e5e5558e92
This patch adds the read-only filesystem operations of FUSE.
This contains the following files:
o dir.c
- directory, symlink and file-inode operations
The following operations are added:
o lookup
o getattr
o readlink
o follow_link
o directory open
o readdir
o directory release
o permission
o dentry revalidate
o statfs
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
133 lines
2.4 KiB
C
133 lines
2.4 KiB
C
/*
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FUSE: Filesystem in Userspace
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Copyright (C) 2001-2005 Miklos Szeredi <miklos@szeredi.hu>
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This program can be distributed under the terms of the GNU GPL.
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See the file COPYING.
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*/
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/* This file defines the kernel interface of FUSE */
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#include <asm/types.h>
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/** Version number of this interface */
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#define FUSE_KERNEL_VERSION 6
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/** Minor version number of this interface */
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#define FUSE_KERNEL_MINOR_VERSION 1
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/** The node ID of the root inode */
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#define FUSE_ROOT_ID 1
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/** The major number of the fuse character device */
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#define FUSE_MAJOR 10
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/** The minor number of the fuse character device */
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#define FUSE_MINOR 229
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struct fuse_attr {
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__u64 ino;
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__u64 size;
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__u64 blocks;
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__u64 atime;
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__u64 mtime;
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__u64 ctime;
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__u32 atimensec;
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__u32 mtimensec;
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__u32 ctimensec;
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__u32 mode;
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__u32 nlink;
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__u32 uid;
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__u32 gid;
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__u32 rdev;
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};
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struct fuse_kstatfs {
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__u64 blocks;
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__u64 bfree;
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__u64 bavail;
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__u64 files;
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__u64 ffree;
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__u32 bsize;
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__u32 namelen;
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};
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enum fuse_opcode {
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FUSE_LOOKUP = 1,
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FUSE_FORGET = 2, /* no reply */
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FUSE_GETATTR = 3,
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FUSE_READLINK = 5,
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FUSE_GETDIR = 7,
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FUSE_STATFS = 17,
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FUSE_INIT = 26
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};
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/* Conservative buffer size for the client */
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#define FUSE_MAX_IN 8192
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#define FUSE_NAME_MAX 1024
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struct fuse_entry_out {
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__u64 nodeid; /* Inode ID */
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__u64 generation; /* Inode generation: nodeid:gen must
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be unique for the fs's lifetime */
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__u64 entry_valid; /* Cache timeout for the name */
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__u64 attr_valid; /* Cache timeout for the attributes */
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__u32 entry_valid_nsec;
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__u32 attr_valid_nsec;
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struct fuse_attr attr;
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};
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struct fuse_forget_in {
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__u64 version;
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};
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struct fuse_attr_out {
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__u64 attr_valid; /* Cache timeout for the attributes */
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__u32 attr_valid_nsec;
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__u32 dummy;
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struct fuse_attr attr;
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};
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struct fuse_getdir_out {
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__u32 fd;
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};
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struct fuse_statfs_out {
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struct fuse_kstatfs st;
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};
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struct fuse_init_in_out {
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__u32 major;
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__u32 minor;
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};
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struct fuse_in_header {
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__u32 len;
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__u32 opcode;
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__u64 unique;
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__u64 nodeid;
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__u32 uid;
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__u32 gid;
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__u32 pid;
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};
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struct fuse_out_header {
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__u32 len;
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__s32 error;
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__u64 unique;
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};
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struct fuse_dirent {
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__u64 ino;
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__u64 off;
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__u32 namelen;
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__u32 type;
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char name[0];
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};
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#define FUSE_NAME_OFFSET ((unsigned) ((struct fuse_dirent *) 0)->name)
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#define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1))
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#define FUSE_DIRENT_SIZE(d) \
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FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
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