diff options
| -rw-r--r-- | modutils/depmod.c | 76 |
1 files changed, 47 insertions, 29 deletions
diff --git a/modutils/depmod.c b/modutils/depmod.c index c734f14..694f9ea 100644 --- a/modutils/depmod.c +++ b/modutils/depmod.c @@ -28,16 +28,6 @@ typedef struct module_info { struct module_info *dnext, *dprev; } module_info; -enum { - ARG_a = (1<<0), /* All modules, ignore mods in argv */ - ARG_A = (1<<1), /* Only emit .ko that are newer than modules.dep file */ - ARG_b = (1<<2), /* base directory when modules are in staging area */ - ARG_e = (1<<3), /* with -F, print unresolved symbols */ - ARG_F = (1<<4), /* System.map that contains the symbols */ - ARG_n = (1<<5), /* dry-run, print to stdout only */ - ARG_r = (1<<6) /* Compat dummy. Linux Makefile uses it */ -}; - static int FAST_FUNC parse_module(const char *fname, struct stat *sb UNUSED_PARAM, void *data, int depth UNUSED_PARAM) { @@ -58,7 +48,7 @@ static int FAST_FUNC parse_module(const char *fname, struct stat *sb UNUSED_PARA *first = info; info->dnext = info->dprev = info; - info->name = xasprintf("/%s", fname); + info->name = xstrdup(fname + 2); /* skip "./" */ info->modname = xstrdup(filename2modname(fname, modname)); for (ptr = image; ptr < image + len - 10; ptr++) { if (strncmp(ptr, "depends=", 8) == 0) { @@ -134,10 +124,44 @@ static void xfreopen_write(const char *file, FILE *f) bb_perror_msg_and_die("can't open '%s'", file); } +/* Usage: + * [-aAenv] [-C FILE or DIR] [-b BASE] [-F System.map] [VERSION] [MODFILES]... + * -a --all + * Probe all modules. Default if no MODFILES. + * -A --quick + * Check modules.dep's mtime against module files' mtimes. + * -b --basedir BASE + * Use $BASE/lib/modules/VERSION + * -C --config FILE or DIR + * Path to /etc/depmod.conf or /etc/depmod.d/ + * -e --errsyms + * When combined with the -F option, this reports any symbols which + * which are not supplied by other modules or kernel. + * -F --filesyms System.map + * -n --dry-run + * Print modules.dep etc to standard output + * -v --verbose + * Print to stdout all the symbols each module depends on + * and the module's file name which provides that symbol. + * -r No-op + * + * So far we only support: [-rn] [-b BASE] [VERSION] [MODFILES]... + * -aAeF are accepted but ignored. -vC are not accepted. + */ +enum { + //OPT_a = (1 << 0), /* All modules, ignore mods in argv */ + //OPT_A = (1 << 1), /* Only emit .ko that are newer than modules.dep file */ + OPT_b = (1 << 2), /* base directory when modules are in staging area */ + //OPT_e = (1 << 3), /* with -F, print unresolved symbols */ + //OPT_F = (1 << 4), /* System.map that contains the symbols */ + OPT_n = (1 << 5), /* dry-run, print to stdout only */ + OPT_r = (1 << 6) /* Compat dummy. Linux Makefile uses it */ +}; + int depmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int depmod_main(int argc UNUSED_PARAM, char **argv) { - module_info *modules = NULL, *m, *dep; + module_info *modules, *m, *dep; const char *moddir_base = "/"; char *moddir, *version; struct utsname uts; @@ -152,36 +176,30 @@ int depmod_main(int argc UNUSED_PARAM, char **argv) /* If a version is provided, then that kernel version's module directory * is used, rather than the current kernel version (as returned by * "uname -r"). */ - if (*argv && sscanf(*argv, "%d.%d.%d", &tmp, &tmp, &tmp) == 3) { + if (*argv && sscanf(*argv, "%u.%u.%u", &tmp, &tmp, &tmp) == 3) { version = *argv++; } else { uname(&uts); version = uts.release; } moddir = concat_path_file(&CONFIG_DEFAULT_MODULES_DIR[1], version); + xchdir(moddir); + if (ENABLE_FEATURE_CLEAN_UP) + free(moddir); /* Scan modules */ + modules = NULL; if (*argv) { - char *modfile; - struct stat sb; do { - modfile = concat_path_file(moddir, *argv); - xstat(modfile, &sb); - parse_module(modfile, &sb, &modules, 0); - free(modfile); - } while (*(++argv)); + parse_module(*argv, /*sb (unused):*/ NULL, &modules, 0); + } while (*++argv); } else { - recursive_action(moddir, ACTION_RECURSE, + recursive_action(".", ACTION_RECURSE, parse_module, NULL, &modules, 0); } - /* Prepare for writing out the dep files */ - xchdir(moddir); - if (ENABLE_FEATURE_CLEAN_UP) - free(moddir); - /* Generate dependency and alias files */ - if (!(option_mask32 & ARG_n)) + if (!(option_mask32 & OPT_n)) xfreopen_write(CONFIG_DEFAULT_DEPMOD_FILE, stdout); for (m = modules; m != NULL; m = m->next) { printf("%s:", m->name); @@ -200,7 +218,7 @@ int depmod_main(int argc UNUSED_PARAM, char **argv) } #if ENABLE_FEATURE_MODUTILS_ALIAS - if (!(option_mask32 & ARG_n)) + if (!(option_mask32 & OPT_n)) xfreopen_write("modules.alias", stdout); for (m = modules; m != NULL; m = m->next) { const char *fname = bb_basename(m->name); @@ -218,7 +236,7 @@ int depmod_main(int argc UNUSED_PARAM, char **argv) } #endif #if ENABLE_FEATURE_MODUTILS_SYMBOLS - if (!(option_mask32 & ARG_n)) + if (!(option_mask32 & OPT_n)) xfreopen_write("modules.symbols", stdout); for (m = modules; m != NULL; m = m->next) { const char *fname = bb_basename(m->name); |