components/filesystem/shared_impl.cc

   1 // Copyright 2015 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 "components/filesystem/shared_impl.h"
   6
   7 #include <errno.h>
   8 #include <sys/stat.h>
   9 #include <sys/types.h>
  10 #include <time.h>
  11 #include <unistd.h>
  12
  13 #include "base/logging.h"
  14 #include "components/filesystem/futimens.h"
  15 #include "components/filesystem/util.h"
  16
  17 namespace filesystem {
  18
  19 void StatFD(int fd, FileType type, const StatFDCallback& callback) {
  20   DCHECK_NE(fd, -1);
  21
  22   struct stat buf;
  23   if (fstat(fd, &buf) != 0) {
  24     callback.Run(ErrnoToError(errno), nullptr);
  25     return;
  26   }
  27
  28   FileInformationPtr file_info(FileInformation::New());
  29   file_info->type = type;
  30   // Only fill in |size| for files.
  31   if (S_ISREG(buf.st_mode)) {
  32     file_info->size = static_cast<int64_t>(buf.st_size);
  33   } else {
  34     LOG_IF(WARNING, !S_ISDIR(buf.st_mode))
  35         << "Unexpected fstat() of special file";
  36     file_info->size = 0;
  37   }
  38   file_info->atime = Timespec::New();
  39   file_info->mtime = Timespec::New();
  40 #if defined(OS_ANDROID)
  41   file_info->atime->seconds = static_cast<int64_t>(buf.st_atime);
  42   file_info->atime->nanoseconds = static_cast<int32_t>(buf.st_atime_nsec);
  43   file_info->mtime->seconds = static_cast<int64_t>(buf.st_mtime);
  44   file_info->mtime->nanoseconds = static_cast<int32_t>(buf.st_mtime_nsec);
  45 #else
  46   file_info->atime->seconds = static_cast<int64_t>(buf.st_atim.tv_sec);
  47   file_info->atime->nanoseconds = static_cast<int32_t>(buf.st_atim.tv_nsec);
  48   file_info->mtime->seconds = static_cast<int64_t>(buf.st_mtim.tv_sec);
  49   file_info->mtime->nanoseconds = static_cast<int32_t>(buf.st_mtim.tv_nsec);
  50 #endif
  51
  52   callback.Run(ERROR_OK, file_info.Pass());
  53 }
  54
  55 void TouchFD(int fd,
  56              TimespecOrNowPtr atime,
  57              TimespecOrNowPtr mtime,
  58              const TouchFDCallback& callback) {
  59   DCHECK_NE(fd, -1);
  60
  61   struct timespec times[2];
  62   if (Error error = TimespecOrNowToStandardTimespec(atime.get(), &times[0])) {
  63     callback.Run(error);
  64     return;
  65   }
  66   if (Error error = TimespecOrNowToStandardTimespec(mtime.get(), &times[1])) {
  67     callback.Run(error);
  68     return;
  69   }
  70
  71   if (futimens(fd, times) != 0) {
  72     callback.Run(ErrnoToError(errno));
  73     return;
  74   }
  75
  76   callback.Run(ERROR_OK);
  77 }
  78
  79 }  // namespace filesystem