/*
- * linux/fs/ext3/ioctl.c
+ * linux/fs/ext4/ioctl.c
*
* Copyright (C) 1993, 1994, 1995
* Remy Card (card@masi.ibp.fr)
*/
#include <linux/fs.h>
-#include <linux/jbd.h>
+#include <linux/jbd2.h>
#include <linux/capability.h>
-#include <linux/ext3_fs.h>
-#include <linux/ext3_jbd.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"
-int ext3_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
- unsigned long arg)
+long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
- struct ext3_inode_info *ei = EXT3_I(inode);
+ struct inode *inode = filp->f_dentry->d_inode;
+ struct ext4_inode_info *ei = EXT4_I(inode);
unsigned int flags;
- unsigned short rsv_window_size;
- ext3_debug ("cmd = %u, arg = %lu\n", cmd, arg);
+ ext4_debug("cmd = %u, arg = %lu\n", cmd, arg);
switch (cmd) {
- case EXT3_IOC_GETFLAGS:
- flags = ei->i_flags & EXT3_FL_USER_VISIBLE;
+ case EXT4_IOC_GETFLAGS:
+ ext4_get_inode_flags(ei);
+ flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
return put_user(flags, (int __user *) arg);
- case EXT3_IOC_SETFLAGS: {
+ case EXT4_IOC_SETFLAGS: {
handle_t *handle = NULL;
- int err;
- struct ext3_iloc iloc;
+ int err, migrate = 0;
+ struct ext4_iloc iloc;
unsigned int oldflags;
unsigned int jflag;
- if (IS_RDONLY(inode))
- return -EROFS;
-
- if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+ if (!is_owner_or_cap(inode))
return -EACCES;
if (get_user(flags, (int __user *) arg))
return -EFAULT;
- if (!S_ISDIR(inode->i_mode))
- flags &= ~EXT3_DIRSYNC_FL;
+ err = mnt_want_write(filp->f_path.mnt);
+ if (err)
+ return err;
+
+ flags = ext4_mask_flags(inode->i_mode, flags);
+ err = -EPERM;
mutex_lock(&inode->i_mutex);
+ /* Is it quota file? Do not allow user to mess with it */
+ if (IS_NOQUOTA(inode))
+ goto flags_out;
+
oldflags = ei->i_flags;
/* The JOURNAL_DATA flag is modifiable only by root */
- jflag = flags & EXT3_JOURNAL_DATA_FL;
+ jflag = flags & EXT4_JOURNAL_DATA_FL;
/*
* The IMMUTABLE and APPEND_ONLY flags can only be changed by
*
* This test looks nicer. Thanks to Pauline Middelink
*/
- if ((flags ^ oldflags) & (EXT3_APPEND_FL | EXT3_IMMUTABLE_FL)) {
- if (!capable(CAP_LINUX_IMMUTABLE)) {
- mutex_unlock(&inode->i_mutex);
- return -EPERM;
- }
+ if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) {
+ if (!capable(CAP_LINUX_IMMUTABLE))
+ goto flags_out;
}
/*
* The JOURNAL_DATA flag can only be changed by
* the relevant capability.
*/
- if ((jflag ^ oldflags) & (EXT3_JOURNAL_DATA_FL)) {
- if (!capable(CAP_SYS_RESOURCE)) {
- mutex_unlock(&inode->i_mutex);
- return -EPERM;
+ if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) {
+ if (!capable(CAP_SYS_RESOURCE))
+ goto flags_out;
+ }
+ if (oldflags & EXT4_EXTENTS_FL) {
+ /* We don't support clearning extent flags */
+ if (!(flags & EXT4_EXTENTS_FL)) {
+ err = -EOPNOTSUPP;
+ goto flags_out;
}
+ } else if (flags & EXT4_EXTENTS_FL) {
+ /* migrate the file */
+ migrate = 1;
+ 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 = ext3_journal_start(inode, 1);
+ handle = ext4_journal_start(inode, 1);
if (IS_ERR(handle)) {
- mutex_unlock(&inode->i_mutex);
- return PTR_ERR(handle);
+ err = PTR_ERR(handle);
+ goto flags_out;
}
if (IS_SYNC(inode))
- handle->h_sync = 1;
- err = ext3_reserve_inode_write(handle, inode, &iloc);
+ ext4_handle_sync(handle);
+ err = ext4_reserve_inode_write(handle, inode, &iloc);
if (err)
goto flags_err;
- flags = flags & EXT3_FL_USER_MODIFIABLE;
- flags |= oldflags & ~EXT3_FL_USER_MODIFIABLE;
+ flags = flags & EXT4_FL_USER_MODIFIABLE;
+ flags |= oldflags & ~EXT4_FL_USER_MODIFIABLE;
ei->i_flags = flags;
- ext3_set_inode_flags(inode);
- inode->i_ctime = CURRENT_TIME_SEC;
+ ext4_set_inode_flags(inode);
+ inode->i_ctime = ext4_current_time(inode);
- err = ext3_mark_iloc_dirty(handle, inode, &iloc);
+ err = ext4_mark_iloc_dirty(handle, inode, &iloc);
flags_err:
- ext3_journal_stop(handle);
- if (err) {
- mutex_unlock(&inode->i_mutex);
- return err;
- }
+ ext4_journal_stop(handle);
+ if (err)
+ goto flags_out;
- if ((jflag ^ oldflags) & (EXT3_JOURNAL_DATA_FL))
- err = ext3_change_inode_journal_flag(inode, jflag);
+ if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL))
+ err = ext4_change_inode_journal_flag(inode, jflag);
+ if (err)
+ goto flags_out;
+ if (migrate)
+ err = ext4_ext_migrate(inode);
+flags_out:
mutex_unlock(&inode->i_mutex);
+ mnt_drop_write(filp->f_path.mnt);
return err;
}
- case EXT3_IOC_GETVERSION:
- case EXT3_IOC_GETVERSION_OLD:
+ case EXT4_IOC_GETVERSION:
+ case EXT4_IOC_GETVERSION_OLD:
return put_user(inode->i_generation, (int __user *) arg);
- case EXT3_IOC_SETVERSION:
- case EXT3_IOC_SETVERSION_OLD: {
+ case EXT4_IOC_SETVERSION:
+ case EXT4_IOC_SETVERSION_OLD: {
handle_t *handle;
- struct ext3_iloc iloc;
+ struct ext4_iloc iloc;
__u32 generation;
int err;
- if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+ if (!is_owner_or_cap(inode))
return -EPERM;
- if (IS_RDONLY(inode))
- return -EROFS;
- if (get_user(generation, (int __user *) arg))
- return -EFAULT;
- handle = ext3_journal_start(inode, 1);
- if (IS_ERR(handle))
- return PTR_ERR(handle);
- err = ext3_reserve_inode_write(handle, inode, &iloc);
+ err = mnt_want_write(filp->f_path.mnt);
+ if (err)
+ return err;
+ if (get_user(generation, (int __user *) arg)) {
+ err = -EFAULT;
+ goto setversion_out;
+ }
+
+ handle = ext4_journal_start(inode, 1);
+ if (IS_ERR(handle)) {
+ err = PTR_ERR(handle);
+ goto setversion_out;
+ }
+ err = ext4_reserve_inode_write(handle, inode, &iloc);
if (err == 0) {
- inode->i_ctime = CURRENT_TIME_SEC;
+ inode->i_ctime = ext4_current_time(inode);
inode->i_generation = generation;
- err = ext3_mark_iloc_dirty(handle, inode, &iloc);
+ err = ext4_mark_iloc_dirty(handle, inode, &iloc);
}
- ext3_journal_stop(handle);
+ ext4_journal_stop(handle);
+setversion_out:
+ mnt_drop_write(filp->f_path.mnt);
return err;
}
-#ifdef CONFIG_JBD_DEBUG
- case EXT3_IOC_WAIT_FOR_READONLY:
+#ifdef CONFIG_JBD2_DEBUG
+ case EXT4_IOC_WAIT_FOR_READONLY:
/*
* This is racy - by the time we're woken up and running,
* the superblock could be released. And the module could
int ret = 0;
set_current_state(TASK_INTERRUPTIBLE);
- add_wait_queue(&EXT3_SB(sb)->ro_wait_queue, &wait);
- if (timer_pending(&EXT3_SB(sb)->turn_ro_timer)) {
+ add_wait_queue(&EXT4_SB(sb)->ro_wait_queue, &wait);
+ if (timer_pending(&EXT4_SB(sb)->turn_ro_timer)) {
schedule();
ret = 1;
}
- remove_wait_queue(&EXT3_SB(sb)->ro_wait_queue, &wait);
+ remove_wait_queue(&EXT4_SB(sb)->ro_wait_queue, &wait);
return ret;
}
#endif
- case EXT3_IOC_GETRSVSZ:
- if (test_opt(inode->i_sb, RESERVATION)
- && S_ISREG(inode->i_mode)
- && ei->i_block_alloc_info) {
- rsv_window_size = ei->i_block_alloc_info->rsv_window_node.rsv_goal_size;
- return put_user(rsv_window_size, (int __user *)arg);
- }
- return -ENOTTY;
- case EXT3_IOC_SETRSVSZ: {
-
- if (!test_opt(inode->i_sb, RESERVATION) ||!S_ISREG(inode->i_mode))
- return -ENOTTY;
-
- if (IS_RDONLY(inode))
- return -EROFS;
+ case EXT4_IOC_GROUP_EXTEND: {
+ ext4_fsblk_t n_blocks_count;
+ struct super_block *sb = inode->i_sb;
+ int err, err2=0;
- if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
- return -EACCES;
+ if (!capable(CAP_SYS_RESOURCE))
+ return -EPERM;
- if (get_user(rsv_window_size, (int __user *)arg))
+ if (get_user(n_blocks_count, (__u32 __user *)arg))
return -EFAULT;
- if (rsv_window_size > EXT3_MAX_RESERVE_BLOCKS)
- rsv_window_size = EXT3_MAX_RESERVE_BLOCKS;
-
- /*
- * need to allocate reservation structure for this inode
- * before set the window size
- */
- mutex_lock(&ei->truncate_mutex);
- if (!ei->i_block_alloc_info)
- ext3_init_block_alloc_info(inode);
+ err = mnt_want_write(filp->f_path.mnt);
+ if (err)
+ return err;
- if (ei->i_block_alloc_info){
- struct ext3_reserve_window_node *rsv = &ei->i_block_alloc_info->rsv_window_node;
- rsv->rsv_goal_size = rsv_window_size;
+ err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, 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);
}
- mutex_unlock(&ei->truncate_mutex);
- return 0;
+ if (err == 0)
+ err = err2;
+ mnt_drop_write(filp->f_path.mnt);
+
+ return err;
}
- case EXT3_IOC_GROUP_EXTEND: {
- ext3_fsblk_t n_blocks_count;
- struct super_block *sb = inode->i_sb;
- int err;
- if (!capable(CAP_SYS_RESOURCE))
- return -EPERM;
+ case EXT4_IOC_MOVE_EXT: {
+ struct move_extent me;
+ struct file *donor_filp;
+ int err;
- if (IS_RDONLY(inode))
- return -EROFS;
+ if (!(filp->f_mode & FMODE_READ) ||
+ !(filp->f_mode & FMODE_WRITE))
+ return -EBADF;
- if (get_user(n_blocks_count, (__u32 __user *)arg))
+ if (copy_from_user(&me,
+ (struct move_extent __user *)arg, sizeof(me)))
return -EFAULT;
+ me.moved_len = 0;
- err = ext3_group_extend(sb, EXT3_SB(sb)->s_es, n_blocks_count);
- journal_lock_updates(EXT3_SB(sb)->s_journal);
- journal_flush(EXT3_SB(sb)->s_journal);
- journal_unlock_updates(EXT3_SB(sb)->s_journal);
+ 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 EXT3_IOC_GROUP_ADD: {
- struct ext3_new_group_data input;
+
+ case EXT4_IOC_GROUP_ADD: {
+ struct ext4_new_group_data input;
struct super_block *sb = inode->i_sb;
- int err;
+ int err, err2=0;
if (!capable(CAP_SYS_RESOURCE))
return -EPERM;
- if (IS_RDONLY(inode))
- return -EROFS;
-
- if (copy_from_user(&input, (struct ext3_new_group_input __user *)arg,
+ if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg,
sizeof(input)))
return -EFAULT;
- err = ext3_group_add(sb, &input);
- journal_lock_updates(EXT3_SB(sb)->s_journal);
- journal_flush(EXT3_SB(sb)->s_journal);
- journal_unlock_updates(EXT3_SB(sb)->s_journal);
+ err = mnt_want_write(filp->f_path.mnt);
+ if (err)
+ return err;
+
+ err = ext4_group_add(sb, &input);
+ 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_MIGRATE:
+ {
+ int err;
+ if (!is_owner_or_cap(inode))
+ return -EACCES;
+
+ err = mnt_want_write(filp->f_path.mnt);
+ 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));
+ 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;
}
#ifdef CONFIG_COMPAT
-long ext3_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
- struct inode *inode = file->f_dentry->d_inode;
- int ret;
-
/* These are just misnamed, they actually get/put from/to user an int */
switch (cmd) {
- case EXT3_IOC32_GETFLAGS:
- cmd = EXT3_IOC_GETFLAGS;
+ case EXT4_IOC32_GETFLAGS:
+ cmd = EXT4_IOC_GETFLAGS;
break;
- case EXT3_IOC32_SETFLAGS:
- cmd = EXT3_IOC_SETFLAGS;
+ case EXT4_IOC32_SETFLAGS:
+ cmd = EXT4_IOC_SETFLAGS;
break;
- case EXT3_IOC32_GETVERSION:
- cmd = EXT3_IOC_GETVERSION;
+ case EXT4_IOC32_GETVERSION:
+ cmd = EXT4_IOC_GETVERSION;
break;
- case EXT3_IOC32_SETVERSION:
- cmd = EXT3_IOC_SETVERSION;
+ case EXT4_IOC32_SETVERSION:
+ cmd = EXT4_IOC_SETVERSION;
break;
- case EXT3_IOC32_GROUP_EXTEND:
- cmd = EXT3_IOC_GROUP_EXTEND;
+ case EXT4_IOC32_GROUP_EXTEND:
+ cmd = EXT4_IOC_GROUP_EXTEND;
break;
- case EXT3_IOC32_GETVERSION_OLD:
- cmd = EXT3_IOC_GETVERSION_OLD;
+ case EXT4_IOC32_GETVERSION_OLD:
+ cmd = EXT4_IOC_GETVERSION_OLD;
break;
- case EXT3_IOC32_SETVERSION_OLD:
- cmd = EXT3_IOC_SETVERSION_OLD;
+ case EXT4_IOC32_SETVERSION_OLD:
+ cmd = EXT4_IOC_SETVERSION_OLD;
break;
-#ifdef CONFIG_JBD_DEBUG
- case EXT3_IOC32_WAIT_FOR_READONLY:
- cmd = EXT3_IOC_WAIT_FOR_READONLY;
+#ifdef CONFIG_JBD2_DEBUG
+ case EXT4_IOC32_WAIT_FOR_READONLY:
+ cmd = EXT4_IOC_WAIT_FOR_READONLY;
break;
#endif
- case EXT3_IOC32_GETRSVSZ:
- cmd = EXT3_IOC_GETRSVSZ;
+ case EXT4_IOC32_GETRSVSZ:
+ cmd = EXT4_IOC_GETRSVSZ;
break;
- case EXT3_IOC32_SETRSVSZ:
- cmd = EXT3_IOC_SETRSVSZ;
+ case EXT4_IOC32_SETRSVSZ:
+ cmd = EXT4_IOC_SETRSVSZ;
break;
- case EXT3_IOC_GROUP_ADD:
+ case EXT4_IOC_GROUP_ADD:
break;
default:
return -ENOIOCTLCMD;
}
- lock_kernel();
- ret = ext3_ioctl(inode, file, cmd, (unsigned long) compat_ptr(arg));
- unlock_kernel();
- return ret;
+ return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
}
#endif
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff