mirror of
https://github.com/jart/cosmopolitan.git
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103 lines
3.8 KiB
C
103 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 et 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/calls/calls.h"
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#include "libc/calls/struct/sigset.internal.h"
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#include "libc/calls/syscall-nt.internal.h"
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#include "libc/errno.h"
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#include "libc/intrin/dll.h"
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#include "libc/intrin/strace.h"
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#include "libc/nt/console.h"
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#include "libc/nt/enum/ctrlevent.h"
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#include "libc/nt/enum/processaccess.h"
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#include "libc/nt/errors.h"
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#include "libc/nt/process.h"
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#include "libc/nt/runtime.h"
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#include "libc/proc/proc.internal.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/sysv/errfuns.h"
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#ifdef __x86_64__
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textwindows int sys_kill_nt(int pid, int sig) {
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// validate api usage
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if (!(0 <= sig && sig <= 64)) {
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return einval();
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}
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// XXX: NT doesn't really have process groups. For instance the
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// CreateProcess() flag for starting a process group actually
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// just does an "ignore ctrl-c" internally.
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if (pid < -1) {
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pid = -pid;
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}
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// no support for kill all yet
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if (pid == -1) {
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return einval();
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}
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// just call raise() if we're targeting self
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if (pid <= 0 || pid == getpid()) {
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if (sig) {
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if (pid <= 0) {
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struct Dll *e;
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BLOCK_SIGNALS;
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__proc_lock();
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for (e = dll_first(__proc.list); e; e = dll_next(__proc.list, e)) {
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TerminateProcess(PROC_CONTAINER(e)->handle, sig);
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}
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__proc_unlock();
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ALLOW_SIGNALS;
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}
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return raise(sig);
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} else {
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return 0; // ability check passes
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}
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}
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// find existing handle we own for process
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int64_t handle, closeme = 0;
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if (!(handle = __proc_handle(pid))) {
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if ((handle = OpenProcess(kNtProcessTerminate, false, pid))) {
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closeme = handle;
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} else {
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goto OnError;
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}
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}
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// perform actual kill
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// process will report WIFSIGNALED with WTERMSIG(sig)
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bool32 ok = TerminateProcess(handle, sig);
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if (closeme)
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CloseHandle(closeme);
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if (ok)
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return 0;
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// handle error
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OnError:
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switch (GetLastError()) {
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case kNtErrorInvalidHandle:
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case kNtErrorInvalidParameter:
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return esrch();
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default:
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return eperm();
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}
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}
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#endif /* __x86_64__ */
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