提交 c9c64155 编写于 作者: C Cyrill Gorcunov 提交者: Linus Torvalds

UDF: check for allocated memory for data of new inodes

Add checking for granted memory for inode data at the moment of its
creation.
Signed-off-by: NCyrill Gorcunov <gorcunov@gmail.com>
Cc: Jan Kara <jack@ucw.cz>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 d6214141
......@@ -50,7 +50,7 @@ void udf_free_inode(struct inode * inode)
else
UDF_SB_LVIDIU(sb)->numFiles =
cpu_to_le32(le32_to_cpu(UDF_SB_LVIDIU(sb)->numFiles) - 1);
mark_buffer_dirty(sbi->s_lvidbh);
}
mutex_unlock(&sbi->s_alloc_mutex);
......@@ -136,6 +136,13 @@ struct inode * udf_new_inode (struct inode *dir, int mode, int * err)
UDF_I_EFE(inode) = 0;
UDF_I_DATA(inode) = kzalloc(inode->i_sb->s_blocksize - sizeof(struct fileEntry), GFP_KERNEL);
}
if (!UDF_I_DATA(inode))
{
iput(inode);
*err = -ENOMEM;
mutex_unlock(&sbi->s_alloc_mutex);
return NULL;
}
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB))
UDF_I_ALLOCTYPE(inode) = ICBTAG_FLAG_AD_IN_ICB;
else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
......
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