Mercurial > hg > toybox
view toys/other/rmmod.c @ 674:7e846e281e38
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.
author | Rob Landley <rob@landley.net> |
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date | Mon, 08 Oct 2012 00:02:30 -0500 |
parents | 6df4ccc0acbe |
children | 786841fdb1e0 |
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/* vi: set sw=4 ts=4: * * 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 = strrchr(toys.optargs[0],'/'); if (mod_name) mod_name++; else mod_name = toys.optargs[0]; // 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); }