/*
* the lifetime of branch is independent from the entry under sysfs.
* sysfs handles the lifetime of the entry, and never call ->show() after it is
* unlinked.
*/
static int sysaufs_si_br(struct seq_file *seq, struct super_block *sb,
aufs_bindex_t bindex)
{
int err;
struct path path;
struct dentry *root;
struct au_branch *br;
char *perm;
AuDbg("b%d\n", bindex);
err = 0;
root = sb->s_root;
di_read_lock_parent(root, !AuLock_IR);
br = au_sbr(sb, bindex);
path.mnt = br->br_mnt;
path.dentry = au_h_dptr(root, bindex);
au_seq_path(seq, &path);
di_read_unlock(root, !AuLock_IR);
perm = au_optstr_br_perm(br->br_perm);
if (perm) {
err = seq_printf(seq, "=%s\n", perm);
kfree(perm);
if (err == -1)
err = -E2BIG;
} else
err = -ENOMEM;
return err;
}
/*
* the lifetime of branch is independent from the entry under sysfs.
* sysfs handles the lifetime of the entry, and never call ->show() after it is
* unlinked.
*/
static int sysaufs_si_br(struct seq_file *seq, struct super_block *sb,
aufs_bindex_t bindex)
{
struct path path;
struct dentry *root;
struct au_branch *br;
AuDbg("b%d\n", bindex);
root = sb->s_root;
di_read_lock_parent(root, !AuLock_IR);
br = au_sbr(sb, bindex);
path.mnt = br->br_mnt;
path.dentry = au_h_dptr(root, bindex);
au_seq_path(seq, &path);
di_read_unlock(root, !AuLock_IR);
seq_printf(seq, "=%s\n", au_optstr_br_perm(br->br_perm));
return 0;
}
/*
* the lifetime of branch is independent from the entry under sysfs.
* sysfs handles the lifetime of the entry, and never call ->show() after it is
* unlinked.
*/
static int sysaufs_si_br(struct seq_file *seq, struct super_block *sb,
aufs_bindex_t bindex, int idx)
{
int err;
struct path path;
struct dentry *root;
struct au_branch *br;
au_br_perm_str_t perm;
AuDbg("b%d\n", bindex);
err = 0;
root = sb->s_root;
di_read_lock_parent(root, !AuLock_IR);
br = au_sbr(sb, bindex);
switch (idx) {
case AuBrSysfs_BR:
path.mnt = au_br_mnt(br);
path.dentry = au_h_dptr(root, bindex);
err = au_seq_path(seq, &path);
if (!err) {
au_optstr_br_perm(&perm, br->br_perm);
err = seq_printf(seq, "=%s\n", perm.a);
}
break;
case AuBrSysfs_BRID:
err = seq_printf(seq, "%d\n", br->br_id);
break;
}
di_read_unlock(root, !AuLock_IR);
if (err == -1)
err = -E2BIG;
return err;
}