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-rw-r--r--fs/attr.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/attr.c b/fs/attr.c
index 91dbe2a107f2..caf2aa521e2b 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -175,6 +175,13 @@ int notify_change(struct dentry * dentry, struct iattr * attr)
return -EPERM;
}
+ if ((ia_valid & ATTR_MODE)) {
+ mode_t amode = attr->ia_mode;
+ /* Flag setting protected by i_mutex */
+ if (is_sxid(amode))
+ inode->i_flags &= ~S_NOSEC;
+ }
+
now = current_fs_time(inode->i_sb);
attr->ia_ctime = now;