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debug.c
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debug.c
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// SPDX-License-Identifier: GPL-2.0-only
/*
* This file is part of UBIFS.
*
* Copyright (C) 2006-2008 Nokia Corporation
*
* 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.
*/
#include <linux/module.h>
#include <linux/debugfs.h>
#include <linux/math64.h>
#include <linux/uaccess.h>
#include <linux/random.h>
#include <linux/ctype.h>
#include "ubifs.h"
static DEFINE_SPINLOCK(dbg_lock);
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 const char *get_dent_type(int type)
{
switch (type) {
case UBIFS_ITYPE_REG:
return "file";
case UBIFS_ITYPE_DIR:
return "dir";
case UBIFS_ITYPE_LNK:
return "symlink";
case UBIFS_ITYPE_BLK:
return "blkdev";
case UBIFS_ITYPE_CHR:
return "char dev";
case UBIFS_ITYPE_FIFO:
return "fifo";
case UBIFS_ITYPE_SOCK:
return "socket";
default:
return "unknown/invalid type";
}
}
const char *dbg_snprintf_key(const struct ubifs_info *c,
const union ubifs_key *key, char *buffer, int len)
{
char *p = buffer;
int type = key_type(c, key);
if (c->key_fmt == UBIFS_SIMPLE_KEY_FMT) {
switch (type) {
case UBIFS_INO_KEY:
len -= snprintf(p, len, "(%lu, %s)",
(unsigned long)key_inum(c, key),
get_key_type(type));
break;
case UBIFS_DENT_KEY:
case UBIFS_XENT_KEY:
len -= snprintf(p, len, "(%lu, %s, %#08x)",
(unsigned long)key_inum(c, key),
get_key_type(type), key_hash(c, key));
break;
case UBIFS_DATA_KEY:
len -= snprintf(p, len, "(%lu, %s, %u)",
(unsigned long)key_inum(c, key),
get_key_type(type), key_block(c, key));
break;
case UBIFS_TRUN_KEY:
len -= snprintf(p, len, "(%lu, %s)",
(unsigned long)key_inum(c, key),
get_key_type(type));
break;
default:
len -= snprintf(p, len, "(bad key type: %#08x, %#08x)",
key->u32[0], key->u32[1]);
}
} else
len -= snprintf(p, len, "bad key format %d", c->key_fmt);
ubifs_assert(c, len > 0);
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";
case UBIFS_AUTH_NODE:
return "auth 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";
}
}
const char *dbg_jhead(int jhead)
{
switch (jhead) {
case GCHD:
return "0 (GC)";
case BASEHD:
return "1 (base)";
case DATAHD:
return "2 (data)";
default:
return "unknown journal head";
}
}
static void dump_ch(const struct ubifs_ch *ch)
{
pr_err("\tmagic %#x\n", le32_to_cpu(ch->magic));
pr_err("\tcrc %#x\n", le32_to_cpu(ch->crc));
pr_err("\tnode_type %d (%s)\n", ch->node_type,
dbg_ntype(ch->node_type));
pr_err("\tgroup_type %d (%s)\n", ch->group_type,
dbg_gtype(ch->group_type));
pr_err("\tsqnum %llu\n",
(unsigned long long)le64_to_cpu(ch->sqnum));
pr_err("\tlen %u\n", le32_to_cpu(ch->len));
}
void ubifs_dump_inode(struct ubifs_info *c, const struct inode *inode)
{
const struct ubifs_inode *ui = ubifs_inode(inode);
struct fscrypt_name nm = {0};
union ubifs_key key;
struct ubifs_dent_node *dent, *pdent = NULL;
int count = 2;
pr_err("Dump in-memory inode:");
pr_err("\tinode %lu\n", inode->i_ino);
pr_err("\tsize %llu\n",
(unsigned long long)i_size_read(inode));
pr_err("\tnlink %u\n", inode->i_nlink);
pr_err("\tuid %u\n", (unsigned int)i_uid_read(inode));
pr_err("\tgid %u\n", (unsigned int)i_gid_read(inode));
pr_err("\tatime %u.%u\n",
(unsigned int)inode->i_atime.tv_sec,
(unsigned int)inode->i_atime.tv_nsec);
pr_err("\tmtime %u.%u\n",
(unsigned int)inode->i_mtime.tv_sec,
(unsigned int)inode->i_mtime.tv_nsec);
pr_err("\tctime %u.%u\n",
(unsigned int)inode->i_ctime.tv_sec,
(unsigned int)inode->i_ctime.tv_nsec);
pr_err("\tcreat_sqnum %llu\n", ui->creat_sqnum);
pr_err("\txattr_size %u\n", ui->xattr_size);
pr_err("\txattr_cnt %u\n", ui->xattr_cnt);
pr_err("\txattr_names %u\n", ui->xattr_names);
pr_err("\tdirty %u\n", ui->dirty);
pr_err("\txattr %u\n", ui->xattr);
pr_err("\tbulk_read %u\n", ui->bulk_read);
pr_err("\tsynced_i_size %llu\n",
(unsigned long long)ui->synced_i_size);
pr_err("\tui_size %llu\n",
(unsigned long long)ui->ui_size);
pr_err("\tflags %d\n", ui->flags);
pr_err("\tcompr_type %d\n", ui->compr_type);
pr_err("\tlast_page_read %lu\n", ui->last_page_read);
pr_err("\tread_in_a_row %lu\n", ui->read_in_a_row);
pr_err("\tdata_len %d\n", ui->data_len);
if (!S_ISDIR(inode->i_mode))
return;
pr_err("List of directory entries:\n");
ubifs_assert(c, !mutex_is_locked(&c->tnc_mutex));
lowest_dent_key(c, &key, inode->i_ino);
while (1) {
dent = ubifs_tnc_next_ent(c, &key, &nm);
if (IS_ERR(dent)) {
if (PTR_ERR(dent) != -ENOENT)
pr_err("error %ld\n", PTR_ERR(dent));
break;
}
pr_err("\t%d: inode %llu, type %s, len %d\n",
count++, (unsigned long long) le64_to_cpu(dent->inum),
get_dent_type(dent->type),
le16_to_cpu(dent->nlen));
fname_name(&nm) = dent->name;
fname_len(&nm) = le16_to_cpu(dent->nlen);
kfree(pdent);
pdent = dent;
key_read(c, &dent->key, &key);
}
kfree(pdent);
}
void ubifs_dump_node(const struct ubifs_info *c, const void *node)
{
int i, n;
union ubifs_key key;
const struct ubifs_ch *ch = node;
char key_buf[DBG_KEY_BUF_LEN];
/* If the magic is incorrect, just hexdump the first bytes */
if (le32_to_cpu(ch->magic) != UBIFS_NODE_MAGIC) {
pr_err("Not a node, first %zu bytes:", UBIFS_CH_SZ);
print_hex_dump(KERN_ERR, "", 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;
pr_err("\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);
pr_err("\tkey_hash %d (%s)\n",
(int)sup->key_hash, get_key_hash(sup->key_hash));
pr_err("\tkey_fmt %d (%s)\n",
(int)sup->key_fmt, get_key_fmt(sup->key_fmt));
pr_err("\tflags %#x\n", sup_flags);
pr_err("\tbig_lpt %u\n",
!!(sup_flags & UBIFS_FLG_BIGLPT));
pr_err("\tspace_fixup %u\n",
!!(sup_flags & UBIFS_FLG_SPACE_FIXUP));
pr_err("\tmin_io_size %u\n", le32_to_cpu(sup->min_io_size));
pr_err("\tleb_size %u\n", le32_to_cpu(sup->leb_size));
pr_err("\tleb_cnt %u\n", le32_to_cpu(sup->leb_cnt));
pr_err("\tmax_leb_cnt %u\n", le32_to_cpu(sup->max_leb_cnt));
pr_err("\tmax_bud_bytes %llu\n",
(unsigned long long)le64_to_cpu(sup->max_bud_bytes));
pr_err("\tlog_lebs %u\n", le32_to_cpu(sup->log_lebs));
pr_err("\tlpt_lebs %u\n", le32_to_cpu(sup->lpt_lebs));
pr_err("\torph_lebs %u\n", le32_to_cpu(sup->orph_lebs));
pr_err("\tjhead_cnt %u\n", le32_to_cpu(sup->jhead_cnt));
pr_err("\tfanout %u\n", le32_to_cpu(sup->fanout));
pr_err("\tlsave_cnt %u\n", le32_to_cpu(sup->lsave_cnt));
pr_err("\tdefault_compr %u\n",
(int)le16_to_cpu(sup->default_compr));
pr_err("\trp_size %llu\n",
(unsigned long long)le64_to_cpu(sup->rp_size));
pr_err("\trp_uid %u\n", le32_to_cpu(sup->rp_uid));
pr_err("\trp_gid %u\n", le32_to_cpu(sup->rp_gid));
pr_err("\tfmt_version %u\n", le32_to_cpu(sup->fmt_version));
pr_err("\ttime_gran %u\n", le32_to_cpu(sup->time_gran));
pr_err("\tUUID %pUB\n", sup->uuid);
break;
}
case UBIFS_MST_NODE:
{
const struct ubifs_mst_node *mst = node;
pr_err("\thighest_inum %llu\n",
(unsigned long long)le64_to_cpu(mst->highest_inum));
pr_err("\tcommit number %llu\n",
(unsigned long long)le64_to_cpu(mst->cmt_no));
pr_err("\tflags %#x\n", le32_to_cpu(mst->flags));
pr_err("\tlog_lnum %u\n", le32_to_cpu(mst->log_lnum));
pr_err("\troot_lnum %u\n", le32_to_cpu(mst->root_lnum));
pr_err("\troot_offs %u\n", le32_to_cpu(mst->root_offs));
pr_err("\troot_len %u\n", le32_to_cpu(mst->root_len));
pr_err("\tgc_lnum %u\n", le32_to_cpu(mst->gc_lnum));
pr_err("\tihead_lnum %u\n", le32_to_cpu(mst->ihead_lnum));
pr_err("\tihead_offs %u\n", le32_to_cpu(mst->ihead_offs));
pr_err("\tindex_size %llu\n",
(unsigned long long)le64_to_cpu(mst->index_size));
pr_err("\tlpt_lnum %u\n", le32_to_cpu(mst->lpt_lnum));
pr_err("\tlpt_offs %u\n", le32_to_cpu(mst->lpt_offs));
pr_err("\tnhead_lnum %u\n", le32_to_cpu(mst->nhead_lnum));
pr_err("\tnhead_offs %u\n", le32_to_cpu(mst->nhead_offs));
pr_err("\tltab_lnum %u\n", le32_to_cpu(mst->ltab_lnum));
pr_err("\tltab_offs %u\n", le32_to_cpu(mst->ltab_offs));
pr_err("\tlsave_lnum %u\n", le32_to_cpu(mst->lsave_lnum));
pr_err("\tlsave_offs %u\n", le32_to_cpu(mst->lsave_offs));
pr_err("\tlscan_lnum %u\n", le32_to_cpu(mst->lscan_lnum));
pr_err("\tleb_cnt %u\n", le32_to_cpu(mst->leb_cnt));
pr_err("\tempty_lebs %u\n", le32_to_cpu(mst->empty_lebs));
pr_err("\tidx_lebs %u\n", le32_to_cpu(mst->idx_lebs));
pr_err("\ttotal_free %llu\n",
(unsigned long long)le64_to_cpu(mst->total_free));
pr_err("\ttotal_dirty %llu\n",
(unsigned long long)le64_to_cpu(mst->total_dirty));
pr_err("\ttotal_used %llu\n",
(unsigned long long)le64_to_cpu(mst->total_used));
pr_err("\ttotal_dead %llu\n",
(unsigned long long)le64_to_cpu(mst->total_dead));
pr_err("\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;
pr_err("\tlnum %u\n", le32_to_cpu(ref->lnum));
pr_err("\toffs %u\n", le32_to_cpu(ref->offs));
pr_err("\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);
pr_err("\tkey %s\n",
dbg_snprintf_key(c, &key, key_buf, DBG_KEY_BUF_LEN));
pr_err("\tcreat_sqnum %llu\n",
(unsigned long long)le64_to_cpu(ino->creat_sqnum));
pr_err("\tsize %llu\n",
(unsigned long long)le64_to_cpu(ino->size));
pr_err("\tnlink %u\n", le32_to_cpu(ino->nlink));
pr_err("\tatime %lld.%u\n",
(long long)le64_to_cpu(ino->atime_sec),
le32_to_cpu(ino->atime_nsec));
pr_err("\tmtime %lld.%u\n",
(long long)le64_to_cpu(ino->mtime_sec),
le32_to_cpu(ino->mtime_nsec));
pr_err("\tctime %lld.%u\n",
(long long)le64_to_cpu(ino->ctime_sec),
le32_to_cpu(ino->ctime_nsec));
pr_err("\tuid %u\n", le32_to_cpu(ino->uid));
pr_err("\tgid %u\n", le32_to_cpu(ino->gid));
pr_err("\tmode %u\n", le32_to_cpu(ino->mode));
pr_err("\tflags %#x\n", le32_to_cpu(ino->flags));
pr_err("\txattr_cnt %u\n", le32_to_cpu(ino->xattr_cnt));
pr_err("\txattr_size %u\n", le32_to_cpu(ino->xattr_size));
pr_err("\txattr_names %u\n", le32_to_cpu(ino->xattr_names));
pr_err("\tcompr_type %#x\n",
(int)le16_to_cpu(ino->compr_type));
pr_err("\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);
pr_err("\tkey %s\n",
dbg_snprintf_key(c, &key, key_buf, DBG_KEY_BUF_LEN));
pr_err("\tinum %llu\n",
(unsigned long long)le64_to_cpu(dent->inum));
pr_err("\ttype %d\n", (int)dent->type);
pr_err("\tnlen %d\n", nlen);
pr_err("\tname ");
if (nlen > UBIFS_MAX_NLEN)
pr_err("(bad name length, not printing, bad or corrupted node)");
else {
for (i = 0; i < nlen && dent->name[i]; i++)
pr_cont("%c", isprint(dent->name[i]) ?
dent->name[i] : '?');
}
pr_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);
pr_err("\tkey %s\n",
dbg_snprintf_key(c, &key, key_buf, DBG_KEY_BUF_LEN));
pr_err("\tsize %u\n", le32_to_cpu(dn->size));
pr_err("\tcompr_typ %d\n",
(int)le16_to_cpu(dn->compr_type));
pr_err("\tdata size %d\n", dlen);
pr_err("\tdata:\n");
print_hex_dump(KERN_ERR, "\t", DUMP_PREFIX_OFFSET, 32, 1,
(void *)&dn->data, dlen, 0);
break;
}
case UBIFS_TRUN_NODE:
{
const struct ubifs_trun_node *trun = node;
pr_err("\tinum %u\n", le32_to_cpu(trun->inum));
pr_err("\told_size %llu\n",
(unsigned long long)le64_to_cpu(trun->old_size));
pr_err("\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);
pr_err("\tchild_cnt %d\n", n);
pr_err("\tlevel %d\n", (int)le16_to_cpu(idx->level));
pr_err("\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);
pr_err("\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),
dbg_snprintf_key(c, &key, key_buf,
DBG_KEY_BUF_LEN));
}
break;
}
case UBIFS_CS_NODE:
break;
case UBIFS_ORPH_NODE:
{
const struct ubifs_orph_node *orph = node;
pr_err("\tcommit number %llu\n",
(unsigned long long)
le64_to_cpu(orph->cmt_no) & LLONG_MAX);
pr_err("\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;
pr_err("\t%d orphan inode numbers:\n", n);
for (i = 0; i < n; i++)
pr_err("\t ino %llu\n",
(unsigned long long)le64_to_cpu(orph->inos[i]));
break;
}
case UBIFS_AUTH_NODE:
{
break;
}
default:
pr_err("node type %d was not recognized\n",
(int)ch->node_type);
}
spin_unlock(&dbg_lock);
}
void ubifs_dump_budget_req(const struct ubifs_budget_req *req)
{
spin_lock(&dbg_lock);
pr_err("Budgeting request: new_ino %d, dirtied_ino %d\n",
req->new_ino, req->dirtied_ino);
pr_err("\tnew_ino_d %d, dirtied_ino_d %d\n",
req->new_ino_d, req->dirtied_ino_d);
pr_err("\tnew_page %d, dirtied_page %d\n",
req->new_page, req->dirtied_page);
pr_err("\tnew_dent %d, mod_dent %d\n",
req->new_dent, req->mod_dent);
pr_err("\tidx_growth %d\n", req->idx_growth);
pr_err("\tdata_growth %d dd_growth %d\n",
req->data_growth, req->dd_growth);
spin_unlock(&dbg_lock);
}
void ubifs_dump_lstats(const struct ubifs_lp_stats *lst)
{
spin_lock(&dbg_lock);
pr_err("(pid %d) Lprops statistics: empty_lebs %d, idx_lebs %d\n",
current->pid, lst->empty_lebs, lst->idx_lebs);
pr_err("\ttaken_empty_lebs %d, total_free %lld, total_dirty %lld\n",
lst->taken_empty_lebs, lst->total_free, lst->total_dirty);
pr_err("\ttotal_used %lld, total_dark %lld, total_dead %lld\n",
lst->total_used, lst->total_dark, lst->total_dead);
spin_unlock(&dbg_lock);
}
void ubifs_dump_budg(struct ubifs_info *c, const struct ubifs_budg_info *bi)
{
int i;
struct rb_node *rb;
struct ubifs_bud *bud;
struct ubifs_gced_idx_leb *idx_gc;
long long available, outstanding, free;
spin_lock(&c->space_lock);
spin_lock(&dbg_lock);
pr_err("(pid %d) Budgeting info: data budget sum %lld, total budget sum %lld\n",
current->pid, bi->data_growth + bi->dd_growth,
bi->data_growth + bi->dd_growth + bi->idx_growth);
pr_err("\tbudg_data_growth %lld, budg_dd_growth %lld, budg_idx_growth %lld\n",
bi->data_growth, bi->dd_growth, bi->idx_growth);
pr_err("\tmin_idx_lebs %d, old_idx_sz %llu, uncommitted_idx %lld\n",
bi->min_idx_lebs, bi->old_idx_sz, bi->uncommitted_idx);
pr_err("\tpage_budget %d, inode_budget %d, dent_budget %d\n",
bi->page_budget, bi->inode_budget, bi->dent_budget);
pr_err("\tnospace %u, nospace_rp %u\n", bi->nospace, bi->nospace_rp);
pr_err("\tdark_wm %d, dead_wm %d, max_idx_node_sz %d\n",
c->dark_wm, c->dead_wm, c->max_idx_node_sz);
if (bi != &c->bi)
/*
* If we are dumping saved budgeting data, do not print
* additional information which is about the current state, not
* the old one which corresponded to the saved budgeting data.
*/
goto out_unlock;
pr_err("\tfreeable_cnt %d, calc_idx_sz %lld, idx_gc_cnt %d\n",
c->freeable_cnt, c->calc_idx_sz, c->idx_gc_cnt);
pr_err("\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));
pr_err("\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++)
pr_err("\tjhead %s\t LEB %d\n",
dbg_jhead(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);
pr_err("\tbud LEB %d\n", bud->lnum);
}
list_for_each_entry(bud, &c->old_buds, list)
pr_err("\told bud LEB %d\n", bud->lnum);
list_for_each_entry(idx_gc, &c->idx_gc, list)
pr_err("\tGC'ed idx LEB %d unmap %d\n",
idx_gc->lnum, idx_gc->unmap);
pr_err("\tcommit state %d\n", c->cmt_state);
/* Print budgeting predictions */
available = ubifs_calc_available(c, c->bi.min_idx_lebs);
outstanding = c->bi.data_growth + c->bi.dd_growth;
free = ubifs_get_free_space_nolock(c);
pr_err("Budgeting predictions:\n");
pr_err("\tavailable: %lld, outstanding %lld, free %lld\n",
available, outstanding, free);
out_unlock:
spin_unlock(&dbg_lock);
spin_unlock(&c->space_lock);
}
void ubifs_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp)
{
int i, spc, dark = 0, dead = 0;
struct rb_node *rb;
struct ubifs_bud *bud;
spc = lp->free + lp->dirty;
if (spc < c->dead_wm)
dead = spc;
else
dark = ubifs_calc_dark(c, spc);
if (lp->flags & LPROPS_INDEX)
pr_err("LEB %-7d free %-8d dirty %-8d used %-8d free + dirty %-8d flags %#x (",
lp->lnum, lp->free, lp->dirty, c->leb_size - spc, spc,
lp->flags);
else
pr_err("LEB %-7d free %-8d dirty %-8d used %-8d free + dirty %-8d dark %-4d dead %-4d nodes fit %-3d flags %#-4x (",
lp->lnum, lp->free, lp->dirty, c->leb_size - spc, spc,
dark, dead, (int)(spc / UBIFS_MAX_NODE_SZ), lp->flags);
if (lp->flags & LPROPS_TAKEN) {
if (lp->flags & LPROPS_INDEX)
pr_cont("index, taken");
else
pr_cont("taken");
} else {
const char *s;
if (lp->flags & LPROPS_INDEX) {
switch (lp->flags & LPROPS_CAT_MASK) {
case LPROPS_DIRTY_IDX:
s = "dirty index";
break;
case LPROPS_FRDI_IDX:
s = "freeable index";
break;
default:
s = "index";
}
} else {
switch (lp->flags & LPROPS_CAT_MASK) {
case LPROPS_UNCAT:
s = "not categorized";
break;
case LPROPS_DIRTY:
s = "dirty";
break;
case LPROPS_FREE:
s = "free";
break;
case LPROPS_EMPTY:
s = "empty";
break;
case LPROPS_FREEABLE:
s = "freeable";
break;
default:
s = NULL;
break;
}
}
pr_cont("%s", s);
}
for (rb = rb_first((struct rb_root *)&c->buds); rb; rb = rb_next(rb)) {
bud = rb_entry(rb, struct ubifs_bud, rb);
if (bud->lnum == lp->lnum) {
int head = 0;
for (i = 0; i < c->jhead_cnt; i++) {
/*
* Note, if we are in R/O mode or in the middle
* of mounting/re-mounting, the write-buffers do
* not exist.
*/
if (c->jheads &&
lp->lnum == c->jheads[i].wbuf.lnum) {
pr_cont(", jhead %s", dbg_jhead(i));
head = 1;
}
}
if (!head)
pr_cont(", bud of jhead %s",
dbg_jhead(bud->jhead));
}
}
if (lp->lnum == c->gc_lnum)
pr_cont(", GC LEB");
pr_cont(")\n");
}
void ubifs_dump_lprops(struct ubifs_info *c)
{
int lnum, err;
struct ubifs_lprops lp;
struct ubifs_lp_stats lst;
pr_err("(pid %d) start dumping LEB properties\n", current->pid);
ubifs_get_lp_stats(c, &lst);
ubifs_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(c, "cannot read lprops for LEB %d", lnum);
continue;
}
ubifs_dump_lprop(c, &lp);
}
pr_err("(pid %d) finish dumping LEB properties\n", current->pid);
}
void ubifs_dump_lpt_info(struct ubifs_info *c)
{
int i;
spin_lock(&dbg_lock);
pr_err("(pid %d) dumping LPT information\n", current->pid);
pr_err("\tlpt_sz: %lld\n", c->lpt_sz);
pr_err("\tpnode_sz: %d\n", c->pnode_sz);
pr_err("\tnnode_sz: %d\n", c->nnode_sz);
pr_err("\tltab_sz: %d\n", c->ltab_sz);
pr_err("\tlsave_sz: %d\n", c->lsave_sz);
pr_err("\tbig_lpt: %d\n", c->big_lpt);
pr_err("\tlpt_hght: %d\n", c->lpt_hght);
pr_err("\tpnode_cnt: %d\n", c->pnode_cnt);
pr_err("\tnnode_cnt: %d\n", c->nnode_cnt);
pr_err("\tdirty_pn_cnt: %d\n", c->dirty_pn_cnt);
pr_err("\tdirty_nn_cnt: %d\n", c->dirty_nn_cnt);
pr_err("\tlsave_cnt: %d\n", c->lsave_cnt);
pr_err("\tspace_bits: %d\n", c->space_bits);
pr_err("\tlpt_lnum_bits: %d\n", c->lpt_lnum_bits);
pr_err("\tlpt_offs_bits: %d\n", c->lpt_offs_bits);
pr_err("\tlpt_spc_bits: %d\n", c->lpt_spc_bits);
pr_err("\tpcnt_bits: %d\n", c->pcnt_bits);
pr_err("\tlnum_bits: %d\n", c->lnum_bits);
pr_err("\tLPT root is at %d:%d\n", c->lpt_lnum, c->lpt_offs);
pr_err("\tLPT head is at %d:%d\n",
c->nhead_lnum, c->nhead_offs);
pr_err("\tLPT ltab is at %d:%d\n", c->ltab_lnum, c->ltab_offs);
if (c->big_lpt)
pr_err("\tLPT lsave is at %d:%d\n",
c->lsave_lnum, c->lsave_offs);
for (i = 0; i < c->lpt_lebs; i++)
pr_err("\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 ubifs_dump_sleb(const struct ubifs_info *c,
const struct ubifs_scan_leb *sleb, int offs)
{
struct ubifs_scan_node *snod;
pr_err("(pid %d) start dumping scanned data from LEB %d:%d\n",
current->pid, sleb->lnum, offs);
list_for_each_entry(snod, &sleb->nodes, list) {
cond_resched();
pr_err("Dumping node at LEB %d:%d len %d\n",
sleb->lnum, snod->offs, snod->len);
ubifs_dump_node(c, snod->node);
}
}
void ubifs_dump_leb(const struct ubifs_info *c, int lnum)
{
struct ubifs_scan_leb *sleb;
struct ubifs_scan_node *snod;
void *buf;
pr_err("(pid %d) start dumping LEB %d\n", current->pid, lnum);
buf = __vmalloc(c->leb_size, GFP_NOFS, PAGE_KERNEL);
if (!buf) {
ubifs_err(c, "cannot allocate memory for dumping LEB %d", lnum);
return;
}
sleb = ubifs_scan(c, lnum, 0, buf, 0);
if (IS_ERR(sleb)) {
ubifs_err(c, "scan error %d", (int)PTR_ERR(sleb));
goto out;
}
pr_err("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();
pr_err("Dumping node at LEB %d:%d len %d\n", lnum,
snod->offs, snod->len);
ubifs_dump_node(c, snod->node);
}
pr_err("(pid %d) finish dumping LEB %d\n", current->pid, lnum);
ubifs_scan_destroy(sleb);
out:
vfree(buf);
return;
}
void ubifs_dump_znode(const struct ubifs_info *c,
const struct ubifs_znode *znode)
{
int n;
const struct ubifs_zbranch *zbr;
char key_buf[DBG_KEY_BUF_LEN];
spin_lock(&dbg_lock);
if (znode->parent)
zbr = &znode->parent->zbranch[znode->iip];
else
zbr = &c->zroot;
pr_err("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;
}
pr_err("zbranches:\n");
for (n = 0; n < znode->child_cnt; n++) {
zbr = &znode->zbranch[n];
if (znode->level > 0)
pr_err("\t%d: znode %p LEB %d:%d len %d key %s\n",
n, zbr->znode, zbr->lnum, zbr->offs, zbr->len,
dbg_snprintf_key(c, &zbr->key, key_buf,
DBG_KEY_BUF_LEN));
else
pr_err("\t%d: LNC %p LEB %d:%d len %d key %s\n",
n, zbr->znode, zbr->lnum, zbr->offs, zbr->len,
dbg_snprintf_key(c, &zbr->key, key_buf,
DBG_KEY_BUF_LEN));
}
spin_unlock(&dbg_lock);
}
void ubifs_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat)
{
int i;
pr_err("(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];
pr_err("\t%d. LEB %d hpos %d free %d dirty %d flags %d\n",
i, lprops->lnum, lprops->hpos, lprops->free,
lprops->dirty, lprops->flags);
}
pr_err("(pid %d) finish dumping heap\n", current->pid);
}
void ubifs_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
struct ubifs_nnode *parent, int iip)
{
int i;
pr_err("(pid %d) dumping pnode:\n", current->pid);
pr_err("\taddress %zx parent %zx cnext %zx\n",
(size_t)pnode, (size_t)parent, (size_t)pnode->cnext);
pr_err("\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];
pr_err("\t%d: free %d dirty %d flags %d lnum %d\n",
i, lp->free, lp->dirty, lp->flags, lp->lnum);
}
}
void ubifs_dump_tnc(struct ubifs_info *c)
{
struct ubifs_znode *znode;
int level;
pr_err("\n");
pr_err("(pid %d) start dumping TNC tree\n", current->pid);
znode = ubifs_tnc_levelorder_next(c, c->zroot.znode, NULL);
level = znode->level;
pr_err("== Level %d ==\n", level);
while (znode) {
if (level != znode->level) {
level = znode->level;
pr_err("== Level %d ==\n", level);
}
ubifs_dump_znode(c, znode);
znode = ubifs_tnc_levelorder_next(c, c->zroot.znode, znode);
}
pr_err("(pid %d) finish dumping TNC tree\n", current->pid);
}
static int dump_znode(struct ubifs_info *c, struct ubifs_znode *znode,
void *priv)
{
ubifs_dump_znode(c, znode);
return 0;
}
/**
* ubifs_dump_index - dump the on-flash index.
* @c: UBIFS file-system description object
*
* This function dumps whole UBIFS indexing B-tree, unlike 'ubifs_dump_tnc()'
* which dumps only in-memory znodes and does not read znodes which from flash.
*/
void ubifs_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;
int freeable_cnt;
spin_lock(&c->space_lock);
memcpy(&d->saved_lst, &c->lst, sizeof(struct ubifs_lp_stats));
memcpy(&d->saved_bi, &c->bi, sizeof(struct ubifs_budg_info));
d->saved_idx_gc_cnt = c->idx_gc_cnt;
/*
* We use a dirty hack here and zero out @c->freeable_cnt, because it
* affects the free space calculations, and UBIFS might not know about
* all freeable eraseblocks. Indeed, we know about freeable eraseblocks
* only when we read their lprops, and we do this only lazily, upon the
* need. So at any given point of time @c->freeable_cnt might be not
* exactly accurate.
*
* Just one example about the issue we hit when we did not zero
* @c->freeable_cnt.
* 1. The file-system is mounted R/O, c->freeable_cnt is %0. We save the
* amount of free space in @d->saved_free
* 2. We re-mount R/W, which makes UBIFS to read the "lsave"
* information from flash, where we cache LEBs from various
* categories ('ubifs_remount_fs()' -> 'ubifs_lpt_init()'
* -> 'lpt_init_wr()' -> 'read_lsave()' -> 'ubifs_lpt_lookup()'
* -> 'ubifs_get_pnode()' -> 'update_cats()'
* -> 'ubifs_add_to_cat()').
* 3. Lsave contains a freeable eraseblock, and @c->freeable_cnt
* becomes %1.
* 4. We calculate the amount of free space when the re-mount is
* finished in 'dbg_check_space_info()' and it does not match
* @d->saved_free.