static int do_pri_inode(aufs_bindex_t bindex, struct inode *inode, int hn,
struct dentry *wh)
{
char *n = NULL;
int l = 0;
if (!inode || IS_ERR(inode)) {
dpri("i%d: err %ld\n", bindex, PTR_ERR(inode));
return -1;
}
/* the type of i_blocks depends upon CONFIG_LBDAF */
BUILD_BUG_ON(sizeof(inode->i_blocks) != sizeof(unsigned long)
&& sizeof(inode->i_blocks) != sizeof(u64));
if (wh) {
n = (void *)wh->d_name.name;
l = wh->d_name.len;
}
dpri("i%d: %p, i%lu, %s, cnt %d, nl %u, 0%o, sz %llu, blk %llu,"
" hn %d, ct %lld, np %lu, st 0x%lx, f 0x%x, v %llu, g %x%s%.*s\n",
bindex, inode,
inode->i_ino, inode->i_sb ? au_sbtype(inode->i_sb) : "??",
atomic_read(&inode->i_count), inode->i_nlink, inode->i_mode,
i_size_read(inode), (unsigned long long)inode->i_blocks,
hn, (long long)timespec_to_ns(&inode->i_ctime) & 0x0ffff,
inode->i_mapping ? inode->i_mapping->nrpages : 0,
inode->i_state, inode->i_flags, inode->i_version,
inode->i_generation,
l ? ", wh " : "", l, n);
return 0;
}
static int do_pri_dentry(aufs_bindex_t bindex, struct dentry *dentry)
{
struct dentry *wh = NULL;
int hn;
if (!dentry || IS_ERR(dentry)) {
dpri("d%d: err %ld\n", bindex, PTR_ERR(dentry));
return -1;
}
/* do not call dget_parent() here */
/* note: access d_xxx without d_lock */
dpri("d%d: %.*s?/%.*s, %s, cnt %d, flags 0x%x\n",
bindex,
AuDLNPair(dentry->d_parent), AuDLNPair(dentry),
dentry->d_sb ? au_sbtype(dentry->d_sb) : "??",
d_count(dentry), dentry->d_flags);
hn = -1;
if (bindex >= 0 && dentry->d_inode && au_test_aufs(dentry->d_sb)) {
struct au_iinfo *iinfo = au_ii(dentry->d_inode);
if (iinfo) {
hn = !!au_hn(iinfo->ii_hinode + bindex);
wh = iinfo->ii_hinode[0 + bindex].hi_whdentry;
}
}
do_pri_inode(bindex, dentry->d_inode, hn, wh);
return 0;
}
static int do_pri_br(aufs_bindex_t bindex, struct au_branch *br)
{
struct vfsmount *mnt;
struct super_block *sb;
if (!br || IS_ERR(br))
goto out;
mnt = au_br_mnt(br);
if (!mnt || IS_ERR(mnt))
goto out;
sb = mnt->mnt_sb;
if (!sb || IS_ERR(sb))
goto out;
dpri("s%d: {perm 0x%x, id %d, cnt %d, wbr %p}, "
"%s, dev 0x%02x%02x, flags 0x%lx, cnt %d, active %d, "
"xino %d\n",
bindex, br->br_perm, br->br_id, atomic_read(&br->br_count),
br->br_wbr, au_sbtype(sb), MAJOR(sb->s_dev), MINOR(sb->s_dev),
sb->s_flags, sb->s_count,
atomic_read(&sb->s_active), !!br->br_xino.xi_file);
return 0;
out:
dpri("s%d: err %ld\n", bindex, PTR_ERR(br));
return -1;
}
void au_dbg_iattr(struct iattr *ia)
{
#define AuBit(name) \
do { \
if (ia->ia_valid & ATTR_ ## name) \
dpri(#name "\n"); \
} while (0)
AuBit(MODE);
AuBit(UID);
AuBit(GID);
AuBit(SIZE);
AuBit(ATIME);
AuBit(MTIME);
AuBit(CTIME);
AuBit(ATIME_SET);
AuBit(MTIME_SET);
AuBit(FORCE);
AuBit(ATTR_FLAG);
AuBit(KILL_SUID);
AuBit(KILL_SGID);
AuBit(FILE);
AuBit(KILL_PRIV);
AuBit(OPEN);
AuBit(TIMES_SET);
#undef AuBit
dpri("ia_file %p\n", ia->ia_file);
}
void dpri(int64 u)
{
ff(debug,"Node %d:\n",u);
int64 son = 0;
TRA(x,u)
ff(debug,"SON%d: %d\n",++son,lk[x].v);
TRA(x,u)
dpri(lk[x].v);
}
void au_dpri_vdir(struct au_vdir *vdir)
{
unsigned long ul;
union au_vdir_deblk_p p;
unsigned char *o;
if (!vdir || IS_ERR(vdir)) {
dpri("err %ld\n", PTR_ERR(vdir));
return;
}
dpri("deblk %u, nblk %lu, deblk %p, last{%lu, %p}, ver %lu\n",
vdir->vd_deblk_sz, vdir->vd_nblk, vdir->vd_deblk,
vdir->vd_last.ul, vdir->vd_last.p.deblk, vdir->vd_version);
for (ul = 0; ul < vdir->vd_nblk; ul++) {
p.deblk = vdir->vd_deblk[ul];
o = p.deblk;
dpri("[%lu]: %p\n", ul, o);
}
}
void au_dpri_sb(struct super_block *sb)
{
struct au_sbinfo *sbinfo;
aufs_bindex_t bindex;
int err;
/* to reuduce stack size */
struct {
struct vfsmount mnt;
struct au_branch fake;
} *a;
/* this function can be called from magic sysrq */
a = kzalloc(sizeof(*a), GFP_ATOMIC);
if (unlikely(!a)) {
dpri("no memory\n");
return;
}
a->mnt.mnt_sb = sb;
a->fake.br_perm = 0;
a->fake.br_path.mnt = &a->mnt;
a->fake.br_xino.xi_file = NULL;
atomic_set(&a->fake.br_count, 0);
smp_mb(); /* atomic_set */
err = do_pri_br(-1, &a->fake);
kfree(a);
dpri("dev 0x%x\n", sb->s_dev);
if (err || !au_test_aufs(sb))
return;
sbinfo = au_sbi(sb);
if (!sbinfo)
return;
dpri("nw %d, gen %u, kobj %d\n",
atomic_read(&sbinfo->si_nowait.nw_len), sbinfo->si_generation,
atomic_read(&sbinfo->si_kobj.kref.refcount));
for (bindex = 0; bindex <= sbinfo->si_bend; bindex++)
do_pri_br(bindex, sbinfo->si_branch[0 + bindex]);
}
static int do_pri_file(aufs_bindex_t bindex, struct file *file)
{
char a[32];
if (!file || IS_ERR(file)) {
dpri("f%d: err %ld\n", bindex, PTR_ERR(file));
return -1;
}
a[0] = 0;
if (bindex < 0
&& file->f_dentry
&& au_test_aufs(file->f_dentry->d_sb)
&& au_fi(file))
snprintf(a, sizeof(a), ", gen %d, mmapped %d",
au_figen(file), atomic_read(&au_fi(file)->fi_mmapped));
dpri("f%d: mode 0x%x, flags 0%o, cnt %ld, v %llu, pos %llu%s\n",
bindex, file->f_mode, file->f_flags, (long)file_count(file),
file->f_version, file->f_pos, a);
if (file->f_dentry)
do_pri_dentry(bindex, file->f_dentry);
return 0;
}
static int do_pri_dentry(aufs_bindex_t bindex, struct dentry *dentry)
{
struct dentry *wh = NULL;
if (!dentry || IS_ERR(dentry)) {
dpri("d%d: err %ld\n", bindex, PTR_ERR(dentry));
return -1;
}
/* do not call dget_parent() here */
dpri("d%d: %.*s?/%.*s, %s, cnt %d, flags 0x%x\n",
bindex,
AuDLNPair(dentry->d_parent), AuDLNPair(dentry),
dentry->d_sb ? au_sbtype(dentry->d_sb) : "??",
atomic_read(&dentry->d_count), dentry->d_flags);
if (bindex >= 0 && dentry->d_inode && au_test_aufs(dentry->d_sb)) {
struct au_iinfo *iinfo = au_ii(dentry->d_inode);
if (iinfo)
wh = iinfo->ii_hinode[0 + bindex].hi_whdentry;
}
do_pri_inode(bindex, dentry->d_inode, wh);
return 0;
}
void au_dpri_whlist(struct au_nhash *whlist)
{
unsigned long ul, n;
struct hlist_head *head;
struct au_vdir_wh *pos;
n = whlist->nh_num;
head = whlist->nh_head;
for (ul = 0; ul < n; ul++) {
hlist_for_each_entry(pos, head, wh_hash)
dpri("b%d, %.*s, %d\n",
pos->wh_bindex,
pos->wh_str.len, pos->wh_str.name,
pos->wh_str.len);
head++;
}
}
void au_dpri_inode(struct inode *inode)
{
struct au_iinfo *iinfo;
aufs_bindex_t bindex;
int err;
err = do_pri_inode(-1, inode, NULL);
if (err || !au_test_aufs(inode->i_sb))
return;
iinfo = au_ii(inode);
if (!iinfo)
return;
dpri("i-1: bstart %d, bend %d, gen %d\n",
iinfo->ii_bstart, iinfo->ii_bend, au_iigen(inode));
if (iinfo->ii_bstart < 0)
return;
for (bindex = iinfo->ii_bstart; bindex <= iinfo->ii_bend; bindex++)
do_pri_inode(bindex, iinfo->ii_hinode[0 + bindex].hi_inode,
iinfo->ii_hinode[0 + bindex].hi_whdentry);
}
void au_dpri_dentry(struct dentry *dentry)
{
struct au_dinfo *dinfo;
aufs_bindex_t bindex;
int err;
err = do_pri_dentry(-1, dentry);
if (err || !au_test_aufs(dentry->d_sb))
return;
dinfo = au_di(dentry);
if (!dinfo)
return;
dpri("d-1: bstart %d, bend %d, bwh %d, bdiropq %d, gen %d\n",
dinfo->di_bstart, dinfo->di_bend,
dinfo->di_bwh, dinfo->di_bdiropq, au_digen(dentry));
if (dinfo->di_bstart < 0)
return;
for (bindex = dinfo->di_bstart; bindex <= dinfo->di_bend; bindex++)
do_pri_dentry(bindex, dinfo->di_hdentry[0 + bindex].hd_dentry);
}