I have a semi-functional (getting ntfs device name eludes me) implementation of blkid that I would be willing to toybox if there is any interest (Its not on the list AFAICT, so I will be brief)
The implementation is as follows: 1. read 65k buffer from file (reiserfs and others have superblock starting at 64k) 2. perform switch cases @ 0 offset to compare to many magics (0 is a fairly common offset) **Note: the switch case really provides no benefit over if-else in this situation since the Magic values are too far apart to be optimized into a jump table. I can change this for uniformity if desired. 3. Then go through the rest of the fs types and check for #defined magic @ #defined offset(s) 4. If a match is found it returns the result of print_fsinfo(char *fstype, int UUID_offset, int UUID_type, int name_offset, int name_len) where the UUID_offset, UUID_type, name_offset, name_len are also #defined in the header for that fs type. I know many people only want to get the fs type (for mount) instead of the full blkid output. Does toybox have some kind of facility for setting function pointers based on the name it is called with or a way to get the current toy-command name to use for conditional code? R, Brad Conroy
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