mountmgr: Determine and store the filesystem type, label, and serial.
Copied with minimal adaptation from kernel32/volume.c Signed-off-by: Zebediah Figura <zfigura@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Zebediah Figura
Alexandre Julliard
parent
73ad2954a3
commit
37ed655903
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@ -71,6 +71,16 @@ static const WCHAR target_id_keyW[] = {'T','a','r','g','e','t',' ','I','d',' ','
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static const WCHAR lun_keyW[] = {'L','o','g','i','c','a','l',' ','U','n','i','t',' ','I','d',' ','%','d',0};
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static const WCHAR devnameW[] = {'D','e','v','i','c','e','N','a','m','e',0};
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enum fs_type
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{
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FS_ERROR, /* error accessing the device */
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FS_UNKNOWN, /* unknown file system */
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FS_FAT1216,
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FS_FAT32,
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FS_ISO9660,
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FS_UDF /* For reference [E] = Ecma-167.pdf, [U] = udf260.pdf */
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};
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struct disk_device
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{
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enum device_type type; /* drive type */
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@ -90,6 +100,9 @@ struct volume
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unsigned int ref; /* ref count */
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GUID guid; /* volume uuid */
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struct mount_point *mount; /* Volume{xxx} mount point */
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WCHAR label[256]; /* volume label */
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DWORD serial; /* volume serial number */
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enum fs_type fs_type; /* file system type */
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};
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struct dos_drive
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@ -204,6 +217,510 @@ static void send_notify( int drive, int code )
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WM_DEVICECHANGE, code, (LPARAM)&info );
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}
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#define BLOCK_SIZE 2048
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#define SUPERBLOCK_SIZE BLOCK_SIZE
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#define CDFRAMES_PERSEC 75
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#define CDFRAMES_PERMIN (CDFRAMES_PERSEC * 60)
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#define FRAME_OF_ADDR(a) ((a)[1] * CDFRAMES_PERMIN + (a)[2] * CDFRAMES_PERSEC + (a)[3])
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#define FRAME_OF_TOC(toc, idx) FRAME_OF_ADDR((toc)->TrackData[(idx) - (toc)->FirstTrack].Address)
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#define GETWORD(buf,off) MAKEWORD(buf[(off)],buf[(off+1)])
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#define GETLONG(buf,off) MAKELONG(GETWORD(buf,off),GETWORD(buf,off+2))
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static int open_volume_file( const struct volume *volume, const char *file )
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{
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const char *unix_mount = volume->device->unix_mount;
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char *path;
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int fd;
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if (!unix_mount) return -1;
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if (unix_mount[0] == '/')
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{
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if (!(path = HeapAlloc( GetProcessHeap(), 0, strlen( unix_mount ) + 1 + strlen( file ) + 1 )))
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return -1;
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strcpy( path, unix_mount );
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}
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else
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{
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const char *config_dir = wine_get_config_dir();
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if (!(path = HeapAlloc( GetProcessHeap(), 0, strlen( config_dir )
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+ strlen("/dosdevices/") + strlen(unix_mount) + 1 + strlen( file ) + 1 )))
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return -1;
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strcpy( path, config_dir );
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strcat( path, "/dosdevices/" );
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strcat( path, unix_mount );
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}
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strcat( path, "/" );
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strcat( path, file );
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fd = open( path, O_RDONLY );
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HeapFree( GetProcessHeap(), 0, path );
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return fd;
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}
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/* get the label by reading it from a file at the root of the filesystem */
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static void get_filesystem_label( struct volume *volume )
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{
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int fd;
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ssize_t size;
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char buffer[256], *p;
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volume->label[0] = 0;
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if ((fd = open_volume_file( volume, ".windows-label" )) == -1)
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return;
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size = read( fd, buffer, sizeof(buffer) );
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close( fd );
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p = buffer + size;
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while (p > buffer && (p[-1] == ' ' || p[-1] == '\r' || p[-1] == '\n')) p--;
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*p = 0;
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if (!MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, volume->label, ARRAY_SIZE(volume->label) ))
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volume->label[ARRAY_SIZE(volume->label) - 1] = 0;
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}
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/* get the serial number by reading it from a file at the root of the filesystem */
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static void get_filesystem_serial( struct volume *volume )
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{
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int fd;
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ssize_t size;
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char buffer[32];
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volume->serial = 0;
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if ((fd = open_volume_file( volume, ".windows-serial" )) == -1)
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return;
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size = read( fd, buffer, sizeof(buffer) );
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close( fd );
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if (size < 0) return;
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buffer[size] = 0;
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volume->serial = strtoul( buffer, NULL, 16 );
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}
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/******************************************************************
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* VOLUME_FindCdRomDataBestVoldesc
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*/
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static DWORD VOLUME_FindCdRomDataBestVoldesc( HANDLE handle )
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{
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BYTE cur_vd_type, max_vd_type = 0;
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BYTE buffer[0x800];
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DWORD size, offs, best_offs = 0, extra_offs = 0;
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for (offs = 0x8000; offs <= 0x9800; offs += 0x800)
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{
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/* if 'CDROM' occurs at position 8, this is a pre-iso9660 cd, and
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* the volume label is displaced forward by 8
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*/
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if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs) break;
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if (!ReadFile( handle, buffer, sizeof(buffer), &size, NULL )) break;
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if (size != sizeof(buffer)) break;
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/* check for non-ISO9660 signature */
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if (!memcmp( buffer + 11, "ROM", 3 )) extra_offs = 8;
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cur_vd_type = buffer[extra_offs];
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if (cur_vd_type == 0xff) /* voldesc set terminator */
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break;
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if (cur_vd_type > max_vd_type)
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{
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max_vd_type = cur_vd_type;
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best_offs = offs + extra_offs;
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}
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}
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return best_offs;
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}
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/***********************************************************************
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* VOLUME_ReadFATSuperblock
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*/
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static enum fs_type VOLUME_ReadFATSuperblock( HANDLE handle, BYTE *buff )
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{
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DWORD size;
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/* try a fixed disk, with a FAT partition */
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if (SetFilePointer( handle, 0, NULL, FILE_BEGIN ) != 0 ||
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!ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ))
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{
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if (GetLastError() == ERROR_BAD_DEV_TYPE) return FS_UNKNOWN; /* not a real device */
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return FS_ERROR;
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}
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if (size < SUPERBLOCK_SIZE) return FS_UNKNOWN;
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/* FIXME: do really all FAT have their name beginning with
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* "FAT" ? (At least FAT12, FAT16 and FAT32 have :)
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*/
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if (!memcmp(buff+0x36, "FAT", 3) || !memcmp(buff+0x52, "FAT", 3))
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{
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/* guess which type of FAT we have */
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int reasonable;
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unsigned int sectors,
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sect_per_fat,
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total_sectors,
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num_boot_sectors,
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num_fats,
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num_root_dir_ents,
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bytes_per_sector,
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sectors_per_cluster,
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nclust;
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sect_per_fat = GETWORD(buff, 0x16);
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if (!sect_per_fat) sect_per_fat = GETLONG(buff, 0x24);
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total_sectors = GETWORD(buff, 0x13);
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if (!total_sectors)
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total_sectors = GETLONG(buff, 0x20);
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num_boot_sectors = GETWORD(buff, 0x0e);
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num_fats = buff[0x10];
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num_root_dir_ents = GETWORD(buff, 0x11);
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bytes_per_sector = GETWORD(buff, 0x0b);
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sectors_per_cluster = buff[0x0d];
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/* check if the parameters are reasonable and will not cause
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* arithmetic errors in the calculation */
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reasonable = num_boot_sectors < total_sectors &&
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num_fats < 16 &&
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bytes_per_sector >= 512 && bytes_per_sector % 512 == 0 &&
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sectors_per_cluster >= 1;
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if (!reasonable) return FS_UNKNOWN;
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sectors = total_sectors - num_boot_sectors - num_fats * sect_per_fat -
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(num_root_dir_ents * 32 + bytes_per_sector - 1) / bytes_per_sector;
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nclust = sectors / sectors_per_cluster;
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if ((buff[0x42] == 0x28 || buff[0x42] == 0x29) &&
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!memcmp(buff+0x52, "FAT", 3)) return FS_FAT32;
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if (nclust < 65525)
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{
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if ((buff[0x26] == 0x28 || buff[0x26] == 0x29) &&
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!memcmp(buff+0x36, "FAT", 3))
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return FS_FAT1216;
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}
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}
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return FS_UNKNOWN;
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}
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/***********************************************************************
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* VOLUME_ReadCDBlock
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*/
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static BOOL VOLUME_ReadCDBlock( HANDLE handle, BYTE *buff, INT offs )
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{
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DWORD size, whence = offs >= 0 ? FILE_BEGIN : FILE_END;
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if (SetFilePointer( handle, offs, NULL, whence ) != offs ||
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!ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
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size != SUPERBLOCK_SIZE)
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return FALSE;
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return TRUE;
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}
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/***********************************************************************
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* VOLUME_ReadCDSuperblock
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*/
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static enum fs_type VOLUME_ReadCDSuperblock( HANDLE handle, BYTE *buff )
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{
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int i;
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DWORD offs;
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/* Check UDF first as UDF and ISO9660 structures can coexist on the same medium
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* Starting from sector 16, we may find :
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* - a CD-ROM Volume Descriptor Set (ISO9660) containing one or more Volume Descriptors
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* - an Extended Area (UDF) -- [E] 2/8.3.1 and [U] 2.1.7
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* There is no explicit end so read 16 sectors and then give up */
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for( i=16; i<16+16; i++)
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{
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if (!VOLUME_ReadCDBlock(handle, buff, i*BLOCK_SIZE))
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continue;
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/* We are supposed to check "BEA01", "NSR0x" and "TEA01" IDs + verify tag checksum
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* but we assume the volume is well-formatted */
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if (!memcmp(&buff[1], "BEA01", 5)) return FS_UDF;
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}
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offs = VOLUME_FindCdRomDataBestVoldesc( handle );
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if (!offs) return FS_UNKNOWN;
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if (!VOLUME_ReadCDBlock(handle, buff, offs))
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return FS_ERROR;
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/* check for the iso9660 identifier */
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if (!memcmp(&buff[1], "CD001", 5)) return FS_ISO9660;
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return FS_UNKNOWN;
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}
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/**************************************************************************
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* UDF_Find_PVD
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* Find the Primary Volume Descriptor
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*/
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static BOOL UDF_Find_PVD( HANDLE handle, BYTE pvd[] )
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{
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unsigned int i;
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DWORD offset;
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INT locations[] = { 256, -1, -257, 512 };
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for(i=0; i<ARRAY_SIZE(locations); i++)
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{
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if (!VOLUME_ReadCDBlock(handle, pvd, locations[i]*BLOCK_SIZE))
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return FALSE;
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/* Tag Identifier of Anchor Volume Descriptor Pointer is 2 -- [E] 3/10.2.1 */
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if (pvd[0]==2 && pvd[1]==0)
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{
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/* Tag location (Uint32) at offset 12, little-endian */
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offset = pvd[20 + 0];
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offset |= pvd[20 + 1] << 8;
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offset |= pvd[20 + 2] << 16;
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offset |= pvd[20 + 3] << 24;
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offset *= BLOCK_SIZE;
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if (!VOLUME_ReadCDBlock(handle, pvd, offset))
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return FALSE;
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/* Check for the Primary Volume Descriptor Tag Id -- [E] 3/10.1.1 */
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if (pvd[0]!=1 || pvd[1]!=0)
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return FALSE;
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/* 8 or 16 bits per character -- [U] 2.1.1 */
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if (!(pvd[24]==8 || pvd[24]==16))
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return FALSE;
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return TRUE;
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}
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}
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return FALSE;
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}
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/**************************************************************************
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* VOLUME_GetSuperblockLabel
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*/
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static void VOLUME_GetSuperblockLabel( struct volume *volume, HANDLE handle, const BYTE *superblock )
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{
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const BYTE *label_ptr = NULL;
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DWORD label_len;
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switch (volume->fs_type)
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{
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case FS_ERROR:
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label_len = 0;
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break;
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case FS_UNKNOWN:
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get_filesystem_label( volume );
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return;
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case FS_FAT1216:
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label_ptr = superblock + 0x2b;
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label_len = 11;
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break;
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case FS_FAT32:
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label_ptr = superblock + 0x47;
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label_len = 11;
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break;
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case FS_ISO9660:
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{
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BYTE ver = superblock[0x5a];
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if (superblock[0x58] == 0x25 && superblock[0x59] == 0x2f && /* Unicode ID */
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((ver == 0x40) || (ver == 0x43) || (ver == 0x45)))
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{ /* yippee, unicode */
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unsigned int i;
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for (i = 0; i < 16; i++)
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volume->label[i] = (superblock[40+2*i] << 8) | superblock[41+2*i];
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volume->label[i] = 0;
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while (i && volume->label[i-1] == ' ') volume->label[--i] = 0;
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return;
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}
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label_ptr = superblock + 40;
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label_len = 32;
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break;
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}
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case FS_UDF:
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{
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BYTE pvd[BLOCK_SIZE];
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if(!UDF_Find_PVD(handle, pvd))
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{
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label_len = 0;
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break;
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}
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/* [E] 3/10.1.4 and [U] 2.1.1 */
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if(pvd[24]==8)
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{
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label_ptr = pvd + 24 + 1;
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label_len = pvd[24+32-1];
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break;
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}
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else
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{
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unsigned int i;
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label_len = 1 + pvd[24+32-1];
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for (i = 0; i < label_len; i += 2)
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volume->label[i/2] = (pvd[24+1+i] << 8) | pvd[24+1+i+1];
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volume->label[label_len] = 0;
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return;
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}
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}
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}
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if (label_len) RtlMultiByteToUnicodeN( volume->label, sizeof(volume->label) - sizeof(WCHAR),
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&label_len, (const char *)label_ptr, label_len );
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label_len /= sizeof(WCHAR);
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volume->label[label_len] = 0;
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while (label_len && volume->label[label_len-1] == ' ') volume->label[--label_len] = 0;
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}
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/**************************************************************************
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* UDF_Find_FSD_Sector
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* Find the File Set Descriptor used to compute the serial of a UDF volume
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*/
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static int UDF_Find_FSD_Sector( HANDLE handle, BYTE block[] )
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{
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int i, PVD_sector, PD_sector, PD_length;
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if(!UDF_Find_PVD(handle,block))
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goto default_sector;
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/* Retrieve the tag location of the PVD -- [E] 3/7.2 */
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PVD_sector = block[12 + 0];
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PVD_sector |= block[12 + 1] << 8;
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PVD_sector |= block[12 + 2] << 16;
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PVD_sector |= block[12 + 3] << 24;
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/* Find the Partition Descriptor */
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for(i=PVD_sector+1; ; i++)
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{
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if(!VOLUME_ReadCDBlock(handle, block, i*BLOCK_SIZE))
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goto default_sector;
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/* Partition Descriptor Tag Id -- [E] 3/10.5.1 */
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if(block[0]==5 && block[1]==0)
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break;
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/* Terminating Descriptor Tag Id -- [E] 3/10.9.1 */
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if(block[0]==8 && block[1]==0)
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goto default_sector;
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}
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/* Find the partition starting location -- [E] 3/10.5.8 */
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PD_sector = block[188 + 0];
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PD_sector |= block[188 + 1] << 8;
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PD_sector |= block[188 + 2] << 16;
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PD_sector |= block[188 + 3] << 24;
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/* Find the partition length -- [E] 3/10.5.9 */
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PD_length = block[192 + 0];
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PD_length |= block[192 + 1] << 8;
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PD_length |= block[192 + 2] << 16;
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PD_length |= block[192 + 3] << 24;
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for(i=PD_sector; i<PD_sector+PD_length; i++)
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{
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if(!VOLUME_ReadCDBlock(handle, block, i*BLOCK_SIZE))
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goto default_sector;
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/* File Set Descriptor Tag Id -- [E] 3/14.1.1 */
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if(block[0]==0 && block[1]==1)
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return i;
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}
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default_sector:
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WARN("FSD sector not found, serial may be incorrect\n");
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return 257;
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}
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/**************************************************************************
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* VOLUME_GetSuperblockSerial
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*/
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static void VOLUME_GetSuperblockSerial( struct volume *volume, HANDLE handle, const BYTE *superblock )
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{
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int FSD_sector;
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BYTE block[BLOCK_SIZE];
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switch (volume->fs_type)
|
||||
{
|
||||
case FS_ERROR:
|
||||
break;
|
||||
case FS_UNKNOWN:
|
||||
get_filesystem_serial( volume );
|
||||
break;
|
||||
case FS_FAT1216:
|
||||
volume->serial = GETLONG( superblock, 0x27 );
|
||||
break;
|
||||
case FS_FAT32:
|
||||
volume->serial = GETLONG( superblock, 0x43 );
|
||||
break;
|
||||
case FS_UDF:
|
||||
FSD_sector = UDF_Find_FSD_Sector(handle, block);
|
||||
if (!VOLUME_ReadCDBlock(handle, block, FSD_sector*BLOCK_SIZE))
|
||||
break;
|
||||
superblock = block;
|
||||
/* fallthrough */
|
||||
case FS_ISO9660:
|
||||
{
|
||||
BYTE sum[4];
|
||||
int i;
|
||||
|
||||
sum[0] = sum[1] = sum[2] = sum[3] = 0;
|
||||
for (i = 0; i < 2048; i += 4)
|
||||
{
|
||||
/* DON'T optimize this into DWORD !! (breaks overflow) */
|
||||
sum[0] += superblock[i+0];
|
||||
sum[1] += superblock[i+1];
|
||||
sum[2] += superblock[i+2];
|
||||
sum[3] += superblock[i+3];
|
||||
}
|
||||
/*
|
||||
* OK, another braindead one... argh. Just believe it.
|
||||
* Me$$ysoft chose to reverse the serial number in NT4/W2K.
|
||||
* It's true and nobody will ever be able to change it.
|
||||
*/
|
||||
if ((GetVersion() & 0x80000000) || volume->fs_type == FS_UDF)
|
||||
volume->serial = (sum[3] << 24) | (sum[2] << 16) | (sum[1] << 8) | sum[0];
|
||||
else
|
||||
volume->serial = (sum[0] << 24) | (sum[1] << 16) | (sum[2] << 8) | sum[3];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/**************************************************************************
|
||||
* VOLUME_GetAudioCDSerial
|
||||
*/
|
||||
static DWORD VOLUME_GetAudioCDSerial( const CDROM_TOC *toc )
|
||||
{
|
||||
DWORD serial = 0;
|
||||
int i;
|
||||
|
||||
for (i = 0; i <= toc->LastTrack - toc->FirstTrack; i++)
|
||||
serial += ((toc->TrackData[i].Address[1] << 16) |
|
||||
(toc->TrackData[i].Address[2] << 8) |
|
||||
toc->TrackData[i].Address[3]);
|
||||
|
||||
/*
|
||||
* dwStart, dwEnd collect the beginning and end of the disc respectively, in
|
||||
* frames.
|
||||
* There it is collected for correcting the serial when there are less than
|
||||
* 3 tracks.
|
||||
*/
|
||||
if (toc->LastTrack - toc->FirstTrack + 1 < 3)
|
||||
{
|
||||
DWORD dwStart = FRAME_OF_TOC(toc, toc->FirstTrack);
|
||||
DWORD dwEnd = FRAME_OF_TOC(toc, toc->LastTrack + 1);
|
||||
serial += dwEnd - dwStart;
|
||||
}
|
||||
return serial;
|
||||
}
|
||||
|
||||
|
||||
/* create the disk device for a given volume */
|
||||
static NTSTATUS create_disk_device( enum device_type type, struct disk_device **device_ret )
|
||||
{
|
||||
|
|
@ -473,6 +990,72 @@ static struct volume *find_matching_volume( const char *udi, const char *device,
|
|||
return NULL;
|
||||
}
|
||||
|
||||
static BOOL get_volume_device_info( struct volume *volume )
|
||||
{
|
||||
const char *unix_device = volume->device->unix_device;
|
||||
ANSI_STRING unix_name;
|
||||
UNICODE_STRING nt_name;
|
||||
OBJECT_ATTRIBUTES attr;
|
||||
HANDLE handle;
|
||||
NTSTATUS ret;
|
||||
CDROM_TOC toc;
|
||||
DWORD size;
|
||||
BYTE superblock[SUPERBLOCK_SIZE];
|
||||
IO_STATUS_BLOCK io;
|
||||
|
||||
if (!unix_device)
|
||||
return FALSE;
|
||||
|
||||
RtlInitAnsiString( &unix_name, unix_device );
|
||||
if ((ret = wine_unix_to_nt_file_name( &unix_name, &nt_name )))
|
||||
{
|
||||
ERR("Failed to convert %s to NT, status %#x\n", debugstr_a(unix_device), ret);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
InitializeObjectAttributes( &attr, &nt_name, OBJ_CASE_INSENSITIVE, 0, NULL );
|
||||
if ((ret = NtOpenFile( &handle, GENERIC_READ | SYNCHRONIZE, &attr, &io, FILE_SHARE_READ | FILE_SHARE_WRITE,
|
||||
FILE_NON_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT )))
|
||||
{
|
||||
WARN("Failed to open %s, status %#x\n", debugstr_a(unix_device), ret);
|
||||
RtlFreeUnicodeString( &nt_name );
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (DeviceIoControl( handle, IOCTL_CDROM_READ_TOC, NULL, 0, &toc, sizeof(toc), &size, 0 ))
|
||||
{
|
||||
if (!(toc.TrackData[0].Control & 0x04)) /* audio track */
|
||||
{
|
||||
static const WCHAR audiocdW[] = {'A','u','d','i','o',' ','C','D',0};
|
||||
TRACE( "%s: found audio CD\n", debugstr_a(unix_device) );
|
||||
lstrcpynW( volume->label, audiocdW, ARRAY_SIZE(volume->label) );
|
||||
volume->serial = VOLUME_GetAudioCDSerial( &toc );
|
||||
volume->fs_type = FS_ISO9660;
|
||||
CloseHandle( handle );
|
||||
return TRUE;
|
||||
}
|
||||
volume->fs_type = VOLUME_ReadCDSuperblock( handle, superblock );
|
||||
}
|
||||
else
|
||||
{
|
||||
volume->fs_type = VOLUME_ReadFATSuperblock( handle, superblock );
|
||||
if (volume->fs_type == FS_UNKNOWN) volume->fs_type = VOLUME_ReadCDSuperblock( handle, superblock );
|
||||
}
|
||||
|
||||
TRACE( "%s: found fs type %d\n", debugstr_a(unix_device), volume->fs_type );
|
||||
if (volume->fs_type == FS_ERROR)
|
||||
{
|
||||
CloseHandle( handle );
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
VOLUME_GetSuperblockLabel( volume, handle, superblock );
|
||||
VOLUME_GetSuperblockSerial( volume, handle, superblock );
|
||||
|
||||
CloseHandle( handle );
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/* change the information for an existing volume */
|
||||
static NTSTATUS set_volume_info( struct volume *volume, struct dos_drive *drive, const char *device,
|
||||
const char *mount_point, enum device_type type, const GUID *guid )
|
||||
|
|
@ -506,6 +1089,21 @@ static NTSTATUS set_volume_info( struct volume *volume, struct dos_drive *drive,
|
|||
disk_device->unix_device = strdupA( device );
|
||||
disk_device->unix_mount = strdupA( mount_point );
|
||||
|
||||
if (!get_volume_device_info( volume ))
|
||||
{
|
||||
if (volume->device->type == DEVICE_CDROM)
|
||||
volume->fs_type = FS_ISO9660;
|
||||
else if (volume->device->type == DEVICE_DVD)
|
||||
volume->fs_type = FS_UDF;
|
||||
else
|
||||
volume->fs_type = FS_UNKNOWN;
|
||||
|
||||
get_filesystem_label( volume );
|
||||
get_filesystem_serial( volume );
|
||||
}
|
||||
|
||||
TRACE("fs_type %#x, label %s, serial %08x\n", volume->fs_type, debugstr_w(volume->label), volume->serial);
|
||||
|
||||
if (guid && memcmp( &volume->guid, guid, sizeof(volume->guid) ))
|
||||
{
|
||||
volume->guid = *guid;
|
||||
|
|
|
|||
Loading…
Reference in New Issue