From Olaf Seibert <rhialto@polder.ubc.kun.nl> (PR 3687)
* Make an attempt to check the maximum filesize before attempting
a write to the server, as write RPCs will typically happen
asynchronously, and the process will not see the error.
Fixes problems with unexpectly truncated files at 4G
* Pass up errors in nfs_writerpc correctly
the server code would always skip all dir entries for a readdirplus
operation. To avoid endlessly retrying clients, try VFS_VGET first,
and it it fails, return NFSERR_NOTSUPP so that client will fall
back to normal readdir operations.
In readdirplus, don't keep such pointers but store the file attributes
in a variable instead until they are needed. Change nfsm_loadattr*
a bit so it can accept a direct pointer to an nfs_fattr structure.
architectures), truncate them intelligently instead.
The truncation is done centralized in vnode_pager.c.
This prevents from wrap-over effects when parts of large (>2^32 byte) files
are mmapped.
Don't allow to mmap above the numerical range of vm_offset_t.
This is considered a temporary solution until the vm system handles the
object sizes/offsets more cleanly.
with full pathname lookups if a public filehandle is used, and that
it translates the '%' escapes (URL-style) in the same case. Also,
make nfsrv_fhtovp convert the public filehandle to the vp of the
publicly exported filesystem, as stored in the nfs_pub structure.
a request on the public filehandle. Extend the lookup operation to
support WebNFS, including index file support (URL style). Yucky, it's
optional in the spec, but Solaris 2.6 will support it, so..
The RPC/bootparamd calls to get the root and swap paths are now done
in nfs_boot_init() instead of nfs_boot_getfh(), so the latter now just
does the RPC/mountd call. Also changed some panics into error returns.
other requests will get through and the mount point will be effectively dead.
This could happen for mounts using TCP and -i and/or -s.
* Reserve enough space for UDP sockets. Fixes PR 3008, from Naofumi Honda.
anyone else can get to it, by checking if a reply was received, and it
has thus become unnecessary to take the lock. From FreeBSD.
XXX I don't really like this, "locks" potentially suffer from the same
problem throughout the whole kernel; they should probably be FIFO everywhere.
Some of the stuff (e.g., rarpd, bootpd, dhcpd etc., libsa) still will
only support Ethernet. Tcpdump itself should be ok, but libpcap needs
lot of work.
For the detailed change history, look at the commit log entries for
the is-newarp branch.
date: 1997/02/10 18:41:15; author: cp; state: Exp; lines: +8 -2
Make nfs_realign go away on sparc and add functionality to nfsm_disct.
===
[XXX this introduces an ifdef __i386__, see the comment. Should be changed]
date: 1996/07/23 17:14:46; author: donn; state: Exp; lines: +6 -4
Be sure to push out the last page of the file before truncating it.
date: 1996/10/14 22:41:20; author: donn; state: Exp; lines: +2 -2
From Chris: Nfs_link() called vput() on the wrong vnode when aborting
from a cross-device link, which could (and did) lead to crashes.
date: 1996/10/24 16:43:43; author: pjd; state: Exp; lines: +6 -2
Return EOPNOTSUPP when trying to do a setattr with flags.
===
Also (from BSDI too, but the RCS message did not quite describe the change
to this particular file well): move the EROFS a bit further down to
let VOP_ACCESS do it's work and return an 'expected' error value to
a possible layered filesystem.
date: 1995/11/30 20:37:03; author: cp; state: Exp; lines: +25 -14
Change splsoftclock() to splnet();
Make nfsrv_getstream create two copies of data when
splitting up an mbuf rather than two references to the
same external buffer. The symptom this fixes is client
hangs.
date: 1997/02/10 18:41:13; author: cp; state: Exp; lines: +4 -1
Make nfs_realign go away on sparc and add functionality to nfsm_disct.
date: 1996/11/20 20:02:54; author: pjd; state: Exp; lines: +7 -4
In nfsrv_access(), if VOP_ACCESS() returns an error and the
error == EPERM or its not the owner doing the access, return the error.
date: 1995/11/30 20:37:53; author: cp; state: Exp; lines: +3 -3
Change splsoftclock() to splnet();
Make nfsrv_getstream create two copies of data when
splitting up an mbuf rather than two references to the
same external buffer. The symptom this fixes is client
hangs.
date: 1996/10/16 00:06:05; author: ewv; state: Exp; lines: +5 -3
Clear pending signal when an unmount fails, this allows us another chance
at the umount after a short sleep. The fixes a problem where /usr is
mounted via nqnfs and the system hangs on shutdown since the umount()
always fails with EBUSY (inetd is still busy on usr) and since we don't
clear the signal we end up stuck looping and never give inetd a chance to
catch its SIGKILL.
date: 1996/10/23 18:22:14; author: donn; state: Exp; lines: +12 -7
Kirk's changes to prevent races when unmounting. (1) Unmount()
and vfs_unmountall() now call vfs_busy() so that they participates
in the mount structure locking scheme. Dounmount() calls vfs_unbusy()
to unlock things, and makes sure to wake up waiters if there's an
error. (2) The MFS and NQNFS daemons also now use vfs_busy() when
unmounting filesystems. Kirk restructured the code so that a
successful unmount by another process won't leave the possibility
that a daemon might reference a mount structure that has been freed.
date: 1996/09/06 03:00:31; author: donn; state: Exp; lines: +1 -2
Because NFS doesn't implement vnode locking, nfs_inactive() doesn't really
have the vnode locked and hence it can't reliably access the vnode after
it performs a blocking operation. We remove one blocking call and push
the no-op VOP_UNLOCK higher so that we don't access the vnode after we
delete the sillyrename file. This should prevent crashes we've seen in
which the vnode turned into a UFS vnode and caused a panic in ufs_unlock()
when we tried to 'unlock' it.
date: 1996/09/25 19:15:21; author: cp; state: Exp; lines: +4 -0
Kirk's change to not corrupt files after a delete.
date: 1996/11/08 19:53:45; author: donn; state: Exp; lines: +16 -4
Krik's change to solve the paradox that vclean() calls nfs_inactive()
with VXLOCK set on the vnode, and nfs_inactive() was calling vget()
to get a reference on the vnode, which in turn hung on VXLOCK.
Nfs_inactive() now checks v_usecount to make sure that the vnode
is not coming from vclean() before it does a vget().
christos