tests: avoid hitting SO_SNDBUF limit in sendfile/sendfile64 tests
Do not assume that an executable is small enough and SO_SNDBUF is large enough so that the executable could be sendfile'ed into a socket pair. * tests/sendfile.c (main): Create a regular file of the right size to avoid hitting SO_SNDBUF limit. * tests/sendfile64.c: Likewise. Reported-by: Andreas Schwab <schwab@linux-m68k.org>
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@ -36,15 +36,13 @@
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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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# include <sys/stat.h>
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int
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main(int ac, const char **av)
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main(void)
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{
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assert(ac == 1);
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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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@ -53,58 +51,62 @@ main(int ac, const char **av)
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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[0], O_RDONLY);
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if (reg_in < 0)
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perror_msg_and_fail("open: %s", av[0]);
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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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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, %lu) = -1 EBADF (%m)\n",
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(unsigned long) page_len);
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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_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, 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, %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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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, %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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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] => [%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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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, stb.st_size + 1)
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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, [%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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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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@ -36,15 +36,13 @@
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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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# include <sys/stat.h>
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int
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main(int ac, const char **av)
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main(void)
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{
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assert(ac == 1);
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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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@ -53,50 +51,55 @@ main(int ac, const char **av)
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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[0], O_RDONLY);
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if (reg_in < 0)
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perror_msg_and_fail("open: %s", av[0]);
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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_sendfile64, 0, 1, NULL, page_len) == -1);
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const unsigned int page_size = get_page_size();
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assert(syscall(__NR_sendfile64, 0, 1, NULL, page_size) == -1);
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if (EBADF != errno)
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perror_msg_and_skip("sendfile64");
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printf("sendfile64(0, 1, NULL, %lu) = -1 EBADF (%m)\n",
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(unsigned long) page_len);
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printf("sendfile64(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[] = "sendfile64-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_CONST_PTR(uint64_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_sendfile64, 0, 1, p, page_len) == -1);
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printf("sendfile64(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_sendfile64, 0, 1, p, page_size) == -1);
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printf("sendfile64(0, 1, %p, %u) = -1 EFAULT (%m)\n", p, page_size);
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assert(syscall(__NR_sendfile64, sv[1], reg_in, NULL, alen)
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== (long) alen);
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printf("sendfile64(%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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printf("sendfile64(%d, %d, NULL, %u) = %u\n",
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sv[1], reg_in, alen, alen);
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assert(syscall(__NR_sendfile64, sv[1], reg_in, p_off, alen)
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== (long) alen);
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printf("sendfile64(%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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printf("sendfile64(%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_sendfile64, sv[1], reg_in, p_off, stb.st_size + 1)
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assert(syscall(__NR_sendfile64, sv[1], reg_in, p_off, file_size + 1)
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== (long) blen);
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printf("sendfile64(%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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printf("sendfile64(%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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*p_off = 0xcafef00dfacefeedULL;
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assert(syscall(__NR_sendfile64, sv[1], reg_in, p_off, 1) == -1);
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