#include <linux/capability.h>
#include <linux/time.h>
#include <linux/compat.h>
-#include <linux/smp_lock.h>
#include <linux/mount.h>
+#include <linux/file.h>
#include <asm/uaccess.h>
#include "ext4_jbd2.h"
#include "ext4.h"
if (err)
return err;
- if (!S_ISDIR(inode->i_mode))
- flags &= ~EXT4_DIRSYNC_FL;
+ flags = ext4_mask_flags(inode->i_mode, flags);
err = -EPERM;
mutex_lock(&inode->i_mutex);
flags &= ~EXT4_EXTENTS_FL;
}
+ if (flags & EXT4_EOFBLOCKS_FL) {
+ /* we don't support adding EOFBLOCKS flag */
+ if (!(oldflags & EXT4_EOFBLOCKS_FL)) {
+ err = -EOPNOTSUPP;
+ goto flags_out;
+ }
+ } else if (oldflags & EXT4_EOFBLOCKS_FL)
+ ext4_truncate(inode);
+
handle = ext4_journal_start(inode, 1);
if (IS_ERR(handle)) {
err = PTR_ERR(handle);
case EXT4_IOC_GROUP_EXTEND: {
ext4_fsblk_t n_blocks_count;
struct super_block *sb = inode->i_sb;
- int err, err2;
+ int err, err2=0;
if (!capable(CAP_SYS_RESOURCE))
return -EPERM;
return err;
err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count);
- 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 (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;
mnt_drop_write(filp->f_path.mnt);
return err;
}
+
+ case EXT4_IOC_MOVE_EXT: {
+ struct move_extent me;
+ struct file *donor_filp;
+ int err;
+
+ if (!(filp->f_mode & FMODE_READ) ||
+ !(filp->f_mode & FMODE_WRITE))
+ return -EBADF;
+
+ if (copy_from_user(&me,
+ (struct move_extent __user *)arg, sizeof(me)))
+ return -EFAULT;
+ me.moved_len = 0;
+
+ donor_filp = fget(me.donor_fd);
+ if (!donor_filp)
+ return -EBADF;
+
+ if (!(donor_filp->f_mode & FMODE_WRITE)) {
+ err = -EBADF;
+ goto mext_out;
+ }
+
+ err = mnt_want_write(filp->f_path.mnt);
+ if (err)
+ goto mext_out;
+
+ err = ext4_move_extents(filp, donor_filp, me.orig_start,
+ me.donor_start, me.len, &me.moved_len);
+ mnt_drop_write(filp->f_path.mnt);
+ if (me.moved_len > 0)
+ file_remove_suid(donor_filp);
+
+ if (copy_to_user((struct move_extent __user *)arg,
+ &me, sizeof(me)))
+ err = -EFAULT;
+mext_out:
+ fput(donor_filp);
+ return err;
+ }
+
case EXT4_IOC_GROUP_ADD: {
struct ext4_new_group_data input;
struct super_block *sb = inode->i_sb;
- int err, err2;
+ int err, err2=0;
if (!capable(CAP_SYS_RESOURCE))
return -EPERM;
return err;
err = ext4_group_add(sb, &input);
- 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 (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;
mnt_drop_write(filp->f_path.mnt);
return err;
}
+ case EXT4_IOC_ALLOC_DA_BLKS:
+ {
+ int err;
+ if (!is_owner_or_cap(inode))
+ return -EACCES;
+
+ err = mnt_want_write(filp->f_path.mnt);
+ if (err)
+ return err;
+ err = ext4_alloc_da_blocks(inode);
+ mnt_drop_write(filp->f_path.mnt);
+ return err;
+ }
+
default:
return -ENOTTY;
}
case EXT4_IOC32_SETRSVSZ:
cmd = EXT4_IOC_SETRSVSZ;
break;
- case EXT4_IOC_GROUP_ADD:
+ 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;
+ }
+ case EXT4_IOC_MOVE_EXT:
break;
default:
return -ENOIOCTLCMD;