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Fix some more issues

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- ARM Neon headers are now exported in libc/isystem/

- stat() and access() now do a better job reporting which files are
  executable which ones aren't. They do this by reading the first two
  bytes in a file to see if it's `MZ` or `#!`.
This commit is contained in:
Justine Tunney 2023-09-21 11:41:42 -07:00
parent 22cf6e11eb
commit 4f5d5a6813
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GPG key ID: BE714B4575D6E328
17 changed files with 144 additions and 49 deletions
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28
libc/calls/winexec.c Normal file
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/*-*- 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 2023 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/internal.h"
#include "libc/nt/runtime.h"
textwindows int IsWindowsExecutable(int64_t handle) {
char buf[2];
uint32_t got;
return ReadFile(handle, buf, 2, &got, 0) && got == 2 &&
((buf[0] == 'M' && buf[1] == 'Z') || //
(buf[0] == '#' && buf[1] == '!'));
}