Imported Upstream version 1.1~hg20130323upstream/1.1_hg20130323

1 files changed, 38 insertions, 0 deletions

diff --git a/src/lib9/run_plan9.c b/src/lib9/run_plan9.c
new file mode 100644
index 000000000..2b043cc2c
--- /dev/null
+++ b/src/lib9/run_plan9.c
@@ -0,0 +1,38 @@
+// Copyright 2013 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include <u.h>
+#include <libc.h>
+
+int
+runcmd(char **argv)
+{
+	int pid;
+	Waitmsg *w;
+	
+	switch(pid = fork()) {
+	case -1:
+		return -1;
+	case 0:
+		exec(argv[0], argv);
+		fprint(2, "exec %s: %r", argv[0]);
+		exits("exec");
+	}
+	
+	w = wait();
+	if(w == nil)
+		return -1;
+	if(w->pid != pid) {
+		werrstr("unexpected pid in wait");
+		free(w);
+		return -1;
+	}
+	if(w->msg[0]) {
+		werrstr("unsuccessful exit status: %s", w->msg);
+		free(w);
+		return -1;
+	}
+	free(w);
+	return 0;
+}