* Licensed under GPLv2, see file LICENSE in this source tree.
*/
-//applet:IF_MODPROBE_SMALL(APPLET(modprobe, BB_DIR_SBIN, BB_SUID_DROP))
-//applet:IF_MODPROBE_SMALL(APPLET_ODDNAME(depmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, depmod))
-//applet:IF_MODPROBE_SMALL(APPLET_ODDNAME(insmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, insmod))
-//applet:IF_MODPROBE_SMALL(APPLET_ODDNAME(lsmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, lsmod))
-//applet:IF_MODPROBE_SMALL(APPLET_ODDNAME(rmmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, rmmod))
+/* modprobe-small configs are defined in Config.src to ensure better
+ * "make config" order */
+
+//applet:IF_LSMOD( IF_MODPROBE_SMALL(APPLET(lsmod, BB_DIR_SBIN, BB_SUID_DROP)))
+//applet:IF_MODPROBE(IF_MODPROBE_SMALL(APPLET(modprobe, BB_DIR_SBIN, BB_SUID_DROP)))
+// APPLET_ODDNAME:name main location suid_type help
+//applet:IF_DEPMOD(IF_MODPROBE_SMALL(APPLET_ODDNAME(depmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, depmod)))
+//applet:IF_INSMOD(IF_MODPROBE_SMALL(APPLET_ODDNAME(insmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, insmod)))
+//applet:IF_RMMOD( IF_MODPROBE_SMALL(APPLET_ODDNAME(rmmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, rmmod)))
+
+//kbuild:lib-$(CONFIG_MODPROBE_SMALL) += modprobe-small.o
#include "libbb.h"
/* After libbb.h, since it needs sys/types.h on some systems */
#include <fnmatch.h>
#include <sys/syscall.h>
-extern int init_module(void *module, unsigned long len, const char *options);
-extern int delete_module(const char *module, unsigned flags);
+#define init_module(mod, len, opts) syscall(__NR_init_module, mod, len, opts)
+#define delete_module(mod, flags) syscall(__NR_delete_module, mod, flags)
#ifdef __NR_finit_module
# define finit_module(fd, uargs, flags) syscall(__NR_finit_module, fd, uargs, flags)
#endif
#define DEPFILE_BB CONFIG_DEFAULT_DEPMOD_FILE".bb"
+//usage:#if ENABLE_MODPROBE_SMALL
+
+//usage:#define lsmod_trivial_usage
+//usage: ""
+//usage:#define lsmod_full_usage "\n\n"
+//usage: "List loaded kernel modules"
+
+//usage:#endif
+
+#if ENABLE_LSMOD
+int lsmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int lsmod_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
+{
+ xprint_and_close_file(xfopen_for_read("/proc/modules"));
+ return EXIT_SUCCESS;
+}
+#endif
+
+/* Num of applets that use modprobe_main() entry point. */
+/* lsmod is not here. */
+#define MOD_APPLET_CNT (ENABLE_MODPROBE + ENABLE_DEPMOD + ENABLE_INSMOD + ENABLE_RMMOD)
+
+/* Do not bother if MODPROBE_SMALL=y but no applets selected. */
+/* The rest of the file is in this if block. */
+#if MOD_APPLET_CNT > 0
+
+#define ONLY_APPLET (MOD_APPLET_CNT == 1)
+#define is_modprobe (ENABLE_MODPROBE && (ONLY_APPLET || applet_name[0] == 'm'))
+#define is_depmod (ENABLE_DEPMOD && (ONLY_APPLET || applet_name[0] == 'd'))
+#define is_insmod (ENABLE_INSMOD && (ONLY_APPLET || applet_name[0] == 'i'))
+#define is_rmmod (ENABLE_RMMOD && (ONLY_APPLET || applet_name[0] == 'r'))
+
enum {
+ DEPMOD_OPT_n = (1 << 0), /* dry-run, print to stdout */
OPT_q = (1 << 0), /* be quiet */
OPT_r = (1 << 1), /* module removal instead of loading */
};
/* search for the first char in word */
ptr = memchr(ptr, word[0], len);
- if (ptr == NULL) /* no occurance left, done */
+ if (ptr == NULL) /* no occurrence left, done */
break;
after_word = is_prefixed_with(ptr, word);
if (after_word)
{
int cur;
const char *fname;
+ bool is_remove = (ENABLE_RMMOD && ONLY_APPLET)
+ || ((ENABLE_RMMOD || ENABLE_MODPROBE) && (option_mask32 & OPT_r));
pathname += 2; /* skip "./" */
fname = bb_get_last_path_component_nostrip(pathname);
if (parse_module(&modinfo[cur], pathname) != 0)
return TRUE; /* failed to open/read it, no point in trying loading */
- if (!(option_mask32 & OPT_r)) {
+ if (!is_remove) {
if (load_module(pathname, module_load_options) == 0) {
/* Load was successful, there is nothing else to do.
* This can happen ONLY for "top-level" module load,
- * not a dep, because deps dont do dirscan. */
+ * not a dep, because deps don't do dirscan. */
exit(EXIT_SUCCESS);
}
}
int fd;
/* depmod -n: write result to stdout */
- if (applet_name[0] == 'd' && (option_mask32 & 1))
+ if (is_depmod && (option_mask32 & DEPMOD_OPT_n))
return STDOUT_FILENO;
fd = open(DEPFILE_BB".new", O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0644);
* NB: also called by depmod with bogus name "/",
* just in order to force modprobe.dep.bb creation.
*/
-#if !ENABLE_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
+#if !ENABLE_FEATURE_CMDLINE_MODULE_OPTIONS
#define process_module(a,b) process_module(a)
#define cmdline_options ""
#endif
module_info **infovec;
module_info *info;
int infoidx;
- int is_remove = (option_mask32 & OPT_r) != 0;
+ bool is_remove = (ENABLE_RMMOD && ONLY_APPLET)
+ || ((ENABLE_RMMOD || ENABLE_MODPROBE) && (option_mask32 & OPT_r));
int exitcode = EXIT_SUCCESS;
dbg1_error_msg("process_module('%s','%s')", name, cmdline_options);
dbg1_error_msg("already_loaded:%d is_remove:%d", already_loaded(name), is_remove);
- if (applet_name[0] == 'r') {
- /* rmmod.
- * Does not remove dependencies, no need to scan, just remove.
+ if (is_rmmod) {
+ /* Does not remove dependencies, no need to scan, just remove.
* (compat note: this allows and strips .ko suffix)
*/
rmmod(name);
options = xmalloc_open_read_close(opt_filename, NULL);
if (options)
replace(options, '\n', ' ');
-#if ENABLE_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
+#if ENABLE_FEATURE_CMDLINE_MODULE_OPTIONS
if (cmdline_options) {
/* NB: cmdline_options always have one leading ' '
* (see main()), we remove it here */
if (!infovec) {
/* both dirscan and find_alias found nothing */
- if (!is_remove && applet_name[0] != 'd') /* it wasn't rmmod or depmod */
+ if (!is_remove && !is_depmod) { /* it wasn't rmmod or depmod */
bb_error_msg("module '%s' not found", name);
//TODO: _and_die()? or should we continue (un)loading modules listed on cmdline?
+ /* "modprobe non-existing-module; echo $?" must print 1 */
+ exitcode = EXIT_FAILURE;
+ }
goto ret;
}
should eventually fall to zero).
# modprobe
-Usage: modprobe [-v] [-V] [-C config-file] [-n] [-i] [-q] [-b]
- [-o <modname>] [ --dump-modversions ] <modname> [parameters...]
+Usage: modprobe [-v] [-V] [-C config-file] [-d <dirname> ] [-n] [-i] [-q]
+ [-b] [-o <modname>] [ --dump-modversions ] <modname> [parameters...]
modprobe -r [-n] [-i] [-v] <modulename> ...
modprobe -l -t <dirname> [ -a <modulename> ...]
# depmod --help
-depmod 3.4 -- part of module-init-tools
-depmod -[aA] [-n -e -v -q -V -r -u]
+depmod 3.13 -- part of module-init-tools
+depmod -[aA] [-n -e -v -q -V -r -u -w -m]
[-b basedirectory] [forced_version]
-depmod [-n -e -v -q -r -u] [-F kernelsyms] module1.ko module2.ko ...
+depmod [-n -e -v -q -r -u -w] [-F kernelsyms] module1.ko module2.ko ...
If no arguments (except options) are given, "depmod -a" is assumed.
depmod will output a dependency list suitable for the modprobe utility.
Options:
-a, --all Probe all modules
-A, --quick Only does the work if there's a new module
- -n, --show Write the dependency file on stdout only
-e, --errsyms Report not supplied symbols
+ -m, --map Create the legacy map files
+ -n, --show Write the dependency file on stdout only
+ -P, --symbol-prefix Architecture symbol prefix
-V, --version Print the release version
-v, --verbose Enable verbose mode
+ -w, --warn Warn on duplicates
-h, --help Print this usage message
The following options are useful for people managing distributions:
-b basedirectory
-F kernelsyms
--filesyms kernelsyms
Use the file instead of the current kernel symbols
+ -E Module.symvers
+ --symvers Module.symvers
+ Use Module.symvers file to check symbol versions
*/
//usage:#if ENABLE_MODPROBE_SMALL
-//usage:#define depmod_trivial_usage NOUSAGE_STR
-//usage:#define depmod_full_usage ""
-
-//usage:#define lsmod_trivial_usage
-//usage: ""
-//usage:#define lsmod_full_usage "\n\n"
-//usage: "List the currently loaded kernel modules"
+//usage:#define depmod_trivial_usage "[-n]"
+//usage:#define depmod_full_usage "\n\n"
+//usage: "Generate modules.dep.bb"
+//usage: "\n"
+//usage: "\n -n Dry run: print file to stdout"
//usage:#define insmod_trivial_usage
-//usage: IF_FEATURE_2_4_MODULES("[OPTIONS] MODULE ")
-//usage: IF_NOT_FEATURE_2_4_MODULES("FILE ")
-//usage: "[SYMBOL=VALUE]..."
+//usage: "FILE" IF_FEATURE_CMDLINE_MODULE_OPTIONS(" [SYMBOL=VALUE]...")
//usage:#define insmod_full_usage "\n\n"
//usage: "Load kernel module"
-//usage: IF_FEATURE_2_4_MODULES( "\n"
-//usage: "\n -f Force module to load into the wrong kernel version"
-//usage: "\n -k Make module autoclean-able"
-//usage: "\n -v Verbose"
-//usage: "\n -q Quiet"
-//usage: "\n -L Lock: prevent simultaneous loads"
-//usage: IF_FEATURE_INSMOD_LOAD_MAP(
-//usage: "\n -m Output load map to stdout"
-//usage: )
-//usage: "\n -x Don't export externs"
-//usage: )
//usage:#define rmmod_trivial_usage
-//usage: "[-wfa] [MODULE]..."
+//usage: "MODULE..."
//usage:#define rmmod_full_usage "\n\n"
-//usage: "Unload kernel modules\n"
-//usage: "\n -w Wait until the module is no longer used"
-//usage: "\n -f Force unload"
-//usage: "\n -a Remove all unused modules (recursively)"
-//usage:
-//usage:#define rmmod_example_usage
-//usage: "$ rmmod tulip\n"
+//usage: "Unload kernel modules"
//usage:#define modprobe_trivial_usage
-//usage: "[-qfwrsv] MODULE [SYMBOL=VALUE]..."
+//usage: "[-rq] MODULE" IF_FEATURE_CMDLINE_MODULE_OPTIONS(" [SYMBOL=VALUE]...")
//usage:#define modprobe_full_usage "\n\n"
-//usage: " -r Remove MODULE (stacks) or do autoclean"
+//usage: " -r Remove MODULE"
//usage: "\n -q Quiet"
-//usage: "\n -v Verbose"
-//usage: "\n -f Force"
-//usage: "\n -w Wait for unload"
-//usage: "\n -s Report via syslog instead of stderr"
//usage:#endif
int modprobe_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int modprobe_main(int argc UNUSED_PARAM, char **argv)
{
+#if ENABLE_MODPROBE || ENABLE_INSMOD || ENABLE_RMMOD
int exitcode;
+#endif
struct utsname uts;
- char applet0 = applet_name[0];
- IF_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(char *options;)
-
- /* are we lsmod? -> just dump /proc/modules */
- if ('l' == applet0) {
- xprint_and_close_file(xfopen_for_read("/proc/modules"));
- return EXIT_SUCCESS;
- }
+ IF_FEATURE_CMDLINE_MODULE_OPTIONS(char *options = NULL;)
INIT_G();
/* Prevent ugly corner cases with no modules at all */
modinfo = xzalloc(sizeof(modinfo[0]));
- if ('i' != applet0) { /* not insmod */
+ if ((MOD_APPLET_CNT == 2 && ENABLE_DEPMOD && ENABLE_MODPROBE)
+ || is_depmod || is_modprobe
+ ) {
/* Goto modules directory */
xchdir(CONFIG_DEFAULT_MODULES_DIR);
+ uname(&uts); /* never fails */
}
- uname(&uts); /* never fails */
/* depmod? */
- if ('d' == applet0) {
+ if (is_depmod) {
/* Supported:
* -n: print result to stdout
* -a: process all modules (default)
* -e: report any symbols which a module needs
* which are not supplied by other modules or the kernel
* -F FILE: System.map (symbols for -e)
- * -q, -r, -u: noop?
+ * -q, -r, -u: noop
* Not supported:
* -b BASEDIR: (TODO!) modules are in
* $BASEDIR/lib/modules/$VERSION
+ * -m: create legacy "modules.*map" files (deprecated; in
+ * kmod's depmod, prints a warning message and continues)
* -v: human readable deps to stdout
* -V: version (don't want to support it - people may depend
* on it as an indicator of "standard" depmod)
return !wrote_dep_bb_ok;
}
- /* insmod, modprobe, rmmod require at least one argument */
+#if ENABLE_MODPROBE || ENABLE_INSMOD || ENABLE_RMMOD
+ /* modprobe, insmod, rmmod require at least one argument */
opt_complementary = "-1";
/* only -q (quiet) and -r (rmmod),
* the rest are accepted and ignored (compat) */
getopt32(argv, "qrfsvwb");
argv += optind;
- /* are we rmmod? -> simulate modprobe -r */
- if ('r' == applet0) {
- option_mask32 |= OPT_r;
- }
-
- if ('i' != applet0) { /* not insmod */
+ if (is_modprobe) {
/* Goto $VERSION directory */
xchdir(uts.release);
}
-#if ENABLE_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
+ /* are we rmmod? -> simulate modprobe -r, but don't bother the flag if
+ * there're no other applets here */
+ if (is_rmmod) {
+ if (!ONLY_APPLET)
+ option_mask32 |= OPT_r;
+ } else if (!ENABLE_MODPROBE || !(option_mask32 & OPT_r)) {
+# if ENABLE_FEATURE_CMDLINE_MODULE_OPTIONS
/* If not rmmod/-r, parse possible module options given on command line.
* insmod/modprobe takes one module name, the rest are parameters. */
- options = NULL;
- if (!(option_mask32 & OPT_r)) {
char **arg = argv;
while (*++arg) {
/* Enclose options in quotes */
free(s);
*arg = NULL;
}
- }
-#else
- if (!(option_mask32 & OPT_r))
+# else
argv[1] = NULL;
-#endif
+# endif
+ }
- if ('i' == applet0) { /* insmod */
+ if (is_insmod) {
size_t len;
void *map;
if (!map)
bb_perror_msg_and_die("can't read '%s'", *argv);
if (init_module(map, len,
- IF_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(options ? options : "")
- IF_NOT_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE("")
+ (IF_FEATURE_CMDLINE_MODULE_OPTIONS(options ? options : ) "")
) != 0
) {
bb_error_msg_and_die("can't insert '%s': %s",
}
/* Try to load modprobe.dep.bb */
- if ('r' != applet0) { /* not rmmod */
+ if (!is_rmmod) {
load_dep_bb();
}
} while (*++argv);
if (ENABLE_FEATURE_CLEAN_UP) {
- IF_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(free(options);)
+ IF_FEATURE_CMDLINE_MODULE_OPTIONS(free(options);)
}
return exitcode;
+#endif /* MODPROBE || INSMOD || RMMOD */
}
+
+#endif /* MOD_APPLET_CNT > 0 */
projects / oweals / busybox.git / blobdiff