Bazel client: no longer needs <utime.h>

Also remove a lot of unused header files.

The only remaining header file not available on
Windows is <unistd.h>, but cutting that dependency
will be more complicated because we use read/write
and similar I/O functions from it.

--
MOS_MIGRATED_REVID=139439791

1 files changed, 7 insertions, 0 deletions

diff --git a/src/main/cpp/util/file_posix.cc b/src/main/cpp/util/file_posix.cc
index 7691ee976a..1cfc272562 100644
--- a/src/main/cpp/util/file_posix.cc
+++ b/src/main/cpp/util/file_posix.cc
@@ -18,6 +18,8 @@
 #include <limits.h>  // PATH_MAX
 #include <stdlib.h>  // getenv
 #include <unistd.h>  // access
+#include <utime.h>  // utime
+
 #include <vector>
 
 #include "src/main/cpp/util/errors.h"
@@ -87,6 +89,11 @@ time_t GetMtimeMillisec(const string& path) {
   }
 }
 
+bool SetMtimeMillisec(const string& path, time_t mtime) {
+  struct utimbuf times = { mtime, mtime };
+  return utime(path.c_str(), &times) == 0;
+}
+
 string GetCwd() {
   char cwdbuf[PATH_MAX];
   if (getcwd(cwdbuf, sizeof cwdbuf) == NULL) {