X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=fs%2Fcramfs%2Finode.c;h=6db03fb089dcaa3fdd2dc43d1784e158e3ec4ea7;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=abc60b78122548010cc43bb363692ea67700d46f;hpb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;p=linux-2.6.git

diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
index abc60b781..6db03fb08 100644
--- a/fs/cramfs/inode.c
+++ b/fs/cramfs/inode.c
@@ -241,11 +241,10 @@ static int cramfs_fill_super(struct super_block *sb, void *data, int silent)
 
 	sb->s_flags |= MS_RDONLY;
 
-	sbi = kmalloc(sizeof(struct cramfs_sb_info), GFP_KERNEL);
+	sbi = kzalloc(sizeof(struct cramfs_sb_info), GFP_KERNEL);
 	if (!sbi)
 		return -ENOMEM;
 	sb->s_fs_info = sbi;
-	memset(sbi, 0, sizeof(struct cramfs_sb_info));
 
 	/* Invalidate the read buffers on mount: think disk change.. */
 	mutex_lock(&read_mutex);
@@ -339,7 +338,7 @@ static int cramfs_statfs(struct dentry *dentry, struct kstatfs *buf)
  */
 static int cramfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 {
-	struct inode *inode = filp->f_dentry->d_inode;
+	struct inode *inode = filp->f_path.dentry->d_inode;
 	struct super_block *sb = inode->i_sb;
 	char *buf;
 	unsigned int offset;
@@ -482,6 +481,8 @@ static int cramfs_readpage(struct file *file, struct page * page)
 		pgdata = kmap(page);
 		if (compr_len == 0)
 			; /* hole */
+		else if (compr_len > (PAGE_CACHE_SIZE << 1))
+			printk(KERN_ERR "cramfs: bad compressed blocksize %u\n", compr_len);
 		else {
 			mutex_lock(&read_mutex);
 			bytes_filled = cramfs_uncompress_block(pgdata,
@@ -544,8 +545,15 @@ static struct file_system_type cramfs_fs_type = {
 
 static int __init init_cramfs_fs(void)
 {
-	cramfs_uncompress_init();
-	return register_filesystem(&cramfs_fs_type);
+	int rv;
+
+	rv = cramfs_uncompress_init();
+	if (rv < 0)
+		return rv;
+	rv = register_filesystem(&cramfs_fs_type);
+	if (rv < 0)
+		cramfs_uncompress_exit();
+	return rv;
 }
 
 static void __exit exit_cramfs_fs(void)