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74db920c GS |
1 | /* |
2 | * Virtio 9p | |
3 | * | |
4 | * Copyright IBM, Corp. 2010 | |
5 | * | |
6 | * Authors: | |
7 | * Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | |
8 | * | |
9 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
10 | * the COPYING file in the top-level directory. | |
11 | * | |
12 | */ | |
13 | #ifndef _FILEOP_H | |
14 | #define _FILEOP_H | |
15 | #include <sys/types.h> | |
16 | #include <dirent.h> | |
17 | #include <sys/time.h> | |
18 | #include <utime.h> | |
19 | #include <sys/stat.h> | |
20 | #include <sys/uio.h> | |
758e8e38 | 21 | #include <sys/vfs.h> |
0174fe73 | 22 | |
758e8e38 VJ |
23 | #define SM_LOCAL_MODE_BITS 0600 |
24 | #define SM_LOCAL_DIR_MODE_BITS 0700 | |
25 | ||
26 | typedef enum | |
27 | { | |
12848bfc AK |
28 | /* |
29 | * Server will try to set uid/gid. | |
30 | * On failure ignore the error. | |
31 | */ | |
32 | SM_NONE = 0, | |
33 | /* | |
34 | * uid/gid set on fileserver files | |
35 | */ | |
36 | SM_PASSTHROUGH = 1, | |
37 | /* | |
38 | * uid/gid part of xattr | |
39 | */ | |
40 | SM_MAPPED, | |
758e8e38 VJ |
41 | } SecModel; |
42 | ||
43 | typedef struct FsCred | |
44 | { | |
45 | uid_t fc_uid; | |
46 | gid_t fc_gid; | |
47 | mode_t fc_mode; | |
48 | dev_t fc_rdev; | |
49 | } FsCred; | |
74db920c | 50 | |
fc22118d AK |
51 | struct xattr_operations; |
52 | ||
74db920c GS |
53 | typedef struct FsContext |
54 | { | |
55 | char *fs_root; | |
758e8e38 | 56 | SecModel fs_sm; |
74db920c | 57 | uid_t uid; |
fc22118d | 58 | struct xattr_operations **xops; |
74db920c GS |
59 | } FsContext; |
60 | ||
2289be19 AK |
61 | typedef struct V9fsPath { |
62 | int16_t size; | |
63 | char *data; | |
64 | } V9fsPath; | |
65 | ||
64b85a8f | 66 | void cred_init(FsCred *); |
758e8e38 | 67 | |
74db920c GS |
68 | typedef struct FileOperations |
69 | { | |
0174fe73 | 70 | int (*init)(struct FsContext *); |
2289be19 AK |
71 | int (*lstat)(FsContext *, V9fsPath *, struct stat *); |
72 | ssize_t (*readlink)(FsContext *, V9fsPath *, char *, size_t); | |
73 | int (*chmod)(FsContext *, V9fsPath *, FsCred *); | |
74 | int (*chown)(FsContext *, V9fsPath *, FsCred *); | |
75 | int (*mknod)(FsContext *, V9fsPath *, const char *, FsCred *); | |
76 | int (*utimensat)(FsContext *, V9fsPath *, const struct timespec *); | |
5bae1900 | 77 | int (*remove)(FsContext *, const char *); |
2289be19 AK |
78 | int (*symlink)(FsContext *, const char *, V9fsPath *, |
79 | const char *, FsCred *); | |
80 | int (*link)(FsContext *, V9fsPath *, V9fsPath *, const char *); | |
131dcb25 AL |
81 | int (*setuid)(FsContext *, uid_t); |
82 | int (*close)(FsContext *, int); | |
83 | int (*closedir)(FsContext *, DIR *); | |
2289be19 AK |
84 | DIR *(*opendir)(FsContext *, V9fsPath *); |
85 | int (*open)(FsContext *, V9fsPath *, int); | |
86 | int (*open2)(FsContext *, V9fsPath *, const char *, int, FsCred *); | |
a9231555 AL |
87 | void (*rewinddir)(FsContext *, DIR *); |
88 | off_t (*telldir)(FsContext *, DIR *); | |
5f524c1e | 89 | int (*readdir_r)(FsContext *, DIR *, struct dirent *, struct dirent **); |
a9231555 | 90 | void (*seekdir)(FsContext *, DIR *, off_t); |
56d15a53 SG |
91 | ssize_t (*preadv)(FsContext *, int, const struct iovec *, int, off_t); |
92 | ssize_t (*pwritev)(FsContext *, int, const struct iovec *, int, off_t); | |
2289be19 | 93 | int (*mkdir)(FsContext *, V9fsPath *, const char *, FsCred *); |
c494dd6f | 94 | int (*fstat)(FsContext *, int, struct stat *); |
8cf89e00 | 95 | int (*rename)(FsContext *, const char *, const char *); |
2289be19 | 96 | int (*truncate)(FsContext *, V9fsPath *, off_t); |
49594973 | 97 | int (*fsync)(FsContext *, int, int); |
2289be19 AK |
98 | int (*statfs)(FsContext *s, V9fsPath *path, struct statfs *stbuf); |
99 | ssize_t (*lgetxattr)(FsContext *, V9fsPath *, | |
fa32ef88 | 100 | const char *, void *, size_t); |
2289be19 AK |
101 | ssize_t (*llistxattr)(FsContext *, V9fsPath *, void *, size_t); |
102 | int (*lsetxattr)(FsContext *, V9fsPath *, | |
10b468bd | 103 | const char *, void *, size_t, int); |
2289be19 AK |
104 | int (*lremovexattr)(FsContext *, V9fsPath *, const char *); |
105 | int (*name_to_path)(FsContext *, V9fsPath *, const char *, V9fsPath *); | |
106 | int (*renameat)(FsContext *ctx, V9fsPath *olddir, const char *old_name, | |
107 | V9fsPath *newdir, const char *new_name); | |
108 | int (*unlinkat)(FsContext *ctx, V9fsPath *dir, const char *name, int flags); | |
74db920c GS |
109 | void *opaque; |
110 | } FileOperations; | |
fc22118d | 111 | |
74db920c | 112 | #endif |