| /* |
| * Copyright (C) 2013 Linux Test Project, Inc. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of version 2 of the GNU General Public |
| * License as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * Further, this software is distributed without any warranty that it |
| * is free of the rightful claim of any third person regarding |
| * infringement or the like. Any license provided herein, whether |
| * implied or otherwise, applies only to this software file. Patent |
| * licenses, if any, provided herein do not apply to combinations of |
| * this program with other software, or any other product whatsoever. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| * 02110-1301, USA. |
| */ |
| /* |
| * errno tests for setns(2) - reassociate thread with a namespace |
| */ |
| #define _GNU_SOURCE |
| #include <sys/stat.h> |
| #include <sys/syscall.h> |
| #include <sys/types.h> |
| #include <errno.h> |
| #include <sched.h> |
| #include <pwd.h> |
| #include <string.h> |
| #include "config.h" |
| #include "test.h" |
| #include "linux_syscall_numbers.h" |
| #include "safe_macros.h" |
| |
| char *TCID = "setns01"; |
| |
| #if defined(__NR_setns) |
| #include "setns.h" |
| |
| struct testcase_t { |
| const char *msg; |
| int fd; |
| int ns_type; |
| int exp_ret; |
| int exp_errno; |
| int skip; |
| void (*setup) (struct testcase_t *, int i); |
| void (*cleanup) (struct testcase_t *); |
| }; |
| |
| static void setup(void); |
| static void cleanup(void); |
| static void setup0(struct testcase_t *, int); |
| static void setup1(struct testcase_t *, int); |
| static void setup2(struct testcase_t *, int); |
| static void setup3(struct testcase_t *, int); |
| static void setup4(struct testcase_t *, int); |
| static void cleanup1(struct testcase_t *); |
| static void cleanup4(struct testcase_t *); |
| |
| struct testcase_t tdat[] = { |
| { |
| .msg = "invalid fd", |
| .fd = -1, |
| .exp_ret = -1, |
| .exp_errno = EBADF, |
| .setup = setup0, |
| }, |
| { |
| .msg = "regular file fd", |
| .exp_ret = -1, |
| .exp_errno = EINVAL, |
| .setup = setup1, |
| .cleanup = cleanup1 |
| }, |
| { |
| .msg = "invalid ns_type", |
| .ns_type = -1, |
| .exp_ret = -1, |
| .exp_errno = EINVAL, |
| .setup = setup2, |
| }, |
| { |
| .msg = "mismatch ns_type/fd", |
| .exp_ret = -1, |
| .exp_errno = EINVAL, |
| .setup = setup3, |
| }, |
| { |
| .msg = "without CAP_SYS_ADMIN", |
| .exp_ret = -1, |
| .exp_errno = EPERM, |
| .setup = setup4, |
| .cleanup = cleanup4, |
| } |
| }; |
| |
| static int TST_TOTAL = sizeof(tdat) / sizeof(tdat[0]); |
| static const char nobody_uid[] = "nobody"; |
| static struct passwd *ltpuser; |
| |
| static void setup0(struct testcase_t *t, int i) |
| { |
| t->ns_type = ns_types[i]; |
| } |
| |
| static void setup1(struct testcase_t *t, int i) |
| { |
| t->ns_type = ns_types[i]; |
| t->fd = open("dummy", O_RDWR|O_CREAT, 0600); |
| if (t->fd == -1) |
| tst_brkm(TFAIL|TERRNO, cleanup, "setup1:open failed"); |
| unlink("dummy"); |
| } |
| |
| static void cleanup1(struct testcase_t *t) |
| { |
| close(t->fd); |
| } |
| |
| static void setup2(struct testcase_t *t, int i) |
| { |
| t->fd = ns_fds[i]; |
| } |
| |
| static void setup3(struct testcase_t *t, int i) |
| { |
| if (ns_total < 2) { |
| t->skip = 1; |
| return; |
| } |
| |
| t->fd = ns_fds[i]; |
| t->ns_type = ns_types[(i+1) % ns_total]; |
| } |
| |
| static void setup4(struct testcase_t *t, int i) |
| { |
| if (seteuid(ltpuser->pw_uid) == -1) |
| tst_brkm(TBROK | TERRNO, NULL, "seteuid failed"); |
| |
| t->fd = ns_fds[i]; |
| t->ns_type = ns_types[i]; |
| } |
| |
| static void cleanup4(struct testcase_t *t) |
| { |
| if (seteuid(0) == -1) |
| tst_brkm(TBROK | TERRNO, NULL, "seteuid restore failed"); |
| } |
| |
| static void test_setns(struct testcase_t *t) |
| { |
| int ret, i; |
| |
| for (i = 0; i < ns_total; i++) { |
| if (t->setup) |
| t->setup(t, i); |
| |
| if (t->skip) { |
| tst_resm(TINFO, "skip %s", tdat->msg); |
| continue; |
| } |
| |
| tst_resm(TINFO, "setns(%d, 0x%x)", t->fd, t->ns_type); |
| ret = syscall(__NR_setns, t->fd, t->ns_type); |
| if (ret == t->exp_ret) { |
| if (ret == -1 && errno == t->exp_errno) |
| tst_resm(TPASS, "%s exp_errno=%d", t->msg, |
| t->exp_errno); |
| else |
| tst_resm(TFAIL|TERRNO, "%s exp_errno=%d", |
| t->msg, t->exp_errno); |
| } else { |
| tst_resm(TFAIL, "%s ret=%d expected=%d", t->msg, |
| ret, t->exp_ret); |
| } |
| |
| if (t->cleanup) |
| t->cleanup(t); |
| } |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| int lc, testno; |
| const char *msg; |
| |
| msg = parse_opts(argc, argv, NULL, NULL); |
| if (msg != NULL) |
| tst_brkm(TBROK, tst_exit, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| for (testno = 0; testno < TST_TOTAL; testno++) |
| test_setns(&tdat[testno]); |
| } |
| cleanup(); |
| tst_exit(); |
| } |
| |
| static void setup(void) |
| { |
| tst_require_root(NULL); |
| |
| /* runtime check if syscall is supported */ |
| ltp_syscall(__NR_setns, -1, 0); |
| |
| init_available_ns(); |
| if (ns_total == 0) |
| tst_brkm(TCONF, NULL, "no ns types/proc entries"); |
| |
| ltpuser = getpwnam(nobody_uid); |
| if (ltpuser == NULL) |
| tst_brkm(TBROK | TERRNO, NULL, "getpwnam failed"); |
| |
| |
| tst_tmpdir(); |
| TEST_PAUSE; |
| } |
| |
| static void cleanup(void) |
| { |
| close_ns_fds(); |
| tst_rmdir(); |
| } |
| #else |
| int main(int argc, char *argv[]) |
| { |
| tst_brkm(TCONF, NULL, "__NR_setns is not defined on your system."); |
| |
| } |
| #endif |