107 lines
3.4 KiB
C
107 lines
3.4 KiB
C
/*
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* Copyright (c) 2014-2016 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2014-2017 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tests.h"
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#include <assert.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/socket.h>
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int main(int ac, const char **av)
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{
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assert(ac > 0);
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int fds[ac];
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static const char sample[] =
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"\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff";
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const unsigned int data_size = sizeof(sample) - 1;
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void *data = tail_alloc(data_size);
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memcpy(data, sample, data_size);
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TAIL_ALLOC_OBJECT_CONST_PTR(struct iovec, iov);
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iov->iov_base = data;
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iov->iov_len = data_size;
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TAIL_ALLOC_OBJECT_CONST_PTR(struct msghdr, mh);
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memset(mh, 0, sizeof(*mh));
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mh->msg_iov = iov;
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mh->msg_iovlen = 1;
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int i;
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while ((i = open("/dev/null", O_RDWR)) <= ac + 2)
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assert(i >= 0);
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while (i > 2)
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assert(close(i--) == 0);
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assert(close(0) == 0);
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int sv[2];
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if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv))
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perror_msg_and_skip("socketpair");
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int one = 1;
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if (setsockopt(sv[0], SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)))
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perror_msg_and_skip("setsockopt");
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assert((fds[0] = open("/dev/null", O_RDWR)) == 4);
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for (i = 1; i < ac; ++i)
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assert((fds[i] = open(av[i], O_RDONLY)) == i + 4);
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unsigned int cmsg_size = CMSG_SPACE(sizeof(fds));
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struct cmsghdr *cmsg = tail_alloc(cmsg_size);
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memset(cmsg, 0, cmsg_size);
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cmsg->cmsg_level = SOL_SOCKET;
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cmsg->cmsg_type = SCM_RIGHTS;
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cmsg->cmsg_len = CMSG_LEN(sizeof(fds));
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memcpy(CMSG_DATA(cmsg), fds, sizeof(fds));
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mh->msg_control = cmsg;
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mh->msg_controllen = cmsg_size;
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assert(sendmsg(sv[1], mh, 0) == (int) data_size);
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assert(close(sv[1]) == 0);
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assert(open("/dev/null", O_RDWR) == sv[1]);
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for (i = 0; i < ac; ++i) {
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assert(close(fds[i]) == 0);
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fds[i] = 0;
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}
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cmsg_size += CMSG_SPACE(sizeof(struct ucred));
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cmsg = tail_alloc(cmsg_size);
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memset(cmsg, 0, cmsg_size);
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mh->msg_control = cmsg;
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mh->msg_controllen = cmsg_size;
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assert(recvmsg(0, mh, 0) == (int) data_size);
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assert(close(0) == 0);
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return 0;
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}
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