cosmopolitan/libc/calls/utimensat-nt.c

84 lines
3.5 KiB
C

/*-*- 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 2020 Justine Alexandra Roberts Tunney │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/internal.h"
#include "libc/conv/conv.h"
#include "libc/nt/createfile.h"
#include "libc/nt/enum/creationdisposition.h"
#include "libc/nt/files.h"
#include "libc/nt/runtime.h"
#include "libc/nt/synchronization.h"
#include "libc/sysv/consts/at.h"
#include "libc/sysv/consts/utime.h"
#include "libc/sysv/errfuns.h"
#include "libc/time/time.h"
textwindows int utimensat$nt(int dirfd, const char *path,
const struct timespec ts[2], int flags) {
int i, rc;
int64_t fh;
bool closeme;
uint16_t path16[PATH_MAX];
struct NtFileTime ft[2], *ftp[2];
if (flags) return einval();
if (path) {
if (dirfd == AT_FDCWD) {
if (mkntpath(path, path16) == -1) return -1;
if ((fh = CreateFile(path16, kNtFileWriteAttributes, kNtFileShareRead,
NULL, kNtOpenExisting, kNtFileAttributeNormal, 0)) !=
-1) {
closeme = true;
} else {
return winerr();
}
} else {
return einval();
}
} else {
return ebadf();
}
if (!ts || ts[0].tv_nsec == UTIME_NOW || ts[1].tv_nsec == UTIME_NOW) {
GetSystemTimeAsFileTime(ft);
}
if (ts) {
for (i = 0; i < 2; ++i) {
if (ts[i].tv_nsec == UTIME_NOW) {
ftp[i] = ft;
} else if (ts[i].tv_nsec == UTIME_OMIT) {
ftp[i] = NULL;
} else {
ft[i] = TimeSpecToFileTime(ts[i]);
ftp[i] = &ft[i];
}
}
} else {
ftp[0] = ft;
ftp[1] = ft;
}
if (SetFileTime(fh, NULL, ftp[0], ftp[1])) {
rc = 0;
} else {
rc = winerr();
}
if (closeme) {
CloseHandle(fh);
}
return rc;
}