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debug.c
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debug.c
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/*
* 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_UBI
#include "ubifs.h"
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/debugfs.h>
#include <linux/math64.h>
#ifdef CONFIG_UBIFS_FS_DEBUG
DEFINE_SPINLOCK(dbg_lock);
static char dbg_key_buf0[128];
static char dbg_key_buf1[128];
unsigned int ubifs_msg_flags = UBIFS_MSG_FLAGS_DEFAULT;
unsigned int ubifs_chk_flags = UBIFS_CHK_FLAGS_DEFAULT;
unsigned int ubifs_tst_flags;
module_param_named(debug_msgs, ubifs_msg_flags, uint, S_IRUGO | S_IWUSR);
module_param_named(debug_chks, ubifs_chk_flags, uint, S_IRUGO | S_IWUSR);
module_param_named(debug_tsts, ubifs_tst_flags, uint, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug_msgs, "Debug message type flags");
MODULE_PARM_DESC(debug_chks, "Debug check flags");
MODULE_PARM_DESC(debug_tsts, "Debug special test flags");
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";
}
}
static void sprintf_key(const struct ubifs_info *c, const union ubifs_key *key,
char *buffer)
{
char *p = buffer;
int type = key_type(c, key);
if (c->key_fmt == UBIFS_SIMPLE_KEY_FMT) {
switch (type) {
case UBIFS_INO_KEY:
sprintf(p, "(%lu, %s)", (unsigned long)key_inum(c, key),
get_key_type(type));
break;
case UBIFS_DENT_KEY:
case UBIFS_XENT_KEY:
sprintf(p, "(%lu, %s, %#08x)",
(unsigned long)key_inum(c, key),
get_key_type(type), key_hash(c, key));
break;
case UBIFS_DATA_KEY:
sprintf(p, "(%lu, %s, %u)",
(unsigned long)key_inum(c, key),
get_key_type(type), key_block(c, key));
break;
case UBIFS_TRUN_KEY:
sprintf(p, "(%lu, %s)",
(unsigned long)key_inum(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);
}
const char *dbg_key_str0(const struct ubifs_info *c, const union ubifs_key *key)
{
/* dbg_lock must be held */
sprintf_key(c, key, dbg_key_buf0);
return dbg_key_buf0;
}
const char *dbg_key_str1(const struct ubifs_info *c, const union ubifs_key *key)
{
/* dbg_lock must be held */
sprintf_key(c, key, dbg_key_buf1);
return dbg_key_buf1;
}
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",
(unsigned long long)le64_to_cpu(ch->sqnum));
printk(KERN_DEBUG "\tlen %u\n", le32_to_cpu(ch->len));
}
void dbg_dump_inode(const struct ubifs_info *c, const struct inode *inode)
{
const struct ubifs_inode *ui = ubifs_inode(inode);
printk(KERN_DEBUG "Dump in-memory inode:");
printk(KERN_DEBUG "\tinode %lu\n", inode->i_ino);
printk(KERN_DEBUG "\tsize %llu\n",
(unsigned long long)i_size_read(inode));
printk(KERN_DEBUG "\tnlink %u\n", inode->i_nlink);
printk(KERN_DEBUG "\tuid %u\n", (unsigned int)inode->i_uid);
printk(KERN_DEBUG "\tgid %u\n", (unsigned int)inode->i_gid);
printk(KERN_DEBUG "\tatime %u.%u\n",
(unsigned int)inode->i_atime.tv_sec,
(unsigned int)inode->i_atime.tv_nsec);
printk(KERN_DEBUG "\tmtime %u.%u\n",
(unsigned int)inode->i_mtime.tv_sec,
(unsigned int)inode->i_mtime.tv_nsec);
printk(KERN_DEBUG "\tctime %u.%u\n",
(unsigned int)inode->i_ctime.tv_sec,
(unsigned int)inode->i_ctime.tv_nsec);
printk(KERN_DEBUG "\tcreat_sqnum %llu\n", ui->creat_sqnum);
printk(KERN_DEBUG "\txattr_size %u\n", ui->xattr_size);
printk(KERN_DEBUG "\txattr_cnt %u\n", ui->xattr_cnt);
printk(KERN_DEBUG "\txattr_names %u\n", ui->xattr_names);
printk(KERN_DEBUG "\tdirty %u\n", ui->dirty);
printk(KERN_DEBUG "\txattr %u\n", ui->xattr);
printk(KERN_DEBUG "\tbulk_read %u\n", ui->xattr);
printk(KERN_DEBUG "\tsynced_i_size %llu\n",
(unsigned long long)ui->synced_i_size);
printk(KERN_DEBUG "\tui_size %llu\n",
(unsigned long long)ui->ui_size);
printk(KERN_DEBUG "\tflags %d\n", ui->flags);
printk(KERN_DEBUG "\tcompr_type %d\n", ui->compr_type);
printk(KERN_DEBUG "\tlast_page_read %lu\n", ui->last_page_read);
printk(KERN_DEBUG "\tread_in_a_row %lu\n", ui->read_in_a_row);
printk(KERN_DEBUG "\tdata_len %d\n", ui->data_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 big_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",
(unsigned long long)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",
(unsigned long long)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));
printk(KERN_DEBUG "\tfmt_version %u\n",
le32_to_cpu(sup->fmt_version));
printk(KERN_DEBUG "\ttime_gran %u\n",
le32_to_cpu(sup->time_gran));
printk(KERN_DEBUG "\tUUID %02X%02X%02X%02X-%02X%02X"
"-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X\n",
sup->uuid[0], sup->uuid[1], sup->uuid[2], sup->uuid[3],
sup->uuid[4], sup->uuid[5], sup->uuid[6], sup->uuid[7],
sup->uuid[8], sup->uuid[9], sup->uuid[10], sup->uuid[11],
sup->uuid[12], sup->uuid[13], sup->uuid[14],
sup->uuid[15]);
break;
}
case UBIFS_MST_NODE:
{
const struct ubifs_mst_node *mst = node;
printk(KERN_DEBUG "\thighest_inum %llu\n",
(unsigned long long)le64_to_cpu(mst->highest_inum));
printk(KERN_DEBUG "\tcommit number %llu\n",
(unsigned long long)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 %llu\n",
(unsigned long long)le64_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",
(unsigned long long)le64_to_cpu(mst->total_free));
printk(KERN_DEBUG "\ttotal_dirty %llu\n",
(unsigned long long)le64_to_cpu(mst->total_dirty));
printk(KERN_DEBUG "\ttotal_used %llu\n",
(unsigned long long)le64_to_cpu(mst->total_used));
printk(KERN_DEBUG "\ttotal_dead %llu\n",
(unsigned long long)le64_to_cpu(mst->total_dead));
printk(KERN_DEBUG "\ttotal_dark %llu\n",
(unsigned long long)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", DBGKEY(&key));
printk(KERN_DEBUG "\tcreat_sqnum %llu\n",
(unsigned long long)le64_to_cpu(ino->creat_sqnum));
printk(KERN_DEBUG "\tsize %llu\n",
(unsigned long long)le64_to_cpu(ino->size));
printk(KERN_DEBUG "\tnlink %u\n",
le32_to_cpu(ino->nlink));
printk(KERN_DEBUG "\tatime %lld.%u\n",
(long long)le64_to_cpu(ino->atime_sec),
le32_to_cpu(ino->atime_nsec));
printk(KERN_DEBUG "\tmtime %lld.%u\n",
(long long)le64_to_cpu(ino->mtime_sec),
le32_to_cpu(ino->mtime_nsec));
printk(KERN_DEBUG "\tctime %lld.%u\n",
(long long)le64_to_cpu(ino->ctime_sec),
le32_to_cpu(ino->ctime_nsec));
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 %u\n",
le32_to_cpu(ino->xattr_size));
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", DBGKEY(&key));
printk(KERN_DEBUG "\tinum %llu\n",
(unsigned long long)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)
printk(KERN_DEBUG "(bad name length, not printing, "
"bad or corrupted node)");
else {
for (i = 0; i < nlen && dent->name[i]; i++)
printk(KERN_CONT "%c", dent->name[i]);
}
printk(KERN_CONT "\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", DBGKEY(&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;
printk(KERN_DEBUG "\tinum %u\n",
le32_to_cpu(trun->inum));
printk(KERN_DEBUG "\told_size %llu\n",
(unsigned long long)le64_to_cpu(trun->old_size));
printk(KERN_DEBUG "\tnew_size %llu\n",
(unsigned long long)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 "\tBranches:\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%d: LEB %d:%d len %d key %s\n",
i, le32_to_cpu(br->lnum), le32_to_cpu(br->offs),
le32_to_cpu(br->len), DBGKEY(&key));
}
break;
}
case UBIFS_CS_NODE:
break;
case UBIFS_ORPH_NODE:
{
const struct ubifs_orph_node *orph = node;
printk(KERN_DEBUG "\tcommit number %llu\n",
(unsigned long long)
le64_to_cpu(orph->cmt_no) & LLONG_MAX);
printk(KERN_DEBUG "\tlast node flag %llu\n",
(unsigned long long)(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",
(unsigned long long)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 "(pid %d) Lprops statistics: empty_lebs %d, "
"idx_lebs %d\n", current->pid, 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;
long long available, outstanding, free;
ubifs_assert(spin_is_locked(&c->space_lock));
spin_lock(&dbg_lock);
printk(KERN_DEBUG "(pid %d) Budgeting info: budg_data_growth %lld, "
"budg_dd_growth %lld, budg_idx_growth %lld\n", current->pid,
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_zn_cnt %ld, "
"clean_zn_cnt %ld\n", atomic_long_read(&c->dirty_pg_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);
/* If we are in R/O mode, journal heads do not exist */
if (c->jheads)
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);
/* Print budgeting predictions */
available = ubifs_calc_available(c, c->min_idx_lebs);
outstanding = c->budg_data_growth + c->budg_dd_growth;
free = ubifs_get_free_space_nolock(c);
printk(KERN_DEBUG "Budgeting predictions:\n");
printk(KERN_DEBUG "\tavailable: %lld, outstanding %lld, free %lld\n",
available, outstanding, free);
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 "(pid %d) start dumping LEB properties\n",
current->pid);
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);
}
printk(KERN_DEBUG "(pid %d) finish dumping LEB properties\n",
current->pid);
}
void dbg_dump_lpt_info(struct ubifs_info *c)
{
int i;
spin_lock(&dbg_lock);
printk(KERN_DEBUG "(pid %d) dumping LPT information\n", current->pid);
printk(KERN_DEBUG "\tlpt_sz: %lld\n", c->lpt_sz);
printk(KERN_DEBUG "\tpnode_sz: %d\n", c->pnode_sz);
printk(KERN_DEBUG "\tnnode_sz: %d\n", c->nnode_sz);
printk(KERN_DEBUG "\tltab_sz: %d\n", c->ltab_sz);
printk(KERN_DEBUG "\tlsave_sz: %d\n", c->lsave_sz);
printk(KERN_DEBUG "\tbig_lpt: %d\n", c->big_lpt);
printk(KERN_DEBUG "\tlpt_hght: %d\n", c->lpt_hght);
printk(KERN_DEBUG "\tpnode_cnt: %d\n", c->pnode_cnt);
printk(KERN_DEBUG "\tnnode_cnt: %d\n", c->nnode_cnt);
printk(KERN_DEBUG "\tdirty_pn_cnt: %d\n", c->dirty_pn_cnt);
printk(KERN_DEBUG "\tdirty_nn_cnt: %d\n", c->dirty_nn_cnt);
printk(KERN_DEBUG "\tlsave_cnt: %d\n", c->lsave_cnt);
printk(KERN_DEBUG "\tspace_bits: %d\n", c->space_bits);
printk(KERN_DEBUG "\tlpt_lnum_bits: %d\n", c->lpt_lnum_bits);
printk(KERN_DEBUG "\tlpt_offs_bits: %d\n", c->lpt_offs_bits);
printk(KERN_DEBUG "\tlpt_spc_bits: %d\n", c->lpt_spc_bits);
printk(KERN_DEBUG "\tpcnt_bits: %d\n", c->pcnt_bits);
printk(KERN_DEBUG "\tlnum_bits: %d\n", c->lnum_bits);
printk(KERN_DEBUG "\tLPT root is at %d:%d\n", c->lpt_lnum, c->lpt_offs);
printk(KERN_DEBUG "\tLPT head is at %d:%d\n",
c->nhead_lnum, c->nhead_offs);
printk(KERN_DEBUG "\tLPT ltab is at %d:%d\n",
c->ltab_lnum, c->ltab_offs);
if (c->big_lpt)
printk(KERN_DEBUG "\tLPT lsave is at %d:%d\n",
c->lsave_lnum, c->lsave_offs);
for (i = 0; i < c->lpt_lebs; i++)
printk(KERN_DEBUG "\tLPT LEB %d free %d dirty %d tgc %d "
"cmt %d\n", i + c->lpt_first, c->ltab[i].free,
c->ltab[i].dirty, c->ltab[i].tgc, c->ltab[i].cmt);
spin_unlock(&dbg_lock);
}
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 "(pid %d) start dumping LEB %d\n",
current->pid, 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);
}
printk(KERN_DEBUG "(pid %d) finish dumping LEB %d\n",
current->pid, lnum);
ubifs_scan_destroy(sleb);
return;
}
void dbg_dump_znode(const struct ubifs_info *c,
const struct ubifs_znode *znode)
{
int n;
const struct ubifs_zbranch *zbr;
spin_lock(&dbg_lock);
if (znode->parent)
zbr = &znode->parent->zbranch[znode->iip];
else
zbr = &c->zroot;
printk(KERN_DEBUG "znode %p, LEB %d:%d len %d parent %p iip %d level %d"
" child_cnt %d flags %lx\n", znode, zbr->lnum, zbr->offs,
zbr->len, 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++) {
zbr = &znode->zbranch[n];
if (znode->level > 0)
printk(KERN_DEBUG "\t%d: znode %p LEB %d:%d len %d key "
"%s\n", n, zbr->znode, zbr->lnum,
zbr->offs, zbr->len,
DBGKEY(&zbr->key));
else
printk(KERN_DEBUG "\t%d: LNC %p LEB %d:%d len %d key "
"%s\n", n, zbr->znode, zbr->lnum,
zbr->offs, zbr->len,
DBGKEY(&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 "(pid %d) start dumping heap cat %d (%d elements)\n",
current->pid, 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);
}
printk(KERN_DEBUG "(pid %d) finish dumping heap\n", current->pid);
}
void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
struct ubifs_nnode *parent, int iip)
{
int i;
printk(KERN_DEBUG "(pid %d) dumping pnode:\n", current->pid);
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);
}
}
void dbg_dump_tnc(struct ubifs_info *c)
{
struct ubifs_znode *znode;
int level;
printk(KERN_DEBUG "\n");
printk(KERN_DEBUG "(pid %d) start dumping TNC tree\n", current->pid);
znode = ubifs_tnc_levelorder_next(c->zroot.znode, NULL);
level = znode->level;
printk(KERN_DEBUG "== Level %d ==\n", level);
while (znode) {
if (level != znode->level) {
level = znode->level;
printk(KERN_DEBUG "== Level %d ==\n", level);
}
dbg_dump_znode(c, znode);
znode = ubifs_tnc_levelorder_next(c->zroot.znode, znode);
}
printk(KERN_DEBUG "(pid %d) finish dumping TNC tree\n", current->pid);
}
static int dump_znode(struct ubifs_info *c, struct ubifs_znode *znode,
void *priv)
{
dbg_dump_znode(c, znode);
return 0;
}
/**
* dbg_dump_index - dump the on-flash index.
* @c: UBIFS file-system description object
*
* This function dumps whole UBIFS indexing B-tree, unlike 'dbg_dump_tnc()'
* which dumps only in-memory znodes and does not read znodes which from flash.
*/
void dbg_dump_index(struct ubifs_info *c)
{
dbg_walk_index(c, NULL, dump_znode, NULL);
}
/**
* dbg_save_space_info - save information about flash space.
* @c: UBIFS file-system description object
*
* This function saves information about UBIFS free space, dirty space, etc, in
* order to check it later.
*/
void dbg_save_space_info(struct ubifs_info *c)
{
struct ubifs_debug_info *d = c->dbg;
ubifs_get_lp_stats(c, &d->saved_lst);
spin_lock(&c->space_lock);
d->saved_free = ubifs_get_free_space_nolock(c);
spin_unlock(&c->space_lock);
}
/**
* dbg_check_space_info - check flash space information.
* @c: UBIFS file-system description object
*
* This function compares current flash space information with the information
* which was saved when the 'dbg_save_space_info()' function was called.
* Returns zero if the information has not changed, and %-EINVAL it it has
* changed.
*/
int dbg_check_space_info(struct ubifs_info *c)
{
struct ubifs_debug_info *d = c->dbg;
struct ubifs_lp_stats lst;
long long avail, free;
spin_lock(&c->space_lock);
avail = ubifs_calc_available(c, c->min_idx_lebs);
spin_unlock(&c->space_lock);
free = ubifs_get_free_space(c);
if (free != d->saved_free) {
ubifs_err("free space changed from %lld to %lld",
d->saved_free, free);
goto out;
}
return 0;
out:
ubifs_msg("saved lprops statistics dump");
dbg_dump_lstats(&d->saved_lst);
ubifs_get_lp_stats(c, &lst);
ubifs_msg("current lprops statistics dump");
dbg_dump_lstats(&d->saved_lst);
spin_lock(&c->space_lock);
dbg_dump_budg(c);
spin_unlock(&c->space_lock);
dump_stack();
return -EINVAL;
}
/**
* dbg_check_synced_i_size - check synchronized inode size.
* @inode: inode to check
*
* If inode is clean, synchronized inode size has to be equivalent to current
* inode size. This function has to be called only for locked inodes (@i_mutex
* has to be locked). Returns %0 if synchronized inode size if correct, and
* %-EINVAL if not.
*/
int dbg_check_synced_i_size(struct inode *inode)
{
int err = 0;
struct ubifs_inode *ui = ubifs_inode(inode);
if (!(ubifs_chk_flags & UBIFS_CHK_GEN))
return 0;
if (!S_ISREG(inode->i_mode))
return 0;
mutex_lock(&ui->ui_mutex);
spin_lock(&ui->ui_lock);
if (ui->ui_size != ui->synced_i_size && !ui->dirty) {
ubifs_err("ui_size is %lld, synced_i_size is %lld, but inode "
"is clean", ui->ui_size, ui->synced_i_size);
ubifs_err("i_ino %lu, i_mode %#x, i_size %lld", inode->i_ino,
inode->i_mode, i_size_read(inode));
dbg_dump_stack();
err = -EINVAL;
}
spin_unlock(&ui->ui_lock);
mutex_unlock(&ui->ui_mutex);
return err;
}
/*
* dbg_check_dir - check directory inode size and link count.
* @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 and link count are 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)
{
unsigned int nlink = 2;
union ubifs_key key;
struct ubifs_dent_node *dent, *pdent = NULL;
struct qstr nm = { .name = NULL };
loff_t size = UBIFS_INO_NODE_SZ;
if (!(ubifs_chk_flags & UBIFS_CHK_GEN))
return 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;
}
nm.name = dent->name;
nm.len = le16_to_cpu(dent->nlen);
size += CALC_DENT_SIZE(nm.len);
if (dent->type == UBIFS_ITYPE_DIR)
nlink += 1;
kfree(pdent);
pdent = dent;