2 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
3 * Copyright (c) 2015-2018 The strace developers.
6 * SPDX-License-Identifier: GPL-2.0-or-later
10 #include <asm/unistd.h>
21 # include <sys/socket.h>
27 if (open("/dev/zero", O_RDONLY) != 0)
28 perror_msg_and_skip("open: %s", "/dev/zero");
31 if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv))
32 perror_msg_and_skip("socketpair");
34 const unsigned int page_size = get_page_size();
35 assert(syscall(__NR_sendfile, 0, 1, NULL, page_size) == -1);
37 perror_msg_and_skip("sendfile");
38 printf("sendfile(0, 1, NULL, %u) = -1 EBADF (%m)\n", page_size);
40 unsigned int file_size = 0;
41 socklen_t optlen = sizeof(file_size);
42 if (getsockopt(sv[1], SOL_SOCKET, SO_SNDBUF, &file_size, &optlen))
43 perror_msg_and_fail("getsockopt");
45 error_msg_and_skip("SO_SNDBUF too small: %u", file_size);
48 if (file_size / 16 > page_size)
49 file_size = page_size * 16;
50 const unsigned int blen = file_size / 3;
51 const unsigned int alen = file_size - blen;
53 static const char fname[] = "sendfile-tmpfile";
54 int reg_in = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0600);
56 perror_msg_and_fail("open: %s", fname);
58 perror_msg_and_fail("unlink: %s", fname);
59 if (ftruncate(reg_in, file_size))
60 perror_msg_and_fail("ftruncate: %s", fname);
62 TAIL_ALLOC_OBJECT_VAR_PTR(uint32_t, p_off);
66 assert(syscall(__NR_sendfile, 0, 1, p, page_size) == -1);
67 printf("sendfile(0, 1, %p, %u) = -1 EFAULT (%m)\n", p, page_size);
69 assert(syscall(__NR_sendfile, sv[1], reg_in, NULL, alen)
71 printf("sendfile(%d, %d, NULL, %u) = %u\n",
72 sv[1], reg_in, alen, alen);
75 if (syscall(__NR_sendfile, sv[1], reg_in, p_off, alen) != (long) alen) {
76 printf("sendfile(%d, %d, %#lx, %u) = -1 EFAULT (%m)\n",
77 sv[1], reg_in, (unsigned long) p_off, alen);
80 assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, alen)
83 printf("sendfile(%d, %d, [0] => [%u], %u) = %u\n",
84 sv[1], reg_in, alen, alen, alen);
86 assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, file_size + 1)
88 printf("sendfile(%d, %d, [%u] => [%u], %u) = %u\n",
89 sv[1], reg_in, alen, file_size, file_size + 1, blen);
92 uint64_t *p_off64 = (uint64_t *) p_off;
93 *p_off64 = 0xcafef00dfacefeedULL;
94 assert(syscall(__NR_sendfile, sv[1], reg_in, p_off64, 1) == -1);
95 printf("sendfile(%d, %d, [14627392582579060461], 1)"
96 " = -1 EINVAL (%m)\n", sv[1], reg_in);
101 assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, 1) == 0);
102 printf("sendfile(%d, %d, [233811181], 1) = 0\n",
105 puts("+++ exited with 0 +++");
111 SKIP_MAIN_UNDEFINED("__NR_sendfile")