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modprobe: add -D option (synonym of --show-depends)
The modern module-init-tools 3.12 has "-D" option and it works. The --show-depends and -a options can be used together due to upstream modprobe behaviour. function old new delta do_modprobe 536 579 +43 packed_usage 28035 28042 +7 modprobe_main 653 657 +4 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/0 up/down: 54/0) Total: 54 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
260fb551ff
commit
8578196b76
@ -10,6 +10,20 @@
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//applet:IF_MODPROBE(APPLET(modprobe, _BB_DIR_SBIN, _BB_SUID_DROP))
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#include "libbb.h"
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#include "modutils.h"
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#include <sys/utsname.h>
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#include <fnmatch.h>
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//#define DBG(fmt, ...) bb_error_msg("%s: " fmt, __func__, ## __VA_ARGS__)
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#define DBG(...) ((void)0)
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/* Note that unlike older versions of modules.dep/depmod (busybox and m-i-t),
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* we expect the full dependency list to be specified in modules.dep.
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* Older versions would only export the direct dependency list.
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*/
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//usage:#if !ENABLE_MODPROBE_SMALL
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//usage:#define modprobe_notes_usage
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//usage: "modprobe can (un)load a stack of modules, passing each module options (when\n"
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@ -72,8 +86,8 @@
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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" IF_FEATURE_MODPROBE_BLACKLIST("b") "]"
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//usage: IF_LONG_OPTS(" [--show-depends]") " MODULE [symbol=value]..."
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//usage: "[-alrqvsD" IF_FEATURE_MODPROBE_BLACKLIST("b") "]"
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//usage: " 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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@ -82,41 +96,17 @@
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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 -D Show dependencies"
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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: )
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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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#include "libbb.h"
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#include "modutils.h"
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#include <sys/utsname.h>
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#include <fnmatch.h>
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//#define DBG(fmt, ...) bb_error_msg("%s: " fmt, __func__, ## __VA_ARGS__)
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#define DBG(...) ((void)0)
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/* Note that unlike older versions of modules.dep/depmod (busybox and m-i-t),
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* we expect the full dependency list to be specified in modules.dep.
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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_OPTS "alr" IF_FEATURE_MODPROBE_BLACKLIST("b")
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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 "alrD" IF_FEATURE_MODPROBE_BLACKLIST("b")
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/* -a and -D _are_ in fact compatible */
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#define MODPROBE_COMPLEMENTARY ("q-v:v-q:l--arD:r--alD:a--lr:D--rl")
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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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@ -129,10 +119,27 @@ enum {
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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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OPT_SHOW_DEPS = (INSMOD_OPT_UNUSED << 3), /* D */
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OPT_BLACKLIST = (INSMOD_OPT_UNUSED << 4) * ENABLE_FEATURE_MODPROBE_BLACKLIST,
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};
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#if ENABLE_LONG_OPTS
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static const char modprobe_longopts[] ALIGN1 =
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/* nobody asked for long opts (yet) */
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// "all\0" No_argument "a"
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// "list\0" No_argument "l"
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// "remove\0" No_argument "r"
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// "quiet\0" No_argument "q"
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// "verbose\0" No_argument "v"
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// "syslog\0" No_argument "s"
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/* module-init-tools 3.11.1 has only long opt --show-depends
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* but no short -D, we provide long opt for scripts which
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* were written for 3.11.1: */
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"show-depends\0" No_argument "D"
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// IF_FEATURE_MODPROBE_BLACKLIST(
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// "use-blacklist\0" No_argument "b"
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// )
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;
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#endif
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#define MODULE_FLAG_LOADED 0x0001
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#define MODULE_FLAG_NEED_DEPS 0x0002
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@ -370,8 +377,6 @@ static char *parse_and_add_kcmdline_module_options(char *options, const char *mo
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*/
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static int do_modprobe(struct module_entry *m)
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{
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struct module_entry *m2 = m2; /* for compiler */
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char *fn, *options;
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int rc, first;
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llist_t *l;
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@ -392,16 +397,13 @@ static int do_modprobe(struct module_entry *m)
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first = 1;
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rc = 0;
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while (m->deps) {
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struct module_entry *m2;
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char *fn, *options;
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rc = 0;
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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 & 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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@ -422,16 +424,27 @@ static int do_modprobe(struct module_entry *m)
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continue;
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}
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if (m2->flags & MODULE_FLAG_LOADED) {
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DBG("%s is already loaded, skipping", fn);
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continue;
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}
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options = m2->options;
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m2->options = NULL;
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options = parse_and_add_kcmdline_module_options(options, m2->modname);
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if (m == m2)
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options = gather_options_str(options, G.cmdline_mopts);
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if (option_mask32 & OPT_SHOW_DEPS) {
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printf(options ? "insmod %s/%s/%s %s\n"
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: "insmod %s/%s/%s\n",
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CONFIG_DEFAULT_MODULES_DIR, G.uts.release, fn,
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options);
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free(options);
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continue;
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}
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if (m2->flags & MODULE_FLAG_LOADED) {
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DBG("%s is already loaded, skipping", fn);
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free(options);
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continue;
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}
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rc = bb_init_module(fn, options);
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DBG("loaded %s '%s', rc:%d", fn, options, rc);
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if (rc == EEXIST)
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