proxmox-mirrors/mirror_ubuntu-kernels
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_ubuntu-kernels.git synced 2026-01-06 22:46:35 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

exportfs: define FILEID_INO64_GEN* file handle types

Browse Source 
Similar to the common FILEID_INO32* file handle types, define common
FILEID_INO64* file handle types.

The type values of FILEID_INO64_GEN and FILEID_INO64_GEN_PARENT are the
values returned by fuse and xfs for 64bit ino encoded file handle types.

Note that these type value are filesystem specific and they do not define
a universal file handle format, for example:
fuse encodes FILEID_INO64_GEN as [ino-hi32,ino-lo32,gen] and xfs encodes
FILEID_INO64_GEN as [hostr-order-ino64,gen] (a.k.a xfs_fid64).

The FILEID_INO64_GEN fhandle type is going to be used for file ids for
fanotify from filesystems that do not support NFS export.

Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231023180801.2953446-4-amir73il@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Amir Goldstein 2023-10-23 21:08:00 +03:00 committed by Christian Brauner
parent e21fc2038c
commit 41d1ddd271
No known key found for this signature in database
GPG Key ID: 91C61BC06578DCA2
2 changed files with 15 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
fs/fuse/inode.c
View File

@ -1002,7 +1002,7 @@ static int fuse_encode_fh(struct inode *inode, u32 *fh, int *max_len,
}
*max_len = len;
return parent ? 0x82 : 0x81;
return parent ? FILEID_INO64_GEN_PARENT : FILEID_INO64_GEN;
}
static struct dentry *fuse_fh_to_dentry(struct super_block *sb,
@ -1010,7 +1010,8 @@ static struct dentry *fuse_fh_to_dentry(struct super_block *sb,
{
struct fuse_inode_handle handle;
if ((fh_type != 0x81 && fh_type != 0x82) || fh_len < 3)
if ((fh_type != FILEID_INO64_GEN &&
fh_type != FILEID_INO64_GEN_PARENT) || fh_len < 3)
return NULL;
handle.nodeid = (u64) fid->raw[0] << 32;
@ -1024,7 +1025,7 @@ static struct dentry *fuse_fh_to_parent(struct super_block *sb,
{
struct fuse_inode_handle parent;
if (fh_type != 0x82 || fh_len < 6)
if (fh_type != FILEID_INO64_GEN_PARENT || fh_len < 6)
return NULL;
parent.nodeid = (u64) fid->raw[3] << 32;

11
include/linux/exportfs.h
View File

@ -98,6 +98,17 @@ enum fid_type {
*/
FILEID_FAT_WITH_PARENT = 0x72,
/*
* 64 bit inode number, 32 bit generation number.
*/
FILEID_INO64_GEN = 0x81,
/*
* 64 bit inode number, 32 bit generation number,
* 64 bit parent inode number, 32 bit parent generation.
*/
FILEID_INO64_GEN_PARENT = 0x82,
/*
* 128 bit child FID (struct lu_fid)
* 128 bit parent FID (struct lu_fid)