53e1b68390
This follows what the kernel is doing, c.f. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5fd54ace4721fc5ce2bb5aef6318fcf17f421460.
88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
|
|
/***
|
|
This file is part of systemd.
|
|
|
|
Copyright 2010 Lennart Poettering
|
|
|
|
systemd is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2.1 of the License, or
|
|
(at your option) any later version.
|
|
|
|
systemd is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with systemd; If not, see <http://www.gnu.org/licenses/>.
|
|
***/
|
|
|
|
#include <dirent.h>
|
|
#include <errno.h>
|
|
#include <glob.h>
|
|
#include <sys/types.h>
|
|
|
|
#include "dirent-util.h"
|
|
#include "glob-util.h"
|
|
#include "macro.h"
|
|
#include "path-util.h"
|
|
#include "strv.h"
|
|
|
|
int safe_glob(const char *path, int flags, glob_t *pglob) {
|
|
int k;
|
|
|
|
/* We want to set GLOB_ALTDIRFUNC ourselves, don't allow it to be set. */
|
|
assert(!(flags & GLOB_ALTDIRFUNC));
|
|
|
|
if (!pglob->gl_closedir)
|
|
pglob->gl_closedir = (void (*)(void *)) closedir;
|
|
if (!pglob->gl_readdir)
|
|
pglob->gl_readdir = (struct dirent *(*)(void *)) readdir_no_dot;
|
|
if (!pglob->gl_opendir)
|
|
pglob->gl_opendir = (void *(*)(const char *)) opendir;
|
|
if (!pglob->gl_lstat)
|
|
pglob->gl_lstat = lstat;
|
|
if (!pglob->gl_stat)
|
|
pglob->gl_stat = stat;
|
|
|
|
errno = 0;
|
|
k = glob(path, flags | GLOB_ALTDIRFUNC, NULL, pglob);
|
|
|
|
if (k == GLOB_NOMATCH)
|
|
return -ENOENT;
|
|
if (k == GLOB_NOSPACE)
|
|
return -ENOMEM;
|
|
if (k != 0)
|
|
return errno > 0 ? -errno : -EIO;
|
|
if (strv_isempty(pglob->gl_pathv))
|
|
return -ENOENT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int glob_exists(const char *path) {
|
|
_cleanup_globfree_ glob_t g = {};
|
|
int k;
|
|
|
|
assert(path);
|
|
|
|
k = safe_glob(path, GLOB_NOSORT|GLOB_BRACE, &g);
|
|
if (k == -ENOENT)
|
|
return false;
|
|
if (k < 0)
|
|
return k;
|
|
return true;
|
|
}
|
|
|
|
int glob_extend(char ***strv, const char *path) {
|
|
_cleanup_globfree_ glob_t g = {};
|
|
int k;
|
|
|
|
k = safe_glob(path, GLOB_NOSORT|GLOB_BRACE, &g);
|
|
if (k < 0)
|
|
return k;
|
|
|
|
return strv_extend_strv(strv, g.gl_pathv, false);
|
|
}
|