+int touch(const char *path) {
+ int fd;
+
+ assert(path);
+
+ if ((fd = open(path, O_WRONLY|O_CREAT|O_CLOEXEC|O_NOCTTY, 0666)) < 0)
+ return -errno;
+
+ close_nointr_nofail(fd);
+ return 0;
+}
+
+char *unquote(const char *s, const char quote) {
+ size_t l;
+ assert(s);
+
+ if ((l = strlen(s)) < 2)
+ return strdup(s);
+
+ if (s[0] == quote && s[l-1] == quote)
+ return strndup(s+1, l-2);
+
+ return strdup(s);
+}
+