+Sat Jun 23 22:12:48 1990 Jan-Simon Pendry (jsp at beauty)
+
+ * Release 5.2 for Berkeley.
+
+ * (*) Re-organised source code layout. Now much more complicated.
+
+ * (map.c) code which flushed the kernel name cache is not really
+ needed now that the modify times on the automount directories are
+ correctly updated so ifdef the whole lot. Remove later...
+
+ * (map.c) make sure that the automount directories modify times
+ are updated when a change occurs so that the nfs client code can
+ decide when to update its name cache.
+
+ * (srvr_nfs.c) fixed bug which caused mounted filesystems to
+ appear down when they were up.
+
+ * YP becomes NIS.
+
+Mon May 28 19:50:34 1990 Jan-Simon Pendry (jsp at achilles)
+
+ * (amd.tex) substantially updated with more explanation of the
+ theory and more examples.
+
+ * (nfs_stubs.c) statfs now claims to have a single used block.
+ Avoids ambiguity between 100% and 0% full.
+
+ * (nfs_stubs.c) changed to allow the size of symlinks optionally
+ to be accurate wrt the length of the string returned. Optional
+ because it is cheaper to ignore the length when doing a getattr
+ and just send any length for the readlink. However, this breaks
+ on some systems (e.g. Ultrix).
+
+ * (mount_fs.c) automount points get marked type "nfs" instead of
+ "ignore". This is to fix an interaction with getwd(). Can go
+ away when getwd() gets re-written. Really only applies to SunOS4
+ but change applies to everything to keep consistent across platforms.
+
+ * (mount_fs.c) abstracted out mount options into a table and
+ corresponding loop.
+
+ * (srvr_nfs.c) make sure portmap information is available when
+ needed, not just after a ping has succeeded. This needed changing
+ after the ping algorithm got changed.
+
+ * (mntfs.c) fixed incorrect reference to mf_error instead of mf_flags.
+
+ * (nfs_start.c) keep track of number of fds in use, so don't run
+ select on system maximum (which is bad news if you have a large
+ system maximum).
+
+ * (host_ops.c) new NFS tree mount filesystem type (ala Sun -hosts).
+
+ * (nfs_ops.c) abstracted out NFS mount code to support host_ops.
+
+ * (afs_ops.c) dfs_readlink now returns the am_node, instead of the
+ link. This allows getattr to return the correct set of attributes
+ so keeping Ultrix happy.
+
+ * (afs_ops.c) Make certain the hostname field given to mount()
+ does not get too long - otherwise random EINVAL errors occur.
+
+ * Putting closing comments on all #endif's
+
+Sun May 13 16:07:21 1990 Jan-Simon Pendry (jsp at achilles)
+
+ * (srvr_nfs.c) second rewrite of NFS ping algorithm.
+
+Sun Apr 29 21:12:33 1990 Jan-Simon Pendry (jsp at achilles)
+
+ * (nfs_stubs.c) re-arranged readlink code to avoid need to
+ pre-mount a direct filesystem whenever possible.
+
+ * (host_ops.c) finally incorporated new module to support /net
+ mount point.
+
+Sat Mar 24 13:18:47 1990 Jan-Simon Pendry (jsp at achilles)
+
+ * (nfs_stubs.c) workaround added to rename entry point to avoid
+ arguments with NFS client code.
+
+ * (srvr_nfs.c) changed the way NFS pings are done and cleaned up
+ the process for deciding when a server is up or down. Now there
+ is just a simple time limit on a reply from the server. The limit
+ is adjusted depending on whether the state of the server is known.
+
+ * (opts.c) fixed bug with ${var/} expansion et al. Added ${varN}
+ N = 0..7 for use as scratch variables.
+
+ * (mntfs.c) fixed bug in dup_mntfs().
+
+Thu Jan 11 16:56:41 1990 Jan-Simon Pendry (jsp at achilles)
+
+ * Release 5.1c.
+
+ * (amq*) has new options. -f flushes the map cache and -m prints
+ information about mounted filesystem and fileservers.
+
+Tue Jan 2 14:44:21 1990 Jan-Simon Pendry (jsp at achilles)
+
+ * (util.c) am_mounted() patches the path for "direct" mounted
+ filesystems - cosmetic.
+
+ * (afs_ops.c) when possible sets a small kernel attribute cache
+ timeout on the automount points.
+
+ * (nfs_stubs.c) delete() and rmdir() operations implemented. Used
+ when a mount point is timed out so the kernel name cache gets to
+ know about the changes. Fixes most ESTALE errors.
+
+ * (nfs_stubs.c) New do_readlink() function added. This is used to
+ make sure that a filesystem is mounted at the time a link is read
+ in the case of "direct" mounts. Done so that the length of the
+ link is available when the initial getattr is done on the mountpoint.
+
+ * (sfs_ops.c) Changed implementation to avoid race conditions.
+ The link target is re-arranged so that sublink points to the
+ target and fs always points at ".".
+
+ * Fixed mount flag bug on Ultrix.
+
+ * Added support from Sjoerd Mullender for Alliant FX/4 and Encore
+ Multimax.
+
+Thu Dec 7 17:55:29 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (afs_ops.c) dfs_readlink now does a new_ttl on the node it
+ returns.
+
+ * (afs_ops.c) next_nonerror_node now implements the task after
+ which it is named.
+
+Tue Nov 28 17:20:52 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * Release 5.1b.
+
+ * (restart.c) Generates link nodes for any unrecognised filesystem
+ types and then marks them so that they are never deleted (since
+ they could never be automounted later).
+
+ * (os-*.h) Irrelevant #undef's deleted.
+
+ * (arch) Now knows about AIX on RTs.
+
+ * (amq.c) Rationalised the output. Now only gives you what you
+ asked for.
+
+ * (am.h) New macro: FSRV_ISDOWN(fs), which checks whether a
+ fileserver is down.
+
+ * (afs_ops.c) When a mount fails due to a timeout the underlying
+ filesystem is ripped away and replaced with an error fs. This
+ avoids the possibility of being left with a single error reference
+ to a valid mounted filesystem.
+
+Thu Nov 23 18:04:29 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (nfs_start.c) Re-order bootstrap sequence to avoid potential
+ deadlock if restart() ends up accessing one of the automount points.
+
+ * (amq.c) Don't produce default mount output if one of the -l, -x
+ or -D options was used.
+
+ * (umount_fs.c) Add alternative unmount routine for 4.4 BSD.
+
+Mon Nov 20 16:22:50 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (os-bsd44.h) Fixed redefinition of UMOUNT_FS.
+
+ * (info_ndbm.c) Added missing #include <sys/stat.h>.
+
+ * (mapc.c) Fixed typo in ifdef around gdbm config entry.
+
+Sat Nov 18 16:39:13 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (util.c) If "/" is automounted, make sure it is never timed out.
+
+ * (mtab.c) Missing clock invalidation added in read_mtab (from a file).
+
+ * (mntfs.c) realloc_mntfs simplified.
+
+ * (map.c) Closed a race condition during shutdown when second and
+ subsequent duplicate mounts were deleted prematurely.
+
+ * (afs_ops.c) Duplicate mounts are now given the correct return
+ code.
+
+Fri Nov 17 18:58:18 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * 5.1 Release.
+
+Thu Nov 16 17:57:02 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (mntfs.c) Make sure inherit mntfs structures are not cached
+ after last reference; otherwise a second reference to the
+ inherited filesystem will get stuck on the inherit rather than the
+ (now) fully mounted filesystem.
+
+ * (am.c, nfs_start.c) After forking the server, make sure the
+ parent does not exit until the automount points are mounted. This
+ allows a clean sequence during system startup.
+
+ * Initial port to 4.4 BSD. Several new configuration abstractions
+ were added to make this port possible.
+
+Thu Nov 9 21:42:14 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (afs_ops.c, opts.c) Added map logging to facilitate mount map
+ debugging without needing a -DDEBUG version of Amd.
+
+ * (afs_ops.c) Make sure the length of the fs_hostname mount
+ parameter does not exceed MAXHOSTNAMESZ.
+
+Wed Nov 8 13:44:02 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * Change the message log format to indicate the severity of the
+ message to allow simpler analysis of the log file.
+
+Tue Nov 7 14:11:36 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * 5.0 Patchlevel 11.
+
+ * (os-bsd44.h) Initial guess at 4.4 BSD definitions.
+
+ * (os-aux.h) Port for Macintosh II from Julian Onions.
+
+ * (amq.c) Output formats cleaned up. AMQ_MNTTREE is still broken
+ in amq_subr.c though.
+
+ * (afs_ops.c) If a mount timed out, for example an NFS server was
+ down at the time, it was possible for the error code to remain
+ unset thus jamming that mount node in a state from which it could
+ not recover. Just make sure that the mf_error field gets filled
+ in when an error occurs.
+
+ * (afs_ops.c) strsplit is run over /defaults to avoid problems
+ with whitespace creeping in.
+
+Sun Nov 5 11:50:51 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (util.c) am_mounted: Added missing initialisation of stats.s_mtime.
+
+Fri Nov 3 17:33:02 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * 5.0 Patchlevel 10.
+
+ * Changed the copyright.
+
+Thu Nov 2 17:07:53 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * 5.0 Patchlevel 9.
+
+ * (opts.c) new option syntax: == != :=
+
+ * (nfs_ops.c) Less caching of filehandles. Now cached errors are
+ discarded after use.
+
+ * (mtab.c) now attempts to deal with a lack of open file slots (ENFILE).
+
+ * (mount_fs.c) automount entries in the mount table now have a
+ dev= entry in the same way as NFS and UFS.
+
+ * (mntfs.c) mntfs nodes are now cached after the last reference
+ and discarded <ALLOWED_MOUNT_TIME> seconds later. This avoids
+ thrashing during a mount.
+
+ * (mapc.c) map default cache mode is now selected with
+ "mapdefault", not "default"
+
+ * (amd.tex) numerous clarifications. Still more work required...
+
+ * (amq_subr.c) now allows the -x option of amq to operate.
+
+ * (afs_ops.c) afs_bgmount now keeps track of which filesystem
+ needed retrying and ensures that the mount node in the
+ continuation correctly points at an unmounted filesystem. This
+ fixes a problem whereby a valid mounted filesystem could appear to
+ have failed to mount.
+
+ * Configure now gives more of a running commentary and checks
+ whether os-type and arch actually worked.
+
+ * Allow spurious ';'s in a mount location.
+
+Fri Oct 27 14:03:31 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * foo=blah changed to foo:=blah, foo==blah and foo!=blah.
+
+ * -l stderr changed to -l /dev/stderr.
+
+Thu Oct 19 15:34:28 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * 5.0 Patchlevel 6.
+
+ * LOG_INFO messages have been rationalised so that some
+ statistics, graphs and so on can be generated.
+
+ * Transaction ID's for RPC calls are now allocated by the
+ individual callers, rather than from a central pool. This
+ decreases the load on mount daemons and NFS servers since the
+ same XID is used for retries when needed.
+
+ * Many fine details of the new data structures have been changed.
+ Some areas have been optimized.
+
+Fri Oct 13 12:31:26 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * Restart code re-implemented to work with the new data structures.
+
+ * Fine tuning applied to new NFS server modeling code.
+
+Thu Oct 12 15:57:24 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * Added ${/var} and ${var/} variable expansions. The first gives
+ the "basename" component of the variable, the latter gives the
+ "dirname" component. Additionally, spurious /'s are deleted after
+ the variable expansions is complete.
+
+ * Added new -C option to allow the machine's cluster name to be
+ given to amd. ${cluster} fetches the value and can be used as
+ another selector.
+
+ * Broken the major data struct (am_node) into three layers:
+ am_node (one for each automount node), mntfs (one for each mounted
+ filesystem) and fserver (one for each file server). Machine
+ up/down state is maintained in the fserver layer. Filesystem
+ mount/unmount state is maintained in the mntfs layer. This change
+ fixes the last known major problem caused by the lack of a central
+ focus for filesystem and fileserver status. There is a dummy file
+ server layer for local filesystems (ufs, link, program, error).
+
+Tue Oct 10 11:15:42 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * 5.0 Patchlevel 5.
+
+ * (nfs_ops.c) the filehandle cache is now flushed when a
+ filesystem is unmounted. This avoids ending up with stale
+ information if a server bounces.
+
+ * (clock.c) new module to implement callouts. Many other
+ routines changed to use callouts instead of messing with ttl
+ fields.
+
+Sun Oct 1 17:08:20 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * 5.0 Patchlevel 3 & 4.
+
+ * Numerous cleanups.
+
+Wed Sep 13 14:30:05 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * 5.0 Patchlevel 2.
+
+ * (nfs_ops.c) portmap information is not remembered beyond the
+ basic filehandle cache interval. That avoids problems when a new
+ portmap and/or rpc.mountd is started and the bound port changes.
+
+ * (mapc.c) cache reloads are automatically done every hour.
+
+ * Removed xlog macro in favour of plog() so that the log level
+ can be reflected through to syslog(). log() routine renamed to
+ plog() which takes an extra parameter indicating the log level.
+
+Tue Sep 5 20:00:19 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (nfs_ops.c) when a server is known to be down, any cached file
+ handles and port mapping informaton is flushed since that may have
+ changed when it comes back up.
+
+ * (map.c) timeout no longer attempts to unmount a hung mount point.
+
+Mon Sep 4 14:49:18 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (afs_ops.c) a mount node which timed out during mount is now
+ retained for the normal timeout interval rather than for a short
+ period. This avoids wasting time retrying mounts from a server
+ which is down.
+
+ * (afs_ops.c) hung mounts are now detected and not used as a
+ duplicate mount - something which defeated the replacement fs
+ scheme.
+
+ * (nfs_ops.c) keepalive's now back-off when a server has gone
+ down.
+
+Thu Aug 31 21:18:35 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * 5.0 Patchlevel 1.
+
+ * Fixed several bugs which showed up in the keepalive
+ implementation when a gateway went down causing
+ a different sequence of errors than usual.
+
+Wed Aug 30 11:29:21 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (amq.x) now uses a Sun assigned program number.
+
+ * Revision 5.0 - can now start using metaconfig.
+
+Tue Aug 29 14:36:48 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (os-u3_0.h, os-type) now knows about DECstations (mips).
+
+ * (nfs_stubs.c) Added hooks to readlink entry point to call
+ per-fs readlink routine if it exists, otherwise old behaviour.
+
+ * (afs_ops.c) Added implementation of "type=direct". This is
+ the same as "type=auto" but is itself the link to the
+ mount point, rather than being a directory containing a list
+ of links to mount points.
+
+Mon Aug 28 17:48:15 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (afs_ops.c) Changed readdir to workaround a problem on
+ ultrix 3 where it seems to forget that eof has been reached.
+
+Thu Aug 24 15:17:55 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * Created "beta16".
+
+ * (afs_ops.c) /defaults is located along with every key.
+ this makes it possible to update the /defaults in
+ a map and get to use it.
+
+ * (mapc.c) added map cache synchronization support. if
+ a file or ndbm map is updated the cache is junked so avoiding
+ things getting out of sync.
+
+Wed Aug 23 19:17:52 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (os-u3_0.h) new file to support Ultrix 3.0
+
+ * (opts.c) allow environment variables to be accessed via
+ the same ${env} syntax used for options & selectors.
+
+Tue Aug 22 13:19:49 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (opts.c, get_args.c) added support for kernel architecture
+ type to allow /usr/kvm to be automounted under SunOS 4.x.
+
+ * (os-xinu43.h) updated for june '89 release of MORE/bsd.
+
+ * (opts.c) fixed memory allocation problems where some strings
+ may not have been strdup'ed before they were free'ed so causing
+ the malloc arena to get into a twist. This caused core dumps on
+ some machines and infinite loops on others.
+
+ * (*.c) clock handling is now done by a macro. Global variable
+ clock_valid is > 0 (ie the time) when valid, 0 if invalid.
+
+ * (map.c) timeout code survived a complete rewrite and is now
+ O(n) rather than O(n^2).
+
+ * (info_hes.c) new database hooks for Hesiod nameserver.
+
+ * (get_args.c) the local sub-domain is picked up from the
+ hostname if it is not specifed with -d. The subdomain is
+ then stripped from the hostname.
+
+ * (am.c) when a SIGTERM is received, an immediate abort
+ occurs - only the top-level automounts are unmounted; all
+ other mounts stay -- use amd -r to restart.
+
+ * (afs_ops.c) cleaned up key prefix handling. Again updated
+ the "hostname" string passed to the kernel so that includes
+ the hostname, pid and mount point.
+
+Tue Aug 8 16:05:23 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (nfs_ops.c) changed the way the file handle cache is managed.
+ No longer gets a race condition between something entering the
+ cache and being used and discard.
+
+Tue Jul 25 20:40:51 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (map.c) changed fh_to_mp2 so that it does not return
+ ESTALE during shutdown. it returns ENOENT instead which
+ avoids thrashing with the kernel.
+
+Sun Jul 23 15:06:10 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (afs_ops.c) make sure the incoming key from the kernel
+ does not contain any characters which could cause trouble
+ during macro expansion (such as `"! etc).
+
+ * (afs_ops.c) fixed contruction of "mtab" entry.
+
+Fri Jul 21 11:01:05 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (afs_ops.c) some changes to support the new startup
+ shutdown scheme.
+
+ * (map.c) startup and shutdown are now done using the
+ standard interfaces. Startup is done by creating a
+ private cache map ";root;" and then doing lookups
+ on all the names in it. Shutdown is done by forcibly
+ timing out all the mount points including the automount
+ points.
+
+ * (info_*.c) modified to provide interface required by
+ mapc.c module.
+
+ * (mapc.c) new module to implement map caching. Caching
+ can be controlled by an fs option. "all" means cache
+ the entire map (if possible). "inc" means cache things
+ incrementally. "none" means never cache things. Each
+ map type has a default caching mode which is used if
+ cache option "default" is used.
+
+Wed Jul 19 16:14:52 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (sched.c) implements a general sleep/wakeup scheme and uses
+ it for sub-process handling.
+
+ * (nfs_start.c) task_notify() called from where it used to
+ be called.
+
+ * (nfs_ops.c) now implements a non-blocking rpc library.
+ Everything in nfs_ops was changed to use it. This should
+ not be in this file and will be moved later.
+
+ * (map.c) if a mount point times out and it is deferred then
+ issue a wakeup so that it can be retried.
+
+ * (map.c) when creating a new mount point fetches the entry
+ "/defaults" from the associated map if no other options are
+ specified.
+
+ * (am.c) implements the -p (print process id) option.
+
+ * (afs_ops.c) a mount attempt now has a time-to-live of twenty
+ seconds. if only deferred attempts are waiting after that
+ interval the kernel gets sent ETIMEDOUT.
+
+ * (afs_ops.c) the name by which the kernel knows the filesystem
+ has changed from pid%d@host to /mountpoint@host. That looks
+ better to users who get hit by it.
+
+Fri Jul 14 18:46:16 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (afs_ops.c) now knows about defered mounts - mounts which
+ are not in progress, not completed, and not failed.
+
+ * (sched.c) added new entry point sched_ast(). This simulates
+ a completed job. The basic idea is to let something else return
+ to the main scheduling loop with a guarentee that it will be
+ called back when some other action has taken place.
+
+ * (nfs_ops.c) implemented a file handle cache. The nfs_init
+ routine starts up a request for the filehandle and the mount
+ routine uses it when it arrives.
+
+Thu Jul 13 18:07:58 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (afs_ops.c) found a race condition between an error occuring
+ and the am_node being timed out. Fixed by updating the
+ time-to-live and keepalive counters in the node whenever
+ AMF_MOUNTING is cleared. Also changed afs_lookuppn() so that
+ it doesn't destroy the node when it returns the error code.
+ This stops thrashing and the node is eventually timed out.
+ Now the only way a node gets deleted is by the timeout code
+ which seems more elegant.
+
+Tue Jul 11 15:36:44 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * Created "beta15".
+
+ * Fixed *all* references to "u2.2". Some where missed in
+ the original change. They are now u2_2.
+
+ * (mk-amd-map.c) new command. Converts plain files into
+ ndbm databases for use by the info_ndbm module. Hooks
+ included for future support for gdbm just as soon as I
+ can get a copy.
+
+Sun Jul 9 19:00:22 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * Created "beta14".
+
+ * (get_info.c) code to handle yp and files now split into
+ new files info_yp.c and info_file.c New support for ndbm
+ databases is in info_ndbm.c. A table in get_info.c controls
+ what and in which order things are searched.
+
+ * (map.c, nfs_stubs.c) better handling for hung mount points.
+ if a filehandle is passed in by the kernel which references
+ a hung node, then try to find a replacement, possibly by calling
+ lookup explicitly.
+
+ * (*.c) use new xlog(level)(message) interface
+
+Thu Jun 8 20:28:55 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (nfs_ops.c, ufs_ops.c) when compiled with DEBUG, display
+ the fs options being used.
+
+ * (am.c) make test for root a little more polite.
+
+ * (get_args.c) update Usage message to include -r option.
+
+Wed Jun 7 16:28:51 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (rpc_fwd.c) fwd_reply: if the recvfrom call fails because it
+ is interrupted then try again.
+
+Tue Jun 6 16:39:15 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * Created "beta12".
+
+ * (afs_ops.c) inheriting mount option list from command line
+ is now cumulative. A -foo on the command line is prepended
+ to the default option list taken from the map. This can be
+ used to override the ``default default'' options in opts.c.
+
+ * (get_args.c, am.c) added new -r (restart) option. Restart of
+ mounted filesystems is only done if this option is specified.
+ Should *not* be specified in /etc/rc.local of course.
+
+ * (yp_master.c) make the enumeration error message more verbose
+ when debugging is enabled.
+
+ * (rpc_fwd.c) rearranged some declarations at the top. Removed
+ a spurious call to free which was causing grief on some systems,
+ but not on Sun's. [This problem was the reason for implementing
+ the -D mem option.]
+
+ * (opts.c) make sure opt_key and opt_path are set to a zero
+ length string unless otherwise specified. Previously they
+ were are source of dangling pointers.
+
+ * (nfs_ops.c) make sure that the allocated nfs_private identifiers
+ are unique even when some filesystem are being restarted. This mean
+ starting the basic allocation from 1, not zero.
+
+ * (am.h, get_args.c, util.c) added definition and implmentation of
+ a simple memory allocation trace (D_MEM).
+
+ * (afs_ops.c) afs_lookuppn: tightened up memory allocation and
+ delay string copying until last possible moment.
+
+Mon Jun 5 18:01:18 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * (Makefile.com) diffs: added new rule to generate diffs
+ between versions.
+
+ * (get_info.c) search_file: added a new dlog() to note when
+ wildcards are returned.
+
+ * (afs_ops.c) afs_lookuppn: call to init_map specifies efs as
+ the default ops structure. If the location list only contained
+ defaults and no real mounts then this previously caused a null
+ pointer dereference.
+
+ * (map.c) last_used_map: Added new variable. Keeps track of the
+ last used map, which may be wildly different from first_free_map.
+ This fixes bugs in several routines in this file.
+
+ * (util.c) mkdirs, rmdirs: Changed directory make/unmake. It is
+ not possible to quickly determine how many directories need to
+ be created or deleted, so we try to make as many as possible.
+
+ * (opts.c) Added default values for rfs, rhost and fs.
+ The new defaults guarentee unique names to allow the NFS
+ keepalive stuff to work.
+
+Sun Jun 4 16:12:15 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * First draft of documentation included in the next release.
+
+ * Hooks for TFS added, though this still requires a lot of work.
+
+ * Re-implemented option handling. Options are now allocated
+ dynamically on a per-mount basis in the continuation structure.
+
+ * Changed os type u2.2 to u2_2 to allow for regular expression
+ matching in selectors.
+
+ * Format of mount maps is now entirely different. Instead of
+ guessing which filesystem type is being used, it is now explicitly
+ stated along with the required options. Variable expansion is
+ done on the options and selectors are also implemented. The
+ requested name can also contain any of the selectors.
+
+Wed May 24 15:21:39 1989 Jan-Simon Pendry (jsp at achilles)
+
+ * Re-implemented NFS ping algorithm to use the new RPC forwarding
+ system. This allowed a large amount of nfs_ops specific code
+ to be removed from nfs_start.c and moved to nfs_ops.c.
+ There is still no strategy for hung file systems. At the moment
+ it will merely try to mount an alternative (or the same again)
+ to the same place in the file system.
+
+ * Added RPC forwarding package. This supports general RPC gatewaying
+ over a UDP transport. The idea is to put a packet identifier into
+ each outgoing RPC packet and then match that up in a database when
+ a reply comes in. The database records the original packet identifier
+ (so that it can be replaced), the source address for the packet and
+ a function to call to do the forwarding.
+
+ * ChangeLog added between beta8 and beta9. Should have done this sooner.
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