Dmitry V. Levin
54ba3b5c32
* tests/sendfile.c: Use SKIP_MAIN_UNDEFINED. (main): Use assert, perror_msg_and_fail, perror_msg_and_skip, and tail_alloc.
131 lines
4.2 KiB
C
131 lines
4.2 KiB
C
/*
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* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
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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 <sys/syscall.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 <unistd.h>
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# include <sys/socket.h>
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# include <sys/stat.h>
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int
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main(int ac, const char **av)
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{
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assert(ac == 2);
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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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int reg_in = open(av[1], O_RDONLY);
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if (reg_in < 0)
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perror_msg_and_fail("open: %s", av[1]);
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struct stat stb;
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assert(fstat(reg_in, &stb) == 0);
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const size_t blen = stb.st_size / 3;
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const size_t alen = stb.st_size - blen;
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assert(S_ISREG(stb.st_mode) && blen > 0);
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const size_t page_len = get_page_size();
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assert(syscall(__NR_sendfile, 0, 1, NULL, page_len) == -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, %lu) = -1 EBADF (%m)\n",
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(unsigned long) page_len);
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uint32_t *p_off = tail_alloc(sizeof(uint32_t));
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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_len) == -1);
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printf("sendfile(0, 1, %#lx, %lu) = -1 EFAULT (%m)\n",
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(unsigned long) p, (unsigned long) page_len);
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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, %lu) = %lu\n",
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sv[1], reg_in, (unsigned long) alen,
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(unsigned long) 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, %lu) = -1 EFAULT (%m)\n",
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sv[1], reg_in, (unsigned long) p_off,
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(unsigned long) 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] => [%lu], %lu) = %lu\n",
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sv[1], reg_in, (unsigned long) alen,
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(unsigned long) alen, (unsigned long) alen);
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assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, stb.st_size + 1)
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== (long) blen);
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printf("sendfile(%d, %d, [%lu] => [%lu], %lu) = %lu\n",
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sv[1], reg_in, (unsigned long) alen,
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(unsigned long) stb.st_size,
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(unsigned long) stb.st_size + 1,
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(unsigned long) 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 = 0xcafef00dfacefeed;
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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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