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| author | Christian Brauner <brauner@kernel.org> | 2024-01-23 19:25:51 +0300 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2024-01-23 19:56:30 +0300 |
| commit | 0000ff2523df42bcf3c2fe3e8daaeca038835487 (patch) | |
| tree | 1be5d8f49a61fe06ce678aba9fa55cf513caf7c0 /include/linux/fs.h | |
| parent | bd46543d7f9a8b2c03420499b1885287e96aaf28 (diff) | |
| parent | 42c3732fa8073717dd7d924472f1c0bc5b452fdc (diff) | |
| download | linux-0000ff2523df42bcf3c2fe3e8daaeca038835487.tar.xz | |
Merge tag 'exportfs-6.9' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/cel/linux
Merge exportfs fixes from Chuck Lever:
* tag 'exportfs-6.9' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/cel/linux:
fs: Create a generic is_dot_dotdot() utility
exportfs: fix the fallback implementation of the get_name export operation
Link: https://lore.kernel.org/r/BDC2AEB4-7085-4A7C-8DE8-A659FE1DBA6A@oracle.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 4f7cfda29143..4f6669147b9e 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2928,6 +2928,17 @@ extern bool path_is_under(const struct path *, const struct path *); extern char *file_path(struct file *, char *, int); +/** + * 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) +{ + return len && unlikely(name[0] == '.') && + (len == 1 || (len == 2 && name[1] == '.')); +} + #include <linux/err.h> /* needed for stackable file system support */ |