diff options
Diffstat (limited to 'fs/udf/super.c')
| -rw-r--r-- | fs/udf/super.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/fs/udf/super.c b/fs/udf/super.c index 0ca2deb5b992..4d1e197164b7 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)) { |