mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 15:46:39 +07:00
e2c7617ae3
Under normal circumstances nilfs_sync_fs() writes out the super block, which causes a flush of the underlying block device. But this depends on the THE_NILFS_SB_DIRTY flag, which is only set if the pointer to the last segment crosses a segment boundary. So if only a small amount of data is written before the call to nilfs_sync_fs(), no flush of the block device occurs. In the above case an additional call to blkdev_issue_flush() is needed. To prevent unnecessary overhead, the new flag nilfs->ns_flushed_device is introduced, which is cleared whenever new logs are written and set whenever the block device is flushed. For convenience the function nilfs_flush_device() is added, which contains the above logic. Signed-off-by: Andreas Rohner <andreas.rohner@gmx.net> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1380 lines
36 KiB
C
1380 lines
36 KiB
C
/*
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* ioctl.c - NILFS ioctl operations.
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*
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* Copyright (C) 2007, 2008 Nippon Telegraph and Telephone Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Written by Koji Sato <koji@osrg.net>.
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*/
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#include <linux/fs.h>
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#include <linux/wait.h>
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#include <linux/slab.h>
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#include <linux/capability.h> /* capable() */
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#include <linux/uaccess.h> /* copy_from_user(), copy_to_user() */
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#include <linux/vmalloc.h>
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#include <linux/compat.h> /* compat_ptr() */
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#include <linux/mount.h> /* mnt_want_write_file(), mnt_drop_write_file() */
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#include <linux/buffer_head.h>
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#include <linux/nilfs2_fs.h>
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#include "nilfs.h"
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#include "segment.h"
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#include "bmap.h"
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#include "cpfile.h"
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#include "sufile.h"
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#include "dat.h"
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/**
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* nilfs_ioctl_wrap_copy - wrapping function of get/set metadata info
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* @nilfs: nilfs object
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* @argv: vector of arguments from userspace
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* @dir: set of direction flags
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* @dofunc: concrete function of get/set metadata info
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*
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* Description: nilfs_ioctl_wrap_copy() gets/sets metadata info by means of
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* calling dofunc() function on the basis of @argv argument.
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*
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* Return Value: On success, 0 is returned and requested metadata info
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* is copied into userspace. On error, one of the following
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* negative error codes is returned.
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*
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* %-EINVAL - Invalid arguments from userspace.
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*
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* %-ENOMEM - Insufficient amount of memory available.
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*
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* %-EFAULT - Failure during execution of requested operation.
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*/
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static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs,
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struct nilfs_argv *argv, int dir,
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ssize_t (*dofunc)(struct the_nilfs *,
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__u64 *, int,
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void *, size_t, size_t))
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{
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void *buf;
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void __user *base = (void __user *)(unsigned long)argv->v_base;
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size_t maxmembs, total, n;
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ssize_t nr;
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int ret, i;
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__u64 pos, ppos;
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if (argv->v_nmembs == 0)
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return 0;
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if (argv->v_size > PAGE_SIZE)
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return -EINVAL;
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/*
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* Reject pairs of a start item position (argv->v_index) and a
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* total count (argv->v_nmembs) which leads position 'pos' to
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* overflow by the increment at the end of the loop.
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*/
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if (argv->v_index > ~(__u64)0 - argv->v_nmembs)
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return -EINVAL;
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buf = (void *)__get_free_pages(GFP_NOFS, 0);
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if (unlikely(!buf))
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return -ENOMEM;
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maxmembs = PAGE_SIZE / argv->v_size;
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ret = 0;
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total = 0;
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pos = argv->v_index;
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for (i = 0; i < argv->v_nmembs; i += n) {
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n = (argv->v_nmembs - i < maxmembs) ?
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argv->v_nmembs - i : maxmembs;
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if ((dir & _IOC_WRITE) &&
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copy_from_user(buf, base + argv->v_size * i,
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argv->v_size * n)) {
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ret = -EFAULT;
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break;
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}
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ppos = pos;
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nr = dofunc(nilfs, &pos, argv->v_flags, buf, argv->v_size,
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n);
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if (nr < 0) {
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ret = nr;
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break;
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}
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if ((dir & _IOC_READ) &&
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copy_to_user(base + argv->v_size * i, buf,
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argv->v_size * nr)) {
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ret = -EFAULT;
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break;
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}
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total += nr;
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if ((size_t)nr < n)
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break;
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if (pos == ppos)
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pos += n;
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}
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argv->v_nmembs = total;
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free_pages((unsigned long)buf, 0);
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return ret;
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}
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/**
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* nilfs_ioctl_getflags - ioctl to support lsattr
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*/
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static int nilfs_ioctl_getflags(struct inode *inode, void __user *argp)
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{
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unsigned int flags = NILFS_I(inode)->i_flags & FS_FL_USER_VISIBLE;
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return put_user(flags, (int __user *)argp);
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}
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/**
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* nilfs_ioctl_setflags - ioctl to support chattr
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*/
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static int nilfs_ioctl_setflags(struct inode *inode, struct file *filp,
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void __user *argp)
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{
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struct nilfs_transaction_info ti;
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unsigned int flags, oldflags;
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int ret;
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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 *)argp))
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return -EFAULT;
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ret = mnt_want_write_file(filp);
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if (ret)
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return ret;
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flags = nilfs_mask_flags(inode->i_mode, flags);
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mutex_lock(&inode->i_mutex);
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oldflags = NILFS_I(inode)->i_flags;
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/*
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* The IMMUTABLE and APPEND_ONLY flags can only be changed by the
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* relevant capability.
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*/
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ret = -EPERM;
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if (((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) &&
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!capable(CAP_LINUX_IMMUTABLE))
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goto out;
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ret = nilfs_transaction_begin(inode->i_sb, &ti, 0);
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if (ret)
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goto out;
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NILFS_I(inode)->i_flags = (oldflags & ~FS_FL_USER_MODIFIABLE) |
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(flags & FS_FL_USER_MODIFIABLE);
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nilfs_set_inode_flags(inode);
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inode->i_ctime = CURRENT_TIME;
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if (IS_SYNC(inode))
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nilfs_set_transaction_flag(NILFS_TI_SYNC);
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nilfs_mark_inode_dirty(inode);
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ret = nilfs_transaction_commit(inode->i_sb);
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out:
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mutex_unlock(&inode->i_mutex);
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mnt_drop_write_file(filp);
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return ret;
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}
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/**
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* nilfs_ioctl_getversion - get info about a file's version (generation number)
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*/
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static int nilfs_ioctl_getversion(struct inode *inode, void __user *argp)
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{
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return put_user(inode->i_generation, (int __user *)argp);
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}
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/**
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* nilfs_ioctl_change_cpmode - change checkpoint mode (checkpoint/snapshot)
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* @inode: inode object
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* @filp: file object
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* @cmd: ioctl's request code
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* @argp: pointer on argument from userspace
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*
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* Description: nilfs_ioctl_change_cpmode() function changes mode of
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* given checkpoint between checkpoint and snapshot state. This ioctl
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* is used in chcp and mkcp utilities.
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*
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* Return Value: On success, 0 is returned and mode of a checkpoint is
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* changed. On error, one of the following negative error codes
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* is returned.
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*
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* %-EPERM - Operation not permitted.
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*
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* %-EFAULT - Failure during checkpoint mode changing.
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*/
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static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp,
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unsigned int cmd, void __user *argp)
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{
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struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
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struct nilfs_transaction_info ti;
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struct nilfs_cpmode cpmode;
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int ret;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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ret = mnt_want_write_file(filp);
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if (ret)
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return ret;
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ret = -EFAULT;
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if (copy_from_user(&cpmode, argp, sizeof(cpmode)))
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goto out;
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mutex_lock(&nilfs->ns_snapshot_mount_mutex);
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nilfs_transaction_begin(inode->i_sb, &ti, 0);
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ret = nilfs_cpfile_change_cpmode(
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nilfs->ns_cpfile, cpmode.cm_cno, cpmode.cm_mode);
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if (unlikely(ret < 0))
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nilfs_transaction_abort(inode->i_sb);
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else
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nilfs_transaction_commit(inode->i_sb); /* never fails */
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mutex_unlock(&nilfs->ns_snapshot_mount_mutex);
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out:
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mnt_drop_write_file(filp);
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return ret;
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}
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/**
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* nilfs_ioctl_delete_checkpoint - remove checkpoint
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* @inode: inode object
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* @filp: file object
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* @cmd: ioctl's request code
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* @argp: pointer on argument from userspace
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*
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* Description: nilfs_ioctl_delete_checkpoint() function removes
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* checkpoint from NILFS2 file system. This ioctl is used in rmcp
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* utility.
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*
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* Return Value: On success, 0 is returned and a checkpoint is
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* removed. On error, one of the following negative error codes
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* is returned.
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*
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* %-EPERM - Operation not permitted.
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*
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* %-EFAULT - Failure during checkpoint removing.
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*/
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static int
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nilfs_ioctl_delete_checkpoint(struct inode *inode, struct file *filp,
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unsigned int cmd, void __user *argp)
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{
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struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
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struct nilfs_transaction_info ti;
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__u64 cno;
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int ret;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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ret = mnt_want_write_file(filp);
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if (ret)
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return ret;
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ret = -EFAULT;
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if (copy_from_user(&cno, argp, sizeof(cno)))
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goto out;
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nilfs_transaction_begin(inode->i_sb, &ti, 0);
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ret = nilfs_cpfile_delete_checkpoint(nilfs->ns_cpfile, cno);
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if (unlikely(ret < 0))
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nilfs_transaction_abort(inode->i_sb);
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else
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nilfs_transaction_commit(inode->i_sb); /* never fails */
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out:
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mnt_drop_write_file(filp);
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return ret;
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}
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/**
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* nilfs_ioctl_do_get_cpinfo - callback method getting info about checkpoints
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* @nilfs: nilfs object
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* @posp: pointer on array of checkpoint's numbers
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* @flags: checkpoint mode (checkpoint or snapshot)
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* @buf: buffer for storing checkponts' info
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* @size: size in bytes of one checkpoint info item in array
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* @nmembs: number of checkpoints in array (numbers and infos)
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*
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* Description: nilfs_ioctl_do_get_cpinfo() function returns info about
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* requested checkpoints. The NILFS_IOCTL_GET_CPINFO ioctl is used in
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* lscp utility and by nilfs_cleanerd daemon.
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*
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* Return value: count of nilfs_cpinfo structures in output buffer.
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*/
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static ssize_t
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nilfs_ioctl_do_get_cpinfo(struct the_nilfs *nilfs, __u64 *posp, int flags,
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void *buf, size_t size, size_t nmembs)
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{
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int ret;
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down_read(&nilfs->ns_segctor_sem);
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ret = nilfs_cpfile_get_cpinfo(nilfs->ns_cpfile, posp, flags, buf,
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size, nmembs);
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up_read(&nilfs->ns_segctor_sem);
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return ret;
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}
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/**
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* nilfs_ioctl_get_cpstat - get checkpoints statistics
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* @inode: inode object
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* @filp: file object
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* @cmd: ioctl's request code
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* @argp: pointer on argument from userspace
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*
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* Description: nilfs_ioctl_get_cpstat() returns information about checkpoints.
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* The NILFS_IOCTL_GET_CPSTAT ioctl is used by lscp, rmcp utilities
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* and by nilfs_cleanerd daemon.
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*
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* Return Value: On success, 0 is returned, and checkpoints information is
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* copied into userspace pointer @argp. On error, one of the following
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* negative error codes is returned.
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*
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* %-EIO - I/O error.
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*
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* %-ENOMEM - Insufficient amount of memory available.
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*
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* %-EFAULT - Failure during getting checkpoints statistics.
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*/
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static int nilfs_ioctl_get_cpstat(struct inode *inode, struct file *filp,
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unsigned int cmd, void __user *argp)
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{
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struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
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struct nilfs_cpstat cpstat;
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int ret;
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down_read(&nilfs->ns_segctor_sem);
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ret = nilfs_cpfile_get_stat(nilfs->ns_cpfile, &cpstat);
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up_read(&nilfs->ns_segctor_sem);
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if (ret < 0)
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return ret;
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if (copy_to_user(argp, &cpstat, sizeof(cpstat)))
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ret = -EFAULT;
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return ret;
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}
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/**
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* nilfs_ioctl_do_get_suinfo - callback method getting segment usage info
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* @nilfs: nilfs object
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* @posp: pointer on array of segment numbers
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* @flags: *not used*
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* @buf: buffer for storing suinfo array
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* @size: size in bytes of one suinfo item in array
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* @nmembs: count of segment numbers and suinfos in array
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*
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* Description: nilfs_ioctl_do_get_suinfo() function returns segment usage
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* info about requested segments. The NILFS_IOCTL_GET_SUINFO ioctl is used
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* in lssu, nilfs_resize utilities and by nilfs_cleanerd daemon.
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*
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* Return value: count of nilfs_suinfo structures in output buffer.
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*/
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static ssize_t
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nilfs_ioctl_do_get_suinfo(struct the_nilfs *nilfs, __u64 *posp, int flags,
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void *buf, size_t size, size_t nmembs)
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{
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int ret;
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down_read(&nilfs->ns_segctor_sem);
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ret = nilfs_sufile_get_suinfo(nilfs->ns_sufile, *posp, buf, size,
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nmembs);
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up_read(&nilfs->ns_segctor_sem);
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return ret;
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}
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/**
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* nilfs_ioctl_get_sustat - get segment usage statistics
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* @inode: inode object
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* @filp: file object
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* @cmd: ioctl's request code
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* @argp: pointer on argument from userspace
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*
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* Description: nilfs_ioctl_get_sustat() returns segment usage statistics.
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* The NILFS_IOCTL_GET_SUSTAT ioctl is used in lssu, nilfs_resize utilities
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* and by nilfs_cleanerd daemon.
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*
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* Return Value: On success, 0 is returned, and segment usage information is
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|
* copied into userspace pointer @argp. On error, one of the following
|
|
* negative error codes is returned.
|
|
*
|
|
* %-EIO - I/O error.
|
|
*
|
|
* %-ENOMEM - Insufficient amount of memory available.
|
|
*
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* %-EFAULT - Failure during getting segment usage statistics.
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|
*/
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static int nilfs_ioctl_get_sustat(struct inode *inode, struct file *filp,
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unsigned int cmd, void __user *argp)
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{
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struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
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struct nilfs_sustat sustat;
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int ret;
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|
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down_read(&nilfs->ns_segctor_sem);
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ret = nilfs_sufile_get_stat(nilfs->ns_sufile, &sustat);
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up_read(&nilfs->ns_segctor_sem);
|
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if (ret < 0)
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return ret;
|
|
|
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if (copy_to_user(argp, &sustat, sizeof(sustat)))
|
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ret = -EFAULT;
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return ret;
|
|
}
|
|
|
|
/**
|
|
* nilfs_ioctl_do_get_vinfo - callback method getting virtual blocks info
|
|
* @nilfs: nilfs object
|
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* @posp: *not used*
|
|
* @flags: *not used*
|
|
* @buf: buffer for storing array of nilfs_vinfo structures
|
|
* @size: size in bytes of one vinfo item in array
|
|
* @nmembs: count of vinfos in array
|
|
*
|
|
* Description: nilfs_ioctl_do_get_vinfo() function returns information
|
|
* on virtual block addresses. The NILFS_IOCTL_GET_VINFO ioctl is used
|
|
* by nilfs_cleanerd daemon.
|
|
*
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|
* Return value: count of nilfs_vinfo structures in output buffer.
|
|
*/
|
|
static ssize_t
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nilfs_ioctl_do_get_vinfo(struct the_nilfs *nilfs, __u64 *posp, int flags,
|
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void *buf, size_t size, size_t nmembs)
|
|
{
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int ret;
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|
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down_read(&nilfs->ns_segctor_sem);
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ret = nilfs_dat_get_vinfo(nilfs->ns_dat, buf, size, nmembs);
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up_read(&nilfs->ns_segctor_sem);
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return ret;
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}
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|
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/**
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|
* nilfs_ioctl_do_get_bdescs - callback method getting disk block descriptors
|
|
* @nilfs: nilfs object
|
|
* @posp: *not used*
|
|
* @flags: *not used*
|
|
* @buf: buffer for storing array of nilfs_bdesc structures
|
|
* @size: size in bytes of one bdesc item in array
|
|
* @nmembs: count of bdescs in array
|
|
*
|
|
* Description: nilfs_ioctl_do_get_bdescs() function returns information
|
|
* about descriptors of disk block numbers. The NILFS_IOCTL_GET_BDESCS ioctl
|
|
* is used by nilfs_cleanerd daemon.
|
|
*
|
|
* Return value: count of nilfs_bdescs structures in output buffer.
|
|
*/
|
|
static ssize_t
|
|
nilfs_ioctl_do_get_bdescs(struct the_nilfs *nilfs, __u64 *posp, int flags,
|
|
void *buf, size_t size, size_t nmembs)
|
|
{
|
|
struct nilfs_bmap *bmap = NILFS_I(nilfs->ns_dat)->i_bmap;
|
|
struct nilfs_bdesc *bdescs = buf;
|
|
int ret, i;
|
|
|
|
down_read(&nilfs->ns_segctor_sem);
|
|
for (i = 0; i < nmembs; i++) {
|
|
ret = nilfs_bmap_lookup_at_level(bmap,
|
|
bdescs[i].bd_offset,
|
|
bdescs[i].bd_level + 1,
|
|
&bdescs[i].bd_blocknr);
|
|
if (ret < 0) {
|
|
if (ret != -ENOENT) {
|
|
up_read(&nilfs->ns_segctor_sem);
|
|
return ret;
|
|
}
|
|
bdescs[i].bd_blocknr = 0;
|
|
}
|
|
}
|
|
up_read(&nilfs->ns_segctor_sem);
|
|
return nmembs;
|
|
}
|
|
|
|
/**
|
|
* nilfs_ioctl_get_bdescs - get disk block descriptors
|
|
* @inode: inode object
|
|
* @filp: file object
|
|
* @cmd: ioctl's request code
|
|
* @argp: pointer on argument from userspace
|
|
*
|
|
* Description: nilfs_ioctl_do_get_bdescs() function returns information
|
|
* about descriptors of disk block numbers. The NILFS_IOCTL_GET_BDESCS ioctl
|
|
* is used by nilfs_cleanerd daemon.
|
|
*
|
|
* Return Value: On success, 0 is returned, and disk block descriptors are
|
|
* copied into userspace pointer @argp. On error, one of the following
|
|
* negative error codes is returned.
|
|
*
|
|
* %-EINVAL - Invalid arguments from userspace.
|
|
*
|
|
* %-EIO - I/O error.
|
|
*
|
|
* %-ENOMEM - Insufficient amount of memory available.
|
|
*
|
|
* %-EFAULT - Failure during getting disk block descriptors.
|
|
*/
|
|
static int nilfs_ioctl_get_bdescs(struct inode *inode, struct file *filp,
|
|
unsigned int cmd, void __user *argp)
|
|
{
|
|
struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
|
|
struct nilfs_argv argv;
|
|
int ret;
|
|
|
|
if (copy_from_user(&argv, argp, sizeof(argv)))
|
|
return -EFAULT;
|
|
|
|
if (argv.v_size != sizeof(struct nilfs_bdesc))
|
|
return -EINVAL;
|
|
|
|
ret = nilfs_ioctl_wrap_copy(nilfs, &argv, _IOC_DIR(cmd),
|
|
nilfs_ioctl_do_get_bdescs);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (copy_to_user(argp, &argv, sizeof(argv)))
|
|
ret = -EFAULT;
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* nilfs_ioctl_move_inode_block - prepare data/node block for moving by GC
|
|
* @inode: inode object
|
|
* @vdesc: descriptor of virtual block number
|
|
* @buffers: list of moving buffers
|
|
*
|
|
* Description: nilfs_ioctl_move_inode_block() function registers data/node
|
|
* buffer in the GC pagecache and submit read request.
|
|
*
|
|
* Return Value: On success, 0 is returned. On error, one of the following
|
|
* negative error codes is returned.
|
|
*
|
|
* %-EIO - I/O error.
|
|
*
|
|
* %-ENOMEM - Insufficient amount of memory available.
|
|
*
|
|
* %-ENOENT - Requested block doesn't exist.
|
|
*
|
|
* %-EEXIST - Blocks conflict is detected.
|
|
*/
|
|
static int nilfs_ioctl_move_inode_block(struct inode *inode,
|
|
struct nilfs_vdesc *vdesc,
|
|
struct list_head *buffers)
|
|
{
|
|
struct buffer_head *bh;
|
|
int ret;
|
|
|
|
if (vdesc->vd_flags == 0)
|
|
ret = nilfs_gccache_submit_read_data(
|
|
inode, vdesc->vd_offset, vdesc->vd_blocknr,
|
|
vdesc->vd_vblocknr, &bh);
|
|
else
|
|
ret = nilfs_gccache_submit_read_node(
|
|
inode, vdesc->vd_blocknr, vdesc->vd_vblocknr, &bh);
|
|
|
|
if (unlikely(ret < 0)) {
|
|
if (ret == -ENOENT)
|
|
printk(KERN_CRIT
|
|
"%s: invalid virtual block address (%s): "
|
|
"ino=%llu, cno=%llu, offset=%llu, "
|
|
"blocknr=%llu, vblocknr=%llu\n",
|
|
__func__, vdesc->vd_flags ? "node" : "data",
|
|
(unsigned long long)vdesc->vd_ino,
|
|
(unsigned long long)vdesc->vd_cno,
|
|
(unsigned long long)vdesc->vd_offset,
|
|
(unsigned long long)vdesc->vd_blocknr,
|
|
(unsigned long long)vdesc->vd_vblocknr);
|
|
return ret;
|
|
}
|
|
if (unlikely(!list_empty(&bh->b_assoc_buffers))) {
|
|
printk(KERN_CRIT "%s: conflicting %s buffer: ino=%llu, "
|
|
"cno=%llu, offset=%llu, blocknr=%llu, vblocknr=%llu\n",
|
|
__func__, vdesc->vd_flags ? "node" : "data",
|
|
(unsigned long long)vdesc->vd_ino,
|
|
(unsigned long long)vdesc->vd_cno,
|
|
(unsigned long long)vdesc->vd_offset,
|
|
(unsigned long long)vdesc->vd_blocknr,
|
|
(unsigned long long)vdesc->vd_vblocknr);
|
|
brelse(bh);
|
|
return -EEXIST;
|
|
}
|
|
list_add_tail(&bh->b_assoc_buffers, buffers);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* nilfs_ioctl_move_blocks - move valid inode's blocks during garbage collection
|
|
* @sb: superblock object
|
|
* @argv: vector of arguments from userspace
|
|
* @buf: array of nilfs_vdesc structures
|
|
*
|
|
* Description: nilfs_ioctl_move_blocks() function reads valid data/node
|
|
* blocks that garbage collector specified with the array of nilfs_vdesc
|
|
* structures and stores them into page caches of GC inodes.
|
|
*
|
|
* Return Value: Number of processed nilfs_vdesc structures or
|
|
* error code, otherwise.
|
|
*/
|
|
static int nilfs_ioctl_move_blocks(struct super_block *sb,
|
|
struct nilfs_argv *argv, void *buf)
|
|
{
|
|
size_t nmembs = argv->v_nmembs;
|
|
struct the_nilfs *nilfs = sb->s_fs_info;
|
|
struct inode *inode;
|
|
struct nilfs_vdesc *vdesc;
|
|
struct buffer_head *bh, *n;
|
|
LIST_HEAD(buffers);
|
|
ino_t ino;
|
|
__u64 cno;
|
|
int i, ret;
|
|
|
|
for (i = 0, vdesc = buf; i < nmembs; ) {
|
|
ino = vdesc->vd_ino;
|
|
cno = vdesc->vd_cno;
|
|
inode = nilfs_iget_for_gc(sb, ino, cno);
|
|
if (IS_ERR(inode)) {
|
|
ret = PTR_ERR(inode);
|
|
goto failed;
|
|
}
|
|
if (list_empty(&NILFS_I(inode)->i_dirty)) {
|
|
/*
|
|
* Add the inode to GC inode list. Garbage Collection
|
|
* is serialized and no two processes manipulate the
|
|
* list simultaneously.
|
|
*/
|
|
igrab(inode);
|
|
list_add(&NILFS_I(inode)->i_dirty,
|
|
&nilfs->ns_gc_inodes);
|
|
}
|
|
|
|
do {
|
|
ret = nilfs_ioctl_move_inode_block(inode, vdesc,
|
|
&buffers);
|
|
if (unlikely(ret < 0)) {
|
|
iput(inode);
|
|
goto failed;
|
|
}
|
|
vdesc++;
|
|
} while (++i < nmembs &&
|
|
vdesc->vd_ino == ino && vdesc->vd_cno == cno);
|
|
|
|
iput(inode); /* The inode still remains in GC inode list */
|
|
}
|
|
|
|
list_for_each_entry_safe(bh, n, &buffers, b_assoc_buffers) {
|
|
ret = nilfs_gccache_wait_and_mark_dirty(bh);
|
|
if (unlikely(ret < 0)) {
|
|
WARN_ON(ret == -EEXIST);
|
|
goto failed;
|
|
}
|
|
list_del_init(&bh->b_assoc_buffers);
|
|
brelse(bh);
|
|
}
|
|
return nmembs;
|
|
|
|
failed:
|
|
list_for_each_entry_safe(bh, n, &buffers, b_assoc_buffers) {
|
|
list_del_init(&bh->b_assoc_buffers);
|
|
brelse(bh);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* nilfs_ioctl_delete_checkpoints - delete checkpoints
|
|
* @nilfs: nilfs object
|
|
* @argv: vector of arguments from userspace
|
|
* @buf: array of periods of checkpoints numbers
|
|
*
|
|
* Description: nilfs_ioctl_delete_checkpoints() function deletes checkpoints
|
|
* in the period from p_start to p_end, excluding p_end itself. The checkpoints
|
|
* which have been already deleted are ignored.
|
|
*
|
|
* Return Value: Number of processed nilfs_period structures or
|
|
* error code, otherwise.
|
|
*
|
|
* %-EIO - I/O error.
|
|
*
|
|
* %-ENOMEM - Insufficient amount of memory available.
|
|
*
|
|
* %-EINVAL - invalid checkpoints.
|
|
*/
|
|
static int nilfs_ioctl_delete_checkpoints(struct the_nilfs *nilfs,
|
|
struct nilfs_argv *argv, void *buf)
|
|
{
|
|
size_t nmembs = argv->v_nmembs;
|
|
struct inode *cpfile = nilfs->ns_cpfile;
|
|
struct nilfs_period *periods = buf;
|
|
int ret, i;
|
|
|
|
for (i = 0; i < nmembs; i++) {
|
|
ret = nilfs_cpfile_delete_checkpoints(
|
|
cpfile, periods[i].p_start, periods[i].p_end);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
return nmembs;
|
|
}
|
|
|
|
/**
|
|
* nilfs_ioctl_free_vblocknrs - free virtual block numbers
|
|
* @nilfs: nilfs object
|
|
* @argv: vector of arguments from userspace
|
|
* @buf: array of virtual block numbers
|
|
*
|
|
* Description: nilfs_ioctl_free_vblocknrs() function frees
|
|
* the virtual block numbers specified by @buf and @argv->v_nmembs.
|
|
*
|
|
* Return Value: Number of processed virtual block numbers or
|
|
* error code, otherwise.
|
|
*
|
|
* %-EIO - I/O error.
|
|
*
|
|
* %-ENOMEM - Insufficient amount of memory available.
|
|
*
|
|
* %-ENOENT - The virtual block number have not been allocated.
|
|
*/
|
|
static int nilfs_ioctl_free_vblocknrs(struct the_nilfs *nilfs,
|
|
struct nilfs_argv *argv, void *buf)
|
|
{
|
|
size_t nmembs = argv->v_nmembs;
|
|
int ret;
|
|
|
|
ret = nilfs_dat_freev(nilfs->ns_dat, buf, nmembs);
|
|
|
|
return (ret < 0) ? ret : nmembs;
|
|
}
|
|
|
|
/**
|
|
* nilfs_ioctl_mark_blocks_dirty - mark blocks dirty
|
|
* @nilfs: nilfs object
|
|
* @argv: vector of arguments from userspace
|
|
* @buf: array of block descriptors
|
|
*
|
|
* Description: nilfs_ioctl_mark_blocks_dirty() function marks
|
|
* metadata file or data blocks as dirty.
|
|
*
|
|
* Return Value: Number of processed block descriptors or
|
|
* error code, otherwise.
|
|
*
|
|
* %-ENOMEM - Insufficient memory available.
|
|
*
|
|
* %-EIO - I/O error
|
|
*
|
|
* %-ENOENT - the specified block does not exist (hole block)
|
|
*/
|
|
static int nilfs_ioctl_mark_blocks_dirty(struct the_nilfs *nilfs,
|
|
struct nilfs_argv *argv, void *buf)
|
|
{
|
|
size_t nmembs = argv->v_nmembs;
|
|
struct nilfs_bmap *bmap = NILFS_I(nilfs->ns_dat)->i_bmap;
|
|
struct nilfs_bdesc *bdescs = buf;
|
|
int ret, i;
|
|
|
|
for (i = 0; i < nmembs; i++) {
|
|
/* XXX: use macro or inline func to check liveness */
|
|
ret = nilfs_bmap_lookup_at_level(bmap,
|
|
bdescs[i].bd_offset,
|
|
bdescs[i].bd_level + 1,
|
|
&bdescs[i].bd_blocknr);
|
|
if (ret < 0) {
|
|
if (ret != -ENOENT)
|
|
return ret;
|
|
bdescs[i].bd_blocknr = 0;
|
|
}
|
|
if (bdescs[i].bd_blocknr != bdescs[i].bd_oblocknr)
|
|
/* skip dead block */
|
|
continue;
|
|
if (bdescs[i].bd_level == 0) {
|
|
ret = nilfs_mdt_mark_block_dirty(nilfs->ns_dat,
|
|
bdescs[i].bd_offset);
|
|
if (ret < 0) {
|
|
WARN_ON(ret == -ENOENT);
|
|
return ret;
|
|
}
|
|
} else {
|
|
ret = nilfs_bmap_mark(bmap, bdescs[i].bd_offset,
|
|
bdescs[i].bd_level);
|
|
if (ret < 0) {
|
|
WARN_ON(ret == -ENOENT);
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
return nmembs;
|
|
}
|
|
|
|
int nilfs_ioctl_prepare_clean_segments(struct the_nilfs *nilfs,
|
|
struct nilfs_argv *argv, void **kbufs)
|
|
{
|
|
const char *msg;
|
|
int ret;
|
|
|
|
ret = nilfs_ioctl_delete_checkpoints(nilfs, &argv[1], kbufs[1]);
|
|
if (ret < 0) {
|
|
/*
|
|
* can safely abort because checkpoints can be removed
|
|
* independently.
|
|
*/
|
|
msg = "cannot delete checkpoints";
|
|
goto failed;
|
|
}
|
|
ret = nilfs_ioctl_free_vblocknrs(nilfs, &argv[2], kbufs[2]);
|
|
if (ret < 0) {
|
|
/*
|
|
* can safely abort because DAT file is updated atomically
|
|
* using a copy-on-write technique.
|
|
*/
|
|
msg = "cannot delete virtual blocks from DAT file";
|
|
goto failed;
|
|
}
|
|
ret = nilfs_ioctl_mark_blocks_dirty(nilfs, &argv[3], kbufs[3]);
|
|
if (ret < 0) {
|
|
/*
|
|
* can safely abort because the operation is nondestructive.
|
|
*/
|
|
msg = "cannot mark copying blocks dirty";
|
|
goto failed;
|
|
}
|
|
return 0;
|
|
|
|
failed:
|
|
printk(KERN_ERR "NILFS: GC failed during preparation: %s: err=%d\n",
|
|
msg, ret);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* nilfs_ioctl_clean_segments - clean segments
|
|
* @inode: inode object
|
|
* @filp: file object
|
|
* @cmd: ioctl's request code
|
|
* @argp: pointer on argument from userspace
|
|
*
|
|
* Description: nilfs_ioctl_clean_segments() function makes garbage
|
|
* collection operation in the environment of requested parameters
|
|
* from userspace. The NILFS_IOCTL_CLEAN_SEGMENTS ioctl is used by
|
|
* nilfs_cleanerd daemon.
|
|
*
|
|
* Return Value: On success, 0 is returned or error code, otherwise.
|
|
*/
|
|
static int nilfs_ioctl_clean_segments(struct inode *inode, struct file *filp,
|
|
unsigned int cmd, void __user *argp)
|
|
{
|
|
struct nilfs_argv argv[5];
|
|
static const size_t argsz[5] = {
|
|
sizeof(struct nilfs_vdesc),
|
|
sizeof(struct nilfs_period),
|
|
sizeof(__u64),
|
|
sizeof(struct nilfs_bdesc),
|
|
sizeof(__u64),
|
|
};
|
|
void __user *base;
|
|
void *kbufs[5];
|
|
struct the_nilfs *nilfs;
|
|
size_t len, nsegs;
|
|
int n, ret;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
ret = mnt_want_write_file(filp);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = -EFAULT;
|
|
if (copy_from_user(argv, argp, sizeof(argv)))
|
|
goto out;
|
|
|
|
ret = -EINVAL;
|
|
nsegs = argv[4].v_nmembs;
|
|
if (argv[4].v_size != argsz[4])
|
|
goto out;
|
|
if (nsegs > UINT_MAX / sizeof(__u64))
|
|
goto out;
|
|
|
|
/*
|
|
* argv[4] points to segment numbers this ioctl cleans. We
|
|
* use kmalloc() for its buffer because memory used for the
|
|
* segment numbers is enough small.
|
|
*/
|
|
kbufs[4] = memdup_user((void __user *)(unsigned long)argv[4].v_base,
|
|
nsegs * sizeof(__u64));
|
|
if (IS_ERR(kbufs[4])) {
|
|
ret = PTR_ERR(kbufs[4]);
|
|
goto out;
|
|
}
|
|
nilfs = inode->i_sb->s_fs_info;
|
|
|
|
for (n = 0; n < 4; n++) {
|
|
ret = -EINVAL;
|
|
if (argv[n].v_size != argsz[n])
|
|
goto out_free;
|
|
|
|
if (argv[n].v_nmembs > nsegs * nilfs->ns_blocks_per_segment)
|
|
goto out_free;
|
|
|
|
if (argv[n].v_nmembs >= UINT_MAX / argv[n].v_size)
|
|
goto out_free;
|
|
|
|
len = argv[n].v_size * argv[n].v_nmembs;
|
|
base = (void __user *)(unsigned long)argv[n].v_base;
|
|
if (len == 0) {
|
|
kbufs[n] = NULL;
|
|
continue;
|
|
}
|
|
|
|
kbufs[n] = vmalloc(len);
|
|
if (!kbufs[n]) {
|
|
ret = -ENOMEM;
|
|
goto out_free;
|
|
}
|
|
if (copy_from_user(kbufs[n], base, len)) {
|
|
ret = -EFAULT;
|
|
vfree(kbufs[n]);
|
|
goto out_free;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* nilfs_ioctl_move_blocks() will call nilfs_iget_for_gc(),
|
|
* which will operates an inode list without blocking.
|
|
* To protect the list from concurrent operations,
|
|
* nilfs_ioctl_move_blocks should be atomic operation.
|
|
*/
|
|
if (test_and_set_bit(THE_NILFS_GC_RUNNING, &nilfs->ns_flags)) {
|
|
ret = -EBUSY;
|
|
goto out_free;
|
|
}
|
|
|
|
ret = nilfs_ioctl_move_blocks(inode->i_sb, &argv[0], kbufs[0]);
|
|
if (ret < 0)
|
|
printk(KERN_ERR "NILFS: GC failed during preparation: "
|
|
"cannot read source blocks: err=%d\n", ret);
|
|
else {
|
|
if (nilfs_sb_need_update(nilfs))
|
|
set_nilfs_discontinued(nilfs);
|
|
ret = nilfs_clean_segments(inode->i_sb, argv, kbufs);
|
|
}
|
|
|
|
nilfs_remove_all_gcinodes(nilfs);
|
|
clear_nilfs_gc_running(nilfs);
|
|
|
|
out_free:
|
|
while (--n >= 0)
|
|
vfree(kbufs[n]);
|
|
kfree(kbufs[4]);
|
|
out:
|
|
mnt_drop_write_file(filp);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* nilfs_ioctl_sync - make a checkpoint
|
|
* @inode: inode object
|
|
* @filp: file object
|
|
* @cmd: ioctl's request code
|
|
* @argp: pointer on argument from userspace
|
|
*
|
|
* Description: nilfs_ioctl_sync() function constructs a logical segment
|
|
* for checkpointing. This function guarantees that all modified data
|
|
* and metadata are written out to the device when it successfully
|
|
* returned.
|
|
*
|
|
* Return Value: On success, 0 is retured. On errors, one of the following
|
|
* negative error code is returned.
|
|
*
|
|
* %-EROFS - Read only filesystem.
|
|
*
|
|
* %-EIO - I/O error
|
|
*
|
|
* %-ENOSPC - No space left on device (only in a panic state).
|
|
*
|
|
* %-ERESTARTSYS - Interrupted.
|
|
*
|
|
* %-ENOMEM - Insufficient memory available.
|
|
*
|
|
* %-EFAULT - Failure during execution of requested operation.
|
|
*/
|
|
static int nilfs_ioctl_sync(struct inode *inode, struct file *filp,
|
|
unsigned int cmd, void __user *argp)
|
|
{
|
|
__u64 cno;
|
|
int ret;
|
|
struct the_nilfs *nilfs;
|
|
|
|
ret = nilfs_construct_segment(inode->i_sb);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
nilfs = inode->i_sb->s_fs_info;
|
|
ret = nilfs_flush_device(nilfs);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (argp != NULL) {
|
|
down_read(&nilfs->ns_segctor_sem);
|
|
cno = nilfs->ns_cno - 1;
|
|
up_read(&nilfs->ns_segctor_sem);
|
|
if (copy_to_user(argp, &cno, sizeof(cno)))
|
|
return -EFAULT;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* nilfs_ioctl_resize - resize NILFS2 volume
|
|
* @inode: inode object
|
|
* @filp: file object
|
|
* @argp: pointer on argument from userspace
|
|
*
|
|
* Return Value: On success, 0 is returned or error code, otherwise.
|
|
*/
|
|
static int nilfs_ioctl_resize(struct inode *inode, struct file *filp,
|
|
void __user *argp)
|
|
{
|
|
__u64 newsize;
|
|
int ret = -EPERM;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
goto out;
|
|
|
|
ret = mnt_want_write_file(filp);
|
|
if (ret)
|
|
goto out;
|
|
|
|
ret = -EFAULT;
|
|
if (copy_from_user(&newsize, argp, sizeof(newsize)))
|
|
goto out_drop_write;
|
|
|
|
ret = nilfs_resize_fs(inode->i_sb, newsize);
|
|
|
|
out_drop_write:
|
|
mnt_drop_write_file(filp);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* nilfs_ioctl_trim_fs() - trim ioctl handle function
|
|
* @inode: inode object
|
|
* @argp: pointer on argument from userspace
|
|
*
|
|
* Decription: nilfs_ioctl_trim_fs is the FITRIM ioctl handle function. It
|
|
* checks the arguments from userspace and calls nilfs_sufile_trim_fs, which
|
|
* performs the actual trim operation.
|
|
*
|
|
* Return Value: On success, 0 is returned or negative error code, otherwise.
|
|
*/
|
|
static int nilfs_ioctl_trim_fs(struct inode *inode, void __user *argp)
|
|
{
|
|
struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
|
|
struct request_queue *q = bdev_get_queue(nilfs->ns_bdev);
|
|
struct fstrim_range range;
|
|
int ret;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (!blk_queue_discard(q))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&range, argp, sizeof(range)))
|
|
return -EFAULT;
|
|
|
|
range.minlen = max_t(u64, range.minlen, q->limits.discard_granularity);
|
|
|
|
down_read(&nilfs->ns_segctor_sem);
|
|
ret = nilfs_sufile_trim_fs(nilfs->ns_sufile, &range);
|
|
up_read(&nilfs->ns_segctor_sem);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (copy_to_user(argp, &range, sizeof(range)))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* nilfs_ioctl_set_alloc_range - limit range of segments to be allocated
|
|
* @inode: inode object
|
|
* @argp: pointer on argument from userspace
|
|
*
|
|
* Decription: nilfs_ioctl_set_alloc_range() function defines lower limit
|
|
* of segments in bytes and upper limit of segments in bytes.
|
|
* The NILFS_IOCTL_SET_ALLOC_RANGE is used by nilfs_resize utility.
|
|
*
|
|
* Return Value: On success, 0 is returned or error code, otherwise.
|
|
*/
|
|
static int nilfs_ioctl_set_alloc_range(struct inode *inode, void __user *argp)
|
|
{
|
|
struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
|
|
__u64 range[2];
|
|
__u64 minseg, maxseg;
|
|
unsigned long segbytes;
|
|
int ret = -EPERM;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
goto out;
|
|
|
|
ret = -EFAULT;
|
|
if (copy_from_user(range, argp, sizeof(__u64[2])))
|
|
goto out;
|
|
|
|
ret = -ERANGE;
|
|
if (range[1] > i_size_read(inode->i_sb->s_bdev->bd_inode))
|
|
goto out;
|
|
|
|
segbytes = nilfs->ns_blocks_per_segment * nilfs->ns_blocksize;
|
|
|
|
minseg = range[0] + segbytes - 1;
|
|
do_div(minseg, segbytes);
|
|
maxseg = NILFS_SB2_OFFSET_BYTES(range[1]);
|
|
do_div(maxseg, segbytes);
|
|
maxseg--;
|
|
|
|
ret = nilfs_sufile_set_alloc_range(nilfs->ns_sufile, minseg, maxseg);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* nilfs_ioctl_get_info - wrapping function of get metadata info
|
|
* @inode: inode object
|
|
* @filp: file object
|
|
* @cmd: ioctl's request code
|
|
* @argp: pointer on argument from userspace
|
|
* @membsz: size of an item in bytes
|
|
* @dofunc: concrete function of getting metadata info
|
|
*
|
|
* Description: nilfs_ioctl_get_info() gets metadata info by means of
|
|
* calling dofunc() function.
|
|
*
|
|
* Return Value: On success, 0 is returned and requested metadata info
|
|
* is copied into userspace. On error, one of the following
|
|
* negative error codes is returned.
|
|
*
|
|
* %-EINVAL - Invalid arguments from userspace.
|
|
*
|
|
* %-ENOMEM - Insufficient amount of memory available.
|
|
*
|
|
* %-EFAULT - Failure during execution of requested operation.
|
|
*/
|
|
static int nilfs_ioctl_get_info(struct inode *inode, struct file *filp,
|
|
unsigned int cmd, void __user *argp,
|
|
size_t membsz,
|
|
ssize_t (*dofunc)(struct the_nilfs *,
|
|
__u64 *, int,
|
|
void *, size_t, size_t))
|
|
|
|
{
|
|
struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
|
|
struct nilfs_argv argv;
|
|
int ret;
|
|
|
|
if (copy_from_user(&argv, argp, sizeof(argv)))
|
|
return -EFAULT;
|
|
|
|
if (argv.v_size < membsz)
|
|
return -EINVAL;
|
|
|
|
ret = nilfs_ioctl_wrap_copy(nilfs, &argv, _IOC_DIR(cmd), dofunc);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (copy_to_user(argp, &argv, sizeof(argv)))
|
|
ret = -EFAULT;
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* nilfs_ioctl_set_suinfo - set segment usage info
|
|
* @inode: inode object
|
|
* @filp: file object
|
|
* @cmd: ioctl's request code
|
|
* @argp: pointer on argument from userspace
|
|
*
|
|
* Description: Expects an array of nilfs_suinfo_update structures
|
|
* encapsulated in nilfs_argv and updates the segment usage info
|
|
* according to the flags in nilfs_suinfo_update.
|
|
*
|
|
* Return Value: On success, 0 is returned. On error, one of the
|
|
* following negative error codes is returned.
|
|
*
|
|
* %-EPERM - Not enough permissions
|
|
*
|
|
* %-EFAULT - Error copying input data
|
|
*
|
|
* %-EIO - I/O error.
|
|
*
|
|
* %-ENOMEM - Insufficient amount of memory available.
|
|
*
|
|
* %-EINVAL - Invalid values in input (segment number, flags or nblocks)
|
|
*/
|
|
static int nilfs_ioctl_set_suinfo(struct inode *inode, struct file *filp,
|
|
unsigned int cmd, void __user *argp)
|
|
{
|
|
struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
|
|
struct nilfs_transaction_info ti;
|
|
struct nilfs_argv argv;
|
|
size_t len;
|
|
void __user *base;
|
|
void *kbuf;
|
|
int ret;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
ret = mnt_want_write_file(filp);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = -EFAULT;
|
|
if (copy_from_user(&argv, argp, sizeof(argv)))
|
|
goto out;
|
|
|
|
ret = -EINVAL;
|
|
if (argv.v_size < sizeof(struct nilfs_suinfo_update))
|
|
goto out;
|
|
|
|
if (argv.v_nmembs > nilfs->ns_nsegments)
|
|
goto out;
|
|
|
|
if (argv.v_nmembs >= UINT_MAX / argv.v_size)
|
|
goto out;
|
|
|
|
len = argv.v_size * argv.v_nmembs;
|
|
if (!len) {
|
|
ret = 0;
|
|
goto out;
|
|
}
|
|
|
|
base = (void __user *)(unsigned long)argv.v_base;
|
|
kbuf = vmalloc(len);
|
|
if (!kbuf) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
if (copy_from_user(kbuf, base, len)) {
|
|
ret = -EFAULT;
|
|
goto out_free;
|
|
}
|
|
|
|
nilfs_transaction_begin(inode->i_sb, &ti, 0);
|
|
ret = nilfs_sufile_set_suinfo(nilfs->ns_sufile, kbuf, argv.v_size,
|
|
argv.v_nmembs);
|
|
if (unlikely(ret < 0))
|
|
nilfs_transaction_abort(inode->i_sb);
|
|
else
|
|
nilfs_transaction_commit(inode->i_sb); /* never fails */
|
|
|
|
out_free:
|
|
vfree(kbuf);
|
|
out:
|
|
mnt_drop_write_file(filp);
|
|
return ret;
|
|
}
|
|
|
|
long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct inode *inode = file_inode(filp);
|
|
void __user *argp = (void __user *)arg;
|
|
|
|
switch (cmd) {
|
|
case FS_IOC_GETFLAGS:
|
|
return nilfs_ioctl_getflags(inode, argp);
|
|
case FS_IOC_SETFLAGS:
|
|
return nilfs_ioctl_setflags(inode, filp, argp);
|
|
case FS_IOC_GETVERSION:
|
|
return nilfs_ioctl_getversion(inode, argp);
|
|
case NILFS_IOCTL_CHANGE_CPMODE:
|
|
return nilfs_ioctl_change_cpmode(inode, filp, cmd, argp);
|
|
case NILFS_IOCTL_DELETE_CHECKPOINT:
|
|
return nilfs_ioctl_delete_checkpoint(inode, filp, cmd, argp);
|
|
case NILFS_IOCTL_GET_CPINFO:
|
|
return nilfs_ioctl_get_info(inode, filp, cmd, argp,
|
|
sizeof(struct nilfs_cpinfo),
|
|
nilfs_ioctl_do_get_cpinfo);
|
|
case NILFS_IOCTL_GET_CPSTAT:
|
|
return nilfs_ioctl_get_cpstat(inode, filp, cmd, argp);
|
|
case NILFS_IOCTL_GET_SUINFO:
|
|
return nilfs_ioctl_get_info(inode, filp, cmd, argp,
|
|
sizeof(struct nilfs_suinfo),
|
|
nilfs_ioctl_do_get_suinfo);
|
|
case NILFS_IOCTL_SET_SUINFO:
|
|
return nilfs_ioctl_set_suinfo(inode, filp, cmd, argp);
|
|
case NILFS_IOCTL_GET_SUSTAT:
|
|
return nilfs_ioctl_get_sustat(inode, filp, cmd, argp);
|
|
case NILFS_IOCTL_GET_VINFO:
|
|
return nilfs_ioctl_get_info(inode, filp, cmd, argp,
|
|
sizeof(struct nilfs_vinfo),
|
|
nilfs_ioctl_do_get_vinfo);
|
|
case NILFS_IOCTL_GET_BDESCS:
|
|
return nilfs_ioctl_get_bdescs(inode, filp, cmd, argp);
|
|
case NILFS_IOCTL_CLEAN_SEGMENTS:
|
|
return nilfs_ioctl_clean_segments(inode, filp, cmd, argp);
|
|
case NILFS_IOCTL_SYNC:
|
|
return nilfs_ioctl_sync(inode, filp, cmd, argp);
|
|
case NILFS_IOCTL_RESIZE:
|
|
return nilfs_ioctl_resize(inode, filp, argp);
|
|
case NILFS_IOCTL_SET_ALLOC_RANGE:
|
|
return nilfs_ioctl_set_alloc_range(inode, argp);
|
|
case FITRIM:
|
|
return nilfs_ioctl_trim_fs(inode, argp);
|
|
default:
|
|
return -ENOTTY;
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_COMPAT
|
|
long nilfs_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
|
|
{
|
|
switch (cmd) {
|
|
case FS_IOC32_GETFLAGS:
|
|
cmd = FS_IOC_GETFLAGS;
|
|
break;
|
|
case FS_IOC32_SETFLAGS:
|
|
cmd = FS_IOC_SETFLAGS;
|
|
break;
|
|
case FS_IOC32_GETVERSION:
|
|
cmd = FS_IOC_GETVERSION;
|
|
break;
|
|
case NILFS_IOCTL_CHANGE_CPMODE:
|
|
case NILFS_IOCTL_DELETE_CHECKPOINT:
|
|
case NILFS_IOCTL_GET_CPINFO:
|
|
case NILFS_IOCTL_GET_CPSTAT:
|
|
case NILFS_IOCTL_GET_SUINFO:
|
|
case NILFS_IOCTL_SET_SUINFO:
|
|
case NILFS_IOCTL_GET_SUSTAT:
|
|
case NILFS_IOCTL_GET_VINFO:
|
|
case NILFS_IOCTL_GET_BDESCS:
|
|
case NILFS_IOCTL_CLEAN_SEGMENTS:
|
|
case NILFS_IOCTL_SYNC:
|
|
case NILFS_IOCTL_RESIZE:
|
|
case NILFS_IOCTL_SET_ALLOC_RANGE:
|
|
case FITRIM:
|
|
break;
|
|
default:
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
return nilfs_ioctl(filp, cmd, (unsigned long)compat_ptr(arg));
|
|
}
|
|
#endif
|