From ab1c006ab2972d16803b8a959750a73ba81eced7 Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Thu, 23 Jun 2022 17:54:01 +0900 Subject: [PATCH] nilfs2: fix incorrect masking of permission flags for symlinks commit 5924e6ec1585445f251ea92713eb15beb732622a upstream. The permission flags of newly created symlinks are wrongly dropped on nilfs2 with the current umask value even though symlinks should have 777 (rwxrwxrwx) permissions: $ umask 0022 $ touch file && ln -s file symlink; ls -l file symlink -rw-r--r--. 1 root root 0 Jun 23 16:29 file lrwxr-xr-x. 1 root root 4 Jun 23 16:29 symlink -> file This fixes the bug by inserting a missing check that excludes symlinks. Link: https://lkml.kernel.org/r/1655974441-5612-1-git-send-email-konishi.ryusuke@gmail.com Signed-off-by: Ryusuke Konishi Reported-by: Tommy Pettersson Reported-by: Ciprian Craciun Tested-by: Ryusuke Konishi Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- fs/nilfs2/nilfs.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h index 7dcb77d38759..aceb8aadca14 100644 --- a/fs/nilfs2/nilfs.h +++ b/fs/nilfs2/nilfs.h @@ -198,6 +198,9 @@ static inline int nilfs_acl_chmod(struct inode *inode) static inline int nilfs_init_acl(struct inode *inode, struct inode *dir) { + if (S_ISLNK(inode->i_mode)) + return 0; + inode->i_mode &= ~current_umask(); return 0; }