149 lines
4.6 KiB
C
149 lines
4.6 KiB
C
/*
|
|
* 9p
|
|
*
|
|
* Copyright IBM, Corp. 2010
|
|
*
|
|
* Authors:
|
|
* Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2. See
|
|
* the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#ifndef FILE_OP_9P_H
|
|
#define FILE_OP_9P_H
|
|
|
|
#include <dirent.h>
|
|
#include <utime.h>
|
|
#include <sys/vfs.h>
|
|
|
|
#define SM_LOCAL_MODE_BITS 0600
|
|
#define SM_LOCAL_DIR_MODE_BITS 0700
|
|
|
|
typedef struct FsCred
|
|
{
|
|
uid_t fc_uid;
|
|
gid_t fc_gid;
|
|
mode_t fc_mode;
|
|
dev_t fc_rdev;
|
|
} FsCred;
|
|
|
|
struct xattr_operations;
|
|
struct FsContext;
|
|
struct V9fsPath;
|
|
|
|
typedef struct extended_ops {
|
|
int (*get_st_gen)(struct FsContext *, struct V9fsPath *,
|
|
mode_t, uint64_t *);
|
|
} extended_ops;
|
|
|
|
/* export flags */
|
|
#define V9FS_IMMEDIATE_WRITEOUT 0x00000001
|
|
#define V9FS_PATHNAME_FSCONTEXT 0x00000002
|
|
/*
|
|
* uid/gid set on fileserver files
|
|
*/
|
|
#define V9FS_SM_PASSTHROUGH 0x00000004
|
|
/*
|
|
* uid/gid part of xattr
|
|
*/
|
|
#define V9FS_SM_MAPPED 0x00000008
|
|
/*
|
|
* Server will try to set uid/gid.
|
|
* On failure ignore the error.
|
|
*/
|
|
#define V9FS_SM_NONE 0x00000010
|
|
/*
|
|
* uid/gid part of .virtfs_meatadata namespace
|
|
*/
|
|
#define V9FS_SM_MAPPED_FILE 0x00000020
|
|
#define V9FS_RDONLY 0x00000040
|
|
#define V9FS_PROXY_SOCK_FD 0x00000080
|
|
#define V9FS_PROXY_SOCK_NAME 0x00000100
|
|
|
|
#define V9FS_SEC_MASK 0x0000003C
|
|
|
|
|
|
typedef struct FileOperations FileOperations;
|
|
/*
|
|
* Structure to store the various fsdev's passed through command line.
|
|
*/
|
|
typedef struct FsDriverEntry {
|
|
char *fsdev_id;
|
|
char *path;
|
|
int export_flags;
|
|
FileOperations *ops;
|
|
} FsDriverEntry;
|
|
|
|
typedef struct FsContext
|
|
{
|
|
uid_t uid;
|
|
char *fs_root;
|
|
int export_flags;
|
|
struct xattr_operations **xops;
|
|
struct extended_ops exops;
|
|
/* fs driver specific data */
|
|
void *private;
|
|
} FsContext;
|
|
|
|
typedef struct V9fsPath {
|
|
uint16_t size;
|
|
char *data;
|
|
} V9fsPath;
|
|
|
|
typedef union V9fsFidOpenState V9fsFidOpenState;
|
|
|
|
void cred_init(FsCred *);
|
|
|
|
struct FileOperations
|
|
{
|
|
int (*parse_opts)(QemuOpts *, struct FsDriverEntry *);
|
|
int (*init)(struct FsContext *);
|
|
void (*cleanup)(struct FsContext *);
|
|
int (*lstat)(FsContext *, V9fsPath *, struct stat *);
|
|
ssize_t (*readlink)(FsContext *, V9fsPath *, char *, size_t);
|
|
int (*chmod)(FsContext *, V9fsPath *, FsCred *);
|
|
int (*chown)(FsContext *, V9fsPath *, FsCred *);
|
|
int (*mknod)(FsContext *, V9fsPath *, const char *, FsCred *);
|
|
int (*utimensat)(FsContext *, V9fsPath *, const struct timespec *);
|
|
int (*remove)(FsContext *, const char *);
|
|
int (*symlink)(FsContext *, const char *, V9fsPath *,
|
|
const char *, FsCred *);
|
|
int (*link)(FsContext *, V9fsPath *, V9fsPath *, const char *);
|
|
int (*setuid)(FsContext *, uid_t);
|
|
int (*close)(FsContext *, V9fsFidOpenState *);
|
|
int (*closedir)(FsContext *, V9fsFidOpenState *);
|
|
int (*opendir)(FsContext *, V9fsPath *, V9fsFidOpenState *);
|
|
int (*open)(FsContext *, V9fsPath *, int, V9fsFidOpenState *);
|
|
int (*open2)(FsContext *, V9fsPath *, const char *,
|
|
int, FsCred *, V9fsFidOpenState *);
|
|
void (*rewinddir)(FsContext *, V9fsFidOpenState *);
|
|
off_t (*telldir)(FsContext *, V9fsFidOpenState *);
|
|
struct dirent * (*readdir)(FsContext *, V9fsFidOpenState *);
|
|
void (*seekdir)(FsContext *, V9fsFidOpenState *, off_t);
|
|
ssize_t (*preadv)(FsContext *, V9fsFidOpenState *,
|
|
const struct iovec *, int, off_t);
|
|
ssize_t (*pwritev)(FsContext *, V9fsFidOpenState *,
|
|
const struct iovec *, int, off_t);
|
|
int (*mkdir)(FsContext *, V9fsPath *, const char *, FsCred *);
|
|
int (*fstat)(FsContext *, int, V9fsFidOpenState *, struct stat *);
|
|
int (*rename)(FsContext *, const char *, const char *);
|
|
int (*truncate)(FsContext *, V9fsPath *, off_t);
|
|
int (*fsync)(FsContext *, int, V9fsFidOpenState *, int);
|
|
int (*statfs)(FsContext *s, V9fsPath *path, struct statfs *stbuf);
|
|
ssize_t (*lgetxattr)(FsContext *, V9fsPath *,
|
|
const char *, void *, size_t);
|
|
ssize_t (*llistxattr)(FsContext *, V9fsPath *, void *, size_t);
|
|
int (*lsetxattr)(FsContext *, V9fsPath *,
|
|
const char *, void *, size_t, int);
|
|
int (*lremovexattr)(FsContext *, V9fsPath *, const char *);
|
|
int (*name_to_path)(FsContext *, V9fsPath *, const char *, V9fsPath *);
|
|
int (*renameat)(FsContext *ctx, V9fsPath *olddir, const char *old_name,
|
|
V9fsPath *newdir, const char *new_name);
|
|
int (*unlinkat)(FsContext *ctx, V9fsPath *dir, const char *name, int flags);
|
|
void *opaque;
|
|
};
|
|
|
|
#endif
|