* an empty LEB for the journal, or a very dirty LEB for garbage collection.
*/
+#include "linux_err.h"
+#include "bitops.h"
+#include "kmem.h"
#include "ubifs.h"
+#include "defs.h"
+#include "debug.h"
+#include "misc.h"
/**
* get_heap_comp_val - get the LEB properties value for heap comparisons.
* is either the amount of free space or the amount of dirty space, depending
* on the category.
*/
-static void move_up_lpt_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap,
+static void move_up_lpt_heap(__unused struct ubifs_info *c,
+ struct ubifs_lpt_heap *heap,
struct ubifs_lprops *lprops, int cat)
{
int val1, val2, hpos;
* greater. In the case of LPT's category heaps, the value is either the amount
* of free space or the amount of dirty space, depending on the category.
*/
-static void adjust_lpt_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap,
+static void adjust_lpt_heap(__unused struct ubifs_info *c,
+ struct ubifs_lpt_heap *heap,
struct ubifs_lprops *lprops, int hpos, int cat)
{
int val1, val2, val3, cpos;
lprops->hpos = cpos;
heap->arr[cpos] = lprops;
move_up_lpt_heap(c, heap, lprops, cat);
- dbg_check_heap(c, heap, cat, lprops->hpos);
return 1; /* Added to heap */
}
- dbg_check_heap(c, heap, cat, -1);
return 0; /* Not added to heap */
} else {
lprops->hpos = heap->cnt++;
heap->arr[lprops->hpos] = lprops;
move_up_lpt_heap(c, heap, lprops, cat);
- dbg_check_heap(c, heap, cat, lprops->hpos);
return 1; /* Added to heap */
}
}
heap->arr[hpos]->hpos = hpos;
adjust_lpt_heap(c, heap, heap->arr[hpos], hpos, cat);
}
- dbg_check_heap(c, heap, cat, -1);
}
/**
ubifs_assert(c, lprops->free + lprops->dirty == c->leb_size);
return lprops;
}
-
-/*
- * Everything below is related to debugging.
- */
-
-/**
- * dbg_check_cats - check category heaps and lists.
- * @c: UBIFS file-system description object
- *
- * This function returns %0 on success and a negative error code on failure.
- */
-int dbg_check_cats(struct ubifs_info *c)
-{
- struct ubifs_lprops *lprops;
- struct list_head *pos;
- int i, cat;
-
- if (!dbg_is_chk_gen(c) && !dbg_is_chk_lprops(c))
- return 0;
-
- list_for_each_entry(lprops, &c->empty_list, list) {
- if (lprops->free != c->leb_size) {
- ubifs_err(c, "non-empty LEB %d on empty list (free %d dirty %d flags %d)",
- lprops->lnum, lprops->free, lprops->dirty,
- lprops->flags);
- return -EINVAL;
- }
- if (lprops->flags & LPROPS_TAKEN) {
- ubifs_err(c, "taken LEB %d on empty list (free %d dirty %d flags %d)",
- lprops->lnum, lprops->free, lprops->dirty,
- lprops->flags);
- return -EINVAL;
- }
- }
-
- i = 0;
- list_for_each_entry(lprops, &c->freeable_list, list) {
- if (lprops->free + lprops->dirty != c->leb_size) {
- ubifs_err(c, "non-freeable LEB %d on freeable list (free %d dirty %d flags %d)",
- lprops->lnum, lprops->free, lprops->dirty,
- lprops->flags);
- return -EINVAL;
- }
- if (lprops->flags & LPROPS_TAKEN) {
- ubifs_err(c, "taken LEB %d on freeable list (free %d dirty %d flags %d)",
- lprops->lnum, lprops->free, lprops->dirty,
- lprops->flags);
- return -EINVAL;
- }
- i += 1;
- }
- if (i != c->freeable_cnt) {
- ubifs_err(c, "freeable list count %d expected %d", i,
- c->freeable_cnt);
- return -EINVAL;
- }
-
- i = 0;
- list_for_each(pos, &c->idx_gc)
- i += 1;
- if (i != c->idx_gc_cnt) {
- ubifs_err(c, "idx_gc list count %d expected %d", i,
- c->idx_gc_cnt);
- return -EINVAL;
- }
-
- list_for_each_entry(lprops, &c->frdi_idx_list, list) {
- if (lprops->free + lprops->dirty != c->leb_size) {
- ubifs_err(c, "non-freeable LEB %d on frdi_idx list (free %d dirty %d flags %d)",
- lprops->lnum, lprops->free, lprops->dirty,
- lprops->flags);
- return -EINVAL;
- }
- if (lprops->flags & LPROPS_TAKEN) {
- ubifs_err(c, "taken LEB %d on frdi_idx list (free %d dirty %d flags %d)",
- lprops->lnum, lprops->free, lprops->dirty,
- lprops->flags);
- return -EINVAL;
- }
- if (!(lprops->flags & LPROPS_INDEX)) {
- ubifs_err(c, "non-index LEB %d on frdi_idx list (free %d dirty %d flags %d)",
- lprops->lnum, lprops->free, lprops->dirty,
- lprops->flags);
- return -EINVAL;
- }
- }
-
- for (cat = 1; cat <= LPROPS_HEAP_CNT; cat++) {
- struct ubifs_lpt_heap *heap = &c->lpt_heap[cat - 1];
-
- for (i = 0; i < heap->cnt; i++) {
- lprops = heap->arr[i];
- if (!lprops) {
- ubifs_err(c, "null ptr in LPT heap cat %d", cat);
- return -EINVAL;
- }
- if (lprops->hpos != i) {
- ubifs_err(c, "bad ptr in LPT heap cat %d", cat);
- return -EINVAL;
- }
- if (lprops->flags & LPROPS_TAKEN) {
- ubifs_err(c, "taken LEB in LPT heap cat %d", cat);
- return -EINVAL;
- }
- }
- }
-
- return 0;
-}
-
-void dbg_check_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat,
- int add_pos)
-{
- int i = 0, j, err = 0;
-
- if (!dbg_is_chk_gen(c) && !dbg_is_chk_lprops(c))
- return;
-
- for (i = 0; i < heap->cnt; i++) {
- struct ubifs_lprops *lprops = heap->arr[i];
- struct ubifs_lprops *lp;
-
- if (i != add_pos)
- if ((lprops->flags & LPROPS_CAT_MASK) != cat) {
- err = 1;
- goto out;
- }
- if (lprops->hpos != i) {
- err = 2;
- goto out;
- }
- lp = ubifs_lpt_lookup(c, lprops->lnum);
- if (IS_ERR(lp)) {
- err = 3;
- goto out;
- }
- if (lprops != lp) {
- ubifs_err(c, "lprops %zx lp %zx lprops->lnum %d lp->lnum %d",
- (size_t)lprops, (size_t)lp, lprops->lnum,
- lp->lnum);
- err = 4;
- goto out;
- }
- for (j = 0; j < i; j++) {
- lp = heap->arr[j];
- if (lp == lprops) {
- err = 5;
- goto out;
- }
- if (lp->lnum == lprops->lnum) {
- err = 6;
- goto out;
- }
- }
- }
-out:
- if (err) {
- ubifs_err(c, "failed cat %d hpos %d err %d", cat, i, err);
- dump_stack();
- ubifs_dump_heap(c, heap, cat);
- }
-}
-
-/**
- * scan_check_cb - scan callback.
- * @c: the UBIFS file-system description object
- * @lp: LEB properties to scan
- * @in_tree: whether the LEB properties are in main memory
- * @lst: lprops statistics to update
- *
- * This function returns a code that indicates whether the scan should continue
- * (%LPT_SCAN_CONTINUE), whether the LEB properties should be added to the tree
- * in main memory (%LPT_SCAN_ADD), or whether the scan should stop
- * (%LPT_SCAN_STOP).
- */
-static int scan_check_cb(struct ubifs_info *c,
- const struct ubifs_lprops *lp, int in_tree,
- struct ubifs_lp_stats *lst)
-{
- struct ubifs_scan_leb *sleb;
- struct ubifs_scan_node *snod;
- int cat, lnum = lp->lnum, is_idx = 0, used = 0, free, dirty, ret;
- void *buf = NULL;
-
- cat = lp->flags & LPROPS_CAT_MASK;
- if (cat != LPROPS_UNCAT) {
- cat = ubifs_categorize_lprops(c, lp);
- if (cat != (lp->flags & LPROPS_CAT_MASK)) {
- ubifs_err(c, "bad LEB category %d expected %d",
- (lp->flags & LPROPS_CAT_MASK), cat);
- return -EINVAL;
- }
- }
-
- /* Check lp is on its category list (if it has one) */
- if (in_tree) {
- struct list_head *list = NULL;
-
- switch (cat) {
- case LPROPS_EMPTY:
- list = &c->empty_list;
- break;
- case LPROPS_FREEABLE:
- list = &c->freeable_list;
- break;
- case LPROPS_FRDI_IDX:
- list = &c->frdi_idx_list;
- break;
- case LPROPS_UNCAT:
- list = &c->uncat_list;
- break;
- }
- if (list) {
- struct ubifs_lprops *lprops;
- int found = 0;
-
- list_for_each_entry(lprops, list, list) {
- if (lprops == lp) {
- found = 1;
- break;
- }
- }
- if (!found) {
- ubifs_err(c, "bad LPT list (category %d)", cat);
- return -EINVAL;
- }
- }
- }
-
- /* Check lp is on its category heap (if it has one) */
- if (in_tree && cat > 0 && cat <= LPROPS_HEAP_CNT) {
- struct ubifs_lpt_heap *heap = &c->lpt_heap[cat - 1];
-
- if ((lp->hpos != -1 && heap->arr[lp->hpos]->lnum != lnum) ||
- lp != heap->arr[lp->hpos]) {
- ubifs_err(c, "bad LPT heap (category %d)", cat);
- return -EINVAL;
- }
- }
-
- /*
- * After an unclean unmount, empty and freeable LEBs
- * may contain garbage - do not scan them.
- */
- if (lp->free == c->leb_size) {
- lst->empty_lebs += 1;
- lst->total_free += c->leb_size;
- lst->total_dark += ubifs_calc_dark(c, c->leb_size);
- return LPT_SCAN_CONTINUE;
- }
- if (lp->free + lp->dirty == c->leb_size &&
- !(lp->flags & LPROPS_INDEX)) {
- lst->total_free += lp->free;
- lst->total_dirty += lp->dirty;
- lst->total_dark += ubifs_calc_dark(c, c->leb_size);
- return LPT_SCAN_CONTINUE;
- }
-
- buf = __vmalloc(c->leb_size, GFP_NOFS);
- if (!buf)
- return -ENOMEM;
-
- sleb = ubifs_scan(c, lnum, 0, buf, 0);
- if (IS_ERR(sleb)) {
- ret = PTR_ERR(sleb);
- if (ret == -EUCLEAN) {
- ubifs_dump_lprops(c);
- ubifs_dump_budg(c, &c->bi);
- }
- goto out;
- }
-
- is_idx = -1;
- list_for_each_entry(snod, &sleb->nodes, list) {
- int found, level = 0;
-
- cond_resched();
-
- if (is_idx == -1)
- is_idx = (snod->type == UBIFS_IDX_NODE) ? 1 : 0;
-
- if (is_idx && snod->type != UBIFS_IDX_NODE) {
- ubifs_err(c, "indexing node in data LEB %d:%d",
- lnum, snod->offs);
- goto out_destroy;
- }
-
- if (snod->type == UBIFS_IDX_NODE) {
- struct ubifs_idx_node *idx = snod->node;
-
- key_read(c, ubifs_idx_key(c, idx), &snod->key);
- level = le16_to_cpu(idx->level);
- }
-
- found = ubifs_tnc_has_node(c, &snod->key, level, lnum,
- snod->offs, is_idx);
- if (found) {
- if (found < 0)
- goto out_destroy;
- used += ALIGN(snod->len, 8);
- }
- }
-
- free = c->leb_size - sleb->endpt;
- dirty = sleb->endpt - used;
-
- if (free > c->leb_size || free < 0 || dirty > c->leb_size ||
- dirty < 0) {
- ubifs_err(c, "bad calculated accounting for LEB %d: free %d, dirty %d",
- lnum, free, dirty);
- goto out_destroy;
- }
-
- if (lp->free + lp->dirty == c->leb_size &&
- free + dirty == c->leb_size)
- if ((is_idx && !(lp->flags & LPROPS_INDEX)) ||
- (!is_idx && free == c->leb_size) ||
- lp->free == c->leb_size) {
- /*
- * Empty or freeable LEBs could contain index
- * nodes from an uncompleted commit due to an
- * unclean unmount. Or they could be empty for
- * the same reason. Or it may simply not have been
- * unmapped.
- */
- free = lp->free;
- dirty = lp->dirty;
- is_idx = 0;
- }
-
- if (is_idx && lp->free + lp->dirty == free + dirty &&
- lnum != c->ihead_lnum) {
- /*
- * After an unclean unmount, an index LEB could have a different
- * amount of free space than the value recorded by lprops. That
- * is because the in-the-gaps method may use free space or
- * create free space (as a side-effect of using ubi_leb_change
- * and not writing the whole LEB). The incorrect free space
- * value is not a problem because the index is only ever
- * allocated empty LEBs, so there will never be an attempt to
- * write to the free space at the end of an index LEB - except
- * by the in-the-gaps method for which it is not a problem.
- */
- free = lp->free;
- dirty = lp->dirty;
- }
-
- if (lp->free != free || lp->dirty != dirty)
- goto out_print;
-
- if (is_idx && !(lp->flags & LPROPS_INDEX)) {
- if (free == c->leb_size)
- /* Free but not unmapped LEB, it's fine */
- is_idx = 0;
- else {
- ubifs_err(c, "indexing node without indexing flag");
- goto out_print;
- }
- }
-
- if (!is_idx && (lp->flags & LPROPS_INDEX)) {
- ubifs_err(c, "data node with indexing flag");
- goto out_print;
- }
-
- if (free == c->leb_size)
- lst->empty_lebs += 1;
-
- if (is_idx)
- lst->idx_lebs += 1;
-
- if (!(lp->flags & LPROPS_INDEX))
- lst->total_used += c->leb_size - free - dirty;
- lst->total_free += free;
- lst->total_dirty += dirty;
-
- if (!(lp->flags & LPROPS_INDEX)) {
- int spc = free + dirty;
-
- if (spc < c->dead_wm)
- lst->total_dead += spc;
- else
- lst->total_dark += ubifs_calc_dark(c, spc);
- }
-
- ubifs_scan_destroy(sleb);
- vfree(buf);
- return LPT_SCAN_CONTINUE;
-
-out_print:
- ubifs_err(c, "bad accounting of LEB %d: free %d, dirty %d flags %#x, should be free %d, dirty %d",
- lnum, lp->free, lp->dirty, lp->flags, free, dirty);
- ubifs_dump_leb(c, lnum);
-out_destroy:
- ubifs_scan_destroy(sleb);
- ret = -EINVAL;
-out:
- vfree(buf);
- return ret;
-}
-
-/**
- * dbg_check_lprops - check all LEB properties.
- * @c: UBIFS file-system description object
- *
- * This function checks all LEB properties and makes sure they are all correct.
- * It returns zero if everything is fine, %-EINVAL if there is an inconsistency
- * and other negative error codes in case of other errors. This function is
- * called while the file system is locked (because of commit start), so no
- * additional locking is required. Note that locking the LPT mutex would cause
- * a circular lock dependency with the TNC mutex.
- */
-int dbg_check_lprops(struct ubifs_info *c)
-{
- int i, err;
- struct ubifs_lp_stats lst;
-
- if (!dbg_is_chk_lprops(c))
- return 0;
-
- /*
- * As we are going to scan the media, the write buffers have to be
- * synchronized.
- */
- for (i = 0; i < c->jhead_cnt; i++) {
- err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
- if (err)
- return err;
- }
-
- memset(&lst, 0, sizeof(struct ubifs_lp_stats));
- err = ubifs_lpt_scan_nolock(c, c->main_first, c->leb_cnt - 1,
- (ubifs_lpt_scan_callback)scan_check_cb,
- &lst);
- if (err && err != -ENOSPC)
- goto out;
-
- if (lst.empty_lebs != c->lst.empty_lebs ||
- lst.idx_lebs != c->lst.idx_lebs ||
- lst.total_free != c->lst.total_free ||
- lst.total_dirty != c->lst.total_dirty ||
- lst.total_used != c->lst.total_used) {
- ubifs_err(c, "bad overall accounting");
- ubifs_err(c, "calculated: empty_lebs %d, idx_lebs %d, total_free %lld, total_dirty %lld, total_used %lld",
- lst.empty_lebs, lst.idx_lebs, lst.total_free,
- lst.total_dirty, lst.total_used);
- ubifs_err(c, "read from lprops: empty_lebs %d, idx_lebs %d, total_free %lld, total_dirty %lld, total_used %lld",
- c->lst.empty_lebs, c->lst.idx_lebs, c->lst.total_free,
- c->lst.total_dirty, c->lst.total_used);
- err = -EINVAL;
- goto out;
- }
-
- if (lst.total_dead != c->lst.total_dead ||
- lst.total_dark != c->lst.total_dark) {
- ubifs_err(c, "bad dead/dark space accounting");
- ubifs_err(c, "calculated: total_dead %lld, total_dark %lld",
- lst.total_dead, lst.total_dark);
- ubifs_err(c, "read from lprops: total_dead %lld, total_dark %lld",
- c->lst.total_dead, c->lst.total_dark);
- err = -EINVAL;
- goto out;
- }
-
- err = dbg_check_cats(c);
-out:
- return err;
-}
* mounted.
*/
+#include "linux_err.h"
+#include "bitops.h"
+#include "kmem.h"
+#include "crc16.h"
#include "ubifs.h"
-#include <linux/crc16.h>
-#include <linux/math64.h>
-#include <linux/slab.h>
+#include "defs.h"
+#include "debug.h"
/**
* do_calc_lpt_geom - calculate sizes for the LPT area.
int i, n, bits, per_leb_wastage, max_pnode_cnt;
long long sz, tot_wastage;
- n = c->main_lebs + c->max_leb_cnt - c->leb_cnt;
- max_pnode_cnt = DIV_ROUND_UP(n, UBIFS_LPT_FANOUT);
+ if (c->program_type != MKFS_PROGRAM_TYPE) {
+ n = c->main_lebs + c->max_leb_cnt - c->leb_cnt;
+ max_pnode_cnt = DIV_ROUND_UP(n, UBIFS_LPT_FANOUT);
+ } else {
+ /*
+ * Different from linux kernel.
+ *
+ * We change it, because 'c->leb_cnt' is not initialized in
+ * mkfs.ubifs when do_calc_lpt_geom() is invoked, 'c->main_lebs'
+ * is calculated by 'c->max_leb_cnt', so the 'c->lpt_hght'
+ * should be calculated by 'c->main_lebs'.
+ */
+ max_pnode_cnt = DIV_ROUND_UP(c->main_lebs, UBIFS_LPT_FANOUT);
+ }
c->lpt_hght = 1;
n = UBIFS_LPT_FANOUT;
}
/**
- * calc_dflt_lpt_geom - calculate default LPT geometry.
+ * ubifs_calc_dflt_lpt_geom - calculate default LPT geometry.
* @c: the UBIFS file-system description object
* @main_lebs: number of main area LEBs is passed and returned here
* @big_lpt: whether the LPT area is "big" is returned here
*
* This function returns %0 on success and a negative error code on failure.
*/
-static int calc_dflt_lpt_geom(struct ubifs_info *c, int *main_lebs,
- int *big_lpt)
+int ubifs_calc_dflt_lpt_geom(struct ubifs_info *c, int *main_lebs, int *big_lpt)
{
int i, lebs_needed;
long long sz;
const int k = 32 - nrbits;
uint8_t *p = *addr;
int b = *pos;
- uint32_t val;
+ uint32_t val = 0;
const int bytes = (nrbits + b + 7) >> 3;
ubifs_assert(c, nrbits > 0);
lnum = c->lpt_first;
p = buf;
len = 0;
- /* Number of leaf nodes (pnodes) */
- cnt = c->pnode_cnt;
+ /*
+ * Different from linux kernel. The number of leaf nodes (pnodes) should
+ * be calculated by the number of current main LEBs. The 'c->pnode_cnt'
+ * may not be equal to 'DIV_ROUND_UP(c->main_lebs, UBIFS_LPT_FANOUT)' in
+ * mkfs when 'c->leb_cnt != c->max_leb_cnt' is true.
+ */
+ cnt = DIV_ROUND_UP(c->main_lebs, UBIFS_LPT_FANOUT);
/*
* To calculate the internal node branches, we keep information about
if (len + c->pnode_sz > c->leb_size) {
alen = ALIGN(len, c->min_io_size);
set_ltab(c, lnum, c->leb_size - alen, alen - len);
- memset(p, 0xff, alen - len);
- err = ubifs_leb_change(c, lnum++, buf, alen);
+ /*
+ * Different from linux kernel.
+ * The mkfs may partially write data into a certain LEB
+ * of file image, the left unwritten area in the LEB
+ * should be filled with '0xFF'.
+ */
+ if (c->libubi) {
+ memset(p, 0xff, alen - len);
+ err = ubifs_leb_change(c, lnum++, buf, alen);
+ } else {
+ memset(p, 0xff, c->leb_size - len);
+ err = ubifs_leb_change(c, lnum++, buf, c->leb_size);
+ }
if (err)
goto out;
p = buf;
pnode->num += 1;
}
- row = 0;
- for (i = UBIFS_LPT_FANOUT; cnt > i; i <<= UBIFS_LPT_FANOUT_SHIFT)
- row += 1;
+ /*
+ * Different from linux kernel. The 'c->lpt_hght' is calculated by the
+ * 'c->max_leb_cnt', according to the implementation of function
+ * ubifs_pnode_lookup(), there are at least 'c->lpt_hght' cnodes should
+ * be created, otherwise the LPT looking up could be failed after
+ * mouting.
+ */
+ row = c->lpt_hght - 1;
/* Add all nnodes, one level at a time */
while (1) {
/* Number of internal nodes (nnodes) at next level */
cnt = DIV_ROUND_UP(cnt, UBIFS_LPT_FANOUT);
+ if (cnt == 0)
+ cnt = 1;
for (i = 0; i < cnt; i++) {
if (len + c->nnode_sz > c->leb_size) {
alen = ALIGN(len, c->min_io_size);
set_ltab(c, lnum, c->leb_size - alen,
alen - len);
- memset(p, 0xff, alen - len);
- err = ubifs_leb_change(c, lnum++, buf, alen);
+ /*
+ * Different from linux kernel.
+ * The mkfs may partially write data into a certain LEB
+ * of file image, the left unwritten area in the LEB
+ * should be filled with '0xFF'.
+ */
+ if (c->libubi) {
+ memset(p, 0xff, alen - len);
+ err = ubifs_leb_change(c, lnum++, buf, alen);
+ } else {
+ memset(p, 0xff, c->leb_size - len);
+ err = ubifs_leb_change(c, lnum++, buf, c->leb_size);
+ }
if (err)
goto out;
p = buf;
len = 0;
}
/* Only 1 nnode at this level, so it is the root */
- if (cnt == 1) {
+ if (row == 0) {
c->lpt_lnum = lnum;
c->lpt_offs = len;
}
p += c->nnode_sz;
len += c->nnode_sz;
}
- /* Only 1 nnode at this level, so it is the root */
- if (cnt == 1)
+ /* Row zero is the top row */
+ if (row == 0)
break;
/* Update the information about the level below */
bcnt = cnt;
if (len + c->lsave_sz > c->leb_size) {
alen = ALIGN(len, c->min_io_size);
set_ltab(c, lnum, c->leb_size - alen, alen - len);
- memset(p, 0xff, alen - len);
- err = ubifs_leb_change(c, lnum++, buf, alen);
+ /*
+ * Different from linux kernel.
+ * The mkfs may partially write data into a certain LEB
+ * of file image, the left unwritten area in the LEB
+ * should be filled with '0xFF'.
+ */
+ if (c->libubi) {
+ memset(p, 0xff, alen - len);
+ err = ubifs_leb_change(c, lnum++, buf, alen);
+ } else {
+ memset(p, 0xff, c->leb_size - len);
+ err = ubifs_leb_change(c, lnum++, buf, c->leb_size);
+ }
if (err)
goto out;
p = buf;
if (len + c->ltab_sz > c->leb_size) {
alen = ALIGN(len, c->min_io_size);
set_ltab(c, lnum, c->leb_size - alen, alen - len);
- memset(p, 0xff, alen - len);
- err = ubifs_leb_change(c, lnum++, buf, alen);
+ /*
+ * Different from linux kernel.
+ * The mkfs may partially write data into a certain LEB
+ * of file image, the left unwritten area in the LEB
+ * should be filled with '0xFF'.
+ */
+ if (c->libubi) {
+ memset(p, 0xff, alen - len);
+ err = ubifs_leb_change(c, lnum++, buf, alen);
+ } else {
+ memset(p, 0xff, c->leb_size - len);
+ err = ubifs_leb_change(c, lnum++, buf, c->leb_size);
+ }
if (err)
goto out;
p = buf;
p += c->ltab_sz;
/* Write remaining buffer */
- memset(p, 0xff, alen - len);
- err = ubifs_leb_change(c, lnum, buf, alen);
+ /*
+ * Different from linux kernel.
+ * The mkfs may partially write data into a certain LEB
+ * of file image, the left unwritten area in the LEB
+ * should be filled with '0xFF'.
+ */
+ if (c->libubi) {
+ memset(p, 0xff, alen - len);
+ err = ubifs_leb_change(c, lnum, buf, alen);
+ } else {
+ memset(p, 0xff, c->leb_size - len);
+ err = ubifs_leb_change(c, lnum, buf, c->leb_size);
+ }
if (err)
goto out;
+ if (c->big_lpt && c->lsave)
+ memcpy(c->lsave, lsave, c->lsave_cnt * sizeof(int));
+
err = ubifs_shash_final(c, desc, hash);
if (err)
goto out;
return err;
}
-/**
- * ubifs_create_dflt_lpt - create default LPT.
- * @c: UBIFS file-system description object
- * @main_lebs: number of main area LEBs is passed and returned here
- * @lpt_first: LEB number of first LPT LEB
- * @lpt_lebs: number of LEBs for LPT is passed and returned here
- * @big_lpt: use big LPT model is passed and returned here
- * @hash: hash of the LPT is returned here
- *
- * This function returns %0 on success and a negative error code on failure.
- */
-int ubifs_create_dflt_lpt(struct ubifs_info *c, int *main_lebs, int lpt_first,
- int *lpt_lebs, int *big_lpt, u8 *hash)
-{
- int node_sz, iopos, err = 0;
- struct ubifs_lprops lps[2];
-
- err = calc_dflt_lpt_geom(c, main_lebs, big_lpt);
- if (err)
- return err;
- *lpt_lebs = c->lpt_lebs;
-
- /* Needed by 'ubifs_pack_nnode()' and 'set_ltab()' */
- c->lpt_first = lpt_first;
- /* Needed by 'set_ltab()' */
- c->lpt_last = lpt_first + c->lpt_lebs - 1;
- /* Needed by 'ubifs_pack_lsave()' */
- c->main_first = c->leb_cnt - *main_lebs;
-
- /*
- * The first pnode contains the LEB properties for the LEBs that contain
- * the root inode node and the root index node of the index tree.
- */
- node_sz = ALIGN(ubifs_idx_node_sz(c, 1), 8);
- iopos = ALIGN(node_sz, c->min_io_size);
- lps[0].free = c->leb_size - iopos;
- lps[0].dirty = iopos - node_sz;
- lps[0].flags = LPROPS_INDEX;
-
- node_sz = UBIFS_INO_NODE_SZ;
- iopos = ALIGN(node_sz, c->min_io_size);
- lps[1].free = c->leb_size - iopos;
- lps[1].dirty = iopos - node_sz;
- lps[1].flags = 0;
-
- return ubifs_create_lpt(c, lps, 2, hash);
-}
-
/**
* update_cats - add LEB properties of a pnode to LEB category lists and heaps.
* @c: UBIFS file-system description object
kfree(path);
return err;
}
-
-/**
- * dbg_chk_pnode - check a pnode.
- * @c: the UBIFS file-system description object
- * @pnode: pnode to check
- * @col: pnode column
- *
- * This function returns %0 on success and a negative error code on failure.
- */
-static int dbg_chk_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
- int col)
-{
- int i;
-
- if (pnode->num != col) {
- ubifs_err(c, "pnode num %d expected %d parent num %d iip %d",
- pnode->num, col, pnode->parent->num, pnode->iip);
- return -EINVAL;
- }
- for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
- struct ubifs_lprops *lp, *lprops = &pnode->lprops[i];
- int lnum = (pnode->num << UBIFS_LPT_FANOUT_SHIFT) + i +
- c->main_first;
- int found, cat = lprops->flags & LPROPS_CAT_MASK;
- struct ubifs_lpt_heap *heap;
- struct list_head *list = NULL;
-
- if (lnum >= c->leb_cnt)
- continue;
- if (lprops->lnum != lnum) {
- ubifs_err(c, "bad LEB number %d expected %d",
- lprops->lnum, lnum);
- return -EINVAL;
- }
- if (lprops->flags & LPROPS_TAKEN) {
- if (cat != LPROPS_UNCAT) {
- ubifs_err(c, "LEB %d taken but not uncat %d",
- lprops->lnum, cat);
- return -EINVAL;
- }
- continue;
- }
- if (lprops->flags & LPROPS_INDEX) {
- switch (cat) {
- case LPROPS_UNCAT:
- case LPROPS_DIRTY_IDX:
- case LPROPS_FRDI_IDX:
- break;
- default:
- ubifs_err(c, "LEB %d index but cat %d",
- lprops->lnum, cat);
- return -EINVAL;
- }
- } else {
- switch (cat) {
- case LPROPS_UNCAT:
- case LPROPS_DIRTY:
- case LPROPS_FREE:
- case LPROPS_EMPTY:
- case LPROPS_FREEABLE:
- break;
- default:
- ubifs_err(c, "LEB %d not index but cat %d",
- lprops->lnum, cat);
- return -EINVAL;
- }
- }
- switch (cat) {
- case LPROPS_UNCAT:
- list = &c->uncat_list;
- break;
- case LPROPS_EMPTY:
- list = &c->empty_list;
- break;
- case LPROPS_FREEABLE:
- list = &c->freeable_list;
- break;
- case LPROPS_FRDI_IDX:
- list = &c->frdi_idx_list;
- break;
- }
- found = 0;
- switch (cat) {
- case LPROPS_DIRTY:
- case LPROPS_DIRTY_IDX:
- case LPROPS_FREE:
- heap = &c->lpt_heap[cat - 1];
- if (lprops->hpos < heap->cnt &&
- heap->arr[lprops->hpos] == lprops)
- found = 1;
- break;
- case LPROPS_UNCAT:
- case LPROPS_EMPTY:
- case LPROPS_FREEABLE:
- case LPROPS_FRDI_IDX:
- list_for_each_entry(lp, list, list)
- if (lprops == lp) {
- found = 1;
- break;
- }
- break;
- }
- if (!found) {
- ubifs_err(c, "LEB %d cat %d not found in cat heap/list",
- lprops->lnum, cat);
- return -EINVAL;
- }
- switch (cat) {
- case LPROPS_EMPTY:
- if (lprops->free != c->leb_size) {
- ubifs_err(c, "LEB %d cat %d free %d dirty %d",
- lprops->lnum, cat, lprops->free,
- lprops->dirty);
- return -EINVAL;
- }
- break;
- case LPROPS_FREEABLE:
- case LPROPS_FRDI_IDX:
- if (lprops->free + lprops->dirty != c->leb_size) {
- ubifs_err(c, "LEB %d cat %d free %d dirty %d",
- lprops->lnum, cat, lprops->free,
- lprops->dirty);
- return -EINVAL;
- }
- break;
- }
- }
- return 0;
-}
-
-/**
- * dbg_check_lpt_nodes - check nnodes and pnodes.
- * @c: the UBIFS file-system description object
- * @cnode: next cnode (nnode or pnode) to check
- * @row: row of cnode (root is zero)
- * @col: column of cnode (leftmost is zero)
- *
- * This function returns %0 on success and a negative error code on failure.
- */
-int dbg_check_lpt_nodes(struct ubifs_info *c, struct ubifs_cnode *cnode,
- int row, int col)
-{
- struct ubifs_nnode *nnode, *nn;
- struct ubifs_cnode *cn;
- int num, iip = 0, err;
-
- if (!dbg_is_chk_lprops(c))
- return 0;
-
- while (cnode) {
- ubifs_assert(c, row >= 0);
- nnode = cnode->parent;
- if (cnode->level) {
- /* cnode is a nnode */
- num = calc_nnode_num(row, col);
- if (cnode->num != num) {
- ubifs_err(c, "nnode num %d expected %d parent num %d iip %d",
- cnode->num, num,
- (nnode ? nnode->num : 0), cnode->iip);
- return -EINVAL;
- }
- nn = (struct ubifs_nnode *)cnode;
- while (iip < UBIFS_LPT_FANOUT) {
- cn = nn->nbranch[iip].cnode;
- if (cn) {
- /* Go down */
- row += 1;
- col <<= UBIFS_LPT_FANOUT_SHIFT;
- col += iip;
- iip = 0;
- cnode = cn;
- break;
- }
- /* Go right */
- iip += 1;
- }
- if (iip < UBIFS_LPT_FANOUT)
- continue;
- } else {
- struct ubifs_pnode *pnode;
-
- /* cnode is a pnode */
- pnode = (struct ubifs_pnode *)cnode;
- err = dbg_chk_pnode(c, pnode, col);
- if (err)
- return err;
- }
- /* Go up and to the right */
- row -= 1;
- col >>= UBIFS_LPT_FANOUT_SHIFT;
- iip = cnode->iip + 1;
- cnode = (struct ubifs_cnode *)nnode;
- }
- return 0;
-}
* subsystem.
*/
-#include <linux/crc16.h>
-#include <linux/slab.h>
-#include <linux/random.h>
+#include "linux_err.h"
+#include "bitops.h"
+#include "kmem.h"
+#include "crc16.h"
#include "ubifs.h"
+#include "defs.h"
+#include "debug.h"
+#include "misc.h"
static int dbg_populate_lsave(struct ubifs_info *c);
* @buf: buffer
* @len: length of buffer
*/
-static int get_pad_len(const struct ubifs_info *c, uint8_t *buf, int len)
+static int get_pad_len(const struct ubifs_info *c, __unused uint8_t *buf,
+ int len)
{
int offs, pad_len;
int ret;
void *buf, *p;
- if (!dbg_is_chk_lprops(c))
- return 0;
-
buf = p = __vmalloc(c->leb_size, GFP_NOFS);
if (!buf) {
ubifs_err(c, "cannot allocate memory for ltab checking");
len -= node_len;
}
- err = 0;
out:
vfree(buf);
return err;
}
-/**
- * dbg_check_ltab - check the free and dirty space in the ltab.
- * @c: the UBIFS file-system description object
- *
- * This function returns %0 on success and a negative error code on failure.
- */
-int dbg_check_ltab(struct ubifs_info *c)
-{
- int lnum, err, i, cnt;
-
- if (!dbg_is_chk_lprops(c))
- return 0;
-
- /* Bring the entire tree into memory */
- cnt = DIV_ROUND_UP(c->main_lebs, UBIFS_LPT_FANOUT);
- for (i = 0; i < cnt; i++) {
- struct ubifs_pnode *pnode;
-
- pnode = ubifs_pnode_lookup(c, i);
- if (IS_ERR(pnode))
- return PTR_ERR(pnode);
- cond_resched();
- }
-
- /* Check nodes */
- err = dbg_check_lpt_nodes(c, (struct ubifs_cnode *)c->nroot, 0, 0);
- if (err)
- return err;
-
- /* Check each LEB */
- for (lnum = c->lpt_first; lnum <= c->lpt_last; lnum++) {
- err = dbg_check_ltab_lnum(c, lnum);
- if (err) {
- ubifs_err(c, "failed at LEB %d", lnum);
- return err;
- }
- }
-
- dbg_lp("succeeded");
- return 0;
-}
-
-/**
- * dbg_chk_lpt_free_spc - check LPT free space is enough to write entire LPT.
- * @c: the UBIFS file-system description object
- *
- * This function returns %0 on success and a negative error code on failure.
- */
-int dbg_chk_lpt_free_spc(struct ubifs_info *c)
-{
- long long free = 0;
- int i;
-
- if (!dbg_is_chk_lprops(c))
- return 0;
-
- for (i = 0; i < c->lpt_lebs; i++) {
- if (c->ltab[i].tgc || c->ltab[i].cmt)
- continue;
- if (i + c->lpt_first == c->nhead_lnum)
- free += c->leb_size - c->nhead_offs;
- else if (c->ltab[i].free == c->leb_size)
- free += c->leb_size;
- }
- if (free < c->lpt_sz) {
- ubifs_err(c, "LPT space error: free %lld lpt_sz %lld",
- free, c->lpt_sz);
- ubifs_dump_lpt_info(c);
- ubifs_dump_lpt_lebs(c);
- dump_stack();
- return -EINVAL;
- }
- return 0;
-}
-
-/**
- * dbg_chk_lpt_sz - check LPT does not write more than LPT size.
- * @c: the UBIFS file-system description object
- * @action: what to do
- * @len: length written
- *
- * This function returns %0 on success and a negative error code on failure.
- * The @action argument may be one of:
- * o %0 - LPT debugging checking starts, initialize debugging variables;
- * o %1 - wrote an LPT node, increase LPT size by @len bytes;
- * o %2 - switched to a different LEB and wasted @len bytes;
- * o %3 - check that we've written the right number of bytes.
- * o %4 - wasted @len bytes;
- */
-int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len)
-{
- struct ubifs_debug_info *d = c->dbg;
- long long chk_lpt_sz, lpt_sz;
- int err = 0;
-
- if (!dbg_is_chk_lprops(c))
- return 0;
-
- switch (action) {
- case 0:
- d->chk_lpt_sz = 0;
- d->chk_lpt_sz2 = 0;
- d->chk_lpt_lebs = 0;
- d->chk_lpt_wastage = 0;
- if (c->dirty_pn_cnt > c->pnode_cnt) {
- ubifs_err(c, "dirty pnodes %d exceed max %d",
- c->dirty_pn_cnt, c->pnode_cnt);
- err = -EINVAL;
- }
- if (c->dirty_nn_cnt > c->nnode_cnt) {
- ubifs_err(c, "dirty nnodes %d exceed max %d",
- c->dirty_nn_cnt, c->nnode_cnt);
- err = -EINVAL;
- }
- return err;
- case 1:
- d->chk_lpt_sz += len;
- return 0;
- case 2:
- d->chk_lpt_sz += len;
- d->chk_lpt_wastage += len;
- d->chk_lpt_lebs += 1;
- return 0;
- case 3:
- chk_lpt_sz = c->leb_size;
- chk_lpt_sz *= d->chk_lpt_lebs;
- chk_lpt_sz += len - c->nhead_offs;
- if (d->chk_lpt_sz != chk_lpt_sz) {
- ubifs_err(c, "LPT wrote %lld but space used was %lld",
- d->chk_lpt_sz, chk_lpt_sz);
- err = -EINVAL;
- }
- if (d->chk_lpt_sz > c->lpt_sz) {
- ubifs_err(c, "LPT wrote %lld but lpt_sz is %lld",
- d->chk_lpt_sz, c->lpt_sz);
- err = -EINVAL;
- }
- if (d->chk_lpt_sz2 && d->chk_lpt_sz != d->chk_lpt_sz2) {
- ubifs_err(c, "LPT layout size %lld but wrote %lld",
- d->chk_lpt_sz, d->chk_lpt_sz2);
- err = -EINVAL;
- }
- if (d->chk_lpt_sz2 && d->new_nhead_offs != len) {
- ubifs_err(c, "LPT new nhead offs: expected %d was %d",
- d->new_nhead_offs, len);
- err = -EINVAL;
- }
- lpt_sz = (long long)c->pnode_cnt * c->pnode_sz;
- lpt_sz += (long long)c->nnode_cnt * c->nnode_sz;
- lpt_sz += c->ltab_sz;
- if (c->big_lpt)
- lpt_sz += c->lsave_sz;
- if (d->chk_lpt_sz - d->chk_lpt_wastage > lpt_sz) {
- ubifs_err(c, "LPT chk_lpt_sz %lld + waste %lld exceeds %lld",
- d->chk_lpt_sz, d->chk_lpt_wastage, lpt_sz);
- err = -EINVAL;
- }
- if (err) {
- ubifs_dump_lpt_info(c);
- ubifs_dump_lpt_lebs(c);
- dump_stack();
- }
- d->chk_lpt_sz2 = d->chk_lpt_sz;
- d->chk_lpt_sz = 0;
- d->chk_lpt_wastage = 0;
- d->chk_lpt_lebs = 0;
- d->new_nhead_offs = len;
- return err;
- case 4:
- d->chk_lpt_sz += len;
- d->chk_lpt_wastage += len;
- return 0;
- default:
- return -EINVAL;
- }
-}
-
/**
* dump_lpt_leb - dump an LPT LEB.
* @c: UBIFS file-system description object
int err, len = c->leb_size, node_type, node_num, node_len, offs;
void *buf, *p;
- pr_err("(pid %d) start dumping LEB %d\n", current->pid, lnum);
+ pr_err("(pid %d) start dumping LEB %d\n", getpid(), lnum);
buf = p = __vmalloc(c->leb_size, GFP_NOFS);
if (!buf) {
ubifs_err(c, "cannot allocate memory to dump LPT");
len -= node_len;
}
- pr_err("(pid %d) finish dumping LEB %d\n", current->pid, lnum);
+ pr_err("(pid %d) finish dumping LEB %d\n", getpid(), lnum);
out:
vfree(buf);
return;
{
int i;
- pr_err("(pid %d) start dumping all LPT LEBs\n", current->pid);
+ pr_err("(pid %d) start dumping all LPT LEBs\n", getpid());
for (i = 0; i < c->lpt_lebs; i++)
dump_lpt_leb(c, i + c->lpt_first);
- pr_err("(pid %d) finish dumping all LPT LEBs\n", current->pid);
+ pr_err("(pid %d) finish dumping all LPT LEBs\n", getpid());
}
/**
* Returns zero if lsave has not been populated (this debugging feature is
* disabled) an non-zero if lsave has been populated.
*/
-static int dbg_populate_lsave(struct ubifs_info *c)
+static int dbg_populate_lsave(__unused struct ubifs_info *c)
{
- struct ubifs_lprops *lprops;
- struct ubifs_lpt_heap *heap;
- int i;
-
- if (!dbg_is_chk_gen(c))
- return 0;
- if (get_random_u32_below(4))
- return 0;
-
- for (i = 0; i < c->lsave_cnt; i++)
- c->lsave[i] = c->main_first;
-
- list_for_each_entry(lprops, &c->empty_list, list)
- c->lsave[get_random_u32_below(c->lsave_cnt)] = lprops->lnum;
- list_for_each_entry(lprops, &c->freeable_list, list)
- c->lsave[get_random_u32_below(c->lsave_cnt)] = lprops->lnum;
- list_for_each_entry(lprops, &c->frdi_idx_list, list)
- c->lsave[get_random_u32_below(c->lsave_cnt)] = lprops->lnum;
-
- heap = &c->lpt_heap[LPROPS_DIRTY_IDX - 1];
- for (i = 0; i < heap->cnt; i++)
- c->lsave[get_random_u32_below(c->lsave_cnt)] = heap->arr[i]->lnum;
- heap = &c->lpt_heap[LPROPS_DIRTY - 1];
- for (i = 0; i < heap->cnt; i++)
- c->lsave[get_random_u32_below(c->lsave_cnt)] = heap->arr[i]->lnum;
- heap = &c->lpt_heap[LPROPS_FREE - 1];
- for (i = 0; i < heap->cnt; i++)
- c->lsave[get_random_u32_below(c->lsave_cnt)] = heap->arr[i]->lnum;
-
- return 1;
+ return 0;
}
projects / mtd-utils.git / commitdiff