static int mkdir_parents_internal(const char *prefix, const char *path, mode_t mode, bool apply) {
const char *p, *e;
int r;
assert(path);
if (prefix && !path_startswith(path, prefix))
return -ENOTDIR;
/* return immediately if directory exists */
e = strrchr(path, '/');
if (!e)
return -EINVAL;
if (e == path)
return 0;
char buf[PATH_MAX + 1];
p = buf;
assert(e-path < sizeof(buf));
memcpy(buf, path, e-path);
buf[e-path] = 0;
r = is_dir(p);
if (r > 0)
return 0;
if (r == 0)
return -ENOTDIR;
/* create every parent directory in the path, except the last component */
p = path + strspn(path, "/");
for (;;) {
char t[strlen(path) + 1];
e = p + strcspn(p, "/");
p = e + strspn(e, "/");
/* Is this the last component? If so, then we're
* done */
if (*p == 0)
return 0;
memcpy(t, path, e - path);
t[e-path] = 0;
if (prefix && path_startswith(prefix, t))
continue;
r = label_mkdir(t, mode, apply);
if (r < 0 && errno != EEXIST)
return -errno;
}
}
static int mkdir_p_internal(const char *prefix, const char *path, mode_t mode, bool apply) {
int r;
/* Like mkdir -p */
r = mkdir_parents_internal(prefix, path, mode, apply);
if (r < 0)
return r;
r = label_mkdir(path, mode, apply);
if (r < 0 && (errno != EEXIST || is_dir(path) <= 0))
return -errno;
return 0;
}
static int mkdir_safe_internal(const char *path, mode_t mode, uid_t uid, gid_t gid, bool apply) {
struct stat st;
if (label_mkdir(path, mode, apply) >= 0)
if (chmod_and_chown(path, mode, uid, gid) < 0)
return -errno;
if (lstat(path, &st) < 0)
return -errno;
if ((st.st_mode & 0777) != mode ||
st.st_uid != uid ||
st.st_gid != gid ||
!S_ISDIR(st.st_mode)) {
errno = EEXIST;
return -errno;
}
return 0;
}
int mkdir_label(const char *path, mode_t mode) {
return label_mkdir(path, mode, true);
}
