1 files changed, 309 insertions, 0 deletions

diff --git a/src/regress/lib/libc/sys/t_mkfifo.c b/src/regress/lib/libc/sys/t_mkfifo.c
new file mode 100644
index 0000000000..1c2fe60e3a
--- /dev/null
+++ b/src/regress/lib/libc/sys/t_mkfifo.c
@@ -0,0 +1,309 @@
+/*      $OpenBSD: t_mkfifo.c,v 1.1.1.1 2019/11/19 19:57:03 bluhm Exp $  */
+/* $NetBSD: t_mkfifo.c,v 1.3 2019/06/20 03:31:54 kamil 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_mkfifo.c,v 1.3 2019/06/20 03:31:54 kamil Exp $");
+
+#include <sys/stat.h>
+#include <sys/wait.h>
+
+#include "atf-c.h"
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <string.h>
+#include <unistd.h>
+
+static const char       path[] = "fifo";
+static void             support(void);
+
+static void
+support(void)
+{
+
+        errno = 0;
+
+        if (mkfifo(path, 0600) == 0) {
+                ATF_REQUIRE(unlink(path) == 0);
+                return;
+        }
+
+        if (errno == EOPNOTSUPP)
+                atf_tc_skip("the kernel does not support FIFOs");
+        else {
+                atf_tc_fail("mkfifo(2) failed");
+        }
+}
+
+ATF_TC_WITH_CLEANUP(mkfifo_block);
+ATF_TC_HEAD(mkfifo_block, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test that FIFOs block");
+}
+
+ATF_TC_BODY(mkfifo_block, tc)
+{
+        int sta, fd = -1;
+        pid_t pid;
+
+        support();
+
+        ATF_REQUIRE(mkfifo(path, 0600) == 0);
+
+        pid = fork();
+        ATF_REQUIRE(pid >= 0);
+
+        if (pid == 0) {
+
+                /*
+                 * If we open the FIFO as read-only (write-only),
+                 * the call should block until another process
+                 * opens the FIFO for writing (reading).
+                 */
+                fd = open(path, O_RDONLY);
+
+                _exit(EXIT_FAILURE); /* NOTREACHED */
+        }
+
+        (void)sleep(1);
+
+        ATF_REQUIRE(kill(pid, SIGKILL) == 0);
+
+        (void)wait(&sta);
+
+        if (WIFSIGNALED(sta) == 0 || WTERMSIG(sta) != SIGKILL)
+                atf_tc_fail("FIFO did not block");
+
+        (void)close(fd);
+        (void)unlink(path);
+}
+
+ATF_TC_CLEANUP(mkfifo_block, tc)
+{
+        (void)unlink(path);
+}
+
+ATF_TC_WITH_CLEANUP(mkfifo_err);
+ATF_TC_HEAD(mkfifo_err, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test erros from mkfifo(2)");
+}
+
+ATF_TC_BODY(mkfifo_err, tc)
+{
+        char buf[PATH_MAX + 1];
+
+        support();
+
+        (void)memset(buf, 'x', sizeof(buf));
+        ATF_REQUIRE(mkfifo(path, 0600) == 0);
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(EFAULT, mkfifo((char *)-1, 0600) == -1);
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(EEXIST, mkfifo("/etc/passwd", 0600) == -1);
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(EEXIST, mkfifo(path, 0600) == -1);
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(ENAMETOOLONG, mkfifo(buf, 0600) == -1);
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(ENOENT, mkfifo("/a/b/c/d/e/f/g", 0600) == -1);
+
+        ATF_REQUIRE(unlink(path) == 0);
+}
+
+ATF_TC_CLEANUP(mkfifo_err, tc)
+{
+        (void)unlink(path);
+}
+
+ATF_TC_WITH_CLEANUP(mkfifo_nonblock);
+ATF_TC_HEAD(mkfifo_nonblock, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test O_NONBLOCK with FIFOs");
+}
+
+ATF_TC_BODY(mkfifo_nonblock, tc)
+{
+        int fd, sta;
+        pid_t pid;
+
+        support();
+
+        fd = -1;
+        ATF_REQUIRE(mkfifo(path, 0600) == 0);
+
+        pid = fork();
+        ATF_REQUIRE(pid >= 0);
+
+        if (pid == 0) {
+
+                /*
+                 * If we open the FIFO as O_NONBLOCK, the O_RDONLY
+                 * call should return immediately, whereas the call
+                 * for write-only should fail with ENXIO.
+                 */
+                fd = open(path, O_RDONLY | O_NONBLOCK);
+
+                if (fd >= 0)
+                        _exit(EXIT_SUCCESS);
+
+                (void)pause();  /* NOTREACHED */
+        }
+
+        (void)sleep(1);
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(ENXIO, open(path, O_WRONLY | O_NONBLOCK) == -1);
+
+        (void)kill(pid, SIGKILL);
+        (void)wait(&sta);
+
+        if (WIFSIGNALED(sta) != 0 || WTERMSIG(sta) == SIGKILL)
+                atf_tc_fail("FIFO blocked for O_NONBLOCK open(2)");
+
+        (void)close(fd);
+        (void)unlink(path);
+}
+
+ATF_TC_CLEANUP(mkfifo_nonblock, tc)
+{
+        (void)unlink(path);
+}
+
+ATF_TC_WITH_CLEANUP(mkfifo_perm);
+ATF_TC_HEAD(mkfifo_perm, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test permissions with mkfifo(2)");
+        atf_tc_set_md_var(tc, "require.user", "unprivileged");
+}
+
+ATF_TC_BODY(mkfifo_perm, tc)
+{
+
+        support();
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(EACCES, mkfifo("/root/fifo", 0600) == -1);
+
+        ATF_REQUIRE(mkfifo(path, 0600) == 0);
+
+        /*
+         * For some reason this fails with EFTYPE...
+         */
+        errno = 0;
+        ATF_REQUIRE_ERRNO(EFTYPE, chmod(path, 1777) == -1);
+
+        ATF_REQUIRE(unlink(path) == 0);
+}
+
+ATF_TC_CLEANUP(mkfifo_perm, tc)
+{
+        (void)unlink(path);
+}
+
+ATF_TC_WITH_CLEANUP(mkfifo_stat);
+ATF_TC_HEAD(mkfifo_stat, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test mkfifo(2) with stat");
+}
+
+ATF_TC_BODY(mkfifo_stat, tc)
+{
+        struct stat st;
+
+        support();
+
+        (void)memset(&st, 0, sizeof(struct stat));
+
+        ATF_REQUIRE(mkfifo(path, 0600) == 0);
+        ATF_REQUIRE(stat(path, &st) == 0);
+
+        if (S_ISFIFO(st.st_mode) == 0)
+                atf_tc_fail("invalid mode from mkfifo(2)");
+
+        ATF_REQUIRE(unlink(path) == 0);
+}
+
+ATF_TC_CLEANUP(mkfifo_stat, tc)
+{
+        (void)unlink(path);
+}
+
+ATF_TC_WITH_CLEANUP(mknod_s_ififo);
+ATF_TC_HEAD(mknod_s_ififo, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test mknod(2) with S_IFIFO");
+}
+
+ATF_TC_BODY(mknod_s_ififo, tc)
+{
+        struct stat st;
+
+        support();
+
+        (void)memset(&st, 0, sizeof(struct stat));
+
+        ATF_REQUIRE(mknod(path, S_IFIFO | 0600, 0) == 0);
+        ATF_REQUIRE(stat(path, &st) == 0);
+
+        if (S_ISFIFO(st.st_mode) == 0)
+                atf_tc_fail("invalid mode from mknod(2) with S_IFIFO");
+
+        ATF_REQUIRE(unlink(path) == 0);
+}
+
+ATF_TC_CLEANUP(mknod_s_ififo, tc)
+{
+        (void)unlink(path);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+        ATF_TP_ADD_TC(tp, mkfifo_block);
+        ATF_TP_ADD_TC(tp, mkfifo_err);
+        ATF_TP_ADD_TC(tp, mkfifo_nonblock);
+        ATF_TP_ADD_TC(tp, mkfifo_perm);
+        ATF_TP_ADD_TC(tp, mkfifo_stat);
+        ATF_TP_ADD_TC(tp, mknod_s_ififo);
+
+        return atf_no_error();
+}