diff options
Diffstat (limited to 'Documentation/filesystems/adfs.txt')
| -rw-r--r-- | Documentation/filesystems/adfs.txt | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/Documentation/filesystems/adfs.txt b/Documentation/filesystems/adfs.txt deleted file mode 100644 index 5949766353f7..000000000000 --- a/Documentation/filesystems/adfs.txt +++ /dev/null @@ -1,75 +0,0 @@ -Mount options for ADFS ----------------------- - - uid=nnn All files in the partition will be owned by - user id nnn. Default 0 (root). - gid=nnn All files in the partition will be in group - nnn. Default 0 (root). - ownmask=nnn The permission mask for ADFS 'owner' permissions - will be nnn. Default 0700. - othmask=nnn The permission mask for ADFS 'other' permissions - will be nnn. Default 0077. - ftsuffix=n When ftsuffix=0, no file type suffix will be applied. - When ftsuffix=1, a hexadecimal suffix corresponding to - the RISC OS file type will be added. Default 0. - -Mapping of ADFS permissions to Linux permissions ------------------------------------------------- - - ADFS permissions consist of the following: - - Owner read - Owner write - Other read - Other write - - (In older versions, an 'execute' permission did exist, but this - does not hold the same meaning as the Linux 'execute' permission - and is now obsolete). - - The mapping is performed as follows: - - Owner read -> -r--r--r-- - Owner write -> --w--w---w - Owner read and filetype UnixExec -> ---x--x--x - These are then masked by ownmask, eg 700 -> -rwx------ - Possible owner mode permissions -> -rwx------ - - Other read -> -r--r--r-- - Other write -> --w--w--w- - Other read and filetype UnixExec -> ---x--x--x - These are then masked by othmask, eg 077 -> ----rwxrwx - Possible other mode permissions -> ----rwxrwx - - Hence, with the default masks, if a file is owner read/write, and - not a UnixExec filetype, then the permissions will be: - - -rw------- - - However, if the masks were ownmask=0770,othmask=0007, then this would - be modified to: - -rw-rw---- - - There is no restriction on what you can do with these masks. You may - wish that either read bits give read access to the file for all, but - keep the default write protection (ownmask=0755,othmask=0577): - - -rw-r--r-- - - You can therefore tailor the permission translation to whatever you - desire the permissions should be under Linux. - -RISC OS file type suffix ------------------------- - - RISC OS file types are stored in bits 19..8 of the file load address. - - To enable non-RISC OS systems to be used to store files without losing - file type information, a file naming convention was devised (initially - for use with NFS) such that a hexadecimal suffix of the form ,xyz - denoted the file type: e.g. BasicFile,ffb is a BASIC (0xffb) file. This - naming convention is now also used by RISC OS emulators such as RPCEmu. - - Mounting an ADFS disc with option ftsuffix=1 will cause appropriate file - type suffixes to be appended to file names read from a directory. If the - ftsuffix option is zero or omitted, no file type suffixes will be added. |