143 lines
3.5 KiB
C
143 lines
3.5 KiB
C
/*
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* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
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* The President and Fellows of Harvard College.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Invalid calls to dup2
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <limits.h>
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#include <errno.h>
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#include <err.h>
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#include "config.h"
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#include "test.h"
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static
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void
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dup2_fd2(int fd, const char *desc)
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{
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int rv;
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report_begin("%s", desc);
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rv = dup2(STDIN_FILENO, fd);
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report_check(rv, errno, EBADF);
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if (rv != -1) {
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close(fd); /* just in case */
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}
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}
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static
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void
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dup2_self(void)
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{
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struct stat sb;
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int rv;
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int testfd;
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/* use fd that isn't in use */
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testfd = CLOSED_FD;
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report_begin("copying stdin to test with");
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rv = dup2(STDIN_FILENO, testfd);
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if (rv == -1) {
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report_result(rv, errno);
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report_aborted();
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return;
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}
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report_begin("dup2 to same fd");
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rv = dup2(testfd, testfd);
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if (rv == testfd) {
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report_passed();
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}
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else if (rv<0) {
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report_result(rv, errno);
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report_failure();
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}
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else {
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report_warnx("returned %d instead", rv);
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report_failure();
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}
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report_begin("fstat fd after dup2 to itself");
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rv = fstat(testfd, &sb);
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if (errno == ENOSYS) {
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report_saw_enosys();
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}
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report_result(rv, errno);
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if (rv==0) {
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report_passed();
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}
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else if (errno != ENOSYS) {
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report_failure();
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}
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else {
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report_skipped();
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/* no support for fstat; try lseek */
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report_begin("lseek fd after dup2 to itself");
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rv = lseek(testfd, 0, SEEK_CUR);
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report_result(rv, errno);
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if (rv==0 || (rv==-1 && errno==ESPIPE)) {
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report_passed();
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}
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else {
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report_failure();
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}
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}
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close(testfd);
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}
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void
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test_dup2(void)
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{
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/* This does the first fd. */
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test_dup2_fd();
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/* Any interesting cases added here should also go in common_fds.c */
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dup2_fd2(-1, "dup2 to -1");
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dup2_fd2(-5, "dup2 to -5");
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dup2_fd2(IMPOSSIBLE_FD, "dup2 to impossible fd");
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#ifdef OPEN_MAX
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dup2_fd2(OPEN_MAX, "dup2 to OPEN_MAX");
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#else
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warnx("Warning: OPEN_MAX not defined - test skipped");
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#endif
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dup2_self();
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}
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