Dmitry V. Levin
d44707d889
* net.c (dumpiov_in_mmsghdr): Call dumpiov_upto instead of dumpiov, pass data size limit to dumpiov_upto. * NEWS: Mention this fix. * tests/mmsg.c (main): Update.
244 lines
7.0 KiB
C
244 lines
7.0 KiB
C
/*
|
|
* Copyright (c) 2014 Masatake YAMATO <yamato@redhat.com>
|
|
* Copyright (c) 2014-2016 Dmitry V. Levin <ldv@altlinux.org>
|
|
* 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 <sys/syscall.h>
|
|
|
|
#if (defined __NR_sendmmsg || defined HAVE_SENDMMSG) \
|
|
&& (defined __NR_recvmmsg || defined HAVE_RECVMMSG)
|
|
|
|
# include <assert.h>
|
|
# include <errno.h>
|
|
# include <stdio.h>
|
|
# include <unistd.h>
|
|
# include <sys/socket.h>
|
|
|
|
# ifndef HAVE_STRUCT_MMSGHDR
|
|
struct mmsghdr {
|
|
struct msghdr msg_hdr;
|
|
unsigned msg_len;
|
|
};
|
|
# endif
|
|
|
|
static int
|
|
send_mmsg(int fd, struct mmsghdr *vec, unsigned int vlen, unsigned int flags)
|
|
{
|
|
int rc;
|
|
#ifdef __NR_sendmmsg
|
|
rc = syscall(__NR_sendmmsg, (long) fd, vec, (unsigned long) vlen,
|
|
(unsigned long) flags);
|
|
if (rc >= 0 || ENOSYS != errno)
|
|
return rc;
|
|
tprintf("sendmmsg(%d, %p, %u, MSG_DONTROUTE|MSG_NOSIGNAL)"
|
|
" = -1 ENOSYS (%m)\n", fd, vec, vlen);
|
|
#endif
|
|
#ifdef HAVE_SENDMMSG
|
|
rc = sendmmsg(fd, vec, vlen, flags);
|
|
#endif
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
recv_mmsg(int fd, struct mmsghdr *vec, unsigned int vlen, unsigned int flags,
|
|
struct timespec *timeout)
|
|
{
|
|
int rc;
|
|
#ifdef __NR_recvmmsg
|
|
rc = syscall(__NR_recvmmsg, (long) fd, vec, (unsigned long) vlen,
|
|
(unsigned long) flags, timeout);
|
|
if (rc >= 0 || ENOSYS != errno)
|
|
return rc;
|
|
tprintf("recvmmsg(%d, %p, %u, MSG_DONTWAIT, NULL)"
|
|
" = -1 ENOSYS (%m)\n", fd, vec, vlen);
|
|
#endif
|
|
#ifdef HAVE_RECVMMSG
|
|
rc = recvmmsg(fd, vec, vlen, flags, timeout);
|
|
#endif
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
tprintf("%s", "");
|
|
|
|
int fds[2];
|
|
if (socketpair(AF_UNIX, SOCK_DGRAM, 0, fds))
|
|
perror_msg_and_skip("socketpair");
|
|
assert(0 == fds[0]);
|
|
assert(1 == fds[1]);
|
|
|
|
static const char w0_c[] = "012";
|
|
const char *w0_d = hexdump_strdup(w0_c);
|
|
void *w0 = tail_memdup(w0_c, LENGTH_OF(w0_c));
|
|
|
|
static const char w1_c[] = "34567";
|
|
const char *w1_d = hexdump_strdup(w1_c);
|
|
void *w1 = tail_memdup(w1_c, LENGTH_OF(w1_c));
|
|
|
|
static const char w2_c[] = "89abcde";
|
|
const char *w2_d = hexdump_strdup(w2_c);
|
|
void *w2 = tail_memdup(w2_c, LENGTH_OF(w2_c));
|
|
|
|
const struct iovec w0_iov_[] = {
|
|
{
|
|
.iov_base = w0,
|
|
.iov_len = LENGTH_OF(w0_c)
|
|
}, {
|
|
.iov_base = w1,
|
|
.iov_len = LENGTH_OF(w1_c)
|
|
}
|
|
};
|
|
struct iovec *w0_iov = tail_memdup(w0_iov_, sizeof(w0_iov_));
|
|
|
|
const struct iovec w1_iov_[] = {
|
|
{
|
|
.iov_base = w2,
|
|
.iov_len = LENGTH_OF(w2_c)
|
|
}
|
|
};
|
|
struct iovec *w1_iov = tail_memdup(w1_iov_, sizeof(w1_iov_));
|
|
|
|
const struct mmsghdr w_mmh_[] = {
|
|
{
|
|
.msg_hdr = {
|
|
.msg_iov = w0_iov,
|
|
.msg_iovlen = ARRAY_SIZE(w0_iov_),
|
|
}
|
|
}, {
|
|
.msg_hdr = {
|
|
.msg_iov = w1_iov,
|
|
.msg_iovlen = ARRAY_SIZE(w1_iov_),
|
|
}
|
|
}
|
|
};
|
|
void *w_mmh = tail_memdup(w_mmh_, sizeof(w_mmh_));
|
|
const unsigned int n_w_mmh = ARRAY_SIZE(w_mmh_);
|
|
|
|
int r = send_mmsg(1, w_mmh, n_w_mmh, MSG_DONTROUTE | MSG_NOSIGNAL);
|
|
if (r < 0 && errno == ENOSYS)
|
|
perror_msg_and_skip("sendmmsg");
|
|
assert(r == (int) n_w_mmh);
|
|
assert(close(1) == 0);
|
|
tprintf("sendmmsg(1, {{{msg_name(0)=NULL, msg_iov(%u)=[{\"%s\", %u}"
|
|
", {\"%s\", %u}], msg_controllen=0, msg_flags=0}, %u}"
|
|
", {{msg_name(0)=NULL, msg_iov(%u)=[{\"%s\", %u}]"
|
|
", msg_controllen=0, msg_flags=0}, %u}}, %u"
|
|
", MSG_DONTROUTE|MSG_NOSIGNAL) = %d\n"
|
|
" = %u buffers in vector 0\n"
|
|
" * %u bytes in buffer 0\n"
|
|
" | 00000 %-49s %-16s |\n"
|
|
" * %u bytes in buffer 1\n"
|
|
" | 00000 %-49s %-16s |\n"
|
|
" = %u buffers in vector 1\n"
|
|
" * %u bytes in buffer 0\n"
|
|
" | 00000 %-49s %-16s |\n",
|
|
ARRAY_SIZE(w0_iov_), w0_c, LENGTH_OF(w0_c),
|
|
w1_c, LENGTH_OF(w1_c),
|
|
LENGTH_OF(w0_c) + LENGTH_OF(w1_c),
|
|
ARRAY_SIZE(w1_iov_), w2_c, LENGTH_OF(w2_c), LENGTH_OF(w2_c),
|
|
n_w_mmh, r,
|
|
ARRAY_SIZE(w0_iov_), LENGTH_OF(w0_c), w0_d, w0_c,
|
|
LENGTH_OF(w1_c), w1_d, w1_c,
|
|
ARRAY_SIZE(w1_iov_), LENGTH_OF(w2_c), w2_d, w2_c);
|
|
|
|
const unsigned int w_len =
|
|
LENGTH_OF(w0_c) + LENGTH_OF(w1_c) + LENGTH_OF(w2_c);
|
|
const unsigned int r_len = (w_len + 1) / 2;
|
|
void *r0 = tail_alloc(r_len);
|
|
void *r1 = tail_alloc(r_len);
|
|
void *r2 = tail_alloc(r_len);
|
|
const struct iovec r0_iov_[] = {
|
|
{
|
|
.iov_base = r0,
|
|
.iov_len = r_len
|
|
}
|
|
};
|
|
struct iovec *r0_iov = tail_memdup(r0_iov_, sizeof(r0_iov_));
|
|
const struct iovec r1_iov_[] = {
|
|
{
|
|
.iov_base = r1,
|
|
.iov_len = r_len
|
|
},
|
|
{
|
|
.iov_base = r2,
|
|
.iov_len = r_len
|
|
}
|
|
};
|
|
struct iovec *r1_iov = tail_memdup(r1_iov_, sizeof(r1_iov_));
|
|
|
|
const struct mmsghdr r_mmh_[] = {
|
|
{
|
|
.msg_hdr = {
|
|
.msg_iov = r0_iov,
|
|
.msg_iovlen = ARRAY_SIZE(r0_iov_),
|
|
}
|
|
}, {
|
|
.msg_hdr = {
|
|
.msg_iov = r1_iov,
|
|
.msg_iovlen = ARRAY_SIZE(r1_iov_),
|
|
}
|
|
}
|
|
};
|
|
void *r_mmh = tail_memdup(r_mmh_, sizeof(r_mmh_));
|
|
const unsigned int n_r_mmh = ARRAY_SIZE(r_mmh_);
|
|
|
|
static const char r0_c[] = "01234567";
|
|
const char *r0_d = hexdump_strdup(r0_c);
|
|
static const char r1_c[] = "89abcde";
|
|
const char *r1_d = hexdump_strdup(r1_c);
|
|
|
|
assert(recv_mmsg(0, r_mmh, n_r_mmh, MSG_DONTWAIT, NULL) == (int) n_r_mmh);
|
|
assert(close(0) == 0);
|
|
tprintf("recvmmsg(0, {{{msg_name(0)=NULL, msg_iov(%u)=[{\"%s\", %u}]"
|
|
", msg_controllen=0, msg_flags=0}, %u}"
|
|
", {{msg_name(0)=NULL, msg_iov(%u)=[{\"%s\", %u}, {\"\", %u}]"
|
|
", msg_controllen=0, msg_flags=0}, %u}}, %u"
|
|
", MSG_DONTWAIT, NULL) = %d (left NULL)\n"
|
|
" = %u buffers in vector 0\n"
|
|
" * %u bytes in buffer 0\n"
|
|
" | 00000 %-49s %-16s |\n"
|
|
" = %u buffers in vector 1\n"
|
|
" * %u bytes in buffer 0\n"
|
|
" | 00000 %-49s %-16s |\n",
|
|
ARRAY_SIZE(r0_iov_), r0_c, r_len, LENGTH_OF(r0_c),
|
|
ARRAY_SIZE(r1_iov_), r1_c, r_len, r_len, LENGTH_OF(r1_c),
|
|
n_r_mmh, r,
|
|
ARRAY_SIZE(r0_iov_), LENGTH_OF(r0_c), r0_d, r0_c,
|
|
ARRAY_SIZE(r1_iov_), LENGTH_OF(r1_c), r1_d, r1_c);
|
|
|
|
tprintf("+++ exited with 0 +++\n");
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
|
|
SKIP_MAIN_UNDEFINED("(__NR_sendmmsg || HAVE_SENDMMSG) && (__NR_recvmmsg || HAVE_RECVMMSG)")
|
|
|
|
#endif
|