X-Git-Url: https://repo.jachan.dev/qemu.git/blobdiff_plain/353ac78d495ef976242abd868f68d78420861c2c..ca3d87d4c84032f19478010b5604cac88b045c25:/fsdev/file-op-9p.h diff --git a/fsdev/file-op-9p.h b/fsdev/file-op-9p.h index 126e60e276..6db9feac8f 100644 --- a/fsdev/file-op-9p.h +++ b/fsdev/file-op-9p.h @@ -1,5 +1,5 @@ /* - * Virtio 9p + * 9p * * Copyright IBM, Corp. 2010 * @@ -10,35 +10,17 @@ * the COPYING file in the top-level directory. * */ -#ifndef _FILEOP_H -#define _FILEOP_H -#include + +#ifndef FILE_OP_9P_H +#define FILE_OP_9P_H + #include -#include #include -#include -#include #include + #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; @@ -48,60 +30,118 @@ typedef struct FsCred } 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 { - char *fs_root; - SecModel fs_sm; 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 *); -typedef struct FileOperations +struct FileOperations { - int (*lstat)(FsContext *, const char *, struct stat *); - ssize_t (*readlink)(FsContext *, const char *, char *, size_t); - int (*chmod)(FsContext *, const char *, FsCred *); - int (*chown)(FsContext *, const char *, FsCred *); - int (*mknod)(FsContext *, const char *, FsCred *); - int (*utimensat)(FsContext *, const char *, const struct timespec *); + 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 *, const char *, FsCred *); - int (*link)(FsContext *, const char *, 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 *, const char *); - int (*open)(FsContext *, const char *, int); - int (*open2)(FsContext *, const char *, int, FsCred *); - void (*rewinddir)(FsContext *, DIR *); - off_t (*telldir)(FsContext *, DIR *); - struct dirent *(*readdir)(FsContext *, DIR *); - 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 *, const char *, FsCred *); - int (*fstat)(FsContext *, int, struct stat *); + 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 *, const char *, off_t); - int (*fsync)(FsContext *, int, int); - int (*statfs)(FsContext *s, const char *path, struct statfs *stbuf); - ssize_t (*lgetxattr)(FsContext *, 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 *, const char *, void *, size_t); - int (*lsetxattr)(FsContext *, const char *, + ssize_t (*llistxattr)(FsContext *, V9fsPath *, void *, size_t); + int (*lsetxattr)(FsContext *, V9fsPath *, const char *, void *, size_t, int); - int (*lremovexattr)(FsContext *, const char *, const char *); + 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; +}; -static inline const char *rpath(FsContext *ctx, const char *path) -{ - /* FIXME: so wrong... */ - static char buffer[4096]; - snprintf(buffer, sizeof(buffer), "%s/%s", ctx->fs_root, path); - return buffer; -} #endif