Module: wine Branch: master Commit: c5d63b55352f85a56e63dc0aaf5f74084de1403a URL: http://source.winehq.org/git/wine.git/?a=commit;h=c5d63b55352f85a56e63dc0aaf...
Author: Alexandre Julliard julliard@winehq.org Date: Sat Dec 8 19:53:24 2007 +0100
kernel32: Read label and serial from the filesystem when the device is accessible but unknown.
---
dlls/kernel32/volume.c | 109 ++++++++++++++++++++++++++--------------------- 1 files changed, 60 insertions(+), 49 deletions(-)
diff --git a/dlls/kernel32/volume.c b/dlls/kernel32/volume.c index 7f07f56..1869d0d 100644 --- a/dlls/kernel32/volume.c +++ b/dlls/kernel32/volume.c @@ -161,6 +161,52 @@ static BOOL open_device_root( LPCWSTR root, HANDLE *handle ) return TRUE; }
+/* get the label by reading it from a file at the root of the filesystem */ +static void get_filesystem_label( const WCHAR *device, WCHAR *label, DWORD len ) +{ + HANDLE handle; + WCHAR labelW[] = {'A',':','\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0}; + + labelW[0] = device[4]; + handle = CreateFileW( labelW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, + OPEN_EXISTING, 0, 0 ); + if (handle != INVALID_HANDLE_VALUE) + { + char buffer[256], *p; + DWORD size; + + if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0; + CloseHandle( handle ); + p = buffer + size; + while (p > buffer && (p[-1] == ' ' || p[-1] == '\r' || p[-1] == '\n')) p--; + *p = 0; + if (!MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, label, len )) + label[len-1] = 0; + } + else label[0] = 0; +} + +/* get the serial number by reading it from a file at the root of the filesystem */ +static DWORD get_filesystem_serial( const WCHAR *device ) +{ + HANDLE handle; + WCHAR serialW[] = {'A',':','\','.','w','i','n','d','o','w','s','-','s','e','r','i','a','l',0}; + + serialW[0] = device[4]; + handle = CreateFileW( serialW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, + OPEN_EXISTING, 0, 0 ); + if (handle != INVALID_HANDLE_VALUE) + { + char buffer[32]; + DWORD size; + + if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0; + CloseHandle( handle ); + buffer[size] = 0; + return strtoul( buffer, NULL, 16 ); + } + else return 0; +}
/* fetch the type of a drive from the registry */ static UINT get_registry_drive_type( const WCHAR *root ) @@ -256,10 +302,11 @@ static enum fs_type VOLUME_ReadFATSuperblock( HANDLE handle, BYTE *buff )
/* try a fixed disk, with a FAT partition */ if (SetFilePointer( handle, 0, NULL, FILE_BEGIN ) != 0 || - !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) || - size != SUPERBLOCK_SIZE) + !ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL )) return FS_ERROR;
+ if (size < SUPERBLOCK_SIZE) return FS_UNKNOWN; + /* FIXME: do really all FAT have their name beginning with * "FAT" ? (At least FAT12, FAT16 and FAT32 have :) */ @@ -332,7 +379,7 @@ static enum fs_type VOLUME_ReadCDSuperblock( HANDLE handle, BYTE *buff ) /************************************************************************** * VOLUME_GetSuperblockLabel */ -static void VOLUME_GetSuperblockLabel( enum fs_type type, const BYTE *superblock, +static void VOLUME_GetSuperblockLabel( const WCHAR *device, enum fs_type type, const BYTE *superblock, WCHAR *label, DWORD len ) { const BYTE *label_ptr = NULL; @@ -341,9 +388,11 @@ static void VOLUME_GetSuperblockLabel( enum fs_type type, const BYTE *superblock switch(type) { case FS_ERROR: - case FS_UNKNOWN: label_len = 0; break; + case FS_UNKNOWN: + get_filesystem_label( device, label, len ); + return; case FS_FAT1216: label_ptr = superblock + 0x2b; label_len = 11; @@ -384,13 +433,14 @@ static void VOLUME_GetSuperblockLabel( enum fs_type type, const BYTE *superblock /************************************************************************** * VOLUME_GetSuperblockSerial */ -static DWORD VOLUME_GetSuperblockSerial( enum fs_type type, const BYTE *superblock ) +static DWORD VOLUME_GetSuperblockSerial( const WCHAR *device, enum fs_type type, const BYTE *superblock ) { switch(type) { case FS_ERROR: - case FS_UNKNOWN: break; + case FS_UNKNOWN: + return get_filesystem_serial( device ); case FS_FAT1216: return GETLONG( superblock, 0x27 ); case FS_FAT32: @@ -519,8 +569,8 @@ BOOL WINAPI GetVolumeInformationW( LPCWSTR root, LPWSTR label, DWORD label_len, TRACE( "%s: found fs type %d\n", debugstr_w(device), type ); if (type == FS_ERROR) return FALSE;
- if (label && label_len) VOLUME_GetSuperblockLabel( type, superblock, label, label_len ); - if (serial) *serial = VOLUME_GetSuperblockSerial( type, superblock ); + if (label && label_len) VOLUME_GetSuperblockLabel( device, type, superblock, label, label_len ); + if (serial) *serial = VOLUME_GetSuperblockSerial( device, type, superblock ); goto fill_fs_info; } else TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() ); @@ -544,47 +594,8 @@ BOOL WINAPI GetVolumeInformationW( LPCWSTR root, LPWSTR label, DWORD label_len, break; }
- if (label && label_len) - { - WCHAR labelW[] = {'A',':','\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0}; - - labelW[0] = device[4]; - handle = CreateFileW( labelW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, - OPEN_EXISTING, 0, 0 ); - if (handle != INVALID_HANDLE_VALUE) - { - char buffer[256], *p; - DWORD size; - - if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0; - CloseHandle( handle ); - p = buffer + size; - while (p > buffer && (p[-1] == ' ' || p[-1] == '\r' || p[-1] == '\n')) p--; - *p = 0; - if (!MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, label, label_len )) - label[label_len-1] = 0; - } - else label[0] = 0; - } - if (serial) - { - WCHAR serialW[] = {'A',':','\','.','w','i','n','d','o','w','s','-','s','e','r','i','a','l',0}; - - serialW[0] = device[4]; - handle = CreateFileW( serialW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, - OPEN_EXISTING, 0, 0 ); - if (handle != INVALID_HANDLE_VALUE) - { - char buffer[32]; - DWORD size; - - if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0; - CloseHandle( handle ); - buffer[size] = 0; - *serial = strtoul( buffer, NULL, 16 ); - } - else *serial = 0; - } + if (label && label_len) get_filesystem_label( device, label, label_len ); + if (serial) *serial = get_filesystem_serial( device );
fill_fs_info: /* now fill in the information that depends on the file system type */