mirror of
https://github.com/AsahiLinux/u-boot
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9eefe2a2b3
The U-Boot UBIFS implementation is largely a direct copy from the current Linux version (2.6.29-rc6). As already done in the UBI version we have an "abstraction layer" to redefine or remove some OS calls (e.g. mutex_lock() ...). This makes it possible to use the original Linux code with very little changes. And by this we can better update to later Linux versions. I removed some of the Linux features that are not used in the U-Boot version (e.g. garbage-collection, write support). Signed-off-by: Stefan Roese <sr@denx.de> CC: Artem Bityutskiy <dedekind@infradead.org> CC: Adrian Hunter <ext-Adrian.Hunter@nokia.com>
156 lines
4.1 KiB
C
156 lines
4.1 KiB
C
/*
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* This file is part of UBIFS.
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*
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* Copyright (C) 2006-2008 Nokia Corporation
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 51
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* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Authors: Artem Bityutskiy (Битюцкий Артём)
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* Adrian Hunter
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*/
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/*
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* This file implements most of the debugging stuff which is compiled in only
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* when it is enabled. But some debugging check functions are implemented in
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* corresponding subsystem, just because they are closely related and utilize
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* various local functions of those subsystems.
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*/
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#define UBIFS_DBG_PRESERVE_UBI
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#include "ubifs.h"
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#ifdef CONFIG_UBIFS_FS_DEBUG
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DEFINE_SPINLOCK(dbg_lock);
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static char dbg_key_buf0[128];
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static char dbg_key_buf1[128];
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unsigned int ubifs_msg_flags = UBIFS_MSG_FLAGS_DEFAULT;
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unsigned int ubifs_chk_flags = UBIFS_CHK_FLAGS_DEFAULT;
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unsigned int ubifs_tst_flags;
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module_param_named(debug_msgs, ubifs_msg_flags, uint, S_IRUGO | S_IWUSR);
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module_param_named(debug_chks, ubifs_chk_flags, uint, S_IRUGO | S_IWUSR);
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module_param_named(debug_tsts, ubifs_tst_flags, uint, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(debug_msgs, "Debug message type flags");
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MODULE_PARM_DESC(debug_chks, "Debug check flags");
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MODULE_PARM_DESC(debug_tsts, "Debug special test flags");
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static const char *get_key_type(int type)
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{
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switch (type) {
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case UBIFS_INO_KEY:
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return "inode";
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case UBIFS_DENT_KEY:
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return "direntry";
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case UBIFS_XENT_KEY:
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return "xentry";
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case UBIFS_DATA_KEY:
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return "data";
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case UBIFS_TRUN_KEY:
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return "truncate";
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default:
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return "unknown/invalid key";
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}
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}
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static void sprintf_key(const struct ubifs_info *c, const union ubifs_key *key,
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char *buffer)
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{
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char *p = buffer;
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int type = key_type(c, key);
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if (c->key_fmt == UBIFS_SIMPLE_KEY_FMT) {
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switch (type) {
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case UBIFS_INO_KEY:
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sprintf(p, "(%lu, %s)", (unsigned long)key_inum(c, key),
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get_key_type(type));
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break;
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case UBIFS_DENT_KEY:
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case UBIFS_XENT_KEY:
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sprintf(p, "(%lu, %s, %#08x)",
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(unsigned long)key_inum(c, key),
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get_key_type(type), key_hash(c, key));
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break;
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case UBIFS_DATA_KEY:
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sprintf(p, "(%lu, %s, %u)",
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(unsigned long)key_inum(c, key),
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get_key_type(type), key_block(c, key));
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break;
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case UBIFS_TRUN_KEY:
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sprintf(p, "(%lu, %s)",
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(unsigned long)key_inum(c, key),
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get_key_type(type));
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break;
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default:
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sprintf(p, "(bad key type: %#08x, %#08x)",
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key->u32[0], key->u32[1]);
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}
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} else
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sprintf(p, "bad key format %d", c->key_fmt);
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}
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const char *dbg_key_str0(const struct ubifs_info *c, const union ubifs_key *key)
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{
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/* dbg_lock must be held */
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sprintf_key(c, key, dbg_key_buf0);
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return dbg_key_buf0;
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}
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const char *dbg_key_str1(const struct ubifs_info *c, const union ubifs_key *key)
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{
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/* dbg_lock must be held */
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sprintf_key(c, key, dbg_key_buf1);
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return dbg_key_buf1;
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}
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/**
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* ubifs_debugging_init - initialize UBIFS debugging.
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* @c: UBIFS file-system description object
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*
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* This function initializes debugging-related data for the file system.
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* Returns zero in case of success and a negative error code in case of
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* failure.
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*/
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int ubifs_debugging_init(struct ubifs_info *c)
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{
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c->dbg = kzalloc(sizeof(struct ubifs_debug_info), GFP_KERNEL);
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if (!c->dbg)
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return -ENOMEM;
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c->dbg->buf = vmalloc(c->leb_size);
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if (!c->dbg->buf)
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goto out;
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return 0;
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out:
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kfree(c->dbg);
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return -ENOMEM;
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}
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/**
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* ubifs_debugging_exit - free debugging data.
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* @c: UBIFS file-system description object
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*/
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void ubifs_debugging_exit(struct ubifs_info *c)
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{
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vfree(c->dbg->buf);
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kfree(c->dbg);
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}
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#endif /* CONFIG_UBIFS_FS_DEBUG */
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