zircon/kernel/lib/libc/string/strnlen.c

// Copyright 2016 The Fuchsia Authors
// Copyright (c) 2008 Travis Geiselbrecht
//
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT

#include <string.h>
#include <sys/types.h>

size_t strnlen(char const *s, size_t count) {
  const char *sc;

  for (sc = s; count-- && *sc != '\0'; ++sc)
    ;
  return sc - s;
}