Additional coverage testing. (CVS 3823)

FossilOrigin-Name: 26b2e1aede3f776134b2d6e941d17a907843e650

2 files changed, 11 insertions, 9 deletions

diff --git a/src/os_unix.c b/src/os_unix.c
index 18ae4b76c..281348b79 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -919,11 +919,7 @@ static int unixOpenDirectory(
   const char *zDirname
 ){
   unixFile *pFile = (unixFile*)id;
-  if( pFile==0 ){
-    /* Do not open the directory if the corresponding file is not already
-    ** open. */
-    return SQLITE_CANTOPEN;
-  }
+  assert( pFile!=0 );
   SET_THREADID(pFile);
   assert( pFile->dirfd<0 );
   pFile->dirfd = open(zDirname, O_RDONLY|O_BINARY, 0);
@@ -1000,10 +996,13 @@ static int seekAndRead(unixFile *id, void *pBuf, int cnt){
   TIMER_START;
 #if defined(USE_PREAD)
   got = pread(id->h, pBuf, cnt, id->offset);
+  SimulateIOError( got = -1 );
 #elif defined(USE_PREAD64)
   got = pread64(id->h, pBuf, cnt, id->offset);
+  SimulateIOError( got = -1 );
 #else
   newOffset = lseek(id->h, id->offset, SEEK_SET);
+  SimulateIOError( newOffset-- );
   if( newOffset!=id->offset ){
     return -1;
   }
@@ -1026,7 +1025,6 @@ static int unixRead(OsFile *id, void *pBuf, int amt){
   int got;
   assert( id );
   got = seekAndRead((unixFile*)id, pBuf, amt);
-  SimulateIOError( got = -1 );
   if( got==amt ){
     return SQLITE_OK;
   }else if( got<0 ){
diff --git a/src/pager.c b/src/pager.c
index 83d458bc5..874333c74 100644
--- a/src/pager.c
+++ b/src/pager.c
@@ -18,7 +18,7 @@
 ** file simultaneously, or one process from reading the database while
 ** another is writing.
 **
-** @(#) $Id: pager.c,v 1.323 2007/04/05 17:15:53 danielk1977 Exp $
+** @(#) $Id: pager.c,v 1.324 2007/04/06 18:23:18 drh Exp $
 */
 #ifndef SQLITE_OMIT_DISKIO
 #include "sqliteInt.h"
@@ -2508,8 +2508,12 @@ static PgHdr *pager_get_all_dirty_pages(Pager *pPager){
 */
 static int hasHotJournal(Pager *pPager){
   if( !pPager->useJournal ) return 0;
-  if( !sqlite3OsFileExists(pPager->zJournal) ) return 0;
-  if( sqlite3OsCheckReservedLock(pPager->fd) ) return 0;
+  if( !sqlite3OsFileExists(pPager->zJournal) ){
+    return 0;
+  }
+  if( sqlite3OsCheckReservedLock(pPager->fd) ){
+    return 0;
+  }
   if( sqlite3PagerPagecount(pPager)==0 ){
     sqlite3OsDelete(pPager->zJournal);
     return 0;