diff options
Diffstat (limited to 'regress/lib/libc/sys/t_dup.c')
| -rw-r--r-- | regress/lib/libc/sys/t_dup.c | 395 |
1 files changed, 395 insertions, 0 deletions
diff --git a/regress/lib/libc/sys/t_dup.c b/regress/lib/libc/sys/t_dup.c new file mode 100644 index 00000000000..4021a4f6e4f --- /dev/null +++ b/regress/lib/libc/sys/t_dup.c @@ -0,0 +1,395 @@ +/* $OpenBSD: t_dup.c,v 1.1.1.1 2019/11/19 19:57:03 bluhm Exp $ */ +/* $NetBSD: t_dup.c,v 1.9 2017/01/13 20:31:53 christos Exp $ */ + +/*- + * Copyright (c) 2011 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Jukka Ruohonen. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include "macros.h" + +#include <sys/cdefs.h> +__RCSID("$NetBSD: t_dup.c,v 1.9 2017/01/13 20:31:53 christos Exp $"); + +#include <sys/resource.h> +#include <sys/stat.h> +#include <sys/wait.h> + +#include "atf-c.h" +#include <errno.h> +#include <fcntl.h> +#include <limits.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sysexits.h> + +static char path[] = "dup"; +static void check_mode(bool, bool, bool); + +static void +check_mode(bool _dup, bool _dup2, bool _dup3) +{ + int mode[3] = { O_RDONLY, O_WRONLY, O_RDWR }; + int perm[5] = { 0700, 0400, 0600, 0444, 0666 }; + struct stat st, st1; + int fd, fd1, fd2; + size_t i, j; + + /* + * Check that a duplicated descriptor + * retains the mode of the original file. + */ + for (i = 0; i < __arraycount(mode); i++) { + + for (j = 0; j < __arraycount(perm); j++) { + + fd1 = open(path, mode[i] | O_CREAT, perm[j]); + fd2 = open("/etc/passwd", O_RDONLY); + + ATF_REQUIRE(fd1 >= 0); + ATF_REQUIRE(fd2 >= 0); + + if (_dup != false) + fd = dup(fd1); + else if (_dup2 != false) + fd = dup2(fd1, fd2); + else if (_dup3 != false) + fd = dup3(fd1, fd2, O_CLOEXEC); + else { + fd = -1; + } + + ATF_REQUIRE(fd >= 0); + + (void)memset(&st, 0, sizeof(struct stat)); + (void)memset(&st1, 0, sizeof(struct stat)); + + ATF_REQUIRE(fstat(fd, &st) == 0); + ATF_REQUIRE(fstat(fd1, &st1) == 0); + + if (st.st_mode != st1.st_mode) + atf_tc_fail("invalid mode"); + + (void)close(fd); + (void)close(fd1); + (void)close(fd2); + (void)unlink(path); + } + } +} + +ATF_TC(dup2_basic); +ATF_TC_HEAD(dup2_basic, tc) +{ + atf_tc_set_md_var(tc, "descr", "A basic test of dup2(2)"); +} + +ATF_TC_BODY(dup2_basic, tc) +{ + int fd, fd1, fd2; + + fd1 = open("/etc/passwd", O_RDONLY); + fd2 = open("/etc/passwd", O_RDONLY); + + ATF_REQUIRE(fd1 >= 0); + ATF_REQUIRE(fd2 >= 0); + + fd = dup2(fd1, fd2); + ATF_REQUIRE(fd >= 0); + + if (fd != fd2) + atf_tc_fail("invalid descriptor"); + + (void)close(fd); + (void)close(fd1); + + ATF_REQUIRE(close(fd2) != 0); +} + +ATF_TC(dup2_err); +ATF_TC_HEAD(dup2_err, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test error conditions of dup2(2)"); +} + +ATF_TC_BODY(dup2_err, tc) +{ + int fd; + + fd = open("/etc/passwd", O_RDONLY); + ATF_REQUIRE(fd >= 0); + + errno = 0; + ATF_REQUIRE_ERRNO(EBADF, dup2(-1, -1) == -1); + + errno = 0; + ATF_REQUIRE_ERRNO(EBADF, dup2(fd, -1) == -1); + + errno = 0; + ATF_REQUIRE_ERRNO(EBADF, dup2(-1, fd) == -1); + + /* + * Note that this should not fail with EINVAL. + */ + ATF_REQUIRE(dup2(fd, fd) != -1); + + (void)close(fd); +} + +ATF_TC(dup2_max); +ATF_TC_HEAD(dup2_max, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test dup2(2) against limits"); +} + +ATF_TC_BODY(dup2_max, tc) +{ + struct rlimit res; + + (void)memset(&res, 0, sizeof(struct rlimit)); + (void)getrlimit(RLIMIT_NOFILE, &res); + + errno = 0; + ATF_REQUIRE_ERRNO(EBADF, dup2(STDERR_FILENO, res.rlim_cur + 1) == -1); +} + +ATF_TC_WITH_CLEANUP(dup2_mode); +ATF_TC_HEAD(dup2_mode, tc) +{ + atf_tc_set_md_var(tc, "descr", "A basic test of dup2(2)"); +} + +ATF_TC_BODY(dup2_mode, tc) +{ + check_mode(false, true, false); +} + +ATF_TC_CLEANUP(dup2_mode, tc) +{ + (void)unlink(path); +} + + +ATF_TC(dup3_err); +ATF_TC_HEAD(dup3_err, tc) +{ + atf_tc_set_md_var(tc, "descr", + "Test error conditions of dup3(2) (PR lib/45148)"); +} + +ATF_TC_BODY(dup3_err, tc) +{ + int fd; + + fd = open("/etc/passwd", O_RDONLY); + ATF_REQUIRE(fd >= 0); + + errno = 0; + /* Adjusted for OpenBSD, initially != -1 */ + ATF_REQUIRE(dup3(fd, fd, O_CLOEXEC) == -1); + + errno = 0; + /* Adjusted for OpenBSD, initially EBADF */ + ATF_REQUIRE_ERRNO(EINVAL, dup3(-1, -1, O_CLOEXEC) == -1); + + errno = 0; + ATF_REQUIRE_ERRNO(EBADF, dup3(fd, -1, O_CLOEXEC) == -1); + + errno = 0; + ATF_REQUIRE_ERRNO(EBADF, dup3(-1, fd, O_CLOEXEC) == -1); + + errno = 0; + ATF_REQUIRE_ERRNO(EINVAL, dup3(fd, 1, O_NOFOLLOW) == -1); + + (void)close(fd); +} + +ATF_TC(dup3_max); +ATF_TC_HEAD(dup3_max, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test dup3(2) against limits"); +} + +ATF_TC_BODY(dup3_max, tc) +{ + struct rlimit res; + + (void)memset(&res, 0, sizeof(struct rlimit)); + (void)getrlimit(RLIMIT_NOFILE, &res); + + errno = 0; + ATF_REQUIRE_ERRNO(EBADF, dup3(STDERR_FILENO, + res.rlim_cur + 1, O_CLOEXEC) == -1); +} + +ATF_TC_WITH_CLEANUP(dup3_mode); +ATF_TC_HEAD(dup3_mode, tc) +{ + atf_tc_set_md_var(tc, "descr", "A basic test of dup3(2)"); +} + +ATF_TC_BODY(dup3_mode, tc) +{ + check_mode(false, false, true); +} + +ATF_TC_CLEANUP(dup3_mode, tc) +{ + (void)unlink(path); +} + +ATF_TC(dup_err); +ATF_TC_HEAD(dup_err, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test error conditions of dup(2)"); +} + +ATF_TC_BODY(dup_err, tc) +{ + + errno = 0; + ATF_REQUIRE_ERRNO(EBADF, dup(-1) == -1); +} + +ATF_TC_WITH_CLEANUP(dup_max); +ATF_TC_HEAD(dup_max, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test dup(2) against limits"); +} + +ATF_TC_BODY(dup_max, tc) +{ + struct rlimit res; + int *buf, fd, sta; + size_t i, n; + pid_t pid; + + pid = fork(); + ATF_REQUIRE(pid >= 0); + + if (pid == 0) { + + /* + * Open a temporary file until the + * maximum number of open files is + * reached. Ater that dup(2) family + * should fail with EMFILE. + */ + /* Adjusted for OpenBSD, initially 0 */ + (void)closefrom(STDERR_FILENO + 1); + (void)memset(&res, 0, sizeof(struct rlimit)); + + n = 10; + res.rlim_cur = res.rlim_max = n; + if (setrlimit(RLIMIT_NOFILE, &res) != 0) + _exit(EX_OSERR); + + buf = calloc(n, sizeof(int)); + + if (buf == NULL) + _exit(EX_OSERR); + + /* Adjusted for OpenBSD, initially mkstemp(path) */ + buf[0] = open(path, O_CREAT|O_EXCL|O_RDWR, S_IRUSR|S_IWUSR); + + if (buf[0] < 0) + _exit(EX_OSERR); + + /* Adjusted for OpenBSD, initially i < n */ + for (i = 1; i < n - (STDERR_FILENO + 1); i++) { + + buf[i] = open(path, O_RDONLY); + + if (buf[i] < 0) + _exit(EX_OSERR); + } + + errno = 0; + fd = dup(buf[0]); + + if (fd != -1 || errno != EMFILE) + _exit(EX_DATAERR); + + _exit(EXIT_SUCCESS); + } + + (void)wait(&sta); + + if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS) { + + if (WEXITSTATUS(sta) == EX_OSERR) + atf_tc_fail("system call error"); + + if (WEXITSTATUS(sta) == EX_DATAERR) + atf_tc_fail("dup(2) dupped more than RLIMIT_NOFILE"); + + atf_tc_fail("unknown error"); + } + + (void)unlink(path); +} + +ATF_TC_CLEANUP(dup_max, tc) +{ + (void)unlink(path); +} + +ATF_TC_WITH_CLEANUP(dup_mode); +ATF_TC_HEAD(dup_mode, tc) +{ + atf_tc_set_md_var(tc, "descr", "A basic test of dup(2)"); +} + +ATF_TC_BODY(dup_mode, tc) +{ + check_mode(true, false, false); +} + +ATF_TC_CLEANUP(dup_mode, tc) +{ + (void)unlink(path); +} + +ATF_TP_ADD_TCS(tp) +{ + + ATF_TP_ADD_TC(tp, dup2_basic); + ATF_TP_ADD_TC(tp, dup2_err); + ATF_TP_ADD_TC(tp, dup2_max); + ATF_TP_ADD_TC(tp, dup2_mode); + ATF_TP_ADD_TC(tp, dup3_err); + ATF_TP_ADD_TC(tp, dup3_max); + ATF_TP_ADD_TC(tp, dup3_mode); + ATF_TP_ADD_TC(tp, dup_err); + ATF_TP_ADD_TC(tp, dup_max); + ATF_TP_ADD_TC(tp, dup_mode); + + return atf_no_error(); +} |