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Spoof PID across execve() on Windows

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It's now possible with cosmo and redbean, to deliver a signal to a child
process after it has called execve(). However the executed program needs
to be compiled using cosmocc. The cosmo runtime WinMain() implementation
now intercepts a _COSMO_PID environment variable that's set by execve().
It ensures the child process will use the same C:\ProgramData\cosmo\sigs
file, which is where kill() will place the delivered signal. We are able
to do this on Windows even better than NetBSD, which has a bug with this

Fixes #1334
This commit is contained in:
Justine Tunney 2024-12-14 12:23:02 -08:00
parent 9cc1bd04b2
commit 26c051c297
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GPG key ID: BE714B4575D6E328
8 changed files with 187 additions and 21 deletions
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libc/intrin/terminatethisprocess.c
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@ -18,7 +18,6 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/atomic.h"
#include "libc/calls/sig.internal.h"
#include "libc/intrin/kprintf.h"
#include "libc/limits.h"
#include "libc/nt/files.h"
#include "libc/nt/memory.h"