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Make important improvements

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- Fix preadv() and pwritev() for old distros
- Introduce _npassert() and _unassert() macros
- Prove that file locks work properly on Windows
- Support fcntl(F_DUPFD_CLOEXEC) on more systems
This commit is contained in:
Justine Tunney 2022-09-14 21:29:50 -07:00
parent 1ad2f530f9
commit 3f49889841
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GPG key ID: BE714B4575D6E328
130 changed files with 1225 additions and 431 deletions
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test/libc/calls/preadv_test.c Normal file
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/*-*- 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/assert.h"
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/struct/iovec.h"
#include "libc/errno.h"
#include "libc/nt/files.h"
#include "libc/sysv/consts/o.h"
#include "libc/testlib/testlib.h"
char testlib_enable_tmp_setup_teardown;
TEST(preadv, ebadf) {
EXPECT_SYS(EBADF, -1, preadv(-1, 0, 0, 0));
EXPECT_SYS(EBADF, -1, pwritev(-1, 0, 0, 0));
}
TEST(preadv, testOneIovecWorks_itDelegatesToPread) {
char b1[2] = "hi";
struct iovec v[1] = {{b1, 2}};
ASSERT_SYS(0, 3, open("foo", O_RDWR | O_CREAT | O_TRUNC, 0644));
EXPECT_SYS(0, 2, pwritev(3, v, 1, 0));
b1[0] = 0;
b1[1] = 0;
EXPECT_SYS(0, 0, preadv(3, 0, 0, 0));
EXPECT_SYS(0, 0, pwritev(3, 0, 0, 0));
EXPECT_SYS(0, 2, preadv(3, v, 1, 0));
ASSERT_EQ('h', b1[0]);
ASSERT_EQ('i', b1[1]);
b1[0] = 0;
b1[1] = 0x55;
EXPECT_SYS(0, 1, preadv(3, v, 1, 1));
ASSERT_EQ('i', b1[0]);
ASSERT_EQ(0x55, b1[1]);
ASSERT_SYS(0, 0, close(3));
}
TEST(preadv, testTwoIovecWorks_itMustDoItsThing) {
char b1[1] = "h";
char b2[1] = "i";
struct iovec v[2] = {{b1, 1}, {b2, 1}};
ASSERT_SYS(0, 3, open("foo", O_RDWR | O_CREAT | O_TRUNC, 0644));
EXPECT_SYS(0, 2, pwritev(3, v, 2, 0));
b1[0] = 0;
b2[0] = 0;
EXPECT_SYS(0, 2, preadv(3, v, 2, 0));
ASSERT_EQ('h', b1[0]);
ASSERT_EQ('i', b2[0]);
b1[0] = 0;
b2[0] = 0x55;
EXPECT_SYS(0, 1, preadv(3, v, 2, 1));
ASSERT_EQ('i', b1[0]);
ASSERT_EQ(0x55, b2[0]);
ASSERT_SYS(0, 0, close(3));
}
TEST(pwritev, writePastEof_zeroExtendsFile_alsoDoesntChangeFilePointer) {
char b[6] = {0x55, 0x55, 0x55, 0x55, 0x55, 0x55};
char s[2] = "hi";
struct iovec v[1] = {{s, 2}};
ASSERT_SYS(0, 3, open("foo", O_RDWR | O_CREAT | O_TRUNC, 0644));
ASSERT_SYS(EINVAL, -1, pwritev(3, v, 1, -999));
ASSERT_SYS(0, 2, pwritev(3, v, 1, 0));
ASSERT_SYS(0, 2, pwritev(3, v, 1, 4));
ASSERT_SYS(0, 2, preadv(3, v, 1, 0));
ASSERT_SYS(0, 6, read(3, b, 6));
ASSERT_EQ('h', b[0]);
ASSERT_EQ('i', b[1]);
ASSERT_EQ(0, b[2]);
ASSERT_EQ(0, b[3]);
ASSERT_EQ('h', b[4]);
ASSERT_EQ('i', b[5]);
ASSERT_SYS(0, 0, close(3));
}