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authorBernhard Reutner-Fischer2008-05-28 14:20:20 +0000
committerBernhard Reutner-Fischer2008-05-28 14:20:20 +0000
commit634b0221088680153f4abe18db0504fda75a6d86 (patch)
treef84df94eab69bb6f6efeebe3d6ae54fc8d98a2b9 /modutils/depmod.c
parent17282292c2259b130ef7833bdac97c8ce8bf5515 (diff)
downloadbusybox-634b0221088680153f4abe18db0504fda75a6d86.zip
busybox-634b0221088680153f4abe18db0504fda75a6d86.tar.gz
- misc. improvements and shrinkage
Diffstat (limited to 'modutils/depmod.c')
-rw-r--r--modutils/depmod.c66
1 files changed, 33 insertions, 33 deletions
diff --git a/modutils/depmod.c b/modutils/depmod.c
index 15b49f0..e061501 100644
--- a/modutils/depmod.c
+++ b/modutils/depmod.c
@@ -18,8 +18,8 @@
* for each depends, look through our list of full paths and emit if found
*/
struct globals {
- llist_t *lst;
- unsigned moddir_base_len;
+ llist_t *lst; /* modules without their corresponding extension */
+ size_t moddir_base_len; /* length of the "-b basedir" */
};
#define G (*(struct globals*)&bb_common_bufsiz1)
/* We have to zero it out because of NOEXEC */
@@ -28,7 +28,10 @@ struct globals {
static int fill_lst(const char *modulename, struct stat ATTRIBUTE_UNUSED *sb,
void ATTRIBUTE_UNUSED *data, int ATTRIBUTE_UNUSED depth)
{
- if (last_char_is(modulename, 'o') != NULL) /* it is a module, remember it */
+ /* We get a file here. If the file does not have ".ko" but an
+ * intermittent dentry has, it's just their fault.
+ */
+ if (strrstr(modulename, ".ko") != NULL)
llist_add_to(&G.lst, xstrdup(modulename + G.moddir_base_len));
return TRUE;
}
@@ -37,17 +40,18 @@ static int fileAction(const char *fname, struct stat *sb,
void *data, int ATTRIBUTE_UNUSED depth)
{
size_t len = sb->st_size;
- void *the_module, *ptr;
+ void *the_module;
+ char *ptr;
int fd;
char *depends, *deps;
+ if (strrstr(fname, ".ko") == NULL) /* not a module */
+ goto skip;
+
/*XXX: FIXME: does not handle compressed modules!
* There should be a function that looks at the extension and sets up
* open_transformer for us.
*/
- if (last_char_is(fname, 'o') == NULL) /* not a module */
- goto skip;
-
fd = xopen(fname, O_RDONLY);
the_module = mmap(NULL, len, PROT_READ, MAP_SHARED
#if defined MAP_POPULATE
@@ -64,43 +68,36 @@ static int fileAction(const char *fname, struct stat *sb,
//bb_info_msg("fname='%s'", fname + G.moddir_base_len);
do {
/* search for a 'd' */
- ptr = memchr(ptr, 'd', len - (ptr - the_module));
+ ptr = memchr(ptr, 'd', len - (ptr - (char*)the_module));
if (ptr == NULL) /* no d left, done */
- goto done;
- if (memcmp(ptr, "depends=", sizeof("depends=")-1) == 0)
+ goto none;
+ if (strncmp(ptr, "depends=", sizeof("depends=")-1) == 0)
break;
++ptr;
} while (1);
deps = depends = xstrdup (ptr + sizeof("depends=")-1);
//bb_info_msg(" depends='%s'", depends);
- while (*deps) {
+ while (deps) {
llist_t * _lst = G.lst;
- char *buf1;
-
- ptr = strchr(deps, ',');
- if (ptr != NULL)
- *(char*)ptr = '\0';
- /* remember the length of the current dependency plus eventual 0 byte */
- len = strlen(deps) + (ptr != NULL);
- buf1 = xasprintf("/%s.", deps); /* match the correct file */
+
+ ptr = strsep(&deps, ",");
while (_lst) {
- ptr = strstr(_lst->data, buf1);
- if (ptr != NULL)
+ /* Compare the recorded filenames ignoring ".ko*" at the end. */
+ char *tmp = bb_get_last_path_component_nostrip(_lst->data);
+ if (strncmp(ptr, tmp, strrstr(tmp, ".ko") - tmp) == 0)
break; /* found it */
_lst = _lst->link;
}
- free(buf1);
- if (_lst /*&& _lst->data*/) {
-//bb_info_msg("[%s] -> '%s'", deps, _lst->data);
+ if (_lst) {
+//bb_info_msg("[%s] -> '%s'", (char*)ptr, _lst->data);
fprintf((FILE*)data, " %s", _lst->data);
- deps += len;
}
}
free(depends);
fprintf((FILE*)data, "\n");
-done:
+ none:
munmap(the_module, sb->st_size);
-skip:
+ skip:
return TRUE;
}
@@ -123,7 +120,7 @@ int depmod_main(int ATTRIBUTE_UNUSED argc, char **argv)
argv += optind;
/* got a version to use? */
- if (*argv && (sscanf(*argv, "%u.%u.%u", &ret, &ret, &ret) == 3)) {
+ if (*argv && (sscanf(*argv, "%d.%d.%d", &ret, &ret, &ret) == 3)) {
moddir = concat_path_file(CONFIG_DEFAULT_MODULES_DIR, *argv++);
} else {
struct utsname uts;
@@ -131,7 +128,7 @@ int depmod_main(int ATTRIBUTE_UNUSED argc, char **argv)
bb_simple_perror_msg_and_die("uname");
moddir = concat_path_file(CONFIG_DEFAULT_MODULES_DIR, uts.release);
}
- /* if no modules are given on the command-line, -a is on per default */
+ /* If no modules are given on the command-line, -a is on per default. */
option_mask32 |= *argv == NULL;
if (option_mask32 & ARG_b) {
@@ -151,15 +148,18 @@ int depmod_main(int ATTRIBUTE_UNUSED argc, char **argv)
free(chp);
}
ret = EXIT_SUCCESS;
- /* have to do a full walk to collect all needed data */
+ /* We have to do a full walk to collect all needed data. */
if (!recursive_action(moddir,
ACTION_RECURSE, /* flags */
fill_lst, /* file action */
NULL, /* dir action */
NULL, /* user data */
- 0)) {
- ret = EXIT_FAILURE;
- } else
+ 0)) { /* depth */
+ if (ENABLE_FEATURE_CLEAN_UP)
+ ret = EXIT_FAILURE;
+ else
+ return EXIT_FAILURE;
+ }
do {
chp = option_mask32 & ARG_a ? moddir : *argv++;