diff options
| author | Jeff Layton <jlayton@kernel.org> | 2024-11-11 18:09:57 +0300 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2024-11-13 16:08:17 +0300 |
| commit | 44010543fc8bedad172aa5b6c43480e5d2124497 (patch) | |
| tree | 50f7bbb0ea4c9ab9e8cfb1778c478bf3597dbb98 /include/uapi/linux | |
| parent | ed9d95f691c29748f21bc019de9566b698fdfab7 (diff) | |
| download | linux-44010543fc8bedad172aa5b6c43480e5d2124497.tar.xz | |
fs: add the ability for statmount() to report the sb_source
/proc/self/mountinfo displays the source for the mount, but statmount()
doesn't yet have a way to return it. Add a new STATMOUNT_SB_SOURCE flag,
claim the 32-bit __spare1 field to hold the offset into the str[] array.
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/r/20241111-statmount-v4-3-2eaf35d07a80@kernel.org
Acked-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/mount.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/uapi/linux/mount.h b/include/uapi/linux/mount.h index 2e939dddf9cb..2b49e9131d77 100644 --- a/include/uapi/linux/mount.h +++ b/include/uapi/linux/mount.h @@ -174,7 +174,7 @@ struct statmount { __u32 mnt_point; /* [str] Mountpoint relative to current root */ __u64 mnt_ns_id; /* ID of the mount namespace */ __u32 fs_subtype; /* [str] Subtype of fs_type (if any) */ - __u32 __spare1[1]; + __u32 sb_source; /* [str] Source string of the mount */ __u64 __spare2[48]; char str[]; /* Variable size part containing strings */ }; @@ -210,6 +210,7 @@ struct mnt_id_req { #define STATMOUNT_MNT_NS_ID 0x00000040U /* Want/got mnt_ns_id */ #define STATMOUNT_MNT_OPTS 0x00000080U /* Want/got mnt_opts */ #define STATMOUNT_FS_SUBTYPE 0x00000100U /* Want/got fs_subtype */ +#define STATMOUNT_SB_SOURCE 0x00000200U /* Want/got sb_source */ /* * Special @mnt_id values that can be passed to listmount |