#include "ubifs.h"
#include <linux/module.h>
#include <linux/moduleparam.h>
+#include <linux/debugfs.h>
+#include <linux/math64.h>
#ifdef CONFIG_UBIFS_FS_DEBUG
if (c->key_fmt == UBIFS_SIMPLE_KEY_FMT) {
switch (type) {
case UBIFS_INO_KEY:
- sprintf(p, "(%lu, %s)", key_inum(c, 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)", key_inum(c, 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)", key_inum(c, 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)",
- key_inum(c, key), get_key_type(type));
+ (unsigned long)key_inum(c, key),
+ get_key_type(type));
break;
default:
sprintf(p, "(bad key type: %#08x, %#08x)",
{
const struct ubifs_inode *ui = ubifs_inode(inode);
- printk(KERN_DEBUG "inode %lu\n", inode->i_ino);
- printk(KERN_DEBUG "size %llu\n",
+ 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 "nlink %u\n", inode->i_nlink);
- printk(KERN_DEBUG "uid %u\n", (unsigned int)inode->i_uid);
- printk(KERN_DEBUG "gid %u\n", (unsigned int)inode->i_gid);
- printk(KERN_DEBUG "atime %u.%u\n",
+ 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 "mtime %u.%u\n",
+ printk(KERN_DEBUG "\tmtime %u.%u\n",
(unsigned int)inode->i_mtime.tv_sec,
(unsigned int)inode->i_mtime.tv_nsec);
- printk(KERN_DEBUG "ctime %u.%u\n",
+ printk(KERN_DEBUG "\tctime %u.%u\n",
(unsigned int)inode->i_ctime.tv_sec,
(unsigned int)inode->i_ctime.tv_nsec);
- printk(KERN_DEBUG "creat_sqnum %llu\n", ui->creat_sqnum);
- printk(KERN_DEBUG "xattr_size %u\n", ui->xattr_size);
- printk(KERN_DEBUG "xattr_cnt %u\n", ui->xattr_cnt);
- printk(KERN_DEBUG "xattr_names %u\n", ui->xattr_names);
- printk(KERN_DEBUG "dirty %u\n", ui->dirty);
- printk(KERN_DEBUG "xattr %u\n", ui->xattr);
- printk(KERN_DEBUG "flags %d\n", ui->flags);
- printk(KERN_DEBUG "compr_type %d\n", ui->compr_type);
- printk(KERN_DEBUG "data_len %d\n", ui->data_len);
+ 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)
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 "\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",
"bad or corrupted node)");
else {
for (i = 0; i < nlen && dent->name[i]; i++)
- printk("%c", dent->name[i]);
+ printk(KERN_CONT "%c", dent->name[i]);
}
- printk("\n");
+ printk(KERN_CONT "\n");
break;
}
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->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);
+ /* 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);
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);
}
struct ubifs_lprops lp;
struct ubifs_lp_stats lst;
- printk(KERN_DEBUG "(pid %d) Dumping LEB properties\n", current->pid);
+ printk(KERN_DEBUG "(pid %d) start dumping LEB properties\n",
+ current->pid);
ubifs_get_lp_stats(c, &lst);
dbg_dump_lstats(&lst);
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)
if (dbg_failure_mode)
return;
- printk(KERN_DEBUG "(pid %d) Dumping LEB %d\n", current->pid, lnum);
-
- sleb = ubifs_scan(c, lnum, 0, c->dbg_buf);
+ 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;
dbg_dump_node(c, snod->node);
}
+ printk(KERN_DEBUG "(pid %d) finish dumping LEB %d\n",
+ current->pid, lnum);
ubifs_scan_destroy(sleb);
return;
}
{
int i;
- printk(KERN_DEBUG "(pid %d) Dumping heap cat %d (%d elements)\n",
+ 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];
"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,
{
int i;
- printk(KERN_DEBUG "(pid %d) Dumping pnode:\n", current->pid);
+ 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",
int level;
printk(KERN_DEBUG "\n");
- printk(KERN_DEBUG "(pid %d) Dumping the TNC tree\n", current->pid);
+ 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);
dbg_dump_znode(c, znode);
znode = ubifs_tnc_levelorder_next(c->zroot.znode, znode);
}
-
- printk(KERN_DEBUG "\n");
+ printk(KERN_DEBUG "(pid %d) finish dumping TNC tree\n", current->pid);
}
static int dump_znode(struct ubifs_info *c, struct ubifs_znode *znode,
}
/**
+ * 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
*
zbr1->offs, DBGKEY(&key));
dbg_err("but it should have key %s according to tnc",
DBGKEY(&zbr1->key));
- dbg_dump_node(c, dent1);
- goto out_free;
+ dbg_dump_node(c, dent1);
+ goto out_free;
}
key_read(c, &dent2->key, &key);
zbr1->offs, DBGKEY(&key));
dbg_err("but it should have key %s according to tnc",
DBGKEY(&zbr2->key));
- dbg_dump_node(c, dent2);
- goto out_free;
+ dbg_dump_node(c, dent2);
+ goto out_free;
}
nlen1 = le16_to_cpu(dent1->nlen);
dbg_err("bad order of colliding key %s",
DBGKEY(&key));
- dbg_msg("first node at %d:%d\n", zbr1->lnum, zbr1->offs);
+ ubifs_msg("first node at %d:%d\n", zbr1->lnum, zbr1->offs);
dbg_dump_node(c, dent1);
- dbg_msg("second node at %d:%d\n", zbr2->lnum, zbr2->offs);
+ ubifs_msg("second node at %d:%d\n", zbr2->lnum, zbr2->offs);
dbg_dump_node(c, dent2);
out_free:
/*
* Make sure the last key in our znode is less or
- * equivalent than the the key in zbranch which goes
+ * equivalent than the key in the zbranch which goes
* after our pointing zbranch.
*/
cmp = keys_cmp(c, max,
* @c: UBIFS file-system description object
* @leaf_cb: called for each leaf node
* @znode_cb: called for each indexing node
- * @priv: private date which is passed to callbacks
+ * @priv: private data which is passed to callbacks
*
* This function walks the UBIFS index and calls the @leaf_cb for each leaf
* node and @znode_cb for each indexing node. Returns zero in case of success
if (inum > c->highest_inum) {
ubifs_err("too high inode number, max. is %lu",
- c->highest_inum);
+ (unsigned long)c->highest_inum);
return ERR_PTR(-EINVAL);
}
ino_key_init(c, &key, inum);
err = ubifs_lookup_level0(c, &key, &znode, &n);
if (!err) {
- ubifs_err("inode %lu not found in index", inum);
+ ubifs_err("inode %lu not found in index", (unsigned long)inum);
return ERR_PTR(-ENOENT);
} else if (err < 0) {
- ubifs_err("error %d while looking up inode %lu", err, inum);
+ ubifs_err("error %d while looking up inode %lu",
+ err, (unsigned long)inum);
return ERR_PTR(err);
}
zbr = &znode->zbranch[n];
if (zbr->len < UBIFS_INO_NODE_SZ) {
- ubifs_err("bad node %lu node length %d", inum, zbr->len);
+ ubifs_err("bad node %lu node length %d",
+ (unsigned long)inum, zbr->len);
return ERR_PTR(-EINVAL);
}
kfree(ino);
if (IS_ERR(fscki)) {
ubifs_err("error %ld while adding inode %lu node",
- PTR_ERR(fscki), inum);
+ PTR_ERR(fscki), (unsigned long)inum);
return fscki;
}
if (IS_ERR(fscki)) {
err = PTR_ERR(fscki);
ubifs_err("error %d while processing data node and "
- "trying to find inode node %lu", err, inum);
+ "trying to find inode node %lu",
+ err, (unsigned long)inum);
goto out_dump;
}
if (IS_ERR(fscki)) {
err = PTR_ERR(fscki);
ubifs_err("error %d while processing entry node and "
- "trying to find inode node %lu", err, inum);
+ "trying to find inode node %lu",
+ err, (unsigned long)inum);
goto out_dump;
}
err = PTR_ERR(fscki);
ubifs_err("error %d while processing entry node and "
"trying to find parent inode node %lu",
- err, inum);
+ err, (unsigned long)inum);
goto out_dump;
}
fscki->references != 1) {
ubifs_err("directory inode %lu has %d "
"direntries which refer it, but "
- "should be 1", fscki->inum,
+ "should be 1",
+ (unsigned long)fscki->inum,
fscki->references);
goto out_dump;
}
fscki->references != 0) {
ubifs_err("root inode %lu has non-zero (%d) "
"direntries which refer it",
- fscki->inum, fscki->references);
+ (unsigned long)fscki->inum,
+ fscki->references);
goto out_dump;
}
if (fscki->calc_sz != fscki->size) {
ubifs_err("directory inode %lu size is %lld, "
"but calculated size is %lld",
- fscki->inum, fscki->size,
- fscki->calc_sz);
+ (unsigned long)fscki->inum,
+ fscki->size, fscki->calc_sz);
goto out_dump;
}
if (fscki->calc_cnt != fscki->nlink) {
ubifs_err("directory inode %lu nlink is %d, "
"but calculated nlink is %d",
- fscki->inum, fscki->nlink,
- fscki->calc_cnt);
+ (unsigned long)fscki->inum,
+ fscki->nlink, fscki->calc_cnt);
goto out_dump;
}
} else {
if (fscki->references != fscki->nlink) {
ubifs_err("inode %lu nlink is %d, but "
- "calculated nlink is %d", fscki->inum,
+ "calculated nlink is %d",
+ (unsigned long)fscki->inum,
fscki->nlink, fscki->references);
goto out_dump;
}
if (fscki->xattr_sz != fscki->calc_xsz) {
ubifs_err("inode %lu has xattr size %u, but "
"calculated size is %lld",
- fscki->inum, fscki->xattr_sz,
+ (unsigned long)fscki->inum, fscki->xattr_sz,
fscki->calc_xsz);
goto out_dump;
}
if (fscki->xattr_cnt != fscki->calc_xcnt) {
ubifs_err("inode %lu has %u xattrs, but "
- "calculated count is %lld", fscki->inum,
+ "calculated count is %lld",
+ (unsigned long)fscki->inum,
fscki->xattr_cnt, fscki->calc_xcnt);
goto out_dump;
}
if (fscki->xattr_nms != fscki->calc_xnms) {
ubifs_err("inode %lu has xattr names' size %u, but "
"calculated names' size is %lld",
- fscki->inum, fscki->xattr_nms,
+ (unsigned long)fscki->inum, fscki->xattr_nms,
fscki->calc_xnms);
goto out_dump;
}
ino_key_init(c, &key, fscki->inum);
err = ubifs_lookup_level0(c, &key, &znode, &n);
if (!err) {
- ubifs_err("inode %lu not found in index", fscki->inum);
+ ubifs_err("inode %lu not found in index",
+ (unsigned long)fscki->inum);
return -ENOENT;
} else if (err < 0) {
ubifs_err("error %d while looking up inode %lu",
- err, fscki->inum);
+ err, (unsigned long)fscki->inum);
return err;
}
}
ubifs_msg("dump of the inode %lu sitting in LEB %d:%d",
- fscki->inum, zbr->lnum, zbr->offs);
+ (unsigned long)fscki->inum, zbr->lnum, zbr->offs);
dbg_dump_node(c, ino);
kfree(ino);
return -EINVAL;
return (next >> 16) & 32767;
}
-void dbg_failure_mode_registration(struct ubifs_info *c)
+static void failure_mode_init(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");
+ ubifs_err("Failed to register failure mode - no memory");
return;
}
fmi->c = c;
spin_unlock(&fmi_lock);
}
-void dbg_failure_mode_deregistration(struct ubifs_info *c)
+static void failure_mode_exit(struct ubifs_info *c)
{
struct failure_mode_info *fmi, *tmp;
struct ubifs_info *c = dbg_find_info(desc);
if (c && dbg_failure_mode)
- return c->failure_mode;
+ return c->dbg->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);
+ struct ubifs_debug_info *d;
if (!c || !dbg_failure_mode)
return 0;
- if (c->failure_mode)
+ d = c->dbg;
+ if (d->failure_mode)
return 1;
- if (!c->fail_cnt) {
+ if (!d->fail_cnt) {
/* First call - decide delay to failure */
if (chance(1, 2)) {
unsigned int delay = 1 << (simple_rand() >> 11);
if (chance(1, 2)) {
- c->fail_delay = 1;
- c->fail_timeout = jiffies +
+ d->fail_delay = 1;
+ d->fail_timeout = jiffies +
msecs_to_jiffies(delay);
dbg_rcvry("failing after %ums", delay);
} else {
- c->fail_delay = 2;
- c->fail_cnt_max = delay;
+ d->fail_delay = 2;
+ d->fail_cnt_max = delay;
dbg_rcvry("failing after %u calls", delay);
}
}
- c->fail_cnt += 1;
+ d->fail_cnt += 1;
}
/* Determine if failure delay has expired */
- if (c->fail_delay == 1) {
- if (time_before(jiffies, c->fail_timeout))
+ if (d->fail_delay == 1) {
+ if (time_before(jiffies, d->fail_timeout))
return 0;
- } else if (c->fail_delay == 2)
- if (c->fail_cnt++ < c->fail_cnt_max)
+ } else if (d->fail_delay == 2)
+ if (d->fail_cnt++ < d->fail_cnt_max)
return 0;
if (lnum == UBIFS_SB_LNUM) {
if (write) {
dbg_rcvry("failing in bud LEB %d commit not running", lnum);
}
ubifs_err("*** SETTING FAILURE MODE ON (LEB %d) ***", lnum);
- c->failure_mode = 1;
+ d->failure_mode = 1;
dump_stack();
return 1;
}
return 0;
}
+/**
+ * ubifs_debugging_init - initialize UBIFS debugging.
+ * @c: UBIFS file-system description object
+ *
+ * This function initializes debugging-related data for the file system.
+ * Returns zero in case of success and a negative error code in case of
+ * failure.
+ */
+int ubifs_debugging_init(struct ubifs_info *c)
+{
+ c->dbg = kzalloc(sizeof(struct ubifs_debug_info), GFP_KERNEL);
+ if (!c->dbg)
+ return -ENOMEM;
+
+ c->dbg->buf = vmalloc(c->leb_size);
+ if (!c->dbg->buf)
+ goto out;
+
+ failure_mode_init(c);
+ return 0;
+
+out:
+ kfree(c->dbg);
+ return -ENOMEM;
+}
+
+/**
+ * ubifs_debugging_exit - free debugging data.
+ * @c: UBIFS file-system description object
+ */
+void ubifs_debugging_exit(struct ubifs_info *c)
+{
+ failure_mode_exit(c);
+ vfree(c->dbg->buf);
+ kfree(c->dbg);
+}
+
+/*
+ * Root directory for UBIFS stuff in debugfs. Contains sub-directories which
+ * contain the stuff specific to particular file-system mounts.
+ */
+static struct dentry *dfs_rootdir;
+
+/**
+ * dbg_debugfs_init - initialize debugfs file-system.
+ *
+ * UBIFS uses debugfs file-system to expose various debugging knobs to
+ * user-space. This function creates "ubifs" directory in the debugfs
+ * file-system. Returns zero in case of success and a negative error code in
+ * case of failure.
+ */
+int dbg_debugfs_init(void)
+{
+ dfs_rootdir = debugfs_create_dir("ubifs", NULL);
+ if (IS_ERR(dfs_rootdir)) {
+ int err = PTR_ERR(dfs_rootdir);
+ ubifs_err("cannot create \"ubifs\" debugfs directory, "
+ "error %d\n", err);
+ return err;
+ }
+
+ return 0;
+}
+
+/**
+ * dbg_debugfs_exit - remove the "ubifs" directory from debugfs file-system.
+ */
+void dbg_debugfs_exit(void)
+{
+ debugfs_remove(dfs_rootdir);
+}
+
+static int open_debugfs_file(struct inode *inode, struct file *file)
+{
+ file->private_data = inode->i_private;
+ return 0;
+}
+
+static ssize_t write_debugfs_file(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct ubifs_info *c = file->private_data;
+ struct ubifs_debug_info *d = c->dbg;
+
+ if (file->f_path.dentry == d->dfs_dump_lprops)
+ dbg_dump_lprops(c);
+ else if (file->f_path.dentry == d->dfs_dump_budg) {
+ spin_lock(&c->space_lock);
+ dbg_dump_budg(c);
+ spin_unlock(&c->space_lock);
+ } else if (file->f_path.dentry == d->dfs_dump_tnc) {
+ mutex_lock(&c->tnc_mutex);
+ dbg_dump_tnc(c);
+ mutex_unlock(&c->tnc_mutex);
+ } else
+ return -EINVAL;
+
+ *ppos += count;
+ return count;
+}
+
+static const struct file_operations dfs_fops = {
+ .open = open_debugfs_file,
+ .write = write_debugfs_file,
+ .owner = THIS_MODULE,
+};
+
+/**
+ * dbg_debugfs_init_fs - initialize debugfs for UBIFS instance.
+ * @c: UBIFS file-system description object
+ *
+ * This function creates all debugfs files for this instance of UBIFS. Returns
+ * zero in case of success and a negative error code in case of failure.
+ *
+ * Note, the only reason we have not merged this function with the
+ * 'ubifs_debugging_init()' function is because it is better to initialize
+ * debugfs interfaces at the very end of the mount process, and remove them at
+ * the very beginning of the mount process.
+ */
+int dbg_debugfs_init_fs(struct ubifs_info *c)
+{
+ int err;
+ const char *fname;
+ struct dentry *dent;
+ struct ubifs_debug_info *d = c->dbg;
+
+ sprintf(d->dfs_dir_name, "ubi%d_%d", c->vi.ubi_num, c->vi.vol_id);
+ d->dfs_dir = debugfs_create_dir(d->dfs_dir_name, dfs_rootdir);
+ if (IS_ERR(d->dfs_dir)) {
+ err = PTR_ERR(d->dfs_dir);
+ ubifs_err("cannot create \"%s\" debugfs directory, error %d\n",
+ d->dfs_dir_name, err);
+ goto out;
+ }
+
+ fname = "dump_lprops";
+ dent = debugfs_create_file(fname, S_IWUGO, d->dfs_dir, c, &dfs_fops);
+ if (IS_ERR(dent))
+ goto out_remove;
+ d->dfs_dump_lprops = dent;
+
+ fname = "dump_budg";
+ dent = debugfs_create_file(fname, S_IWUGO, d->dfs_dir, c, &dfs_fops);
+ if (IS_ERR(dent))
+ goto out_remove;
+ d->dfs_dump_budg = dent;
+
+ fname = "dump_tnc";
+ dent = debugfs_create_file(fname, S_IWUGO, d->dfs_dir, c, &dfs_fops);
+ if (IS_ERR(dent))
+ goto out_remove;
+ d->dfs_dump_tnc = dent;
+
+ return 0;
+
+out_remove:
+ err = PTR_ERR(dent);
+ ubifs_err("cannot create \"%s\" debugfs directory, error %d\n",
+ fname, err);
+ debugfs_remove_recursive(d->dfs_dir);
+out:
+ return err;
+}
+
+/**
+ * dbg_debugfs_exit_fs - remove all debugfs files.
+ * @c: UBIFS file-system description object
+ */
+void dbg_debugfs_exit_fs(struct ubifs_info *c)
+{
+ debugfs_remove_recursive(c->dbg->dfs_dir);
+}
+
#endif /* CONFIG_UBIFS_FS_DEBUG */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff