text: /* Copyright libuv project contributors. All rights reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to
   * deal in the Software without restriction, including without limitation the
   * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   * sell copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
   * IN THE SOFTWARE.
   */
  
  #include "uv.h"
  #include "task.h"
  
  #if defined(__unix__) || defined(__POSIX__) || \
      defined(__APPLE__) || defined(__sun) || \
      defined(_AIX) || defined(__MVS__)
  #include <unistd.h> /* unlink, etc. */
  #else
  # include <direct.h>
  # include <io.h>
  # define unlink _unlink
  #endif
  
  static const char fixture[] = "test/fixtures/load_error.node";
  static const char dst[] = "test_file_dst";
  static int result_check_count;
  
  
  static void fail_cb(uv_fs_t* req) {
    FATAL("fail_cb should not have been called");
  }
  
  static void handle_result(uv_fs_t* req) {
    uv_fs_t stat_req;
    uint64_t size;
    uint64_t mode;
    int r;
  
    ASSERT(req->fs_type == UV_FS_COPYFILE);
    ASSERT(req->result == 0);
  
    /* Verify that the file size and mode are the same. */
    r = uv_fs_stat(NULL, &stat_req, req->path, NULL);
    ASSERT(r == 0);
    size = stat_req.statbuf.st_size;
    mode = stat_req.statbuf.st_mode;
    uv_fs_req_cleanup(&stat_req);
    r = uv_fs_stat(NULL, &stat_req, dst, NULL);
    ASSERT(r == 0);
    ASSERT(stat_req.statbuf.st_size == size);
    ASSERT(stat_req.statbuf.st_mode == mode);
    uv_fs_req_cleanup(&stat_req);
    uv_fs_req_cleanup(req);
    result_check_count++;
  }
  
  
  static void touch_file(const char* name, unsigned int size) {
    uv_file file;
    uv_fs_t req;
    uv_buf_t buf;
    int r;
    unsigned int i;
  
    r = uv_fs_open(NULL, &req, name, O_WRONLY | O_CREAT | O_TRUNC,
                   S_IWUSR | S_IRUSR, NULL);
    uv_fs_req_cleanup(&req);
    ASSERT(r >= 0);
    file = r;
  
    buf = uv_buf_init("a", 1);
  
    /* Inefficient but simple. */
    for (i = 0; i < size; i++) {
      r = uv_fs_write(NULL, &req, file, &buf, 1, i, NULL);
      uv_fs_req_cleanup(&req);
      ASSERT(r >= 0);
    }
  
    r = uv_fs_close(NULL, &req, file, NULL);
    uv_fs_req_cleanup(&req);
    ASSERT(r == 0);
  }
  
  
  TEST_IMPL(fs_copyfile) {
    const char src[] = "test_file_src";
    uv_loop_t* loop;
    uv_fs_t req;
    int r;
  
    loop = uv_default_loop();
  
    /* Fails with EINVAL if bad flags are passed. */
    r = uv_fs_copyfile(NULL, &req, src, dst, -1, NULL);
    ASSERT(r == UV_EINVAL);
    uv_fs_req_cleanup(&req);
  
    /* Fails with ENOENT if source does not exist. */
    unlink(src);
    unlink(dst);
    r = uv_fs_copyfile(NULL, &req, src, dst, 0, NULL);
    ASSERT(req.result == UV_ENOENT);
    ASSERT(r == UV_ENOENT);
    uv_fs_req_cleanup(&req);
    /* The destination should not exist. */
    r = uv_fs_stat(NULL, &req, dst, NULL);
    ASSERT(r != 0);
    uv_fs_req_cleanup(&req);
  
    /* Copies file synchronously. Creates new file. */
    unlink(dst);
    r = uv_fs_copyfile(NULL, &req, fixture, dst, 0, NULL);
    ASSERT(r == 0);
    handle_result(&req);
  
    /* Copies a file of size zero. */
    unlink(dst);
    touch_file(src, 0);
    r = uv_fs_copyfile(NULL, &req, src, dst, 0, NULL);
    ASSERT(r == 0);
    handle_result(&req);
  
    /* Copies file synchronously. Overwrites existing file. */
    r = uv_fs_copyfile(NULL, &req, fixture, dst, 0, NULL);
    ASSERT(r == 0);
    handle_result(&req);
  
    /* Fails to overwrites existing file. */
    r = uv_fs_copyfile(NULL, &req, fixture, dst, UV_FS_COPYFILE_EXCL, NULL);
    ASSERT(r == UV_EEXIST);
    uv_fs_req_cleanup(&req);
  
    /* Truncates when an existing destination is larger than the source file. */
    touch_file(src, 1);
    r = uv_fs_copyfile(NULL, &req, src, dst, 0, NULL);
    ASSERT(r == 0);
    handle_result(&req);
  
    /* Copies a larger file. */
    unlink(dst);
    touch_file(src, 4096 * 2);
    r = uv_fs_copyfile(NULL, &req, src, dst, 0, NULL);
    ASSERT(r == 0);
    handle_result(&req);
    unlink(src);
  
    /* Copies file asynchronously */
    unlink(dst);
    r = uv_fs_copyfile(loop, &req, fixture, dst, 0, handle_result);
    ASSERT(r == 0);
    ASSERT(result_check_count == 5);
    uv_run(loop, UV_RUN_DEFAULT);
    ASSERT(result_check_count == 6);
  
    /* If the flags are invalid, the loop should not be kept open */
    unlink(dst);
    r = uv_fs_copyfile(loop, &req, fixture, dst, -1, fail_cb);
    ASSERT(r == UV_EINVAL);
    uv_run(loop, UV_RUN_DEFAULT);
  
    /* Copies file using UV_FS_COPYFILE_FICLONE. */
    unlink(dst);
    r = uv_fs_copyfile(NULL, &req, fixture, dst, UV_FS_COPYFILE_FICLONE, NULL);
    ASSERT(r == 0);
    handle_result(&req);
  
    /* Copies file using UV_FS_COPYFILE_FICLONE_FORCE. */
    unlink(dst);
    r = uv_fs_copyfile(NULL, &req, fixture, dst, UV_FS_COPYFILE_FICLONE_FORCE,
                       NULL);
    ASSERT(r == 0 || r == UV_ENOSYS || r == UV_ENOTSUP);
  
    if (r == 0)
      handle_result(&req);
  
  #ifndef _WIN32
    /* Copying respects permissions/mode. */
    unlink(dst);
    touch_file(dst, 0);
    chmod(dst, S_IRUSR|S_IRGRP|S_IROTH); /* Sets file mode to 444 (read-only). */
    r = uv_fs_copyfile(NULL, &req, fixture, dst, 0, NULL);
    ASSERT(req.result == UV_EACCES);
    ASSERT(r == UV_EACCES);
    uv_fs_req_cleanup(&req);
  #endif
  
    unlink(dst); /* Cleanup */
    return 0;
  }
  