* Copyright (c) 2008 Timo Teras <timo.teras@iki.fi>
* Copyright (c) 2008 Vladimir Dronnikov
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * 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>
-//#define DBG(...) bb_error_msg(__VA_ARGS__)
+#if 1
#define DBG(...) ((void)0)
+#else
+#define DBG(fmt, ...) bb_error_msg("%s: " fmt, __func__, ## __VA_ARGS__)
+#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
-
-struct module_entry { /* I'll call it ME. */
- unsigned flags;
- char *modname; /* stripped of /path/, .ext and s/-/_/g */
- const char *probed_name; /* verbatim as seen on cmdline */
- char *options; /* options from config files */
- llist_t *realnames; /* strings. if this module is an alias, */
- /* real module name is one of these. */
-//Can there really be more than one? Example from real kernel?
- llist_t *deps; /* strings. modules we depend on */
-};
+/* 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.
+ */
-#define MODPROBE_OPTS "acdlnrt:VC:" USE_FEATURE_MODPROBE_BLACKLIST("b")
+
+//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 {
- 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,
+ 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 *db; /* MEs of all modules ever seen (caching for speed) */
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;
-};
-#define G (*(struct globals*)&bb_common_bufsiz1)
-#define INIT_G() do { } while (0)
+ 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 (opts == NULL) {
- opts = xstrdup(append);
- } else {
- int optlen = strlen(opts);
- opts = xrealloc(opts, optlen + strlen(append) + 2);
- sprintf(opts + optlen, " %s", append);
+ 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 *helper_get_module(const char *module, int create)
-{
- char modname[MODULE_NAME_LEN];
- struct module_entry *e;
- llist_t *l;
-
- filename2modname(module, modname);
- for (l = G.db; l != NULL; l = l->link) {
- e = (struct module_entry *) l->data;
- if (strcmp(e->modname, modname) == 0)
- return e;
- }
- if (!create)
- return NULL;
-
- e = xzalloc(sizeof(*e));
- e->modname = xstrdup(modname);
- llist_add_to(&G.db, e);
-
- return e;
-}
static struct module_entry *get_or_add_modentry(const char *module)
{
- return helper_get_module(module, 1);
-}
-static struct module_entry *get_modentry(const char *module)
-{
- return helper_get_module(module, 0);
+ 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 (m->flags & MODULE_FLAG_LOADED) {
+ 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
- && strncmp(m->modname, "symbol:", 7) == 0
+ && 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 UNUSED_PARAM)
+ int depth)
{
char *tokens[3];
parser_t *p;
- struct module_entry *m;
+ struct module_entry *m;
int rc = TRUE;
+ const char *base;
- if (bb_basename(filename)[0] == '.')
+ /* 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;
+ }
+
p = config_open2(filename, fopen_for_read);
if (p == NULL) {
rc = FALSE;
continue;
filename2modname(tokens[1], wildcard);
- for (l = G.probes; l != NULL; l = l->link) {
+ for (l = G.probes; l; l = l->link) {
m = (struct module_entry *) l->data;
if (fnmatch(wildcard, m->modname, 0) != 0)
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> */
+ /* include <filename>/<dirname> (yes, directories also must work) */
read_config(tokens[1]);
} else if (ENABLE_FEATURE_MODPROBE_BLACKLIST
&& strcmp(tokens[0], "blacklist") == 0
}
}
config_close(p);
-error:
+ error:
return rc;
}
static int read_config(const char *path)
{
return recursive_action(path, ACTION_RECURSE | ACTION_QUIET,
- config_file_action, NULL, NULL, 1);
+ 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)
{
- struct module_entry *m2;
- char *fn, *options;
- int rc = -1;
+ int rc, first;
if (!(m->flags & MODULE_FLAG_FOUND_IN_MODDEP)) {
- DBG("skipping %s, not found in modules.dep", m->modname);
+ 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 & MODPROBE_OPT_REMOVE))
+ 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 && rc == 0) {
- fn = llist_pop(&m->deps);
- m2 = get_or_add_modentry(fn);
- if (option_mask32 & MODPROBE_OPT_REMOVE) {
- if (bb_delete_module(m->modname, O_EXCL) != 0)
- rc = errno;
- } else if (!(m2->flags & MODULE_FLAG_LOADED)) {
- options = m2->options;
- m2->options = NULL;
- if (m == m2)
- options = gather_options_str(options, G.cmdline_mopts);
- rc = bb_init_module(fn, options);
- DBG("loaded %s '%s', rc:%d", fn, options, rc);
- if (rc == 0)
- m2->flags |= MODULE_FLAG_LOADED;
+ 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);
- } else {
- DBG("%s is already loaded, skipping", fn);
+ continue;
}
- free(fn);
- }
+ if (m2->flags & MODULE_FLAG_LOADED) {
+ DBG("%s is already loaded, skipping", fn);
+ free(options);
+ continue;
+ }
-//FIXME: what if rc < 0?
- if (rc > 0 && !(option_mask32 & INSMOD_OPT_SILENT)) {
- bb_error_msg("failed to %sload module %s: %s",
- (option_mask32 & MODPROBE_OPT_REMOVE) ? "un" : "",
- m->probed_name ? m->probed_name : m->modname,
- moderror(rc)
- );
+ 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;
char *colon, *tokens[2];
parser_t *p;
- /* Modprobe does not work at all without modprobe.dep,
+ /* 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".
colon = last_char_is(tokens[0], ':');
if (colon == NULL)
continue;
- *colon = 0;
+ *colon = '\0';
- m = get_modentry(tokens[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 & MODPROBE_OPT_REMOVE)
+ && !(option_mask32 & (OPT_REMOVE | OPT_SHOW_DEPS))
) {
DBG("skip deps of %s, it's already loaded", tokens[0]);
continue;
G.num_unresolved_deps--;
llist_add_to(&m->deps, xstrdup(tokens[0]));
if (tokens[1])
- string_to_llist(tokens[1], &m->deps, " ");
- }
+ 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)
{
- struct utsname uts;
int rc;
unsigned opt;
struct module_entry *me;
- opt_complementary = "q-v:v-q";
- opt = getopt32(argv, INSMOD_OPTS MODPROBE_OPTS INSMOD_ARGS, NULL, NULL);
+ INIT_G();
+
+ opt = getopt32long(argv, "^" INSMOD_OPTS MODPROBE_OPTS "\0" MODPROBE_COMPLEMENTARY,
+ modprobe_longopts
+ 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");
+ /* 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 & MODPROBE_OPT_REMOVE) {
+ 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_msg_and_die("rmmod");
+ if (bb_delete_module(NULL, O_NONBLOCK | O_EXCL) != 0)
+ bb_perror_nomsg_and_die();
}
return EXIT_SUCCESS;
}
- /* Goto modules location */
- xchdir(CONFIG_DEFAULT_MODULES_DIR);
- uname(&uts);
- xchdir(uts.release);
-
/* Retrieve module names of already loaded modules */
{
char *s;
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 & MODPROBE_OPT_INSERT_ALL) {
+ 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]);
- G.cmdline_mopts = parse_cmdline_module_options(argv);
+#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 */
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 & MODPROBE_OPT_BLACKLIST)
+ if (!(opt & OPT_BLACKLIST)
|| !(me->flags & MODULE_FLAG_BLACKLISTED)
) {
- rc = do_modprobe(me);
-//FIXME: what if rc > 0?
- if (rc < 0 && !(opt & INSMOD_OPT_SILENT))
- bb_error_msg("module %s not found",
- me->probed_name);
+ rc |= do_modprobe(me);
}
- } else {
- /* Probe all realnames */
- do {
- char *realname = llist_pop(&me->realnames);
- struct module_entry *m2;
-
- DBG("probing %s by realname %s", me->modname, realname);
- m2 = get_or_add_modentry(realname);
- if (!(m2->flags & MODULE_FLAG_BLACKLISTED))
- do_modprobe(m2);
-//FIXME: error check?
- free(realname);
- } while (me->realnames != NULL);
+ 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);
}
- return EXIT_SUCCESS;
+ if (ENABLE_FEATURE_CLEAN_UP)
+ moddb_free(&G.db);
+
+ return (rc != 0);
}
projects / oweals / busybox.git / blobdiff