/*
* Modprobe written from scratch for BusyBox
*
- * Copyright (c) 2002 by Robert Griebl, griebl@gmx.de
- * Copyright (c) 2003 by Andrew Dennison, andrew.dennison@motec.com.au
- * Copyright (c) 2005 by Jim Bauer, jfbauer@nfr.com
+ * Copyright (c) 2008 Timo Teras <timo.teras@iki.fi>
+ * Copyright (c) 2008 Vladimir Dronnikov
*
- * Portions Copyright (c) 2005 by Yann E. MORIN, yann.morin.1998@anciens.enib.fr
- *
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
-*/
-
-#include "busybox.h"
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+//config:config MODPROBE
+//config: bool "modprobe (28 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_NOEXEC(modprobe, modprobe, BB_DIR_SBIN, BB_SUID_DROP, modprobe)))
+
+//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>
-struct mod_opt_t { /* one-way list of options to pass to a module */
- char * m_opt_val;
- struct mod_opt_t * m_next;
-};
-
-struct dep_t { /* one-way list of dependency rules */
- /* a dependency rule */
- char * m_name; /* the module name*/
- char * m_path; /* the module file path */
- struct mod_opt_t * m_options; /* the module options */
-
- int m_isalias : 1; /* the module is an alias */
- int m_reserved : 15; /* stuffin' */
-
- int m_depcnt : 16; /* the number of dependable module(s) */
- char ** m_deparr; /* the list of dependable module(s) */
-
- struct dep_t * m_next; /* the next dependency rule */
-};
-
-struct mod_list_t { /* two-way list of modules to process */
- /* a module description */
- const char * m_name;
- char * m_path;
- struct mod_opt_t * m_options;
-
- struct mod_list_t * m_prev;
- struct mod_list_t * m_next;
-};
-
-
-static struct dep_t *depend;
-
-#define main_options "acdklnqrst:vVC:"
-#define INSERT_ALL 1 /* a */
-#define DUMP_CONF_EXIT 2 /* c */
-#define D_OPT_IGNORED 4 /* d */
-#define AUTOCLEAN_FLG 8 /* k */
-#define LIST_ALL 16 /* l */
-#define SHOW_ONLY 32 /* n */
-#define QUIET 64 /* q */
-#define REMOVE_OPT 128 /* r */
-#define DO_SYSLOG 256 /* s */
-#define RESTRICT_DIR 512 /* t */
-#define VERBOSE 1024 /* v */
-#define VERSION_ONLY 2048 /* V */
-#define CONFIG_FILE 4096 /* C */
-
-#define autoclean (main_opts & AUTOCLEAN_FLG)
-#define show_only (main_opts & SHOW_ONLY)
-#define quiet (main_opts & QUIET)
-#define remove_opt (main_opts & REMOVE_OPT)
-#define do_syslog (main_opts & DO_SYSLOG)
-#define verbose (main_opts & VERBOSE)
-
-static int main_opts;
-
-static int parse_tag_value(char *buffer, char **ptag, char **pvalue)
-{
- char *tag, *value;
-
- buffer = skip_whitespace(buffer);
- tag = value = buffer;
- while (!isspace(*value))
- if (!*value) return 0;
- else value++;
- *value++ = 0;
- value = skip_whitespace(value);
- if (!*value) return 0;
+#if 1
+#define DBG(...) ((void)0)
+#else
+#define DBG(fmt, ...) bb_error_msg("%s: " fmt, __func__, ## __VA_ARGS__)
+#endif
- *ptag = tag;
- *pvalue = value;
+/* 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.
+ */
- return 1;
-}
-/*
- * This function appends an option to a 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.
*/
-static struct mod_opt_t *append_option(struct mod_opt_t *opt_list, char *opt)
+#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)
{
- struct mod_opt_t *ol = opt_list;
-
- if (ol) {
- while (ol->m_next) {
- ol = ol->m_next;
+ /* 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);
}
- ol->m_next = xmalloc(sizeof(struct mod_opt_t));
- ol = ol->m_next;
- } else {
- ol = opt_list = xmalloc(sizeof(struct mod_opt_t));
}
-
- ol->m_opt_val = xstrdup(opt);
- ol->m_next = NULL;
-
- return opt_list;
+ return opts;
}
-#if ENABLE_FEATURE_MODPROBE_MULTIPLE_OPTIONS
-/* static char* parse_command_string(char* src, char **dst);
- * src: pointer to string containing argument
- * dst: pointer to where to store the parsed argument
- * return value: the pointer to the first char after the parsed argument,
- * NULL if there was no argument parsed (only trailing spaces).
- * Note that memory is allocated with xstrdup when a new argument was
- * parsed. Don't forget to free it!
- */
-#define ARG_EMPTY 0x00
-#define ARG_IN_DQUOTES 0x01
-#define ARG_IN_SQUOTES 0x02
-static char *parse_command_string(char *src, char **dst)
+static struct module_entry *get_or_add_modentry(const char *module)
{
- int opt_status = ARG_EMPTY;
- char* tmp_str;
+ return moddb_get_or_create(&G.db, module);
+}
- /* Dumb you, I have nothing to do... */
- if (src == NULL) return src;
+static void add_probe(const char *name)
+{
+ struct module_entry *m;
- /* Skip leading spaces */
- while (*src == ' ') {
- src++;
- }
- /* Is the end of string reached? */
- if (*src == '\0') {
- return NULL;
- }
- /* Reached the start of an argument
- * By the way, we duplicate a little too much
- * here but what is too much is freed later. */
- *dst = tmp_str = xstrdup(src);
- /* Get to the end of that argument */
- while (*tmp_str != '\0'
- && (*tmp_str != ' ' || (opt_status & (ARG_IN_DQUOTES | ARG_IN_SQUOTES)))
+ m = get_or_add_modentry(name);
+ if (!(option_mask32 & (OPT_REMOVE | OPT_SHOW_DEPS))
+ && (m->flags & (MODULE_FLAG_LOADED | MODULE_FLAG_BUILTIN))
) {
- switch (*tmp_str) {
- case '\'':
- if (opt_status & ARG_IN_DQUOTES) {
- /* Already in double quotes, keep current char as is */
- } else {
- /* shift left 1 char, until end of string: get rid of the opening/closing quotes */
- memmove(tmp_str, tmp_str + 1, strlen(tmp_str));
- /* mark me: we enter or leave single quotes */
- opt_status ^= ARG_IN_SQUOTES;
- /* Back one char, as we need to re-scan the new char there. */
- tmp_str--;
- }
- break;
- case '"':
- if (opt_status & ARG_IN_SQUOTES) {
- /* Already in single quotes, keep current char as is */
- } else {
- /* shift left 1 char, until end of string: get rid of the opening/closing quotes */
- memmove(tmp_str, tmp_str + 1, strlen(tmp_str));
- /* mark me: we enter or leave double quotes */
- opt_status ^= ARG_IN_DQUOTES;
- /* Back one char, as we need to re-scan the new char there. */
- tmp_str--;
- }
- break;
- case '\\':
- if (opt_status & ARG_IN_SQUOTES) {
- /* Between single quotes: keep as is. */
- } else {
- switch (*(tmp_str+1)) {
- case 'a':
- case 'b':
- case 't':
- case 'n':
- case 'v':
- case 'f':
- case 'r':
- case '0':
- /* We escaped a special character. For now, keep
- * both the back-slash and the following char. */
- tmp_str++; src++;
- break;
- default:
- /* We escaped a space or a single or double quote,
- * or a back-slash, or a non-escapable char. Remove
- * the '\' and keep the new current char as is. */
- memmove(tmp_str, tmp_str + 1, strlen(tmp_str));
- break;
- }
- }
- break;
- /* Any other char that is special shall appear here.
- * Example: $ starts a variable
- case '$':
- do_variable_expansion();
- break;
- * */
- default:
- /* any other char is kept as is. */
- break;
- }
- tmp_str++; /* Go to next char */
- src++; /* Go to next char to find the end of the argument. */
+ DBG("skipping %s, it is already loaded", name);
+ return;
}
- /* End of string, but still no ending quote */
- if (opt_status & (ARG_IN_DQUOTES | ARG_IN_SQUOTES)) {
- bb_error_msg_and_die("unterminated (single or double) quote in options list: %s", src);
+
+ 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;
}
- *tmp_str++ = '\0';
- *dst = xrealloc(*dst, (tmp_str - *dst));
- return src;
}
-#else
-#define parse_command_string(src, dst) (0)
-#endif /* ENABLE_FEATURE_MODPROBE_MULTIPLE_OPTIONS */
-/*
- * This function reads aliases and default module options from a configuration file
- * (/etc/modprobe.conf syntax). It supports includes (only files, no directories).
- */
-static void include_conf(struct dep_t **first, struct dep_t **current, char *buffer, int buflen, int fd)
+static int FAST_FUNC config_file_action(const char *filename,
+ struct stat *statbuf UNUSED_PARAM,
+ void *userdata UNUSED_PARAM,
+ int depth)
{
- int continuation_line = 0;
-
- // alias parsing is not 100% correct (no correct handling of continuation lines within an alias) !
-
- while (reads(fd, buffer, buflen)) {
- int l;
- char *p;
-
- p = strchr(buffer, '#');
- if (p)
- *p = 0;
-
- l = strlen(buffer);
-
- while (l && isspace(buffer[l-1])) {
- buffer[l-1] = 0;
- l--;
- }
-
- if (l == 0) {
- continuation_line = 0;
- continue;
- }
+ char *tokens[3];
+ parser_t *p;
+ struct module_entry *m;
+ int rc = TRUE;
+ const char *base;
+
+ /* 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) {
+ if (!is_suffixed_with(base, ".conf"))
+ goto error;
+ }
- if (!continuation_line) {
- if ((strncmp(buffer, "alias", 5) == 0) && isspace(buffer[5])) {
- char *alias, *mod;
-
- if (parse_tag_value(buffer + 6, &alias, &mod)) {
- /* handle alias as a module dependent on the aliased module */
- if (!*current) {
- (*first) = (*current) = xzalloc(sizeof(struct dep_t));
- } else {
- (*current)->m_next = xzalloc(sizeof(struct dep_t));
- (*current) = (*current)->m_next;
- }
- (*current)->m_name = xstrdup(alias);
- (*current)->m_isalias = 1;
-
- if ((strcmp(mod, "off") == 0) || (strcmp(mod, "null") == 0)) {
- (*current)->m_depcnt = 0;
- (*current)->m_deparr = 0;
- } else {
- (*current)->m_depcnt = 1;
- (*current)->m_deparr = xmalloc(1 * sizeof(char *));
- (*current)->m_deparr[0] = xstrdup(mod);
- }
- (*current)->m_next = 0;
- }
- } else if ((strncmp(buffer, "options", 7) == 0) && isspace(buffer[7])) {
- char *mod, *opt;
+ p = config_open2(filename, fopen_for_read);
+ if (p == NULL) {
+ rc = FALSE;
+ goto error;
+ }
- /* split the line in the module/alias name, and options */
- if (parse_tag_value(buffer + 8, &mod, &opt)) {
- struct dep_t *dt;
+ 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);
- /* find the corresponding module */
- for (dt = *first; dt; dt = dt->m_next) {
- if (strcmp(dt->m_name, mod) == 0)
- break;
- }
- if (dt) {
- if (ENABLE_FEATURE_MODPROBE_MULTIPLE_OPTIONS) {
- char* new_opt = NULL;
- while ((opt = parse_command_string(opt, &new_opt))) {
- dt->m_options = append_option(dt->m_options, new_opt);
- }
- } else {
- dt->m_options = append_option(dt->m_options, opt);
- }
- }
+ if (m->flags & MODULE_FLAG_NEED_DEPS) {
+ m->flags &= ~MODULE_FLAG_NEED_DEPS;
+ G.num_unresolved_deps--;
}
- } else if ((strncmp(buffer, "include", 7) == 0) && isspace(buffer[7])) {
- int fdi; char *filename;
- filename = skip_whitespace(buffer + 8);
-
- if ((fdi = open(filename, O_RDONLY)) >= 0) {
- include_conf(first, current, buffer, buflen, fdi);
- close(fdi);
+ 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;
}
-/*
- * This function builds a list of dependency rules from /lib/modules/`uname -r`/modules.dep.
- * It then fills every modules and aliases with their default options, found by parsing
- * modprobe.conf (or modules.conf, or conf.modules).
- */
-static struct dep_t *build_dep(void)
+static int read_config(const char *path)
{
- int fd;
- struct utsname un;
- struct dep_t *first = 0;
- struct dep_t *current = 0;
- char buffer[2048];
- char *filename;
- int continuation_line = 0;
- int k_version;
-
- if (uname(&un))
- bb_error_msg_and_die("can't determine kernel version");
-
- k_version = 0;
- if (un.release[0] == '2') {
- k_version = un.release[2] - '0';
- }
-
- filename = xasprintf("/lib/modules/%s/modules.dep", un.release);
- fd = open(filename, O_RDONLY);
- if (ENABLE_FEATURE_CLEAN_UP)
- free(filename);
- if (fd < 0) {
- /* Ok, that didn't work. Fall back to looking in /lib/modules */
- fd = open("/lib/modules/modules.dep", O_RDONLY);
- if (fd < 0) {
- return 0;
- }
- }
-
- while (reads(fd, buffer, sizeof(buffer))) {
- int l = strlen(buffer);
- char *p = 0;
-
- while (l > 0 && isspace(buffer[l-1])) {
- buffer[l-1] = 0;
- l--;
- }
-
- if (l == 0) {
- continuation_line = 0;
- continue;
- }
-
- /* Is this a new module dep description? */
- if (!continuation_line) {
- /* find the dep beginning */
- char *col = strchr(buffer, ':');
- char *dot = col;
-
- if (col) {
- /* This line is a dep description */
- char *mods;
- char *modpath;
- char *mod;
-
- /* Find the beginning of the module file name */
- *col = 0;
- mods = strrchr(buffer, '/');
-
- if (!mods)
- mods = buffer; /* no path for this module */
- else
- mods++; /* there was a path for this module... */
-
- /* find the path of the module */
- modpath = strchr(buffer, '/'); /* ... and this is the path */
- if (!modpath)
- modpath = buffer; /* module with no path */
- /* find the end of the module name in the file name */
- if (ENABLE_FEATURE_2_6_MODULES &&
- (k_version > 4) && (*(col-3) == '.') &&
- (*(col-2) == 'k') && (*(col-1) == 'o'))
- dot = col - 3;
- else
- if ((*(col-2) == '.') && (*(col-1) == 'o'))
- dot = col - 2;
-
- mod = xstrndup(mods, dot - mods);
-
- /* enqueue new module */
- if (!current) {
- first = current = xmalloc(sizeof(struct dep_t));
- } else {
- current->m_next = xmalloc(sizeof(struct dep_t));
- current = current->m_next;
- }
- current->m_name = mod;
- current->m_path = xstrdup(modpath);
- current->m_options = NULL;
- current->m_isalias = 0;
- current->m_depcnt = 0;
- current->m_deparr = 0;
- current->m_next = 0;
-
- p = col + 1;
- } else
- /* this line is not a dep description */
- p = 0;
- } else
- /* It's a dep description continuation */
- p = buffer;
-
- while (p && *p && isblank(*p))
- p++;
-
- /* p points to the first dependable module; if NULL, no dependable module */
- if (p && *p) {
- char *end = &buffer[l-1];
- char *deps;
- char *dep;
- char *next;
- int ext = 0;
-
- while (isblank(*end) || (*end == '\\'))
- end--;
-
- do {
- /* search the end of the dependency */
- next = strchr(p, ' ');
- if (next) {
- *next = 0;
- next--;
- } else
- next = end;
-
- /* find the beginning of the module file name */
- deps = strrchr(p, '/');
-
- if (!deps || (deps < p)) {
- deps = p;
-
- while (isblank(*deps))
- deps++;
- } else
- deps++;
-
- /* find the end of the module name in the file name */
- if (ENABLE_FEATURE_2_6_MODULES
- && (k_version > 4) && (*(next-2) == '.')
- && (*(next-1) == 'k') && (*next == 'o'))
- ext = 3;
- else
- if ((*(next-1) == '.') && (*next == 'o'))
- ext = 2;
-
- /* Cope with blank lines */
- if ((next-deps-ext+1) <= 0)
- continue;
- dep = xstrndup(deps, next - deps - ext + 1);
-
- /* Add the new dependable module name */
- current->m_depcnt++;
- current->m_deparr = xrealloc(current->m_deparr,
- sizeof(char *) * current->m_depcnt);
- current->m_deparr[current->m_depcnt - 1] = dep;
-
- p = next + 2;
- } while (next < end);
- }
-
- /* is there other dependable module(s) ? */
- if (buffer[l-1] == '\\')
- continuation_line = 1;
- else
- continuation_line = 0;
- }
- close(fd);
-
- /*
- * First parse system-specific options and aliases
- * as they take precedence over the kernel ones.
- * >=2.6: we only care about modprobe.conf
- * <=2.4: we care about modules.conf and conf.modules
- */
- if (ENABLE_FEATURE_2_6_MODULES
- && (fd = open("/etc/modprobe.conf", O_RDONLY)) < 0)
- if (ENABLE_FEATURE_2_4_MODULES
- && (fd = open("/etc/modules.conf", O_RDONLY)) < 0)
- if (ENABLE_FEATURE_2_4_MODULES)
- fd = open("/etc/conf.modules", O_RDONLY);
-
- if (fd >= 0) {
- include_conf(&first, ¤t, buffer, sizeof(buffer), fd);
- close(fd);
- }
-
- /* Only 2.6 has a modules.alias file */
- if (ENABLE_FEATURE_2_6_MODULES) {
- /* Parse kernel-declared aliases */
- filename = xasprintf("/lib/modules/%s/modules.alias", un.release);
- fd = open(filename, O_RDONLY);
- if (fd < 0) {
- /* Ok, that didn't work. Fall back to looking in /lib/modules */
- fd = open("/lib/modules/modules.alias", O_RDONLY);
- }
- if (ENABLE_FEATURE_CLEAN_UP)
- free(filename);
-
- if (fd >= 0) {
- include_conf(&first, ¤t, buffer, sizeof(buffer), fd);
- close(fd);
- }
- }
-
- return first;
+ return recursive_action(path, ACTION_RECURSE | ACTION_QUIET,
+ config_file_action, NULL, NULL,
+ /*depth:*/ 0);
}
-/* return 1 = loaded, 0 = not loaded, -1 = can't tell */
-static int already_loaded(const char *name)
+static const char *humanly_readable_name(struct module_entry *m)
{
- int fd, ret = 0;
- char buffer[4096];
-
- fd = open("/proc/modules", O_RDONLY);
- if (fd < 0)
- return -1;
-
- while (reads(fd, buffer, sizeof(buffer))) {
- char *p;
-
- p = strchr (buffer, ' ');
- if (p) {
- const char *n;
-
- // Truncate buffer at first space and check for matches, with
- // the idiosyncrasy that _ and - are interchangeable because the
- // 2.6 kernel does weird things.
-
- *p = 0;
- for (p = buffer, n = name; ; p++, n++) {
- if (*p != *n) {
- if ((*p == '_' || *p == '-') && (*n == '_' || *n == '-'))
- continue;
- break;
- }
- // If we made it to the end, that's a match.
- if (!*p) {
- ret = 1;
- goto done;
- }
- }
- }
- }
-done:
- close (fd);
- return ret;
+ /* probed_name may be NULL. modname always exists. */
+ return m->probed_name ? m->probed_name : m->modname;
}
-static int mod_process(const struct mod_list_t *list, int do_insert)
+/* Like strsep(&stringp, "\n\t ") but quoted text goes to single token
+ * even if it contains whitespace.
+ */
+static char *strsep_quotes(char **stringp)
{
- int rc = 0;
- char **argv = NULL;
- struct mod_opt_t *opts;
- int argc_malloc; /* never used when CONFIG_FEATURE_CLEAN_UP not defined */
- int argc;
-
- while (list) {
- argc = 0;
- if (ENABLE_FEATURE_CLEAN_UP)
- argc_malloc = 0;
- /* If CONFIG_FEATURE_CLEAN_UP is not defined, then we leak memory
- * each time we allocate memory for argv.
- * But it is (quite) small amounts of memory that leak each
- * time a module is loaded, and it is reclaimed when modprobe
- * exits anyway (even when standalone shell?).
- * This could become a problem when loading a module with LOTS of
- * dependencies, with LOTS of options for each dependencies, with
- * very little memory on the target... But in that case, the module
- * would not load because there is no more memory, so there's no
- * problem. */
- /* enough for minimal insmod (5 args + NULL) or rmmod (3 args + NULL) */
- argv = xmalloc(6 * sizeof(char*));
- if (do_insert) {
- if (already_loaded(list->m_name) != 1) {
- argv[argc++] = (char*)"insmod";
- if (ENABLE_FEATURE_2_4_MODULES) {
- if (do_syslog)
- argv[argc++] = (char*)"-s";
- if (autoclean)
- argv[argc++] = (char*)"-k";
- if (quiet)
- argv[argc++] = (char*)"-q";
- else if (verbose) /* verbose and quiet are mutually exclusive */
- argv[argc++] = (char*)"-v";
- }
- argv[argc++] = list->m_path;
- if (ENABLE_FEATURE_CLEAN_UP)
- argc_malloc = argc;
- opts = list->m_options;
- while (opts) {
- /* Add one more option */
- argc++;
- argv = xrealloc(argv,(argc + 1)* sizeof(char*));
- argv[argc-1] = opts->m_opt_val;
- opts = opts->m_next;
- }
- }
- } else {
- /* modutils uses short name for removal */
- if (already_loaded(list->m_name) != 0) {
- argv[argc++] = (char*)"rmmod";
- if (do_syslog)
- argv[argc++] = (char*)"-s";
- argv[argc++] = (char*)list->m_name;
- if (ENABLE_FEATURE_CLEAN_UP)
- argc_malloc = argc;
- }
- }
- argv[argc] = NULL;
+ char *s, *start = *stringp;
- if (argc) {
- if (verbose) {
- printf("%s module %s\n", do_insert?"Loading":"Unloading", list->m_name);
- }
- if (!show_only) {
- int rc2 = wait4pid(spawn(argv));
+ if (!start)
+ return NULL;
- if (do_insert) {
- rc = rc2; /* only last module matters */
- } else if (!rc2) {
- rc = 0; /* success if remove any mod */
- }
- }
- if (ENABLE_FEATURE_CLEAN_UP) {
- /* the last value in the array has index == argc, but
- * it is the terminating NULL, so we must not free it. */
- while (argc_malloc < argc) {
- free(argv[argc_malloc++]);
- }
+ 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;
}
- if (ENABLE_FEATURE_CLEAN_UP) {
- free(argv);
- argv = NULL;
- }
- list = do_insert ? list->m_prev : list->m_next;
}
- return (show_only) ? 0 : rc;
}
-/*
- * Check the matching between a pattern and a module name.
- * We need this as *_* is equivalent to *-*, even in pattern matching.
- */
-static int check_pattern(const char* pat_src, const char* mod_src) {
- int ret;
-
- if (ENABLE_FEATURE_MODPROBE_FANCY_ALIAS) {
- char* pat;
- char* mod;
- char* p;
-
- pat = xstrdup(pat_src);
- mod = xstrdup(mod_src);
-
- for (p = pat; (p = strchr(p, '-')); *p++ = '_');
- for (p = mod; (p = strchr(p, '-')); *p++ = '_');
-
- ret = fnmatch(pat, mod, 0);
-
- if (ENABLE_FEATURE_CLEAN_UP) {
- free(pat);
- free(mod);
+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);
}
-
- return ret;
- } else {
- return fnmatch(pat_src, mod_src, 0);
}
+ free(kcmdline_buf);
+
+ return options;
}
-/*
- * Builds the dependency list (aka stack) of a module.
- * head: the highest module in the stack (last to insmod, first to rmmod)
- * tail: the lowest module in the stack (first to insmod, last to rmmod)
+/* Return: similar to bb_init_module:
+ * 0 on success,
+ * -errno on open/read error,
+ * errno on init_module() error
*/
-static void check_dep(char *mod, struct mod_list_t **head, struct mod_list_t **tail)
+/* 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 mod_list_t *find;
- struct dep_t *dt;
- struct mod_opt_t *opt = 0;
- char *path = 0;
-
- /* Search for the given module name amongst all dependency rules.
- * The module name in a dependency rule can be a shell pattern,
- * so try to match the given module name against such a pattern.
- * Of course if the name in the dependency rule is a plain string,
- * then we consider it a pattern, and matching will still work. */
- for (dt = depend; dt; dt = dt->m_next) {
- if (check_pattern(dt->m_name, mod) == 0) {
- break;
- }
+ 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 (!dt) {
- bb_error_msg("module %s not found", mod);
- return;
- }
+ if (!(option_mask32 & OPT_REMOVE))
+ m->deps = llist_rev(m->deps);
- // resolve alias names
- while (dt->m_isalias) {
- if (dt->m_depcnt == 1) {
- struct dep_t *adt;
+ if (0) {
+ llist_t *l;
+ for (l = m->deps; l; l = l->link)
+ DBG("dep: %s", l->data);
+ }
- for (adt = depend; adt; adt = adt->m_next) {
- if (check_pattern(adt->m_name, dt->m_deparr[0]) == 0)
- break;
- }
- if (adt) {
- /* This is the module we are aliased to */
- struct mod_opt_t *opts = dt->m_options;
- /* Option of the alias are appended to the options of the module */
- while (opts) {
- adt->m_options = append_option(adt->m_options, opts->m_opt_val);
- opts = opts->m_next;
+ 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;
}
- dt = adt;
- } else {
- bb_error_msg("module %s not found", mod);
- return;
}
- } else {
- bb_error_msg("bad alias %s", dt->m_name);
- return;
+ /* do not error out if *deps* fail to unload */
+ first = 0;
+ continue;
}
- }
-
- mod = dt->m_name;
- path = dt->m_path;
- opt = dt->m_options;
-
- // search for duplicates
- for (find = *head; find; find = find->m_next) {
- if (!strcmp(mod, find->m_name)) {
- // found ->dequeue it
- if (find->m_prev)
- find->m_prev->m_next = find->m_next;
- else
- *head = find->m_next;
+ 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 (find->m_next)
- find->m_next->m_prev = find->m_prev;
- else
- *tail = find->m_prev;
+ if (m2->flags & MODULE_FLAG_LOADED) {
+ DBG("%s is already loaded, skipping", fn);
+ free(options);
+ continue;
+ }
- break; // there can be only one duplicate
+ 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;
}
- if (!find) { // did not find a duplicate
- find = xmalloc(sizeof(struct mod_list_t));
- find->m_name = mod;
- find->m_path = path;
- find->m_options = opt;
- }
+ return rc;
+}
- // enqueue at tail
- if (*tail)
- (*tail)->m_next = find;
- find->m_prev = *tail;
- find->m_next = 0;
+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';
- if (!*head)
- *head = find;
- *tail = find;
+ m = moddb_get(&G.db, bb_get_last_path_component_nostrip(tokens[0]));
+ if (m == NULL)
+ continue;
- if (dt) {
- int i;
+ /* 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;
+ }
- /* Add all dependable module for that new module */
- for (i = 0; i < dt->m_depcnt; i++)
- check_dep(dt->m_deparr[i], head, tail);
+ 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);
}
-static int mod_insert(char *mod, int argc, char **argv)
+int modprobe_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int modprobe_main(int argc UNUSED_PARAM, char **argv)
{
- struct mod_list_t *tail = NULL;
- struct mod_list_t *head = NULL;
int rc;
+ unsigned opt;
+ struct module_entry *me;
- // get dep list for module mod
- check_dep(mod, &head, &tail);
+ INIT_G();
- rc = 1;
- if (head && tail) {
- if (argc) {
- int i;
- // append module args
- for (i = 0; i < argc; i++)
- head->m_options = append_option(head->m_options, argv[i]);
- }
+ opt = getopt32long(argv, "^" INSMOD_OPTS MODPROBE_OPTS "\0" MODPROBE_COMPLEMENTARY,
+ modprobe_longopts
+ INSMOD_ARGS
+ );
+ argv += optind;
- // process tail ---> head
- rc = mod_process(tail, 1);
- if (rc) {
- /*
- * In case of using udev, multiple instances of modprobe can be
- * spawned to load the same module (think of two same usb devices,
- * for example; or cold-plugging at boot time). Thus we shouldn't
- * fail if the module was loaded, and not by us.
- */
- if (already_loaded(mod))
- rc = 0;
+ /* 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;
}
- return rc;
-}
-static int mod_remove(char *mod)
-{
- int rc;
- static const struct mod_list_t rm_a_dummy = { "-a", NULL, NULL, NULL, NULL };
+ /* Yes, for some reason -l ignores -s... */
+ if (opt & INSMOD_OPT_SYSLOG)
+ logmode = LOGMODE_SYSLOG;
- struct mod_list_t *head = NULL;
- struct mod_list_t *tail = NULL;
-
- if (mod)
- check_dep(mod, &head, &tail);
- else // autoclean
- head = tail = (struct mod_list_t*) &rm_a_dummy;
+ 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;
+ }
- rc = 1;
- if (head && tail)
- rc = mod_process(head, 0); // process head ---> tail
- return rc;
-}
+ /* 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);
+ }
-int modprobe_main(int argc, char** argv);
-int modprobe_main(int argc, char** argv)
-{
- int rc = EXIT_SUCCESS;
- char *unused;
+ 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
+ }
- opt_complementary = "?V-:q-v:v-q";
- main_opts = getopt32(argc, argv, "acdklnqrst:vVC:",
- &unused, &unused);
- if (main_opts & (DUMP_CONF_EXIT | LIST_ALL))
+ /* Happens if all requested modules are already loaded */
+ if (G.probes == NULL)
return EXIT_SUCCESS;
- if (main_opts & (RESTRICT_DIR | CONFIG_FILE))
- bb_error_msg_and_die("-t and -C not supported");
- depend = build_dep();
+ 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();
+ }
- if (!depend)
- bb_error_msg_and_die("cannot parse 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;
+ }
- if (remove_opt) {
+ /* Probe all real names for the alias */
do {
- if (mod_remove(optind < argc ?
- argv[optind] : NULL)) {
- bb_error_msg("failed to remove module %s",
- argv[optind]);
- rc = EXIT_FAILURE;
+ 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);
}
- } while (++optind < argc);
- } else {
- if (optind >= argc)
- bb_error_msg_and_die("no module or pattern provided");
-
- if (mod_insert(argv[optind], argc - optind - 1, argv + optind + 1))
- bb_error_msg_and_die("failed to load module %s", argv[optind]);
+ free(realname);
+ } while (me->realnames != NULL);
}
- /* Here would be a good place to free up memory allocated during the dependencies build. */
+ if (ENABLE_FEATURE_CLEAN_UP)
+ moddb_free(&G.db);
- return rc;
+ return (rc != 0);
}
projects / oweals / busybox.git / blobdiff