2006-10-11 16:20:50 +08:00
|
|
|
/*
|
2006-10-11 16:20:53 +08:00
|
|
|
* linux/fs/ext4/ioctl.c
|
2006-10-11 16:20:50 +08:00
|
|
|
*
|
|
|
|
* Copyright (C) 1993, 1994, 1995
|
|
|
|
* Remy Card (card@masi.ibp.fr)
|
|
|
|
* Laboratoire MASI - Institut Blaise Pascal
|
|
|
|
* Universite Pierre et Marie Curie (Paris VI)
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/fs.h>
|
|
|
|
#include <linux/capability.h>
|
|
|
|
#include <linux/time.h>
|
|
|
|
#include <linux/compat.h>
|
2008-02-16 06:37:46 +08:00
|
|
|
#include <linux/mount.h>
|
2009-06-18 07:24:03 +08:00
|
|
|
#include <linux/file.h>
|
2016-01-09 05:01:22 +08:00
|
|
|
#include <linux/quotaops.h>
|
2016-05-21 08:01:00 +08:00
|
|
|
#include <linux/uuid.h>
|
2006-10-11 16:20:50 +08:00
|
|
|
#include <asm/uaccess.h>
|
2008-04-30 06:13:32 +08:00
|
|
|
#include "ext4_jbd2.h"
|
|
|
|
#include "ext4.h"
|
2006-10-11 16:20:50 +08:00
|
|
|
|
2012-01-05 06:09:44 +08:00
|
|
|
#define MAX_32_NUM ((((unsigned long long) 1) << 32) - 1)
|
|
|
|
|
2013-04-09 00:54:05 +08:00
|
|
|
/**
|
|
|
|
* Swap memory between @a and @b for @len bytes.
|
|
|
|
*
|
|
|
|
* @a: pointer to first memory area
|
|
|
|
* @b: pointer to second memory area
|
|
|
|
* @len: number of bytes to swap
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static void memswap(void *a, void *b, size_t len)
|
|
|
|
{
|
|
|
|
unsigned char *ap, *bp;
|
|
|
|
|
|
|
|
ap = (unsigned char *)a;
|
|
|
|
bp = (unsigned char *)b;
|
|
|
|
while (len-- > 0) {
|
2015-06-13 11:46:33 +08:00
|
|
|
swap(*ap, *bp);
|
2013-04-09 00:54:05 +08:00
|
|
|
ap++;
|
|
|
|
bp++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Swap i_data and associated attributes between @inode1 and @inode2.
|
|
|
|
* This function is used for the primary swap between inode1 and inode2
|
|
|
|
* and also to revert this primary swap in case of errors.
|
|
|
|
*
|
|
|
|
* Therefore you have to make sure, that calling this method twice
|
|
|
|
* will revert all changes.
|
|
|
|
*
|
|
|
|
* @inode1: pointer to first inode
|
|
|
|
* @inode2: pointer to second inode
|
|
|
|
*/
|
|
|
|
static void swap_inode_data(struct inode *inode1, struct inode *inode2)
|
|
|
|
{
|
|
|
|
loff_t isize;
|
|
|
|
struct ext4_inode_info *ei1;
|
|
|
|
struct ext4_inode_info *ei2;
|
|
|
|
|
|
|
|
ei1 = EXT4_I(inode1);
|
|
|
|
ei2 = EXT4_I(inode2);
|
|
|
|
|
|
|
|
memswap(&inode1->i_flags, &inode2->i_flags, sizeof(inode1->i_flags));
|
|
|
|
memswap(&inode1->i_version, &inode2->i_version,
|
|
|
|
sizeof(inode1->i_version));
|
|
|
|
memswap(&inode1->i_blocks, &inode2->i_blocks,
|
|
|
|
sizeof(inode1->i_blocks));
|
|
|
|
memswap(&inode1->i_bytes, &inode2->i_bytes, sizeof(inode1->i_bytes));
|
|
|
|
memswap(&inode1->i_atime, &inode2->i_atime, sizeof(inode1->i_atime));
|
|
|
|
memswap(&inode1->i_mtime, &inode2->i_mtime, sizeof(inode1->i_mtime));
|
|
|
|
|
|
|
|
memswap(ei1->i_data, ei2->i_data, sizeof(ei1->i_data));
|
|
|
|
memswap(&ei1->i_flags, &ei2->i_flags, sizeof(ei1->i_flags));
|
|
|
|
memswap(&ei1->i_disksize, &ei2->i_disksize, sizeof(ei1->i_disksize));
|
2013-08-12 21:29:30 +08:00
|
|
|
ext4_es_remove_extent(inode1, 0, EXT_MAX_BLOCKS);
|
|
|
|
ext4_es_remove_extent(inode2, 0, EXT_MAX_BLOCKS);
|
2013-04-09 00:54:05 +08:00
|
|
|
|
|
|
|
isize = i_size_read(inode1);
|
|
|
|
i_size_write(inode1, i_size_read(inode2));
|
|
|
|
i_size_write(inode2, isize);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Swap the information from the given @inode and the inode
|
|
|
|
* EXT4_BOOT_LOADER_INO. It will basically swap i_data and all other
|
|
|
|
* important fields of the inodes.
|
|
|
|
*
|
|
|
|
* @sb: the super block of the filesystem
|
|
|
|
* @inode: the inode to swap with EXT4_BOOT_LOADER_INO
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static long swap_inode_boot_loader(struct super_block *sb,
|
|
|
|
struct inode *inode)
|
|
|
|
{
|
|
|
|
handle_t *handle;
|
|
|
|
int err;
|
|
|
|
struct inode *inode_bl;
|
|
|
|
struct ext4_inode_info *ei_bl;
|
2014-01-12 02:26:56 +08:00
|
|
|
struct ext4_sb_info *sbi = EXT4_SB(sb);
|
2013-04-09 00:54:05 +08:00
|
|
|
|
2014-02-18 09:44:36 +08:00
|
|
|
if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode))
|
|
|
|
return -EINVAL;
|
2013-04-09 00:54:05 +08:00
|
|
|
|
2014-02-18 09:44:36 +08:00
|
|
|
if (!inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN))
|
|
|
|
return -EPERM;
|
2013-04-09 00:54:05 +08:00
|
|
|
|
|
|
|
inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO);
|
2014-02-18 09:44:36 +08:00
|
|
|
if (IS_ERR(inode_bl))
|
|
|
|
return PTR_ERR(inode_bl);
|
2013-04-09 00:54:05 +08:00
|
|
|
ei_bl = EXT4_I(inode_bl);
|
|
|
|
|
|
|
|
filemap_flush(inode->i_mapping);
|
|
|
|
filemap_flush(inode_bl->i_mapping);
|
|
|
|
|
|
|
|
/* Protect orig inodes against a truncate and make sure,
|
|
|
|
* that only 1 swap_inode_boot_loader is running. */
|
2012-04-19 03:16:33 +08:00
|
|
|
lock_two_nondirectories(inode, inode_bl);
|
2013-04-09 00:54:05 +08:00
|
|
|
|
|
|
|
truncate_inode_pages(&inode->i_data, 0);
|
|
|
|
truncate_inode_pages(&inode_bl->i_data, 0);
|
|
|
|
|
|
|
|
/* Wait for all existing dio workers */
|
|
|
|
ext4_inode_block_unlocked_dio(inode);
|
|
|
|
ext4_inode_block_unlocked_dio(inode_bl);
|
|
|
|
inode_dio_wait(inode);
|
|
|
|
inode_dio_wait(inode_bl);
|
|
|
|
|
|
|
|
handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2);
|
|
|
|
if (IS_ERR(handle)) {
|
|
|
|
err = -EINVAL;
|
2014-02-13 00:48:31 +08:00
|
|
|
goto journal_err_out;
|
2013-04-09 00:54:05 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Protect extent tree against block allocations via delalloc */
|
|
|
|
ext4_double_down_write_data_sem(inode, inode_bl);
|
|
|
|
|
|
|
|
if (inode_bl->i_nlink == 0) {
|
|
|
|
/* this inode has never been used as a BOOT_LOADER */
|
|
|
|
set_nlink(inode_bl, 1);
|
|
|
|
i_uid_write(inode_bl, 0);
|
|
|
|
i_gid_write(inode_bl, 0);
|
|
|
|
inode_bl->i_flags = 0;
|
|
|
|
ei_bl->i_flags = 0;
|
|
|
|
inode_bl->i_version = 1;
|
|
|
|
i_size_write(inode_bl, 0);
|
|
|
|
inode_bl->i_mode = S_IFREG;
|
2015-10-18 04:18:43 +08:00
|
|
|
if (ext4_has_feature_extents(sb)) {
|
2013-04-09 00:54:05 +08:00
|
|
|
ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS);
|
|
|
|
ext4_ext_tree_init(handle, inode_bl);
|
|
|
|
} else
|
|
|
|
memset(ei_bl->i_data, 0, sizeof(ei_bl->i_data));
|
|
|
|
}
|
|
|
|
|
|
|
|
swap_inode_data(inode, inode_bl);
|
|
|
|
|
|
|
|
inode->i_ctime = inode_bl->i_ctime = ext4_current_time(inode);
|
|
|
|
|
|
|
|
spin_lock(&sbi->s_next_gen_lock);
|
|
|
|
inode->i_generation = sbi->s_next_generation++;
|
|
|
|
inode_bl->i_generation = sbi->s_next_generation++;
|
|
|
|
spin_unlock(&sbi->s_next_gen_lock);
|
|
|
|
|
|
|
|
ext4_discard_preallocations(inode);
|
|
|
|
|
|
|
|
err = ext4_mark_inode_dirty(handle, inode);
|
|
|
|
if (err < 0) {
|
|
|
|
ext4_warning(inode->i_sb,
|
|
|
|
"couldn't mark inode #%lu dirty (err %d)",
|
|
|
|
inode->i_ino, err);
|
|
|
|
/* Revert all changes: */
|
|
|
|
swap_inode_data(inode, inode_bl);
|
|
|
|
} else {
|
|
|
|
err = ext4_mark_inode_dirty(handle, inode_bl);
|
|
|
|
if (err < 0) {
|
|
|
|
ext4_warning(inode_bl->i_sb,
|
|
|
|
"couldn't mark inode #%lu dirty (err %d)",
|
|
|
|
inode_bl->i_ino, err);
|
|
|
|
/* Revert all changes: */
|
|
|
|
swap_inode_data(inode, inode_bl);
|
|
|
|
ext4_mark_inode_dirty(handle, inode);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
ext4_journal_stop(handle);
|
|
|
|
ext4_double_up_write_data_sem(inode, inode_bl);
|
|
|
|
|
2014-02-13 00:48:31 +08:00
|
|
|
journal_err_out:
|
2013-04-09 00:54:05 +08:00
|
|
|
ext4_inode_resume_unlocked_dio(inode);
|
|
|
|
ext4_inode_resume_unlocked_dio(inode_bl);
|
2012-04-19 03:16:33 +08:00
|
|
|
unlock_two_nondirectories(inode, inode_bl);
|
2013-04-09 00:54:05 +08:00
|
|
|
iput(inode_bl);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2015-04-11 19:48:01 +08:00
|
|
|
static int uuid_is_zero(__u8 u[16])
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < 16; i++)
|
|
|
|
if (u[i])
|
|
|
|
return 0;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2016-01-09 05:01:22 +08:00
|
|
|
static int ext4_ioctl_setflags(struct inode *inode,
|
|
|
|
unsigned int flags)
|
|
|
|
{
|
|
|
|
struct ext4_inode_info *ei = EXT4_I(inode);
|
|
|
|
handle_t *handle = NULL;
|
ext4: ioctl: fix erroneous return value
The ext4_ioctl_setflags() function which is used in the ioctls
EXT4_IOC_SETFLAGS and EXT4_IOC_FSSETXATTR may return the positive value
EPERM instead of -EPERM in case of error. This bug was introduced by a
recent commit 9b7365fc.
The following program can be used to illustrate the wrong behavior:
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <err.h>
#define FS_IOC_GETFLAGS _IOR('f', 1, long)
#define FS_IOC_SETFLAGS _IOW('f', 2, long)
#define FS_IMMUTABLE_FL 0x00000010
int main(void)
{
int fd;
long flags;
fd = open("file", O_RDWR|O_CREAT, 0600);
if (fd < 0)
err(1, "open");
if (ioctl(fd, FS_IOC_GETFLAGS, &flags) < 0)
err(1, "ioctl: FS_IOC_GETFLAGS");
flags |= FS_IMMUTABLE_FL;
if (ioctl(fd, FS_IOC_SETFLAGS, &flags) < 0)
err(1, "ioctl: FS_IOC_SETFLAGS");
warnx("ioctl returned no error");
return 0;
}
Running it gives the following result:
$ strace -e ioctl ./test
ioctl(3, FS_IOC_GETFLAGS, 0x7ffdbd8bfd38) = 0
ioctl(3, FS_IOC_SETFLAGS, 0x7ffdbd8bfd38) = 1
test: ioctl returned no error
+++ exited with 0 +++
Running the program on a kernel with the bug fixed gives the proper result:
$ strace -e ioctl ./test
ioctl(3, FS_IOC_GETFLAGS, 0x7ffdd2768258) = 0
ioctl(3, FS_IOC_SETFLAGS, 0x7ffdd2768258) = -1 EPERM (Operation not permitted)
test: ioctl: FS_IOC_SETFLAGS: Operation not permitted
+++ exited with 1 +++
Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2016-02-12 12:57:21 +08:00
|
|
|
int err = -EPERM, migrate = 0;
|
2016-01-09 05:01:22 +08:00
|
|
|
struct ext4_iloc iloc;
|
|
|
|
unsigned int oldflags, mask, i;
|
|
|
|
unsigned int jflag;
|
|
|
|
|
|
|
|
/* 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 & EXT4_JOURNAL_DATA_FL;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The IMMUTABLE and APPEND_ONLY flags can only be changed by
|
|
|
|
* the relevant capability.
|
|
|
|
*
|
|
|
|
* This test looks nicer. Thanks to Pauline Middelink
|
|
|
|
*/
|
|
|
|
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) & (EXT4_JOURNAL_DATA_FL)) {
|
|
|
|
if (!capable(CAP_SYS_RESOURCE))
|
|
|
|
goto flags_out;
|
|
|
|
}
|
|
|
|
if ((flags ^ oldflags) & EXT4_EXTENTS_FL)
|
|
|
|
migrate = 1;
|
|
|
|
|
|
|
|
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, EXT4_HT_INODE, 1);
|
|
|
|
if (IS_ERR(handle)) {
|
|
|
|
err = PTR_ERR(handle);
|
|
|
|
goto flags_out;
|
|
|
|
}
|
|
|
|
if (IS_SYNC(inode))
|
|
|
|
ext4_handle_sync(handle);
|
|
|
|
err = ext4_reserve_inode_write(handle, inode, &iloc);
|
|
|
|
if (err)
|
|
|
|
goto flags_err;
|
|
|
|
|
|
|
|
for (i = 0, mask = 1; i < 32; i++, mask <<= 1) {
|
|
|
|
if (!(mask & EXT4_FL_USER_MODIFIABLE))
|
|
|
|
continue;
|
|
|
|
if (mask & flags)
|
|
|
|
ext4_set_inode_flag(inode, i);
|
|
|
|
else
|
|
|
|
ext4_clear_inode_flag(inode, i);
|
|
|
|
}
|
|
|
|
|
|
|
|
ext4_set_inode_flags(inode);
|
|
|
|
inode->i_ctime = ext4_current_time(inode);
|
|
|
|
|
|
|
|
err = ext4_mark_iloc_dirty(handle, inode, &iloc);
|
|
|
|
flags_err:
|
|
|
|
ext4_journal_stop(handle);
|
|
|
|
if (err)
|
|
|
|
goto flags_out;
|
|
|
|
|
|
|
|
if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL))
|
|
|
|
err = ext4_change_inode_journal_flag(inode, jflag);
|
|
|
|
if (err)
|
|
|
|
goto flags_out;
|
|
|
|
if (migrate) {
|
|
|
|
if (flags & EXT4_EXTENTS_FL)
|
|
|
|
err = ext4_ext_migrate(inode);
|
|
|
|
else
|
|
|
|
err = ext4_ind_migrate(inode);
|
|
|
|
}
|
|
|
|
|
|
|
|
flags_out:
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_QUOTA
|
|
|
|
static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
|
|
|
|
{
|
|
|
|
struct inode *inode = file_inode(filp);
|
|
|
|
struct super_block *sb = inode->i_sb;
|
|
|
|
struct ext4_inode_info *ei = EXT4_I(inode);
|
|
|
|
int err, rc;
|
|
|
|
handle_t *handle;
|
|
|
|
kprojid_t kprojid;
|
|
|
|
struct ext4_iloc iloc;
|
|
|
|
struct ext4_inode *raw_inode;
|
2016-07-06 09:33:52 +08:00
|
|
|
struct dquot *transfer_to[MAXQUOTAS] = { };
|
2016-01-09 05:01:22 +08:00
|
|
|
|
|
|
|
if (!EXT4_HAS_RO_COMPAT_FEATURE(sb,
|
|
|
|
EXT4_FEATURE_RO_COMPAT_PROJECT)) {
|
|
|
|
if (projid != EXT4_DEF_PROJID)
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
else
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (EXT4_INODE_SIZE(sb) <= EXT4_GOOD_OLD_INODE_SIZE)
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
|
|
|
kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
|
|
|
|
|
|
|
|
if (projid_eq(kprojid, EXT4_I(inode)->i_projid))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err = mnt_want_write_file(filp);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
|
|
|
err = -EPERM;
|
2016-01-23 04:40:57 +08:00
|
|
|
inode_lock(inode);
|
2016-01-09 05:01:22 +08:00
|
|
|
/* Is it quota file? Do not allow user to mess with it */
|
|
|
|
if (IS_NOQUOTA(inode))
|
|
|
|
goto out_unlock;
|
|
|
|
|
|
|
|
err = ext4_get_inode_loc(inode, &iloc);
|
|
|
|
if (err)
|
|
|
|
goto out_unlock;
|
|
|
|
|
|
|
|
raw_inode = ext4_raw_inode(&iloc);
|
|
|
|
if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) {
|
|
|
|
err = -EOVERFLOW;
|
|
|
|
brelse(iloc.bh);
|
|
|
|
goto out_unlock;
|
|
|
|
}
|
|
|
|
brelse(iloc.bh);
|
|
|
|
|
|
|
|
dquot_initialize(inode);
|
|
|
|
|
|
|
|
handle = ext4_journal_start(inode, EXT4_HT_QUOTA,
|
|
|
|
EXT4_QUOTA_INIT_BLOCKS(sb) +
|
|
|
|
EXT4_QUOTA_DEL_BLOCKS(sb) + 3);
|
|
|
|
if (IS_ERR(handle)) {
|
|
|
|
err = PTR_ERR(handle);
|
|
|
|
goto out_unlock;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = ext4_reserve_inode_write(handle, inode, &iloc);
|
|
|
|
if (err)
|
|
|
|
goto out_stop;
|
|
|
|
|
2016-07-06 09:33:52 +08:00
|
|
|
transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
|
|
|
|
if (!IS_ERR(transfer_to[PRJQUOTA])) {
|
|
|
|
err = __dquot_transfer(inode, transfer_to);
|
|
|
|
dqput(transfer_to[PRJQUOTA]);
|
|
|
|
if (err)
|
|
|
|
goto out_dirty;
|
2016-01-09 05:01:22 +08:00
|
|
|
}
|
2016-07-06 09:33:52 +08:00
|
|
|
|
2016-01-09 05:01:22 +08:00
|
|
|
EXT4_I(inode)->i_projid = kprojid;
|
|
|
|
inode->i_ctime = ext4_current_time(inode);
|
|
|
|
out_dirty:
|
|
|
|
rc = ext4_mark_iloc_dirty(handle, inode, &iloc);
|
|
|
|
if (!err)
|
|
|
|
err = rc;
|
|
|
|
out_stop:
|
|
|
|
ext4_journal_stop(handle);
|
|
|
|
out_unlock:
|
2016-01-23 04:40:57 +08:00
|
|
|
inode_unlock(inode);
|
2016-01-09 05:01:22 +08:00
|
|
|
mnt_drop_write_file(filp);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
|
|
|
|
{
|
|
|
|
if (projid != EXT4_DEF_PROJID)
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Transfer internal flags to xflags */
|
|
|
|
static inline __u32 ext4_iflags_to_xflags(unsigned long iflags)
|
|
|
|
{
|
|
|
|
__u32 xflags = 0;
|
|
|
|
|
|
|
|
if (iflags & EXT4_SYNC_FL)
|
|
|
|
xflags |= FS_XFLAG_SYNC;
|
|
|
|
if (iflags & EXT4_IMMUTABLE_FL)
|
|
|
|
xflags |= FS_XFLAG_IMMUTABLE;
|
|
|
|
if (iflags & EXT4_APPEND_FL)
|
|
|
|
xflags |= FS_XFLAG_APPEND;
|
|
|
|
if (iflags & EXT4_NODUMP_FL)
|
|
|
|
xflags |= FS_XFLAG_NODUMP;
|
|
|
|
if (iflags & EXT4_NOATIME_FL)
|
|
|
|
xflags |= FS_XFLAG_NOATIME;
|
|
|
|
if (iflags & EXT4_PROJINHERIT_FL)
|
|
|
|
xflags |= FS_XFLAG_PROJINHERIT;
|
|
|
|
return xflags;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Transfer xflags flags to internal */
|
|
|
|
static inline unsigned long ext4_xflags_to_iflags(__u32 xflags)
|
|
|
|
{
|
|
|
|
unsigned long iflags = 0;
|
|
|
|
|
|
|
|
if (xflags & FS_XFLAG_SYNC)
|
|
|
|
iflags |= EXT4_SYNC_FL;
|
|
|
|
if (xflags & FS_XFLAG_IMMUTABLE)
|
|
|
|
iflags |= EXT4_IMMUTABLE_FL;
|
|
|
|
if (xflags & FS_XFLAG_APPEND)
|
|
|
|
iflags |= EXT4_APPEND_FL;
|
|
|
|
if (xflags & FS_XFLAG_NODUMP)
|
|
|
|
iflags |= EXT4_NODUMP_FL;
|
|
|
|
if (xflags & FS_XFLAG_NOATIME)
|
|
|
|
iflags |= EXT4_NOATIME_FL;
|
|
|
|
if (xflags & FS_XFLAG_PROJINHERIT)
|
|
|
|
iflags |= EXT4_PROJINHERIT_FL;
|
|
|
|
|
|
|
|
return iflags;
|
|
|
|
}
|
|
|
|
|
2008-04-30 10:03:54 +08:00
|
|
|
long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
|
2006-10-11 16:20:50 +08:00
|
|
|
{
|
2013-01-24 06:07:38 +08:00
|
|
|
struct inode *inode = file_inode(filp);
|
2011-09-10 06:36:51 +08:00
|
|
|
struct super_block *sb = inode->i_sb;
|
2006-10-11 16:20:53 +08:00
|
|
|
struct ext4_inode_info *ei = EXT4_I(inode);
|
2006-10-11 16:20:50 +08:00
|
|
|
unsigned int flags;
|
|
|
|
|
2008-09-09 10:25:24 +08:00
|
|
|
ext4_debug("cmd = %u, arg = %lu\n", cmd, arg);
|
2006-10-11 16:20:50 +08:00
|
|
|
|
|
|
|
switch (cmd) {
|
2006-10-11 16:20:53 +08:00
|
|
|
case EXT4_IOC_GETFLAGS:
|
2007-07-18 21:24:20 +08:00
|
|
|
ext4_get_inode_flags(ei);
|
2006-10-11 16:20:53 +08:00
|
|
|
flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
|
2006-10-11 16:20:50 +08:00
|
|
|
return put_user(flags, (int __user *) arg);
|
2006-10-11 16:20:53 +08:00
|
|
|
case EXT4_IOC_SETFLAGS: {
|
2016-01-09 05:01:22 +08:00
|
|
|
int err;
|
2006-10-11 16:20:50 +08:00
|
|
|
|
2011-03-24 07:43:26 +08:00
|
|
|
if (!inode_owner_or_capable(inode))
|
2006-10-11 16:20:50 +08:00
|
|
|
return -EACCES;
|
|
|
|
|
|
|
|
if (get_user(flags, (int __user *) arg))
|
|
|
|
return -EFAULT;
|
|
|
|
|
2011-11-24 00:57:51 +08:00
|
|
|
err = mnt_want_write_file(filp);
|
2008-02-16 06:37:46 +08:00
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
2009-02-16 07:09:20 +08:00
|
|
|
flags = ext4_mask_flags(inode->i_mode, flags);
|
2006-10-11 16:20:50 +08:00
|
|
|
|
2016-01-23 04:40:57 +08:00
|
|
|
inode_lock(inode);
|
2016-01-09 05:01:22 +08:00
|
|
|
err = ext4_ioctl_setflags(inode, flags);
|
2016-01-23 04:40:57 +08:00
|
|
|
inode_unlock(inode);
|
2011-12-09 21:06:57 +08:00
|
|
|
mnt_drop_write_file(filp);
|
2006-10-11 16:20:50 +08:00
|
|
|
return err;
|
|
|
|
}
|
2006-10-11 16:20:53 +08:00
|
|
|
case EXT4_IOC_GETVERSION:
|
|
|
|
case EXT4_IOC_GETVERSION_OLD:
|
2006-10-11 16:20:50 +08:00
|
|
|
return put_user(inode->i_generation, (int __user *) arg);
|
2006-10-11 16:20:53 +08:00
|
|
|
case EXT4_IOC_SETVERSION:
|
|
|
|
case EXT4_IOC_SETVERSION_OLD: {
|
2006-10-11 16:20:50 +08:00
|
|
|
handle_t *handle;
|
2006-10-11 16:20:53 +08:00
|
|
|
struct ext4_iloc iloc;
|
2006-10-11 16:20:50 +08:00
|
|
|
__u32 generation;
|
|
|
|
int err;
|
|
|
|
|
2011-03-24 07:43:26 +08:00
|
|
|
if (!inode_owner_or_capable(inode))
|
2006-10-11 16:20:50 +08:00
|
|
|
return -EPERM;
|
2008-02-16 06:37:46 +08:00
|
|
|
|
2014-10-13 15:36:16 +08:00
|
|
|
if (ext4_has_metadata_csum(inode->i_sb)) {
|
2012-04-30 06:31:10 +08:00
|
|
|
ext4_warning(sb, "Setting inode version is not "
|
|
|
|
"supported with metadata_csum enabled.");
|
|
|
|
return -ENOTTY;
|
|
|
|
}
|
|
|
|
|
2011-11-24 00:57:51 +08:00
|
|
|
err = mnt_want_write_file(filp);
|
2008-02-16 06:37:46 +08:00
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
if (get_user(generation, (int __user *) arg)) {
|
|
|
|
err = -EFAULT;
|
|
|
|
goto setversion_out;
|
|
|
|
}
|
2006-10-11 16:20:50 +08:00
|
|
|
|
2016-01-23 04:40:57 +08:00
|
|
|
inode_lock(inode);
|
2013-02-09 10:59:22 +08:00
|
|
|
handle = ext4_journal_start(inode, EXT4_HT_INODE, 1);
|
2008-02-16 06:37:46 +08:00
|
|
|
if (IS_ERR(handle)) {
|
|
|
|
err = PTR_ERR(handle);
|
2012-01-03 09:31:52 +08:00
|
|
|
goto unlock_out;
|
2008-02-16 06:37:46 +08:00
|
|
|
}
|
2006-10-11 16:20:53 +08:00
|
|
|
err = ext4_reserve_inode_write(handle, inode, &iloc);
|
2006-10-11 16:20:50 +08:00
|
|
|
if (err == 0) {
|
2007-07-18 21:15:20 +08:00
|
|
|
inode->i_ctime = ext4_current_time(inode);
|
2006-10-11 16:20:50 +08:00
|
|
|
inode->i_generation = generation;
|
2006-10-11 16:20:53 +08:00
|
|
|
err = ext4_mark_iloc_dirty(handle, inode, &iloc);
|
2006-10-11 16:20:50 +08:00
|
|
|
}
|
2006-10-11 16:20:53 +08:00
|
|
|
ext4_journal_stop(handle);
|
2012-01-03 09:31:52 +08:00
|
|
|
|
|
|
|
unlock_out:
|
2016-01-23 04:40:57 +08:00
|
|
|
inode_unlock(inode);
|
2008-02-16 06:37:46 +08:00
|
|
|
setversion_out:
|
2011-12-09 21:06:57 +08:00
|
|
|
mnt_drop_write_file(filp);
|
2006-10-11 16:20:50 +08:00
|
|
|
return err;
|
|
|
|
}
|
2006-10-11 16:20:53 +08:00
|
|
|
case EXT4_IOC_GROUP_EXTEND: {
|
|
|
|
ext4_fsblk_t n_blocks_count;
|
2009-07-13 21:30:17 +08:00
|
|
|
int err, err2=0;
|
2006-10-11 16:20:50 +08:00
|
|
|
|
2011-07-27 09:35:44 +08:00
|
|
|
err = ext4_resize_begin(sb);
|
|
|
|
if (err)
|
|
|
|
return err;
|
2006-10-11 16:20:50 +08:00
|
|
|
|
2012-01-05 06:09:52 +08:00
|
|
|
if (get_user(n_blocks_count, (__u32 __user *)arg)) {
|
|
|
|
err = -EFAULT;
|
|
|
|
goto group_extend_out;
|
|
|
|
}
|
2006-10-11 16:20:50 +08:00
|
|
|
|
2015-10-18 04:18:43 +08:00
|
|
|
if (ext4_has_feature_bigalloc(sb)) {
|
2011-09-10 06:36:51 +08:00
|
|
|
ext4_msg(sb, KERN_ERR,
|
|
|
|
"Online resizing not supported with bigalloc");
|
2012-01-05 06:09:52 +08:00
|
|
|
err = -EOPNOTSUPP;
|
|
|
|
goto group_extend_out;
|
2011-09-10 06:36:51 +08:00
|
|
|
}
|
|
|
|
|
2011-11-24 00:57:51 +08:00
|
|
|
err = mnt_want_write_file(filp);
|
2008-02-16 06:37:46 +08:00
|
|
|
if (err)
|
2012-01-05 06:09:52 +08:00
|
|
|
goto group_extend_out;
|
2008-02-16 06:37:46 +08:00
|
|
|
|
2006-10-11 16:20:53 +08:00
|
|
|
err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count);
|
2009-07-13 21:30:17 +08:00
|
|
|
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 08:29:21 +08:00
|
|
|
if (err == 0)
|
|
|
|
err = err2;
|
2011-12-09 21:06:57 +08:00
|
|
|
mnt_drop_write_file(filp);
|
2012-01-05 06:09:52 +08:00
|
|
|
group_extend_out:
|
2011-07-27 09:35:44 +08:00
|
|
|
ext4_resize_end(sb);
|
2006-10-11 16:20:50 +08:00
|
|
|
return err;
|
|
|
|
}
|
2009-06-18 07:24:03 +08:00
|
|
|
|
|
|
|
case EXT4_IOC_MOVE_EXT: {
|
|
|
|
struct move_extent me;
|
2012-08-29 00:52:22 +08:00
|
|
|
struct fd donor;
|
|
|
|
int err;
|
2009-06-18 07:24:03 +08:00
|
|
|
|
2009-12-07 12:38:31 +08:00
|
|
|
if (!(filp->f_mode & FMODE_READ) ||
|
|
|
|
!(filp->f_mode & FMODE_WRITE))
|
|
|
|
return -EBADF;
|
|
|
|
|
2009-06-18 07:24:03 +08:00
|
|
|
if (copy_from_user(&me,
|
|
|
|
(struct move_extent __user *)arg, sizeof(me)))
|
|
|
|
return -EFAULT;
|
2009-12-07 12:38:31 +08:00
|
|
|
me.moved_len = 0;
|
2009-06-18 07:24:03 +08:00
|
|
|
|
2012-08-29 00:52:22 +08:00
|
|
|
donor = fdget(me.donor_fd);
|
|
|
|
if (!donor.file)
|
2009-06-18 07:24:03 +08:00
|
|
|
return -EBADF;
|
|
|
|
|
2012-08-29 00:52:22 +08:00
|
|
|
if (!(donor.file->f_mode & FMODE_WRITE)) {
|
2009-12-07 12:38:31 +08:00
|
|
|
err = -EBADF;
|
|
|
|
goto mext_out;
|
2009-06-18 07:24:03 +08:00
|
|
|
}
|
|
|
|
|
2015-10-18 04:18:43 +08:00
|
|
|
if (ext4_has_feature_bigalloc(sb)) {
|
2011-09-10 06:36:51 +08:00
|
|
|
ext4_msg(sb, KERN_ERR,
|
|
|
|
"Online defrag not supported with bigalloc");
|
2012-08-27 09:00:03 +08:00
|
|
|
err = -EOPNOTSUPP;
|
|
|
|
goto mext_out;
|
2016-02-27 07:19:49 +08:00
|
|
|
} else if (IS_DAX(inode)) {
|
|
|
|
ext4_msg(sb, KERN_ERR,
|
|
|
|
"Online defrag not supported with DAX");
|
|
|
|
err = -EOPNOTSUPP;
|
|
|
|
goto mext_out;
|
2011-09-10 06:36:51 +08:00
|
|
|
}
|
|
|
|
|
2011-11-24 00:57:51 +08:00
|
|
|
err = mnt_want_write_file(filp);
|
2009-12-07 12:38:31 +08:00
|
|
|
if (err)
|
|
|
|
goto mext_out;
|
|
|
|
|
2012-08-29 00:52:22 +08:00
|
|
|
err = ext4_move_extents(filp, donor.file, me.orig_start,
|
2009-06-18 07:24:03 +08:00
|
|
|
me.donor_start, me.len, &me.moved_len);
|
2011-12-09 21:06:57 +08:00
|
|
|
mnt_drop_write_file(filp);
|
2009-06-18 07:24:03 +08:00
|
|
|
|
2010-05-17 19:00:00 +08:00
|
|
|
if (copy_to_user((struct move_extent __user *)arg,
|
2010-03-04 13:39:24 +08:00
|
|
|
&me, sizeof(me)))
|
2009-12-07 12:38:31 +08:00
|
|
|
err = -EFAULT;
|
|
|
|
mext_out:
|
2012-08-29 00:52:22 +08:00
|
|
|
fdput(donor);
|
2009-06-18 07:24:03 +08:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2006-10-11 16:20:53 +08:00
|
|
|
case EXT4_IOC_GROUP_ADD: {
|
|
|
|
struct ext4_new_group_data input;
|
2009-07-13 21:30:17 +08:00
|
|
|
int err, err2=0;
|
2006-10-11 16:20:50 +08:00
|
|
|
|
2011-07-27 09:35:44 +08:00
|
|
|
err = ext4_resize_begin(sb);
|
|
|
|
if (err)
|
|
|
|
return err;
|
2006-10-11 16:20:50 +08:00
|
|
|
|
2006-10-11 16:20:53 +08:00
|
|
|
if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg,
|
2012-01-05 06:09:52 +08:00
|
|
|
sizeof(input))) {
|
|
|
|
err = -EFAULT;
|
|
|
|
goto group_add_out;
|
|
|
|
}
|
2006-10-11 16:20:50 +08:00
|
|
|
|
2015-10-18 04:18:43 +08:00
|
|
|
if (ext4_has_feature_bigalloc(sb)) {
|
2011-09-10 06:36:51 +08:00
|
|
|
ext4_msg(sb, KERN_ERR,
|
|
|
|
"Online resizing not supported with bigalloc");
|
2012-01-05 06:09:52 +08:00
|
|
|
err = -EOPNOTSUPP;
|
|
|
|
goto group_add_out;
|
2011-09-10 06:36:51 +08:00
|
|
|
}
|
|
|
|
|
2011-11-24 00:57:51 +08:00
|
|
|
err = mnt_want_write_file(filp);
|
2008-02-16 06:37:46 +08:00
|
|
|
if (err)
|
2012-01-05 06:09:52 +08:00
|
|
|
goto group_add_out;
|
2008-02-16 06:37:46 +08:00
|
|
|
|
2006-10-11 16:20:53 +08:00
|
|
|
err = ext4_group_add(sb, &input);
|
2009-07-13 21:30:17 +08:00
|
|
|
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 08:29:21 +08:00
|
|
|
if (err == 0)
|
|
|
|
err = err2;
|
2011-12-09 21:06:57 +08:00
|
|
|
mnt_drop_write_file(filp);
|
2013-01-13 21:41:45 +08:00
|
|
|
if (!err && ext4_has_group_desc_csum(sb) &&
|
|
|
|
test_opt(sb, INIT_INODE_TABLE))
|
|
|
|
err = ext4_register_li_request(sb, input.group);
|
2012-01-05 06:09:52 +08:00
|
|
|
group_add_out:
|
2011-07-27 09:35:44 +08:00
|
|
|
ext4_resize_end(sb);
|
2006-10-11 16:20:50 +08:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2008-01-29 12:58:26 +08:00
|
|
|
case EXT4_IOC_MIGRATE:
|
2008-09-14 00:52:26 +08:00
|
|
|
{
|
|
|
|
int err;
|
2011-03-24 07:43:26 +08:00
|
|
|
if (!inode_owner_or_capable(inode))
|
2008-09-14 00:52:26 +08:00
|
|
|
return -EACCES;
|
|
|
|
|
2011-11-24 00:57:51 +08:00
|
|
|
err = mnt_want_write_file(filp);
|
2008-09-14 00:52:26 +08:00
|
|
|
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.
|
|
|
|
*/
|
2016-01-23 04:40:57 +08:00
|
|
|
inode_lock((inode));
|
2008-09-14 00:52:26 +08:00
|
|
|
err = ext4_ext_migrate(inode);
|
2016-01-23 04:40:57 +08:00
|
|
|
inode_unlock((inode));
|
2011-12-09 21:06:57 +08:00
|
|
|
mnt_drop_write_file(filp);
|
2008-09-14 00:52:26 +08:00
|
|
|
return err;
|
|
|
|
}
|
2008-01-29 12:58:26 +08:00
|
|
|
|
2009-02-26 14:04:07 +08:00
|
|
|
case EXT4_IOC_ALLOC_DA_BLKS:
|
|
|
|
{
|
|
|
|
int err;
|
2011-03-24 07:43:26 +08:00
|
|
|
if (!inode_owner_or_capable(inode))
|
2009-02-26 14:04:07 +08:00
|
|
|
return -EACCES;
|
|
|
|
|
2011-11-24 00:57:51 +08:00
|
|
|
err = mnt_want_write_file(filp);
|
2009-02-26 14:04:07 +08:00
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
err = ext4_alloc_da_blocks(inode);
|
2011-12-09 21:06:57 +08:00
|
|
|
mnt_drop_write_file(filp);
|
2009-02-26 14:04:07 +08:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2013-04-09 00:54:05 +08:00
|
|
|
case EXT4_IOC_SWAP_BOOT:
|
2014-10-04 00:47:23 +08:00
|
|
|
{
|
|
|
|
int err;
|
2013-04-09 00:54:05 +08:00
|
|
|
if (!(filp->f_mode & FMODE_WRITE))
|
|
|
|
return -EBADF;
|
2014-10-04 00:47:23 +08:00
|
|
|
err = mnt_want_write_file(filp);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
err = swap_inode_boot_loader(sb, inode);
|
|
|
|
mnt_drop_write_file(filp);
|
|
|
|
return err;
|
|
|
|
}
|
2013-04-09 00:54:05 +08:00
|
|
|
|
2012-01-05 06:09:44 +08:00
|
|
|
case EXT4_IOC_RESIZE_FS: {
|
|
|
|
ext4_fsblk_t n_blocks_count;
|
|
|
|
int err = 0, err2 = 0;
|
2013-01-13 21:41:45 +08:00
|
|
|
ext4_group_t o_group = EXT4_SB(sb)->s_groups_count;
|
2012-01-05 06:09:44 +08:00
|
|
|
|
2015-10-18 04:18:43 +08:00
|
|
|
if (ext4_has_feature_bigalloc(sb)) {
|
2012-01-05 06:09:44 +08:00
|
|
|
ext4_msg(sb, KERN_ERR,
|
|
|
|
"Online resizing not (yet) supported with bigalloc");
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (copy_from_user(&n_blocks_count, (__u64 __user *)arg,
|
|
|
|
sizeof(__u64))) {
|
|
|
|
return -EFAULT;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = ext4_resize_begin(sb);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
2012-07-19 15:19:07 +08:00
|
|
|
err = mnt_want_write_file(filp);
|
2012-01-05 06:09:44 +08:00
|
|
|
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 15:19:07 +08:00
|
|
|
mnt_drop_write_file(filp);
|
2013-01-13 21:41:45 +08:00
|
|
|
if (!err && (o_group > EXT4_SB(sb)->s_groups_count) &&
|
|
|
|
ext4_has_group_desc_csum(sb) &&
|
|
|
|
test_opt(sb, INIT_INODE_TABLE))
|
|
|
|
err = ext4_register_li_request(sb, o_group);
|
|
|
|
|
2012-01-05 06:09:44 +08:00
|
|
|
resizefs_out:
|
|
|
|
ext4_resize_end(sb);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2010-11-20 10:47:07 +08:00
|
|
|
case FITRIM:
|
|
|
|
{
|
2011-02-24 01:42:32 +08:00
|
|
|
struct request_queue *q = bdev_get_queue(sb->s_bdev);
|
2010-11-20 10:47:07 +08:00
|
|
|
struct fstrim_range range;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
|
|
return -EPERM;
|
|
|
|
|
2011-02-24 01:42:32 +08:00
|
|
|
if (!blk_queue_discard(q))
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
2011-10-18 22:59:51 +08:00
|
|
|
if (copy_from_user(&range, (struct fstrim_range __user *)arg,
|
2010-11-20 10:47:07 +08:00
|
|
|
sizeof(range)))
|
|
|
|
return -EFAULT;
|
|
|
|
|
2011-02-24 06:49:51 +08:00
|
|
|
range.minlen = max((unsigned int)range.minlen,
|
|
|
|
q->limits.discard_granularity);
|
2010-11-20 10:47:07 +08:00
|
|
|
ret = ext4_trim_fs(sb, &range);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
2011-10-18 22:59:51 +08:00
|
|
|
if (copy_to_user((struct fstrim_range __user *)arg, &range,
|
2010-11-20 10:47:07 +08:00
|
|
|
sizeof(range)))
|
|
|
|
return -EFAULT;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2013-08-17 10:05:14 +08:00
|
|
|
case EXT4_IOC_PRECACHE_EXTENTS:
|
|
|
|
return ext4_ext_precache(inode);
|
2015-04-11 19:48:01 +08:00
|
|
|
case EXT4_IOC_SET_ENCRYPTION_POLICY: {
|
|
|
|
#ifdef CONFIG_EXT4_FS_ENCRYPTION
|
2016-07-11 02:01:03 +08:00
|
|
|
struct fscrypt_policy policy;
|
2015-04-11 19:48:01 +08:00
|
|
|
|
|
|
|
if (copy_from_user(&policy,
|
2016-07-11 02:01:03 +08:00
|
|
|
(struct fscrypt_policy __user *)arg,
|
|
|
|
sizeof(policy)))
|
|
|
|
return -EFAULT;
|
2016-09-09 05:20:38 +08:00
|
|
|
return fscrypt_process_policy(filp, &policy);
|
2015-04-11 19:48:01 +08:00
|
|
|
#else
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
case EXT4_IOC_GET_ENCRYPTION_PWSALT: {
|
|
|
|
int err, err2;
|
|
|
|
struct ext4_sb_info *sbi = EXT4_SB(sb);
|
|
|
|
handle_t *handle;
|
|
|
|
|
|
|
|
if (!ext4_sb_has_crypto(sb))
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) {
|
|
|
|
err = mnt_want_write_file(filp);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1);
|
|
|
|
if (IS_ERR(handle)) {
|
|
|
|
err = PTR_ERR(handle);
|
|
|
|
goto pwsalt_err_exit;
|
|
|
|
}
|
|
|
|
err = ext4_journal_get_write_access(handle, sbi->s_sbh);
|
|
|
|
if (err)
|
|
|
|
goto pwsalt_err_journal;
|
|
|
|
generate_random_uuid(sbi->s_es->s_encrypt_pw_salt);
|
|
|
|
err = ext4_handle_dirty_metadata(handle, NULL,
|
|
|
|
sbi->s_sbh);
|
|
|
|
pwsalt_err_journal:
|
|
|
|
err2 = ext4_journal_stop(handle);
|
|
|
|
if (err2 && !err)
|
|
|
|
err = err2;
|
|
|
|
pwsalt_err_exit:
|
|
|
|
mnt_drop_write_file(filp);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
}
|
2015-06-09 00:23:21 +08:00
|
|
|
if (copy_to_user((void __user *) arg,
|
|
|
|
sbi->s_es->s_encrypt_pw_salt, 16))
|
2015-04-11 19:48:01 +08:00
|
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
case EXT4_IOC_GET_ENCRYPTION_POLICY: {
|
|
|
|
#ifdef CONFIG_EXT4_FS_ENCRYPTION
|
2016-07-11 02:01:03 +08:00
|
|
|
struct fscrypt_policy policy;
|
2015-04-11 19:48:01 +08:00
|
|
|
int err = 0;
|
|
|
|
|
|
|
|
if (!ext4_encrypted_inode(inode))
|
|
|
|
return -ENOENT;
|
2016-07-11 02:01:03 +08:00
|
|
|
err = fscrypt_get_policy(inode, &policy);
|
2015-04-11 19:48:01 +08:00
|
|
|
if (err)
|
|
|
|
return err;
|
2015-06-09 00:23:21 +08:00
|
|
|
if (copy_to_user((void __user *)arg, &policy, sizeof(policy)))
|
2015-04-11 19:48:01 +08:00
|
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
|
|
#else
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
#endif
|
|
|
|
}
|
2016-01-09 05:01:22 +08:00
|
|
|
case EXT4_IOC_FSGETXATTR:
|
|
|
|
{
|
|
|
|
struct fsxattr fa;
|
|
|
|
|
|
|
|
memset(&fa, 0, sizeof(struct fsxattr));
|
|
|
|
ext4_get_inode_flags(ei);
|
|
|
|
fa.fsx_xflags = ext4_iflags_to_xflags(ei->i_flags & EXT4_FL_USER_VISIBLE);
|
|
|
|
|
|
|
|
if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb,
|
|
|
|
EXT4_FEATURE_RO_COMPAT_PROJECT)) {
|
|
|
|
fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
|
|
|
|
EXT4_I(inode)->i_projid);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (copy_to_user((struct fsxattr __user *)arg,
|
|
|
|
&fa, sizeof(fa)))
|
|
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
case EXT4_IOC_FSSETXATTR:
|
|
|
|
{
|
|
|
|
struct fsxattr fa;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (copy_from_user(&fa, (struct fsxattr __user *)arg,
|
|
|
|
sizeof(fa)))
|
|
|
|
return -EFAULT;
|
|
|
|
|
|
|
|
/* Make sure caller has proper permission */
|
|
|
|
if (!inode_owner_or_capable(inode))
|
|
|
|
return -EACCES;
|
|
|
|
|
|
|
|
err = mnt_want_write_file(filp);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
|
|
|
flags = ext4_xflags_to_iflags(fa.fsx_xflags);
|
|
|
|
flags = ext4_mask_flags(inode->i_mode, flags);
|
|
|
|
|
2016-01-23 04:40:57 +08:00
|
|
|
inode_lock(inode);
|
2016-01-09 05:01:22 +08:00
|
|
|
flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) |
|
|
|
|
(flags & EXT4_FL_XFLAG_VISIBLE);
|
|
|
|
err = ext4_ioctl_setflags(inode, flags);
|
2016-01-23 04:40:57 +08:00
|
|
|
inode_unlock(inode);
|
2016-01-09 05:01:22 +08:00
|
|
|
mnt_drop_write_file(filp);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
|
|
|
err = ext4_ioctl_setproject(filp, fa.fsx_projid);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2006-10-11 16:20:50 +08:00
|
|
|
default:
|
|
|
|
return -ENOTTY;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_COMPAT
|
2006-10-11 16:20:53 +08:00
|
|
|
long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
2006-10-11 16:20:50 +08:00
|
|
|
{
|
|
|
|
/* These are just misnamed, they actually get/put from/to user an int */
|
|
|
|
switch (cmd) {
|
2006-10-11 16:20:53 +08:00
|
|
|
case EXT4_IOC32_GETFLAGS:
|
|
|
|
cmd = EXT4_IOC_GETFLAGS;
|
2006-10-11 16:20:50 +08:00
|
|
|
break;
|
2006-10-11 16:20:53 +08:00
|
|
|
case EXT4_IOC32_SETFLAGS:
|
|
|
|
cmd = EXT4_IOC_SETFLAGS;
|
2006-10-11 16:20:50 +08:00
|
|
|
break;
|
2006-10-11 16:20:53 +08:00
|
|
|
case EXT4_IOC32_GETVERSION:
|
|
|
|
cmd = EXT4_IOC_GETVERSION;
|
2006-10-11 16:20:50 +08:00
|
|
|
break;
|
2006-10-11 16:20:53 +08:00
|
|
|
case EXT4_IOC32_SETVERSION:
|
|
|
|
cmd = EXT4_IOC_SETVERSION;
|
2006-10-11 16:20:50 +08:00
|
|
|
break;
|
2006-10-11 16:20:53 +08:00
|
|
|
case EXT4_IOC32_GROUP_EXTEND:
|
|
|
|
cmd = EXT4_IOC_GROUP_EXTEND;
|
2006-10-11 16:20:50 +08:00
|
|
|
break;
|
2006-10-11 16:20:53 +08:00
|
|
|
case EXT4_IOC32_GETVERSION_OLD:
|
|
|
|
cmd = EXT4_IOC_GETVERSION_OLD;
|
2006-10-11 16:20:50 +08:00
|
|
|
break;
|
2006-10-11 16:20:53 +08:00
|
|
|
case EXT4_IOC32_SETVERSION_OLD:
|
|
|
|
cmd = EXT4_IOC_SETVERSION_OLD;
|
2006-10-11 16:20:50 +08:00
|
|
|
break;
|
2006-10-11 16:20:53 +08:00
|
|
|
case EXT4_IOC32_GETRSVSZ:
|
|
|
|
cmd = EXT4_IOC_GETRSVSZ;
|
2006-10-11 16:20:50 +08:00
|
|
|
break;
|
2006-10-11 16:20:53 +08:00
|
|
|
case EXT4_IOC32_SETRSVSZ:
|
|
|
|
cmd = EXT4_IOC_SETRSVSZ;
|
2006-10-11 16:20:50 +08:00
|
|
|
break;
|
2010-05-17 18:00:00 +08:00
|
|
|
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 12:00:00 +08:00
|
|
|
case EXT4_IOC_MOVE_EXT:
|
2012-01-05 06:09:44 +08:00
|
|
|
case EXT4_IOC_RESIZE_FS:
|
2013-08-17 10:05:14 +08:00
|
|
|
case EXT4_IOC_PRECACHE_EXTENTS:
|
2015-04-11 19:48:01 +08:00
|
|
|
case EXT4_IOC_SET_ENCRYPTION_POLICY:
|
|
|
|
case EXT4_IOC_GET_ENCRYPTION_PWSALT:
|
|
|
|
case EXT4_IOC_GET_ENCRYPTION_POLICY:
|
2010-05-15 12:00:00 +08:00
|
|
|
break;
|
2006-10-11 16:20:50 +08:00
|
|
|
default:
|
|
|
|
return -ENOIOCTLCMD;
|
|
|
|
}
|
2008-04-30 10:03:54 +08:00
|
|
|
return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
|
2006-10-11 16:20:50 +08:00
|
|
|
}
|
|
|
|
#endif
|