mim: run scripts from a specification file

[oweals/busybox.git] / modutils / rmmod.c

diff --git a/modutils/rmmod.c b/modutils/rmmod.c
index 51390eb830a0090c98185eba6d26e91077ccb776..8d4639f50db78bb26ccf7d0ae748151aa66a88b9 100644 (file)
--- a/modutils/rmmod.c
+++ b/modutils/rmmod.c
@@ -7,8 +7,30 @@
  *
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
+//config:config RMMOD
+//config:      bool "rmmod (3.3 kb)"
+//config:      default y
+//config:      select PLATFORM_LINUX
+//config:      help
+//config:      rmmod is used to unload specified modules from the kernel.
 
-//applet:IF_RMMOD(APPLET(rmmod, _BB_DIR_SBIN, _BB_SUID_DROP))
+//applet:IF_RMMOD(IF_NOT_MODPROBE_SMALL(APPLET_NOEXEC(rmmod, rmmod, BB_DIR_SBIN, BB_SUID_DROP, rmmod)))
+
+//kbuild:ifneq ($(CONFIG_MODPROBE_SMALL),y)
+//kbuild:lib-$(CONFIG_RMMOD) += rmmod.o modutils.o
+//kbuild:endif
+
+//usage:#if !ENABLE_MODPROBE_SMALL
+//usage:#define rmmod_trivial_usage
+//usage:       "[-wfa] [MODULE]..."
+//usage:#define rmmod_full_usage "\n\n"
+//usage:       "Unload kernel modules\n"
+//usage:     "\n       -w      Wait until the module is no longer used"
+//usage:     "\n       -f      Force unload"
+//usage:     "\n       -a      Remove all unused modules (recursively)"
+//usage:#define rmmod_example_usage
+//usage:       "$ rmmod tulip\n"
+//usage:#endif
 
 #include "libbb.h"
 #include "modutils.h"
@@ -16,20 +38,21 @@
 int rmmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int rmmod_main(int argc UNUSED_PARAM, char **argv)
 {
-       int n;
+       int n, err;
        unsigned flags = O_NONBLOCK | O_EXCL;
 
        /* Parse command line. */
        n = getopt32(argv, "wfas"); // -s ignored
        argv += optind;
-       if (n & 1)      // --wait
+       if (n & 1)  // --wait
                flags &= ~O_NONBLOCK;
-       if (n & 2)      // --force
+       if (n & 2)  // --force
                flags |= O_TRUNC;
        if (n & 4) {
                /* Unload _all_ unused modules via NULL delete_module() call */
-               if (bb_delete_module(NULL, flags) != 0 && errno != EFAULT)
-                       bb_perror_msg_and_die("rmmod");
+               err = bb_delete_module(NULL, flags);
+               if (err && err != EFAULT)
+                       bb_simple_perror_msg_and_die("rmmod");
                return EXIT_SUCCESS;
        }
 
@@ -46,9 +69,10 @@ int rmmod_main(int argc UNUSED_PARAM, char **argv)
                        safe_strncpy(modname, bname, MODULE_NAME_LEN);
                else
                        filename2modname(bname, modname);
-               if (bb_delete_module(modname, flags))
-                       bb_error_msg_and_die("can't unload '%s': %s",
-                                            modname, moderror(errno));
+               err = bb_delete_module(modname, flags);
+               if (err)
+                       bb_perror_msg_and_die("can't unload module '%s'",
+                                       modname);
        }
 
        return EXIT_SUCCESS;