diff options
Diffstat (limited to 'fs/minix/inode.c')
| -rw-r--r-- | fs/minix/inode.c | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/fs/minix/inode.c b/fs/minix/inode.c index 64cdcd662ff..fa8b612b8ce 100644 --- a/fs/minix/inode.c +++ b/fs/minix/inode.c @@ -71,7 +71,6 @@ static struct inode *minix_alloc_inode(struct super_block *sb) static void minix_i_callback(struct rcu_head *head) { struct inode *inode = container_of(head, struct inode, i_rcu); - INIT_LIST_HEAD(&inode->i_dentry); kmem_cache_free(minix_inode_cachep, minix_i(inode)); } @@ -263,6 +262,26 @@ static int minix_fill_super(struct super_block *s, void *data, int silent) goto out_no_root; } + /* Apparently minix can create filesystems that allocate more blocks for + * the bitmaps than needed. We simply ignore that, but verify it didn't + * create one with not enough blocks and bail out if so. + */ + block = minix_blocks_needed(sbi->s_ninodes, s->s_blocksize); + if (sbi->s_imap_blocks < block) { + printk("MINIX-fs: file system does not have enough " + "imap blocks allocated. Refusing to mount\n"); + goto out_iput; + } + + block = minix_blocks_needed( + (sbi->s_nzones - (sbi->s_firstdatazone + 1)), + s->s_blocksize); + if (sbi->s_zmap_blocks < block) { + printk("MINIX-fs: file system does not have enough " + "zmap blocks allocated. Refusing to mount.\n"); + goto out_iput; + } + ret = -ENOMEM; s->s_root = d_alloc_root(root_inode); if (!s->s_root) @@ -276,9 +295,10 @@ static int minix_fill_super(struct super_block *s, void *data, int silent) if (!(sbi->s_mount_state & MINIX_VALID_FS)) printk("MINIX-fs: mounting unchecked file system, " "running fsck is recommended\n"); - else if (sbi->s_mount_state & MINIX_ERROR_FS) + else if (sbi->s_mount_state & MINIX_ERROR_FS) printk("MINIX-fs: mounting file system with errors, " "running fsck is recommended\n"); + return 0; out_iput: @@ -339,10 +359,10 @@ static int minix_statfs(struct dentry *dentry, struct kstatfs *buf) buf->f_type = sb->s_magic; buf->f_bsize = sb->s_blocksize; buf->f_blocks = (sbi->s_nzones - sbi->s_firstdatazone) << sbi->s_log_zone_size; - buf->f_bfree = minix_count_free_blocks(sbi); + buf->f_bfree = minix_count_free_blocks(sb); buf->f_bavail = buf->f_bfree; buf->f_files = sbi->s_ninodes; - buf->f_ffree = minix_count_free_inodes(sbi); + buf->f_ffree = minix_count_free_inodes(sb); buf->f_namelen = sbi->s_namelen; buf->f_fsid.val[0] = (u32)id; buf->f_fsid.val[1] = (u32)(id >> 32); |