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| author | Lennart Poettering <lennart@poettering.net> | 2021-10-23 00:30:14 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2021-10-25 21:51:37 +0200 |
| commit | a068aceafbffcba85398cce636c25d659265087a (patch) | |
| tree | 49fd3b3bb3de7030bade9b43752688d44e9c361b /src/basic/dirent-util.h | |
| parent | a4e70ef7ba3b5e2c050cce5ed2bbf58807505596 (diff) | |
| download | systemd-a068aceafbffcba85398cce636c25d659265087a.tar.gz | |
stat-util: optimize dir_is_empty_at() a bit, by using getdents64()
That way we have a single syscall only for it, instead of the multiple
readdir() and friends do. And we can operate entirely on the stack, no
malloc() implicit.
Diffstat (limited to 'src/basic/dirent-util.h')
| -rw-r--r-- | src/basic/dirent-util.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/basic/dirent-util.h b/src/basic/dirent-util.h index 768cc1de61..a6272f891f 100644 --- a/src/basic/dirent-util.h +++ b/src/basic/dirent-util.h @@ -56,3 +56,9 @@ assert_cc(sizeof_field(struct dirent, d_name) == sizeof_field(struct dirent64, d for (void *_end = (uint8_t*) ({ (de) = (buf); }) + (sz); \ (uint8_t*) (de) < (uint8_t*) _end; \ (de) = (struct dirent*) ((uint8_t*) (de) + (de)->d_reclen)) + +#define DEFINE_DIRENT_BUFFER(name, sz) \ + union { \ + struct dirent de; \ + uint8_t data[(sz) * DIRENT_SIZE_MAX]; \ + } name |