diff options
Diffstat (limited to 'regress/lib/libc/sys/t_msgsnd.c')
| -rw-r--r-- | regress/lib/libc/sys/t_msgsnd.c | 384 |
1 files changed, 384 insertions, 0 deletions
diff --git a/regress/lib/libc/sys/t_msgsnd.c b/regress/lib/libc/sys/t_msgsnd.c new file mode 100644 index 00000000000..ab0cc87e6f8 --- /dev/null +++ b/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(); +} |