diff options
| -rw-r--r-- | fs/ubifs/debug.c | 38 |
1 files changed, 20 insertions, 18 deletions
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c index b09ba2dd8b62..6ae9fdcd2020 100644 --- a/fs/ubifs/debug.c +++ b/fs/ubifs/debug.c @@ -103,8 +103,8 @@ static const char *get_dent_type(int type) } } -static void sprintf_key(const struct ubifs_info *c, const union ubifs_key *key, - char *buffer) +static void 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); @@ -112,44 +112,46 @@ static void sprintf_key(const struct ubifs_info *c, const union ubifs_key *key, if (c->key_fmt == UBIFS_SIMPLE_KEY_FMT) { switch (type) { case UBIFS_INO_KEY: - sprintf(p, "(%lu, %s)", (unsigned long)key_inum(c, key), - get_key_type(type)); + 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: - sprintf(p, "(%lu, %s, %#08x)", - (unsigned long)key_inum(c, key), - get_key_type(type), key_hash(c, 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: - sprintf(p, "(%lu, %s, %u)", - (unsigned long)key_inum(c, key), - get_key_type(type), key_block(c, 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: - sprintf(p, "(%lu, %s)", - (unsigned long)key_inum(c, key), - get_key_type(type)); + len -= snprintf(p, len, "(%lu, %s)", + (unsigned long)key_inum(c, key), + get_key_type(type)); break; default: - sprintf(p, "(bad key type: %#08x, %#08x)", - key->u32[0], key->u32[1]); + len -= snprintf(p, len, "(bad key type: %#08x, %#08x)", + key->u32[0], key->u32[1]); } } else - sprintf(p, "bad key format %d", c->key_fmt); + len -= snprintf(p, len, "bad key format %d", c->key_fmt); + ubifs_assert(len > 0); } const char *dbg_key_str0(const struct ubifs_info *c, const union ubifs_key *key) { /* dbg_lock must be held */ - sprintf_key(c, key, dbg_key_buf0); + snprintf_key(c, key, dbg_key_buf0, sizeof(dbg_key_buf0) - 1); return dbg_key_buf0; } const char *dbg_key_str1(const struct ubifs_info *c, const union ubifs_key *key) { /* dbg_lock must be held */ - sprintf_key(c, key, dbg_key_buf1); + snprintf_key(c, key, dbg_key_buf1, sizeof(dbg_key_buf1) - 1); return dbg_key_buf1; } |