Create macros to generation set/get funcs for on disk structures

This commit is contained in:
Chris Mason 2007-12-12 14:39:46 -05:00 committed by David Woodhouse
parent fba66bd865
commit 140d96a562
4 changed files with 152 additions and 544 deletions

616
ctree.h
View File

@ -413,153 +413,27 @@ static inline void btrfs_set_##name(type *s, u##bits val) \
s->member = cpu_to_le##bits(val); \
}
static inline u64 btrfs_block_group_used(struct btrfs_block_group_item *bi)
{
return le64_to_cpu(bi->used);
}
BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item,
used, 64);
static inline void btrfs_set_block_group_used(struct
btrfs_block_group_item *bi,
u64 val)
{
bi->used = cpu_to_le64(val);
}
BTRFS_SETGET_STACK_FUNCS(inode_generation, struct btrfs_inode_item,
generation, 64);
static inline u64 btrfs_inode_generation(struct btrfs_inode_item *i)
{
return le64_to_cpu(i->generation);
}
static inline void btrfs_set_inode_generation(struct btrfs_inode_item *i,
u64 val)
{
i->generation = cpu_to_le64(val);
}
static inline u64 btrfs_inode_size(struct btrfs_inode_item *i)
{
return le64_to_cpu(i->size);
}
static inline void btrfs_set_inode_size(struct btrfs_inode_item *i, u64 val)
{
i->size = cpu_to_le64(val);
}
static inline u64 btrfs_inode_nblocks(struct btrfs_inode_item *i)
{
return le64_to_cpu(i->nblocks);
}
static inline void btrfs_set_inode_nblocks(struct btrfs_inode_item *i, u64 val)
{
i->nblocks = cpu_to_le64(val);
}
static inline u64 btrfs_inode_block_group(struct btrfs_inode_item *i)
{
return le64_to_cpu(i->block_group);
}
static inline void btrfs_set_inode_block_group(struct btrfs_inode_item *i,
u64 val)
{
i->block_group = cpu_to_le64(val);
}
static inline u32 btrfs_inode_nlink(struct btrfs_inode_item *i)
{
return le32_to_cpu(i->nlink);
}
static inline void btrfs_set_inode_nlink(struct btrfs_inode_item *i, u32 val)
{
i->nlink = cpu_to_le32(val);
}
static inline u32 btrfs_inode_uid(struct btrfs_inode_item *i)
{
return le32_to_cpu(i->uid);
}
static inline void btrfs_set_inode_uid(struct btrfs_inode_item *i, u32 val)
{
i->uid = cpu_to_le32(val);
}
static inline u32 btrfs_inode_gid(struct btrfs_inode_item *i)
{
return le32_to_cpu(i->gid);
}
static inline void btrfs_set_inode_gid(struct btrfs_inode_item *i, u32 val)
{
i->gid = cpu_to_le32(val);
}
static inline u32 btrfs_inode_mode(struct btrfs_inode_item *i)
{
return le32_to_cpu(i->mode);
}
static inline void btrfs_set_inode_mode(struct btrfs_inode_item *i, u32 val)
{
i->mode = cpu_to_le32(val);
}
static inline u32 btrfs_inode_rdev(struct btrfs_inode_item *i)
{
return le32_to_cpu(i->rdev);
}
static inline void btrfs_set_inode_rdev(struct btrfs_inode_item *i, u32 val)
{
i->rdev = cpu_to_le32(val);
}
static inline u16 btrfs_inode_flags(struct btrfs_inode_item *i)
{
return le16_to_cpu(i->flags);
}
static inline void btrfs_set_inode_flags(struct btrfs_inode_item *i, u16 val)
{
i->flags = cpu_to_le16(val);
}
static inline u16 btrfs_inode_compat_flags(struct btrfs_inode_item *i)
{
return le16_to_cpu(i->compat_flags);
}
static inline void btrfs_set_inode_compat_flags(struct btrfs_inode_item *i,
u16 val)
{
i->compat_flags = cpu_to_le16(val);
}
static inline u64 btrfs_timespec_sec(struct btrfs_inode_timespec *ts)
{
return le64_to_cpu(ts->sec);
}
static inline void btrfs_set_timespec_sec(struct btrfs_inode_timespec *ts,
u64 val)
{
ts->sec = cpu_to_le64(val);
}
static inline u32 btrfs_timespec_nsec(struct btrfs_inode_timespec *ts)
{
return le32_to_cpu(ts->nsec);
}
static inline void btrfs_set_timespec_nsec(struct btrfs_inode_timespec *ts,
u32 val)
{
ts->nsec = cpu_to_le32(val);
}
BTRFS_SETGET_STACK_FUNCS(inode_size, struct btrfs_inode_item, size, 64);
BTRFS_SETGET_STACK_FUNCS(inode_nblocks, struct btrfs_inode_item, nblocks, 64);
BTRFS_SETGET_STACK_FUNCS(inode_block_group, struct btrfs_inode_item,
block_group, 64);
BTRFS_SETGET_STACK_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32);
BTRFS_SETGET_STACK_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32);
BTRFS_SETGET_STACK_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32);
BTRFS_SETGET_STACK_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32);
BTRFS_SETGET_STACK_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 32);
BTRFS_SETGET_STACK_FUNCS(inode_flags, struct btrfs_inode_item, flags, 16);
BTRFS_SETGET_STACK_FUNCS(inode_compat_flags, struct btrfs_inode_item,
compat_flags, 16);
BTRFS_SETGET_STACK_FUNCS(timpsec_sec, struct btrfs_inode_timespec, sec, 64);
BTRFS_SETGET_STACK_FUNCS(timpsec_nsec, struct btrfs_inode_timespec, nsec, 32);
BTRFS_SETGET_STACK_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32);
BTRFS_SETGET_STACK_FUNCS(inode_ref_name_len, struct btrfs_inode_ref,
@ -594,60 +468,17 @@ static inline void btrfs_set_node_ptr_generation(struct btrfs_node *n, int nr,
n->ptrs[nr].generation = cpu_to_le64(val);
}
static inline u32 btrfs_item_offset(struct btrfs_item *item)
{
return le32_to_cpu(item->offset);
}
static inline void btrfs_set_item_offset(struct btrfs_item *item, u32 val)
{
item->offset = cpu_to_le32(val);
}
BTRFS_SETGET_STACK_FUNCS(item_offset, struct btrfs_item, offset, 32);
static inline u32 btrfs_item_end(struct btrfs_item *item)
{
return le32_to_cpu(item->offset) + le32_to_cpu(item->size);
}
static inline u32 btrfs_item_size(struct btrfs_item *item)
{
return le32_to_cpu(item->size);
}
static inline void btrfs_set_item_size(struct btrfs_item *item, u32 val)
{
item->size = cpu_to_le32(val);
}
static inline u8 btrfs_dir_type(struct btrfs_dir_item *d)
{
return d->type;
}
static inline void btrfs_set_dir_type(struct btrfs_dir_item *d, u8 val)
{
d->type = val;
}
static inline u16 btrfs_dir_name_len(struct btrfs_dir_item *d)
{
return le16_to_cpu(d->name_len);
}
static inline void btrfs_set_dir_name_len(struct btrfs_dir_item *d, u16 val)
{
d->name_len = cpu_to_le16(val);
}
static inline u16 btrfs_dir_data_len(struct btrfs_dir_item *d)
{
return le16_to_cpu(d->data_len);
}
static inline void btrfs_set_dir_data_len(struct btrfs_dir_item *d, u16 val)
{
d->data_len = cpu_to_le16(val);
}
BTRFS_SETGET_STACK_FUNCS(item_size, struct btrfs_item, size, 32);
BTRFS_SETGET_STACK_FUNCS(dir_type, struct btrfs_dir_item, type, 8);
BTRFS_SETGET_STACK_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16);
BTRFS_SETGET_STACK_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16);
static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu,
struct btrfs_disk_key *disk)
@ -665,99 +496,27 @@ static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk,
disk->objectid = cpu_to_le64(cpu->objectid);
}
static inline u64 btrfs_disk_key_objectid(struct btrfs_disk_key *disk)
{
return le64_to_cpu(disk->objectid);
}
BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key,
objectid, 64);
BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64);
BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8);
static inline void btrfs_set_disk_key_objectid(struct btrfs_disk_key *disk,
u64 val)
{
disk->objectid = cpu_to_le64(val);
}
static inline u64 btrfs_disk_key_offset(struct btrfs_disk_key *disk)
{
return le64_to_cpu(disk->offset);
}
static inline void btrfs_set_disk_key_offset(struct btrfs_disk_key *disk,
u64 val)
{
disk->offset = cpu_to_le64(val);
}
static inline u8 btrfs_disk_key_type(struct btrfs_disk_key *key)
static inline u8 btrfs_key_type(struct btrfs_key *key)
{
return key->type;
}
static inline void btrfs_set_disk_key_type(struct btrfs_disk_key *key, u8 val)
static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val)
{
key->type = val;
}
static inline u32 btrfs_key_type(struct btrfs_key *key)
{
return key->type;
}
static inline void btrfs_set_key_type(struct btrfs_key *key, u32 val)
{
key->type = val;
}
static inline u64 btrfs_header_bytenr(struct btrfs_header *h)
{
return le64_to_cpu(h->bytenr);
}
static inline void btrfs_set_header_bytenr(struct btrfs_header *h, u64 bytenr)
{
h->bytenr = cpu_to_le64(bytenr);
}
static inline u64 btrfs_header_generation(struct btrfs_header *h)
{
return le64_to_cpu(h->generation);
}
static inline void btrfs_set_header_generation(struct btrfs_header *h,
u64 val)
{
h->generation = cpu_to_le64(val);
}
static inline u64 btrfs_header_owner(struct btrfs_header *h)
{
return le64_to_cpu(h->owner);
}
static inline void btrfs_set_header_owner(struct btrfs_header *h,
u64 val)
{
h->owner = cpu_to_le64(val);
}
static inline u32 btrfs_header_nritems(struct btrfs_header *h)
{
return le32_to_cpu(h->nritems);
}
static inline void btrfs_set_header_nritems(struct btrfs_header *h, u32 val)
{
h->nritems = cpu_to_le32(val);
}
static inline u16 btrfs_header_flags(struct btrfs_header *h)
{
return le16_to_cpu(h->flags);
}
static inline void btrfs_set_header_flags(struct btrfs_header *h, u16 val)
{
h->flags = cpu_to_le16(val);
}
BTRFS_SETGET_STACK_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64);
BTRFS_SETGET_STACK_FUNCS(header_generation, struct btrfs_header,
generation, 64);
BTRFS_SETGET_STACK_FUNCS(header_owner, struct btrfs_header, owner, 64);
BTRFS_SETGET_STACK_FUNCS(header_nritems, struct btrfs_header, nritems, 32);
BTRFS_SETGET_STACK_FUNCS(header_flags, struct btrfs_header, flags, 16);
static inline int btrfs_header_level(struct btrfs_header *h)
{
@ -775,211 +534,43 @@ static inline int btrfs_is_leaf(struct btrfs_node *n)
return (btrfs_header_level(&n->header) == 0);
}
static inline u64 btrfs_root_bytenr(struct btrfs_root_item *item)
{
return le64_to_cpu(item->bytenr);
}
static inline void btrfs_set_root_bytenr(struct btrfs_root_item *item, u64 val)
{
item->bytenr = cpu_to_le64(val);
}
static inline u64 btrfs_root_byte_limit(struct btrfs_root_item *item)
{
return le64_to_cpu(item->byte_limit);
}
static inline void btrfs_set_root_byte_limit(struct btrfs_root_item *item,
u64 val)
{
item->byte_limit = cpu_to_le64(val);
}
static inline u8 btrfs_root_level(struct btrfs_root_item *item)
{
return item->level;
}
static inline void btrfs_set_root_level(struct btrfs_root_item *item, u8 val)
{
item->level = val;
}
static inline u64 btrfs_root_dirid(struct btrfs_root_item *item)
{
return le64_to_cpu(item->root_dirid);
}
static inline void btrfs_set_root_dirid(struct btrfs_root_item *item, u64 val)
{
item->root_dirid = cpu_to_le64(val);
}
static inline u32 btrfs_root_refs(struct btrfs_root_item *item)
{
return le32_to_cpu(item->refs);
}
static inline void btrfs_set_root_refs(struct btrfs_root_item *item, u32 val)
{
item->refs = cpu_to_le32(val);
}
static inline u32 btrfs_root_flags(struct btrfs_root_item *item)
{
return le32_to_cpu(item->flags);
}
static inline void btrfs_set_root_flags(struct btrfs_root_item *item, u32 val)
{
item->flags = cpu_to_le32(val);
}
static inline void btrfs_set_root_bytes_used(struct btrfs_root_item *item,
u64 val)
{
item->bytes_used = cpu_to_le64(val);
}
static inline u64 btrfs_root_bytes_used(struct btrfs_root_item *item)
{
return le64_to_cpu(item->bytes_used);
}
static inline u64 btrfs_super_bytenr(struct btrfs_super_block *s)
{
return le64_to_cpu(s->bytenr);
}
static inline void btrfs_set_super_bytenr(struct btrfs_super_block *s, u64 val)
{
s->bytenr = cpu_to_le64(val);
}
static inline u64 btrfs_super_generation(struct btrfs_super_block *s)
{
return le64_to_cpu(s->generation);
}
static inline void btrfs_set_super_generation(struct btrfs_super_block *s,
u64 val)
{
s->generation = cpu_to_le64(val);
}
static inline u8 btrfs_super_root_level(struct btrfs_super_block *s)
{
return s->root_level;
}
static inline void btrfs_set_super_root_level(struct btrfs_super_block *s,
u8 val)
{
s->root_level = val;
}
static inline u64 btrfs_super_root(struct btrfs_super_block *s)
{
return le64_to_cpu(s->root);
}
static inline void btrfs_set_super_root(struct btrfs_super_block *s, u64 val)
{
s->root = cpu_to_le64(val);
}
static inline u64 btrfs_super_total_bytes(struct btrfs_super_block *s)
{
return le64_to_cpu(s->total_bytes);
}
static inline void btrfs_set_super_total_bytes(struct btrfs_super_block *s,
u64 val)
{
s->total_bytes = cpu_to_le64(val);
}
static inline u64 btrfs_super_bytes_used(struct btrfs_super_block *s)
{
return le64_to_cpu(s->bytes_used);
}
static inline void btrfs_set_super_bytes_used(struct btrfs_super_block *s,
u64 val)
{
s->bytes_used = cpu_to_le64(val);
}
static inline u32 btrfs_super_sectorsize(struct btrfs_super_block *s)
{
return le32_to_cpu(s->sectorsize);
}
static inline void btrfs_set_super_sectorsize(struct btrfs_super_block *s,
u32 val)
{
s->sectorsize = cpu_to_le32(val);
}
static inline u32 btrfs_super_nodesize(struct btrfs_super_block *s)
{
return le32_to_cpu(s->nodesize);
}
static inline void btrfs_set_super_nodesize(struct btrfs_super_block *s,
u32 val)
{
s->nodesize = cpu_to_le32(val);
}
static inline u32 btrfs_super_leafsize(struct btrfs_super_block *s)
{
return le32_to_cpu(s->leafsize);
}
static inline void btrfs_set_super_leafsize(struct btrfs_super_block *s,
u32 val)
{
s->leafsize = cpu_to_le32(val);
}
static inline u32 btrfs_super_stripesize(struct btrfs_super_block *s)
{
return le32_to_cpu(s->stripesize);
}
static inline void btrfs_set_super_stripesize(struct btrfs_super_block *s,
u32 val)
{
s->stripesize = cpu_to_le32(val);
}
static inline u64 btrfs_super_root_dir(struct btrfs_super_block *s)
{
return le64_to_cpu(s->root_dir_objectid);
}
static inline void btrfs_set_super_root_dir(struct btrfs_super_block *s, u64
val)
{
s->root_dir_objectid = cpu_to_le64(val);
}
BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64);
BTRFS_SETGET_STACK_FUNCS(root_byte_limit, struct btrfs_root_item,
byte_limit, 64);
BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8);
BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64);
BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32);
BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 32);
BTRFS_SETGET_STACK_FUNCS(root_bytes_used, struct btrfs_root_item,
bytes_used, 64);
BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64);
BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block,
generation, 64);
BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block,
root_level, 8);
BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64);
BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block,
total_bytes, 64);
BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block,
bytes_used, 64);
BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block,
sectorsize, 32);
BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block,
nodesize, 32);
BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block,
leafsize, 32);
BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block,
stripesize, 32);
BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block,
root_dir_objectid, 64);
static inline u8 *btrfs_leaf_data(struct btrfs_leaf *l)
{
return (u8 *)l->items;
}
static inline int btrfs_file_extent_type(struct btrfs_file_extent_item *e)
{
return e->type;
}
static inline void btrfs_set_file_extent_type(struct btrfs_file_extent_item *e,
u8 val)
{
e->type = val;
}
BTRFS_SETGET_STACK_FUNCS(file_extent_type, struct btrfs_file_extent_item,
type, 8);
static inline char *btrfs_file_extent_inline_start(struct
btrfs_file_extent_item *e)
@ -999,67 +590,16 @@ static inline u32 btrfs_file_extent_inline_len(struct btrfs_item *e)
return btrfs_item_size(e) - (unsigned long)(&fe->disk_bytenr);
}
static inline u64 btrfs_file_extent_disk_bytenr(struct btrfs_file_extent_item
*e)
{
return le64_to_cpu(e->disk_bytenr);
}
static inline void btrfs_set_file_extent_disk_bytenr(struct
btrfs_file_extent_item
*e, u64 val)
{
e->disk_bytenr = cpu_to_le64(val);
}
static inline u64 btrfs_file_extent_generation(struct btrfs_file_extent_item *e)
{
return le64_to_cpu(e->generation);
}
static inline void btrfs_set_file_extent_generation(struct
btrfs_file_extent_item *e,
u64 val)
{
e->generation = cpu_to_le64(val);
}
static inline u64 btrfs_file_extent_disk_num_bytes(struct
btrfs_file_extent_item *e)
{
return le64_to_cpu(e->disk_num_bytes);
}
static inline void btrfs_set_file_extent_disk_num_bytes(struct
btrfs_file_extent_item
*e, u64 val)
{
e->disk_num_bytes = cpu_to_le64(val);
}
static inline u64 btrfs_file_extent_offset(struct btrfs_file_extent_item *e)
{
return le64_to_cpu(e->offset);
}
static inline void btrfs_set_file_extent_offset(struct btrfs_file_extent_item
*e, u64 val)
{
e->offset = cpu_to_le64(val);
}
static inline u64 btrfs_file_extent_num_bytes(struct btrfs_file_extent_item
*e)
{
return le64_to_cpu(e->num_bytes);
}
static inline void btrfs_set_file_extent_num_bytes(struct
btrfs_file_extent_item *e,
u64 val)
{
e->num_bytes = cpu_to_le64(val);
}
BTRFS_SETGET_STACK_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item,
disk_bytenr, 64);
BTRFS_SETGET_STACK_FUNCS(file_extent_generation, struct btrfs_file_extent_item,
generation, 64);
BTRFS_SETGET_STACK_FUNCS(file_extent_disk_num_bytes,
struct btrfs_file_extent_item, disk_num_bytes, 64);
BTRFS_SETGET_STACK_FUNCS(file_extent_offset, struct btrfs_file_extent_item,
offset, 64);
BTRFS_SETGET_STACK_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item,
num_bytes, 64);
/* helper function to cast into the data area of the leaf. */
#define btrfs_item_ptr(leaf, slot, type) \
@ -1168,4 +708,8 @@ int btrfs_lookup_csum(struct btrfs_trans_handle *trans, struct btrfs_root
int btrfs_csum_file_block(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_inode_item *inode,
u64 objectid, u64 offset, char *data, size_t len);
int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
const char *name, int name_len,
u64 inode_objectid, u64 ref_objectid);
#endif

View File

@ -24,6 +24,59 @@
#include "disk-io.h"
#include "transaction.h"
int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
const char *name, int name_len,
u64 inode_objectid, u64 ref_objectid)
{
struct btrfs_path path;
struct btrfs_key key;
struct btrfs_inode_ref *ref;
char *ptr;
int ret;
int ins_len = name_len + sizeof(*ref);
key.objectid = inode_objectid;
key.offset = ref_objectid;
btrfs_set_key_type(&key, BTRFS_INODE_REF_KEY);
btrfs_init_path(&path);
ret = btrfs_insert_empty_item(trans, root, &path, &key,
ins_len);
if (ret == -EEXIST) {
#if 0
u32 old_size;
if (find_name_in_backref(path, name, name_len, &ref))
goto out;
old_size = btrfs_item_size_nr(path->nodes[0], path->slots[0]);
ret = btrfs_extend_item(trans, root, path, ins_len);
BUG_ON(ret);
ref = btrfs_item_ptr(path->nodes[0], path->slots[0],
struct btrfs_inode_ref);
ref = (struct btrfs_inode_ref *)((unsigned long)ref + old_size);
btrfs_set_inode_ref_name_len(path->nodes[0], ref, name_len);
ptr = (unsigned long)(ref + 1);
ret = 0;
#endif
goto out;
} else if (ret < 0) {
goto out;
} else {
ref = btrfs_item_ptr(&path.nodes[0]->leaf, path.slots[0],
struct btrfs_inode_ref);
btrfs_set_inode_ref_name_len(ref, name_len);
ptr = (char *)(ref + 1);
}
memcpy(ptr, name, name_len);
dirty_tree_block(trans, root, path.nodes[0]);
out:
btrfs_release_path(root, &path);
return ret;
}
int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root
*root, u64 objectid, struct btrfs_inode_item
*inode_item)

View File

@ -138,6 +138,14 @@ typedef u32 __bitwise __be32;
typedef u64 __bitwise __le64;
typedef u64 __bitwise __be64;
/* Macros to generate set/get funcs for the struct fields
* assume there is a lefoo_to_cpu for every type, so lets make a simple
* one for u8:
*/
#define le8_to_cpu(v) (v)
#define cpu_to_le8(v) (v)
#define __le8 u8
#if __BYTE_ORDER == __BIG_ENDIAN
#define cpu_to_le64(x) ((__force __le64)(u64)(bswap_64(x)))
#define le64_to_cpu(x) ((__force u64)(__le64)(bswap_64(x)))

19
mkfs.c
View File

@ -56,9 +56,9 @@ static int __make_root_dir(struct btrfs_trans_handle *trans,
memset(&inode_item, 0, sizeof(inode_item));
btrfs_set_inode_generation(&inode_item, root->fs_info->generation);
btrfs_set_inode_size(&inode_item, 6);
btrfs_set_inode_size(&inode_item, 0);
btrfs_set_inode_nlink(&inode_item, 1);
btrfs_set_inode_nblocks(&inode_item, 1);
btrfs_set_inode_nblocks(&inode_item, 0);
btrfs_set_inode_mode(&inode_item, S_IFDIR | 0555);
if (root->fs_info->tree_root == root)
@ -67,12 +67,8 @@ static int __make_root_dir(struct btrfs_trans_handle *trans,
ret = btrfs_insert_inode(trans, root, objectid, &inode_item);
if (ret)
goto error;
ret = btrfs_insert_dir_item(trans, root, buf, 1, objectid,
&inode_map, BTRFS_FT_DIR);
if (ret)
goto error;
ret = btrfs_insert_dir_item(trans, root, buf, 2, objectid,
&inode_map, BTRFS_FT_DIR);
ret = btrfs_insert_inode_ref(trans, root, "..", 2, objectid, objectid);
if (ret)
goto error;
btrfs_set_root_dirid(&root->root_item, objectid);
@ -173,6 +169,13 @@ static int make_root_dir(int fd) {
&location, BTRFS_FT_DIR);
if (ret)
goto err;
ret = btrfs_insert_inode_ref(trans, root->fs_info->tree_root,
"default", 7, location.objectid,
BTRFS_ROOT_TREE_DIR_OBJECTID);
if (ret)
goto err;
btrfs_commit_transaction(trans, root, root->fs_info->disk_super);
ret = close_ctree(root, &super);
err: