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1354 lines
34 KiB
1354 lines
34 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
/* |
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* linux/fs/ext4/ioctl.c |
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* |
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* Copyright (C) 1993, 1994, 1995 |
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* Remy Card ([email protected]) |
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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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#include <linux/capability.h> |
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#include <linux/time.h> |
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#include <linux/compat.h> |
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#include <linux/mount.h> |
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#include <linux/file.h> |
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#include <linux/quotaops.h> |
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#include <linux/random.h> |
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#include <linux/uuid.h> |
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#include <linux/uaccess.h> |
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#include <linux/delay.h> |
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#include <linux/iversion.h> |
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#include <linux/fileattr.h> |
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#include "ext4_jbd2.h" |
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#include "ext4.h" |
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#include <linux/fsmap.h> |
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#include "fsmap.h" |
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#include <trace/events/ext4.h> |
|
|
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/** |
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* Swap memory between @a and @b for @len bytes. |
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* |
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* @a: pointer to first memory area |
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* @b: pointer to second memory area |
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* @len: number of bytes to swap |
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* |
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*/ |
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static void memswap(void *a, void *b, size_t len) |
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{ |
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unsigned char *ap, *bp; |
|
|
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ap = (unsigned char *)a; |
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bp = (unsigned char *)b; |
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while (len-- > 0) { |
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swap(*ap, *bp); |
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ap++; |
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bp++; |
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} |
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} |
|
|
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/** |
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* Swap i_data and associated attributes between @inode1 and @inode2. |
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* This function is used for the primary swap between inode1 and inode2 |
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* and also to revert this primary swap in case of errors. |
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* |
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* Therefore you have to make sure, that calling this method twice |
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* will revert all changes. |
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* |
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* @inode1: pointer to first inode |
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* @inode2: pointer to second inode |
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*/ |
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static void swap_inode_data(struct inode *inode1, struct inode *inode2) |
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{ |
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loff_t isize; |
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struct ext4_inode_info *ei1; |
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struct ext4_inode_info *ei2; |
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unsigned long tmp; |
|
|
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ei1 = EXT4_I(inode1); |
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ei2 = EXT4_I(inode2); |
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|
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swap(inode1->i_version, inode2->i_version); |
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swap(inode1->i_atime, inode2->i_atime); |
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swap(inode1->i_mtime, inode2->i_mtime); |
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|
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memswap(ei1->i_data, ei2->i_data, sizeof(ei1->i_data)); |
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tmp = ei1->i_flags & EXT4_FL_SHOULD_SWAP; |
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ei1->i_flags = (ei2->i_flags & EXT4_FL_SHOULD_SWAP) | |
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(ei1->i_flags & ~EXT4_FL_SHOULD_SWAP); |
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ei2->i_flags = tmp | (ei2->i_flags & ~EXT4_FL_SHOULD_SWAP); |
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swap(ei1->i_disksize, ei2->i_disksize); |
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ext4_es_remove_extent(inode1, 0, EXT_MAX_BLOCKS); |
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ext4_es_remove_extent(inode2, 0, EXT_MAX_BLOCKS); |
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|
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isize = i_size_read(inode1); |
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i_size_write(inode1, i_size_read(inode2)); |
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i_size_write(inode2, isize); |
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} |
|
|
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void ext4_reset_inode_seed(struct inode *inode) |
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{ |
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struct ext4_inode_info *ei = EXT4_I(inode); |
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struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); |
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__le32 inum = cpu_to_le32(inode->i_ino); |
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__le32 gen = cpu_to_le32(inode->i_generation); |
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__u32 csum; |
|
|
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if (!ext4_has_metadata_csum(inode->i_sb)) |
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return; |
|
|
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csum = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)&inum, sizeof(inum)); |
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ei->i_csum_seed = ext4_chksum(sbi, csum, (__u8 *)&gen, sizeof(gen)); |
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} |
|
|
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/** |
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* Swap the information from the given @inode and the inode |
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* EXT4_BOOT_LOADER_INO. It will basically swap i_data and all other |
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* important fields of the inodes. |
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* |
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* @sb: the super block of the filesystem |
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* @mnt_userns: user namespace of the mount the inode was found from |
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* @inode: the inode to swap with EXT4_BOOT_LOADER_INO |
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* |
|
*/ |
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static long swap_inode_boot_loader(struct super_block *sb, |
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struct user_namespace *mnt_userns, |
|
struct inode *inode) |
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{ |
|
handle_t *handle; |
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int err; |
|
struct inode *inode_bl; |
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struct ext4_inode_info *ei_bl; |
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qsize_t size, size_bl, diff; |
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blkcnt_t blocks; |
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unsigned short bytes; |
|
|
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inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO, EXT4_IGET_SPECIAL); |
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if (IS_ERR(inode_bl)) |
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return PTR_ERR(inode_bl); |
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ei_bl = EXT4_I(inode_bl); |
|
|
|
/* Protect orig inodes against a truncate and make sure, |
|
* that only 1 swap_inode_boot_loader is running. */ |
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lock_two_nondirectories(inode, inode_bl); |
|
|
|
if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode) || |
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IS_SWAPFILE(inode) || IS_ENCRYPTED(inode) || |
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(EXT4_I(inode)->i_flags & EXT4_JOURNAL_DATA_FL) || |
|
ext4_has_inline_data(inode)) { |
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err = -EINVAL; |
|
goto journal_err_out; |
|
} |
|
|
|
if (IS_RDONLY(inode) || IS_APPEND(inode) || IS_IMMUTABLE(inode) || |
|
!inode_owner_or_capable(mnt_userns, inode) || |
|
!capable(CAP_SYS_ADMIN)) { |
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err = -EPERM; |
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goto journal_err_out; |
|
} |
|
|
|
down_write(&EXT4_I(inode)->i_mmap_sem); |
|
err = filemap_write_and_wait(inode->i_mapping); |
|
if (err) |
|
goto err_out; |
|
|
|
err = filemap_write_and_wait(inode_bl->i_mapping); |
|
if (err) |
|
goto err_out; |
|
|
|
/* Wait for all existing dio workers */ |
|
inode_dio_wait(inode); |
|
inode_dio_wait(inode_bl); |
|
|
|
truncate_inode_pages(&inode->i_data, 0); |
|
truncate_inode_pages(&inode_bl->i_data, 0); |
|
|
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handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2); |
|
if (IS_ERR(handle)) { |
|
err = -EINVAL; |
|
goto err_out; |
|
} |
|
ext4_fc_start_ineligible(sb, EXT4_FC_REASON_SWAP_BOOT); |
|
|
|
/* Protect extent tree against block allocations via delalloc */ |
|
ext4_double_down_write_data_sem(inode, inode_bl); |
|
|
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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); |
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inode_bl->i_flags = 0; |
|
ei_bl->i_flags = 0; |
|
inode_set_iversion(inode_bl, 1); |
|
i_size_write(inode_bl, 0); |
|
inode_bl->i_mode = S_IFREG; |
|
if (ext4_has_feature_extents(sb)) { |
|
ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS); |
|
ext4_ext_tree_init(handle, inode_bl); |
|
} else |
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memset(ei_bl->i_data, 0, sizeof(ei_bl->i_data)); |
|
} |
|
|
|
err = dquot_initialize(inode); |
|
if (err) |
|
goto err_out1; |
|
|
|
size = (qsize_t)(inode->i_blocks) * (1 << 9) + inode->i_bytes; |
|
size_bl = (qsize_t)(inode_bl->i_blocks) * (1 << 9) + inode_bl->i_bytes; |
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diff = size - size_bl; |
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swap_inode_data(inode, inode_bl); |
|
|
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inode->i_ctime = inode_bl->i_ctime = current_time(inode); |
|
|
|
inode->i_generation = prandom_u32(); |
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inode_bl->i_generation = prandom_u32(); |
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ext4_reset_inode_seed(inode); |
|
ext4_reset_inode_seed(inode_bl); |
|
|
|
ext4_discard_preallocations(inode, 0); |
|
|
|
err = ext4_mark_inode_dirty(handle, inode); |
|
if (err < 0) { |
|
/* No need to update quota information. */ |
|
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); |
|
ext4_mark_inode_dirty(handle, inode); |
|
goto err_out1; |
|
} |
|
|
|
blocks = inode_bl->i_blocks; |
|
bytes = inode_bl->i_bytes; |
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inode_bl->i_blocks = inode->i_blocks; |
|
inode_bl->i_bytes = inode->i_bytes; |
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err = ext4_mark_inode_dirty(handle, inode_bl); |
|
if (err < 0) { |
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/* No need to update quota information. */ |
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ext4_warning(inode_bl->i_sb, |
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"couldn't mark inode #%lu dirty (err %d)", |
|
inode_bl->i_ino, err); |
|
goto revert; |
|
} |
|
|
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/* Bootloader inode should not be counted into quota information. */ |
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if (diff > 0) |
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dquot_free_space(inode, diff); |
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else |
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err = dquot_alloc_space(inode, -1 * diff); |
|
|
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if (err < 0) { |
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revert: |
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/* Revert all changes: */ |
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inode_bl->i_blocks = blocks; |
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inode_bl->i_bytes = bytes; |
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swap_inode_data(inode, inode_bl); |
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ext4_mark_inode_dirty(handle, inode); |
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ext4_mark_inode_dirty(handle, inode_bl); |
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} |
|
|
|
err_out1: |
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ext4_journal_stop(handle); |
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ext4_fc_stop_ineligible(sb); |
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ext4_double_up_write_data_sem(inode, inode_bl); |
|
|
|
err_out: |
|
up_write(&EXT4_I(inode)->i_mmap_sem); |
|
journal_err_out: |
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unlock_two_nondirectories(inode, inode_bl); |
|
iput(inode_bl); |
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return err; |
|
} |
|
|
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#ifdef CONFIG_FS_ENCRYPTION |
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static int uuid_is_zero(__u8 u[16]) |
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{ |
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int i; |
|
|
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for (i = 0; i < 16; i++) |
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if (u[i]) |
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return 0; |
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return 1; |
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} |
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#endif |
|
|
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/* |
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* If immutable is set and we are not clearing it, we're not allowed to change |
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* anything else in the inode. Don't error out if we're only trying to set |
|
* immutable on an immutable file. |
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*/ |
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static int ext4_ioctl_check_immutable(struct inode *inode, __u32 new_projid, |
|
unsigned int flags) |
|
{ |
|
struct ext4_inode_info *ei = EXT4_I(inode); |
|
unsigned int oldflags = ei->i_flags; |
|
|
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if (!(oldflags & EXT4_IMMUTABLE_FL) || !(flags & EXT4_IMMUTABLE_FL)) |
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return 0; |
|
|
|
if ((oldflags & ~EXT4_IMMUTABLE_FL) != (flags & ~EXT4_IMMUTABLE_FL)) |
|
return -EPERM; |
|
if (ext4_has_feature_project(inode->i_sb) && |
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__kprojid_val(ei->i_projid) != new_projid) |
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return -EPERM; |
|
|
|
return 0; |
|
} |
|
|
|
static void ext4_dax_dontcache(struct inode *inode, unsigned int flags) |
|
{ |
|
struct ext4_inode_info *ei = EXT4_I(inode); |
|
|
|
if (S_ISDIR(inode->i_mode)) |
|
return; |
|
|
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if (test_opt2(inode->i_sb, DAX_NEVER) || |
|
test_opt(inode->i_sb, DAX_ALWAYS)) |
|
return; |
|
|
|
if ((ei->i_flags ^ flags) & EXT4_DAX_FL) |
|
d_mark_dontcache(inode); |
|
} |
|
|
|
static bool dax_compatible(struct inode *inode, unsigned int oldflags, |
|
unsigned int flags) |
|
{ |
|
/* Allow the DAX flag to be changed on inline directories */ |
|
if (S_ISDIR(inode->i_mode)) { |
|
flags &= ~EXT4_INLINE_DATA_FL; |
|
oldflags &= ~EXT4_INLINE_DATA_FL; |
|
} |
|
|
|
if (flags & EXT4_DAX_FL) { |
|
if ((oldflags & EXT4_DAX_MUT_EXCL) || |
|
ext4_test_inode_state(inode, |
|
EXT4_STATE_VERITY_IN_PROGRESS)) { |
|
return false; |
|
} |
|
} |
|
|
|
if ((flags & EXT4_DAX_MUT_EXCL) && (oldflags & EXT4_DAX_FL)) |
|
return false; |
|
|
|
return true; |
|
} |
|
|
|
static int ext4_ioctl_setflags(struct inode *inode, |
|
unsigned int flags) |
|
{ |
|
struct ext4_inode_info *ei = EXT4_I(inode); |
|
handle_t *handle = NULL; |
|
int err = -EPERM, migrate = 0; |
|
struct ext4_iloc iloc; |
|
unsigned int oldflags, mask, i; |
|
struct super_block *sb = inode->i_sb; |
|
|
|
/* Is it quota file? Do not allow user to mess with it */ |
|
if (ext4_is_quota_file(inode)) |
|
goto flags_out; |
|
|
|
oldflags = ei->i_flags; |
|
/* |
|
* The JOURNAL_DATA flag can only be changed by |
|
* the relevant capability. |
|
*/ |
|
if ((flags ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { |
|
if (!capable(CAP_SYS_RESOURCE)) |
|
goto flags_out; |
|
} |
|
|
|
if (!dax_compatible(inode, oldflags, flags)) { |
|
err = -EOPNOTSUPP; |
|
goto flags_out; |
|
} |
|
|
|
if ((flags ^ oldflags) & EXT4_EXTENTS_FL) |
|
migrate = 1; |
|
|
|
if ((flags ^ oldflags) & EXT4_CASEFOLD_FL) { |
|
if (!ext4_has_feature_casefold(sb)) { |
|
err = -EOPNOTSUPP; |
|
goto flags_out; |
|
} |
|
|
|
if (!S_ISDIR(inode->i_mode)) { |
|
err = -ENOTDIR; |
|
goto flags_out; |
|
} |
|
|
|
if (!ext4_empty_dir(inode)) { |
|
err = -ENOTEMPTY; |
|
goto flags_out; |
|
} |
|
} |
|
|
|
/* |
|
* Wait for all pending directio and then flush all the dirty pages |
|
* for this file. The flush marks all the pages readonly, so any |
|
* subsequent attempt to write to the file (particularly mmap pages) |
|
* will come through the filesystem and fail. |
|
*/ |
|
if (S_ISREG(inode->i_mode) && !IS_IMMUTABLE(inode) && |
|
(flags & EXT4_IMMUTABLE_FL)) { |
|
inode_dio_wait(inode); |
|
err = filemap_write_and_wait(inode->i_mapping); |
|
if (err) |
|
goto flags_out; |
|
} |
|
|
|
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; |
|
|
|
ext4_dax_dontcache(inode, flags); |
|
|
|
for (i = 0, mask = 1; i < 32; i++, mask <<= 1) { |
|
if (!(mask & EXT4_FL_USER_MODIFIABLE)) |
|
continue; |
|
/* These flags get special treatment later */ |
|
if (mask == EXT4_JOURNAL_DATA_FL || mask == EXT4_EXTENTS_FL) |
|
continue; |
|
if (mask & flags) |
|
ext4_set_inode_flag(inode, i); |
|
else |
|
ext4_clear_inode_flag(inode, i); |
|
} |
|
|
|
ext4_set_inode_flags(inode, false); |
|
|
|
inode->i_ctime = current_time(inode); |
|
|
|
err = ext4_mark_iloc_dirty(handle, inode, &iloc); |
|
flags_err: |
|
ext4_journal_stop(handle); |
|
if (err) |
|
goto flags_out; |
|
|
|
if ((flags ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { |
|
/* |
|
* Changes to the journaling mode can cause unsafe changes to |
|
* S_DAX if the inode is DAX |
|
*/ |
|
if (IS_DAX(inode)) { |
|
err = -EBUSY; |
|
goto flags_out; |
|
} |
|
|
|
err = ext4_change_inode_journal_flag(inode, |
|
flags & EXT4_JOURNAL_DATA_FL); |
|
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 inode *inode, __u32 projid) |
|
{ |
|
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; |
|
struct dquot *transfer_to[MAXQUOTAS] = { }; |
|
|
|
if (!ext4_has_feature_project(sb)) { |
|
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 = -EPERM; |
|
/* Is it quota file? Do not allow user to mess with it */ |
|
if (ext4_is_quota_file(inode)) |
|
return err; |
|
|
|
err = ext4_get_inode_loc(inode, &iloc); |
|
if (err) |
|
return err; |
|
|
|
raw_inode = ext4_raw_inode(&iloc); |
|
if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) { |
|
err = ext4_expand_extra_isize(inode, |
|
EXT4_SB(sb)->s_want_extra_isize, |
|
&iloc); |
|
if (err) |
|
return err; |
|
} else { |
|
brelse(iloc.bh); |
|
} |
|
|
|
err = dquot_initialize(inode); |
|
if (err) |
|
return err; |
|
|
|
handle = ext4_journal_start(inode, EXT4_HT_QUOTA, |
|
EXT4_QUOTA_INIT_BLOCKS(sb) + |
|
EXT4_QUOTA_DEL_BLOCKS(sb) + 3); |
|
if (IS_ERR(handle)) |
|
return PTR_ERR(handle); |
|
|
|
err = ext4_reserve_inode_write(handle, inode, &iloc); |
|
if (err) |
|
goto out_stop; |
|
|
|
transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); |
|
if (!IS_ERR(transfer_to[PRJQUOTA])) { |
|
|
|
/* __dquot_transfer() calls back ext4_get_inode_usage() which |
|
* counts xattr inode references. |
|
*/ |
|
down_read(&EXT4_I(inode)->xattr_sem); |
|
err = __dquot_transfer(inode, transfer_to); |
|
up_read(&EXT4_I(inode)->xattr_sem); |
|
dqput(transfer_to[PRJQUOTA]); |
|
if (err) |
|
goto out_dirty; |
|
} |
|
|
|
EXT4_I(inode)->i_projid = kprojid; |
|
inode->i_ctime = current_time(inode); |
|
out_dirty: |
|
rc = ext4_mark_iloc_dirty(handle, inode, &iloc); |
|
if (!err) |
|
err = rc; |
|
out_stop: |
|
ext4_journal_stop(handle); |
|
return err; |
|
} |
|
#else |
|
static int ext4_ioctl_setproject(struct inode *inode, __u32 projid) |
|
{ |
|
if (projid != EXT4_DEF_PROJID) |
|
return -EOPNOTSUPP; |
|
return 0; |
|
} |
|
#endif |
|
|
|
static int ext4_shutdown(struct super_block *sb, unsigned long arg) |
|
{ |
|
struct ext4_sb_info *sbi = EXT4_SB(sb); |
|
__u32 flags; |
|
|
|
if (!capable(CAP_SYS_ADMIN)) |
|
return -EPERM; |
|
|
|
if (get_user(flags, (__u32 __user *)arg)) |
|
return -EFAULT; |
|
|
|
if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH) |
|
return -EINVAL; |
|
|
|
if (ext4_forced_shutdown(sbi)) |
|
return 0; |
|
|
|
ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags); |
|
trace_ext4_shutdown(sb, flags); |
|
|
|
switch (flags) { |
|
case EXT4_GOING_FLAGS_DEFAULT: |
|
freeze_bdev(sb->s_bdev); |
|
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); |
|
thaw_bdev(sb->s_bdev); |
|
break; |
|
case EXT4_GOING_FLAGS_LOGFLUSH: |
|
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); |
|
if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { |
|
(void) ext4_force_commit(sb); |
|
jbd2_journal_abort(sbi->s_journal, -ESHUTDOWN); |
|
} |
|
break; |
|
case EXT4_GOING_FLAGS_NOLOGFLUSH: |
|
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); |
|
if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) |
|
jbd2_journal_abort(sbi->s_journal, -ESHUTDOWN); |
|
break; |
|
default: |
|
return -EINVAL; |
|
} |
|
clear_opt(sb, DISCARD); |
|
return 0; |
|
} |
|
|
|
struct getfsmap_info { |
|
struct super_block *gi_sb; |
|
struct fsmap_head __user *gi_data; |
|
unsigned int gi_idx; |
|
__u32 gi_last_flags; |
|
}; |
|
|
|
static int ext4_getfsmap_format(struct ext4_fsmap *xfm, void *priv) |
|
{ |
|
struct getfsmap_info *info = priv; |
|
struct fsmap fm; |
|
|
|
trace_ext4_getfsmap_mapping(info->gi_sb, xfm); |
|
|
|
info->gi_last_flags = xfm->fmr_flags; |
|
ext4_fsmap_from_internal(info->gi_sb, &fm, xfm); |
|
if (copy_to_user(&info->gi_data->fmh_recs[info->gi_idx++], &fm, |
|
sizeof(struct fsmap))) |
|
return -EFAULT; |
|
|
|
return 0; |
|
} |
|
|
|
static int ext4_ioc_getfsmap(struct super_block *sb, |
|
struct fsmap_head __user *arg) |
|
{ |
|
struct getfsmap_info info = { NULL }; |
|
struct ext4_fsmap_head xhead = {0}; |
|
struct fsmap_head head; |
|
bool aborted = false; |
|
int error; |
|
|
|
if (copy_from_user(&head, arg, sizeof(struct fsmap_head))) |
|
return -EFAULT; |
|
if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) || |
|
memchr_inv(head.fmh_keys[0].fmr_reserved, 0, |
|
sizeof(head.fmh_keys[0].fmr_reserved)) || |
|
memchr_inv(head.fmh_keys[1].fmr_reserved, 0, |
|
sizeof(head.fmh_keys[1].fmr_reserved))) |
|
return -EINVAL; |
|
/* |
|
* ext4 doesn't report file extents at all, so the only valid |
|
* file offsets are the magic ones (all zeroes or all ones). |
|
*/ |
|
if (head.fmh_keys[0].fmr_offset || |
|
(head.fmh_keys[1].fmr_offset != 0 && |
|
head.fmh_keys[1].fmr_offset != -1ULL)) |
|
return -EINVAL; |
|
|
|
xhead.fmh_iflags = head.fmh_iflags; |
|
xhead.fmh_count = head.fmh_count; |
|
ext4_fsmap_to_internal(sb, &xhead.fmh_keys[0], &head.fmh_keys[0]); |
|
ext4_fsmap_to_internal(sb, &xhead.fmh_keys[1], &head.fmh_keys[1]); |
|
|
|
trace_ext4_getfsmap_low_key(sb, &xhead.fmh_keys[0]); |
|
trace_ext4_getfsmap_high_key(sb, &xhead.fmh_keys[1]); |
|
|
|
info.gi_sb = sb; |
|
info.gi_data = arg; |
|
error = ext4_getfsmap(sb, &xhead, ext4_getfsmap_format, &info); |
|
if (error == EXT4_QUERY_RANGE_ABORT) |
|
aborted = true; |
|
else if (error) |
|
return error; |
|
|
|
/* If we didn't abort, set the "last" flag in the last fmx */ |
|
if (!aborted && info.gi_idx) { |
|
info.gi_last_flags |= FMR_OF_LAST; |
|
if (copy_to_user(&info.gi_data->fmh_recs[info.gi_idx - 1].fmr_flags, |
|
&info.gi_last_flags, |
|
sizeof(info.gi_last_flags))) |
|
return -EFAULT; |
|
} |
|
|
|
/* copy back header */ |
|
head.fmh_entries = xhead.fmh_entries; |
|
head.fmh_oflags = xhead.fmh_oflags; |
|
if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) |
|
return -EFAULT; |
|
|
|
return 0; |
|
} |
|
|
|
static long ext4_ioctl_group_add(struct file *file, |
|
struct ext4_new_group_data *input) |
|
{ |
|
struct super_block *sb = file_inode(file)->i_sb; |
|
int err, err2=0; |
|
|
|
err = ext4_resize_begin(sb); |
|
if (err) |
|
return err; |
|
|
|
if (ext4_has_feature_bigalloc(sb)) { |
|
ext4_msg(sb, KERN_ERR, |
|
"Online resizing not supported with bigalloc"); |
|
err = -EOPNOTSUPP; |
|
goto group_add_out; |
|
} |
|
|
|
err = mnt_want_write_file(file); |
|
if (err) |
|
goto group_add_out; |
|
|
|
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, 0); |
|
jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); |
|
} |
|
if (err == 0) |
|
err = err2; |
|
mnt_drop_write_file(file); |
|
if (!err && ext4_has_group_desc_csum(sb) && |
|
test_opt(sb, INIT_INODE_TABLE)) |
|
err = ext4_register_li_request(sb, input->group); |
|
group_add_out: |
|
ext4_resize_end(sb); |
|
return err; |
|
} |
|
|
|
int ext4_fileattr_get(struct dentry *dentry, struct fileattr *fa) |
|
{ |
|
struct inode *inode = d_inode(dentry); |
|
struct ext4_inode_info *ei = EXT4_I(inode); |
|
u32 flags = ei->i_flags & EXT4_FL_USER_VISIBLE; |
|
|
|
if (S_ISREG(inode->i_mode)) |
|
flags &= ~FS_PROJINHERIT_FL; |
|
|
|
fileattr_fill_flags(fa, flags); |
|
if (ext4_has_feature_project(inode->i_sb)) |
|
fa->fsx_projid = from_kprojid(&init_user_ns, ei->i_projid); |
|
|
|
return 0; |
|
} |
|
|
|
int ext4_fileattr_set(struct user_namespace *mnt_userns, |
|
struct dentry *dentry, struct fileattr *fa) |
|
{ |
|
struct inode *inode = d_inode(dentry); |
|
u32 flags = fa->flags; |
|
int err = -EOPNOTSUPP; |
|
|
|
ext4_fc_start_update(inode); |
|
if (flags & ~EXT4_FL_USER_VISIBLE) |
|
goto out; |
|
|
|
/* |
|
* chattr(1) grabs flags via GETFLAGS, modifies the result and |
|
* passes that to SETFLAGS. So we cannot easily make SETFLAGS |
|
* more restrictive than just silently masking off visible but |
|
* not settable flags as we always did. |
|
*/ |
|
flags &= EXT4_FL_USER_MODIFIABLE; |
|
if (ext4_mask_flags(inode->i_mode, flags) != flags) |
|
goto out; |
|
err = ext4_ioctl_check_immutable(inode, fa->fsx_projid, flags); |
|
if (err) |
|
goto out; |
|
err = ext4_ioctl_setflags(inode, flags); |
|
if (err) |
|
goto out; |
|
err = ext4_ioctl_setproject(inode, fa->fsx_projid); |
|
out: |
|
ext4_fc_stop_update(inode); |
|
return err; |
|
} |
|
|
|
/* So that the fiemap access checks can't overflow on 32 bit machines. */ |
|
#define FIEMAP_MAX_EXTENTS (UINT_MAX / sizeof(struct fiemap_extent)) |
|
|
|
static int ext4_ioctl_get_es_cache(struct file *filp, unsigned long arg) |
|
{ |
|
struct fiemap fiemap; |
|
struct fiemap __user *ufiemap = (struct fiemap __user *) arg; |
|
struct fiemap_extent_info fieinfo = { 0, }; |
|
struct inode *inode = file_inode(filp); |
|
int error; |
|
|
|
if (copy_from_user(&fiemap, ufiemap, sizeof(fiemap))) |
|
return -EFAULT; |
|
|
|
if (fiemap.fm_extent_count > FIEMAP_MAX_EXTENTS) |
|
return -EINVAL; |
|
|
|
fieinfo.fi_flags = fiemap.fm_flags; |
|
fieinfo.fi_extents_max = fiemap.fm_extent_count; |
|
fieinfo.fi_extents_start = ufiemap->fm_extents; |
|
|
|
error = ext4_get_es_cache(inode, &fieinfo, fiemap.fm_start, |
|
fiemap.fm_length); |
|
fiemap.fm_flags = fieinfo.fi_flags; |
|
fiemap.fm_mapped_extents = fieinfo.fi_extents_mapped; |
|
if (copy_to_user(ufiemap, &fiemap, sizeof(fiemap))) |
|
error = -EFAULT; |
|
|
|
return error; |
|
} |
|
|
|
static int ext4_ioctl_checkpoint(struct file *filp, unsigned long arg) |
|
{ |
|
int err = 0; |
|
__u32 flags = 0; |
|
unsigned int flush_flags = 0; |
|
struct super_block *sb = file_inode(filp)->i_sb; |
|
struct request_queue *q; |
|
|
|
if (copy_from_user(&flags, (__u32 __user *)arg, |
|
sizeof(__u32))) |
|
return -EFAULT; |
|
|
|
if (!capable(CAP_SYS_ADMIN)) |
|
return -EPERM; |
|
|
|
/* check for invalid bits set */ |
|
if ((flags & ~EXT4_IOC_CHECKPOINT_FLAG_VALID) || |
|
((flags & JBD2_JOURNAL_FLUSH_DISCARD) && |
|
(flags & JBD2_JOURNAL_FLUSH_ZEROOUT))) |
|
return -EINVAL; |
|
|
|
if (!EXT4_SB(sb)->s_journal) |
|
return -ENODEV; |
|
|
|
if (flags & ~EXT4_IOC_CHECKPOINT_FLAG_VALID) |
|
return -EINVAL; |
|
|
|
q = bdev_get_queue(EXT4_SB(sb)->s_journal->j_dev); |
|
if (!q) |
|
return -ENXIO; |
|
if ((flags & JBD2_JOURNAL_FLUSH_DISCARD) && !blk_queue_discard(q)) |
|
return -EOPNOTSUPP; |
|
|
|
if (flags & EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN) |
|
return 0; |
|
|
|
if (flags & EXT4_IOC_CHECKPOINT_FLAG_DISCARD) |
|
flush_flags |= JBD2_JOURNAL_FLUSH_DISCARD; |
|
|
|
if (flags & EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT) { |
|
flush_flags |= JBD2_JOURNAL_FLUSH_ZEROOUT; |
|
pr_info_ratelimited("warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow"); |
|
} |
|
|
|
jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); |
|
err = jbd2_journal_flush(EXT4_SB(sb)->s_journal, flush_flags); |
|
jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); |
|
|
|
return err; |
|
} |
|
|
|
static long __ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
|
{ |
|
struct inode *inode = file_inode(filp); |
|
struct super_block *sb = inode->i_sb; |
|
struct user_namespace *mnt_userns = file_mnt_user_ns(filp); |
|
|
|
ext4_debug("cmd = %u, arg = %lu\n", cmd, arg); |
|
|
|
switch (cmd) { |
|
case FS_IOC_GETFSMAP: |
|
return ext4_ioc_getfsmap(sb, (void __user *)arg); |
|
case EXT4_IOC_GETVERSION: |
|
case EXT4_IOC_GETVERSION_OLD: |
|
return put_user(inode->i_generation, (int __user *) arg); |
|
case EXT4_IOC_SETVERSION: |
|
case EXT4_IOC_SETVERSION_OLD: { |
|
handle_t *handle; |
|
struct ext4_iloc iloc; |
|
__u32 generation; |
|
int err; |
|
|
|
if (!inode_owner_or_capable(mnt_userns, inode)) |
|
return -EPERM; |
|
|
|
if (ext4_has_metadata_csum(inode->i_sb)) { |
|
ext4_warning(sb, "Setting inode version is not " |
|
"supported with metadata_csum enabled."); |
|
return -ENOTTY; |
|
} |
|
|
|
err = mnt_want_write_file(filp); |
|
if (err) |
|
return err; |
|
if (get_user(generation, (int __user *) arg)) { |
|
err = -EFAULT; |
|
goto setversion_out; |
|
} |
|
|
|
inode_lock(inode); |
|
handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); |
|
if (IS_ERR(handle)) { |
|
err = PTR_ERR(handle); |
|
goto unlock_out; |
|
} |
|
err = ext4_reserve_inode_write(handle, inode, &iloc); |
|
if (err == 0) { |
|
inode->i_ctime = current_time(inode); |
|
inode->i_generation = generation; |
|
err = ext4_mark_iloc_dirty(handle, inode, &iloc); |
|
} |
|
ext4_journal_stop(handle); |
|
|
|
unlock_out: |
|
inode_unlock(inode); |
|
setversion_out: |
|
mnt_drop_write_file(filp); |
|
return err; |
|
} |
|
case EXT4_IOC_GROUP_EXTEND: { |
|
ext4_fsblk_t n_blocks_count; |
|
int err, err2=0; |
|
|
|
err = ext4_resize_begin(sb); |
|
if (err) |
|
return err; |
|
|
|
if (get_user(n_blocks_count, (__u32 __user *)arg)) { |
|
err = -EFAULT; |
|
goto group_extend_out; |
|
} |
|
|
|
if (ext4_has_feature_bigalloc(sb)) { |
|
ext4_msg(sb, KERN_ERR, |
|
"Online resizing not supported with bigalloc"); |
|
err = -EOPNOTSUPP; |
|
goto group_extend_out; |
|
} |
|
|
|
err = mnt_want_write_file(filp); |
|
if (err) |
|
goto group_extend_out; |
|
|
|
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, 0); |
|
jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); |
|
} |
|
if (err == 0) |
|
err = err2; |
|
mnt_drop_write_file(filp); |
|
group_extend_out: |
|
ext4_resize_end(sb); |
|
return err; |
|
} |
|
|
|
case EXT4_IOC_MOVE_EXT: { |
|
struct move_extent me; |
|
struct fd donor; |
|
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 = fdget(me.donor_fd); |
|
if (!donor.file) |
|
return -EBADF; |
|
|
|
if (!(donor.file->f_mode & FMODE_WRITE)) { |
|
err = -EBADF; |
|
goto mext_out; |
|
} |
|
|
|
if (ext4_has_feature_bigalloc(sb)) { |
|
ext4_msg(sb, KERN_ERR, |
|
"Online defrag not supported with bigalloc"); |
|
err = -EOPNOTSUPP; |
|
goto mext_out; |
|
} else if (IS_DAX(inode)) { |
|
ext4_msg(sb, KERN_ERR, |
|
"Online defrag not supported with DAX"); |
|
err = -EOPNOTSUPP; |
|
goto mext_out; |
|
} |
|
|
|
err = mnt_want_write_file(filp); |
|
if (err) |
|
goto mext_out; |
|
|
|
err = ext4_move_extents(filp, donor.file, me.orig_start, |
|
me.donor_start, me.len, &me.moved_len); |
|
mnt_drop_write_file(filp); |
|
|
|
if (copy_to_user((struct move_extent __user *)arg, |
|
&me, sizeof(me))) |
|
err = -EFAULT; |
|
mext_out: |
|
fdput(donor); |
|
return err; |
|
} |
|
|
|
case EXT4_IOC_GROUP_ADD: { |
|
struct ext4_new_group_data input; |
|
|
|
if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg, |
|
sizeof(input))) |
|
return -EFAULT; |
|
|
|
return ext4_ioctl_group_add(filp, &input); |
|
} |
|
|
|
case EXT4_IOC_MIGRATE: |
|
{ |
|
int err; |
|
if (!inode_owner_or_capable(mnt_userns, inode)) |
|
return -EACCES; |
|
|
|
err = mnt_want_write_file(filp); |
|
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. |
|
*/ |
|
inode_lock((inode)); |
|
err = ext4_ext_migrate(inode); |
|
inode_unlock((inode)); |
|
mnt_drop_write_file(filp); |
|
return err; |
|
} |
|
|
|
case EXT4_IOC_ALLOC_DA_BLKS: |
|
{ |
|
int err; |
|
if (!inode_owner_or_capable(mnt_userns, inode)) |
|
return -EACCES; |
|
|
|
err = mnt_want_write_file(filp); |
|
if (err) |
|
return err; |
|
err = ext4_alloc_da_blocks(inode); |
|
mnt_drop_write_file(filp); |
|
return err; |
|
} |
|
|
|
case EXT4_IOC_SWAP_BOOT: |
|
{ |
|
int err; |
|
if (!(filp->f_mode & FMODE_WRITE)) |
|
return -EBADF; |
|
err = mnt_want_write_file(filp); |
|
if (err) |
|
return err; |
|
err = swap_inode_boot_loader(sb, mnt_userns, inode); |
|
mnt_drop_write_file(filp); |
|
return err; |
|
} |
|
|
|
case EXT4_IOC_RESIZE_FS: { |
|
ext4_fsblk_t n_blocks_count; |
|
int err = 0, err2 = 0; |
|
ext4_group_t o_group = EXT4_SB(sb)->s_groups_count; |
|
|
|
if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, |
|
sizeof(__u64))) { |
|
return -EFAULT; |
|
} |
|
|
|
err = ext4_resize_begin(sb); |
|
if (err) |
|
return err; |
|
|
|
err = mnt_want_write_file(filp); |
|
if (err) |
|
goto resizefs_out; |
|
|
|
err = ext4_resize_fs(sb, n_blocks_count); |
|
if (EXT4_SB(sb)->s_journal) { |
|
ext4_fc_mark_ineligible(sb, EXT4_FC_REASON_RESIZE); |
|
jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); |
|
err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal, 0); |
|
jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); |
|
} |
|
if (err == 0) |
|
err = err2; |
|
mnt_drop_write_file(filp); |
|
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); |
|
|
|
resizefs_out: |
|
ext4_resize_end(sb); |
|
return err; |
|
} |
|
|
|
case FITRIM: |
|
{ |
|
struct request_queue *q = bdev_get_queue(sb->s_bdev); |
|
struct fstrim_range range; |
|
int ret = 0; |
|
|
|
if (!capable(CAP_SYS_ADMIN)) |
|
return -EPERM; |
|
|
|
if (!blk_queue_discard(q)) |
|
return -EOPNOTSUPP; |
|
|
|
/* |
|
* We haven't replayed the journal, so we cannot use our |
|
* block-bitmap-guided storage zapping commands. |
|
*/ |
|
if (test_opt(sb, NOLOAD) && ext4_has_feature_journal(sb)) |
|
return -EROFS; |
|
|
|
if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
|
sizeof(range))) |
|
return -EFAULT; |
|
|
|
range.minlen = max((unsigned int)range.minlen, |
|
q->limits.discard_granularity); |
|
ret = ext4_trim_fs(sb, &range); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (copy_to_user((struct fstrim_range __user *)arg, &range, |
|
sizeof(range))) |
|
return -EFAULT; |
|
|
|
return 0; |
|
} |
|
case EXT4_IOC_PRECACHE_EXTENTS: |
|
return ext4_ext_precache(inode); |
|
|
|
case FS_IOC_SET_ENCRYPTION_POLICY: |
|
if (!ext4_has_feature_encrypt(sb)) |
|
return -EOPNOTSUPP; |
|
return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
|
|
|
case FS_IOC_GET_ENCRYPTION_PWSALT: { |
|
#ifdef CONFIG_FS_ENCRYPTION |
|
int err, err2; |
|
struct ext4_sb_info *sbi = EXT4_SB(sb); |
|
handle_t *handle; |
|
|
|
if (!ext4_has_feature_encrypt(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; |
|
lock_buffer(sbi->s_sbh); |
|
generate_random_uuid(sbi->s_es->s_encrypt_pw_salt); |
|
ext4_superblock_csum_set(sb); |
|
unlock_buffer(sbi->s_sbh); |
|
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; |
|
} |
|
if (copy_to_user((void __user *) arg, |
|
sbi->s_es->s_encrypt_pw_salt, 16)) |
|
return -EFAULT; |
|
return 0; |
|
#else |
|
return -EOPNOTSUPP; |
|
#endif |
|
} |
|
case FS_IOC_GET_ENCRYPTION_POLICY: |
|
if (!ext4_has_feature_encrypt(sb)) |
|
return -EOPNOTSUPP; |
|
return fscrypt_ioctl_get_policy(filp, (void __user *)arg); |
|
|
|
case FS_IOC_GET_ENCRYPTION_POLICY_EX: |
|
if (!ext4_has_feature_encrypt(sb)) |
|
return -EOPNOTSUPP; |
|
return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg); |
|
|
|
case FS_IOC_ADD_ENCRYPTION_KEY: |
|
if (!ext4_has_feature_encrypt(sb)) |
|
return -EOPNOTSUPP; |
|
return fscrypt_ioctl_add_key(filp, (void __user *)arg); |
|
|
|
case FS_IOC_REMOVE_ENCRYPTION_KEY: |
|
if (!ext4_has_feature_encrypt(sb)) |
|
return -EOPNOTSUPP; |
|
return fscrypt_ioctl_remove_key(filp, (void __user *)arg); |
|
|
|
case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: |
|
if (!ext4_has_feature_encrypt(sb)) |
|
return -EOPNOTSUPP; |
|
return fscrypt_ioctl_remove_key_all_users(filp, |
|
(void __user *)arg); |
|
case FS_IOC_GET_ENCRYPTION_KEY_STATUS: |
|
if (!ext4_has_feature_encrypt(sb)) |
|
return -EOPNOTSUPP; |
|
return fscrypt_ioctl_get_key_status(filp, (void __user *)arg); |
|
|
|
case FS_IOC_GET_ENCRYPTION_NONCE: |
|
if (!ext4_has_feature_encrypt(sb)) |
|
return -EOPNOTSUPP; |
|
return fscrypt_ioctl_get_nonce(filp, (void __user *)arg); |
|
|
|
case EXT4_IOC_CLEAR_ES_CACHE: |
|
{ |
|
if (!inode_owner_or_capable(mnt_userns, inode)) |
|
return -EACCES; |
|
ext4_clear_inode_es(inode); |
|
return 0; |
|
} |
|
|
|
case EXT4_IOC_GETSTATE: |
|
{ |
|
__u32 state = 0; |
|
|
|
if (ext4_test_inode_state(inode, EXT4_STATE_EXT_PRECACHED)) |
|
state |= EXT4_STATE_FLAG_EXT_PRECACHED; |
|
if (ext4_test_inode_state(inode, EXT4_STATE_NEW)) |
|
state |= EXT4_STATE_FLAG_NEW; |
|
if (ext4_test_inode_state(inode, EXT4_STATE_NEWENTRY)) |
|
state |= EXT4_STATE_FLAG_NEWENTRY; |
|
if (ext4_test_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE)) |
|
state |= EXT4_STATE_FLAG_DA_ALLOC_CLOSE; |
|
|
|
return put_user(state, (__u32 __user *) arg); |
|
} |
|
|
|
case EXT4_IOC_GET_ES_CACHE: |
|
return ext4_ioctl_get_es_cache(filp, arg); |
|
|
|
case EXT4_IOC_SHUTDOWN: |
|
return ext4_shutdown(sb, arg); |
|
|
|
case FS_IOC_ENABLE_VERITY: |
|
if (!ext4_has_feature_verity(sb)) |
|
return -EOPNOTSUPP; |
|
return fsverity_ioctl_enable(filp, (const void __user *)arg); |
|
|
|
case FS_IOC_MEASURE_VERITY: |
|
if (!ext4_has_feature_verity(sb)) |
|
return -EOPNOTSUPP; |
|
return fsverity_ioctl_measure(filp, (void __user *)arg); |
|
|
|
case FS_IOC_READ_VERITY_METADATA: |
|
if (!ext4_has_feature_verity(sb)) |
|
return -EOPNOTSUPP; |
|
return fsverity_ioctl_read_metadata(filp, |
|
(const void __user *)arg); |
|
|
|
case EXT4_IOC_CHECKPOINT: |
|
return ext4_ioctl_checkpoint(filp, arg); |
|
|
|
default: |
|
return -ENOTTY; |
|
} |
|
} |
|
|
|
long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
|
{ |
|
long ret; |
|
|
|
ext4_fc_start_update(file_inode(filp)); |
|
ret = __ext4_ioctl(filp, cmd, arg); |
|
ext4_fc_stop_update(file_inode(filp)); |
|
|
|
return ret; |
|
} |
|
|
|
#ifdef CONFIG_COMPAT |
|
long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
|
{ |
|
/* These are just misnamed, they actually get/put from/to user an int */ |
|
switch (cmd) { |
|
case EXT4_IOC32_GETVERSION: |
|
cmd = EXT4_IOC_GETVERSION; |
|
break; |
|
case EXT4_IOC32_SETVERSION: |
|
cmd = EXT4_IOC_SETVERSION; |
|
break; |
|
case EXT4_IOC32_GROUP_EXTEND: |
|
cmd = EXT4_IOC_GROUP_EXTEND; |
|
break; |
|
case EXT4_IOC32_GETVERSION_OLD: |
|
cmd = EXT4_IOC_GETVERSION_OLD; |
|
break; |
|
case EXT4_IOC32_SETVERSION_OLD: |
|
cmd = EXT4_IOC_SETVERSION_OLD; |
|
break; |
|
case EXT4_IOC32_GETRSVSZ: |
|
cmd = EXT4_IOC_GETRSVSZ; |
|
break; |
|
case EXT4_IOC32_SETRSVSZ: |
|
cmd = EXT4_IOC_SETRSVSZ; |
|
break; |
|
case EXT4_IOC32_GROUP_ADD: { |
|
struct compat_ext4_new_group_input __user *uinput; |
|
struct ext4_new_group_data input; |
|
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; |
|
return ext4_ioctl_group_add(file, &input); |
|
} |
|
case EXT4_IOC_MOVE_EXT: |
|
case EXT4_IOC_RESIZE_FS: |
|
case FITRIM: |
|
case EXT4_IOC_PRECACHE_EXTENTS: |
|
case FS_IOC_SET_ENCRYPTION_POLICY: |
|
case FS_IOC_GET_ENCRYPTION_PWSALT: |
|
case FS_IOC_GET_ENCRYPTION_POLICY: |
|
case FS_IOC_GET_ENCRYPTION_POLICY_EX: |
|
case FS_IOC_ADD_ENCRYPTION_KEY: |
|
case FS_IOC_REMOVE_ENCRYPTION_KEY: |
|
case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: |
|
case FS_IOC_GET_ENCRYPTION_KEY_STATUS: |
|
case FS_IOC_GET_ENCRYPTION_NONCE: |
|
case EXT4_IOC_SHUTDOWN: |
|
case FS_IOC_GETFSMAP: |
|
case FS_IOC_ENABLE_VERITY: |
|
case FS_IOC_MEASURE_VERITY: |
|
case FS_IOC_READ_VERITY_METADATA: |
|
case EXT4_IOC_CLEAR_ES_CACHE: |
|
case EXT4_IOC_GETSTATE: |
|
case EXT4_IOC_GET_ES_CACHE: |
|
case EXT4_IOC_CHECKPOINT: |
|
break; |
|
default: |
|
return -ENOIOCTLCMD; |
|
} |
|
return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); |
|
} |
|
#endif
|
|
|