wok annotate busybox/stuff/busybox-1.12.0-modinfo.u @ rev 1637

busybox: fix modinfo
author Pascal Bellard <pascal.bellard@slitaz.org>
date Fri Oct 24 21:24:55 2008 +0000 (2008-10-24)
parents 8a7fbe920ac6
children 22791a4ca944
rev   line source
pascal@1299 1 --- busybox-1.12.0/include/applets.h
pascal@1299 2 +++ busybox-1.12.0/include/applets.h
pascal@1299 3 @@ -251,6 +251,7 @@ USE_MKFS_MINIX(APPLET_ODDNAME(mkfs.minix
pascal@1299 4 USE_MKNOD(APPLET(mknod, _BB_DIR_BIN, _BB_SUID_NEVER))
pascal@1299 5 USE_MKSWAP(APPLET(mkswap, _BB_DIR_SBIN, _BB_SUID_NEVER))
pascal@1299 6 USE_MKTEMP(APPLET(mktemp, _BB_DIR_BIN, _BB_SUID_NEVER))
pascal@1299 7 +USE_MODINFO(APPLET(modinfo, _BB_DIR_SBIN, _BB_SUID_NEVER))
pascal@1299 8 USE_MODPROBE(APPLET(modprobe, _BB_DIR_SBIN, _BB_SUID_NEVER))
pascal@1299 9 USE_MODPROBE_SMALL(APPLET(modprobe, _BB_DIR_SBIN, _BB_SUID_NEVER))
pascal@1299 10 USE_MORE(APPLET(more, _BB_DIR_BIN, _BB_SUID_NEVER))
pascal@1299 11
pascal@1299 12 --- busybox-1.12.0/include/usage.h
pascal@1299 13 +++ busybox-1.12.0/include/usage.h
pascal@1299 14 @@ -2629,6 +2629,20 @@
pascal@1299 15 " which are the default for alias 'tulip2' overridden by the options 'irq=2 io=0x210'\n\n" \
pascal@1299 16 " from the command line\n"
pascal@1299 17
pascal@1299 18 +#define modinfo_trivial_usage \
pascal@1299 19 + "[-adlp0] [-F keyword] MODULE"
pascal@1299 20 +#define modinfo_full_usage "\n\n" \
pascal@1299 21 + "Options:" \
pascal@1299 22 + "\n -a Shortcut for '-F author'" \
pascal@1299 23 + "\n -d Shortcut for '-F description'" \
pascal@1299 24 + "\n -l Shortcut for '-F license'" \
pascal@1299 25 + "\n -p Shortcut for '-F parm'" \
pascal@1299 26 + "\n -F keyword Keyword to look for" \
pascal@1299 27 + "\n -0 Use \\0 string separator. Not \\n" \
pascal@1299 28 +
pascal@1299 29 +#define modinfo_example_usage \
pascal@1299 30 + "$ modinfo -F vermagic loop\n"
pascal@1299 31 +
pascal@1299 32 #define more_trivial_usage \
pascal@1299 33 "[FILE...]"
pascal@1299 34 #define more_full_usage "\n\n" \
pascal@1299 35
pascal@1299 36 --- busybox-1.12.0/modutils/Config.in
pascal@1299 37 +++ busybox-1.12.0/modutils/Config.in
pascal@1299 38 @@ -213,6 +213,12 @@ config FEATURE_MODPROBE_BLACKLIST
pascal@1299 39 hardware autodetection scripts to load modules like evdev, frame
pascal@1299 40 buffer drivers etc.
pascal@1299 41
pascal@1299 42 +config MODINFO
pascal@1299 43 + bool "modinfo"
pascal@1299 44 + default n
pascal@1299 45 + help
pascal@1299 46 + Show information about a Linux Kernel module
pascal@1299 47 +
pascal@1299 48 comment "Options common to multiple modutils"
pascal@1299 49 depends on INSMOD || RMMOD || MODPROBE || LSMOD || DEPMOD
pascal@1299 50
pascal@1299 51
pascal@1299 52 --- busybox-1.12.0/modutils/Kbuild
pascal@1299 53 +++ busybox-1.12.0/modutils/Kbuild
pascal@1299 54 @@ -11,3 +11,4 @@ lib-$(CONFIG_LSMOD) += lsmod
pascal@1299 55 lib-$(CONFIG_MODPROBE) += modprobe.o
pascal@1299 56 lib-$(CONFIG_MODPROBE_SMALL) += modprobe-small.o
pascal@1299 57 lib-$(CONFIG_RMMOD) += rmmod.o
pascal@1299 58 +lib-$(CONFIG_MODINFO) += modinfo.o
pascal@1299 59
pascal@1299 60 --- busybox-1.12.0/modutils/modinfo.c
pascal@1299 61 +++ busybox-1.12.0/modutils/modinfo.c
pascal@1637 62 @@ -0,0 +1,82 @@
pascal@1299 63 +/* vi: set sw=4 ts=4: */
pascal@1299 64 +/*
pascal@1299 65 + * modinfo - retrieve module info
pascal@1299 66 + * Copyright (c) 2008 Pascal Bellard
pascal@1299 67 + *
pascal@1299 68 + * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
pascal@1299 69 + */
pascal@1299 70 +
pascal@1299 71 +#undef _GNU_SOURCE
pascal@1299 72 +#define _GNU_SOURCE
pascal@1299 73 +#include <libbb.h>
pascal@1637 74 +#include <fnmatch.h>
pascal@1637 75 +
pascal@1637 76 +enum {
pascal@1637 77 + ARG_F = (1<<4), /* field name */
pascal@1637 78 + ARG_0 = (1<<5) /* \0 as separator */
pascal@1637 79 +};
pascal@1637 80 +
pascal@1637 81 +struct modinfo_env {
pascal@1637 82 + char **argv;
pascal@1637 83 + char *field;
pascal@1637 84 +};
pascal@1637 85 +
pascal@1637 86 +static void modinfo(char *name, char *path, void *env)
pascal@1637 87 +{
pascal@1637 88 + size_t len;
pascal@1637 89 + int i, length;
pascal@1637 90 + char *ptr, *the_module;
pascal@1637 91 + char **argv = ((struct modinfo_env *) env)->argv;
pascal@1637 92 + char *field = ((struct modinfo_env *) env)->field;
pascal@1637 93 + extern void *xalloc_load_module(const char filename[], size_t *len);
pascal@1637 94 +
pascal@1637 95 + for (i = 0; argv[i]; i++) {
pascal@1637 96 + if (fnmatch(argv[i],name,0) == 0) {
pascal@1637 97 + len = MAXINT(ssize_t);
pascal@1637 98 + ptr = the_module = xalloc_load_module(path, &len);
pascal@1637 99 + length = strlen(field);
pascal@1637 100 + do {
pascal@1637 101 + ptr = memchr(ptr, *field, len - (ptr - (char*)the_module));
pascal@1637 102 + if (ptr == NULL) /* no occurance left, done */
pascal@1637 103 + break;
pascal@1637 104 + if (!strncmp(ptr, field, length) && ptr[length] == '=') {
pascal@1637 105 + ptr += length + 1;
pascal@1637 106 + ptr += printf("%s%c",ptr,
pascal@1637 107 + (option_mask32 & ARG_0) ? '\0' : '\n');
pascal@1637 108 + }
pascal@1637 109 + ++ptr;
pascal@1637 110 + } while (1);
pascal@1637 111 + free(the_module);
pascal@1637 112 + break;
pascal@1637 113 + }
pascal@1637 114 + }
pascal@1637 115 +}
pascal@1299 116 +
pascal@1299 117 +int modinfo_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
pascal@1299 118 +int modinfo_main(int argc UNUSED_PARAM, char **argv)
pascal@1299 119 +{
pascal@1299 120 + static const char *shortcuts[] = {
pascal@1299 121 + "author",
pascal@1299 122 + "description",
pascal@1299 123 + "license",
pascal@1299 124 + "parm"
pascal@1299 125 + };
pascal@1637 126 + int i;
pascal@1637 127 + struct modinfo_env env;
pascal@1637 128 + extern void mod_walk(void (*action)(char *name, char *path, void *env),
pascal@1637 129 + void *data);
pascal@1299 130 +
pascal@1637 131 + env.field = NULL;
pascal@1637 132 + getopt32(argv, "adlpF:0", &env.field);
pascal@1637 133 + env.argv = argv += optind;
pascal@1299 134 +
pascal@1299 135 + for (i = 0; i < sizeof(shortcuts)/sizeof(shortcuts[0]); i++)
pascal@1299 136 + if (option_mask32 & (1 << i))
pascal@1637 137 + env.field = (char *) shortcuts[i];
pascal@1299 138 +
pascal@1637 139 + if (!env.field || !*env.argv)
pascal@1299 140 + bb_show_usage();
pascal@1299 141 +
pascal@1637 142 + mod_walk(modinfo, &env);
pascal@1299 143 + return 0;
pascal@1299 144 +}