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[PATCHv2,6/9] UBIFS: improve assertion in node comparison functions

Message ID 1281261452-9868-7-git-send-email-dedekind1@gmail.com
State Accepted
Commit 66576833f5396af34c52160b16d7b8573199282a
Headers show

Commit Message

Artem Bityutskiy Aug. 8, 2010, 9:57 a.m. UTC 
From: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

Improve assertions in gc.c in the comparison functions for 'list_sort()': check
key types _and_ node types.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
---
 fs/ubifs/gc.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)
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Patch

diff --git a/fs/ubifs/gc.c b/fs/ubifs/gc.c
index f2be055..8dbe36f 100644
--- a/fs/ubifs/gc.c
+++ b/fs/ubifs/gc.c
@@ -127,8 +127,11 @@  int data_nodes_cmp(void *priv, struct list_head *a, struct list_head *b)
 	cond_resched();
 	sa = list_entry(a, struct ubifs_scan_node, list);
 	sb = list_entry(b, struct ubifs_scan_node, list);
+
 	ubifs_assert(key_type(c, &sa->key) == UBIFS_DATA_KEY);
 	ubifs_assert(key_type(c, &sb->key) == UBIFS_DATA_KEY);
+	ubifs_assert(sa->type == UBIFS_DATA_NODE);
+	ubifs_assert(sb->type == UBIFS_DATA_NODE);
 
 	inuma = key_inum(c, &sa->key);
 	inumb = key_inum(c, &sb->key);
@@ -164,6 +167,9 @@  int nondata_nodes_cmp(void *priv, struct list_head *a, struct list_head *b)
 	cond_resched();
 	sa = list_entry(a, struct ubifs_scan_node, list);
 	sb = list_entry(b, struct ubifs_scan_node, list);
+
+	ubifs_assert(key_type(c, &sa->key) != UBIFS_DATA_KEY &&
+		     key_type(c, &sb->key) != UBIFS_DATA_KEY);
 	ubifs_assert(sa->type != UBIFS_DATA_NODE &&
 		     sb->type != UBIFS_DATA_NODE);
 
@@ -176,10 +182,15 @@  int nondata_nodes_cmp(void *priv, struct list_head *a, struct list_head *b)
 	if (sb->type == UBIFS_INO_NODE)
 		return 1;
 
+	ubifs_assert(key_type(c, &sa->key) == UBIFS_DENT_KEY ||
+		     key_type(c, &sa->key) == UBIFS_XENT_KEY);
+	ubifs_assert(key_type(c, &sb->key) == UBIFS_DENT_KEY ||
+		     key_type(c, &sb->key) == UBIFS_XENT_KEY);
 	ubifs_assert(sa->type == UBIFS_DENT_NODE ||
 		     sa->type == UBIFS_XENT_NODE);
 	ubifs_assert(sb->type == UBIFS_DENT_NODE ||
 		     sb->type == UBIFS_XENT_NODE);
+
 	inuma = key_inum(c, &sa->key);
 	inumb = key_inum(c, &sb->key);