/*
* Check decoding of mq_open, mq_timedsend, mq_notify, mq_timedreceive and
* mq_unlink syscalls.
*
* Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
* All rights reserved.
*
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 "tests.h"
#include <asm/unistd.h>
#if defined __NR_mq_open && __NR_mq_timedsend && __NR_mq_timedreceive && \
__NR_mq_notify && __NR_mq_unlink
# include <assert.h>
# include <errno.h>
# include <fcntl.h>
# include <inttypes.h>
# include <signal.h>
# include <stdbool.h>
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
# include <time.h>
# include <unistd.h>
# include "sigevent.h"
# ifndef MQ_NAME
# define MQ_NAME "mq_sendrecv.sample"
# endif
# ifndef DUMPIO_READ
# define DUMPIO_READ 0
# endif
# ifndef DUMPIO_WRITE
# define DUMPIO_WRITE 0
# endif
enum {
NUM_ATTRS = 8,
MSG_CUT = 8,
MSG_MAX_UNCUT = 32,
MSG_SIZE = 64,
MSG_START = 0x80,
};
static void
printstr(unsigned char start, unsigned int count)
{
unsigned int i;
printf("\"");
for (i = 0; i < count; i++) {
printf("\\%hho", (unsigned char) (start + i));
}
printf("\"");
}
#if DUMPIO_READ || DUMPIO_WRITE
static void
dumpstr(unsigned char start, unsigned int count)
{
unsigned int i;
unsigned int j;
for (i = 0; i < count; i++) {
if (i < count) {
if (!(i % 16))
printf(" | %05x ", i);
if (!(i % 8))
printf(" ");
printf("%02hhx ", (unsigned char) (start + i));
}
if ((i % 16 == 15) || (i == (count - 1))) {
if (i % 16 != 15)
printf("%*s", 3 * (15 - i % 16) +
((i + 8) % 16) / 8, " ");
printf(" ");
for (j = 0; j <= (i % 16); j++)
printf(".");
for (j = i % 16; j < 15; j++)
printf(" ");
printf(" |\n");
}
}
}
#endif /* DUMPIO_READ || DUMPIO_WRITE */
static void
cleanup(void)
{
long rc;
rc = syscall(__NR_mq_unlink, MQ_NAME);
printf("mq_unlink(\"" MQ_NAME "\") = %s\n", sprintrc(rc));
puts("+++ exited with 0 +++");
}
static void
do_send(int fd, char *msg, unsigned int msg_size, struct timespec *tmout,
bool cropped)
{
long rc;
long saved_errno;
do {
rc = syscall(__NR_mq_timedsend, fd, msg, msg_size, 42,
tmout);
saved_errno = errno;
printf("mq_timedsend(%d, ", fd);
printstr(MSG_START, msg_size > MSG_MAX_UNCUT ? MSG_MAX_UNCUT :
msg_size);
if (cropped)
printf("...");
errno = saved_errno;
printf(", %u, 42, {tv_sec=%jd, tv_nsec=%jd}) = %s\n", msg_size,
(intmax_t) tmout->tv_sec, (intmax_t) tmout->tv_nsec,
sprintrc(rc));
errno = saved_errno;
if (rc == -1) {
if (errno == EINTR)
continue;
perror_msg_and_skip("mq_timedsend");
}
# if DUMPIO_WRITE
dumpstr(MSG_START, msg_size);
# endif
} while (rc);
}
static void
do_recv(int fd, char *msg, unsigned int msg_size, struct timespec *tmout,
bool cropped)
{
long rc;
long saved_errno;
unsigned prio;
do {
rc = syscall(__NR_mq_timedreceive, fd, msg, MSG_SIZE, &prio,
tmout);
saved_errno = errno;
printf("mq_timedreceive(%d, ", fd);
if (rc >= 0) {
printstr(MSG_START, rc > MSG_MAX_UNCUT ? MSG_MAX_UNCUT :
rc);
if (cropped)
printf("...");
} else {
printf("%p", msg);
}
errno = saved_errno;
printf(", %u, [42], {tv_sec=%jd, tv_nsec=%jd}) = %s\n", MSG_SIZE,
(intmax_t) tmout->tv_sec,
(intmax_t) tmout->tv_nsec, sprintrc(rc));
errno = saved_errno;
if (rc == -1) {
if (errno == EINTR)
continue;
perror_msg_and_skip("mq_timedreceive");
}
if ((rc >= 0) && ((unsigned long) rc != msg_size))
error_msg_and_skip("mq_timedreceive size mismatch"
": expected %u, got %ld",
msg_size, rc);
# if DUMPIO_READ
dumpstr(MSG_START, rc);
# endif
} while (rc < 0);
}
int
main(void)
{
static const kernel_ulong_t bogus_zero =
(kernel_ulong_t) 0x8765432100000000ULL;
static const kernel_ulong_t bogus_oflags =
(kernel_ulong_t) 0xdefaced100000003ULL;
static const kernel_ulong_t bogus_mode =
(kernel_ulong_t) 0xdec0deadfacefeedULL;
static const kernel_ulong_t bogus_fd =
(kernel_ulong_t) 0xfeedfacedeadba5eULL;
static const kernel_ulong_t bogus_zero_size =
(sizeof(kernel_ulong_t) > sizeof(int)) ? (kernel_ulong_t) 0 :
(kernel_ulong_t) 0xface1e5500000000ULL;
static const kernel_ulong_t bogus_size =
(kernel_ulong_t) 0xbadc0dedda7a1057ULL;
static const kernel_ulong_t bogus_prio =
(kernel_ulong_t) 0xdec0ded1defaced3ULL;
static const struct timespec bogus_tmout_data = {
.tv_sec = (time_t) 0xdeadfacebeeff00dLL,
.tv_nsec = (long) 0xfacefee1deadfeedLL,
};
static const struct timespec future_tmout_data = {
.tv_sec = (time_t) 0x7ea1fade7e57faceLL,
.tv_nsec = 999999999,
};;
struct_sigevent bogus_sev_data = {
.sigev_notify = 0xdefaced,
.sigev_signo = 0xfacefeed,
.sigev_value.sival_ptr = (unsigned long) 0xdeadbeefbadc0dedULL
};
const char *errstr;
long rc;
kernel_long_t *bogus_attrs = tail_alloc(sizeof(*bogus_attrs) *
NUM_ATTRS);
char *msg = tail_alloc(MSG_SIZE);
unsigned *bogus_prio_ptr = tail_alloc(sizeof(*bogus_prio_ptr));
struct timespec *bogus_tmout = tail_memdup(&bogus_tmout_data,
sizeof(*bogus_tmout));
struct timespec *future_tmout = tail_memdup(&future_tmout_data,
sizeof(*future_tmout));
struct_sigevent *bogus_sev = tail_memdup(&bogus_sev_data,
sizeof(*bogus_sev));
int fd = -1;
fill_memory_ex(msg, MSG_SIZE, MSG_START, MSG_SIZE);
fill_memory_ex(bogus_attrs, sizeof(*bogus_attrs) * NUM_ATTRS,
0xbb, 0x70);
/* mq_open */
/* Zero values, non-O_CREAT mode */
rc = syscall(__NR_mq_open, NULL, bogus_zero, bogus_mode, NULL);
printf("mq_open(NULL, O_RDONLY) = %s\n", sprintrc(rc));
/* O_CREAT parsing, other flags, bogs values */
rc = syscall(__NR_mq_open, msg, O_CREAT | bogus_oflags, bogus_mode,
NULL);
printf("mq_open(%p, O_ACCMODE|O_CREAT, %#o, NULL) = %s\n",
msg, (unsigned short) bogus_mode, sprintrc(rc));
/* Partially invalid attributes structure */
rc = syscall(__NR_mq_open, msg, O_CREAT | bogus_oflags, bogus_mode,
bogus_attrs + 1);
printf("mq_open(%p, O_ACCMODE|O_CREAT, %#o, %p) = %s\n",
msg, (unsigned short) bogus_mode, bogus_attrs + 1, sprintrc(rc));
/* Valid attributes structure */
rc = syscall(__NR_mq_open, msg, O_CREAT | bogus_oflags, bogus_mode,
bogus_attrs);
printf("mq_open(%p, O_ACCMODE|O_CREAT, %#o, {mq_flags=%#llx, "
"mq_maxmsg=%lld, mq_msgsize=%lld, mq_curmsgs=%lld}) = %s\n",
msg, (unsigned short) bogus_mode,
(unsigned long long) (kernel_ulong_t) bogus_attrs[0],
(long long) bogus_attrs[1],
(long long) bogus_attrs[2],
(long long) bogus_attrs[3], sprintrc(rc));
/* mq_timedsend */
/* Zero values*/
rc = syscall(__NR_mq_timedsend, bogus_zero, NULL, bogus_zero_size,
bogus_zero, NULL);
printf("mq_timedsend(0, NULL, 0, 0, NULL) = %s\n", sprintrc(rc));
/* Invalid pointers */
rc = syscall(__NR_mq_timedsend, bogus_fd, msg + MSG_SIZE, bogus_size,
bogus_prio, bogus_tmout + 1);
printf("mq_timedsend(%d, %p, %llu, %u, %p) = %s\n",
(int) bogus_fd, msg + MSG_SIZE, (unsigned long long) bogus_size,
(unsigned) bogus_prio, bogus_tmout + 1, sprintrc(rc));
/* Partially invalid message (memory only partially available) */
rc = syscall(__NR_mq_timedsend, bogus_fd, msg + MSG_SIZE - MSG_CUT,
MSG_SIZE, bogus_prio, bogus_tmout);
printf("mq_timedsend(%d, %p, %llu, %u, {tv_sec=%jd, tv_nsec=%jd}) = "
"%s\n",
(int) bogus_fd, msg + MSG_SIZE - MSG_CUT,
(unsigned long long) MSG_SIZE, (unsigned) bogus_prio,
(intmax_t) bogus_tmout->tv_sec, (intmax_t) bogus_tmout->tv_nsec,
sprintrc(rc));
/* Fully valid message, uncut */
rc = syscall(__NR_mq_timedsend, bogus_fd, msg + MSG_SIZE - MSG_CUT,
MSG_CUT, bogus_prio, bogus_tmout);
errstr = sprintrc(rc);
printf("mq_timedsend(%d, ", (int) bogus_fd);
printstr(MSG_START + MSG_SIZE - MSG_CUT, MSG_CUT);
printf(", %llu, %u, {tv_sec=%jd, tv_nsec=%jd}) = %s\n",
(unsigned long long) MSG_CUT, (unsigned) bogus_prio,
(intmax_t) bogus_tmout->tv_sec, (intmax_t) bogus_tmout->tv_nsec,
errstr);
/* Partially invalid message, cut at maxstrlen */
rc = syscall(__NR_mq_timedsend, bogus_fd, msg + MSG_CUT, MSG_SIZE,
bogus_prio, bogus_tmout);
errstr = sprintrc(rc);
printf("mq_timedsend(%d, ", (int) bogus_fd);
printstr(MSG_START + MSG_CUT, MSG_MAX_UNCUT);
printf("..., %llu, %u, {tv_sec=%jd, tv_nsec=%jd}) = %s\n",
(unsigned long long) MSG_SIZE, (unsigned) bogus_prio,
(intmax_t) bogus_tmout->tv_sec, (intmax_t) bogus_tmout->tv_nsec,
errstr);
/* mq_timedreceive */
/* Zero values */
rc = syscall(__NR_mq_timedreceive, bogus_zero, NULL, bogus_zero_size,
NULL, NULL);
printf("mq_timedreceive(0, NULL, 0, NULL, NULL) = %s\n", sprintrc(rc));
/* Invalid addresses */
rc = syscall(__NR_mq_timedreceive, bogus_fd, msg + MSG_SIZE, bogus_size,
bogus_prio_ptr + 1, bogus_tmout + 1);
printf("mq_timedreceive(%d, %p, %llu, %p, %p) = %s\n",
(int) bogus_fd, msg + MSG_SIZE, (unsigned long long) bogus_size,
bogus_prio_ptr + 1, bogus_tmout + 1, sprintrc(rc));
/* Invalid fd, valid msg pointer */
rc = syscall(__NR_mq_timedreceive, bogus_fd, msg, bogus_size,
bogus_prio_ptr, bogus_tmout);
printf("mq_timedreceive(%d, %p, %llu, %p, {tv_sec=%jd, tv_nsec=%jd}) = "
"%s\n",
(int) bogus_fd, msg, (unsigned long long) bogus_size,
bogus_prio_ptr, (intmax_t) bogus_tmout->tv_sec,
(intmax_t) bogus_tmout->tv_nsec, sprintrc(rc));
/* mq_notify */
/* Zero values */
rc = syscall(__NR_mq_notify, bogus_zero, NULL);
printf("mq_notify(0, NULL) = %s\n", sprintrc(rc));
/* Invalid pointer */
rc = syscall(__NR_mq_notify, bogus_fd, bogus_sev + 1);
printf("mq_notify(%d, %p) = %s\n",
(int) bogus_fd, bogus_sev + 1, sprintrc(rc));
/* Invalid SIGEV_* */
rc = syscall(__NR_mq_notify, bogus_fd, bogus_sev);
printf("mq_notify(%d, {sigev_value={sival_int=%d, sival_ptr=%#lx}"
", sigev_signo=%u, sigev_notify=%#x /* SIGEV_??? */}) = %s\n",
(int) bogus_fd, bogus_sev->sigev_value.sival_int,
bogus_sev->sigev_value.sival_ptr,
bogus_sev->sigev_signo, bogus_sev->sigev_notify,
sprintrc(rc));
/* SIGEV_NONE */
bogus_sev->sigev_notify = SIGEV_NONE;
rc = syscall(__NR_mq_notify, bogus_fd, bogus_sev);
printf("mq_notify(%d, {sigev_value={sival_int=%d, sival_ptr=%#lx}, "
"sigev_signo=%u, sigev_notify=SIGEV_NONE}) = %s\n",
(int) bogus_fd, bogus_sev->sigev_value.sival_int,
bogus_sev->sigev_value.sival_ptr,
bogus_sev->sigev_signo, sprintrc(rc));
/* SIGEV_SIGNAL */
bogus_sev->sigev_notify = SIGEV_SIGNAL;
bogus_sev->sigev_signo = SIGALRM;
rc = syscall(__NR_mq_notify, bogus_fd, bogus_sev);
printf("mq_notify(%d, {sigev_value={sival_int=%d, sival_ptr=%#lx}, "
"sigev_signo=SIGALRM, sigev_notify=SIGEV_SIGNAL}) = %s\n",
(int) bogus_fd, bogus_sev->sigev_value.sival_int,
bogus_sev->sigev_value.sival_ptr, sprintrc(rc));
/* SIGEV_THREAD */
bogus_sev->sigev_notify = SIGEV_THREAD;
bogus_sev->sigev_un.sigev_thread.function =
(unsigned long) 0xdeadbeefbadc0dedULL;
bogus_sev->sigev_un.sigev_thread.attribute =
(unsigned long) 0xcafef00dfacefeedULL;
rc = syscall(__NR_mq_notify, bogus_fd, bogus_sev);
printf("mq_notify(%d, {sigev_value={sival_int=%d, sival_ptr=%#lx}, "
"sigev_signo=SIGALRM, sigev_notify=SIGEV_THREAD, "
"sigev_notify_function=%#lx, sigev_notify_attributes=%#lx}) = "
"%s\n",
(int) bogus_fd, bogus_sev->sigev_value.sival_int,
bogus_sev->sigev_value.sival_ptr,
bogus_sev->sigev_un.sigev_thread.function,
bogus_sev->sigev_un.sigev_thread.attribute, sprintrc(rc));
/* mq_unlink */
/* Zero values */
rc = syscall(__NR_mq_unlink, NULL);
printf("mq_unlink(NULL) = %s\n", sprintrc(rc));
/* Invalid ptr */
rc = syscall(__NR_mq_unlink, msg + MSG_SIZE);
printf("mq_unlink(%p) = %s\n", msg + MSG_SIZE, sprintrc(rc));
/* Long unterminated string */
rc = syscall(__NR_mq_unlink, msg);
errstr = sprintrc(rc);
printf("mq_unlink(%p) = %s\n", msg, errstr);
/* Sending and receiving test */
# if DUMPIO_READ || DUMPIO_WRITE
close(0);
# endif
bogus_attrs[1] = 2;
bogus_attrs[2] = MSG_SIZE;
fd = rc = syscall(__NR_mq_open, MQ_NAME,
O_CREAT|O_RDWR|O_NONBLOCK, S_IRWXU, bogus_attrs);
errstr = sprintrc(rc);
if (rc < 0)
perror_msg_and_skip("mq_open");
else
atexit(cleanup);
# if DUMPIO_READ || DUMPIO_WRITE
if (fd != 0)
error_msg_and_skip("mq_open returned fd other than 0");
# endif
fill_memory_ex(bogus_attrs, sizeof(*bogus_attrs) * NUM_ATTRS,
0xbb, 0x70);
printf("mq_open(\"" MQ_NAME "\", O_RDWR|O_CREAT|O_NONBLOCK, "
"0700, {mq_flags=%#llx, mq_maxmsg=2, mq_msgsize=%u, "
"mq_curmsgs=%lld}) = %s\n",
(unsigned long long) (kernel_ulong_t) bogus_attrs[0], MSG_SIZE,
(long long) bogus_attrs[3], errstr);
rc = syscall(__NR_mq_getsetattr, fd, NULL, bogus_attrs);
if (rc < 0)
perror_msg_and_skip("mq_getsetattr");
if ((bogus_attrs[1] < 2) || (bogus_attrs[2] < MSG_SIZE))
error_msg_and_skip("mq too small");
do_send(fd, msg, MSG_CUT, future_tmout, false);
do_send(fd, msg, MSG_SIZE, future_tmout, true);
memset(msg, '\0', MSG_SIZE);
do_recv(fd, msg, MSG_CUT, future_tmout, false);
memset(msg, '\0', MSG_SIZE);
do_recv(fd, msg, MSG_SIZE, future_tmout, true);
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_mq_open && __NR_mq_timedsend && "
"__NR_mq_timedreceive && __NR_mq_notify && __NR_mq_unlink");
#endif