From b82b34e06d0f8b91a1a30a847e0b1dd80ed0a046 Mon Sep 17 00:00:00 2001 From: Pascal Bellard Date: Mon, 7 Jun 2010 01:16:45 +0200 Subject: modprobe: add support for -l and -s. Remove some unsupported options Fixed some goofs in help text function old new delta modprobe_main 494 653 +159 packed_usage 27129 27145 +16 insmod_main 98 95 -3 Signed-off-by: Pascal Bellard Signed-off-by: Denys Vlasenko --- modutils/modprobe.c | 171 ++++++++++++++++++++++++++++++++++++++++++---------- 1 file changed, 140 insertions(+), 31 deletions(-) (limited to 'modutils/modprobe.c') diff --git a/modutils/modprobe.c b/modutils/modprobe.c index 69b9e4687..b4de65b1f 100644 --- a/modutils/modprobe.c +++ b/modutils/modprobe.c @@ -20,6 +20,104 @@ //#define DBG(fmt, ...) bb_error_msg("%s: " fmt, __func__, ## __VA_ARGS__) #define DBG(...) ((void)0) +//usage:#if !ENABLE_MODPROBE_SMALL +//usage:#define modprobe_notes_usage +//usage: "modprobe can (un)load a stack of modules, passing each module options (when\n" +//usage: "loading). modprobe uses a configuration file to determine what option(s) to\n" +//usage: "pass each module it loads.\n" +//usage: "\n" +//usage: "The configuration file is searched (in this order):\n" +//usage: "\n" +//usage: " /etc/modprobe.conf (2.6 only)\n" +//usage: " /etc/modules.conf\n" +//usage: " /etc/conf.modules (deprecated)\n" +//usage: "\n" +//usage: "They all have the same syntax (see below). If none is present, it is\n" +//usage: "_not_ an error; each loaded module is then expected to load without\n" +//usage: "options. Once a file is found, the others are tested for.\n" +//usage: "\n" +//usage: "/etc/modules.conf entry format:\n" +//usage: "\n" +//usage: " alias \n" +//usage: " Makes it possible to modprobe alias_name, when there is no such module.\n" +//usage: " It makes sense if your mod_name is long, or you want a more representative\n" +//usage: " name for that module (eg. 'scsi' in place of 'aha7xxx').\n" +//usage: " This makes it also possible to use a different set of options (below) for\n" +//usage: " the module and the alias.\n" +//usage: " A module can be aliased more than once.\n" +//usage: "\n" +//usage: " options \n" +//usage: " When loading module mod_name (or the module aliased by alias_name), pass\n" +//usage: " the \"symbol=value\" pairs as option to that module.\n" +//usage: "\n" +//usage: "Sample /etc/modules.conf file:\n" +//usage: "\n" +//usage: " options tulip irq=3\n" +//usage: " alias tulip tulip2\n" +//usage: " options tulip2 irq=4 io=0x308\n" +//usage: "\n" +//usage: "Other functionality offered by 'classic' modprobe is not available in\n" +//usage: "this implementation.\n" +//usage: "\n" +//usage: "If module options are present both in the config file, and on the command line,\n" +//usage: "then the options from the command line will be passed to the module _after_\n" +//usage: "the options from the config file. That way, you can have defaults in the config\n" +//usage: "file, and override them for a specific usage from the command line.\n" +//usage:#define modprobe_example_usage +//usage: "(with the above /etc/modules.conf):\n\n" +//usage: "$ modprobe tulip\n" +//usage: " will load the module 'tulip' with default option 'irq=3'\n\n" +//usage: "$ modprobe tulip irq=5\n" +//usage: " will load the module 'tulip' with option 'irq=5', thus overriding the default\n\n" +//usage: "$ modprobe tulip2\n" +//usage: " will load the module 'tulip' with default options 'irq=4 io=0x308',\n" +//usage: " which are the default for alias 'tulip2'\n\n" +//usage: "$ modprobe tulip2 irq=8\n" +//usage: " will load the module 'tulip' with default options 'irq=4 io=0x308 irq=8',\n" +//usage: " which are the default for alias 'tulip2' overridden by the option 'irq=8'\n\n" +//usage: " from the command line\n\n" +//usage: "$ modprobe tulip2 irq=2 io=0x210\n" +//usage: " will load the module 'tulip' with default options 'irq=4 io=0x308 irq=4 io=0x210',\n" +//usage: " which are the default for alias 'tulip2' overridden by the options 'irq=2 io=0x210'\n\n" +//usage: " from the command line\n" +//usage: +//usage:#define modprobe_trivial_usage +//usage: "[-alrqvs" +//usage: IF_FEATURE_MODPROBE_BLACKLIST("b") +//usage: "] MODULE [symbol=value]..." +//usage:#define modprobe_full_usage "\n\n" +//usage: "Options:" +//usage: "\n -a Load multiple MODULEs" +//usage: "\n -l List (MODULE is a pattern)" +//usage: "\n -r Remove MODULE (stacks) or do autoclean" +//usage: "\n -q Quiet" +//usage: "\n -v Verbose" +//usage: "\n -s Log to syslog" +//usage: IF_FEATURE_MODPROBE_BLACKLIST( +//usage: "\n -b Apply blacklist to module names too" +//usage: ) +//usage:#endif /* !ENABLE_MODPROBE_SMALL */ + +/* Note that usage text doesn't document various 2.4 options + * we pull in through INSMOD_OPTS define */ + +#define MODPROBE_COMPLEMENTARY "q-v:v-q:l--ar:a--lr:r--al" +#define MODPROBE_OPTS "alr" IF_FEATURE_MODPROBE_BLACKLIST("b") +//#define MODPROBE_COMPLEMENTARY "q-v:v-q:l--acr:a--lr:r--al" +//#define MODPROBE_OPTS "acd:lnrt:C:" IF_FEATURE_MODPROBE_BLACKLIST("b") +enum { + MODPROBE_OPT_INSERT_ALL = (INSMOD_OPT_UNUSED << 0), /* a */ + //MODPROBE_OPT_DUMP_ONLY= (INSMOD_OPT_UNUSED << x), /* c */ + //MODPROBE_OPT_DIRNAME = (INSMOD_OPT_UNUSED << x), /* d */ + MODPROBE_OPT_LIST_ONLY = (INSMOD_OPT_UNUSED << 1), /* l */ + //MODPROBE_OPT_SHOW_ONLY= (INSMOD_OPT_UNUSED << x), /* n */ + MODPROBE_OPT_REMOVE = (INSMOD_OPT_UNUSED << 2), /* r */ + //MODPROBE_OPT_RESTRICT = (INSMOD_OPT_UNUSED << x), /* t */ + //MODPROBE_OPT_VERONLY = (INSMOD_OPT_UNUSED << x), /* V */ + //MODPROBE_OPT_CONFIGFILE=(INSMOD_OPT_UNUSED << x), /* C */ + MODPROBE_OPT_BLACKLIST = (INSMOD_OPT_UNUSED << 3) * ENABLE_FEATURE_MODPROBE_BLACKLIST, +}; + #define MODULE_FLAG_LOADED 0x0001 #define MODULE_FLAG_NEED_DEPS 0x0002 /* "was seen in modules.dep": */ @@ -37,32 +135,6 @@ struct module_entry { /* I'll call it ME. */ llist_t *deps; /* strings. modules we depend on */ }; -/* NB: INSMOD_OPT_SILENT bit suppresses ONLY non-existent modules, - * not deleted ones (those are still listed in modules.dep). - * module-init-tools version 3.4: - * # modprobe bogus - * FATAL: Module bogus not found. [exitcode 1] - * # modprobe -q bogus [silent, exitcode still 1] - * but: - * # rm kernel/drivers/net/dummy.ko - * # modprobe -q dummy - * FATAL: Could not open '/lib/modules/xxx/kernel/drivers/net/dummy.ko': No such file or directory - * [exitcode 1] - */ -#define MODPROBE_OPTS "acdlnrt:VC:" IF_FEATURE_MODPROBE_BLACKLIST("b") -enum { - MODPROBE_OPT_INSERT_ALL = (INSMOD_OPT_UNUSED << 0), /* a */ - MODPROBE_OPT_DUMP_ONLY = (INSMOD_OPT_UNUSED << 1), /* c */ - MODPROBE_OPT_D = (INSMOD_OPT_UNUSED << 2), /* d */ - MODPROBE_OPT_LIST_ONLY = (INSMOD_OPT_UNUSED << 3), /* l */ - MODPROBE_OPT_SHOW_ONLY = (INSMOD_OPT_UNUSED << 4), /* n */ - MODPROBE_OPT_REMOVE = (INSMOD_OPT_UNUSED << 5), /* r */ - MODPROBE_OPT_RESTRICT = (INSMOD_OPT_UNUSED << 6), /* t */ - MODPROBE_OPT_VERONLY = (INSMOD_OPT_UNUSED << 7), /* V */ - MODPROBE_OPT_CONFIGFILE = (INSMOD_OPT_UNUSED << 8), /* C */ - MODPROBE_OPT_BLACKLIST = (INSMOD_OPT_UNUSED << 9) * ENABLE_FEATURE_MODPROBE_BLACKLIST, -}; - struct globals { llist_t *db; /* MEs of all modules ever seen (caching for speed) */ llist_t *probes; /* MEs of module(s) requested on cmdline */ @@ -264,6 +336,18 @@ static char *parse_and_add_kcmdline_module_options(char *options, const char *mo * -errno on open/read error, * errno on init_module() error */ +/* NB: INSMOD_OPT_SILENT bit suppresses ONLY non-existent modules, + * not deleted ones (those are still listed in modules.dep). + * module-init-tools version 3.4: + * # modprobe bogus + * FATAL: Module bogus not found. [exitcode 1] + * # modprobe -q bogus [silent, exitcode still 1] + * but: + * # rm kernel/drivers/net/dummy.ko + * # modprobe -q dummy + * FATAL: Could not open '/lib/modules/xxx/kernel/drivers/net/dummy.ko': No such file or directory + * [exitcode 1] + */ static int do_modprobe(struct module_entry *m) { struct module_entry *m2 = m2; /* for compiler */ @@ -395,13 +479,38 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv) unsigned opt; struct module_entry *me; - opt_complementary = "q-v:v-q"; - opt = getopt32(argv, INSMOD_OPTS MODPROBE_OPTS INSMOD_ARGS, NULL, NULL); + opt_complementary = MODPROBE_COMPLEMENTARY; + opt = getopt32(argv, INSMOD_OPTS MODPROBE_OPTS INSMOD_ARGS); argv += optind; - if (opt & (MODPROBE_OPT_DUMP_ONLY | MODPROBE_OPT_LIST_ONLY | - MODPROBE_OPT_SHOW_ONLY)) - bb_error_msg_and_die("not supported"); + if (opt & MODPROBE_OPT_LIST_ONLY) { + char name[MODULE_NAME_LEN]; + char *colon, *tokens[2]; + parser_t *p = config_open2(CONFIG_DEFAULT_DEPMOD_FILE, xfopen_for_read); + + while (config_read(p, tokens, 2, 1, "# \t", PARSE_NORMAL)) { + colon = last_char_is(tokens[0], ':'); + if (!colon) + continue; + *colon = '\0'; + filename2modname(tokens[0], name); + if (!argv[0]) + puts(tokens[0]); + else { + int i; + for (i = 0; argv[i]; i++) { + if (fnmatch(argv[i], name, 0) == 0) { + puts(tokens[0]); + } + } + } + } + return EXIT_SUCCESS; + } + + /* Yes, for some reason -l ignores -s... */ + if (opt & INSMOD_OPT_SYSLOG) + logmode = LOGMODE_SYSLOG; if (!argv[0]) { if (opt & MODPROBE_OPT_REMOVE) { -- cgit v1.2.3