Ejemplo n.º 1
0
static void parse_module(module_info *info, const char *pathname)
{
	char *module_image;
	char *ptr;
	size_t len;
	size_t pos;
	dbg1_error_msg("parse_module('%s')", pathname);

	/* Read (possibly compressed) module */
	len = 64 * 1024 * 1024; /* 64 Mb at most */
	module_image = xmalloc_open_zipped_read_close(pathname, &len);
	/* module_image == NULL is ok here, find_keyword handles it */
//TODO: optimize redundant module body reads

	/* "alias1 symbol:sym1 alias2 symbol:sym2" */
	reset_stringbuf();
	pos = 0;
	while (1) {
		ptr = find_keyword(module_image + pos, len - pos, "alias=");
		if (!ptr) {
			ptr = find_keyword(module_image + pos, len - pos, "__ksymtab_");
			if (!ptr)
				break;
			/* DOCME: __ksymtab_gpl and __ksymtab_strings occur
			 * in many modules. What do they mean? */
			if (strcmp(ptr, "gpl") == 0 || strcmp(ptr, "strings") == 0)
				goto skip;
			dbg2_error_msg("alias:'symbol:%s'", ptr);
			append("symbol:");
		} else {
			dbg2_error_msg("alias:'%s'", ptr);
		}
		append(ptr);
		appendc(' ');
 skip:
		pos = (ptr - module_image);
	}
	bksp(); /* remove last ' ' */
	info->aliases = copy_stringbuf();
	replace(info->aliases, '-', '_');

	/* "dependency1 depandency2" */
	reset_stringbuf();
	ptr = find_keyword(module_image, len, "depends=");
	if (ptr && *ptr) {
		replace(ptr, ',', ' ');
		replace(ptr, '-', '_');
		dbg2_error_msg("dep:'%s'", ptr);
		append(ptr);
	}
	info->deps = copy_stringbuf();

	free(module_image);
}
Ejemplo n.º 2
0
static void parse_module(module_info *info, const char *pathname)
{
	char *module_image;
	char *ptr;
	size_t len;
	size_t pos;
	dbg1_error_msg("parse_module('%s')", pathname);

	/* Read (possibly compressed) module */
	len = 64 * 1024 * 1024; /* 64 Mb at most */
	module_image = xmalloc_open_zipped_read_close(pathname, &len);
	/* module_image == NULL is ok here, find_keyword handles it */
//TODO: optimize redundant module body reads

	/* "alias1 symbol:sym1 alias2 symbol:sym2" */
	reset_stringbuf();
	pos = 0;
	while (1) {
		unsigned start = stringbuf_idx;
		ptr = find_keyword(module_image + pos, len - pos, "alias=");
		if (!ptr) {
			ptr = find_keyword(module_image + pos, len - pos, "__ksymtab_");
			if (!ptr)
				break;
			/* DOCME: __ksymtab_gpl and __ksymtab_strings occur
			 * in many modules. What do they mean? */
			if (strcmp(ptr, "gpl") == 0 || strcmp(ptr, "strings") == 0)
				goto skip;
			dbg2_error_msg("alias:'symbol:%s'", ptr);
			append("symbol:");
		} else {
			dbg2_error_msg("alias:'%s'", ptr);
		}
		append(ptr);
		appendc(' ');
		/*
		 * Don't add redundant aliases, such as:
		 * libcrc32c.ko symbol:crc32c symbol:crc32c
		 */
		if (start) { /* "if we aren't the first alias" */
			char *found, *last;
			stringbuf[stringbuf_idx] = '\0';
			last = stringbuf + start;
			/*
			 * String at last-1 is " symbol:crc32c "
			 * (with both leading and trailing spaces).
			 */
			if (strncmp(stringbuf, last, stringbuf_idx - start) == 0)
				/* First alias matches us */
				found = stringbuf;
			else
				/* Does any other alias match? */
				found = strstr(stringbuf, last-1);
			if (found < last-1) {
				/* There is absolutely the same string before us */
				dbg2_error_msg("redundant:'%s'", last);
				stringbuf_idx = start;
				goto skip;
			}
		}
 skip:
		pos = (ptr - module_image);
	}
	bksp(); /* remove last ' ' */
	info->aliases = copy_stringbuf();
	replace(info->aliases, '-', '_');

	/* "dependency1 depandency2" */
	reset_stringbuf();
	ptr = find_keyword(module_image, len, "depends=");
	if (ptr && *ptr) {
		replace(ptr, ',', ' ');
		replace(ptr, '-', '_');
		dbg2_error_msg("dep:'%s'", ptr);
		append(ptr);
	}
	info->deps = copy_stringbuf();

	free(module_image);
}