1 files changed, 73 insertions, 0 deletions
diff --git a/src/basic/glob-util.c b/src/basic/glob-util.c
new file mode 100644
index 0000000..bc0278e
--- /dev/null
+++ b/src/basic/glob-util.c
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "dirent-util.h"
+#include "errno-util.h"
+#include "glob-util.h"
+#include "macro.h"
+#include "path-util.h"
+#include "strv.h"
+
+static void closedir_wrapper(void* v) {
+        (void) closedir(v);
+}
+
+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 = closedir_wrapper;
+        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_or_else(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, int flags) {
+        _cleanup_globfree_ glob_t g = {};
+        int k;
+
+        k = safe_glob(path, GLOB_NOSORT|GLOB_BRACE|flags, &g);
+        if (k < 0)
+                return k;
+
+        return strv_extend_strv(strv, g.gl_pathv, false);
+}