diff options
Diffstat (limited to 'winsup/cygwin/ntea.cc')
| -rw-r--r-- | winsup/cygwin/ntea.cc | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/winsup/cygwin/ntea.cc b/winsup/cygwin/ntea.cc deleted file mode 100644 index 72463feb0..000000000 --- a/winsup/cygwin/ntea.cc +++ /dev/null @@ -1,172 +0,0 @@ -/* ntea.cc: code for manipulating NTEA information - - Copyright 1997, 1998, 2000, 2001, 2006 Red Hat, Inc. - - Written by Sergey S. Okhapkin (sos@prospect.com.ru) - -This file is part of Cygwin. - -This software is a copyrighted work licensed under the terms of the -Cygwin license. Please consult the file "CYGWIN_LICENSE" for -details. */ - -#include "winsup.h" -#include <stdlib.h> -#include <ntdef.h> -#include "security.h" -#include "ntdll.h" - -/* Default to not using NTEA information */ -bool allow_ntea; - -/* - * read_ea - read file's Extended Attribute. - * - * Parameters: - * file - pointer to filename - * attrname- pointer to EA name (case insensitiv) - * attrbuf - pointer to buffer to store EA's value. - * len - length of attrbuf. - * Return value: - * 0 - if file or attribute "attrname" not found. - * N - number of bytes stored in attrbuf if success. - * -1 - attrbuf too small for EA value. - */ - -int __stdcall -read_ea (HANDLE hdl, const char *file, const char *attrname, char *attrbuf, - int len) -{ - IO_STATUS_BLOCK io; - - /* Prepare buffer which receives the result. */ - ULONG flen = sizeof (FILE_FULL_EA_INFORMATION) + strlen (attrname) - + len + 1; - PFILE_FULL_EA_INFORMATION fea = (PFILE_FULL_EA_INFORMATION) alloca (flen); - /* Prepare buffer specifying the EA to search for. */ - ULONG glen = sizeof (FILE_GET_EA_INFORMATION) + strlen (attrname); - PFILE_GET_EA_INFORMATION gea = (PFILE_GET_EA_INFORMATION) alloca (glen); - gea->NextEntryOffset = 0; - gea->EaNameLength = strlen (attrname); - strcpy (gea->EaName, attrname); - - /* If no incoming hdl is given, the loop only runs once, trying to - open the file and to query the EA. If an incoming hdl is given, - the loop runs twice, first trying to query with the given hdl. - If this fails it tries to open the file and to query with that - handle again. */ - HANDLE h = hdl; - NTSTATUS status = STATUS_SUCCESS; - int ret = 0; - while (true) - { - if (!hdl && (h = CreateFile (file, FILE_READ_EA, - FILE_SHARE_READ | FILE_SHARE_WRITE, - &sec_none_nih, OPEN_EXISTING, - FILE_FLAG_BACKUP_SEMANTICS, NULL)) - == INVALID_HANDLE_VALUE) - { - debug_printf ("Opening %s for querying EA %s failed, %E", - file, attrname); - goto out; - } - status = NtQueryEaFile (h, &io, fea, flen, FALSE, gea, glen, NULL, TRUE); - if (NT_SUCCESS (status) || !hdl) - break; - debug_printf ("1. chance, %x = NtQueryEaFile (%s, %s), Win32 error %d", - status, file, attrname, RtlNtStatusToDosError (status)); - hdl = NULL; - } - if (!hdl) - CloseHandle (h); - if (!NT_SUCCESS (status)) - { - ret = -1; - debug_printf ("%x = NtQueryEaFile (%s, %s), Win32 error %d", - status, file, attrname, RtlNtStatusToDosError (status)); - } - if (!fea->EaValueLength) - ret = 0; - else - { - memcpy (attrbuf, fea->EaName + fea->EaNameLength + 1, - fea->EaValueLength); - ret = fea->EaValueLength; - } - -out: - debug_printf ("%d = read_ea (%x, %s, %s, %x, %d)", ret, hdl, file, attrname, - attrbuf, len); - return ret; -} - -/* - * write_ea - write file's Extended Attribute. - * - * Parameters: - * file - pointer to filename - * attrname- pointer to EA name (case insensitiv) - * attrbuf - pointer to buffer with EA value. - * len - length of attrbuf. - * Return value: - * true if success, false otherwice. - * Note: if len=0 given EA will be deleted. - */ - -BOOL __stdcall -write_ea (HANDLE hdl, const char *file, const char *attrname, - const char *attrbuf, int len) -{ - IO_STATUS_BLOCK io; - - /* Prepare buffer specifying the EA to write back. */ - ULONG flen = sizeof (FILE_FULL_EA_INFORMATION) + strlen (attrname) - + len + 1; - PFILE_FULL_EA_INFORMATION fea = (PFILE_FULL_EA_INFORMATION) alloca (flen); - fea->NextEntryOffset = 0; - fea->Flags = 0; - fea->EaNameLength = strlen (attrname); - fea->EaValueLength = len; - strcpy (fea->EaName, attrname); - memcpy (fea->EaName + fea->EaNameLength + 1, attrbuf, len); - - /* If no incoming hdl is given, the loop only runs once, trying to - open the file and to set the EA. If an incoming hdl is given, - the loop runs twice, first trying to set the EA with the given hdl. - If this fails it tries to open the file and to set the EA with that - handle again. */ - HANDLE h = hdl; - NTSTATUS status = STATUS_SUCCESS; - bool ret = false; - while (true) - { - if (!hdl && (h = CreateFile (file, FILE_READ_EA, - FILE_SHARE_READ | FILE_SHARE_WRITE, - &sec_none_nih, OPEN_EXISTING, - FILE_FLAG_BACKUP_SEMANTICS, NULL)) - == INVALID_HANDLE_VALUE) - { - debug_printf ("Opening %s for setting EA %s failed, %E", - file, attrname); - goto out; - } - status = NtSetEaFile (h, &io, fea, flen); - if (NT_SUCCESS (status) || !hdl) - break; - debug_printf ("1. chance, %x = NtQueryEaFile (%s, %s), Win32 error %d", - status, file, attrname, RtlNtStatusToDosError (status)); - hdl = NULL; - } - if (!hdl) - CloseHandle (h); - if (!NT_SUCCESS (status)) - debug_printf ("%x = NtQueryEaFile (%s, %s), Win32 error %d", - status, file, attrname, RtlNtStatusToDosError (status)); - else - ret = true; - -out: - debug_printf ("%d = write_ea (%x, %s, %s, %x, %d)", ret, hdl, file, attrname, - attrbuf, len); - return ret; -} |