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Fri, 25 Aug 2023 06:39:42 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id Eo1EI65M6GSGLwAAMHmgww (envelope-from ) for ; Fri, 25 Aug 2023 06:39:42 +0000 From: Avinesh Kumar To: ltp@lists.linux.it Date: Fri, 25 Aug 2023 12:08:41 +0530 Message-ID: <20230825063932.30875-4-akumar@suse.de> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230825063932.30875-1-akumar@suse.de> References: <20230825063932.30875-1-akumar@suse.de> MIME-Version: 1.0 X-Virus-Scanned: clamav-milter 1.0.1 at in-2.smtp.seeweb.it X-Virus-Status: Clean X-Spam-Status: No, score=0.1 required=7.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS shortcircuit=no autolearn=disabled version=4.0.0 X-Spam-Checker-Version: SpamAssassin 4.0.0 (2022-12-13) on in-2.smtp.seeweb.it Subject: [LTP] [PATCH 4/5] syscalls/mmap14: Rewrite test using new LTP API X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it Sender: "ltp" Signed-off-by: Avinesh Kumar --- testcases/kernel/syscalls/mmap/mmap14.c | 135 +++++++----------------- 1 file changed, 40 insertions(+), 95 deletions(-) diff --git a/testcases/kernel/syscalls/mmap/mmap14.c b/testcases/kernel/syscalls/mmap/mmap14.c index 31632601b..2bc63ae58 100644 --- a/testcases/kernel/syscalls/mmap/mmap14.c +++ b/testcases/kernel/syscalls/mmap/mmap14.c @@ -1,124 +1,69 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 2013 FNST, DAN LI - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * Copyright (c) 2023 SUSE LLC Avinesh Kumar */ -/* - * Test Description: - * Verify MAP_LOCKED works fine. - * "Lock the pages of the mapped region into memory in the manner of mlock(2)." +/*\ + * [Description] * - * Expected Result: - * mmap() should succeed returning the address of the mapped region, - * and this region should be locked into memory. + * Verify that, mmap() call with MAP_LOCKED flag successfully locks + * the mapped pages into memory. */ -#include -#include -#include "test.h" +#include +#include "tst_test.h" -#define TEMPFILE "mmapfile" -#define MMAPSIZE (1UL<<20) +#define MMAPSIZE (1UL<<16) #define LINELEN 256 -char *TCID = "mmap14"; -int TST_TOTAL = 1; - static char *addr; - static void getvmlck(unsigned int *lock_sz); -static void setup(void); -static void cleanup(void); - -int main(int argc, char *argv[]) -{ - int lc; - unsigned int sz_before; - unsigned int sz_after; - unsigned int sz_ch; - - tst_parse_opts(argc, argv, NULL, NULL); - - setup(); - - for (lc = 0; TEST_LOOPING(lc); lc++) { - - tst_count = 0; - - getvmlck(&sz_before); - - addr = mmap(NULL, MMAPSIZE, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_LOCKED | MAP_ANONYMOUS, - -1, 0); - - if (addr == MAP_FAILED) { - tst_resm(TFAIL | TERRNO, "mmap of %s failed", TEMPFILE); - continue; - } - - getvmlck(&sz_after); - - sz_ch = sz_after - sz_before; - if (sz_ch == MMAPSIZE / 1024) { - tst_resm(TPASS, "Functionality of mmap() " - "successful"); - } else { - tst_resm(TFAIL, "Expected %luK locked, " - "get %uK locked", - MMAPSIZE / 1024, sz_ch); - } - - if (munmap(addr, MMAPSIZE) != 0) - tst_brkm(TFAIL | TERRNO, NULL, "munmap failed"); - } - - cleanup(); - tst_exit(); -} void getvmlck(unsigned int *lock_sz) { - int ret; char line[LINELEN]; - FILE *fstatus = NULL; + FILE *fp = NULL; - fstatus = fopen("/proc/self/status", "r"); - if (fstatus == NULL) - tst_brkm(TFAIL | TERRNO, NULL, "Open dev status failed"); + fp = fopen("/proc/self/status", "r"); + if (fp == NULL) + tst_brk(TFAIL | TERRNO, "could not open status file"); - while (fgets(line, LINELEN, fstatus) != NULL) + while (fgets(line, LINELEN, fp) != NULL) { if (strstr(line, "VmLck") != NULL) break; + } - ret = sscanf(line, "%*[^0-9]%d%*[^0-9]", lock_sz); - if (ret != 1) - tst_brkm(TFAIL | TERRNO, NULL, "Get lock size failed"); + if (sscanf(line, "%*[^0-9]%d%*[^0-9]", lock_sz) != 1) + tst_brk(TFAIL | TERRNO, "Get lock size failed"); - fclose(fstatus); + fclose(fp); } -static void setup(void) +static void run(void) { - tst_require_root(); + unsigned int sz_before, sz_after, sz_diff; - tst_sig(FORK, DEF_HANDLER, cleanup); + getvmlck(&sz_before); - TEST_PAUSE; -} + addr = mmap(0, MMAPSIZE, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_LOCKED | MAP_ANONYMOUS, -1, 0); -static void cleanup(void) -{ + if (addr != MAP_FAILED) + tst_res(TPASS, "mmap() with MAP_LOCKED flag passed"); + else { + tst_res(TFAIL | TERRNO, "mmap() failed"); + return; + } + + getvmlck(&sz_after); + sz_diff = sz_after - sz_before; + TST_EXP_EQ_LU(MMAPSIZE / 1024, sz_diff); + + SAFE_MUNMAP(addr, MMAPSIZE); } + +static struct tst_test test = { + .test_all = run, + .needs_tmpdir = 1 +};