+/*
+ * Copyright (C) 2004 Jeff Dike (jdike@addtoit.com)
+ * Licensed under the GPL
+ */
+
#ifndef __UM_FS_HOSTFS
#define __UM_FS_HOSTFS
+#include "linux/fs.h"
+#include "filehandle.h"
#include "os.h"
-/* These are exactly the same definitions as in fs.h, but the names are
+/* These are exactly the same definitions as in fs.h, but the names are
* changed so that this file can be included in both kernel and user files.
*/
-#define HOSTFS_ATTR_MODE 1
-#define HOSTFS_ATTR_UID 2
-#define HOSTFS_ATTR_GID 4
-#define HOSTFS_ATTR_SIZE 8
-#define HOSTFS_ATTR_ATIME 16
-#define HOSTFS_ATTR_MTIME 32
-#define HOSTFS_ATTR_CTIME 64
-#define HOSTFS_ATTR_ATIME_SET 128
-#define HOSTFS_ATTR_MTIME_SET 256
-#define HOSTFS_ATTR_FORCE 512 /* Not a change, but a change it */
-#define HOSTFS_ATTR_ATTR_FLAG 1024
-
-struct hostfs_iattr {
+#define EXTERNFS_ATTR_MODE 1
+#define EXTERNFS_ATTR_UID 2
+#define EXTERNFS_ATTR_GID 4
+#define EXTERNFS_ATTR_SIZE 8
+#define EXTERNFS_ATTR_ATIME 16
+#define EXTERNFS_ATTR_MTIME 32
+#define EXTERNFS_ATTR_CTIME 64
+#define EXTERNFS_ATTR_ATIME_SET 128
+#define EXTERNFS_ATTR_MTIME_SET 256
+#define EXTERNFS_ATTR_FORCE 512 /* Not a change, but a change it */
+#define EXTERNFS_ATTR_ATTR_FLAG 1024
+
+struct externfs_iattr {
unsigned int ia_valid;
mode_t ia_mode;
uid_t ia_uid;
gid_t ia_gid;
loff_t ia_size;
- struct timespec ia_atime;
- struct timespec ia_mtime;
- struct timespec ia_ctime;
+ time_t ia_atime;
+ time_t ia_mtime;
+ time_t ia_ctime;
unsigned int ia_attr_flags;
};
-extern int stat_file(const char *path, unsigned long long *inode_out,
- int *mode_out, int *nlink_out, int *uid_out, int *gid_out,
- unsigned long long *size_out, struct timespec *atime_out,
- struct timespec *mtime_out, struct timespec *ctime_out,
- int *blksize_out, unsigned long long *blocks_out);
-extern int access_file(char *path, int r, int w, int x);
-extern int open_file(char *path, int r, int w, int append);
-extern int file_type(const char *path, int *maj, int *min);
-extern void *open_dir(char *path, int *err_out);
-extern char *read_dir(void *stream, unsigned long long *pos,
- unsigned long long *ino_out, int *len_out);
-extern void close_file(void *stream);
-extern void close_dir(void *stream);
-extern int read_file(int fd, unsigned long long *offset, char *buf, int len);
-extern int write_file(int fd, unsigned long long *offset, const char *buf,
- int len);
-extern int lseek_file(int fd, long long offset, int whence);
-extern int file_create(char *name, int ur, int uw, int ux, int gr,
- int gw, int gx, int or, int ow, int ox);
-extern int set_attr(const char *file, struct hostfs_iattr *attrs);
-extern int make_symlink(const char *from, const char *to);
-extern int unlink_file(const char *file);
-extern int do_mkdir(const char *file, int mode);
-extern int do_rmdir(const char *file);
-extern int do_mknod(const char *file, int mode, int dev);
-extern int link_file(const char *from, const char *to);
-extern int do_readlink(char *file, char *buf, int size);
-extern int rename_file(char *from, char *to);
-extern int do_statfs(char *root, long *bsize_out, long long *blocks_out,
- long long *bfree_out, long long *bavail_out,
- long long *files_out, long long *ffree_out,
- void *fsid_out, int fsid_size, long *namelen_out,
- long *spare_out);
+struct externfs_data {
+ struct externfs_file_ops *file_ops;
+ struct externfs_mount_ops *mount_ops;
+};
+
+struct externfs_inode {
+ struct inode vfs_inode;
+ struct externfs_file_ops *ops;
+};
+
+struct externfs_mount_ops {
+ struct externfs_data *(*mount)(char *mount_arg);
+ struct externfs_inode *(*init_file)(struct externfs_data *ed);
+};
+
+struct externfs_file_ops {
+ int (*stat_file)(const char *path, struct externfs_data *ed,
+ dev_t *dev_out, unsigned long long *inode_out,
+ int *mode_out, int *nlink_out, int *uid_out,
+ int *gid_out, unsigned long long *size_out,
+ unsigned long *atime_out, unsigned long *mtime_out,
+ unsigned long *ctime_out, int *blksize_out,
+ unsigned long long *blocks_out);
+ int (*file_type)(const char *path, int *rdev,
+ struct externfs_data *ed);
+ int (*access_file)(char *path, int r, int w, int x, int uid, int gid,
+ struct externfs_data *ed);
+ int (*open_file)(struct externfs_inode *ext, char *file,
+ int uid, int gid, struct inode *inode,
+ struct externfs_data *ed);
+ void (*close_file)(struct externfs_inode *ext,
+ unsigned long long size);
+ void *(*open_dir)(char *path, int uid, int gid,
+ struct externfs_data *ed);
+ char *(*read_dir)(void *stream, unsigned long long *pos,
+ unsigned long long *ino_out, int *len_out,
+ struct externfs_data *ed);
+ int (*read_file)(struct externfs_inode *ext,
+ unsigned long long offset, char *buf, int len,
+ int ignore_start, int ignore_end,
+ void (*completion)(char *, int, void *), void *arg,
+ struct externfs_data *ed);
+ int (*write_file)(struct externfs_inode *ext,
+ unsigned long long offset, const char *buf,
+ int start, int len,
+ void (*completion)(char *, int, void *), void *arg,
+ struct externfs_data *ed);
+ int (*map_file_page)(struct externfs_inode *ext,
+ unsigned long long offset, char *buf, int w,
+ struct externfs_data *ed);
+ void (*close_dir)(void *stream, struct externfs_data *ed);
+ void (*invisible)(struct externfs_inode *ext);
+ int (*create_file)(struct externfs_inode *ext, char *path,
+ int mode, int uid, int gid, struct inode *inode,
+ struct externfs_data *ed);
+ int (*set_attr)(const char *path, struct externfs_iattr *attrs,
+ struct externfs_data *ed);
+ int (*make_symlink)(const char *from, const char *to, int uid, int gid,
+ struct externfs_data *ed);
+ int (*unlink_file)(const char *path, struct externfs_data *ed);
+ int (*make_dir)(const char *path, int mode, int uid, int gid,
+ struct externfs_data *ed);
+ int (*remove_dir)(const char *path, int uid, int gid,
+ struct externfs_data *ed);
+ int (*make_node)(const char *path, int mode, int uid, int gid,
+ int type, int maj, int min, struct externfs_data *ed);
+ int (*link_file)(const char *to, const char *from, int uid, int gid,
+ struct externfs_data *ed);
+ int (*read_link)(char *path, int uid, int gid, char *buf, int size,
+ struct externfs_data *ed);
+ int (*rename_file)(char *from, char *to, struct externfs_data *ed);
+ int (*statfs)(long *bsize_out, long long *blocks_out,
+ long long *bfree_out, long long *bavail_out,
+ long long *files_out, long long *ffree_out,
+ void *fsid_out, int fsid_size, long *namelen_out,
+ long *spare_out, struct externfs_data *ed);
+ int (*truncate_file)(struct externfs_inode *ext, __u64 size,
+ struct externfs_data *ed);
+};
+
+#define HOSTFS_BUFSIZE 64
+
+extern int register_externfs(char *name, struct externfs_mount_ops *mount_ops);
+extern void unregister_externfs(char *name);
+extern void init_externfs(struct externfs_data *ed,
+ struct externfs_file_ops *ops);
+struct externfs_data *inode_externfs_info(struct inode *inode);
+
+extern char *generic_root_filename(char *mount_arg);
+extern void host_close_file(void *stream);
+extern int host_read_file(int fd, unsigned long long offset, char *buf,
+ int len);
+extern int host_open_file(const char *path[], int r, int w,
+ struct file_handle *fh);
+extern void *host_open_dir(const char *path[]);
+extern char *host_read_dir(void *stream, unsigned long long *pos,
+ unsigned long long *ino_out, int *len_out);
+extern int host_file_type(const char *path[], int *rdev);
+extern char *host_root_filename(char *mount_arg);
+extern char *get_path(const char *path[], char *buf, int size);
+extern void free_path(const char *buf, char *tmp);
+extern int host_create_file(const char *path[], int mode,
+ struct file_handle *fh);
+extern int host_set_attr(const char *path[], struct externfs_iattr *attrs);
+extern int host_make_symlink(const char *from[], const char *to);
+extern int host_unlink_file(const char *path[]);
+extern int host_make_dir(const char *path[], int mode);
+extern int host_remove_dir(const char *path[]);
+extern int host_link_file(const char *to[], const char *from[]);
+extern int host_read_link(const char *path[], char *buf, int size);
+extern int host_rename_file(const char *from[], const char *to[]);
+extern int host_stat_fs(const char *path[], long *bsize_out,
+ long long *blocks_out, long long *bfree_out,
+ long long *bavail_out, long long *files_out,
+ long long *ffree_out, void *fsid_out, int fsid_size,
+ long *namelen_out, long *spare_out);
+extern int host_stat_file(const char *path[], int *dev_out,
+ unsigned long long *inode_out, int *mode_out,
+ int *nlink_out, int *uid_out, int *gid_out,
+ unsigned long long *size_out,
+ unsigned long *atime_out, unsigned long *mtime_out,
+ unsigned long *ctime_out, int *blksize_out,
+ unsigned long long *blocks_out);
+
+extern char *generic_host_read_dir(void *stream, unsigned long long *pos,
+ unsigned long long *ino_out, int *len_out,
+ void *mount);
+extern int generic_host_read_file(int fd, unsigned long long offset, char *buf,
+ int len, void *mount);
+extern void generic_host_close_file(void *stream, unsigned long long size,
+ void *mount);
+extern int generic_host_truncate_file(struct file_handle *fh, __u64 size,
+ void *m);
+
+extern char *inode_name_prefix(struct inode *inode, char *prefix);
#endif
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