mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 03:53:33 +00:00
3f49889841
- 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
91 lines
3.8 KiB
C
91 lines
3.8 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/assert.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/internal.h"
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#include "libc/calls/struct/iovec.h"
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#include "libc/errno.h"
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#include "libc/nt/files.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/testlib/testlib.h"
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char testlib_enable_tmp_setup_teardown;
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TEST(preadv, ebadf) {
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EXPECT_SYS(EBADF, -1, preadv(-1, 0, 0, 0));
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EXPECT_SYS(EBADF, -1, pwritev(-1, 0, 0, 0));
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}
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TEST(preadv, testOneIovecWorks_itDelegatesToPread) {
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char b1[2] = "hi";
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struct iovec v[1] = {{b1, 2}};
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ASSERT_SYS(0, 3, open("foo", O_RDWR | O_CREAT | O_TRUNC, 0644));
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EXPECT_SYS(0, 2, pwritev(3, v, 1, 0));
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b1[0] = 0;
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b1[1] = 0;
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EXPECT_SYS(0, 0, preadv(3, 0, 0, 0));
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EXPECT_SYS(0, 0, pwritev(3, 0, 0, 0));
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EXPECT_SYS(0, 2, preadv(3, v, 1, 0));
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ASSERT_EQ('h', b1[0]);
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ASSERT_EQ('i', b1[1]);
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b1[0] = 0;
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b1[1] = 0x55;
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EXPECT_SYS(0, 1, preadv(3, v, 1, 1));
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ASSERT_EQ('i', b1[0]);
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ASSERT_EQ(0x55, b1[1]);
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ASSERT_SYS(0, 0, close(3));
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}
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TEST(preadv, testTwoIovecWorks_itMustDoItsThing) {
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char b1[1] = "h";
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char b2[1] = "i";
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struct iovec v[2] = {{b1, 1}, {b2, 1}};
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ASSERT_SYS(0, 3, open("foo", O_RDWR | O_CREAT | O_TRUNC, 0644));
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EXPECT_SYS(0, 2, pwritev(3, v, 2, 0));
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b1[0] = 0;
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b2[0] = 0;
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EXPECT_SYS(0, 2, preadv(3, v, 2, 0));
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ASSERT_EQ('h', b1[0]);
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ASSERT_EQ('i', b2[0]);
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b1[0] = 0;
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b2[0] = 0x55;
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EXPECT_SYS(0, 1, preadv(3, v, 2, 1));
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ASSERT_EQ('i', b1[0]);
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ASSERT_EQ(0x55, b2[0]);
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ASSERT_SYS(0, 0, close(3));
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}
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TEST(pwritev, writePastEof_zeroExtendsFile_alsoDoesntChangeFilePointer) {
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char b[6] = {0x55, 0x55, 0x55, 0x55, 0x55, 0x55};
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char s[2] = "hi";
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struct iovec v[1] = {{s, 2}};
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ASSERT_SYS(0, 3, open("foo", O_RDWR | O_CREAT | O_TRUNC, 0644));
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ASSERT_SYS(EINVAL, -1, pwritev(3, v, 1, -999));
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ASSERT_SYS(0, 2, pwritev(3, v, 1, 0));
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ASSERT_SYS(0, 2, pwritev(3, v, 1, 4));
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ASSERT_SYS(0, 2, preadv(3, v, 1, 0));
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ASSERT_SYS(0, 6, read(3, b, 6));
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ASSERT_EQ('h', b[0]);
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ASSERT_EQ('i', b[1]);
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ASSERT_EQ(0, b[2]);
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ASSERT_EQ(0, b[3]);
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ASSERT_EQ('h', b[4]);
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ASSERT_EQ('i', b[5]);
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ASSERT_SYS(0, 0, close(3));
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}
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