Commit Graph

74 Commits

Author SHA1 Message Date
Poul-Henning Kamp
cf95b5c381 Eliminate unused second argument to reassignbuf() and simplify it
accordingly.
2004-07-25 21:24:23 +00:00
Alfred Perlstein
f257b7a54b Make VFS_ROOT() and vflush() take a thread argument.
This is to allow filesystems to decide based on the passed thread
which vnode to return.
Several filesystems used curthread, they now use the passed thread.
2004-07-12 08:14:09 +00:00
Brian Somers
0ac4013324 Change the following environment variables to kernel options:
bootp -> BOOTP
    bootp.nfsroot -> BOOTP_NFSROOT
    bootp.nfsv3 -> BOOTP_NFSV3
    bootp.compat -> BOOTP_COMPAT
    bootp.wired_to -> BOOTP_WIRED_TO

- i.e. back out the previous commit.  It's already possible to
pxeboot(8) with a GENERIC kernel.

Pointed out by: dwmalone
2004-07-08 22:35:36 +00:00
Brian Somers
59e1ebc9b5 Change the following kernel options to environment variables:
BOOTP -> bootp
    BOOTP_NFSROOT -> bootp.nfsroot
    BOOTP_NFSV3 -> bootp.nfsv3
    BOOTP_COMPAT -> bootp.compat
    BOOTP_WIRED_TO -> bootp.wired_to

This lets you PXE boot with a GENERIC kernel by putting this sort of thing
in loader.conf:

    bootp="YES"
    bootp.nfsroot="YES"
    bootp.nfsv3="YES"
    bootp.wired_to="bge1"

or even setting the variables manually from the OK prompt.
2004-07-08 13:40:33 +00:00
Poul-Henning Kamp
e3c5a7a4dd When we traverse the vnodes on a mountpoint we need to look out for
our cached 'next vnode' being removed from this mountpoint.  If we
find that it was recycled, we restart our traversal from the start
of the list.

Code to do that is in all local disk filesystems (and a few other
places) and looks roughly like this:

		MNT_ILOCK(mp);
	loop:
		for (vp = TAILQ_FIRST(&mp...);
		    (vp = nvp) != NULL;
		    nvp = TAILQ_NEXT(vp,...)) {
			if (vp->v_mount != mp)
				goto loop;
			MNT_IUNLOCK(mp);
			...
			MNT_ILOCK(mp);
		}
		MNT_IUNLOCK(mp);

The code which takes vnodes off a mountpoint looks like this:

	MNT_ILOCK(vp->v_mount);
	...
	TAILQ_REMOVE(&vp->v_mount->mnt_nvnodelist, vp, v_nmntvnodes);
	...
	MNT_IUNLOCK(vp->v_mount);
	...
	vp->v_mount = something;

(Take a moment and try to spot the locking error before you read on.)

On a SMP system, one CPU could have removed nvp from our mountlist
but not yet gotten to assign a new value to vp->v_mount while another
CPU simultaneously get to the top of the traversal loop where it
finds that (vp->v_mount != mp) is not true despite the fact that
the vnode has indeed been removed from our mountpoint.

Fix:

Introduce the macro MNT_VNODE_FOREACH() to traverse the list of
vnodes on a mountpoint while taking into account that vnodes may
be removed from the list as we go.  This saves approx 65 lines of
duplicated code.

Split the insmntque() which potentially moves a vnode from one mount
point to another into delmntque() and insmntque() which does just
what the names say.

Fix delmntque() to set vp->v_mount to NULL while holding the
mountpoint lock.
2004-07-04 08:52:35 +00:00
Poul-Henning Kamp
f3732fd15b Second half of the dev_t cleanup.
The big lines are:
	NODEV -> NULL
	NOUDEV -> NODEV
	udev_t -> dev_t
	udev2dev() -> findcdev()

Various minor adjustments including handling of userland access to kernel
space struct cdev etc.
2004-06-17 17:16:53 +00:00
Poul-Henning Kamp
89c9c53da0 Do the dreaded s/dev_t/struct cdev */
Bump __FreeBSD_version accordingly.
2004-06-16 09:47:26 +00:00
Warner Losh
f36cfd49ad Remove advertising clause from University of California Regent's
license, per letter dated July 22, 1999 and email from Peter Wemm,
Alan Cox and Robert Watson.

Approved by: core, peter, alc, rwatson
2004-04-07 20:46:16 +00:00
Jim Rees
2754e7333e fix for 64-bit arch:
use %zd to print size_t types and sizeof()

Approved by:	alfred
Tested on:	sparc64, amd64
2004-03-26 22:44:59 +00:00
Poul-Henning Kamp
4d453ef101 Properly vector all bwrite() and BUF_WRITE() calls through the same path
and s/BUF_WRITE()/bwrite()/ since it now does the same as bwrite().
2004-03-11 18:02:36 +00:00
John Baldwin
6074439965 kthread_exit() no longer requires Giant, so don't force callers to acquire
Giant just to call kthread_exit().

Requested by:	many
2004-03-05 22:42:17 +00:00
Jim Rees
73c02c410e NFSv4 fixes from Connectathon 2004:
remove unused pid field of file context struct
map nfs4 error codes to errnos
eliminate redundant code from nfs4_request
use zero stateid on setattr that doesn't set file size
use same clientid on all mounts until reboot
invalidate dirty bufs in nfs4_close, to play it safe
open file for writing if truncating and it's not already open

Approved by:	alfred
2004-02-27 19:37:43 +00:00
Jim Rees
3ea5b421eb protect new cdevsw entries with "#if (__FreeBSD_version > 502102)" 2004-02-22 05:49:38 +00:00
Jim Rees
ed56328b92 in idmap_uid_to_name(), don't try to use the entry after freeing it, in the
idmap_add failure case (found by Ted Unangst via Colin Percival)

also convert idmap_hashf to return void, since it can't fail

also change some panics to error returns
2004-02-21 22:52:02 +00:00
Jim Rees
3a7fa52e65 ask for rdattr_err in readdir, so we won't fail the readdir if we can't get
attrs on one or more entries
2004-02-21 22:10:35 +00:00
Poul-Henning Kamp
dc08ffec87 Device megapatch 4/6:
Introduce d_version field in struct cdevsw, this must always be
initialized to D_VERSION.

Flip sense of D_NOGIANT flag to D_NEEDGIANT, this involves removing
four D_NOGIANT flags and adding 145 D_NEEDGIANT flags.
2004-02-21 21:10:55 +00:00
Jim Rees
695a135c63 whitespace changes only (prepare for merge from citi tree) 2004-02-20 16:57:36 +00:00
Poul-Henning Kamp
8bd95dd3be Use consistent style for cdevsw initialization 2004-02-14 20:04:25 +00:00
Tim J. Robbins
3a7f5cac4a Use automatic major number allocation for the nfs4 device instead of
stealing #29, which is already reserved for mcd.
2004-02-11 13:31:30 +00:00
Alfred Perlstein
49ebf4cb75 This patch fixes two little portability (to !GCC compilers) problems:
1. Use C99-style variable argument macros rather than GNU ones.
2. Don't cast id to ident_t.  Its type is already ident_t and casting to
   a union type is a constraint violation.

Submitted by: Stefan Farfeleder <stefan@fafoe.narf.at>
2003-12-11 11:30:26 +00:00
Alfred Perlstein
90abe7f294 Use function pointers to remove the depenancy cross dependancy on nfs4
and the nfs3 client.  Also fix some bugs that happen to be causing crashes
in both v3 and v4 introduced by the v4 import.

Submitted by: Jim Rees <rees@umich.edu>
Approved by: re
2003-11-22 02:21:49 +00:00
Alfred Perlstein
e549a574c6 Fix compliation on sparc64.
Change arg from uint32_t to size_t to match prototypes.
2003-11-15 01:25:26 +00:00
Alfred Perlstein
5ed904e503 unbreak LINT. 2003-11-15 00:26:42 +00:00
Alfred Perlstein
1bf8720450 University of Michigan's Citi NFSv4 kernel client code.
Submitted by: Jim Rees <rees@umich.edu>
2003-11-14 20:54:10 +00:00