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Mon, 19 Feb 2024 05:48:58 -0800 (PST) Received: from localhost ([223.72.38.233]) by smtp.gmail.com with ESMTPSA id fd10-20020a056a002e8a00b006e10bfd6a94sm4823716pfb.128.2024.02.19.05.48.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Feb 2024 05:48:57 -0800 (PST) To: ltp@lists.linux.it Date: Mon, 19 Feb 2024 08:48:45 -0500 Message-Id: <20240219134845.22171-1-wegao@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20231204002623.17302-1-wegao@suse.com> References: <20231204002623.17302-1-wegao@suse.com> MIME-Version: 1.0 X-Spam-Status: No, score=0.1 required=7.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,DMARC_PASS,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE 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 X-Virus-Scanned: clamav-milter 1.0.3 at in-2.smtp.seeweb.it X-Virus-Status: Clean Subject: [LTP] [PATCH v2] tst_test.c: Set system default umaks to 0022 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: , X-Patchwork-Original-From: Wei Gao via ltp From: Wei Gao Reply-To: Wei Gao Errors-To: ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it Sender: "ltp" Some system's default umask is 0077, this will trigger issues for LTP case. Example 1: cgroup_core01.c will report following error msg: cgroup_core01.c:50: TBROK: openat(21, 'tasks', 2, 0): EACCES (13) Detail reason: Code: cg_child_a = tst_cg_group_mk(tst_cg, "child_a"); cg_child_b = tst_cg_group_mk(tst_cg, "child_b"); Result: wegao:/sys/fs/cgroup # ll ltp/test-25304/ drwx------ 2 root root 0 Feb 10 10:37 child_a <<<<<< group and other has no any permission drwx------ 2 root root 0 Feb 10 10:38 child_b Code: SAFE_CG_FCHOWN(cg_child_a, "cgroup.procs", nobody_uid, -1); SAFE_CG_FCHOWN(cg_child_b, "cgroup.procs", nobody_uid, -1); Result: wegao:/sys/fs/cgroup # ll ltp/test-26388/child_a/ total 0 -rw-r--r-- 1 nobody root 0 Feb 10 10:44 cgroup.procs <<<<<< Code: SAFE_SETEUID(nobody_uid); <<<< after switch to nobody then can not access child_{a,b} or any file under child_{a,b} Result: nobody@wegao:/sys/fs/cgroup/ltp/test-26730> ll child_a/ <<< nobody has no permission on child_a ls: cannot open directory 'child_a/': Permission denied Code: loops = SAFE_CG_OPEN(cg_child_b, "cgroup.procs", O_RDWR, fds); Result: cgroup_core01.c:76: TBROK: openat(9, 'cgroup.procs', 2, 0): EACCES (13) Example 2: chdir01 chdir01.c:107: TFAIL: nobody: chdir("testfile") returned unexpected error: EACCES (13) Reason: susetest:/tmp/LTP_chd5JtblL/mntpoint # mount | grep loop0 /dev/loop0 on /tmp/LTP_chd5JtblL/mntpoint type vfat (rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro) /dev/loop0 on /var/tmp/LTP_chd5JtblL/mntpoint type vfat (rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro) susetest:/tmp/LTP_chd5JtblL # ll total 307216 drwx------ 4 root root 16384 Dec 31 1969 mntpoint <<<< nobody has no permission on mount directory -rw------- 1 root root 314572800 Feb 19 04:51 test_dev.img susetest:/tmp/LTP_chd5JtblL/mntpoint # ll total 16 -rwx------ 1 root root 0 Feb 19 04:53 aa drwx------ 2 root root 8192 Feb 19 04:50 keep_out drwx------ 2 root root 8192 Feb 19 04:50 subdir -rwx------ 1 root root 0 Feb 19 04:50 testfile <<<< nobody has no permission on testfile Signed-off-by: Wei Gao --- lib/tst_test.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/tst_test.c b/lib/tst_test.c index edb42f7f4..e03fd93e7 100644 --- a/lib/tst_test.c +++ b/lib/tst_test.c @@ -1174,6 +1174,8 @@ static void do_setup(int argc, char *argv[]) { char *tdebug_env = getenv("LTP_ENABLE_DEBUG"); + umask(0022); + if (!tst_test) tst_brk(TBROK, "No tests to run");