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Commit | Line | Data |
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74db920c | 1 | /* |
af8b38b0 | 2 | * 9p |
74db920c GS |
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 | */ | |
121d0712 MA |
13 | |
14 | #ifndef FILE_OP_9P_H | |
15 | #define FILE_OP_9P_H | |
16 | ||
74db920c | 17 | #include <dirent.h> |
74db920c | 18 | #include <utime.h> |
758e8e38 | 19 | #include <sys/vfs.h> |
b8bbdb88 | 20 | #include "qemu-fsdev-throttle.h" |
0174fe73 | 21 | |
758e8e38 VJ |
22 | #define SM_LOCAL_MODE_BITS 0600 |
23 | #define SM_LOCAL_DIR_MODE_BITS 0700 | |
24 | ||
1a8d0bb3 | 25 | typedef struct FsCred { |
758e8e38 VJ |
26 | uid_t fc_uid; |
27 | gid_t fc_gid; | |
28 | mode_t fc_mode; | |
29 | dev_t fc_rdev; | |
30 | } FsCred; | |
74db920c | 31 | |
1a8d0bb3 GK |
32 | typedef struct FsContext FsContext; |
33 | typedef struct V9fsPath V9fsPath; | |
e06a765e | 34 | |
1a8d0bb3 GK |
35 | typedef struct ExtendedOps { |
36 | int (*get_st_gen)(FsContext *, V9fsPath *, mode_t, uint64_t *); | |
37 | } ExtendedOps; | |
fc22118d | 38 | |
d3ab98e6 | 39 | /* export flags */ |
c98f1d4a AK |
40 | #define V9FS_IMMEDIATE_WRITEOUT 0x00000001 |
41 | #define V9FS_PATHNAME_FSCONTEXT 0x00000002 | |
b97400ca AK |
42 | /* |
43 | * uid/gid set on fileserver files | |
44 | */ | |
45 | #define V9FS_SM_PASSTHROUGH 0x00000004 | |
46 | /* | |
47 | * uid/gid part of xattr | |
48 | */ | |
49 | #define V9FS_SM_MAPPED 0x00000008 | |
50 | /* | |
51 | * Server will try to set uid/gid. | |
52 | * On failure ignore the error. | |
53 | */ | |
54 | #define V9FS_SM_NONE 0x00000010 | |
2c30dd74 AK |
55 | /* |
56 | * uid/gid part of .virtfs_meatadata namespace | |
57 | */ | |
58 | #define V9FS_SM_MAPPED_FILE 0x00000020 | |
59 | #define V9FS_RDONLY 0x00000040 | |
60 | #define V9FS_PROXY_SOCK_FD 0x00000080 | |
61 | #define V9FS_PROXY_SOCK_NAME 0x00000100 | |
1a6ed33c AM |
62 | /* |
63 | * multidevs option (either one of the two applies exclusively) | |
64 | */ | |
65 | #define V9FS_REMAP_INODES 0x00000200 | |
66 | #define V9FS_FORBID_MULTIDEVS 0x00000400 | |
c418f935 CS |
67 | /* |
68 | * Disables certain performance warnings from being logged on host side. | |
69 | */ | |
70 | #define V9FS_NO_PERF_WARN 0x00000800 | |
b97400ca | 71 | |
2c30dd74 | 72 | #define V9FS_SEC_MASK 0x0000003C |
d3ab98e6 | 73 | |
2c74c2cb | 74 | |
99519f0a | 75 | typedef struct FileOperations FileOperations; |
01847522 GK |
76 | typedef struct XattrOperations XattrOperations; |
77 | ||
99519f0a AK |
78 | /* |
79 | * Structure to store the various fsdev's passed through command line. | |
80 | */ | |
81 | typedef struct FsDriverEntry { | |
82 | char *fsdev_id; | |
83 | char *path; | |
84 | int export_flags; | |
85 | FileOperations *ops; | |
b8bbdb88 | 86 | FsThrottle fst; |
b96feb2c TS |
87 | mode_t fmode; |
88 | mode_t dmode; | |
99519f0a | 89 | } FsDriverEntry; |
2c74c2cb | 90 | |
1a8d0bb3 | 91 | struct FsContext { |
74db920c | 92 | uid_t uid; |
b97400ca | 93 | char *fs_root; |
d3ab98e6 | 94 | int export_flags; |
01847522 | 95 | XattrOperations **xops; |
1a8d0bb3 | 96 | ExtendedOps exops; |
b8bbdb88 | 97 | FsThrottle *fst; |
532decb7 AK |
98 | /* fs driver specific data */ |
99 | void *private; | |
b96feb2c TS |
100 | mode_t fmode; |
101 | mode_t dmode; | |
1a8d0bb3 | 102 | }; |
74db920c | 103 | |
1a8d0bb3 | 104 | struct V9fsPath { |
2f008a8c | 105 | uint16_t size; |
2289be19 | 106 | char *data; |
1a8d0bb3 | 107 | }; |
2289be19 | 108 | |
cc720ddb AK |
109 | typedef union V9fsFidOpenState V9fsFidOpenState; |
110 | ||
64b85a8f | 111 | void cred_init(FsCred *); |
758e8e38 | 112 | |
87b804ec | 113 | struct FileOperations { |
91cda4e8 | 114 | int (*parse_opts)(QemuOpts *, FsDriverEntry *, Error **errp); |
65603a80 | 115 | int (*init)(FsContext *, Error **errp); |
1a8d0bb3 | 116 | void (*cleanup)(FsContext *); |
2289be19 AK |
117 | int (*lstat)(FsContext *, V9fsPath *, struct stat *); |
118 | ssize_t (*readlink)(FsContext *, V9fsPath *, char *, size_t); | |
119 | int (*chmod)(FsContext *, V9fsPath *, FsCred *); | |
120 | int (*chown)(FsContext *, V9fsPath *, FsCred *); | |
121 | int (*mknod)(FsContext *, V9fsPath *, const char *, FsCred *); | |
122 | int (*utimensat)(FsContext *, V9fsPath *, const struct timespec *); | |
5bae1900 | 123 | int (*remove)(FsContext *, const char *); |
2289be19 AK |
124 | int (*symlink)(FsContext *, const char *, V9fsPath *, |
125 | const char *, FsCred *); | |
126 | int (*link)(FsContext *, V9fsPath *, V9fsPath *, const char *); | |
131dcb25 | 127 | int (*setuid)(FsContext *, uid_t); |
cc720ddb AK |
128 | int (*close)(FsContext *, V9fsFidOpenState *); |
129 | int (*closedir)(FsContext *, V9fsFidOpenState *); | |
130 | int (*opendir)(FsContext *, V9fsPath *, V9fsFidOpenState *); | |
131 | int (*open)(FsContext *, V9fsPath *, int, V9fsFidOpenState *); | |
132 | int (*open2)(FsContext *, V9fsPath *, const char *, | |
133 | int, FsCred *, V9fsFidOpenState *); | |
134 | void (*rewinddir)(FsContext *, V9fsFidOpenState *); | |
135 | off_t (*telldir)(FsContext *, V9fsFidOpenState *); | |
635324e8 | 136 | struct dirent * (*readdir)(FsContext *, V9fsFidOpenState *); |
cc720ddb AK |
137 | void (*seekdir)(FsContext *, V9fsFidOpenState *, off_t); |
138 | ssize_t (*preadv)(FsContext *, V9fsFidOpenState *, | |
139 | const struct iovec *, int, off_t); | |
140 | ssize_t (*pwritev)(FsContext *, V9fsFidOpenState *, | |
141 | const struct iovec *, int, off_t); | |
2289be19 | 142 | int (*mkdir)(FsContext *, V9fsPath *, const char *, FsCred *); |
8b888272 | 143 | int (*fstat)(FsContext *, int, V9fsFidOpenState *, struct stat *); |
8cf89e00 | 144 | int (*rename)(FsContext *, const char *, const char *); |
2289be19 | 145 | int (*truncate)(FsContext *, V9fsPath *, off_t); |
8b888272 | 146 | int (*fsync)(FsContext *, int, V9fsFidOpenState *, int); |
2289be19 AK |
147 | int (*statfs)(FsContext *s, V9fsPath *path, struct statfs *stbuf); |
148 | ssize_t (*lgetxattr)(FsContext *, V9fsPath *, | |
fa32ef88 | 149 | const char *, void *, size_t); |
2289be19 AK |
150 | ssize_t (*llistxattr)(FsContext *, V9fsPath *, void *, size_t); |
151 | int (*lsetxattr)(FsContext *, V9fsPath *, | |
10b468bd | 152 | const char *, void *, size_t, int); |
2289be19 AK |
153 | int (*lremovexattr)(FsContext *, V9fsPath *, const char *); |
154 | int (*name_to_path)(FsContext *, V9fsPath *, const char *, V9fsPath *); | |
155 | int (*renameat)(FsContext *ctx, V9fsPath *olddir, const char *old_name, | |
156 | V9fsPath *newdir, const char *new_name); | |
157 | int (*unlinkat)(FsContext *ctx, V9fsPath *dir, const char *name, int flags); | |
99519f0a | 158 | }; |
fc22118d | 159 | |
74db920c | 160 | #endif |