git/linux-net
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/ synced 2026-04-17 22:23:45 -04:00
Code Issues Packages Projects Releases Wiki Activity

fs: add helpers name_is_dot{,dot,_dotdot}

Browse Source 
Rename the helper is_dot_dotdot() into the name_ namespace
and add complementary helpers to check for dot and dotdot
names individually.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://patch.msgid.link/20260128132406.23768-3-amir73il@gmail.com
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Amir Goldstein
2026-01-28 14:24:05 +01:00
committed by Christian Brauner
parent 1992330d90
commit 55fb177d3a
9 changed files with 22 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
include/linux/fs.h
View File

@@ -2844,12 +2844,22 @@ u64 vfsmount_to_propagation_flags(struct vfsmount *mnt);
extern char *file_path(struct file *, char *, int);
static inline bool name_is_dot(const char *name, size_t len)
{
return unlikely(len == 1 && name[0] == '.');
}
static inline bool name_is_dotdot(const char *name, size_t len)
{
return unlikely(len == 2 && name[0] == '.' && name[1] == '.');
}
/**
* is_dot_dotdot - returns true only if @name is "." or ".."
* name_is_dot_dotdot - returns true only if @name is "." or ".."
* @name: file name to check
* @len: length of file name, in bytes
*/
static inline bool is_dot_dotdot(const char *name, size_t len)
static inline bool name_is_dot_dotdot(const char *name, size_t len)
{
return len && unlikely(name[0] == '.') &&
(len == 1 || (len == 2 && name[1] == '.'));