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https://github.com/reactos/wine.git
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360 lines
9.9 KiB
C
360 lines
9.9 KiB
C
/**************************************************************************
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* ASPI routines
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* Copyright (C) 2000 David Elliott <dfe@infinite-internet.net>
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* Copyright (C) 2005 Vitaliy Margolen
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/* These routines are to be called from either WNASPI32 or WINASPI */
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/* FIXME:
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* - No way to override automatic /proc detection, maybe provide an
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* HKEY_LOCAL_MACHINE\Software\Wine\Wine\Scsi regkey
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* - Somewhat debating an #ifdef linux... technically all this code will
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* run on another UNIX.. it will fail nicely.
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* - Please add support for mapping multiple channels on host adapters to
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* aspi controllers, e-mail me if you need help.
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <stdio.h>
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#include <stdarg.h>
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#include <sys/types.h>
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#ifdef HAVE_SYS_IOCTL_H
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#include <sys/ioctl.h>
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#endif
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#include <fcntl.h>
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#ifdef HAVE_DIRENT_H
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# include <dirent.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include <errno.h>
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#include <string.h>
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#include "windef.h"
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#include "winbase.h"
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#include "winreg.h"
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#include "winerror.h"
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#include "winescsi.h"
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#include "wine/debug.h"
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#include "wine/unicode.h"
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WINE_DEFAULT_DEBUG_CHANNEL(aspi);
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#ifdef linux
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static void set_last_error(void)
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{
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int save_errno = errno; /* errno gets overwritten by printf */
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switch (errno)
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{
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case EAGAIN:
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SetLastError( ERROR_SHARING_VIOLATION );
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break;
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case EBADF:
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SetLastError( ERROR_INVALID_HANDLE );
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break;
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case ENOSPC:
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SetLastError( ERROR_HANDLE_DISK_FULL );
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break;
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case EACCES:
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case EPERM:
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case EROFS:
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SetLastError( ERROR_ACCESS_DENIED );
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break;
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case EBUSY:
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SetLastError( ERROR_LOCK_VIOLATION );
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break;
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case ENOENT:
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SetLastError( ERROR_FILE_NOT_FOUND );
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break;
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case EISDIR:
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SetLastError( ERROR_CANNOT_MAKE );
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break;
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case ENFILE:
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case EMFILE:
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SetLastError( ERROR_NO_MORE_FILES );
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break;
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case EEXIST:
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SetLastError( ERROR_FILE_EXISTS );
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break;
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case EINVAL:
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case ESPIPE:
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SetLastError( ERROR_SEEK );
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break;
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case ENOTEMPTY:
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SetLastError( ERROR_DIR_NOT_EMPTY );
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break;
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case ENOEXEC:
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SetLastError( ERROR_BAD_FORMAT );
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break;
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default:
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WARN( "unknown file error: %s\n", strerror(save_errno) );
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SetLastError( ERROR_GEN_FAILURE );
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break;
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}
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errno = save_errno;
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}
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#endif
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static const WCHAR wDevicemapScsi[] = {'H','A','R','D','W','A','R','E','\\','D','E','V','I','C','E','M','A','P','\\','S','c','s','i',0};
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/* Exported functions */
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int ASPI_GetNumControllers(void)
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{
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HKEY hkeyScsi, hkeyPort;
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DWORD i = 0, numPorts, num_ha = 0;
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WCHAR wPortName[15];
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if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, wDevicemapScsi, 0,
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KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS, &hkeyScsi) != ERROR_SUCCESS )
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{
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ERR("Could not open HKLM\\%s\n", debugstr_w(wDevicemapScsi));
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return 0;
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}
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while (RegEnumKeyW(hkeyScsi, i++, wPortName, sizeof(wPortName)/sizeof(wPortName[0])) == ERROR_SUCCESS)
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{
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if (RegOpenKeyExW(hkeyScsi, wPortName, 0, KEY_QUERY_VALUE, &hkeyPort) == ERROR_SUCCESS)
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{
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if (RegQueryInfoKeyW(hkeyPort, NULL, NULL, NULL, &numPorts, NULL, NULL,
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NULL, NULL, NULL, NULL, NULL) == ERROR_SUCCESS)
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{
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num_ha += numPorts;
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}
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RegCloseKey(hkeyPort);
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}
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}
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RegCloseKey(hkeyScsi);
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TRACE("Returning %d host adapters\n", num_ha );
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return num_ha;
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}
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static BOOL SCSI_GetDeviceName( int h, int c, int t, int d, LPSTR devstr, LPDWORD lpcbData )
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{
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char buffer[200];
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HKEY hkeyScsi;
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DWORD type;
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snprintf(buffer, sizeof(buffer), KEYNAME_SCSI, h, c, t, d);
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if( RegOpenKeyExA(HKEY_LOCAL_MACHINE, buffer, 0, KEY_ALL_ACCESS, &hkeyScsi ) != ERROR_SUCCESS )
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{
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TRACE("Could not open HKLM\\%s; device does not exist\n", buffer);
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return FALSE;
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}
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if( RegQueryValueExA(hkeyScsi, "UnixDeviceName", NULL, &type, (LPBYTE)devstr, lpcbData) != ERROR_SUCCESS )
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{
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WARN("Could not query value HKLM\\%s\\UnixDeviceName\n", buffer);
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RegCloseKey(hkeyScsi);
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return FALSE;
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}
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RegCloseKey(hkeyScsi);
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TRACE("Device name: %s\n", devstr);
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return TRUE;
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}
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/* SCSI_GetHCforController
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* RETURNS
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* HIWORD: Host Adapter
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* LOWORD: Channel
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*/
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DWORD ASPI_GetHCforController( int controller )
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{
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HKEY hkeyScsi, hkeyPort;
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DWORD i = 0, numPorts;
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int num_ha = controller + 1;
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WCHAR wPortName[15];
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WCHAR wBusName[15];
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if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, wDevicemapScsi, 0,
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KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS, &hkeyScsi) != ERROR_SUCCESS )
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{
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ERR("Could not open HKLM\\%s\n", debugstr_w(wDevicemapScsi));
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return 0xFFFFFFFF;
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}
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while (RegEnumKeyW(hkeyScsi, i++, wPortName, sizeof(wPortName)/sizeof(wPortName[0])) == ERROR_SUCCESS)
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{
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if (RegOpenKeyExW(hkeyScsi, wPortName, 0, KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS,
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&hkeyPort) == ERROR_SUCCESS)
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{
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if (RegQueryInfoKeyW(hkeyPort, NULL, NULL, NULL, &numPorts, NULL, NULL,
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NULL, NULL, NULL, NULL, NULL) == ERROR_SUCCESS)
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{
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num_ha -= numPorts;
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if (num_ha <= 0) break;
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}
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else
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RegCloseKey(hkeyPort);
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}
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}
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RegCloseKey(hkeyScsi);
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if (num_ha > 0)
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{
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ERR("Invalid controller(%d)\n", controller);
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return 0xFFFFFFFF;
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}
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if (RegEnumKeyW(hkeyPort, -num_ha, wBusName, sizeof(wBusName)/sizeof(wBusName[0])) != ERROR_SUCCESS)
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{
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ERR("Failed to enumerate keys\n");
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RegCloseKey(hkeyPort);
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return 0xFFFFFFFF;
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}
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RegCloseKey(hkeyPort);
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return (atoiW(&wPortName[9]) << 16) + atoiW(&wBusName[9]);
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}
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int SCSI_OpenDevice( int h, int c, int t, int d )
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{
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char devstr[20];
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DWORD cbData = 20;
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int fd = -1;
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if(!SCSI_GetDeviceName( h, c, t, d, devstr, &cbData ))
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{
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WARN("Could not get device name for h%02dc%02dt%02dd%02d\n", h, c, t, d);
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return -1;
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}
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TRACE("Opening device %s mode O_RDWR\n",devstr);
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fd = open(devstr, O_RDWR);
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if (fd == -1) {
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char *errstring = strerror(errno);
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ERR("Failed to open device %s: %s\n", devstr, errstring);
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}
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return fd;
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}
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#ifdef linux
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/* SCSI_Fix_CMD_LEN
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* Checks to make sure the CMD_LEN is correct
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*/
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void
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SCSI_Fix_CMD_LEN(int fd, int cmd, int len)
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{
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/* This is what the linux kernel thinks.... */
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static const unsigned char scsi_command_size[8] =
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{
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6, 10, 10, 12,
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12, 12, 10, 10
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};
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int index=(cmd>>5)&7;
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if (len!=scsi_command_size[index])
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{
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TRACE("CDBLen for command %d claims to be %d, expected %d\n",
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cmd, len, scsi_command_size[index]);
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ioctl(fd,SG_NEXT_CMD_LEN,&len);
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}
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}
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int
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SCSI_LinuxSetTimeout( int fd, int timeout )
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{
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int retval;
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TRACE("Setting timeout to %d jiffies\n", timeout);
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retval=ioctl(fd,SG_SET_TIMEOUT,&timeout);
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if(retval)
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{
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WARN("Could not set timeout ! (%s)\n", strerror(errno));
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}
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return retval;
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}
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/* This function takes care of the write/read to the linux sg device.
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* It returns TRUE or FALSE and uses set_last_error() to convert
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* UNIX errno to Windows GetLastError(). The reason for that is that
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* several programs will check that error and we might as well set
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* it here. We also return the value of the read call in
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* lpcbBytesReturned.
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*/
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BOOL /* NOTE: This function SHOULD BLOCK */
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SCSI_LinuxDeviceIo( int fd,
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struct sg_header * lpInBuffer, DWORD cbInBuffer,
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struct sg_header * lpOutBuffer, DWORD cbOutBuffer,
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LPDWORD lpcbBytesReturned )
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{
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DWORD dwBytes;
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DWORD save_error;
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TRACE("Writing to Linux sg device\n");
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dwBytes = write( fd, lpInBuffer, cbInBuffer );
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if( dwBytes != cbInBuffer )
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{
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set_last_error();
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save_error = GetLastError();
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WARN("Not enough bytes written to scsi device. bytes=%d .. %d\n", cbInBuffer, dwBytes );
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/* FIXME: set_last_error() never sets error to ERROR_NOT_ENOUGH_MEMORY... */
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if( save_error == ERROR_NOT_ENOUGH_MEMORY )
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MESSAGE("Your Linux kernel was not able to handle the amount of data sent to the scsi device. Try recompiling with a larger SG_BIG_BUFF value (kernel 2.0.x sg.h)\n");
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WARN("error= %d\n", save_error );
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*lpcbBytesReturned = 0;
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return FALSE;
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}
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TRACE("Reading reply from Linux sg device\n");
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*lpcbBytesReturned = read( fd, lpOutBuffer, cbOutBuffer );
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if( *lpcbBytesReturned != cbOutBuffer )
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{
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set_last_error();
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save_error = GetLastError();
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WARN("Not enough bytes read from scsi device. bytes=%d .. %d\n", cbOutBuffer, *lpcbBytesReturned);
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WARN("error= %d\n", save_error );
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return FALSE;
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}
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return TRUE;
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}
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static void SCSI_Linux_CheckDevices(void)
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{
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DIR *devdir;
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struct dirent *dent = NULL;
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devdir = opendir("/dev");
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for (dent=readdir(devdir);dent;dent=readdir(devdir))
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{
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if (!(strncmp(dent->d_name, "sg", 2)))
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break;
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}
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closedir(devdir);
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if (dent == NULL)
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{
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TRACE("WARNING: You don't have any /dev/sgX generic scsi devices ! \"man MAKEDEV\" !\n");
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return;
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}
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}
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#endif
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void SCSI_Init(void)
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{
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#ifdef linux
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SCSI_Linux_CheckDevices();
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#endif
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}
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