From c4ab036a2f41184ba969f86dda73be361c9ab39d Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Tue, 23 Feb 2021 17:44:08 -0500
Subject: [PATCH] spufs: fix bogosity in S_ISGID handling
clearing everything *except* S_ISGID (including the S_IFDIR, among
other things) is wrong. Just use init_inode_owner() and be done
with that...
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
arch/powerpc/platforms/cell/spufs/inode.c | 10 ++--------
1 file changed, 2 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index b83a3670bd74..bed05b644c2c 100644
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -236,10 +236,7 @@ spufs_mkdir(struct inode *dir, struct dentry *dentry, unsigned int flags,
if (!inode)
return -ENOSPC;
- if (dir->i_mode & S_ISGID) {
- inode->i_gid = dir->i_gid;
- inode->i_mode &= S_ISGID;
- }
+ inode_init_owner(&init_user_ns, inode, dir, mode | S_IFDIR);
ctx = alloc_spu_context(SPUFS_I(dir)->i_gang); /* XXX gang */
SPUFS_I(inode)->i_ctx = ctx;
if (!ctx) {
@@ -470,10 +467,7 @@ spufs_mkgang(struct inode *dir, struct dentry *dentry, umode_t mode)
goto out;
ret = 0;
- if (dir->i_mode & S_ISGID) {
- inode->i_gid = dir->i_gid;
- inode->i_mode &= S_ISGID;
- }
+ inode_init_owner(&init_user_ns, inode, dir, mode | S_IFDIR);
gang = alloc_spu_gang();
SPUFS_I(inode)->i_ctx = NULL;
SPUFS_I(inode)->i_gang = gang;