From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1Z4qpX-000359-2N for ltp-list@lists.sourceforge.net; Tue, 16 Jun 2015 13:23:07 +0000 Received: from szxga03-in.huawei.com ([119.145.14.66]) by sog-mx-4.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1Z4qpS-0004Gp-AJ for ltp-list@lists.sourceforge.net; Tue, 16 Jun 2015 13:23:07 +0000 From: Yuan Sun Date: Tue, 16 Jun 2015 15:28:14 -0600 Message-ID: <1434490094-20593-1-git-send-email-sunyuan3@huawei.com> MIME-Version: 1.0 Subject: [LTP] [PATCH V3] containers: new testcase userns03 List-Id: Linux Test Project General Discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-list-bounces@lists.sourceforge.net To: jstancek@redhat.com Cc: ltp-list@lists.sourceforge.net ID-outside-ns is interpreted according to which process is opening the file. If the process opening the file is in the same user namespace as the process PID, then ID-outside-ns is defined with respect to the parent user namespace. If the process opening the file is in a different user namespace, then ID-outside-ns is defined with respect to the user namespace of the process opening the file. If kernel version >= 3.19.0, the case will ignore the git check. Signed-off-by: Yuan Sun --- runtest/containers | 1 + testcases/kernel/containers/.gitignore | 1 + testcases/kernel/containers/userns/userns03.c | 254 ++++++++++++++++++++++++++ 3 files changed, 256 insertions(+) create mode 100644 testcases/kernel/containers/userns/userns03.c diff --git a/runtest/containers b/runtest/containers index bb1beb6..720d0f2 100644 --- a/runtest/containers +++ b/runtest/containers @@ -70,3 +70,4 @@ mountns04 mountns04 userns01 userns01 userns02 userns02 +userns03 userns03 diff --git a/testcases/kernel/containers/.gitignore b/testcases/kernel/containers/.gitignore index e3c92c9..bd3cb9d 100644 --- a/testcases/kernel/containers/.gitignore +++ b/testcases/kernel/containers/.gitignore @@ -5,3 +5,4 @@ mountns/mountns03 mountns/mountns04 userns/userns01 userns/userns02 +userns/userns03 diff --git a/testcases/kernel/containers/userns/userns03.c b/testcases/kernel/containers/userns/userns03.c new file mode 100644 index 0000000..b5596fc --- /dev/null +++ b/testcases/kernel/containers/userns/userns03.c @@ -0,0 +1,254 @@ +/* +* Copyright (c) Huawei Technologies Co., Ltd., 2015 +* 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. +*/ + +/* +* Verify that: +* /proc/PID/uid_map and /proc/PID/gid_map contains three values separated by +* white space: +* ID-inside-ns ID-outside-ns length +* +* ID-outside-ns is interpreted according to which process is opening the file. +* If the process opening the file is in the same user namespace as the process +* PID, then ID-outside-ns is defined with respect to the parent user namespace. +* If the process opening the file is in a different user namespace, then +* ID-outside-ns is defined with respect to the user namespace of the process +* opening the file. +*/ + +#define _GNU_SOURCE +#include +#include +#include +#include +#include +#include +#include +#include +#include "test.h" +#include "libclone.h" +#include "userns_helper.h" + +char *TCID = "user_namespace3"; +int TST_TOTAL = 1; +static int cpid1, parentuid, parentgid; +static bool setgroupstag = true; + +#define CHILD1UID 0 +#define CHILD1GID 0 +#define CHILD2UID 200 +#define CHILD2GID 200 +#define UID_MAP 0 +#define GID_MAP 1 +#define UID_MAP 0 +#define GID_MAP 1 + +/* + * child_fn1() - Inside a new user namespace + */ +static int child_fn1(void) +{ + TST_SAFE_CHECKPOINT_WAKE_AND_WAIT(NULL, 0); + return 0; +} + + +/* + * child_fn2() - Inside a new user namespace + */ +static int child_fn2(void) +{ + int exit_val; + int uid, gid; + char cpid1uidpath[BUFSIZ]; + char cpid1gidpath[BUFSIZ]; + int idinsidens, idoutsidens, length; + + uid = geteuid(); + gid = getegid(); + + if (uid == CHILD2UID) { + printf("Got expected uid.\n"); + exit_val = 0; + } else { + printf("unexpected uid=%d\n", uid); + exit_val = 1; + } + + if (setgroupstag == false) { + if (gid == CHILD2GID) { + printf("Got expected gid.\n"); + exit_val = 0; + } else { + printf("unexpected: gid=%d\n", gid); + exit_val = 1; + } + } + /*Get the uid parameters of the child_fn2 process.*/ + SAFE_FILE_SCANF(NULL, "/proc/self/uid_map", "%d %d %d", &idinsidens, + &idoutsidens, &length); + + /* map file format:ID-inside-ns ID-outside-ns length + If the process opening the file is in the same user namespace as + the process PID, then ID-outside-ns is defined with respect to the + parent user namespace.*/ + if (idinsidens != CHILD2UID || idoutsidens != parentuid) { + printf("child_fn2 checks /proc/cpid2/uid_map:\n"); + printf("unexpected: idinsidens=%d idoutsidens=%d\n", + idinsidens, idoutsidens); + exit_val = 1; + } + + sprintf(cpid1uidpath, "/proc/%d/uid_map", cpid1); + SAFE_FILE_SCANF(NULL, cpid1uidpath, "%d %d %d", &idinsidens, + &idoutsidens, &length); + + /* If the process opening the file is in a different user namespace, + then ID-outside-ns is defined with respect to the user namespace + of the process opening the file.*/ + if (idinsidens != CHILD1UID || idoutsidens != CHILD2UID) { + printf("child_fn2 checks /proc/cpid1/uid_map:\n"); + printf("unexpected: idinsidens=%d idoutsidens=%d\n", + idinsidens, idoutsidens); + exit_val = 1; + } + + if (setgroupstag == false) { + sprintf(cpid1gidpath, "/proc/%d/gid_map", cpid1); + SAFE_FILE_SCANF(NULL, "/proc/self/gid_map", "%d %d %d", + &idinsidens, &idoutsidens, &length); + + if (idinsidens != CHILD2GID || idoutsidens != parentgid) { + printf("child_fn2 checks /proc/cpid2/gid_map:\n"); + printf("unexpected: idinsidens=%d idoutsidens=%d\n", + idinsidens, idoutsidens); + exit_val = 1; + } + + SAFE_FILE_SCANF(NULL, cpid1gidpath, "%d %d %d", &idinsidens, + &idoutsidens, &length); + + if (idinsidens != CHILD1GID || idoutsidens != CHILD2GID) { + printf("child_fn1 checks /proc/cpid1/gid_map:\n"); + printf("unexpected: idinsidens=%d idoutsidens=%d\n", + idinsidens, idoutsidens); + exit_val = 1; + } + } + TST_SAFE_CHECKPOINT_WAKE_AND_WAIT(NULL, 1); + return exit_val; +} + + +static void setup(void) +{ + char read_buf[BUFSIZ]; + + check_newuser(); + tst_tmpdir(); + TST_CHECKPOINT_INIT(NULL); + if (access("/proc/self/setgroups", F_OK) == 0) { + SAFE_FILE_SCANF(NULL, "/proc/self/setgroups", "%s", read_buf); + if (strcmp(read_buf, "deny") == 0) + setgroupstag = false; + } +} + +static void cleanup(void) +{ + tst_rmdir(); +} + +static int updatemap(int cpid, bool type, int idnum, int parentmappid) +{ + char path[BUFSIZ]; + char content[BUFSIZ]; + int fd; + + if (type == UID_MAP) + sprintf(path, "/proc/%d/uid_map", cpid); + else if (type == GID_MAP) + sprintf(path, "/proc/%d/gid_map", cpid); + else + tst_brkm(TFAIL, cleanup, "invalid type parameter"); + + sprintf(content, "%d %d 1", idnum, parentmappid); + fd = SAFE_OPEN(NULL, path, O_WRONLY, 0644); + SAFE_WRITE(cleanup, 1, fd, content, strlen(content)); + SAFE_CLOSE(cleanup, fd); + return 0; +} + +int main(int argc, char *argv[]) +{ + pid_t cpid2; + int cpid1status, cpid2status; + int lc; + + tst_parse_opts(argc, argv, NULL, NULL); + setup(); + + for (lc = 0; TEST_LOOPING(lc); lc++) { + tst_count = 0; + + parentuid = geteuid(); + parentgid = getegid(); + + cpid1 = ltp_clone_quick(CLONE_NEWUSER | SIGCHLD, + (void *)child_fn1, NULL); + if (cpid1 < 0) + tst_brkm(TFAIL | TERRNO, cleanup, + "cpid1 clone failed"); + + cpid2 = ltp_clone_quick(CLONE_NEWUSER | SIGCHLD, + (void *)child_fn2, NULL); + if (cpid2 < 0) + tst_brkm(TFAIL | TERRNO, cleanup, + "cpid2 clone failed"); + + updatemap(cpid1, 0, CHILD1UID, parentuid); + updatemap(cpid2, 0, CHILD2UID, parentuid); + + if (setgroupstag == false) { + updatemap(cpid1, 1, CHILD1GID, parentuid); + updatemap(cpid2, 1, CHILD2GID, parentuid); + } + + TST_SAFE_CHECKPOINT_WAIT(cleanup, 0); + TST_SAFE_CHECKPOINT_WAIT(cleanup, 1); + TST_SAFE_CHECKPOINT_WAKE(cleanup, 0); + TST_SAFE_CHECKPOINT_WAKE(cleanup, 1); + + if ((waitpid(cpid1, &cpid1status, 0) < 0) || + (waitpid(cpid2, &cpid2status, 0) < 0)) + tst_brkm(TBROK | TERRNO, cleanup, + "parent: waitpid failed."); + + if (WIFSIGNALED(cpid1status)) { + tst_resm(TFAIL, "child1 was killed with signal = %d", + WTERMSIG(cpid1status)); + } else if (WIFEXITED(cpid1status) && + WEXITSTATUS(cpid1status) != 0) { + tst_resm(TFAIL, "child1 exited abnormally"); + } + + if (WIFSIGNALED(cpid2status)) { + tst_resm(TFAIL, "child2 was killed with signal = %d", + WTERMSIG(cpid2status)); + } else if (WIFEXITED(cpid2status) && + WEXITSTATUS(cpid2status) != 0) { + tst_resm(TFAIL, "child2 exited abnormally"); + } else + tst_resm(TPASS, "test pass"); + } + cleanup(); + tst_exit(); +} -- 1.9.1 ------------------------------------------------------------------------------ _______________________________________________ Ltp-list mailing list Ltp-list@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ltp-list