/*
- * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
+ * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
+ * Copyright (c) 2015-2017 The strace developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
*/
#include "tests.h"
-#include <assert.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <unistd.h>
-#include <sys/mman.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/syscall.h>
+#include <asm/unistd.h>
#ifdef __NR_sendfile
+# include <assert.h>
+# include <errno.h>
+# include <fcntl.h>
+# include <stdio.h>
+# include <stdint.h>
+# include <stdlib.h>
+# include <unistd.h>
+# include <sys/socket.h>
+
int
-main(int ac, const char **av)
+main(void)
{
- assert(ac == 2);
-
(void) close(0);
if (open("/dev/zero", O_RDONLY) != 0)
- return 77;
+ perror_msg_and_skip("open: %s", "/dev/zero");
int sv[2];
if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv))
- return 77;
-
- int reg_in = open(av[1], O_RDONLY);
+ perror_msg_and_skip("socketpair");
+
+ const unsigned int page_size = get_page_size();
+ assert(syscall(__NR_sendfile, 0, 1, NULL, page_size) == -1);
+ if (EBADF != errno)
+ perror_msg_and_skip("sendfile");
+ printf("sendfile(0, 1, NULL, %u) = -1 EBADF (%m)\n", page_size);
+
+ unsigned int file_size = 0;
+ socklen_t optlen = sizeof(file_size);
+ if (getsockopt(sv[1], SOL_SOCKET, SO_SNDBUF, &file_size, &optlen))
+ perror_msg_and_fail("getsockopt");
+ if (file_size < 1024)
+ error_msg_and_skip("SO_SNDBUF too small: %u", file_size);
+
+ file_size /= 4;
+ if (file_size / 16 > page_size)
+ file_size = page_size * 16;
+ const unsigned int blen = file_size / 3;
+ const unsigned int alen = file_size - blen;
+
+ static const char fname[] = "sendfile-tmpfile";
+ int reg_in = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0600);
if (reg_in < 0)
- return 77;
-
- struct stat stb;
- if (fstat(reg_in, &stb))
- return 77;
- const size_t blen = stb.st_size / 3;
- const size_t alen = stb.st_size - blen;
- assert(S_ISREG(stb.st_mode) && blen > 0);
-
- const size_t page_len = sysconf(_SC_PAGESIZE);
- if (!syscall(__NR_sendfile, 0, 1, NULL, page_len) ||
- EBADF != errno)
- return 77;
- printf("sendfile(0, 1, NULL, %lu) = -1 EBADF (Bad file descriptor)\n",
- (unsigned long) page_len);
-
- void *p = mmap(NULL, page_len * 2, PROT_READ | PROT_WRITE,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
- if (MAP_FAILED == p || munmap(p + page_len, page_len))
- return 77;
-
- if (!syscall(__NR_sendfile, 0, 1, p + page_len, page_len))
- return 77;
- printf("sendfile(0, 1, %#lx, %lu) = -1 EFAULT (Bad address)\n",
- (unsigned long) p + page_len, (unsigned long) page_len);
-
- if (syscall(__NR_sendfile, sv[1], reg_in, NULL, alen) != (long) alen)
- return 77;
- printf("sendfile(%d, %d, NULL, %lu) = %lu\n",
- sv[1], reg_in, (unsigned long) alen,
- (unsigned long) alen);
-
- uint32_t *p_off = p + page_len - sizeof(uint32_t);
+ perror_msg_and_fail("open: %s", fname);
+ if (unlink(fname))
+ perror_msg_and_fail("unlink: %s", fname);
+ if (ftruncate(reg_in, file_size))
+ perror_msg_and_fail("ftruncate: %s", fname);
+
+ TAIL_ALLOC_OBJECT_VAR_PTR(uint32_t, p_off);
+ void *p = p_off + 1;
+ *p_off = 0;
+
+ assert(syscall(__NR_sendfile, 0, 1, p, page_size) == -1);
+ printf("sendfile(0, 1, %p, %u) = -1 EFAULT (%m)\n", p, page_size);
+
+ assert(syscall(__NR_sendfile, sv[1], reg_in, NULL, alen)
+ == (long) alen);
+ printf("sendfile(%d, %d, NULL, %u) = %u\n",
+ sv[1], reg_in, alen, alen);
+
+ p = p_off;
if (syscall(__NR_sendfile, sv[1], reg_in, p_off, alen) != (long) alen) {
- printf("sendfile(%d, %d, %#lx, %lu) = -1 EFAULT (Bad address)\n",
- sv[1], reg_in, (unsigned long) p_off,
- (unsigned long) alen);
+ printf("sendfile(%d, %d, %#lx, %u) = -1 EFAULT (%m)\n",
+ sv[1], reg_in, (unsigned long) p_off, alen);
--p_off;
- if (syscall(__NR_sendfile, sv[1], reg_in, p_off, alen)
- != (long) alen)
- return 77;
+ *p_off = 0;
+ assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, alen)
+ == (long) alen);
}
- printf("sendfile(%d, %d, [0] => [%lu], %lu) = %lu\n",
- sv[1], reg_in, (unsigned long) alen,
- (unsigned long) alen, (unsigned long) alen);
-
- if (syscall(__NR_sendfile, sv[1], reg_in, p_off, stb.st_size + 1)
- != (long) blen)
- return 77;
- printf("sendfile(%d, %d, [%lu] => [%lu], %lu) = %lu\n",
- sv[1], reg_in, (unsigned long) alen,
- (unsigned long) stb.st_size,
- (unsigned long) stb.st_size + 1,
- (unsigned long) blen);
-
- if (p_off == p + page_len - sizeof(uint64_t)) {
+ printf("sendfile(%d, %d, [0] => [%u], %u) = %u\n",
+ sv[1], reg_in, alen, alen, alen);
+
+ assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, file_size + 1)
+ == (long) blen);
+ printf("sendfile(%d, %d, [%u] => [%u], %u) = %u\n",
+ sv[1], reg_in, alen, file_size, file_size + 1, blen);
+
+ if (p_off != p) {
uint64_t *p_off64 = (uint64_t *) p_off;
- *p_off64 = 0xcafef00dfacefeed;
- if (!syscall(__NR_sendfile, sv[1], reg_in, p_off64, 1))
- return 77;
- printf("sendfile(%d, %d, [14627392582579060461], 1) = -1 EINVAL (Invalid argument)\n",
- sv[1], reg_in);
+ *p_off64 = 0xcafef00dfacefeedULL;
+ assert(syscall(__NR_sendfile, sv[1], reg_in, p_off64, 1) == -1);
+ printf("sendfile(%d, %d, [14627392582579060461], 1)"
+ " = -1 EINVAL (%m)\n", sv[1], reg_in);
*p_off64 = 0xdefaced;
} else {
*p_off = 0xdefaced;
}
- if (syscall(__NR_sendfile, sv[1], reg_in, p_off, 1))
- return 77;
+ assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, 1) == 0);
printf("sendfile(%d, %d, [233811181], 1) = 0\n",
sv[1], reg_in);
#else
-int
-main(void)
-{
- return 77;
-}
+SKIP_MAIN_UNDEFINED("__NR_sendfile")
#endif
projects / strace / blobdiff