Imported Upstream version 1.1~hg20130323upstream/1.1_hg20130323

1 files changed, 43 insertions, 0 deletions

diff --git a/src/lib9/run_unix.c b/src/lib9/run_unix.c
new file mode 100644
index 000000000..1b4c6de1b
--- /dev/null
+++ b/src/lib9/run_unix.c
@@ -0,0 +1,43 @@
+// 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.
+
+// +build darwin freebsd linux netbsd openbsd
+
+#include <u.h>
+#include <errno.h>
+#include <sys/wait.h>
+#define NOPLAN9DEFINES
+#include <libc.h>
+
+int
+runcmd(char **argv)
+{
+	int pid, pid1, status;
+	
+	switch(pid = fork()) {
+	case -1:
+		return -1;
+	case 0:
+		execvp(argv[0], argv);
+		fprint(2, "exec %s: %r", argv[0]);
+		_exit(1);
+	}
+	
+	while((pid1 = wait(&status)) < 0) {
+		if(errno != EINTR) {
+			werrstr("waitpid: %r");
+			return -1;
+		}
+	}
+	if(pid1 != pid) {
+		werrstr("unexpected pid in wait");
+		return -1;
+	}
+	if(!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
+		werrstr("unsuccessful exit status %#x", status);
+		return -1;
+	}
+	return 0;
+}
+