2006-10-11 08:20:50 +00:00
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/*
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2006-10-11 08:20:53 +00:00
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* linux/fs/ext4/ioctl.c
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2006-10-11 08:20:50 +00:00
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*
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* Copyright (C) 1993, 1994, 1995
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* Remy Card (card@masi.ibp.fr)
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* Laboratoire MASI - Institut Blaise Pascal
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* Universite Pierre et Marie Curie (Paris VI)
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*/
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#include <linux/fs.h>
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2006-10-11 08:21:01 +00:00
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#include <linux/jbd2.h>
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2006-10-11 08:20:50 +00:00
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#include <linux/capability.h>
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#include <linux/time.h>
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#include <linux/compat.h>
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2008-02-15 22:37:46 +00:00
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#include <linux/mount.h>
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2009-06-17 23:24:03 +00:00
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#include <linux/file.h>
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2006-10-11 08:20:50 +00:00
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#include <asm/uaccess.h>
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2008-04-29 22:13:32 +00:00
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#include "ext4_jbd2.h"
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#include "ext4.h"
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2006-10-11 08:20:50 +00:00
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2012-01-04 22:09:44 +00:00
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#define MAX_32_NUM ((((unsigned long long) 1) << 32) - 1)
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2008-04-30 02:03:54 +00:00
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long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
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2006-10-11 08:20:50 +00:00
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{
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2008-04-30 02:03:54 +00:00
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struct inode *inode = filp->f_dentry->d_inode;
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2011-09-09 22:36:51 +00:00
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struct super_block *sb = inode->i_sb;
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2006-10-11 08:20:53 +00:00
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struct ext4_inode_info *ei = EXT4_I(inode);
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2006-10-11 08:20:50 +00:00
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unsigned int flags;
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2008-09-09 02:25:24 +00:00
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ext4_debug("cmd = %u, arg = %lu\n", cmd, arg);
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2006-10-11 08:20:50 +00:00
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switch (cmd) {
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2006-10-11 08:20:53 +00:00
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case EXT4_IOC_GETFLAGS:
|
2007-07-18 13:24:20 +00:00
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ext4_get_inode_flags(ei);
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2006-10-11 08:20:53 +00:00
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flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
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2006-10-11 08:20:50 +00:00
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return put_user(flags, (int __user *) arg);
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2006-10-11 08:20:53 +00:00
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case EXT4_IOC_SETFLAGS: {
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2006-10-11 08:20:50 +00:00
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handle_t *handle = NULL;
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2008-10-09 03:34:06 +00:00
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int err, migrate = 0;
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2006-10-11 08:20:53 +00:00
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struct ext4_iloc iloc;
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2012-06-01 03:46:01 +00:00
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unsigned int oldflags, mask, i;
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2006-10-11 08:20:50 +00:00
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unsigned int jflag;
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2011-03-23 23:43:26 +00:00
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if (!inode_owner_or_capable(inode))
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2006-10-11 08:20:50 +00:00
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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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|
2011-11-23 16:57:51 +00:00
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err = mnt_want_write_file(filp);
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2008-02-15 22:37:46 +00:00
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if (err)
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return err;
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|
2009-02-15 23:09:20 +00:00
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flags = ext4_mask_flags(inode->i_mode, flags);
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2006-10-11 08:20:50 +00:00
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2008-02-15 22:37:46 +00:00
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err = -EPERM;
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2006-10-11 08:20:50 +00:00
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mutex_lock(&inode->i_mutex);
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2007-11-15 00:58:56 +00:00
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/* Is it quota file? Do not allow user to mess with it */
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2008-02-15 22:37:46 +00:00
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if (IS_NOQUOTA(inode))
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goto flags_out;
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2006-10-11 08:20:50 +00:00
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oldflags = ei->i_flags;
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/* The JOURNAL_DATA flag is modifiable only by root */
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2006-10-11 08:20:53 +00:00
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jflag = flags & EXT4_JOURNAL_DATA_FL;
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2006-10-11 08:20:50 +00:00
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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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* This test looks nicer. Thanks to Pauline Middelink
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*/
|
2006-10-11 08:20:53 +00:00
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if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) {
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2008-02-15 22:37:46 +00:00
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if (!capable(CAP_LINUX_IMMUTABLE))
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goto flags_out;
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2006-10-11 08:20:50 +00:00
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}
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/*
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* The JOURNAL_DATA flag can only be changed by
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* the relevant capability.
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*/
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2006-10-11 08:20:53 +00:00
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if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) {
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2008-02-15 22:37:46 +00:00
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|
if (!capable(CAP_SYS_RESOURCE))
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goto flags_out;
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2006-10-11 08:20:50 +00:00
|
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}
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2008-10-09 03:34:06 +00:00
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if (oldflags & EXT4_EXTENTS_FL) {
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/* We don't support clearning extent flags */
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if (!(flags & EXT4_EXTENTS_FL)) {
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err = -EOPNOTSUPP;
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goto flags_out;
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}
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} else if (flags & EXT4_EXTENTS_FL) {
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/* migrate the file */
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migrate = 1;
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flags &= ~EXT4_EXTENTS_FL;
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}
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2006-10-11 08:20:50 +00:00
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2010-02-24 14:52:53 +00:00
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if (flags & EXT4_EOFBLOCKS_FL) {
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/* we don't support adding EOFBLOCKS flag */
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if (!(oldflags & EXT4_EOFBLOCKS_FL)) {
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err = -EOPNOTSUPP;
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goto flags_out;
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}
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} else if (oldflags & EXT4_EOFBLOCKS_FL)
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ext4_truncate(inode);
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2006-10-11 08:20:53 +00:00
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handle = ext4_journal_start(inode, 1);
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2006-10-11 08:20:50 +00:00
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if (IS_ERR(handle)) {
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2008-02-15 22:37:46 +00:00
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err = PTR_ERR(handle);
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goto flags_out;
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2006-10-11 08:20:50 +00:00
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}
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if (IS_SYNC(inode))
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2009-01-07 05:06:22 +00:00
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ext4_handle_sync(handle);
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2006-10-11 08:20:53 +00:00
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err = ext4_reserve_inode_write(handle, inode, &iloc);
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2006-10-11 08:20:50 +00:00
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if (err)
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goto flags_err;
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2012-06-01 03:46:01 +00:00
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for (i = 0, mask = 1; i < 32; i++, mask <<= 1) {
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if (!(mask & EXT4_FL_USER_MODIFIABLE))
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continue;
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if (mask & flags)
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ext4_set_inode_flag(inode, i);
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else
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ext4_clear_inode_flag(inode, i);
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}
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2006-10-11 08:20:50 +00:00
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2006-10-11 08:20:53 +00:00
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ext4_set_inode_flags(inode);
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2007-07-18 13:15:20 +00:00
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inode->i_ctime = ext4_current_time(inode);
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2006-10-11 08:20:50 +00:00
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2006-10-11 08:20:53 +00:00
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err = ext4_mark_iloc_dirty(handle, inode, &iloc);
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2006-10-11 08:20:50 +00:00
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flags_err:
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2006-10-11 08:20:53 +00:00
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ext4_journal_stop(handle);
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2008-02-15 22:37:46 +00:00
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if (err)
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goto flags_out;
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2006-10-11 08:20:50 +00:00
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2006-10-11 08:20:53 +00:00
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if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL))
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err = ext4_change_inode_journal_flag(inode, jflag);
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2008-10-09 03:34:06 +00:00
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|
if (err)
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goto flags_out;
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if (migrate)
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err = ext4_ext_migrate(inode);
|
2008-02-15 22:37:46 +00:00
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flags_out:
|
2006-10-11 08:20:50 +00:00
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mutex_unlock(&inode->i_mutex);
|
2011-12-09 13:06:57 +00:00
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|
mnt_drop_write_file(filp);
|
2006-10-11 08:20:50 +00:00
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return err;
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}
|
2006-10-11 08:20:53 +00:00
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case EXT4_IOC_GETVERSION:
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|
case EXT4_IOC_GETVERSION_OLD:
|
2006-10-11 08:20:50 +00:00
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return put_user(inode->i_generation, (int __user *) arg);
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2006-10-11 08:20:53 +00:00
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case EXT4_IOC_SETVERSION:
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case EXT4_IOC_SETVERSION_OLD: {
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2006-10-11 08:20:50 +00:00
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handle_t *handle;
|
2006-10-11 08:20:53 +00:00
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struct ext4_iloc iloc;
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2006-10-11 08:20:50 +00:00
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__u32 generation;
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int err;
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|
2011-03-23 23:43:26 +00:00
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|
if (!inode_owner_or_capable(inode))
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2006-10-11 08:20:50 +00:00
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return -EPERM;
|
2008-02-15 22:37:46 +00:00
|
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|
|
2012-04-29 22:31:10 +00:00
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|
if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb,
|
|
|
|
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
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ext4_warning(sb, "Setting inode version is not "
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|
|
|
"supported with metadata_csum enabled.");
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return -ENOTTY;
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|
|
|
}
|
|
|
|
|
2011-11-23 16:57:51 +00:00
|
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|
err = mnt_want_write_file(filp);
|
2008-02-15 22:37:46 +00:00
|
|
|
if (err)
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|
return err;
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|
|
|
if (get_user(generation, (int __user *) arg)) {
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|
err = -EFAULT;
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|
goto setversion_out;
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}
|
2006-10-11 08:20:50 +00:00
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|
2012-01-03 01:31:52 +00:00
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mutex_lock(&inode->i_mutex);
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2006-10-11 08:20:53 +00:00
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handle = ext4_journal_start(inode, 1);
|
2008-02-15 22:37:46 +00:00
|
|
|
if (IS_ERR(handle)) {
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|
err = PTR_ERR(handle);
|
2012-01-03 01:31:52 +00:00
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|
goto unlock_out;
|
2008-02-15 22:37:46 +00:00
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}
|
2006-10-11 08:20:53 +00:00
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err = ext4_reserve_inode_write(handle, inode, &iloc);
|
2006-10-11 08:20:50 +00:00
|
|
|
if (err == 0) {
|
2007-07-18 13:15:20 +00:00
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|
inode->i_ctime = ext4_current_time(inode);
|
2006-10-11 08:20:50 +00:00
|
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|
inode->i_generation = generation;
|
2006-10-11 08:20:53 +00:00
|
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|
err = ext4_mark_iloc_dirty(handle, inode, &iloc);
|
2006-10-11 08:20:50 +00:00
|
|
|
}
|
2006-10-11 08:20:53 +00:00
|
|
|
ext4_journal_stop(handle);
|
2012-01-03 01:31:52 +00:00
|
|
|
|
|
|
|
unlock_out:
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|
|
|
mutex_unlock(&inode->i_mutex);
|
2008-02-15 22:37:46 +00:00
|
|
|
setversion_out:
|
2011-12-09 13:06:57 +00:00
|
|
|
mnt_drop_write_file(filp);
|
2006-10-11 08:20:50 +00:00
|
|
|
return err;
|
|
|
|
}
|
2006-10-11 08:20:53 +00:00
|
|
|
case EXT4_IOC_GROUP_EXTEND: {
|
|
|
|
ext4_fsblk_t n_blocks_count;
|
2009-07-13 13:30:17 +00:00
|
|
|
int err, err2=0;
|
2006-10-11 08:20:50 +00:00
|
|
|
|
2011-07-27 01:35:44 +00:00
|
|
|
err = ext4_resize_begin(sb);
|
|
|
|
if (err)
|
|
|
|
return err;
|
2006-10-11 08:20:50 +00:00
|
|
|
|
2012-01-04 22:09:52 +00:00
|
|
|
if (get_user(n_blocks_count, (__u32 __user *)arg)) {
|
|
|
|
err = -EFAULT;
|
|
|
|
goto group_extend_out;
|
|
|
|
}
|
2006-10-11 08:20:50 +00:00
|
|
|
|
2011-09-09 22:36:51 +00:00
|
|
|
if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
|
|
|
|
EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
|
|
|
|
ext4_msg(sb, KERN_ERR,
|
|
|
|
"Online resizing not supported with bigalloc");
|
2012-01-04 22:09:52 +00:00
|
|
|
err = -EOPNOTSUPP;
|
|
|
|
goto group_extend_out;
|
2011-09-09 22:36:51 +00:00
|
|
|
}
|
|
|
|
|
2011-11-23 16:57:51 +00:00
|
|
|
err = mnt_want_write_file(filp);
|
2008-02-15 22:37:46 +00:00
|
|
|
if (err)
|
2012-01-04 22:09:52 +00:00
|
|
|
goto group_extend_out;
|
2008-02-15 22:37:46 +00:00
|
|
|
|
2006-10-11 08:20:53 +00:00
|
|
|
err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count);
|
2009-07-13 13:30:17 +00:00
|
|
|
if (EXT4_SB(sb)->s_journal) {
|
|
|
|
jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
|
|
|
|
err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal);
|
|
|
|
jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
|
|
|
|
}
|
2008-10-11 00:29:21 +00:00
|
|
|
if (err == 0)
|
|
|
|
err = err2;
|
2011-12-09 13:06:57 +00:00
|
|
|
mnt_drop_write_file(filp);
|
2012-01-04 22:09:52 +00:00
|
|
|
group_extend_out:
|
2011-07-27 01:35:44 +00:00
|
|
|
ext4_resize_end(sb);
|
2006-10-11 08:20:50 +00:00
|
|
|
return err;
|
|
|
|
}
|
2009-06-17 23:24:03 +00:00
|
|
|
|
|
|
|
case EXT4_IOC_MOVE_EXT: {
|
|
|
|
struct move_extent me;
|
|
|
|
struct file *donor_filp;
|
|
|
|
int err;
|
|
|
|
|
2009-12-07 04:38:31 +00:00
|
|
|
if (!(filp->f_mode & FMODE_READ) ||
|
|
|
|
!(filp->f_mode & FMODE_WRITE))
|
|
|
|
return -EBADF;
|
|
|
|
|
2009-06-17 23:24:03 +00:00
|
|
|
if (copy_from_user(&me,
|
|
|
|
(struct move_extent __user *)arg, sizeof(me)))
|
|
|
|
return -EFAULT;
|
2009-12-07 04:38:31 +00:00
|
|
|
me.moved_len = 0;
|
2009-06-17 23:24:03 +00:00
|
|
|
|
|
|
|
donor_filp = fget(me.donor_fd);
|
|
|
|
if (!donor_filp)
|
|
|
|
return -EBADF;
|
|
|
|
|
2009-12-07 04:38:31 +00:00
|
|
|
if (!(donor_filp->f_mode & FMODE_WRITE)) {
|
|
|
|
err = -EBADF;
|
|
|
|
goto mext_out;
|
2009-06-17 23:24:03 +00:00
|
|
|
}
|
|
|
|
|
2011-09-09 22:36:51 +00:00
|
|
|
if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
|
|
|
|
EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
|
|
|
|
ext4_msg(sb, KERN_ERR,
|
|
|
|
"Online defrag not supported with bigalloc");
|
2012-08-27 01:00:03 +00:00
|
|
|
err = -EOPNOTSUPP;
|
|
|
|
goto mext_out;
|
2011-09-09 22:36:51 +00:00
|
|
|
}
|
|
|
|
|
2011-11-23 16:57:51 +00:00
|
|
|
err = mnt_want_write_file(filp);
|
2009-12-07 04:38:31 +00:00
|
|
|
if (err)
|
|
|
|
goto mext_out;
|
|
|
|
|
2009-06-17 23:24:03 +00:00
|
|
|
err = ext4_move_extents(filp, donor_filp, me.orig_start,
|
|
|
|
me.donor_start, me.len, &me.moved_len);
|
2011-12-09 13:06:57 +00:00
|
|
|
mnt_drop_write_file(filp);
|
2009-06-17 23:24:03 +00:00
|
|
|
|
2010-05-17 11:00:00 +00:00
|
|
|
if (copy_to_user((struct move_extent __user *)arg,
|
2010-03-04 05:39:24 +00:00
|
|
|
&me, sizeof(me)))
|
2009-12-07 04:38:31 +00:00
|
|
|
err = -EFAULT;
|
|
|
|
mext_out:
|
|
|
|
fput(donor_filp);
|
2009-06-17 23:24:03 +00:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2006-10-11 08:20:53 +00:00
|
|
|
case EXT4_IOC_GROUP_ADD: {
|
|
|
|
struct ext4_new_group_data input;
|
2009-07-13 13:30:17 +00:00
|
|
|
int err, err2=0;
|
2006-10-11 08:20:50 +00:00
|
|
|
|
2011-07-27 01:35:44 +00:00
|
|
|
err = ext4_resize_begin(sb);
|
|
|
|
if (err)
|
|
|
|
return err;
|
2006-10-11 08:20:50 +00:00
|
|
|
|
2006-10-11 08:20:53 +00:00
|
|
|
if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg,
|
2012-01-04 22:09:52 +00:00
|
|
|
sizeof(input))) {
|
|
|
|
err = -EFAULT;
|
|
|
|
goto group_add_out;
|
|
|
|
}
|
2006-10-11 08:20:50 +00:00
|
|
|
|
2011-09-09 22:36:51 +00:00
|
|
|
if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
|
|
|
|
EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
|
|
|
|
ext4_msg(sb, KERN_ERR,
|
|
|
|
"Online resizing not supported with bigalloc");
|
2012-01-04 22:09:52 +00:00
|
|
|
err = -EOPNOTSUPP;
|
|
|
|
goto group_add_out;
|
2011-09-09 22:36:51 +00:00
|
|
|
}
|
|
|
|
|
2011-11-23 16:57:51 +00:00
|
|
|
err = mnt_want_write_file(filp);
|
2008-02-15 22:37:46 +00:00
|
|
|
if (err)
|
2012-01-04 22:09:52 +00:00
|
|
|
goto group_add_out;
|
2008-02-15 22:37:46 +00:00
|
|
|
|
2006-10-11 08:20:53 +00:00
|
|
|
err = ext4_group_add(sb, &input);
|
2009-07-13 13:30:17 +00:00
|
|
|
if (EXT4_SB(sb)->s_journal) {
|
|
|
|
jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
|
|
|
|
err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal);
|
|
|
|
jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
|
|
|
|
}
|
2008-10-11 00:29:21 +00:00
|
|
|
if (err == 0)
|
|
|
|
err = err2;
|
2011-12-09 13:06:57 +00:00
|
|
|
mnt_drop_write_file(filp);
|
2012-01-04 22:09:52 +00:00
|
|
|
group_add_out:
|
2011-07-27 01:35:44 +00:00
|
|
|
ext4_resize_end(sb);
|
2006-10-11 08:20:50 +00:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2008-01-29 04:58:26 +00:00
|
|
|
case EXT4_IOC_MIGRATE:
|
2008-09-13 16:52:26 +00:00
|
|
|
{
|
|
|
|
int err;
|
2011-03-23 23:43:26 +00:00
|
|
|
if (!inode_owner_or_capable(inode))
|
2008-09-13 16:52:26 +00:00
|
|
|
return -EACCES;
|
|
|
|
|
2011-11-23 16:57:51 +00:00
|
|
|
err = mnt_want_write_file(filp);
|
2008-09-13 16:52:26 +00:00
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
/*
|
|
|
|
* inode_mutex prevent write and truncate on the file.
|
|
|
|
* Read still goes through. We take i_data_sem in
|
|
|
|
* ext4_ext_swap_inode_data before we switch the
|
|
|
|
* inode format to prevent read.
|
|
|
|
*/
|
|
|
|
mutex_lock(&(inode->i_mutex));
|
|
|
|
err = ext4_ext_migrate(inode);
|
|
|
|
mutex_unlock(&(inode->i_mutex));
|
2011-12-09 13:06:57 +00:00
|
|
|
mnt_drop_write_file(filp);
|
2008-09-13 16:52:26 +00:00
|
|
|
return err;
|
|
|
|
}
|
2008-01-29 04:58:26 +00:00
|
|
|
|
2009-02-26 06:04:07 +00:00
|
|
|
case EXT4_IOC_ALLOC_DA_BLKS:
|
|
|
|
{
|
|
|
|
int err;
|
2011-03-23 23:43:26 +00:00
|
|
|
if (!inode_owner_or_capable(inode))
|
2009-02-26 06:04:07 +00:00
|
|
|
return -EACCES;
|
|
|
|
|
2011-11-23 16:57:51 +00:00
|
|
|
err = mnt_want_write_file(filp);
|
2009-02-26 06:04:07 +00:00
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
err = ext4_alloc_da_blocks(inode);
|
2011-12-09 13:06:57 +00:00
|
|
|
mnt_drop_write_file(filp);
|
2009-02-26 06:04:07 +00:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2012-01-04 22:09:44 +00:00
|
|
|
case EXT4_IOC_RESIZE_FS: {
|
|
|
|
ext4_fsblk_t n_blocks_count;
|
|
|
|
struct super_block *sb = inode->i_sb;
|
|
|
|
int err = 0, err2 = 0;
|
|
|
|
|
|
|
|
if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
|
|
|
|
EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
|
|
|
|
ext4_msg(sb, KERN_ERR,
|
|
|
|
"Online resizing not (yet) supported with bigalloc");
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (EXT4_HAS_INCOMPAT_FEATURE(sb,
|
|
|
|
EXT4_FEATURE_INCOMPAT_META_BG)) {
|
|
|
|
ext4_msg(sb, KERN_ERR,
|
|
|
|
"Online resizing not (yet) supported with meta_bg");
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (copy_from_user(&n_blocks_count, (__u64 __user *)arg,
|
|
|
|
sizeof(__u64))) {
|
|
|
|
return -EFAULT;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (n_blocks_count > MAX_32_NUM &&
|
|
|
|
!EXT4_HAS_INCOMPAT_FEATURE(sb,
|
|
|
|
EXT4_FEATURE_INCOMPAT_64BIT)) {
|
|
|
|
ext4_msg(sb, KERN_ERR,
|
|
|
|
"File system only supports 32-bit block numbers");
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = ext4_resize_begin(sb);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
2012-07-19 07:19:07 +00:00
|
|
|
err = mnt_want_write_file(filp);
|
2012-01-04 22:09:44 +00:00
|
|
|
if (err)
|
|
|
|
goto resizefs_out;
|
|
|
|
|
|
|
|
err = ext4_resize_fs(sb, n_blocks_count);
|
|
|
|
if (EXT4_SB(sb)->s_journal) {
|
|
|
|
jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
|
|
|
|
err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal);
|
|
|
|
jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
|
|
|
|
}
|
|
|
|
if (err == 0)
|
|
|
|
err = err2;
|
2012-07-19 07:19:07 +00:00
|
|
|
mnt_drop_write_file(filp);
|
2012-01-04 22:09:44 +00:00
|
|
|
resizefs_out:
|
|
|
|
ext4_resize_end(sb);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2010-11-20 02:47:07 +00:00
|
|
|
case FITRIM:
|
|
|
|
{
|
2011-02-23 17:42:32 +00:00
|
|
|
struct request_queue *q = bdev_get_queue(sb->s_bdev);
|
2010-11-20 02:47:07 +00:00
|
|
|
struct fstrim_range range;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
|
|
return -EPERM;
|
|
|
|
|
2011-02-23 17:42:32 +00:00
|
|
|
if (!blk_queue_discard(q))
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
2011-09-09 22:36:51 +00:00
|
|
|
if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
|
|
|
|
EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
|
|
|
|
ext4_msg(sb, KERN_ERR,
|
|
|
|
"FITRIM not supported with bigalloc");
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
}
|
|
|
|
|
2011-10-18 14:59:51 +00:00
|
|
|
if (copy_from_user(&range, (struct fstrim_range __user *)arg,
|
2010-11-20 02:47:07 +00:00
|
|
|
sizeof(range)))
|
|
|
|
return -EFAULT;
|
|
|
|
|
2011-02-23 22:49:51 +00:00
|
|
|
range.minlen = max((unsigned int)range.minlen,
|
|
|
|
q->limits.discard_granularity);
|
2010-11-20 02:47:07 +00:00
|
|
|
ret = ext4_trim_fs(sb, &range);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
2011-10-18 14:59:51 +00:00
|
|
|
if (copy_to_user((struct fstrim_range __user *)arg, &range,
|
2010-11-20 02:47:07 +00:00
|
|
|
sizeof(range)))
|
|
|
|
return -EFAULT;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2006-10-11 08:20:50 +00:00
|
|
|
default:
|
|
|
|
return -ENOTTY;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_COMPAT
|
2006-10-11 08:20:53 +00:00
|
|
|
long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
2006-10-11 08:20:50 +00:00
|
|
|
{
|
|
|
|
/* These are just misnamed, they actually get/put from/to user an int */
|
|
|
|
switch (cmd) {
|
2006-10-11 08:20:53 +00:00
|
|
|
case EXT4_IOC32_GETFLAGS:
|
|
|
|
cmd = EXT4_IOC_GETFLAGS;
|
2006-10-11 08:20:50 +00:00
|
|
|
break;
|
2006-10-11 08:20:53 +00:00
|
|
|
case EXT4_IOC32_SETFLAGS:
|
|
|
|
cmd = EXT4_IOC_SETFLAGS;
|
2006-10-11 08:20:50 +00:00
|
|
|
break;
|
2006-10-11 08:20:53 +00:00
|
|
|
case EXT4_IOC32_GETVERSION:
|
|
|
|
cmd = EXT4_IOC_GETVERSION;
|
2006-10-11 08:20:50 +00:00
|
|
|
break;
|
2006-10-11 08:20:53 +00:00
|
|
|
case EXT4_IOC32_SETVERSION:
|
|
|
|
cmd = EXT4_IOC_SETVERSION;
|
2006-10-11 08:20:50 +00:00
|
|
|
break;
|
2006-10-11 08:20:53 +00:00
|
|
|
case EXT4_IOC32_GROUP_EXTEND:
|
|
|
|
cmd = EXT4_IOC_GROUP_EXTEND;
|
2006-10-11 08:20:50 +00:00
|
|
|
break;
|
2006-10-11 08:20:53 +00:00
|
|
|
case EXT4_IOC32_GETVERSION_OLD:
|
|
|
|
cmd = EXT4_IOC_GETVERSION_OLD;
|
2006-10-11 08:20:50 +00:00
|
|
|
break;
|
2006-10-11 08:20:53 +00:00
|
|
|
case EXT4_IOC32_SETVERSION_OLD:
|
|
|
|
cmd = EXT4_IOC_SETVERSION_OLD;
|
2006-10-11 08:20:50 +00:00
|
|
|
break;
|
2006-10-11 08:20:53 +00:00
|
|
|
case EXT4_IOC32_GETRSVSZ:
|
|
|
|
cmd = EXT4_IOC_GETRSVSZ;
|
2006-10-11 08:20:50 +00:00
|
|
|
break;
|
2006-10-11 08:20:53 +00:00
|
|
|
case EXT4_IOC32_SETRSVSZ:
|
|
|
|
cmd = EXT4_IOC_SETRSVSZ;
|
2006-10-11 08:20:50 +00:00
|
|
|
break;
|
2010-05-17 10:00:00 +00:00
|
|
|
case EXT4_IOC32_GROUP_ADD: {
|
|
|
|
struct compat_ext4_new_group_input __user *uinput;
|
|
|
|
struct ext4_new_group_input input;
|
|
|
|
mm_segment_t old_fs;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
uinput = compat_ptr(arg);
|
|
|
|
err = get_user(input.group, &uinput->group);
|
|
|
|
err |= get_user(input.block_bitmap, &uinput->block_bitmap);
|
|
|
|
err |= get_user(input.inode_bitmap, &uinput->inode_bitmap);
|
|
|
|
err |= get_user(input.inode_table, &uinput->inode_table);
|
|
|
|
err |= get_user(input.blocks_count, &uinput->blocks_count);
|
|
|
|
err |= get_user(input.reserved_blocks,
|
|
|
|
&uinput->reserved_blocks);
|
|
|
|
if (err)
|
|
|
|
return -EFAULT;
|
|
|
|
old_fs = get_fs();
|
|
|
|
set_fs(KERNEL_DS);
|
|
|
|
err = ext4_ioctl(file, EXT4_IOC_GROUP_ADD,
|
|
|
|
(unsigned long) &input);
|
|
|
|
set_fs(old_fs);
|
|
|
|
return err;
|
|
|
|
}
|
2010-05-15 04:00:00 +00:00
|
|
|
case EXT4_IOC_MOVE_EXT:
|
2011-03-21 03:16:58 +00:00
|
|
|
case FITRIM:
|
2012-01-04 22:09:44 +00:00
|
|
|
case EXT4_IOC_RESIZE_FS:
|
2010-05-15 04:00:00 +00:00
|
|
|
break;
|
2006-10-11 08:20:50 +00:00
|
|
|
default:
|
|
|
|
return -ENOIOCTLCMD;
|
|
|
|
}
|
2008-04-30 02:03:54 +00:00
|
|
|
return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
|
2006-10-11 08:20:50 +00:00
|
|
|
}
|
|
|
|
#endif
|