1 files changed, 384 insertions, 0 deletions

diff --git a/src/regress/lib/libc/sys/t_msgsnd.c b/src/regress/lib/libc/sys/t_msgsnd.c
new file mode 100644
index 0000000000..ab0cc87e6f
--- /dev/null
+++ b/src/regress/lib/libc/sys/t_msgsnd.c
@@ -0,0 +1,384 @@
+/*      $OpenBSD: t_msgsnd.c,v 1.1.1.1 2019/11/19 19:57:04 bluhm Exp $  */
+/* $NetBSD: t_msgsnd.c,v 1.4 2017/10/08 08:31:05 kre 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_msgsnd.c,v 1.4 2017/10/08 08:31:05 kre Exp $");
+
+#include <sys/msg.h>
+#include <sys/stat.h>
+#include <sys/sysctl.h>
+#include <sys/wait.h>
+
+#include "atf-c.h"
+#include <errno.h>
+#include <limits.h>
+#include <pwd.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <time.h>
+#include <unistd.h>
+
+#define MSG_KEY         1234
+#define MSG_MTYPE_1     0x41
+#define MSG_MTYPE_2     0x42
+#define MSG_MTYPE_3     0x43
+
+struct msg {
+        long             mtype;
+        char             buf[3];
+};
+
+static void             clean(void);
+
+static void
+clean(void)
+{
+        int id;
+
+        if ((id = msgget(MSG_KEY, 0)) != -1)
+                (void)msgctl(id, IPC_RMID, 0);
+}
+
+ATF_TC_WITH_CLEANUP(msgsnd_block);
+ATF_TC_HEAD(msgsnd_block, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test that msgsnd(2) blocks");
+        atf_tc_set_md_var(tc, "timeout", "10");
+}
+
+ATF_TC_BODY(msgsnd_block, tc)
+{
+        struct msg msg = { MSG_MTYPE_1, { 'a', 'b', 'c' } };
+        int id, sta;
+        pid_t pid;
+
+        id = msgget(MSG_KEY, IPC_CREAT | 0600);
+        ATF_REQUIRE(id != -1);
+
+        pid = fork();
+        ATF_REQUIRE(pid >= 0);
+
+        if (pid == 0) {
+
+                /*
+                 * Enqueue messages until some limit (e.g. the maximum
+                 * number of messages in the queue or the maximum number
+                 * of bytes in the queue) is reached. After this the call
+                 * should block when the IPC_NOWAIT is not set.
+                 */
+                for (;;) {
+
+                        if (msgsnd(id, &msg, sizeof(struct msg), 0) < 0)
+                                _exit(EXIT_FAILURE);
+                }
+        }
+
+        (void)sleep(2);
+        (void)kill(pid, SIGKILL);
+        (void)wait(&sta);
+
+        if (WIFEXITED(sta) != 0 || WIFSIGNALED(sta) == 0)
+                atf_tc_fail("msgsnd(2) did not block");
+
+        ATF_REQUIRE(msgctl(id, IPC_RMID, 0) == 0);
+}
+
+ATF_TC_CLEANUP(msgsnd_block, tc)
+{
+        clean();
+}
+
+ATF_TC_WITH_CLEANUP(msgsnd_count);
+ATF_TC_HEAD(msgsnd_count, tc)
+{
+        atf_tc_set_md_var(tc, "descr",
+            "Test that msgsnd(2) increments the amount of "
+            "message in the queue, as given by msgctl(2)");
+        atf_tc_set_md_var(tc, "timeout", "10");
+}
+
+ATF_TC_BODY(msgsnd_count, tc)
+{
+        struct msg msg = { MSG_MTYPE_1, { 'a', 'b', 'c' } };
+        struct msqid_ds ds;
+        size_t i = 0;
+        int id, rv;
+
+        id = msgget(MSG_KEY, IPC_CREAT | 0600);
+        ATF_REQUIRE(id != -1);
+
+        for (;;) {
+
+                errno = 0;
+                rv = msgsnd(id, &msg, sizeof(struct msg), IPC_NOWAIT);
+
+                if (rv == 0) {
+                        i++;
+                        continue;
+                }
+
+                if (rv == -1 && errno == EAGAIN)
+                        break;
+
+                atf_tc_fail("failed to enqueue a message");
+        }
+
+        (void)memset(&ds, 0, sizeof(struct msqid_ds));
+        (void)msgctl(id, IPC_STAT, &ds);
+
+        if (ds.msg_qnum != i)
+                atf_tc_fail("incorrect message count");
+
+        ATF_REQUIRE(msgctl(id, IPC_RMID, 0) == 0);
+}
+
+ATF_TC_CLEANUP(msgsnd_count, tc)
+{
+        clean();
+}
+
+ATF_TC_WITH_CLEANUP(msgsnd_err);
+ATF_TC_HEAD(msgsnd_err, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test errors from msgsnd(2)");
+}
+
+ATF_TC_BODY(msgsnd_err, tc)
+{
+        struct msg msg = { MSG_MTYPE_1, { 'a', 'b', 'c' } };
+        int id;
+
+        id = msgget(MSG_KEY, IPC_CREAT | 0600);
+        ATF_REQUIRE(id != -1);
+
+        errno = 0;
+
+        ATF_REQUIRE_ERRNO(EFAULT, msgsnd(id, (void *)-1,
+                sizeof(struct msg), IPC_NOWAIT) == -1);
+
+        errno = 0;
+
+        ATF_REQUIRE_ERRNO(EINVAL, msgsnd(-1, &msg,
+                sizeof(struct msg), IPC_NOWAIT) == -1);
+
+        errno = 0;
+
+        ATF_REQUIRE_ERRNO(EINVAL, msgsnd(-1, &msg,
+                SSIZE_MAX, IPC_NOWAIT) == -1);
+
+        errno = 0;
+        msg.mtype = 0;
+
+        ATF_REQUIRE_ERRNO(EINVAL, msgsnd(id, &msg,
+                sizeof(struct msg), IPC_NOWAIT) == -1);
+
+        ATF_REQUIRE(msgctl(id, IPC_RMID, 0) == 0);
+}
+
+ATF_TC_CLEANUP(msgsnd_err, tc)
+{
+        clean();
+}
+
+ATF_TC_WITH_CLEANUP(msgsnd_nonblock);
+ATF_TC_HEAD(msgsnd_nonblock, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test msgsnd(2) with IPC_NOWAIT");
+        atf_tc_set_md_var(tc, "timeout", "10");
+}
+
+ATF_TC_BODY(msgsnd_nonblock, tc)
+{
+        struct msg msg = { MSG_MTYPE_1, { 'a', 'b', 'c' } };
+        int id, rv, sta;
+        pid_t pid;
+
+        id = msgget(MSG_KEY, IPC_CREAT | 0600);
+        ATF_REQUIRE(id != -1);
+
+        pid = fork();
+        ATF_REQUIRE(pid >= 0);
+
+        if (pid == 0) {
+
+                for (;;) {
+
+                        errno = 0;
+                        rv = msgsnd(id, &msg, sizeof(struct msg), IPC_NOWAIT);
+
+                        if (rv == -1 && errno == EAGAIN)
+                                _exit(EXIT_SUCCESS);
+                }
+        }
+
+        (void)sleep(2);
+        (void)kill(pid, SIGKILL);
+        (void)wait(&sta);
+
+        if (WIFEXITED(sta) == 0 || WIFSIGNALED(sta) != 0)
+                atf_tc_fail("msgsnd(2) blocked with IPC_NOWAIT");
+
+        ATF_REQUIRE(msgctl(id, IPC_RMID, 0) == 0);
+}
+
+ATF_TC_CLEANUP(msgsnd_nonblock, tc)
+{
+        clean();
+}
+
+ATF_TC_WITH_CLEANUP(msgsnd_perm);
+ATF_TC_HEAD(msgsnd_perm, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test permissions with msgsnd(2)");
+        atf_tc_set_md_var(tc, "require.user", "root");
+}
+
+ATF_TC_BODY(msgsnd_perm, tc)
+{
+        struct msg msg = { MSG_MTYPE_1, { 'a', 'b', 'c' } };
+        struct passwd *pw;
+        int id, sta;
+        pid_t pid;
+        uid_t uid;
+
+        pw = getpwnam("nobody");
+        id = msgget(MSG_KEY, IPC_CREAT | 0600);
+
+        ATF_REQUIRE(id != -1);
+        ATF_REQUIRE(pw != NULL);
+
+        uid = pw->pw_uid;
+        ATF_REQUIRE(uid != 0);
+
+        pid = fork();
+        ATF_REQUIRE(pid >= 0);
+
+        if (pid == 0) {
+
+                /*
+                 * Try to enqueue a message to the queue
+                 * created by root as RW for owner only.
+                 */
+                if (setuid(uid) != 0)
+                        _exit(EX_OSERR);
+
+                id = msgget(MSG_KEY, 0);
+
+                if (id == -1)
+                        _exit(EX_OSERR);
+
+                errno = 0;
+
+                if (msgsnd(id, &msg, sizeof(struct msg), IPC_NOWAIT) == 0)
+                        _exit(EXIT_FAILURE);
+
+                if (errno != EACCES)
+                        _exit(EXIT_FAILURE);
+
+                _exit(EXIT_SUCCESS);
+        }
+
+        (void)wait(&sta);
+
+        if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS) {
+
+                if (errno == EX_OSERR)
+                        atf_tc_fail("system call failed");
+
+                atf_tc_fail("UID %u enqueued message to root's queue", uid);
+        }
+
+        ATF_REQUIRE(msgctl(id, IPC_RMID, 0) == 0);
+}
+
+ATF_TC_CLEANUP(msgsnd_perm, tc)
+{
+        clean();
+}
+
+static volatile int sig_caught;
+
+static void
+sigsys_handler(int signum)
+{
+
+        sig_caught = signum;
+}
+
+static int
+no_kernel_sysvmsg(void)
+{
+        int id;
+        void (*osig)(int);
+
+        sig_caught = 0;
+        osig = signal(SIGSYS, sigsys_handler);
+        id = msgget(MSG_KEY, IPC_CREAT | 0600);
+        if (sig_caught || id == -1)
+                return 1;
+
+        (void)msgctl(id, IPC_RMID, 0);
+        (void)signal(SIGSYS, osig);
+
+        return 0;
+}
+
+ATF_TC(msgsnd_query);
+ATF_TC_HEAD(msgsnd_query, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Skip msgsnd_* tests - no SYSVMSG");
+}
+ATF_TC_BODY(msgsnd_query, tc)
+{
+        atf_tc_skip("No SYSVMSG in kernel");
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+        if (no_kernel_sysvmsg()) {
+                ATF_TP_ADD_TC(tp, msgsnd_query);
+        } else {
+                ATF_TP_ADD_TC(tp, msgsnd_block);
+                ATF_TP_ADD_TC(tp, msgsnd_count);
+                ATF_TP_ADD_TC(tp, msgsnd_err);
+                ATF_TP_ADD_TC(tp, msgsnd_nonblock);
+                ATF_TP_ADD_TC(tp, msgsnd_perm);
+        }
+
+        return atf_no_error();
+}