4 * Copyright IBM, Corp. 2010
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
20 #include "qemu-fsdev-throttle.h"
22 #define SM_LOCAL_MODE_BITS 0600
23 #define SM_LOCAL_DIR_MODE_BITS 0700
25 typedef struct FsCred {
32 typedef struct FsContext FsContext;
33 typedef struct V9fsPath V9fsPath;
35 typedef struct ExtendedOps {
36 int (*get_st_gen)(FsContext *, V9fsPath *, mode_t, uint64_t *);
40 #define V9FS_IMMEDIATE_WRITEOUT 0x00000001
41 #define V9FS_PATHNAME_FSCONTEXT 0x00000002
43 * uid/gid set on fileserver files
45 #define V9FS_SM_PASSTHROUGH 0x00000004
47 * uid/gid part of xattr
49 #define V9FS_SM_MAPPED 0x00000008
51 * Server will try to set uid/gid.
52 * On failure ignore the error.
54 #define V9FS_SM_NONE 0x00000010
56 * uid/gid part of .virtfs_meatadata namespace
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
63 #define V9FS_SEC_MASK 0x0000003C
66 typedef struct FileOperations FileOperations;
67 typedef struct XattrOperations XattrOperations;
70 * Structure to store the various fsdev's passed through command line.
72 typedef struct FsDriverEntry {
86 XattrOperations **xops;
89 /* fs driver specific data */
100 typedef union V9fsFidOpenState V9fsFidOpenState;
102 void cred_init(FsCred *);
104 struct FileOperations
106 int (*parse_opts)(QemuOpts *, FsDriverEntry *, Error **errp);
107 int (*init)(FsContext *, Error **errp);
108 void (*cleanup)(FsContext *);
109 int (*lstat)(FsContext *, V9fsPath *, struct stat *);
110 ssize_t (*readlink)(FsContext *, V9fsPath *, char *, size_t);
111 int (*chmod)(FsContext *, V9fsPath *, FsCred *);
112 int (*chown)(FsContext *, V9fsPath *, FsCred *);
113 int (*mknod)(FsContext *, V9fsPath *, const char *, FsCred *);
114 int (*utimensat)(FsContext *, V9fsPath *, const struct timespec *);
115 int (*remove)(FsContext *, const char *);
116 int (*symlink)(FsContext *, const char *, V9fsPath *,
117 const char *, FsCred *);
118 int (*link)(FsContext *, V9fsPath *, V9fsPath *, const char *);
119 int (*setuid)(FsContext *, uid_t);
120 int (*close)(FsContext *, V9fsFidOpenState *);
121 int (*closedir)(FsContext *, V9fsFidOpenState *);
122 int (*opendir)(FsContext *, V9fsPath *, V9fsFidOpenState *);
123 int (*open)(FsContext *, V9fsPath *, int, V9fsFidOpenState *);
124 int (*open2)(FsContext *, V9fsPath *, const char *,
125 int, FsCred *, V9fsFidOpenState *);
126 void (*rewinddir)(FsContext *, V9fsFidOpenState *);
127 off_t (*telldir)(FsContext *, V9fsFidOpenState *);
128 struct dirent * (*readdir)(FsContext *, V9fsFidOpenState *);
129 void (*seekdir)(FsContext *, V9fsFidOpenState *, off_t);
130 ssize_t (*preadv)(FsContext *, V9fsFidOpenState *,
131 const struct iovec *, int, off_t);
132 ssize_t (*pwritev)(FsContext *, V9fsFidOpenState *,
133 const struct iovec *, int, off_t);
134 int (*mkdir)(FsContext *, V9fsPath *, const char *, FsCred *);
135 int (*fstat)(FsContext *, int, V9fsFidOpenState *, struct stat *);
136 int (*rename)(FsContext *, const char *, const char *);
137 int (*truncate)(FsContext *, V9fsPath *, off_t);
138 int (*fsync)(FsContext *, int, V9fsFidOpenState *, int);
139 int (*statfs)(FsContext *s, V9fsPath *path, struct statfs *stbuf);
140 ssize_t (*lgetxattr)(FsContext *, V9fsPath *,
141 const char *, void *, size_t);
142 ssize_t (*llistxattr)(FsContext *, V9fsPath *, void *, size_t);
143 int (*lsetxattr)(FsContext *, V9fsPath *,
144 const char *, void *, size_t, int);
145 int (*lremovexattr)(FsContext *, V9fsPath *, const char *);
146 int (*name_to_path)(FsContext *, V9fsPath *, const char *, V9fsPath *);
147 int (*renameat)(FsContext *ctx, V9fsPath *olddir, const char *old_name,
148 V9fsPath *newdir, const char *new_name);
149 int (*unlinkat)(FsContext *ctx, V9fsPath *dir, const char *name, int flags);