Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753445AbbDSTWW (ORCPT ); Sun, 19 Apr 2015 15:22:22 -0400 Received: from mail.windriver.com ([147.11.1.11]:54465 "EHLO mail.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753209AbbDSTWU (ORCPT ); Sun, 19 Apr 2015 15:22:20 -0400 From: Paul Gortmaker To: Rusty Russell CC: , Paul Gortmaker Subject: [PATCH 1/2] modpost: expand pattern matching to support substring matches Date: Sun, 19 Apr 2015 15:20:47 -0400 Message-ID: <1429471248-4641-1-git-send-email-paul.gortmaker@windriver.com> X-Mailer: git-send-email 2.2.1 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1823 Lines: 53 Currently the match() function supports a leading * to match any prefix and a trailing * to match any suffix. However there currently is not a combination of both that can be used to target matches of whole families of functions that share a common substring. Here we expand the *foo and foo* match to also support *foo* with the goal of targeting compiler generated symbol names that contain strings like ".constprop." and ".isra." Signed-off-by: Paul Gortmaker --- scripts/mod/modpost.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 22dbc604cdb9..b18cecb6bf5a 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -776,6 +776,7 @@ static const char *sech_name(struct elf_info *elf, Elf_Shdr *sechdr) * "foo" will match an exact string equal to "foo" * "*foo" will match a string that ends with "foo" * "foo*" will match a string that begins with "foo" + * "*foo*" will match a string that contains "foo" */ static int match(const char *sym, const char * const pat[]) { @@ -784,8 +785,17 @@ static int match(const char *sym, const char * const pat[]) p = *pat++; const char *endp = p + strlen(p) - 1; + /* "*foo*" */ + if (*p == '*' && *endp == '*') { + char *here, *bare = strndup(p + 1, strlen(p) - 2); + + here = strstr(sym, bare); + free(bare); + if (here != NULL) + return 1; + } /* "*foo" */ - if (*p == '*') { + else if (*p == '*') { if (strrcmp(sym, p + 1) == 0) return 1; } -- 2.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/