- misc. improvements and shrinkage
This commit is contained in:
Bernhard Reutner-Fischer
parent
17282292c2
commit
634b022108
@ -18,8 +18,8 @@
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* for each depends, look through our list of full paths and emit if found
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*/
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struct globals {
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llist_t *lst;
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unsigned moddir_base_len;
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llist_t *lst; /* modules without their corresponding extension */
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size_t moddir_base_len; /* length of the "-b basedir" */
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};
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#define G (*(struct globals*)&bb_common_bufsiz1)
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/* We have to zero it out because of NOEXEC */
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@ -28,7 +28,10 @@ struct globals {
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static int fill_lst(const char *modulename, struct stat ATTRIBUTE_UNUSED *sb,
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void ATTRIBUTE_UNUSED *data, int ATTRIBUTE_UNUSED depth)
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{
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if (last_char_is(modulename, 'o') != NULL) /* it is a module, remember it */
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/* We get a file here. If the file does not have ".ko" but an
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* intermittent dentry has, it's just their fault.
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*/
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if (strrstr(modulename, ".ko") != NULL)
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llist_add_to(&G.lst, xstrdup(modulename + G.moddir_base_len));
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return TRUE;
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}
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@ -37,17 +40,18 @@ static int fileAction(const char *fname, struct stat *sb,
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void *data, int ATTRIBUTE_UNUSED depth)
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{
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size_t len = sb->st_size;
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void *the_module, *ptr;
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void *the_module;
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char *ptr;
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int fd;
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char *depends, *deps;
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if (strrstr(fname, ".ko") == NULL) /* not a module */
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goto skip;
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/*XXX: FIXME: does not handle compressed modules!
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* There should be a function that looks at the extension and sets up
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* open_transformer for us.
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*/
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if (last_char_is(fname, 'o') == NULL) /* not a module */
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goto skip;
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fd = xopen(fname, O_RDONLY);
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the_module = mmap(NULL, len, PROT_READ, MAP_SHARED
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#if defined MAP_POPULATE
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@ -64,43 +68,36 @@ static int fileAction(const char *fname, struct stat *sb,
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//bb_info_msg("fname='%s'", fname + G.moddir_base_len);
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do {
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/* search for a 'd' */
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ptr = memchr(ptr, 'd', len - (ptr - the_module));
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ptr = memchr(ptr, 'd', len - (ptr - (char*)the_module));
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if (ptr == NULL) /* no d left, done */
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goto done;
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if (memcmp(ptr, "depends=", sizeof("depends=")-1) == 0)
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goto none;
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if (strncmp(ptr, "depends=", sizeof("depends=")-1) == 0)
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break;
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++ptr;
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} while (1);
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deps = depends = xstrdup (ptr + sizeof("depends=")-1);
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//bb_info_msg(" depends='%s'", depends);
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while (*deps) {
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while (deps) {
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llist_t * _lst = G.lst;
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char *buf1;
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ptr = strchr(deps, ',');
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if (ptr != NULL)
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*(char*)ptr = '\0';
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/* remember the length of the current dependency plus eventual 0 byte */
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len = strlen(deps) + (ptr != NULL);
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buf1 = xasprintf("/%s.", deps); /* match the correct file */
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ptr = strsep(&deps, ",");
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while (_lst) {
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ptr = strstr(_lst->data, buf1);
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if (ptr != NULL)
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/* Compare the recorded filenames ignoring ".ko*" at the end. */
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char *tmp = bb_get_last_path_component_nostrip(_lst->data);
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if (strncmp(ptr, tmp, strrstr(tmp, ".ko") - tmp) == 0)
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break; /* found it */
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_lst = _lst->link;
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}
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free(buf1);
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if (_lst /*&& _lst->data*/) {
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//bb_info_msg("[%s] -> '%s'", deps, _lst->data);
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if (_lst) {
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//bb_info_msg("[%s] -> '%s'", (char*)ptr, _lst->data);
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fprintf((FILE*)data, " %s", _lst->data);
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deps += len;
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}
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}
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free(depends);
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fprintf((FILE*)data, "\n");
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done:
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none:
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munmap(the_module, sb->st_size);
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skip:
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skip:
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return TRUE;
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}
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@ -123,7 +120,7 @@ int depmod_main(int ATTRIBUTE_UNUSED argc, char **argv)
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argv += optind;
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/* got a version to use? */
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if (*argv && (sscanf(*argv, "%u.%u.%u", &ret, &ret, &ret) == 3)) {
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if (*argv && (sscanf(*argv, "%d.%d.%d", &ret, &ret, &ret) == 3)) {
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moddir = concat_path_file(CONFIG_DEFAULT_MODULES_DIR, *argv++);
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} else {
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struct utsname uts;
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@ -131,7 +128,7 @@ int depmod_main(int ATTRIBUTE_UNUSED argc, char **argv)
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bb_simple_perror_msg_and_die("uname");
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moddir = concat_path_file(CONFIG_DEFAULT_MODULES_DIR, uts.release);
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}
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/* if no modules are given on the command-line, -a is on per default */
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/* If no modules are given on the command-line, -a is on per default. */
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option_mask32 |= *argv == NULL;
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if (option_mask32 & ARG_b) {
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@ -151,15 +148,18 @@ int depmod_main(int ATTRIBUTE_UNUSED argc, char **argv)
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free(chp);
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}
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ret = EXIT_SUCCESS;
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/* have to do a full walk to collect all needed data */
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/* We have to do a full walk to collect all needed data. */
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if (!recursive_action(moddir,
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ACTION_RECURSE, /* flags */
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fill_lst, /* file action */
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NULL, /* dir action */
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NULL, /* user data */
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0)) {
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ret = EXIT_FAILURE;
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} else
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0)) { /* depth */
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if (ENABLE_FEATURE_CLEAN_UP)
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ret = EXIT_FAILURE;
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else
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return EXIT_FAILURE;
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}
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do {
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chp = option_mask32 & ARG_a ? moddir : *argv++;
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