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fs/adfs: clean up indirect disc addresses and fragment IDs

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We use a variety of different names for the indirect disc address of
the current object, use a variety of different types, and print it in
a variety of different ways. Bring some consistency to this by naming
it "indaddr", use u32 or __u32 as the type since it fits in 32-bits,
and always print it with %06x (with no leading hex prefix.)

When printing it was a directory identifer, use "dir %06x" otherwise
use "object %06x".

Do the same for fragment IDs and the parent indirect disc addresses.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Russell King 2019-06-04 14:49:57 +01:00 committed by Al Viro
parent ceb3b10613
commit 5ed70bb477
7 changed files with 41 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
fs/adfs/adfs.h
View File

@ -24,7 +24,7 @@
*/
struct adfs_inode_info {
loff_t mmu_private;
unsigned long parent_id; /* object id of parent */
__u32 parent_id; /* parent indirect disc address */
__u32 loadaddr; /* RISC OS load address */
__u32 execaddr; /* RISC OS exec address */
unsigned int filetype; /* RISC OS file type */
@ -86,7 +86,7 @@ struct adfs_dir {
struct buffer_head **bh_fplus;
unsigned int pos;
unsigned int parent_id;
__u32 parent_id;
struct adfs_dirheader dirhead;
union adfs_dirtail dirtail;
@ -98,7 +98,7 @@ struct adfs_dir {
#define ADFS_MAX_NAME_LEN (256 + 4) /* +4 for ,xyz hex filetype suffix */
struct object_info {
__u32 parent_id; /* parent object id */
__u32 file_id; /* object id */
__u32 indaddr; /* indirect disc addr */
__u32 loadaddr; /* load address */
__u32 execaddr; /* execution address */
__u32 size; /* size */
@ -111,7 +111,8 @@ struct object_info {
};
struct adfs_dir_ops {
int (*read)(struct super_block *sb, unsigned int id, unsigned int sz, struct adfs_dir *dir);
int (*read)(struct super_block *sb, unsigned int indaddr,
unsigned int size, struct adfs_dir *dir);
int (*setpos)(struct adfs_dir *dir, unsigned int fpos);
int (*getnext)(struct adfs_dir *dir, struct object_info *obj);
int (*update)(struct adfs_dir *dir, struct object_info *obj);
@ -134,7 +135,7 @@ int adfs_write_inode(struct inode *inode, struct writeback_control *wbc);
int adfs_notify_change(struct dentry *dentry, struct iattr *attr);
/* map.c */
extern int adfs_map_lookup(struct super_block *sb, unsigned int frag_id, unsigned int offset);
int adfs_map_lookup(struct super_block *sb, u32 frag_id, unsigned int offset);
extern unsigned int adfs_map_free(struct super_block *sb);
/* Misc */
@ -180,18 +181,17 @@ static inline __u32 signed_asl(__u32 val, signed int shift)
*
* The root directory ID should always be looked up in the map [3.4]
*/
static inline int
__adfs_block_map(struct super_block *sb, unsigned int object_id,
unsigned int block)
static inline int __adfs_block_map(struct super_block *sb, u32 indaddr,
unsigned int block)
{
if (object_id & 255) {
if (indaddr & 255) {
unsigned int off;
off = (object_id & 255) - 1;
off = (indaddr & 255) - 1;
block += off << ADFS_SB(sb)->s_log2sharesize;
}
return adfs_map_lookup(sb, object_id >> 8, block);
return adfs_map_lookup(sb, indaddr >> 8, block);
}
/* Return the disc record from the map */

9
fs/adfs/dir.c
View File

@ -95,7 +95,7 @@ adfs_readdir(struct file *file, struct dir_context *ctx)
goto unlock_out;
while (ops->getnext(&dir, &obj) == 0) {
if (!dir_emit(ctx, obj.name, obj.name_len,
obj.file_id, DT_UNKNOWN))
obj.indaddr, DT_UNKNOWN))
break;
ctx->pos++;
}
@ -116,8 +116,8 @@ adfs_dir_update(struct super_block *sb, struct object_info *obj, int wait)
const struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
struct adfs_dir dir;
printk(KERN_INFO "adfs_dir_update: object %06X in dir %06X\n",
obj->file_id, obj->parent_id);
printk(KERN_INFO "adfs_dir_update: object %06x in dir %06x\n",
obj->indaddr, obj->parent_id);
if (!ops->update) {
ret = -EINVAL;
@ -181,7 +181,8 @@ static int adfs_dir_lookup_byname(struct inode *inode, const struct qstr *qstr,
goto out;
if (ADFS_I(inode)->parent_id != dir.parent_id) {
adfs_error(sb, "parent directory changed under me! (%lx but got %x)\n",
adfs_error(sb,
"parent directory changed under me! (%06x but got %06x)\n",
ADFS_I(inode)->parent_id, dir.parent_id);
ret = -EIO;
goto free_out;

37
fs/adfs/dir_f.c
View File

@ -126,12 +126,9 @@ adfs_dir_checkbyte(const struct adfs_dir *dir)
return (dircheck ^ (dircheck >> 8) ^ (dircheck >> 16) ^ (dircheck >> 24)) & 0xff;
}
/*
* Read and check that a directory is valid
*/
static int
adfs_dir_read(struct super_block *sb, unsigned long object_id,
unsigned int size, struct adfs_dir *dir)
/* Read and check that a directory is valid */
static int adfs_dir_read(struct super_block *sb, u32 indaddr,
unsigned int size, struct adfs_dir *dir)
{
const unsigned int blocksize_bits = sb->s_blocksize_bits;
int blk = 0;
@ -151,10 +148,10 @@ adfs_dir_read(struct super_block *sb, unsigned long object_id,
for (blk = 0; blk < size; blk++) {
int phys;
phys = __adfs_block_map(sb, object_id, blk);
phys = __adfs_block_map(sb, indaddr, blk);
if (!phys) {
adfs_error(sb, "dir object %lX has a hole at offset %d",
object_id, blk);
adfs_error(sb, "dir %06x has a hole at offset %d",
indaddr, blk);
goto release_buffers;
}
@ -182,8 +179,7 @@ adfs_dir_read(struct super_block *sb, unsigned long object_id,
return 0;
bad_dir:
adfs_error(sb, "corrupted directory fragment %lX",
object_id);
adfs_error(sb, "dir %06x is corrupted", indaddr);
release_buffers:
for (blk -= 1; blk >= 0; blk -= 1)
brelse(dir->bh[blk]);
@ -210,7 +206,7 @@ adfs_dir2obj(struct adfs_dir *dir, struct object_info *obj,
}
obj->name_len = name_len;
obj->file_id = adfs_readval(de->dirinddiscadd, 3);
obj->indaddr = adfs_readval(de->dirinddiscadd, 3);
obj->loadaddr = adfs_readval(de->dirload, 4);
obj->execaddr = adfs_readval(de->direxec, 4);
obj->size = adfs_readval(de->dirlen, 4);
@ -225,7 +221,7 @@ adfs_dir2obj(struct adfs_dir *dir, struct object_info *obj,
static inline void
adfs_obj2dir(struct adfs_direntry *de, struct object_info *obj)
{
adfs_writeval(de->dirinddiscadd, 3, obj->file_id);
adfs_writeval(de->dirinddiscadd, 3, obj->indaddr);
adfs_writeval(de->dirload, 4, obj->loadaddr);
adfs_writeval(de->direxec, 4, obj->execaddr);
adfs_writeval(de->dirlen, 4, obj->size);
@ -311,8 +307,7 @@ __adfs_dir_put(struct adfs_dir *dir, int pos, struct object_info *obj)
* the caller is responsible for holding the necessary
* locks.
*/
static int
adfs_dir_find_entry(struct adfs_dir *dir, unsigned long object_id)
static int adfs_dir_find_entry(struct adfs_dir *dir, u32 indaddr)
{
int pos, ret;
@ -324,7 +319,7 @@ adfs_dir_find_entry(struct adfs_dir *dir, unsigned long object_id)
if (!__adfs_dir_get(dir, pos, &obj))
break;
if (obj.file_id == object_id) {
if (obj.indaddr == indaddr) {
ret = pos;
break;
}
@ -333,15 +328,15 @@ adfs_dir_find_entry(struct adfs_dir *dir, unsigned long object_id)
return ret;
}
static int
adfs_f_read(struct super_block *sb, unsigned int id, unsigned int sz, struct adfs_dir *dir)
static int adfs_f_read(struct super_block *sb, u32 indaddr, unsigned int size,
struct adfs_dir *dir)
{
int ret;
if (sz != ADFS_NEWDIR_SIZE)
if (size != ADFS_NEWDIR_SIZE)
return -EIO;
ret = adfs_dir_read(sb, id, sz, dir);
ret = adfs_dir_read(sb, indaddr, size, dir);
if (ret)
adfs_error(sb, "unable to read directory");
else
@ -378,7 +373,7 @@ adfs_f_update(struct adfs_dir *dir, struct object_info *obj)
struct super_block *sb = dir->sb;
int ret, i;
ret = adfs_dir_find_entry(dir, obj->file_id);
ret = adfs_dir_find_entry(dir, obj->indaddr);
if (ret < 0) {
adfs_error(dir->sb, "unable to locate entry to update");
goto out;

2
fs/adfs/dir_fplus.c
View File

@ -180,7 +180,7 @@ adfs_fplus_getnext(struct adfs_dir *dir, struct object_info *obj)
obj->loadaddr = le32_to_cpu(bde.bigdirload);
obj->execaddr = le32_to_cpu(bde.bigdirexec);
obj->size = le32_to_cpu(bde.bigdirlen);
obj->file_id = le32_to_cpu(bde.bigdirindaddr);
obj->indaddr = le32_to_cpu(bde.bigdirindaddr);
obj->attr = le32_to_cpu(bde.bigdirattr);
obj->name_len = le32_to_cpu(bde.bigdirobnamelen);

4
fs/adfs/inode.c
View File

@ -250,7 +250,7 @@ adfs_iget(struct super_block *sb, struct object_info *obj)
inode->i_uid = ADFS_SB(sb)->s_uid;
inode->i_gid = ADFS_SB(sb)->s_gid;
inode->i_ino = obj->file_id;
inode->i_ino = obj->indaddr;
inode->i_size = obj->size;
set_nlink(inode, 2);
inode->i_blocks = (inode->i_size + sb->s_blocksize - 1) >>
@ -358,7 +358,7 @@ int adfs_write_inode(struct inode *inode, struct writeback_control *wbc)
struct object_info obj;
int ret;
obj.file_id = inode->i_ino;
obj.indaddr = inode->i_ino;
obj.name_len = 0;
obj.parent_id = ADFS_I(inode)->parent_id;
obj.loadaddr = ADFS_I(inode)->loadaddr;

14
fs/adfs/map.c
View File

@ -66,9 +66,8 @@ static DEFINE_RWLOCK(adfs_map_lock);
* output of:
* gcc -D__KERNEL__ -O2 -I../../include -o - -S map.c
*/
static int
lookup_zone(const struct adfs_discmap *dm, const unsigned int idlen,
const unsigned int frag_id, unsigned int *offset)
static int lookup_zone(const struct adfs_discmap *dm, const unsigned int idlen,
const u32 frag_id, unsigned int *offset)
{
const unsigned int mapsize = dm->dm_endbit;
const u32 idmask = (1 << idlen) - 1;
@ -187,9 +186,8 @@ error:
return 0;
}
static int
scan_map(struct adfs_sb_info *asb, unsigned int zone,
const unsigned int frag_id, unsigned int mapoff)
static int scan_map(struct adfs_sb_info *asb, unsigned int zone,
const u32 frag_id, unsigned int mapoff)
{
const unsigned int idlen = asb->s_idlen;
struct adfs_discmap *dm, *dm_end;
@ -243,9 +241,7 @@ adfs_map_free(struct super_block *sb)
return signed_asl(total, asb->s_map2blk);
}
int
adfs_map_lookup(struct super_block *sb, unsigned int frag_id,
unsigned int offset)
int adfs_map_lookup(struct super_block *sb, u32 frag_id, unsigned int offset)
{
struct adfs_sb_info *asb = ADFS_SB(sb);
unsigned int zone, mapoff;

2
fs/adfs/super.c
View File

@ -462,7 +462,7 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
dr = adfs_map_discrecord(asb->s_map);
root_obj.parent_id = root_obj.file_id = le32_to_cpu(dr->root);
root_obj.parent_id = root_obj.indaddr = le32_to_cpu(dr->root);
root_obj.name_len = 0;
/* Set root object date as 01 Jan 1987 00:00:00 */
root_obj.loadaddr = 0xfff0003f;