struct aufs_branch *stobr(struct super_block *sb, aufs_bindex_t bindex)
{
SiMustAnyLock(sb);
AuDebugOn(bindex < 0 || sbend(sb) < bindex
|| !stosi(sb)->si_branch[0 + bindex]);
return stosi(sb)->si_branch[0 + bindex];
}
static int make_xino(struct seq_file *seq, struct sysaufs_args *args,
int *do_size)
{
int err;
struct super_block *sb = args->sb;
aufs_bindex_t bindex, bend;
struct file *xf;
struct inode *xi;
TraceEnter();
AuDebugOn(args->index != SysaufsSb_XINO);
SiMustReadLock(sb);
*do_size = 0;
err = seq_printf(seq, "%lu %lu\n", (unsigned long)sizeof(struct xino),
(unsigned long)atomic_long_read(&stosi(sb)->si_xino));
bend = sbend(sb);
for (bindex = 0; !err && bindex <= bend; bindex++) {
xf = stobr(sb, bindex)->br_xino;
xi = xf->f_dentry->d_inode;
err = seq_printf(seq, "%d: %d, %Lux%d %Ld\n",
bindex, file_count(xf),
(u64)xi->i_blocks, 1 << xi->i_blkbits,
i_size_read(xi));
}
return err;
}
int au_sigen_inc(struct super_block *sb)
{
int gen;
SiMustWriteLock(sb);
gen = ++stosi(sb)->si_generation;
au_update_digen(sb->s_root);
au_update_iigen(sb->s_root->d_inode);
sb->s_root->d_inode->i_version++;
return gen;
}
aufs_bindex_t new_br_id(struct super_block *sb)
{
aufs_bindex_t br_id;
TraceEnter();
SiMustWriteLock(sb);
while (1) {
br_id = ++stosi(sb)->si_last_br_id;
if (br_id && find_brindex(sb, br_id) < 0)
return br_id;
}
}
static int renwh_and_rmdir(struct dentry *dentry, aufs_bindex_t bindex,
struct aufs_nhash *whlist, struct inode *dir)
{
int rmdir_later, err;
struct dentry *hidden_dentry;
LKTRTrace("%.*s, b%d\n", DLNPair(dentry), bindex);
err = rename_whtmp(dentry, bindex);
//err = -1;
//todo: bug
if (unlikely(err)) {
au_direval_inc(dentry->d_parent);
return err;
}
hidden_dentry = au_h_dptr_i(dentry, bindex);
if (!au_is_nfs(hidden_dentry->d_sb)) {
const int dirwh = stosi(dentry->d_sb)->si_dirwh;
rmdir_later = (dirwh <= 1);
if (!rmdir_later)
rmdir_later = is_longer_wh(whlist, bindex, dirwh);
if (rmdir_later)
return rmdir_later;
}
err = rmdir_whtmp(hidden_dentry, whlist, bindex, dir, dentry->d_inode);
//err = -1;
if (unlikely(err)) {
IOErr("rmdir %.*s, b%d failed, %d. ignored\n",
DLNPair(hidden_dentry), bindex, err);
err = 0;
}
TraceErr(err);
return err;
}
int au_sigen(struct super_block *sb)
{
SiMustAnyLock(sb);
return stosi(sb)->si_generation;
}
aufs_bindex_t sbend(struct super_block *sb)
{
SiMustAnyLock(sb);
return stosi(sb)->si_bend;
}
