commit f9dfa37f75b1c6f484850aa07070a555cfc46cf6
parent a770b91e62098da411ce2b301a28b9b99c2820c0
Author: sin <sin@2f30.org>
Date: Mon, 12 Aug 2013 11:14:56 +0100
Add unshare(1)
No manpage yet.
Diffstat:
| M | Makefile | | | 3 | ++- |
| A | unshare.c | | | 53 | +++++++++++++++++++++++++++++++++++++++++++++++++++++ |
2 files changed, 55 insertions(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
@@ -26,7 +26,8 @@ SRC += \
reboot.c \
rmmod.c \
swapoff.c \
- swapon.c
+ swapon.c \
+ unshare.c
endif
OBJ = $(SRC:.c=.o) $(LIB)
diff --git a/unshare.c b/unshare.c
@@ -0,0 +1,53 @@
+/* See LICENSE file for copyright and license details. */
+#include <sched.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include "util.h"
+
+static void
+usage(void)
+{
+ eprintf("usage: %s program [args]\n", argv0);
+}
+
+int
+main(int argc, char *argv[])
+{
+ int flags = 0;
+
+ ARGBEGIN {
+ case 'm':
+ flags |= CLONE_NEWNS;
+ break;
+ case 'u':
+ flags |= CLONE_NEWUTS;
+ break;
+ case 'i':
+ flags |= CLONE_NEWIPC;
+ break;
+ case 'n':
+ flags |= CLONE_NEWNET;
+ break;
+ case 'p':
+ flags |= CLONE_NEWPID;
+ break;
+ case 'U':
+ flags |= CLONE_NEWUSER;
+ break;
+ default:
+ usage();
+ } ARGEND;
+
+ if (argc < 1)
+ usage();
+
+ if (unshare(flags) < 0)
+ eprintf("unshare:");
+
+ if (execvp(argv[0], argv) < 0)
+ eprintf("execvp:");
+
+ return 0;
+}
