MFSYS(4) —
NAME
mfsys − file format
SYNOPSIS
mfsys
DESCRIPTION
The mfsys file contains configuration information for file system types that are to be included in the next system kernel to be built. It is included in the directory /etc/conf/cf.d, and includes a one-line description of each file system type. The mfsys file is coalesced from component files in the directory /etc/conf/mfsys.d. Each line contains the following whitespace-separated fields:
1. name: This field contains the internal name for the file system type (e.g., S51K, DUFST). This name is no more than 32 characters long, and by convention is composed of uppercase alphanumeric characters.
2. prefix: The prefix in this field is the string prepended to the fstypsw handler functions defined for this file system type (e.g., s5, du). The prefix must be no more that 8 characters long.
3. flags: The flags field contains a hex number of the form "0xNN" to be used in populating the fsinfo data structure table entry for this file system type.
4. notify flags: The notify flags field contains a hex number of the form "0xNN" to be used in population the fsinfo data structure table entry for this file system type.
5. function bitstring: The function bitstring is a string of 28 0’s and 1’s. Each file system type potentially defines 28 functions to populate the fstypsw data structure table entry for itself. All file system types do not supply all the functions in this table, however, and this bitstring is used to indicate which of the functions are present and which are absent. A ’1’ in this string indicates that a function has been supplied, and a ’0’ indicates that a function has not been supplied. Successive characters in the string represent successive elements of the fstypsw data structure, with the first entry in this data structure represented by the rightmost character in the string.
SEE ALSO
sfsys(4).
idinstall(1M), idbuild(1M) in the INTERACTIVE UNIX System User’s/System Administrator’s Reference Manual.
\*U — Version 1.0