Improve system call wrappers

This change improves copy_file_range(), sendfile(), splice(), openpty(),
closefrom(), close_range(), fadvise() and posix_fadvise() in addition to
writing tests that confirm things like errno and seeking behavior across
platforms. We now less aggressively polyfill behavior with some of these
functions when the platform support isn't available. Please see:

https://justine.lol/cosmopolitan/functions.html
This commit is contained in:
Justine Tunney 2022-09-19 15:01:48 -07:00
parent 224c12f54d
commit c7a8cd21e9
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
89 changed files with 1151 additions and 414 deletions

View file

@ -21,6 +21,7 @@
#include "libc/errno.h"
#include "libc/runtime/runtime.h"
#include "libc/sysv/consts/f.h"
#include "libc/testlib/subprocess.h"
#include "libc/testlib/testlib.h"
void SetUp(void) {
@ -34,6 +35,10 @@ void SetUp(void) {
}
}
TEST(closefrom, ebadf) {
ASSERT_SYS(EBADF, -1, closefrom(-2));
}
TEST(closefrom, test) {
ASSERT_SYS(0, 3, dup(2));
ASSERT_SYS(0, 4, dup(2));
@ -48,14 +53,23 @@ TEST(closefrom, test) {
}
TEST(close_range, test) {
ASSERT_SYS(0, 3, dup(2));
ASSERT_SYS(0, 4, dup(2));
ASSERT_SYS(0, 5, dup(2));
ASSERT_SYS(0, 6, dup(2));
EXPECT_SYS(0, 0, close_range(3, -1, 0));
ASSERT_SYS(0, 0, fcntl(2, F_GETFD));
ASSERT_SYS(EBADF, -1, fcntl(3, F_GETFD));
ASSERT_SYS(EBADF, -1, fcntl(4, F_GETFD));
ASSERT_SYS(EBADF, -1, fcntl(5, F_GETFD));
ASSERT_SYS(EBADF, -1, fcntl(6, F_GETFD));
if (IsLinux() || IsFreebsd()) {
ASSERT_SYS(0, 3, dup(2));
ASSERT_SYS(0, 4, dup(2));
ASSERT_SYS(0, 5, dup(2));
ASSERT_SYS(0, 6, dup(2));
EXPECT_SYS(0, 0, close_range(3, -1, 0));
ASSERT_SYS(0, 0, fcntl(2, F_GETFD));
ASSERT_SYS(EBADF, -1, fcntl(3, F_GETFD));
ASSERT_SYS(EBADF, -1, fcntl(4, F_GETFD));
ASSERT_SYS(EBADF, -1, fcntl(5, F_GETFD));
ASSERT_SYS(EBADF, -1, fcntl(6, F_GETFD));
} else {
EXPECT_SYS(ENOSYS, -1, close_range(3, -1, 0));
}
}
TEST(close_range, ignoresNonexistantRanges) {
if (!IsLinux() && !IsFreebsd()) return;
EXPECT_SYS(0, 0, close_range(-2, -1, 0));
}

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@ -0,0 +1,161 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi
Copyright 2022 Justine Alexandra Roberts Tunney
Permission to use, copy, modify, and/or distribute this software for
any purpose with or without fee is hereby granted, provided that the
above copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
*/
#include "libc/calls/calls.h"
#include "libc/calls/struct/stat.h"
#include "libc/calls/syscall-sysv.internal.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/mem/gc.h"
#include "libc/mem/mem.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/rand.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/posix.h"
#include "libc/testlib/testlib.h"
#include "libc/x/x.h"
#include "libc/x/xasprintf.h"
char testlib_enable_tmp_setup_teardown;
void Make(const char *path, int mode) {
int fd, n = lemur64() & 0xfffff;
char *data = _gc(malloc(n));
rngset(data, n, lemur64, -1);
ASSERT_NE(-1, (fd = creat(path, mode)));
ASSERT_SYS(0, n, write(fd, data, n));
ASSERT_SYS(0, 0, close(fd));
}
void Copy(const char *from, const char *to) {
ssize_t rc;
char buf[512];
struct stat st;
int fdin, fdout, e = errno;
ASSERT_NE(-1, (fdin = open(from, O_RDONLY)));
ASSERT_SYS(0, 0, fstat(fdin, &st));
ASSERT_NE(-1, (fdout = creat(to, st.st_mode | 0400)));
if (!(IsXnu() || IsOpenbsd())) {
ASSERT_SYS(0, 0, posix_fadvise(fdin, 0, st.st_size, POSIX_FADV_SEQUENTIAL));
}
ASSERT_SYS(0, 0, ftruncate(fdout, st.st_size));
while ((rc = copy_file_range(fdin, 0, fdout, 0, -1u, 0))) {
if (rc == -1) {
ASSERT_EQ(ENOSYS, errno);
errno = e;
while ((rc = read(fdin, buf, sizeof(buf)))) {
ASSERT_NE(-1, rc);
ASSERT_EQ(rc, write(fdout, buf, rc));
}
break;
}
}
ASSERT_SYS(0, 0, close(fdin));
ASSERT_SYS(0, 0, close(fdout));
}
TEST(copy_file_range, test) {
char *p, *q;
size_t n, m;
Make("foo", 0644);
Copy("foo", "bar");
p = _gc(xslurp("foo", &n));
q = _gc(xslurp("bar", &m));
ASSERT_EQ(n, m);
ASSERT_EQ(0, memcmp(p, q, n));
}
bool HasCopyFileRange(void) {
bool ok;
int rc, e;
e = errno;
rc = copy_file_range(-1, 0, -1, 0, 0, 0);
ok = rc == -1 && errno == EBADF;
errno = e;
return ok;
}
TEST(copy_file_range, badFd) {
if (!HasCopyFileRange()) return;
ASSERT_SYS(EBADF, -1, copy_file_range(-1, 0, -1, 0, -1u, 0));
}
TEST(copy_file_range, badFlags) {
if (!HasCopyFileRange()) return;
ASSERT_SYS(EINVAL, -1, copy_file_range(0, 0, 1, 0, -1u, -1));
}
TEST(copy_file_range, differentFileSystems) {
if (!IsLinux()) return;
if (!HasCopyFileRange()) return;
ASSERT_SYS(0, 3, open("/proc/stat", 0));
ASSERT_SYS(0, 4, creat("foo", 0644));
ASSERT_SYS(EXDEV, -1, copy_file_range(3, 0, 4, 0, -1u, 0));
ASSERT_SYS(0, 0, close(4));
ASSERT_SYS(0, 0, close(3));
}
TEST(copy_file_range, twoDifferentFiles) {
char buf[16] = {0};
int64_t i = 1, o = 0;
if (!HasCopyFileRange()) return;
ASSERT_SYS(0, 3, open("foo", O_RDWR | O_CREAT | O_TRUNC, 0644));
ASSERT_SYS(0, 4, open("bar", O_RDWR | O_CREAT | O_TRUNC, 0644));
ASSERT_SYS(0, 5, pwrite(3, "hello", 5, 0));
ASSERT_SYS(0, 4, copy_file_range(3, &i, 4, &o, 4, 0));
ASSERT_SYS(0, 0, copy_file_range(3, &i, 4, &o, 0, 0));
ASSERT_EQ(5, i);
ASSERT_EQ(4, o);
ASSERT_SYS(0, 4, read(4, buf, 16));
ASSERT_STREQ("ello", buf);
ASSERT_SYS(0, 0, close(4));
ASSERT_SYS(0, 0, close(3));
}
TEST(copy_file_range, sameFile_doesntChangeFilePointer) {
char buf[16] = {0};
int64_t i = 1, o = 5;
if (!HasCopyFileRange()) return;
ASSERT_SYS(0, 3, open("foo", O_RDWR | O_CREAT | O_TRUNC, 0644));
ASSERT_SYS(0, 5, pwrite(3, "hello", 5, 0));
ASSERT_SYS(0, 4, copy_file_range(3, &i, 3, &o, 4, 0));
ASSERT_EQ(5, i);
ASSERT_EQ(9, o);
ASSERT_SYS(0, 9, read(3, buf, 16));
ASSERT_STREQ("helloello", buf);
ASSERT_SYS(0, 0, close(3));
}
TEST(copy_file_range, overlappingRange) {
int rc;
int64_t i = 1, o = 2;
if (!HasCopyFileRange()) return;
ASSERT_SYS(0, 3, open("foo", O_RDWR | O_CREAT | O_TRUNC, 0644));
ASSERT_SYS(0, 5, pwrite(3, "hello", 5, 0));
rc = copy_file_range(3, &i, 3, &o, 4, 0);
ASSERT_EQ(-1, rc);
if (IsLinux()) {
// [wut] rhel7 returns enosys here
ASSERT_TRUE(errno == EINVAL || errno == ENOSYS);
} else {
ASSERT_TRUE(errno == EINVAL);
}
errno = 0;
ASSERT_SYS(0, 0, close(3));
}

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@ -17,7 +17,7 @@
PERFORMANCE OF THIS SOFTWARE.
*/
#include "libc/calls/calls.h"
#include "libc/calls/copyfd.internal.h"
#include "libc/mem/copyfd.internal.h"
#include "libc/calls/internal.h"
#include "libc/calls/ioctl.h"
#include "libc/calls/pledge.internal.h"

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@ -0,0 +1,106 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi
Copyright 2022 Justine Alexandra Roberts Tunney
Permission to use, copy, modify, and/or distribute this software for
any purpose with or without fee is hereby granted, provided that the
above copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
*/
#include "libc/calls/calls.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/limits.h"
#include "libc/runtime/runtime.h"
#include "libc/sysv/consts/madv.h"
#include "libc/sysv/consts/posix.h"
#include "libc/testlib/testlib.h"
#include "libc/x/x.h"
char testlib_enable_tmp_setup_teardown;
void SetUp(void) {
if (IsOpenbsd() || IsXnu()) exit(0);
}
TEST(fadvise, ebadf) {
ASSERT_SYS(EBADF, -1, fadvise(-1, 0, 0, MADV_SEQUENTIAL));
}
TEST(posix_fadvise, ebadf) {
ASSERT_SYS(0, EBADF, posix_fadvise(-1, 0, 0, POSIX_FADV_SEQUENTIAL));
}
TEST(fadvise, test) {
ASSERT_SYS(0, 0, xbarf("foo", "hello", -1));
ASSERT_SYS(0, 3, open("foo", 0));
ASSERT_SYS(0, 0, fadvise(3, 0, 0, MADV_SEQUENTIAL));
ASSERT_SYS(0, 0, close(3));
}
TEST(posix_fadvise, test) {
ASSERT_SYS(0, 0, xbarf("foo", "hello", -1));
ASSERT_SYS(0, 3, open("foo", 0));
ASSERT_SYS(0, 0, posix_fadvise(3, 0, 0, POSIX_FADV_SEQUENTIAL));
ASSERT_SYS(0, 0, close(3));
}
TEST(fadvise, testBadAdvice) {
ASSERT_SYS(0, 0, xbarf("foo", "hello", -1));
ASSERT_SYS(0, 3, open("foo", 0));
ASSERT_SYS(EINVAL, -1, fadvise(3, 0, 0, 127));
ASSERT_SYS(0, 0, close(3));
}
TEST(posix_fadvise, testBadAdvice) {
ASSERT_SYS(0, 0, xbarf("foo", "hello", -1));
ASSERT_SYS(0, 3, open("foo", 0));
ASSERT_SYS(0, EINVAL, posix_fadvise(3, 0, 0, 127));
ASSERT_SYS(0, 0, close(3));
}
TEST(fadvise, testPastEof_isFine) {
ASSERT_SYS(0, 0, xbarf("foo", "hello", -1));
ASSERT_SYS(0, 3, open("foo", 0));
ASSERT_SYS(0, 0, fadvise(3, 100, 100, MADV_SEQUENTIAL));
ASSERT_SYS(0, 0, close(3));
}
TEST(fadvise, testNegativeLen_isInvalid) {
ASSERT_SYS(0, 0, xbarf("foo", "hello", -1));
ASSERT_SYS(0, 3, open("foo", 0));
ASSERT_SYS(EINVAL, -1, fadvise(3, 0, INT64_MIN, MADV_SEQUENTIAL));
ASSERT_SYS(0, 0, close(3));
}
TEST(posix_fadvise, testNegativeLen_isInvalid) {
ASSERT_SYS(0, 0, xbarf("foo", "hello", -1));
ASSERT_SYS(0, 3, open("foo", 0));
ASSERT_SYS(0, EINVAL, posix_fadvise(3, 0, INT64_MIN, POSIX_FADV_SEQUENTIAL));
ASSERT_SYS(0, 0, close(3));
}
TEST(fadvise, espipe) {
int fds[2];
ASSERT_SYS(0, 0, pipe(fds));
ASSERT_SYS(ESPIPE, -1, fadvise(3, 0, 0, MADV_SEQUENTIAL));
ASSERT_SYS(0, 0, close(4));
ASSERT_SYS(0, 0, close(3));
}
TEST(posix_fadvise, espipe) {
int fds[2];
ASSERT_SYS(0, 0, pipe(fds));
ASSERT_SYS(0, ESPIPE, posix_fadvise(3, 0, 0, POSIX_FADV_SEQUENTIAL));
ASSERT_SYS(0, 0, close(4));
ASSERT_SYS(0, 0, close(3));
}

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@ -0,0 +1,81 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi
Copyright 2022 Justine Alexandra Roberts Tunney
Permission to use, copy, modify, and/or distribute this software for
any purpose with or without fee is hereby granted, provided that the
above copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
*/
#include "libc/calls/calls.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/runtime/runtime.h"
#include "libc/sysv/consts/o.h"
#include "libc/testlib/testlib.h"
char testlib_enable_tmp_setup_teardown;
void SetUp(void) {
int e = errno;
if (splice(-1, 0, -1, 0, 0, 0) == -1 && errno == ENOSYS) {
exit(0);
}
errno = e;
}
TEST(splice, einval) {
ASSERT_SYS(0, 0, splice(0, 0, 1, 0, 0, -1));
}
TEST(splice, espipe) {
int64_t x;
int fds[2];
ASSERT_SYS(0, 0, pipe(fds));
ASSERT_SYS(0, 0, splice(0, 0, 4, &x, 0, 0));
ASSERT_SYS(0, 0, close(4));
ASSERT_SYS(0, 0, close(3));
}
TEST(splice, noOffsets_usesFilePointer) {
// this test fails on rhel5 and rhel7
int fds[2];
char buf[16] = {0};
ASSERT_SYS(0, 0, pipe(fds));
ASSERT_SYS(0, 5, open("foo", O_RDWR | O_CREAT | O_TRUNC, 0644));
ASSERT_SYS(0, 5, pwrite(5, "hello", 5, 0));
ASSERT_SYS(0, 5, splice(5, 0, 4, 0, 5, 0));
ASSERT_SYS(0, 5, splice(3, 0, 5, 0, 5, 0));
ASSERT_SYS(0, 10, pread(5, buf, sizeof(buf), 0));
ASSERT_STREQ("hellohello", buf);
ASSERT_SYS(0, 0, close(5));
ASSERT_SYS(0, 0, close(4));
ASSERT_SYS(0, 0, close(3));
}
TEST(splice, offsets_doesntChangePointerAndIsReadOnly) {
int fds[2];
int64_t x = 0;
char buf[16] = {0};
ASSERT_SYS(0, 0, pipe(fds));
ASSERT_SYS(0, 5, open("foo", O_RDWR | O_CREAT | O_TRUNC, 0644));
ASSERT_SYS(0, 5, pwrite(5, "hello", 5, 0));
ASSERT_SYS(0, 5, splice(5, &x, 4, 0, 5, 0));
ASSERT_EQ(5, x);
ASSERT_SYS(0, 5, splice(3, 0, 5, &x, 5, 0));
ASSERT_EQ(10, x);
ASSERT_SYS(0, 10, read(5, buf, sizeof(buf)));
ASSERT_STREQ("hellohello", buf);
ASSERT_SYS(0, 0, close(5));
ASSERT_SYS(0, 0, close(4));
ASSERT_SYS(0, 0, close(3));
}

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@ -17,6 +17,7 @@
PERFORMANCE OF THIS SOFTWARE.
*/
#include "libc/calls/calls.h"
#include "libc/mem/copyfd.internal.h"
#include "libc/calls/landlock.h"
#include "libc/calls/struct/dirent.h"
#include "libc/calls/struct/stat.h"
@ -25,7 +26,6 @@
#include "libc/errno.h"
#include "libc/intrin/kprintf.h"
#include "libc/mem/gc.h"
#include "libc/calls/copyfd.internal.h"
#include "libc/runtime/internal.h"
#include "libc/runtime/runtime.h"
#include "libc/sock/sock.h"

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@ -21,8 +21,8 @@
#include "libc/intrin/asan.internal.h"
#include "libc/log/libfatal.internal.h"
#include "libc/log/log.h"
#include "libc/mem/mem.h"
#include "libc/mem/gc.internal.h"
#include "libc/mem/mem.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
@ -33,6 +33,7 @@ TEST(asan, test) {
char *p;
if (!IsAsan()) return;
p = gc(malloc(3));
EXPECT_TRUE(__asan_is_valid(0, 0));
EXPECT_TRUE(__asan_is_valid(p, 3));
EXPECT_FALSE(__asan_is_valid(p, 4));
EXPECT_TRUE(__asan_is_valid(p + 1, 2));

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@ -18,6 +18,7 @@
*/
#include "libc/assert.h"
#include "libc/calls/calls.h"
#include "libc/mem/copyfd.internal.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/fmt/conv.h"
@ -26,7 +27,6 @@
#include "libc/log/libfatal.internal.h"
#include "libc/log/log.h"
#include "libc/mem/gc.h"
#include "libc/calls/copyfd.internal.h"
#include "libc/mem/mem.h"
#include "libc/runtime/internal.h"
#include "libc/runtime/runtime.h"

View file

@ -17,8 +17,13 @@
PERFORMANCE OF THIS SOFTWARE.
*/
#include "libc/calls/calls.h"
#include "libc/mem/mem.h"
#include "libc/calls/struct/sigaction.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/intrin/kprintf.h"
#include "libc/limits.h"
#include "libc/mem/gc.internal.h"
#include "libc/mem/mem.h"
#include "libc/runtime/runtime.h"
#include "libc/sock/sock.h"
#include "libc/sock/struct/sockaddr.h"
@ -26,20 +31,31 @@
#include "libc/sysv/consts/af.h"
#include "libc/sysv/consts/ipproto.h"
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/shut.h"
#include "libc/sysv/consts/sig.h"
#include "libc/sysv/consts/sock.h"
#include "libc/testlib/hyperion.h"
#include "libc/testlib/testlib.h"
#include "libc/x/x.h"
char testlib_enable_tmp_setup_teardown;
void SetUpOnce(void) {
if (IsNetbsd()) exit(0);
if (IsOpenbsd()) exit(0);
ASSERT_SYS(0, 0, pledge("stdio rpath wpath cpath proc inet", 0));
}
TEST(sendfile, test) {
int ws;
char *buf;
int64_t inoffset;
int64_t GetFileOffset(int fd) {
int64_t pos;
ASSERT_NE(-1, (pos = lseek(fd, 0, SEEK_CUR)));
return pos;
}
TEST(sendfile, testSeeking) {
char buf[1024];
int rc, ws, fds[2];
int64_t inoffset = 0;
uint32_t addrsize = sizeof(struct sockaddr_in);
struct sockaddr_in addr = {
.sin_family = AF_INET,
@ -53,24 +69,74 @@ TEST(sendfile, test) {
ASSERT_SYS(0, 0, getsockname(3, &addr, &addrsize));
ASSERT_SYS(0, 0, listen(3, 1));
if (!fork()) {
inoffset = 0;
ASSERT_SYS(0, 4, accept(3, &addr, &addrsize));
ASSERT_SYS(0, 5, open("hyperion.txt", O_RDONLY));
ASSERT_SYS(0, 512, sendfile(4, 5, &inoffset, 512));
EXPECT_EQ(512, inoffset);
ASSERT_SYS(0, 0, close(5));
ASSERT_SYS(0, 0, close(4));
ASSERT_SYS(0, 0, close(3));
ASSERT_SYS(0, 12, sendfile(4, 5, &inoffset, 12));
ASSERT_EQ(0, GetFileOffset(5));
ASSERT_SYS(0, 8, read(5, buf, 8));
ASSERT_EQ(0, memcmp(buf, "The fall", 8));
ASSERT_EQ(8, GetFileOffset(5));
ASSERT_SYS(EBADF, -1, sendfile(5, 5, &inoffset, -1));
ASSERT_EQ(-1, sendfile(5, 5, &inoffset, -1));
ASSERT_TRUE(errno == ESPIPE || errno == EBADF);
errno = 0;
ASSERT_SYS(0, 500, sendfile(4, 5, &inoffset, -1));
ASSERT_EQ(8, GetFileOffset(5));
ASSERT_EQ(512, inoffset);
inoffset = -1;
ASSERT_SYS(EINVAL, -1, sendfile(4, 5, &inoffset, -1));
_Exit(0);
}
buf = gc(malloc(512));
EXPECT_SYS(0, 0, close(3));
EXPECT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
EXPECT_SYS(0, 0, connect(3, &addr, sizeof(addr)));
EXPECT_SYS(0, 512, read(3, buf, 512));
EXPECT_EQ(0, memcmp(buf, kHyperion, 512));
EXPECT_SYS(0, 0, close(3));
EXPECT_NE(-1, wait(&ws));
ASSERT_SYS(0, 0, close(3));
ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
ASSERT_SYS(0, 0, connect(3, &addr, sizeof(addr)));
ASSERT_SYS(0, 12, read(3, buf, 12)); // needed due to windows
ASSERT_SYS(0, 500, read(3, buf + 12, 700));
ASSERT_EQ(0, memcmp(buf, kHyperion, 512));
ASSERT_SYS(0, 0, close(3));
ASSERT_NE(-1, wait(&ws));
ASSERT_TRUE(WIFEXITED(ws));
ASSERT_EQ(0, WEXITSTATUS(ws));
}
TEST(sendfile, testPositioning) {
int ws, fds[2];
char buf[1024];
uint32_t addrsize = sizeof(struct sockaddr_in);
struct sockaddr_in addr = {
.sin_family = AF_INET,
.sin_addr.s_addr = htonl(0x7f000001),
};
ASSERT_SYS(0, 3, creat("hyperion.txt", 0644));
ASSERT_SYS(0, 512, write(3, kHyperion, 512));
ASSERT_SYS(0, 0, close(3));
ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
ASSERT_SYS(0, 0, bind(3, &addr, sizeof(addr)));
ASSERT_SYS(0, 0, getsockname(3, &addr, &addrsize));
ASSERT_SYS(0, 0, listen(3, 1));
if (!fork()) {
signal(SIGPIPE, SIG_IGN);
ASSERT_SYS(0, 4, accept(3, &addr, &addrsize));
ASSERT_SYS(0, 5, open("hyperion.txt", O_RDONLY));
ASSERT_SYS(0, 6, sendfile(4, 5, 0, 6));
ASSERT_EQ(6, GetFileOffset(5));
ASSERT_SYS(0, 6, sendfile(4, 5, 0, 6));
ASSERT_SYS(0, 0, shutdown(4, SHUT_WR));
ASSERT_EQ(-1, sendfile(4, 5, 0, 6));
ASSERT_TRUE(errno == EINVAL || errno == EPIPE);
errno = 0;
ASSERT_EQ(12, GetFileOffset(5));
_Exit(0);
}
ASSERT_SYS(0, 0, close(3));
ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
ASSERT_SYS(0, 0, connect(3, &addr, sizeof(addr)));
ASSERT_SYS(0, 6, read(3, buf, 6));
ASSERT_SYS(0, 6, read(3, buf + 6, 6));
ASSERT_SYS(0, 0, read(3, buf, 12));
ASSERT_EQ(0, memcmp(buf, kHyperion, 12));
ASSERT_SYS(0, 0, close(3));
ASSERT_NE(-1, wait(&ws));
ASSERT_TRUE(WIFEXITED(ws));
ASSERT_EQ(0, WEXITSTATUS(ws));
}