From patchwork Tue Dec 9 12:43:14 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adhemerval Zanella X-Patchwork-Id: 419046 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 68E1C1400D2 for ; Tue, 9 Dec 2014 23:43:46 +1100 (AEDT) DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:message-id:date:from:mime-version:to:subject :content-type:content-transfer-encoding; q=dns; s=default; b=xez i79gSyvnzlX0PsKihL8ciV6Q/Pd0d5GxaWVfePdspt03uw96Ef8taLetFq6QzIWV HMFWCkIbwgHzsvnX2tkKBZgRMWlZTtn167KeQtkAT4o8axH7FCvklzGEmyy3iyo+ 66PTzK0yYnDUzx8btWzaAwBiCprRjP97ZvgUApoA= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:message-id:date:from:mime-version:to:subject :content-type:content-transfer-encoding; s=default; bh=oWKm8c02z PbU9eYN0ijhrxYq2Es=; b=ph0wSs4I9xNx84OqGW3FAuqLWMiYJn8dSgyp1h7nT ZcqFJmVrovLr3D+3WS5Va6I3B8DOQZkArUo7dQLp4RH2etQVd/hx93OhAhMrzIS+ oJ4gQXw3RIMcL+2XryhasEmgQz1Ts8G+UERi3wSz6bScl2qBZSGvNUM4nEPRzeF1 fY= Received: (qmail 12541 invoked by alias); 9 Dec 2014 12:43:27 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 12378 invoked by uid 89); 9 Dec 2014 12:43:26 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.1 required=5.0 tests=AWL, BAYES_00, T_RP_MATCHES_RCVD autolearn=ham version=3.3.2 X-HELO: e24smtp05.br.ibm.com Message-ID: <5486EE62.3040704@linux.vnet.ibm.com> Date: Tue, 09 Dec 2014 10:43:14 -0200 From: Adhemerval Zanella User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: "GNU C. Library" Subject: [PATCH resend 2/2] libio: Update tst-fmemopen2.c X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14120912-0033-0000-0000-0000013B00D9 This patch updates tst-fmemopen2 to check for fmemopen with NULL buffer inputs and also refactor the code a bit. The test relies on a POSIX compliant fmemopen implementation. Tested on powerpc64, powercp32, and x86_64. --- * stdio-common/tst-fmemopen2.c (do_test): Add test for NULL and zero length buffers. * stdio-common/tst-fmemopen.c (do_test): Refactor to use test-skeleton.c. -- diff --git a/stdio-common/tst-fmemopen2.c b/stdio-common/tst-fmemopen2.c index c2a4baa..0ae231c 100644 --- a/stdio-common/tst-fmemopen2.c +++ b/stdio-common/tst-fmemopen2.c @@ -1,68 +1,253 @@ +/* fmemopen tests. + Copyright (C) 2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + + #include #include #include #include - +#include static int -do_test (void) +do_test_with_buffer (void) { int result = 0; char buf[100]; - FILE *fp = fmemopen (buf, sizeof (buf), "w"); + const size_t nbuf = sizeof (buf); + + FILE *fp = fmemopen (buf, nbuf, "w"); if (fp == NULL) { - puts ("fmemopen failed"); - return 0; + printf ("%s: fmemopen failed\n", __FUNCTION__); + return 1; } + static const char str[] = "hello world"; -#define nstr (sizeof (str) - 1) + const size_t nstr = sizeof (str) - 1; fputs (str, fp); off_t o = ftello (fp); if (o != nstr) { - printf ("first ftello returned %ld, expected %zu\n", o, nstr); + printf ("%s: first ftello returned %ld, expected %zu\n", + __FUNCTION__, o, nstr); result = 1; } + rewind (fp); o = ftello (fp); if (o != 0) { - printf ("second ftello returned %ld, expected 0\n", o); + printf ("%s: second ftello returned %ld, expected 0\n", + __FUNCTION__, o); result = 1; } if (fseeko (fp, 0, SEEK_END) != 0) { - puts ("fseeko failed"); - return 1; + printf ("%s: fseeko failed\n", __FUNCTION__); + result = 1; } o = ftello (fp); if (o != nstr) { - printf ("third ftello returned %ld, expected %zu\n", o, nstr); + printf ("%s: third ftello returned %ld, expected %zu\n", + __FUNCTION__, o, nbuf); result = 1; } + rewind (fp); static const char str2[] = "just hello"; -#define nstr2 (sizeof (str2) - 1) + const size_t nstr2 = sizeof (str2) - 1; assert (nstr2 < nstr); fputs (str2, fp); o = ftello (fp); if (o != nstr2) { - printf ("fourth ftello returned %ld, expected %zu\n", o, nstr2); + printf ("%s: fourth ftello returned %ld, expected %zu\n", + __FUNCTION__, o, nstr2); result = 1; } fclose (fp); + static const char str3[] = "just hellod"; if (strcmp (buf, str3) != 0) { - printf ("final string is \"%s\", expected \"%s\"\n", - buf, str3); + printf ("%s: final string is \"%s\", expected \"%s\"\n", + __FUNCTION__, buf, str3); + result = 1; + } + return result; +} + +static int +do_test_without_buffer (void) +{ + int result = 0; + const size_t nbuf = 100; + + FILE *fp = fmemopen (NULL, nbuf, "w"); + if (fp == NULL) + { + printf ("%s: fmemopen failed\n", __FUNCTION__); + return 1; + } + + static const char str[] = "hello world"; + const size_t nstr = sizeof (str) - 1; + + fputs (str, fp); + off_t o = ftello (fp); + if (o != nstr) + { + printf ("%s: first ftello returned %ld, expected %zu\n", + __FUNCTION__, o, nstr); + result = 1; + } + if (fseeko (fp, 0, SEEK_END) != 0) + { + printf ("%s: fseeko failed\n", __FUNCTION__); + result = 1; + } + o = ftello (fp); + if (o != nstr) + { + printf ("%s: second ftello returned %ld, expected %zu\n", + __FUNCTION__, o, nbuf); result = 1; } + rewind (fp); + static const char str2[] = "just hello"; + const size_t nstr2 = sizeof (str2) - 1; + assert (nstr2 < nstr); + fputs (str2, fp); + o = ftello (fp); + if (o != nstr2) + { + printf ("%s: third ftello returned %ld, expected %zu\n", + __FUNCTION__, o, nstr2); + result = 1; + } + fclose (fp); + return result; } +static int +do_test_length_zero (void) +{ + int result = 0; + FILE *fp; +#define BUFCONTENTS "testing buffer" + char buf[100] = BUFCONTENTS; + const size_t nbuf = 0; + int r; + + fp = fmemopen (buf, nbuf, "r"); + if (fp == NULL) + { + printf ("%s: fmemopen failed\n", __FUNCTION__); + return 1; + } + + /* Reading any data on a zero-length buffer should return EOF. */ + if ((r = fgetc (fp)) != EOF) + { + printf ("%s: fgetc on a zero-length returned: %d\n", + __FUNCTION__, r); + result = 1; + } + off_t o = ftello (fp); + if (o != 0) + { + printf ("%s: first ftello returned %ld, expected 0\n", + __FUNCTION__, o); + result = 1; + } + fclose (fp); + + /* Writing any data shall start at current position and shall not pass + current buffer size beyond the size in fmemopen call. */ + fp = fmemopen (buf, nbuf, "w"); + if (fp == NULL) + { + printf ("%s: second fmemopen failed\n", __FUNCTION__); + return 1; + } + + static const char str[] = "hello world"; + /* Because of buffering, fputs call itself don't fail, however the final + buffer should be not changed because of length 0 passed in fmemopen + call. */ + fputs (str, fp); + r = 0; + errno = 0; + if (fflush (fp) != EOF) + { + printf ("%s: fflush did not return EOF\n", __FUNCTION__); + fclose (fp); + return 1; + } + if (errno != ENOSPC) + { + printf ("%s: errno is %i (expected %i - ENOSPC)\n", __FUNCTION__, + errno, ENOSPC); + fclose (fp); + return 1; + } + + fclose (fp); + + if (strcmp (buf, BUFCONTENTS) != 0) + { + printf ("%s: strcmp (%s, %s) failed\n", __FUNCTION__, buf, + BUFCONTENTS); + return 1; + } + + /* Different than 'w' mode, 'w+' truncates the buffer. */ + fp = fmemopen (buf, nbuf, "w+"); + if (fp == NULL) + { + printf ("%s: second fmemopen failed\n", __FUNCTION__); + return 1; + } + + fclose (fp); + + if (strcmp (buf, "") != 0) + { + printf ("%s: strcmp (%s, \"\") failed\n", __FUNCTION__, buf); + return 1; + } + + return result; +} + +static int +do_test (void) +{ + int ret = 0; + + ret += do_test_with_buffer (); + ret += do_test_without_buffer (); + ret += do_test_length_zero (); + + return ret; +} + #define TEST_FUNCTION do_test () #include "../test-skeleton.c"