| /* vi: set sw=4 ts=4: */ |
| /* |
| * Modprobe written from scratch for BusyBox |
| * |
| * Copyright (c) 2008 Timo Teras <timo.teras@iki.fi> |
| * Copyright (c) 2008 Vladimir Dronnikov |
| * |
| * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
| */ |
| //config:config MODPROBE |
| //config: bool "modprobe (29 kb)" |
| //config: default y |
| //config: select PLATFORM_LINUX |
| //config: help |
| //config: Handle the loading of modules, and their dependencies on a high |
| //config: level. |
| //config: |
| //config:config FEATURE_MODPROBE_BLACKLIST |
| //config: bool "Blacklist support" |
| //config: default y |
| //config: depends on MODPROBE && !MODPROBE_SMALL |
| //config: help |
| //config: Say 'y' here to enable support for the 'blacklist' command in |
| //config: modprobe.conf. This prevents the alias resolver to resolve |
| //config: blacklisted modules. This is useful if you want to prevent your |
| //config: hardware autodetection scripts to load modules like evdev, frame |
| //config: buffer drivers etc. |
| |
| //applet:IF_MODPROBE(IF_NOT_MODPROBE_SMALL(APPLET(modprobe, BB_DIR_SBIN, BB_SUID_DROP))) |
| |
| //kbuild:ifneq ($(CONFIG_MODPROBE_SMALL),y) |
| //kbuild:lib-$(CONFIG_MODPROBE) += modprobe.o modutils.o |
| //kbuild:endif |
| |
| #include "libbb.h" |
| #include "modutils.h" |
| #include <sys/utsname.h> |
| #include <fnmatch.h> |
| |
| #if 1 |
| #define DBG(...) ((void)0) |
| #else |
| #define DBG(fmt, ...) bb_error_msg("%s: " fmt, __func__, ## __VA_ARGS__) |
| #endif |
| |
| /* Note that unlike older versions of modules.dep/depmod (busybox and m-i-t), |
| * we expect the full dependency list to be specified in modules.dep. |
| * Older versions would only export the direct dependency list. |
| */ |
| |
| |
| //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 <alias_name> <mod_name>\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 <mod_name|alias_name> <symbol=value...>\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: "[-alrqvsD" IF_FEATURE_MODPROBE_BLACKLIST("b") "]" |
| //usage: " MODULE" IF_FEATURE_CMDLINE_MODULE_OPTIONS(" [SYMBOL=VALUE]...") |
| //usage:#define modprobe_full_usage "\n\n" |
| //usage: " -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: "\n -D Show dependencies" |
| //usage: IF_FEATURE_MODPROBE_BLACKLIST( |
| //usage: "\n -b Apply blacklist to module names too" |
| //usage: ) |
| //usage:#endif /* !ENABLE_MODPROBE_SMALL */ |
| |
| /* Note: usage text doesn't document various 2.4 options |
| * we pull in through INSMOD_OPTS define |
| * Note2: -b is always accepted, but if !FEATURE_MODPROBE_BLACKLIST, |
| * it is a no-op. |
| */ |
| #define MODPROBE_OPTS "alrDb" |
| /* -a and -D _are_ in fact compatible */ |
| #define MODPROBE_COMPLEMENTARY ("q-v:v-q:l--arD:r--alD:a--lr:D--rl") |
| //#define MODPROBE_OPTS "acd:lnrt:C:b" |
| //#define MODPROBE_COMPLEMENTARY "q-v:v-q:l--acr:a--lr:r--al" |
| enum { |
| OPT_INSERT_ALL = (INSMOD_OPT_UNUSED << 0), /* a */ |
| //OPT_DUMP_ONLY = (INSMOD_OPT_UNUSED << x), /* c */ |
| //OPT_DIRNAME = (INSMOD_OPT_UNUSED << x), /* d */ |
| OPT_LIST_ONLY = (INSMOD_OPT_UNUSED << 1), /* l */ |
| //OPT_SHOW_ONLY = (INSMOD_OPT_UNUSED << x), /* n */ |
| OPT_REMOVE = (INSMOD_OPT_UNUSED << 2), /* r */ |
| //OPT_RESTRICT = (INSMOD_OPT_UNUSED << x), /* t */ |
| //OPT_VERONLY = (INSMOD_OPT_UNUSED << x), /* V */ |
| //OPT_CONFIGFILE = (INSMOD_OPT_UNUSED << x), /* C */ |
| OPT_SHOW_DEPS = (INSMOD_OPT_UNUSED << 3), /* D */ |
| OPT_BLACKLIST = (INSMOD_OPT_UNUSED << 4) * ENABLE_FEATURE_MODPROBE_BLACKLIST, |
| }; |
| #if ENABLE_LONG_OPTS |
| static const char modprobe_longopts[] ALIGN1 = |
| /* nobody asked for long opts (yet) */ |
| // "all\0" No_argument "a" |
| // "list\0" No_argument "l" |
| // "remove\0" No_argument "r" |
| // "quiet\0" No_argument "q" |
| // "verbose\0" No_argument "v" |
| // "syslog\0" No_argument "s" |
| /* module-init-tools 3.11.1 has only long opt --show-depends |
| * but no short -D, we provide long opt for scripts which |
| * were written for 3.11.1: */ |
| "show-depends\0" No_argument "D" |
| // "use-blacklist\0" No_argument "b" |
| ; |
| #endif |
| |
| #define MODULE_FLAG_LOADED 0x0001 |
| #define MODULE_FLAG_NEED_DEPS 0x0002 |
| /* "was seen in modules.dep": */ |
| #define MODULE_FLAG_FOUND_IN_MODDEP 0x0004 |
| #define MODULE_FLAG_BLACKLISTED 0x0008 |
| #define MODULE_FLAG_BUILTIN 0x0010 |
| |
| struct globals { |
| llist_t *probes; /* MEs of module(s) requested on cmdline */ |
| #if ENABLE_FEATURE_CMDLINE_MODULE_OPTIONS |
| char *cmdline_mopts; /* module options from cmdline */ |
| #endif |
| int num_unresolved_deps; |
| /* bool. "Did we have 'symbol:FOO' requested on cmdline?" */ |
| smallint need_symbols; |
| struct utsname uts; |
| module_db db; |
| } FIX_ALIASING; |
| #define G (*ptr_to_globals) |
| #define INIT_G() do { \ |
| SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ |
| } while (0) |
| |
| |
| static int read_config(const char *path); |
| |
| static char *gather_options_str(char *opts, const char *append) |
| { |
| /* Speed-optimized. We call gather_options_str many times. */ |
| if (append) { |
| if (opts == NULL) { |
| opts = xstrdup(append); |
| } else { |
| int optlen = strlen(opts); |
| opts = xrealloc(opts, optlen + strlen(append) + 2); |
| sprintf(opts + optlen, " %s", append); |
| } |
| } |
| return opts; |
| } |
| |
| static struct module_entry *get_or_add_modentry(const char *module) |
| { |
| return moddb_get_or_create(&G.db, module); |
| } |
| |
| static void add_probe(const char *name) |
| { |
| struct module_entry *m; |
| |
| m = get_or_add_modentry(name); |
| if (!(option_mask32 & (OPT_REMOVE | OPT_SHOW_DEPS)) |
| && (m->flags & (MODULE_FLAG_LOADED | MODULE_FLAG_BUILTIN)) |
| ) { |
| DBG("skipping %s, it is already loaded", name); |
| return; |
| } |
| |
| DBG("queuing %s", name); |
| m->probed_name = name; |
| m->flags |= MODULE_FLAG_NEED_DEPS; |
| llist_add_to_end(&G.probes, m); |
| G.num_unresolved_deps++; |
| if (ENABLE_FEATURE_MODUTILS_SYMBOLS |
| && is_prefixed_with(m->modname, "symbol:") |
| ) { |
| G.need_symbols = 1; |
| } |
| } |
| |
| static int FAST_FUNC config_file_action(const char *filename, |
| struct stat *statbuf UNUSED_PARAM, |
| void *userdata UNUSED_PARAM, |
| int depth) |
| { |
| char *tokens[3]; |
| parser_t *p; |
| struct module_entry *m; |
| int rc = TRUE; |
| const char *base, *ext; |
| |
| /* Skip files that begin with a "." */ |
| base = bb_basename(filename); |
| if (base[0] == '.') |
| goto error; |
| |
| /* "man modprobe.d" from kmod version 22 suggests |
| * that we shouldn't recurse into /etc/modprobe.d/dir/ |
| * _subdirectories_: |
| */ |
| if (depth > 1) |
| return SKIP; /* stop recursing */ |
| //TODO: instead, can use dirAction in recursive_action() to SKIP dirs |
| //on depth == 1 level. But that's more code... |
| |
| /* In dir recursion, skip files that do not end with a ".conf" |
| * depth==0: read_config("modules.{symbols,alias}") must work, |
| * "include FILE_NOT_ENDING_IN_CONF" must work too. |
| */ |
| if (depth != 0) { |
| ext = strrchr(base, '.'); |
| if (ext == NULL || strcmp(ext + 1, "conf")) |
| goto error; |
| } |
| |
| p = config_open2(filename, fopen_for_read); |
| if (p == NULL) { |
| rc = FALSE; |
| goto error; |
| } |
| |
| while (config_read(p, tokens, 3, 2, "# \t", PARSE_NORMAL)) { |
| //Use index_in_strings? |
| if (strcmp(tokens[0], "alias") == 0) { |
| /* alias <wildcard> <modulename> */ |
| llist_t *l; |
| char wildcard[MODULE_NAME_LEN]; |
| char *rmod; |
| |
| if (tokens[2] == NULL) |
| continue; |
| filename2modname(tokens[1], wildcard); |
| |
| for (l = G.probes; l; l = l->link) { |
| m = (struct module_entry *) l->data; |
| if (fnmatch(wildcard, m->modname, 0) != 0) |
| continue; |
| rmod = filename2modname(tokens[2], NULL); |
| llist_add_to(&m->realnames, rmod); |
| |
| if (m->flags & MODULE_FLAG_NEED_DEPS) { |
| m->flags &= ~MODULE_FLAG_NEED_DEPS; |
| G.num_unresolved_deps--; |
| } |
| |
| m = get_or_add_modentry(rmod); |
| if (!(m->flags & MODULE_FLAG_NEED_DEPS)) { |
| m->flags |= MODULE_FLAG_NEED_DEPS; |
| G.num_unresolved_deps++; |
| } |
| } |
| } else if (strcmp(tokens[0], "options") == 0) { |
| /* options <modulename> <option...> */ |
| if (tokens[2] == NULL) |
| continue; |
| m = get_or_add_modentry(tokens[1]); |
| m->options = gather_options_str(m->options, tokens[2]); |
| } else if (strcmp(tokens[0], "include") == 0) { |
| /* include <filename>/<dirname> (yes, directories also must work) */ |
| read_config(tokens[1]); |
| } else if (ENABLE_FEATURE_MODPROBE_BLACKLIST |
| && strcmp(tokens[0], "blacklist") == 0 |
| ) { |
| /* blacklist <modulename> */ |
| get_or_add_modentry(tokens[1])->flags |= MODULE_FLAG_BLACKLISTED; |
| } |
| } |
| config_close(p); |
| error: |
| return rc; |
| } |
| |
| static int read_config(const char *path) |
| { |
| return recursive_action(path, ACTION_RECURSE | ACTION_QUIET, |
| config_file_action, NULL, NULL, |
| /*depth:*/ 0); |
| } |
| |
| static const char *humanly_readable_name(struct module_entry *m) |
| { |
| /* probed_name may be NULL. modname always exists. */ |
| return m->probed_name ? m->probed_name : m->modname; |
| } |
| |
| /* Like strsep(&stringp, "\n\t ") but quoted text goes to single token |
| * even if it contains whitespace. |
| */ |
| static char *strsep_quotes(char **stringp) |
| { |
| char *s, *start = *stringp; |
| |
| if (!start) |
| return NULL; |
| |
| for (s = start; ; s++) { |
| switch (*s) { |
| case '"': |
| s = strchrnul(s + 1, '"'); /* find trailing quote */ |
| if (*s != '\0') |
| s++; /* skip trailing quote */ |
| /* fall through */ |
| case '\0': |
| case '\n': |
| case '\t': |
| case ' ': |
| if (*s != '\0') { |
| *s = '\0'; |
| *stringp = s + 1; |
| } else { |
| *stringp = NULL; |
| } |
| return start; |
| } |
| } |
| } |
| |
| static char *parse_and_add_kcmdline_module_options(char *options, const char *modulename) |
| { |
| char *kcmdline_buf; |
| char *kcmdline; |
| char *kptr; |
| |
| kcmdline_buf = xmalloc_open_read_close("/proc/cmdline", NULL); |
| if (!kcmdline_buf) |
| return options; |
| |
| kcmdline = kcmdline_buf; |
| while ((kptr = strsep_quotes(&kcmdline)) != NULL) { |
| char *after_modulename = is_prefixed_with(kptr, modulename); |
| if (!after_modulename || *after_modulename != '.') |
| continue; |
| /* It is "modulename.xxxx" */ |
| kptr = after_modulename + 1; |
| if (strchr(kptr, '=') != NULL) { |
| /* It is "modulename.opt=[val]" */ |
| options = gather_options_str(options, kptr); |
| } |
| } |
| free(kcmdline_buf); |
| |
| return options; |
| } |
| |
| /* Return: similar to bb_init_module: |
| * 0 on success, |
| * -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) |
| { |
| int rc, first; |
| |
| if (!(m->flags & MODULE_FLAG_FOUND_IN_MODDEP)) { |
| if (!(option_mask32 & INSMOD_OPT_SILENT)) |
| bb_error_msg((m->flags & MODULE_FLAG_BUILTIN) ? |
| "module %s is builtin" : |
| "module %s not found in modules.dep", |
| humanly_readable_name(m)); |
| return -ENOENT; |
| } |
| DBG("do_modprob'ing %s", m->modname); |
| |
| if (!(option_mask32 & OPT_REMOVE)) |
| m->deps = llist_rev(m->deps); |
| |
| if (0) { |
| llist_t *l; |
| for (l = m->deps; l; l = l->link) |
| DBG("dep: %s", l->data); |
| } |
| |
| first = 1; |
| rc = 0; |
| while (m->deps) { |
| struct module_entry *m2; |
| char *fn, *options; |
| |
| rc = 0; |
| fn = llist_pop(&m->deps); /* we leak it */ |
| m2 = get_or_add_modentry(bb_get_last_path_component_nostrip(fn)); |
| |
| if (option_mask32 & OPT_REMOVE) { |
| /* modprobe -r */ |
| if (m2->flags & MODULE_FLAG_LOADED) { |
| rc = bb_delete_module(m2->modname, O_EXCL); |
| if (rc) { |
| if (first) { |
| bb_perror_msg("can't unload module '%s'", |
| humanly_readable_name(m2)); |
| break; |
| } |
| } else { |
| m2->flags &= ~MODULE_FLAG_LOADED; |
| } |
| } |
| /* do not error out if *deps* fail to unload */ |
| first = 0; |
| continue; |
| } |
| |
| options = m2->options; |
| m2->options = NULL; |
| options = parse_and_add_kcmdline_module_options(options, m2->modname); |
| #if ENABLE_FEATURE_CMDLINE_MODULE_OPTIONS |
| if (m == m2) |
| options = gather_options_str(options, G.cmdline_mopts); |
| #endif |
| |
| if (option_mask32 & OPT_SHOW_DEPS) { |
| printf(options ? "insmod %s/%s/%s %s\n" |
| : "insmod %s/%s/%s\n", |
| CONFIG_DEFAULT_MODULES_DIR, G.uts.release, fn, |
| options); |
| free(options); |
| continue; |
| } |
| |
| if (m2->flags & MODULE_FLAG_LOADED) { |
| DBG("%s is already loaded, skipping", fn); |
| free(options); |
| continue; |
| } |
| |
| rc = bb_init_module(fn, options); |
| DBG("loaded %s '%s', rc:%d", fn, options, rc); |
| if (rc == EEXIST) |
| rc = 0; |
| free(options); |
| if (rc) { |
| bb_error_msg("can't load module %s (%s): %s", |
| humanly_readable_name(m2), |
| fn, |
| moderror(rc) |
| ); |
| break; |
| } |
| m2->flags |= MODULE_FLAG_LOADED; |
| } |
| |
| return rc; |
| } |
| |
| static void load_modules_dep(void) |
| { |
| struct module_entry *m; |
| char *colon, *tokens[2]; |
| parser_t *p; |
| |
| /* Modprobe does not work at all without modules.dep, |
| * even if the full module name is given. Returning error here |
| * was making us later confuse user with this message: |
| * "module /full/path/to/existing/file/module.ko not found". |
| * It's better to die immediately, with good message. |
| * xfopen_for_read provides that. */ |
| p = config_open2(CONFIG_DEFAULT_DEPMOD_FILE, xfopen_for_read); |
| |
| while (G.num_unresolved_deps |
| && config_read(p, tokens, 2, 1, "# \t", PARSE_NORMAL) |
| ) { |
| colon = last_char_is(tokens[0], ':'); |
| if (colon == NULL) |
| continue; |
| *colon = '\0'; |
| |
| m = moddb_get(&G.db, bb_get_last_path_component_nostrip(tokens[0])); |
| if (m == NULL) |
| continue; |
| |
| /* Optimization... */ |
| if ((m->flags & MODULE_FLAG_LOADED) |
| && !(option_mask32 & (OPT_REMOVE | OPT_SHOW_DEPS)) |
| ) { |
| DBG("skip deps of %s, it's already loaded", tokens[0]); |
| continue; |
| } |
| |
| m->flags |= MODULE_FLAG_FOUND_IN_MODDEP; |
| if ((m->flags & MODULE_FLAG_NEED_DEPS) && (m->deps == NULL)) { |
| G.num_unresolved_deps--; |
| llist_add_to(&m->deps, xstrdup(tokens[0])); |
| if (tokens[1]) |
| string_to_llist(tokens[1], &m->deps, " \t"); |
| } else |
| DBG("skipping dep line"); |
| } |
| config_close(p); |
| } |
| |
| int modprobe_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| int modprobe_main(int argc UNUSED_PARAM, char **argv) |
| { |
| int rc; |
| unsigned opt; |
| struct module_entry *me; |
| |
| INIT_G(); |
| |
| IF_LONG_OPTS(applet_long_options = modprobe_longopts;) |
| opt_complementary = MODPROBE_COMPLEMENTARY; |
| opt = getopt32(argv, INSMOD_OPTS MODPROBE_OPTS INSMOD_ARGS); |
| argv += optind; |
| |
| /* Goto modules location */ |
| xchdir(CONFIG_DEFAULT_MODULES_DIR); |
| uname(&G.uts); |
| xchdir(G.uts.release); |
| |
| if (opt & OPT_LIST_ONLY) { |
| int i; |
| char *colon, *tokens[2]; |
| parser_t *p = config_open2(CONFIG_DEFAULT_DEPMOD_FILE, xfopen_for_read); |
| |
| for (i = 0; argv[i]; i++) |
| replace(argv[i], '-', '_'); |
| |
| while (config_read(p, tokens, 2, 1, "# \t", PARSE_NORMAL)) { |
| colon = last_char_is(tokens[0], ':'); |
| if (!colon) |
| continue; |
| *colon = '\0'; |
| if (!argv[0]) |
| puts(tokens[0]); |
| else { |
| char name[MODULE_NAME_LEN]; |
| filename2modname( |
| bb_get_last_path_component_nostrip(tokens[0]), |
| name |
| ); |
| 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 & OPT_REMOVE) { |
| /* "modprobe -r" (w/o params). |
| * "If name is NULL, all unused modules marked |
| * autoclean will be removed". |
| */ |
| if (bb_delete_module(NULL, O_NONBLOCK | O_EXCL) != 0) |
| bb_perror_nomsg_and_die(); |
| } |
| return EXIT_SUCCESS; |
| } |
| |
| /* Retrieve module names of already loaded modules */ |
| { |
| char *s; |
| parser_t *parser = config_open2("/proc/modules", fopen_for_read); |
| while (config_read(parser, &s, 1, 1, "# \t", PARSE_NORMAL & ~PARSE_GREEDY)) |
| get_or_add_modentry(s)->flags |= MODULE_FLAG_LOADED; |
| config_close(parser); |
| |
| parser = config_open2("modules.builtin", fopen_for_read); |
| while (config_read(parser, &s, 1, 1, "# \t", PARSE_NORMAL)) |
| get_or_add_modentry(s)->flags |= MODULE_FLAG_BUILTIN; |
| config_close(parser); |
| } |
| |
| if (opt & (OPT_INSERT_ALL | OPT_REMOVE)) { |
| /* Each argument is a module name */ |
| do { |
| DBG("adding module %s", *argv); |
| add_probe(*argv++); |
| } while (*argv); |
| } else { |
| /* First argument is module name, rest are parameters */ |
| DBG("probing just module %s", *argv); |
| add_probe(argv[0]); |
| #if ENABLE_FEATURE_CMDLINE_MODULE_OPTIONS |
| G.cmdline_mopts = parse_cmdline_module_options(argv, /*quote_spaces:*/ 1); |
| #endif |
| } |
| |
| /* Happens if all requested modules are already loaded */ |
| if (G.probes == NULL) |
| return EXIT_SUCCESS; |
| |
| read_config("/etc/modprobe.conf"); |
| read_config("/etc/modprobe.d"); |
| if (ENABLE_FEATURE_MODUTILS_SYMBOLS && G.need_symbols) |
| read_config("modules.symbols"); |
| load_modules_dep(); |
| if (ENABLE_FEATURE_MODUTILS_ALIAS && G.num_unresolved_deps) { |
| read_config("modules.alias"); |
| load_modules_dep(); |
| } |
| |
| rc = 0; |
| while ((me = llist_pop(&G.probes)) != NULL) { |
| if (me->realnames == NULL) { |
| DBG("probing by module name"); |
| /* This is not an alias. Literal names are blacklisted |
| * only if '-b' is given. |
| */ |
| if (!(opt & OPT_BLACKLIST) |
| || !(me->flags & MODULE_FLAG_BLACKLISTED) |
| ) { |
| rc |= do_modprobe(me); |
| } |
| continue; |
| } |
| |
| /* Probe all real names for the alias */ |
| do { |
| char *realname = llist_pop(&me->realnames); |
| struct module_entry *m2; |
| |
| DBG("probing alias %s by realname %s", me->modname, realname); |
| m2 = get_or_add_modentry(realname); |
| if (!(m2->flags & MODULE_FLAG_BLACKLISTED) |
| && (!(m2->flags & MODULE_FLAG_LOADED) |
| || (opt & (OPT_REMOVE | OPT_SHOW_DEPS))) |
| ) { |
| //TODO: we can pass "me" as 2nd param to do_modprobe, |
| //and make do_modprobe emit more meaningful error messages |
| //with alias name included, not just module name alias resolves to. |
| rc |= do_modprobe(m2); |
| } |
| free(realname); |
| } while (me->realnames != NULL); |
| } |
| |
| if (ENABLE_FEATURE_CLEAN_UP) |
| moddb_free(&G.db); |
| |
| return (rc != 0); |
| } |