[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/modutils/modprobe-small.c b/ap/app/busybox/src/modutils/modprobe-small.c
new file mode 100644
index 0000000..5b78363
--- /dev/null
+++ b/ap/app/busybox/src/modutils/modprobe-small.c
@@ -0,0 +1,883 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * simplified modprobe
+ *
+ * Copyright (c) 2008 Vladimir Dronnikov
+ * Copyright (c) 2008 Bernhard Reutner-Fischer (initial depmod code)
+ *
+ * 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, modprobe))
+//applet:IF_MODPROBE_SMALL(APPLET_ODDNAME(insmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, modprobe))
+//applet:IF_MODPROBE_SMALL(APPLET_ODDNAME(lsmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, modprobe))
+//applet:IF_MODPROBE_SMALL(APPLET_ODDNAME(rmmod, modprobe, BB_DIR_SBIN, BB_SUID_DROP, modprobe))
+
+#include "libbb.h"
+/* After libbb.h, since it needs sys/types.h on some systems */
+#include <sys/utsname.h> /* uname() */
+#include <fnmatch.h>
+
+extern int init_module(void *module, unsigned long len, const char *options);
+extern int delete_module(const char *module, unsigned flags);
+extern int query_module(const char *name, int which, void *buf, size_t bufsize, size_t *ret);
+
+
+#if 1
+# define dbg1_error_msg(...) ((void)0)
+# define dbg2_error_msg(...) ((void)0)
+#else
+# define dbg1_error_msg(...) bb_error_msg(__VA_ARGS__)
+# define dbg2_error_msg(...) bb_error_msg(__VA_ARGS__)
+#endif
+
+#define DEPFILE_BB CONFIG_DEFAULT_DEPMOD_FILE".bb"
+
+enum {
+ OPT_q = (1 << 0), /* be quiet */
+ OPT_r = (1 << 1), /* module removal instead of loading */
+};
+
+typedef struct module_info {
+ char *pathname;
+ char *aliases;
+ char *deps;
+} module_info;
+
+/*
+ * GLOBALS
+ */
+struct globals {
+ module_info *modinfo;
+ char *module_load_options;
+ smallint dep_bb_seen;
+ smallint wrote_dep_bb_ok;
+ unsigned module_count;
+ int module_found_idx;
+ unsigned stringbuf_idx;
+ unsigned stringbuf_size;
+ char *stringbuf; /* some modules have lots of stuff */
+ /* for example, drivers/media/video/saa7134/saa7134.ko */
+ /* therefore having a fixed biggish buffer is not wise */
+};
+#define G (*ptr_to_globals)
+#define modinfo (G.modinfo )
+#define dep_bb_seen (G.dep_bb_seen )
+#define wrote_dep_bb_ok (G.wrote_dep_bb_ok )
+#define module_count (G.module_count )
+#define module_found_idx (G.module_found_idx )
+#define module_load_options (G.module_load_options)
+#define stringbuf_idx (G.stringbuf_idx )
+#define stringbuf_size (G.stringbuf_size )
+#define stringbuf (G.stringbuf )
+#define INIT_G() do { \
+ SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
+} while (0)
+
+static void append(const char *s)
+{
+ unsigned len = strlen(s);
+ if (stringbuf_idx + len + 15 > stringbuf_size) {
+ stringbuf_size = stringbuf_idx + len + 127;
+ dbg2_error_msg("grow stringbuf to %u", stringbuf_size);
+ stringbuf = xrealloc(stringbuf, stringbuf_size);
+ }
+ memcpy(stringbuf + stringbuf_idx, s, len);
+ stringbuf_idx += len;
+}
+
+static void appendc(char c)
+{
+ /* We appendc() only after append(), + 15 trick in append()
+ * makes it unnecessary to check for overflow here */
+ stringbuf[stringbuf_idx++] = c;
+}
+
+static void bksp(void)
+{
+ if (stringbuf_idx)
+ stringbuf_idx--;
+}
+
+static void reset_stringbuf(void)
+{
+ stringbuf_idx = 0;
+}
+
+static char* copy_stringbuf(void)
+{
+ char *copy = xzalloc(stringbuf_idx + 1); /* terminating NUL */
+ return memcpy(copy, stringbuf, stringbuf_idx);
+}
+
+static char* find_keyword(char *ptr, size_t len, const char *word)
+{
+ int wlen;
+
+ if (!ptr) /* happens if xmalloc_open_zipped_read_close cannot read it */
+ return NULL;
+
+ wlen = strlen(word);
+ len -= wlen - 1;
+ while ((ssize_t)len > 0) {
+ char *old = ptr;
+ /* search for the first char in word */
+ ptr = memchr(ptr, *word, len);
+ if (ptr == NULL) /* no occurance left, done */
+ break;
+ if (strncmp(ptr, word, wlen) == 0)
+ return ptr + wlen; /* found, return ptr past it */
+ ++ptr;
+ len -= (ptr - old);
+ }
+ return NULL;
+}
+
+static void replace(char *s, char what, char with)
+{
+ while (*s) {
+ if (what == *s)
+ *s = with;
+ ++s;
+ }
+}
+
+/* Take "word word", return malloced "word",NUL,"word",NUL,NUL */
+static char* str_2_list(const char *str)
+{
+ int len = strlen(str) + 1;
+ char *dst = xmalloc(len + 1);
+
+ dst[len] = '\0';
+ memcpy(dst, str, len);
+//TODO: protect against 2+ spaces: "word word"
+ replace(dst, ' ', '\0');
+ return dst;
+}
+
+/* We use error numbers in a loose translation... */
+static const char *moderror(int err)
+{
+ switch (err) {
+ case ENOEXEC:
+ return "invalid module format";
+ case ENOENT:
+ return "unknown symbol in module or invalid parameter";
+ case ESRCH:
+ return "module has wrong symbol version";
+ case EINVAL: /* "invalid parameter" */
+ return "unknown symbol in module or invalid parameter"
+ + sizeof("unknown symbol in module or");
+ default:
+ return strerror(err);
+ }
+}
+
+static int load_module(const char *fname, const char *options)
+{
+#if 1
+ int r;
+ size_t len = MAXINT(ssize_t);
+ char *module_image;
+ dbg1_error_msg("load_module('%s','%s')", fname, options);
+
+ module_image = xmalloc_open_zipped_read_close(fname, &len);
+ r = (!module_image || init_module(module_image, len, options ? options : "") != 0);
+ free(module_image);
+ dbg1_error_msg("load_module:%d", r);
+ return r; /* 0 = success */
+#else
+ /* For testing */
+ dbg1_error_msg("load_module('%s','%s')", fname, options);
+ return 1;
+#endif
+}
+
+static void parse_module(module_info *info, const char *pathname)
+{
+ char *module_image;
+ char *ptr;
+ size_t len;
+ size_t pos;
+ dbg1_error_msg("parse_module('%s')", pathname);
+
+ /* Read (possibly compressed) module */
+ len = 64 * 1024 * 1024; /* 64 Mb at most */
+ module_image = xmalloc_open_zipped_read_close(pathname, &len);
+ /* module_image == NULL is ok here, find_keyword handles it */
+//TODO: optimize redundant module body reads
+
+ /* "alias1 symbol:sym1 alias2 symbol:sym2" */
+ reset_stringbuf();
+ pos = 0;
+ while (1) {
+ ptr = find_keyword(module_image + pos, len - pos, "alias=");
+ if (!ptr) {
+ ptr = find_keyword(module_image + pos, len - pos, "__ksymtab_");
+ if (!ptr)
+ break;
+ /* DOCME: __ksymtab_gpl and __ksymtab_strings occur
+ * in many modules. What do they mean? */
+ if (strcmp(ptr, "gpl") == 0 || strcmp(ptr, "strings") == 0)
+ goto skip;
+ dbg2_error_msg("alias:'symbol:%s'", ptr);
+ append("symbol:");
+ } else {
+ dbg2_error_msg("alias:'%s'", ptr);
+ }
+ append(ptr);
+ appendc(' ');
+ skip:
+ pos = (ptr - module_image);
+ }
+ bksp(); /* remove last ' ' */
+ info->aliases = copy_stringbuf();
+ replace(info->aliases, '-', '_');
+
+ /* "dependency1 depandency2" */
+ reset_stringbuf();
+ ptr = find_keyword(module_image, len, "depends=");
+ if (ptr && *ptr) {
+ replace(ptr, ',', ' ');
+ replace(ptr, '-', '_');
+ dbg2_error_msg("dep:'%s'", ptr);
+ append(ptr);
+ }
+ info->deps = copy_stringbuf();
+
+ free(module_image);
+}
+
+static int pathname_matches_modname(const char *pathname, const char *modname)
+{
+ const char *fname = bb_get_last_path_component_nostrip(pathname);
+ const char *suffix = strrstr(fname, ".ko");
+//TODO: can do without malloc?
+ char *name = xstrndup(fname, suffix - fname);
+ int r;
+ replace(name, '-', '_');
+ r = (strcmp(name, modname) == 0);
+ free(name);
+ return r;
+}
+
+static FAST_FUNC int fileAction(const char *pathname,
+ struct stat *sb UNUSED_PARAM,
+ void *modname_to_match,
+ int depth UNUSED_PARAM)
+{
+ int cur;
+ const char *fname;
+
+ pathname += 2; /* skip "./" */
+ fname = bb_get_last_path_component_nostrip(pathname);
+ if (!strrstr(fname, ".ko")) {
+ dbg1_error_msg("'%s' is not a module", pathname);
+ return TRUE; /* not a module, continue search */
+ }
+
+ cur = module_count++;
+ modinfo = xrealloc_vector(modinfo, 12, cur);
+ modinfo[cur].pathname = xstrdup(pathname);
+ /*modinfo[cur].aliases = NULL; - xrealloc_vector did it */
+ /*modinfo[cur+1].pathname = NULL;*/
+
+ if (!pathname_matches_modname(fname, modname_to_match)) {
+ dbg1_error_msg("'%s' module name doesn't match", pathname);
+ return TRUE; /* module name doesn't match, continue search */
+ }
+
+ dbg1_error_msg("'%s' module name matches", pathname);
+ module_found_idx = cur;
+ parse_module(&modinfo[cur], pathname);
+
+ if (!(option_mask32 & OPT_r)) {
+ 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. */
+ exit(EXIT_SUCCESS);
+ }
+ }
+
+ return TRUE;
+}
+
+static int load_dep_bb(void)
+{
+ char *line;
+ FILE *fp = fopen_for_read(DEPFILE_BB);
+
+ if (!fp)
+ return 0;
+
+ dep_bb_seen = 1;
+ dbg1_error_msg("loading "DEPFILE_BB);
+
+ /* Why? There is a rare scenario: we did not find modprobe.dep.bb,
+ * we scanned the dir and found no module by name, then we search
+ * for alias (full scan), and we decided to generate modprobe.dep.bb.
+ * But we see modprobe.dep.bb.new! Other modprobe is at work!
+ * We wait and other modprobe renames it to modprobe.dep.bb.
+ * Now we can use it.
+ * But we already have modinfo[] filled, and "module_count = 0"
+ * makes us start anew. Yes, we leak modinfo[].xxx pointers -
+ * there is not much of data there anyway. */
+ module_count = 0;
+ memset(&modinfo[0], 0, sizeof(modinfo[0]));
+
+ while ((line = xmalloc_fgetline(fp)) != NULL) {
+ char* space;
+ char* linebuf;
+ int cur;
+
+ if (!line[0]) {
+ free(line);
+ continue;
+ }
+ space = strchrnul(line, ' ');
+ cur = module_count++;
+ modinfo = xrealloc_vector(modinfo, 12, cur);
+ /*modinfo[cur+1].pathname = NULL; - xrealloc_vector did it */
+ modinfo[cur].pathname = line; /* we take ownership of malloced block here */
+ if (*space)
+ *space++ = '\0';
+ modinfo[cur].aliases = space;
+ linebuf = xmalloc_fgetline(fp);
+ modinfo[cur].deps = linebuf ? linebuf : xzalloc(1);
+ if (modinfo[cur].deps[0]) {
+ /* deps are not "", so next line must be empty */
+ line = xmalloc_fgetline(fp);
+ /* Refuse to work with damaged config file */
+ if (line && line[0])
+ bb_error_msg_and_die("error in %s at '%s'", DEPFILE_BB, line);
+ free(line);
+ }
+ }
+ return 1;
+}
+
+static int start_dep_bb_writeout(void)
+{
+ int fd;
+
+ /* depmod -n: write result to stdout */
+ if (applet_name[0] == 'd' && (option_mask32 & 1))
+ return STDOUT_FILENO;
+
+ fd = open(DEPFILE_BB".new", O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0644);
+ if (fd < 0) {
+ if (errno == EEXIST) {
+ int count = 5 * 20;
+ dbg1_error_msg(DEPFILE_BB".new exists, waiting for "DEPFILE_BB);
+ while (1) {
+ usleep(1000*1000 / 20);
+ if (load_dep_bb()) {
+ dbg1_error_msg(DEPFILE_BB" appeared");
+ return -2; /* magic number */
+ }
+ if (!--count)
+ break;
+ }
+ bb_error_msg("deleting stale %s", DEPFILE_BB".new");
+ fd = open_or_warn(DEPFILE_BB".new", O_WRONLY | O_CREAT | O_TRUNC);
+ }
+ }
+ dbg1_error_msg("opened "DEPFILE_BB".new:%d", fd);
+ return fd;
+}
+
+static void write_out_dep_bb(int fd)
+{
+ int i;
+ FILE *fp;
+
+ /* We want good error reporting. fdprintf is not good enough. */
+ fp = xfdopen_for_write(fd);
+ i = 0;
+ while (modinfo[i].pathname) {
+ fprintf(fp, "%s%s%s\n" "%s%s\n",
+ modinfo[i].pathname, modinfo[i].aliases[0] ? " " : "", modinfo[i].aliases,
+ modinfo[i].deps, modinfo[i].deps[0] ? "\n" : "");
+ i++;
+ }
+ /* Badly formatted depfile is a no-no. Be paranoid. */
+ errno = 0;
+ if (ferror(fp) | fclose(fp)) /* | instead of || is intended */
+ goto err;
+
+ if (fd == STDOUT_FILENO) /* it was depmod -n */
+ goto ok;
+
+ if (rename(DEPFILE_BB".new", DEPFILE_BB) != 0) {
+ err:
+ bb_perror_msg("can't create '%s'", DEPFILE_BB);
+ unlink(DEPFILE_BB".new");
+ } else {
+ ok:
+ wrote_dep_bb_ok = 1;
+ dbg1_error_msg("created "DEPFILE_BB);
+ }
+}
+
+static module_info* find_alias(const char *alias)
+{
+ int i;
+ int dep_bb_fd;
+ module_info *result;
+ dbg1_error_msg("find_alias('%s')", alias);
+
+ try_again:
+ /* First try to find by name (cheaper) */
+ i = 0;
+ while (modinfo[i].pathname) {
+ if (pathname_matches_modname(modinfo[i].pathname, alias)) {
+ dbg1_error_msg("found '%s' in module '%s'",
+ alias, modinfo[i].pathname);
+ if (!modinfo[i].aliases) {
+ parse_module(&modinfo[i], modinfo[i].pathname);
+ }
+ return &modinfo[i];
+ }
+ i++;
+ }
+
+ /* Ok, we definitely have to scan module bodies. This is a good
+ * moment to generate modprobe.dep.bb, if it does not exist yet */
+ dep_bb_fd = dep_bb_seen ? -1 : start_dep_bb_writeout();
+ if (dep_bb_fd == -2) /* modprobe.dep.bb appeared? */
+ goto try_again;
+
+ /* Scan all module bodies, extract modinfo (it contains aliases) */
+ i = 0;
+ result = NULL;
+ while (modinfo[i].pathname) {
+ char *desc, *s;
+ if (!modinfo[i].aliases) {
+ parse_module(&modinfo[i], modinfo[i].pathname);
+ }
+ if (result) {
+ i++;
+ continue;
+ }
+ /* "alias1 symbol:sym1 alias2 symbol:sym2" */
+ desc = str_2_list(modinfo[i].aliases);
+ /* Does matching substring exist? */
+ for (s = desc; *s; s += strlen(s) + 1) {
+ /* Aliases in module bodies can be defined with
+ * shell patterns. Example:
+ * "pci:v000010DEd000000D9sv*sd*bc*sc*i*".
+ * Plain strcmp() won't catch that */
+ if (fnmatch(s, alias, 0) == 0) {
+ dbg1_error_msg("found alias '%s' in module '%s'",
+ alias, modinfo[i].pathname);
+ result = &modinfo[i];
+ break;
+ }
+ }
+ free(desc);
+ if (result && dep_bb_fd < 0)
+ return result;
+ i++;
+ }
+
+ /* Create module.dep.bb if needed */
+ if (dep_bb_fd >= 0) {
+ write_out_dep_bb(dep_bb_fd);
+ }
+
+ dbg1_error_msg("find_alias '%s' returns %p", alias, result);
+ return result;
+}
+
+#if ENABLE_FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED
+// TODO: open only once, invent config_rewind()
+static int already_loaded(const char *name)
+{
+ int ret = 0;
+ char *s;
+ parser_t *parser = config_open2("/proc/modules", xfopen_for_read);
+ while (config_read(parser, &s, 1, 1, "# \t", PARSE_NORMAL & ~PARSE_GREEDY)) {
+ if (strcmp(s, name) == 0) {
+ ret = 1;
+ break;
+ }
+ }
+ config_close(parser);
+ return ret;
+}
+#else
+#define already_loaded(name) is_rmmod
+#endif
+
+/*
+ * Given modules definition and module name (or alias, or symbol)
+ * load/remove the module respecting dependencies.
+ * 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
+#define process_module(a,b) process_module(a)
+#define cmdline_options ""
+#endif
+static void process_module(char *name, const char *cmdline_options)
+{
+ char *s, *deps, *options;
+ module_info *info;
+ int is_rmmod = (option_mask32 & OPT_r) != 0;
+ dbg1_error_msg("process_module('%s','%s')", name, cmdline_options);
+
+ replace(name, '-', '_');
+
+ dbg1_error_msg("already_loaded:%d is_rmmod:%d", already_loaded(name), is_rmmod);
+ if (already_loaded(name) != is_rmmod) {
+ dbg1_error_msg("nothing to do for '%s'", name);
+ return;
+ }
+
+ options = NULL;
+ if (!is_rmmod) {
+ char *opt_filename = xasprintf("/etc/modules/%s", name);
+ options = xmalloc_open_read_close(opt_filename, NULL);
+ if (options)
+ replace(options, '\n', ' ');
+#if ENABLE_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
+ if (cmdline_options) {
+ /* NB: cmdline_options always have one leading ' '
+ * (see main()), we remove it here */
+ char *op = xasprintf(options ? "%s %s" : "%s %s" + 3,
+ cmdline_options + 1, options);
+ free(options);
+ options = op;
+ }
+#endif
+ free(opt_filename);
+ module_load_options = options;
+ dbg1_error_msg("process_module('%s'): options:'%s'", name, options);
+ }
+
+ if (!module_count) {
+ /* Scan module directory. This is done only once.
+ * It will attempt module load, and will exit(EXIT_SUCCESS)
+ * on success. */
+ module_found_idx = -1;
+ recursive_action(".",
+ ACTION_RECURSE, /* flags */
+ fileAction, /* file action */
+ NULL, /* dir action */
+ name, /* user data */
+ 0); /* depth */
+ dbg1_error_msg("dirscan complete");
+ /* Module was not found, or load failed, or is_rmmod */
+ if (module_found_idx >= 0) { /* module was found */
+ info = &modinfo[module_found_idx];
+ } else { /* search for alias, not a plain module name */
+ info = find_alias(name);
+ }
+ } else {
+ info = find_alias(name);
+ }
+
+// Problem here: there can be more than one module
+// for the given alias. For example,
+// "pci:v00008086d00007010sv00000000sd00000000bc01sc01i80" matches
+// ata_piix because it has an alias "pci:v00008086d00007010sv*sd*bc*sc*i*"
+// and ata_generic, it has an alias "alias=pci:v*d*sv*sd*bc01sc01i*"
+// Standard modprobe would load them both.
+// In this code, find_alias() returns only the first matching module.
+
+ /* rmmod? unload it by name */
+ if (is_rmmod) {
+ if (delete_module(name, O_NONBLOCK | O_EXCL) != 0) {
+ if (!(option_mask32 & OPT_q))
+ bb_perror_msg("remove '%s'", name);
+ goto ret;
+ }
+
+ if (applet_name[0] == 'r') {
+ /* rmmod: do not remove dependencies, exit */
+ goto ret;
+ }
+
+ /* modprobe -r: we do not stop here -
+ * continue to unload modules on which the module depends:
+ * "-r --remove: option causes modprobe to remove a module.
+ * If the modules it depends on are also unused, modprobe
+ * will try to remove them, too."
+ */
+ }
+
+ if (!info) {
+ /* both dirscan and find_alias found nothing */
+ if (!is_rmmod && applet_name[0] != 'd') /* 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?
+ goto ret;
+ }
+
+ /* Iterate thru dependencies, trying to (un)load them */
+ deps = str_2_list(info->deps);
+ for (s = deps; *s; s += strlen(s) + 1) {
+ //if (strcmp(name, s) != 0) // N.B. do loops exist?
+ dbg1_error_msg("recurse on dep '%s'", s);
+ process_module(s, NULL);
+ dbg1_error_msg("recurse on dep '%s' done", s);
+ }
+ free(deps);
+
+ /* modprobe -> load it */
+ if (!is_rmmod) {
+ if (!options || strstr(options, "blacklist") == NULL) {
+ errno = 0;
+ if (load_module(info->pathname, options) != 0) {
+ if (EEXIST != errno) {
+ bb_error_msg("'%s': %s",
+ info->pathname,
+ moderror(errno));
+ } else {
+ dbg1_error_msg("'%s': %s",
+ info->pathname,
+ moderror(errno));
+ }
+ }
+ } else {
+ dbg1_error_msg("'%s': blacklisted", info->pathname);
+ }
+ }
+ ret:
+ free(options);
+//TODO: return load attempt result from process_module.
+//If dep didn't load ok, continuing makes little sense.
+}
+#undef cmdline_options
+
+
+/* For reference, module-init-tools v3.4 options:
+
+# insmod
+Usage: insmod filename [args]
+
+# rmmod --help
+Usage: rmmod [-fhswvV] modulename ...
+ -f (or --force) forces a module unload, and may crash your
+ machine. This requires the Forced Module Removal option
+ when the kernel was compiled.
+ -h (or --help) prints this help text
+ -s (or --syslog) says use syslog, not stderr
+ -v (or --verbose) enables more messages
+ -V (or --version) prints the version code
+ -w (or --wait) begins module removal even if it is used
+ and will stop new users from accessing the module (so it
+ should eventually fall to zero).
+
+# modprobe
+Usage: modprobe [-v] [-V] [-C config-file] [-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]
+ [-b basedirectory] [forced_version]
+depmod [-n -e -v -q -r -u] [-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
+ -V, --version Print the release version
+ -v, --verbose Enable verbose mode
+ -h, --help Print this usage message
+The following options are useful for people managing distributions:
+ -b basedirectory
+ --basedir basedirectory
+ Use an image of a module tree
+ -F kernelsyms
+ --filesyms kernelsyms
+ Use the file instead of the current kernel symbols
+*/
+
+//usage:#if ENABLE_MODPROBE_SMALL
+
+//// Note: currently, help system shows modprobe --help text for all aliased cmds
+//// (see APPLET_ODDNAME macro definition).
+//// All other help texts defined below are not used. FIXME?
+
+//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 insmod_trivial_usage
+//usage: IF_FEATURE_2_4_MODULES("[OPTIONS] MODULE ")
+//usage: IF_NOT_FEATURE_2_4_MODULES("FILE ")
+//usage: "[SYMBOL=VALUE]..."
+//usage:#define insmod_full_usage "\n\n"
+//usage: "Load the specified kernel modules into the kernel"
+//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:#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:#define modprobe_trivial_usage
+//usage: "[-qfwrsv] MODULE [symbol=value]..."
+//usage:#define modprobe_full_usage "\n\n"
+//usage: " -r Remove MODULE (stacks) or do autoclean"
+//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)
+{
+ 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;
+ }
+
+ INIT_G();
+
+ /* Prevent ugly corner cases with no modules at all */
+ modinfo = xzalloc(sizeof(modinfo[0]));
+
+ if ('i' != applet0) { /* not insmod */
+ /* Goto modules directory */
+ xchdir(CONFIG_DEFAULT_MODULES_DIR);
+ }
+ uname(&uts); /* never fails */
+
+ /* depmod? */
+ if ('d' == applet0) {
+ /* Supported:
+ * -n: print result to stdout
+ * -a: process all modules (default)
+ * optional VERSION parameter
+ * Ignored:
+ * -A: do work only if a module is newer than depfile
+ * -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?
+ * Not supported:
+ * -b BASEDIR: (TODO!) modules are in
+ * $BASEDIR/lib/modules/$VERSION
+ * -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)
+ * -h: help (well duh)
+ * module1.o module2.o parameters (just ignored for now)
+ */
+ getopt32(argv, "na" "AeF:qru" /* "b:vV", NULL */, NULL);
+ argv += optind;
+ /* if (argv[0] && argv[1]) bb_show_usage(); */
+ /* Goto $VERSION directory */
+ xchdir(argv[0] ? argv[0] : uts.release);
+ /* Force full module scan by asking to find a bogus module.
+ * This will generate modules.dep.bb as a side effect. */
+ process_module((char*)"/", NULL);
+ return !wrote_dep_bb_ok;
+ }
+
+ /* insmod, modprobe, 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 */
+ /* Goto $VERSION directory */
+ xchdir(uts.release);
+ }
+
+#if ENABLE_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
+ /* If not rmmod, parse possible module options given on command line.
+ * insmod/modprobe takes one module name, the rest are parameters. */
+ options = NULL;
+ if ('r' != applet0) {
+ char **arg = argv;
+ while (*++arg) {
+ /* Enclose options in quotes */
+ char *s = options;
+ options = xasprintf("%s \"%s\"", s ? s : "", *arg);
+ free(s);
+ *arg = NULL;
+ }
+ }
+#else
+ if ('r' != applet0)
+ argv[1] = NULL;
+#endif
+
+ if ('i' == applet0) { /* insmod */
+ size_t len;
+ void *map;
+
+ len = MAXINT(ssize_t);
+ map = xmalloc_open_zipped_read_close(*argv, &len);
+ 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("")
+ ) != 0
+ ) {
+ bb_error_msg_and_die("can't insert '%s': %s",
+ *argv, moderror(errno));
+ }
+ return 0;
+ }
+
+ /* Try to load modprobe.dep.bb */
+ load_dep_bb();
+
+ /* Load/remove modules.
+ * Only rmmod loops here, modprobe has only argv[0] */
+ do {
+ process_module(*argv, options);
+ } while (*++argv);
+
+ if (ENABLE_FEATURE_CLEAN_UP) {
+ IF_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(free(options);)
+ }
+ return EXIT_SUCCESS;
+}