1 files changed, 8 insertions, 349 deletions

diff --git a/ubifs-utils/libubifs/orphan.c b/ubifs-utils/libubifs/orphan.c
index fb957d9..2f31874 100644
--- a/ubifs-utils/libubifs/orphan.c
+++ b/ubifs-utils/libubifs/orphan.c
@@ -7,7 +7,14 @@
  * Author: Adrian Hunter
  */
 
+#include "linux_err.h"
+#include "bitops.h"
+#include "kmem.h"
 #include "ubifs.h"
+#include "defs.h"
+#include "debug.h"
+#include "key.h"
+#include "misc.h"
 
 /*
  * An orphan is an inode number whose inode node has been committed to the index
@@ -43,137 +50,6 @@
 static int dbg_check_orphans(struct ubifs_info *c);
 
 /**
- * ubifs_add_orphan - add an orphan.
- * @c: UBIFS file-system description object
- * @inum: orphan inode number
- *
- * Add an orphan. This function is called when an inodes link count drops to
- * zero.
- */
-int ubifs_add_orphan(struct ubifs_info *c, ino_t inum)
-{
-	struct ubifs_orphan *orphan, *o;
-	struct rb_node **p, *parent = NULL;
-
-	orphan = kzalloc(sizeof(struct ubifs_orphan), GFP_NOFS);
-	if (!orphan)
-		return -ENOMEM;
-	orphan->inum = inum;
-	orphan->new = 1;
-
-	spin_lock(&c->orphan_lock);
-	if (c->tot_orphans >= c->max_orphans) {
-		spin_unlock(&c->orphan_lock);
-		kfree(orphan);
-		return -ENFILE;
-	}
-	p = &c->orph_tree.rb_node;
-	while (*p) {
-		parent = *p;
-		o = rb_entry(parent, struct ubifs_orphan, rb);
-		if (inum < o->inum)
-			p = &(*p)->rb_left;
-		else if (inum > o->inum)
-			p = &(*p)->rb_right;
-		else {
-			ubifs_err(c, "orphaned twice");
-			spin_unlock(&c->orphan_lock);
-			kfree(orphan);
-			return -EINVAL;
-		}
-	}
-	c->tot_orphans += 1;
-	c->new_orphans += 1;
-	rb_link_node(&orphan->rb, parent, p);
-	rb_insert_color(&orphan->rb, &c->orph_tree);
-	list_add_tail(&orphan->list, &c->orph_list);
-	list_add_tail(&orphan->new_list, &c->orph_new);
-
-	spin_unlock(&c->orphan_lock);
-	dbg_gen("ino %lu", (unsigned long)inum);
-	return 0;
-}
-
-static struct ubifs_orphan *lookup_orphan(struct ubifs_info *c, ino_t inum)
-{
-	struct ubifs_orphan *o;
-	struct rb_node *p;
-
-	p = c->orph_tree.rb_node;
-	while (p) {
-		o = rb_entry(p, struct ubifs_orphan, rb);
-		if (inum < o->inum)
-			p = p->rb_left;
-		else if (inum > o->inum)
-			p = p->rb_right;
-		else {
-			return o;
-		}
-	}
-	return NULL;
-}
-
-static void __orphan_drop(struct ubifs_info *c, struct ubifs_orphan *o)
-{
-	rb_erase(&o->rb, &c->orph_tree);
-	list_del(&o->list);
-	c->tot_orphans -= 1;
-
-	if (o->new) {
-		list_del(&o->new_list);
-		c->new_orphans -= 1;
-	}
-
-	kfree(o);
-}
-
-static void orphan_delete(struct ubifs_info *c, struct ubifs_orphan *orph)
-{
-	if (orph->del) {
-		dbg_gen("deleted twice ino %lu", (unsigned long)orph->inum);
-		return;
-	}
-
-	if (orph->cmt) {
-		orph->del = 1;
-		rb_erase(&orph->rb, &c->orph_tree);
-		orph->dnext = c->orph_dnext;
-		c->orph_dnext = orph;
-		dbg_gen("delete later ino %lu", (unsigned long)orph->inum);
-		return;
-	}
-
-	__orphan_drop(c, orph);
-}
-
-/**
- * ubifs_delete_orphan - delete an orphan.
- * @c: UBIFS file-system description object
- * @inum: orphan inode number
- *
- * Delete an orphan. This function is called when an inode is deleted.
- */
-void ubifs_delete_orphan(struct ubifs_info *c, ino_t inum)
-{
-	struct ubifs_orphan *orph;
-
-	spin_lock(&c->orphan_lock);
-
-	orph = lookup_orphan(c, inum);
-	if (!orph) {
-		spin_unlock(&c->orphan_lock);
-		ubifs_err(c, "missing orphan ino %lu", (unsigned long)inum);
-		dump_stack();
-
-		return;
-	}
-
-	orphan_delete(c, orph);
-
-	spin_unlock(&c->orphan_lock);
-}
-
-/**
  * ubifs_orphan_start_commit - start commit of orphans.
  * @c: UBIFS file-system description object
  *
@@ -724,224 +600,7 @@ int ubifs_mount_orphans(struct ubifs_info *c, int unclean, int read_only)
 	return err;
 }
 
-/*
- * Everything below is related to debugging.
- */
-
-struct check_orphan {
-	struct rb_node rb;
-	ino_t inum;
-};
-
-struct check_info {
-	unsigned long last_ino;
-	unsigned long tot_inos;
-	unsigned long missing;
-	unsigned long long leaf_cnt;
-	struct ubifs_ino_node *node;
-	struct rb_root root;
-};
-
-static bool dbg_find_orphan(struct ubifs_info *c, ino_t inum)
-{
-	bool found = false;
-
-	spin_lock(&c->orphan_lock);
-	found = !!lookup_orphan(c, inum);
-	spin_unlock(&c->orphan_lock);
-
-	return found;
-}
-
-static int dbg_ins_check_orphan(struct rb_root *root, ino_t inum)
-{
-	struct check_orphan *orphan, *o;
-	struct rb_node **p, *parent = NULL;
-
-	orphan = kzalloc(sizeof(struct check_orphan), GFP_NOFS);
-	if (!orphan)
-		return -ENOMEM;
-	orphan->inum = inum;
-
-	p = &root->rb_node;
-	while (*p) {
-		parent = *p;
-		o = rb_entry(parent, struct check_orphan, rb);
-		if (inum < o->inum)
-			p = &(*p)->rb_left;
-		else if (inum > o->inum)
-			p = &(*p)->rb_right;
-		else {
-			kfree(orphan);
-			return 0;
-		}
-	}
-	rb_link_node(&orphan->rb, parent, p);
-	rb_insert_color(&orphan->rb, root);
-	return 0;
-}
-
-static int dbg_find_check_orphan(struct rb_root *root, ino_t inum)
-{
-	struct check_orphan *o;
-	struct rb_node *p;
-
-	p = root->rb_node;
-	while (p) {
-		o = rb_entry(p, struct check_orphan, rb);
-		if (inum < o->inum)
-			p = p->rb_left;
-		else if (inum > o->inum)
-			p = p->rb_right;
-		else
-			return 1;
-	}
-	return 0;
-}
-
-static void dbg_free_check_tree(struct rb_root *root)
-{
-	struct check_orphan *o, *n;
-
-	rbtree_postorder_for_each_entry_safe(o, n, root, rb)
-		kfree(o);
-}
-
-static int dbg_orphan_check(struct ubifs_info *c, struct ubifs_zbranch *zbr,
-			    void *priv)
+static int dbg_check_orphans(__unused struct ubifs_info *c)
 {
-	struct check_info *ci = priv;
-	ino_t inum;
-	int err;
-
-	inum = key_inum(c, &zbr->key);
-	if (inum != ci->last_ino) {
-		/*
-		 * Lowest node type is the inode node or xattr entry(when
-		 * selinux/encryption is enabled), so it comes first
-		 */
-		if (key_type(c, &zbr->key) != UBIFS_INO_KEY &&
-		    key_type(c, &zbr->key) != UBIFS_XENT_KEY)
-			ubifs_err(c, "found orphan node ino %lu, type %d",
-				  (unsigned long)inum, key_type(c, &zbr->key));
-		ci->last_ino = inum;
-		ci->tot_inos += 1;
-		err = ubifs_tnc_read_node(c, zbr, ci->node);
-		if (err) {
-			ubifs_err(c, "node read failed, error %d", err);
-			return err;
-		}
-		if (ci->node->nlink == 0)
-			/* Must be recorded as an orphan */
-			if (!dbg_find_check_orphan(&ci->root, inum) &&
-			    !dbg_find_orphan(c, inum)) {
-				ubifs_err(c, "missing orphan, ino %lu",
-					  (unsigned long)inum);
-				ci->missing += 1;
-			}
-	}
-	ci->leaf_cnt += 1;
 	return 0;
 }
-
-static int dbg_read_orphans(struct check_info *ci, struct ubifs_scan_leb *sleb)
-{
-	struct ubifs_scan_node *snod;
-	struct ubifs_orph_node *orph;
-	ino_t inum;
-	int i, n, err;
-
-	list_for_each_entry(snod, &sleb->nodes, list) {
-		cond_resched();
-		if (snod->type != UBIFS_ORPH_NODE)
-			continue;
-		orph = snod->node;
-		n = (le32_to_cpu(orph->ch.len) - UBIFS_ORPH_NODE_SZ) >> 3;
-		for (i = 0; i < n; i++) {
-			inum = le64_to_cpu(orph->inos[i]);
-			err = dbg_ins_check_orphan(&ci->root, inum);
-			if (err)
-				return err;
-		}
-	}
-	return 0;
-}
-
-static int dbg_scan_orphans(struct ubifs_info *c, struct check_info *ci)
-{
-	int lnum, err = 0;
-	void *buf;
-
-	/* Check no-orphans flag and skip this if no orphans */
-	if (c->no_orphs)
-		return 0;
-
-	buf = __vmalloc(c->leb_size, GFP_NOFS);
-	if (!buf) {
-		ubifs_err(c, "cannot allocate memory to check orphans");
-		return 0;
-	}
-
-	for (lnum = c->orph_first; lnum <= c->orph_last; lnum++) {
-		struct ubifs_scan_leb *sleb;
-
-		sleb = ubifs_scan(c, lnum, 0, buf, 0);
-		if (IS_ERR(sleb)) {
-			err = PTR_ERR(sleb);
-			break;
-		}
-
-		err = dbg_read_orphans(ci, sleb);
-		ubifs_scan_destroy(sleb);
-		if (err)
-			break;
-	}
-
-	vfree(buf);
-	return err;
-}
-
-static int dbg_check_orphans(struct ubifs_info *c)
-{
-	struct check_info ci;
-	int err;
-
-	if (!dbg_is_chk_orph(c))
-		return 0;
-
-	ci.last_ino = 0;
-	ci.tot_inos = 0;
-	ci.missing  = 0;
-	ci.leaf_cnt = 0;
-	ci.root = RB_ROOT;
-	ci.node = kmalloc(UBIFS_MAX_INO_NODE_SZ, GFP_NOFS);
-	if (!ci.node) {
-		ubifs_err(c, "out of memory");
-		return -ENOMEM;
-	}
-
-	err = dbg_scan_orphans(c, &ci);
-	if (err)
-		goto out;
-
-	err = dbg_walk_index(c, &dbg_orphan_check, NULL, &ci);
-	if (err) {
-		ubifs_err(c, "cannot scan TNC, error %d", err);
-		goto out;
-	}
-
-	if (ci.missing) {
-		ubifs_err(c, "%lu missing orphan(s)", ci.missing);
-		err = -EINVAL;
-		goto out;
-	}
-
-	dbg_cmt("last inode number is %lu", ci.last_ino);
-	dbg_cmt("total number of inodes is %lu", ci.tot_inos);
-	dbg_cmt("total number of leaf nodes is %llu", ci.leaf_cnt);
-
-out:
-	dbg_free_check_tree(&ci.root);
-	kfree(ci.node);
-	return err;
-}