hjfs – file server maintenance|
create path uid gid perm [lad]
newuser name [options]
debug–chdeind file [offset value]
debug–getblk file [blk|start end]
The following commands should be written to the console of an
hjfs(4) file server. |
Allow disables permission checking and allows changing file ownership (see chgrp(1)). This may help in initializing a file system. Use this with caution.
Chatty enables chatty 9p.
Create creates a file on the current file system. Uid and gid are names or numbers from /adm/users. Perm is the low 9 bits of the permission mode of the file, in octal. An optional final l, a, or d creates a locked file, append–only file, or directory.
Df prints the number of free, used and total blocks/megabytes. It scans the block table and can be slow on large hard disks.
Disallow restores permission checking back to normal after a file system has been initialized.
Dump immediately starts a dump.
Echo expects the argument on or off. On causes all executed commands to be printed on the system console. Off reverses the effects of on.
Halt exits the program.
Newuser requires a name argument. With no options it adds user
name, with group leader name, to /adm/users and makes the directory
/usr/name owned by user and group name. The options are
After a successful newuser command the file server overwrites /adm/users to reflect the internal state of the user table.
Users reads the contents of file /adm/users to initialize the file server's internal representation of the users structure.
Sync writes dirty blocks in memory to the magnetic disk cache.
Note: Debug commands operate on internal data structures; they are inherently dangerous and can cause file system damage.
Debug–chdeind changes the value of the byte at the specified offset in the in–memory directory entry and prints the old value. Dangerous if used carelessly.
Debug–deind requires a file argument. It prints the directory entry of file.
Debug–getblk prints the physical blocks of file corresponding to
the logical block blk or the logical blocks between start and
Check disk usage (output appears on the system console).|
Debug–chdeind should perhaps be less crazy and have a portable