| /* |
| * Virtio 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 _FILEOP_H |
| #define _FILEOP_H |
| #include <sys/types.h> |
| #include <dirent.h> |
| #include <sys/time.h> |
| #include <utime.h> |
| #include <sys/stat.h> |
| #include <sys/uio.h> |
| #include <sys/vfs.h> |
| |
| #define SM_LOCAL_MODE_BITS 0600 |
| #define SM_LOCAL_DIR_MODE_BITS 0700 |
| |
| typedef enum |
| { |
| /* |
| * Server will try to set uid/gid. |
| * On failure ignore the error. |
| */ |
| SM_NONE = 0, |
| /* |
| * uid/gid set on fileserver files |
| */ |
| SM_PASSTHROUGH = 1, |
| /* |
| * uid/gid part of xattr |
| */ |
| SM_MAPPED, |
| } SecModel; |
| |
| typedef struct FsCred |
| { |
| uid_t fc_uid; |
| gid_t fc_gid; |
| mode_t fc_mode; |
| dev_t fc_rdev; |
| } FsCred; |
| |
| struct xattr_operations; |
| |
| typedef struct FsContext |
| { |
| char *fs_root; |
| SecModel fs_sm; |
| uid_t uid; |
| struct xattr_operations **xops; |
| } FsContext; |
| |
| typedef struct V9fsPath { |
| int16_t size; |
| char *data; |
| } V9fsPath; |
| |
| void cred_init(FsCred *); |
| |
| typedef struct FileOperations |
| { |
| int (*init)(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 *, int); |
| int (*closedir)(FsContext *, DIR *); |
| DIR *(*opendir)(FsContext *, V9fsPath *); |
| int (*open)(FsContext *, V9fsPath *, int); |
| int (*open2)(FsContext *, V9fsPath *, const char *, int, FsCred *); |
| void (*rewinddir)(FsContext *, DIR *); |
| off_t (*telldir)(FsContext *, DIR *); |
| int (*readdir_r)(FsContext *, DIR *, struct dirent *, struct dirent **); |
| void (*seekdir)(FsContext *, DIR *, off_t); |
| ssize_t (*preadv)(FsContext *, int, const struct iovec *, int, off_t); |
| ssize_t (*pwritev)(FsContext *, int, const struct iovec *, int, off_t); |
| int (*mkdir)(FsContext *, V9fsPath *, const char *, FsCred *); |
| int (*fstat)(FsContext *, int, struct stat *); |
| int (*rename)(FsContext *, const char *, const char *); |
| int (*truncate)(FsContext *, V9fsPath *, off_t); |
| int (*fsync)(FsContext *, int, 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; |
| } FileOperations; |
| |
| #endif |