Import sources from 2011-03-30 iso image

1 files changed, 62 insertions, 0 deletions

diff --git a/sys/src/cmd/auth/newns.c b/sys/src/cmd/auth/newns.c
new file mode 100755
index 000000000..792e8e55c
--- /dev/null
+++ b/sys/src/cmd/auth/newns.c
@@ -0,0 +1,62 @@
+#include <u.h>
+#include <libc.h>
+#include <auth.h>
+
+void
+usage(void)
+{
+	fprint(2, "usage: newns [-ad] [-n namespace] [cmd [args...]]\n");
+	exits("usage");
+}
+
+static int
+rooted(char *s)
+{
+	if(s[0] == '/')
+		return 1;
+	if(s[0] == '.' && s[1] == '/')
+		return 1;
+	if(s[0] == '.' && s[1] == '.' && s[2] == '/')
+		return 1;
+	return 0;
+}
+
+void
+main(int argc, char **argv)
+{
+	extern int newnsdebug;
+	char *defargv[] = { "/bin/rc", "-i", nil };
+	char *nsfile, err[ERRMAX];
+	int add;
+
+	rfork(RFNAMEG);
+	add = 0;
+	nsfile = "/lib/namespace";
+	ARGBEGIN{
+	case 'a':
+		add = 1;
+		break;
+	case 'd':
+		newnsdebug = 1;
+		break;
+	case 'n':
+		nsfile = ARGF();
+		break;
+	default:
+		usage();
+		break;
+	}ARGEND
+	if(argc == 0)
+		argv = defargv;
+	if (add)
+		addns(getuser(), nsfile);
+	else
+		newns(getuser(), nsfile);
+	exec(argv[0], argv);
+	if(!rooted(argv[0])){
+		rerrstr(err, sizeof err);
+		exec(smprint("/bin/%s", argv[0]), argv);
+		errstr(err, sizeof err);
+	}
+	sysfatal("exec: %s: %r", argv[0]);
+}