- Completly changed the internals of umount(8). We do three
checks now to see if 'argv' is in the mounttable. It they
all fail, we return to main and print a warning.
- fixed the umount mount-order. The checks are rather complex
to do this. Cause umount(8) should also be able to unmount
several devices at once ('umount -a', 'umount -A',
'umount /mnt /mnt2'), the mount-order get's important.
I added checks to mark and unmark already unmounted devices.
- Various fixes with nfs-unmounts (no rpc-calls were done,
or they were done although there was an existing mount).
Since we allow overlay-mounts, we should also handle them
properly.
- Translate the deprecated nfs-syntax with '@' to ':' like
mount_nfs does. The ':' syntax has now precedence, but '@'
still works.
- 'umount -v' is now fixed for all cases and doesn't print
garbage like two times the mountpoint etc.
- removed non documented and useless umount '-F'.
- hanged nfsmounts can now unmounted 'without' any problems.
I've removed stat() and realpath() checks on the mountpoint.
Instead we just do a realpath() on the basedir of the
mountpath and add the dirname again.
Implemented this as an idea from phk. But there are still
vfs-restrictions if the nfs_mount is busy. If there are
unwritten metadata on a hanged nfs-mount, and we modify
nfs_vfsops.c to not return EBUSY, we get a deadlock :(
The problem has now moved from userland to kernel.
- removed the BUGS part from the umount(8) manpage.
- Converted it to ANSI C (more than 60% of the code have
changed).
Martin_Blapp
Fixed PR's
----------
o [1999/02/03] bin/9893 NFS umount of regular file impossible
s [1995/11/27] bin/841 stale nfs mounts cannot be umounted
o [1999/08/01] bin/12911 alfred NFS umounts are not properly done
if just the mountpoint gets umounted
Only partially solved:
----------------------
The problem is now in kernel:
o [1999/04/07] bin/11005 `umount -f' does not work if the
NFS-server is down.
PR: bin/9893 bin/841 bin/12911 bin/11005
Submitted by: Martin Blapp <mb@imp.ch>
phk's script walked through .c and .h files, but some of the ones on
the list are actually derived from sys/svr4/syscalls.master. Make
the necessary changes here and the others will implicitly follow...
Submitted by: phk
retry count for the ccb). This is probably not quite the right thing, but it
is better than silently hanging on (possibly broken) h/w which is what we
do now.
Reviewed by:Justin/Ken: they weren't entirely happy about it but didn't say no.
next try over chroot (descriptor closed). getgrnam() used already handles
endgrent() properly and honors _gr_stayopen. Automatically call
setgroupent(1) when _pw_stayopen is set (for YP/NIS code).
