mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-05-23 22:02:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Fix fork() on Windows after chdir()

Browse source
This commit is contained in:
Justine Tunney 2021-01-29 23:19:29 -08:00
parent 21e1023d28
commit b8d26e2418
7 changed files with 93 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

55
test/libc/calls/lseek_test.c Normal file
View file

@ -0,0 +1,55 @@
/*-*- 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 2021 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/internal.h"
#include "libc/fmt/fmt.h"
#include "libc/log/check.h"
#include "libc/runtime/runtime.h"
#include "libc/sysv/consts/o.h"
#include "libc/testlib/testlib.h"
#include "libc/x/x.h"
char testdir[PATH_MAX];
void SetUp(void) {
sprintf(testdir, "o/tmp/%s.%d", program_invocation_short_name, getpid());
makedirs(testdir, 0755);
CHECK_NE(-1, chdir(testdir));
}
void TearDown(void) {
CHECK_NE(-1, chdir("../../.."));
CHECK_NE(-1, rmrf(testdir));
}
TEST(lseek, wat) {
int fd, pid;
char buf[8] = {0};
ASSERT_NE(-1, (fd = open("wut", O_RDWR | O_CREAT, 0644)));
ASSERT_EQ(3, write(fd, "wut", 3));
ASSERT_NE(-1, lseek(fd, 0, SEEK_SET));
if (!(pid = fork())) {
lseek(fd, 1, SEEK_SET);
_exit(0);
}
EXPECT_NE(-1, waitpid(pid, 0, 0));
EXPECT_EQ(1, read(fd, buf, 1));
EXPECT_EQ('u', buf[0]); /* wat?! */
EXPECT_NE(-1, close(fd));
}