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authorChristian Brauner <christian.brauner@ubuntu.com>2021-01-21 14:19:30 +0100
committerChristian Brauner <christian.brauner@ubuntu.com>2021-01-24 14:27:17 +0100
commit0d56a4518d5eaf595a24ab2202e171330bb2ed72 (patch)
tree8abcffb945ef36eb5bd290271a34a246c1d9379d /fs/sysv
parent71bc356f93a1c589fad13f7487258f89c417976e (diff)
downloadlinux-0d56a4518d5eaf595a24ab2202e171330bb2ed72.tar.gz
stat: handle idmapped mounts
The generic_fillattr() helper fills in the basic attributes associated with an inode. Enable it to handle idmapped mounts. If the inode is accessed through an idmapped mount map it into the mount's user namespace before we store the uid and gid. If the initial user namespace is passed nothing changes so non-idmapped mounts will see identical behavior as before. Link: https://lore.kernel.org/r/20210121131959.646623-12-christian.brauner@ubuntu.com Cc: Christoph Hellwig <hch@lst.de> Cc: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: James Morris <jamorris@linux.microsoft.com> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Diffstat (limited to 'fs/sysv')
-rw-r--r--fs/sysv/itree.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/sysv/itree.c b/fs/sysv/itree.c
index bcb67b0cabe7..83cffab6955f 100644
--- a/fs/sysv/itree.c
+++ b/fs/sysv/itree.c
@@ -445,7 +445,7 @@ int sysv_getattr(const struct path *path, struct kstat *stat,
u32 request_mask, unsigned int flags)
{
struct super_block *s = path->dentry->d_sb;
- generic_fillattr(d_inode(path->dentry), stat);
+ generic_fillattr(&init_user_ns, d_inode(path->dentry), stat);
stat->blocks = (s->s_blocksize / 512) * sysv_nblocks(s, stat->size);
stat->blksize = s->s_blocksize;
return 0;