If the ATTR_KILL_S*ID bits are set then any mode change is only for
clearing the setuid/setgid bits. For NFS, skip the mode change and
let the server handle it.
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
fs/nfs/inode.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 45633f9..441bd8b 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -327,6 +327,10 @@ nfs_setattr(struct dentry *dentry, struct iattr *attr)
nfs_inc_stats(inode, NFSIOS_VFSSETATTR);
+ /* skip mode change if it's just for clearing setuid/setgid */
+ if (attr->ia_valid & (ATTR_KILL_SUID | ATTR_KILL_SGID))
+ attr->ia_valid &= ~ATTR_MODE;
+
if (attr->ia_valid & ATTR_SIZE) {
if (!S_ISREG(inode->i_mode) || attr->ia_size == i_size_read(inode))
attr->ia_valid &= ~ATTR_SIZE;
--
1.5.2.1
-
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