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authorMarcin Slusarz <marcin.slusarz@gmail.com>2008-02-08 04:20:32 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-08 09:22:35 -0800
commitdc5d39be6dfb54a50c8ee1f6154b10181c974db1 (patch)
treea2bdb6bf78439db84df007b61c33bfdc95501f99
parent6c79e987d629cb0f8f7e2983725f4434a2dec66b (diff)
udf: convert UDF_SB_ALLOC_PARTMAPS macro to udf_sb_alloc_partition_maps function
- convert UDF_SB_ALLOC_PARTMAPS macro to udf_sb_alloc_partition_maps function - convert kmalloc + memset to kcalloc - check if kcalloc failed (partially) Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Ben Fennema <bfennema@falcon.csc.calpoly.edu> Cc: Jan Kara <jack@suse.cz> Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/udf/super.c25
-rw-r--r--fs/udf/udf_sb.h13
2 files changed, 23 insertions, 15 deletions
diff --git a/fs/udf/super.c b/fs/udf/super.c
index 0ca2deb5b99..4d1e197164b 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -52,6 +52,7 @@
#include <linux/buffer_head.h>
#include <linux/vfs.h>
#include <linux/vmalloc.h>
+#include <linux/errno.h>
#include <asm/byteorder.h>
#include <linux/udf_fs.h>
@@ -226,6 +227,24 @@ static void __exit exit_udf_fs(void)
module_init(init_udf_fs)
module_exit(exit_udf_fs)
+static int udf_sb_alloc_partition_maps(struct super_block *sb, u32 count)
+{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+
+ sbi->s_partmaps = kcalloc(count, sizeof(struct udf_part_map),
+ GFP_KERNEL);
+ if (!sbi->s_partmaps) {
+ udf_error(sb, __FUNCTION__,
+ "Unable to allocate space for %d partition maps",
+ count);
+ sbi->s_partitions = 0;
+ return -ENOMEM;
+ }
+
+ sbi->s_partitions = count;
+ return 0;
+}
+
/*
* udf_parse_options
*
@@ -1037,7 +1056,9 @@ static int udf_load_logicalvol(struct super_block *sb, struct buffer_head *bh,
lvd = (struct logicalVolDesc *)bh->b_data;
- UDF_SB_ALLOC_PARTMAPS(sb, le32_to_cpu(lvd->numPartitionMaps));
+ i = udf_sb_alloc_partition_maps(sb, le32_to_cpu(lvd->numPartitionMaps));
+ if (i != 0)
+ return i;
for (i = 0, offset = 0;
i < sbi->s_partitions && offset < le32_to_cpu(lvd->mapTableLength);
@@ -1242,7 +1263,7 @@ static int udf_process_sequence(struct super_block *sb, long block,
if (i == VDS_POS_PRIMARY_VOL_DESC) {
udf_load_pvoldesc(sb, bh);
} else if (i == VDS_POS_LOGICAL_VOL_DESC) {
- udf_load_logicalvol(sb, bh, fileset);
+ udf_load_logicalvol(sb, bh, fileset); /* TODO: check return value */
} else if (i == VDS_POS_PARTITION_DESC) {
struct buffer_head *bh2 = NULL;
if (udf_load_partdesc(sb, bh)) {
diff --git a/fs/udf/udf_sb.h b/fs/udf/udf_sb.h
index 92e6d75b016..4d3bd77ea94 100644
--- a/fs/udf/udf_sb.h
+++ b/fs/udf/udf_sb.h
@@ -43,19 +43,6 @@ static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi);
-#define UDF_SB_ALLOC_PARTMAPS(X,Y)\
-{\
- struct udf_sb_info *sbi = UDF_SB(X);\
- sbi->s_partmaps = kmalloc(sizeof(struct udf_part_map) * Y, GFP_KERNEL);\
- if (sbi->s_partmaps != NULL) {\
- sbi->s_partitions = Y;\
- memset(sbi->s_partmaps, 0x00, sizeof(struct udf_part_map) * Y);\
- } else {\
- sbi->s_partitions = 0;\
- udf_error(X, __FUNCTION__, "Unable to allocate space for %d partition maps", Y);\
- }\
-}
-
#define UDF_SB_ALLOC_BITMAP(X,Y,Z)\
{\
struct udf_sb_info *sbi = UDF_SB(X);\