Mercurial > hg > toybox
annotate toys/other/unshare.c @ 944:b4faf2ae39e8
This inlines CRC64, and nothing more.
The functions involved were called only once.
| author | Isaac Dunham <idunham@lavabit.com> |
|---|---|
| date | Sat, 06 Jul 2013 11:26:15 -0500 |
| parents | 786841fdb1e0 |
| children | 144d5ba7d410 |
| rev | line source |
|---|---|
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694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
656
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1 /* unshare.c - run command in new context |
| 398 | 2 * |
| 3 * Copyright 2011 Rob Landley <rob@landley.net> | |
| 4 | |
| 5 USE_UNSHARE(NEWTOY(unshare, "<1^nium", TOYFLAG_USR|TOYFLAG_BIN)) | |
| 6 | |
| 7 config UNSHARE | |
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Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
656
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8 bool "unshare" |
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Rob Landley <rob@landley.net>
parents:
656
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9 default y |
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Rob Landley <rob@landley.net>
parents:
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10 depends on TOYBOX_CONTAINER |
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786841fdb1e0
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Rob Landley <rob@landley.net>
parents:
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11 help |
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Rob Landley <rob@landley.net>
parents:
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12 usage: unshare [-muin] COMMAND... |
| 398 | 13 |
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parents:
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14 Create new namespace(s) for this process and its children, so some |
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786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
656
diff
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15 attribute is not shared with the parent process. This is part of |
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786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
656
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16 Linux Containers. Each process can have its own: |
| 398 | 17 |
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Rob Landley <rob@landley.net>
parents:
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18 -m Mount/unmount tree |
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19 -u Host and domain names |
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20 -i SysV IPC (message queues, semaphores, shared memory) |
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786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
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21 -n Network address, sockets, routing, iptables |
| 398 | 22 */ |
| 23 | |
| 24 #include "toys.h" | |
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Work around glibc regression by including Linux header directly.
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25 #include <linux/sched.h> |
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99cb6ad605ee
The linux header doesn't prototype unshare, and the glibc header introduced a regression in recent versions inexplicably crediting a linux feature to the FSF, so add the prototype ourselves.
Rob Landley <rob@landley.net>
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26 extern int unshare (int __flags); |
| 398 | 27 |
| 28 void unshare_main(void) | |
| 29 { | |
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Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
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30 unsigned flags[]={CLONE_NEWNS, CLONE_NEWUTS, CLONE_NEWIPC, CLONE_NEWNET, 0}; |
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Rob Landley <rob@landley.net>
parents:
656
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31 unsigned f=0; |
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786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
656
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32 int i; |
| 398 | 33 |
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786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
656
diff
changeset
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34 for (i=0; flags[i]; i++) if (toys.optflags & (1<<i)) f |= flags[i]; |
| 398 | 35 |
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Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
656
diff
changeset
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36 if(unshare(f)) perror_exit("failed"); |
| 398 | 37 |
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786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
656
diff
changeset
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38 xexec(toys.optargs); |
| 398 | 39 } |