/* * 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> #include "qemu-fsdev-throttle.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; typedef struct FsContext FsContext; typedef struct V9fsPath V9fsPath; typedef struct ExtendedOps { int (*get_st_gen)(FsContext *, V9fsPath *, mode_t, uint64_t *); } ExtendedOps; /* 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 /* * multidevs option (either one of the two applies exclusively) */ #define V9FS_REMAP_INODES 0x00000200 #define V9FS_FORBID_MULTIDEVS 0x00000400 #define V9FS_SEC_MASK 0x0000003C typedef struct FileOperations FileOperations; typedef struct XattrOperations XattrOperations; /* * Structure to store the various fsdev's passed through command line. */ typedef struct FsDriverEntry { char *fsdev_id; char *path; int export_flags; FileOperations *ops; FsThrottle fst; mode_t fmode; mode_t dmode; } FsDriverEntry; struct FsContext { uid_t uid; char *fs_root; int export_flags; XattrOperations **xops; ExtendedOps exops; FsThrottle *fst; /* fs driver specific data */ void *private; mode_t fmode; mode_t dmode; }; struct V9fsPath { uint16_t size; char *data; }; typedef union V9fsFidOpenState V9fsFidOpenState; void cred_init(FsCred *); struct FileOperations { int (*parse_opts)(QemuOpts *, FsDriverEntry *, Error **errp); int (*init)(FsContext *, Error **errp); void (*cleanup)(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); }; #endif