72 lines
3.9 KiB
C
72 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 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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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/bits/safemacros.internal.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/conv/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 (GetFileInformationByHandle(handle, &wst)) {
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memset(st, 0, sizeof(*st));
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filetype = GetFileType(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 : 0) |
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((wst.dwFileAttributes & kNtFileAttributeNormal) ? S_IFREG : 0) |
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((wst.dwFileAttributes & kNtFileFlagOpenReparsePoint) ? S_IFLNK : 0) |
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((wst.dwFileAttributes & kNtFileAttributeDirectory)
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? S_IFDIR
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: (((filetype == kNtFileTypeDisk) ? S_IFBLK : 0) |
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((filetype == kNtFileTypeChar) ? S_IFCHR : 0) |
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((filetype == kNtFileTypePipe) ? S_IFIFO : 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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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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