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Diffstat (limited to 'qemu/fsdev/file-op-9p.h')
| -rw-r--r-- | qemu/fsdev/file-op-9p.h | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/qemu/fsdev/file-op-9p.h b/qemu/fsdev/file-op-9p.h new file mode 100644 index 000000000..956fda091 --- /dev/null +++ b/qemu/fsdev/file-op-9p.h @@ -0,0 +1,150 @@ +/* + * 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 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 *); + 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 *); + int (*readdir_r)(FsContext *, V9fsFidOpenState *, + struct dirent *, struct dirent **); + 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 |