From 2ba5f7ae8165b3f575dd3a7d8bb18f421fab8273 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Fri, 31 Oct 2008 17:32:30 +0200 Subject: [PATCH] UBIFS: introduce LPT dump function Signed-off-by: Artem Bityutskiy --- fs/ubifs/debug.c | 28 +++++---- fs/ubifs/debug.h | 45 ++++++++------- fs/ubifs/lpt.c | 27 ++++----- fs/ubifs/lpt_commit.c | 131 ++++++++++++++++++++++++++++++++++++++++-- fs/ubifs/ubifs.h | 3 + 5 files changed, 186 insertions(+), 48 deletions(-) diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c index 56842772c804..934db1855f09 100644 --- a/fs/ubifs/debug.c +++ b/fs/ubifs/debug.c @@ -646,7 +646,8 @@ void dbg_dump_lprops(struct ubifs_info *c) 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); @@ -657,6 +658,8 @@ void dbg_dump_lprops(struct ubifs_info *c) 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) @@ -664,6 +667,7 @@ 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); @@ -704,8 +708,8 @@ 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); - + 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)); @@ -722,6 +726,8 @@ void dbg_dump_leb(const struct ubifs_info *c, int lnum) dbg_dump_node(c, snod->node); } + printk(KERN_DEBUG "(pid %d) finish dumping LEB %d\n", + current->pid, lnum); ubifs_scan_destroy(sleb); return; } @@ -769,7 +775,7 @@ void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat) { 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]; @@ -778,6 +784,7 @@ void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat) "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, @@ -785,7 +792,7 @@ 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", @@ -804,7 +811,7 @@ void dbg_dump_tnc(struct ubifs_info *c) 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); @@ -816,8 +823,7 @@ void dbg_dump_tnc(struct ubifs_info *c) 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, @@ -992,7 +998,8 @@ static int dbg_check_key_order(struct ubifs_info *c, struct ubifs_zbranch *zbr1, ubifs_err("1st entry at %d:%d has key %s", zbr1->lnum, zbr1->offs, DBGKEY(&key)); ubifs_err("but it should have key %s according to tnc", - DBGKEY(&zbr1->key)); dbg_dump_node(c, dent1); + DBGKEY(&zbr1->key)); + dbg_dump_node(c, dent1); goto out_free; } @@ -1001,7 +1008,8 @@ static int dbg_check_key_order(struct ubifs_info *c, struct ubifs_zbranch *zbr1, ubifs_err("2nd entry at %d:%d has key %s", zbr1->lnum, zbr1->offs, DBGKEY(&key)); ubifs_err("but it should have key %s according to tnc", - DBGKEY(&zbr2->key)); dbg_dump_node(c, dent2); + DBGKEY(&zbr2->key)); + dbg_dump_node(c, dent2); goto out_free; } diff --git a/fs/ubifs/debug.h b/fs/ubifs/debug.h index a6b70f8aac9c..9820d6999f7e 100644 --- a/fs/ubifs/debug.h +++ b/fs/ubifs/debug.h @@ -270,6 +270,8 @@ const char *dbg_get_key_dump(const struct ubifs_info *c, const union ubifs_key *key); void dbg_dump_inode(const struct ubifs_info *c, const struct inode *inode); void dbg_dump_node(const struct ubifs_info *c, const void *node); +void dbg_dump_lpt_node(const struct ubifs_info *c, void *node, int lnum, + int offs); void dbg_dump_budget_req(const struct ubifs_budget_req *req); void dbg_dump_lstats(const struct ubifs_lp_stats *lst); void dbg_dump_budg(struct ubifs_info *c); @@ -284,6 +286,7 @@ void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode, struct ubifs_nnode *parent, int iip); void dbg_dump_tnc(struct ubifs_info *c); void dbg_dump_index(struct ubifs_info *c); +void dbg_dump_lpt_lebs(const struct ubifs_info *c); /* Checking helper functions */ typedef int (*dbg_leaf_callback)(struct ubifs_info *c, @@ -411,26 +414,28 @@ void dbg_debugfs_exit_fs(struct ubifs_info *c); #define DBGKEY(key) ((char *)(key)) #define DBGKEY1(key) ((char *)(key)) -#define ubifs_debugging_init(c) 0 -#define ubifs_debugging_exit(c) ({}) - -#define dbg_ntype(type) "" -#define dbg_cstate(cmt_state) "" -#define dbg_get_key_dump(c, key) ({}) -#define dbg_dump_inode(c, inode) ({}) -#define dbg_dump_node(c, node) ({}) -#define dbg_dump_budget_req(req) ({}) -#define dbg_dump_lstats(lst) ({}) -#define dbg_dump_budg(c) ({}) -#define dbg_dump_lprop(c, lp) ({}) -#define dbg_dump_lprops(c) ({}) -#define dbg_dump_lpt_info(c) ({}) -#define dbg_dump_leb(c, lnum) ({}) -#define dbg_dump_znode(c, znode) ({}) -#define dbg_dump_heap(c, heap, cat) ({}) -#define dbg_dump_pnode(c, pnode, parent, iip) ({}) -#define dbg_dump_tnc(c) ({}) -#define dbg_dump_index(c) ({}) +#define ubifs_debugging_init(c) 0 +#define ubifs_debugging_exit(c) ({}) + +#define dbg_ntype(type) "" +#define dbg_cstate(cmt_state) "" +#define dbg_get_key_dump(c, key) ({}) +#define dbg_dump_inode(c, inode) ({}) +#define dbg_dump_node(c, node) ({}) +#define dbg_dump_lpt_node(c, node, lnum, offs) ({}) +#define dbg_dump_budget_req(req) ({}) +#define dbg_dump_lstats(lst) ({}) +#define dbg_dump_budg(c) ({}) +#define dbg_dump_lprop(c, lp) ({}) +#define dbg_dump_lprops(c) ({}) +#define dbg_dump_lpt_info(c) ({}) +#define dbg_dump_leb(c, lnum) ({}) +#define dbg_dump_znode(c, znode) ({}) +#define dbg_dump_heap(c, heap, cat) ({}) +#define dbg_dump_pnode(c, pnode, parent, iip) ({}) +#define dbg_dump_tnc(c) ({}) +#define dbg_dump_index(c) ({}) +#define dbg_dump_lpt_lebs(c) ({}) #define dbg_walk_index(c, leaf_cb, znode_cb, priv) 0 #define dbg_old_index_check_init(c, zroot) 0 diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c index 93c181c742f2..6d914160ec55 100644 --- a/fs/ubifs/lpt.c +++ b/fs/ubifs/lpt.c @@ -557,7 +557,7 @@ static int calc_nnode_num(int row, int col) * This function calculates and returns the nnode number based on the parent's * nnode number and the index in parent. */ -static int calc_nnode_num_from_parent(struct ubifs_info *c, +static int calc_nnode_num_from_parent(const struct ubifs_info *c, struct ubifs_nnode *parent, int iip) { int num, shft; @@ -582,7 +582,7 @@ static int calc_nnode_num_from_parent(struct ubifs_info *c, * This function calculates and returns the pnode number based on the parent's * nnode number and the index in parent. */ -static int calc_pnode_num_from_parent(struct ubifs_info *c, +static int calc_pnode_num_from_parent(const struct ubifs_info *c, struct ubifs_nnode *parent, int iip) { int i, n = c->lpt_hght - 1, pnum = parent->num, num = 0; @@ -965,7 +965,7 @@ static int check_lpt_type(uint8_t **addr, int *pos, int type) * * This function returns %0 on success and a negative error code on failure. */ -static int unpack_pnode(struct ubifs_info *c, void *buf, +static int unpack_pnode(const struct ubifs_info *c, void *buf, struct ubifs_pnode *pnode) { uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES; @@ -995,15 +995,15 @@ static int unpack_pnode(struct ubifs_info *c, void *buf, } /** - * unpack_nnode - unpack a nnode. + * ubifs_unpack_nnode - unpack a nnode. * @c: UBIFS file-system description object * @buf: buffer containing packed nnode to unpack * @nnode: nnode structure to fill * * This function returns %0 on success and a negative error code on failure. */ -static int unpack_nnode(struct ubifs_info *c, void *buf, - struct ubifs_nnode *nnode) +int ubifs_unpack_nnode(const struct ubifs_info *c, void *buf, + struct ubifs_nnode *nnode) { uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES; int i, pos = 0, err; @@ -1035,7 +1035,7 @@ static int unpack_nnode(struct ubifs_info *c, void *buf, * * This function returns %0 on success and a negative error code on failure. */ -static int unpack_ltab(struct ubifs_info *c, void *buf) +static int unpack_ltab(const struct ubifs_info *c, void *buf) { uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES; int i, pos = 0, err; @@ -1067,7 +1067,7 @@ static int unpack_ltab(struct ubifs_info *c, void *buf) * * This function returns %0 on success and a negative error code on failure. */ -static int unpack_lsave(struct ubifs_info *c, void *buf) +static int unpack_lsave(const struct ubifs_info *c, void *buf) { uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES; int i, pos = 0, err; @@ -1095,7 +1095,7 @@ static int unpack_lsave(struct ubifs_info *c, void *buf) * * This function returns %0 on success and a negative error code on failure. */ -static int validate_nnode(struct ubifs_info *c, struct ubifs_nnode *nnode, +static int validate_nnode(const struct ubifs_info *c, struct ubifs_nnode *nnode, struct ubifs_nnode *parent, int iip) { int i, lvl, max_offs; @@ -1139,7 +1139,7 @@ static int validate_nnode(struct ubifs_info *c, struct ubifs_nnode *nnode, * * This function returns %0 on success and a negative error code on failure. */ -static int validate_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode, +static int validate_pnode(const struct ubifs_info *c, struct ubifs_pnode *pnode, struct ubifs_nnode *parent, int iip) { int i; @@ -1173,7 +1173,8 @@ static int validate_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode, * This function calculates the LEB numbers for the LEB properties it contains * based on the pnode number. */ -static void set_pnode_lnum(struct ubifs_info *c, struct ubifs_pnode *pnode) +static void set_pnode_lnum(const struct ubifs_info *c, + struct ubifs_pnode *pnode) { int i, lnum; @@ -1226,7 +1227,7 @@ int ubifs_read_nnode(struct ubifs_info *c, struct ubifs_nnode *parent, int iip) err = ubi_read(c->ubi, lnum, buf, offs, c->nnode_sz); if (err) goto out; - err = unpack_nnode(c, buf, nnode); + err = ubifs_unpack_nnode(c, buf, nnode); if (err) goto out; } @@ -1815,7 +1816,7 @@ static struct ubifs_nnode *scan_get_nnode(struct ubifs_info *c, c->nnode_sz); if (err) return ERR_PTR(err); - err = unpack_nnode(c, buf, nnode); + err = ubifs_unpack_nnode(c, buf, nnode); if (err) return ERR_PTR(err); } diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c index c5c07f9cd22c..da60b5a0fab9 100644 --- a/fs/ubifs/lpt_commit.c +++ b/fs/ubifs/lpt_commit.c @@ -320,6 +320,7 @@ no_space: dbg_err("LPT out of space at LEB %d:%d needing %d, done_ltab %d, " "done_lsave %d", lnum, offs, len, done_ltab, done_lsave); dbg_dump_lpt_info(c); + dbg_dump_lpt_lebs(c); dump_stack(); return err; } @@ -549,6 +550,7 @@ no_space: dbg_err("LPT out of space mismatch at LEB %d:%d needing %d, done_ltab " "%d, done_lsave %d", lnum, offs, len, done_ltab, done_lsave); dbg_dump_lpt_info(c); + dbg_dump_lpt_lebs(c); dump_stack(); return err; } @@ -1027,7 +1029,7 @@ static int make_node_dirty(struct ubifs_info *c, int node_type, int node_num, * @c: UBIFS file-system description object * @node_type: LPT node type */ -static int get_lpt_node_len(struct ubifs_info *c, int node_type) +static int get_lpt_node_len(const struct ubifs_info *c, int node_type) { switch (node_type) { case UBIFS_LPT_NNODE: @@ -1048,7 +1050,7 @@ static int get_lpt_node_len(struct ubifs_info *c, int node_type) * @buf: buffer * @len: length of buffer */ -static int get_pad_len(struct ubifs_info *c, uint8_t *buf, int len) +static int get_pad_len(const struct ubifs_info *c, uint8_t *buf, int len) { int offs, pad_len; @@ -1065,7 +1067,8 @@ static int get_pad_len(struct ubifs_info *c, uint8_t *buf, int len) * @buf: buffer * @node_num: node number is returned here */ -static int get_lpt_node_type(struct ubifs_info *c, uint8_t *buf, int *node_num) +static int get_lpt_node_type(const struct ubifs_info *c, uint8_t *buf, + int *node_num) { uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES; int pos = 0, node_type; @@ -1083,7 +1086,7 @@ static int get_lpt_node_type(struct ubifs_info *c, uint8_t *buf, int *node_num) * * This function returns %1 if the buffer contains a node or %0 if it does not. */ -static int is_a_node(struct ubifs_info *c, uint8_t *buf, int len) +static int is_a_node(const struct ubifs_info *c, uint8_t *buf, int len) { uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES; int pos = 0, node_type, node_len; @@ -1107,7 +1110,6 @@ static int is_a_node(struct ubifs_info *c, uint8_t *buf, int len) return 1; } - /** * lpt_gc_lnum - garbage collect a LPT LEB. * @c: UBIFS file-system description object @@ -1724,6 +1726,7 @@ int dbg_chk_lpt_free_spc(struct ubifs_info *c) dbg_err("LPT space error: free %lld lpt_sz %lld", free, c->lpt_sz); dbg_dump_lpt_info(c); + dbg_dump_lpt_lebs(c); dump_stack(); return -EINVAL; } @@ -1808,6 +1811,7 @@ int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len) } if (err) { dbg_dump_lpt_info(c); + dbg_dump_lpt_lebs(c); dump_stack(); } d->chk_lpt_sz2 = d->chk_lpt_sz; @@ -1825,4 +1829,121 @@ int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len) } } +/** + * dbg_dump_lpt_leb - dump an LPT LEB. + * @c: UBIFS file-system description object + * @lnum: LEB number to dump + * + * This function dumps an LEB from LPT area. Nodes in this area are very + * different to nodes in the main area (e.g., they do not have common headers, + * they do not have 8-byte alignments, etc), so we have a separate function to + * dump LPT area LEBs. Note, LPT has to be locked by the coller. + */ +static void dump_lpt_leb(const struct ubifs_info *c, int lnum) +{ + int err, len = c->leb_size, node_type, node_num, node_len, offs; + void *buf = c->dbg->buf; + + printk(KERN_DEBUG "(pid %d) start dumping LEB %d\n", + current->pid, lnum); + err = ubi_read(c->ubi, lnum, buf, 0, c->leb_size); + if (err) { + ubifs_err("cannot read LEB %d, error %d", lnum, err); + return; + } + while (1) { + offs = c->leb_size - len; + if (!is_a_node(c, buf, len)) { + int pad_len; + + pad_len = get_pad_len(c, buf, len); + if (pad_len) { + printk(KERN_DEBUG "LEB %d:%d, pad %d bytes\n", + lnum, offs, pad_len); + buf += pad_len; + len -= pad_len; + continue; + } + if (len) + printk(KERN_DEBUG "LEB %d:%d, free %d bytes\n", + lnum, offs, len); + break; + } + + node_type = get_lpt_node_type(c, buf, &node_num); + switch (node_type) { + case UBIFS_LPT_PNODE: + { + node_len = c->pnode_sz; + if (c->big_lpt) + printk(KERN_DEBUG "LEB %d:%d, pnode num %d\n", + lnum, offs, node_num); + else + printk(KERN_DEBUG "LEB %d:%d, pnode\n", + lnum, offs); + break; + } + case UBIFS_LPT_NNODE: + { + int i; + struct ubifs_nnode nnode; + + node_len = c->nnode_sz; + if (c->big_lpt) + printk(KERN_DEBUG "LEB %d:%d, nnode num %d, ", + lnum, offs, node_num); + else + printk(KERN_DEBUG "LEB %d:%d, nnode, ", + lnum, offs); + err = ubifs_unpack_nnode(c, buf, &nnode); + for (i = 0; i < UBIFS_LPT_FANOUT; i++) { + printk("%d:%d", nnode.nbranch[i].lnum, + nnode.nbranch[i].offs); + if (i != UBIFS_LPT_FANOUT - 1) + printk(", "); + } + printk("\n"); + break; + } + case UBIFS_LPT_LTAB: + node_len = c->ltab_sz; + printk(KERN_DEBUG "LEB %d:%d, ltab\n", + lnum, offs); + break; + case UBIFS_LPT_LSAVE: + node_len = c->lsave_sz; + printk(KERN_DEBUG "LEB %d:%d, lsave len\n", lnum, offs); + break; + default: + ubifs_err("LPT node type %d not recognized", node_type); + return; + } + + buf += node_len; + len -= node_len; + } + + printk(KERN_DEBUG "(pid %d) finish dumping LEB %d\n", + current->pid, lnum); +} + +/** + * dbg_dump_lpt_lebs - dump LPT lebs. + * @c: UBIFS file-system description object + * + * This function dumps all LPT LEBs. The caller has to make sure the LPT is + * locked. + */ +void dbg_dump_lpt_lebs(const struct ubifs_info *c) +{ + int i; + + printk(KERN_DEBUG "(pid %d) start dumping all LPT LEBs\n", + current->pid); + for (i = 0; i < c->lpt_lebs; i++) + dump_lpt_leb(c, i + c->lpt_first); + printk(KERN_DEBUG "(pid %d) finish dumping all LPT LEBs\n", + current->pid); +} + #endif /* CONFIG_UBIFS_FS_DEBUG */ diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 4cf28e85de78..e658b06fd451 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -1622,6 +1622,9 @@ void ubifs_add_lpt_dirt(struct ubifs_info *c, int lnum, int dirty); void ubifs_add_nnode_dirt(struct ubifs_info *c, struct ubifs_nnode *nnode); uint32_t ubifs_unpack_bits(uint8_t **addr, int *pos, int nrbits); struct ubifs_nnode *ubifs_first_nnode(struct ubifs_info *c, int *hght); +/* Needed only in debugging code in lpt_commit.c */ +int ubifs_unpack_nnode(const struct ubifs_info *c, void *buf, + struct ubifs_nnode *nnode); /* lpt_commit.c */ int ubifs_lpt_start_commit(struct ubifs_info *c); -- 2.39.5