liguori | |
754 | 405a549a | Anthony Liguori | va_end(ap); |
755 | 405a549a | Anthony Liguori | |
756 | 405a549a | Anthony Liguori | return offset - old_offset;
|
757 | 405a549a | Anthony Liguori | } |
758 | 405a549a | Anthony Liguori | |
759 | 405a549a | Anthony Liguori | static size_t pdu_marshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) |
760 | 405a549a | Anthony Liguori | { |
761 | 405a549a | Anthony Liguori | size_t old_offset = offset; |
762 | 405a549a | Anthony Liguori | va_list ap; |
763 | 405a549a | Anthony Liguori | int i;
|
764 | 405a549a | Anthony Liguori | |
765 | 405a549a | Anthony Liguori | va_start(ap, fmt); |
766 | 405a549a | Anthony Liguori | for (i = 0; fmt[i]; i++) { |
767 | 405a549a | Anthony Liguori | switch (fmt[i]) {
|
768 | 405a549a | Anthony Liguori | case 'b': { |
769 | 405a549a | Anthony Liguori | uint8_t val = va_arg(ap, int);
|
770 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
771 | 405a549a | Anthony Liguori | break;
|
772 | 405a549a | Anthony Liguori | } |
773 | 405a549a | Anthony Liguori | case 'w': { |
774 | 405a549a | Anthony Liguori | uint16_t val; |
775 | 405a549a | Anthony Liguori | cpu_to_le16w(&val, va_arg(ap, int));
|
776 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
777 | 405a549a | Anthony Liguori | break;
|
778 | 405a549a | Anthony Liguori | } |
779 | 405a549a | Anthony Liguori | case 'd': { |
780 | 405a549a | Anthony Liguori | uint32_t val; |
781 | 405a549a | Anthony Liguori | cpu_to_le32w(&val, va_arg(ap, uint32_t)); |
782 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
783 | 405a549a | Anthony Liguori | break;
|
784 | 405a549a | Anthony Liguori | } |
785 | 405a549a | Anthony Liguori | case 'q': { |
786 | 405a549a | Anthony Liguori | uint64_t val; |
787 | 405a549a | Anthony Liguori | cpu_to_le64w(&val, va_arg(ap, uint64_t)); |
788 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
789 | 405a549a | Anthony Liguori | break;
|
790 | 405a549a | Anthony Liguori | } |
791 | 405a549a | Anthony Liguori | case 'v': { |
792 | 405a549a | Anthony Liguori | struct iovec *iov = va_arg(ap, struct iovec *); |
793 | 405a549a | Anthony Liguori | int *iovcnt = va_arg(ap, int *); |
794 | 405a549a | Anthony Liguori | *iovcnt = pdu_copy_sg(pdu, offset, 1, iov);
|
795 | 405a549a | Anthony Liguori | break;
|
796 | 405a549a | Anthony Liguori | } |
797 | 405a549a | Anthony Liguori | case 's': { |
798 | 405a549a | Anthony Liguori | V9fsString *str = va_arg(ap, V9fsString *); |
799 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "w", str->size);
|
800 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, str->data, str->size); |
801 | 405a549a | Anthony Liguori | break;
|
802 | 405a549a | Anthony Liguori | } |
803 | 405a549a | Anthony Liguori | case 'Q': { |
804 | 405a549a | Anthony Liguori | V9fsQID *qidp = va_arg(ap, V9fsQID *); |
805 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "bdq",
|
806 | 405a549a | Anthony Liguori | qidp->type, qidp->version, qidp->path); |
807 | 405a549a | Anthony Liguori | break;
|
808 | 405a549a | Anthony Liguori | } |
809 | 405a549a | Anthony Liguori | case 'S': { |
810 | 405a549a | Anthony Liguori | V9fsStat *statp = va_arg(ap, V9fsStat *); |
811 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "wwdQdddqsssssddd",
|
812 | 405a549a | Anthony Liguori | statp->size, statp->type, statp->dev, |
813 | 405a549a | Anthony Liguori | &statp->qid, statp->mode, statp->atime, |
814 | 405a549a | Anthony Liguori | statp->mtime, statp->length, &statp->name, |
815 | 405a549a | Anthony Liguori | &statp->uid, &statp->gid, &statp->muid, |
816 | 405a549a | Anthony Liguori | &statp->extension, statp->n_uid, |
817 | 405a549a | Anthony Liguori | statp->n_gid, statp->n_muid); |
818 | 405a549a | Anthony Liguori | break;
|
819 | 405a549a | Anthony Liguori | } |
820 | 00ede4c2 | Sripathi Kodi | case 'A': { |
821 | 00ede4c2 | Sripathi Kodi | V9fsStatDotl *statp = va_arg(ap, V9fsStatDotl *); |
822 | 00ede4c2 | Sripathi Kodi | offset += pdu_marshal(pdu, offset, "qQdddqqqqqqqqqqqqqqq",
|
823 | 00ede4c2 | Sripathi Kodi | statp->st_result_mask, |
824 | 00ede4c2 | Sripathi Kodi | &statp->qid, statp->st_mode, |
825 | 00ede4c2 | Sripathi Kodi | statp->st_uid, statp->st_gid, |
826 | 00ede4c2 | Sripathi Kodi | statp->st_nlink, statp->st_rdev, |
827 | 00ede4c2 | Sripathi Kodi | statp->st_size, statp->st_blksize, statp->st_blocks, |
828 | 00ede4c2 | Sripathi Kodi | statp->st_atime_sec, statp->st_atime_nsec, |
829 | 00ede4c2 | Sripathi Kodi | statp->st_mtime_sec, statp->st_mtime_nsec, |
830 | 00ede4c2 | Sripathi Kodi | statp->st_ctime_sec, statp->st_ctime_nsec, |
831 | 00ede4c2 | Sripathi Kodi | statp->st_btime_sec, statp->st_btime_nsec, |
832 | 00ede4c2 | Sripathi Kodi | statp->st_gen, statp->st_data_version); |
833 | 00ede4c2 | Sripathi Kodi | break;
|
834 | 00ede4c2 | Sripathi Kodi | } |
835 | 405a549a | Anthony Liguori | default:
|
836 | 405a549a | Anthony Liguori | break;
|
837 | 405a549a | Anthony Liguori | } |
838 | 405a549a | Anthony Liguori | } |
839 | 405a549a | Anthony Liguori | va_end(ap); |
840 | 405a549a | Anthony Liguori | |
841 | 405a549a | Anthony Liguori | return offset - old_offset;
|
842 | 405a549a | Anthony Liguori | } |
843 | 405a549a | Anthony Liguori | |
844 | 405a549a | Anthony Liguori | static void complete_pdu(V9fsState *s, V9fsPDU *pdu, ssize_t len) |
845 | 405a549a | Anthony Liguori | { |
846 | 405a549a | Anthony Liguori | int8_t id = pdu->id + 1; /* Response */ |
847 | 405a549a | Anthony Liguori | |
848 | 405a549a | Anthony Liguori | if (len < 0) { |
849 | 405a549a | Anthony Liguori | int err = -len;
|
850 | 8f4d1ca5 | Arun R Bharadwaj | len = 7;
|
851 | 405a549a | Anthony Liguori | |
852 | 8f4d1ca5 | Arun R Bharadwaj | if (s->proto_version != V9FS_PROTO_2000L) {
|
853 | 8f4d1ca5 | Arun R Bharadwaj | V9fsString str; |
854 | 8f4d1ca5 | Arun R Bharadwaj | |
855 | 8f4d1ca5 | Arun R Bharadwaj | str.data = strerror(err); |
856 | 8f4d1ca5 | Arun R Bharadwaj | str.size = strlen(str.data); |
857 | 8f4d1ca5 | Arun R Bharadwaj | |
858 | 8f4d1ca5 | Arun R Bharadwaj | len += pdu_marshal(pdu, len, "s", &str);
|
859 | 8f4d1ca5 | Arun R Bharadwaj | id = P9_RERROR; |
860 | 8f4d1ca5 | Arun R Bharadwaj | } |
861 | 405a549a | Anthony Liguori | |
862 | cf03eb2c | Arun R Bharadwaj | len += pdu_marshal(pdu, len, "d", err);
|
863 | 405a549a | Anthony Liguori | |
864 | 8f4d1ca5 | Arun R Bharadwaj | if (s->proto_version == V9FS_PROTO_2000L) {
|
865 | 8f4d1ca5 | Arun R Bharadwaj | id = P9_RLERROR; |
866 | 8f4d1ca5 | Arun R Bharadwaj | } |
867 | 405a549a | Anthony Liguori | } |
868 | 405a549a | Anthony Liguori | |
869 | 405a549a | Anthony Liguori | /* fill out the header */
|
870 | 405a549a | Anthony Liguori | pdu_marshal(pdu, 0, "dbw", (int32_t)len, id, pdu->tag); |
871 | 405a549a | Anthony Liguori | |
872 | 405a549a | Anthony Liguori | /* keep these in sync */
|
873 | 405a549a | Anthony Liguori | pdu->size = len; |
874 | 405a549a | Anthony Liguori | pdu->id = id; |
875 | 405a549a | Anthony Liguori | |
876 | 405a549a | Anthony Liguori | /* push onto queue and notify */
|
877 | 405a549a | Anthony Liguori | virtqueue_push(s->vq, &pdu->elem, len); |
878 | 405a549a | Anthony Liguori | |
879 | 405a549a | Anthony Liguori | /* FIXME: we should batch these completions */
|
880 | 405a549a | Anthony Liguori | virtio_notify(&s->vdev, s->vq); |
881 | 405a549a | Anthony Liguori | |
882 | 405a549a | Anthony Liguori | free_pdu(s, pdu); |
883 | 405a549a | Anthony Liguori | } |
884 | 405a549a | Anthony Liguori | |
885 | bb9e3216 | Anthony Liguori | static mode_t v9mode_to_mode(uint32_t mode, V9fsString *extension)
|
886 | bb9e3216 | Anthony Liguori | { |
887 | bb9e3216 | Anthony Liguori | mode_t ret; |
888 | bb9e3216 | Anthony Liguori | |
889 | bb9e3216 | Anthony Liguori | ret = mode & 0777;
|
890 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_DIR) {
|
891 | bb9e3216 | Anthony Liguori | ret |= S_IFDIR; |
892 | bb9e3216 | Anthony Liguori | } |
893 | bb9e3216 | Anthony Liguori | |
894 | cf03eb2c | Arun R Bharadwaj | if (mode & P9_STAT_MODE_SYMLINK) {
|
895 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFLNK; |
896 | cf03eb2c | Arun R Bharadwaj | } |
897 | cf03eb2c | Arun R Bharadwaj | if (mode & P9_STAT_MODE_SOCKET) {
|
898 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFSOCK; |
899 | cf03eb2c | Arun R Bharadwaj | } |
900 | cf03eb2c | Arun R Bharadwaj | if (mode & P9_STAT_MODE_NAMED_PIPE) {
|
901 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFIFO; |
902 | cf03eb2c | Arun R Bharadwaj | } |
903 | cf03eb2c | Arun R Bharadwaj | if (mode & P9_STAT_MODE_DEVICE) {
|
904 | cf03eb2c | Arun R Bharadwaj | if (extension && extension->data[0] == 'c') { |
905 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFCHR; |
906 | cf03eb2c | Arun R Bharadwaj | } else {
|
907 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFBLK; |
908 | bb9e3216 | Anthony Liguori | } |
909 | bb9e3216 | Anthony Liguori | } |
910 | bb9e3216 | Anthony Liguori | |
911 | bb9e3216 | Anthony Liguori | if (!(ret&~0777)) { |
912 | bb9e3216 | Anthony Liguori | ret |= S_IFREG; |
913 | bb9e3216 | Anthony Liguori | } |
914 | bb9e3216 | Anthony Liguori | |
915 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETUID) {
|
916 | bb9e3216 | Anthony Liguori | ret |= S_ISUID; |
917 | bb9e3216 | Anthony Liguori | } |
918 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETGID) {
|
919 | bb9e3216 | Anthony Liguori | ret |= S_ISGID; |
920 | bb9e3216 | Anthony Liguori | } |
921 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETVTX) {
|
922 | bb9e3216 | Anthony Liguori | ret |= S_ISVTX; |
923 | bb9e3216 | Anthony Liguori | } |
924 | bb9e3216 | Anthony Liguori | |
925 | bb9e3216 | Anthony Liguori | return ret;
|
926 | bb9e3216 | Anthony Liguori | } |
927 | bb9e3216 | Anthony Liguori | |
928 | bb9e3216 | Anthony Liguori | static int donttouch_stat(V9fsStat *stat) |
929 | bb9e3216 | Anthony Liguori | { |
930 | bb9e3216 | Anthony Liguori | if (stat->type == -1 && |
931 | bb9e3216 | Anthony Liguori | stat->dev == -1 &&
|
932 | bb9e3216 | Anthony Liguori | stat->qid.type == -1 &&
|
933 | bb9e3216 | Anthony Liguori | stat->qid.version == -1 &&
|
934 | bb9e3216 | Anthony Liguori | stat->qid.path == -1 &&
|
935 | bb9e3216 | Anthony Liguori | stat->mode == -1 &&
|
936 | bb9e3216 | Anthony Liguori | stat->atime == -1 &&
|
937 | bb9e3216 | Anthony Liguori | stat->mtime == -1 &&
|
938 | bb9e3216 | Anthony Liguori | stat->length == -1 &&
|
939 | bb9e3216 | Anthony Liguori | !stat->name.size && |
940 | bb9e3216 | Anthony Liguori | !stat->uid.size && |
941 | bb9e3216 | Anthony Liguori | !stat->gid.size && |
942 | bb9e3216 | Anthony Liguori | !stat->muid.size && |
943 | bb9e3216 | Anthony Liguori | stat->n_uid == -1 &&
|
944 | bb9e3216 | Anthony Liguori | stat->n_gid == -1 &&
|
945 | bb9e3216 | Anthony Liguori | stat->n_muid == -1) {
|
946 | bb9e3216 | Anthony Liguori | return 1; |
947 | bb9e3216 | Anthony Liguori | } |
948 | bb9e3216 | Anthony Liguori | |
949 | bb9e3216 | Anthony Liguori | return 0; |
950 | bb9e3216 | Anthony Liguori | } |
951 | bb9e3216 | Anthony Liguori | |
952 | bb9e3216 | Anthony Liguori | static void v9fs_stat_free(V9fsStat *stat) |
953 | bb9e3216 | Anthony Liguori | { |
954 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->name); |
955 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->uid); |
956 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->gid); |
957 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->muid); |
958 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->extension); |
959 | bb9e3216 | Anthony Liguori | } |
960 | bb9e3216 | Anthony Liguori | |
961 | bb9e3216 | Anthony Liguori | static uint32_t stat_to_v9mode(const struct stat *stbuf) |
962 | bb9e3216 | Anthony Liguori | { |
963 | bb9e3216 | Anthony Liguori | uint32_t mode; |
964 | bb9e3216 | Anthony Liguori | |
965 | bb9e3216 | Anthony Liguori | mode = stbuf->st_mode & 0777;
|
966 | bb9e3216 | Anthony Liguori | if (S_ISDIR(stbuf->st_mode)) {
|
967 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_DIR; |
968 | bb9e3216 | Anthony Liguori | } |
969 | bb9e3216 | Anthony Liguori | |
970 | cf03eb2c | Arun R Bharadwaj | if (S_ISLNK(stbuf->st_mode)) {
|
971 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SYMLINK; |
972 | cf03eb2c | Arun R Bharadwaj | } |
973 | bb9e3216 | Anthony Liguori | |
974 | cf03eb2c | Arun R Bharadwaj | if (S_ISSOCK(stbuf->st_mode)) {
|
975 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SOCKET; |
976 | cf03eb2c | Arun R Bharadwaj | } |
977 | bb9e3216 | Anthony Liguori | |
978 | cf03eb2c | Arun R Bharadwaj | if (S_ISFIFO(stbuf->st_mode)) {
|
979 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_NAMED_PIPE; |
980 | cf03eb2c | Arun R Bharadwaj | } |
981 | bb9e3216 | Anthony Liguori | |
982 | cf03eb2c | Arun R Bharadwaj | if (S_ISBLK(stbuf->st_mode) || S_ISCHR(stbuf->st_mode)) {
|
983 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_DEVICE; |
984 | cf03eb2c | Arun R Bharadwaj | } |
985 | bb9e3216 | Anthony Liguori | |
986 | cf03eb2c | Arun R Bharadwaj | if (stbuf->st_mode & S_ISUID) {
|
987 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SETUID; |
988 | cf03eb2c | Arun R Bharadwaj | } |
989 | bb9e3216 | Anthony Liguori | |
990 | cf03eb2c | Arun R Bharadwaj | if (stbuf->st_mode & S_ISGID) {
|
991 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SETGID; |
992 | cf03eb2c | Arun R Bharadwaj | } |
993 | bb9e3216 | Anthony Liguori | |
994 | cf03eb2c | Arun R Bharadwaj | if (stbuf->st_mode & S_ISVTX) {
|
995 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SETVTX; |
996 | bb9e3216 | Anthony Liguori | } |
997 | bb9e3216 | Anthony Liguori | |
998 | bb9e3216 | Anthony Liguori | return mode;
|
999 | bb9e3216 | Anthony Liguori | } |
1000 | bb9e3216 | Anthony Liguori | |
1001 | bb9e3216 | Anthony Liguori | static int stat_to_v9stat(V9fsState *s, V9fsString *name, |
1002 | bb9e3216 | Anthony Liguori | const struct stat *stbuf, |
1003 | bb9e3216 | Anthony Liguori | V9fsStat *v9stat) |
1004 | bb9e3216 | Anthony Liguori | { |
1005 | bb9e3216 | Anthony Liguori | int err;
|
1006 | bb9e3216 | Anthony Liguori | const char *str; |
1007 | bb9e3216 | Anthony Liguori | |
1008 | bb9e3216 | Anthony Liguori | memset(v9stat, 0, sizeof(*v9stat)); |
1009 | bb9e3216 | Anthony Liguori | |
1010 | bb9e3216 | Anthony Liguori | stat_to_qid(stbuf, &v9stat->qid); |
1011 | bb9e3216 | Anthony Liguori | v9stat->mode = stat_to_v9mode(stbuf); |
1012 | bb9e3216 | Anthony Liguori | v9stat->atime = stbuf->st_atime; |
1013 | bb9e3216 | Anthony Liguori | v9stat->mtime = stbuf->st_mtime; |
1014 | bb9e3216 | Anthony Liguori | v9stat->length = stbuf->st_size; |
1015 | bb9e3216 | Anthony Liguori | |
1016 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->uid); |
1017 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->gid); |
1018 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->muid); |
1019 | bb9e3216 | Anthony Liguori | |
1020 | cf03eb2c | Arun R Bharadwaj | v9stat->n_uid = stbuf->st_uid; |
1021 | cf03eb2c | Arun R Bharadwaj | v9stat->n_gid = stbuf->st_gid; |
1022 | cf03eb2c | Arun R Bharadwaj | v9stat->n_muid = 0;
|
1023 | bb9e3216 | Anthony Liguori | |
1024 | cf03eb2c | Arun R Bharadwaj | v9fs_string_null(&v9stat->extension); |
1025 | bb9e3216 | Anthony Liguori | |
1026 | cf03eb2c | Arun R Bharadwaj | if (v9stat->mode & P9_STAT_MODE_SYMLINK) {
|
1027 | 7a5ca31e | Venkateswararao Jujjuri | err = v9fs_co_readlink(s, name, &v9stat->extension); |
1028 | 7a5ca31e | Venkateswararao Jujjuri | if (err < 0) { |
1029 | cf03eb2c | Arun R Bharadwaj | return err;
|
1030 | bb9e3216 | Anthony Liguori | } |
1031 | cf03eb2c | Arun R Bharadwaj | } else if (v9stat->mode & P9_STAT_MODE_DEVICE) { |
1032 | cf03eb2c | Arun R Bharadwaj | v9fs_string_sprintf(&v9stat->extension, "%c %u %u",
|
1033 | cf03eb2c | Arun R Bharadwaj | S_ISCHR(stbuf->st_mode) ? 'c' : 'b', |
1034 | cf03eb2c | Arun R Bharadwaj | major(stbuf->st_rdev), minor(stbuf->st_rdev)); |
1035 | cf03eb2c | Arun R Bharadwaj | } else if (S_ISDIR(stbuf->st_mode) || S_ISREG(stbuf->st_mode)) { |
1036 | c9ba47dc | Stefan Weil | v9fs_string_sprintf(&v9stat->extension, "%s %lu",
|
1037 | c9ba47dc | Stefan Weil | "HARDLINKCOUNT", (unsigned long)stbuf->st_nlink); |
1038 | bb9e3216 | Anthony Liguori | } |
1039 | bb9e3216 | Anthony Liguori | |
1040 | bb9e3216 | Anthony Liguori | str = strrchr(name->data, '/');
|
1041 | bb9e3216 | Anthony Liguori | if (str) {
|
1042 | bb9e3216 | Anthony Liguori | str += 1;
|
1043 | bb9e3216 | Anthony Liguori | } else {
|
1044 | bb9e3216 | Anthony Liguori | str = name->data; |
1045 | bb9e3216 | Anthony Liguori | } |
1046 | bb9e3216 | Anthony Liguori | |
1047 | bb9e3216 | Anthony Liguori | v9fs_string_sprintf(&v9stat->name, "%s", str);
|
1048 | bb9e3216 | Anthony Liguori | |
1049 | bb9e3216 | Anthony Liguori | v9stat->size = 61 +
|
1050 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->name) + |
1051 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->uid) + |
1052 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->gid) + |
1053 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->muid) + |
1054 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->extension); |
1055 | bb9e3216 | Anthony Liguori | return 0; |
1056 | bb9e3216 | Anthony Liguori | } |
1057 | bb9e3216 | Anthony Liguori | |
1058 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_MODE 0x00000001ULL |
1059 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_NLINK 0x00000002ULL |
1060 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_UID 0x00000004ULL |
1061 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_GID 0x00000008ULL |
1062 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_RDEV 0x00000010ULL |
1063 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_ATIME 0x00000020ULL |
1064 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_MTIME 0x00000040ULL |
1065 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_CTIME 0x00000080ULL |
1066 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_INO 0x00000100ULL |
1067 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_SIZE 0x00000200ULL |
1068 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_BLOCKS 0x00000400ULL |
1069 | 00ede4c2 | Sripathi Kodi | |
1070 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_BTIME 0x00000800ULL |
1071 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_GEN 0x00001000ULL |
1072 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_DATA_VERSION 0x00002000ULL |
1073 | 00ede4c2 | Sripathi Kodi | |
1074 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_BASIC 0x000007ffULL /* Mask for fields up to BLOCKS */ |
1075 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_ALL 0x00003fffULL /* Mask for All fields above */ |
1076 | 00ede4c2 | Sripathi Kodi | |
1077 | 00ede4c2 | Sripathi Kodi | |
1078 | 00ede4c2 | Sripathi Kodi | static void stat_to_v9stat_dotl(V9fsState *s, const struct stat *stbuf, |
1079 | 8db21ce7 | Aneesh Kumar K.V | V9fsStatDotl *v9lstat) |
1080 | 00ede4c2 | Sripathi Kodi | { |
1081 | 00ede4c2 | Sripathi Kodi | memset(v9lstat, 0, sizeof(*v9lstat)); |
1082 | 00ede4c2 | Sripathi Kodi | |
1083 | 00ede4c2 | Sripathi Kodi | v9lstat->st_mode = stbuf->st_mode; |
1084 | 00ede4c2 | Sripathi Kodi | v9lstat->st_nlink = stbuf->st_nlink; |
1085 | 00ede4c2 | Sripathi Kodi | v9lstat->st_uid = stbuf->st_uid; |
1086 | 00ede4c2 | Sripathi Kodi | v9lstat->st_gid = stbuf->st_gid; |
1087 | 00ede4c2 | Sripathi Kodi | v9lstat->st_rdev = stbuf->st_rdev; |
1088 | 00ede4c2 | Sripathi Kodi | v9lstat->st_size = stbuf->st_size; |
1089 | 00ede4c2 | Sripathi Kodi | v9lstat->st_blksize = stbuf->st_blksize; |
1090 | 00ede4c2 | Sripathi Kodi | v9lstat->st_blocks = stbuf->st_blocks; |
1091 | 00ede4c2 | Sripathi Kodi | v9lstat->st_atime_sec = stbuf->st_atime; |
1092 | 00ede4c2 | Sripathi Kodi | v9lstat->st_atime_nsec = stbuf->st_atim.tv_nsec; |
1093 | 00ede4c2 | Sripathi Kodi | v9lstat->st_mtime_sec = stbuf->st_mtime; |
1094 | 00ede4c2 | Sripathi Kodi | v9lstat->st_mtime_nsec = stbuf->st_mtim.tv_nsec; |
1095 | 00ede4c2 | Sripathi Kodi | v9lstat->st_ctime_sec = stbuf->st_ctime; |
1096 | 00ede4c2 | Sripathi Kodi | v9lstat->st_ctime_nsec = stbuf->st_ctim.tv_nsec; |
1097 | 00ede4c2 | Sripathi Kodi | /* Currently we only support BASIC fields in stat */
|
1098 | 00ede4c2 | Sripathi Kodi | v9lstat->st_result_mask = P9_STATS_BASIC; |
1099 | 00ede4c2 | Sripathi Kodi | |
1100 | 00ede4c2 | Sripathi Kodi | stat_to_qid(stbuf, &v9lstat->qid); |
1101 | 00ede4c2 | Sripathi Kodi | } |
1102 | 00ede4c2 | Sripathi Kodi | |
1103 | 1f5a89bf | Anthony Liguori | static struct iovec *adjust_sg(struct iovec *sg, int len, int *iovcnt) |
1104 | 1f5a89bf | Anthony Liguori | { |
1105 | 1f5a89bf | Anthony Liguori | while (len && *iovcnt) {
|
1106 | 1f5a89bf | Anthony Liguori | if (len < sg->iov_len) {
|
1107 | 1f5a89bf | Anthony Liguori | sg->iov_len -= len; |
1108 | 1f5a89bf | Anthony Liguori | sg->iov_base += len; |
1109 | 1f5a89bf | Anthony Liguori | len = 0;
|
1110 | 1f5a89bf | Anthony Liguori | } else {
|
1111 | 1f5a89bf | Anthony Liguori | len -= sg->iov_len; |
1112 | 1f5a89bf | Anthony Liguori | sg++; |
1113 | 1f5a89bf | Anthony Liguori | *iovcnt -= 1;
|
1114 | 1f5a89bf | Anthony Liguori | } |
1115 | 1f5a89bf | Anthony Liguori | } |
1116 | 1f5a89bf | Anthony Liguori | |
1117 | 1f5a89bf | Anthony Liguori | return sg;
|
1118 | 1f5a89bf | Anthony Liguori | } |
1119 | 1f5a89bf | Anthony Liguori | |
1120 | 1f5a89bf | Anthony Liguori | static struct iovec *cap_sg(struct iovec *sg, int cap, int *cnt) |
1121 | 1f5a89bf | Anthony Liguori | { |
1122 | 1f5a89bf | Anthony Liguori | int i;
|
1123 | 1f5a89bf | Anthony Liguori | int total = 0; |
1124 | 1f5a89bf | Anthony Liguori | |
1125 | 1f5a89bf | Anthony Liguori | for (i = 0; i < *cnt; i++) { |
1126 | 1f5a89bf | Anthony Liguori | if ((total + sg[i].iov_len) > cap) {
|
1127 | 1f5a89bf | Anthony Liguori | sg[i].iov_len -= ((total + sg[i].iov_len) - cap); |
1128 | 1f5a89bf | Anthony Liguori | i++; |
1129 | 1f5a89bf | Anthony Liguori | break;
|
1130 | 1f5a89bf | Anthony Liguori | } |
1131 | 1f5a89bf | Anthony Liguori | total += sg[i].iov_len; |
1132 | 1f5a89bf | Anthony Liguori | } |
1133 | 1f5a89bf | Anthony Liguori | |
1134 | 1f5a89bf | Anthony Liguori | *cnt = i; |
1135 | 1f5a89bf | Anthony Liguori | |
1136 | 1f5a89bf | Anthony Liguori | return sg;
|
1137 | 1f5a89bf | Anthony Liguori | } |
1138 | 1f5a89bf | Anthony Liguori | |
1139 | 1f5a89bf | Anthony Liguori | static void print_sg(struct iovec *sg, int cnt) |
1140 | 1f5a89bf | Anthony Liguori | { |
1141 | 1f5a89bf | Anthony Liguori | int i;
|
1142 | 1f5a89bf | Anthony Liguori | |
1143 | 1f5a89bf | Anthony Liguori | printf("sg[%d]: {", cnt);
|
1144 | 1f5a89bf | Anthony Liguori | for (i = 0; i < cnt; i++) { |
1145 | 1f5a89bf | Anthony Liguori | if (i) {
|
1146 | 1f5a89bf | Anthony Liguori | printf(", ");
|
1147 | 1f5a89bf | Anthony Liguori | } |
1148 | 1f5a89bf | Anthony Liguori | printf("(%p, %zd)", sg[i].iov_base, sg[i].iov_len);
|
1149 | 1f5a89bf | Anthony Liguori | } |
1150 | 1f5a89bf | Anthony Liguori | printf("}\n");
|
1151 | 1f5a89bf | Anthony Liguori | } |
1152 | 1f5a89bf | Anthony Liguori | |
1153 | 8cf89e00 | Anthony Liguori | static void v9fs_fix_path(V9fsString *dst, V9fsString *src, int len) |
1154 | 8cf89e00 | Anthony Liguori | { |
1155 | 8cf89e00 | Anthony Liguori | V9fsString str; |
1156 | 8cf89e00 | Anthony Liguori | v9fs_string_init(&str); |
1157 | 8cf89e00 | Anthony Liguori | v9fs_string_copy(&str, dst); |
1158 | 8cf89e00 | Anthony Liguori | v9fs_string_sprintf(dst, "%s%s", src->data, str.data+len);
|
1159 | 8cf89e00 | Anthony Liguori | v9fs_string_free(&str); |
1160 | 8cf89e00 | Anthony Liguori | } |
1161 | 8cf89e00 | Anthony Liguori | |
1162 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_version(void *opaque) |
1163 | 9f107513 | Anthony Liguori | { |
1164 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
1165 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
1166 | 92c1ad03 | Anthony Liguori | V9fsString version; |
1167 | 92c1ad03 | Anthony Liguori | size_t offset = 7;
|
1168 | 92c1ad03 | Anthony Liguori | |
1169 | 5e94c103 | M. Mohan Kumar | pdu_unmarshal(pdu, offset, "ds", &s->msize, &version);
|
1170 | 92c1ad03 | Anthony Liguori | |
1171 | 84151514 | M. Mohan Kumar | if (!strcmp(version.data, "9P2000.u")) { |
1172 | 84151514 | M. Mohan Kumar | s->proto_version = V9FS_PROTO_2000U; |
1173 | 84151514 | M. Mohan Kumar | } else if (!strcmp(version.data, "9P2000.L")) { |
1174 | 84151514 | M. Mohan Kumar | s->proto_version = V9FS_PROTO_2000L; |
1175 | 84151514 | M. Mohan Kumar | } else {
|
1176 | 92c1ad03 | Anthony Liguori | v9fs_string_sprintf(&version, "unknown");
|
1177 | 9f107513 | Anthony Liguori | } |
1178 | 92c1ad03 | Anthony Liguori | |
1179 | 5e94c103 | M. Mohan Kumar | offset += pdu_marshal(pdu, offset, "ds", s->msize, &version);
|
1180 | 92c1ad03 | Anthony Liguori | complete_pdu(s, pdu, offset); |
1181 | 92c1ad03 | Anthony Liguori | |
1182 | 92c1ad03 | Anthony Liguori | v9fs_string_free(&version); |
1183 | ff06030f | Venkateswararao Jujjuri (JV) | return;
|
1184 | 9f107513 | Anthony Liguori | } |
1185 | 9f107513 | Anthony Liguori | |
1186 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_attach(void *opaque) |
1187 | 9f107513 | Anthony Liguori | { |
1188 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
1189 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
1190 | 955efc47 | Anthony Liguori | int32_t fid, afid, n_uname; |
1191 | 955efc47 | Anthony Liguori | V9fsString uname, aname; |
1192 | 955efc47 | Anthony Liguori | V9fsFidState *fidp; |
1193 | 955efc47 | Anthony Liguori | size_t offset = 7;
|
1194 | 8c158561 | Aneesh Kumar K.V | V9fsQID qid; |
1195 | 955efc47 | Anthony Liguori | ssize_t err; |
1196 | 955efc47 | Anthony Liguori | |
1197 | 955efc47 | Anthony Liguori | pdu_unmarshal(pdu, offset, "ddssd", &fid, &afid, &uname, &aname, &n_uname);
|
1198 | 955efc47 | Anthony Liguori | |
1199 | 955efc47 | Anthony Liguori | fidp = alloc_fid(s, fid); |
1200 | 955efc47 | Anthony Liguori | if (fidp == NULL) { |
1201 | 955efc47 | Anthony Liguori | err = -EINVAL; |
1202 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1203 | 9f107513 | Anthony Liguori | } |
1204 | 955efc47 | Anthony Liguori | fidp->uid = n_uname; |
1205 | 955efc47 | Anthony Liguori | v9fs_string_sprintf(&fidp->path, "%s", "/"); |
1206 | 955efc47 | Anthony Liguori | err = fid_to_qid(s, fidp, &qid); |
1207 | 8c158561 | Aneesh Kumar K.V | if (err < 0) { |
1208 | 955efc47 | Anthony Liguori | err = -EINVAL; |
1209 | 84dfb926 | Aneesh Kumar K.V | clunk_fid(s, fid); |
1210 | 955efc47 | Anthony Liguori | goto out;
|
1211 | 955efc47 | Anthony Liguori | } |
1212 | 955efc47 | Anthony Liguori | offset += pdu_marshal(pdu, offset, "Q", &qid);
|
1213 | 955efc47 | Anthony Liguori | err = offset; |
1214 | 955efc47 | Anthony Liguori | out:
|
1215 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
1216 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1217 | 955efc47 | Anthony Liguori | complete_pdu(s, pdu, err); |
1218 | 955efc47 | Anthony Liguori | v9fs_string_free(&uname); |
1219 | 955efc47 | Anthony Liguori | v9fs_string_free(&aname); |
1220 | 9f107513 | Anthony Liguori | } |
1221 | 9f107513 | Anthony Liguori | |
1222 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_stat(void *opaque) |
1223 | 9f107513 | Anthony Liguori | { |
1224 | 4da7d3fa | Anthony Liguori | int32_t fid; |
1225 | d8e0c29e | Aneesh Kumar K.V | V9fsStat v9stat; |
1226 | 4da7d3fa | Anthony Liguori | ssize_t err = 0;
|
1227 | d8e0c29e | Aneesh Kumar K.V | size_t offset = 7;
|
1228 | d8e0c29e | Aneesh Kumar K.V | struct stat stbuf;
|
1229 | d8e0c29e | Aneesh Kumar K.V | V9fsFidState *fidp; |
1230 | d8e0c29e | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
1231 | d8e0c29e | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1232 | 4da7d3fa | Anthony Liguori | |
1233 | d8e0c29e | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "d", &fid);
|
1234 | 84dfb926 | Aneesh Kumar K.V | |
1235 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(s, fid); |
1236 | d8e0c29e | Aneesh Kumar K.V | if (fidp == NULL) { |
1237 | 4da7d3fa | Anthony Liguori | err = -ENOENT; |
1238 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1239 | 9f107513 | Anthony Liguori | } |
1240 | d8e0c29e | Aneesh Kumar K.V | err = v9fs_co_lstat(s, &fidp->path, &stbuf); |
1241 | d8e0c29e | Aneesh Kumar K.V | if (err < 0) { |
1242 | d8e0c29e | Aneesh Kumar K.V | goto out;
|
1243 | d8e0c29e | Aneesh Kumar K.V | } |
1244 | d8e0c29e | Aneesh Kumar K.V | err = stat_to_v9stat(s, &fidp->path, &stbuf, &v9stat); |
1245 | d8e0c29e | Aneesh Kumar K.V | if (err < 0) { |
1246 | d8e0c29e | Aneesh Kumar K.V | goto out;
|
1247 | d8e0c29e | Aneesh Kumar K.V | } |
1248 | d8e0c29e | Aneesh Kumar K.V | offset += pdu_marshal(pdu, offset, "wS", 0, &v9stat); |
1249 | d8e0c29e | Aneesh Kumar K.V | err = offset; |
1250 | d8e0c29e | Aneesh Kumar K.V | v9fs_stat_free(&v9stat); |
1251 | 4da7d3fa | Anthony Liguori | out:
|
1252 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
1253 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1254 | d8e0c29e | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
1255 | 9f107513 | Anthony Liguori | } |
1256 | 9f107513 | Anthony Liguori | |
1257 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_getattr(void *opaque) |
1258 | 00ede4c2 | Sripathi Kodi | { |
1259 | 00ede4c2 | Sripathi Kodi | int32_t fid; |
1260 | 8db21ce7 | Aneesh Kumar K.V | size_t offset = 7;
|
1261 | 8db21ce7 | Aneesh Kumar K.V | ssize_t retval = 0;
|
1262 | 8db21ce7 | Aneesh Kumar K.V | struct stat stbuf;
|
1263 | 00ede4c2 | Sripathi Kodi | V9fsFidState *fidp; |
1264 | 00ede4c2 | Sripathi Kodi | uint64_t request_mask; |
1265 | 8db21ce7 | Aneesh Kumar K.V | V9fsStatDotl v9stat_dotl; |
1266 | 8db21ce7 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
1267 | 8db21ce7 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1268 | 00ede4c2 | Sripathi Kodi | |
1269 | 8db21ce7 | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "dq", &fid, &request_mask);
|
1270 | 00ede4c2 | Sripathi Kodi | |
1271 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(s, fid); |
1272 | 00ede4c2 | Sripathi Kodi | if (fidp == NULL) { |
1273 | 8db21ce7 | Aneesh Kumar K.V | retval = -ENOENT; |
1274 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1275 | 00ede4c2 | Sripathi Kodi | } |
1276 | 8db21ce7 | Aneesh Kumar K.V | /*
|
1277 | 8db21ce7 | Aneesh Kumar K.V | * Currently we only support BASIC fields in stat, so there is no
|
1278 | 00ede4c2 | Sripathi Kodi | * need to look at request_mask.
|
1279 | 00ede4c2 | Sripathi Kodi | */
|
1280 | 8db21ce7 | Aneesh Kumar K.V | retval = v9fs_co_lstat(s, &fidp->path, &stbuf); |
1281 | 8db21ce7 | Aneesh Kumar K.V | if (retval < 0) { |
1282 | 8db21ce7 | Aneesh Kumar K.V | goto out;
|
1283 | 8db21ce7 | Aneesh Kumar K.V | } |
1284 | 8db21ce7 | Aneesh Kumar K.V | stat_to_v9stat_dotl(s, &stbuf, &v9stat_dotl); |
1285 | 8db21ce7 | Aneesh Kumar K.V | retval = offset; |
1286 | 8db21ce7 | Aneesh Kumar K.V | retval += pdu_marshal(pdu, offset, "A", &v9stat_dotl);
|
1287 | 00ede4c2 | Sripathi Kodi | out:
|
1288 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
1289 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1290 | 8db21ce7 | Aneesh Kumar K.V | complete_pdu(s, pdu, retval); |
1291 | 00ede4c2 | Sripathi Kodi | } |
1292 | 00ede4c2 | Sripathi Kodi | |
1293 | c79ce737 | Sripathi Kodi | /* From Linux kernel code */
|
1294 | c79ce737 | Sripathi Kodi | #define ATTR_MODE (1 << 0) |
1295 | c79ce737 | Sripathi Kodi | #define ATTR_UID (1 << 1) |
1296 | c79ce737 | Sripathi Kodi | #define ATTR_GID (1 << 2) |
1297 | c79ce737 | Sripathi Kodi | #define ATTR_SIZE (1 << 3) |
1298 | c79ce737 | Sripathi Kodi | #define ATTR_ATIME (1 << 4) |
1299 | c79ce737 | Sripathi Kodi | #define ATTR_MTIME (1 << 5) |
1300 | c79ce737 | Sripathi Kodi | #define ATTR_CTIME (1 << 6) |
1301 | c79ce737 | Sripathi Kodi | #define ATTR_MASK 127 |
1302 | c79ce737 | Sripathi Kodi | #define ATTR_ATIME_SET (1 << 7) |
1303 | c79ce737 | Sripathi Kodi | #define ATTR_MTIME_SET (1 << 8) |
1304 | c79ce737 | Sripathi Kodi | |
1305 | 65c05f9a | Aneesh Kumar K.V | static void v9fs_setattr(void *opaque) |
1306 | c79ce737 | Sripathi Kodi | { |
1307 | 65c05f9a | Aneesh Kumar K.V | int err = 0; |
1308 | 65c05f9a | Aneesh Kumar K.V | int32_t fid; |
1309 | 65c05f9a | Aneesh Kumar K.V | V9fsFidState *fidp; |
1310 | 65c05f9a | Aneesh Kumar K.V | size_t offset = 7;
|
1311 | 65c05f9a | Aneesh Kumar K.V | V9fsIattr v9iattr; |
1312 | 65c05f9a | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
1313 | 65c05f9a | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1314 | c79ce737 | Sripathi Kodi | |
1315 | 65c05f9a | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "dI", &fid, &v9iattr);
|
1316 | c79ce737 | Sripathi Kodi | |
1317 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(s, fid); |
1318 | 65c05f9a | Aneesh Kumar K.V | if (fidp == NULL) { |
1319 | 65c05f9a | Aneesh Kumar K.V | err = -EINVAL; |
1320 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1321 | c79ce737 | Sripathi Kodi | } |
1322 | 65c05f9a | Aneesh Kumar K.V | if (v9iattr.valid & ATTR_MODE) {
|
1323 | 65c05f9a | Aneesh Kumar K.V | err = v9fs_co_chmod(s, &fidp->path, v9iattr.mode); |
1324 | 65c05f9a | Aneesh Kumar K.V | if (err < 0) { |
1325 | 65c05f9a | Aneesh Kumar K.V | goto out;
|
1326 | c79ce737 | Sripathi Kodi | } |
1327 | c79ce737 | Sripathi Kodi | } |
1328 | 65c05f9a | Aneesh Kumar K.V | if (v9iattr.valid & (ATTR_ATIME | ATTR_MTIME)) {
|
1329 | c79ce737 | Sripathi Kodi | struct timespec times[2]; |
1330 | 65c05f9a | Aneesh Kumar K.V | if (v9iattr.valid & ATTR_ATIME) {
|
1331 | 65c05f9a | Aneesh Kumar K.V | if (v9iattr.valid & ATTR_ATIME_SET) {
|
1332 | 65c05f9a | Aneesh Kumar K.V | times[0].tv_sec = v9iattr.atime_sec;
|
1333 | 65c05f9a | Aneesh Kumar K.V | times[0].tv_nsec = v9iattr.atime_nsec;
|
1334 | c79ce737 | Sripathi Kodi | } else {
|
1335 | c79ce737 | Sripathi Kodi | times[0].tv_nsec = UTIME_NOW;
|
1336 | c79ce737 | Sripathi Kodi | } |
1337 | c79ce737 | Sripathi Kodi | } else {
|
1338 | c79ce737 | Sripathi Kodi | times[0].tv_nsec = UTIME_OMIT;
|
1339 | c79ce737 | Sripathi Kodi | } |
1340 | 65c05f9a | Aneesh Kumar K.V | if (v9iattr.valid & ATTR_MTIME) {
|
1341 | 65c05f9a | Aneesh Kumar K.V | if (v9iattr.valid & ATTR_MTIME_SET) {
|
1342 | 65c05f9a | Aneesh Kumar K.V | times[1].tv_sec = v9iattr.mtime_sec;
|
1343 | 65c05f9a | Aneesh Kumar K.V | times[1].tv_nsec = v9iattr.mtime_nsec;
|
1344 | c79ce737 | Sripathi Kodi | } else {
|
1345 | c79ce737 | Sripathi Kodi | times[1].tv_nsec = UTIME_NOW;
|
1346 | c79ce737 | Sripathi Kodi | } |
1347 | c79ce737 | Sripathi Kodi | } else {
|
1348 | c79ce737 | Sripathi Kodi | times[1].tv_nsec = UTIME_OMIT;
|
1349 | c79ce737 | Sripathi Kodi | } |
1350 | 65c05f9a | Aneesh Kumar K.V | err = v9fs_co_utimensat(s, &fidp->path, times); |
1351 | 65c05f9a | Aneesh Kumar K.V | if (err < 0) { |
1352 | 65c05f9a | Aneesh Kumar K.V | goto out;
|
1353 | 65c05f9a | Aneesh Kumar K.V | } |
1354 | c79ce737 | Sripathi Kodi | } |
1355 | 65c05f9a | Aneesh Kumar K.V | /*
|
1356 | 65c05f9a | Aneesh Kumar K.V | * If the only valid entry in iattr is ctime we can call
|
1357 | 65c05f9a | Aneesh Kumar K.V | * chown(-1,-1) to update the ctime of the file
|
1358 | 65c05f9a | Aneesh Kumar K.V | */
|
1359 | 65c05f9a | Aneesh Kumar K.V | if ((v9iattr.valid & (ATTR_UID | ATTR_GID)) ||
|
1360 | 65c05f9a | Aneesh Kumar K.V | ((v9iattr.valid & ATTR_CTIME) |
1361 | 65c05f9a | Aneesh Kumar K.V | && !((v9iattr.valid & ATTR_MASK) & ~ATTR_CTIME))) { |
1362 | 65c05f9a | Aneesh Kumar K.V | if (!(v9iattr.valid & ATTR_UID)) {
|
1363 | 65c05f9a | Aneesh Kumar K.V | v9iattr.uid = -1;
|
1364 | 65c05f9a | Aneesh Kumar K.V | } |
1365 | 65c05f9a | Aneesh Kumar K.V | if (!(v9iattr.valid & ATTR_GID)) {
|
1366 | 65c05f9a | Aneesh Kumar K.V | v9iattr.gid = -1;
|
1367 | 65c05f9a | Aneesh Kumar K.V | } |
1368 | 65c05f9a | Aneesh Kumar K.V | err = v9fs_co_chown(s, &fidp->path, v9iattr.uid, |
1369 | 65c05f9a | Aneesh Kumar K.V | v9iattr.gid); |
1370 | 65c05f9a | Aneesh Kumar K.V | if (err < 0) { |
1371 | 65c05f9a | Aneesh Kumar K.V | goto out;
|
1372 | 65c05f9a | Aneesh Kumar K.V | } |
1373 | c79ce737 | Sripathi Kodi | } |
1374 | 65c05f9a | Aneesh Kumar K.V | if (v9iattr.valid & (ATTR_SIZE)) {
|
1375 | 65c05f9a | Aneesh Kumar K.V | err = v9fs_co_truncate(s, &fidp->path, v9iattr.size); |
1376 | 65c05f9a | Aneesh Kumar K.V | if (err < 0) { |
1377 | 65c05f9a | Aneesh Kumar K.V | goto out;
|
1378 | 65c05f9a | Aneesh Kumar K.V | } |
1379 | c79ce737 | Sripathi Kodi | } |
1380 | 65c05f9a | Aneesh Kumar K.V | err = offset; |
1381 | c79ce737 | Sripathi Kodi | out:
|
1382 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
1383 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1384 | 65c05f9a | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
1385 | c79ce737 | Sripathi Kodi | } |
1386 | c79ce737 | Sripathi Kodi | |
1387 | 3cc19c0c | Aneesh Kumar K.V | static int v9fs_walk_marshal(V9fsPDU *pdu, uint16_t nwnames, V9fsQID *qids) |
1388 | ff5e54c9 | Anthony Liguori | { |
1389 | ff5e54c9 | Anthony Liguori | int i;
|
1390 | 3cc19c0c | Aneesh Kumar K.V | size_t offset = 7;
|
1391 | 3cc19c0c | Aneesh Kumar K.V | offset += pdu_marshal(pdu, offset, "w", nwnames);
|
1392 | 3cc19c0c | Aneesh Kumar K.V | for (i = 0; i < nwnames; i++) { |
1393 | 3cc19c0c | Aneesh Kumar K.V | offset += pdu_marshal(pdu, offset, "Q", &qids[i]);
|
1394 | ff5e54c9 | Anthony Liguori | } |
1395 | 3cc19c0c | Aneesh Kumar K.V | return offset;
|
1396 | ff5e54c9 | Anthony Liguori | } |
1397 | ff5e54c9 | Anthony Liguori | |
1398 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_walk(void *opaque) |
1399 | 9f107513 | Anthony Liguori | { |
1400 | 3cc19c0c | Aneesh Kumar K.V | int name_idx;
|
1401 | 3cc19c0c | Aneesh Kumar K.V | V9fsQID *qids = NULL;
|
1402 | 3cc19c0c | Aneesh Kumar K.V | int i, err = 0; |
1403 | 3cc19c0c | Aneesh Kumar K.V | V9fsString path; |
1404 | 3cc19c0c | Aneesh Kumar K.V | uint16_t nwnames; |
1405 | 3cc19c0c | Aneesh Kumar K.V | struct stat stbuf;
|
1406 | 3cc19c0c | Aneesh Kumar K.V | size_t offset = 7;
|
1407 | 3cc19c0c | Aneesh Kumar K.V | int32_t fid, newfid; |
1408 | 3cc19c0c | Aneesh Kumar K.V | V9fsString *wnames = NULL;
|
1409 | 3cc19c0c | Aneesh Kumar K.V | V9fsFidState *fidp; |
1410 | 84dfb926 | Aneesh Kumar K.V | V9fsFidState *newfidp = NULL;;
|
1411 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
1412 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
1413 | ff5e54c9 | Anthony Liguori | |
1414 | 3cc19c0c | Aneesh Kumar K.V | offset += pdu_unmarshal(pdu, offset, "ddw", &fid,
|
1415 | 3cc19c0c | Aneesh Kumar K.V | &newfid, &nwnames); |
1416 | ff5e54c9 | Anthony Liguori | |
1417 | 3cc19c0c | Aneesh Kumar K.V | if (nwnames && nwnames <= P9_MAXWELEM) {
|
1418 | 3cc19c0c | Aneesh Kumar K.V | wnames = g_malloc0(sizeof(wnames[0]) * nwnames); |
1419 | 3cc19c0c | Aneesh Kumar K.V | qids = g_malloc0(sizeof(qids[0]) * nwnames); |
1420 | 3cc19c0c | Aneesh Kumar K.V | for (i = 0; i < nwnames; i++) { |
1421 | 3cc19c0c | Aneesh Kumar K.V | offset += pdu_unmarshal(pdu, offset, "s", &wnames[i]);
|
1422 | ff5e54c9 | Anthony Liguori | } |
1423 | 3cc19c0c | Aneesh Kumar K.V | |
1424 | 3cc19c0c | Aneesh Kumar K.V | } else if (nwnames > P9_MAXWELEM) { |
1425 | 4f8dee2d | Harsh Prateek Bora | err = -EINVAL; |
1426 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1427 | ff5e54c9 | Anthony Liguori | } |
1428 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(s, fid); |
1429 | 3cc19c0c | Aneesh Kumar K.V | if (fidp == NULL) { |
1430 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1431 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1432 | ff5e54c9 | Anthony Liguori | } |
1433 | ff5e54c9 | Anthony Liguori | if (fid == newfid) {
|
1434 | 3cc19c0c | Aneesh Kumar K.V | BUG_ON(fidp->fid_type != P9_FID_NONE); |
1435 | 3cc19c0c | Aneesh Kumar K.V | v9fs_string_init(&path); |
1436 | 3cc19c0c | Aneesh Kumar K.V | for (name_idx = 0; name_idx < nwnames; name_idx++) { |
1437 | 3cc19c0c | Aneesh Kumar K.V | v9fs_string_sprintf(&path, "%s/%s",
|
1438 | 3cc19c0c | Aneesh Kumar K.V | fidp->path.data, wnames[name_idx].data); |
1439 | 3cc19c0c | Aneesh Kumar K.V | v9fs_string_copy(&fidp->path, &path); |
1440 | 3cc19c0c | Aneesh Kumar K.V | |
1441 | 3cc19c0c | Aneesh Kumar K.V | err = v9fs_co_lstat(s, &fidp->path, &stbuf); |
1442 | 3cc19c0c | Aneesh Kumar K.V | if (err < 0) { |
1443 | 3cc19c0c | Aneesh Kumar K.V | v9fs_string_free(&path); |
1444 | 3cc19c0c | Aneesh Kumar K.V | goto out;
|
1445 | 3cc19c0c | Aneesh Kumar K.V | } |
1446 | 3cc19c0c | Aneesh Kumar K.V | stat_to_qid(&stbuf, &qids[name_idx]); |
1447 | ff5e54c9 | Anthony Liguori | } |
1448 | 3cc19c0c | Aneesh Kumar K.V | v9fs_string_free(&path); |
1449 | ff5e54c9 | Anthony Liguori | } else {
|
1450 | 3cc19c0c | Aneesh Kumar K.V | newfidp = alloc_fid(s, newfid); |
1451 | 3cc19c0c | Aneesh Kumar K.V | if (newfidp == NULL) { |
1452 | ff5e54c9 | Anthony Liguori | err = -EINVAL; |
1453 | ff5e54c9 | Anthony Liguori | goto out;
|
1454 | ff5e54c9 | Anthony Liguori | } |
1455 | 3cc19c0c | Aneesh Kumar K.V | newfidp->uid = fidp->uid; |
1456 | 3cc19c0c | Aneesh Kumar K.V | v9fs_string_init(&path); |
1457 | 3cc19c0c | Aneesh Kumar K.V | v9fs_string_copy(&newfidp->path, &fidp->path); |
1458 | 3cc19c0c | Aneesh Kumar K.V | for (name_idx = 0; name_idx < nwnames; name_idx++) { |
1459 | 3cc19c0c | Aneesh Kumar K.V | v9fs_string_sprintf(&path, "%s/%s", newfidp->path.data,
|
1460 | 3cc19c0c | Aneesh Kumar K.V | wnames[name_idx].data); |
1461 | 3cc19c0c | Aneesh Kumar K.V | v9fs_string_copy(&newfidp->path, &path); |
1462 | 3cc19c0c | Aneesh Kumar K.V | err = v9fs_co_lstat(s, &newfidp->path, &stbuf); |
1463 | 3cc19c0c | Aneesh Kumar K.V | if (err < 0) { |
1464 | 84dfb926 | Aneesh Kumar K.V | clunk_fid(s, newfidp->fid); |
1465 | 3cc19c0c | Aneesh Kumar K.V | v9fs_string_free(&path); |
1466 | 3cc19c0c | Aneesh Kumar K.V | goto out;
|
1467 | 3cc19c0c | Aneesh Kumar K.V | } |
1468 | 3cc19c0c | Aneesh Kumar K.V | stat_to_qid(&stbuf, &qids[name_idx]); |
1469 | ff5e54c9 | Anthony Liguori | } |
1470 | 3cc19c0c | Aneesh Kumar K.V | v9fs_string_free(&path); |
1471 | 9f107513 | Anthony Liguori | } |
1472 | 3cc19c0c | Aneesh Kumar K.V | err = v9fs_walk_marshal(pdu, nwnames, qids); |
1473 | ff5e54c9 | Anthony Liguori | out:
|
1474 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
1475 | 84dfb926 | Aneesh Kumar K.V | if (newfidp) {
|
1476 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, newfidp); |
1477 | 84dfb926 | Aneesh Kumar K.V | } |
1478 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1479 | 3cc19c0c | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
1480 | 3cc19c0c | Aneesh Kumar K.V | if (nwnames && nwnames <= P9_MAXWELEM) {
|
1481 | 3cc19c0c | Aneesh Kumar K.V | for (name_idx = 0; name_idx < nwnames; name_idx++) { |
1482 | 3cc19c0c | Aneesh Kumar K.V | v9fs_string_free(&wnames[name_idx]); |
1483 | 3cc19c0c | Aneesh Kumar K.V | } |
1484 | 3cc19c0c | Aneesh Kumar K.V | g_free(wnames); |
1485 | 3cc19c0c | Aneesh Kumar K.V | g_free(qids); |
1486 | 3cc19c0c | Aneesh Kumar K.V | } |
1487 | 9f107513 | Anthony Liguori | } |
1488 | 9f107513 | Anthony Liguori | |
1489 | 5e94c103 | M. Mohan Kumar | static int32_t get_iounit(V9fsState *s, V9fsString *name)
|
1490 | 5e94c103 | M. Mohan Kumar | { |
1491 | 5e94c103 | M. Mohan Kumar | struct statfs stbuf;
|
1492 | 5e94c103 | M. Mohan Kumar | int32_t iounit = 0;
|
1493 | 5e94c103 | M. Mohan Kumar | |
1494 | 5e94c103 | M. Mohan Kumar | /*
|
1495 | 5e94c103 | M. Mohan Kumar | * iounit should be multiples of f_bsize (host filesystem block size
|
1496 | 5e94c103 | M. Mohan Kumar | * and as well as less than (client msize - P9_IOHDRSZ))
|
1497 | 5e94c103 | M. Mohan Kumar | */
|
1498 | 857bc158 | Aneesh Kumar K.V | if (!v9fs_co_statfs(s, name, &stbuf)) {
|
1499 | 5e94c103 | M. Mohan Kumar | iounit = stbuf.f_bsize; |
1500 | 5e94c103 | M. Mohan Kumar | iounit *= (s->msize - P9_IOHDRSZ)/stbuf.f_bsize; |
1501 | 5e94c103 | M. Mohan Kumar | } |
1502 | 5e94c103 | M. Mohan Kumar | if (!iounit) {
|
1503 | 5e94c103 | M. Mohan Kumar | iounit = s->msize - P9_IOHDRSZ; |
1504 | 5e94c103 | M. Mohan Kumar | } |
1505 | 5e94c103 | M. Mohan Kumar | return iounit;
|
1506 | 5e94c103 | M. Mohan Kumar | } |
1507 | 5e94c103 | M. Mohan Kumar | |
1508 | 857bc158 | Aneesh Kumar K.V | static void v9fs_open(void *opaque) |
1509 | 5e94c103 | M. Mohan Kumar | { |
1510 | 857bc158 | Aneesh Kumar K.V | int flags;
|
1511 | 857bc158 | Aneesh Kumar K.V | int iounit;
|
1512 | 857bc158 | Aneesh Kumar K.V | int32_t fid; |
1513 | 857bc158 | Aneesh Kumar K.V | int32_t mode; |
1514 | 857bc158 | Aneesh Kumar K.V | V9fsQID qid; |
1515 | 857bc158 | Aneesh Kumar K.V | ssize_t err = 0;
|
1516 | 857bc158 | Aneesh Kumar K.V | size_t offset = 7;
|
1517 | 857bc158 | Aneesh Kumar K.V | struct stat stbuf;
|
1518 | 857bc158 | Aneesh Kumar K.V | V9fsFidState *fidp; |
1519 | 857bc158 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
1520 | 857bc158 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1521 | 5e94c103 | M. Mohan Kumar | |
1522 | 857bc158 | Aneesh Kumar K.V | if (s->proto_version == V9FS_PROTO_2000L) {
|
1523 | 857bc158 | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "dd", &fid, &mode);
|
1524 | 857bc158 | Aneesh Kumar K.V | } else {
|
1525 | 857bc158 | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "db", &fid, &mode);
|
1526 | 857bc158 | Aneesh Kumar K.V | } |
1527 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(s, fid); |
1528 | 857bc158 | Aneesh Kumar K.V | if (fidp == NULL) { |
1529 | 857bc158 | Aneesh Kumar K.V | err = -ENOENT; |
1530 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1531 | a6568fe2 | Anthony Liguori | } |
1532 | 857bc158 | Aneesh Kumar K.V | BUG_ON(fidp->fid_type != P9_FID_NONE); |
1533 | a6568fe2 | Anthony Liguori | |
1534 | 857bc158 | Aneesh Kumar K.V | err = v9fs_co_lstat(s, &fidp->path, &stbuf); |
1535 | 857bc158 | Aneesh Kumar K.V | if (err < 0) { |
1536 | a6568fe2 | Anthony Liguori | goto out;
|
1537 | a6568fe2 | Anthony Liguori | } |
1538 | 857bc158 | Aneesh Kumar K.V | stat_to_qid(&stbuf, &qid); |
1539 | 857bc158 | Aneesh Kumar K.V | if (S_ISDIR(stbuf.st_mode)) {
|
1540 | 857bc158 | Aneesh Kumar K.V | err = v9fs_co_opendir(s, fidp); |
1541 | 857bc158 | Aneesh Kumar K.V | if (err < 0) { |
1542 | 857bc158 | Aneesh Kumar K.V | goto out;
|
1543 | 857bc158 | Aneesh Kumar K.V | } |
1544 | 857bc158 | Aneesh Kumar K.V | fidp->fid_type = P9_FID_DIR; |
1545 | 857bc158 | Aneesh Kumar K.V | offset += pdu_marshal(pdu, offset, "Qd", &qid, 0); |
1546 | 857bc158 | Aneesh Kumar K.V | err = offset; |
1547 | a6568fe2 | Anthony Liguori | } else {
|
1548 | 771e9d4c | M. Mohan Kumar | if (s->proto_version == V9FS_PROTO_2000L) {
|
1549 | 857bc158 | Aneesh Kumar K.V | flags = mode; |
1550 | 630c2689 | Sripathi Kodi | flags &= ~(O_NOCTTY | O_ASYNC | O_CREAT); |
1551 | 0f8151cb | Venkateswararao Jujjuri (JV) | /* Ignore direct disk access hint until the server supports it. */
|
1552 | 0f8151cb | Venkateswararao Jujjuri (JV) | flags &= ~O_DIRECT; |
1553 | 771e9d4c | M. Mohan Kumar | } else {
|
1554 | 857bc158 | Aneesh Kumar K.V | flags = omode_to_uflags(mode); |
1555 | 771e9d4c | M. Mohan Kumar | } |
1556 | 857bc158 | Aneesh Kumar K.V | err = v9fs_co_open(s, fidp, flags); |
1557 | 857bc158 | Aneesh Kumar K.V | if (err < 0) { |
1558 | 857bc158 | Aneesh Kumar K.V | goto out;
|
1559 | 857bc158 | Aneesh Kumar K.V | } |
1560 | 857bc158 | Aneesh Kumar K.V | fidp->fid_type = P9_FID_FILE; |
1561 | 7a462745 | Aneesh Kumar K.V | fidp->open_flags = flags; |
1562 | 7a462745 | Aneesh Kumar K.V | if (flags & O_EXCL) {
|
1563 | 7a462745 | Aneesh Kumar K.V | /*
|
1564 | 7a462745 | Aneesh Kumar K.V | * We let the host file system do O_EXCL check
|
1565 | 7a462745 | Aneesh Kumar K.V | * We should not reclaim such fd
|
1566 | 7a462745 | Aneesh Kumar K.V | */
|
1567 | 7a462745 | Aneesh Kumar K.V | fidp->flags |= FID_NON_RECLAIMABLE; |
1568 | 7a462745 | Aneesh Kumar K.V | } |
1569 | 857bc158 | Aneesh Kumar K.V | iounit = get_iounit(s, &fidp->path); |
1570 | 857bc158 | Aneesh Kumar K.V | offset += pdu_marshal(pdu, offset, "Qd", &qid, iounit);
|
1571 | 857bc158 | Aneesh Kumar K.V | err = offset; |
1572 | a6568fe2 | Anthony Liguori | } |
1573 | a6568fe2 | Anthony Liguori | out:
|
1574 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
1575 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1576 | a6568fe2 | Anthony Liguori | complete_pdu(s, pdu, err); |
1577 | a6568fe2 | Anthony Liguori | } |
1578 | a6568fe2 | Anthony Liguori | |
1579 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_lcreate(void *opaque) |
1580 | c1568af5 | Venkateswararao Jujjuri (JV) | { |
1581 | c1568af5 | Venkateswararao Jujjuri (JV) | int32_t dfid, flags, mode; |
1582 | c1568af5 | Venkateswararao Jujjuri (JV) | gid_t gid; |
1583 | c1568af5 | Venkateswararao Jujjuri (JV) | ssize_t err = 0;
|
1584 | 36f8981f | Venkateswararao Jujjuri | ssize_t offset = 7;
|
1585 | 36f8981f | Venkateswararao Jujjuri | V9fsString fullname; |
1586 | 36f8981f | Venkateswararao Jujjuri | V9fsString name; |
1587 | 36f8981f | Venkateswararao Jujjuri | V9fsFidState *fidp; |
1588 | 36f8981f | Venkateswararao Jujjuri | struct stat stbuf;
|
1589 | 36f8981f | Venkateswararao Jujjuri | V9fsQID qid; |
1590 | 36f8981f | Venkateswararao Jujjuri | int32_t iounit; |
1591 | 36f8981f | Venkateswararao Jujjuri | V9fsPDU *pdu = opaque; |
1592 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1593 | 36f8981f | Venkateswararao Jujjuri | v9fs_string_init(&fullname); |
1594 | 36f8981f | Venkateswararao Jujjuri | pdu_unmarshal(pdu, offset, "dsddd", &dfid, &name, &flags,
|
1595 | 36f8981f | Venkateswararao Jujjuri | &mode, &gid); |
1596 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1597 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(pdu->s, dfid); |
1598 | 36f8981f | Venkateswararao Jujjuri | if (fidp == NULL) { |
1599 | c1568af5 | Venkateswararao Jujjuri (JV) | err = -ENOENT; |
1600 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1601 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1602 | 36f8981f | Venkateswararao Jujjuri | v9fs_string_sprintf(&fullname, "%s/%s", fidp->path.data, name.data);
|
1603 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1604 | 0f8151cb | Venkateswararao Jujjuri (JV) | /* Ignore direct disk access hint until the server supports it. */
|
1605 | 0f8151cb | Venkateswararao Jujjuri (JV) | flags &= ~O_DIRECT; |
1606 | 0f8151cb | Venkateswararao Jujjuri (JV) | |
1607 | 36f8981f | Venkateswararao Jujjuri | err = v9fs_co_open2(pdu->s, fidp, fullname.data, gid, flags, mode); |
1608 | 36f8981f | Venkateswararao Jujjuri | if (err < 0) { |
1609 | 36f8981f | Venkateswararao Jujjuri | goto out;
|
1610 | 36f8981f | Venkateswararao Jujjuri | } |
1611 | 36f8981f | Venkateswararao Jujjuri | fidp->fid_type = P9_FID_FILE; |
1612 | 7a462745 | Aneesh Kumar K.V | fidp->open_flags = flags; |
1613 | 7a462745 | Aneesh Kumar K.V | if (flags & O_EXCL) {
|
1614 | 7a462745 | Aneesh Kumar K.V | /*
|
1615 | 7a462745 | Aneesh Kumar K.V | * We let the host file system do O_EXCL check
|
1616 | 7a462745 | Aneesh Kumar K.V | * We should not reclaim such fd
|
1617 | 7a462745 | Aneesh Kumar K.V | */
|
1618 | 7a462745 | Aneesh Kumar K.V | fidp->flags |= FID_NON_RECLAIMABLE; |
1619 | 7a462745 | Aneesh Kumar K.V | } |
1620 | 36f8981f | Venkateswararao Jujjuri | iounit = get_iounit(pdu->s, &fullname); |
1621 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1622 | 36f8981f | Venkateswararao Jujjuri | err = v9fs_co_lstat(pdu->s, &fullname, &stbuf); |
1623 | 36f8981f | Venkateswararao Jujjuri | if (err < 0) { |
1624 | 36f8981f | Venkateswararao Jujjuri | fidp->fid_type = P9_FID_NONE; |
1625 | 36f8981f | Venkateswararao Jujjuri | if (fidp->fs.fd > 0) { |
1626 | 9b54ffaa | Aneesh Kumar K.V | v9fs_co_close(pdu->s, fidp->fs.fd); |
1627 | 36f8981f | Venkateswararao Jujjuri | } |
1628 | 36f8981f | Venkateswararao Jujjuri | goto out;
|
1629 | 36f8981f | Venkateswararao Jujjuri | } |
1630 | 36f8981f | Venkateswararao Jujjuri | v9fs_string_copy(&fidp->path, &fullname); |
1631 | 36f8981f | Venkateswararao Jujjuri | stat_to_qid(&stbuf, &qid); |
1632 | 36f8981f | Venkateswararao Jujjuri | offset += pdu_marshal(pdu, offset, "Qd", &qid, iounit);
|
1633 | 36f8981f | Venkateswararao Jujjuri | err = offset; |
1634 | c1568af5 | Venkateswararao Jujjuri (JV) | out:
|
1635 | 84dfb926 | Aneesh Kumar K.V | put_fid(pdu->s, fidp); |
1636 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1637 | 36f8981f | Venkateswararao Jujjuri | complete_pdu(pdu->s, pdu, err); |
1638 | 36f8981f | Venkateswararao Jujjuri | v9fs_string_free(&name); |
1639 | 36f8981f | Venkateswararao Jujjuri | v9fs_string_free(&fullname); |
1640 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1641 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1642 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_fsync(void *opaque) |
1643 | b41e95d3 | Venkateswararao Jujjuri (JV) | { |
1644 | 4e9ad444 | Aneesh Kumar K.V | int err;
|
1645 | b41e95d3 | Venkateswararao Jujjuri (JV) | int32_t fid; |
1646 | 4e9ad444 | Aneesh Kumar K.V | int datasync;
|
1647 | b41e95d3 | Venkateswararao Jujjuri (JV) | size_t offset = 7;
|
1648 | b41e95d3 | Venkateswararao Jujjuri (JV) | V9fsFidState *fidp; |
1649 | 4e9ad444 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
1650 | 4e9ad444 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1651 | b41e95d3 | Venkateswararao Jujjuri (JV) | |
1652 | 49594973 | Venkateswararao Jujjuri (JV) | pdu_unmarshal(pdu, offset, "dd", &fid, &datasync);
|
1653 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(s, fid); |
1654 | b41e95d3 | Venkateswararao Jujjuri (JV) | if (fidp == NULL) { |
1655 | b41e95d3 | Venkateswararao Jujjuri (JV) | err = -ENOENT; |
1656 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1657 | b41e95d3 | Venkateswararao Jujjuri (JV) | } |
1658 | 4e9ad444 | Aneesh Kumar K.V | err = v9fs_co_fsync(s, fidp, datasync); |
1659 | 4e9ad444 | Aneesh Kumar K.V | if (!err) {
|
1660 | 4e9ad444 | Aneesh Kumar K.V | err = offset; |
1661 | 4e9ad444 | Aneesh Kumar K.V | } |
1662 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
1663 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1664 | 4e9ad444 | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
1665 | b41e95d3 | Venkateswararao Jujjuri (JV) | } |
1666 | b41e95d3 | Venkateswararao Jujjuri (JV) | |
1667 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_clunk(void *opaque) |
1668 | a6568fe2 | Anthony Liguori | { |
1669 | c540ee51 | Aneesh Kumar K.V | int err;
|
1670 | bbd5697b | Anthony Liguori | int32_t fid; |
1671 | bbd5697b | Anthony Liguori | size_t offset = 7;
|
1672 | 84dfb926 | Aneesh Kumar K.V | V9fsFidState *fidp; |
1673 | c540ee51 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
1674 | c540ee51 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1675 | bbd5697b | Anthony Liguori | |
1676 | bbd5697b | Anthony Liguori | pdu_unmarshal(pdu, offset, "d", &fid);
|
1677 | 84dfb926 | Aneesh Kumar K.V | |
1678 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(s, fid); |
1679 | 84dfb926 | Aneesh Kumar K.V | if (fidp == NULL) { |
1680 | 84dfb926 | Aneesh Kumar K.V | err = -ENOENT; |
1681 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1682 | 84dfb926 | Aneesh Kumar K.V | } |
1683 | 84dfb926 | Aneesh Kumar K.V | err = clunk_fid(s, fidp->fid); |
1684 | bbd5697b | Anthony Liguori | if (err < 0) { |
1685 | bbd5697b | Anthony Liguori | goto out;
|
1686 | a6568fe2 | Anthony Liguori | } |
1687 | bbd5697b | Anthony Liguori | err = offset; |
1688 | bbd5697b | Anthony Liguori | out:
|
1689 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
1690 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1691 | bbd5697b | Anthony Liguori | complete_pdu(s, pdu, err); |
1692 | 9f107513 | Anthony Liguori | } |
1693 | 9f107513 | Anthony Liguori | |
1694 | d208a0e0 | Aneesh Kumar K.V | static int v9fs_xattr_read(V9fsState *s, V9fsPDU *pdu, |
1695 | d208a0e0 | Aneesh Kumar K.V | V9fsFidState *fidp, int64_t off, int32_t max_count) |
1696 | a9231555 | Anthony Liguori | { |
1697 | d208a0e0 | Aneesh Kumar K.V | size_t offset = 7;
|
1698 | d208a0e0 | Aneesh Kumar K.V | int read_count;
|
1699 | d208a0e0 | Aneesh Kumar K.V | int64_t xattr_len; |
1700 | a9231555 | Anthony Liguori | |
1701 | d208a0e0 | Aneesh Kumar K.V | xattr_len = fidp->fs.xattr.len; |
1702 | d208a0e0 | Aneesh Kumar K.V | read_count = xattr_len - off; |
1703 | d208a0e0 | Aneesh Kumar K.V | if (read_count > max_count) {
|
1704 | d208a0e0 | Aneesh Kumar K.V | read_count = max_count; |
1705 | d208a0e0 | Aneesh Kumar K.V | } else if (read_count < 0) { |
1706 | d208a0e0 | Aneesh Kumar K.V | /*
|
1707 | d208a0e0 | Aneesh Kumar K.V | * read beyond XATTR value
|
1708 | d208a0e0 | Aneesh Kumar K.V | */
|
1709 | d208a0e0 | Aneesh Kumar K.V | read_count = 0;
|
1710 | a9231555 | Anthony Liguori | } |
1711 | d208a0e0 | Aneesh Kumar K.V | offset += pdu_marshal(pdu, offset, "d", read_count);
|
1712 | d208a0e0 | Aneesh Kumar K.V | offset += pdu_pack(pdu, offset, |
1713 | d208a0e0 | Aneesh Kumar K.V | ((char *)fidp->fs.xattr.value) + off,
|
1714 | d208a0e0 | Aneesh Kumar K.V | read_count); |
1715 | d208a0e0 | Aneesh Kumar K.V | return offset;
|
1716 | a9231555 | Anthony Liguori | } |
1717 | a9231555 | Anthony Liguori | |
1718 | d208a0e0 | Aneesh Kumar K.V | static int v9fs_do_readdir_with_stat(V9fsState *s, V9fsPDU *pdu, |
1719 | d208a0e0 | Aneesh Kumar K.V | V9fsFidState *fidp, int32_t max_count) |
1720 | a9231555 | Anthony Liguori | { |
1721 | d208a0e0 | Aneesh Kumar K.V | V9fsString name; |
1722 | d208a0e0 | Aneesh Kumar K.V | V9fsStat v9stat; |
1723 | d208a0e0 | Aneesh Kumar K.V | int len, err = 0; |
1724 | d208a0e0 | Aneesh Kumar K.V | int32_t count = 0;
|
1725 | d208a0e0 | Aneesh Kumar K.V | struct stat stbuf;
|
1726 | d208a0e0 | Aneesh Kumar K.V | off_t saved_dir_pos; |
1727 | 5f524c1e | Harsh Prateek Bora | struct dirent *dent, *result;
|
1728 | a9231555 | Anthony Liguori | |
1729 | d208a0e0 | Aneesh Kumar K.V | /* save the directory position */
|
1730 | d208a0e0 | Aneesh Kumar K.V | saved_dir_pos = v9fs_co_telldir(s, fidp); |
1731 | d208a0e0 | Aneesh Kumar K.V | if (saved_dir_pos < 0) { |
1732 | d208a0e0 | Aneesh Kumar K.V | return saved_dir_pos;
|
1733 | a9231555 | Anthony Liguori | } |
1734 | 5f524c1e | Harsh Prateek Bora | |
1735 | 5f524c1e | Harsh Prateek Bora | dent = g_malloc(sizeof(struct dirent)); |
1736 | 5f524c1e | Harsh Prateek Bora | |
1737 | d208a0e0 | Aneesh Kumar K.V | while (1) { |
1738 | d208a0e0 | Aneesh Kumar K.V | v9fs_string_init(&name); |
1739 | 5f524c1e | Harsh Prateek Bora | err = v9fs_co_readdir_r(s, fidp, dent, &result); |
1740 | 5f524c1e | Harsh Prateek Bora | if (err || !result) {
|
1741 | d208a0e0 | Aneesh Kumar K.V | break;
|
1742 | d208a0e0 | Aneesh Kumar K.V | } |
1743 | d208a0e0 | Aneesh Kumar K.V | v9fs_string_sprintf(&name, "%s/%s", fidp->path.data, dent->d_name);
|
1744 | d208a0e0 | Aneesh Kumar K.V | err = v9fs_co_lstat(s, &name, &stbuf); |
1745 | d208a0e0 | Aneesh Kumar K.V | if (err < 0) { |
1746 | d208a0e0 | Aneesh Kumar K.V | goto out;
|
1747 | d208a0e0 | Aneesh Kumar K.V | } |
1748 | d208a0e0 | Aneesh Kumar K.V | err = stat_to_v9stat(s, &name, &stbuf, &v9stat); |
1749 | d208a0e0 | Aneesh Kumar K.V | if (err < 0) { |
1750 | d208a0e0 | Aneesh Kumar K.V | goto out;
|
1751 | a9231555 | Anthony Liguori | } |
1752 | d208a0e0 | Aneesh Kumar K.V | /* 11 = 7 + 4 (7 = start offset, 4 = space for storing count) */
|
1753 | d208a0e0 | Aneesh Kumar K.V | len = pdu_marshal(pdu, 11 + count, "S", &v9stat); |
1754 | d208a0e0 | Aneesh Kumar K.V | if ((len != (v9stat.size + 2)) || ((count + len) > max_count)) { |
1755 | d208a0e0 | Aneesh Kumar K.V | /* Ran out of buffer. Set dir back to old position and return */
|
1756 | d208a0e0 | Aneesh Kumar K.V | v9fs_co_seekdir(s, fidp, saved_dir_pos); |
1757 | d208a0e0 | Aneesh Kumar K.V | v9fs_stat_free(&v9stat); |
1758 | d208a0e0 | Aneesh Kumar K.V | v9fs_string_free(&name); |
1759 | 5f524c1e | Harsh Prateek Bora | g_free(dent); |
1760 | d208a0e0 | Aneesh Kumar K.V | return count;
|
1761 | d208a0e0 | Aneesh Kumar K.V | } |
1762 | d208a0e0 | Aneesh Kumar K.V | count += len; |
1763 | d208a0e0 | Aneesh Kumar K.V | v9fs_stat_free(&v9stat); |
1764 | d208a0e0 | Aneesh Kumar K.V | v9fs_string_free(&name); |
1765 | d208a0e0 | Aneesh Kumar K.V | saved_dir_pos = dent->d_off; |
1766 | a9231555 | Anthony Liguori | } |
1767 | a9231555 | Anthony Liguori | out:
|
1768 | 5f524c1e | Harsh Prateek Bora | g_free(dent); |
1769 | d208a0e0 | Aneesh Kumar K.V | v9fs_string_free(&name); |
1770 | d208a0e0 | Aneesh Kumar K.V | if (err < 0) { |
1771 | d208a0e0 | Aneesh Kumar K.V | return err;
|
1772 | fa32ef88 | Aneesh Kumar K.V | } |
1773 | d208a0e0 | Aneesh Kumar K.V | return count;
|
1774 | fa32ef88 | Aneesh Kumar K.V | } |
1775 | fa32ef88 | Aneesh Kumar K.V | |
1776 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_read(void *opaque) |
1777 | 9f107513 | Anthony Liguori | { |
1778 | a9231555 | Anthony Liguori | int32_t fid; |
1779 | d208a0e0 | Aneesh Kumar K.V | int64_t off; |
1780 | a9231555 | Anthony Liguori | ssize_t err = 0;
|
1781 | d208a0e0 | Aneesh Kumar K.V | int32_t count = 0;
|
1782 | d208a0e0 | Aneesh Kumar K.V | size_t offset = 7;
|
1783 | d208a0e0 | Aneesh Kumar K.V | int32_t max_count; |
1784 | d208a0e0 | Aneesh Kumar K.V | V9fsFidState *fidp; |
1785 | d208a0e0 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
1786 | d208a0e0 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1787 | a9231555 | Anthony Liguori | |
1788 | d208a0e0 | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "dqd", &fid, &off, &max_count);
|
1789 | 84dfb926 | Aneesh Kumar K.V | |
1790 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(s, fid); |
1791 | d208a0e0 | Aneesh Kumar K.V | if (fidp == NULL) { |
1792 | a9231555 | Anthony Liguori | err = -EINVAL; |
1793 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1794 | a9231555 | Anthony Liguori | } |
1795 | d208a0e0 | Aneesh Kumar K.V | if (fidp->fid_type == P9_FID_DIR) {
|
1796 | a9231555 | Anthony Liguori | |
1797 | d208a0e0 | Aneesh Kumar K.V | if (off == 0) { |
1798 | d208a0e0 | Aneesh Kumar K.V | v9fs_co_rewinddir(s, fidp); |
1799 | a9231555 | Anthony Liguori | } |
1800 | d208a0e0 | Aneesh Kumar K.V | count = v9fs_do_readdir_with_stat(s, pdu, fidp, max_count); |
1801 | d208a0e0 | Aneesh Kumar K.V | if (count < 0) { |
1802 | d208a0e0 | Aneesh Kumar K.V | err = count; |
1803 | d208a0e0 | Aneesh Kumar K.V | goto out;
|
1804 | 56d15a53 | Sanchit Garg | } |
1805 | d208a0e0 | Aneesh Kumar K.V | err = offset; |
1806 | d208a0e0 | Aneesh Kumar K.V | err += pdu_marshal(pdu, offset, "d", count);
|
1807 | d208a0e0 | Aneesh Kumar K.V | err += count; |
1808 | d208a0e0 | Aneesh Kumar K.V | } else if (fidp->fid_type == P9_FID_FILE) { |
1809 | d208a0e0 | Aneesh Kumar K.V | int32_t cnt; |
1810 | d208a0e0 | Aneesh Kumar K.V | int32_t len; |
1811 | d208a0e0 | Aneesh Kumar K.V | struct iovec *sg;
|
1812 | d208a0e0 | Aneesh Kumar K.V | struct iovec iov[128]; /* FIXME: bad, bad, bad */ |
1813 | d208a0e0 | Aneesh Kumar K.V | |
1814 | d208a0e0 | Aneesh Kumar K.V | sg = iov; |
1815 | d208a0e0 | Aneesh Kumar K.V | pdu_marshal(pdu, offset + 4, "v", sg, &cnt); |
1816 | d208a0e0 | Aneesh Kumar K.V | sg = cap_sg(sg, max_count, &cnt); |
1817 | d208a0e0 | Aneesh Kumar K.V | do {
|
1818 | d208a0e0 | Aneesh Kumar K.V | if (0) { |
1819 | d208a0e0 | Aneesh Kumar K.V | print_sg(sg, cnt); |
1820 | d208a0e0 | Aneesh Kumar K.V | } |
1821 | d208a0e0 | Aneesh Kumar K.V | /* Loop in case of EINTR */
|
1822 | d208a0e0 | Aneesh Kumar K.V | do {
|
1823 | d208a0e0 | Aneesh Kumar K.V | len = v9fs_co_preadv(s, fidp, sg, cnt, off); |
1824 | d208a0e0 | Aneesh Kumar K.V | if (len >= 0) { |
1825 | d208a0e0 | Aneesh Kumar K.V | off += len; |
1826 | d208a0e0 | Aneesh Kumar K.V | count += len; |
1827 | d208a0e0 | Aneesh Kumar K.V | } |
1828 | d208a0e0 | Aneesh Kumar K.V | } while (len == -EINTR);
|
1829 | d208a0e0 | Aneesh Kumar K.V | if (len < 0) { |
1830 | d208a0e0 | Aneesh Kumar K.V | /* IO error return the error */
|
1831 | d208a0e0 | Aneesh Kumar K.V | err = len; |
1832 | d208a0e0 | Aneesh Kumar K.V | goto out;
|
1833 | d208a0e0 | Aneesh Kumar K.V | } |
1834 | d208a0e0 | Aneesh Kumar K.V | sg = adjust_sg(sg, len, &cnt); |
1835 | d208a0e0 | Aneesh Kumar K.V | } while (count < max_count && len > 0); |
1836 | d208a0e0 | Aneesh Kumar K.V | err = offset; |
1837 | d208a0e0 | Aneesh Kumar K.V | err += pdu_marshal(pdu, offset, "d", count);
|
1838 | d208a0e0 | Aneesh Kumar K.V | err += count; |
1839 | d208a0e0 | Aneesh Kumar K.V | } else if (fidp->fid_type == P9_FID_XATTR) { |
1840 | d208a0e0 | Aneesh Kumar K.V | err = v9fs_xattr_read(s, pdu, fidp, off, max_count); |
1841 | a9231555 | Anthony Liguori | } else {
|
1842 | a9231555 | Anthony Liguori | err = -EINVAL; |
1843 | 9f107513 | Anthony Liguori | } |
1844 | a9231555 | Anthony Liguori | out:
|
1845 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
1846 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1847 | a9231555 | Anthony Liguori | complete_pdu(s, pdu, err); |
1848 | 9f107513 | Anthony Liguori | } |
1849 | 9f107513 | Anthony Liguori | |
1850 | 5e4eaa79 | Aneesh Kumar K.V | static size_t v9fs_readdir_data_size(V9fsString *name)
|
1851 | c18e2f94 | Sripathi Kodi | { |
1852 | 5e4eaa79 | Aneesh Kumar K.V | /*
|
1853 | 5e4eaa79 | Aneesh Kumar K.V | * Size of each dirent on the wire: size of qid (13) + size of offset (8)
|
1854 | 5e4eaa79 | Aneesh Kumar K.V | * size of type (1) + size of name.size (2) + strlen(name.data)
|
1855 | 5e4eaa79 | Aneesh Kumar K.V | */
|
1856 | 5e4eaa79 | Aneesh Kumar K.V | return 24 + v9fs_string_size(name); |
1857 | c18e2f94 | Sripathi Kodi | } |
1858 | c18e2f94 | Sripathi Kodi | |
1859 | 5e4eaa79 | Aneesh Kumar K.V | static int v9fs_do_readdir(V9fsState *s, V9fsPDU *pdu, |
1860 | 5e4eaa79 | Aneesh Kumar K.V | V9fsFidState *fidp, int32_t max_count) |
1861 | c18e2f94 | Sripathi Kodi | { |
1862 | c18e2f94 | Sripathi Kodi | size_t size; |
1863 | 5e4eaa79 | Aneesh Kumar K.V | V9fsQID qid; |
1864 | 5e4eaa79 | Aneesh Kumar K.V | V9fsString name; |
1865 | 5e4eaa79 | Aneesh Kumar K.V | int len, err = 0; |
1866 | 5e4eaa79 | Aneesh Kumar K.V | int32_t count = 0;
|
1867 | 5e4eaa79 | Aneesh Kumar K.V | off_t saved_dir_pos; |
1868 | 5f524c1e | Harsh Prateek Bora | struct dirent *dent, *result;
|
1869 | c18e2f94 | Sripathi Kodi | |
1870 | 5e4eaa79 | Aneesh Kumar K.V | /* save the directory position */
|
1871 | 5e4eaa79 | Aneesh Kumar K.V | saved_dir_pos = v9fs_co_telldir(s, fidp); |
1872 | 5e4eaa79 | Aneesh Kumar K.V | if (saved_dir_pos < 0) { |
1873 | 5e4eaa79 | Aneesh Kumar K.V | return saved_dir_pos;
|
1874 | 5e4eaa79 | Aneesh Kumar K.V | } |
1875 | 5f524c1e | Harsh Prateek Bora | |
1876 | 5f524c1e | Harsh Prateek Bora | dent = g_malloc(sizeof(struct dirent)); |
1877 | 5f524c1e | Harsh Prateek Bora | |
1878 | 5e4eaa79 | Aneesh Kumar K.V | while (1) { |
1879 | 5f524c1e | Harsh Prateek Bora | err = v9fs_co_readdir_r(s, fidp, dent, &result); |
1880 | 5f524c1e | Harsh Prateek Bora | if (err || !result) {
|
1881 | 5e4eaa79 | Aneesh Kumar K.V | break;
|
1882 | 5e4eaa79 | Aneesh Kumar K.V | } |
1883 | 5e4eaa79 | Aneesh Kumar K.V | v9fs_string_init(&name); |
1884 | 5e4eaa79 | Aneesh Kumar K.V | v9fs_string_sprintf(&name, "%s", dent->d_name);
|
1885 | 5e4eaa79 | Aneesh Kumar K.V | if ((count + v9fs_readdir_data_size(&name)) > max_count) {
|
1886 | c18e2f94 | Sripathi Kodi | /* Ran out of buffer. Set dir back to old position and return */
|
1887 | 5e4eaa79 | Aneesh Kumar K.V | v9fs_co_seekdir(s, fidp, saved_dir_pos); |
1888 | 5e4eaa79 | Aneesh Kumar K.V | v9fs_string_free(&name); |
1889 | 5f524c1e | Harsh Prateek Bora | g_free(dent); |
1890 | 5e4eaa79 | Aneesh Kumar K.V | return count;
|
1891 | c18e2f94 | Sripathi Kodi | } |
1892 | 5e4eaa79 | Aneesh Kumar K.V | /*
|
1893 | 5e4eaa79 | Aneesh Kumar K.V | * Fill up just the path field of qid because the client uses
|
1894 | c18e2f94 | Sripathi Kodi | * only that. To fill the entire qid structure we will have
|
1895 | c18e2f94 | Sripathi Kodi | * to stat each dirent found, which is expensive
|
1896 | c18e2f94 | Sripathi Kodi | */
|
1897 | 5e4eaa79 | Aneesh Kumar K.V | size = MIN(sizeof(dent->d_ino), sizeof(qid.path)); |
1898 | 5e4eaa79 | Aneesh Kumar K.V | memcpy(&qid.path, &dent->d_ino, size); |
1899 | c18e2f94 | Sripathi Kodi | /* Fill the other fields with dummy values */
|
1900 | 5e4eaa79 | Aneesh Kumar K.V | qid.type = 0;
|
1901 | 5e4eaa79 | Aneesh Kumar K.V | qid.version = 0;
|
1902 | c18e2f94 | Sripathi Kodi | |
1903 | 5e4eaa79 | Aneesh Kumar K.V | /* 11 = 7 + 4 (7 = start offset, 4 = space for storing count) */
|
1904 | 5e4eaa79 | Aneesh Kumar K.V | len = pdu_marshal(pdu, 11 + count, "Qqbs", |
1905 | 5e4eaa79 | Aneesh Kumar K.V | &qid, dent->d_off, |
1906 | 5e4eaa79 | Aneesh Kumar K.V | dent->d_type, &name); |
1907 | 5e4eaa79 | Aneesh Kumar K.V | count += len; |
1908 | 5e4eaa79 | Aneesh Kumar K.V | v9fs_string_free(&name); |
1909 | 5e4eaa79 | Aneesh Kumar K.V | saved_dir_pos = dent->d_off; |
1910 | 5e4eaa79 | Aneesh Kumar K.V | } |
1911 | 5f524c1e | Harsh Prateek Bora | g_free(dent); |
1912 | 5e4eaa79 | Aneesh Kumar K.V | if (err < 0) { |
1913 | 5e4eaa79 | Aneesh Kumar K.V | return err;
|
1914 | 5e4eaa79 | Aneesh Kumar K.V | } |
1915 | 5e4eaa79 | Aneesh Kumar K.V | return count;
|
1916 | c18e2f94 | Sripathi Kodi | } |
1917 | c18e2f94 | Sripathi Kodi | |
1918 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_readdir(void *opaque) |
1919 | c18e2f94 | Sripathi Kodi | { |
1920 | c18e2f94 | Sripathi Kodi | int32_t fid; |
1921 | 5e4eaa79 | Aneesh Kumar K.V | V9fsFidState *fidp; |
1922 | 5e4eaa79 | Aneesh Kumar K.V | ssize_t retval = 0;
|
1923 | c18e2f94 | Sripathi Kodi | size_t offset = 7;
|
1924 | 5e4eaa79 | Aneesh Kumar K.V | int64_t initial_offset; |
1925 | 5e4eaa79 | Aneesh Kumar K.V | int32_t count, max_count; |
1926 | 5e4eaa79 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
1927 | 5e4eaa79 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
1928 | c18e2f94 | Sripathi Kodi | |
1929 | 5e4eaa79 | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "dqd", &fid, &initial_offset, &max_count);
|
1930 | c18e2f94 | Sripathi Kodi | |
1931 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(s, fid); |
1932 | 84dfb926 | Aneesh Kumar K.V | if (fidp == NULL) { |
1933 | 84dfb926 | Aneesh Kumar K.V | retval = -EINVAL; |
1934 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
1935 | 84dfb926 | Aneesh Kumar K.V | } |
1936 | 84dfb926 | Aneesh Kumar K.V | if (!fidp->fs.dir) {
|
1937 | 5e4eaa79 | Aneesh Kumar K.V | retval = -EINVAL; |
1938 | c18e2f94 | Sripathi Kodi | goto out;
|
1939 | c18e2f94 | Sripathi Kodi | } |
1940 | 5e4eaa79 | Aneesh Kumar K.V | if (initial_offset == 0) { |
1941 | 5e4eaa79 | Aneesh Kumar K.V | v9fs_co_rewinddir(s, fidp); |
1942 | c18e2f94 | Sripathi Kodi | } else {
|
1943 | 5e4eaa79 | Aneesh Kumar K.V | v9fs_co_seekdir(s, fidp, initial_offset); |
1944 | c18e2f94 | Sripathi Kodi | } |
1945 | 5e4eaa79 | Aneesh Kumar K.V | count = v9fs_do_readdir(s, pdu, fidp, max_count); |
1946 | 5e4eaa79 | Aneesh Kumar K.V | if (count < 0) { |
1947 | 5e4eaa79 | Aneesh Kumar K.V | retval = count; |
1948 | 5e4eaa79 | Aneesh Kumar K.V | goto out;
|
1949 | 5e4eaa79 | Aneesh Kumar K.V | } |
1950 | 5e4eaa79 | Aneesh Kumar K.V | retval = offset; |
1951 | 5e4eaa79 | Aneesh Kumar K.V | retval += pdu_marshal(pdu, offset, "d", count);
|
1952 | 5e4eaa79 | Aneesh Kumar K.V | retval += count; |
1953 | c18e2f94 | Sripathi Kodi | out:
|
1954 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
1955 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
1956 | 5e4eaa79 | Aneesh Kumar K.V | complete_pdu(s, pdu, retval); |
1957 | c18e2f94 | Sripathi Kodi | } |
1958 | c18e2f94 | Sripathi Kodi | |
1959 | d7a90491 | Aneesh Kumar K.V | static int v9fs_xattr_write(V9fsState *s, V9fsPDU *pdu, V9fsFidState *fidp, |
1960 | d7a90491 | Aneesh Kumar K.V | int64_t off, int32_t count, |
1961 | d7a90491 | Aneesh Kumar K.V | struct iovec *sg, int cnt) |
1962 | 10b468bd | Aneesh Kumar K.V | { |
1963 | 10b468bd | Aneesh Kumar K.V | int i, to_copy;
|
1964 | 10b468bd | Aneesh Kumar K.V | ssize_t err = 0;
|
1965 | 10b468bd | Aneesh Kumar K.V | int write_count;
|
1966 | 10b468bd | Aneesh Kumar K.V | int64_t xattr_len; |
1967 | d7a90491 | Aneesh Kumar K.V | size_t offset = 7;
|
1968 | 10b468bd | Aneesh Kumar K.V | |
1969 | d7a90491 | Aneesh Kumar K.V | |
1970 | d7a90491 | Aneesh Kumar K.V | xattr_len = fidp->fs.xattr.len; |
1971 | d7a90491 | Aneesh Kumar K.V | write_count = xattr_len - off; |
1972 | d7a90491 | Aneesh Kumar K.V | if (write_count > count) {
|
1973 | d7a90491 | Aneesh Kumar K.V | write_count = count; |
1974 | 10b468bd | Aneesh Kumar K.V | } else if (write_count < 0) { |
1975 | 10b468bd | Aneesh Kumar K.V | /*
|
1976 | 10b468bd | Aneesh Kumar K.V | * write beyond XATTR value len specified in
|
1977 | 10b468bd | Aneesh Kumar K.V | * xattrcreate
|
1978 | 10b468bd | Aneesh Kumar K.V | */
|
1979 | 10b468bd | Aneesh Kumar K.V | err = -ENOSPC; |
1980 | 10b468bd | Aneesh Kumar K.V | goto out;
|
1981 | 10b468bd | Aneesh Kumar K.V | } |
1982 | d7a90491 | Aneesh Kumar K.V | offset += pdu_marshal(pdu, offset, "d", write_count);
|
1983 | d7a90491 | Aneesh Kumar K.V | err = offset; |
1984 | d7a90491 | Aneesh Kumar K.V | fidp->fs.xattr.copied_len += write_count; |
1985 | 10b468bd | Aneesh Kumar K.V | /*
|
1986 | 10b468bd | Aneesh Kumar K.V | * Now copy the content from sg list
|
1987 | 10b468bd | Aneesh Kumar K.V | */
|
1988 | d7a90491 | Aneesh Kumar K.V | for (i = 0; i < cnt; i++) { |
1989 | d7a90491 | Aneesh Kumar K.V | if (write_count > sg[i].iov_len) {
|
1990 | d7a90491 | Aneesh Kumar K.V | to_copy = sg[i].iov_len; |
1991 | 10b468bd | Aneesh Kumar K.V | } else {
|
1992 | 10b468bd | Aneesh Kumar K.V | to_copy = write_count; |
1993 | 10b468bd | Aneesh Kumar K.V | } |
1994 | d7a90491 | Aneesh Kumar K.V | memcpy((char *)fidp->fs.xattr.value + off, sg[i].iov_base, to_copy);
|
1995 | 10b468bd | Aneesh Kumar K.V | /* updating vs->off since we are not using below */
|
1996 | d7a90491 | Aneesh Kumar K.V | off += to_copy; |
1997 | 10b468bd | Aneesh Kumar K.V | write_count -= to_copy; |
1998 | 10b468bd | Aneesh Kumar K.V | } |
1999 | 10b468bd | Aneesh Kumar K.V | out:
|
2000 | d7a90491 | Aneesh Kumar K.V | return err;
|
2001 | 10b468bd | Aneesh Kumar K.V | } |
2002 | 10b468bd | Aneesh Kumar K.V | |
2003 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_write(void *opaque) |
2004 | 9f107513 | Anthony Liguori | { |
2005 | d7a90491 | Aneesh Kumar K.V | int cnt;
|
2006 | d7a90491 | Aneesh Kumar K.V | ssize_t err; |
2007 | d7a90491 | Aneesh Kumar K.V | int32_t fid; |
2008 | d7a90491 | Aneesh Kumar K.V | int64_t off; |
2009 | d7a90491 | Aneesh Kumar K.V | int32_t count; |
2010 | d7a90491 | Aneesh Kumar K.V | int32_t len = 0;
|
2011 | d7a90491 | Aneesh Kumar K.V | int32_t total = 0;
|
2012 | d7a90491 | Aneesh Kumar K.V | size_t offset = 7;
|
2013 | d7a90491 | Aneesh Kumar K.V | V9fsFidState *fidp; |
2014 | d7a90491 | Aneesh Kumar K.V | struct iovec iov[128]; /* FIXME: bad, bad, bad */ |
2015 | d7a90491 | Aneesh Kumar K.V | struct iovec *sg = iov;
|
2016 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
2017 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
2018 | 8449360c | Anthony Liguori | |
2019 | d7a90491 | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "dqdv", &fid, &off, &count, sg, &cnt);
|
2020 | 84dfb926 | Aneesh Kumar K.V | |
2021 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(s, fid); |
2022 | d7a90491 | Aneesh Kumar K.V | if (fidp == NULL) { |
2023 | 8449360c | Anthony Liguori | err = -EINVAL; |
2024 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2025 | 9f107513 | Anthony Liguori | } |
2026 | d7a90491 | Aneesh Kumar K.V | if (fidp->fid_type == P9_FID_FILE) {
|
2027 | d7a90491 | Aneesh Kumar K.V | if (fidp->fs.fd == -1) { |
2028 | 10b468bd | Aneesh Kumar K.V | err = -EINVAL; |
2029 | 10b468bd | Aneesh Kumar K.V | goto out;
|
2030 | 10b468bd | Aneesh Kumar K.V | } |
2031 | d7a90491 | Aneesh Kumar K.V | } else if (fidp->fid_type == P9_FID_XATTR) { |
2032 | 10b468bd | Aneesh Kumar K.V | /*
|
2033 | 10b468bd | Aneesh Kumar K.V | * setxattr operation
|
2034 | 10b468bd | Aneesh Kumar K.V | */
|
2035 | d7a90491 | Aneesh Kumar K.V | err = v9fs_xattr_write(s, pdu, fidp, off, count, sg, cnt); |
2036 | d7a90491 | Aneesh Kumar K.V | goto out;
|
2037 | 10b468bd | Aneesh Kumar K.V | } else {
|
2038 | 8449360c | Anthony Liguori | err = -EINVAL; |
2039 | 8449360c | Anthony Liguori | goto out;
|
2040 | 8449360c | Anthony Liguori | } |
2041 | d7a90491 | Aneesh Kumar K.V | sg = cap_sg(sg, count, &cnt); |
2042 | d7a90491 | Aneesh Kumar K.V | do {
|
2043 | d7a90491 | Aneesh Kumar K.V | if (0) { |
2044 | d7a90491 | Aneesh Kumar K.V | print_sg(sg, cnt); |
2045 | 56d15a53 | Sanchit Garg | } |
2046 | d7a90491 | Aneesh Kumar K.V | /* Loop in case of EINTR */
|
2047 | d7a90491 | Aneesh Kumar K.V | do {
|
2048 | d7a90491 | Aneesh Kumar K.V | len = v9fs_co_pwritev(s, fidp, sg, cnt, off); |
2049 | d7a90491 | Aneesh Kumar K.V | if (len >= 0) { |
2050 | d7a90491 | Aneesh Kumar K.V | off += len; |
2051 | d7a90491 | Aneesh Kumar K.V | total += len; |
2052 | d7a90491 | Aneesh Kumar K.V | } |
2053 | d7a90491 | Aneesh Kumar K.V | } while (len == -EINTR);
|
2054 | d7a90491 | Aneesh Kumar K.V | if (len < 0) { |
2055 | d7a90491 | Aneesh Kumar K.V | /* IO error return the error */
|
2056 | d7a90491 | Aneesh Kumar K.V | err = len; |
2057 | d7a90491 | Aneesh Kumar K.V | goto out;
|
2058 | d7a90491 | Aneesh Kumar K.V | } |
2059 | d7a90491 | Aneesh Kumar K.V | sg = adjust_sg(sg, len, &cnt); |
2060 | d7a90491 | Aneesh Kumar K.V | } while (total < count && len > 0); |
2061 | d7a90491 | Aneesh Kumar K.V | offset += pdu_marshal(pdu, offset, "d", total);
|
2062 | d7a90491 | Aneesh Kumar K.V | err = offset; |
2063 | 8449360c | Anthony Liguori | out:
|
2064 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
2065 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2066 | d7a90491 | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
2067 | 9f107513 | Anthony Liguori | } |
2068 | 9f107513 | Anthony Liguori | |
2069 | baaa86d9 | Venkateswararao Jujjuri | static void v9fs_create(void *opaque) |
2070 | 5e94c103 | M. Mohan Kumar | { |
2071 | baaa86d9 | Venkateswararao Jujjuri | int32_t fid; |
2072 | baaa86d9 | Venkateswararao Jujjuri | int err = 0; |
2073 | baaa86d9 | Venkateswararao Jujjuri | size_t offset = 7;
|
2074 | baaa86d9 | Venkateswararao Jujjuri | V9fsFidState *fidp; |
2075 | baaa86d9 | Venkateswararao Jujjuri | V9fsQID qid; |
2076 | baaa86d9 | Venkateswararao Jujjuri | int32_t perm; |
2077 | baaa86d9 | Venkateswararao Jujjuri | int8_t mode; |
2078 | baaa86d9 | Venkateswararao Jujjuri | struct stat stbuf;
|
2079 | baaa86d9 | Venkateswararao Jujjuri | V9fsString name; |
2080 | baaa86d9 | Venkateswararao Jujjuri | V9fsString extension; |
2081 | baaa86d9 | Venkateswararao Jujjuri | V9fsString fullname; |
2082 | baaa86d9 | Venkateswararao Jujjuri | int iounit;
|
2083 | baaa86d9 | Venkateswararao Jujjuri | V9fsPDU *pdu = opaque; |
2084 | c494dd6f | Anthony Liguori | |
2085 | baaa86d9 | Venkateswararao Jujjuri | v9fs_string_init(&fullname); |
2086 | c494dd6f | Anthony Liguori | |
2087 | baaa86d9 | Venkateswararao Jujjuri | pdu_unmarshal(pdu, offset, "dsdbs", &fid, &name,
|
2088 | baaa86d9 | Venkateswararao Jujjuri | &perm, &mode, &extension); |
2089 | c494dd6f | Anthony Liguori | |
2090 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(pdu->s, fid); |
2091 | baaa86d9 | Venkateswararao Jujjuri | if (fidp == NULL) { |
2092 | baaa86d9 | Venkateswararao Jujjuri | err = -EINVAL; |
2093 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2094 | c494dd6f | Anthony Liguori | } |
2095 | c494dd6f | Anthony Liguori | |
2096 | baaa86d9 | Venkateswararao Jujjuri | v9fs_string_sprintf(&fullname, "%s/%s", fidp->path.data, name.data);
|
2097 | baaa86d9 | Venkateswararao Jujjuri | err = v9fs_co_lstat(pdu->s, &fullname, &stbuf); |
2098 | baaa86d9 | Venkateswararao Jujjuri | if (!err) {
|
2099 | baaa86d9 | Venkateswararao Jujjuri | err = -EEXIST; |
2100 | c494dd6f | Anthony Liguori | goto out;
|
2101 | baaa86d9 | Venkateswararao Jujjuri | } else if (err != -ENOENT) { |
2102 | c494dd6f | Anthony Liguori | goto out;
|
2103 | c494dd6f | Anthony Liguori | } |
2104 | baaa86d9 | Venkateswararao Jujjuri | if (perm & P9_STAT_MODE_DIR) {
|
2105 | baaa86d9 | Venkateswararao Jujjuri | err = v9fs_co_mkdir(pdu->s, fullname.data, perm & 0777,
|
2106 | baaa86d9 | Venkateswararao Jujjuri | fidp->uid, -1);
|
2107 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2108 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2109 | baaa86d9 | Venkateswararao Jujjuri | } |
2110 | 407fee0f | Aneesh Kumar K.V | v9fs_string_copy(&fidp->path, &fullname); |
2111 | baaa86d9 | Venkateswararao Jujjuri | err = v9fs_co_opendir(pdu->s, fidp); |
2112 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2113 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2114 | baaa86d9 | Venkateswararao Jujjuri | } |
2115 | baaa86d9 | Venkateswararao Jujjuri | fidp->fid_type = P9_FID_DIR; |
2116 | baaa86d9 | Venkateswararao Jujjuri | } else if (perm & P9_STAT_MODE_SYMLINK) { |
2117 | 3fa2a8d1 | Venkateswararao Jujjuri | err = v9fs_co_symlink(pdu->s, fidp, extension.data, |
2118 | baaa86d9 | Venkateswararao Jujjuri | fullname.data, -1);
|
2119 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2120 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2121 | baaa86d9 | Venkateswararao Jujjuri | } |
2122 | baaa86d9 | Venkateswararao Jujjuri | } else if (perm & P9_STAT_MODE_LINK) { |
2123 | baaa86d9 | Venkateswararao Jujjuri | int32_t nfid = atoi(extension.data); |
2124 | 84dfb926 | Aneesh Kumar K.V | V9fsFidState *nfidp = get_fid(pdu->s, nfid); |
2125 | c494dd6f | Anthony Liguori | if (nfidp == NULL) { |
2126 | baaa86d9 | Venkateswararao Jujjuri | err = -EINVAL; |
2127 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2128 | baaa86d9 | Venkateswararao Jujjuri | } |
2129 | ffd66876 | Venkateswararao Jujjuri (JV) | err = v9fs_co_link(pdu->s, &nfidp->path, &fullname); |
2130 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2131 | 84dfb926 | Aneesh Kumar K.V | put_fid(pdu->s, nfidp); |
2132 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2133 | c494dd6f | Anthony Liguori | } |
2134 | 84dfb926 | Aneesh Kumar K.V | put_fid(pdu->s, nfidp); |
2135 | baaa86d9 | Venkateswararao Jujjuri | } else if (perm & P9_STAT_MODE_DEVICE) { |
2136 | c494dd6f | Anthony Liguori | char ctype;
|
2137 | c494dd6f | Anthony Liguori | uint32_t major, minor; |
2138 | c494dd6f | Anthony Liguori | mode_t nmode = 0;
|
2139 | c494dd6f | Anthony Liguori | |
2140 | baaa86d9 | Venkateswararao Jujjuri | if (sscanf(extension.data, "%c %u %u", &ctype, &major, &minor) != 3) { |
2141 | c494dd6f | Anthony Liguori | err = -errno; |
2142 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2143 | c494dd6f | Anthony Liguori | } |
2144 | c494dd6f | Anthony Liguori | |
2145 | c494dd6f | Anthony Liguori | switch (ctype) {
|
2146 | c494dd6f | Anthony Liguori | case 'c': |
2147 | c494dd6f | Anthony Liguori | nmode = S_IFCHR; |
2148 | c494dd6f | Anthony Liguori | break;
|
2149 | c494dd6f | Anthony Liguori | case 'b': |
2150 | c494dd6f | Anthony Liguori | nmode = S_IFBLK; |
2151 | c494dd6f | Anthony Liguori | break;
|
2152 | c494dd6f | Anthony Liguori | default:
|
2153 | c494dd6f | Anthony Liguori | err = -EIO; |
2154 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2155 | baaa86d9 | Venkateswararao Jujjuri | } |
2156 | c1568af5 | Venkateswararao Jujjuri (JV) | |
2157 | baaa86d9 | Venkateswararao Jujjuri | nmode |= perm & 0777;
|
2158 | baaa86d9 | Venkateswararao Jujjuri | err = v9fs_co_mknod(pdu->s, &fullname, fidp->uid, -1,
|
2159 | baaa86d9 | Venkateswararao Jujjuri | makedev(major, minor), nmode); |
2160 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2161 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2162 | baaa86d9 | Venkateswararao Jujjuri | } |
2163 | baaa86d9 | Venkateswararao Jujjuri | } else if (perm & P9_STAT_MODE_NAMED_PIPE) { |
2164 | baaa86d9 | Venkateswararao Jujjuri | err = v9fs_co_mknod(pdu->s, &fullname, fidp->uid, -1,
|
2165 | baaa86d9 | Venkateswararao Jujjuri | 0, S_IFIFO | (perm & 0777)); |
2166 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2167 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2168 | baaa86d9 | Venkateswararao Jujjuri | } |
2169 | baaa86d9 | Venkateswararao Jujjuri | } else if (perm & P9_STAT_MODE_SOCKET) { |
2170 | baaa86d9 | Venkateswararao Jujjuri | err = v9fs_co_mknod(pdu->s, &fullname, fidp->uid, -1,
|
2171 | baaa86d9 | Venkateswararao Jujjuri | 0, S_IFSOCK | (perm & 0777)); |
2172 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2173 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2174 | baaa86d9 | Venkateswararao Jujjuri | } |
2175 | baaa86d9 | Venkateswararao Jujjuri | } else {
|
2176 | baaa86d9 | Venkateswararao Jujjuri | err = v9fs_co_open2(pdu->s, fidp, fullname.data, -1,
|
2177 | baaa86d9 | Venkateswararao Jujjuri | omode_to_uflags(mode)|O_CREAT, perm); |
2178 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2179 | baaa86d9 | Venkateswararao Jujjuri | goto out;
|
2180 | baaa86d9 | Venkateswararao Jujjuri | } |
2181 | baaa86d9 | Venkateswararao Jujjuri | fidp->fid_type = P9_FID_FILE; |
2182 | 7a462745 | Aneesh Kumar K.V | fidp->open_flags = omode_to_uflags(mode); |
2183 | 7a462745 | Aneesh Kumar K.V | if (fidp->open_flags & O_EXCL) {
|
2184 | 7a462745 | Aneesh Kumar K.V | /*
|
2185 | 7a462745 | Aneesh Kumar K.V | * We let the host file system do O_EXCL check
|
2186 | 7a462745 | Aneesh Kumar K.V | * We should not reclaim such fd
|
2187 | 7a462745 | Aneesh Kumar K.V | */
|
2188 | 7a462745 | Aneesh Kumar K.V | fidp->flags |= FID_NON_RECLAIMABLE; |
2189 | 7a462745 | Aneesh Kumar K.V | } |
2190 | c494dd6f | Anthony Liguori | } |
2191 | baaa86d9 | Venkateswararao Jujjuri | err = v9fs_co_lstat(pdu->s, &fullname, &stbuf); |
2192 | baaa86d9 | Venkateswararao Jujjuri | if (err < 0) { |
2193 | baaa86d9 | Venkateswararao Jujjuri | fidp->fid_type = P9_FID_NONE; |
2194 | baaa86d9 | Venkateswararao Jujjuri | if (fidp->fs.fd) {
|
2195 | 9b54ffaa | Aneesh Kumar K.V | v9fs_co_close(pdu->s, fidp->fs.fd); |
2196 | baaa86d9 | Venkateswararao Jujjuri | } |
2197 | c494dd6f | Anthony Liguori | goto out;
|
2198 | 9f107513 | Anthony Liguori | } |
2199 | baaa86d9 | Venkateswararao Jujjuri | iounit = get_iounit(pdu->s, &fidp->path); |
2200 | baaa86d9 | Venkateswararao Jujjuri | v9fs_string_copy(&fidp->path, &fullname); |
2201 | baaa86d9 | Venkateswararao Jujjuri | stat_to_qid(&stbuf, &qid); |
2202 | baaa86d9 | Venkateswararao Jujjuri | offset += pdu_marshal(pdu, offset, "Qd", &qid, iounit);
|
2203 | baaa86d9 | Venkateswararao Jujjuri | err = offset; |
2204 | c494dd6f | Anthony Liguori | out:
|
2205 | 84dfb926 | Aneesh Kumar K.V | put_fid(pdu->s, fidp); |
2206 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2207 | baaa86d9 | Venkateswararao Jujjuri | complete_pdu(pdu->s, pdu, err); |
2208 | baaa86d9 | Venkateswararao Jujjuri | v9fs_string_free(&name); |
2209 | baaa86d9 | Venkateswararao Jujjuri | v9fs_string_free(&extension); |
2210 | baaa86d9 | Venkateswararao Jujjuri | v9fs_string_free(&fullname); |
2211 | 9f107513 | Anthony Liguori | } |
2212 | 9f107513 | Anthony Liguori | |
2213 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_symlink(void *opaque) |
2214 | 08c60fc9 | Venkateswararao Jujjuri (JV) | { |
2215 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
2216 | 3fa2a8d1 | Venkateswararao Jujjuri | V9fsString name; |
2217 | 3fa2a8d1 | Venkateswararao Jujjuri | V9fsString symname; |
2218 | 3fa2a8d1 | Venkateswararao Jujjuri | V9fsString fullname; |
2219 | 3fa2a8d1 | Venkateswararao Jujjuri | V9fsFidState *dfidp; |
2220 | 3fa2a8d1 | Venkateswararao Jujjuri | V9fsQID qid; |
2221 | 3fa2a8d1 | Venkateswararao Jujjuri | struct stat stbuf;
|
2222 | 08c60fc9 | Venkateswararao Jujjuri (JV) | int32_t dfid; |
2223 | 08c60fc9 | Venkateswararao Jujjuri (JV) | int err = 0; |
2224 | 08c60fc9 | Venkateswararao Jujjuri (JV) | gid_t gid; |
2225 | 3fa2a8d1 | Venkateswararao Jujjuri | size_t offset = 7;
|
2226 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2227 | 3fa2a8d1 | Venkateswararao Jujjuri | v9fs_string_init(&fullname); |
2228 | 3fa2a8d1 | Venkateswararao Jujjuri | pdu_unmarshal(pdu, offset, "dssd", &dfid, &name, &symname, &gid);
|
2229 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2230 | 84dfb926 | Aneesh Kumar K.V | dfidp = get_fid(pdu->s, dfid); |
2231 | 3fa2a8d1 | Venkateswararao Jujjuri | if (dfidp == NULL) { |
2232 | 08c60fc9 | Venkateswararao Jujjuri (JV) | err = -EINVAL; |
2233 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2234 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } |
2235 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2236 | 3fa2a8d1 | Venkateswararao Jujjuri | v9fs_string_sprintf(&fullname, "%s/%s", dfidp->path.data, name.data);
|
2237 | 3fa2a8d1 | Venkateswararao Jujjuri | err = v9fs_co_symlink(pdu->s, dfidp, symname.data, fullname.data, gid); |
2238 | 3fa2a8d1 | Venkateswararao Jujjuri | if (err < 0) { |
2239 | 3fa2a8d1 | Venkateswararao Jujjuri | goto out;
|
2240 | 3fa2a8d1 | Venkateswararao Jujjuri | } |
2241 | 3fa2a8d1 | Venkateswararao Jujjuri | err = v9fs_co_lstat(pdu->s, &fullname, &stbuf); |
2242 | 3fa2a8d1 | Venkateswararao Jujjuri | if (err < 0) { |
2243 | 3fa2a8d1 | Venkateswararao Jujjuri | goto out;
|
2244 | 3fa2a8d1 | Venkateswararao Jujjuri | } |
2245 | 3fa2a8d1 | Venkateswararao Jujjuri | stat_to_qid(&stbuf, &qid); |
2246 | 3fa2a8d1 | Venkateswararao Jujjuri | offset += pdu_marshal(pdu, offset, "Q", &qid);
|
2247 | 3fa2a8d1 | Venkateswararao Jujjuri | err = offset; |
2248 | 08c60fc9 | Venkateswararao Jujjuri (JV) | out:
|
2249 | 84dfb926 | Aneesh Kumar K.V | put_fid(pdu->s, dfidp); |
2250 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2251 | 3fa2a8d1 | Venkateswararao Jujjuri | complete_pdu(pdu->s, pdu, err); |
2252 | 3fa2a8d1 | Venkateswararao Jujjuri | v9fs_string_free(&name); |
2253 | 3fa2a8d1 | Venkateswararao Jujjuri | v9fs_string_free(&symname); |
2254 | 3fa2a8d1 | Venkateswararao Jujjuri | v9fs_string_free(&fullname); |
2255 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } |
2256 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2257 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_flush(void *opaque) |
2258 | 9f107513 | Anthony Liguori | { |
2259 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
2260 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
2261 | 9c5e9d89 | Anthony Liguori | /* A nop call with no return */
|
2262 | 9c5e9d89 | Anthony Liguori | complete_pdu(s, pdu, 7);
|
2263 | ff06030f | Venkateswararao Jujjuri (JV) | return;
|
2264 | 9f107513 | Anthony Liguori | } |
2265 | 9f107513 | Anthony Liguori | |
2266 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_link(void *opaque) |
2267 | b2c224be | Venkateswararao Jujjuri (JV) | { |
2268 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
2269 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
2270 | b2c224be | Venkateswararao Jujjuri (JV) | int32_t dfid, oldfid; |
2271 | b2c224be | Venkateswararao Jujjuri (JV) | V9fsFidState *dfidp, *oldfidp; |
2272 | b2c224be | Venkateswararao Jujjuri (JV) | V9fsString name, fullname; |
2273 | b2c224be | Venkateswararao Jujjuri (JV) | size_t offset = 7;
|
2274 | b2c224be | Venkateswararao Jujjuri (JV) | int err = 0; |
2275 | b2c224be | Venkateswararao Jujjuri (JV) | |
2276 | b2c224be | Venkateswararao Jujjuri (JV) | v9fs_string_init(&fullname); |
2277 | b2c224be | Venkateswararao Jujjuri (JV) | |
2278 | b2c224be | Venkateswararao Jujjuri (JV) | pdu_unmarshal(pdu, offset, "dds", &dfid, &oldfid, &name);
|
2279 | b2c224be | Venkateswararao Jujjuri (JV) | |
2280 | 84dfb926 | Aneesh Kumar K.V | dfidp = get_fid(s, dfid); |
2281 | b2c224be | Venkateswararao Jujjuri (JV) | if (dfidp == NULL) { |
2282 | ffd66876 | Venkateswararao Jujjuri (JV) | err = -ENOENT; |
2283 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2284 | b2c224be | Venkateswararao Jujjuri (JV) | } |
2285 | b2c224be | Venkateswararao Jujjuri (JV) | |
2286 | 84dfb926 | Aneesh Kumar K.V | oldfidp = get_fid(s, oldfid); |
2287 | b2c224be | Venkateswararao Jujjuri (JV) | if (oldfidp == NULL) { |
2288 | ffd66876 | Venkateswararao Jujjuri (JV) | err = -ENOENT; |
2289 | b2c224be | Venkateswararao Jujjuri (JV) | goto out;
|
2290 | b2c224be | Venkateswararao Jujjuri (JV) | } |
2291 | b2c224be | Venkateswararao Jujjuri (JV) | |
2292 | b2c224be | Venkateswararao Jujjuri (JV) | v9fs_string_sprintf(&fullname, "%s/%s", dfidp->path.data, name.data);
|
2293 | ffd66876 | Venkateswararao Jujjuri (JV) | err = v9fs_co_link(s, &oldfidp->path, &fullname); |
2294 | ffd66876 | Venkateswararao Jujjuri (JV) | if (!err) {
|
2295 | ffd66876 | Venkateswararao Jujjuri (JV) | err = offset; |
2296 | b2c224be | Venkateswararao Jujjuri (JV) | } |
2297 | b2c224be | Venkateswararao Jujjuri (JV) | v9fs_string_free(&fullname); |
2298 | b2c224be | Venkateswararao Jujjuri (JV) | |
2299 | b2c224be | Venkateswararao Jujjuri (JV) | out:
|
2300 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, dfidp); |
2301 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2302 | b2c224be | Venkateswararao Jujjuri (JV) | v9fs_string_free(&name); |
2303 | b2c224be | Venkateswararao Jujjuri (JV) | complete_pdu(s, pdu, err); |
2304 | b2c224be | Venkateswararao Jujjuri (JV) | } |
2305 | b2c224be | Venkateswararao Jujjuri (JV) | |
2306 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_remove(void *opaque) |
2307 | 9f107513 | Anthony Liguori | { |
2308 | 5bae1900 | Anthony Liguori | int32_t fid; |
2309 | 5bae1900 | Anthony Liguori | int err = 0; |
2310 | ae1ef571 | Venkateswararao Jujjuri | size_t offset = 7;
|
2311 | ae1ef571 | Venkateswararao Jujjuri | V9fsFidState *fidp; |
2312 | ae1ef571 | Venkateswararao Jujjuri | V9fsPDU *pdu = opaque; |
2313 | 5bae1900 | Anthony Liguori | |
2314 | ae1ef571 | Venkateswararao Jujjuri | pdu_unmarshal(pdu, offset, "d", &fid);
|
2315 | 5bae1900 | Anthony Liguori | |
2316 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(pdu->s, fid); |
2317 | ae1ef571 | Venkateswararao Jujjuri | if (fidp == NULL) { |
2318 | 5bae1900 | Anthony Liguori | err = -EINVAL; |
2319 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2320 | 9f107513 | Anthony Liguori | } |
2321 | 7a462745 | Aneesh Kumar K.V | /*
|
2322 | 7a462745 | Aneesh Kumar K.V | * IF the file is unlinked, we cannot reopen
|
2323 | 7a462745 | Aneesh Kumar K.V | * the file later. So don't reclaim fd
|
2324 | 7a462745 | Aneesh Kumar K.V | */
|
2325 | 7a462745 | Aneesh Kumar K.V | err = v9fs_mark_fids_unreclaim(pdu->s, &fidp->path); |
2326 | 7a462745 | Aneesh Kumar K.V | if (err < 0) { |
2327 | 7a462745 | Aneesh Kumar K.V | goto out_err;
|
2328 | 7a462745 | Aneesh Kumar K.V | } |
2329 | ae1ef571 | Venkateswararao Jujjuri | err = v9fs_co_remove(pdu->s, &fidp->path); |
2330 | ae1ef571 | Venkateswararao Jujjuri | if (!err) {
|
2331 | ae1ef571 | Venkateswararao Jujjuri | err = offset; |
2332 | ae1ef571 | Venkateswararao Jujjuri | } |
2333 | 7a462745 | Aneesh Kumar K.V | out_err:
|
2334 | ae1ef571 | Venkateswararao Jujjuri | /* For TREMOVE we need to clunk the fid even on failed remove */
|
2335 | 84dfb926 | Aneesh Kumar K.V | clunk_fid(pdu->s, fidp->fid); |
2336 | 84dfb926 | Aneesh Kumar K.V | put_fid(pdu->s, fidp); |
2337 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2338 | ae1ef571 | Venkateswararao Jujjuri | complete_pdu(pdu->s, pdu, err); |
2339 | 9f107513 | Anthony Liguori | } |
2340 | 9f107513 | Anthony Liguori | |
2341 | 7834cf77 | Aneesh Kumar K.V | static void v9fs_unlinkat(void *opaque) |
2342 | 7834cf77 | Aneesh Kumar K.V | { |
2343 | 7834cf77 | Aneesh Kumar K.V | int err = 0; |
2344 | 7834cf77 | Aneesh Kumar K.V | V9fsString name; |
2345 | 7834cf77 | Aneesh Kumar K.V | int32_t dfid, flags; |
2346 | 7834cf77 | Aneesh Kumar K.V | size_t offset = 7;
|
2347 | 7834cf77 | Aneesh Kumar K.V | V9fsFidState *dfidp; |
2348 | 7834cf77 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
2349 | 7834cf77 | Aneesh Kumar K.V | V9fsString full_name; |
2350 | 7834cf77 | Aneesh Kumar K.V | |
2351 | 7834cf77 | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "dsd", &dfid, &name, &flags);
|
2352 | 7834cf77 | Aneesh Kumar K.V | |
2353 | 7834cf77 | Aneesh Kumar K.V | dfidp = get_fid(pdu->s, dfid); |
2354 | 7834cf77 | Aneesh Kumar K.V | if (dfidp == NULL) { |
2355 | 7834cf77 | Aneesh Kumar K.V | err = -EINVAL; |
2356 | 7834cf77 | Aneesh Kumar K.V | goto out_nofid;
|
2357 | 7834cf77 | Aneesh Kumar K.V | } |
2358 | 7834cf77 | Aneesh Kumar K.V | v9fs_string_init(&full_name); |
2359 | 7834cf77 | Aneesh Kumar K.V | v9fs_string_sprintf(&full_name, "%s/%s", dfidp->path.data, name.data);
|
2360 | 7834cf77 | Aneesh Kumar K.V | /*
|
2361 | 7834cf77 | Aneesh Kumar K.V | * IF the file is unlinked, we cannot reopen
|
2362 | 7834cf77 | Aneesh Kumar K.V | * the file later. So don't reclaim fd
|
2363 | 7834cf77 | Aneesh Kumar K.V | */
|
2364 | 7834cf77 | Aneesh Kumar K.V | err = v9fs_mark_fids_unreclaim(pdu->s, &full_name); |
2365 | 7834cf77 | Aneesh Kumar K.V | if (err < 0) { |
2366 | 7834cf77 | Aneesh Kumar K.V | goto out_err;
|
2367 | 7834cf77 | Aneesh Kumar K.V | } |
2368 | 7834cf77 | Aneesh Kumar K.V | err = v9fs_co_remove(pdu->s, &full_name); |
2369 | 7834cf77 | Aneesh Kumar K.V | if (!err) {
|
2370 | 7834cf77 | Aneesh Kumar K.V | err = offset; |
2371 | 7834cf77 | Aneesh Kumar K.V | } |
2372 | 7834cf77 | Aneesh Kumar K.V | out_err:
|
2373 | 7834cf77 | Aneesh Kumar K.V | put_fid(pdu->s, dfidp); |
2374 | 7834cf77 | Aneesh Kumar K.V | v9fs_string_free(&full_name); |
2375 | 7834cf77 | Aneesh Kumar K.V | out_nofid:
|
2376 | 7834cf77 | Aneesh Kumar K.V | complete_pdu(pdu->s, pdu, err); |
2377 | 7834cf77 | Aneesh Kumar K.V | v9fs_string_free(&name); |
2378 | 7834cf77 | Aneesh Kumar K.V | } |
2379 | 7834cf77 | Aneesh Kumar K.V | |
2380 | 930b1e17 | Aneesh Kumar K.V | static int v9fs_complete_rename(V9fsState *s, V9fsFidState *fidp, |
2381 | 930b1e17 | Aneesh Kumar K.V | int32_t newdirfid, V9fsString *name) |
2382 | 8cf89e00 | Anthony Liguori | { |
2383 | 930b1e17 | Aneesh Kumar K.V | char *end;
|
2384 | c7b4b0b3 | M. Mohan Kumar | int err = 0; |
2385 | 84dfb926 | Aneesh Kumar K.V | V9fsFidState *dirfidp = NULL;
|
2386 | c7b4b0b3 | M. Mohan Kumar | char *old_name, *new_name;
|
2387 | 8cf89e00 | Anthony Liguori | |
2388 | 930b1e17 | Aneesh Kumar K.V | if (newdirfid != -1) { |
2389 | 84dfb926 | Aneesh Kumar K.V | dirfidp = get_fid(s, newdirfid); |
2390 | c7b4b0b3 | M. Mohan Kumar | if (dirfidp == NULL) { |
2391 | c7b4b0b3 | M. Mohan Kumar | err = -ENOENT; |
2392 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2393 | c7b4b0b3 | M. Mohan Kumar | } |
2394 | d62dbb51 | Aneesh Kumar K.V | BUG_ON(dirfidp->fid_type != P9_FID_NONE); |
2395 | 8cf89e00 | Anthony Liguori | |
2396 | 7267c094 | Anthony Liguori | new_name = g_malloc0(dirfidp->path.size + name->size + 2);
|
2397 | c7b4b0b3 | M. Mohan Kumar | |
2398 | c7b4b0b3 | M. Mohan Kumar | strcpy(new_name, dirfidp->path.data); |
2399 | c7b4b0b3 | M. Mohan Kumar | strcat(new_name, "/");
|
2400 | 930b1e17 | Aneesh Kumar K.V | strcat(new_name + dirfidp->path.size, name->data); |
2401 | c7b4b0b3 | M. Mohan Kumar | } else {
|
2402 | 930b1e17 | Aneesh Kumar K.V | old_name = fidp->path.data; |
2403 | 8cf89e00 | Anthony Liguori | end = strrchr(old_name, '/');
|
2404 | 8cf89e00 | Anthony Liguori | if (end) {
|
2405 | 8cf89e00 | Anthony Liguori | end++; |
2406 | 8cf89e00 | Anthony Liguori | } else {
|
2407 | 8cf89e00 | Anthony Liguori | end = old_name; |
2408 | 8cf89e00 | Anthony Liguori | } |
2409 | 7267c094 | Anthony Liguori | new_name = g_malloc0(end - old_name + name->size + 1);
|
2410 | 8cf89e00 | Anthony Liguori | |
2411 | c7b4b0b3 | M. Mohan Kumar | strncat(new_name, old_name, end - old_name); |
2412 | 930b1e17 | Aneesh Kumar K.V | strncat(new_name + (end - old_name), name->data, name->size); |
2413 | c7b4b0b3 | M. Mohan Kumar | } |
2414 | 8cf89e00 | Anthony Liguori | |
2415 | 930b1e17 | Aneesh Kumar K.V | v9fs_string_free(name); |
2416 | 930b1e17 | Aneesh Kumar K.V | name->data = new_name; |
2417 | 930b1e17 | Aneesh Kumar K.V | name->size = strlen(new_name); |
2418 | 8cf89e00 | Anthony Liguori | |
2419 | 930b1e17 | Aneesh Kumar K.V | if (strcmp(new_name, fidp->path.data) != 0) { |
2420 | 930b1e17 | Aneesh Kumar K.V | err = v9fs_co_rename(s, &fidp->path, name); |
2421 | 930b1e17 | Aneesh Kumar K.V | if (err < 0) { |
2422 | 930b1e17 | Aneesh Kumar K.V | goto out;
|
2423 | 930b1e17 | Aneesh Kumar K.V | } |
2424 | 930b1e17 | Aneesh Kumar K.V | V9fsFidState *tfidp; |
2425 | 930b1e17 | Aneesh Kumar K.V | /*
|
2426 | 930b1e17 | Aneesh Kumar K.V | * Fixup fid's pointing to the old name to
|
2427 | 930b1e17 | Aneesh Kumar K.V | * start pointing to the new name
|
2428 | 930b1e17 | Aneesh Kumar K.V | */
|
2429 | 930b1e17 | Aneesh Kumar K.V | for (tfidp = s->fid_list; tfidp; tfidp = tfidp->next) {
|
2430 | 930b1e17 | Aneesh Kumar K.V | if (fidp == tfidp) {
|
2431 | 930b1e17 | Aneesh Kumar K.V | /*
|
2432 | 930b1e17 | Aneesh Kumar K.V | * we replace name of this fid towards the end
|
2433 | 930b1e17 | Aneesh Kumar K.V | * so that our below strcmp will work
|
2434 | 930b1e17 | Aneesh Kumar K.V | */
|
2435 | 930b1e17 | Aneesh Kumar K.V | continue;
|
2436 | 930b1e17 | Aneesh Kumar K.V | } |
2437 | 930b1e17 | Aneesh Kumar K.V | if (v9fs_path_is_ancestor(&fidp->path, &tfidp->path)) {
|
2438 | 930b1e17 | Aneesh Kumar K.V | /* replace the name */
|
2439 | 930b1e17 | Aneesh Kumar K.V | v9fs_fix_path(&tfidp->path, name, strlen(fidp->path.data)); |
2440 | 8cf89e00 | Anthony Liguori | } |
2441 | 8cf89e00 | Anthony Liguori | } |
2442 | 930b1e17 | Aneesh Kumar K.V | v9fs_string_copy(&fidp->path, name); |
2443 | 8cf89e00 | Anthony Liguori | } |
2444 | c7b4b0b3 | M. Mohan Kumar | out:
|
2445 | 84dfb926 | Aneesh Kumar K.V | if (dirfidp) {
|
2446 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, dirfidp); |
2447 | 84dfb926 | Aneesh Kumar K.V | } |
2448 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2449 | c7b4b0b3 | M. Mohan Kumar | return err;
|
2450 | c7b4b0b3 | M. Mohan Kumar | } |
2451 | c7b4b0b3 | M. Mohan Kumar | |
2452 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_rename(void *opaque) |
2453 | c7b4b0b3 | M. Mohan Kumar | { |
2454 | c7b4b0b3 | M. Mohan Kumar | int32_t fid; |
2455 | c7b4b0b3 | M. Mohan Kumar | ssize_t err = 0;
|
2456 | 930b1e17 | Aneesh Kumar K.V | size_t offset = 7;
|
2457 | 930b1e17 | Aneesh Kumar K.V | V9fsString name; |
2458 | 930b1e17 | Aneesh Kumar K.V | int32_t newdirfid; |
2459 | 930b1e17 | Aneesh Kumar K.V | V9fsFidState *fidp; |
2460 | 930b1e17 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
2461 | 930b1e17 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
2462 | c7b4b0b3 | M. Mohan Kumar | |
2463 | 930b1e17 | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "dds", &fid, &newdirfid, &name);
|
2464 | c7b4b0b3 | M. Mohan Kumar | |
2465 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(s, 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 | c7b4b0b3 | M. Mohan Kumar | |
2472 | 930b1e17 | Aneesh Kumar K.V | err = v9fs_complete_rename(s, fidp, newdirfid, &name); |
2473 | 930b1e17 | Aneesh Kumar K.V | if (!err) {
|
2474 | 930b1e17 | Aneesh Kumar K.V | err = offset; |
2475 | 930b1e17 | Aneesh Kumar K.V | } |
2476 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
2477 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2478 | 930b1e17 | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
2479 | 930b1e17 | Aneesh Kumar K.V | v9fs_string_free(&name); |
2480 | c7b4b0b3 | M. Mohan Kumar | } |
2481 | c7b4b0b3 | M. Mohan Kumar | |
2482 | 89bf6593 | Aneesh Kumar K.V | static int v9fs_complete_renameat(V9fsState *s, int32_t olddirfid, |
2483 | 89bf6593 | Aneesh Kumar K.V | V9fsString *old_name, int32_t newdirfid, |
2484 | 89bf6593 | Aneesh Kumar K.V | V9fsString *new_name) |
2485 | 89bf6593 | Aneesh Kumar K.V | { |
2486 | 89bf6593 | Aneesh Kumar K.V | int err = 0; |
2487 | 89bf6593 | Aneesh Kumar K.V | V9fsString old_full_name, new_full_name; |
2488 | 89bf6593 | Aneesh Kumar K.V | V9fsFidState *newdirfidp = NULL, *olddirfidp = NULL; |
2489 | 89bf6593 | Aneesh Kumar K.V | |
2490 | 89bf6593 | Aneesh Kumar K.V | olddirfidp = get_fid(s, olddirfid); |
2491 | 89bf6593 | Aneesh Kumar K.V | if (olddirfidp == NULL) { |
2492 | 89bf6593 | Aneesh Kumar K.V | err = -ENOENT; |
2493 | 89bf6593 | Aneesh Kumar K.V | goto out;
|
2494 | 89bf6593 | Aneesh Kumar K.V | } |
2495 | 89bf6593 | Aneesh Kumar K.V | v9fs_string_init(&old_full_name); |
2496 | 89bf6593 | Aneesh Kumar K.V | v9fs_string_init(&new_full_name); |
2497 | 89bf6593 | Aneesh Kumar K.V | |
2498 | 89bf6593 | Aneesh Kumar K.V | v9fs_string_sprintf(&old_full_name, "%s/%s",
|
2499 | 89bf6593 | Aneesh Kumar K.V | olddirfidp->path.data, old_name->data); |
2500 | 89bf6593 | Aneesh Kumar K.V | if (newdirfid != -1) { |
2501 | 89bf6593 | Aneesh Kumar K.V | newdirfidp = get_fid(s, newdirfid); |
2502 | 89bf6593 | Aneesh Kumar K.V | if (newdirfidp == NULL) { |
2503 | 89bf6593 | Aneesh Kumar K.V | err = -ENOENT; |
2504 | 89bf6593 | Aneesh Kumar K.V | goto out;
|
2505 | 89bf6593 | Aneesh Kumar K.V | } |
2506 | 89bf6593 | Aneesh Kumar K.V | v9fs_string_sprintf(&new_full_name, "%s/%s",
|
2507 | 89bf6593 | Aneesh Kumar K.V | newdirfidp->path.data, new_name->data); |
2508 | 89bf6593 | Aneesh Kumar K.V | } else {
|
2509 | 89bf6593 | Aneesh Kumar K.V | v9fs_string_sprintf(&new_full_name, "%s/%s",
|
2510 | 89bf6593 | Aneesh Kumar K.V | olddirfidp->path.data, new_name->data); |
2511 | 89bf6593 | Aneesh Kumar K.V | } |
2512 | 89bf6593 | Aneesh Kumar K.V | |
2513 | 89bf6593 | Aneesh Kumar K.V | if (strcmp(old_full_name.data, new_full_name.data) != 0) { |
2514 | 89bf6593 | Aneesh Kumar K.V | V9fsFidState *tfidp; |
2515 | 89bf6593 | Aneesh Kumar K.V | err = v9fs_co_rename(s, &old_full_name, &new_full_name); |
2516 | 89bf6593 | Aneesh Kumar K.V | if (err < 0) { |
2517 | 89bf6593 | Aneesh Kumar K.V | goto out;
|
2518 | 89bf6593 | Aneesh Kumar K.V | } |
2519 | 89bf6593 | Aneesh Kumar K.V | /*
|
2520 | 89bf6593 | Aneesh Kumar K.V | * Fixup fid's pointing to the old name to
|
2521 | 89bf6593 | Aneesh Kumar K.V | * start pointing to the new name
|
2522 | 89bf6593 | Aneesh Kumar K.V | */
|
2523 | 89bf6593 | Aneesh Kumar K.V | for (tfidp = s->fid_list; tfidp; tfidp = tfidp->next) {
|
2524 | 89bf6593 | Aneesh Kumar K.V | if (v9fs_path_is_ancestor(&old_full_name, &tfidp->path)) {
|
2525 | 89bf6593 | Aneesh Kumar K.V | /* replace the name */
|
2526 | 89bf6593 | Aneesh Kumar K.V | v9fs_fix_path(&tfidp->path, &new_full_name, old_full_name.size); |
2527 | 89bf6593 | Aneesh Kumar K.V | } |
2528 | 89bf6593 | Aneesh Kumar K.V | } |
2529 | 89bf6593 | Aneesh Kumar K.V | } |
2530 | 89bf6593 | Aneesh Kumar K.V | out:
|
2531 | 89bf6593 | Aneesh Kumar K.V | if (olddirfidp) {
|
2532 | 89bf6593 | Aneesh Kumar K.V | put_fid(s, olddirfidp); |
2533 | 89bf6593 | Aneesh Kumar K.V | } |
2534 | 89bf6593 | Aneesh Kumar K.V | if (newdirfidp) {
|
2535 | 89bf6593 | Aneesh Kumar K.V | put_fid(s, newdirfidp); |
2536 | 89bf6593 | Aneesh Kumar K.V | } |
2537 | 89bf6593 | Aneesh Kumar K.V | v9fs_string_free(&old_full_name); |
2538 | 89bf6593 | Aneesh Kumar K.V | v9fs_string_free(&new_full_name); |
2539 | 89bf6593 | Aneesh Kumar K.V | return err;
|
2540 | 89bf6593 | Aneesh Kumar K.V | } |
2541 | 89bf6593 | Aneesh Kumar K.V | |
2542 | 89bf6593 | Aneesh Kumar K.V | static void v9fs_renameat(void *opaque) |
2543 | 89bf6593 | Aneesh Kumar K.V | { |
2544 | 89bf6593 | Aneesh Kumar K.V | ssize_t err = 0;
|
2545 | 89bf6593 | Aneesh Kumar K.V | size_t offset = 7;
|
2546 | 89bf6593 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
2547 | 89bf6593 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
2548 | 89bf6593 | Aneesh Kumar K.V | int32_t olddirfid, newdirfid; |
2549 | 89bf6593 | Aneesh Kumar K.V | V9fsString old_name, new_name; |
2550 | 89bf6593 | Aneesh Kumar K.V | |
2551 | 89bf6593 | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "dsds", &olddirfid,
|
2552 | 89bf6593 | Aneesh Kumar K.V | &old_name, &newdirfid, &new_name); |
2553 | 89bf6593 | Aneesh Kumar K.V | |
2554 | 89bf6593 | Aneesh Kumar K.V | err = v9fs_complete_renameat(s, olddirfid, &old_name, newdirfid, &new_name); |
2555 | 89bf6593 | Aneesh Kumar K.V | if (!err) {
|
2556 | 89bf6593 | Aneesh Kumar K.V | err = offset; |
2557 | 89bf6593 | Aneesh Kumar K.V | } |
2558 | 89bf6593 | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
2559 | 89bf6593 | Aneesh Kumar K.V | v9fs_string_free(&old_name); |
2560 | 89bf6593 | Aneesh Kumar K.V | v9fs_string_free(&new_name); |
2561 | 89bf6593 | Aneesh Kumar K.V | } |
2562 | 89bf6593 | Aneesh Kumar K.V | |
2563 | b81d685e | Aneesh Kumar K.V | static void v9fs_wstat(void *opaque) |
2564 | 8cf89e00 | Anthony Liguori | { |
2565 | b81d685e | Aneesh Kumar K.V | int32_t fid; |
2566 | b81d685e | Aneesh Kumar K.V | int err = 0; |
2567 | b81d685e | Aneesh Kumar K.V | int16_t unused; |
2568 | b81d685e | Aneesh Kumar K.V | V9fsStat v9stat; |
2569 | b81d685e | Aneesh Kumar K.V | size_t offset = 7;
|
2570 | b81d685e | Aneesh Kumar K.V | struct stat stbuf;
|
2571 | b81d685e | Aneesh Kumar K.V | V9fsFidState *fidp; |
2572 | b81d685e | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
2573 | b81d685e | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
2574 | 8cf89e00 | Anthony Liguori | |
2575 | b81d685e | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "dwS", &fid, &unused, &v9stat);
|
2576 | 84dfb926 | Aneesh Kumar K.V | |
2577 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(s, fid); |
2578 | b81d685e | Aneesh Kumar K.V | if (fidp == NULL) { |
2579 | b81d685e | Aneesh Kumar K.V | err = -EINVAL; |
2580 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2581 | 8cf89e00 | Anthony Liguori | } |
2582 | b81d685e | Aneesh Kumar K.V | /* do we need to sync the file? */
|
2583 | b81d685e | Aneesh Kumar K.V | if (donttouch_stat(&v9stat)) {
|
2584 | b81d685e | Aneesh Kumar K.V | err = v9fs_co_fsync(s, fidp, 0);
|
2585 | 8cf89e00 | Anthony Liguori | goto out;
|
2586 | 8cf89e00 | Anthony Liguori | } |
2587 | b81d685e | Aneesh Kumar K.V | if (v9stat.mode != -1) { |
2588 | b81d685e | Aneesh Kumar K.V | uint32_t v9_mode; |
2589 | b81d685e | Aneesh Kumar K.V | err = v9fs_co_lstat(s, &fidp->path, &stbuf); |
2590 | b81d685e | Aneesh Kumar K.V | if (err < 0) { |
2591 | b81d685e | Aneesh Kumar K.V | goto out;
|
2592 | b81d685e | Aneesh Kumar K.V | } |
2593 | b81d685e | Aneesh Kumar K.V | v9_mode = stat_to_v9mode(&stbuf); |
2594 | b81d685e | Aneesh Kumar K.V | if ((v9stat.mode & P9_STAT_MODE_TYPE_BITS) !=
|
2595 | b81d685e | Aneesh Kumar K.V | (v9_mode & P9_STAT_MODE_TYPE_BITS)) { |
2596 | b81d685e | Aneesh Kumar K.V | /* Attempting to change the type */
|
2597 | b81d685e | Aneesh Kumar K.V | err = -EIO; |
2598 | b81d685e | Aneesh Kumar K.V | goto out;
|
2599 | b81d685e | Aneesh Kumar K.V | } |
2600 | b81d685e | Aneesh Kumar K.V | err = v9fs_co_chmod(s, &fidp->path, |
2601 | b81d685e | Aneesh Kumar K.V | v9mode_to_mode(v9stat.mode, |
2602 | b81d685e | Aneesh Kumar K.V | &v9stat.extension)); |
2603 | b81d685e | Aneesh Kumar K.V | if (err < 0) { |
2604 | b81d685e | Aneesh Kumar K.V | goto out;
|
2605 | b81d685e | Aneesh Kumar K.V | } |
2606 | b81d685e | Aneesh Kumar K.V | } |
2607 | b81d685e | Aneesh Kumar K.V | if (v9stat.mtime != -1 || v9stat.atime != -1) { |
2608 | 8fc39ae4 | Sripathi Kodi | struct timespec times[2]; |
2609 | b81d685e | Aneesh Kumar K.V | if (v9stat.atime != -1) { |
2610 | b81d685e | Aneesh Kumar K.V | times[0].tv_sec = v9stat.atime;
|
2611 | 8fc39ae4 | Sripathi Kodi | times[0].tv_nsec = 0; |
2612 | 8fc39ae4 | Sripathi Kodi | } else {
|
2613 | 8fc39ae4 | Sripathi Kodi | times[0].tv_nsec = UTIME_OMIT;
|
2614 | 8fc39ae4 | Sripathi Kodi | } |
2615 | b81d685e | Aneesh Kumar K.V | if (v9stat.mtime != -1) { |
2616 | b81d685e | Aneesh Kumar K.V | times[1].tv_sec = v9stat.mtime;
|
2617 | 8fc39ae4 | Sripathi Kodi | times[1].tv_nsec = 0; |
2618 | 8fc39ae4 | Sripathi Kodi | } else {
|
2619 | 8fc39ae4 | Sripathi Kodi | times[1].tv_nsec = UTIME_OMIT;
|
2620 | 8fc39ae4 | Sripathi Kodi | } |
2621 | b81d685e | Aneesh Kumar K.V | err = v9fs_co_utimensat(s, &fidp->path, times); |
2622 | b81d685e | Aneesh Kumar K.V | if (err < 0) { |
2623 | b81d685e | Aneesh Kumar K.V | goto out;
|
2624 | 8cf89e00 | Anthony Liguori | } |
2625 | 8cf89e00 | Anthony Liguori | } |
2626 | b81d685e | Aneesh Kumar K.V | if (v9stat.n_gid != -1 || v9stat.n_uid != -1) { |
2627 | b81d685e | Aneesh Kumar K.V | err = v9fs_co_chown(s, &fidp->path, v9stat.n_uid, v9stat.n_gid); |
2628 | b81d685e | Aneesh Kumar K.V | if (err < 0) { |
2629 | 8cf89e00 | Anthony Liguori | goto out;
|
2630 | b81d685e | Aneesh Kumar K.V | } |
2631 | 8cf89e00 | Anthony Liguori | } |
2632 | b81d685e | Aneesh Kumar K.V | if (v9stat.name.size != 0) { |
2633 | b81d685e | Aneesh Kumar K.V | err = v9fs_complete_rename(s, fidp, -1, &v9stat.name);
|
2634 | b81d685e | Aneesh Kumar K.V | if (err < 0) { |
2635 | b81d685e | Aneesh Kumar K.V | goto out;
|
2636 | b81d685e | Aneesh Kumar K.V | } |
2637 | 8cf89e00 | Anthony Liguori | } |
2638 | b81d685e | Aneesh Kumar K.V | if (v9stat.length != -1) { |
2639 | b81d685e | Aneesh Kumar K.V | err = v9fs_co_truncate(s, &fidp->path, v9stat.length); |
2640 | b81d685e | Aneesh Kumar K.V | if (err < 0) { |
2641 | b81d685e | Aneesh Kumar K.V | goto out;
|
2642 | b81d685e | Aneesh Kumar K.V | } |
2643 | 8cf89e00 | Anthony Liguori | } |
2644 | b81d685e | Aneesh Kumar K.V | err = offset; |
2645 | 8cf89e00 | Anthony Liguori | out:
|
2646 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
2647 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2648 | b81d685e | Aneesh Kumar K.V | v9fs_stat_free(&v9stat); |
2649 | b81d685e | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
2650 | 9f107513 | Anthony Liguori | } |
2651 | 9f107513 | Anthony Liguori | |
2652 | 88a4763e | Aneesh Kumar K.V | static int v9fs_fill_statfs(V9fsState *s, V9fsPDU *pdu, struct statfs *stbuf) |
2653 | 88a4763e | Aneesh Kumar K.V | { |
2654 | 88a4763e | Aneesh Kumar K.V | uint32_t f_type; |
2655 | 88a4763e | Aneesh Kumar K.V | uint32_t f_bsize; |
2656 | 88a4763e | Aneesh Kumar K.V | uint64_t f_blocks; |
2657 | 88a4763e | Aneesh Kumar K.V | uint64_t f_bfree; |
2658 | 88a4763e | Aneesh Kumar K.V | uint64_t f_bavail; |
2659 | 88a4763e | Aneesh Kumar K.V | uint64_t f_files; |
2660 | 88a4763e | Aneesh Kumar K.V | uint64_t f_ffree; |
2661 | 88a4763e | Aneesh Kumar K.V | uint64_t fsid_val; |
2662 | 88a4763e | Aneesh Kumar K.V | uint32_t f_namelen; |
2663 | 88a4763e | Aneesh Kumar K.V | size_t offset = 7;
|
2664 | 5e94c103 | M. Mohan Kumar | int32_t bsize_factor; |
2665 | 5e94c103 | M. Mohan Kumar | |
2666 | 5e94c103 | M. Mohan Kumar | /*
|
2667 | 5e94c103 | M. Mohan Kumar | * compute bsize factor based on host file system block size
|
2668 | 5e94c103 | M. Mohan Kumar | * and client msize
|
2669 | 5e94c103 | M. Mohan Kumar | */
|
2670 | 88a4763e | Aneesh Kumar K.V | bsize_factor = (s->msize - P9_IOHDRSZ)/stbuf->f_bsize; |
2671 | 5e94c103 | M. Mohan Kumar | if (!bsize_factor) {
|
2672 | 5e94c103 | M. Mohan Kumar | bsize_factor = 1;
|
2673 | 5e94c103 | M. Mohan Kumar | } |
2674 | 88a4763e | Aneesh Kumar K.V | f_type = stbuf->f_type; |
2675 | 88a4763e | Aneesh Kumar K.V | f_bsize = stbuf->f_bsize; |
2676 | 88a4763e | Aneesh Kumar K.V | f_bsize *= bsize_factor; |
2677 | 5e94c103 | M. Mohan Kumar | /*
|
2678 | 5e94c103 | M. Mohan Kumar | * f_bsize is adjusted(multiplied) by bsize factor, so we need to
|
2679 | 5e94c103 | M. Mohan Kumar | * adjust(divide) the number of blocks, free blocks and available
|
2680 | 5e94c103 | M. Mohan Kumar | * blocks by bsize factor
|
2681 | 5e94c103 | M. Mohan Kumar | */
|
2682 | 88a4763e | Aneesh Kumar K.V | f_blocks = stbuf->f_blocks/bsize_factor; |
2683 | 88a4763e | Aneesh Kumar K.V | f_bfree = stbuf->f_bfree/bsize_factor; |
2684 | 88a4763e | Aneesh Kumar K.V | f_bavail = stbuf->f_bavail/bsize_factor; |
2685 | 88a4763e | Aneesh Kumar K.V | f_files = stbuf->f_files; |
2686 | 88a4763e | Aneesh Kumar K.V | f_ffree = stbuf->f_ffree; |
2687 | 88a4763e | Aneesh Kumar K.V | fsid_val = (unsigned int) stbuf->f_fsid.__val[0] | |
2688 | 88a4763e | Aneesh Kumar K.V | (unsigned long long)stbuf->f_fsid.__val[1] << 32; |
2689 | 88a4763e | Aneesh Kumar K.V | f_namelen = stbuf->f_namelen; |
2690 | be940c87 | M. Mohan Kumar | |
2691 | 88a4763e | Aneesh Kumar K.V | return pdu_marshal(pdu, offset, "ddqqqqqqd", |
2692 | 88a4763e | Aneesh Kumar K.V | f_type, f_bsize, f_blocks, f_bfree, |
2693 | 88a4763e | Aneesh Kumar K.V | f_bavail, f_files, f_ffree, |
2694 | 88a4763e | Aneesh Kumar K.V | fsid_val, f_namelen); |
2695 | be940c87 | M. Mohan Kumar | } |
2696 | be940c87 | M. Mohan Kumar | |
2697 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_statfs(void *opaque) |
2698 | be940c87 | M. Mohan Kumar | { |
2699 | 88a4763e | Aneesh Kumar K.V | int32_t fid; |
2700 | 88a4763e | Aneesh Kumar K.V | ssize_t retval = 0;
|
2701 | 88a4763e | Aneesh Kumar K.V | size_t offset = 7;
|
2702 | 88a4763e | Aneesh Kumar K.V | V9fsFidState *fidp; |
2703 | 88a4763e | Aneesh Kumar K.V | struct statfs stbuf;
|
2704 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
2705 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
2706 | be940c87 | M. Mohan Kumar | |
2707 | 88a4763e | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "d", &fid);
|
2708 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(s, fid); |
2709 | 88a4763e | Aneesh Kumar K.V | if (fidp == NULL) { |
2710 | 88a4763e | Aneesh Kumar K.V | retval = -ENOENT; |
2711 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2712 | be940c87 | M. Mohan Kumar | } |
2713 | 88a4763e | Aneesh Kumar K.V | retval = v9fs_co_statfs(s, &fidp->path, &stbuf); |
2714 | 88a4763e | Aneesh Kumar K.V | if (retval < 0) { |
2715 | 88a4763e | Aneesh Kumar K.V | goto out;
|
2716 | 88a4763e | Aneesh Kumar K.V | } |
2717 | 88a4763e | Aneesh Kumar K.V | retval = offset; |
2718 | 88a4763e | Aneesh Kumar K.V | retval += v9fs_fill_statfs(s, pdu, &stbuf); |
2719 | be940c87 | M. Mohan Kumar | out:
|
2720 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
2721 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2722 | 88a4763e | Aneesh Kumar K.V | complete_pdu(s, pdu, retval); |
2723 | ff06030f | Venkateswararao Jujjuri (JV) | return;
|
2724 | be940c87 | M. Mohan Kumar | } |
2725 | be940c87 | M. Mohan Kumar | |
2726 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_mknod(void *opaque) |
2727 | 5268cecc | M. Mohan Kumar | { |
2728 | 1b733fed | Aneesh Kumar K.V | |
2729 | 1b733fed | Aneesh Kumar K.V | int mode;
|
2730 | 1b733fed | Aneesh Kumar K.V | gid_t gid; |
2731 | 5268cecc | M. Mohan Kumar | int32_t fid; |
2732 | 1b733fed | Aneesh Kumar K.V | V9fsQID qid; |
2733 | 5268cecc | M. Mohan Kumar | int err = 0; |
2734 | 5268cecc | M. Mohan Kumar | int major, minor;
|
2735 | 1b733fed | Aneesh Kumar K.V | size_t offset = 7;
|
2736 | 1b733fed | Aneesh Kumar K.V | V9fsString name; |
2737 | 1b733fed | Aneesh Kumar K.V | struct stat stbuf;
|
2738 | 1b733fed | Aneesh Kumar K.V | V9fsString fullname; |
2739 | 1b733fed | Aneesh Kumar K.V | V9fsFidState *fidp; |
2740 | 1b733fed | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
2741 | 1b733fed | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
2742 | 5268cecc | M. Mohan Kumar | |
2743 | 1b733fed | Aneesh Kumar K.V | v9fs_string_init(&fullname); |
2744 | 1b733fed | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "dsdddd", &fid, &name, &mode,
|
2745 | 1b733fed | Aneesh Kumar K.V | &major, &minor, &gid); |
2746 | 5268cecc | M. Mohan Kumar | |
2747 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(s, fid); |
2748 | 5268cecc | M. Mohan Kumar | if (fidp == NULL) { |
2749 | 5268cecc | M. Mohan Kumar | err = -ENOENT; |
2750 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2751 | 5268cecc | M. Mohan Kumar | } |
2752 | 1b733fed | Aneesh Kumar K.V | v9fs_string_sprintf(&fullname, "%s/%s", fidp->path.data, name.data);
|
2753 | 1b733fed | Aneesh Kumar K.V | err = v9fs_co_mknod(s, &fullname, fidp->uid, gid, |
2754 | 1b733fed | Aneesh Kumar K.V | makedev(major, minor), mode); |
2755 | 1b733fed | Aneesh Kumar K.V | if (err < 0) { |
2756 | 1b733fed | Aneesh Kumar K.V | goto out;
|
2757 | 1b733fed | Aneesh Kumar K.V | } |
2758 | 1b733fed | Aneesh Kumar K.V | err = v9fs_co_lstat(s, &fullname, &stbuf); |
2759 | 1b733fed | Aneesh Kumar K.V | if (err < 0) { |
2760 | 1b733fed | Aneesh Kumar K.V | goto out;
|
2761 | 1b733fed | Aneesh Kumar K.V | } |
2762 | 1b733fed | Aneesh Kumar K.V | stat_to_qid(&stbuf, &qid); |
2763 | 1b733fed | Aneesh Kumar K.V | err = offset; |
2764 | 1b733fed | Aneesh Kumar K.V | err += pdu_marshal(pdu, offset, "Q", &qid);
|
2765 | 5268cecc | M. Mohan Kumar | out:
|
2766 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
2767 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2768 | 1b733fed | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
2769 | 1b733fed | Aneesh Kumar K.V | v9fs_string_free(&fullname); |
2770 | 1b733fed | Aneesh Kumar K.V | v9fs_string_free(&name); |
2771 | 5268cecc | M. Mohan Kumar | } |
2772 | 5268cecc | M. Mohan Kumar | |
2773 | 82cc3ee8 | M. Mohan Kumar | /*
|
2774 | 82cc3ee8 | M. Mohan Kumar | * Implement posix byte range locking code
|
2775 | 82cc3ee8 | M. Mohan Kumar | * Server side handling of locking code is very simple, because 9p server in
|
2776 | 82cc3ee8 | M. Mohan Kumar | * QEMU can handle only one client. And most of the lock handling
|
2777 | 82cc3ee8 | M. Mohan Kumar | * (like conflict, merging) etc is done by the VFS layer itself, so no need to
|
2778 | 82cc3ee8 | M. Mohan Kumar | * do any thing in * qemu 9p server side lock code path.
|
2779 | 82cc3ee8 | M. Mohan Kumar | * So when a TLOCK request comes, always return success
|
2780 | 82cc3ee8 | M. Mohan Kumar | */
|
2781 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_lock(void *opaque) |
2782 | 82cc3ee8 | M. Mohan Kumar | { |
2783 | 0c27bf2a | Aneesh Kumar K.V | int8_t status; |
2784 | 0c27bf2a | Aneesh Kumar K.V | V9fsFlock *flock; |
2785 | 0c27bf2a | Aneesh Kumar K.V | size_t offset = 7;
|
2786 | 0c27bf2a | Aneesh Kumar K.V | struct stat stbuf;
|
2787 | 0c27bf2a | Aneesh Kumar K.V | V9fsFidState *fidp; |
2788 | 0c27bf2a | Aneesh Kumar K.V | int32_t fid, err = 0;
|
2789 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
2790 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
2791 | 82cc3ee8 | M. Mohan Kumar | |
2792 | 0c27bf2a | Aneesh Kumar K.V | flock = g_malloc(sizeof(*flock));
|
2793 | 0c27bf2a | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "dbdqqds", &fid, &flock->type,
|
2794 | 0c27bf2a | Aneesh Kumar K.V | &flock->flags, &flock->start, &flock->length, |
2795 | 0c27bf2a | Aneesh Kumar K.V | &flock->proc_id, &flock->client_id); |
2796 | 0c27bf2a | Aneesh Kumar K.V | status = P9_LOCK_ERROR; |
2797 | 82cc3ee8 | M. Mohan Kumar | |
2798 | 82cc3ee8 | M. Mohan Kumar | /* We support only block flag now (that too ignored currently) */
|
2799 | 0c27bf2a | Aneesh Kumar K.V | if (flock->flags & ~P9_LOCK_FLAGS_BLOCK) {
|
2800 | 82cc3ee8 | M. Mohan Kumar | err = -EINVAL; |
2801 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2802 | 82cc3ee8 | M. Mohan Kumar | } |
2803 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(s, fid); |
2804 | 0c27bf2a | Aneesh Kumar K.V | if (fidp == NULL) { |
2805 | 82cc3ee8 | M. Mohan Kumar | err = -ENOENT; |
2806 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2807 | 82cc3ee8 | M. Mohan Kumar | } |
2808 | 0c27bf2a | Aneesh Kumar K.V | err = v9fs_co_fstat(s, fidp->fs.fd, &stbuf); |
2809 | 82cc3ee8 | M. Mohan Kumar | if (err < 0) { |
2810 | 82cc3ee8 | M. Mohan Kumar | goto out;
|
2811 | 82cc3ee8 | M. Mohan Kumar | } |
2812 | 0c27bf2a | Aneesh Kumar K.V | status = P9_LOCK_SUCCESS; |
2813 | 82cc3ee8 | M. Mohan Kumar | out:
|
2814 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
2815 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2816 | 0c27bf2a | Aneesh Kumar K.V | err = offset; |
2817 | 0c27bf2a | Aneesh Kumar K.V | err += pdu_marshal(pdu, offset, "b", status);
|
2818 | 0c27bf2a | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
2819 | 10e72295 | Aneesh Kumar K.V | v9fs_string_free(&flock->client_id); |
2820 | 0c27bf2a | Aneesh Kumar K.V | g_free(flock); |
2821 | 82cc3ee8 | M. Mohan Kumar | } |
2822 | 82cc3ee8 | M. Mohan Kumar | |
2823 | 8f354003 | M. Mohan Kumar | /*
|
2824 | 8f354003 | M. Mohan Kumar | * When a TGETLOCK request comes, always return success because all lock
|
2825 | 8f354003 | M. Mohan Kumar | * handling is done by client's VFS layer.
|
2826 | 8f354003 | M. Mohan Kumar | */
|
2827 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_getlock(void *opaque) |
2828 | 8f354003 | M. Mohan Kumar | { |
2829 | e4e414a4 | Aneesh Kumar K.V | size_t offset = 7;
|
2830 | e4e414a4 | Aneesh Kumar K.V | struct stat stbuf;
|
2831 | e4e414a4 | Aneesh Kumar K.V | V9fsFidState *fidp; |
2832 | e4e414a4 | Aneesh Kumar K.V | V9fsGetlock *glock; |
2833 | e4e414a4 | Aneesh Kumar K.V | int32_t fid, err = 0;
|
2834 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
2835 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsState *s = pdu->s; |
2836 | 8f354003 | M. Mohan Kumar | |
2837 | e4e414a4 | Aneesh Kumar K.V | glock = g_malloc(sizeof(*glock));
|
2838 | e4e414a4 | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "dbqqds", &fid, &glock->type,
|
2839 | e4e414a4 | Aneesh Kumar K.V | &glock->start, &glock->length, &glock->proc_id, |
2840 | e4e414a4 | Aneesh Kumar K.V | &glock->client_id); |
2841 | 8f354003 | M. Mohan Kumar | |
2842 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(s, fid); |
2843 | e4e414a4 | Aneesh Kumar K.V | if (fidp == NULL) { |
2844 | 8f354003 | M. Mohan Kumar | err = -ENOENT; |
2845 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2846 | 8f354003 | M. Mohan Kumar | } |
2847 | e4e414a4 | Aneesh Kumar K.V | err = v9fs_co_fstat(s, fidp->fs.fd, &stbuf); |
2848 | 8f354003 | M. Mohan Kumar | if (err < 0) { |
2849 | 8f354003 | M. Mohan Kumar | goto out;
|
2850 | 8f354003 | M. Mohan Kumar | } |
2851 | e4e414a4 | Aneesh Kumar K.V | glock->type = F_UNLCK; |
2852 | e4e414a4 | Aneesh Kumar K.V | offset += pdu_marshal(pdu, offset, "bqqds", glock->type,
|
2853 | e4e414a4 | Aneesh Kumar K.V | glock->start, glock->length, glock->proc_id, |
2854 | e4e414a4 | Aneesh Kumar K.V | &glock->client_id); |
2855 | e4e414a4 | Aneesh Kumar K.V | err = offset; |
2856 | 8f354003 | M. Mohan Kumar | out:
|
2857 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, fidp); |
2858 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2859 | e4e414a4 | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
2860 | 10e72295 | Aneesh Kumar K.V | v9fs_string_free(&glock->client_id); |
2861 | e4e414a4 | Aneesh Kumar K.V | g_free(glock); |
2862 | 8f354003 | M. Mohan Kumar | } |
2863 | 8f354003 | M. Mohan Kumar | |
2864 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_mkdir(void *opaque) |
2865 | b67592ea | M. Mohan Kumar | { |
2866 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
2867 | e84861f7 | Venkateswararao Jujjuri | size_t offset = 7;
|
2868 | b67592ea | M. Mohan Kumar | int32_t fid; |
2869 | e84861f7 | Venkateswararao Jujjuri | struct stat stbuf;
|
2870 | e84861f7 | Venkateswararao Jujjuri | V9fsString name, fullname; |
2871 | e84861f7 | Venkateswararao Jujjuri | V9fsQID qid; |
2872 | b67592ea | M. Mohan Kumar | V9fsFidState *fidp; |
2873 | b67592ea | M. Mohan Kumar | gid_t gid; |
2874 | b67592ea | M. Mohan Kumar | int mode;
|
2875 | e84861f7 | Venkateswararao Jujjuri | int err = 0; |
2876 | b67592ea | M. Mohan Kumar | |
2877 | e84861f7 | Venkateswararao Jujjuri | v9fs_string_init(&fullname); |
2878 | e84861f7 | Venkateswararao Jujjuri | pdu_unmarshal(pdu, offset, "dsdd", &fid, &name, &mode, &gid);
|
2879 | b67592ea | M. Mohan Kumar | |
2880 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(pdu->s, fid); |
2881 | b67592ea | M. Mohan Kumar | if (fidp == NULL) { |
2882 | b67592ea | M. Mohan Kumar | err = -ENOENT; |
2883 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2884 | b67592ea | M. Mohan Kumar | } |
2885 | e84861f7 | Venkateswararao Jujjuri | v9fs_string_sprintf(&fullname, "%s/%s", fidp->path.data, name.data);
|
2886 | e84861f7 | Venkateswararao Jujjuri | err = v9fs_co_mkdir(pdu->s, fullname.data, mode, fidp->uid, gid); |
2887 | e84861f7 | Venkateswararao Jujjuri | if (err < 0) { |
2888 | e84861f7 | Venkateswararao Jujjuri | goto out;
|
2889 | e84861f7 | Venkateswararao Jujjuri | } |
2890 | e84861f7 | Venkateswararao Jujjuri | err = v9fs_co_lstat(pdu->s, &fullname, &stbuf); |
2891 | e84861f7 | Venkateswararao Jujjuri | if (err < 0) { |
2892 | e84861f7 | Venkateswararao Jujjuri | goto out;
|
2893 | e84861f7 | Venkateswararao Jujjuri | } |
2894 | e84861f7 | Venkateswararao Jujjuri | stat_to_qid(&stbuf, &qid); |
2895 | e84861f7 | Venkateswararao Jujjuri | offset += pdu_marshal(pdu, offset, "Q", &qid);
|
2896 | e84861f7 | Venkateswararao Jujjuri | err = offset; |
2897 | b67592ea | M. Mohan Kumar | out:
|
2898 | 84dfb926 | Aneesh Kumar K.V | put_fid(pdu->s, fidp); |
2899 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2900 | e84861f7 | Venkateswararao Jujjuri | complete_pdu(pdu->s, pdu, err); |
2901 | e84861f7 | Venkateswararao Jujjuri | v9fs_string_free(&fullname); |
2902 | e84861f7 | Venkateswararao Jujjuri | v9fs_string_free(&name); |
2903 | b67592ea | M. Mohan Kumar | } |
2904 | b67592ea | M. Mohan Kumar | |
2905 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_xattrwalk(void *opaque) |
2906 | fa32ef88 | Aneesh Kumar K.V | { |
2907 | 670185a6 | Aneesh Kumar K.V | int64_t size; |
2908 | 670185a6 | Aneesh Kumar K.V | V9fsString name; |
2909 | fa32ef88 | Aneesh Kumar K.V | ssize_t err = 0;
|
2910 | 670185a6 | Aneesh Kumar K.V | size_t offset = 7;
|
2911 | fa32ef88 | Aneesh Kumar K.V | int32_t fid, newfid; |
2912 | 670185a6 | Aneesh Kumar K.V | V9fsFidState *file_fidp; |
2913 | 84dfb926 | Aneesh Kumar K.V | V9fsFidState *xattr_fidp = NULL;
|
2914 | 670185a6 | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
2915 | 670185a6 | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
2916 | fa32ef88 | Aneesh Kumar K.V | |
2917 | 670185a6 | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "dds", &fid, &newfid, &name);
|
2918 | 84dfb926 | Aneesh Kumar K.V | file_fidp = get_fid(s, fid); |
2919 | 670185a6 | Aneesh Kumar K.V | if (file_fidp == NULL) { |
2920 | fa32ef88 | Aneesh Kumar K.V | err = -ENOENT; |
2921 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
2922 | fa32ef88 | Aneesh Kumar K.V | } |
2923 | 670185a6 | Aneesh Kumar K.V | xattr_fidp = alloc_fid(s, newfid); |
2924 | 670185a6 | Aneesh Kumar K.V | if (xattr_fidp == NULL) { |
2925 | fa32ef88 | Aneesh Kumar K.V | err = -EINVAL; |
2926 | fa32ef88 | Aneesh Kumar K.V | goto out;
|
2927 | fa32ef88 | Aneesh Kumar K.V | } |
2928 | 670185a6 | Aneesh Kumar K.V | v9fs_string_copy(&xattr_fidp->path, &file_fidp->path); |
2929 | 670185a6 | Aneesh Kumar K.V | if (name.data[0] == 0) { |
2930 | fa32ef88 | Aneesh Kumar K.V | /*
|
2931 | fa32ef88 | Aneesh Kumar K.V | * listxattr request. Get the size first
|
2932 | fa32ef88 | Aneesh Kumar K.V | */
|
2933 | 670185a6 | Aneesh Kumar K.V | size = v9fs_co_llistxattr(s, &xattr_fidp->path, NULL, 0); |
2934 | 670185a6 | Aneesh Kumar K.V | if (size < 0) { |
2935 | 670185a6 | Aneesh Kumar K.V | err = size; |
2936 | 84dfb926 | Aneesh Kumar K.V | clunk_fid(s, xattr_fidp->fid); |
2937 | 670185a6 | Aneesh Kumar K.V | goto out;
|
2938 | fa32ef88 | Aneesh Kumar K.V | } |
2939 | 670185a6 | Aneesh Kumar K.V | /*
|
2940 | 670185a6 | Aneesh Kumar K.V | * Read the xattr value
|
2941 | 670185a6 | Aneesh Kumar K.V | */
|
2942 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fs.xattr.len = size; |
2943 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fid_type = P9_FID_XATTR; |
2944 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fs.xattr.copied_len = -1;
|
2945 | 670185a6 | Aneesh Kumar K.V | if (size) {
|
2946 | 7267c094 | Anthony Liguori | xattr_fidp->fs.xattr.value = g_malloc(size); |
2947 | 670185a6 | Aneesh Kumar K.V | err = v9fs_co_llistxattr(s, &xattr_fidp->path, |
2948 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fs.xattr.value, |
2949 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fs.xattr.len); |
2950 | 670185a6 | Aneesh Kumar K.V | if (err < 0) { |
2951 | 84dfb926 | Aneesh Kumar K.V | clunk_fid(s, xattr_fidp->fid); |
2952 | 670185a6 | Aneesh Kumar K.V | goto out;
|
2953 | 670185a6 | Aneesh Kumar K.V | } |
2954 | 670185a6 | Aneesh Kumar K.V | } |
2955 | 670185a6 | Aneesh Kumar K.V | offset += pdu_marshal(pdu, offset, "q", size);
|
2956 | 670185a6 | Aneesh Kumar K.V | err = offset; |
2957 | fa32ef88 | Aneesh Kumar K.V | } else {
|
2958 | fa32ef88 | Aneesh Kumar K.V | /*
|
2959 | fa32ef88 | Aneesh Kumar K.V | * specific xattr fid. We check for xattr
|
2960 | fa32ef88 | Aneesh Kumar K.V | * presence also collect the xattr size
|
2961 | fa32ef88 | Aneesh Kumar K.V | */
|
2962 | 670185a6 | Aneesh Kumar K.V | size = v9fs_co_lgetxattr(s, &xattr_fidp->path, |
2963 | 670185a6 | Aneesh Kumar K.V | &name, NULL, 0); |
2964 | 670185a6 | Aneesh Kumar K.V | if (size < 0) { |
2965 | 670185a6 | Aneesh Kumar K.V | err = size; |
2966 | 84dfb926 | Aneesh Kumar K.V | clunk_fid(s, xattr_fidp->fid); |
2967 | 670185a6 | Aneesh Kumar K.V | goto out;
|
2968 | fa32ef88 | Aneesh Kumar K.V | } |
2969 | 670185a6 | Aneesh Kumar K.V | /*
|
2970 | 670185a6 | Aneesh Kumar K.V | * Read the xattr value
|
2971 | 670185a6 | Aneesh Kumar K.V | */
|
2972 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fs.xattr.len = size; |
2973 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fid_type = P9_FID_XATTR; |
2974 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fs.xattr.copied_len = -1;
|
2975 | 670185a6 | Aneesh Kumar K.V | if (size) {
|
2976 | 7267c094 | Anthony Liguori | xattr_fidp->fs.xattr.value = g_malloc(size); |
2977 | 670185a6 | Aneesh Kumar K.V | err = v9fs_co_lgetxattr(s, &xattr_fidp->path, |
2978 | 670185a6 | Aneesh Kumar K.V | &name, xattr_fidp->fs.xattr.value, |
2979 | 670185a6 | Aneesh Kumar K.V | xattr_fidp->fs.xattr.len); |
2980 | 670185a6 | Aneesh Kumar K.V | if (err < 0) { |
2981 | 84dfb926 | Aneesh Kumar K.V | clunk_fid(s, xattr_fidp->fid); |
2982 | 670185a6 | Aneesh Kumar K.V | goto out;
|
2983 | 670185a6 | Aneesh Kumar K.V | } |
2984 | 670185a6 | Aneesh Kumar K.V | } |
2985 | 670185a6 | Aneesh Kumar K.V | offset += pdu_marshal(pdu, offset, "q", size);
|
2986 | 670185a6 | Aneesh Kumar K.V | err = offset; |
2987 | fa32ef88 | Aneesh Kumar K.V | } |
2988 | fa32ef88 | Aneesh Kumar K.V | out:
|
2989 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, file_fidp); |
2990 | 84dfb926 | Aneesh Kumar K.V | if (xattr_fidp) {
|
2991 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, xattr_fidp); |
2992 | 84dfb926 | Aneesh Kumar K.V | } |
2993 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
2994 | 670185a6 | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
2995 | 670185a6 | Aneesh Kumar K.V | v9fs_string_free(&name); |
2996 | fa32ef88 | Aneesh Kumar K.V | } |
2997 | fa32ef88 | Aneesh Kumar K.V | |
2998 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_xattrcreate(void *opaque) |
2999 | 10b468bd | Aneesh Kumar K.V | { |
3000 | 10b468bd | Aneesh Kumar K.V | int flags;
|
3001 | 10b468bd | Aneesh Kumar K.V | int32_t fid; |
3002 | f10ff58d | Aneesh Kumar K.V | int64_t size; |
3003 | 10b468bd | Aneesh Kumar K.V | ssize_t err = 0;
|
3004 | f10ff58d | Aneesh Kumar K.V | V9fsString name; |
3005 | f10ff58d | Aneesh Kumar K.V | size_t offset = 7;
|
3006 | f10ff58d | Aneesh Kumar K.V | V9fsFidState *file_fidp; |
3007 | f10ff58d | Aneesh Kumar K.V | V9fsFidState *xattr_fidp; |
3008 | f10ff58d | Aneesh Kumar K.V | V9fsPDU *pdu = opaque; |
3009 | f10ff58d | Aneesh Kumar K.V | V9fsState *s = pdu->s; |
3010 | 10b468bd | Aneesh Kumar K.V | |
3011 | f10ff58d | Aneesh Kumar K.V | pdu_unmarshal(pdu, offset, "dsqd",
|
3012 | f10ff58d | Aneesh Kumar K.V | &fid, &name, &size, &flags); |
3013 | 10b468bd | Aneesh Kumar K.V | |
3014 | 84dfb926 | Aneesh Kumar K.V | file_fidp = get_fid(s, fid); |
3015 | f10ff58d | Aneesh Kumar K.V | if (file_fidp == NULL) { |
3016 | 10b468bd | Aneesh Kumar K.V | err = -EINVAL; |
3017 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
3018 | 10b468bd | Aneesh Kumar K.V | } |
3019 | 10b468bd | Aneesh Kumar K.V | /* Make the file fid point to xattr */
|
3020 | f10ff58d | Aneesh Kumar K.V | xattr_fidp = file_fidp; |
3021 | f10ff58d | Aneesh Kumar K.V | xattr_fidp->fid_type = P9_FID_XATTR; |
3022 | f10ff58d | Aneesh Kumar K.V | xattr_fidp->fs.xattr.copied_len = 0;
|
3023 | f10ff58d | Aneesh Kumar K.V | xattr_fidp->fs.xattr.len = size; |
3024 | f10ff58d | Aneesh Kumar K.V | xattr_fidp->fs.xattr.flags = flags; |
3025 | f10ff58d | Aneesh Kumar K.V | v9fs_string_init(&xattr_fidp->fs.xattr.name); |
3026 | f10ff58d | Aneesh Kumar K.V | v9fs_string_copy(&xattr_fidp->fs.xattr.name, &name); |
3027 | f10ff58d | Aneesh Kumar K.V | if (size) {
|
3028 | 7267c094 | Anthony Liguori | xattr_fidp->fs.xattr.value = g_malloc(size); |
3029 | f10ff58d | Aneesh Kumar K.V | } else {
|
3030 | f10ff58d | Aneesh Kumar K.V | xattr_fidp->fs.xattr.value = NULL;
|
3031 | f10ff58d | Aneesh Kumar K.V | } |
3032 | f10ff58d | Aneesh Kumar K.V | err = offset; |
3033 | 84dfb926 | Aneesh Kumar K.V | put_fid(s, file_fidp); |
3034 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
3035 | f10ff58d | Aneesh Kumar K.V | complete_pdu(s, pdu, err); |
3036 | f10ff58d | Aneesh Kumar K.V | v9fs_string_free(&name); |
3037 | 10b468bd | Aneesh Kumar K.V | } |
3038 | fa32ef88 | Aneesh Kumar K.V | |
3039 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_readlink(void *opaque) |
3040 | df0973a4 | M. Mohan Kumar | { |
3041 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
3042 | 7a5ca31e | Venkateswararao Jujjuri | size_t offset = 7;
|
3043 | 7a5ca31e | Venkateswararao Jujjuri | V9fsString target; |
3044 | df0973a4 | M. Mohan Kumar | int32_t fid; |
3045 | df0973a4 | M. Mohan Kumar | int err = 0; |
3046 | df0973a4 | M. Mohan Kumar | V9fsFidState *fidp; |
3047 | df0973a4 | M. Mohan Kumar | |
3048 | 7a5ca31e | Venkateswararao Jujjuri | pdu_unmarshal(pdu, offset, "d", &fid);
|
3049 | 84dfb926 | Aneesh Kumar K.V | fidp = get_fid(pdu->s, fid); |
3050 | df0973a4 | M. Mohan Kumar | if (fidp == NULL) { |
3051 | df0973a4 | M. Mohan Kumar | err = -ENOENT; |
3052 | 84dfb926 | Aneesh Kumar K.V | goto out_nofid;
|
3053 | df0973a4 | M. Mohan Kumar | } |
3054 | df0973a4 | M. Mohan Kumar | |
3055 | 7a5ca31e | Venkateswararao Jujjuri | v9fs_string_init(&target); |
3056 | 7a5ca31e | Venkateswararao Jujjuri | err = v9fs_co_readlink(pdu->s, &fidp->path, &target); |
3057 | 7a5ca31e | Venkateswararao Jujjuri | if (err < 0) { |
3058 | 7a5ca31e | Venkateswararao Jujjuri | goto out;
|
3059 | 7a5ca31e | Venkateswararao Jujjuri | } |
3060 | 7a5ca31e | Venkateswararao Jujjuri | offset += pdu_marshal(pdu, offset, "s", &target);
|
3061 | 7a5ca31e | Venkateswararao Jujjuri | err = offset; |
3062 | 7a5ca31e | Venkateswararao Jujjuri | v9fs_string_free(&target); |
3063 | df0973a4 | M. Mohan Kumar | out:
|
3064 | 84dfb926 | Aneesh Kumar K.V | put_fid(pdu->s, fidp); |
3065 | 84dfb926 | Aneesh Kumar K.V | out_nofid:
|
3066 | 7a5ca31e | Venkateswararao Jujjuri | complete_pdu(pdu->s, pdu, err); |
3067 | df0973a4 | M. Mohan Kumar | } |
3068 | df0973a4 | M. Mohan Kumar | |
3069 | ff06030f | Venkateswararao Jujjuri (JV) | static CoroutineEntry *pdu_co_handlers[] = {
|
3070 | c18e2f94 | Sripathi Kodi | [P9_TREADDIR] = v9fs_readdir, |
3071 | be940c87 | M. Mohan Kumar | [P9_TSTATFS] = v9fs_statfs, |
3072 | 00ede4c2 | Sripathi Kodi | [P9_TGETATTR] = v9fs_getattr, |
3073 | c79ce737 | Sripathi Kodi | [P9_TSETATTR] = v9fs_setattr, |
3074 | fa32ef88 | Aneesh Kumar K.V | [P9_TXATTRWALK] = v9fs_xattrwalk, |
3075 | 10b468bd | Aneesh Kumar K.V | [P9_TXATTRCREATE] = v9fs_xattrcreate, |
3076 | 5268cecc | M. Mohan Kumar | [P9_TMKNOD] = v9fs_mknod, |
3077 | c7b4b0b3 | M. Mohan Kumar | [P9_TRENAME] = v9fs_rename, |
3078 | 82cc3ee8 | M. Mohan Kumar | [P9_TLOCK] = v9fs_lock, |
3079 | 8f354003 | M. Mohan Kumar | [P9_TGETLOCK] = v9fs_getlock, |
3080 | 89bf6593 | Aneesh Kumar K.V | [P9_TRENAMEAT] = v9fs_renameat, |
3081 | df0973a4 | M. Mohan Kumar | [P9_TREADLINK] = v9fs_readlink, |
3082 | 7834cf77 | Aneesh Kumar K.V | [P9_TUNLINKAT] = v9fs_unlinkat, |
3083 | b67592ea | M. Mohan Kumar | [P9_TMKDIR] = v9fs_mkdir, |
3084 | 9f107513 | Anthony Liguori | [P9_TVERSION] = v9fs_version, |
3085 | 771e9d4c | M. Mohan Kumar | [P9_TLOPEN] = v9fs_open, |
3086 | 9f107513 | Anthony Liguori | [P9_TATTACH] = v9fs_attach, |
3087 | 9f107513 | Anthony Liguori | [P9_TSTAT] = v9fs_stat, |
3088 | 9f107513 | Anthony Liguori | [P9_TWALK] = v9fs_walk, |
3089 | 9f107513 | Anthony Liguori | [P9_TCLUNK] = v9fs_clunk, |
3090 | b41e95d3 | Venkateswararao Jujjuri (JV) | [P9_TFSYNC] = v9fs_fsync, |
3091 | 9f107513 | Anthony Liguori | [P9_TOPEN] = v9fs_open, |
3092 | 9f107513 | Anthony Liguori | [P9_TREAD] = v9fs_read, |
3093 | 9f107513 | Anthony Liguori | #if 0
|
3094 | 9f107513 | Anthony Liguori | [P9_TAUTH] = v9fs_auth,
|
3095 | 9f107513 | Anthony Liguori | #endif
|
3096 | 9f107513 | Anthony Liguori | [P9_TFLUSH] = v9fs_flush, |
3097 | b2c224be | Venkateswararao Jujjuri (JV) | [P9_TLINK] = v9fs_link, |
3098 | 08c60fc9 | Venkateswararao Jujjuri (JV) | [P9_TSYMLINK] = v9fs_symlink, |
3099 | 9f107513 | Anthony Liguori | [P9_TCREATE] = v9fs_create, |
3100 | c1568af5 | Venkateswararao Jujjuri (JV) | [P9_TLCREATE] = v9fs_lcreate, |
3101 | 9f107513 | Anthony Liguori | [P9_TWRITE] = v9fs_write, |
3102 | 9f107513 | Anthony Liguori | [P9_TWSTAT] = v9fs_wstat, |
3103 | 9f107513 | Anthony Liguori | [P9_TREMOVE] = v9fs_remove, |
3104 | 9f107513 | Anthony Liguori | }; |
3105 | 9f107513 | Anthony Liguori | |
3106 | ff06030f | Venkateswararao Jujjuri (JV) | static void v9fs_op_not_supp(void *opaque) |
3107 | 5c3234c6 | Aneesh Kumar K.V | { |
3108 | ff06030f | Venkateswararao Jujjuri (JV) | V9fsPDU *pdu = opaque; |
3109 | ff06030f | Venkateswararao Jujjuri (JV) | complete_pdu(pdu->s, pdu, -EOPNOTSUPP); |
3110 | 5c3234c6 | Aneesh Kumar K.V | } |
3111 | 5c3234c6 | Aneesh Kumar K.V | |
3112 | 9f107513 | Anthony Liguori | static void submit_pdu(V9fsState *s, V9fsPDU *pdu) |
3113 | 9f107513 | Anthony Liguori | { |
3114 | ff06030f | Venkateswararao Jujjuri (JV) | Coroutine *co; |
3115 | ff06030f | Venkateswararao Jujjuri (JV) | CoroutineEntry *handler; |
3116 | 9f107513 | Anthony Liguori | |
3117 | 9f107513 | Anthony Liguori | if (debug_9p_pdu) {
|
3118 | 9f107513 | Anthony Liguori | pprint_pdu(pdu); |
3119 | 9f107513 | Anthony Liguori | } |
3120 | ff06030f | Venkateswararao Jujjuri (JV) | if (pdu->id >= ARRAY_SIZE(pdu_co_handlers) ||
|
3121 | ff06030f | Venkateswararao Jujjuri (JV) | (pdu_co_handlers[pdu->id] == NULL)) {
|
3122 | 5c3234c6 | Aneesh Kumar K.V | handler = v9fs_op_not_supp; |
3123 | 5c3234c6 | Aneesh Kumar K.V | } else {
|
3124 | ff06030f | Venkateswararao Jujjuri (JV) | handler = pdu_co_handlers[pdu->id]; |
3125 | 5c3234c6 | Aneesh Kumar K.V | } |
3126 | ff06030f | Venkateswararao Jujjuri (JV) | co = qemu_coroutine_create(handler); |
3127 | ff06030f | Venkateswararao Jujjuri (JV) | qemu_coroutine_enter(co, pdu); |
3128 | 9f107513 | Anthony Liguori | } |
3129 | 9f107513 | Anthony Liguori | |
3130 | f4f61d27 | Aneesh Kumar K.V | void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq)
|
3131 | 9f107513 | Anthony Liguori | { |
3132 | 9f107513 | Anthony Liguori | V9fsState *s = (V9fsState *)vdev; |
3133 | 9f107513 | Anthony Liguori | V9fsPDU *pdu; |
3134 | 9f107513 | Anthony Liguori | ssize_t len; |
3135 | 9f107513 | Anthony Liguori | |
3136 | 9f107513 | Anthony Liguori | while ((pdu = alloc_pdu(s)) &&
|
3137 | 9f107513 | Anthony Liguori | (len = virtqueue_pop(vq, &pdu->elem)) != 0) {
|
3138 | 9f107513 | Anthony Liguori | uint8_t *ptr; |
3139 | ff06030f | Venkateswararao Jujjuri (JV) | pdu->s = s; |
3140 | 9f107513 | Anthony Liguori | BUG_ON(pdu->elem.out_num == 0 || pdu->elem.in_num == 0); |
3141 | 9f107513 | Anthony Liguori | BUG_ON(pdu->elem.out_sg[0].iov_len < 7); |
3142 | 9f107513 | Anthony Liguori | |
3143 | 9f107513 | Anthony Liguori | ptr = pdu->elem.out_sg[0].iov_base;
|
3144 | 9f107513 | Anthony Liguori | |
3145 | 9f107513 | Anthony Liguori | memcpy(&pdu->size, ptr, 4);
|
3146 | 9f107513 | Anthony Liguori | pdu->id = ptr[4];
|
3147 | 9f107513 | Anthony Liguori | memcpy(&pdu->tag, ptr + 5, 2); |
3148 | 9f107513 | Anthony Liguori | submit_pdu(s, pdu); |
3149 | 9f107513 | Anthony Liguori | } |
3150 | 9f107513 | Anthony Liguori | free_pdu(s, pdu); |
3151 | 9f107513 | Anthony Liguori | } |
3152 | 7a462745 | Aneesh Kumar K.V | |
3153 | 7a462745 | Aneesh Kumar K.V | void virtio_9p_set_fd_limit(void) |
3154 | 7a462745 | Aneesh Kumar K.V | { |
3155 | 7a462745 | Aneesh Kumar K.V | struct rlimit rlim;
|
3156 | 7a462745 | Aneesh Kumar K.V | if (getrlimit(RLIMIT_NOFILE, &rlim) < 0) { |
3157 | 7a462745 | Aneesh Kumar K.V | fprintf(stderr, "Failed to get the resource limit\n");
|
3158 | 7a462745 | Aneesh Kumar K.V | exit(1);
|
3159 | 7a462745 | Aneesh Kumar K.V | } |
3160 | 7a462745 | Aneesh Kumar K.V | open_fd_hw = rlim.rlim_cur - MIN(400, rlim.rlim_cur/3); |
3161 | 7a462745 | Aneesh Kumar K.V | open_fd_rc = rlim.rlim_cur/2;
|
3162 | 7a462745 | Aneesh Kumar K.V | } |