/*
* Different types of UFS hold fs_cstotal in different
* places, and use different data structure for it.
* To make things simpler we just copy fs_cstotal to ufs_sb_private_info
*/
static void ufs_setup_cstotal(struct super_block *sb)
{
struct ufs_sb_info *sbi = UFS_SB(sb);
struct ufs_sb_private_info *uspi = sbi->s_uspi;
struct ufs_super_block_first *usb1;
struct ufs_super_block_second *usb2;
struct ufs_super_block_third *usb3;
unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
UFSD("ENTER, mtype=%u\n", mtype);
usb1 = ubh_get_usb_first(uspi);
usb2 = ubh_get_usb_second(uspi);
usb3 = ubh_get_usb_third(uspi);
if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
(usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
mtype == UFS_MOUNT_UFSTYPE_UFS2) {
/*we have statistic in different place, then usual*/
uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir);
uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree);
uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree);
uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree);
} else {
uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir);
uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree);
uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree);
uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree);
}
UFSD("EXIT\n");
}
/**
* befs_find_key - Search for a key within a node
* @sb: Filesystem superblock
* @node: Node to find the key within
* @findkey: Keystring to search for
* @value: If key is found, the value stored with the key is put here
*
* Finds exact match if one exists, and returns BEFS_BT_MATCH.
* If there is no match and node's value array is too small for key, return
* BEFS_BT_OVERFLOW.
* If no match and node should countain this key, return BEFS_BT_NOT_FOUND.
*
* Uses binary search instead of a linear.
*/
static int
befs_find_key(struct super_block *sb, struct befs_btree_node *node,
const char *findkey, befs_off_t * value)
{
int first, last, mid;
int eq;
u16 keylen;
int findkey_len;
char *thiskey;
fs64 *valarray;
befs_debug(sb, "---> %s %s", __func__, findkey);
findkey_len = strlen(findkey);
/* if node can not contain key, just skip this node */
last = node->head.all_key_count - 1;
thiskey = befs_bt_get_key(sb, node, last, &keylen);
eq = befs_compare_strings(thiskey, keylen, findkey, findkey_len);
if (eq < 0) {
befs_debug(sb, "<--- node can't contain %s", findkey);
return BEFS_BT_OVERFLOW;
}
valarray = befs_bt_valarray(node);
/* simple binary search */
first = 0;
mid = 0;
while (last >= first) {
mid = (last + first) / 2;
befs_debug(sb, "first: %d, last: %d, mid: %d", first, last,
mid);
thiskey = befs_bt_get_key(sb, node, mid, &keylen);
eq = befs_compare_strings(thiskey, keylen, findkey,
findkey_len);
if (eq == 0) {
befs_debug(sb, "<--- %s found %s at %d",
__func__, thiskey, mid);
*value = fs64_to_cpu(sb, valarray[mid]);
return BEFS_BT_MATCH;
}
if (eq > 0)
last = mid - 1;
else
first = mid + 1;
}
/* return an existing value so caller can arrive to a leaf node */
if (eq < 0)
*value = fs64_to_cpu(sb, valarray[mid + 1]);
else
*value = fs64_to_cpu(sb, valarray[mid]);
befs_error(sb, "<--- %s %s not found", __func__, findkey);
befs_debug(sb, "<--- %s ERROR", __func__);
return BEFS_BT_NOT_FOUND;
}
static int
befs_bt_read_node(struct super_block *sb, befs_data_stream * ds,
befs_btree_node * node, befs_off_t node_off)
{
uint off = 0;
befs_debug(sb, "---> befs_bt_read_node()");
if (node->bh)
brelse(node->bh);
node->bh = befs_read_datastream(sb, ds, node_off, &off);
if (!node->bh) {
befs_error(sb, "befs_bt_read_node() failed to read "
"node at %Lu", node_off);
befs_debug(sb, "<--- befs_bt_read_node() ERROR");
return BEFS_ERR;
}
node->od_node =
(befs_btree_nodehead *) ((void *) node->bh->b_data + off);
befs_dump_index_node(sb, node->od_node);
node->head.left = fs64_to_cpu(sb, node->od_node->left);
node->head.right = fs64_to_cpu(sb, node->od_node->right);
node->head.overflow = fs64_to_cpu(sb, node->od_node->overflow);
node->head.all_key_count =
fs16_to_cpu(sb, node->od_node->all_key_count);
node->head.all_key_length =
fs16_to_cpu(sb, node->od_node->all_key_length);
befs_debug(sb, "<--- befs_btree_read_node()");
return BEFS_OK;
}
/**
* load_befs_sb -- Read from disk and properly byteswap all the fields
* of the befs superblock
*
*
*
*
*/
int
befs_load_sb(struct super_block *sb, befs_super_block * disk_sb)
{
befs_sb_info *befs_sb = BEFS_SB(sb);
/* Check the byte order of the filesystem */
if (le32_to_cpu(disk_sb->fs_byte_order) == BEFS_BYTEORDER_NATIVE)
befs_sb->byte_order = BEFS_BYTESEX_LE;
else if (be32_to_cpu(disk_sb->fs_byte_order) == BEFS_BYTEORDER_NATIVE)
befs_sb->byte_order = BEFS_BYTESEX_BE;
befs_sb->magic1 = fs32_to_cpu(sb, disk_sb->magic1);
befs_sb->magic2 = fs32_to_cpu(sb, disk_sb->magic2);
befs_sb->magic3 = fs32_to_cpu(sb, disk_sb->magic3);
befs_sb->block_size = fs32_to_cpu(sb, disk_sb->block_size);
befs_sb->block_shift = fs32_to_cpu(sb, disk_sb->block_shift);
befs_sb->num_blocks = fs64_to_cpu(sb, disk_sb->num_blocks);
befs_sb->used_blocks = fs64_to_cpu(sb, disk_sb->used_blocks);
befs_sb->inode_size = fs32_to_cpu(sb, disk_sb->inode_size);
befs_sb->blocks_per_ag = fs32_to_cpu(sb, disk_sb->blocks_per_ag);
befs_sb->ag_shift = fs32_to_cpu(sb, disk_sb->ag_shift);
befs_sb->num_ags = fs32_to_cpu(sb, disk_sb->num_ags);
befs_sb->log_blocks = fsrun_to_cpu(sb, disk_sb->log_blocks);
befs_sb->log_start = fs64_to_cpu(sb, disk_sb->log_start);
befs_sb->log_end = fs64_to_cpu(sb, disk_sb->log_end);
befs_sb->root_dir = fsrun_to_cpu(sb, disk_sb->root_dir);
befs_sb->indices = fsrun_to_cpu(sb, disk_sb->indices);
befs_sb->nls = NULL;
return BEFS_OK;
}
/**
* befs_find_key - Search for a key within a node
* @sb: Filesystem superblock
* @node: Node to find the key within
* @key: Keystring to search for
* @value: If key is found, the value stored with the key is put here
*
* finds exact match if one exists, and returns BEFS_BT_MATCH
* If no exact match, finds first key in node that is greater
* (alphabetically) than the search key and returns BEFS_BT_PARMATCH
* (for partial match, I guess). Can you think of something better to
* call it?
*
* If no key was a match or greater than the search key, return
* BEFS_BT_NOT_FOUND.
*
* Use binary search instead of a linear.
*/
static int
befs_find_key(struct super_block *sb, befs_btree_node * node,
const char *findkey, befs_off_t * value)
{
int first, last, mid;
int eq;
u16 keylen;
int findkey_len;
char *thiskey;
fs64 *valarray;
befs_debug(sb, "---> befs_find_key() %s", findkey);
*value = 0;
findkey_len = strlen(findkey);
/* if node can not contain key, just skeep this node */
last = node->head.all_key_count - 1;
thiskey = befs_bt_get_key(sb, node, last, &keylen);
eq = befs_compare_strings(thiskey, keylen, findkey, findkey_len);
if (eq < 0) {
befs_debug(sb, "<--- befs_find_key() %s not found", findkey);
return BEFS_BT_NOT_FOUND;
}
valarray = befs_bt_valarray(node);
/* simple binary search */
first = 0;
mid = 0;
while (last >= first) {
mid = (last + first) / 2;
befs_debug(sb, "first: %d, last: %d, mid: %d", first, last,
mid);
thiskey = befs_bt_get_key(sb, node, mid, &keylen);
eq = befs_compare_strings(thiskey, keylen, findkey,
findkey_len);
if (eq == 0) {
befs_debug(sb, "<--- befs_find_key() found %s at %d",
thiskey, mid);
*value = fs64_to_cpu(sb, valarray[mid]);
return BEFS_BT_MATCH;
}
if (eq > 0)
last = mid - 1;
else
first = mid + 1;
}
if (eq < 0)
*value = fs64_to_cpu(sb, valarray[mid + 1]);
else
*value = fs64_to_cpu(sb, valarray[mid]);
befs_debug(sb, "<--- befs_find_key() found %s at %d", thiskey, mid);
return BEFS_BT_PARMATCH;
}
void
befs_dump_super_block(const struct super_block *sb, befs_super_block *sup)
{
#ifdef CONFIG_BEFS_DEBUG
befs_block_run tmp_run;
befs_debug(sb, "befs_super_block information");
befs_debug(sb, " name %s", sup->name);
befs_debug(sb, " magic1 %08x", fs32_to_cpu(sb, sup->magic1));
befs_debug(sb, " fs_byte_order %08x",
fs32_to_cpu(sb, sup->fs_byte_order));
befs_debug(sb, " block_size %u", fs32_to_cpu(sb, sup->block_size));
befs_debug(sb, " block_shift %u", fs32_to_cpu(sb, sup->block_shift));
befs_debug(sb, " num_blocks %llu", fs64_to_cpu(sb, sup->num_blocks));
befs_debug(sb, " used_blocks %llu", fs64_to_cpu(sb, sup->used_blocks));
befs_debug(sb, " inode_size %u", fs32_to_cpu(sb, sup->inode_size));
befs_debug(sb, " magic2 %08x", fs32_to_cpu(sb, sup->magic2));
befs_debug(sb, " blocks_per_ag %u",
fs32_to_cpu(sb, sup->blocks_per_ag));
befs_debug(sb, " ag_shift %u", fs32_to_cpu(sb, sup->ag_shift));
befs_debug(sb, " num_ags %u", fs32_to_cpu(sb, sup->num_ags));
befs_debug(sb, " flags %08x", fs32_to_cpu(sb, sup->flags));
tmp_run = fsrun_to_cpu(sb, sup->log_blocks);
befs_debug(sb, " log_blocks %u, %hu, %hu",
tmp_run.allocation_group, tmp_run.start, tmp_run.len);
befs_debug(sb, " log_start %lld", fs64_to_cpu(sb, sup->log_start));
befs_debug(sb, " log_end %lld", fs64_to_cpu(sb, sup->log_end));
befs_debug(sb, " magic3 %08x", fs32_to_cpu(sb, sup->magic3));
tmp_run = fsrun_to_cpu(sb, sup->root_dir);
befs_debug(sb, " root_dir %u, %hu, %hu",
tmp_run.allocation_group, tmp_run.start, tmp_run.len);
tmp_run = fsrun_to_cpu(sb, sup->indices);
befs_debug(sb, " indices %u, %hu, %hu",
tmp_run.allocation_group, tmp_run.start, tmp_run.len);
#endif //CONFIG_BEFS_DEBUG
}
void
befs_dump_index_node(const struct super_block *sb, befs_btree_nodehead * node)
{
#ifdef CONFIG_BEFS_DEBUG
befs_debug(sb, "Btree node structure");
befs_debug(sb, " left %016LX", fs64_to_cpu(sb, node->left));
befs_debug(sb, " right %016LX", fs64_to_cpu(sb, node->right));
befs_debug(sb, " overflow %016LX", fs64_to_cpu(sb, node->overflow));
befs_debug(sb, " all_key_count %hu",
fs16_to_cpu(sb, node->all_key_count));
befs_debug(sb, " all_key_length %hu",
fs16_to_cpu(sb, node->all_key_length));
#endif //CONFIG_BEFS_DEBUG
}
static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi;
unsigned flags = UFS_SB(sb)->s_flags;
struct ufs_super_block_third *usb3;
u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
mutex_lock(&UFS_SB(sb)->s_lock);
usb3 = ubh_get_usb_third(uspi);
if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
buf->f_type = UFS2_MAGIC;
buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
} else {
buf->f_type = UFS_MAGIC;
buf->f_blocks = uspi->s_dsize;
}
buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) +
uspi->cs_total.cs_nffree;
buf->f_ffree = uspi->cs_total.cs_nifree;
buf->f_bsize = sb->s_blocksize;
buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree))
? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0;
buf->f_files = uspi->s_ncg * uspi->s_ipg;
buf->f_namelen = UFS_MAXNAMLEN;
buf->f_fsid.val[0] = (u32)id;
buf->f_fsid.val[1] = (u32)(id >> 32);
mutex_unlock(&UFS_SB(sb)->s_lock);
return 0;
}
static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi;
unsigned flags = UFS_SB(sb)->s_flags;
struct ufs_super_block_first *usb1;
struct ufs_super_block_second *usb2;
struct ufs_super_block_third *usb3;
lock_kernel();
usb1 = ubh_get_usb_first(uspi);
usb2 = ubh_get_usb_second(uspi);
usb3 = ubh_get_usb_third(uspi);
if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
buf->f_type = UFS2_MAGIC;
buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
} else {
buf->f_type = UFS_MAGIC;
buf->f_blocks = uspi->s_dsize;
}
buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) +
uspi->cs_total.cs_nffree;
buf->f_ffree = uspi->cs_total.cs_nifree;
buf->f_bsize = sb->s_blocksize;
buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree))
? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0;
buf->f_files = uspi->s_ncg * uspi->s_ipg;
buf->f_namelen = UFS_MAXNAMLEN;
unlock_kernel();
return 0;
}
void
befs_dump_index_entry(const struct super_block *sb, befs_btree_super * super)
{
#ifdef CONFIG_BEFS_DEBUG
befs_debug(sb, "Btree super structure");
befs_debug(sb, " magic %08x", fs32_to_cpu(sb, super->magic));
befs_debug(sb, " node_size %u", fs32_to_cpu(sb, super->node_size));
befs_debug(sb, " max_depth %08x", fs32_to_cpu(sb, super->max_depth));
befs_debug(sb, " data_type %08x", fs32_to_cpu(sb, super->data_type));
befs_debug(sb, " root_node_pointer %016LX",
fs64_to_cpu(sb, super->root_node_ptr));
befs_debug(sb, " free_node_pointer %016LX",
fs64_to_cpu(sb, super->free_node_ptr));
befs_debug(sb, " maximum size %016LX",
fs64_to_cpu(sb, super->max_size));
#endif //CONFIG_BEFS_DEBUG
}
/*
* Print contents of ufs2 ufs_super_block, useful for debugging
*/
void ufs2_print_super_stuff(
struct super_block *sb,
struct ufs_super_block *usb)
{
printk("ufs_print_super_stuff\n");
printk("size of usb: %u\n", sizeof(struct ufs_super_block));
printk(" magic: 0x%x\n", fs32_to_cpu(sb, usb->fs_magic));
printk(" fs_size: %u\n",fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_size));
printk(" fs_dsize: %u\n",fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_dsize));
printk(" bsize: %u\n", fs32_to_cpu(usb, usb->fs_bsize));
printk(" fsize: %u\n", fs32_to_cpu(usb, usb->fs_fsize));
printk(" fs_volname: %s\n", usb->fs_u11.fs_u2.fs_volname);
printk(" fs_fsmnt: %s\n", usb->fs_u11.fs_u2.fs_fsmnt);
printk(" fs_sblockloc: %u\n",fs64_to_cpu(sb,
usb->fs_u11.fs_u2.fs_sblockloc));
printk(" cs_ndir(No of dirs): %u\n",fs64_to_cpu(sb,
usb->fs_u11.fs_u2.fs_cstotal.cs_ndir));
printk(" cs_nbfree(No of free blocks): %u\n",fs64_to_cpu(sb,
usb->fs_u11.fs_u2.fs_cstotal.cs_nbfree));
printk("\n");
}
/**
* befs_bt_read_super - read in btree superblock convert to cpu byteorder
* @sb: Filesystem superblock
* @ds: Datastream to read from
* @sup: Buffer in which to place the btree superblock
*
* Calls befs_read_datastream to read in the btree superblock and
* makes sure it is in cpu byteorder, byteswapping if necessary.
*
* On success, returns BEFS_OK and *@sup contains the btree superblock,
* in cpu byte order.
*
* On failure, BEFS_ERR is returned.
*/
static int
befs_bt_read_super(struct super_block *sb, befs_data_stream * ds,
befs_btree_super * sup)
{
struct buffer_head *bh = NULL;
befs_disk_btree_super *od_sup = NULL;
befs_debug(sb, "---> befs_btree_read_super()");
bh = befs_read_datastream(sb, ds, 0, NULL);
if (!bh) {
befs_error(sb, "Couldn't read index header.");
goto error;
}
od_sup = (befs_disk_btree_super *) bh->b_data;
befs_dump_index_entry(sb, od_sup);
sup->magic = fs32_to_cpu(sb, od_sup->magic);
sup->node_size = fs32_to_cpu(sb, od_sup->node_size);
sup->max_depth = fs32_to_cpu(sb, od_sup->max_depth);
sup->data_type = fs32_to_cpu(sb, od_sup->data_type);
sup->root_node_ptr = fs64_to_cpu(sb, od_sup->root_node_ptr);
sup->free_node_ptr = fs64_to_cpu(sb, od_sup->free_node_ptr);
sup->max_size = fs64_to_cpu(sb, od_sup->max_size);
brelse(bh);
if (sup->magic != BEFS_BTREE_MAGIC) {
befs_error(sb, "Index header has bad magic.");
goto error;
}
befs_debug(sb, "<--- befs_btree_read_super()");
return BEFS_OK;
error:
befs_debug(sb, "<--- befs_btree_read_super() ERROR");
return BEFS_ERR;
}
/**
* befs_btree_seekleaf - Find the first leafnode in the btree
* @sb: Filesystem superblock
* @ds: Datastream containing btree
* @bt_super: Pointer to the superblock of the btree
* @this_node: Buffer to return the leafnode in
* @node_off: Pointer to offset of current node within datastream. Modified
* by the function.
*
*
* Helper function for btree traverse. Moves the current position to the
* start of the first leaf node.
*
* Also checks for an empty tree. If there are no keys, returns BEFS_BT_EMPTY.
*/
static int
befs_btree_seekleaf(struct super_block *sb, const befs_data_stream *ds,
befs_btree_super *bt_super,
struct befs_btree_node *this_node,
befs_off_t * node_off)
{
befs_debug(sb, "---> %s", __func__);
if (befs_bt_read_node(sb, ds, this_node, *node_off) != BEFS_OK) {
befs_error(sb, "%s failed to read "
"node at %llu", __func__, *node_off);
goto error;
}
befs_debug(sb, "Seekleaf to root node %llu", *node_off);
if (this_node->head.all_key_count == 0 && befs_leafnode(this_node)) {
befs_debug(sb, "<--- %s Tree is EMPTY", __func__);
return BEFS_BT_EMPTY;
}
while (!befs_leafnode(this_node)) {
if (this_node->head.all_key_count == 0) {
befs_debug(sb, "%s encountered "
"an empty interior node: %llu. Using Overflow "
"node: %llu", __func__, *node_off,
this_node->head.overflow);
*node_off = this_node->head.overflow;
} else {
fs64 *valarray = befs_bt_valarray(this_node);
*node_off = fs64_to_cpu(sb, valarray[0]);
}
if (befs_bt_read_node(sb, ds, this_node, *node_off) != BEFS_OK) {
befs_error(sb, "%s failed to read "
"node at %llu", __func__, *node_off);
goto error;
}
befs_debug(sb, "Seekleaf to child node %llu", *node_off);
}
befs_debug(sb, "Node %llu is a leaf node", *node_off);
return BEFS_OK;
error:
befs_debug(sb, "<--- %s ERROR", __func__);
return BEFS_ERR;
}
/*
* Print contents of ufs_super_block, useful for debugging
*/
static void ufs_print_super_stuff(struct super_block *sb,
struct ufs_super_block_first *usb1,
struct ufs_super_block_second *usb2,
struct ufs_super_block_third *usb3)
{
u32 magic = fs32_to_cpu(sb, usb3->fs_magic);
pr_debug("ufs_print_super_stuff\n");
pr_debug(" magic: 0x%x\n", magic);
if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) {
pr_debug(" fs_size: %llu\n", (unsigned long long)
fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size));
pr_debug(" fs_dsize: %llu\n", (unsigned long long)
fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize));
pr_debug(" bsize: %u\n",
fs32_to_cpu(sb, usb1->fs_bsize));
pr_debug(" fsize: %u\n",
fs32_to_cpu(sb, usb1->fs_fsize));
pr_debug(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname);
pr_debug(" fs_sblockloc: %llu\n", (unsigned long long)
fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc));
pr_debug(" cs_ndir(No of dirs): %llu\n", (unsigned long long)
fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir));
pr_debug(" cs_nbfree(No of free blocks): %llu\n",
(unsigned long long)
fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree));
pr_info(" cs_nifree(Num of free inodes): %llu\n",
(unsigned long long)
fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree));
pr_info(" cs_nffree(Num of free frags): %llu\n",
(unsigned long long)
fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree));
pr_info(" fs_maxsymlinklen: %u\n",
fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen));
} else {
pr_debug(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno));
pr_debug(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno));
pr_debug(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno));
pr_debug(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno));
pr_debug(" cgoffset: %u\n",
fs32_to_cpu(sb, usb1->fs_cgoffset));
pr_debug(" ~cgmask: 0x%x\n",
~fs32_to_cpu(sb, usb1->fs_cgmask));
pr_debug(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size));
pr_debug(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize));
pr_debug(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg));
pr_debug(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize));
pr_debug(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize));
pr_debug(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag));
pr_debug(" fragshift: %u\n",
fs32_to_cpu(sb, usb1->fs_fragshift));
pr_debug(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask));
pr_debug(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift));
pr_debug(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize));
pr_debug(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc));
pr_debug(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg));
pr_debug(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg));
pr_debug(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg));
pr_debug(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr));
pr_debug(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize));
pr_debug(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize));
pr_debug(" fstodb: %u\n",
fs32_to_cpu(sb, usb1->fs_fsbtodb));
pr_debug(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos));
pr_debug(" ndir %u\n",
fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir));
pr_debug(" nifree %u\n",
fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree));
pr_debug(" nbfree %u\n",
fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree));
pr_debug(" nffree %u\n",
fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree));
}
pr_debug("\n");
}
struct qnx6_super_block *qnx6_mmi_fill_super(struct super_block *s, int silent)
{
struct buffer_head *bh1, *bh2 = NULL;
struct qnx6_mmi_super_block *sb1, *sb2;
struct qnx6_super_block *qsb = NULL;
struct qnx6_sb_info *sbi;
__u64 offset;
bh1 = sb_bread(s, 0);
if (!bh1) {
printk(KERN_ERR "qnx6: Unable to read first mmi superblock\n");
return NULL;
}
sb1 = (struct qnx6_mmi_super_block *)bh1->b_data;
sbi = QNX6_SB(s);
if (fs32_to_cpu(sbi, sb1->sb_magic) != QNX6_SUPER_MAGIC) {
if (!silent) {
printk(KERN_ERR "qnx6: wrong signature (magic) in"
" superblock #1.\n");
goto out;
}
}
if (fs32_to_cpu(sbi, sb1->sb_checksum) !=
crc32_be(0, (char *)(bh1->b_data + 8), 504)) {
printk(KERN_ERR "qnx6: superblock #1 checksum error\n");
goto out;
}
offset = fs32_to_cpu(sbi, sb1->sb_num_blocks) + QNX6_SUPERBLOCK_AREA /
fs32_to_cpu(sbi, sb1->sb_blocksize);
if (!sb_set_blocksize(s, fs32_to_cpu(sbi, sb1->sb_blocksize))) {
printk(KERN_ERR "qnx6: unable to set blocksize\n");
goto out;
}
brelse(bh1);
bh1 = sb_bread(s, 0);
if (!bh1)
goto out;
sb1 = (struct qnx6_mmi_super_block *)bh1->b_data;
bh2 = sb_bread(s, offset);
if (!bh2) {
printk(KERN_ERR "qnx6: unable to read the second superblock\n");
goto out;
}
sb2 = (struct qnx6_mmi_super_block *)bh2->b_data;
if (fs32_to_cpu(sbi, sb2->sb_magic) != QNX6_SUPER_MAGIC) {
if (!silent)
printk(KERN_ERR "qnx6: wrong signature (magic) in"
" superblock #2.\n");
goto out;
}
if (fs32_to_cpu(sbi, sb2->sb_checksum)
!= crc32_be(0, (char *)(bh2->b_data + 8), 504)) {
printk(KERN_ERR "qnx6: superblock #1 checksum error\n");
goto out;
}
qsb = kmalloc(sizeof(*qsb), GFP_KERNEL);
if (!qsb) {
printk(KERN_ERR "qnx6: unable to allocate memory.\n");
goto out;
}
if (fs64_to_cpu(sbi, sb1->sb_serial) >
fs64_to_cpu(sbi, sb2->sb_serial)) {
qnx6_mmi_copy_sb(qsb, sb1);
#ifdef CONFIG_QNX6FS_DEBUG
qnx6_superblock_debug(qsb, s);
#endif
memcpy(bh1->b_data, qsb, sizeof(struct qnx6_super_block));
sbi->sb_buf = bh1;
sbi->sb = (struct qnx6_super_block *)bh1->b_data;
brelse(bh2);
printk(KERN_INFO "qnx6: superblock #1 active\n");
} else {
qnx6_mmi_copy_sb(qsb, sb2);
#ifdef CONFIG_QNX6FS_DEBUG
qnx6_superblock_debug(qsb, s);
#endif
memcpy(bh2->b_data, qsb, sizeof(struct qnx6_super_block));
sbi->sb_buf = bh2;
sbi->sb = (struct qnx6_super_block *)bh2->b_data;
brelse(bh1);
printk(KERN_INFO "qnx6: superblock #2 active\n");
}
kfree(qsb);
sbi->s_blks_off = QNX6_SUPERBLOCK_AREA / s->s_blocksize;
return sbi->sb;
out:
if (bh1 != NULL)
brelse(bh1);
if (bh2 != NULL)
brelse(bh2);
return NULL;
}
/**
* befs_btree_read - Traverse leafnodes of a btree
* @sb: Filesystem superblock
* @ds: Datastream containing btree
* @key_no: Key number (alphabetical order) of key to read
* @bufsize: Size of the buffer to return key in
* @keybuf: Pointer to a buffer to put the key in
* @keysize: Length of the returned key
* @value: Value stored with the returned key
*
* Heres how it works: Key_no is the index of the key/value pair to
* return in keybuf/value.
* Bufsize is the size of keybuf (BEFS_NAME_LEN+1 is a good size). Keysize is
* the number of charecters in the key (just a convenience).
*
* Algorithm:
* Get the first leafnode of the tree. See if the requested key is in that
* node. If not, follow the node->right link to the next leafnode. Repeat
* until the (key_no)th key is found or the tree is out of keys.
*/
int
befs_btree_read(struct super_block *sb, befs_data_stream * ds,
loff_t key_no, size_t bufsize, char *keybuf, size_t * keysize,
befs_off_t * value)
{
befs_btree_node *this_node;
befs_btree_super bt_super;
befs_off_t node_off = 0;
int cur_key;
fs64 *valarray;
char *keystart;
u16 keylen;
int res;
uint key_sum = 0;
befs_debug(sb, "---> befs_btree_read()");
if (befs_bt_read_super(sb, ds, &bt_super) != BEFS_OK) {
befs_error(sb,
"befs_btree_read() failed to read index superblock");
goto error;
}
if ((this_node = kmalloc(sizeof (befs_btree_node), GFP_NOFS)) == NULL) {
befs_error(sb, "befs_btree_read() failed to allocate %u "
"bytes of memory", sizeof (befs_btree_node));
goto error;
}
node_off = bt_super.root_node_ptr;
this_node->bh = NULL;
/* seeks down to first leafnode, reads it into this_node */
res = befs_btree_seekleaf(sb, ds, &bt_super, this_node, &node_off);
if (res == BEFS_BT_EMPTY) {
brelse(this_node->bh);
kfree(this_node);
*value = 0;
*keysize = 0;
befs_debug(sb, "<--- befs_btree_read() Tree is EMPTY");
return BEFS_BT_EMPTY;
} else if (res == BEFS_ERR) {
goto error_alloc;
}
/* find the leaf node containing the key_no key */
while (key_sum + this_node->head.all_key_count <= key_no) {
/* no more nodes to look in: key_no is too large */
if (this_node->head.right == befs_bt_inval) {
*keysize = 0;
*value = 0;
befs_debug(sb,
"<--- befs_btree_read() END of keys at %Lu",
key_sum + this_node->head.all_key_count);
brelse(this_node->bh);
kfree(this_node);
return BEFS_BT_END;
}
key_sum += this_node->head.all_key_count;
node_off = this_node->head.right;
if (befs_bt_read_node(sb, ds, this_node, node_off) != BEFS_OK) {
befs_error(sb, "befs_btree_read() failed to read "
"node at %Lu", node_off);
goto error_alloc;
}
}
/* how many keys into this_node is key_no */
cur_key = key_no - key_sum;
/* get pointers to datastructures within the node body */
valarray = befs_bt_valarray(this_node);
keystart = befs_bt_get_key(sb, this_node, cur_key, &keylen);
befs_debug(sb, "Read [%Lu,%d]: keysize %d", node_off, cur_key, keylen);
if (bufsize < keylen + 1) {
befs_error(sb, "befs_btree_read() keybuf too small (%u) "
"for key of size %d", bufsize, keylen);
brelse(this_node->bh);
goto error_alloc;
};
strncpy(keybuf, keystart, keylen);
*value = fs64_to_cpu(sb, valarray[cur_key]);
*keysize = keylen;
keybuf[keylen] = '\0';
befs_debug(sb, "Read [%Lu,%d]: Key \"%.*s\", Value %Lu", node_off,
cur_key, keylen, keybuf, *value);
brelse(this_node->bh);
kfree(this_node);
befs_debug(sb, "<--- befs_btree_read()");
return BEFS_OK;
error_alloc:
kfree(this_node);
error:
*keysize = 0;
*value = 0;
befs_debug(sb, "<--- befs_btree_read() ERROR");
return BEFS_ERR;
}
void
befs_dump_inode(const struct super_block *sb, befs_inode * inode)
{
#ifdef CONFIG_BEFS_DEBUG
befs_block_run tmp_run;
befs_debug(sb, "befs_inode information");
befs_debug(sb, " magic1 %08x", fs32_to_cpu(sb, inode->magic1));
tmp_run = fsrun_to_cpu(sb, inode->inode_num);
befs_debug(sb, " inode_num %u, %hu, %hu",
tmp_run.allocation_group, tmp_run.start, tmp_run.len);
befs_debug(sb, " uid %u", fs32_to_cpu(sb, inode->uid));
befs_debug(sb, " gid %u", fs32_to_cpu(sb, inode->gid));
befs_debug(sb, " mode %08x", fs32_to_cpu(sb, inode->mode));
befs_debug(sb, " flags %08x", fs32_to_cpu(sb, inode->flags));
befs_debug(sb, " create_time %Lu",
fs64_to_cpu(sb, inode->create_time));
befs_debug(sb, " last_modified_time %Lu",
fs64_to_cpu(sb, inode->last_modified_time));
tmp_run = fsrun_to_cpu(sb, inode->parent);
befs_debug(sb, " parent [%u, %hu, %hu]",
tmp_run.allocation_group, tmp_run.start, tmp_run.len);
tmp_run = fsrun_to_cpu(sb, inode->attributes);
befs_debug(sb, " attributes [%u, %hu, %hu]",
tmp_run.allocation_group, tmp_run.start, tmp_run.len);
befs_debug(sb, " type %08x", fs32_to_cpu(sb, inode->type));
befs_debug(sb, " inode_size %u", fs32_to_cpu(sb, inode->inode_size));
if (S_ISLNK(inode->mode)) {
befs_debug(sb, " Symbolic link [%s]", inode->data.symlink);
} else {
int i;
for (i = 0; i < BEFS_NUM_DIRECT_BLOCKS; i++) {
tmp_run =
fsrun_to_cpu(sb, inode->data.datastream.direct[i]);
befs_debug(sb, " direct %d [%u, %hu, %hu]", i,
tmp_run.allocation_group, tmp_run.start,
tmp_run.len);
}
befs_debug(sb, " max_direct_range %Lu",
fs64_to_cpu(sb,
inode->data.datastream.
max_direct_range));
tmp_run = fsrun_to_cpu(sb, inode->data.datastream.indirect);
befs_debug(sb, " indirect [%u, %hu, %hu]",
tmp_run.allocation_group,
tmp_run.start, tmp_run.len);
befs_debug(sb, " max_indirect_range %Lu",
fs64_to_cpu(sb,
inode->data.datastream.
max_indirect_range));
tmp_run =
fsrun_to_cpu(sb, inode->data.datastream.double_indirect);
befs_debug(sb, " double indirect [%u, %hu, %hu]",
tmp_run.allocation_group, tmp_run.start,
tmp_run.len);
befs_debug(sb, " max_double_indirect_range %Lu",
fs64_to_cpu(sb,
inode->data.datastream.
max_double_indirect_range));
befs_debug(sb, " size %Lu",
fs64_to_cpu(sb, inode->data.datastream.size));
}
#endif //CONFIG_BEFS_DEBUG
}
/*
* Read on-disk structures associated with cylinder groups
*/
static int ufs_read_cylinder_structures(struct super_block *sb)
{
struct ufs_sb_info *sbi = UFS_SB(sb);
struct ufs_sb_private_info *uspi = sbi->s_uspi;
unsigned flags = sbi->s_flags;
struct ufs_buffer_head * ubh;
unsigned char * base, * space;
unsigned size, blks, i;
struct ufs_super_block_third *usb3;
UFSD("ENTER\n");
usb3 = ubh_get_usb_third(uspi);
/*
* Read cs structures from (usually) first data block
* on the device.
*/
size = uspi->s_cssize;
blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
base = space = kmalloc(size, GFP_KERNEL);
if (!base)
goto failed;
sbi->s_csp = (struct ufs_csum *)space;
for (i = 0; i < blks; i += uspi->s_fpb) {
size = uspi->s_bsize;
if (i + uspi->s_fpb > blks)
size = (blks - i) * uspi->s_fsize;
if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
ubh = ubh_bread(sb,
fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr) + i, size);
else
ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
if (!ubh)
goto failed;
ubh_ubhcpymem (space, ubh, size);
space += size;
ubh_brelse (ubh);
ubh = NULL;
}
/*
* Read cylinder group (we read only first fragment from block
* at this time) and prepare internal data structures for cg caching.
*/
if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_KERNEL)))
goto failed;
for (i = 0; i < uspi->s_ncg; i++)
sbi->s_ucg[i] = NULL;
for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
sbi->s_ucpi[i] = NULL;
sbi->s_cgno[i] = UFS_CGNO_EMPTY;
}
for (i = 0; i < uspi->s_ncg; i++) {
UFSD("read cg %u\n", i);
if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i))))
goto failed;
if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data))
goto failed;
ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data);
}
for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_KERNEL)))
goto failed;
sbi->s_cgno[i] = UFS_CGNO_EMPTY;
}
sbi->s_cg_loaded = 0;
UFSD("EXIT\n");
return 1;
failed:
kfree (base);
if (sbi->s_ucg) {
for (i = 0; i < uspi->s_ncg; i++)
if (sbi->s_ucg[i])
brelse (sbi->s_ucg[i]);
kfree (sbi->s_ucg);
for (i = 0; i < UFS_MAX_GROUP_LOADED; i++)
kfree (sbi->s_ucpi[i]);
}
UFSD("EXIT (FAILED)\n");
return 0;
}
static int ufs_fill_super(struct super_block *sb, void *data, int silent)
{
struct ufs_sb_info * sbi;
struct ufs_sb_private_info * uspi;
struct ufs_super_block_first * usb1;
struct ufs_super_block_second * usb2;
struct ufs_super_block_third * usb3;
struct ufs_buffer_head * ubh;
struct inode *inode;
unsigned block_size, super_block_size;
unsigned flags;
unsigned super_block_offset;
unsigned maxsymlen;
int ret = -EINVAL;
uspi = NULL;
ubh = NULL;
flags = 0;
UFSD("ENTER\n");
#ifndef CONFIG_UFS_FS_WRITE
if (!(sb->s_flags & MS_RDONLY)) {
pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
return -EROFS;
}
#endif
sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL);
if (!sbi)
goto failed_nomem;
sb->s_fs_info = sbi;
sbi->sb = sb;
UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY));
mutex_init(&sbi->s_lock);
spin_lock_init(&sbi->work_lock);
INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
/*
* Set default mount options
* Parse mount options
*/
sbi->s_mount_opt = 0;
ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK);
if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) {
pr_err("wrong mount options\n");
goto failed;
}
if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) {
if (!silent)
pr_err("You didn't specify the type of your ufs filesystem\n\n"
"mount -t ufs -o ufstype="
"sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n"
">>>WARNING<<< Wrong ufstype may corrupt your filesystem, "
"default is ufstype=old\n");
ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD);
}
uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL);
sbi->s_uspi = uspi;
if (!uspi)
goto failed;
uspi->s_dirblksize = UFS_SECTOR_SIZE;
super_block_offset=UFS_SBLOCK;
/* Keep 2Gig file limit. Some UFS variants need to override
this but as I don't know which I'll let those in the know loosen
the rules */
switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) {
case UFS_MOUNT_UFSTYPE_44BSD:
UFSD("ufstype=44bsd\n");
uspi->s_fsize = block_size = 512;
uspi->s_fmask = ~(512 - 1);
uspi->s_fshift = 9;
uspi->s_sbsize = super_block_size = 1536;
uspi->s_sbbase = 0;
flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
break;
case UFS_MOUNT_UFSTYPE_UFS2:
UFSD("ufstype=ufs2\n");
super_block_offset=SBLOCK_UFS2;
uspi->s_fsize = block_size = 512;
uspi->s_fmask = ~(512 - 1);
uspi->s_fshift = 9;
uspi->s_sbsize = super_block_size = 1536;
uspi->s_sbbase = 0;
flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
break;
case UFS_MOUNT_UFSTYPE_SUN:
UFSD("ufstype=sun\n");
uspi->s_fsize = block_size = 1024;
uspi->s_fmask = ~(1024 - 1);
uspi->s_fshift = 10;
uspi->s_sbsize = super_block_size = 2048;
uspi->s_sbbase = 0;
uspi->s_maxsymlinklen = 0; /* Not supported on disk */
flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN;
break;
case UFS_MOUNT_UFSTYPE_SUNOS:
UFSD("ufstype=sunos\n");
uspi->s_fsize = block_size = 1024;
uspi->s_fmask = ~(1024 - 1);
uspi->s_fshift = 10;
uspi->s_sbsize = 2048;
super_block_size = 2048;
uspi->s_sbbase = 0;
uspi->s_maxsymlinklen = 0; /* Not supported on disk */
flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN;
break;
case UFS_MOUNT_UFSTYPE_SUNx86:
UFSD("ufstype=sunx86\n");
uspi->s_fsize = block_size = 1024;
uspi->s_fmask = ~(1024 - 1);
uspi->s_fshift = 10;
uspi->s_sbsize = super_block_size = 2048;
uspi->s_sbbase = 0;
uspi->s_maxsymlinklen = 0; /* Not supported on disk */
flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN;
break;
case UFS_MOUNT_UFSTYPE_OLD:
UFSD("ufstype=old\n");
uspi->s_fsize = block_size = 1024;
uspi->s_fmask = ~(1024 - 1);
uspi->s_fshift = 10;
uspi->s_sbsize = super_block_size = 2048;
uspi->s_sbbase = 0;
flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
if (!(sb->s_flags & MS_RDONLY)) {
if (!silent)
pr_info("ufstype=old is supported read-only\n");
sb->s_flags |= MS_RDONLY;
}
break;
case UFS_MOUNT_UFSTYPE_NEXTSTEP:
UFSD("ufstype=nextstep\n");
uspi->s_fsize = block_size = 1024;
uspi->s_fmask = ~(1024 - 1);
uspi->s_fshift = 10;
uspi->s_sbsize = super_block_size = 2048;
uspi->s_sbbase = 0;
uspi->s_dirblksize = 1024;
flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
if (!(sb->s_flags & MS_RDONLY)) {
if (!silent)
pr_info("ufstype=nextstep is supported read-only\n");
sb->s_flags |= MS_RDONLY;
}
break;
case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD:
UFSD("ufstype=nextstep-cd\n");
uspi->s_fsize = block_size = 2048;
uspi->s_fmask = ~(2048 - 1);
uspi->s_fshift = 11;
uspi->s_sbsize = super_block_size = 2048;
uspi->s_sbbase = 0;
uspi->s_dirblksize = 1024;
flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
if (!(sb->s_flags & MS_RDONLY)) {
if (!silent)
pr_info("ufstype=nextstep-cd is supported read-only\n");
sb->s_flags |= MS_RDONLY;
}
break;
case UFS_MOUNT_UFSTYPE_OPENSTEP:
UFSD("ufstype=openstep\n");
uspi->s_fsize = block_size = 1024;
uspi->s_fmask = ~(1024 - 1);
uspi->s_fshift = 10;
uspi->s_sbsize = super_block_size = 2048;
uspi->s_sbbase = 0;
uspi->s_dirblksize = 1024;
flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
if (!(sb->s_flags & MS_RDONLY)) {
if (!silent)
pr_info("ufstype=openstep is supported read-only\n");
sb->s_flags |= MS_RDONLY;
}
break;
case UFS_MOUNT_UFSTYPE_HP:
UFSD("ufstype=hp\n");
uspi->s_fsize = block_size = 1024;
uspi->s_fmask = ~(1024 - 1);
uspi->s_fshift = 10;
uspi->s_sbsize = super_block_size = 2048;
uspi->s_sbbase = 0;
flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
if (!(sb->s_flags & MS_RDONLY)) {
if (!silent)
pr_info("ufstype=hp is supported read-only\n");
sb->s_flags |= MS_RDONLY;
}
break;
default:
if (!silent)
pr_err("unknown ufstype\n");
goto failed;
}
again:
if (!sb_set_blocksize(sb, block_size)) {
pr_err("failed to set blocksize\n");
goto failed;
}
/*
* read ufs super block from device
*/
ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size);
if (!ubh)
goto failed;
usb1 = ubh_get_usb_first(uspi);
usb2 = ubh_get_usb_second(uspi);
usb3 = ubh_get_usb_third(uspi);
/* Sort out mod used on SunOS 4.1.3 for fs_state */
uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat);
if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) &&
(uspi->s_postblformat != UFS_42POSTBLFMT)) {
flags &= ~UFS_ST_MASK;
flags |= UFS_ST_SUN;
}
/*
* Check ufs magic number
*/
sbi->s_bytesex = BYTESEX_LE;
switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
case UFS_MAGIC:
case UFS_MAGIC_BW:
case UFS2_MAGIC:
case UFS_MAGIC_LFN:
case UFS_MAGIC_FEA:
case UFS_MAGIC_4GB:
goto magic_found;
}
sbi->s_bytesex = BYTESEX_BE;
switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
case UFS_MAGIC:
case UFS_MAGIC_BW:
case UFS2_MAGIC:
case UFS_MAGIC_LFN:
case UFS_MAGIC_FEA:
case UFS_MAGIC_4GB:
goto magic_found;
}
if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP)
|| ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD)
|| ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP))
&& uspi->s_sbbase < 256) {
ubh_brelse_uspi(uspi);
ubh = NULL;
uspi->s_sbbase += 8;
goto again;
}
if (!silent)
pr_err("%s(): bad magic number\n", __func__);
goto failed;
magic_found:
/*
* Check block and fragment sizes
*/
uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize);
uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize);
uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize);
uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
if (!is_power_of_2(uspi->s_fsize)) {
pr_err("%s(): fragment size %u is not a power of 2\n",
__func__, uspi->s_fsize);
goto failed;
}
if (uspi->s_fsize < 512) {
pr_err("%s(): fragment size %u is too small\n",
__func__, uspi->s_fsize);
goto failed;
}
if (uspi->s_fsize > 4096) {
pr_err("%s(): fragment size %u is too large\n",
__func__, uspi->s_fsize);
goto failed;
}
if (!is_power_of_2(uspi->s_bsize)) {
pr_err("%s(): block size %u is not a power of 2\n",
__func__, uspi->s_bsize);
goto failed;
}
if (uspi->s_bsize < 4096) {
pr_err("%s(): block size %u is too small\n",
__func__, uspi->s_bsize);
goto failed;
}
if (uspi->s_bsize / uspi->s_fsize > 8) {
pr_err("%s(): too many fragments per block (%u)\n",
__func__, uspi->s_bsize / uspi->s_fsize);
goto failed;
}
if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) {
ubh_brelse_uspi(uspi);
ubh = NULL;
block_size = uspi->s_fsize;
super_block_size = uspi->s_sbsize;
UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size);
goto again;
}
sbi->s_flags = flags;/*after that line some functions use s_flags*/
ufs_print_super_stuff(sb, usb1, usb2, usb3);
/*
* Check, if file system was correctly unmounted.
* If not, make it read only.
*/
if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) ||
((flags & UFS_ST_MASK) == UFS_ST_OLD) ||
(((flags & UFS_ST_MASK) == UFS_ST_SUN ||
(flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
(flags & UFS_ST_MASK) == UFS_ST_SUNx86) &&
(ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) {
switch(usb1->fs_clean) {
case UFS_FSCLEAN:
UFSD("fs is clean\n");
break;
case UFS_FSSTABLE:
UFSD("fs is stable\n");
break;
case UFS_FSLOG:
UFSD("fs is logging fs\n");
break;
case UFS_FSOSF1:
UFSD("fs is DEC OSF/1\n");
break;
case UFS_FSACTIVE:
pr_err("%s(): fs is active\n", __func__);
sb->s_flags |= MS_RDONLY;
break;
case UFS_FSBAD:
pr_err("%s(): fs is bad\n", __func__);
sb->s_flags |= MS_RDONLY;
break;
default:
pr_err("%s(): can't grok fs_clean 0x%x\n",
__func__, usb1->fs_clean);
sb->s_flags |= MS_RDONLY;
break;
}
} else {
pr_err("%s(): fs needs fsck\n", __func__);
sb->s_flags |= MS_RDONLY;
}
/*
* Read ufs_super_block into internal data structures
*/
sb->s_op = &ufs_super_ops;
sb->s_export_op = &ufs_export_ops;
sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic);
uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno);
uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno);
uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno);
uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno);
uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset);
uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask);
if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
uspi->s_u2_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size);
uspi->s_u2_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
} else {
uspi->s_size = fs32_to_cpu(sb, usb1->fs_size);
uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize);
}
uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg);
/* s_bsize already set */
/* s_fsize already set */
uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag);
uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree);
uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask);
uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift);
uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift,
uspi->s_fshift);
uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift);
uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb);
/* s_sbsize already set */
uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask);
uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift);
uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir);
uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb);
uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf);
uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3);
uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave);
uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew);
if (uspi->fs_magic == UFS2_MAGIC)
uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr);
else
uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr);
uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize);
uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize);
uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak);
uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect);
uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc);
uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg);
uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg);
uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc);
uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize);
uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3);
uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3);
uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos);
uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff);
uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff);
/*
* Compute another frequently used values
*/
uspi->s_fpbmask = uspi->s_fpb - 1;
if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
uspi->s_apbshift = uspi->s_bshift - 3;
else
uspi->s_apbshift = uspi->s_bshift - 2;
uspi->s_2apbshift = uspi->s_apbshift * 2;
uspi->s_3apbshift = uspi->s_apbshift * 3;
uspi->s_apb = 1 << uspi->s_apbshift;
uspi->s_2apb = 1 << uspi->s_2apbshift;
uspi->s_3apb = 1 << uspi->s_3apbshift;
uspi->s_apbmask = uspi->s_apb - 1;
uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS;
uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift;
uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift;
uspi->s_bpf = uspi->s_fsize << 3;
uspi->s_bpfshift = uspi->s_fshift + 3;
uspi->s_bpfmask = uspi->s_bpf - 1;
if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD ||
(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2)
uspi->s_maxsymlinklen =
fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen);
if (uspi->fs_magic == UFS2_MAGIC)
maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR);
else
maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR);
if (uspi->s_maxsymlinklen > maxsymlen) {
ufs_warning(sb, __func__, "ufs_read_super: excessive maximum "
"fast symlink size (%u)\n", uspi->s_maxsymlinklen);
uspi->s_maxsymlinklen = maxsymlen;
}
sb->s_max_links = UFS_LINK_MAX;
inode = ufs_iget(sb, UFS_ROOTINO);
if (IS_ERR(inode)) {
ret = PTR_ERR(inode);
goto failed;
}
sb->s_root = d_make_root(inode);
if (!sb->s_root) {
ret = -ENOMEM;
goto failed;
}
ufs_setup_cstotal(sb);
/*
* Read cylinder group structures
*/
if (!(sb->s_flags & MS_RDONLY))
if (!ufs_read_cylinder_structures(sb))
goto failed;
UFSD("EXIT\n");
return 0;
failed:
if (ubh)
ubh_brelse_uspi (uspi);
kfree (uspi);
kfree(sbi);
sb->s_fs_info = NULL;
UFSD("EXIT (FAILED)\n");
return ret;
failed_nomem:
UFSD("EXIT (NOMEM)\n");
return -ENOMEM;
}
static struct dentry *ufs_get_parent(struct dentry *child)
{
struct qstr dot_dot = {
.name = "..",
.len = 2,
};
ino_t ino;
ino = ufs_inode_by_name(child->d_inode, &dot_dot);
if (!ino)
return ERR_PTR(-ENOENT);
return d_obtain_alias(ufs_iget(child->d_inode->i_sb, ino));
}
static const struct export_operations ufs_export_ops = {
.fh_to_dentry = ufs_fh_to_dentry,
.fh_to_parent = ufs_fh_to_parent,
.get_parent = ufs_get_parent,
};
#ifdef CONFIG_UFS_DEBUG
static void ufs_print_super_stuff(struct super_block *sb,
struct ufs_super_block_first *usb1,
struct ufs_super_block_second *usb2,
struct ufs_super_block_third *usb3)
{
u32 magic = fs32_to_cpu(sb, usb3->fs_magic);
printk("ufs_print_super_stuff\n");
printk(" magic: 0x%x\n", magic);
if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) {
printk(" fs_size: %llu\n", (unsigned long long)
fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size));
printk(" fs_dsize: %llu\n", (unsigned long long)
fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize));
printk(" bsize: %u\n",
fs32_to_cpu(sb, usb1->fs_bsize));
printk(" fsize: %u\n",
fs32_to_cpu(sb, usb1->fs_fsize));
printk(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname);
printk(" fs_sblockloc: %llu\n", (unsigned long long)
fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc));
printk(" cs_ndir(No of dirs): %llu\n", (unsigned long long)
fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir));
printk(" cs_nbfree(No of free blocks): %llu\n",
(unsigned long long)
fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree));
printk(KERN_INFO" cs_nifree(Num of free inodes): %llu\n",
(unsigned long long)
fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree));
printk(KERN_INFO" cs_nffree(Num of free frags): %llu\n",
(unsigned long long)
fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree));
printk(KERN_INFO" fs_maxsymlinklen: %u\n",
fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen));
} else {
printk(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno));
printk(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno));
printk(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno));
printk(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno));
printk(" cgoffset: %u\n",
fs32_to_cpu(sb, usb1->fs_cgoffset));
printk(" ~cgmask: 0x%x\n",
~fs32_to_cpu(sb, usb1->fs_cgmask));
printk(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size));
printk(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize));
printk(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg));
printk(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize));
printk(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize));
printk(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag));
printk(" fragshift: %u\n",
fs32_to_cpu(sb, usb1->fs_fragshift));
printk(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask));
printk(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift));
printk(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize));
printk(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc));
printk(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg));
printk(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg));
printk(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg));
printk(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr));
printk(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize));
printk(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize));
printk(" fstodb: %u\n",
fs32_to_cpu(sb, usb1->fs_fsbtodb));
printk(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos));
printk(" ndir %u\n",
fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir));
printk(" nifree %u\n",
fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree));
printk(" nbfree %u\n",
fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree));
printk(" nffree %u\n",
fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree));
}
printk("\n");
}
