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Sweden-Number/dlls/winaspi/aspi.c

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/**************************************************************************
ASPI routines
(C) 2000 David Elliott <dfe@infinite-internet.net>
Licensed under the WINE (X11) license
*/
/* These routines are to be called from either WNASPI32 or WINASPI */
/* FIXME:
* - Registry format is stupid for now.. fix that later
* - No way to override automatic /proc detection, maybe provide an
* HKEY_LOCAL_MACHINE\Software\Wine\Wine\Scsi regkey
* - Somewhat debating an #ifdef linux... technically all this code will
* run on another UNIX.. it will fail nicely.
* - Please add support for mapping multiple channels on host adapters to
* aspi controllers, e-mail me if you need help.
*/
/*
Registry format is currently:
HKEY_DYN_DATA
WineScsi
(default)=number of host adapters
hHHcCCtTTdDD=linux device name
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <dirent.h>
#include <unistd.h>
#include <errno.h>
#include "debugtools.h"
#include "winreg.h"
#include "winerror.h"
#include "winescsi.h"
DEFAULT_DEBUG_CHANNEL(aspi);
/* Internal function prototypes */
static void
SCSI_GetProcinfo();
#ifdef linux
static void
SCSI_MapHCtoController();
#endif
static void set_last_error(void)
{
int save_errno = errno; /* errno gets overwritten by printf */
switch (errno)
{
case EAGAIN:
SetLastError( ERROR_SHARING_VIOLATION );
break;
case EBADF:
SetLastError( ERROR_INVALID_HANDLE );
break;
case ENOSPC:
SetLastError( ERROR_HANDLE_DISK_FULL );
break;
case EACCES:
case EPERM:
case EROFS:
SetLastError( ERROR_ACCESS_DENIED );
break;
case EBUSY:
SetLastError( ERROR_LOCK_VIOLATION );
break;
case ENOENT:
SetLastError( ERROR_FILE_NOT_FOUND );
break;
case EISDIR:
SetLastError( ERROR_CANNOT_MAKE );
break;
case ENFILE:
case EMFILE:
SetLastError( ERROR_NO_MORE_FILES );
break;
case EEXIST:
SetLastError( ERROR_FILE_EXISTS );
break;
case EINVAL:
case ESPIPE:
SetLastError( ERROR_SEEK );
break;
case ENOTEMPTY:
SetLastError( ERROR_DIR_NOT_EMPTY );
break;
case ENOEXEC:
SetLastError( ERROR_BAD_FORMAT );
break;
default:
WARN( "unknown file error: %s", strerror(save_errno) );
SetLastError( ERROR_GEN_FAILURE );
break;
}
errno = save_errno;
}
/* Exported functions */
void
SCSI_Init()
{
/* For now we just call SCSI_GetProcinfo */
SCSI_GetProcinfo();
#ifdef linux
SCSI_MapHCtoController();
#endif
}
int
ASPI_GetNumControllers()
{
HKEY hkeyScsi;
HKEY hkeyControllerMap;
DWORD error;
DWORD type = REG_DWORD;
DWORD num_ha = 0;
DWORD cbData = sizeof(num_ha);
if( RegOpenKeyExA(HKEY_DYN_DATA, KEYNAME_SCSI, 0, KEY_ALL_ACCESS, &hkeyScsi ) != ERROR_SUCCESS )
{
ERR("Could not open HKEY_DYN_DATA\\%s\n",KEYNAME_SCSI);
return 0;
}
if( (error=RegOpenKeyExA(hkeyScsi, KEYNAME_SCSI_CONTROLLERMAP, 0, KEY_ALL_ACCESS, &hkeyControllerMap )) != ERROR_SUCCESS )
{
ERR("Could not open HKEY_DYN_DATA\\%s\\%s\n", KEYNAME_SCSI, KEYNAME_SCSI_CONTROLLERMAP);
RegCloseKey(hkeyScsi);
SetLastError(error);
return 0;
}
if( RegQueryValueExA(hkeyControllerMap, NULL, NULL, &type, (LPBYTE)&num_ha, &cbData ) != ERROR_SUCCESS )
{
ERR("Could not query value HKEY_DYN_DATA\\%s\n",KEYNAME_SCSI);
num_ha=0;
}
RegCloseKey(hkeyControllerMap);
RegCloseKey(hkeyScsi);
TRACE("Returning %ld host adapters\n", num_ha );
return num_ha;
}
BOOL
SCSI_GetDeviceName( int h, int c, int t, int d, LPSTR devstr, LPDWORD lpcbData )
{
char idstr[20];
HKEY hkeyScsi;
DWORD type;
if( RegOpenKeyExA(HKEY_DYN_DATA, KEYNAME_SCSI, 0, KEY_ALL_ACCESS, &hkeyScsi ) != ERROR_SUCCESS )
{
ERR("Could not open HKEY_DYN_DATA\\%s\n",KEYNAME_SCSI);
return FALSE;
}
sprintf(idstr, "h%02dc%02dt%02dd%02d", h, c, t, d);
if( RegQueryValueExA(hkeyScsi, idstr, NULL, &type, devstr, lpcbData) != ERROR_SUCCESS )
{
WARN("Could not query value HKEY_DYN_DATA\\%s\\%s\n",KEYNAME_SCSI, idstr);
RegCloseKey(hkeyScsi);
return FALSE;
}
RegCloseKey(hkeyScsi);
TRACE("scsi %s: Device name: %s\n",idstr,devstr);
return TRUE;
}
/* SCSI_GetHCforController
* RETURNS
* HIWORD: Host Adapter
* LOWORD: Channel
*/
DWORD
ASPI_GetHCforController( int controller )
{
DWORD hc = 0xFFFFFFFF;
char cstr[20];
DWORD error;
HKEY hkeyScsi;
HKEY hkeyControllerMap;
DWORD type = REG_DWORD;
DWORD cbData = sizeof(DWORD);
DWORD disposition;
#if 0
FIXME("Please fix to map each channel of each host adapter to the proper ASPI controller number!\n");
hc = (controller << 16);
return hc;
#endif
if( (error=RegCreateKeyExA(HKEY_DYN_DATA, KEYNAME_SCSI, 0, NULL, REG_OPTION_VOLATILE, KEY_ALL_ACCESS, NULL, &hkeyScsi, &disposition )) != ERROR_SUCCESS )
{
ERR("Could not open HKEY_DYN_DATA\\%s\n",KEYNAME_SCSI);
SetLastError(error);
return hc;
}
if( disposition != REG_OPENED_EXISTING_KEY )
{
WARN("Created HKEY_DYN_DATA\\%s\n",KEYNAME_SCSI);
}
if( (error=RegCreateKeyExA(hkeyScsi, KEYNAME_SCSI_CONTROLLERMAP, 0, NULL, REG_OPTION_VOLATILE, KEY_ALL_ACCESS, NULL, &hkeyControllerMap, &disposition )) != ERROR_SUCCESS )
{
ERR("Could not open HKEY_DYN_DATA\\%s\\%s\n", KEYNAME_SCSI, KEYNAME_SCSI_CONTROLLERMAP);
RegCloseKey(hkeyScsi);
SetLastError(error);
return hc;
}
if( disposition != REG_OPENED_EXISTING_KEY )
{
WARN("Created HKEY_DYN_DATA\\%s\\%s\n",KEYNAME_SCSI, KEYNAME_SCSI_CONTROLLERMAP);
}
sprintf(cstr, "c%02d", controller);
if( (error=RegQueryValueExA( hkeyControllerMap, cstr, 0, &type, (LPBYTE)&hc, &cbData)) != ERROR_SUCCESS )
{
ERR("Could not open HKEY_DYN_DATA\\%s\\%s\\%s, error=%lx\n", KEYNAME_SCSI, KEYNAME_SCSI_CONTROLLERMAP, cstr, error );
SetLastError( error );
}
RegCloseKey(hkeyControllerMap);
RegCloseKey(hkeyScsi);
return hc;
};
int
SCSI_OpenDevice( int h, int c, int t, int d )
{
char devstr[20];
DWORD cbData = 20;
int fd = -1;
char dainbread_linux_hack = 1;
if(!SCSI_GetDeviceName( h, c, t, d, devstr, &cbData ))
{
WARN("Could not get device name for h%02dc%02dt%02dd%02d\n", h, c, t, d);
return -1;
}
linux_hack:
TRACE("Opening device %s mode O_RDWR\n",devstr);
fd = open(devstr, O_RDWR);
if( fd < 0 )
{
int len = strlen(devstr);
set_last_error(); /* SetLastError() to errno */
TRACE("Open failed (%s)\n", strerror(errno));
/* in case of "/dev/sgX", convert from sga to sg0
* and the other way around.
* FIXME: remove it if the distributions
* finally manage to agree on something.
* The best would probably be a complete
* rewrite of the Linux SCSI layer
* to use CAM + devfs :-) */
if ( (dainbread_linux_hack) &&
(len >= 3) &&
(devstr[len-3] == 's') && (devstr[len-2] == 'g') )
{
char *p = &devstr[len-1];
*p = (*p >= 'a') ? *p - 'a' + '0' : *p - '0' + 'a';
dainbread_linux_hack = 0;
TRACE("Retry with \"equivalent\" Linux device '%s'\n", devstr);
goto linux_hack;
}
}
return fd;
}
#ifdef linux
/* SCSI_Fix_CMD_LEN
* Checks to make sure the CMD_LEN is correct
*/
void
SCSI_Fix_CMD_LEN(int fd, int cmd, int len)
{
int index=(cmd>>5)&7;
if (len!=scsi_command_size[index])
{
TRACE("CDBLen for command %d claims to be %d, expected %d\n",
cmd, len, scsi_command_size[index]);
ioctl(fd,SG_NEXT_CMD_LEN,&len);
}
}
int
SCSI_LinuxSetTimeout( int fd, int timeout )
{
int retval;
TRACE("Setting timeout to %d jiffies\n", timeout);
retval=ioctl(fd,SG_SET_TIMEOUT,&timeout);
if(retval)
{
WARN("Could not set timeout ! (%s)\n", strerror(errno));
}
return retval;
}
/* This function takes care of the write/read to the linux sg device.
* It returns TRUE or FALSE and uses set_last_error() to convert
* UNIX errno to Windows GetLastError(). The reason for that is that
* several programs will check that error and we might as well set
* it here. We also return the value of the read call in
* lpcbBytesReturned.
*/
BOOL /* NOTE: This function SHOULD BLOCK */
SCSI_LinuxDeviceIo( int fd,
struct sg_header * lpInBuffer, DWORD cbInBuffer,
struct sg_header * lpOutBuffer, DWORD cbOutBuffer,
LPDWORD lpcbBytesReturned )
{
DWORD dwBytes;
DWORD save_error;
TRACE("Writing to Linux sg device\n");
dwBytes = write( fd, lpInBuffer, cbInBuffer );
if( dwBytes != cbInBuffer )
{
set_last_error();
save_error = GetLastError();
WARN("Not enough bytes written to scsi device. bytes=%ld .. %ld\n", cbInBuffer, dwBytes );
/* FIXME: set_last_error() never sets error to ERROR_NOT_ENOUGH_MEMORY... */
if( save_error == ERROR_NOT_ENOUGH_MEMORY )
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)");
WARN("error= %ld\n", save_error );
*lpcbBytesReturned = 0;
return FALSE;
}
TRACE("Reading reply from Linux sg device\n");
*lpcbBytesReturned = read( fd, lpOutBuffer, cbOutBuffer );
if( *lpcbBytesReturned != cbOutBuffer )
{
set_last_error();
save_error = GetLastError();
WARN("Not enough bytes read from scsi device. bytes=%ld .. %ld\n", cbOutBuffer, *lpcbBytesReturned);
WARN("error= %ld\n", save_error );
return FALSE;
}
return TRUE;
}
/* Internal functions */
struct LinuxProcScsiDevice
{
int host;
int channel;
int target;
int lun;
char vendor[9];
char model[17];
char rev[5];
char type[33];
int ansirev;
};
/*
* we need to declare white spaces explicitly via %*1[ ],
* as there are very dainbread CD-ROM devices out there
* which have their manufacturer name blanked out via spaces,
* which confuses fscanf's parsing (skips all blank spaces)
*/
static int
SCSI_getprocentry( FILE * procfile, struct LinuxProcScsiDevice * dev )
{
int result;
result = fscanf( procfile,
"Host:%*1[ ]scsi%d%*1[ ]Channel:%*1[ ]%d%*1[ ]Id:%*1[ ]%d%*1[ ]Lun:%*1[ ]%d\n",
&dev->host,
&dev->channel,
&dev->target,
&dev->lun );
if( result == EOF )
{
/* "end of entries" return, so no TRACE() here */
return EOF;
}
if( result != 4 )
{
ERR("bus id line scan count error\n");
return 0;
}
result = fscanf( procfile,
" Vendor:%*1[ ]%8c%*1[ ]Model:%*1[ ]%16c%*1[ ]Rev:%*1[ ]%4c\n",
dev->vendor,
dev->model,
dev->rev );
if( result != 3 )
{
ERR("model line scan count error\n");
return 0;
}
result = fscanf( procfile,
" Type:%*3[ ]%32c%*1[ ]ANSI%*1[ ]SCSI%*1[ ]revision:%*1[ ]%d\n",
dev->type,
&dev->ansirev );
if( result != 2 )
{
ERR("SCSI type line scan count error\n");
return 0;
}
/* Since we fscanf with %XXc instead of %s.. put a NULL at end */
dev->vendor[8] = 0;
dev->model[16] = 0;
dev->rev[4] = 0;
dev->type[32] = 0;
return 1;
}
static void
SCSI_printprocentry( const struct LinuxProcScsiDevice * dev )
{
TRACE( "Host: scsi%d Channel: %02d Id: %02d Lun: %02d\n",
dev->host,
dev->channel,
dev->target,
dev->lun );
TRACE( " Vendor: %s Model: %s Rev: %s\n",
dev->vendor,
dev->model,
dev->rev );
TRACE( " Type: %s ANSI SCSI revision: %02d\n",
dev->type,
dev->ansirev );
}
static BOOL
SCSI_PutRegControllerMap( HKEY hkeyControllerMap, int num_controller, int ha, int chan)
{
DWORD error;
char cstr[20];
DWORD hc;
hc = (ha << 16) + chan;
sprintf(cstr, "c%02d", num_controller);
if( (error=RegSetValueExA( hkeyControllerMap, cstr, 0, REG_DWORD, (LPBYTE)&hc, sizeof(DWORD))) != ERROR_SUCCESS )
{
ERR("Could not create HKEY_DYN_DATA\\%s\\%s\\%s\n", KEYNAME_SCSI, KEYNAME_SCSI_CONTROLLERMAP, cstr );
}
return error;
}
static void
SCSI_MapHCtoController()
{
HKEY hkeyScsi;
HKEY hkeyControllerMap;
DWORD disposition;
char idstr[20];
DWORD cbIdStr;
int i = 0;
DWORD type = 0;
DWORD error;
DWORD num_controller = 0;
int last_ha = -1;
int last_chan = -1;
int ha = 0;
int chan = 0;
if( RegCreateKeyExA(HKEY_DYN_DATA, KEYNAME_SCSI, 0, NULL, REG_OPTION_VOLATILE, KEY_ALL_ACCESS, NULL, &hkeyScsi, &disposition ) != ERROR_SUCCESS )
{
ERR("Could not open HKEY_DYN_DATA\\%s\n",KEYNAME_SCSI);
return;
}
if( disposition != REG_OPENED_EXISTING_KEY )
{
WARN("Created HKEY_DYN_DATA\\%s\n",KEYNAME_SCSI);
}
if( RegCreateKeyExA(hkeyScsi, KEYNAME_SCSI_CONTROLLERMAP, 0, NULL, REG_OPTION_VOLATILE, KEY_ALL_ACCESS, NULL, &hkeyControllerMap, &disposition ) != ERROR_SUCCESS )
{
ERR("Could not create HKEY_DYN_DATA\\%s\\%s\n", KEYNAME_SCSI, KEYNAME_SCSI_CONTROLLERMAP);
RegCloseKey(hkeyScsi);
return;
}
for( i=0; cbIdStr = sizeof(idstr), (error=RegEnumValueA( hkeyScsi, i, idstr, &cbIdStr, NULL, &type, NULL, NULL )) == ERROR_SUCCESS; i++ )
{
if(idstr[0] == '\0') continue; /* skip the default value */
if(sscanf(idstr, "h%02dc%02dt%*02dd%*02d", &ha, &chan) != 2) {
ERR("incorrect reg. value %s\n", debugstr_a(idstr));
continue;
}
if( last_ha < ha )
{ /* Next HA */
last_ha = ha;
last_chan = chan;
SCSI_PutRegControllerMap( hkeyControllerMap, num_controller, ha, chan);
num_controller++;
}
else if( last_ha > ha )
{
FIXME("Expected registry to be sorted\n");
}
/* last_ha == ha */
else if( last_chan < chan )
{
last_chan = chan;
SCSI_PutRegControllerMap( hkeyControllerMap, num_controller, ha, chan);
num_controller++;
}
else if( last_chan > chan )
{
FIXME("Expected registry to be sorted\n");
}
/* else last_ha == ha && last_chan == chan so do nothing */
}
/* Set (default) value to number of controllers */
if( RegSetValueExA(hkeyControllerMap, NULL, 0, REG_DWORD, (LPBYTE)&num_controller, sizeof(DWORD) ) != ERROR_SUCCESS )
{
ERR("Could not set value HKEY_DYN_DATA\\%s\\%s\n",KEYNAME_SCSI, KEYNAME_SCSI_CONTROLLERMAP);
}
RegCloseKey(hkeyControllerMap);
RegCloseKey(hkeyScsi);
return;
}
#endif
int SCSI_Linux_CheckDevices(void)
{
DIR *devdir;
struct dirent *dent = NULL;
devdir = opendir("/dev");
for (dent=readdir(devdir);dent;dent=readdir(devdir))
{
if (!(strncmp(dent->d_name, "sg", 2)))
break;
}
closedir(devdir);
if (dent == NULL)
{
MESSAGE("WARNING: You don't have any /dev/sgX generic scsi devices ! \"man MAKEDEV\" !\n");
return 0;
}
return 1;
}
static void
SCSI_GetProcinfo()
/* I'll admit, this function is somewhat of a mess... it was originally
* designed to make some sort of linked list then I realized that
* HKEY_DYN_DATA would be a lot less messy
*/
{
#ifdef linux
static const char procname[] = "/proc/scsi/scsi";
FILE * procfile = NULL;
char read_line[40], read1[10] = "\0", read2[10] = "\0";
int result = 0;
struct LinuxProcScsiDevice dev;
char idstr[20];
char devstr[20];
int devnum=0;
int num_ha = 0;
HKEY hkeyScsi;
DWORD disposition;
/* Check whether user has generic scsi devices at all */
if (!(SCSI_Linux_CheckDevices()))
return;
procfile = fopen( procname, "r" );
if( !procfile )
{
ERR("Could not open %s\n", procname);
return;
}
fgets(read_line, 40, procfile);
sscanf( read_line, "Attached %9s %9s", read1, read2);
if(strcmp(read1, "devices:"))
{
ERR("Incorrect %s format\n", procname);
return;
}
if(!(strcmp(read2, "none")))
{
ERR("No devices found in %s. Make sure you loaded your SCSI driver or set up ide-scsi emulation for your IDE device if this app needs it !\n", procname);
return;
}
if( RegCreateKeyExA(HKEY_DYN_DATA, KEYNAME_SCSI, 0, NULL, REG_OPTION_VOLATILE, KEY_ALL_ACCESS, NULL, &hkeyScsi, &disposition ) != ERROR_SUCCESS )
{
ERR("Could not create HKEY_DYN_DATA\\%s\n",KEYNAME_SCSI);
return;
}
/* Read info for one device */
while( (result = SCSI_getprocentry(procfile, &dev)) > 0 )
{
/* Add to registry */
sprintf(idstr, "h%02dc%02dt%02dd%02d", dev.host, dev.channel, dev.target, dev.lun);
sprintf(devstr, "/dev/sg%c", 'a'+devnum);
if( RegSetValueExA(hkeyScsi, idstr, 0, REG_SZ, devstr, strlen(devstr)+1 ) != ERROR_SUCCESS )
{
ERR("Could not set value HKEY_DYN_DATA\\%s\\%s\n",KEYNAME_SCSI, idstr);
}
/* Debug output */
SCSI_printprocentry( &dev );
/* FIXME: We *REALLY* need number of controllers.. not ha */
/* num of hostadapters is highest ha + 1 */
if( dev.host >= num_ha )
num_ha = dev.host+1;
devnum++;
} /* while(1) */
if( result != EOF )
{
ERR("Sorry, incorrect %s format\n", procname);
}
fclose( procfile );
if( RegSetValueExA(hkeyScsi, NULL, 0, REG_DWORD, (LPBYTE)&num_ha, sizeof(num_ha) ) != ERROR_SUCCESS )
{
ERR("Could not set value HKEY_DYN_DATA\\%s\n",KEYNAME_SCSI);
}
RegCloseKey(hkeyScsi);
return;
#endif
}
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