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authorphk <phk@FreeBSD.org>2004-11-04 09:57:21 +0000
committerphk <phk@FreeBSD.org>2004-11-04 09:57:21 +0000
commit27e302a86b65c2d82a3601b7d1f56add77a4316b (patch)
tree624c21e78226c47c48f9ebeceb36ef79e0336468 /sys/dev/vinum/vinumlock.c
parente5715b2cc150e2463e9765903b2ba151e4540913 (diff)
downloadFreeBSD-src-27e302a86b65c2d82a3601b7d1f56add77a4316b.zip
FreeBSD-src-27e302a86b65c2d82a3601b7d1f56add77a4316b.tar.gz
Remove unused vinum files.
Diffstat (limited to 'sys/dev/vinum/vinumlock.c')
-rw-r--r--sys/dev/vinum/vinumlock.c266
1 files changed, 0 insertions, 266 deletions
diff --git a/sys/dev/vinum/vinumlock.c b/sys/dev/vinum/vinumlock.c
deleted file mode 100644
index f1a2ea3..0000000
--- a/sys/dev/vinum/vinumlock.c
+++ /dev/null
@@ -1,266 +0,0 @@
-/*-
- * Copyright (c) 1997, 1998
- * Nan Yang Computer Services Limited. All rights reserved.
- *
- * Parts copyright (c) 1997, 1998 Cybernet Corporation, NetMAX project.
- *
- * Written by Greg Lehey
- *
- * This software is distributed under the so-called ``Berkeley
- * License'':
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by Nan Yang Computer
- * Services Limited.
- * 4. Neither the name of the Company nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * This software is provided ``as is'', and any express or implied
- * warranties, including, but not limited to, the implied warranties of
- * merchantability and fitness for a particular purpose are disclaimed.
- * In no event shall the company or contributors be liable for any
- * direct, indirect, incidental, special, exemplary, or consequential
- * damages (including, but not limited to, procurement of substitute
- * goods or services; loss of use, data, or profits; or business
- * interruption) however caused and on any theory of liability, whether
- * in contract, strict liability, or tort (including negligence or
- * otherwise) arising in any way out of the use of this software, even if
- * advised of the possibility of such damage.
- *
- * $Id: vinumlock.c,v 1.19 2003/05/23 01:07:18 grog Exp $
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <dev/vinum/vinumhdr.h>
-#include <dev/vinum/request.h>
-
-/* Lock a drive, wait if it's in use */
-#ifdef VINUMDEBUG
-int
-lockdrive(struct drive *drive, char *file, int line)
-#else
-int
-lockdrive(struct drive *drive)
-#endif
-{
- int error;
-
- /* XXX get rid of drive->flags |= VF_LOCKING; */
- if ((drive->flags & VF_LOCKED) /* it's locked */
- &&(drive->pid == curproc->p_pid)) { /* by us! */
-#ifdef VINUMDEBUG
- log(LOG_WARNING,
- "vinum lockdrive: already locking %s from %s:%d, called from %s:%d\n",
- drive->label.name,
- drive->lockfilename,
- drive->lockline,
- basename(file),
- line);
-#else
- log(LOG_WARNING,
- "vinum lockdrive: already locking %s\n",
- drive->label.name);
-#endif
- return 0;
- }
- while ((drive->flags & VF_LOCKED) != 0) {
- /*
- * There are problems sleeping on a unique identifier,
- * since the drive structure can move, and the unlock
- * function can be called after killing the drive.
- * Solve this by waiting on this function; the number
- * of conflicts is negligible.
- */
- if ((error = tsleep(&lockdrive,
- PRIBIO,
- "vindrv",
- 0)) != 0)
- return error;
- }
- drive->flags |= VF_LOCKED;
- drive->pid = curproc->p_pid; /* it's a panic error if curproc is null */
-#ifdef VINUMDEBUG
- bcopy(basename(file), drive->lockfilename, 15);
- drive->lockfilename[15] = '\0'; /* truncate if necessary */
- drive->lockline = line;
-#endif
- return 0;
-}
-
-/* Unlock a drive and let the next one at it */
-void
-unlockdrive(struct drive *drive)
-{
- drive->flags &= ~VF_LOCKED;
- /* we don't reset pid: it's of hysterical interest */
- wakeup(&lockdrive);
-}
-
-/* Lock a stripe of a plex, wait if it's in use */
-struct rangelock *
-lockrange(daddr_t stripe, struct buf *bp, struct plex *plex)
-{
- struct rangelock *lock;
- struct rangelock *pos; /* position of first free lock */
- int foundlocks; /* number of locks found */
-
- /*
- * We could get by without counting the number
- * of locks we find, but we have a linear search
- * through a table which in most cases will be
- * empty. It's faster to stop when we've found
- * all the locks that are there. This is also
- * the reason why we put pos at the beginning
- * instead of the end, though it requires an
- * extra test.
- */
- pos = NULL;
- foundlocks = 0;
-
- /*
- * we can't use 0 as a valid address, so
- * increment all addresses by 1.
- */
- stripe++;
- mtx_lock(plex->lockmtx);
-
- /* Wait here if the table is full */
- while (plex->usedlocks == PLEX_LOCKS) /* all in use */
- msleep(&plex->usedlocks, plex->lockmtx, PRIBIO, "vlock", 0);
-
-#ifdef DIAGNOSTIC
- if (plex->usedlocks >= PLEX_LOCKS)
- panic("lockrange: Too many locks in use");
-#endif
-
- lock = plex->lock; /* pointer in lock table */
- if (plex->usedlocks > 0) /* something locked, */
- /* Search the lock table for our stripe */
- for (; lock < &plex->lock[PLEX_LOCKS]
- && foundlocks < plex->usedlocks;
- lock++) {
- if (lock->stripe) { /* in use */
- foundlocks++; /* found another one in use */
- if ((lock->stripe == stripe) /* it's our stripe */
- &&(lock->bp != bp)) { /* but not our request */
-#ifdef VINUMDEBUG
- if (debug & DEBUG_LOCKREQS) {
- struct rangelockinfo lockinfo;
-
- lockinfo.stripe = stripe;
- lockinfo.bp = bp;
- lockinfo.plexno = plex->plexno;
- logrq(loginfo_lockwait, (union rqinfou) &lockinfo, bp);
- }
-#endif
- plex->lockwaits++; /* waited one more time */
- msleep(lock, plex->lockmtx, PRIBIO, "vrlock", 0);
- lock = &plex->lock[-1]; /* start again */
- foundlocks = 0;
- pos = NULL;
- }
- } else if (pos == NULL) /* still looking for somewhere? */
- pos = lock; /* a place to put this one */
- }
- /*
- * This untidy looking code ensures that we'll
- * always end up pointing to the first free lock
- * entry, thus minimizing the number of
- * iterations necessary.
- */
- if (pos == NULL) /* didn't find one on the way, */
- pos = lock; /* use the one we're pointing to */
-
- /*
- * The address range is free, and we're pointing
- * to the first unused entry. Make it ours.
- */
- pos->stripe = stripe;
- pos->bp = bp;
- plex->usedlocks++; /* one more lock */
- mtx_unlock(plex->lockmtx);
-#ifdef VINUMDEBUG
- if (debug & DEBUG_LOCKREQS) {
- struct rangelockinfo lockinfo;
-
- lockinfo.stripe = stripe;
- lockinfo.bp = bp;
- lockinfo.plexno = plex->plexno;
- logrq(loginfo_lock, (union rqinfou) &lockinfo, bp);
- }
-#endif
- return pos;
-}
-
-/* Unlock a volume and let the next one at it */
-void
-unlockrange(int plexno, struct rangelock *lock)
-{
- struct plex *plex;
-
- plex = &PLEX[plexno];
-#ifdef DIAGNOSTIC
- if (lock < &plex->lock[0] || lock >= &plex->lock[PLEX_LOCKS])
- panic("vinum: rangelock %p on plex %d invalid, not between %p and %p",
- lock,
- plexno,
- &plex->lock[0],
- &plex->lock[PLEX_LOCKS]);
-#endif
-#ifdef VINUMDEBUG
- if (debug & DEBUG_LOCKREQS) {
- struct rangelockinfo lockinfo;
-
- lockinfo.stripe = lock->stripe;
- lockinfo.bp = lock->bp;
- lockinfo.plexno = plex->plexno;
- logrq(loginfo_lockwait, (union rqinfou) &lockinfo, lock->bp);
- }
-#endif
- lock->stripe = 0; /* no longer used */
- plex->usedlocks--; /* one less lock */
- if (plex->usedlocks == PLEX_LOCKS - 1) /* we were full, */
- wakeup(&plex->usedlocks); /* get a waiter if one's there */
- wakeup((void *) lock);
-}
-
-/* Get a lock for the global config. Wait if it's not available. */
-int
-lock_config(void)
-{
- int error;
-
- while ((vinum_conf.flags & VF_LOCKED) != 0) {
- vinum_conf.flags |= VF_LOCKING;
- if ((error = tsleep(&vinum_conf, PRIBIO, "vincfg", 0)) != 0)
- return error;
- }
- vinum_conf.flags |= VF_LOCKED;
- return 0;
-}
-
-/* Unlock global config and wake up any waiters. */
-void
-unlock_config(void)
-{
- vinum_conf.flags &= ~VF_LOCKED;
- if ((vinum_conf.flags & VF_LOCKING) != 0) {
- vinum_conf.flags &= ~VF_LOCKING;
- wakeup(&vinum_conf);
- }
-}
-/* Local Variables: */
-/* fill-column: 50 */
-/* End: */
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