blob: 244519e889bd05cd6453fbc2fd0056b5cdc57099 [file] [log] [blame] [raw]
/* A part of the Native C Library for Windows NT
Copyright 2007-2015 PC GO Ld.
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; either version 2 of the License, or (at your option) any later version.
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.
*/
#include <sys/stat.h>
#include <windows.h>
#include <nt.h>
#include <errno.h>
#include <string.h>
#include <pathname.h>
#include <ntstatus.h>
//#include <stdio.h>
int fchmod(int fd, mode_t mode) {
IO_STATUS_BLOCK io_status;
FILE_BASIC_INFORMATION fbi;
long int status = NtQueryInformationFile((void *)fd, &io_status, &fbi, sizeof fbi, FileBasicInformation);
//printf("nativelibc debug: fchmod: status1 = 0x%lx\n", status);
if(status < 0) {
__set_errno_from_ntstatus(status);
return -1;
}
if(mode & S_IWRITE) fbi.FileAttributes &= ~FILE_ATTRIBUTE_READONLY;
else fbi.FileAttributes |= FILE_ATTRIBUTE_READONLY;
status = NtSetInformationFile((void *)fd, &io_status, &fbi, sizeof fbi, FileBasicInformation);
//printf("nativelibc debug: fchmod: status1 = 0x%lx\n", status);
return __set_errno_from_ntstatus(status) ? -1 : 0;
}
int chmod(const char *path, mode_t mode) {
if(!path) {
errno = EFAULT;
return -1;
}
// We can't use open bacause we need to allow chmod a directory
UNICODE_STRING ntpathname;
if(!RtlCreateUnicodeStringFromAsciiz(&ntpathname, path)) {
errno = ENOMEM;
return -1;
}
PATHNAME_UNIX2NT_UTF16_STRUCT(ntpathname);
OBJECT_ATTRIBUTES object_attrib = { sizeof(OBJECT_ATTRIBUTES), NULL, &ntpathname, 0, NULL, NULL };
void *fh;
IO_STATUS_BLOCK io_status;
unsigned long int access_mask = FILE_READ_EA | FILE_READ_ATTRIBUTES | FILE_WRITE_EA | FILE_WRITE_ATTRIBUTES | SYNCHRONIZE;
unsigned long int file_share = FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE;
unsigned long int options = FILE_SYNCHRONOUS_IO_NONALERT | FILE_OPEN_FOR_BACKUP_INTENT;
long int status = NtOpenFile(&fh, access_mask, &object_attrib, &io_status, file_share, options);
//printf("nativelibc debug: chmod: status = 0x%lx\n", status);
RtlFreeUnicodeString(&ntpathname);
if(status == STATUS_OBJECT_TYPE_MISMATCH) {
errno = EPERM;
return -1;
}
if(status < 0) {
__set_errno_from_ntstatus(status);
return -1;
}
return fchmod((int)fh, mode);
}