diff options
Diffstat (limited to 'fs/ntfs/super.c')
| -rw-r--r-- | fs/ntfs/super.c | 56 |
1 files changed, 54 insertions, 2 deletions
diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c index d7dcb127f..7f2a7fe86 100644 --- a/fs/ntfs/super.c +++ b/fs/ntfs/super.c @@ -4,6 +4,7 @@ * Copyright (C) 1995-1997, 1999 Martin von Löwis * Copyright (C) 1996-1997 Régis Duchesne * Copyright (C) 1999 Steve Dodd + * Copyright (C) 2000 Anton Altparmakov */ #include "ntfstypes.h" @@ -62,7 +63,10 @@ int ntfs_init_volume(ntfs_volume *vol,char *boot) vol->at_standard_information=0x10; vol->at_attribute_list=0x20; vol->at_file_name=0x30; + vol->at_volume_version=0x40; vol->at_security_descriptor=0x50; + vol->at_volume_name=0x60; + vol->at_volume_information=0x70; vol->at_data=0x80; vol->at_index_root=0x90; vol->at_index_allocation=0xA0; @@ -141,8 +145,18 @@ process_attrdef(ntfs_inode* attrdef,ntfs_u8* def) }else if(ntfs_ua_strncmp(name,"$FILE_NAME",64)==0){ vol->at_file_name=type; check_type=0x30; + }else if(ntfs_ua_strncmp(name,"$VOLUME_VERSION",64)==0){ + vol->at_volume_version=type; + check_type=0x40; }else if(ntfs_ua_strncmp(name,"$SECURITY_DESCRIPTOR",64)==0){ - vol->at_file_name=type; + vol->at_security_descriptor=type; + check_type=0x50; + }else if(ntfs_ua_strncmp(name,"$VOLUME_NAME",64)==0){ + vol->at_volume_name=type; + check_type=0x60; + }else if(ntfs_ua_strncmp(name,"$VOLUME_INFORMATION",64)==0){ + vol->at_volume_information=type; + check_type=0x70; }else if(ntfs_ua_strncmp(name,"$DATA",64)==0){ vol->at_data=type; check_type=0x80; @@ -158,6 +172,7 @@ process_attrdef(ntfs_inode* attrdef,ntfs_u8* def) }else if(ntfs_ua_strncmp(name,"$SYMBOLIC_LINK",64)==0 || ntfs_ua_strncmp(name,"$REPARSE_POINT",64)==0){ vol->at_symlink=type; + check_type=0xC0; } if(check_type && check_type!=type){ ntfs_error("Unexpected type %x for %x\n",type,check_type); @@ -196,10 +211,32 @@ ntfs_init_attrdef(ntfs_inode* attrdef) return error; } +/* ntfs_get_version will determine the NTFS version of the + volume and will return the version in a BCD format, with + the MSB being the major version number and the LSB the + minor one. Otherwise return <0 on error. + Example: version 3.1 will be returned as 0x0301. + This has the obvious limitation of not coping with version + numbers above 0x80 but that shouldn't be a problem... */ +int ntfs_get_version(ntfs_inode* volume) +{ + ntfs_attribute *volinfo; + int i; + + volinfo = ntfs_find_attr(volume, volume->vol->at_volume_information, 0); + if (!volinfo) + return -EINVAL; + if (!volinfo->resident) { + ntfs_error("Volume information attribute is not resident!\n"); + return -EINVAL; + } + return ((ntfs_u8*)volinfo->d.data)[8] << 8 | ((ntfs_u8*)volinfo->d.data)[9]; +} + int ntfs_load_special_files(ntfs_volume *vol) { int error; - ntfs_inode upcase,attrdef; + ntfs_inode upcase, attrdef, volume; vol->mft_ino=(ntfs_inode*)ntfs_calloc(3*sizeof(ntfs_inode)); error=ENOMEM; @@ -232,6 +269,21 @@ int ntfs_load_special_files(ntfs_volume *vol) error=ntfs_init_attrdef(&attrdef); ntfs_clear_inode(&attrdef); if(error)return error; + + /* Check for NTFS version and if Win2k version (ie. 3.0+) + do not allow write access since the driver write support + is broken, especially for Win2k. */ + ntfs_debug(DEBUG_BSD,"Going to load VOLUME\n"); + error = ntfs_init_inode(&volume,vol,FILE_VOLUME); + if (error) return error; + if ((error = ntfs_get_version(&volume)) >= 0x0300) { + NTFS_SB(vol)->s_flags |= MS_RDONLY; + ntfs_error("Warning! NTFS volume version is Win2k+: Mounting read-only\n"); + } + ntfs_clear_inode(&volume); + if (error < 0) return error; + ntfs_debug(DEBUG_BSD, "NTFS volume is version %d.%d\n", error >> 8, error & 0xff); + return 0; } |