along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <dirent.h>
#include <errno.h>
#include <stddef.h>
#include <stdio.h>
#include "mkdir.h"
#include "parse-util.h"
#include "path-util.h"
+#include "stat-util.h"
#include "string-util.h"
#include "strv.h"
//#include "time-util.h"
int get_files_in_directory(const char *path, char ***list) {
_cleanup_closedir_ DIR *d = NULL;
+ struct dirent *de;
size_t bufsize = 0, n = 0;
_cleanup_strv_free_ char **l = NULL;
if (!d)
return -errno;
- for (;;) {
- struct dirent *de;
-
- errno = 0;
- de = readdir(d);
- if (!de && errno > 0)
- return -errno;
- if (!de)
- break;
-
+ FOREACH_DIRENT_ALL(de, d, return -errno) {
dirent_ensure_type(d, de);
if (!dirent_is_file(de))
return n;
}
-#if 0 /// UNNEEDED by elogind
static int getenv_tmp_dir(const char **ret_path) {
const char *n;
int r, ret = 0;
return 0;
}
+#if 0 /// UNNEEDED by elogind
int var_tmp_dir(const char **ret) {
/* Returns the location for "larger" temporary files, that is backed by physical storage if available, and thus
return tmp_dir_internal("/var/tmp", ret);
}
+#endif // 0
int tmp_dir(const char **ret) {
return tmp_dir_internal("/tmp", ret);
}
+#if 0 /// UNNEEDED by elogind
int inotify_add_watch_fd(int fd, int what, uint32_t mask) {
char path[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int) + 1];
int r;
return r;
}
+#endif // 0
int chase_symlinks(const char *path, const char *original_root, unsigned flags, char **ret) {
_cleanup_free_ char *buffer = NULL, *done = NULL, *root = NULL;
_cleanup_close_ int fd = -1;
unsigned max_follow = 32; /* how many symlinks to follow before giving up and returning ELOOP */
+ bool exists = true;
char *todo;
int r;
/* Otherwise let's see what this is. */
child = openat(fd, first + n, O_CLOEXEC|O_NOFOLLOW|O_PATH);
- if (child < 0)
+ if (child < 0) {
+
+ if (errno == ENOENT &&
+ (flags & CHASE_NONEXISTENT) &&
+ (isempty(todo) || path_is_safe(todo))) {
+
+ /* If CHASE_NONEXISTENT is set, and the path does not exist, then that's OK, return
+ * what we got so far. But don't allow this if the remaining path contains "../ or "./"
+ * or something else weird. */
+
+ if (!strextend(&done, first, todo, NULL))
+ return -ENOMEM;
+
+ exists = false;
+ break;
+ }
+
return -errno;
+ }
if (fstat(child, &st) < 0)
return -errno;
if (S_ISLNK(st.st_mode)) {
+ char *joined;
+
_cleanup_free_ char *destination = NULL;
/* This is a symlink, in this case read the destination. But let's make sure we don't follow
if (fd < 0)
return -errno;
- free_and_replace(buffer, destination);
-
- todo = buffer;
free(done);
/* Note that we do not revalidate the root, we take it as is. */
return -ENOMEM;
}
- } else {
- char *joined;
+ }
- /* A relative destination. If so, this is what we'll prefix what's left to do with what
- * we just read, and start the loop again, but remain in the current directory. */
+ /* Prefix what's left to do with what we just read, and start the loop again,
+ * but remain in the current directory. */
- joined = strjoin("/", destination, todo);
- if (!joined)
- return -ENOMEM;
+ joined = strjoin("/", destination, todo);
+ if (!joined)
+ return -ENOMEM;
- free(buffer);
- todo = buffer = joined;
- }
+ free(buffer);
+ todo = buffer = joined;
continue;
}
return -ENOMEM;
}
- *ret = done;
- done = NULL;
+ if (ret) {
+ *ret = done;
+ done = NULL;
+ }
- return 0;
+ return exists;
}
-#endif // 0