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Avoid potential crashes when there is no handle table.

This commit is contained in:
Alexandre Julliard 2005-07-13 12:09:49 +00:00
parent 7258914ef6
commit c976db1a03
1 changed files with 8 additions and 5 deletions
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13
server/handle.c
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@ -221,12 +221,14 @@ static obj_handle_t alloc_entry( struct handle_table *table, void *obj, unsigned
/* return the handle, or 0 on error */ /* return the handle, or 0 on error */
obj_handle_t alloc_handle( struct process *process, void *obj, unsigned int access, int inherit ) obj_handle_t alloc_handle( struct process *process, void *obj, unsigned int access, int inherit )
{ {
struct handle_table *table = process->handles; access &= ~RESERVED_ALL;
assert( table );
assert( !(access & RESERVED_ALL) );
if (inherit) access |= RESERVED_INHERIT; if (inherit) access |= RESERVED_INHERIT;
return alloc_entry( table, obj, access ); if (!process->handles)
{
set_error( STATUS_NO_MEMORY );
return 0;
}
return alloc_entry( process->handles, obj, access );
} }
/* allocate a global handle for an object, incrementing its refcount */ /* allocate a global handle for an object, incrementing its refcount */
@ -530,6 +532,7 @@ obj_handle_t open_object( const struct namespace *namespace, const WCHAR *name,
/* return the size of the handle table of a given process */ /* return the size of the handle table of a given process */
unsigned int get_handle_table_count( struct process *process ) unsigned int get_handle_table_count( struct process *process )
{ {
if (!process->handles) return 0;
return process->handles->count; return process->handles->count;
} }