src/lib/osunix.c 1.45

Index: src/lib/osunix.c
===================================================================
RCS file: /projects/compbio/cvsroot/kent/src/lib/osunix.c,v
retrieving revision 1.44
retrieving revision 1.45
diff -b -B -U 4 -r1.44 -r1.45
--- src/lib/osunix.c	22 Nov 2009 00:18:04 -0000	1.44
+++ src/lib/osunix.c	24 Feb 2010 00:51:00 -0000	1.45
@@ -12,8 +12,9 @@
 #include "portable.h"
 #include "portimpl.h"
 #include <sys/wait.h>
 #include <regex.h>
+#include <utime.h>
 
 
 static char const rcsid[] = "$Id$";
 
@@ -610,4 +611,22 @@
 va_start(args, format);
 vaDumpStack(format, args);
 va_end(args);
 }
+
+void touchFile(char *fileName)
+/* If file exists, set its access and mod times to now.  If it doesn't exist, create it. */
+{
+if (fileExists(fileName))
+    {
+    struct utimbuf ut;
+    ut.actime = ut.modtime = clock1();
+    int ret = utime(fileName, &ut);
+    if (ret != 0)
+	errnoAbort("utime(%s, clock1()) failed", fileName);
+    }
+else
+    {
+    FILE *f = mustOpen(fileName, "w");
+    carefulClose(&f);
+    }
+}