#define dprintf(x...)
#endif
-void dump_imap(const char *prefix, struct super_block * s);
+void dump_imap(const char *prefix, struct super_block *s);
-static void bfs_read_inode(struct inode * inode)
+struct inode *bfs_iget(struct super_block *sb, unsigned long ino)
{
- unsigned long ino = inode->i_ino;
- struct bfs_inode * di;
- struct buffer_head * bh;
+ struct bfs_inode *di;
+ struct inode *inode;
+ struct buffer_head *bh;
int block, off;
- if (ino < BFS_ROOT_INO || ino > BFS_SB(inode->i_sb)->si_lasti) {
+ inode = iget_locked(sb, ino);
+ if (IS_ERR(inode))
+ return ERR_PTR(-ENOMEM);
+ if (!(inode->i_state & I_NEW))
+ return inode;
+
+ if ((ino < BFS_ROOT_INO) || (ino > BFS_SB(inode->i_sb)->si_lasti)) {
printf("Bad inode number %s:%08lx\n", inode->i_sb->s_id, ino);
- make_bad_inode(inode);
- return;
+ goto error;
}
- block = (ino - BFS_ROOT_INO)/BFS_INODES_PER_BLOCK + 1;
+ block = (ino - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
bh = sb_bread(inode->i_sb, block);
if (!bh) {
- printf("Unable to read inode %s:%08lx\n", inode->i_sb->s_id, ino);
- make_bad_inode(inode);
- return;
+ printf("Unable to read inode %s:%08lx\n", inode->i_sb->s_id,
+ ino);
+ goto error;
}
off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
di = (struct bfs_inode *)bh->b_data + off;
- inode->i_mode = 0x0000FFFF & le32_to_cpu(di->i_mode);
+ inode->i_mode = 0x0000FFFF & le32_to_cpu(di->i_mode);
if (le32_to_cpu(di->i_vtype) == BFS_VDIR) {
inode->i_mode |= S_IFDIR;
inode->i_op = &bfs_dir_inops;
BFS_I(inode)->i_sblock = le32_to_cpu(di->i_sblock);
BFS_I(inode)->i_eblock = le32_to_cpu(di->i_eblock);
+ BFS_I(inode)->i_dsk_ino = le16_to_cpu(di->i_ino);
inode->i_uid = le32_to_cpu(di->i_uid);
inode->i_gid = le32_to_cpu(di->i_gid);
inode->i_nlink = le32_to_cpu(di->i_nlink);
inode->i_size = BFS_FILESIZE(di);
inode->i_blocks = BFS_FILEBLOCKS(di);
- if (inode->i_size || inode->i_blocks) dprintf("Registered inode with %lld size, %ld blocks\n", inode->i_size, inode->i_blocks);
inode->i_atime.tv_sec = le32_to_cpu(di->i_atime);
inode->i_mtime.tv_sec = le32_to_cpu(di->i_mtime);
inode->i_ctime.tv_sec = le32_to_cpu(di->i_ctime);
inode->i_atime.tv_nsec = 0;
inode->i_mtime.tv_nsec = 0;
inode->i_ctime.tv_nsec = 0;
- BFS_I(inode)->i_dsk_ino = le16_to_cpu(di->i_ino); /* can be 0 so we store a copy */
brelse(bh);
+ unlock_new_inode(inode);
+ return inode;
+
+error:
+ iget_failed(inode);
+ return ERR_PTR(-EIO);
}
-static int bfs_write_inode(struct inode * inode, int unused)
+static int bfs_write_inode(struct inode *inode, int unused)
{
unsigned int ino = (u16)inode->i_ino;
unsigned long i_sblock;
- struct bfs_inode * di;
- struct buffer_head * bh;
+ struct bfs_inode *di;
+ struct buffer_head *bh;
int block, off;
dprintf("ino=%08x\n", ino);
- if (ino < BFS_ROOT_INO || ino > BFS_SB(inode->i_sb)->si_lasti) {
+ if ((ino < BFS_ROOT_INO) || (ino > BFS_SB(inode->i_sb)->si_lasti)) {
printf("Bad inode number %s:%08x\n", inode->i_sb->s_id, ino);
return -EIO;
}
lock_kernel();
- block = (ino - BFS_ROOT_INO)/BFS_INODES_PER_BLOCK + 1;
+ block = (ino - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
bh = sb_bread(inode->i_sb, block);
if (!bh) {
- printf("Unable to read inode %s:%08x\n", inode->i_sb->s_id, ino);
+ printf("Unable to read inode %s:%08x\n",
+ inode->i_sb->s_id, ino);
unlock_kernel();
return -EIO;
}
- off = (ino - BFS_ROOT_INO)%BFS_INODES_PER_BLOCK;
+ off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
di = (struct bfs_inode *)bh->b_data + off;
if (ino == BFS_ROOT_INO)
di->i_eoffset = cpu_to_le32(i_sblock * BFS_BSIZE + inode->i_size - 1);
mark_buffer_dirty(bh);
- dprintf("Written ino=%d into %d:%d\n",le16_to_cpu(di->i_ino),block,off);
brelse(bh);
unlock_kernel();
return 0;
}
-static void bfs_delete_inode(struct inode * inode)
+static void bfs_delete_inode(struct inode *inode)
{
unsigned long ino = inode->i_ino;
- struct bfs_inode * di;
- struct buffer_head * bh;
+ struct bfs_inode *di;
+ struct buffer_head *bh;
int block, off;
- struct super_block * s = inode->i_sb;
- struct bfs_sb_info * info = BFS_SB(s);
- struct bfs_inode_info * bi = BFS_I(inode);
+ struct super_block *s = inode->i_sb;
+ struct bfs_sb_info *info = BFS_SB(s);
+ struct bfs_inode_info *bi = BFS_I(inode);
dprintf("ino=%08lx\n", ino);
truncate_inode_pages(&inode->i_data, 0);
- if (ino < BFS_ROOT_INO || ino > info->si_lasti) {
+ if ((ino < BFS_ROOT_INO) || (ino > info->si_lasti)) {
printf("invalid ino=%08lx\n", ino);
return;
}
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
lock_kernel();
mark_inode_dirty(inode);
- block = (ino - BFS_ROOT_INO)/BFS_INODES_PER_BLOCK + 1;
+
+ block = (ino - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
bh = sb_bread(s, block);
if (!bh) {
- printf("Unable to read inode %s:%08lx\n", inode->i_sb->s_id, ino);
+ printf("Unable to read inode %s:%08lx\n",
+ inode->i_sb->s_id, ino);
unlock_kernel();
return;
}
- off = (ino - BFS_ROOT_INO)%BFS_INODES_PER_BLOCK;
- di = (struct bfs_inode *) bh->b_data + off;
+ off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
+ di = (struct bfs_inode *)bh->b_data + off;
+ memset((void *)di, 0, sizeof(struct bfs_inode));
+ mark_buffer_dirty(bh);
+ brelse(bh);
+
if (bi->i_dsk_ino) {
- info->si_freeb += 1 + bi->i_eblock - bi->i_sblock;
+ if (bi->i_sblock)
+ info->si_freeb += bi->i_eblock + 1 - bi->i_sblock;
info->si_freei++;
clear_bit(ino, info->si_imap);
dump_imap("delete_inode", s);
}
- di->i_ino = 0;
- di->i_sblock = 0;
- mark_buffer_dirty(bh);
- brelse(bh);
- /* if this was the last file, make the previous
- block "last files last block" even if there is no real file there,
- saves us 1 gap */
- if (info->si_lf_eblk == BFS_I(inode)->i_eblock) {
- info->si_lf_eblk = BFS_I(inode)->i_sblock - 1;
+ /*
+ * If this was the last file, make the previous block
+ * "last block of the last file" even if there is no
+ * real file there, saves us 1 gap.
+ */
+ if (info->si_lf_eblk == bi->i_eblock) {
+ info->si_lf_eblk = bi->i_sblock - 1;
mark_buffer_dirty(info->si_sbh);
}
unlock_kernel();
unlock_kernel();
}
-static struct kmem_cache * bfs_inode_cachep;
+static struct kmem_cache *bfs_inode_cachep;
static struct inode *bfs_alloc_inode(struct super_block *sb)
{
kmem_cache_free(bfs_inode_cachep, BFS_I(inode));
}
-static void init_once(void * foo, struct kmem_cache * cachep, unsigned long flags)
+static void init_once(struct kmem_cache *cachep, void *foo)
{
struct bfs_inode_info *bi = foo;
static const struct super_operations bfs_sops = {
.alloc_inode = bfs_alloc_inode,
.destroy_inode = bfs_destroy_inode,
- .read_inode = bfs_read_inode,
.write_inode = bfs_write_inode,
.delete_inode = bfs_delete_inode,
.put_super = bfs_put_super,
.statfs = bfs_statfs,
};
-void dump_imap(const char *prefix, struct super_block * s)
+void dump_imap(const char *prefix, struct super_block *s)
{
#ifdef DEBUG
int i;
if (!tmpbuf)
return;
- for (i=BFS_SB(s)->si_lasti; i>=0; i--) {
- if (i > PAGE_SIZE-100) break;
+ for (i = BFS_SB(s)->si_lasti; i >= 0; i--) {
+ if (i > PAGE_SIZE - 100) break;
if (test_bit(i, BFS_SB(s)->si_imap))
strcat(tmpbuf, "1");
else
strcat(tmpbuf, "0");
}
- printk(KERN_ERR "BFS-fs: %s: lasti=%08lx <%s>\n", prefix, BFS_SB(s)->si_lasti, tmpbuf);
+ printf("BFS-fs: %s: lasti=%08lx <%s>\n",
+ prefix, BFS_SB(s)->si_lasti, tmpbuf);
free_page((unsigned long)tmpbuf);
#endif
}
static int bfs_fill_super(struct super_block *s, void *data, int silent)
{
- struct buffer_head * bh;
- struct bfs_super_block * bfs_sb;
- struct inode * inode;
+ struct buffer_head *bh;
+ struct bfs_super_block *bfs_sb;
+ struct inode *inode;
unsigned i, imap_len;
- struct bfs_sb_info * info;
+ struct bfs_sb_info *info;
+ long ret = -EINVAL;
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info)
s->s_magic = BFS_MAGIC;
info->si_sbh = bh;
- info->si_lasti = (le32_to_cpu(bfs_sb->s_start) - BFS_BSIZE)/sizeof(struct bfs_inode)
- + BFS_ROOT_INO - 1;
-
- imap_len = info->si_lasti/8 + 1;
+ info->si_lasti = (le32_to_cpu(bfs_sb->s_start) - BFS_BSIZE) /
+ sizeof(struct bfs_inode)
+ + BFS_ROOT_INO - 1;
+ imap_len = (info->si_lasti / 8) + 1;
info->si_imap = kzalloc(imap_len, GFP_KERNEL);
if (!info->si_imap)
goto out;
- for (i=0; i<BFS_ROOT_INO; i++)
+ for (i = 0; i < BFS_ROOT_INO; i++)
set_bit(i, info->si_imap);
s->s_op = &bfs_sops;
- inode = iget(s, BFS_ROOT_INO);
- if (!inode) {
+ inode = bfs_iget(s, BFS_ROOT_INO);
+ if (IS_ERR(inode)) {
+ ret = PTR_ERR(inode);
kfree(info->si_imap);
goto out;
}
s->s_root = d_alloc_root(inode);
if (!s->s_root) {
iput(inode);
+ ret = -ENOMEM;
kfree(info->si_imap);
goto out;
}
- info->si_blocks = (le32_to_cpu(bfs_sb->s_end) + 1)>>BFS_BSIZE_BITS; /* for statfs(2) */
- info->si_freeb = (le32_to_cpu(bfs_sb->s_end) + 1 - le32_to_cpu(bfs_sb->s_start))>>BFS_BSIZE_BITS;
+ info->si_blocks = (le32_to_cpu(bfs_sb->s_end) + 1) >> BFS_BSIZE_BITS;
+ info->si_freeb = (le32_to_cpu(bfs_sb->s_end) + 1
+ - le32_to_cpu(bfs_sb->s_start)) >> BFS_BSIZE_BITS;
info->si_freei = 0;
info->si_lf_eblk = 0;
- info->si_lf_sblk = 0;
- info->si_lf_ioff = 0;
bh = NULL;
- for (i=BFS_ROOT_INO; i<=info->si_lasti; i++) {
+ for (i = BFS_ROOT_INO; i <= info->si_lasti; i++) {
struct bfs_inode *di;
- int block = (i - BFS_ROOT_INO)/BFS_INODES_PER_BLOCK + 1;
+ int block = (i - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
int off = (i - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
unsigned long sblock, eblock;
sblock = le32_to_cpu(di->i_sblock);
eblock = le32_to_cpu(di->i_eblock);
- if (eblock > info->si_lf_eblk) {
+ if (eblock > info->si_lf_eblk)
info->si_lf_eblk = eblock;
- info->si_lf_sblk = sblock;
- info->si_lf_ioff = BFS_INO2OFF(i);
- }
}
brelse(bh);
if (!(s->s_flags & MS_RDONLY)) {
brelse(bh);
kfree(info);
s->s_fs_info = NULL;
- return -EINVAL;
+ return ret;
}
static int bfs_get_sb(struct file_system_type *fs_type,
git.openpandora.org / pandora-kernel.git / blobdiff