modprobe: add support for --show-depends
function old new delta modprobe_longopts - 16 +16 packed_usage 28018 28028 +10 modprobe_main 648 653 +5 do_modprobe 580 536 -44 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 2/1 up/down: 31/-44) Total: -13 bytes Signed-off-by: Serj Kalichev <serj.kalichev@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Serj Kalichev
Denys Vlasenko
parent
6088e138e1
commit
e4e911e712
@ -882,7 +882,6 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
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/* Prepend '-' to the first argument if required */
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opt_complementary = "--:" // first arg is options
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"tt:vv:" // count -t,-v
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"?:" // bail out with usage instead of error return
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"X::T::" // cumulative lists
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#if ENABLE_FEATURE_TAR_LONG_OPTIONS && ENABLE_FEATURE_TAR_FROM
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"\xff::" // cumulative lists for --exclude
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@ -72,19 +72,21 @@
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//usage: " from the command line\n"
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//usage:
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//usage:#define modprobe_trivial_usage
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//usage: "[-alrqvs"
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//usage: IF_FEATURE_MODPROBE_BLACKLIST("b")
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//usage: "] MODULE [symbol=value]..."
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//usage: "[-alrqvs" IF_FEATURE_MODPROBE_BLACKLIST("b") "]"
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//usage: IF_LONG_OPTS(" [--show-depends]") " MODULE [symbol=value]..."
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//usage:#define modprobe_full_usage "\n\n"
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//usage: "Options:"
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//usage: "\n -a Load multiple MODULEs"
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//usage: "\n -l List (MODULE is a pattern)"
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//usage: "\n -r Remove MODULE (stacks) or do autoclean"
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//usage: "\n -q Quiet"
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//usage: "\n -v Verbose"
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//usage: "\n -s Log to syslog"
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//usage: "\n -a Load multiple MODULEs"
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//usage: "\n -l List (MODULE is a pattern)"
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//usage: "\n -r Remove MODULE (stacks) or do autoclean"
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//usage: "\n -q Quiet"
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//usage: "\n -v Verbose"
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//usage: "\n -s Log to syslog"
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//usage: IF_FEATURE_MODPROBE_BLACKLIST(
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//usage: "\n -b Apply blacklist to module names too"
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//usage: "\n -b Apply blacklist to module names too"
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//usage: )
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//usage: IF_LONG_OPTS(
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//usage: "\n --show-depends Show dependencies"
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//usage: )
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//usage:#endif /* !ENABLE_MODPROBE_SMALL */
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@ -101,24 +103,35 @@
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* Older versions would only export the direct dependency list.
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*/
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/* Note that usage text doesn't document various 2.4 options
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* we pull in through INSMOD_OPTS define */
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#define MODPROBE_COMPLEMENTARY "q-v:v-q:l--ar:a--lr:r--al"
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#define MODPROBE_OPTS "alr" IF_FEATURE_MODPROBE_BLACKLIST("b")
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//#define MODPROBE_COMPLEMENTARY "q-v:v-q:l--acr:a--lr:r--al"
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#undef SD
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#if ENABLE_LONG_OPTS
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static const char modprobe_longopts[] ALIGN1 =
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"show-depends\0" No_argument "\xff"
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;
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# define SD "\xff"
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#else
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# define SD ""
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#endif
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#define MODPROBE_COMPLEMENTARY ("q-v:v-q:l--ar"SD":a--lr"SD":r--al"SD IF_LONG_OPTS(":\xff--arl"))
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//#define MODPROBE_OPTS "acd:lnrt:C:" IF_FEATURE_MODPROBE_BLACKLIST("b")
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//#define MODPROBE_COMPLEMENTARY "q-v:v-q:l--acr:a--lr:r--al"
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enum {
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MODPROBE_OPT_INSERT_ALL = (INSMOD_OPT_UNUSED << 0), /* a */
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//MODPROBE_OPT_DUMP_ONLY= (INSMOD_OPT_UNUSED << x), /* c */
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//MODPROBE_OPT_DIRNAME = (INSMOD_OPT_UNUSED << x), /* d */
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MODPROBE_OPT_LIST_ONLY = (INSMOD_OPT_UNUSED << 1), /* l */
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//MODPROBE_OPT_SHOW_ONLY= (INSMOD_OPT_UNUSED << x), /* n */
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MODPROBE_OPT_REMOVE = (INSMOD_OPT_UNUSED << 2), /* r */
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//MODPROBE_OPT_RESTRICT = (INSMOD_OPT_UNUSED << x), /* t */
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//MODPROBE_OPT_VERONLY = (INSMOD_OPT_UNUSED << x), /* V */
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//MODPROBE_OPT_CONFIGFILE=(INSMOD_OPT_UNUSED << x), /* C */
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MODPROBE_OPT_BLACKLIST = (INSMOD_OPT_UNUSED << 3) * ENABLE_FEATURE_MODPROBE_BLACKLIST,
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OPT_INSERT_ALL = (INSMOD_OPT_UNUSED << 0), /* a */
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//OPT_DUMP_ONLY = (INSMOD_OPT_UNUSED << x), /* c */
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//OPT_DIRNAME = (INSMOD_OPT_UNUSED << x), /* d */
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OPT_LIST_ONLY = (INSMOD_OPT_UNUSED << 1), /* l */
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//OPT_SHOW_ONLY = (INSMOD_OPT_UNUSED << x), /* n */
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OPT_REMOVE = (INSMOD_OPT_UNUSED << 2), /* r */
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//OPT_RESTRICT = (INSMOD_OPT_UNUSED << x), /* t */
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//OPT_VERONLY = (INSMOD_OPT_UNUSED << x), /* V */
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//OPT_CONFIGFILE =(INSMOD_OPT_UNUSED << x), /* C */
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OPT_BLACKLIST = (INSMOD_OPT_UNUSED << 3) * ENABLE_FEATURE_MODPROBE_BLACKLIST,
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OPTBIT_SHOW_DEPS = (3 + ENABLE_FEATURE_MODPROBE_BLACKLIST),
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OPT_SHOW_DEPS = (INSMOD_OPT_UNUSED << OPTBIT_SHOW_DEPS) * ENABLE_LONG_OPTS,
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};
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#define MODULE_FLAG_LOADED 0x0001
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@ -145,9 +158,13 @@ struct globals {
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int num_unresolved_deps;
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/* bool. "Did we have 'symbol:FOO' requested on cmdline?" */
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smallint need_symbols;
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struct utsname uts;
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} FIX_ALIASING;
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#define G (*(struct globals*)&bb_common_bufsiz1)
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#define INIT_G() do { } while (0)
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struct BUG_G_too_big {
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char BUG_G_too_big[sizeof(G) <= COMMON_BUFSIZE ? 1 : -1];
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};
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static int read_config(const char *path);
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@ -202,7 +219,7 @@ static void add_probe(const char *name)
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struct module_entry *m;
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m = get_or_add_modentry(name);
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if (!(option_mask32 & MODPROBE_OPT_REMOVE)
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if (!(option_mask32 & (OPT_REMOVE | OPT_SHOW_DEPS))
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&& (m->flags & MODULE_FLAG_LOADED)
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) {
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DBG("skipping %s, it is already loaded", name);
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@ -366,7 +383,7 @@ static int do_modprobe(struct module_entry *m)
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}
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DBG("do_modprob'ing %s", m->modname);
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if (!(option_mask32 & MODPROBE_OPT_REMOVE))
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if (!(option_mask32 & OPT_REMOVE))
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m->deps = llist_rev(m->deps);
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for (l = m->deps; l != NULL; l = l->link)
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@ -379,7 +396,13 @@ static int do_modprobe(struct module_entry *m)
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fn = llist_pop(&m->deps); /* we leak it */
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m2 = get_or_add_modentry(fn);
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if (option_mask32 & MODPROBE_OPT_REMOVE) {
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if (option_mask32 & OPT_SHOW_DEPS) {
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printf("insmod %s/%s/%s\n", CONFIG_DEFAULT_MODULES_DIR,
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G.uts.release, fn);
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continue;
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}
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if (option_mask32 & OPT_REMOVE) {
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/* modprobe -r */
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if (m2->flags & MODULE_FLAG_LOADED) {
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rc = bb_delete_module(m2->modname, O_EXCL);
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@ -456,7 +479,7 @@ static void load_modules_dep(void)
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/* Optimization... */
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if ((m->flags & MODULE_FLAG_LOADED)
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&& !(option_mask32 & MODPROBE_OPT_REMOVE)
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&& !(option_mask32 & (OPT_REMOVE | OPT_SHOW_DEPS))
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) {
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DBG("skip deps of %s, it's already loaded", tokens[0]);
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continue;
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@ -477,21 +500,23 @@ static void load_modules_dep(void)
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int modprobe_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int modprobe_main(int argc UNUSED_PARAM, char **argv)
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{
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struct utsname uts;
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int rc;
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unsigned opt;
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struct module_entry *me;
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INIT_G();
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IF_LONG_OPTS(applet_long_options = modprobe_longopts;)
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opt_complementary = MODPROBE_COMPLEMENTARY;
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opt = getopt32(argv, INSMOD_OPTS MODPROBE_OPTS INSMOD_ARGS);
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argv += optind;
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/* Goto modules location */
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xchdir(CONFIG_DEFAULT_MODULES_DIR);
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uname(&uts);
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xchdir(uts.release);
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uname(&G.uts);
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xchdir(G.uts.release);
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if (opt & MODPROBE_OPT_LIST_ONLY) {
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if (opt & OPT_LIST_ONLY) {
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char name[MODULE_NAME_LEN];
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char *colon, *tokens[2];
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parser_t *p = config_open2(CONFIG_DEFAULT_DEPMOD_FILE, xfopen_for_read);
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@ -521,7 +546,7 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv)
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logmode = LOGMODE_SYSLOG;
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if (!argv[0]) {
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if (opt & MODPROBE_OPT_REMOVE) {
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if (opt & OPT_REMOVE) {
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/* "modprobe -r" (w/o params).
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* "If name is NULL, all unused modules marked
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* autoclean will be removed".
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@ -541,7 +566,7 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv)
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config_close(parser);
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}
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if (opt & (MODPROBE_OPT_INSERT_ALL | MODPROBE_OPT_REMOVE)) {
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if (opt & (OPT_INSERT_ALL | OPT_REMOVE)) {
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/* Each argument is a module name */
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do {
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DBG("adding module %s", *argv);
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@ -575,7 +600,7 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv)
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/* This is not an alias. Literal names are blacklisted
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* only if '-b' is given.
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*/
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if (!(opt & MODPROBE_OPT_BLACKLIST)
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if (!(opt & OPT_BLACKLIST)
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|| !(me->flags & MODULE_FLAG_BLACKLISTED)
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) {
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rc |= do_modprobe(me);
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@ -592,7 +617,7 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv)
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m2 = get_or_add_modentry(realname);
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if (!(m2->flags & MODULE_FLAG_BLACKLISTED)
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&& (!(m2->flags & MODULE_FLAG_LOADED)
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|| (opt & MODPROBE_OPT_REMOVE))
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|| (opt & (OPT_REMOVE | OPT_SHOW_DEPS)))
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) {
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//TODO: we can pass "me" as 2nd param to do_modprobe,
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//and make do_modprobe emit more meaningful error messages
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