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befs: constify stuff a bit 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2016-05-10 14:24:06 -04:00
parent e899108994
commit 22341d8f33
6 changed files with 34 additions and 31 deletions
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4
fs/befs/befs.h
View File

@ -116,7 +116,7 @@ BEFS_I(const struct inode *inode)
}
static inline befs_blocknr_t
iaddr2blockno(struct super_block *sb, befs_inode_addr * iaddr)
iaddr2blockno(struct super_block *sb, const befs_inode_addr *iaddr)
{
return ((iaddr->allocation_group << BEFS_SB(sb)->ag_shift) +
iaddr->start);
@ -141,7 +141,7 @@ befs_iaddrs_per_block(struct super_block *sb)
}
static inline int
befs_iaddr_is_empty(befs_inode_addr * iaddr)
befs_iaddr_is_empty(const befs_inode_addr *iaddr)
{
return (!iaddr->allocation_group) && (!iaddr->start) && (!iaddr->len);
}

16
fs/befs/btree.c
View File

@ -88,15 +88,15 @@ struct befs_btree_node {
static const befs_off_t befs_bt_inval = 0xffffffffffffffffULL;
/* local functions */
static int befs_btree_seekleaf(struct super_block *sb, befs_data_stream * ds,
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);
static int befs_bt_read_super(struct super_block *sb, befs_data_stream * ds,
static int befs_bt_read_super(struct super_block *sb, const befs_data_stream *ds,
befs_btree_super * sup);
static int befs_bt_read_node(struct super_block *sb, befs_data_stream * ds,
static int befs_bt_read_node(struct super_block *sb, const befs_data_stream *ds,
struct befs_btree_node *node,
befs_off_t node_off);
@ -134,7 +134,7 @@ static int befs_compare_strings(const void *key1, int keylen1,
* On failure, BEFS_ERR is returned.
*/
static int
befs_bt_read_super(struct super_block *sb, befs_data_stream * ds,
befs_bt_read_super(struct super_block *sb, const befs_data_stream *ds,
befs_btree_super * sup)
{
struct buffer_head *bh;
@ -193,7 +193,7 @@ befs_bt_read_super(struct super_block *sb, befs_data_stream * ds,
*/
static int
befs_bt_read_node(struct super_block *sb, befs_data_stream * ds,
befs_bt_read_node(struct super_block *sb, const befs_data_stream *ds,
struct befs_btree_node *node, befs_off_t node_off)
{
uint off = 0;
@ -247,7 +247,7 @@ befs_bt_read_node(struct super_block *sb, befs_data_stream * ds,
* actuall value stored with the key.
*/
int
befs_btree_find(struct super_block *sb, befs_data_stream * ds,
befs_btree_find(struct super_block *sb, const befs_data_stream *ds,
const char *key, befs_off_t * value)
{
struct befs_btree_node *this_node;
@ -416,7 +416,7 @@ befs_find_key(struct super_block *sb, struct befs_btree_node *node,
* 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,
befs_btree_read(struct super_block *sb, const befs_data_stream *ds,
loff_t key_no, size_t bufsize, char *keybuf, size_t * keysize,
befs_off_t * value)
{
@ -548,7 +548,7 @@ befs_btree_read(struct super_block *sb, befs_data_stream * ds,
* Also checks for an empty tree. If there are no keys, returns BEFS_BT_EMPTY.
*/
static int
befs_btree_seekleaf(struct super_block *sb, befs_data_stream * ds,
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)

4
fs/befs/btree.h
View File

@ -4,10 +4,10 @@
*/
int befs_btree_find(struct super_block *sb, befs_data_stream * ds,
int befs_btree_find(struct super_block *sb, const befs_data_stream *ds,
const char *key, befs_off_t * value);
int befs_btree_read(struct super_block *sb, befs_data_stream * ds,
int befs_btree_read(struct super_block *sb, const befs_data_stream *ds,
loff_t key_no, size_t bufsize, char *keybuf,
size_t * keysize, befs_off_t * value);

26
fs/befs/datastream.c
View File

@ -21,16 +21,16 @@
const befs_inode_addr BAD_IADDR = { 0, 0, 0 };
static int befs_find_brun_direct(struct super_block *sb,
befs_data_stream * data,
const befs_data_stream *data,
befs_blocknr_t blockno, befs_block_run * run);
static int befs_find_brun_indirect(struct super_block *sb,
befs_data_stream * data,
const befs_data_stream *data,
befs_blocknr_t blockno,
befs_block_run * run);
static int befs_find_brun_dblindirect(struct super_block *sb,
befs_data_stream * data,
const befs_data_stream *data,
befs_blocknr_t blockno,
befs_block_run * run);
@ -45,7 +45,7 @@ static int befs_find_brun_dblindirect(struct super_block *sb,
* if you don't need to know offset just set @off = NULL.
*/
struct buffer_head *
befs_read_datastream(struct super_block *sb, befs_data_stream * ds,
befs_read_datastream(struct super_block *sb, const befs_data_stream *ds,
befs_off_t pos, uint * off)
{
struct buffer_head *bh = NULL;
@ -87,7 +87,7 @@ befs_read_datastream(struct super_block *sb, befs_data_stream * ds,
* 2001-11-15 Will Dyson
*/
int
befs_fblock2brun(struct super_block *sb, befs_data_stream * data,
befs_fblock2brun(struct super_block *sb, const befs_data_stream *data,
befs_blocknr_t fblock, befs_block_run * run)
{
int err;
@ -122,8 +122,8 @@ befs_fblock2brun(struct super_block *sb, befs_data_stream * data,
* Returns the number of bytes read
*/
size_t
befs_read_lsymlink(struct super_block * sb, befs_data_stream * ds, void *buff,
befs_off_t len)
befs_read_lsymlink(struct super_block *sb, const befs_data_stream *ds,
void *buff, befs_off_t len)
{
befs_off_t bytes_read = 0; /* bytes readed */
u16 plen;
@ -163,7 +163,7 @@ befs_read_lsymlink(struct super_block * sb, befs_data_stream * ds, void *buff,
*/
befs_blocknr_t
befs_count_blocks(struct super_block * sb, befs_data_stream * ds)
befs_count_blocks(struct super_block *sb, const befs_data_stream *ds)
{
befs_blocknr_t blocks;
befs_blocknr_t datablocks; /* File data blocks */
@ -243,11 +243,11 @@ befs_count_blocks(struct super_block * sb, befs_data_stream * ds)
2001-11-15 Will Dyson
*/
static int
befs_find_brun_direct(struct super_block *sb, befs_data_stream * data,
befs_find_brun_direct(struct super_block *sb, const befs_data_stream *data,
befs_blocknr_t blockno, befs_block_run * run)
{
int i;
befs_block_run *array = data->direct;
const befs_block_run *array = data->direct;
befs_blocknr_t sum;
befs_blocknr_t max_block =
data->max_direct_range >> BEFS_SB(sb)->block_shift;
@ -304,7 +304,8 @@ befs_find_brun_direct(struct super_block *sb, befs_data_stream * data,
*/
static int
befs_find_brun_indirect(struct super_block *sb,
befs_data_stream * data, befs_blocknr_t blockno,
const befs_data_stream *data,
befs_blocknr_t blockno,
befs_block_run * run)
{
int i, j;
@ -412,7 +413,8 @@ befs_find_brun_indirect(struct super_block *sb,
*/
static int
befs_find_brun_dblindirect(struct super_block *sb,
befs_data_stream * data, befs_blocknr_t blockno,
const befs_data_stream *data,
befs_blocknr_t blockno,
befs_block_run * run)
{
int dblindir_indx;

11
fs/befs/datastream.h
View File

@ -4,16 +4,17 @@
*/
struct buffer_head *befs_read_datastream(struct super_block *sb,
befs_data_stream * ds, befs_off_t pos,
uint * off);
const befs_data_stream *ds,
befs_off_t pos, uint * off);
int befs_fblock2brun(struct super_block *sb, befs_data_stream * data,
int befs_fblock2brun(struct super_block *sb, const befs_data_stream *data,
befs_blocknr_t fblock, befs_block_run * run);
size_t befs_read_lsymlink(struct super_block *sb, befs_data_stream * data,
size_t befs_read_lsymlink(struct super_block *sb, const befs_data_stream *data,
void *buff, befs_off_t len);
befs_blocknr_t befs_count_blocks(struct super_block *sb, befs_data_stream * ds);
befs_blocknr_t befs_count_blocks(struct super_block *sb,
const befs_data_stream *ds);
extern const befs_inode_addr BAD_IADDR;

4
fs/befs/linuxvfs.c
View File

@ -157,7 +157,7 @@ befs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
{
struct inode *inode = NULL;
struct super_block *sb = dir->i_sb;
befs_data_stream *ds = &BEFS_I(dir)->i_data.ds;
const befs_data_stream *ds = &BEFS_I(dir)->i_data.ds;
befs_off_t offset;
int ret;
int utfnamelen;
@ -207,7 +207,7 @@ befs_readdir(struct file *file, struct dir_context *ctx)
{
struct inode *inode = file_inode(file);
struct super_block *sb = inode->i_sb;
befs_data_stream *ds = &BEFS_I(inode)->i_data.ds;
const befs_data_stream *ds = &BEFS_I(inode)->i_data.ds;
befs_off_t value;
int result;
size_t keysize;