add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/open.c
..
..
@@ -666,10 +666,10 @@
666
666
 		newattrs.ia_valid |= ATTR_GID;
667
667
 		newattrs.ia_gid = gid;
668
668
 	}
669
-	if (!S_ISDIR(inode->i_mode))
670
-		newattrs.ia_valid |=
671
-			ATTR_KILL_SUID | ATTR_KILL_SGID | ATTR_KILL_PRIV;
672
669
 	inode_lock(inode);
670
+	if (!S_ISDIR(inode->i_mode))
671
+		newattrs.ia_valid |= ATTR_KILL_SUID | ATTR_KILL_PRIV |
672
+				     setattr_should_drop_sgid(inode);
673
673
 	error = security_path_chown(path, uid, gid);
674
674
 	if (!error)
675
675
 		error = notify_change(path->dentry, &newattrs, &delegated_inode);
..
..
@@ -1112,7 +1112,7 @@
1112
1112
 		lookup_flags |= LOOKUP_IN_ROOT;
1113
1113
 	if (how->resolve & RESOLVE_CACHED) {
1114
1114
 		/* Don't bother even trying for create/truncate/tmpfile open */
1115
-		if (flags & (O_TRUNC | O_CREAT | O_TMPFILE))
1115
+		if (flags & (O_TRUNC | O_CREAT | __O_TMPFILE))
1116
1116
 			return -EAGAIN;
1117
1117
 		lookup_flags |= LOOKUP_CACHED;
1118
1118
 	}