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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2011-05-25 16:32:42 +0200
committerArtem Bityutskiy <dedekind1@gmail.com>2011-07-04 09:54:26 +0200
commit4315fb4072905e45da94d51e2c1e86fa41c5fc5f (patch)
treee8e5f514cddf7b0d13cfe71897a83019da58da5c /fs/ubifs
parentUBIFS: dump stack when pnode or nnode reading fails (diff)
downloadlinux-4315fb4072905e45da94d51e2c1e86fa41c5fc5f.tar.xz
linux-4315fb4072905e45da94d51e2c1e86fa41c5fc5f.zip
UBIFS: improve inode dumping function
Teach 'dbg_dump_inode()' dump directory entries for directory inodes. This requires few additional changes: 1. The 'c' argument of 'dbg_dump_inode()' cannot be const any more. 2. Users of 'dbg_dump_inode()' should not have 'tnc_mutex' locked. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'fs/ubifs')
-rw-r--r--fs/ubifs/debug.c56
-rw-r--r--fs/ubifs/debug.h6
-rw-r--r--fs/ubifs/tnc.c3
3 files changed, 60 insertions, 5 deletions
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index c9609a63512e..4a2170dce0db 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -91,6 +91,28 @@ static const char *get_key_type(int type)
}
}
+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";
+ }
+}
+
static void sprintf_key(const struct ubifs_info *c, const union ubifs_key *key,
char *buffer)
{
@@ -234,9 +256,13 @@ static void dump_ch(const struct ubifs_ch *ch)
printk(KERN_DEBUG "\tlen %u\n", le32_to_cpu(ch->len));
}
-void dbg_dump_inode(const struct ubifs_info *c, const struct inode *inode)
+void dbg_dump_inode(struct ubifs_info *c, const struct inode *inode)
{
const struct ubifs_inode *ui = ubifs_inode(inode);
+ struct qstr nm = { .name = NULL };
+ union ubifs_key key;
+ struct ubifs_dent_node *dent, *pdent = NULL;
+ int count = 2;
printk(KERN_DEBUG "Dump in-memory inode:");
printk(KERN_DEBUG "\tinode %lu\n", inode->i_ino);
@@ -270,6 +296,32 @@ void dbg_dump_inode(const struct ubifs_info *c, const struct inode *inode)
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);
+
+ if (!S_ISDIR(inode->i_mode))
+ return;
+
+ printk(KERN_DEBUG "List of directory entries:\n");
+ ubifs_assert(!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)
+ printk(KERN_DEBUG "error %ld\n", PTR_ERR(dent));
+ break;
+ }
+
+ printk(KERN_DEBUG "\t%d: %s (%s)\n",
+ count++, dent->name, get_dent_type(dent->type));
+
+ nm.name = dent->name;
+ nm.len = le16_to_cpu(dent->nlen);
+ kfree(pdent);
+ pdent = dent;
+ key_read(c, &dent->key, &key);
+ }
+ kfree(pdent);
}
void dbg_dump_node(const struct ubifs_info *c, const void *node)
@@ -1167,12 +1219,14 @@ int dbg_check_dir_size(struct ubifs_info *c, const struct inode *dir)
"but calculated size is %llu", dir->i_ino,
(unsigned long long)i_size_read(dir),
(unsigned long long)size);
+ dbg_dump_inode(c, dir);
dump_stack();
return -EINVAL;
}
if (dir->i_nlink != nlink) {
ubifs_err("directory inode %lu has nlink %u, but calculated "
"nlink is %u", dir->i_ino, dir->i_nlink, nlink);
+ dbg_dump_inode(c, dir);
dump_stack();
return -EINVAL;
}
diff --git a/fs/ubifs/debug.h b/fs/ubifs/debug.h
index b59c43a4149c..c6ad9ea15e3c 100644
--- a/fs/ubifs/debug.h
+++ b/fs/ubifs/debug.h
@@ -214,7 +214,7 @@ const char *dbg_cstate(int cmt_state);
const char *dbg_jhead(int jhead);
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_inode(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);
@@ -364,7 +364,7 @@ static inline const char *dbg_jhead(int jhead) { return ""; }
static inline const char *
dbg_get_key_dump(const struct ubifs_info *c,
const union ubifs_key *key) { return ""; }
-static inline void dbg_dump_inode(const struct ubifs_info *c,
+static inline void dbg_dump_inode(struct ubifs_info *c,
const struct inode *inode) { return; }
static inline void dbg_dump_node(const struct ubifs_info *c,
const void *node) { return; }
@@ -418,7 +418,7 @@ static inline int dbg_chk_lpt_sz(struct ubifs_info *c,
int action, int len) { return 0; }
static inline int dbg_check_synced_i_size(struct inode *inode) { return 0; }
static inline int dbg_check_dir_size(struct ubifs_info *c,
- const struct inode *dir) { return 0; }
+ const struct inode *dir) { return 0; }
static inline int dbg_check_tnc(struct ubifs_info *c, int extra) { return 0; }
static inline int dbg_check_idx_size(struct ubifs_info *c,
long long idx_size) { return 0; }
diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c
index 91b4213dde84..48b6ee6fa848 100644
--- a/fs/ubifs/tnc.c
+++ b/fs/ubifs/tnc.c
@@ -3337,9 +3337,10 @@ out_dump:
ubifs_err("inode %lu has size %lld, but there are data at offset %lld "
"(data key %s)", (unsigned long)inode->i_ino, size,
((loff_t)block) << UBIFS_BLOCK_SHIFT, DBGKEY(key));
+ mutex_unlock(&c->tnc_mutex);
dbg_dump_inode(c, inode);
dbg_dump_stack();
- err = -EINVAL;
+ return -EINVAL;
out_unlock:
mutex_unlock(&c->tnc_mutex);