mirror of
https://github.com/jart/cosmopolitan.git
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122 lines
4.6 KiB
C
122 lines
4.6 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 2021 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/cp.internal.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/calls/struct/iovec.internal.h"
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#include "libc/calls/struct/rlimit.h"
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#include "libc/calls/struct/sigaction.h"
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#include "libc/calls/struct/sigset.h"
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/sock/internal.h"
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#include "libc/sysv/consts/nr.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/sysv/consts/rlimit.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/testlib/ezbench.h"
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#include "libc/testlib/subprocess.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(write, notOpen_ebadf) {
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ASSERT_SYS(EBADF, -1, write(-1, 0, 0));
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ASSERT_SYS(EBADF, -1, write(+3, 0, 0));
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}
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TEST(write, readOnlyFd_ebadf) {
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ASSERT_SYS(0, 0, touch("foo", 0644));
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ASSERT_SYS(0, 3, open("foo", O_RDONLY));
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ASSERT_SYS(EBADF, -1, write(3, "x", 1));
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ASSERT_SYS(0, 0, close(3));
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}
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TEST(write, badMemory_efault) {
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ASSERT_SYS(EFAULT, -1, write(1, 0, 1));
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if (!IsAsan()) return;
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ASSERT_SYS(EFAULT, -1, write(1, (void *)1, 1));
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}
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TEST(write, brokenPipe_raisesSigpipe) {
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int fds[2];
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SPAWN(fork);
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signal(SIGPIPE, SIG_DFL);
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ASSERT_SYS(0, 0, pipe(fds));
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ASSERT_SYS(0, 1, write(4, "x", 1));
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ASSERT_SYS(0, 0, close(3));
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write(4, "x", 1);
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TERMS(SIGPIPE);
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}
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TEST(write, brokenPipe_sigpipeIgnored_returnsEpipe) {
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int fds[2];
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SPAWN(fork);
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signal(SIGPIPE, SIG_IGN);
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ASSERT_SYS(0, 0, pipe(fds));
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ASSERT_SYS(0, 1, write(4, "x", 1));
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ASSERT_SYS(0, 0, close(3));
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ASSERT_SYS(EPIPE, -1, write(4, "x", 1));
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ASSERT_SYS(0, 0, close(4));
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EXITS(0);
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}
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TEST(write, brokenPipe_sigpipeBlocked_returnsEpipe) {
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int fds[2];
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sigset_t mask;
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SPAWN(fork);
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signal(SIGPIPE, SIG_DFL);
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sigemptyset(&mask);
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sigaddset(&mask, SIGPIPE);
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sigprocmask(SIG_BLOCK, &mask, 0);
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ASSERT_SYS(0, 0, pipe(fds));
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ASSERT_SYS(0, 0, close(3));
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ASSERT_SYS(EPIPE, -1, write(4, "x", 1));
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ASSERT_SYS(0, 0, close(4));
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EXITS(0);
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}
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TEST(write, rlimitFsizeExceeded_raisesEfbig) {
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if (IsWindows()) return; // not supported
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struct rlimit rl = {1, 10};
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SPAWN(fork);
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signal(SIGXFSZ, SIG_IGN);
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ASSERT_SYS(0, 0, setrlimit(RLIMIT_FSIZE, &rl));
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ASSERT_SYS(0, 3, creat("foo", 0644));
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ASSERT_SYS(0, 1, write(3, "x", 1));
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ASSERT_SYS(EFBIG, -1, write(3, "x", 1));
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ASSERT_SYS(0, 0, close(3));
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EXITS(0);
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}
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BENCH(write, bench) {
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ASSERT_SYS(0, 3, open("/dev/null", O_WRONLY));
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EZBENCH2("write", donothing, write(3, "hello", 5));
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EZBENCH2("writev", donothing, writev(3, &(struct iovec){"hello", 5}, 1));
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BEGIN_CANCELLATION_POINT;
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EZBENCH2("sys_write", donothing, sys_write(3, "hello", 5));
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EZBENCH2("sys_writev", donothing,
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sys_writev(3, &(struct iovec){"hello", 5}, 1));
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END_CANCELLATION_POINT;
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ASSERT_SYS(0, 0, close(3));
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}
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