Add utime implementation to libnacl

src/untrusted/nacl/sys_private.c

Index: src/untrusted/nacl/sys_private.c
diff --git a/src/untrusted/nacl/sys_private.c b/src/untrusted/nacl/sys_private.c
index c9d31f3a9e315d2683a4c040580d9ae60af8056b..3e40f2a7e7352261291c1e4af66c74fdbd227115 100644
--- a/src/untrusted/nacl/sys_private.c
+++ b/src/untrusted/nacl/sys_private.c
@@ -23,10 +23,11 @@
 #include <sched.h>
 #include <stdarg.h>
 #include <stdint.h>
+#include <sys/mman.h>
+#include <sys/types.h>
 #include <time.h>
 #include <unistd.h>
-#include <sys/types.h>
-#include <sys/mman.h>
+#include <utime.h>
 
 #include "native_client/src/include/elf32.h"
 #include "native_client/src/untrusted/nacl/getcwd.h"
@@ -252,6 +253,19 @@ int readlink(const char *path, char *buf, int bufsize) {
   return errno_value_call(NACL_SYSCALL(readlink)(path, buf, bufsize));
 }
 
+int utime(const char *path, const struct utimbuf *buf) {

[Mark Seaborn, 2015/04/07 19:08:43]

If utime.c calls utimes(), you don't need this here.

[Sam Clegg, 2015/04/10 21:18:55]

Good idea.  Done.

+  struct timeval times[2];
+  struct timeval* tv = NULL;

[Mark Seaborn, 2015/04/07 19:08:43]

Use " *" spacing

[Sam Clegg, 2015/04/10 21:18:55]

Acknowledged.

+  if (buf != NULL) {
+    times[0].tv_sec = buf->actime;
+    times[1].tv_sec = buf->modtime;
+    times[0].tv_usec = 0;
+    times[1].tv_usec = 0;
+    tv = times;
+  }
+  return errno_value_call(NACL_SYSCALL(utimes)(path, tv));
+}
+
 int utimes(const char *path, const struct timeval times[2]) {
   return errno_value_call(NACL_SYSCALL(utimes)(path, times));
 }