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235c362bd0
In the case where we have more than one volumes on different UBI devices, it may be not that easy to tell which volume prints the messages. Add ubi number and volume id in ubifs_msg/warn/error to help debug. These two values are passed by struct ubifs_info. For those where ubifs_info is not initialized yet, ubifs_* is replaced by pr_*. For those where ubifs_info is not avaliable, ubifs_info is passed to the calling function as a const parameter. The output looks like, [ 95.444879] UBIFS (ubi0:1): background thread "ubifs_bgt0_1" started, PID 696 [ 95.484688] UBIFS (ubi0:1): UBIFS: mounted UBI device 0, volume 1, name "test1" [ 95.484694] UBIFS (ubi0:1): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes [ 95.484699] UBIFS (ubi0:1): FS size: 30220288 bytes (28 MiB, 238 LEBs), journal size 1523712 bytes (1 MiB, 12 LEBs) [ 95.484703] UBIFS (ubi0:1): reserved for root: 1427378 bytes (1393 KiB) [ 95.484709] UBIFS (ubi0:1): media format: w4/r0 (latest is w4/r0), UUID 40DFFC0E-70BE-4193-8905-F7D6DFE60B17, small LPT model [ 95.489875] UBIFS (ubi1:0): background thread "ubifs_bgt1_0" started, PID 699 [ 95.529713] UBIFS (ubi1:0): UBIFS: mounted UBI device 1, volume 0, name "test2" [ 95.529718] UBIFS (ubi1:0): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes [ 95.529724] UBIFS (ubi1:0): FS size: 19808256 bytes (18 MiB, 156 LEBs), journal size 1015809 bytes (0 MiB, 8 LEBs) [ 95.529727] UBIFS (ubi1:0): reserved for root: 935592 bytes (913 KiB) [ 95.529733] UBIFS (ubi1:0): media format: w4/r0 (latest is w4/r0), UUID EEB7779D-F419-4CA9-811B-831CAC7233D4, small LPT model [ 954.264767] UBIFS error (ubi1:0 pid 756): ubifs_read_node: bad node type (255 but expected 6) [ 954.367030] UBIFS error (ubi1:0 pid 756): ubifs_read_node: bad node at LEB 0:0, LEB mapping status 1 Signed-off-by: Sheng Yong <shengyong1@huawei.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
206 lines
5.2 KiB
C
206 lines
5.2 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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* Copyright (C) 2006, 2007 University of Szeged, Hungary
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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: Zoltan Sogor
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* Artem Bityutskiy (Битюцкий Артём)
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* Adrian Hunter
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*/
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/* This file implements EXT2-compatible extended attribute ioctl() calls */
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#include <linux/compat.h>
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#include <linux/mount.h>
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#include "ubifs.h"
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/**
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* ubifs_set_inode_flags - set VFS inode flags.
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* @inode: VFS inode to set flags for
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*
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* This function propagates flags from UBIFS inode object to VFS inode object.
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*/
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void ubifs_set_inode_flags(struct inode *inode)
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{
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unsigned int flags = ubifs_inode(inode)->flags;
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inode->i_flags &= ~(S_SYNC | S_APPEND | S_IMMUTABLE | S_DIRSYNC);
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if (flags & UBIFS_SYNC_FL)
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inode->i_flags |= S_SYNC;
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if (flags & UBIFS_APPEND_FL)
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inode->i_flags |= S_APPEND;
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if (flags & UBIFS_IMMUTABLE_FL)
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inode->i_flags |= S_IMMUTABLE;
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if (flags & UBIFS_DIRSYNC_FL)
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inode->i_flags |= S_DIRSYNC;
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}
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/*
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* ioctl2ubifs - convert ioctl inode flags to UBIFS inode flags.
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* @ioctl_flags: flags to convert
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*
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* This function convert ioctl flags (@FS_COMPR_FL, etc) to UBIFS inode flags
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* (@UBIFS_COMPR_FL, etc).
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*/
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static int ioctl2ubifs(int ioctl_flags)
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{
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int ubifs_flags = 0;
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if (ioctl_flags & FS_COMPR_FL)
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ubifs_flags |= UBIFS_COMPR_FL;
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if (ioctl_flags & FS_SYNC_FL)
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ubifs_flags |= UBIFS_SYNC_FL;
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if (ioctl_flags & FS_APPEND_FL)
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ubifs_flags |= UBIFS_APPEND_FL;
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if (ioctl_flags & FS_IMMUTABLE_FL)
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ubifs_flags |= UBIFS_IMMUTABLE_FL;
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if (ioctl_flags & FS_DIRSYNC_FL)
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ubifs_flags |= UBIFS_DIRSYNC_FL;
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return ubifs_flags;
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}
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/*
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* ubifs2ioctl - convert UBIFS inode flags to ioctl inode flags.
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* @ubifs_flags: flags to convert
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*
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* This function convert UBIFS (@UBIFS_COMPR_FL, etc) to ioctl flags
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* (@FS_COMPR_FL, etc).
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*/
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static int ubifs2ioctl(int ubifs_flags)
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{
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int ioctl_flags = 0;
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if (ubifs_flags & UBIFS_COMPR_FL)
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ioctl_flags |= FS_COMPR_FL;
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if (ubifs_flags & UBIFS_SYNC_FL)
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ioctl_flags |= FS_SYNC_FL;
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if (ubifs_flags & UBIFS_APPEND_FL)
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ioctl_flags |= FS_APPEND_FL;
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if (ubifs_flags & UBIFS_IMMUTABLE_FL)
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ioctl_flags |= FS_IMMUTABLE_FL;
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if (ubifs_flags & UBIFS_DIRSYNC_FL)
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ioctl_flags |= FS_DIRSYNC_FL;
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return ioctl_flags;
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}
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static int setflags(struct inode *inode, int flags)
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{
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int oldflags, err, release;
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struct ubifs_inode *ui = ubifs_inode(inode);
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struct ubifs_info *c = inode->i_sb->s_fs_info;
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struct ubifs_budget_req req = { .dirtied_ino = 1,
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.dirtied_ino_d = ui->data_len };
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err = ubifs_budget_space(c, &req);
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if (err)
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return err;
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/*
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* The IMMUTABLE and APPEND_ONLY flags can only be changed by
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* the relevant capability.
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*/
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mutex_lock(&ui->ui_mutex);
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oldflags = ubifs2ioctl(ui->flags);
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if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) {
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if (!capable(CAP_LINUX_IMMUTABLE)) {
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err = -EPERM;
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goto out_unlock;
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}
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}
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ui->flags = ioctl2ubifs(flags);
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ubifs_set_inode_flags(inode);
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inode->i_ctime = ubifs_current_time(inode);
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release = ui->dirty;
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mark_inode_dirty_sync(inode);
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mutex_unlock(&ui->ui_mutex);
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if (release)
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ubifs_release_budget(c, &req);
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if (IS_SYNC(inode))
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err = write_inode_now(inode, 1);
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return err;
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out_unlock:
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ubifs_err(c, "can't modify inode %lu attributes", inode->i_ino);
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mutex_unlock(&ui->ui_mutex);
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ubifs_release_budget(c, &req);
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return err;
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}
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long ubifs_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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{
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int flags, err;
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struct inode *inode = file_inode(file);
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switch (cmd) {
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case FS_IOC_GETFLAGS:
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flags = ubifs2ioctl(ubifs_inode(inode)->flags);
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dbg_gen("get flags: %#x, i_flags %#x", flags, inode->i_flags);
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return put_user(flags, (int __user *) arg);
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case FS_IOC_SETFLAGS: {
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if (IS_RDONLY(inode))
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return -EROFS;
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if (!inode_owner_or_capable(inode))
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return -EACCES;
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if (get_user(flags, (int __user *) arg))
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return -EFAULT;
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if (!S_ISDIR(inode->i_mode))
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flags &= ~FS_DIRSYNC_FL;
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/*
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* Make sure the file-system is read-write and make sure it
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* will not become read-only while we are changing the flags.
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*/
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err = mnt_want_write_file(file);
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if (err)
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return err;
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dbg_gen("set flags: %#x, i_flags %#x", flags, inode->i_flags);
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err = setflags(inode, flags);
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mnt_drop_write_file(file);
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return err;
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}
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default:
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return -ENOTTY;
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}
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}
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#ifdef CONFIG_COMPAT
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long ubifs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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{
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switch (cmd) {
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case FS_IOC32_GETFLAGS:
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cmd = FS_IOC_GETFLAGS;
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break;
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case FS_IOC32_SETFLAGS:
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cmd = FS_IOC_SETFLAGS;
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break;
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default:
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return -ENOIOCTLCMD;
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}
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return ubifs_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
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}
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#endif
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