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annotate toys/other/rmmod.c @ 1727:c0ef9b7976f0 draft

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Use xsignal() instead of signal().
author Rob Landley <rob@landley.net>
date Tue, 10 Mar 2015 11:07:28 -0500
parents 3d7526f6115b
children 57f2a26fa92c
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1 /* rmmod.c - Remove a module from the Linux kernel.
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2 *
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3 * Copyright 2012 Elie De Brauwer <eliedebrauwer@gmail.com>
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4
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5 USE_RMMOD(NEWTOY(rmmod, "<1wf", TOYFLAG_BIN|TOYFLAG_NEEDROOT))
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7 config RMMOD
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8 bool "rmmod"
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9 default y
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10 help
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11 usage: rmmod [-wf] [MODULE]
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13 Unload the module named MODULE from the Linux kernel.
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14 -f Force unload of a module
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15 -w Wait until the module is no longer used.
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17 */
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7e846e281e38 New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate.
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19 #define FOR_rmmod
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20 #include "toys.h"
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22 #include <sys/syscall.h>
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23 #define delete_module(mod, flags) syscall(__NR_delete_module, mod, flags)
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25 void rmmod_main(void)
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26 {
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27 unsigned int flags = O_NONBLOCK|O_EXCL;
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28 char * mod_name;
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29 int len;
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31 // Basename
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32 mod_name = basename(*toys.optargs);
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34 // Remove .ko if present
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35 len = strlen(mod_name);
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36 if (len > 3 && !strcmp(&mod_name[len-3], ".ko" )) mod_name[len-3] = 0;
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38 if (toys.optflags & FLAG_f) flags |= O_TRUNC;
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39 if (toys.optflags & FLAG_w) flags &= ~O_NONBLOCK;
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41 if (delete_module(mod_name, flags))
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42 perror_exit("failed to unload %s", mod_name);
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43 }