Alexandre Julliard : server: Limit the number of allocated handles before running out of memory.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 9434e1996513c02861969fb4b766ab837587c4c1
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=9434e1996513c02861969fb4b7...

Author: Alexandre Julliard 
Date:   Thu Dec  4 16:12:04 2008 +0100

server: Limit the number of allocated handles before running out of memory.

---

server/handle.c |   10 +++++-----
 server/trace.c  |    1 +
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/server/handle.c b/server/handle.c
index 29214d6..37cfa9b 100644
--- a/server/handle.c
+++ b/server/handle.c
@@ -64,6 +64,7 @@ static struct handle_table *global_table;
 #define RESERVED_ALL           (RESERVED_INHERIT | RESERVED_CLOSE_PROTECT)

#define MIN_HANDLE_ENTRIES  32
+#define MAX_HANDLE_ENTRIES  0x00ffffff

/* handle to table index conversion */
@@ -191,13 +192,12 @@ struct handle_table *alloc_handle_table( struct process *process, int count )
 static int grow_handle_table( struct handle_table *table )
 {
     struct handle_entry *new_entries;
-    int count = table->count;
+    int count = min( table->count * 2, MAX_HANDLE_ENTRIES );

-    if (count >= INT_MAX / 2) return 0;
-    count *= 2;
-    if (!(new_entries = realloc( table->entries, count * sizeof(struct handle_entry) )))
+    if (count == table->count ||
+        !(new_entries = realloc( table->entries, count * sizeof(struct handle_entry) )))
     {
-        set_error( STATUS_NO_MEMORY );
+        set_error( STATUS_INSUFFICIENT_RESOURCES );
         return 0;
     }
     table->entries = new_entries;
diff --git a/server/trace.c b/server/trace.c
index 8b6e622..dfbddac 100644
--- a/server/trace.c
+++ b/server/trace.c
@@ -4582,6 +4582,7 @@ static const struct
     { "HANDLE_NOT_CLOSABLE",         STATUS_HANDLE_NOT_CLOSABLE },
     { "ILLEGAL_FUNCTION",            STATUS_ILLEGAL_FUNCTION },
     { "INSTANCE_NOT_AVAILABLE",      STATUS_INSTANCE_NOT_AVAILABLE },
+    { "INSUFFICIENT_RESOURCES",      STATUS_INSUFFICIENT_RESOURCES },
     { "INVALID_CID",                 STATUS_INVALID_CID },
     { "INVALID_DEVICE_REQUEST",      STATUS_INVALID_DEVICE_REQUEST },
     { "INVALID_FILE_FOR_SECTION",    STATUS_INVALID_FILE_FOR_SECTION },