From 6e3e2c4362e41a2f18e3f7a5ad81bd2f49a47b85 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 1 Mar 2021 20:37:10 -0500 Subject: new helper: inode_wrong_type() inode_wrong_type(inode, mode) returns true if setting inode->i_mode to given value would've changed the inode type. We have enough of those checks open-coded to make a helper worthwhile. Signed-off-by: Al Viro --- include/linux/fs.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include') diff --git a/include/linux/fs.h b/include/linux/fs.h index ec8f3ddf4a6a..9e0d76a41229 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2884,6 +2884,11 @@ static inline bool execute_ok(struct inode *inode) return (inode->i_mode & S_IXUGO) || S_ISDIR(inode->i_mode); } +static inline bool inode_wrong_type(const struct inode *inode, umode_t mode) +{ + return (inode->i_mode ^ mode) & S_IFMT; +} + static inline void file_start_write(struct file *file) { if (!S_ISREG(file_inode(file)->i_mode)) -- cgit v1.2.3