ppdev: wrap ioctl handler in driver and push lock down

[linux-2.6-omap-h63xx.git] / kernel / auditsc.c

diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 091409996577dac43506aadef870ead32e88397c..4699950e65bd46a06e58a330c75f01ddff3f3d28 100644 (file)
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -280,6 +280,19 @@ static int audit_match_perm(struct audit_context *ctx, int mask)
        }
 }
 
+static int audit_match_filetype(struct audit_context *ctx, int which)
+{
+       unsigned index = which & ~S_IFMT;
+       mode_t mode = which & S_IFMT;
+       if (index >= ctx->name_count)
+               return 0;
+       if (ctx->names[index].ino == -1)
+               return 0;
+       if ((ctx->names[index].mode ^ mode) & S_IFMT)
+               return 0;
+       return 1;
+}
+
 /*
  * We keep a linked list of fixed-sized (31 pointer) arrays of audit_chunk *;
  * ->first_trees points to its beginning, ->trees - to the current end of data.
@@ -589,6 +602,9 @@ static int audit_filter_rules(struct task_struct *tsk,
                case AUDIT_PERM:
                        result = audit_match_perm(ctx, f->val);
                        break;
+               case AUDIT_FILETYPE:
+                       result = audit_match_filetype(ctx, f->val);
+                       break;
                }
 
                if (!result)
@@ -1460,7 +1476,8 @@ void audit_syscall_entry(int arch, int major,
        struct audit_context *context = tsk->audit_context;
        enum audit_state     state;
 
-       BUG_ON(!context);
+       if (unlikely(!context))
+               return;
 
        /*
         * This happens only on certain architectures that make system