bsd: move POSIXy functions back into file_util_posix

This is so the other non-Mac platforms don't need to
build file_util_linux.

Review URL: http://codereview.chromium.org/1732003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@45242 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 62 insertions, 0 deletions

diff --git a/base/file_util_posix.cc b/base/file_util_posix.cc
index 2047636..8947d6a 100644
--- a/base/file_util_posix.cc
+++ b/base/file_util_posix.cc
@@ -713,4 +713,66 @@ bool HasFileBeenModifiedSince(const FileEnumerator::FindInfo& find_info,
   return find_info.stat.st_mtime >= cutoff_time.ToTimeT();
 }
 
+#if !defined(OS_MACOSX)
+bool GetTempDir(FilePath* path) {
+  const char* tmp = getenv("TMPDIR");
+  if (tmp)
+    *path = FilePath(tmp);
+  else
+    *path = FilePath("/tmp");
+  return true;
+}
+
+bool GetShmemTempDir(FilePath* path) {
+  *path = FilePath("/dev/shm");
+  return true;
+}
+
+bool CopyFile(const FilePath& from_path, const FilePath& to_path) {
+  int infile = open(from_path.value().c_str(), O_RDONLY);
+  if (infile < 0)
+    return false;
+
+  int outfile = creat(to_path.value().c_str(), 0666);
+  if (outfile < 0) {
+    close(infile);
+    return false;
+  }
+
+  const size_t kBufferSize = 32768;
+  std::vector<char> buffer(kBufferSize);
+  bool result = true;
+
+  while (result) {
+    ssize_t bytes_read = HANDLE_EINTR(read(infile, &buffer[0], buffer.size()));
+    if (bytes_read < 0) {
+      result = false;
+      break;
+    }
+    if (bytes_read == 0)
+      break;
+    // Allow for partial writes
+    ssize_t bytes_written_per_read = 0;
+    do {
+      ssize_t bytes_written_partial = HANDLE_EINTR(write(
+          outfile,
+          &buffer[bytes_written_per_read],
+          bytes_read - bytes_written_per_read));
+      if (bytes_written_partial < 0) {
+        result = false;
+        break;
+      }
+      bytes_written_per_read += bytes_written_partial;
+    } while (bytes_written_per_read < bytes_read);
+  }
+
+  if (HANDLE_EINTR(close(infile)) < 0)
+    result = false;
+  if (HANDLE_EINTR(close(outfile)) < 0)
+    result = false;
+
+  return result;
+}
+#endif  // defined(OS_MACOSX)
+
 } // namespace file_util