1 files changed, 405 insertions, 0 deletions

diff --git a/src/regress/lib/libc/sys/t_msgctl.c b/src/regress/lib/libc/sys/t_msgctl.c
new file mode 100644
index 0000000000..980f11ee0b
--- /dev/null
+++ b/src/regress/lib/libc/sys/t_msgctl.c
@@ -0,0 +1,405 @@
+/*      $OpenBSD: t_msgctl.c,v 1.1.1.1 2019/11/19 19:57:04 bluhm Exp $  */
+/* $NetBSD: t_msgctl.c,v 1.7 2017/10/07 17:15:44 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_msgctl.c,v 1.7 2017/10/07 17:15:44 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         12345689
+#define MSG_MTYPE_1     0x41
+
+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(msgctl_err);
+ATF_TC_HEAD(msgctl_err, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test errors from msgctl(2)");
+}
+
+ATF_TC_BODY(msgctl_err, tc)
+{
+        const int cmd[] = { IPC_STAT, IPC_SET, IPC_RMID };
+        struct msqid_ds msgds;
+        size_t i;
+        int id;
+
+        (void)memset(&msgds, 0, sizeof(struct msqid_ds));
+
+        id = msgget(MSG_KEY, IPC_CREAT | 0600);
+        ATF_REQUIRE(id != -1);
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(EINVAL, msgctl(id, INT_MAX, &msgds) == -1);
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(EFAULT, msgctl(id, IPC_STAT, (void *)-1) == -1);
+
+        for (i = 0; i < __arraycount(cmd); i++) {
+                errno = 0;
+                ATF_REQUIRE_ERRNO(EINVAL, msgctl(-1, cmd[i], &msgds) == -1);
+        }
+
+        ATF_REQUIRE(msgctl(id, IPC_RMID, 0) == 0);
+}
+
+ATF_TC_CLEANUP(msgctl_err, tc)
+{
+        clean();
+}
+
+ATF_TC_WITH_CLEANUP(msgctl_perm);
+ATF_TC_HEAD(msgctl_perm, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test permissions with msgctl(2)");
+        atf_tc_set_md_var(tc, "require.user", "root");
+}
+
+ATF_TC_BODY(msgctl_perm, tc)
+{
+        struct msqid_ds msgds;
+        struct passwd *pw;
+        pid_t pid;
+        int sta;
+        int id;
+
+        (void)memset(&msgds, 0, sizeof(struct msqid_ds));
+
+        pw = getpwnam("nobody");
+        id = msgget(MSG_KEY, IPC_CREAT | 0600);
+
+        ATF_REQUIRE(id != -1);
+        ATF_REQUIRE(pw != NULL);
+        ATF_REQUIRE(msgctl(id, IPC_STAT, &msgds) == 0);
+
+        pid = fork();
+        ATF_REQUIRE(pid >= 0);
+
+        if (pid == 0) {
+
+                if (setuid(pw->pw_uid) != 0)
+                        _exit(EX_OSERR);
+
+                msgds.msg_perm.uid = getuid();
+                msgds.msg_perm.gid = getgid();
+
+                errno = 0;
+
+                if (msgctl(id, IPC_SET, &msgds) == 0)
+                        _exit(EXIT_FAILURE);
+
+                if (errno != EPERM)
+                        _exit(EXIT_FAILURE);
+
+                (void)memset(&msgds, 0, sizeof(struct msqid_ds));
+
+                if (msgctl(id, IPC_STAT, &msgds) != 0)
+                        _exit(EX_OSERR);
+
+                msgds.msg_qbytes = 1;
+
+                if (msgctl(id, IPC_SET, &msgds) == 0)
+                        _exit(EXIT_FAILURE);
+
+                if (errno != EPERM)
+                        _exit(EXIT_FAILURE);
+
+                _exit(EXIT_SUCCESS);
+        }
+
+        (void)wait(&sta);
+
+        if (WIFEXITED(sta) == 0) {
+
+                if (WEXITSTATUS(sta) == EX_OSERR)
+                        atf_tc_fail("system call failed");
+
+                if (WEXITSTATUS(sta) == EXIT_FAILURE)
+                        atf_tc_fail("UID %u manipulated root's "
+                            "message queue", pw->pw_uid);
+        }
+
+        ATF_REQUIRE(msgctl(id, IPC_RMID, 0) == 0);
+}
+
+ATF_TC_CLEANUP(msgctl_perm, tc)
+{
+        clean();
+}
+
+ATF_TC_WITH_CLEANUP(msgctl_pid);
+ATF_TC_HEAD(msgctl_pid, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test that PIDs are updated");
+}
+
+ATF_TC_BODY(msgctl_pid, tc)
+{
+        struct msg msg = { MSG_MTYPE_1, { 'a', 'b', 'c' } };
+        struct msqid_ds msgds;
+        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) {
+
+                (void)msgsnd(id, &msg, sizeof(struct msg), IPC_NOWAIT);
+
+                _exit(EXIT_SUCCESS);
+        }
+
+        (void)sleep(1);
+        (void)wait(&sta);
+        (void)memset(&msgds, 0, sizeof(struct msqid_ds));
+
+        ATF_REQUIRE(msgctl(id, IPC_STAT, &msgds) == 0);
+
+        if (pid != msgds.msg_lspid)
+                atf_tc_fail("the PID of last msgsnd(2) was not updated");
+
+        pid = fork();
+        ATF_REQUIRE(pid >= 0);
+
+        if (pid == 0) {
+
+                (void)msgrcv(id, &msg,
+                    sizeof(struct msg), MSG_MTYPE_1, IPC_NOWAIT);
+
+                _exit(EXIT_SUCCESS);
+        }
+
+        (void)sleep(1);
+        (void)wait(&sta);
+        (void)memset(&msgds, 0, sizeof(struct msqid_ds));
+
+        ATF_REQUIRE(msgctl(id, IPC_STAT, &msgds) == 0);
+
+        if (pid != msgds.msg_lrpid)
+                atf_tc_fail("the PID of last msgrcv(2) was not updated");
+
+        ATF_REQUIRE(msgctl(id, IPC_RMID, 0) == 0);
+}
+
+ATF_TC_CLEANUP(msgctl_pid, tc)
+{
+        clean();
+}
+
+ATF_TC_WITH_CLEANUP(msgctl_set);
+ATF_TC_HEAD(msgctl_set, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test msgctl(2) with IPC_SET");
+        atf_tc_set_md_var(tc, "require.user", "root");
+}
+
+ATF_TC_BODY(msgctl_set, tc)
+{
+        struct msqid_ds msgds;
+        struct passwd *pw;
+        int id;
+
+        (void)memset(&msgds, 0, sizeof(struct msqid_ds));
+
+        pw = getpwnam("nobody");
+        id = msgget(MSG_KEY, IPC_CREAT | 0600);
+
+        ATF_REQUIRE(id != -1);
+        ATF_REQUIRE(pw != NULL);
+        ATF_REQUIRE(msgctl(id, IPC_STAT, &msgds) == 0);
+
+        msgds.msg_perm.uid = pw->pw_uid;
+
+        if (msgctl(id, IPC_SET, &msgds) != 0)
+                atf_tc_fail("root failed to change the UID of message queue");
+
+        msgds.msg_perm.uid = getuid();
+        msgds.msg_perm.gid = pw->pw_gid;
+
+        if (msgctl(id, IPC_SET, &msgds) != 0)
+                atf_tc_fail("root failed to change the GID of message queue");
+
+        /*
+         * Note: setting the qbytes to zero fails even as root.
+         */
+        msgds.msg_qbytes = 1;
+        msgds.msg_perm.gid = getgid();
+
+        if (msgctl(id, IPC_SET, &msgds) != 0)
+                atf_tc_fail("root failed to change qbytes of message queue");
+
+        ATF_REQUIRE(msgctl(id, IPC_RMID, 0) == 0);
+}
+
+ATF_TC_CLEANUP(msgctl_set, tc)
+{
+        clean();
+}
+
+ATF_TC_WITH_CLEANUP(msgctl_time);
+ATF_TC_HEAD(msgctl_time, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test that access times are updated");
+}
+
+ATF_TC_BODY(msgctl_time, tc)
+{
+        struct msg msg = { MSG_MTYPE_1, { 'a', 'b', 'c' } };
+        struct msqid_ds msgds;
+        time_t t;
+        int id;
+
+        id = msgget(MSG_KEY, IPC_CREAT | 0600);
+        ATF_REQUIRE(id != -1);
+
+        t = time(NULL);
+
+        (void)memset(&msgds, 0, sizeof(struct msqid_ds));
+        (void)msgsnd(id, &msg, sizeof(struct msg), IPC_NOWAIT);
+        (void)msgctl(id, IPC_STAT, &msgds);
+
+        if (llabs(t - msgds.msg_stime) > 1)
+                atf_tc_fail("time of last msgsnd(2) was not updated");
+
+        if (msgds.msg_rtime != 0)
+                atf_tc_fail("time of last msgrcv(2) was updated incorrectly");
+
+        t = time(NULL);
+
+        (void)memset(&msgds, 0, sizeof(struct msqid_ds));
+        (void)msgrcv(id, &msg, sizeof(struct msg), MSG_MTYPE_1, IPC_NOWAIT);
+        (void)msgctl(id, IPC_STAT, &msgds);
+
+        if (llabs(t - msgds.msg_rtime) > 1)
+                atf_tc_fail("time of last msgrcv(2) was not updated");
+
+        /*
+         * Note: this is non-zero even after the memset(3).
+         */
+        if (msgds.msg_stime == 0)
+                atf_tc_fail("time of last msgsnd(2) was updated incorrectly");
+
+        ATF_REQUIRE(msgctl(id, IPC_RMID, 0) == 0);
+}
+
+ATF_TC_CLEANUP(msgctl_time, 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(msgctl_query);
+ATF_TC_HEAD(msgctl_query, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Skip msgctl_* tests - no SYSVMSG");
+}
+ATF_TC_BODY(msgctl_query, tc)
+{
+        atf_tc_skip("No SYSVMSG in kernel");
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+        if (no_kernel_sysvmsg()) {
+                ATF_TP_ADD_TC(tp, msgctl_query);
+        } else {
+                ATF_TP_ADD_TC(tp, msgctl_err);
+                ATF_TP_ADD_TC(tp, msgctl_perm);
+                ATF_TP_ADD_TC(tp, msgctl_pid);
+                ATF_TP_ADD_TC(tp, msgctl_set);
+                ATF_TP_ADD_TC(tp, msgctl_time);
+        }
+
+        return atf_no_error();
+}