Import sources from 2011-03-30 iso image

1 files changed, 55 insertions, 0 deletions

diff --git a/sys/src/cmd/auth/none.c b/sys/src/cmd/auth/none.c
new file mode 100755
index 000000000..df2a2e5d2
--- /dev/null
+++ b/sys/src/cmd/auth/none.c
@@ -0,0 +1,55 @@
+#include <u.h>
+#include <libc.h>
+#include <auth.h>
+
+char *namespace;
+
+void
+usage(void)
+{
+	fprint(2, "usage: auth/none [-n namespace] [cmd ...]\n");
+	exits("usage");
+}
+
+void
+main(int argc, char *argv[])
+{
+	char cmd[256];
+	int fd;
+
+	ARGBEGIN{
+	case 'n':
+		namespace = EARGF(usage());
+		break;
+	default:
+		usage();
+	}ARGEND
+
+	if (rfork(RFENVG|RFNAMEG) < 0)
+		sysfatal("can't make new pgrp");
+
+	fd = open("#c/user", OWRITE);
+	if (fd < 0)
+		sysfatal("can't open #c/user");
+	if (write(fd, "none", strlen("none")) < 0)
+		sysfatal("can't become none");
+	close(fd);
+
+	if (newns("none", namespace) < 0)
+		sysfatal("can't build namespace");
+
+	if (argc > 0) {
+		strecpy(cmd, cmd+sizeof cmd, argv[0]);
+		exec(cmd, &argv[0]);
+		if (strncmp(cmd, "/", 1) != 0
+		&& strncmp(cmd, "./", 2) != 0
+		&& strncmp(cmd, "../", 3) != 0) {
+			snprint(cmd, sizeof cmd, "/bin/%s", argv[0]);
+			exec(cmd, &argv[0]);
+		}
+	} else {
+		strcpy(cmd, "/bin/rc");
+		execl(cmd, cmd, nil);
+	}
+	sysfatal(cmd);
+}