linux-ext4 - [PATCH 6/6] quotaio: annotate & fix up for sparse endian checker

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Message-ID: <5449734D.4030705@redhat.com>
Date:	Thu, 23 Oct 2014 16:29:49 -0500
From:	Eric Sandeen <sandeen@...hat.com>
To:	ext4 development <linux-ext4@...r.kernel.org>
Subject: [PATCH 6/6] quotaio: annotate & fix up for sparse endian checker

Signed-off-by: Eric Sandeen <sandeen@...hat.com>
---
 lib/quota/quotaio_tree.c |   10 +++++-----
 lib/quota/quotaio_v2.c   |    7 ++++---
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/lib/quota/quotaio_tree.c b/lib/quota/quotaio_tree.c
index 4d7a9ab..e7f3e95 100644
--- a/lib/quota/quotaio_tree.c
+++ b/lib/quota/quotaio_tree.c
@@ -254,7 +254,7 @@ static int do_insert_tree(struct quota_handle *h, struct dquot *dquot,
 {
 	dqbuf_t buf;
 	int newson = 0, newact = 0;
-	__u32 *ref;
+	__le32 *ref;
 	unsigned int newblk;
 	int ret = 0;
 
@@ -274,7 +274,7 @@ static int do_insert_tree(struct quota_handle *h, struct dquot *dquot,
 		read_blk(h, *treeblk, buf);
 	}
 
-	ref = (__u32 *) buf;
+	ref = (__le32 *) buf;
 	newblk = ext2fs_le32_to_cpu(ref[get_index(dquot->dq_id, depth)]);
 	if (!newblk)
 		newson = 1;
@@ -397,7 +397,7 @@ static void remove_tree(struct quota_handle *h, struct dquot *dquot,
 {
 	dqbuf_t buf = getdqbuf();
 	unsigned int newblk;
-	__u32 *ref = (__u32 *) buf;
+	__le32 *ref = (__le32 *) buf;
 
 	if (!buf)
 		return;
@@ -473,7 +473,7 @@ static ext2_loff_t find_tree_dqentry(struct quota_handle *h,
 {
 	dqbuf_t buf = getdqbuf();
 	ext2_loff_t ret = 0;
-	__u32 *ref = (__u32 *) buf;
+	__le32 *ref = (__le32 *) buf;
 
 	if (!buf)
 		return -ENOMEM;
@@ -597,7 +597,7 @@ static int report_tree(struct dquot *dquot, unsigned int blk, int depth,
 {
 	int entries = 0, i;
 	dqbuf_t buf = getdqbuf();
-	__u32 *ref = (__u32 *) buf;
+	__le32 *ref = (__le32 *) buf;
 
 	if (!buf)
 		return 0;
diff --git a/lib/quota/quotaio_v2.c b/lib/quota/quotaio_v2.c
index e7bf29c..504b3ea 100644
--- a/lib/quota/quotaio_v2.c
+++ b/lib/quota/quotaio_v2.c
@@ -151,6 +151,7 @@ static int v2_check_file(struct quota_handle *h, int type, int fmt)
 {
 	struct v2_disk_dqheader dqh;
 	int file_magics[] = INITQMAGICS;
+	int be_magic;
 
 	if (fmt != QFMT_VFS_V1)
 		return 0;
@@ -158,9 +159,9 @@ static int v2_check_file(struct quota_handle *h, int type, int fmt)
 	if (!v2_read_header(h, &dqh))
 		return 0;
 
-	if (ext2fs_le32_to_cpu(dqh.dqh_magic) != file_magics[type]) {
-		if (ext2fs_be32_to_cpu(dqh.dqh_magic) == file_magics[type])
-			log_err("Your quota file is stored in wrong endianity");
+	be_magic = ext2fs_be32_to_cpu((__force __be32)dqh.dqh_magic);
+	if (be_magic == file_magics[type]) {
+		log_err("Your quota file is stored in wrong endianity");
 		return 0;
 	}
 	if (V2_VERSION != ext2fs_le32_to_cpu(dqh.dqh_version))
-- 1.7.1

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