libc-bottom-half/cloudlibc/src/libc/sys/stat/fstatat.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_fstatat(int fd, const char *restrict path, struct stat *restrict buf,
  17                              int flag) {
  18   // Create lookup properties.
  19   __wasi_lookupflags_t lookup_flags = 0;
  20   if ((flag & AT_SYMLINK_NOFOLLOW) == 0)
  21     lookup_flags |= __WASI_LOOKUPFLAGS_SYMLINK_FOLLOW;
  22
  23   // Perform system call.
  24   __wasi_filestat_t internal_stat;
  25   __wasi_errno_t error =
  26       __wasi_path_filestat_get(fd, lookup_flags, path, &internal_stat);
  27   if (error != 0) {
  28     errno = errno_fixup_directory(fd, error);
  29     return -1;
  30   }
  31   to_public_stat(&internal_stat, buf);
  32   return 0;
  33 }