4 * Copyright IBM, Corp. 2010
7 * Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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
36 typedef struct extended_ops
{
37 int (*get_st_gen
)(struct FsContext
*, struct V9fsPath
*,
42 #define V9FS_IMMEDIATE_WRITEOUT 0x00000001
43 #define V9FS_PATHNAME_FSCONTEXT 0x00000002
45 * uid/gid set on fileserver files
47 #define V9FS_SM_PASSTHROUGH 0x00000004
49 * uid/gid part of xattr
51 #define V9FS_SM_MAPPED 0x00000008
53 * Server will try to set uid/gid.
54 * On failure ignore the error.
56 #define V9FS_SM_NONE 0x00000010
58 * uid/gid part of .virtfs_meatadata namespace
60 #define V9FS_SM_MAPPED_FILE 0x00000020
61 #define V9FS_RDONLY 0x00000040
62 #define V9FS_PROXY_SOCK_FD 0x00000080
63 #define V9FS_PROXY_SOCK_NAME 0x00000100
65 #define V9FS_SEC_MASK 0x0000003C
68 typedef struct FileOperations FileOperations
;
69 typedef struct XattrOperations XattrOperations
;
72 * Structure to store the various fsdev's passed through command line.
74 typedef struct FsDriverEntry
{
84 typedef struct FsContext
89 XattrOperations
**xops
;
90 struct extended_ops exops
;
92 /* fs driver specific data */
98 typedef struct V9fsPath
{
103 typedef union V9fsFidOpenState V9fsFidOpenState
;
105 void cred_init(FsCred
*);
107 struct FileOperations
109 int (*parse_opts
)(QemuOpts
*, struct FsDriverEntry
*);
110 int (*init
)(struct FsContext
*);
111 void (*cleanup
)(struct FsContext
*);
112 int (*lstat
)(FsContext
*, V9fsPath
*, struct stat
*);
113 ssize_t (*readlink
)(FsContext
*, V9fsPath
*, char *, size_t);
114 int (*chmod
)(FsContext
*, V9fsPath
*, FsCred
*);
115 int (*chown
)(FsContext
*, V9fsPath
*, FsCred
*);
116 int (*mknod
)(FsContext
*, V9fsPath
*, const char *, FsCred
*);
117 int (*utimensat
)(FsContext
*, V9fsPath
*, const struct timespec
*);
118 int (*remove
)(FsContext
*, const char *);
119 int (*symlink
)(FsContext
*, const char *, V9fsPath
*,
120 const char *, FsCred
*);
121 int (*link
)(FsContext
*, V9fsPath
*, V9fsPath
*, const char *);
122 int (*setuid
)(FsContext
*, uid_t
);
123 int (*close
)(FsContext
*, V9fsFidOpenState
*);
124 int (*closedir
)(FsContext
*, V9fsFidOpenState
*);
125 int (*opendir
)(FsContext
*, V9fsPath
*, V9fsFidOpenState
*);
126 int (*open
)(FsContext
*, V9fsPath
*, int, V9fsFidOpenState
*);
127 int (*open2
)(FsContext
*, V9fsPath
*, const char *,
128 int, FsCred
*, V9fsFidOpenState
*);
129 void (*rewinddir
)(FsContext
*, V9fsFidOpenState
*);
130 off_t (*telldir
)(FsContext
*, V9fsFidOpenState
*);
131 struct dirent
* (*readdir
)(FsContext
*, V9fsFidOpenState
*);
132 void (*seekdir
)(FsContext
*, V9fsFidOpenState
*, off_t
);
133 ssize_t (*preadv
)(FsContext
*, V9fsFidOpenState
*,
134 const struct iovec
*, int, off_t
);
135 ssize_t (*pwritev
)(FsContext
*, V9fsFidOpenState
*,
136 const struct iovec
*, int, off_t
);
137 int (*mkdir
)(FsContext
*, V9fsPath
*, const char *, FsCred
*);
138 int (*fstat
)(FsContext
*, int, V9fsFidOpenState
*, struct stat
*);
139 int (*rename
)(FsContext
*, const char *, const char *);
140 int (*truncate
)(FsContext
*, V9fsPath
*, off_t
);
141 int (*fsync
)(FsContext
*, int, V9fsFidOpenState
*, int);
142 int (*statfs
)(FsContext
*s
, V9fsPath
*path
, struct statfs
*stbuf
);
143 ssize_t (*lgetxattr
)(FsContext
*, V9fsPath
*,
144 const char *, void *, size_t);
145 ssize_t (*llistxattr
)(FsContext
*, V9fsPath
*, void *, size_t);
146 int (*lsetxattr
)(FsContext
*, V9fsPath
*,
147 const char *, void *, size_t, int);
148 int (*lremovexattr
)(FsContext
*, V9fsPath
*, const char *);
149 int (*name_to_path
)(FsContext
*, V9fsPath
*, const char *, V9fsPath
*);
150 int (*renameat
)(FsContext
*ctx
, V9fsPath
*olddir
, const char *old_name
,
151 V9fsPath
*newdir
, const char *new_name
);
152 int (*unlinkat
)(FsContext
*ctx
, V9fsPath
*dir
, const char *name
, int flags
);