diff mbox series

[RFC,4/4] ceph: fill in the change attribute in statx requests

Message ID 20220805183543.274352-5-jlayton@kernel.org
State Superseded
Headers show
Series vfs: allow querying i_version via statx | expand

Commit Message

Jeff Layton Aug. 5, 2022, 6:35 p.m. UTC
When statx requests the change attribute, request the full gamut of caps
(similarly to how ctime is handled). When the change attribute seems to
be valid, return it in the chgattr field.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/ceph/inode.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

Comments

Xiubo Li Aug. 8, 2022, 11:56 a.m. UTC | #1
On 8/6/22 2:35 AM, Jeff Layton wrote:
> When statx requests the change attribute, request the full gamut of caps
> (similarly to how ctime is handled). When the change attribute seems to
> be valid, return it in the chgattr field.
>
> Signed-off-by: Jeff Layton <jlayton@kernel.org>
> ---
>   fs/ceph/inode.c | 14 +++++++++-----
>   1 file changed, 9 insertions(+), 5 deletions(-)
>
> diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
> index 56c53ab3618e..fb2ed85f9083 100644
> --- a/fs/ceph/inode.c
> +++ b/fs/ceph/inode.c
> @@ -2408,10 +2408,10 @@ 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_CHGATTR))
>   		mask |= CEPH_CAP_AUTH_SHARED;
>   
> -	if (want & (STATX_NLINK|STATX_CTIME)) {
> +	if (want & (STATX_NLINK|STATX_CTIME|STATX_CHGATTR)) {
>   		/*
>   		 * The link count for directories depends on inode->i_subdirs,
>   		 * and that is only updated when Fs caps are held.
> @@ -2422,11 +2422,10 @@ 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_CHGATTR))
>   		mask |= CEPH_CAP_FILE_SHARED;
>   
> -	if (want & (STATX_CTIME))
> +	if (want & (STATX_CTIME|STATX_CHGATTR))
>   		mask |= CEPH_CAP_XATTR_SHARED;
>   
>   	return mask;
> @@ -2468,6 +2467,11 @@ int ceph_getattr(struct user_namespace *mnt_userns, const struct path *path,
>   		valid_mask |= STATX_BTIME;
>   	}
>   
> +	if (request_mask & STATX_CHGATTR) {
> +		stat->chgattr = inode_peek_iversion_raw(inode);
> +		valid_mask |= STATX_CHGATTR;
> +	}
> +
>   	if (ceph_snap(inode) == CEPH_NOSNAP)
>   		stat->dev = inode->i_sb->s_dev;
>   	else

Reviewed-by: Xiubo Li <xiubli@redhat.com>
diff mbox series

Patch

diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 56c53ab3618e..fb2ed85f9083 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -2408,10 +2408,10 @@  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_CHGATTR))
 		mask |= CEPH_CAP_AUTH_SHARED;
 
-	if (want & (STATX_NLINK|STATX_CTIME)) {
+	if (want & (STATX_NLINK|STATX_CTIME|STATX_CHGATTR)) {
 		/*
 		 * The link count for directories depends on inode->i_subdirs,
 		 * and that is only updated when Fs caps are held.
@@ -2422,11 +2422,10 @@  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_CHGATTR))
 		mask |= CEPH_CAP_FILE_SHARED;
 
-	if (want & (STATX_CTIME))
+	if (want & (STATX_CTIME|STATX_CHGATTR))
 		mask |= CEPH_CAP_XATTR_SHARED;
 
 	return mask;
@@ -2468,6 +2467,11 @@  int ceph_getattr(struct user_namespace *mnt_userns, const struct path *path,
 		valid_mask |= STATX_BTIME;
 	}
 
+	if (request_mask & STATX_CHGATTR) {
+		stat->chgattr = inode_peek_iversion_raw(inode);
+		valid_mask |= STATX_CHGATTR;
+	}
+
 	if (ceph_snap(inode) == CEPH_NOSNAP)
 		stat->dev = inode->i_sb->s_dev;
 	else