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e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
88 lines
3.9 KiB
C
88 lines
3.9 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et 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/calls/calls.h"
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#include "libc/calls/struct/sigset.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/intrin/kprintf.h"
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#include "libc/runtime/runtime.h"
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#include "libc/sysv/consts/prio.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/testlib/subprocess.h"
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#include "libc/testlib/testlib.h"
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void SetUp(void) {
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if (getpriority(PRIO_PROCESS, getpid()) != 0) {
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kprintf("getpriority_test.com must be launched at priority zero\n");
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exit(0);
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}
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}
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TEST(getpriority, badWhich_einval) {
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ASSERT_SYS(EINVAL, -1, getpriority(-1, 0));
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ASSERT_SYS(EINVAL, -1, setpriority(-1, 0, 0));
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}
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TEST(getpriority, lowerPriorityOfSelf) {
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SPAWN(fork);
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ASSERT_SYS(0, 0, getpriority(PRIO_PROCESS, 0));
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ASSERT_SYS(0, 0, getpriority(PRIO_PROCESS, getpid()));
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ASSERT_SYS(0, 0, setpriority(PRIO_PROCESS, getpid(), 5));
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ASSERT_SYS(0, 5, getpriority(PRIO_PROCESS, getpid()));
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ASSERT_SYS(0, 5, getpriority(PRIO_PROCESS, 0));
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EXITS(0);
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}
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TEST(getpriority, higherPriorityOfSelf) {
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if (IsWindows() || getuid() == 0) {
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SPAWN(fork);
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ASSERT_SYS(0, 0, setpriority(PRIO_PROCESS, 0, -5));
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ASSERT_SYS(0, -5, getpriority(PRIO_PROCESS, 0));
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ASSERT_SYS(0, 0, setpriority(PRIO_PROCESS, 0, 0));
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EXITS(0);
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}
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}
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TEST(getpriority, lowerAndRaiseItAgain_notAllowed) {
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if (1) return; // this behavior seems limited to modern linux
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SPAWN(fork);
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ASSERT_SYS(0, 0, setpriority(PRIO_PROCESS, 0, 5));
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ASSERT_SYS(EACCES, -1, setpriority(PRIO_PROCESS, 0, 4));
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EXITS(0);
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}
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TEST(getpriority, lowerPriorityOfSubprocess) {
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int pid, ws;
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sigset_t ss, oldss;
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sigemptyset(&ss);
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sigaddset(&ss, SIGUSR1);
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ASSERT_SYS(0, 0, sigprocmask(SIG_BLOCK, &ss, &oldss));
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ASSERT_NE(-1, (pid = fork()));
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if (!pid) {
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sigemptyset(&ss);
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ASSERT_SYS(EINTR, -1, sigsuspend(&ss));
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_Exit(0);
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}
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ASSERT_SYS(0, 0, getpriority(PRIO_PROCESS, pid));
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ASSERT_SYS(0, 0, setpriority(PRIO_PROCESS, pid, 5));
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ASSERT_SYS(0, 5, getpriority(PRIO_PROCESS, pid));
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ASSERT_SYS(0, 0, kill(pid, SIGUSR1));
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ASSERT_SYS(0, pid, wait(&ws));
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ASSERT_SYS(0, 0, sigprocmask(SIG_SETMASK, &oldss, 0));
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}
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