From 22c024157129e287a6e4bb4bc7232144c36d9604 Mon Sep 17 00:00:00 2001
From: Jeremy Allison <jra@samba.org>
Date: Thu, 9 Oct 2003 01:46:01 +0000
Subject: Changes to allow Samba3 to pass the Samba4 RAW-READ tests. Jeremy.
 (This used to be commit e7565dbba696adbb0fd8cca6b86a1a7e5a655f2e)

---
 source3/locking/brlock.c  |  9 +++++++--
 source3/locking/locking.c | 11 +++++++----
 2 files changed, 14 insertions(+), 6 deletions(-)

(limited to 'source3/locking')

diff --git a/source3/locking/brlock.c b/source3/locking/brlock.c
index 20d76c9c79..c51a5a2aac 100644
--- a/source3/locking/brlock.c
+++ b/source3/locking/brlock.c
@@ -172,7 +172,8 @@ static BOOL brl_conflict_other(struct lock_struct *lck1, struct lock_struct *lck
 	}
 
 	if (lck1->start >= (lck2->start + lck2->size) ||
-	    lck2->start >= (lck1->start + lck1->size)) return False;
+	    lck2->start >= (lck1->start + lck1->size))
+		return False;
 	    
 	return True;
 } 
@@ -305,7 +306,7 @@ static int lock_compare(struct lock_struct *lck1,
 NTSTATUS brl_lock(SMB_DEV_T dev, SMB_INO_T ino, int fnum,
 		  uint16 smbpid, pid_t pid, uint16 tid,
 		  br_off start, br_off size, 
-		  enum brl_type lock_type)
+		  enum brl_type lock_type, BOOL *my_lock_ctx)
 {
 	TDB_DATA kbuf, dbuf;
 	int count, i;
@@ -315,6 +316,7 @@ NTSTATUS brl_lock(SMB_DEV_T dev, SMB_INO_T ino, int fnum,
 	static int last_failed = -1;
 	static br_off last_failed_start;
 
+	*my_lock_ctx = False;
 	kbuf = locking_key(dev,ino);
 
 	dbuf.dptr = NULL;
@@ -343,6 +345,9 @@ NTSTATUS brl_lock(SMB_DEV_T dev, SMB_INO_T ino, int fnum,
 		for (i=0; i<count; i++) {
 			if (brl_conflict(&locks[i], &lock)) {
 				status = NT_STATUS_LOCK_NOT_GRANTED;
+				/* Did we block ourselves ? */
+				if (brl_same_context(&locks[i].context, &lock.context))
+					*my_lock_ctx = True;
 				goto fail;
 			}
 #if ZERO_ZERO
diff --git a/source3/locking/locking.c b/source3/locking/locking.c
index 91bc20af90..c3abd63818 100644
--- a/source3/locking/locking.c
+++ b/source3/locking/locking.c
@@ -98,7 +98,7 @@ BOOL is_locked(files_struct *fsp,connection_struct *conn,
 ****************************************************************************/
 
 static NTSTATUS do_lock(files_struct *fsp,connection_struct *conn, uint16 lock_pid,
-		 SMB_BIG_UINT count,SMB_BIG_UINT offset,enum brl_type lock_type)
+		 SMB_BIG_UINT count,SMB_BIG_UINT offset,enum brl_type lock_type, BOOL *my_lock_ctx)
 {
 	NTSTATUS status = NT_STATUS_LOCK_NOT_GRANTED;
 
@@ -114,7 +114,7 @@ static NTSTATUS do_lock(files_struct *fsp,connection_struct *conn, uint16 lock_p
 		status = brl_lock(fsp->dev, fsp->inode, fsp->fnum,
 				  lock_pid, sys_getpid(), conn->cnum, 
 				  offset, count, 
-				  lock_type);
+				  lock_type, my_lock_ctx);
 
 		if (NT_STATUS_IS_OK(status) && lp_posix_locking(SNUM(conn))) {
 
@@ -153,7 +153,7 @@ static NTSTATUS do_lock(files_struct *fsp,connection_struct *conn, uint16 lock_p
 ****************************************************************************/
 
 NTSTATUS do_lock_spin(files_struct *fsp,connection_struct *conn, uint16 lock_pid,
-		 SMB_BIG_UINT count,SMB_BIG_UINT offset,enum brl_type lock_type)
+		 SMB_BIG_UINT count,SMB_BIG_UINT offset,enum brl_type lock_type, BOOL *my_lock_ctx)
 {
 	int j, maxj = lp_lock_spin_count();
 	int sleeptime = lp_lock_sleep_time();
@@ -165,7 +165,7 @@ NTSTATUS do_lock_spin(files_struct *fsp,connection_struct *conn, uint16 lock_pid
 	ret = NT_STATUS_OK; /* to keep dumb compilers happy */
 
 	for (j = 0; j < maxj; j++) {
-		status = do_lock(fsp, conn, lock_pid, count, offset, lock_type);
+		status = do_lock(fsp, conn, lock_pid, count, offset, lock_type, my_lock_ctx);
 		if (!NT_STATUS_EQUAL(status, NT_STATUS_LOCK_NOT_GRANTED) &&
 		    !NT_STATUS_EQUAL(status, NT_STATUS_FILE_LOCK_CONFLICT)) {
 			return status;
@@ -173,6 +173,9 @@ NTSTATUS do_lock_spin(files_struct *fsp,connection_struct *conn, uint16 lock_pid
 		/* if we do fail then return the first error code we got */
 		if (j == 0) {
 			ret = status;
+			/* Don't spin if we blocked ourselves. */
+			if (*my_lock_ctx)
+				return ret;
 		}
 		if (sleeptime)
 			sys_usleep(sleeptime);
-- 
cgit