When getattr requests the STX_CHANGE_COOKIE, request the full gamut of
caps (similarly to how ctime is handled). When the change attribute
seems to be valid, return it in the change_cookie field and set the flag
in the reply mask. Also, unconditionally enable
STATX_ATTR_CHANGE_MONOTONIC.
Reviewed-by: Xiubo Li <xiubli@xxxxxxxxxx>
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
fs/ceph/inode.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 23d05ec87fcc..e22e631cb115 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -2417,10 +2417,10 @@ static int statx_to_caps(u32 want, umode_t mode)
{
int mask = 0;
- if (want & (STATX_MODE|STATX_UID|STATX_GID|STATX_CTIME|STATX_BTIME))
+ if (want & (STATX_MODE|STATX_UID|STATX_GID|STATX_CTIME|STATX_BTIME|STATX_CHANGE_COOKIE))
mask |= CEPH_CAP_AUTH_SHARED;
- if (want & (STATX_NLINK|STATX_CTIME)) {
+ if (want & (STATX_NLINK|STATX_CTIME|STATX_CHANGE_COOKIE)) {
/*
* The link count for directories depends on inode->i_subdirs,
* and that is only updated when Fs caps are held.
@@ -2431,11 +2431,10 @@ static int statx_to_caps(u32 want, umode_t mode)
mask |= CEPH_CAP_LINK_SHARED;
}
- if (want & (STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_SIZE|
- STATX_BLOCKS))
+ if (want & (STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_SIZE|STATX_BLOCKS|STATX_CHANGE_COOKIE))
mask |= CEPH_CAP_FILE_SHARED;
- if (want & (STATX_CTIME))
+ if (want & (STATX_CTIME|STATX_CHANGE_COOKIE))
mask |= CEPH_CAP_XATTR_SHARED;
return mask;
@@ -2478,6 +2477,11 @@ int ceph_getattr(struct user_namespace *mnt_userns, const struct path *path,
valid_mask |= STATX_BTIME;
}
+ if (request_mask & STATX_CHANGE_COOKIE) {
+ stat->change_cookie = inode_peek_iversion_raw(inode);
+ valid_mask |= STATX_CHANGE_COOKIE;
+ }
+
if (ceph_snap(inode) == CEPH_NOSNAP)
stat->dev = sb->s_dev;
else
@@ -2519,6 +2523,8 @@ int ceph_getattr(struct user_namespace *mnt_userns, const struct path *path,
stat->nlink = 1 + 1 + ci->i_subdirs;
}
+ stat->attributes_mask |= STATX_ATTR_CHANGE_MONOTONIC;
+ stat->attributes |= STATX_ATTR_CHANGE_MONOTONIC;
stat->result_mask = request_mask & valid_mask;
return err;
}
--
2.39.1
