tinyfs man page on Inferno

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TINYFS(3)							     TINYFS(3)

NAME
       tinyfs - file system for miniscule devices

SYNOPSIS
       bind -c #Fname /nvfs

DESCRIPTION
       Tinyfs  provides	 file  system  access  to the contents of low-capacity
       devices, ranging from several hundred bytes (at least 144 bytes) to  at
       most  the  order	 of a kilobyte.	 It is provided to support file system
       access to small non-volatile memories, as for  instance	are  found  in
       some real-time clock chips, where IDs, keys, PINs, certificates and the
       like might be stored by either client or server.

       The file system has only one directory, its  root,  which  can  contain
       only  files.   Once  created, a write can only append to a file; random
       updates are not allowed, although  the  file  could  be	truncated  and
       rewritten.

       The device specifier following the #F device name is the name of a file
       in /dev on which the tiny file system will live.	 For instance, #Fnvram
       refers  to  /dev/nvram.	 The device must allow seek and write.	During
       the attach, the system scans  the  device,  checking  the  file	system
       structure  by building a table of files, and checking a checksum stored
       in each block; inconsistent structure is reinitialised, and thus a pre‐
       viously	unused device will emerge correctly formatted as an empty tiny
       file system.

FILES
       /nvfs  conventional mount point used by init(8)

SOURCE
       /os/port/devtinyfs.c

								     TINYFS(3)
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