Another change related to (6401) and (6402): When an attempt to unlock a file fails in os_unix.c, close all files held open waiting for the unlock event anyway.

This prevents a file-descriptor leak when testing IO errors. (CVS 6406)

FossilOrigin-Name: 50fbcdea045f7d4266d9afa721616c720564aa93

manifest

@@ -1,5 +1,5 @@
-C Add\sa\scomment\sto\sthe\sdoubleToInt64()\sroutine\sthat\sexplains\swhy\sreturning\nminInt\sis\sin\sfact\scorrect\swhen\sit\sseems\slike\smaxInt\sshould\sbe\sreturned.\s(CVS\s6405)
+C Another\schange\srelated\sto\s(6401)\sand\s(6402):\sWhen\san\sattempt\sto\sunlock\sa\sfile\sfails\sin\sos_unix.c,\sclose\sall\sfiles\sheld\sopen\swaiting\sfor\sthe\sunlock\sevent\sanyway.\n\sThis\sprevents\sa\sfile-descriptor\sleak\swhen\stesting\sIO\serrors.\s(CVS\s6406)
-D 2009-03-29T15:12:10
+D 2009-03-30T07:39:35
 F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
 F Makefile.in 583e87706abc3026960ed759aff6371faf84c211
 F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@@ -141,7 +141,7 @@ F src/os.c c2aa4a7d8bb845222e5c37f56cde377b20c3b087
 F src/os.h fa3f4aa0119ff721a2da4b47ffd74406ac864c05
 F src/os_common.h 8c61457df58f1a4bd5f5adc3e90e01b37bf7afbc
 F src/os_os2.c bed77dc26e3a95ce4a204936b9a1ca6fe612fcc5
-F src/os_unix.c b62e660f82f4aa37d68ff4ffb11673ee4c75e1c9
+F src/os_unix.c 5d667f24615043c937a138faaed5f3e93b8619b0
 F src/os_win.c 40636702058ed4dcd35d68151bfab56d4997cdc1
 F src/pager.c 7a2b4b118708de09e580de66d46e51c1b655f76a
 F src/pager.h 0c9f3520c00d8a3b8e792ca56c9a11b6b02b4b0f
@@ -711,7 +711,7 @@ F tool/speedtest16.c c8a9c793df96db7e4933f0852abb7a03d48f2e81
 F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
 F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
 F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
-P b601a57582051184baa37b807b1e18db93313e13
+P 7f3be3608542bbc6ac7916e5c3a5436e5f0a552e
-R b24c431aeaa41c90ffe92c8a76f50df3
+R a9bdb3adde6598714edefb4405572e3f
-U drh
+U danielk1977
-Z a18eb87f581c8e08f864572471035b43
+Z d546563cba82beaa0b71a6d7a5a8a700

manifest.uuid

@@ -1 +1 @@
-7f3be3608542bbc6ac7916e5c3a5436e5f0a552e
+50fbcdea045f7d4266d9afa721616c720564aa93

src/os_unix.c

@@ -43,7 +43,7 @@
 **   *  Definitions of sqlite3_vfs objects for all locking methods
 **      plus implementations of sqlite3_os_init() and sqlite3_os_end().
 **
-** $Id: os_unix.c,v 1.247 2009/03/28 23:47:11 drh Exp $
+** $Id: os_unix.c,v 1.248 2009/03/30 07:39:35 danielk1977 Exp $
 */
 #include "sqliteInt.h"
 #if SQLITE_OS_UNIX              /* This file is used on unix only */
@@ -1459,6 +1459,7 @@ static int unixUnlock(sqlite3_file *id, int locktype){
   }
   if( locktype==NO_LOCK ){
     struct unixOpenCnt *pOpen;
+    int rc2 = SQLITE_OK;
 
     /* Decrement the shared lock counter.  Release the lock using an
     ** OS call only when all threads in this same process have released
@@ -1480,10 +1481,8 @@ static int unixUnlock(sqlite3_file *id, int locktype){
         if( IS_LOCK_ERROR(rc) ){
           pFile->lastErrno = tErrno;
         }
-        pLock->cnt = 1;
         pLock->locktype = NO_LOCK;
         pFile->locktype = NO_LOCK;
-        goto end_unlock;
       }
     }
 
@@ -1491,30 +1490,31 @@ static int unixUnlock(sqlite3_file *id, int locktype){
     ** count reaches zero, close any other file descriptors whose close
     ** was deferred because of outstanding locks.
     */
-    if( rc==SQLITE_OK ){
+    pOpen = pFile->pOpen;
-      pOpen = pFile->pOpen;
+    pOpen->nLock--;
-      pOpen->nLock--;
+    assert( pOpen->nLock>=0 );
-      assert( pOpen->nLock>=0 );
+    if( pOpen->nLock==0 && pOpen->nPending>0 ){
-      if( pOpen->nLock==0 && pOpen->nPending>0 ){
+      int i;
-        int i;
+      for(i=0; i<pOpen->nPending; i++){
-        for(i=0; i<pOpen->nPending; i++){
+        /* close pending fds, but if closing fails don't free the array
-          /* close pending fds, but if closing fails don't free the array
+        ** assign -1 to the successfully closed descriptors and record the
-          ** assign -1 to the successfully closed descriptors and record the
+        ** error.  The next attempt to unlock will try again. */
-          ** error.  The next attempt to unlock will try again. */
+        if( pOpen->aPending[i] < 0 ) continue;
-          if( pOpen->aPending[i] < 0 ) continue;
+        if( close(pOpen->aPending[i]) ){
-          if( close(pOpen->aPending[i]) ){
+          pFile->lastErrno = errno;
-            pFile->lastErrno = errno;
+          rc2 = SQLITE_IOERR_CLOSE;
-            rc = SQLITE_IOERR_CLOSE;
+        }else{
-          }else{
+          pOpen->aPending[i] = -1;
-            pOpen->aPending[i] = -1;
-          }
-        }
-        if( rc==SQLITE_OK ){
-          sqlite3_free(pOpen->aPending);
-          pOpen->nPending = 0;
-          pOpen->aPending = 0;
         }
       }
+      if( rc2==SQLITE_OK ){
+        sqlite3_free(pOpen->aPending);
+        pOpen->nPending = 0;
+        pOpen->aPending = 0;
+      }
+    }
+    if( rc==SQLITE_OK ){
+      rc = rc2;
     }
   }