libc-bottom-half/cloudlibc/src/libc/sys/stat/utimensat.c

   1 // Copyright (c) 2015-2016 Nuxi, https://nuxi.nl/
   2 //
   3 // SPDX-License-Identifier: BSD-2-Clause
   4
   5 #include <common/errno.h>
   6
   7 #include <sys/stat.h>
   8
   9 #include <wasi/api.h>
  10 #include <errno.h>
  11 #include <fcntl.h>
  12 #include <string.h>
  13
  14 #include "stat_impl.h"
  15
  16 int __wasilibc_nocwd_utimensat(int fd, const char *path, const struct timespec times[2],
  17                                int flag) {
  18   // Convert timestamps and extract NOW/OMIT flags.
  19   __wasi_timestamp_t st_atim;
  20   __wasi_timestamp_t st_mtim;
  21   __wasi_fstflags_t flags;
  22   if (!utimens_get_timestamps(times, &st_atim, &st_mtim, &flags)) {
  23     errno = EINVAL;
  24     return -1;
  25   }
  26
  27   // Create lookup properties.
  28   __wasi_lookupflags_t lookup_flags = 0;
  29   if ((flag & AT_SYMLINK_NOFOLLOW) == 0)
  30     lookup_flags |= __WASI_LOOKUPFLAGS_SYMLINK_FOLLOW;
  31
  32   // Perform system call.
  33   __wasi_errno_t error =
  34       __wasi_path_filestat_set_times(fd, lookup_flags, path, strlen(path), st_atim, st_mtim, flags);
  35   if (error != 0) {
  36     errno = errno_fixup_directory(fd, error);
  37     return -1;
  38   }
  39   return 0;
  40 }