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authorJeff Layton <jlayton@kernel.org>2023-09-12 02:25:50 +0200
committerChristian Brauner <brauner@kernel.org>2023-10-19 11:02:47 +0200
commit5aa8fd9cea2ee0d42c5d92c5eacf0a14bbc4c293 (patch)
tree055147b2649fad285c863547c41cba7d766761bc /fs/namei.c
parentinit/mount: print pretty name of root device when panics (diff)
downloadlinux-5aa8fd9cea2ee0d42c5d92c5eacf0a14bbc4c293.tar.xz
linux-5aa8fd9cea2ee0d42c5d92c5eacf0a14bbc4c293.zip
fs: add a new SB_I_NOUMASK flag
SB_POSIXACL must be set when a filesystem supports POSIX ACLs, but NFSv4 also sets this flag to prevent the VFS from applying the umask on newly-created files. NFSv4 doesn't support POSIX ACLs however, which causes confusion when other subsystems try to test for them. Add a new SB_I_NOUMASK flag that allows filesystems to opt-in to umask stripping without advertising support for POSIX ACLs. Set the new flag on NFSv4 instead of SB_POSIXACL. Also, move mode_strip_umask to namei.h and convert init_mknod and init_mkdir to use it. Signed-off-by: Jeff Layton <jlayton@kernel.org> Message-Id: <20230911-acl-fix-v3-1-b25315333f6c@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/namei.c')
-rw-r--r--fs/namei.c19
1 files changed, 0 insertions, 19 deletions
diff --git a/fs/namei.c b/fs/namei.c
index 567ee547492b..94b27370f468 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3104,25 +3104,6 @@ void unlock_rename(struct dentry *p1, struct dentry *p2)
EXPORT_SYMBOL(unlock_rename);
/**
- * mode_strip_umask - handle vfs umask stripping
- * @dir: parent directory of the new inode
- * @mode: mode of the new inode to be created in @dir
- *
- * Umask stripping depends on whether or not the filesystem supports POSIX
- * ACLs. If the filesystem doesn't support it umask stripping is done directly
- * in here. If the filesystem does support POSIX ACLs umask stripping is
- * deferred until the filesystem calls posix_acl_create().
- *
- * Returns: mode
- */
-static inline umode_t mode_strip_umask(const struct inode *dir, umode_t mode)
-{
- if (!IS_POSIXACL(dir))
- mode &= ~current_umask();
- return mode;
-}
-
-/**
* vfs_prepare_mode - prepare the mode to be used for a new inode
* @idmap: idmap of the mount the inode was found from
* @dir: parent directory of the new inode