cosmopolitan/libc/calls/renameat-nt.c

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney                              │
│                                                                              │
│ Permission to use, copy, modify, and/or distribute this software for         │
│ any purpose with or without fee is hereby granted, provided that the         │
│ above copyright notice and this permission notice appear in all copies.      │
│                                                                              │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
│ PERFORMANCE OF THIS SOFTWARE.                                                │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/syscall_support-nt.internal.h"
#include "libc/nt/enum/movefileexflags.h"
#include "libc/nt/files.h"

textwindows int sys_renameat_nt(int olddirfd, const char *oldpath, int newdirfd,
                                const char *newpath) {
  char16_t oldpath16[PATH_MAX];
  char16_t newpath16[PATH_MAX];
  if (__mkntpathat(olddirfd, oldpath, 0, oldpath16) == -1 ||
      __mkntpathat(newdirfd, newpath, 0, newpath16) == -1) {
    return -1;
  }
  if (MoveFileEx(oldpath16, newpath16, kNtMovefileReplaceExisting)) {
    return 0;
  } else {
    return __fix_enotdir3(-1, oldpath16, newpath16);
  }
}