Mercurial > hg > toybox
view toys/other/rmmod.c @ 955:144d5ba7d410
Replace users of xexec(toys.optargs) with xexec_optargs(0) to avoid free/reuse bug during argument parsing.
author | Rob Landley <rob@landley.net> |
---|---|
date | Thu, 18 Jul 2013 18:20:03 -0500 |
parents | 3d7526f6115b |
children | 57f2a26fa92c |
line wrap: on
line source
/* rmmod.c - Remove a module from the Linux kernel. * * Copyright 2012 Elie De Brauwer <eliedebrauwer@gmail.com> USE_RMMOD(NEWTOY(rmmod, "<1wf", TOYFLAG_BIN|TOYFLAG_NEEDROOT)) config RMMOD bool "rmmod" default y help usage: rmmod [-wf] [MODULE] Unload the module named MODULE from the Linux kernel. -f Force unload of a module -w Wait until the module is no longer used. */ #define FOR_rmmod #include "toys.h" #include <sys/syscall.h> #define delete_module(mod, flags) syscall(__NR_delete_module, mod, flags) void rmmod_main(void) { unsigned int flags = O_NONBLOCK|O_EXCL; char * mod_name; int len; // Basename mod_name = basename(*toys.optargs); // Remove .ko if present len = strlen(mod_name); if (len > 3 && !strcmp(&mod_name[len-3], ".ko" )) mod_name[len-3] = 0; if (toys.optflags & FLAG_f) flags |= O_TRUNC; if (toys.optflags & FLAG_w) flags &= ~O_NONBLOCK; if (delete_module(mod_name, flags)) perror_exit("failed to unload %s", mod_name); }