mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
f0600a898c
- Remove XD bit in page tables
- Fix cylinder+head+sector arithmetic
- Implement fstat() for serial file descriptors on metal
Here's how to boot an Actually Portable Executable in QEMU:
make -j12 o//tool/viz/deathstar.com
qemu-system-x86_64 -serial stdio -fda o//tool/viz/deathstar.com
Here's a screenshot of DEATHSTAR.COM booted in QEMU:
https://justine.lol/cosmopolitan/cosmo-metal-qemu.png
Thus metal support is in much better shape now, but still incomplete.
Only a few system calls have been polyfilled. To figure out which ones
your program needs, simply boot it in the blinkenlights emulator with a
breakpoint, and press CTRL-C to continue to the system call breakpoint.
If it doesn't break then you should be good. (Note: to emulate normally
you can press 'c' and use CTRL-T and ALT-T to tune the speed.)
m=tiny
make -j12 SILENT=0 MODE=$m \
o/$m/tool/build/blinkenlights.com \
o/$m/tool/viz/deathstar.com
o/$m/tool/build/blinkenlights.com \
-r -t -b systemfive.linux \
o/$m/tool/viz/deathstar.com
Thank @Theldus for the bug report that made this change possible.
Fixes #20 which explains this change further.
83 lines
4.3 KiB
C
83 lines
4.3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 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/bits/safemacros.h"
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#include "libc/calls/internal.h"
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#include "libc/calls/struct/stat.h"
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#include "libc/fmt/conv.h"
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#include "libc/nt/enum/fileflagandattributes.h"
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#include "libc/nt/enum/fileinfobyhandleclass.h"
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#include "libc/nt/enum/filetype.h"
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#include "libc/nt/files.h"
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#include "libc/nt/runtime.h"
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#include "libc/nt/struct/byhandlefileinformation.h"
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#include "libc/nt/struct/filecompressioninfo.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/s.h"
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textwindows int fstat$nt(int64_t handle, struct stat *st) {
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int filetype;
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uint64_t actualsize;
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struct NtFileCompressionInfo fci;
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struct NtByHandleFileInformation wst;
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if ((filetype = GetFileType(handle))) {
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memset(st, 0, sizeof(*st));
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switch (filetype) {
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case kNtFileTypeChar:
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st->st_mode = S_IFCHR | 0600;
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break;
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case kNtFileTypePipe:
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st->st_mode = S_IFIFO | 0600;
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break;
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case kNtFileTypeDisk:
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if (GetFileInformationByHandle(handle, &wst)) {
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dprintf(1, "handle = %ld\n", handle);
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st->st_mode =
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(S_IRUSR | S_IXUSR |
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(!(wst.dwFileAttributes & kNtFileAttributeReadonly) ? S_IWUSR
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: 0) |
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((wst.dwFileAttributes & kNtFileAttributeNormal) ? S_IFREG : 0) |
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((wst.dwFileAttributes & kNtFileFlagOpenReparsePoint) ? S_IFLNK
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: 0) |
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((wst.dwFileAttributes & kNtFileAttributeDirectory) ? S_IFDIR
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: 0));
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st->st_atim = FileTimeToTimeSpec(wst.ftLastAccessFileTime);
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st->st_mtim = FileTimeToTimeSpec(wst.ftLastWriteFileTime);
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st->st_ctim = FileTimeToTimeSpec(wst.ftCreationFileTime);
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st->st_size = (uint64_t)wst.nFileSizeHigh << 32 | wst.nFileSizeLow;
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st->st_blksize = PAGESIZE;
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st->st_dev = wst.dwVolumeSerialNumber;
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st->st_ino = (uint64_t)wst.nFileIndexHigh << 32 | wst.nFileIndexLow;
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st->st_nlink = wst.nNumberOfLinks;
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if (GetFileInformationByHandleEx(handle, kNtFileCompressionInfo, &fci,
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sizeof(fci))) {
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actualsize = fci.CompressedFileSize;
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} else {
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actualsize = st->st_size;
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}
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st->st_blocks = roundup(actualsize, PAGESIZE) / 512;
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}
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break;
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default:
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break;
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}
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return 0;
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} else {
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return __winerr();
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}
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}
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