void reiserfs_panic (struct super_block * sb, const char * fmt, ...)
{
do_reiserfs_warning(fmt);
printk (KERN_EMERG "REISERFS: panic (device %s): %s\n",
reiserfs_bdevname (sb), error_buf);
BUG ();
/* this is not actually called, but makes reiserfs_panic() "noreturn" */
panic ("REISERFS: panic (device %s): %s\n",
reiserfs_bdevname (sb), error_buf);
}
int reiserfs_proc_info_init(struct super_block *sb)
{
char b[BDEVNAME_SIZE];
char *s;
/* Some block devices use /'s */
strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
s = strchr(b, '/');
if (s)
*s = '!';
spin_lock_init(&__PINFO(sb).lock);
REISERFS_SB(sb)->procdir = proc_mkdir_data(b, 0, proc_info_root, sb);
if (REISERFS_SB(sb)->procdir) {
add_file(sb, "version", show_version);
add_file(sb, "super", show_super);
add_file(sb, "per-level", show_per_level);
add_file(sb, "bitmap", show_bitmap);
add_file(sb, "on-disk-super", show_on_disk_super);
add_file(sb, "oidmap", show_oidmap);
add_file(sb, "journal", show_journal);
return 0;
}
reiserfs_warning(sb, "cannot create /proc/%s/%s",
proc_info_root_name, b);
return 1;
}
static void _reiserfs_free_block (struct reiserfs_transaction_handle *th,
struct inode *inode, b_blocknr_t block,
int for_unformatted)
{
struct super_block * s = th->t_super;
struct reiserfs_super_block * rs;
struct buffer_head * sbh;
struct reiserfs_bitmap_info *apbi;
int nr, offset;
BUG_ON (!th->t_trans_id);
PROC_INFO_INC( s, free_block );
rs = SB_DISK_SUPER_BLOCK (s);
sbh = SB_BUFFER_WITH_SB (s);
apbi = SB_AP_BITMAP(s);
get_bit_address (s, block, &nr, &offset);
if (nr >= sb_bmap_nr (rs)) {
reiserfs_warning (s, "vs-4075: reiserfs_free_block: "
"block %lu is out of range on %s",
block, reiserfs_bdevname (s));
return;
}
reiserfs_prepare_for_journal(s, apbi[nr].bh, 1 ) ;
/* clear bit for the given block in bit map */
if (!reiserfs_test_and_clear_le_bit (offset, apbi[nr].bh->b_data)) {
reiserfs_warning (s, "vs-4080: reiserfs_free_block: "
"free_block (%s:%lu)[dev:blocknr]: bit already cleared",
reiserfs_bdevname (s), block);
}
apbi[nr].free_count ++;
journal_mark_dirty (th, s, apbi[nr].bh);
reiserfs_prepare_for_journal(s, sbh, 1) ;
/* update super block */
set_sb_free_blocks( rs, sb_free_blocks(rs) + 1 );
journal_mark_dirty (th, s, sbh);
if (for_unformatted)
DQUOT_FREE_BLOCK_NODIRTY(inode, 1);
}
/* No newline.. reiserfs_info calls can be followed by printk's */
void reiserfs_info (struct super_block *sb, const char * fmt, ...)
{
do_reiserfs_warning(fmt);
if (sb)
printk (KERN_NOTICE "ReiserFS: %s: %s",
reiserfs_bdevname (sb), error_buf);
else
printk (KERN_NOTICE "ReiserFS: %s", error_buf);
}
void reiserfs_warning (struct super_block *sb, const char * fmt, ...)
{
do_reiserfs_warning(fmt);
if (sb)
printk (KERN_WARNING "ReiserFS: %s: warning: %s\n",
reiserfs_bdevname (sb), error_buf);
else
printk (KERN_WARNING "ReiserFS: warning: %s\n", error_buf);
}
void reiserfs_abort(struct super_block *sb, int errno, const char *fmt, ...)
{
do_reiserfs_warning(fmt);
if (reiserfs_error_panic(sb)) {
panic(KERN_CRIT "REISERFS: panic (device %s): %s\n",
reiserfs_bdevname(sb), error_buf);
}
if (sb->s_flags & MS_RDONLY)
return;
printk(KERN_CRIT "REISERFS: abort (device %s): %s\n",
reiserfs_bdevname(sb), error_buf);
sb->s_flags |= MS_RDONLY;
reiserfs_journal_abort(sb, errno);
}
void reiserfs_panic(struct super_block *sb, const char *fmt, ...)
{
do_reiserfs_warning(fmt);
dump_stack();
panic(KERN_EMERG "REISERFS: panic (device %s): %s\n",
reiserfs_bdevname(sb), error_buf);
}
void reiserfs_debug (struct super_block *s, int level, const char * fmt, ...)
{
#ifdef CONFIG_REISERFS_CHECK
do_reiserfs_warning(fmt);
if (s)
printk (KERN_DEBUG "ReiserFS: %s: %s\n",
reiserfs_bdevname (s), error_buf);
else
printk (KERN_DEBUG "ReiserFS: %s\n", error_buf);
#endif
}
int reiserfs_proc_info_done(struct super_block *sb)
{
struct proc_dir_entry *de = REISERFS_SB(sb)->procdir;
if (de) {
char b[BDEVNAME_SIZE];
char *s;
/* Some block devices use /'s */
strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
s = strchr(b, '/');
if (s)
*s = '!';
remove_proc_subtree(b, proc_info_root);
REISERFS_SB(sb)->procdir = NULL;
}
return 0;
}
static int reiserfs_unlink (struct inode * dir, struct dentry *dentry)
{
int retval, err;
struct inode * inode;
struct reiserfs_dir_entry de;
INITIALIZE_PATH (path);
struct reiserfs_transaction_handle th ;
int jbegin_count;
unsigned long savelink;
inode = dentry->d_inode;
/* in this transaction we can be doing at max two balancings and update
two stat datas, we change quotas of the owner of the directory and of
the owner of the parent directory */
jbegin_count = JOURNAL_PER_BALANCE_CNT * 2 + 2 + 2 * (REISERFS_QUOTA_INIT_BLOCKS+REISERFS_QUOTA_TRANS_BLOCKS);
reiserfs_write_lock(dir->i_sb);
retval = journal_begin(&th, dir->i_sb, jbegin_count) ;
if (retval)
goto out_unlink;
de.de_gen_number_bit_string = NULL;
if ( (retval = reiserfs_find_entry (dir, dentry->d_name.name, dentry->d_name.len, &path, &de)) == NAME_NOT_FOUND) {
retval = -ENOENT;
goto end_unlink;
} else if (retval == IO_ERROR) {
retval = -EIO;
goto end_unlink;
}
reiserfs_update_inode_transaction(inode) ;
reiserfs_update_inode_transaction(dir) ;
if (de.de_objectid != inode->i_ino) {
// FIXME: compare key of an object and a key found in the
// entry
retval = -EIO;
goto end_unlink;
}
if (!inode->i_nlink) {
reiserfs_warning (inode->i_sb, "%s: deleting nonexistent file "
"(%s:%lu), %d", __FUNCTION__,
reiserfs_bdevname (inode->i_sb), inode->i_ino,
inode->i_nlink);
inode->i_nlink = 1;
}
inode->i_nlink--;
/*
* we schedule before doing the add_save_link call, save the link
* count so we don't race
*/
savelink = inode->i_nlink;
retval = reiserfs_cut_from_item (&th, &path, &(de.de_entry_key), dir, NULL, 0);
if (retval < 0) {
inode->i_nlink++;
goto end_unlink;
}
inode->i_ctime = CURRENT_TIME_SEC;
reiserfs_update_sd (&th, inode);
dir->i_size -= (de.de_entrylen + DEH_SIZE);
dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
reiserfs_update_sd (&th, dir);
if (!savelink)
/* prevent file from getting lost */
add_save_link (&th, inode, 0/* not truncate */);
retval = journal_end(&th, dir->i_sb, jbegin_count) ;
reiserfs_check_path(&path) ;
reiserfs_write_unlock(dir->i_sb);
return retval;
end_unlink:
pathrelse (&path);
err = journal_end(&th, dir->i_sb, jbegin_count) ;
reiserfs_check_path(&path) ;
if (err)
retval = err;
out_unlink:
reiserfs_write_unlock(dir->i_sb);
return retval;
}
