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Work towards improving signals and processes

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This commit is contained in:
Justine Tunney
2021-01-27 19:34:02 -08:00
parent de703b182c
commit d7ac16a9ed
96 changed files with 1474 additions and 427 deletions
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6
test/libc/calls/hefty/vfork_test.c
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@ -33,14 +33,18 @@ TEST(vfork, test) {
ASSERT_NE(-1, lseek(fd, 0, SEEK_SET));
if (!vfork()) {
EXPECT_EQ(5, pread(fd, buf, 5, 0));
/*
* TODO(jart): DOES PREAD IN CHILD REALLY CHANGE PARENT HANDLE POSITION?
*/
ASSERT_NE(-1, lseek(fd, 0, SEEK_SET));
EXPECT_STREQ("hello", buf);
EXPECT_NE(-1, close(fd));
_exit(0);
}
EXPECT_EQ(0, __vforked);
EXPECT_NE(-1, wait(0));
EXPECT_EQ(5, read(fd, buf, 5));
EXPECT_STREQ("hello", buf);
EXPECT_NE(-1, close(fd));
EXPECT_NE(-1, wait(0));
unlink(PATH);
}

63
test/libc/calls/sigaction_test.c Normal file
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@ -0,0 +1,63 @@
/*-*- 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/sigbits.h"
#include "libc/calls/struct/sigaction.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/runtime/runtime.h"
#include "libc/sysv/consts/sa.h"
#include "libc/sysv/consts/sig.h"
#include "libc/testlib/testlib.h"
bool gotsigint;
void OnSigInt(int sig) {
gotsigint = true;
}
TEST(sigaction, test) {
/* TODO(jart): Why does RHEL5 behave differently? */
/* TODO(jart): Windows needs huge signal overhaul */
if (IsWindows()) return;
int pid, status;
sigset_t block, ignore, oldmask;
struct sigaction saint = {.sa_handler = OnSigInt};
sigemptyset(&block);
sigaddset(&block, SIGINT);
EXPECT_NE(-1, sigprocmask(SIG_BLOCK, &block, &oldmask));
sigfillset(&ignore);
sigdelset(&ignore, SIGINT);
EXPECT_NE(-1, sigaction(SIGINT, &saint, NULL));
ASSERT_NE(-1, (pid = fork()));
if (!pid) {
EXPECT_NE(-1, kill(getppid(), SIGINT));
EXPECT_EQ(-1, sigsuspend(&ignore));
EXPECT_EQ(EINTR, errno);
EXPECT_TRUE(gotsigint);
_exit(0);
}
EXPECT_EQ(-1, sigsuspend(&ignore));
EXPECT_NE(-1, kill(pid, SIGINT));
EXPECT_NE(-1, waitpid(pid, &status, 0));
EXPECT_EQ(1, WIFEXITED(status));
EXPECT_EQ(0, WEXITSTATUS(status));
EXPECT_EQ(0, WTERMSIG(status));
EXPECT_NE(-1, sigprocmask(SIG_BLOCK, &oldmask, NULL));
}

34
test/libc/stdio/popen_test.c Normal file
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@ -0,0 +1,34 @@
/*-*- 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/log/check.h"
#include "libc/stdio/stdio.h"
#include "libc/testlib/testlib.h"
TEST(popen, test) {
int ws;
FILE *f;
f = popen("echo hi", "r");
ASSERT_NE(NULL, f);
EXPECT_EQ('h', fgetc(f));
EXPECT_EQ('i', fgetc(f));
ws = pclose(f);
EXPECT_NE(-1, ws);
EXPECT_TRUE(WIFEXITED(ws));
EXPECT_EQ(0, WEXITSTATUS(ws));
}