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Date: Thu, 27 Mar 2008 16:55:45 +0200
From: Artem Bityutskiy <Artem.Bityutskiy@...ia.com>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Adrian Hunter <ext-adrian.hunter@...ia.com>,
Artem Bityutskiy <Artem.Bityutskiy@...ia.com>
Subject: [RFC PATCH 25/26] UBIFS: add debugging stuff
The UBIFS code is large, and we have a plenty of debugging stuff
in there which helps to catch bugs. Some of the debugging stuff
will be deleted later.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@...ia.com>
Signed-off-by: Adrian Hunter <ext-adrian.hunter@...ia.com>
---
fs/ubifs/debug.c | 1125 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
fs/ubifs/debug.h | 343 +++++++++++++++++
2 files changed, 1468 insertions(+), 0 deletions(-)
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
new file mode 100644
index 0000000..5ccb5a4
--- /dev/null
+++ b/fs/ubifs/debug.c
@@ -0,0 +1,1125 @@
+/*
+ * This file is part of UBIFS.
+ *
+ * Copyright (C) 2006-2008 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Authors: Artem Bityutskiy (Битюцкий Артём)
+ * Adrian Hunter
+ */
+
+/*
+ * This file implements most of the debugging stuff which is compiled in only
+ * when it is enabled. But some debugging check functions are implemented in
+ * corresponding subsystem, just because they are closely related and utilize
+ * various local functions of those subsystems.
+ */
+
+#define UBIFS_DBG_PRESERVE_KMALLOC
+#define UBIFS_DBG_PRESERVE_UBI
+
+#include "ubifs.h"
+
+#ifdef CONFIG_UBIFS_FS_DEBUG
+
+DEFINE_SPINLOCK(dbg_lock);
+
+static char dbg_get_key_dump_dump_buf[100];
+
+static size_t km_alloc_cnt;
+static size_t vm_alloc_cnt;
+
+static const char *get_key_fmt(int fmt)
+{
+ switch (fmt) {
+ case UBIFS_SIMPLE_KEY_FMT:
+ return "simple";
+ default:
+ return "unknown/invalid format";
+ }
+}
+
+static const char *get_key_hash(int hash)
+{
+ switch (hash) {
+ case UBIFS_KEY_HASH_R5:
+ return "R5";
+ case UBIFS_KEY_HASH_TEST:
+ return "test";
+ default:
+ return "unknown/invalid name hash";
+ }
+}
+
+static const char *get_key_type(int type)
+{
+ switch (type) {
+ case UBIFS_INO_KEY:
+ return "inode";
+ case UBIFS_DENT_KEY:
+ return "direntry";
+ case UBIFS_XENT_KEY:
+ return "xentry";
+ case UBIFS_DATA_KEY:
+ return "data";
+ case UBIFS_TRUN_KEY:
+ return "truncate";
+ default:
+ return "unknown/invalid key";
+ }
+}
+
+const char *dbg_get_key_dump(const struct ubifs_info *c,
+ const union ubifs_key *key)
+{
+ char *p = &dbg_get_key_dump_dump_buf[0];
+ int type = key_type(c, key);
+
+ if (c->key_fmt == UBIFS_SIMPLE_KEY_FMT) {
+ switch (type) {
+ case UBIFS_INO_KEY:
+ sprintf(p, "(%lu, %s)", key_ino(c, key),
+ get_key_type(type));
+ break;
+ case UBIFS_DENT_KEY:
+ case UBIFS_XENT_KEY:
+ sprintf(p, "(%lu, %s, %#08x)", key_ino(c, key),
+ get_key_type(type), key_hash(c, key));
+ break;
+ case UBIFS_DATA_KEY:
+ sprintf(p, "(%lu, %s, %u)", key_ino(c, key),
+ get_key_type(type), key_block(c, key));
+ break;
+ case UBIFS_TRUN_KEY:
+ sprintf(p, "(%lu, %s)",
+ key_ino(c, key), get_key_type(type));
+ break;
+ default:
+ sprintf(p, "(bad key type: %#08x, %#08x)",
+ key->u32[0], key->u32[1]);
+ }
+ } else
+ sprintf(p, "bad key format %d", c->key_fmt);
+
+ return p;
+}
+
+const char *dbg_ntype(int type)
+{
+ switch (type) {
+ case UBIFS_PAD_NODE:
+ return "padding node";
+ case UBIFS_SB_NODE:
+ return "superblock node";
+ case UBIFS_MST_NODE:
+ return "master node";
+ case UBIFS_REF_NODE:
+ return "reference node";
+ case UBIFS_INO_NODE:
+ return "inode node";
+ case UBIFS_DENT_NODE:
+ return "direntry node";
+ case UBIFS_XENT_NODE:
+ return "xentry node";
+ case UBIFS_DATA_NODE:
+ return "data node";
+ case UBIFS_TRUN_NODE:
+ return "truncate node";
+ case UBIFS_IDX_NODE:
+ return "indexing node";
+ case UBIFS_CS_NODE:
+ return "commit start node";
+ case UBIFS_ORPH_NODE:
+ return "orphan node";
+ default:
+ return "unknown node";
+ }
+}
+
+static const char *dbg_gtype(int type)
+{
+ switch (type) {
+ case UBIFS_NO_NODE_GROUP:
+ return "no node group";
+ case UBIFS_IN_NODE_GROUP:
+ return "in node group";
+ case UBIFS_LAST_OF_NODE_GROUP:
+ return "last of node group";
+ default:
+ return "unknown";
+ }
+}
+
+const char *dbg_cstate(int cmt_state)
+{
+ switch (cmt_state) {
+ case COMMIT_RESTING:
+ return "commit resting";
+ case COMMIT_BACKGROUND:
+ return "background commit requested";
+ case COMMIT_REQUIRED:
+ return "commit required";
+ case COMMIT_RUNNING_BACKGROUND:
+ return "BACKGROUND commit running";
+ case COMMIT_RUNNING_REQUIRED:
+ return "commit running and required";
+ case COMMIT_BROKEN:
+ return "broken commit";
+ default:
+ return "unknown commit state";
+ }
+}
+
+static void dump_ch(const struct ubifs_ch *ch)
+{
+ printk(KERN_DEBUG "\tmagic %#x\n", le32_to_cpu(ch->magic));
+ printk(KERN_DEBUG "\tcrc %#x\n", le32_to_cpu(ch->crc));
+ printk(KERN_DEBUG "\tnode_type %d (%s)\n", ch->node_type,
+ dbg_ntype(ch->node_type));
+ printk(KERN_DEBUG "\tgroup_type %d (%s)\n", ch->group_type,
+ dbg_gtype(ch->group_type));
+ printk(KERN_DEBUG "\tsqnum %llu\n", le64_to_cpu(ch->sqnum));
+ printk(KERN_DEBUG "\tlen %u\n", le32_to_cpu(ch->len));
+}
+
+void dbg_dump_node(const struct ubifs_info *c, const void *node)
+{
+ int i, n;
+ union ubifs_key key;
+ const struct ubifs_ch *ch = node;
+
+ if (dbg_failure_mode)
+ return;
+
+ /* If the magic is incorrect, just hexdump the first bytes */
+ if (le32_to_cpu(ch->magic) != UBIFS_NODE_MAGIC) {
+ printk(KERN_DEBUG "Not a node, first %zu bytes:", UBIFS_CH_SZ);
+ print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
+ (void *)node, UBIFS_CH_SZ, 1);
+ return;
+ }
+
+ spin_lock(&dbg_lock);
+ dump_ch(node);
+
+ switch (ch->node_type) {
+ case UBIFS_PAD_NODE:
+ {
+ const struct ubifs_pad_node *pad = node;
+
+ printk(KERN_DEBUG "\tpad_len %u\n",
+ le32_to_cpu(pad->pad_len));
+ break;
+ }
+ case UBIFS_SB_NODE:
+ {
+ const struct ubifs_sb_node *sup = node;
+ unsigned int sup_flags = le32_to_cpu(sup->flags);
+
+ printk(KERN_DEBUG "\tkey_hash %d (%s)\n",
+ (int)sup->key_hash, get_key_hash(sup->key_hash));
+ printk(KERN_DEBUG "\tkey_fmt %d (%s)\n",
+ (int)sup->key_fmt, get_key_fmt(sup->key_fmt));
+ printk(KERN_DEBUG "\tflags %#x\n", sup_flags);
+ printk(KERN_DEBUG "\t\tbig_lpt %u\n",
+ !!(sup_flags & UBIFS_FLG_BIGLPT));
+ printk(KERN_DEBUG "\tmin_io_size %u\n",
+ le32_to_cpu(sup->min_io_size));
+ printk(KERN_DEBUG "\tleb_size %u\n",
+ le32_to_cpu(sup->leb_size));
+ printk(KERN_DEBUG "\tleb_cnt %u\n",
+ le32_to_cpu(sup->leb_cnt));
+ printk(KERN_DEBUG "\tmax_leb_cnt %u\n",
+ le32_to_cpu(sup->max_leb_cnt));
+ printk(KERN_DEBUG "\tmax_bud_bytes %llu\n",
+ le64_to_cpu(sup->max_bud_bytes));
+ printk(KERN_DEBUG "\tlog_lebs %u\n",
+ le32_to_cpu(sup->log_lebs));
+ printk(KERN_DEBUG "\tlpt_lebs %u\n",
+ le32_to_cpu(sup->lpt_lebs));
+ printk(KERN_DEBUG "\torph_lebs %u\n",
+ le32_to_cpu(sup->orph_lebs));
+ printk(KERN_DEBUG "\tjhead_cnt %u\n",
+ le32_to_cpu(sup->jhead_cnt));
+ printk(KERN_DEBUG "\tfanout %u\n",
+ le32_to_cpu(sup->fanout));
+ printk(KERN_DEBUG "\tlsave_cnt %u\n",
+ le32_to_cpu(sup->lsave_cnt));
+ printk(KERN_DEBUG "\tdefault_compr %u\n",
+ (int)le16_to_cpu(sup->default_compr));
+ printk(KERN_DEBUG "\trp_size %llu\n",
+ le64_to_cpu(sup->rp_size));
+ printk(KERN_DEBUG "\trp_uid %u\n",
+ le32_to_cpu(sup->rp_uid));
+ printk(KERN_DEBUG "\trp_gid %u\n",
+ le32_to_cpu(sup->rp_gid));
+ break;
+ }
+ case UBIFS_MST_NODE:
+ {
+ const struct ubifs_mst_node *mst = node;
+
+ printk(KERN_DEBUG "\thighest_inum %llu\n",
+ le64_to_cpu(mst->highest_inum));
+ printk(KERN_DEBUG "\tcommit number %llu\n",
+ le64_to_cpu(mst->cmt_no));
+ printk(KERN_DEBUG "\tflags %#x\n",
+ le32_to_cpu(mst->flags));
+ printk(KERN_DEBUG "\tlog_lnum %u\n",
+ le32_to_cpu(mst->log_lnum));
+ printk(KERN_DEBUG "\troot_lnum %u\n",
+ le32_to_cpu(mst->root_lnum));
+ printk(KERN_DEBUG "\troot_offs %u\n",
+ le32_to_cpu(mst->root_offs));
+ printk(KERN_DEBUG "\troot_len %u\n",
+ le32_to_cpu(mst->root_len));
+ printk(KERN_DEBUG "\tgc_lnum %u\n",
+ le32_to_cpu(mst->gc_lnum));
+ printk(KERN_DEBUG "\tihead_lnum %u\n",
+ le32_to_cpu(mst->ihead_lnum));
+ printk(KERN_DEBUG "\tihead_offs %u\n",
+ le32_to_cpu(mst->ihead_offs));
+ printk(KERN_DEBUG "\tindex_size %u\n",
+ le32_to_cpu(mst->index_size));
+ printk(KERN_DEBUG "\tlpt_lnum %u\n",
+ le32_to_cpu(mst->lpt_lnum));
+ printk(KERN_DEBUG "\tlpt_offs %u\n",
+ le32_to_cpu(mst->lpt_offs));
+ printk(KERN_DEBUG "\tnhead_lnum %u\n",
+ le32_to_cpu(mst->nhead_lnum));
+ printk(KERN_DEBUG "\tnhead_offs %u\n",
+ le32_to_cpu(mst->nhead_offs));
+ printk(KERN_DEBUG "\tltab_lnum %u\n",
+ le32_to_cpu(mst->ltab_lnum));
+ printk(KERN_DEBUG "\tltab_offs %u\n",
+ le32_to_cpu(mst->ltab_offs));
+ printk(KERN_DEBUG "\tlsave_lnum %u\n",
+ le32_to_cpu(mst->lsave_lnum));
+ printk(KERN_DEBUG "\tlsave_offs %u\n",
+ le32_to_cpu(mst->lsave_offs));
+ printk(KERN_DEBUG "\tlscan_lnum %u\n",
+ le32_to_cpu(mst->lscan_lnum));
+ printk(KERN_DEBUG "\tleb_cnt %u\n",
+ le32_to_cpu(mst->leb_cnt));
+ printk(KERN_DEBUG "\tempty_lebs %u\n",
+ le32_to_cpu(mst->empty_lebs));
+ printk(KERN_DEBUG "\tidx_lebs %u\n",
+ le32_to_cpu(mst->idx_lebs));
+ printk(KERN_DEBUG "\ttotal_free %llu\n",
+ le64_to_cpu(mst->total_free));
+ printk(KERN_DEBUG "\ttotal_dirty %llu\n",
+ le64_to_cpu(mst->total_dirty));
+ printk(KERN_DEBUG "\ttotal_used %llu\n",
+ le64_to_cpu(mst->total_used));
+ printk(KERN_DEBUG "\ttotal_dead %llu\n",
+ le64_to_cpu(mst->total_dead));
+ printk(KERN_DEBUG "\ttotal_dark %llu\n",
+ le64_to_cpu(mst->total_dark));
+ break;
+ }
+ case UBIFS_REF_NODE:
+ {
+ const struct ubifs_ref_node *ref = node;
+
+ printk(KERN_DEBUG "\tlnum %u\n",
+ le32_to_cpu(ref->lnum));
+ printk(KERN_DEBUG "\toffs %u\n",
+ le32_to_cpu(ref->offs));
+ printk(KERN_DEBUG "\tjhead %u\n",
+ le32_to_cpu(ref->jhead));
+ break;
+ }
+ case UBIFS_INO_NODE:
+ {
+ const struct ubifs_ino_node *ino = node;
+
+ key_read(c, &ino->key, &key);
+ printk(KERN_DEBUG "\tkey %s\n",
+ dbg_get_key_dump(c, &key));
+ printk(KERN_DEBUG "\tsize %llu\n",
+ le64_to_cpu(ino->size));
+ printk(KERN_DEBUG "\tnlink %u\n",
+ le32_to_cpu(ino->nlink));
+ printk(KERN_DEBUG "\tatime %u\n",
+ le32_to_cpu(ino->atime));
+ printk(KERN_DEBUG "\tctime %u\n",
+ le32_to_cpu(ino->ctime));
+ printk(KERN_DEBUG "\tmtime %u\n",
+ le32_to_cpu(ino->mtime));
+ printk(KERN_DEBUG "\tuid %u\n",
+ le32_to_cpu(ino->uid));
+ printk(KERN_DEBUG "\tgid %u\n",
+ le32_to_cpu(ino->gid));
+ printk(KERN_DEBUG "\tmode %u\n",
+ le32_to_cpu(ino->mode));
+ printk(KERN_DEBUG "\tflags %#x\n",
+ le32_to_cpu(ino->flags));
+ printk(KERN_DEBUG "\txattr_cnt %u\n",
+ le32_to_cpu(ino->xattr_cnt));
+ printk(KERN_DEBUG "\txattr_size %llu\n",
+ le64_to_cpu(ino->xattr_size));
+ printk(KERN_DEBUG "\txattr_msize %llu\n",
+ le64_to_cpu(ino->xattr_msize));
+ printk(KERN_DEBUG "\txattr_names %u\n",
+ le32_to_cpu(ino->xattr_names));
+ printk(KERN_DEBUG "\tcompr_type %#x\n",
+ (int)le16_to_cpu(ino->compr_type));
+ printk(KERN_DEBUG "\tdata len %u\n",
+ le32_to_cpu(ino->data_len));
+ break;
+ }
+ case UBIFS_DENT_NODE:
+ case UBIFS_XENT_NODE:
+ {
+ const struct ubifs_dent_node *dent = node;
+ int nlen = le16_to_cpu(dent->nlen);
+
+ key_read(c, &dent->key, &key);
+ printk(KERN_DEBUG "\tkey %s\n",
+ dbg_get_key_dump(c, &key));
+ printk(KERN_DEBUG "\tinum %llu\n",
+ le64_to_cpu(dent->inum));
+ printk(KERN_DEBUG "\ttype %d\n", (int)dent->type);
+ printk(KERN_DEBUG "\tnlen %d\n", nlen);
+ printk(KERN_DEBUG "\tname ");
+
+ if (nlen > UBIFS_MAX_NLEN) {
+ nlen = UBIFS_MAX_NLEN;
+ printk(KERN_DEBUG "\tWarning! Node is corrupted\n");
+ }
+
+ for (i = 0; i < nlen && dent->name[i]; i++)
+ printk("%c", dent->name[i]);
+ printk("\n");
+
+ break;
+ }
+ case UBIFS_DATA_NODE:
+ {
+ const struct ubifs_data_node *dn = node;
+ int dlen = le32_to_cpu(ch->len) - UBIFS_DATA_NODE_SZ;
+
+ key_read(c, &dn->key, &key);
+ printk(KERN_DEBUG "\tkey %s\n",
+ dbg_get_key_dump(c, &key));
+ printk(KERN_DEBUG "\tsize %u\n",
+ le32_to_cpu(dn->size));
+ printk(KERN_DEBUG "\tcompr_typ %d\n",
+ (int)le16_to_cpu(dn->compr_type));
+ printk(KERN_DEBUG "\tdata size %d\n",
+ dlen);
+ printk(KERN_DEBUG "\tdata:\n");
+ print_hex_dump(KERN_DEBUG, "\t", DUMP_PREFIX_OFFSET, 32, 1,
+ (void *)&dn->data, dlen, 0);
+ break;
+ }
+ case UBIFS_TRUN_NODE:
+ {
+ const struct ubifs_trun_node *trun = node;
+
+ key_read(c, &trun->key, &key);
+ printk(KERN_DEBUG "\tkey %s\n",
+ dbg_get_key_dump(c, &key));
+ printk(KERN_DEBUG "\told_size %llu\n",
+ le64_to_cpu(trun->old_size));
+ printk(KERN_DEBUG "\tnew_size %llu\n",
+ le64_to_cpu(trun->new_size));
+ break;
+ }
+ case UBIFS_IDX_NODE:
+ {
+ const struct ubifs_idx_node *idx = node;
+
+ n = le16_to_cpu(idx->child_cnt);
+ printk(KERN_DEBUG "\tchild_cnt %d\n", n);
+ printk(KERN_DEBUG "\tlevel %d\n",
+ (int)le16_to_cpu(idx->level));
+ printk(KERN_DEBUG "Branches:\n");
+
+ for (i = 0; i < n && i < c->fanout - 1; i++) {
+ const struct ubifs_branch *br;
+
+ br = ubifs_idx_branch(c, idx, i);
+ key_read(c, &br->key, &key);
+ printk(KERN_DEBUG "\t %04d: key %s",
+ i, dbg_get_key_dump(c, &key));
+ printk(KERN_DEBUG "\t lnum %6d, offs %6d, "
+ "len %6d\n", le32_to_cpu(br->lnum),
+ le32_to_cpu(br->offs), le32_to_cpu(br->len));
+ }
+ break;
+ }
+ case UBIFS_CS_NODE:
+ break;
+ case UBIFS_ORPH_NODE:
+ {
+ const struct ubifs_orph_node *orph = node;
+
+ printk(KERN_DEBUG "\tcommit number %llu\n",
+ le64_to_cpu(orph->cmt_no) & LLONG_MAX);
+ printk(KERN_DEBUG "\tlast node flag %llu\n",
+ le64_to_cpu(orph->cmt_no) >> 63);
+ n = (le32_to_cpu(ch->len) - UBIFS_ORPH_NODE_SZ) >> 3;
+ printk(KERN_DEBUG "\t%d orphan inode numbers:\n", n);
+ for (i = 0; i < n; i++)
+ printk(KERN_DEBUG "\t ino %llu\n",
+ le64_to_cpu(orph->inos[i]));
+ break;
+ }
+ default:
+ printk(KERN_DEBUG "node type %d was not recognized\n",
+ (int)ch->node_type);
+ }
+ spin_unlock(&dbg_lock);
+}
+
+void dbg_dump_budget_req(const struct ubifs_budget_req *req)
+{
+ spin_lock(&dbg_lock);
+ printk(KERN_DEBUG "Budgeting request: new_ino %d, dirtied_ino %d\n",
+ req->new_ino, req->dirtied_ino);
+ printk(KERN_DEBUG "\tnew_ino_d %d, dirtied_ino_d %d\n",
+ req->new_ino_d, req->dirtied_ino_d);
+ printk(KERN_DEBUG "\tnew_page %d, dirtied_page %d\n",
+ req->new_page, req->dirtied_page);
+ printk(KERN_DEBUG "\tnew_dent %d, mod_dent %d\n",
+ req->new_dent, req->mod_dent);
+ printk(KERN_DEBUG "\tidx_growth %d\n", req->idx_growth);
+ printk(KERN_DEBUG "\tdata_growth %d dd_growth %d\n",
+ req->data_growth, req->dd_growth);
+ spin_unlock(&dbg_lock);
+}
+
+void dbg_dump_lstats(const struct ubifs_lp_stats *lst)
+{
+ spin_lock(&dbg_lock);
+ printk(KERN_DEBUG "Lprops statistics: empty_lebs %d, idx_lebs %d\n",
+ lst->empty_lebs, lst->idx_lebs);
+ printk(KERN_DEBUG "\ttaken_empty_lebs %d, total_free %lld, "
+ "total_dirty %lld\n", lst->taken_empty_lebs, lst->total_free,
+ lst->total_dirty);
+ printk(KERN_DEBUG "\ttotal_used %lld, total_dark %lld, "
+ "total_dead %lld\n", lst->total_used, lst->total_dark,
+ lst->total_dead);
+ spin_unlock(&dbg_lock);
+}
+
+void dbg_dump_budg(struct ubifs_info *c)
+{
+ int i;
+ struct rb_node *rb;
+ struct ubifs_bud *bud;
+ struct ubifs_gced_idx_leb *idx_gc;
+
+ spin_lock(&dbg_lock);
+ printk(KERN_DEBUG "Budgeting info: budg_data_growth %lld, "
+ "budg_dd_growth %lld, budg_idx_growth %lld\n",
+ c->budg_data_growth, c->budg_dd_growth, c->budg_idx_growth);
+ printk(KERN_DEBUG "\tdata budget sum %lld, total budget sum %lld, "
+ "freeable_cnt %d\n", c->budg_data_growth + c->budg_dd_growth,
+ c->budg_data_growth + c->budg_dd_growth + c->budg_idx_growth,
+ c->freeable_cnt);
+ printk(KERN_DEBUG "\tmin_idx_lebs %d, old_idx_sz %lld, "
+ "calc_idx_sz %lld, idx_gc_cnt %d\n", c->min_idx_lebs,
+ c->old_idx_sz, c->calc_idx_sz, c->idx_gc_cnt);
+ printk(KERN_DEBUG "\tdirty_pg_cnt %ld, dirty_ino_cnt %ld, "
+ "dirty_zn_cnt %ld, clean_zn_cnt %ld\n",
+ atomic_long_read(&c->dirty_pg_cnt),
+ atomic_long_read(&c->dirty_ino_cnt),
+ atomic_long_read(&c->dirty_zn_cnt),
+ atomic_long_read(&c->clean_zn_cnt));
+ printk(KERN_DEBUG "\tdark_wm %d, dead_wm %d, max_idx_node_sz %d\n",
+ c->dark_wm, c->dead_wm, c->max_idx_node_sz);
+ printk(KERN_DEBUG "\tgc_lnum %d, ihead_lnum %d\n",
+ c->gc_lnum, c->ihead_lnum);
+ for (i = 0; i < c->jhead_cnt; i++)
+ printk(KERN_DEBUG "\tjhead %d\t LEB %d\n",
+ c->jheads[i].wbuf.jhead, c->jheads[i].wbuf.lnum);
+ for (rb = rb_first(&c->buds); rb; rb = rb_next(rb)) {
+ bud = rb_entry(rb, struct ubifs_bud, rb);
+ printk(KERN_DEBUG "\tbud LEB %d\n", bud->lnum);
+ }
+ list_for_each_entry(bud, &c->old_buds, list)
+ printk(KERN_DEBUG "\told bud LEB %d\n", bud->lnum);
+ list_for_each_entry(idx_gc, &c->idx_gc, list)
+ printk(KERN_DEBUG "\tGC'ed idx LEB %d unmap %d\n",
+ idx_gc->lnum, idx_gc->unmap);
+ printk(KERN_DEBUG "\tcommit state %d\n", c->cmt_state);
+ spin_unlock(&dbg_lock);
+}
+
+void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp)
+{
+ printk(KERN_DEBUG "LEB %d lprops: free %d, dirty %d (used %d), "
+ "flags %#x\n", lp->lnum, lp->free, lp->dirty,
+ c->leb_size - lp->free - lp->dirty, lp->flags);
+}
+
+void dbg_dump_lprops(struct ubifs_info *c)
+{
+ int lnum, err;
+ struct ubifs_lprops lp;
+ struct ubifs_lp_stats lst;
+
+ printk(KERN_DEBUG "Dumping LEB properties\n");
+ ubifs_get_lp_stats(c, &lst);
+ dbg_dump_lstats(&lst);
+
+ for (lnum = c->main_first; lnum < c->leb_cnt; lnum++) {
+ err = ubifs_read_one_lp(c, lnum, &lp);
+ if (err)
+ ubifs_err("cannot read lprops for LEB %d", lnum);
+
+ dbg_dump_lprop(c, &lp);
+ }
+}
+
+void dbg_dump_leb(const struct ubifs_info *c, int lnum)
+{
+ struct ubifs_scan_leb *sleb;
+ struct ubifs_scan_node *snod;
+
+ if (dbg_failure_mode)
+ return;
+
+ printk(KERN_DEBUG "Dumping LEB %d\n", lnum);
+
+ sleb = ubifs_scan(c, lnum, 0, c->dbg_buf);
+ if (IS_ERR(sleb)) {
+ ubifs_err("scan error %d", (int)PTR_ERR(sleb));
+ return;
+ }
+
+ printk(KERN_DEBUG "LEB %d has %d nodes ending at %d\n", lnum,
+ sleb->nodes_cnt, sleb->endpt);
+
+ list_for_each_entry(snod, &sleb->nodes, list) {
+ cond_resched();
+ printk(KERN_DEBUG "Dumping node at LEB %d:%d len %d\n", lnum,
+ snod->offs, snod->len);
+ dbg_dump_node(c, snod->node);
+ }
+
+ ubifs_scan_destroy(sleb);
+ return;
+}
+
+void dbg_dump_znode(const struct ubifs_info *c, const struct ubifs_znode *znode)
+{
+ int n;
+
+ spin_lock(&dbg_lock);
+ printk(KERN_DEBUG "znode %p, parent %p iip %d level %d child_cnt %d "
+ "flags %lx\n", znode, znode->parent, znode->iip, znode->level,
+ znode->child_cnt, znode->flags);
+
+ if (znode->child_cnt <= 0 || znode->child_cnt > c->fanout) {
+ spin_unlock(&dbg_lock);
+ return;
+ }
+
+ printk(KERN_DEBUG "zbranches:\n");
+ for (n = 0; n < znode->child_cnt; n++) {
+ const struct ubifs_zbranch *zbr = &znode->zbranch[n];
+
+ cond_resched();
+ if (znode->level > 0)
+ printk(KERN_DEBUG "\t%d: znode %p lnum %d offs %d "
+ "len %d key %s\n", n, zbr->znode,
+ zbr->lnum, zbr->offs, zbr->len,
+ dbg_get_key_dump(c, &zbr->key));
+ else
+ printk(KERN_DEBUG "\t%d: LNC %p lnum %d offs %d "
+ "len %d key %s\n", n, zbr->znode,
+ zbr->lnum, zbr->offs, zbr->len,
+ dbg_get_key_dump(c, &zbr->key));
+ }
+ spin_unlock(&dbg_lock);
+}
+
+void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat)
+{
+ int i;
+
+ printk(KERN_DEBUG "Dumping heap cat %d (%d elements)\n",
+ cat, heap->cnt);
+ for (i = 0; i < heap->cnt; i++) {
+ struct ubifs_lprops *lprops = heap->arr[i];
+
+ printk(KERN_DEBUG "\t%d. LEB %d hpos %d free %d dirty %d "
+ "flags %d\n", i, lprops->lnum, lprops->hpos,
+ lprops->free, lprops->dirty, lprops->flags);
+ }
+}
+
+void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
+ struct ubifs_nnode *parent, int iip)
+{
+ int i;
+
+ printk(KERN_DEBUG "Dumping pnode:\n");
+ printk(KERN_DEBUG "\taddress %zx parent %zx cnext %zx\n",
+ (size_t)pnode, (size_t)parent, (size_t)pnode->cnext);
+ printk(KERN_DEBUG "\tflags %lu iip %d level %d num %d\n",
+ pnode->flags, iip, pnode->level, pnode->num);
+ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
+ struct ubifs_lprops *lp = &pnode->lprops[i];
+
+ printk(KERN_DEBUG "\t%d: free %d dirty %d flags %d lnum %d\n",
+ i, lp->free, lp->dirty, lp->flags, lp->lnum);
+ }
+}
+
+#ifdef CONFIG_UBIFS_FS_DEBUG_CHK_OTHER
+
+/*
+ * dbg_check_dir - check directory inode size.
+ * @c: UBIFS file-system description object
+ * @dir: the directory to calculate size for
+ * @size: the result is returned here
+ *
+ * This function makes sure that directory size is correct. Returns zero
+ * in case of success and a negative error code in case of failure.
+ *
+ * Note, it is good idea to make sure the @dir->i_mutex is locked before
+ * calling this function.
+ */
+int dbg_check_dir_size(struct ubifs_info *c, const struct inode *dir)
+{
+ union ubifs_key key;
+ struct ubifs_dent_node *dent, *pdent = NULL;
+ struct qstr nm = { .name = NULL };
+ loff_t size = 0;
+
+ if (!S_ISDIR(dir->i_mode))
+ return 0;
+
+ lowest_dent_key(c, &key, dir->i_ino);
+ while (1) {
+ int err;
+
+ dent = ubifs_tnc_next_ent(c, &key, &nm);
+ if (IS_ERR(dent)) {
+ err = PTR_ERR(dent);
+ if (err == -ENOENT)
+ break;
+ return err;
+ }
+
+ size += CALC_DENT_SIZE(dent->nlen);
+ nm.name = dent->name;
+ nm.len = le16_to_cpu(dent->nlen);
+ dbg_kfree(pdent); /* kfree via debug function */
+ pdent = dent;
+ key_read(c, &dent->key, &key);
+ }
+
+ dbg_kfree(pdent); /* kfree via debug function */
+
+ if (i_size_read(dir) != size) {
+ ubifs_err("bad directory dir %lu size %llu, "
+ "calculated %llu", dir->i_ino,
+ i_size_read(dir), size);
+ dump_stack();
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+#endif /* CONFIG_UBIFS_FS_DEBUG_CHK_OTHER */
+
+void *dbg_kmalloc(size_t size, gfp_t flags)
+{
+ void *addr;
+
+ addr = kmalloc(size, flags);
+ if (addr != NULL) {
+ spin_lock(&dbg_lock);
+ km_alloc_cnt += 1;
+ spin_unlock(&dbg_lock);
+ }
+ return addr;
+}
+
+void *dbg_kzalloc(size_t size, gfp_t flags)
+{
+ void *addr;
+
+ addr = kzalloc(size, flags);
+ if (addr != NULL) {
+ spin_lock(&dbg_lock);
+ km_alloc_cnt += 1;
+ spin_unlock(&dbg_lock);
+ }
+ return addr;
+}
+
+void dbg_kfree(const void *addr)
+{
+ if (addr != NULL) {
+ spin_lock(&dbg_lock);
+ km_alloc_cnt -= 1;
+ spin_unlock(&dbg_lock);
+ kfree(addr);
+ }
+}
+
+void *dbg_vmalloc(size_t size)
+{
+ void *addr;
+
+ addr = vmalloc(size);
+ if (addr != NULL) {
+ spin_lock(&dbg_lock);
+ vm_alloc_cnt += 1;
+ spin_unlock(&dbg_lock);
+ }
+ return addr;
+}
+
+void dbg_vfree(void *addr)
+{
+ if (addr != NULL) {
+ spin_lock(&dbg_lock);
+ vm_alloc_cnt -= 1;
+ spin_unlock(&dbg_lock);
+ vfree(addr);
+ }
+}
+
+void dbg_leak_report(void)
+{
+ spin_lock(&dbg_lock);
+ if (km_alloc_cnt || vm_alloc_cnt) {
+ ubifs_err("kmalloc: leak count %zd", km_alloc_cnt);
+ ubifs_err("vmalloc: leak count %zd", vm_alloc_cnt);
+ }
+ spin_unlock(&dbg_lock);
+}
+
+#ifdef CONFIG_UBIFS_FS_DEBUG_CHK_MEMPRESS
+
+/*
+ * The below debugging stuff helps to make fake Linux memory pressure in order
+ * to make UBIFS shrinker be invoked. Useful for testing.
+ */
+
+/*
+ * struct eaten_memory - memory object eaten by UBIFS to cause memory pressure.
+ * @list: link in the list of eaten memory objects
+ * @pad: just pads to memory page size
+ */
+struct eaten_memory {
+ struct list_head list;
+ uint8_t pad[PAGE_CACHE_SIZE - sizeof(struct list_head)];
+};
+
+/* List of eaten memory pages */
+static LIST_HEAD(eaten_list);
+/* Count of allocated 'struct eaten_memory' objects */
+static unsigned long eaten_cnt;
+/* Protects 'eaten_list' and 'eaten_cnt' */
+static DEFINE_SPINLOCK(eaten_lock);
+
+void dbg_eat_memory(void)
+{
+ struct eaten_memory *em;
+
+ em = kmalloc(sizeof(struct eaten_memory), GFP_NOFS);
+ if (!em) {
+ ubifs_err("cannot allocate eaten memory structure");
+ return;
+ }
+
+ spin_lock(&eaten_lock);
+ list_add_tail(&em->list, &eaten_list);
+ eaten_cnt += 1;
+ spin_unlock(&eaten_lock);
+}
+
+static int return_eaten_memory(int nr)
+{
+ int free_all = 0, freed = 0;
+ struct eaten_memory *em;
+
+ if (nr == 0)
+ return eaten_cnt;
+
+ if (nr == -1)
+ free_all = 1;
+
+ while (nr > 0 || free_all) {
+ spin_lock(&eaten_lock);
+ if (eaten_cnt == 0) {
+ spin_unlock(&eaten_lock);
+ break;
+ }
+
+ em = list_entry(eaten_list.next, struct eaten_memory, list);
+ list_del(&em->list);
+ eaten_cnt -= 1;
+ spin_unlock(&eaten_lock);
+
+ kfree(em);
+ nr -= 1;
+ freed += 1;
+ }
+
+ return freed;
+}
+
+static int dbg_shrinker(int nr, gfp_t gfp_mask)
+{
+ return return_eaten_memory(nr);
+}
+
+static struct shrinker dbg_shrinker_info = {
+ .shrink = dbg_shrinker,
+ .seeks = DEFAULT_SEEKS,
+};
+
+void __init dbg_mempressure_init(void)
+{
+ register_shrinker(&dbg_shrinker_info);
+}
+
+void dbg_mempressure_exit(void)
+{
+ unregister_shrinker(&dbg_shrinker_info);
+ return_eaten_memory(-1);
+}
+
+#endif /* CONFIG_UBIFS_FS_DEBUG_CHK_MEMPRESS */
+
+#ifdef CONFIG_UBIFS_FS_DEBUG_TEST_RCVRY
+
+#define chance(n, d) (simple_rand() <= (n) * 32768LL / (d))
+
+struct failure_mode_info {
+ struct list_head list;
+ struct ubifs_info *c;
+};
+
+static LIST_HEAD(fmi_list);
+static DEFINE_SPINLOCK(fmi_lock);
+
+static unsigned int next;
+
+static int simple_rand(void)
+{
+ if (next == 0)
+ next = current->pid;
+ next = next * 1103515245 + 12345;
+ return (next >> 16) & 32767;
+}
+
+void dbg_failure_mode_registration(struct ubifs_info *c)
+{
+ struct failure_mode_info *fmi;
+
+ fmi = kmalloc(sizeof(struct failure_mode_info), GFP_NOFS);
+ if (!fmi) {
+ dbg_err("Failed to register failure mode - no memory");
+ return;
+ }
+ fmi->c = c;
+ spin_lock(&fmi_lock);
+ list_add_tail(&fmi->list, &fmi_list);
+ spin_unlock(&fmi_lock);
+}
+
+void dbg_failure_mode_deregistration(struct ubifs_info *c)
+{
+ struct failure_mode_info *fmi, *tmp;
+
+ spin_lock(&fmi_lock);
+ list_for_each_entry_safe(fmi, tmp, &fmi_list, list)
+ if (fmi->c == c) {
+ list_del(&fmi->list);
+ kfree(fmi);
+ }
+ spin_unlock(&fmi_lock);
+}
+
+static struct ubifs_info *dbg_find_info(struct ubi_volume_desc *desc)
+{
+ struct failure_mode_info *fmi;
+
+ spin_lock(&fmi_lock);
+ list_for_each_entry(fmi, &fmi_list, list)
+ if (fmi->c->ubi == desc) {
+ struct ubifs_info *c = fmi->c;
+
+ spin_unlock(&fmi_lock);
+ return c;
+ }
+ spin_unlock(&fmi_lock);
+ return NULL;
+}
+
+static int in_failure_mode(struct ubi_volume_desc *desc)
+{
+ struct ubifs_info *c = dbg_find_info(desc);
+
+ if (c)
+ return c->failure_mode;
+ return 0;
+}
+
+static int do_fail(struct ubi_volume_desc *desc, int lnum, int write)
+{
+ struct ubifs_info *c = dbg_find_info(desc);
+
+ if (!c)
+ return 0;
+ if (c->failure_mode)
+ return 1;
+ if (lnum == UBIFS_SB_LNUM)
+ return 0;
+ else if (lnum == UBIFS_MST_LNUM || lnum == UBIFS_MST_LNUM + 1) {
+ if (chance(19, 20))
+ return 0;
+ dbg_mnt("failing in master LEB %d", lnum);
+ } else if (lnum >= UBIFS_LOG_LNUM && lnum <= c->log_last) {
+ if (write && chance(99, 100))
+ return 0;
+ else if (chance(399, 400))
+ return 0;
+ dbg_mnt("failing in log LEB %d", lnum);
+ } else if (lnum >= c->lpt_first && lnum <= c->lpt_last) {
+ if (write && chance(99, 100))
+ return 0;
+ else if (chance(399, 400))
+ return 0;
+ dbg_mnt("failing in LPT LEB %d", lnum);
+ } else if (lnum >= c->orph_first && lnum <= c->orph_last) {
+ if (write && chance(9, 10))
+ return 0;
+ else if (chance(39, 40))
+ return 0;
+ dbg_mnt("failing in orphan LEB %d", lnum);
+ } else if (lnum == c->ihead_lnum) {
+ if (chance(99, 100))
+ return 0;
+ dbg_mnt("failing in index head LEB %d", lnum);
+ } else if (write && !RB_EMPTY_ROOT(&c->buds) &&
+ ubifs_search_bud(c, lnum) == NULL) {
+ if (chance(19, 20))
+ return 0;
+ dbg_mnt("failing in non-bud LEB %d", lnum);
+ } else if (c->cmt_state == COMMIT_RUNNING_BACKGROUND ||
+ c->cmt_state == COMMIT_RUNNING_REQUIRED) {
+ if (chance(999, 1000))
+ return 0;
+ dbg_mnt("failing in bud LEB %d commit running", lnum);
+ } else {
+ if (chance(9999, 10000))
+ return 0;
+ dbg_mnt("failing in bud LEB %d commit not running", lnum);
+ }
+ ubifs_err("*** SETTING FAILURE MODE ON ***");
+ c->failure_mode = 1;
+ dump_stack();
+ return 1;
+}
+
+static void cut_data(const void *buf, int len)
+{
+ int flen, i;
+ unsigned char *p = (void *)buf;
+
+ flen = (len * (long long)simple_rand()) >> 15;
+ for (i = flen; i < len; i++)
+ p[i] = 0xff;
+}
+
+int dbg_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset,
+ int len, int check)
+{
+ if (in_failure_mode(desc))
+ return -EIO;
+ return ubi_leb_read(desc, lnum, buf, offset, len, check);
+}
+
+int dbg_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
+ int offset, int len, int dtype)
+{
+ int err;
+
+ if (in_failure_mode(desc))
+ return -EIO;
+ if (do_fail(desc, lnum, 1))
+ cut_data(buf, len);
+ err = ubi_leb_write(desc, lnum, buf, offset, len, dtype);
+ if (err)
+ return err;
+ if (in_failure_mode(desc))
+ return -EIO;
+ return 0;
+}
+
+int dbg_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
+ int len, int dtype)
+{
+ int err;
+
+ if (do_fail(desc, lnum, 1))
+ return -EIO;
+ err = ubi_leb_change(desc, lnum, buf, len, dtype);
+ if (err)
+ return err;
+ if (do_fail(desc, lnum, 1))
+ return -EIO;
+ return 0;
+}
+
+int dbg_leb_erase(struct ubi_volume_desc *desc, int lnum)
+{
+ int err;
+
+ if (do_fail(desc, lnum, 0))
+ return -EIO;
+ err = ubi_leb_erase(desc, lnum);
+ if (err)
+ return err;
+ if (do_fail(desc, lnum, 0))
+ return -EIO;
+ return 0;
+}
+
+int dbg_leb_unmap(struct ubi_volume_desc *desc, int lnum)
+{
+ int err;
+
+ if (do_fail(desc, lnum, 0))
+ return -EIO;
+ err = ubi_leb_unmap(desc, lnum);
+ if (err)
+ return err;
+ if (do_fail(desc, lnum, 0))
+ return -EIO;
+ return 0;
+}
+
+int dbg_is_mapped(struct ubi_volume_desc *desc, int lnum)
+{
+ if (in_failure_mode(desc))
+ return -EIO;
+ return ubi_is_mapped(desc, lnum);
+}
+
+#endif /* CONFIG_UBIFS_FS_DEBUG_TEST_RCVRY */
+#endif /* CONFIG_UBIFS_FS_DEBUG */
diff --git a/fs/ubifs/debug.h b/fs/ubifs/debug.h
new file mode 100644
index 0000000..7746ad6
--- /dev/null
+++ b/fs/ubifs/debug.h
@@ -0,0 +1,343 @@
+/*
+ * This file is part of UBIFS.
+ *
+ * Copyright (C) 2006-2008 Nokia Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Authors: Artem Bityutskiy (Битюцкий Артём)
+ * Adrian Hunter
+ */
+
+#ifndef __UBIFS_DEBUG_H__
+#define __UBIFS_DEBUG_H__
+
+#ifdef CONFIG_UBIFS_FS_DEBUG
+#define UBIFS_DBG(op) op
+#define ubifs_assert(expr) do { \
+ if (unlikely(!(expr))) { \
+ printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \
+ __func__, __LINE__, current->pid); \
+ dump_stack(); \
+ } \
+} while (0)
+
+/* Generic debugging message */
+#define dbg_msg(fmt, ...) do { \
+ printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", current->pid, \
+ __func__, ##__VA_ARGS__); \
+} while (0)
+
+/* Debugging message which prints UBIFS key */
+#define dbg_key(c, key, fmt, ...) do { \
+ spin_lock(&dbg_lock); \
+ printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt " %s\n", \
+ current->pid, __func__, ##__VA_ARGS__, \
+ dbg_get_key_dump(c, key)); \
+ spin_unlock(&dbg_lock); \
+} while (0)
+
+#define dbg_err(fmt, ...) ubifs_err(fmt, ##__VA_ARGS__)
+#define dbg_dump_stack() dump_stack()
+
+#define ubifs_assert_cmt_locked(c) do { \
+ if (unlikely(down_write_trylock(&(c)->commit_sem))) { \
+ up_write(&(c)->commit_sem); \
+ printk(KERN_CRIT "commit lock is not locked!\n"); \
+ ubifs_assert(0); \
+ } \
+} while (0)
+
+#ifndef UBIFS_DBG_PRESERVE_KMALLOC
+#define kmalloc dbg_kmalloc
+#define kzalloc dbg_kzalloc
+#define kfree dbg_kfree
+#define vmalloc dbg_vmalloc
+#define vfree dbg_vfree
+#endif
+
+#else
+
+#define UBIFS_DBG(op)
+#define ubifs_assert(expr) ({})
+#define dbg_msg(fmt, ...) ({})
+#define dbg_key(c, key, fmt, ...) ({})
+#define dbg_err(fmt, ...) ({})
+#define dbg_dump_stack()
+#define ubifs_assert_cmt_locked(c)
+
+#endif /* !CONFIG_UBIFS_FS_DEBUG */
+
+#ifdef CONFIG_UBIFS_FS_DEBUG
+
+extern spinlock_t dbg_lock;
+const char *dbg_ntype(int type);
+const char *dbg_cstate(int cmt_state);
+const char *dbg_get_key_dump(const struct ubifs_info *c,
+ const union ubifs_key *key);
+void dbg_dump_node(const struct ubifs_info *c, const void *node);
+void dbg_dump_budget_req(const struct ubifs_budget_req *req);
+void dbg_dump_lstats(const struct ubifs_lp_stats *lst);
+void dbg_dump_budg(struct ubifs_info *c);
+void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp);
+void dbg_dump_lprops(struct ubifs_info *c);
+void dbg_dump_leb(const struct ubifs_info *c, int lnum);
+void dbg_dump_znode(const struct ubifs_info *c,
+ const struct ubifs_znode *znode);
+void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat);
+void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
+ struct ubifs_nnode *parent, int iip);
+
+void *dbg_kmalloc(size_t size, gfp_t flags);
+void *dbg_kzalloc(size_t size, gfp_t flags);
+void dbg_kfree(const void *addr);
+void *dbg_vmalloc(size_t size);
+void dbg_vfree(void *addr);
+void dbg_leak_report(void);
+
+typedef int (*dbg_leaf_callback)(struct ubifs_info *c,
+ struct ubifs_zbranch *zbr, void *priv);
+typedef int (*dbg_znode_callback)(struct ubifs_info *c,
+ struct ubifs_znode *znode, void *priv);
+
+int dbg_walk_index(struct ubifs_info *c, dbg_leaf_callback leaf_cb,
+ dbg_znode_callback znode_cb, void *priv);
+int dbg_read_leaf_nolock(struct ubifs_info *c, struct ubifs_zbranch *zbr,
+ void *node);
+#else
+
+#define dbg_ntype(type) ""
+#define dbg_cstate(cmt_state) ""
+#define dbg_get_key_dump(c, key) ({})
+#define dbg_dump_node(c, node) ({})
+#define dbg_dump_budget_req(req) ({})
+#define dbg_dump_lstats(lst) ({})
+#define dbg_dump_budg(c) ({})
+#define dbg_dump_lprop(c, lp) ({})
+#define dbg_dump_lprops(c) ({})
+#define dbg_dump_leb(c, lnum) ({})
+#define dbg_dump_znode(c, znode) ({})
+#define dbg_dump_heap(c, heap, cat) ({})
+#define dbg_dump_pnode(c, pnode, parent, iip) ({})
+
+#define dbg_leak_report() ({})
+#define dbg_walk_index(c, leaf_cb, znode_cb, priv) 0
+#define dbg_read_leaf_nolock(c, zbr, node) 0
+
+#endif /* !CONFIG_UBIFS_FS_DEBUG */
+
+#ifdef CONFIG_UBIFS_FS_DEBUG_CHK_MEMPRESS
+void dbg_eat_memory(void);
+void __init dbg_mempressure_init(void);
+void dbg_mempressure_exit(void);
+#else
+#define dbg_eat_memory() ({})
+#define dbg_mempressure_init() ({})
+#define dbg_mempressure_exit() ({})
+#endif
+
+#ifdef CONFIG_UBIFS_FS_DEBUG_CHK_LPROPS
+int dbg_check_lprops(struct ubifs_info *c);
+#else
+#define dbg_check_lprops(c) 0
+#endif
+
+#ifdef CONFIG_UBIFS_FS_DEBUG_CHK_OLD_IDX
+int dbg_old_index_check_init(struct ubifs_info *c, struct ubifs_zbranch *zroot);
+int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot);
+#else
+#define dbg_old_index_check_init(c, zroot) 0
+#define dbg_check_old_index(c, zroot) 0
+#endif
+
+#if defined(CONFIG_UBIFS_FS_DEBUG_CHK_LPROPS) || \
+ defined(CONFIG_UBIFS_FS_DEBUG_CHK_OTHER)
+int dbg_check_cats(struct ubifs_info *c);
+#else
+#define dbg_check_cats(c) 0
+#endif
+
+/* General messages */
+#ifdef CONFIG_UBIFS_FS_DEBUG_MSG_GEN
+#define dbg_gen(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
+#define dbg_gen_key(c, key, fmt, ...) dbg_key(c, key, fmt, ##__VA_ARGS__)
+#else
+#define dbg_gen(fmt, ...) ({})
+#define dbg_gen_key(c, key, fmt, ...) ({})
+#endif
+
+/* Additional journal messages */
+#ifdef CONFIG_UBIFS_FS_DEBUG_MSG_JRN
+#define dbg_jrn(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
+#define dbg_jrn_key(c, key, fmt, ...) dbg_key(c, key, fmt, ##__VA_ARGS__)
+#else
+#define dbg_jrn(fmt, ...) ({})
+#define dbg_jrn_key(c, key, fmt, ...) ({})
+#endif
+
+/* Additional TNC messages */
+#ifdef CONFIG_UBIFS_FS_DEBUG_MSG_TNC
+#define dbg_tnc(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
+#define dbg_tnc_key(c, key, fmt, ...) dbg_key(c, key, fmt, ##__VA_ARGS__)
+#else
+#define dbg_tnc(fmt, ...) ({})
+#define dbg_tnc_key(c, key, fmt, ...) ({})
+#endif
+
+/* Additional lprops messages */
+#ifdef CONFIG_UBIFS_FS_DEBUG_MSG_LP
+#define dbg_lp(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
+#else
+#define dbg_lp(fmt, ...) ({})
+#endif
+
+/* Additional LEB find messages */
+#ifdef CONFIG_UBIFS_FS_DEBUG_MSG_FIND
+#define dbg_find(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
+#else
+#define dbg_find(fmt, ...) ({})
+#endif
+
+/* Additional mount messages */
+#ifdef CONFIG_UBIFS_FS_DEBUG_MSG_MNT
+#define dbg_mnt(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
+#define dbg_mnt_key(c, key, fmt, ...) dbg_key(c, key, fmt, ##__VA_ARGS__)
+#else
+#define dbg_mnt(fmt, ...) ({})
+#define dbg_mnt_key(c, key, fmt, ...) ({})
+#endif
+
+/* Additional I/O messages */
+#ifdef CONFIG_UBIFS_FS_DEBUG_MSG_IO
+#define dbg_io(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
+#else
+#define dbg_io(fmt, ...) ({})
+#endif
+
+/* Additional commit messages */
+#ifdef CONFIG_UBIFS_FS_DEBUG_MSG_CMT
+#define dbg_cmt(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
+#else
+#define dbg_cmt(fmt, ...) ({})
+#endif
+
+/* Additional budgeting messages */
+#ifdef CONFIG_UBIFS_FS_DEBUG_MSG_BUDG
+#define dbg_budg(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
+#else
+#define dbg_budg(fmt, ...) ({})
+#endif
+
+/* Additional log messages */
+#ifdef CONFIG_UBIFS_FS_DEBUG_MSG_LOG
+#define dbg_log(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
+#else
+#define dbg_log(fmt, ...) ({})
+#endif
+
+/* Additional gc messages */
+#ifdef CONFIG_UBIFS_FS_DEBUG_MSG_GC
+#define dbg_gc(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
+#define dbg_gc_key(c, key, fmt, ...) dbg_key(c, key, fmt, ##__VA_ARGS__)
+#else
+#define dbg_gc(fmt, ...) ({})
+#define dbg_gc_key(c, key, fmt, ...) ({})
+#endif
+
+/* Additional scan messages */
+#ifdef CONFIG_UBIFS_FS_DEBUG_MSG_SCAN
+#define dbg_scan(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
+#else
+#define dbg_scan(fmt, ...) ({})
+#endif
+
+#ifdef CONFIG_UBIFS_FS_DEBUG_CHK_OTHER
+int dbg_check_dir_size(struct ubifs_info *c, const struct inode *dir);
+#else
+#define dbg_check_dir_size(c, dir) 0
+#endif
+
+#ifdef CONFIG_UBIFS_FS_DEBUG_CHK_TNC
+int dbg_check_tnc(struct ubifs_info *c, int extra);
+#else
+#define dbg_check_tnc(c, x) 0
+#endif
+
+#ifdef CONFIG_UBIFS_FS_DEBUG_CHK_IDX_SZ
+int dbg_check_idx_size(struct ubifs_info *c, long long idx_size);
+#else
+#define dbg_check_idx_size(c, idx_size) 0
+#endif
+
+#ifdef CONFIG_UBIFS_FS_DEBUG_CHK_LPROPS
+int dbg_check_lprops(struct ubifs_info *c);
+int dbg_check_lpt_nodes(struct ubifs_info *c, struct ubifs_cnode *cnode,
+ int row, int col);
+#else
+#define dbg_check_lprops(c) 0
+#define dbg_check_lpt_nodes(c, cnode, row, col) 0
+#endif
+
+#ifdef CONFIG_UBIFS_FS_DEBUG_TEST_RCVRY
+
+void dbg_failure_mode_registration(struct ubifs_info *c);
+void dbg_failure_mode_deregistration(struct ubifs_info *c);
+
+#undef dbg_dump_stack
+#define dbg_dump_stack()
+#define dbg_failure_mode 1
+
+#ifndef UBIFS_DBG_PRESERVE_UBI
+#define ubi_leb_read dbg_leb_read
+#define ubi_leb_write dbg_leb_write
+#define ubi_leb_change dbg_leb_change
+#define ubi_leb_erase dbg_leb_erase
+#define ubi_leb_unmap dbg_leb_unmap
+#define ubi_is_mapped dbg_is_mapped
+
+int dbg_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset,
+ int len, int check);
+int dbg_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
+ int offset, int len, int dtype);
+int dbg_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
+ int len, int dtype);
+int dbg_leb_erase(struct ubi_volume_desc *desc, int lnum);
+int dbg_leb_unmap(struct ubi_volume_desc *desc, int lnum);
+int dbg_is_mapped(struct ubi_volume_desc *desc, int lnum);
+static inline int dbg_read(struct ubi_volume_desc *desc, int lnum, char *buf,
+ int offset, int len)
+{
+ return dbg_leb_read(desc, lnum, buf, offset, len, 0);
+}
+static inline int dbg_write(struct ubi_volume_desc *desc, int lnum,
+ const void *buf, int offset, int len)
+{
+ return dbg_leb_write(desc, lnum, buf, offset, len, UBI_UNKNOWN);
+}
+static inline int dbg_change(struct ubi_volume_desc *desc, int lnum,
+ const void *buf, int len)
+{
+ return dbg_leb_change(desc, lnum, buf, len, UBI_UNKNOWN);
+}
+#endif /* !UBIFS_DBG_PRESERVE_UBI */
+
+#else
+
+#define dbg_failure_mode_registration(c) ({})
+#define dbg_failure_mode_deregistration(c) ({})
+#define dbg_failure_mode 0
+
+#endif /* !CONFIG_UBIFS_FS_DEBUG_TEST_RCVRY */
+
+#endif /* !__UBIFS_DEBUG_H__ */
--
1.5.4.1
--
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