Add code to the boot blocks to allow the user to place default boot strings
on block 1 of the disk (2nd block), should the correct magic numbers be present.
If the correct options are used it will 'delete' the name used from block1,
thereby assuring that if the boot fails it won't be stuck in an infinite loop.
the boot strings are set by the utility "nextboot"
(not yet checked in, but being tested.)
By default these changes should have no effect on existing installations
and if compiled without the NAMEBLOCK option should be essentially identical
to the old ones.
based on the HD64570 chip. Both the 1 and 2 port cards is supported.
Line speeds of up to 2Mbps is possible. At this speed about 95% of the
bandwidth is usable with 486DX processors.
The standard FreeBSD sppp code is used for the link level layer. The
default protocol used is PPP. The Cisco HDLC protocol can be used by
adding "link2" to the ifconfig line in /etc/sysconfig or where ever
ifconfig is run.
At the moment only the X.21 interface is tested. The others may need
tweaks to the clock selection code.
Add a few strategic screen clears.
Do a lot less wasted screen I/O in restoring screen contents that don't need
restoring.
Use tar instead of cp to back up /etc in installUpdate.
Don't panic when upgrade shell exits.
to 1K to avoid waiting too long between 2 progress reports in the case of a
slow transfer.
Move the signal()/setitimer() code just before the read loop because the
ftpio library set and reset the timer internally.
easier to use in mixed environments:
- Add three new members to the request structure:
- a filename specification
- a database type specification
- a system byte prder specification
These allow the client to ask the server for a particular type of
database (Berkeley DB hash/btree/recno, GNU GDBM, dbm, ndbm, etc...)
and get back a meaningful error if the server doesn't support it.
The byte order spec is needed if the database type is byte order
sensntive. You don't, for example, want to read an ndbm database
from a big endian machine on a little endian machine (the ndbm code
will explode). The filename spec lets the client handle things like
ndbm which uses two seperate files per database (foo.dir and foo.pag).
The client can ask for each half, one at a time.
- Add a list of database types and byte order values. Each list has
a wildcard 'ANY' entry which lets the client ask for whatever the
server supports. (XFR_ENDIAN_ANY is useful with the Berkeley DB hash
method for instance, since it isn't byte order sensitive.)
- Add two newserver failure codes: XFR_DB_TYPE_MISMATCH and
XFR_DB_ENDIAN_MISMATCH. The server uses these to tell the client
that it doesn't support the requested type/byte order.
These changes were made at the suggestion of Thorsten Kukuk, the
current maintainer of the Linux ypserv distribution. This allows
Linux and FreeBSD NIS servers to use the same ypxfrd protocol and
avoid accidentally exchanging incompatible map files.
to information from a single process causes hangs. Specifically, this
fixes problems (hangs) with concurrent ps commands, when the system is under
heavy memory load.
Reviewed by: davidg
