1*cf5a6c84SAndroid Build Coastguard Worker /* rmmod.c - Remove a module from the Linux kernel.
2*cf5a6c84SAndroid Build Coastguard Worker *
3*cf5a6c84SAndroid Build Coastguard Worker * Copyright 2012 Elie De Brauwer <[email protected]>
4*cf5a6c84SAndroid Build Coastguard Worker
5*cf5a6c84SAndroid Build Coastguard Worker USE_RMMOD(NEWTOY(rmmod, "<1wf", TOYFLAG_SBIN|TOYFLAG_NEEDROOT))
6*cf5a6c84SAndroid Build Coastguard Worker
7*cf5a6c84SAndroid Build Coastguard Worker config RMMOD
8*cf5a6c84SAndroid Build Coastguard Worker bool "rmmod"
9*cf5a6c84SAndroid Build Coastguard Worker default y
10*cf5a6c84SAndroid Build Coastguard Worker help
11*cf5a6c84SAndroid Build Coastguard Worker usage: rmmod [-wf] MODULE...
12*cf5a6c84SAndroid Build Coastguard Worker
13*cf5a6c84SAndroid Build Coastguard Worker Unload the given kernel modules.
14*cf5a6c84SAndroid Build Coastguard Worker
15*cf5a6c84SAndroid Build Coastguard Worker -f Force unload of a module
16*cf5a6c84SAndroid Build Coastguard Worker -w Wait until the module is no longer used
17*cf5a6c84SAndroid Build Coastguard Worker */
18*cf5a6c84SAndroid Build Coastguard Worker
19*cf5a6c84SAndroid Build Coastguard Worker #define FOR_rmmod
20*cf5a6c84SAndroid Build Coastguard Worker #include "toys.h"
21*cf5a6c84SAndroid Build Coastguard Worker
22*cf5a6c84SAndroid Build Coastguard Worker #define delete_module(mod, flags) syscall(__NR_delete_module, mod, flags)
23*cf5a6c84SAndroid Build Coastguard Worker
rmmod_main(void)24*cf5a6c84SAndroid Build Coastguard Worker void rmmod_main(void)
25*cf5a6c84SAndroid Build Coastguard Worker {
26*cf5a6c84SAndroid Build Coastguard Worker char **args, *module, *s;
27*cf5a6c84SAndroid Build Coastguard Worker unsigned flags;
28*cf5a6c84SAndroid Build Coastguard Worker
29*cf5a6c84SAndroid Build Coastguard Worker for (args = toys.optargs; *args; args++) {
30*cf5a6c84SAndroid Build Coastguard Worker module = basename(*args);
31*cf5a6c84SAndroid Build Coastguard Worker // Remove .ko if present
32*cf5a6c84SAndroid Build Coastguard Worker if ((s = strend(module, ".ko"))) *s = 0;
33*cf5a6c84SAndroid Build Coastguard Worker
34*cf5a6c84SAndroid Build Coastguard Worker flags = O_NONBLOCK;
35*cf5a6c84SAndroid Build Coastguard Worker if (FLAG(f)) flags |= O_TRUNC;
36*cf5a6c84SAndroid Build Coastguard Worker if (FLAG(w)) flags &= ~O_NONBLOCK;
37*cf5a6c84SAndroid Build Coastguard Worker if (delete_module(module, flags)) perror_msg("failed to unload %s", module);
38*cf5a6c84SAndroid Build Coastguard Worker }
39*cf5a6c84SAndroid Build Coastguard Worker }
40