Add a test program for popen().
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Jilles Tjoelker
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86b75745ad
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# $FreeBSD$
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TESTS= test-arc4random test-fmtcheck test-fmtmsg test-fnmatch \
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test-fpclassify test-ftw test-posix_spawn test-wordexp
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test-fpclassify test-ftw test-popen test-posix_spawn test-wordexp
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.PHONY: tests
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tests: ${TESTS}
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227
tools/regression/lib/libc/gen/test-popen.c
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227
tools/regression/lib/libc/gen/test-popen.c
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/*-
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* Copyright (c) 2013 Jilles Tjoelker
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* Limited test program for popen() as specified by IEEE Std. 1003.1-2008,
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* with BSD extensions.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/wait.h>
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#include <assert.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.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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static int failures;
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static volatile sig_atomic_t got_sigpipe;
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static void
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sigpipe_handler(int sig __unused)
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{
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got_sigpipe = 1;
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}
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static void
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check_cloexec(FILE *fp, const char *mode)
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{
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int flags;
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flags = fcntl(fileno(fp), F_GETFD);
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if (flags == -1)
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fprintf(stderr, "fcntl(F_GETFD) failed\n"), failures++;
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else if ((flags & FD_CLOEXEC) !=
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(strchr(mode, 'e') != NULL ? FD_CLOEXEC : 0))
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fprintf(stderr, "Bad cloexec flag\n"), failures++;
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}
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int
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main(int argc, char *argv[])
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{
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FILE *fp, *fp2;
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int i, j, status;
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const char *mode;
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const char *allmodes[] = { "r", "w", "r+" };
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const char *rmodes[] = { "r", "r+" };
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const char *wmodes[] = { "w", "r+" };
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const char *rwmodes[] = { "r+" };
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char buf[80];
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struct sigaction act, oact;
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for (i = 0; i < sizeof(allmodes) / sizeof(allmodes[0]); i++) {
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mode = allmodes[i];
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fp = popen("exit 7", mode);
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if (fp == NULL) {
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fprintf(stderr, "popen(, \"%s\") failed", mode);
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failures++;
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continue;
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}
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check_cloexec(fp, mode);
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status = pclose(fp);
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if (!WIFEXITED(status) || WEXITSTATUS(status) != 7)
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fprintf(stderr, "Bad exit status (no I/O)\n"), failures++;
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}
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for (i = 0; i < sizeof(rmodes) / sizeof(rmodes[0]); i++) {
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mode = rmodes[i];
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fp = popen("exit 9", mode);
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if (fp == NULL) {
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fprintf(stderr, "popen(, \"%s\") failed", mode);
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failures++;
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continue;
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}
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check_cloexec(fp, mode);
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if (fgetc(fp) != EOF || !feof(fp) || ferror(fp))
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fprintf(stderr, "Input error 1\n"), failures++;
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status = pclose(fp);
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if (!WIFEXITED(status) || WEXITSTATUS(status) != 9)
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fprintf(stderr, "Bad exit status (input)\n"), failures++;
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}
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for (i = 0; i < sizeof(rmodes) / sizeof(rmodes[0]); i++) {
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mode = rmodes[i];
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fp = popen("echo hi there", mode);
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if (fp == NULL) {
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fprintf(stderr, "popen(, \"%s\") failed", mode);
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failures++;
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continue;
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}
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check_cloexec(fp, mode);
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if (fgets(buf, sizeof(buf), fp) == NULL)
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fprintf(stderr, "Input error 2\n"), failures++;
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else if (strcmp(buf, "hi there\n") != 0)
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fprintf(stderr, "Bad input 1\n"), failures++;
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status = pclose(fp);
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if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
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fprintf(stderr, "Bad exit status (input)\n"), failures++;
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}
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for (i = 0; i < sizeof(wmodes) / sizeof(wmodes[0]); i++) {
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mode = wmodes[i];
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fp = popen("read x && [ \"$x\" = abcd ]", mode);
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if (fp == NULL) {
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fprintf(stderr, "popen(, \"%s\") failed", mode);
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failures++;
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continue;
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}
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check_cloexec(fp, mode);
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if (fputs("abcd\n", fp) == EOF)
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fprintf(stderr, "Output error 1\n"), failures++;
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status = pclose(fp);
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if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
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fprintf(stderr, "Bad exit status (output)\n"), failures++;
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}
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act.sa_handler = sigpipe_handler;
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act.sa_flags = SA_RESTART;
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sigemptyset(&act.sa_mask);
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if (sigaction(SIGPIPE, &act, &oact) == -1)
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fprintf(stderr, "sigaction() failed\n"), failures++;
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for (i = 0; i < sizeof(wmodes) / sizeof(wmodes[0]); i++) {
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mode = wmodes[i];
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fp = popen("exit 88", mode);
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if (fp == NULL) {
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fprintf(stderr, "popen(, \"%s\") failed", mode);
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failures++;
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continue;
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}
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check_cloexec(fp, mode);
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got_sigpipe = 0;
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while (fputs("abcd\n", fp) != EOF)
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;
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if (!ferror(fp) || errno != EPIPE)
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fprintf(stderr, "Expected EPIPE\n"), failures++;
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if (!got_sigpipe)
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fprintf(stderr, "Expected SIGPIPE\n"), failures++;
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status = pclose(fp);
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if (!WIFEXITED(status) || WEXITSTATUS(status) != 88)
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fprintf(stderr, "Bad exit status (EPIPE)\n"), failures++;
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}
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if (sigaction(SIGPIPE, &oact, NULL) == -1)
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fprintf(stderr, "sigaction() failed\n"), failures++;
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for (i = 0; i < sizeof(rwmodes) / sizeof(rwmodes[0]); i++) {
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mode = rwmodes[i];
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fp = popen("read x && printf '%s\\n' \"Q${x#a}\"", mode);
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if (fp == NULL) {
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fprintf(stderr, "popen(, \"%s\") failed", mode);
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failures++;
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continue;
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}
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check_cloexec(fp, mode);
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if (fputs("abcd\n", fp) == EOF)
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fprintf(stderr, "Output error 2\n"), failures++;
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if (fgets(buf, sizeof(buf), fp) == NULL)
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fprintf(stderr, "Input error 3\n"), failures++;
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else if (strcmp(buf, "Qbcd\n") != 0)
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fprintf(stderr, "Bad input 2\n"), failures++;
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status = pclose(fp);
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if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
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fprintf(stderr, "Bad exit status (I/O)\n"), failures++;
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}
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for (i = 0; i < sizeof(wmodes) / sizeof(wmodes[0]); i++) {
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for (j = 0; j < sizeof(wmodes) / sizeof(wmodes[0]); j++) {
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mode = wmodes[i];
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fp = popen("read x", mode);
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if (fp == NULL) {
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fprintf(stderr, "popen(, \"%s\") failed", mode);
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failures++;
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continue;
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}
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mode = wmodes[j];
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fp2 = popen("read x", mode);
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if (fp2 == NULL) {
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fprintf(stderr, "popen(, \"%s\") failed", mode);
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failures++;
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pclose(fp);
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continue;
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}
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/* If fp2 inherits fp's pipe, we will deadlock here. */
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status = pclose(fp);
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if (!WIFEXITED(status) || WEXITSTATUS(status) != 1) {
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fprintf(stderr, "Bad exit status (2 pipes)\n");
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failures++;
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}
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status = pclose(fp2);
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if (!WIFEXITED(status) || WEXITSTATUS(status) != 1) {
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fprintf(stderr, "Bad exit status (2 pipes)\n");
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failures++;
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}
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}
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}
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if (failures == 0)
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printf("PASS popen()\n");
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return (failures != 0);
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}
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