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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include <sys/stat.h>
      6 #include <sys/types.h>
      7 #include <unistd.h>
      8 #include <cstring>
      9 
     10 #include "base/logging.h"
     11 #include "native_client/src/trusted/service_runtime/include/sys/stat.h"
     12 #include "native_client/src/trusted/service_runtime/include/sys/time.h"
     13 
     14 namespace nacl {
     15 namespace nonsfi {
     16 
     17 void NaClAbiTimeSpecToTimeSpec(const struct nacl_abi_timespec& nacl_timespec,
     18                                struct timespec* host_timespec) {
     19   host_timespec->tv_sec = nacl_timespec.tv_sec;
     20   host_timespec->tv_nsec = nacl_timespec.tv_nsec;
     21 }
     22 
     23 void TimeSpecToNaClAbiTimeSpec(const struct timespec& host_timespec,
     24                                struct nacl_abi_timespec* nacl_timespec) {
     25   nacl_timespec->tv_sec = host_timespec.tv_sec;
     26   nacl_timespec->tv_nsec = host_timespec.tv_nsec;
     27 }
     28 
     29 void StatToNaClAbiStat(
     30     const struct stat& host_stat, struct nacl_abi_stat* nacl_stat) {
     31   // Some fields in host_stat, such as st_dev, group/other bits of mode and
     32   // (a,m,c)timensec, are ignored to sync with the NaCl's original
     33   // implementation. Please see also NaClAbiStatHostDescStatXlateCtor in
     34   // native_client/src/trusted/desc/posix/nacl_desc.c.
     35   std::memset(nacl_stat, 0, sizeof(*nacl_stat));
     36   nacl_stat->nacl_abi_st_dev = 0;
     37   nacl_stat->nacl_abi_st_ino = host_stat.st_ino;
     38   nacl_abi_mode_t mode;
     39   switch (host_stat.st_mode & S_IFMT) {
     40     case S_IFREG:
     41       mode = NACL_ABI_S_IFREG;
     42       break;
     43     case S_IFDIR:
     44       mode = NACL_ABI_S_IFDIR;
     45       break;
     46     case S_IFCHR:
     47       mode = NACL_ABI_S_IFCHR;
     48       break;
     49     default:
     50       LOG(WARNING) << "Unusual NaCl descriptor type: "
     51                    << (host_stat.st_mode & S_IFMT);
     52       mode = NACL_ABI_S_UNSUP;
     53   }
     54   if (host_stat.st_mode & S_IRUSR)
     55     mode |= NACL_ABI_S_IRUSR;
     56   if (host_stat.st_mode & S_IWUSR)
     57     mode |= NACL_ABI_S_IWUSR;
     58   if (host_stat.st_mode & S_IXUSR)
     59     mode |= NACL_ABI_S_IXUSR;
     60   nacl_stat->nacl_abi_st_mode = mode;
     61   nacl_stat->nacl_abi_st_nlink = host_stat.st_nlink;
     62   nacl_stat->nacl_abi_st_uid = -1;  // Not root
     63   nacl_stat->nacl_abi_st_gid = -1;  // Not wheel
     64   nacl_stat->nacl_abi_st_rdev = 0;
     65   nacl_stat->nacl_abi_st_size = host_stat.st_size;
     66   nacl_stat->nacl_abi_st_blksize = 0;
     67   nacl_stat->nacl_abi_st_blocks = 0;
     68   nacl_stat->nacl_abi_st_atime = host_stat.st_atime;
     69   nacl_stat->nacl_abi_st_mtime = host_stat.st_mtime;
     70   nacl_stat->nacl_abi_st_ctime = host_stat.st_ctime;
     71 }
     72 
     73 }  // namespace nonsfi
     74 }  // namespace nacl
     75