Mercurial > hg > toybox
view toys/other/unshare.c @ 668:0ee40175a307
Fix catv to display byte 255 correctly. (It's both M- and ^?.)
author | Rob Landley <rob@landley.net> |
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date | Sat, 06 Oct 2012 01:54:24 -0500 |
parents | 6df4ccc0acbe |
children | 786841fdb1e0 |
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/* vi: set sw=4 ts=4: * * unshare.c - run command in new context * * Copyright 2011 Rob Landley <rob@landley.net> USE_UNSHARE(NEWTOY(unshare, "<1^nium", TOYFLAG_USR|TOYFLAG_BIN)) config UNSHARE bool "unshare" default y depends on TOYBOX_CONTAINER help usage: unshare [-muin] COMMAND... Create new namespace(s) for this process and its children, so some attribute is not shared with the parent process. This is part of Linux Containers. Each process can have its own: -m Mount/unmount tree -u Host and domain names -i SysV IPC (message queues, semaphores, shared memory) -n Network address, sockets, routing, iptables */ #include "toys.h" #include <linux/sched.h> extern int unshare (int __flags); void unshare_main(void) { unsigned flags[]={CLONE_NEWNS, CLONE_NEWUTS, CLONE_NEWIPC, CLONE_NEWNET,0}; unsigned f=0; int i; for (i=0; flags[i]; i++) if (toys.optflags & (1<<i)) f |= flags[i]; if(unshare(f)) perror_exit("failed"); xexec(toys.optargs); }