Message ID | 20200204013720.6WLKyLh5o%akpm@linux-foundation.org (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <SRS0=xrrM=3Y=kvack.org=owner-linux-mm@kernel.org> Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E974D13B4 for <patchwork-linux-mm@patchwork.kernel.org>; Tue, 4 Feb 2020 01:37:25 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id ACE3E2087E for <patchwork-linux-mm@patchwork.kernel.org>; Tue, 4 Feb 2020 01:37:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="V6hbcgEq" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ACE3E2087E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 365E56B02C9; Mon, 3 Feb 2020 20:37:23 -0500 (EST) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 319376B02CB; Mon, 3 Feb 2020 20:37:23 -0500 (EST) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1E1186B02CC; Mon, 3 Feb 2020 20:37:23 -0500 (EST) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0005.hostedemail.com [216.40.44.5]) by kanga.kvack.org (Postfix) with ESMTP id 0689A6B02C9 for <linux-mm@kvack.org>; Mon, 3 Feb 2020 20:37:23 -0500 (EST) Received: from smtpin14.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id A772F2497 for <linux-mm@kvack.org>; Tue, 4 Feb 2020 01:37:22 +0000 (UTC) X-FDA: 76450731924.14.bomb65_23445cfefe32a X-Spam-Summary: 2,0,0,d8eaca7ba6f07621,d41d8cd98f00b204,akpm@linux-foundation.org,:acme@redhat.com:akpm@linux-foundation.org:amritha.nambiar@intel.com:andriy.shevchenko@linux.intel.com:chris@chris-wilson.co.uk:keescook@chromium.org::linux@rasmusvillemoes.dk:mm-commits@vger.kernel.org:mszeredi@redhat.com:steffen.klassert@secunet.com:tobin@kernel.org:torvalds@linux-foundation.org:vineet.gupta1@synopsys.com:will.deacon@arm.com:willemb@google.com:willy@infradead.org:yury.norov@gmail.com,RULES_HIT:41:355:379:800:960:967:973:988:989:1260:1263:1345:1359:1381:1431:1437:1534:1543:1711:1730:1747:1777:1792:2198:2199:2393:2525:2559:2563:2682:2685:2693:2731:2859:2902:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3165:3355:3865:3866:3867:3868:3870:3871:3872:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4250:4321:4605:5007:6261:6653:6737:7514:7576:7875:7903:7904:8599:9025:9545:10004:10913:11026:11473:11658:11914:12043:12048:12297:12438:12517:12519:12555:12679:127 83:12986 X-HE-Tag: bomb65_23445cfefe32a X-Filterd-Recvd-Size: 4877 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf43.hostedemail.com (Postfix) with ESMTP for <linux-mm@kvack.org>; Tue, 4 Feb 2020 01:37:22 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0CB662086A; Tue, 4 Feb 2020 01:37:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580780241; bh=a/WP/5dkugWbPoU4nzV2sJncoa1pl1jMFsfWvTsBizg=; h=Date:From:To:Subject:In-Reply-To:From; b=V6hbcgEqxmLtYvcimT+o9y0/2hkziv/CqAFggr9OApDxkLHIwYHiGWkXsnrLEd6xI r4EDTHx6JkLCjU6s51dEyUe3S9H/QiE/x55a3QKeWqLoFBuZA+/DCeEr3xqXIBmfDB 2ccu0UIvl4qtBUnaZf+16q24uIcVSwE139K8asKM= Date: Mon, 03 Feb 2020 17:37:20 -0800 From: Andrew Morton <akpm@linux-foundation.org> To: acme@redhat.com, akpm@linux-foundation.org, amritha.nambiar@intel.com, andriy.shevchenko@linux.intel.com, chris@chris-wilson.co.uk, keescook@chromium.org, linux-mm@kvack.org, linux@rasmusvillemoes.dk, mm-commits@vger.kernel.org, mszeredi@redhat.com, steffen.klassert@secunet.com, tobin@kernel.org, torvalds@linux-foundation.org, vineet.gupta1@synopsys.com, will.deacon@arm.com, willemb@google.com, willy@infradead.org, yury.norov@gmail.com Subject: [patch 59/67] lib/string: add strnchrnul() Message-ID: <20200204013720.6WLKyLh5o%akpm@linux-foundation.org> In-Reply-To: <20200203173311.6269a8be06a05e5a4aa08a93@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: <linux-mm.kvack.org> |
Series |
[01/67] ocfs2: fix oops when writing cloned file
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expand
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--- a/include/linux/string.h~lib-string-add-strnchrnul +++ a/include/linux/string.h @@ -62,6 +62,7 @@ extern char * strchr(const char *,int); #ifndef __HAVE_ARCH_STRCHRNUL extern char * strchrnul(const char *,int); #endif +extern char * strnchrnul(const char *, size_t, int); #ifndef __HAVE_ARCH_STRNCHR extern char * strnchr(const char *, size_t, int); #endif --- a/lib/string.c~lib-string-add-strnchrnul +++ a/lib/string.c @@ -434,6 +434,23 @@ char *strchrnul(const char *s, int c) EXPORT_SYMBOL(strchrnul); #endif +/** + * strnchrnul - Find and return a character in a length limited string, + * or end of string + * @s: The string to be searched + * @count: The number of characters to be searched + * @c: The character to search for + * + * Returns pointer to the first occurrence of 'c' in s. If c is not found, + * then return a pointer to the last character of the string. + */ +char *strnchrnul(const char *s, size_t count, int c) +{ + while (count-- && *s && *s != (char)c) + s++; + return (char *)s; +} + #ifndef __HAVE_ARCH_STRRCHR /** * strrchr - Find the last occurrence of a character in a string