1/*
2 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 *    derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include "tests.h"
29#include <asm/unistd.h>
30
31#ifdef __NR_sendfile
32
33# include <assert.h>
34# include <errno.h>
35# include <fcntl.h>
36# include <stdio.h>
37# include <stdint.h>
38# include <unistd.h>
39# include <sys/socket.h>
40# include <sys/stat.h>
41
42int
43main(int ac, const char **av)
44{
45	assert(ac == 1);
46
47	(void) close(0);
48	if (open("/dev/zero", O_RDONLY) != 0)
49		perror_msg_and_skip("open: %s", "/dev/zero");
50
51	int sv[2];
52	if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv))
53		perror_msg_and_skip("socketpair");
54
55	int reg_in = open(av[0], O_RDONLY);
56	if (reg_in < 0)
57		perror_msg_and_fail("open: %s", av[0]);
58
59	struct stat stb;
60	assert(fstat(reg_in, &stb) == 0);
61	const size_t blen = stb.st_size / 3;
62	const size_t alen = stb.st_size - blen;
63	assert(S_ISREG(stb.st_mode) && blen > 0);
64
65	const size_t page_len = get_page_size();
66	assert(syscall(__NR_sendfile, 0, 1, NULL, page_len) == -1);
67	if (EBADF != errno)
68		perror_msg_and_skip("sendfile");
69	printf("sendfile(0, 1, NULL, %lu) = -1 EBADF (%m)\n",
70	       (unsigned long) page_len);
71
72	uint32_t *p_off = tail_alloc(sizeof(uint32_t));
73	void *p = p_off + 1;
74	*p_off = 0;
75
76	assert(syscall(__NR_sendfile, 0, 1, p, page_len) == -1);
77	printf("sendfile(0, 1, %#lx, %lu) = -1 EFAULT (%m)\n",
78	       (unsigned long) p, (unsigned long) page_len);
79
80	assert(syscall(__NR_sendfile, sv[1], reg_in, NULL, alen)
81	       == (long) alen);
82	printf("sendfile(%d, %d, NULL, %lu) = %lu\n",
83	       sv[1], reg_in, (unsigned long) alen,
84	       (unsigned long) alen);
85
86	p = p_off;
87	if (syscall(__NR_sendfile, sv[1], reg_in, p_off, alen) != (long) alen) {
88		printf("sendfile(%d, %d, %#lx, %lu) = -1 EFAULT (%m)\n",
89		       sv[1], reg_in, (unsigned long) p_off,
90		       (unsigned long) alen);
91		--p_off;
92		*p_off = 0;
93		assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, alen)
94		       == (long) alen);
95	}
96	printf("sendfile(%d, %d, [0] => [%lu], %lu) = %lu\n",
97	       sv[1], reg_in, (unsigned long) alen,
98	       (unsigned long) alen, (unsigned long) alen);
99
100	assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, stb.st_size + 1)
101	       == (long) blen);
102	printf("sendfile(%d, %d, [%lu] => [%lu], %lu) = %lu\n",
103	       sv[1], reg_in, (unsigned long) alen,
104	       (unsigned long) stb.st_size,
105	       (unsigned long) stb.st_size + 1,
106	       (unsigned long) blen);
107
108	if (p_off != p) {
109		uint64_t *p_off64 = (uint64_t *) p_off;
110		*p_off64 = 0xcafef00dfacefeedULL;
111		assert(syscall(__NR_sendfile, sv[1], reg_in, p_off64, 1) == -1);
112		printf("sendfile(%d, %d, [14627392582579060461], 1)"
113		       " = -1 EINVAL (%m)\n", sv[1], reg_in);
114		*p_off64 = 0xdefaced;
115	} else {
116		*p_off = 0xdefaced;
117	}
118	assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, 1) == 0);
119	printf("sendfile(%d, %d, [233811181], 1) = 0\n",
120	       sv[1], reg_in);
121
122	puts("+++ exited with 0 +++");
123	return 0;
124}
125
126#else
127
128SKIP_MAIN_UNDEFINED("__NR_sendfile")
129
130#endif
131