Dmitry V. Levin
c6782f144a
strace test suite is now provided under the terms of the GNU General Public License version 2 or later, see tests/COPYING for more details.
114 lines
3.1 KiB
C
114 lines
3.1 KiB
C
/*
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* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2015-2017 The strace developers.
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* All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "tests.h"
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#include <asm/unistd.h>
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#ifdef __NR_sendfile
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# include <assert.h>
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# include <errno.h>
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# include <fcntl.h>
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# include <stdio.h>
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# include <stdint.h>
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# include <stdlib.h>
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# include <unistd.h>
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# include <sys/socket.h>
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int
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main(void)
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{
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(void) close(0);
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if (open("/dev/zero", O_RDONLY) != 0)
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perror_msg_and_skip("open: %s", "/dev/zero");
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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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const unsigned int page_size = get_page_size();
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assert(syscall(__NR_sendfile, 0, 1, NULL, page_size) == -1);
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if (EBADF != errno)
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perror_msg_and_skip("sendfile");
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printf("sendfile(0, 1, NULL, %u) = -1 EBADF (%m)\n", page_size);
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unsigned int file_size = 0;
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socklen_t optlen = sizeof(file_size);
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if (getsockopt(sv[1], SOL_SOCKET, SO_SNDBUF, &file_size, &optlen))
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perror_msg_and_fail("getsockopt");
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if (file_size < 1024)
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error_msg_and_skip("SO_SNDBUF too small: %u", file_size);
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file_size /= 4;
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if (file_size / 16 > page_size)
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file_size = page_size * 16;
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const unsigned int blen = file_size / 3;
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const unsigned int alen = file_size - blen;
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static const char fname[] = "sendfile-tmpfile";
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int reg_in = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0600);
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if (reg_in < 0)
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perror_msg_and_fail("open: %s", fname);
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if (unlink(fname))
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perror_msg_and_fail("unlink: %s", fname);
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if (ftruncate(reg_in, file_size))
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perror_msg_and_fail("ftruncate: %s", fname);
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TAIL_ALLOC_OBJECT_VAR_PTR(uint32_t, p_off);
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void *p = p_off + 1;
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*p_off = 0;
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assert(syscall(__NR_sendfile, 0, 1, p, page_size) == -1);
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printf("sendfile(0, 1, %p, %u) = -1 EFAULT (%m)\n", p, page_size);
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assert(syscall(__NR_sendfile, sv[1], reg_in, NULL, alen)
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== (long) alen);
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printf("sendfile(%d, %d, NULL, %u) = %u\n",
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sv[1], reg_in, alen, alen);
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p = p_off;
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if (syscall(__NR_sendfile, sv[1], reg_in, p_off, alen) != (long) alen) {
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printf("sendfile(%d, %d, %#lx, %u) = -1 EFAULT (%m)\n",
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sv[1], reg_in, (unsigned long) p_off, alen);
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--p_off;
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*p_off = 0;
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assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, alen)
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== (long) alen);
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}
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printf("sendfile(%d, %d, [0] => [%u], %u) = %u\n",
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sv[1], reg_in, alen, alen, alen);
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assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, file_size + 1)
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== (long) blen);
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printf("sendfile(%d, %d, [%u] => [%u], %u) = %u\n",
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sv[1], reg_in, alen, file_size, file_size + 1, blen);
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if (p_off != p) {
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uint64_t *p_off64 = (uint64_t *) p_off;
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*p_off64 = 0xcafef00dfacefeedULL;
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assert(syscall(__NR_sendfile, sv[1], reg_in, p_off64, 1) == -1);
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printf("sendfile(%d, %d, [14627392582579060461], 1)"
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" = -1 EINVAL (%m)\n", sv[1], reg_in);
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*p_off64 = 0xdefaced;
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} else {
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*p_off = 0xdefaced;
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}
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assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, 1) == 0);
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printf("sendfile(%d, %d, [233811181], 1) = 0\n",
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sv[1], reg_in);
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puts("+++ exited with 0 +++");
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return 0;
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}
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#else
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SKIP_MAIN_UNDEFINED("__NR_sendfile")
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#endif
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