root / fsdev / file-op-9p.h @ d2d979c6
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1 | 74db920c | Gautham R Shenoy | /*
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2 | 74db920c | Gautham R Shenoy | * Virtio 9p
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3 | 74db920c | Gautham R Shenoy | *
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4 | 74db920c | Gautham R Shenoy | * Copyright IBM, Corp. 2010
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5 | 74db920c | Gautham R Shenoy | *
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6 | 74db920c | Gautham R Shenoy | * Authors:
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7 | 74db920c | Gautham R Shenoy | * Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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8 | 74db920c | Gautham R Shenoy | *
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9 | 74db920c | Gautham R Shenoy | * This work is licensed under the terms of the GNU GPL, version 2. See
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10 | 74db920c | Gautham R Shenoy | * the COPYING file in the top-level directory.
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11 | 74db920c | Gautham R Shenoy | *
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12 | 74db920c | Gautham R Shenoy | */
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13 | 74db920c | Gautham R Shenoy | #ifndef _FILEOP_H
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14 | 74db920c | Gautham R Shenoy | #define _FILEOP_H
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15 | 74db920c | Gautham R Shenoy | #include <sys/types.h> |
16 | 74db920c | Gautham R Shenoy | #include <dirent.h> |
17 | 74db920c | Gautham R Shenoy | #include <sys/time.h> |
18 | 74db920c | Gautham R Shenoy | #include <utime.h> |
19 | 74db920c | Gautham R Shenoy | #include <sys/stat.h> |
20 | 74db920c | Gautham R Shenoy | #include <sys/uio.h> |
21 | 758e8e38 | Venkateswararao Jujjuri (JV) | #include <sys/vfs.h> |
22 | 758e8e38 | Venkateswararao Jujjuri (JV) | #define SM_LOCAL_MODE_BITS 0600 |
23 | 758e8e38 | Venkateswararao Jujjuri (JV) | #define SM_LOCAL_DIR_MODE_BITS 0700 |
24 | 758e8e38 | Venkateswararao Jujjuri (JV) | |
25 | 758e8e38 | Venkateswararao Jujjuri (JV) | typedef enum |
26 | 758e8e38 | Venkateswararao Jujjuri (JV) | { |
27 | 12848bfc | Aneesh Kumar K.V | /*
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28 | 12848bfc | Aneesh Kumar K.V | * Server will try to set uid/gid.
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29 | 12848bfc | Aneesh Kumar K.V | * On failure ignore the error.
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30 | 12848bfc | Aneesh Kumar K.V | */
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31 | 12848bfc | Aneesh Kumar K.V | SM_NONE = 0,
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32 | 12848bfc | Aneesh Kumar K.V | /*
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33 | 12848bfc | Aneesh Kumar K.V | * uid/gid set on fileserver files
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34 | 12848bfc | Aneesh Kumar K.V | */
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35 | 12848bfc | Aneesh Kumar K.V | SM_PASSTHROUGH = 1,
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36 | 12848bfc | Aneesh Kumar K.V | /*
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37 | 12848bfc | Aneesh Kumar K.V | * uid/gid part of xattr
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38 | 12848bfc | Aneesh Kumar K.V | */
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39 | 12848bfc | Aneesh Kumar K.V | SM_MAPPED, |
40 | 758e8e38 | Venkateswararao Jujjuri (JV) | } SecModel; |
41 | 758e8e38 | Venkateswararao Jujjuri (JV) | |
42 | 758e8e38 | Venkateswararao Jujjuri (JV) | typedef struct FsCred |
43 | 758e8e38 | Venkateswararao Jujjuri (JV) | { |
44 | 758e8e38 | Venkateswararao Jujjuri (JV) | uid_t fc_uid; |
45 | 758e8e38 | Venkateswararao Jujjuri (JV) | gid_t fc_gid; |
46 | 758e8e38 | Venkateswararao Jujjuri (JV) | mode_t fc_mode; |
47 | 758e8e38 | Venkateswararao Jujjuri (JV) | dev_t fc_rdev; |
48 | 758e8e38 | Venkateswararao Jujjuri (JV) | } FsCred; |
49 | 74db920c | Gautham R Shenoy | |
50 | fc22118d | Aneesh Kumar K.V | struct xattr_operations;
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51 | fc22118d | Aneesh Kumar K.V | |
52 | 74db920c | Gautham R Shenoy | typedef struct FsContext |
53 | 74db920c | Gautham R Shenoy | { |
54 | 74db920c | Gautham R Shenoy | char *fs_root;
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55 | 758e8e38 | Venkateswararao Jujjuri (JV) | SecModel fs_sm; |
56 | 74db920c | Gautham R Shenoy | uid_t uid; |
57 | fc22118d | Aneesh Kumar K.V | struct xattr_operations **xops;
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58 | 74db920c | Gautham R Shenoy | } FsContext; |
59 | 74db920c | Gautham R Shenoy | |
60 | 64b85a8f | Blue Swirl | void cred_init(FsCred *);
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61 | 758e8e38 | Venkateswararao Jujjuri (JV) | |
62 | 74db920c | Gautham R Shenoy | typedef struct FileOperations |
63 | 74db920c | Gautham R Shenoy | { |
64 | 131dcb25 | Anthony Liguori | int (*lstat)(FsContext *, const char *, struct stat *); |
65 | 131dcb25 | Anthony Liguori | ssize_t (*readlink)(FsContext *, const char *, char *, size_t); |
66 | e95ead32 | Venkateswararao Jujjuri (JV) | int (*chmod)(FsContext *, const char *, FsCred *); |
67 | f7613bee | Venkateswararao Jujjuri (JV) | int (*chown)(FsContext *, const char *, FsCred *); |
68 | 1c293312 | Venkateswararao Jujjuri (JV) | int (*mknod)(FsContext *, const char *, FsCred *); |
69 | 74bc02b2 | M. Mohan Kumar | int (*utimensat)(FsContext *, const char *, const struct timespec *); |
70 | 5bae1900 | Anthony Liguori | int (*remove)(FsContext *, const char *); |
71 | 879c2813 | Venkateswararao Jujjuri (JV) | int (*symlink)(FsContext *, const char *, const char *, FsCred *); |
72 | c494dd6f | Anthony Liguori | int (*link)(FsContext *, const char *, const char *); |
73 | 131dcb25 | Anthony Liguori | int (*setuid)(FsContext *, uid_t);
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74 | 131dcb25 | Anthony Liguori | int (*close)(FsContext *, int); |
75 | 131dcb25 | Anthony Liguori | int (*closedir)(FsContext *, DIR *);
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76 | a6568fe2 | Anthony Liguori | DIR *(*opendir)(FsContext *, const char *); |
77 | a6568fe2 | Anthony Liguori | int (*open)(FsContext *, const char *, int); |
78 | 4750a96f | Venkateswararao Jujjuri (JV) | int (*open2)(FsContext *, const char *, int, FsCred *); |
79 | a9231555 | Anthony Liguori | void (*rewinddir)(FsContext *, DIR *);
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80 | a9231555 | Anthony Liguori | off_t (*telldir)(FsContext *, DIR *); |
81 | a9231555 | Anthony Liguori | struct dirent *(*readdir)(FsContext *, DIR *);
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82 | a9231555 | Anthony Liguori | void (*seekdir)(FsContext *, DIR *, off_t);
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83 | 56d15a53 | Sanchit Garg | ssize_t (*preadv)(FsContext *, int, const struct iovec *, int, off_t); |
84 | 56d15a53 | Sanchit Garg | ssize_t (*pwritev)(FsContext *, int, const struct iovec *, int, off_t); |
85 | 00ec5c37 | Venkateswararao Jujjuri (JV) | int (*mkdir)(FsContext *, const char *, FsCred *); |
86 | c494dd6f | Anthony Liguori | int (*fstat)(FsContext *, int, struct stat *); |
87 | 8cf89e00 | Anthony Liguori | int (*rename)(FsContext *, const char *, const char *); |
88 | 8cf89e00 | Anthony Liguori | int (*truncate)(FsContext *, const char *, off_t); |
89 | 49594973 | Venkateswararao Jujjuri (JV) | int (*fsync)(FsContext *, int, int); |
90 | be940c87 | M. Mohan Kumar | int (*statfs)(FsContext *s, const char *path, struct statfs *stbuf); |
91 | fa32ef88 | Aneesh Kumar K.V | ssize_t (*lgetxattr)(FsContext *, const char *, |
92 | fa32ef88 | Aneesh Kumar K.V | const char *, void *, size_t); |
93 | fa32ef88 | Aneesh Kumar K.V | ssize_t (*llistxattr)(FsContext *, const char *, void *, size_t); |
94 | 10b468bd | Aneesh Kumar K.V | int (*lsetxattr)(FsContext *, const char *, |
95 | 10b468bd | Aneesh Kumar K.V | const char *, void *, size_t, int); |
96 | 9ed3ef26 | Aneesh Kumar K.V | int (*lremovexattr)(FsContext *, const char *, const char *); |
97 | 74db920c | Gautham R Shenoy | void *opaque;
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98 | 74db920c | Gautham R Shenoy | } FileOperations; |
99 | fc22118d | Aneesh Kumar K.V | |
100 | fc22118d | Aneesh Kumar K.V | static inline const char *rpath(FsContext *ctx, const char *path) |
101 | fc22118d | Aneesh Kumar K.V | { |
102 | fc22118d | Aneesh Kumar K.V | /* FIXME: so wrong... */
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103 | fc22118d | Aneesh Kumar K.V | static char buffer[4096]; |
104 | fc22118d | Aneesh Kumar K.V | snprintf(buffer, sizeof(buffer), "%s/%s", ctx->fs_root, path); |
105 | fc22118d | Aneesh Kumar K.V | return buffer;
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106 | fc22118d | Aneesh Kumar K.V | } |
107 | 74db920c | Gautham R Shenoy | #endif |