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.
19 #include "qemu-fsdev-throttle.h"
26 # include <sys/param.h>
27 # include <sys/mount.h>
30 #define SM_LOCAL_MODE_BITS 0600
31 #define SM_LOCAL_DIR_MODE_BITS 0700
33 typedef struct FsCred {
40 typedef struct FsContext FsContext;
41 typedef struct V9fsPath V9fsPath;
43 typedef struct ExtendedOps {
44 int (*get_st_gen)(FsContext *, V9fsPath *, mode_t, uint64_t *);
48 #define V9FS_IMMEDIATE_WRITEOUT 0x00000001
49 #define V9FS_PATHNAME_FSCONTEXT 0x00000002
51 * uid/gid set on fileserver files
53 #define V9FS_SM_PASSTHROUGH 0x00000004
55 * uid/gid part of xattr
57 #define V9FS_SM_MAPPED 0x00000008
59 * Server will try to set uid/gid.
60 * On failure ignore the error.
62 #define V9FS_SM_NONE 0x00000010
64 * uid/gid part of .virtfs_meatadata namespace
66 #define V9FS_SM_MAPPED_FILE 0x00000020
67 #define V9FS_RDONLY 0x00000040
68 #define V9FS_PROXY_SOCK_FD 0x00000080
69 #define V9FS_PROXY_SOCK_NAME 0x00000100
71 * multidevs option (either one of the two applies exclusively)
73 #define V9FS_REMAP_INODES 0x00000200
74 #define V9FS_FORBID_MULTIDEVS 0x00000400
76 * Disables certain performance warnings from being logged on host side.
78 #define V9FS_NO_PERF_WARN 0x00000800
80 #define V9FS_SEC_MASK 0x0000003C
83 typedef struct FileOperations FileOperations;
84 typedef struct XattrOperations XattrOperations;
87 * Structure to store the various fsdev's passed through command line.
89 typedef struct FsDriverEntry {
103 XattrOperations **xops;
106 /* fs driver specific data */
116 P9ARRAY_DECLARE_TYPE(V9fsPath);
118 typedef union V9fsFidOpenState V9fsFidOpenState;
120 void cred_init(FsCred *);
122 struct FileOperations {
123 int (*parse_opts)(QemuOpts *, FsDriverEntry *, Error **errp);
124 int (*init)(FsContext *, Error **errp);
125 void (*cleanup)(FsContext *);
126 int (*lstat)(FsContext *, V9fsPath *, struct stat *);
127 ssize_t (*readlink)(FsContext *, V9fsPath *, char *, size_t);
128 int (*chmod)(FsContext *, V9fsPath *, FsCred *);
129 int (*chown)(FsContext *, V9fsPath *, FsCred *);
130 int (*mknod)(FsContext *, V9fsPath *, const char *, FsCred *);
131 int (*utimensat)(FsContext *, V9fsPath *, const struct timespec *);
132 int (*remove)(FsContext *, const char *);
133 int (*symlink)(FsContext *, const char *, V9fsPath *,
134 const char *, FsCred *);
135 int (*link)(FsContext *, V9fsPath *, V9fsPath *, const char *);
136 int (*setuid)(FsContext *, uid_t);
137 int (*close)(FsContext *, V9fsFidOpenState *);
138 int (*closedir)(FsContext *, V9fsFidOpenState *);
139 int (*opendir)(FsContext *, V9fsPath *, V9fsFidOpenState *);
140 int (*open)(FsContext *, V9fsPath *, int, V9fsFidOpenState *);
141 int (*open2)(FsContext *, V9fsPath *, const char *,
142 int, FsCred *, V9fsFidOpenState *);
143 void (*rewinddir)(FsContext *, V9fsFidOpenState *);
144 off_t (*telldir)(FsContext *, V9fsFidOpenState *);
145 struct dirent * (*readdir)(FsContext *, V9fsFidOpenState *);
146 void (*seekdir)(FsContext *, V9fsFidOpenState *, off_t);
147 ssize_t (*preadv)(FsContext *, V9fsFidOpenState *,
148 const struct iovec *, int, off_t);
149 ssize_t (*pwritev)(FsContext *, V9fsFidOpenState *,
150 const struct iovec *, int, off_t);
151 int (*mkdir)(FsContext *, V9fsPath *, const char *, FsCred *);
152 int (*fstat)(FsContext *, int, V9fsFidOpenState *, struct stat *);
153 int (*rename)(FsContext *, const char *, const char *);
154 int (*truncate)(FsContext *, V9fsPath *, off_t);
155 int (*fsync)(FsContext *, int, V9fsFidOpenState *, int);
156 int (*statfs)(FsContext *s, V9fsPath *path, struct statfs *stbuf);
157 ssize_t (*lgetxattr)(FsContext *, V9fsPath *,
158 const char *, void *, size_t);
159 ssize_t (*llistxattr)(FsContext *, V9fsPath *, void *, size_t);
160 int (*lsetxattr)(FsContext *, V9fsPath *,
161 const char *, void *, size_t, int);
162 int (*lremovexattr)(FsContext *, V9fsPath *, const char *);
163 int (*name_to_path)(FsContext *, V9fsPath *, const char *, V9fsPath *);
164 int (*renameat)(FsContext *ctx, V9fsPath *olddir, const char *old_name,
165 V9fsPath *newdir, const char *new_name);
166 int (*unlinkat)(FsContext *ctx, V9fsPath *dir, const char *name, int flags);