1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 2ac27a0ecSDave Kleikamp /* 3617ba13bSMingming Cao * linux/fs/ext4/ioctl.c 4ac27a0ecSDave Kleikamp * 5ac27a0ecSDave Kleikamp * Copyright (C) 1993, 1994, 1995 6ac27a0ecSDave Kleikamp * Remy Card (card@masi.ibp.fr) 7ac27a0ecSDave Kleikamp * Laboratoire MASI - Institut Blaise Pascal 8ac27a0ecSDave Kleikamp * Universite Pierre et Marie Curie (Paris VI) 9ac27a0ecSDave Kleikamp */ 10ac27a0ecSDave Kleikamp 11ac27a0ecSDave Kleikamp #include <linux/fs.h> 12ac27a0ecSDave Kleikamp #include <linux/capability.h> 13ac27a0ecSDave Kleikamp #include <linux/time.h> 14ac27a0ecSDave Kleikamp #include <linux/compat.h> 1542a74f20SDave Hansen #include <linux/mount.h> 16748de673SAkira Fujita #include <linux/file.h> 179b7365fcSLi Xi #include <linux/quotaops.h> 1823253068STheodore Ts'o #include <linux/random.h> 198da4b8c4SAndy Shevchenko #include <linux/uuid.h> 207c0f6ba6SLinus Torvalds #include <linux/uaccess.h> 21783d9485STheodore Ts'o #include <linux/delay.h> 22ee73f9a5SJeff Layton #include <linux/iversion.h> 233dcf5451SChristoph Hellwig #include "ext4_jbd2.h" 243dcf5451SChristoph Hellwig #include "ext4.h" 250c9ec4beSDarrick J. Wong #include <linux/fsmap.h> 260c9ec4beSDarrick J. Wong #include "fsmap.h" 270c9ec4beSDarrick J. Wong #include <trace/events/ext4.h> 28ac27a0ecSDave Kleikamp 29393d1d1dSDr. Tilmann Bubeck /** 30393d1d1dSDr. Tilmann Bubeck * Swap memory between @a and @b for @len bytes. 31393d1d1dSDr. Tilmann Bubeck * 32393d1d1dSDr. Tilmann Bubeck * @a: pointer to first memory area 33393d1d1dSDr. Tilmann Bubeck * @b: pointer to second memory area 34393d1d1dSDr. Tilmann Bubeck * @len: number of bytes to swap 35393d1d1dSDr. Tilmann Bubeck * 36393d1d1dSDr. Tilmann Bubeck */ 37393d1d1dSDr. Tilmann Bubeck static void memswap(void *a, void *b, size_t len) 38393d1d1dSDr. Tilmann Bubeck { 39393d1d1dSDr. Tilmann Bubeck unsigned char *ap, *bp; 40393d1d1dSDr. Tilmann Bubeck 41393d1d1dSDr. Tilmann Bubeck ap = (unsigned char *)a; 42393d1d1dSDr. Tilmann Bubeck bp = (unsigned char *)b; 43393d1d1dSDr. Tilmann Bubeck while (len-- > 0) { 444b7e2db5SFabian Frederick swap(*ap, *bp); 45393d1d1dSDr. Tilmann Bubeck ap++; 46393d1d1dSDr. Tilmann Bubeck bp++; 47393d1d1dSDr. Tilmann Bubeck } 48393d1d1dSDr. Tilmann Bubeck } 49393d1d1dSDr. Tilmann Bubeck 50393d1d1dSDr. Tilmann Bubeck /** 51393d1d1dSDr. Tilmann Bubeck * Swap i_data and associated attributes between @inode1 and @inode2. 52393d1d1dSDr. Tilmann Bubeck * This function is used for the primary swap between inode1 and inode2 53393d1d1dSDr. Tilmann Bubeck * and also to revert this primary swap in case of errors. 54393d1d1dSDr. Tilmann Bubeck * 55393d1d1dSDr. Tilmann Bubeck * Therefore you have to make sure, that calling this method twice 56393d1d1dSDr. Tilmann Bubeck * will revert all changes. 57393d1d1dSDr. Tilmann Bubeck * 58393d1d1dSDr. Tilmann Bubeck * @inode1: pointer to first inode 59393d1d1dSDr. Tilmann Bubeck * @inode2: pointer to second inode 60393d1d1dSDr. Tilmann Bubeck */ 61393d1d1dSDr. Tilmann Bubeck static void swap_inode_data(struct inode *inode1, struct inode *inode2) 62393d1d1dSDr. Tilmann Bubeck { 63393d1d1dSDr. Tilmann Bubeck loff_t isize; 64393d1d1dSDr. Tilmann Bubeck struct ext4_inode_info *ei1; 65393d1d1dSDr. Tilmann Bubeck struct ext4_inode_info *ei2; 66abdc644eSyangerkun unsigned long tmp; 67393d1d1dSDr. Tilmann Bubeck 68393d1d1dSDr. Tilmann Bubeck ei1 = EXT4_I(inode1); 69393d1d1dSDr. Tilmann Bubeck ei2 = EXT4_I(inode2); 70393d1d1dSDr. Tilmann Bubeck 719c5d58fbSJeff Layton swap(inode1->i_version, inode2->i_version); 729c5d58fbSJeff Layton swap(inode1->i_atime, inode2->i_atime); 739c5d58fbSJeff Layton swap(inode1->i_mtime, inode2->i_mtime); 74393d1d1dSDr. Tilmann Bubeck 75393d1d1dSDr. Tilmann Bubeck memswap(ei1->i_data, ei2->i_data, sizeof(ei1->i_data)); 76abdc644eSyangerkun tmp = ei1->i_flags & EXT4_FL_SHOULD_SWAP; 77abdc644eSyangerkun ei1->i_flags = (ei2->i_flags & EXT4_FL_SHOULD_SWAP) | 78abdc644eSyangerkun (ei1->i_flags & ~EXT4_FL_SHOULD_SWAP); 79abdc644eSyangerkun ei2->i_flags = tmp | (ei2->i_flags & ~EXT4_FL_SHOULD_SWAP); 809c5d58fbSJeff Layton swap(ei1->i_disksize, ei2->i_disksize); 81cde2d7a7STheodore Ts'o ext4_es_remove_extent(inode1, 0, EXT_MAX_BLOCKS); 82cde2d7a7STheodore Ts'o ext4_es_remove_extent(inode2, 0, EXT_MAX_BLOCKS); 83393d1d1dSDr. Tilmann Bubeck 84393d1d1dSDr. Tilmann Bubeck isize = i_size_read(inode1); 85393d1d1dSDr. Tilmann Bubeck i_size_write(inode1, i_size_read(inode2)); 86393d1d1dSDr. Tilmann Bubeck i_size_write(inode2, isize); 87393d1d1dSDr. Tilmann Bubeck } 88393d1d1dSDr. Tilmann Bubeck 898016e29fSHarshad Shirwadkar void ext4_reset_inode_seed(struct inode *inode) 9018aded17STheodore Ts'o { 9118aded17STheodore Ts'o struct ext4_inode_info *ei = EXT4_I(inode); 9218aded17STheodore Ts'o struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); 9318aded17STheodore Ts'o __le32 inum = cpu_to_le32(inode->i_ino); 9418aded17STheodore Ts'o __le32 gen = cpu_to_le32(inode->i_generation); 9518aded17STheodore Ts'o __u32 csum; 9618aded17STheodore Ts'o 9718aded17STheodore Ts'o if (!ext4_has_metadata_csum(inode->i_sb)) 9818aded17STheodore Ts'o return; 9918aded17STheodore Ts'o 10018aded17STheodore Ts'o csum = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)&inum, sizeof(inum)); 10118aded17STheodore Ts'o ei->i_csum_seed = ext4_chksum(sbi, csum, (__u8 *)&gen, sizeof(gen)); 10218aded17STheodore Ts'o } 10318aded17STheodore Ts'o 104393d1d1dSDr. Tilmann Bubeck /** 105393d1d1dSDr. Tilmann Bubeck * Swap the information from the given @inode and the inode 106393d1d1dSDr. Tilmann Bubeck * EXT4_BOOT_LOADER_INO. It will basically swap i_data and all other 107393d1d1dSDr. Tilmann Bubeck * important fields of the inodes. 108393d1d1dSDr. Tilmann Bubeck * 109393d1d1dSDr. Tilmann Bubeck * @sb: the super block of the filesystem 11014f3db55SChristian Brauner * @mnt_userns: user namespace of the mount the inode was found from 111393d1d1dSDr. Tilmann Bubeck * @inode: the inode to swap with EXT4_BOOT_LOADER_INO 112393d1d1dSDr. Tilmann Bubeck * 113393d1d1dSDr. Tilmann Bubeck */ 114393d1d1dSDr. Tilmann Bubeck static long swap_inode_boot_loader(struct super_block *sb, 11514f3db55SChristian Brauner struct user_namespace *mnt_userns, 116393d1d1dSDr. Tilmann Bubeck struct inode *inode) 117393d1d1dSDr. Tilmann Bubeck { 118393d1d1dSDr. Tilmann Bubeck handle_t *handle; 119393d1d1dSDr. Tilmann Bubeck int err; 120393d1d1dSDr. Tilmann Bubeck struct inode *inode_bl; 121393d1d1dSDr. Tilmann Bubeck struct ext4_inode_info *ei_bl; 122aa507b5fSyangerkun qsize_t size, size_bl, diff; 123aa507b5fSyangerkun blkcnt_t blocks; 124aa507b5fSyangerkun unsigned short bytes; 125393d1d1dSDr. Tilmann Bubeck 1268a363970STheodore Ts'o inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO, EXT4_IGET_SPECIAL); 127d8558a29STheodore Ts'o if (IS_ERR(inode_bl)) 128d8558a29STheodore Ts'o return PTR_ERR(inode_bl); 129393d1d1dSDr. Tilmann Bubeck ei_bl = EXT4_I(inode_bl); 130393d1d1dSDr. Tilmann Bubeck 131393d1d1dSDr. Tilmann Bubeck /* Protect orig inodes against a truncate and make sure, 132393d1d1dSDr. Tilmann Bubeck * that only 1 swap_inode_boot_loader is running. */ 133375e289eSJ. Bruce Fields lock_two_nondirectories(inode, inode_bl); 134393d1d1dSDr. Tilmann Bubeck 13567a11611Syangerkun if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode) || 13667a11611Syangerkun IS_SWAPFILE(inode) || IS_ENCRYPTED(inode) || 1376e589291STheodore Ts'o (EXT4_I(inode)->i_flags & EXT4_JOURNAL_DATA_FL) || 13867a11611Syangerkun ext4_has_inline_data(inode)) { 13967a11611Syangerkun err = -EINVAL; 14067a11611Syangerkun goto journal_err_out; 14167a11611Syangerkun } 14267a11611Syangerkun 14367a11611Syangerkun if (IS_RDONLY(inode) || IS_APPEND(inode) || IS_IMMUTABLE(inode) || 14414f3db55SChristian Brauner !inode_owner_or_capable(mnt_userns, inode) || 14521cb47beSChristian Brauner !capable(CAP_SYS_ADMIN)) { 14667a11611Syangerkun err = -EPERM; 14767a11611Syangerkun goto journal_err_out; 14867a11611Syangerkun } 14967a11611Syangerkun 150a46c68a3Syangerkun down_write(&EXT4_I(inode)->i_mmap_sem); 151a46c68a3Syangerkun err = filemap_write_and_wait(inode->i_mapping); 152a46c68a3Syangerkun if (err) 153a46c68a3Syangerkun goto err_out; 154a46c68a3Syangerkun 155a46c68a3Syangerkun err = filemap_write_and_wait(inode_bl->i_mapping); 156a46c68a3Syangerkun if (err) 157a46c68a3Syangerkun goto err_out; 158a46c68a3Syangerkun 159393d1d1dSDr. Tilmann Bubeck /* Wait for all existing dio workers */ 160393d1d1dSDr. Tilmann Bubeck inode_dio_wait(inode); 161393d1d1dSDr. Tilmann Bubeck inode_dio_wait(inode_bl); 162393d1d1dSDr. Tilmann Bubeck 16318aded17STheodore Ts'o truncate_inode_pages(&inode->i_data, 0); 16418aded17STheodore Ts'o truncate_inode_pages(&inode_bl->i_data, 0); 16518aded17STheodore Ts'o 166393d1d1dSDr. Tilmann Bubeck handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2); 167393d1d1dSDr. Tilmann Bubeck if (IS_ERR(handle)) { 168393d1d1dSDr. Tilmann Bubeck err = -EINVAL; 169a46c68a3Syangerkun goto err_out; 170393d1d1dSDr. Tilmann Bubeck } 171aa75f4d3SHarshad Shirwadkar ext4_fc_start_ineligible(sb, EXT4_FC_REASON_SWAP_BOOT); 172393d1d1dSDr. Tilmann Bubeck 173393d1d1dSDr. Tilmann Bubeck /* Protect extent tree against block allocations via delalloc */ 174393d1d1dSDr. Tilmann Bubeck ext4_double_down_write_data_sem(inode, inode_bl); 175393d1d1dSDr. Tilmann Bubeck 176393d1d1dSDr. Tilmann Bubeck if (inode_bl->i_nlink == 0) { 177393d1d1dSDr. Tilmann Bubeck /* this inode has never been used as a BOOT_LOADER */ 178393d1d1dSDr. Tilmann Bubeck set_nlink(inode_bl, 1); 179393d1d1dSDr. Tilmann Bubeck i_uid_write(inode_bl, 0); 180393d1d1dSDr. Tilmann Bubeck i_gid_write(inode_bl, 0); 181393d1d1dSDr. Tilmann Bubeck inode_bl->i_flags = 0; 182393d1d1dSDr. Tilmann Bubeck ei_bl->i_flags = 0; 183ee73f9a5SJeff Layton inode_set_iversion(inode_bl, 1); 184393d1d1dSDr. Tilmann Bubeck i_size_write(inode_bl, 0); 185393d1d1dSDr. Tilmann Bubeck inode_bl->i_mode = S_IFREG; 186e2b911c5SDarrick J. Wong if (ext4_has_feature_extents(sb)) { 187393d1d1dSDr. Tilmann Bubeck ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS); 188393d1d1dSDr. Tilmann Bubeck ext4_ext_tree_init(handle, inode_bl); 189393d1d1dSDr. Tilmann Bubeck } else 190393d1d1dSDr. Tilmann Bubeck memset(ei_bl->i_data, 0, sizeof(ei_bl->i_data)); 191393d1d1dSDr. Tilmann Bubeck } 192393d1d1dSDr. Tilmann Bubeck 193aa507b5fSyangerkun err = dquot_initialize(inode); 194aa507b5fSyangerkun if (err) 195aa507b5fSyangerkun goto err_out1; 196aa507b5fSyangerkun 197aa507b5fSyangerkun size = (qsize_t)(inode->i_blocks) * (1 << 9) + inode->i_bytes; 198aa507b5fSyangerkun size_bl = (qsize_t)(inode_bl->i_blocks) * (1 << 9) + inode_bl->i_bytes; 199aa507b5fSyangerkun diff = size - size_bl; 200393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 201393d1d1dSDr. Tilmann Bubeck 202eeca7ea1SDeepa Dinamani inode->i_ctime = inode_bl->i_ctime = current_time(inode); 203393d1d1dSDr. Tilmann Bubeck 20423253068STheodore Ts'o inode->i_generation = prandom_u32(); 20523253068STheodore Ts'o inode_bl->i_generation = prandom_u32(); 2068016e29fSHarshad Shirwadkar ext4_reset_inode_seed(inode); 2078016e29fSHarshad Shirwadkar ext4_reset_inode_seed(inode_bl); 208393d1d1dSDr. Tilmann Bubeck 20927bc446eSbrookxu ext4_discard_preallocations(inode, 0); 210393d1d1dSDr. Tilmann Bubeck 211393d1d1dSDr. Tilmann Bubeck err = ext4_mark_inode_dirty(handle, inode); 212393d1d1dSDr. Tilmann Bubeck if (err < 0) { 213aa507b5fSyangerkun /* No need to update quota information. */ 214393d1d1dSDr. Tilmann Bubeck ext4_warning(inode->i_sb, 215393d1d1dSDr. Tilmann Bubeck "couldn't mark inode #%lu dirty (err %d)", 216393d1d1dSDr. Tilmann Bubeck inode->i_ino, err); 217393d1d1dSDr. Tilmann Bubeck /* Revert all changes: */ 218393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 21918aded17STheodore Ts'o ext4_mark_inode_dirty(handle, inode); 220aa507b5fSyangerkun goto err_out1; 221aa507b5fSyangerkun } 222aa507b5fSyangerkun 223aa507b5fSyangerkun blocks = inode_bl->i_blocks; 224aa507b5fSyangerkun bytes = inode_bl->i_bytes; 225aa507b5fSyangerkun inode_bl->i_blocks = inode->i_blocks; 226aa507b5fSyangerkun inode_bl->i_bytes = inode->i_bytes; 227393d1d1dSDr. Tilmann Bubeck err = ext4_mark_inode_dirty(handle, inode_bl); 228393d1d1dSDr. Tilmann Bubeck if (err < 0) { 229aa507b5fSyangerkun /* No need to update quota information. */ 230393d1d1dSDr. Tilmann Bubeck ext4_warning(inode_bl->i_sb, 231393d1d1dSDr. Tilmann Bubeck "couldn't mark inode #%lu dirty (err %d)", 232393d1d1dSDr. Tilmann Bubeck inode_bl->i_ino, err); 233aa507b5fSyangerkun goto revert; 234aa507b5fSyangerkun } 235aa507b5fSyangerkun 236aa507b5fSyangerkun /* Bootloader inode should not be counted into quota information. */ 237aa507b5fSyangerkun if (diff > 0) 238aa507b5fSyangerkun dquot_free_space(inode, diff); 239aa507b5fSyangerkun else 240aa507b5fSyangerkun err = dquot_alloc_space(inode, -1 * diff); 241aa507b5fSyangerkun 242aa507b5fSyangerkun if (err < 0) { 243aa507b5fSyangerkun revert: 244393d1d1dSDr. Tilmann Bubeck /* Revert all changes: */ 245aa507b5fSyangerkun inode_bl->i_blocks = blocks; 246aa507b5fSyangerkun inode_bl->i_bytes = bytes; 247393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 248393d1d1dSDr. Tilmann Bubeck ext4_mark_inode_dirty(handle, inode); 24918aded17STheodore Ts'o ext4_mark_inode_dirty(handle, inode_bl); 250393d1d1dSDr. Tilmann Bubeck } 251aa507b5fSyangerkun 252aa507b5fSyangerkun err_out1: 253393d1d1dSDr. Tilmann Bubeck ext4_journal_stop(handle); 254aa75f4d3SHarshad Shirwadkar ext4_fc_stop_ineligible(sb); 255393d1d1dSDr. Tilmann Bubeck ext4_double_up_write_data_sem(inode, inode_bl); 256393d1d1dSDr. Tilmann Bubeck 257a46c68a3Syangerkun err_out: 258a46c68a3Syangerkun up_write(&EXT4_I(inode)->i_mmap_sem); 25930d29b11SZheng Liu journal_err_out: 260375e289eSJ. Bruce Fields unlock_two_nondirectories(inode, inode_bl); 261393d1d1dSDr. Tilmann Bubeck iput(inode_bl); 262393d1d1dSDr. Tilmann Bubeck return err; 263393d1d1dSDr. Tilmann Bubeck } 264393d1d1dSDr. Tilmann Bubeck 265643fa961SChandan Rajendra #ifdef CONFIG_FS_ENCRYPTION 2669bd8212fSMichael Halcrow static int uuid_is_zero(__u8 u[16]) 2679bd8212fSMichael Halcrow { 2689bd8212fSMichael Halcrow int i; 2699bd8212fSMichael Halcrow 2709bd8212fSMichael Halcrow for (i = 0; i < 16; i++) 2719bd8212fSMichael Halcrow if (u[i]) 2729bd8212fSMichael Halcrow return 0; 2739bd8212fSMichael Halcrow return 1; 2749bd8212fSMichael Halcrow } 275ba679017SEric Biggers #endif 2769bd8212fSMichael Halcrow 2772e538403SDarrick J. Wong /* 2782e538403SDarrick J. Wong * If immutable is set and we are not clearing it, we're not allowed to change 2792e538403SDarrick J. Wong * anything else in the inode. Don't error out if we're only trying to set 2802e538403SDarrick J. Wong * immutable on an immutable file. 2812e538403SDarrick J. Wong */ 2822e538403SDarrick J. Wong static int ext4_ioctl_check_immutable(struct inode *inode, __u32 new_projid, 2832e538403SDarrick J. Wong unsigned int flags) 2842e538403SDarrick J. Wong { 2852e538403SDarrick J. Wong struct ext4_inode_info *ei = EXT4_I(inode); 2862e538403SDarrick J. Wong unsigned int oldflags = ei->i_flags; 2872e538403SDarrick J. Wong 2882e538403SDarrick J. Wong if (!(oldflags & EXT4_IMMUTABLE_FL) || !(flags & EXT4_IMMUTABLE_FL)) 2892e538403SDarrick J. Wong return 0; 2902e538403SDarrick J. Wong 2912e538403SDarrick J. Wong if ((oldflags & ~EXT4_IMMUTABLE_FL) != (flags & ~EXT4_IMMUTABLE_FL)) 2922e538403SDarrick J. Wong return -EPERM; 2932e538403SDarrick J. Wong if (ext4_has_feature_project(inode->i_sb) && 2942e538403SDarrick J. Wong __kprojid_val(ei->i_projid) != new_projid) 2952e538403SDarrick J. Wong return -EPERM; 2962e538403SDarrick J. Wong 2972e538403SDarrick J. Wong return 0; 2982e538403SDarrick J. Wong } 2992e538403SDarrick J. Wong 300b383a73fSIra Weiny static void ext4_dax_dontcache(struct inode *inode, unsigned int flags) 301b383a73fSIra Weiny { 302b383a73fSIra Weiny struct ext4_inode_info *ei = EXT4_I(inode); 303b383a73fSIra Weiny 304b383a73fSIra Weiny if (S_ISDIR(inode->i_mode)) 305b383a73fSIra Weiny return; 306b383a73fSIra Weiny 307b383a73fSIra Weiny if (test_opt2(inode->i_sb, DAX_NEVER) || 308b383a73fSIra Weiny test_opt(inode->i_sb, DAX_ALWAYS)) 309b383a73fSIra Weiny return; 310b383a73fSIra Weiny 311b383a73fSIra Weiny if ((ei->i_flags ^ flags) & EXT4_DAX_FL) 312b383a73fSIra Weiny d_mark_dontcache(inode); 313b383a73fSIra Weiny } 314b383a73fSIra Weiny 315b383a73fSIra Weiny static bool dax_compatible(struct inode *inode, unsigned int oldflags, 316b383a73fSIra Weiny unsigned int flags) 317b383a73fSIra Weiny { 318*4811d992STheodore Ts'o /* Allow the DAX flag to be changed on inline directories */ 319*4811d992STheodore Ts'o if (S_ISDIR(inode->i_mode)) { 320*4811d992STheodore Ts'o flags &= ~EXT4_INLINE_DATA_FL; 321*4811d992STheodore Ts'o oldflags &= ~EXT4_INLINE_DATA_FL; 322*4811d992STheodore Ts'o } 323*4811d992STheodore Ts'o 324b383a73fSIra Weiny if (flags & EXT4_DAX_FL) { 325b383a73fSIra Weiny if ((oldflags & EXT4_DAX_MUT_EXCL) || 326b383a73fSIra Weiny ext4_test_inode_state(inode, 327b383a73fSIra Weiny EXT4_STATE_VERITY_IN_PROGRESS)) { 328b383a73fSIra Weiny return false; 329b383a73fSIra Weiny } 330b383a73fSIra Weiny } 331b383a73fSIra Weiny 332b383a73fSIra Weiny if ((flags & EXT4_DAX_MUT_EXCL) && (oldflags & EXT4_DAX_FL)) 333b383a73fSIra Weiny return false; 334b383a73fSIra Weiny 335b383a73fSIra Weiny return true; 336b383a73fSIra Weiny } 337b383a73fSIra Weiny 3389b7365fcSLi Xi static int ext4_ioctl_setflags(struct inode *inode, 3399b7365fcSLi Xi unsigned int flags) 340ac27a0ecSDave Kleikamp { 341617ba13bSMingming Cao struct ext4_inode_info *ei = EXT4_I(inode); 342ac27a0ecSDave Kleikamp handle_t *handle = NULL; 343fdde368eSAnton Protopopov int err = -EPERM, migrate = 0; 344617ba13bSMingming Cao struct ext4_iloc iloc; 34579906964STheodore Ts'o unsigned int oldflags, mask, i; 346b886ee3eSGabriel Krisman Bertazi struct super_block *sb = inode->i_sb; 347ac27a0ecSDave Kleikamp 348e47776a0SJan Kara /* Is it quota file? Do not allow user to mess with it */ 34902749a4cSTahsin Erdogan if (ext4_is_quota_file(inode)) 35042a74f20SDave Hansen goto flags_out; 35142a74f20SDave Hansen 352ac27a0ecSDave Kleikamp oldflags = ei->i_flags; 353ac27a0ecSDave Kleikamp 3545aca2842SDarrick J. Wong err = vfs_ioc_setflags_prepare(inode, oldflags, flags); 3555aca2842SDarrick J. Wong if (err) 35642a74f20SDave Hansen goto flags_out; 357ac27a0ecSDave Kleikamp 358ac27a0ecSDave Kleikamp /* 359ac27a0ecSDave Kleikamp * The JOURNAL_DATA flag can only be changed by 360ac27a0ecSDave Kleikamp * the relevant capability. 361ac27a0ecSDave Kleikamp */ 362fcebc794SIra Weiny if ((flags ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { 36342a74f20SDave Hansen if (!capable(CAP_SYS_RESOURCE)) 36442a74f20SDave Hansen goto flags_out; 365ac27a0ecSDave Kleikamp } 366b383a73fSIra Weiny 367b383a73fSIra Weiny if (!dax_compatible(inode, oldflags, flags)) { 368b383a73fSIra Weiny err = -EOPNOTSUPP; 369b383a73fSIra Weiny goto flags_out; 370b383a73fSIra Weiny } 371b383a73fSIra Weiny 372996bb9fdSTheodore Ts'o if ((flags ^ oldflags) & EXT4_EXTENTS_FL) 3734db46fc2SAneesh Kumar K.V migrate = 1; 374ac27a0ecSDave Kleikamp 375b886ee3eSGabriel Krisman Bertazi if ((flags ^ oldflags) & EXT4_CASEFOLD_FL) { 376b886ee3eSGabriel Krisman Bertazi if (!ext4_has_feature_casefold(sb)) { 377b886ee3eSGabriel Krisman Bertazi err = -EOPNOTSUPP; 378b886ee3eSGabriel Krisman Bertazi goto flags_out; 379b886ee3eSGabriel Krisman Bertazi } 380b886ee3eSGabriel Krisman Bertazi 381b886ee3eSGabriel Krisman Bertazi if (!S_ISDIR(inode->i_mode)) { 382b886ee3eSGabriel Krisman Bertazi err = -ENOTDIR; 383b886ee3eSGabriel Krisman Bertazi goto flags_out; 384b886ee3eSGabriel Krisman Bertazi } 385b886ee3eSGabriel Krisman Bertazi 386b886ee3eSGabriel Krisman Bertazi if (!ext4_empty_dir(inode)) { 387b886ee3eSGabriel Krisman Bertazi err = -ENOTEMPTY; 388b886ee3eSGabriel Krisman Bertazi goto flags_out; 389b886ee3eSGabriel Krisman Bertazi } 390b886ee3eSGabriel Krisman Bertazi } 391b886ee3eSGabriel Krisman Bertazi 3922e538403SDarrick J. Wong /* 3932e538403SDarrick J. Wong * Wait for all pending directio and then flush all the dirty pages 3942e538403SDarrick J. Wong * for this file. The flush marks all the pages readonly, so any 3952e538403SDarrick J. Wong * subsequent attempt to write to the file (particularly mmap pages) 3962e538403SDarrick J. Wong * will come through the filesystem and fail. 3972e538403SDarrick J. Wong */ 3982e538403SDarrick J. Wong if (S_ISREG(inode->i_mode) && !IS_IMMUTABLE(inode) && 3992e538403SDarrick J. Wong (flags & EXT4_IMMUTABLE_FL)) { 4002e538403SDarrick J. Wong inode_dio_wait(inode); 4012e538403SDarrick J. Wong err = filemap_write_and_wait(inode->i_mapping); 4022e538403SDarrick J. Wong if (err) 4032e538403SDarrick J. Wong goto flags_out; 4042e538403SDarrick J. Wong } 4052e538403SDarrick J. Wong 4069924a92aSTheodore Ts'o handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 407ac27a0ecSDave Kleikamp if (IS_ERR(handle)) { 40842a74f20SDave Hansen err = PTR_ERR(handle); 40942a74f20SDave Hansen goto flags_out; 410ac27a0ecSDave Kleikamp } 411ac27a0ecSDave Kleikamp if (IS_SYNC(inode)) 4120390131bSFrank Mayhar ext4_handle_sync(handle); 413617ba13bSMingming Cao err = ext4_reserve_inode_write(handle, inode, &iloc); 414ac27a0ecSDave Kleikamp if (err) 415ac27a0ecSDave Kleikamp goto flags_err; 416ac27a0ecSDave Kleikamp 417b383a73fSIra Weiny ext4_dax_dontcache(inode, flags); 418b383a73fSIra Weiny 41979906964STheodore Ts'o for (i = 0, mask = 1; i < 32; i++, mask <<= 1) { 42079906964STheodore Ts'o if (!(mask & EXT4_FL_USER_MODIFIABLE)) 42179906964STheodore Ts'o continue; 422f8011d93SJan Kara /* These flags get special treatment later */ 423f8011d93SJan Kara if (mask == EXT4_JOURNAL_DATA_FL || mask == EXT4_EXTENTS_FL) 424f8011d93SJan Kara continue; 42579906964STheodore Ts'o if (mask & flags) 42679906964STheodore Ts'o ext4_set_inode_flag(inode, i); 42779906964STheodore Ts'o else 42879906964STheodore Ts'o ext4_clear_inode_flag(inode, i); 42979906964STheodore Ts'o } 430ac27a0ecSDave Kleikamp 431043546e4SIra Weiny ext4_set_inode_flags(inode, false); 432043546e4SIra Weiny 433eeca7ea1SDeepa Dinamani inode->i_ctime = current_time(inode); 434ac27a0ecSDave Kleikamp 435617ba13bSMingming Cao err = ext4_mark_iloc_dirty(handle, inode, &iloc); 436ac27a0ecSDave Kleikamp flags_err: 437617ba13bSMingming Cao ext4_journal_stop(handle); 43842a74f20SDave Hansen if (err) 43942a74f20SDave Hansen goto flags_out; 440ac27a0ecSDave Kleikamp 441fcebc794SIra Weiny if ((flags ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { 442e9072d85SRoss Zwisler /* 443e9072d85SRoss Zwisler * Changes to the journaling mode can cause unsafe changes to 444ff694ab6SIra Weiny * S_DAX if the inode is DAX 445e9072d85SRoss Zwisler */ 446ff694ab6SIra Weiny if (IS_DAX(inode)) { 447e9072d85SRoss Zwisler err = -EBUSY; 448e9072d85SRoss Zwisler goto flags_out; 449e9072d85SRoss Zwisler } 450e9072d85SRoss Zwisler 451fcebc794SIra Weiny err = ext4_change_inode_journal_flag(inode, 452fcebc794SIra Weiny flags & EXT4_JOURNAL_DATA_FL); 4534db46fc2SAneesh Kumar K.V if (err) 4544db46fc2SAneesh Kumar K.V goto flags_out; 455e9072d85SRoss Zwisler } 456996bb9fdSTheodore Ts'o if (migrate) { 457996bb9fdSTheodore Ts'o if (flags & EXT4_EXTENTS_FL) 4584db46fc2SAneesh Kumar K.V err = ext4_ext_migrate(inode); 459996bb9fdSTheodore Ts'o else 460996bb9fdSTheodore Ts'o err = ext4_ind_migrate(inode); 461996bb9fdSTheodore Ts'o } 462996bb9fdSTheodore Ts'o 46342a74f20SDave Hansen flags_out: 4649b7365fcSLi Xi return err; 4659b7365fcSLi Xi } 4669b7365fcSLi Xi 4679b7365fcSLi Xi #ifdef CONFIG_QUOTA 4689b7365fcSLi Xi static int ext4_ioctl_setproject(struct file *filp, __u32 projid) 4699b7365fcSLi Xi { 4709b7365fcSLi Xi struct inode *inode = file_inode(filp); 4719b7365fcSLi Xi struct super_block *sb = inode->i_sb; 4729b7365fcSLi Xi struct ext4_inode_info *ei = EXT4_I(inode); 4739b7365fcSLi Xi int err, rc; 4749b7365fcSLi Xi handle_t *handle; 4759b7365fcSLi Xi kprojid_t kprojid; 4769b7365fcSLi Xi struct ext4_iloc iloc; 4779b7365fcSLi Xi struct ext4_inode *raw_inode; 478079788d0SWang Shilong struct dquot *transfer_to[MAXQUOTAS] = { }; 4799b7365fcSLi Xi 4800b7b7779SKaho Ng if (!ext4_has_feature_project(sb)) { 4819b7365fcSLi Xi if (projid != EXT4_DEF_PROJID) 4829b7365fcSLi Xi return -EOPNOTSUPP; 4839b7365fcSLi Xi else 4849b7365fcSLi Xi return 0; 4859b7365fcSLi Xi } 4869b7365fcSLi Xi 4879b7365fcSLi Xi if (EXT4_INODE_SIZE(sb) <= EXT4_GOOD_OLD_INODE_SIZE) 4889b7365fcSLi Xi return -EOPNOTSUPP; 4899b7365fcSLi Xi 4909b7365fcSLi Xi kprojid = make_kprojid(&init_user_ns, (projid_t)projid); 4919b7365fcSLi Xi 4929b7365fcSLi Xi if (projid_eq(kprojid, EXT4_I(inode)->i_projid)) 4939b7365fcSLi Xi return 0; 4949b7365fcSLi Xi 4959b7365fcSLi Xi err = -EPERM; 4969b7365fcSLi Xi /* Is it quota file? Do not allow user to mess with it */ 49702749a4cSTahsin Erdogan if (ext4_is_quota_file(inode)) 498dc7ac6c4SWang Shilong return err; 4999b7365fcSLi Xi 5009b7365fcSLi Xi err = ext4_get_inode_loc(inode, &iloc); 5019b7365fcSLi Xi if (err) 502dc7ac6c4SWang Shilong return err; 5039b7365fcSLi Xi 5049b7365fcSLi Xi raw_inode = ext4_raw_inode(&iloc); 5059b7365fcSLi Xi if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) { 506c03b45b8SMiao Xie err = ext4_expand_extra_isize(inode, 507c03b45b8SMiao Xie EXT4_SB(sb)->s_want_extra_isize, 508c03b45b8SMiao Xie &iloc); 509c03b45b8SMiao Xie if (err) 510dc7ac6c4SWang Shilong return err; 511c03b45b8SMiao Xie } else { 5129b7365fcSLi Xi brelse(iloc.bh); 513c03b45b8SMiao Xie } 5149b7365fcSLi Xi 515182a79e0SWang Shilong err = dquot_initialize(inode); 516182a79e0SWang Shilong if (err) 517182a79e0SWang Shilong return err; 5189b7365fcSLi Xi 5199b7365fcSLi Xi handle = ext4_journal_start(inode, EXT4_HT_QUOTA, 5209b7365fcSLi Xi EXT4_QUOTA_INIT_BLOCKS(sb) + 5219b7365fcSLi Xi EXT4_QUOTA_DEL_BLOCKS(sb) + 3); 522dc7ac6c4SWang Shilong if (IS_ERR(handle)) 523dc7ac6c4SWang Shilong return PTR_ERR(handle); 5249b7365fcSLi Xi 5259b7365fcSLi Xi err = ext4_reserve_inode_write(handle, inode, &iloc); 5269b7365fcSLi Xi if (err) 5279b7365fcSLi Xi goto out_stop; 5289b7365fcSLi Xi 5299b7365fcSLi Xi transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); 530ff0bc084SSeth Forshee if (!IS_ERR(transfer_to[PRJQUOTA])) { 5317a9ca53aSTahsin Erdogan 5327a9ca53aSTahsin Erdogan /* __dquot_transfer() calls back ext4_get_inode_usage() which 5337a9ca53aSTahsin Erdogan * counts xattr inode references. 5347a9ca53aSTahsin Erdogan */ 5357a9ca53aSTahsin Erdogan down_read(&EXT4_I(inode)->xattr_sem); 5369b7365fcSLi Xi err = __dquot_transfer(inode, transfer_to); 5377a9ca53aSTahsin Erdogan up_read(&EXT4_I(inode)->xattr_sem); 5389b7365fcSLi Xi dqput(transfer_to[PRJQUOTA]); 5399b7365fcSLi Xi if (err) 5409b7365fcSLi Xi goto out_dirty; 5419b7365fcSLi Xi } 542079788d0SWang Shilong 5439b7365fcSLi Xi EXT4_I(inode)->i_projid = kprojid; 544eeca7ea1SDeepa Dinamani inode->i_ctime = current_time(inode); 5459b7365fcSLi Xi out_dirty: 5469b7365fcSLi Xi rc = ext4_mark_iloc_dirty(handle, inode, &iloc); 5479b7365fcSLi Xi if (!err) 5489b7365fcSLi Xi err = rc; 5499b7365fcSLi Xi out_stop: 5509b7365fcSLi Xi ext4_journal_stop(handle); 5519b7365fcSLi Xi return err; 5529b7365fcSLi Xi } 5539b7365fcSLi Xi #else 5549b7365fcSLi Xi static int ext4_ioctl_setproject(struct file *filp, __u32 projid) 5559b7365fcSLi Xi { 5569b7365fcSLi Xi if (projid != EXT4_DEF_PROJID) 5579b7365fcSLi Xi return -EOPNOTSUPP; 5589b7365fcSLi Xi return 0; 5599b7365fcSLi Xi } 5609b7365fcSLi Xi #endif 5619b7365fcSLi Xi 5629b7365fcSLi Xi /* Transfer internal flags to xflags */ 5639b7365fcSLi Xi static inline __u32 ext4_iflags_to_xflags(unsigned long iflags) 5649b7365fcSLi Xi { 5659b7365fcSLi Xi __u32 xflags = 0; 5669b7365fcSLi Xi 5679b7365fcSLi Xi if (iflags & EXT4_SYNC_FL) 5689b7365fcSLi Xi xflags |= FS_XFLAG_SYNC; 5699b7365fcSLi Xi if (iflags & EXT4_IMMUTABLE_FL) 5709b7365fcSLi Xi xflags |= FS_XFLAG_IMMUTABLE; 5719b7365fcSLi Xi if (iflags & EXT4_APPEND_FL) 5729b7365fcSLi Xi xflags |= FS_XFLAG_APPEND; 5739b7365fcSLi Xi if (iflags & EXT4_NODUMP_FL) 5749b7365fcSLi Xi xflags |= FS_XFLAG_NODUMP; 5759b7365fcSLi Xi if (iflags & EXT4_NOATIME_FL) 5769b7365fcSLi Xi xflags |= FS_XFLAG_NOATIME; 5779b7365fcSLi Xi if (iflags & EXT4_PROJINHERIT_FL) 5789b7365fcSLi Xi xflags |= FS_XFLAG_PROJINHERIT; 579b383a73fSIra Weiny if (iflags & EXT4_DAX_FL) 580b383a73fSIra Weiny xflags |= FS_XFLAG_DAX; 5819b7365fcSLi Xi return xflags; 5829b7365fcSLi Xi } 5839b7365fcSLi Xi 584d14e7683SJan Kara #define EXT4_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \ 585d14e7683SJan Kara FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \ 586b383a73fSIra Weiny FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT | \ 587b383a73fSIra Weiny FS_XFLAG_DAX) 588d14e7683SJan Kara 5899b7365fcSLi Xi /* Transfer xflags flags to internal */ 5909b7365fcSLi Xi static inline unsigned long ext4_xflags_to_iflags(__u32 xflags) 5919b7365fcSLi Xi { 5929b7365fcSLi Xi unsigned long iflags = 0; 5939b7365fcSLi Xi 5949b7365fcSLi Xi if (xflags & FS_XFLAG_SYNC) 5959b7365fcSLi Xi iflags |= EXT4_SYNC_FL; 5969b7365fcSLi Xi if (xflags & FS_XFLAG_IMMUTABLE) 5979b7365fcSLi Xi iflags |= EXT4_IMMUTABLE_FL; 5989b7365fcSLi Xi if (xflags & FS_XFLAG_APPEND) 5999b7365fcSLi Xi iflags |= EXT4_APPEND_FL; 6009b7365fcSLi Xi if (xflags & FS_XFLAG_NODUMP) 6019b7365fcSLi Xi iflags |= EXT4_NODUMP_FL; 6029b7365fcSLi Xi if (xflags & FS_XFLAG_NOATIME) 6039b7365fcSLi Xi iflags |= EXT4_NOATIME_FL; 6049b7365fcSLi Xi if (xflags & FS_XFLAG_PROJINHERIT) 6059b7365fcSLi Xi iflags |= EXT4_PROJINHERIT_FL; 606b383a73fSIra Weiny if (xflags & FS_XFLAG_DAX) 607b383a73fSIra Weiny iflags |= EXT4_DAX_FL; 6089b7365fcSLi Xi 6099b7365fcSLi Xi return iflags; 6109b7365fcSLi Xi } 6119b7365fcSLi Xi 6121a20a630SEric Biggers static int ext4_shutdown(struct super_block *sb, unsigned long arg) 613783d9485STheodore Ts'o { 614783d9485STheodore Ts'o struct ext4_sb_info *sbi = EXT4_SB(sb); 615783d9485STheodore Ts'o __u32 flags; 616783d9485STheodore Ts'o 617783d9485STheodore Ts'o if (!capable(CAP_SYS_ADMIN)) 618783d9485STheodore Ts'o return -EPERM; 619783d9485STheodore Ts'o 620783d9485STheodore Ts'o if (get_user(flags, (__u32 __user *)arg)) 621783d9485STheodore Ts'o return -EFAULT; 622783d9485STheodore Ts'o 623783d9485STheodore Ts'o if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH) 624783d9485STheodore Ts'o return -EINVAL; 625783d9485STheodore Ts'o 626783d9485STheodore Ts'o if (ext4_forced_shutdown(sbi)) 627783d9485STheodore Ts'o return 0; 628783d9485STheodore Ts'o 629783d9485STheodore Ts'o ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags); 630ccf0f32aSTheodore Ts'o trace_ext4_shutdown(sb, flags); 631783d9485STheodore Ts'o 632783d9485STheodore Ts'o switch (flags) { 633783d9485STheodore Ts'o case EXT4_GOING_FLAGS_DEFAULT: 634783d9485STheodore Ts'o freeze_bdev(sb->s_bdev); 635783d9485STheodore Ts'o set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 636040f04bdSChristoph Hellwig thaw_bdev(sb->s_bdev); 637783d9485STheodore Ts'o break; 638783d9485STheodore Ts'o case EXT4_GOING_FLAGS_LOGFLUSH: 639783d9485STheodore Ts'o set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 640783d9485STheodore Ts'o if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { 641783d9485STheodore Ts'o (void) ext4_force_commit(sb); 642fb7c0244STheodore Ts'o jbd2_journal_abort(sbi->s_journal, -ESHUTDOWN); 643783d9485STheodore Ts'o } 644783d9485STheodore Ts'o break; 645783d9485STheodore Ts'o case EXT4_GOING_FLAGS_NOLOGFLUSH: 646783d9485STheodore Ts'o set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 647a6d9946bSTheodore Ts'o if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) 648fb7c0244STheodore Ts'o jbd2_journal_abort(sbi->s_journal, -ESHUTDOWN); 649783d9485STheodore Ts'o break; 650783d9485STheodore Ts'o default: 651783d9485STheodore Ts'o return -EINVAL; 652783d9485STheodore Ts'o } 653783d9485STheodore Ts'o clear_opt(sb, DISCARD); 654783d9485STheodore Ts'o return 0; 655783d9485STheodore Ts'o } 656783d9485STheodore Ts'o 6570c9ec4beSDarrick J. Wong struct getfsmap_info { 6580c9ec4beSDarrick J. Wong struct super_block *gi_sb; 6590c9ec4beSDarrick J. Wong struct fsmap_head __user *gi_data; 6600c9ec4beSDarrick J. Wong unsigned int gi_idx; 6610c9ec4beSDarrick J. Wong __u32 gi_last_flags; 6620c9ec4beSDarrick J. Wong }; 6630c9ec4beSDarrick J. Wong 6640c9ec4beSDarrick J. Wong static int ext4_getfsmap_format(struct ext4_fsmap *xfm, void *priv) 6650c9ec4beSDarrick J. Wong { 6660c9ec4beSDarrick J. Wong struct getfsmap_info *info = priv; 6670c9ec4beSDarrick J. Wong struct fsmap fm; 6680c9ec4beSDarrick J. Wong 6690c9ec4beSDarrick J. Wong trace_ext4_getfsmap_mapping(info->gi_sb, xfm); 6700c9ec4beSDarrick J. Wong 6710c9ec4beSDarrick J. Wong info->gi_last_flags = xfm->fmr_flags; 6720c9ec4beSDarrick J. Wong ext4_fsmap_from_internal(info->gi_sb, &fm, xfm); 6730c9ec4beSDarrick J. Wong if (copy_to_user(&info->gi_data->fmh_recs[info->gi_idx++], &fm, 6740c9ec4beSDarrick J. Wong sizeof(struct fsmap))) 6750c9ec4beSDarrick J. Wong return -EFAULT; 6760c9ec4beSDarrick J. Wong 6770c9ec4beSDarrick J. Wong return 0; 6780c9ec4beSDarrick J. Wong } 6790c9ec4beSDarrick J. Wong 6800c9ec4beSDarrick J. Wong static int ext4_ioc_getfsmap(struct super_block *sb, 6810c9ec4beSDarrick J. Wong struct fsmap_head __user *arg) 6820c9ec4beSDarrick J. Wong { 6830ba33facSTheodore Ts'o struct getfsmap_info info = { NULL }; 6840c9ec4beSDarrick J. Wong struct ext4_fsmap_head xhead = {0}; 6850c9ec4beSDarrick J. Wong struct fsmap_head head; 6860c9ec4beSDarrick J. Wong bool aborted = false; 6870c9ec4beSDarrick J. Wong int error; 6880c9ec4beSDarrick J. Wong 6890c9ec4beSDarrick J. Wong if (copy_from_user(&head, arg, sizeof(struct fsmap_head))) 6900c9ec4beSDarrick J. Wong return -EFAULT; 6910c9ec4beSDarrick J. Wong if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) || 6920c9ec4beSDarrick J. Wong memchr_inv(head.fmh_keys[0].fmr_reserved, 0, 6930c9ec4beSDarrick J. Wong sizeof(head.fmh_keys[0].fmr_reserved)) || 6940c9ec4beSDarrick J. Wong memchr_inv(head.fmh_keys[1].fmr_reserved, 0, 6950c9ec4beSDarrick J. Wong sizeof(head.fmh_keys[1].fmr_reserved))) 6960c9ec4beSDarrick J. Wong return -EINVAL; 6970c9ec4beSDarrick J. Wong /* 6980c9ec4beSDarrick J. Wong * ext4 doesn't report file extents at all, so the only valid 6990c9ec4beSDarrick J. Wong * file offsets are the magic ones (all zeroes or all ones). 7000c9ec4beSDarrick J. Wong */ 7010c9ec4beSDarrick J. Wong if (head.fmh_keys[0].fmr_offset || 7020c9ec4beSDarrick J. Wong (head.fmh_keys[1].fmr_offset != 0 && 7030c9ec4beSDarrick J. Wong head.fmh_keys[1].fmr_offset != -1ULL)) 7040c9ec4beSDarrick J. Wong return -EINVAL; 7050c9ec4beSDarrick J. Wong 7060c9ec4beSDarrick J. Wong xhead.fmh_iflags = head.fmh_iflags; 7070c9ec4beSDarrick J. Wong xhead.fmh_count = head.fmh_count; 7080c9ec4beSDarrick J. Wong ext4_fsmap_to_internal(sb, &xhead.fmh_keys[0], &head.fmh_keys[0]); 7090c9ec4beSDarrick J. Wong ext4_fsmap_to_internal(sb, &xhead.fmh_keys[1], &head.fmh_keys[1]); 7100c9ec4beSDarrick J. Wong 7110c9ec4beSDarrick J. Wong trace_ext4_getfsmap_low_key(sb, &xhead.fmh_keys[0]); 7120c9ec4beSDarrick J. Wong trace_ext4_getfsmap_high_key(sb, &xhead.fmh_keys[1]); 7130c9ec4beSDarrick J. Wong 7140c9ec4beSDarrick J. Wong info.gi_sb = sb; 7150c9ec4beSDarrick J. Wong info.gi_data = arg; 7160c9ec4beSDarrick J. Wong error = ext4_getfsmap(sb, &xhead, ext4_getfsmap_format, &info); 7170c9ec4beSDarrick J. Wong if (error == EXT4_QUERY_RANGE_ABORT) { 7180c9ec4beSDarrick J. Wong error = 0; 7190c9ec4beSDarrick J. Wong aborted = true; 7200c9ec4beSDarrick J. Wong } else if (error) 7210c9ec4beSDarrick J. Wong return error; 7220c9ec4beSDarrick J. Wong 7230c9ec4beSDarrick J. Wong /* If we didn't abort, set the "last" flag in the last fmx */ 7240c9ec4beSDarrick J. Wong if (!aborted && info.gi_idx) { 7250c9ec4beSDarrick J. Wong info.gi_last_flags |= FMR_OF_LAST; 7260c9ec4beSDarrick J. Wong if (copy_to_user(&info.gi_data->fmh_recs[info.gi_idx - 1].fmr_flags, 7270c9ec4beSDarrick J. Wong &info.gi_last_flags, 7280c9ec4beSDarrick J. Wong sizeof(info.gi_last_flags))) 7290c9ec4beSDarrick J. Wong return -EFAULT; 7300c9ec4beSDarrick J. Wong } 7310c9ec4beSDarrick J. Wong 7320c9ec4beSDarrick J. Wong /* copy back header */ 7330c9ec4beSDarrick J. Wong head.fmh_entries = xhead.fmh_entries; 7340c9ec4beSDarrick J. Wong head.fmh_oflags = xhead.fmh_oflags; 7350c9ec4beSDarrick J. Wong if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) 7360c9ec4beSDarrick J. Wong return -EFAULT; 7370c9ec4beSDarrick J. Wong 7380c9ec4beSDarrick J. Wong return 0; 7390c9ec4beSDarrick J. Wong } 7400c9ec4beSDarrick J. Wong 741e145b35bSAl Viro static long ext4_ioctl_group_add(struct file *file, 742e145b35bSAl Viro struct ext4_new_group_data *input) 743e145b35bSAl Viro { 744e145b35bSAl Viro struct super_block *sb = file_inode(file)->i_sb; 745e145b35bSAl Viro int err, err2=0; 746e145b35bSAl Viro 747e145b35bSAl Viro err = ext4_resize_begin(sb); 748e145b35bSAl Viro if (err) 749e145b35bSAl Viro return err; 750e145b35bSAl Viro 751e145b35bSAl Viro if (ext4_has_feature_bigalloc(sb)) { 752e145b35bSAl Viro ext4_msg(sb, KERN_ERR, 753e145b35bSAl Viro "Online resizing not supported with bigalloc"); 754e145b35bSAl Viro err = -EOPNOTSUPP; 755e145b35bSAl Viro goto group_add_out; 756e145b35bSAl Viro } 757e145b35bSAl Viro 758e145b35bSAl Viro err = mnt_want_write_file(file); 759e145b35bSAl Viro if (err) 760e145b35bSAl Viro goto group_add_out; 761e145b35bSAl Viro 762e145b35bSAl Viro err = ext4_group_add(sb, input); 763e145b35bSAl Viro if (EXT4_SB(sb)->s_journal) { 764e145b35bSAl Viro jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 765e145b35bSAl Viro err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 766e145b35bSAl Viro jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 767e145b35bSAl Viro } 768e145b35bSAl Viro if (err == 0) 769e145b35bSAl Viro err = err2; 770e145b35bSAl Viro mnt_drop_write_file(file); 771e145b35bSAl Viro if (!err && ext4_has_group_desc_csum(sb) && 772e145b35bSAl Viro test_opt(sb, INIT_INODE_TABLE)) 773e145b35bSAl Viro err = ext4_register_li_request(sb, input->group); 774e145b35bSAl Viro group_add_out: 775e145b35bSAl Viro ext4_resize_end(sb); 776e145b35bSAl Viro return err; 777e145b35bSAl Viro } 778e145b35bSAl Viro 7797b0e492eSDarrick J. Wong static void ext4_fill_fsxattr(struct inode *inode, struct fsxattr *fa) 780dc7ac6c4SWang Shilong { 7817b0e492eSDarrick J. Wong struct ext4_inode_info *ei = EXT4_I(inode); 782dc7ac6c4SWang Shilong 7837b0e492eSDarrick J. Wong simple_fill_fsxattr(fa, ext4_iflags_to_xflags(ei->i_flags & 7847b0e492eSDarrick J. Wong EXT4_FL_USER_VISIBLE)); 785dc7ac6c4SWang Shilong 7867b0e492eSDarrick J. Wong if (ext4_has_feature_project(inode->i_sb)) 7877b0e492eSDarrick J. Wong fa->fsx_projid = from_kprojid(&init_user_ns, ei->i_projid); 788dc7ac6c4SWang Shilong } 789dc7ac6c4SWang Shilong 790bb5835edSTheodore Ts'o /* So that the fiemap access checks can't overflow on 32 bit machines. */ 791bb5835edSTheodore Ts'o #define FIEMAP_MAX_EXTENTS (UINT_MAX / sizeof(struct fiemap_extent)) 792bb5835edSTheodore Ts'o 793bb5835edSTheodore Ts'o static int ext4_ioctl_get_es_cache(struct file *filp, unsigned long arg) 794bb5835edSTheodore Ts'o { 795bb5835edSTheodore Ts'o struct fiemap fiemap; 796bb5835edSTheodore Ts'o struct fiemap __user *ufiemap = (struct fiemap __user *) arg; 797bb5835edSTheodore Ts'o struct fiemap_extent_info fieinfo = { 0, }; 798bb5835edSTheodore Ts'o struct inode *inode = file_inode(filp); 799bb5835edSTheodore Ts'o int error; 800bb5835edSTheodore Ts'o 801bb5835edSTheodore Ts'o if (copy_from_user(&fiemap, ufiemap, sizeof(fiemap))) 802bb5835edSTheodore Ts'o return -EFAULT; 803bb5835edSTheodore Ts'o 804bb5835edSTheodore Ts'o if (fiemap.fm_extent_count > FIEMAP_MAX_EXTENTS) 805bb5835edSTheodore Ts'o return -EINVAL; 806bb5835edSTheodore Ts'o 807bb5835edSTheodore Ts'o fieinfo.fi_flags = fiemap.fm_flags; 808bb5835edSTheodore Ts'o fieinfo.fi_extents_max = fiemap.fm_extent_count; 809bb5835edSTheodore Ts'o fieinfo.fi_extents_start = ufiemap->fm_extents; 810bb5835edSTheodore Ts'o 811328e24aeSChristoph Hellwig error = ext4_get_es_cache(inode, &fieinfo, fiemap.fm_start, 812328e24aeSChristoph Hellwig fiemap.fm_length); 813bb5835edSTheodore Ts'o fiemap.fm_flags = fieinfo.fi_flags; 814bb5835edSTheodore Ts'o fiemap.fm_mapped_extents = fieinfo.fi_extents_mapped; 815bb5835edSTheodore Ts'o if (copy_to_user(ufiemap, &fiemap, sizeof(fiemap))) 816bb5835edSTheodore Ts'o error = -EFAULT; 817bb5835edSTheodore Ts'o 818bb5835edSTheodore Ts'o return error; 819bb5835edSTheodore Ts'o } 820bb5835edSTheodore Ts'o 821aa75f4d3SHarshad Shirwadkar static long __ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 8229b7365fcSLi Xi { 8239b7365fcSLi Xi struct inode *inode = file_inode(filp); 8249b7365fcSLi Xi struct super_block *sb = inode->i_sb; 8259b7365fcSLi Xi struct ext4_inode_info *ei = EXT4_I(inode); 82614f3db55SChristian Brauner struct user_namespace *mnt_userns = file_mnt_user_ns(filp); 8279b7365fcSLi Xi unsigned int flags; 8289b7365fcSLi Xi 8299b7365fcSLi Xi ext4_debug("cmd = %u, arg = %lu\n", cmd, arg); 8309b7365fcSLi Xi 8319b7365fcSLi Xi switch (cmd) { 8320c9ec4beSDarrick J. Wong case FS_IOC_GETFSMAP: 8330c9ec4beSDarrick J. Wong return ext4_ioc_getfsmap(sb, (void __user *)arg); 834cb29a02dSEric Biggers case FS_IOC_GETFLAGS: 8359b7365fcSLi Xi flags = ei->i_flags & EXT4_FL_USER_VISIBLE; 8367ddf79a1SWang Shilong if (S_ISREG(inode->i_mode)) 8377ddf79a1SWang Shilong flags &= ~EXT4_PROJINHERIT_FL; 8389b7365fcSLi Xi return put_user(flags, (int __user *) arg); 839cb29a02dSEric Biggers case FS_IOC_SETFLAGS: { 8409b7365fcSLi Xi int err; 8419b7365fcSLi Xi 84214f3db55SChristian Brauner if (!inode_owner_or_capable(mnt_userns, inode)) 8439b7365fcSLi Xi return -EACCES; 8449b7365fcSLi Xi 8459b7365fcSLi Xi if (get_user(flags, (int __user *) arg)) 8469b7365fcSLi Xi return -EFAULT; 8479b7365fcSLi Xi 848d14e7683SJan Kara if (flags & ~EXT4_FL_USER_VISIBLE) 849d14e7683SJan Kara return -EOPNOTSUPP; 850d14e7683SJan Kara /* 851d14e7683SJan Kara * chattr(1) grabs flags via GETFLAGS, modifies the result and 852d14e7683SJan Kara * passes that to SETFLAGS. So we cannot easily make SETFLAGS 853d14e7683SJan Kara * more restrictive than just silently masking off visible but 854d14e7683SJan Kara * not settable flags as we always did. 855d14e7683SJan Kara */ 856d14e7683SJan Kara flags &= EXT4_FL_USER_MODIFIABLE; 857d14e7683SJan Kara if (ext4_mask_flags(inode->i_mode, flags) != flags) 858d14e7683SJan Kara return -EOPNOTSUPP; 859d14e7683SJan Kara 8609b7365fcSLi Xi err = mnt_want_write_file(filp); 8619b7365fcSLi Xi if (err) 8629b7365fcSLi Xi return err; 8639b7365fcSLi Xi 8645955102cSAl Viro inode_lock(inode); 8652e538403SDarrick J. Wong err = ext4_ioctl_check_immutable(inode, 8662e538403SDarrick J. Wong from_kprojid(&init_user_ns, ei->i_projid), 8672e538403SDarrick J. Wong flags); 8682e538403SDarrick J. Wong if (!err) 8699b7365fcSLi Xi err = ext4_ioctl_setflags(inode, flags); 8705955102cSAl Viro inode_unlock(inode); 8712a79f17eSAl Viro mnt_drop_write_file(filp); 872ac27a0ecSDave Kleikamp return err; 873ac27a0ecSDave Kleikamp } 874617ba13bSMingming Cao case EXT4_IOC_GETVERSION: 875617ba13bSMingming Cao case EXT4_IOC_GETVERSION_OLD: 876ac27a0ecSDave Kleikamp return put_user(inode->i_generation, (int __user *) arg); 877617ba13bSMingming Cao case EXT4_IOC_SETVERSION: 878617ba13bSMingming Cao case EXT4_IOC_SETVERSION_OLD: { 879ac27a0ecSDave Kleikamp handle_t *handle; 880617ba13bSMingming Cao struct ext4_iloc iloc; 881ac27a0ecSDave Kleikamp __u32 generation; 882ac27a0ecSDave Kleikamp int err; 883ac27a0ecSDave Kleikamp 88414f3db55SChristian Brauner if (!inode_owner_or_capable(mnt_userns, inode)) 885ac27a0ecSDave Kleikamp return -EPERM; 88642a74f20SDave Hansen 8879aa5d32bSDmitry Monakhov if (ext4_has_metadata_csum(inode->i_sb)) { 888814525f4SDarrick J. Wong ext4_warning(sb, "Setting inode version is not " 889814525f4SDarrick J. Wong "supported with metadata_csum enabled."); 890814525f4SDarrick J. Wong return -ENOTTY; 891814525f4SDarrick J. Wong } 892814525f4SDarrick J. Wong 893a561be71SAl Viro err = mnt_want_write_file(filp); 89442a74f20SDave Hansen if (err) 89542a74f20SDave Hansen return err; 89642a74f20SDave Hansen if (get_user(generation, (int __user *) arg)) { 89742a74f20SDave Hansen err = -EFAULT; 89842a74f20SDave Hansen goto setversion_out; 89942a74f20SDave Hansen } 900ac27a0ecSDave Kleikamp 9015955102cSAl Viro inode_lock(inode); 9029924a92aSTheodore Ts'o handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 90342a74f20SDave Hansen if (IS_ERR(handle)) { 90442a74f20SDave Hansen err = PTR_ERR(handle); 9056c2155b9SDjalal Harouni goto unlock_out; 90642a74f20SDave Hansen } 907617ba13bSMingming Cao err = ext4_reserve_inode_write(handle, inode, &iloc); 908ac27a0ecSDave Kleikamp if (err == 0) { 909eeca7ea1SDeepa Dinamani inode->i_ctime = current_time(inode); 910ac27a0ecSDave Kleikamp inode->i_generation = generation; 911617ba13bSMingming Cao err = ext4_mark_iloc_dirty(handle, inode, &iloc); 912ac27a0ecSDave Kleikamp } 913617ba13bSMingming Cao ext4_journal_stop(handle); 9146c2155b9SDjalal Harouni 9156c2155b9SDjalal Harouni unlock_out: 9165955102cSAl Viro inode_unlock(inode); 91742a74f20SDave Hansen setversion_out: 9182a79f17eSAl Viro mnt_drop_write_file(filp); 919ac27a0ecSDave Kleikamp return err; 920ac27a0ecSDave Kleikamp } 921617ba13bSMingming Cao case EXT4_IOC_GROUP_EXTEND: { 922617ba13bSMingming Cao ext4_fsblk_t n_blocks_count; 923ac046f1dSPeng Tao int err, err2=0; 924ac27a0ecSDave Kleikamp 9258f82f840SYongqiang Yang err = ext4_resize_begin(sb); 9268f82f840SYongqiang Yang if (err) 9278f82f840SYongqiang Yang return err; 928ac27a0ecSDave Kleikamp 929014a1770SDjalal Harouni if (get_user(n_blocks_count, (__u32 __user *)arg)) { 930014a1770SDjalal Harouni err = -EFAULT; 931014a1770SDjalal Harouni goto group_extend_out; 932014a1770SDjalal Harouni } 933ac27a0ecSDave Kleikamp 934e2b911c5SDarrick J. Wong if (ext4_has_feature_bigalloc(sb)) { 935bab08ab9STheodore Ts'o ext4_msg(sb, KERN_ERR, 936bab08ab9STheodore Ts'o "Online resizing not supported with bigalloc"); 937014a1770SDjalal Harouni err = -EOPNOTSUPP; 938014a1770SDjalal Harouni goto group_extend_out; 939bab08ab9STheodore Ts'o } 940bab08ab9STheodore Ts'o 941a561be71SAl Viro err = mnt_want_write_file(filp); 94242a74f20SDave Hansen if (err) 943014a1770SDjalal Harouni goto group_extend_out; 94442a74f20SDave Hansen 945617ba13bSMingming Cao err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count); 946ac046f1dSPeng Tao if (EXT4_SB(sb)->s_journal) { 947dab291afSMingming Cao jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 9487ffe1ea8SHidehiro Kawai err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 949dab291afSMingming Cao jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 950ac046f1dSPeng Tao } 9517ffe1ea8SHidehiro Kawai if (err == 0) 9527ffe1ea8SHidehiro Kawai err = err2; 9532a79f17eSAl Viro mnt_drop_write_file(filp); 954014a1770SDjalal Harouni group_extend_out: 9558f82f840SYongqiang Yang ext4_resize_end(sb); 956ac27a0ecSDave Kleikamp return err; 957ac27a0ecSDave Kleikamp } 958748de673SAkira Fujita 959748de673SAkira Fujita case EXT4_IOC_MOVE_EXT: { 960748de673SAkira Fujita struct move_extent me; 9612903ff01SAl Viro struct fd donor; 9622903ff01SAl Viro int err; 963748de673SAkira Fujita 9644a58579bSAkira Fujita if (!(filp->f_mode & FMODE_READ) || 9654a58579bSAkira Fujita !(filp->f_mode & FMODE_WRITE)) 9664a58579bSAkira Fujita return -EBADF; 9674a58579bSAkira Fujita 968748de673SAkira Fujita if (copy_from_user(&me, 969748de673SAkira Fujita (struct move_extent __user *)arg, sizeof(me))) 970748de673SAkira Fujita return -EFAULT; 9714a58579bSAkira Fujita me.moved_len = 0; 972748de673SAkira Fujita 9732903ff01SAl Viro donor = fdget(me.donor_fd); 9742903ff01SAl Viro if (!donor.file) 975748de673SAkira Fujita return -EBADF; 976748de673SAkira Fujita 9772903ff01SAl Viro if (!(donor.file->f_mode & FMODE_WRITE)) { 9784a58579bSAkira Fujita err = -EBADF; 9794a58579bSAkira Fujita goto mext_out; 980748de673SAkira Fujita } 981748de673SAkira Fujita 982e2b911c5SDarrick J. Wong if (ext4_has_feature_bigalloc(sb)) { 983bab08ab9STheodore Ts'o ext4_msg(sb, KERN_ERR, 984bab08ab9STheodore Ts'o "Online defrag not supported with bigalloc"); 985399c9b86SAl Viro err = -EOPNOTSUPP; 986399c9b86SAl Viro goto mext_out; 98773f34a5eSRoss Zwisler } else if (IS_DAX(inode)) { 98873f34a5eSRoss Zwisler ext4_msg(sb, KERN_ERR, 98973f34a5eSRoss Zwisler "Online defrag not supported with DAX"); 99073f34a5eSRoss Zwisler err = -EOPNOTSUPP; 99173f34a5eSRoss Zwisler goto mext_out; 992bab08ab9STheodore Ts'o } 993bab08ab9STheodore Ts'o 994a561be71SAl Viro err = mnt_want_write_file(filp); 9954a58579bSAkira Fujita if (err) 9964a58579bSAkira Fujita goto mext_out; 9974a58579bSAkira Fujita 9982903ff01SAl Viro err = ext4_move_extents(filp, donor.file, me.orig_start, 999748de673SAkira Fujita me.donor_start, me.len, &me.moved_len); 10002a79f17eSAl Viro mnt_drop_write_file(filp); 1001748de673SAkira Fujita 1002c437b273SAkira Fujita if (copy_to_user((struct move_extent __user *)arg, 1003c437b273SAkira Fujita &me, sizeof(me))) 10044a58579bSAkira Fujita err = -EFAULT; 10054a58579bSAkira Fujita mext_out: 10062903ff01SAl Viro fdput(donor); 1007748de673SAkira Fujita return err; 1008748de673SAkira Fujita } 1009748de673SAkira Fujita 1010617ba13bSMingming Cao case EXT4_IOC_GROUP_ADD: { 1011617ba13bSMingming Cao struct ext4_new_group_data input; 1012ac27a0ecSDave Kleikamp 1013617ba13bSMingming Cao if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg, 1014e145b35bSAl Viro sizeof(input))) 1015e145b35bSAl Viro return -EFAULT; 1016ac27a0ecSDave Kleikamp 1017e145b35bSAl Viro return ext4_ioctl_group_add(filp, &input); 1018ac27a0ecSDave Kleikamp } 1019ac27a0ecSDave Kleikamp 1020c14c6fd5SAneesh Kumar K.V case EXT4_IOC_MIGRATE: 10212a43a878SAneesh Kumar K.V { 10222a43a878SAneesh Kumar K.V int err; 102314f3db55SChristian Brauner if (!inode_owner_or_capable(mnt_userns, inode)) 10242a43a878SAneesh Kumar K.V return -EACCES; 10252a43a878SAneesh Kumar K.V 1026a561be71SAl Viro err = mnt_want_write_file(filp); 10272a43a878SAneesh Kumar K.V if (err) 10282a43a878SAneesh Kumar K.V return err; 10292a43a878SAneesh Kumar K.V /* 10302a43a878SAneesh Kumar K.V * inode_mutex prevent write and truncate on the file. 10312a43a878SAneesh Kumar K.V * Read still goes through. We take i_data_sem in 10322a43a878SAneesh Kumar K.V * ext4_ext_swap_inode_data before we switch the 10332a43a878SAneesh Kumar K.V * inode format to prevent read. 10342a43a878SAneesh Kumar K.V */ 10355955102cSAl Viro inode_lock((inode)); 10362a43a878SAneesh Kumar K.V err = ext4_ext_migrate(inode); 10375955102cSAl Viro inode_unlock((inode)); 10382a79f17eSAl Viro mnt_drop_write_file(filp); 10392a43a878SAneesh Kumar K.V return err; 10402a43a878SAneesh Kumar K.V } 1041c14c6fd5SAneesh Kumar K.V 1042ccd2506bSTheodore Ts'o case EXT4_IOC_ALLOC_DA_BLKS: 1043ccd2506bSTheodore Ts'o { 1044ccd2506bSTheodore Ts'o int err; 104514f3db55SChristian Brauner if (!inode_owner_or_capable(mnt_userns, inode)) 1046ccd2506bSTheodore Ts'o return -EACCES; 1047ccd2506bSTheodore Ts'o 1048a561be71SAl Viro err = mnt_want_write_file(filp); 1049ccd2506bSTheodore Ts'o if (err) 1050ccd2506bSTheodore Ts'o return err; 1051ccd2506bSTheodore Ts'o err = ext4_alloc_da_blocks(inode); 10522a79f17eSAl Viro mnt_drop_write_file(filp); 1053ccd2506bSTheodore Ts'o return err; 1054ccd2506bSTheodore Ts'o } 1055ccd2506bSTheodore Ts'o 1056393d1d1dSDr. Tilmann Bubeck case EXT4_IOC_SWAP_BOOT: 10573e67cfadSDmitry Monakhov { 10583e67cfadSDmitry Monakhov int err; 1059393d1d1dSDr. Tilmann Bubeck if (!(filp->f_mode & FMODE_WRITE)) 1060393d1d1dSDr. Tilmann Bubeck return -EBADF; 10613e67cfadSDmitry Monakhov err = mnt_want_write_file(filp); 10623e67cfadSDmitry Monakhov if (err) 10633e67cfadSDmitry Monakhov return err; 106414f3db55SChristian Brauner err = swap_inode_boot_loader(sb, mnt_userns, inode); 10653e67cfadSDmitry Monakhov mnt_drop_write_file(filp); 10663e67cfadSDmitry Monakhov return err; 10673e67cfadSDmitry Monakhov } 1068393d1d1dSDr. Tilmann Bubeck 106919c5246dSYongqiang Yang case EXT4_IOC_RESIZE_FS: { 107019c5246dSYongqiang Yang ext4_fsblk_t n_blocks_count; 107119c5246dSYongqiang Yang int err = 0, err2 = 0; 10727f511862STheodore Ts'o ext4_group_t o_group = EXT4_SB(sb)->s_groups_count; 107319c5246dSYongqiang Yang 107419c5246dSYongqiang Yang if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, 107519c5246dSYongqiang Yang sizeof(__u64))) { 107619c5246dSYongqiang Yang return -EFAULT; 107719c5246dSYongqiang Yang } 107819c5246dSYongqiang Yang 107919c5246dSYongqiang Yang err = ext4_resize_begin(sb); 108019c5246dSYongqiang Yang if (err) 108119c5246dSYongqiang Yang return err; 108219c5246dSYongqiang Yang 10838cae6f71SAl Viro err = mnt_want_write_file(filp); 108419c5246dSYongqiang Yang if (err) 108519c5246dSYongqiang Yang goto resizefs_out; 108619c5246dSYongqiang Yang 108719c5246dSYongqiang Yang err = ext4_resize_fs(sb, n_blocks_count); 108819c5246dSYongqiang Yang if (EXT4_SB(sb)->s_journal) { 1089aa75f4d3SHarshad Shirwadkar ext4_fc_mark_ineligible(sb, EXT4_FC_REASON_RESIZE); 109019c5246dSYongqiang Yang jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 109119c5246dSYongqiang Yang err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 109219c5246dSYongqiang Yang jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 109319c5246dSYongqiang Yang } 109419c5246dSYongqiang Yang if (err == 0) 109519c5246dSYongqiang Yang err = err2; 10968cae6f71SAl Viro mnt_drop_write_file(filp); 1097310a997fSKirill Tkhai if (!err && (o_group < EXT4_SB(sb)->s_groups_count) && 10987f511862STheodore Ts'o ext4_has_group_desc_csum(sb) && 10997f511862STheodore Ts'o test_opt(sb, INIT_INODE_TABLE)) 11007f511862STheodore Ts'o err = ext4_register_li_request(sb, o_group); 11017f511862STheodore Ts'o 110219c5246dSYongqiang Yang resizefs_out: 110319c5246dSYongqiang Yang ext4_resize_end(sb); 110419c5246dSYongqiang Yang return err; 110519c5246dSYongqiang Yang } 110619c5246dSYongqiang Yang 1107e681c047SLukas Czerner case FITRIM: 1108e681c047SLukas Czerner { 110941431792SLukas Czerner struct request_queue *q = bdev_get_queue(sb->s_bdev); 1110e681c047SLukas Czerner struct fstrim_range range; 1111e681c047SLukas Czerner int ret = 0; 1112e681c047SLukas Czerner 1113e681c047SLukas Czerner if (!capable(CAP_SYS_ADMIN)) 1114e681c047SLukas Czerner return -EPERM; 1115e681c047SLukas Czerner 111641431792SLukas Czerner if (!blk_queue_discard(q)) 111741431792SLukas Czerner return -EOPNOTSUPP; 111841431792SLukas Czerner 111918915b58SDarrick J. Wong /* 112018915b58SDarrick J. Wong * We haven't replayed the journal, so we cannot use our 112118915b58SDarrick J. Wong * block-bitmap-guided storage zapping commands. 112218915b58SDarrick J. Wong */ 112318915b58SDarrick J. Wong if (test_opt(sb, NOLOAD) && ext4_has_feature_journal(sb)) 112418915b58SDarrick J. Wong return -EROFS; 112518915b58SDarrick J. Wong 1126e6705f7cSH Hartley Sweeten if (copy_from_user(&range, (struct fstrim_range __user *)arg, 1127e681c047SLukas Czerner sizeof(range))) 1128e681c047SLukas Czerner return -EFAULT; 1129e681c047SLukas Czerner 11305c2ed62fSLukas Czerner range.minlen = max((unsigned int)range.minlen, 11315c2ed62fSLukas Czerner q->limits.discard_granularity); 1132e681c047SLukas Czerner ret = ext4_trim_fs(sb, &range); 1133e681c047SLukas Czerner if (ret < 0) 1134e681c047SLukas Czerner return ret; 1135e681c047SLukas Czerner 1136e6705f7cSH Hartley Sweeten if (copy_to_user((struct fstrim_range __user *)arg, &range, 1137e681c047SLukas Czerner sizeof(range))) 1138e681c047SLukas Czerner return -EFAULT; 1139e681c047SLukas Czerner 1140e681c047SLukas Czerner return 0; 1141e681c047SLukas Czerner } 11427869a4a6STheodore Ts'o case EXT4_IOC_PRECACHE_EXTENTS: 11437869a4a6STheodore Ts'o return ext4_ext_precache(inode); 1144e681c047SLukas Czerner 1145cb29a02dSEric Biggers case FS_IOC_SET_ENCRYPTION_POLICY: 11469a200d07SRichard Weinberger if (!ext4_has_feature_encrypt(sb)) 11479a200d07SRichard Weinberger return -EOPNOTSUPP; 1148db717d8eSEric Biggers return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); 11499a200d07SRichard Weinberger 1150cb29a02dSEric Biggers case FS_IOC_GET_ENCRYPTION_PWSALT: { 1151643fa961SChandan Rajendra #ifdef CONFIG_FS_ENCRYPTION 11529bd8212fSMichael Halcrow int err, err2; 11539bd8212fSMichael Halcrow struct ext4_sb_info *sbi = EXT4_SB(sb); 11549bd8212fSMichael Halcrow handle_t *handle; 11559bd8212fSMichael Halcrow 115635997d1cSEric Biggers if (!ext4_has_feature_encrypt(sb)) 11579bd8212fSMichael Halcrow return -EOPNOTSUPP; 11589bd8212fSMichael Halcrow if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) { 11599bd8212fSMichael Halcrow err = mnt_want_write_file(filp); 11609bd8212fSMichael Halcrow if (err) 11619bd8212fSMichael Halcrow return err; 11629bd8212fSMichael Halcrow handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1); 11639bd8212fSMichael Halcrow if (IS_ERR(handle)) { 11649bd8212fSMichael Halcrow err = PTR_ERR(handle); 11659bd8212fSMichael Halcrow goto pwsalt_err_exit; 11669bd8212fSMichael Halcrow } 11679bd8212fSMichael Halcrow err = ext4_journal_get_write_access(handle, sbi->s_sbh); 11689bd8212fSMichael Halcrow if (err) 11699bd8212fSMichael Halcrow goto pwsalt_err_journal; 1170dfd56c2cSJan Kara lock_buffer(sbi->s_sbh); 11719bd8212fSMichael Halcrow generate_random_uuid(sbi->s_es->s_encrypt_pw_salt); 1172dfd56c2cSJan Kara ext4_superblock_csum_set(sb); 1173dfd56c2cSJan Kara unlock_buffer(sbi->s_sbh); 11749bd8212fSMichael Halcrow err = ext4_handle_dirty_metadata(handle, NULL, 11759bd8212fSMichael Halcrow sbi->s_sbh); 11769bd8212fSMichael Halcrow pwsalt_err_journal: 11779bd8212fSMichael Halcrow err2 = ext4_journal_stop(handle); 11789bd8212fSMichael Halcrow if (err2 && !err) 11799bd8212fSMichael Halcrow err = err2; 11809bd8212fSMichael Halcrow pwsalt_err_exit: 11819bd8212fSMichael Halcrow mnt_drop_write_file(filp); 11829bd8212fSMichael Halcrow if (err) 11839bd8212fSMichael Halcrow return err; 11849bd8212fSMichael Halcrow } 1185b4ab9e29SFabian Frederick if (copy_to_user((void __user *) arg, 1186b4ab9e29SFabian Frederick sbi->s_es->s_encrypt_pw_salt, 16)) 11879bd8212fSMichael Halcrow return -EFAULT; 11889bd8212fSMichael Halcrow return 0; 1189ba679017SEric Biggers #else 1190ba679017SEric Biggers return -EOPNOTSUPP; 1191ba679017SEric Biggers #endif 11929bd8212fSMichael Halcrow } 1193cb29a02dSEric Biggers case FS_IOC_GET_ENCRYPTION_POLICY: 11940642ea24SChao Yu if (!ext4_has_feature_encrypt(sb)) 11950642ea24SChao Yu return -EOPNOTSUPP; 1196db717d8eSEric Biggers return fscrypt_ioctl_get_policy(filp, (void __user *)arg); 11979bd8212fSMichael Halcrow 119829b3692eSEric Biggers case FS_IOC_GET_ENCRYPTION_POLICY_EX: 119929b3692eSEric Biggers if (!ext4_has_feature_encrypt(sb)) 120029b3692eSEric Biggers return -EOPNOTSUPP; 120129b3692eSEric Biggers return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg); 120229b3692eSEric Biggers 120329b3692eSEric Biggers case FS_IOC_ADD_ENCRYPTION_KEY: 120429b3692eSEric Biggers if (!ext4_has_feature_encrypt(sb)) 120529b3692eSEric Biggers return -EOPNOTSUPP; 120629b3692eSEric Biggers return fscrypt_ioctl_add_key(filp, (void __user *)arg); 120729b3692eSEric Biggers 120829b3692eSEric Biggers case FS_IOC_REMOVE_ENCRYPTION_KEY: 120929b3692eSEric Biggers if (!ext4_has_feature_encrypt(sb)) 121029b3692eSEric Biggers return -EOPNOTSUPP; 121129b3692eSEric Biggers return fscrypt_ioctl_remove_key(filp, (void __user *)arg); 121229b3692eSEric Biggers 121329b3692eSEric Biggers case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: 121429b3692eSEric Biggers if (!ext4_has_feature_encrypt(sb)) 121529b3692eSEric Biggers return -EOPNOTSUPP; 121629b3692eSEric Biggers return fscrypt_ioctl_remove_key_all_users(filp, 121729b3692eSEric Biggers (void __user *)arg); 121829b3692eSEric Biggers case FS_IOC_GET_ENCRYPTION_KEY_STATUS: 121929b3692eSEric Biggers if (!ext4_has_feature_encrypt(sb)) 122029b3692eSEric Biggers return -EOPNOTSUPP; 122129b3692eSEric Biggers return fscrypt_ioctl_get_key_status(filp, (void __user *)arg); 122229b3692eSEric Biggers 12237ec9f3b4SEric Biggers case FS_IOC_GET_ENCRYPTION_NONCE: 12247ec9f3b4SEric Biggers if (!ext4_has_feature_encrypt(sb)) 12257ec9f3b4SEric Biggers return -EOPNOTSUPP; 12267ec9f3b4SEric Biggers return fscrypt_ioctl_get_nonce(filp, (void __user *)arg); 12277ec9f3b4SEric Biggers 1228b0c013e2STheodore Ts'o case EXT4_IOC_CLEAR_ES_CACHE: 1229b0c013e2STheodore Ts'o { 123014f3db55SChristian Brauner if (!inode_owner_or_capable(mnt_userns, inode)) 1231b0c013e2STheodore Ts'o return -EACCES; 1232b0c013e2STheodore Ts'o ext4_clear_inode_es(inode); 1233b0c013e2STheodore Ts'o return 0; 1234b0c013e2STheodore Ts'o } 1235b0c013e2STheodore Ts'o 12361ad3ea6eSTheodore Ts'o case EXT4_IOC_GETSTATE: 12371ad3ea6eSTheodore Ts'o { 12381ad3ea6eSTheodore Ts'o __u32 state = 0; 12391ad3ea6eSTheodore Ts'o 12401ad3ea6eSTheodore Ts'o if (ext4_test_inode_state(inode, EXT4_STATE_EXT_PRECACHED)) 12411ad3ea6eSTheodore Ts'o state |= EXT4_STATE_FLAG_EXT_PRECACHED; 12421ad3ea6eSTheodore Ts'o if (ext4_test_inode_state(inode, EXT4_STATE_NEW)) 12431ad3ea6eSTheodore Ts'o state |= EXT4_STATE_FLAG_NEW; 12441ad3ea6eSTheodore Ts'o if (ext4_test_inode_state(inode, EXT4_STATE_NEWENTRY)) 12451ad3ea6eSTheodore Ts'o state |= EXT4_STATE_FLAG_NEWENTRY; 12461ad3ea6eSTheodore Ts'o if (ext4_test_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE)) 12471ad3ea6eSTheodore Ts'o state |= EXT4_STATE_FLAG_DA_ALLOC_CLOSE; 12481ad3ea6eSTheodore Ts'o 12491ad3ea6eSTheodore Ts'o return put_user(state, (__u32 __user *) arg); 12501ad3ea6eSTheodore Ts'o } 12511ad3ea6eSTheodore Ts'o 1252bb5835edSTheodore Ts'o case EXT4_IOC_GET_ES_CACHE: 1253bb5835edSTheodore Ts'o return ext4_ioctl_get_es_cache(filp, arg); 1254bb5835edSTheodore Ts'o 1255cb29a02dSEric Biggers case FS_IOC_FSGETXATTR: 12569b7365fcSLi Xi { 12579b7365fcSLi Xi struct fsxattr fa; 12589b7365fcSLi Xi 12597b0e492eSDarrick J. Wong ext4_fill_fsxattr(inode, &fa); 12609b7365fcSLi Xi 12619b7365fcSLi Xi if (copy_to_user((struct fsxattr __user *)arg, 12629b7365fcSLi Xi &fa, sizeof(fa))) 12639b7365fcSLi Xi return -EFAULT; 12649b7365fcSLi Xi return 0; 12659b7365fcSLi Xi } 1266cb29a02dSEric Biggers case FS_IOC_FSSETXATTR: 12679b7365fcSLi Xi { 12687b0e492eSDarrick J. Wong struct fsxattr fa, old_fa; 12699b7365fcSLi Xi int err; 12709b7365fcSLi Xi 12719b7365fcSLi Xi if (copy_from_user(&fa, (struct fsxattr __user *)arg, 12729b7365fcSLi Xi sizeof(fa))) 12739b7365fcSLi Xi return -EFAULT; 12749b7365fcSLi Xi 12759b7365fcSLi Xi /* Make sure caller has proper permission */ 127614f3db55SChristian Brauner if (!inode_owner_or_capable(mnt_userns, inode)) 12779b7365fcSLi Xi return -EACCES; 12789b7365fcSLi Xi 1279d14e7683SJan Kara if (fa.fsx_xflags & ~EXT4_SUPPORTED_FS_XFLAGS) 1280d14e7683SJan Kara return -EOPNOTSUPP; 1281d14e7683SJan Kara 1282d14e7683SJan Kara flags = ext4_xflags_to_iflags(fa.fsx_xflags); 1283d14e7683SJan Kara if (ext4_mask_flags(inode->i_mode, flags) != flags) 1284d14e7683SJan Kara return -EOPNOTSUPP; 1285d14e7683SJan Kara 12869b7365fcSLi Xi err = mnt_want_write_file(filp); 12879b7365fcSLi Xi if (err) 12889b7365fcSLi Xi return err; 12899b7365fcSLi Xi 12905955102cSAl Viro inode_lock(inode); 12917b0e492eSDarrick J. Wong ext4_fill_fsxattr(inode, &old_fa); 12927b0e492eSDarrick J. Wong err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa); 1293dc7ac6c4SWang Shilong if (err) 1294dc7ac6c4SWang Shilong goto out; 12959b7365fcSLi Xi flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) | 12969b7365fcSLi Xi (flags & EXT4_FL_XFLAG_VISIBLE); 12972e538403SDarrick J. Wong err = ext4_ioctl_check_immutable(inode, fa.fsx_projid, flags); 12982e538403SDarrick J. Wong if (err) 12992e538403SDarrick J. Wong goto out; 13009b7365fcSLi Xi err = ext4_ioctl_setflags(inode, flags); 1301dc7ac6c4SWang Shilong if (err) 1302dc7ac6c4SWang Shilong goto out; 1303dc7ac6c4SWang Shilong err = ext4_ioctl_setproject(filp, fa.fsx_projid); 1304dc7ac6c4SWang Shilong out: 13055955102cSAl Viro inode_unlock(inode); 13069b7365fcSLi Xi mnt_drop_write_file(filp); 13079b7365fcSLi Xi return err; 13089b7365fcSLi Xi } 1309e9be2ac7STheodore Ts'o case EXT4_IOC_SHUTDOWN: 1310e9be2ac7STheodore Ts'o return ext4_shutdown(sb, arg); 1311c93d8f88SEric Biggers 1312c93d8f88SEric Biggers case FS_IOC_ENABLE_VERITY: 1313c93d8f88SEric Biggers if (!ext4_has_feature_verity(sb)) 1314c93d8f88SEric Biggers return -EOPNOTSUPP; 1315c93d8f88SEric Biggers return fsverity_ioctl_enable(filp, (const void __user *)arg); 1316c93d8f88SEric Biggers 1317c93d8f88SEric Biggers case FS_IOC_MEASURE_VERITY: 1318c93d8f88SEric Biggers if (!ext4_has_feature_verity(sb)) 1319c93d8f88SEric Biggers return -EOPNOTSUPP; 1320c93d8f88SEric Biggers return fsverity_ioctl_measure(filp, (void __user *)arg); 1321c93d8f88SEric Biggers 1322e17fe657SEric Biggers case FS_IOC_READ_VERITY_METADATA: 1323e17fe657SEric Biggers if (!ext4_has_feature_verity(sb)) 1324e17fe657SEric Biggers return -EOPNOTSUPP; 1325e17fe657SEric Biggers return fsverity_ioctl_read_metadata(filp, 1326e17fe657SEric Biggers (const void __user *)arg); 1327e17fe657SEric Biggers 1328ac27a0ecSDave Kleikamp default: 1329ac27a0ecSDave Kleikamp return -ENOTTY; 1330ac27a0ecSDave Kleikamp } 1331ac27a0ecSDave Kleikamp } 1332ac27a0ecSDave Kleikamp 1333aa75f4d3SHarshad Shirwadkar long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 1334aa75f4d3SHarshad Shirwadkar { 1335aa75f4d3SHarshad Shirwadkar long ret; 1336aa75f4d3SHarshad Shirwadkar 1337aa75f4d3SHarshad Shirwadkar ext4_fc_start_update(file_inode(filp)); 1338aa75f4d3SHarshad Shirwadkar ret = __ext4_ioctl(filp, cmd, arg); 1339aa75f4d3SHarshad Shirwadkar ext4_fc_stop_update(file_inode(filp)); 1340aa75f4d3SHarshad Shirwadkar 1341aa75f4d3SHarshad Shirwadkar return ret; 1342aa75f4d3SHarshad Shirwadkar } 1343aa75f4d3SHarshad Shirwadkar 1344ac27a0ecSDave Kleikamp #ifdef CONFIG_COMPAT 1345617ba13bSMingming Cao long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 1346ac27a0ecSDave Kleikamp { 1347ac27a0ecSDave Kleikamp /* These are just misnamed, they actually get/put from/to user an int */ 1348ac27a0ecSDave Kleikamp switch (cmd) { 1349cb29a02dSEric Biggers case FS_IOC32_GETFLAGS: 1350cb29a02dSEric Biggers cmd = FS_IOC_GETFLAGS; 1351ac27a0ecSDave Kleikamp break; 1352cb29a02dSEric Biggers case FS_IOC32_SETFLAGS: 1353cb29a02dSEric Biggers cmd = FS_IOC_SETFLAGS; 1354ac27a0ecSDave Kleikamp break; 1355617ba13bSMingming Cao case EXT4_IOC32_GETVERSION: 1356617ba13bSMingming Cao cmd = EXT4_IOC_GETVERSION; 1357ac27a0ecSDave Kleikamp break; 1358617ba13bSMingming Cao case EXT4_IOC32_SETVERSION: 1359617ba13bSMingming Cao cmd = EXT4_IOC_SETVERSION; 1360ac27a0ecSDave Kleikamp break; 1361617ba13bSMingming Cao case EXT4_IOC32_GROUP_EXTEND: 1362617ba13bSMingming Cao cmd = EXT4_IOC_GROUP_EXTEND; 1363ac27a0ecSDave Kleikamp break; 1364617ba13bSMingming Cao case EXT4_IOC32_GETVERSION_OLD: 1365617ba13bSMingming Cao cmd = EXT4_IOC_GETVERSION_OLD; 1366ac27a0ecSDave Kleikamp break; 1367617ba13bSMingming Cao case EXT4_IOC32_SETVERSION_OLD: 1368617ba13bSMingming Cao cmd = EXT4_IOC_SETVERSION_OLD; 1369ac27a0ecSDave Kleikamp break; 1370617ba13bSMingming Cao case EXT4_IOC32_GETRSVSZ: 1371617ba13bSMingming Cao cmd = EXT4_IOC_GETRSVSZ; 1372ac27a0ecSDave Kleikamp break; 1373617ba13bSMingming Cao case EXT4_IOC32_SETRSVSZ: 1374617ba13bSMingming Cao cmd = EXT4_IOC_SETRSVSZ; 1375ac27a0ecSDave Kleikamp break; 13764d92dc0fSBen Hutchings case EXT4_IOC32_GROUP_ADD: { 13774d92dc0fSBen Hutchings struct compat_ext4_new_group_input __user *uinput; 1378e145b35bSAl Viro struct ext4_new_group_data input; 13794d92dc0fSBen Hutchings int err; 13804d92dc0fSBen Hutchings 13814d92dc0fSBen Hutchings uinput = compat_ptr(arg); 13824d92dc0fSBen Hutchings err = get_user(input.group, &uinput->group); 13834d92dc0fSBen Hutchings err |= get_user(input.block_bitmap, &uinput->block_bitmap); 13844d92dc0fSBen Hutchings err |= get_user(input.inode_bitmap, &uinput->inode_bitmap); 13854d92dc0fSBen Hutchings err |= get_user(input.inode_table, &uinput->inode_table); 13864d92dc0fSBen Hutchings err |= get_user(input.blocks_count, &uinput->blocks_count); 13874d92dc0fSBen Hutchings err |= get_user(input.reserved_blocks, 13884d92dc0fSBen Hutchings &uinput->reserved_blocks); 13894d92dc0fSBen Hutchings if (err) 13904d92dc0fSBen Hutchings return -EFAULT; 1391e145b35bSAl Viro return ext4_ioctl_group_add(file, &input); 13924d92dc0fSBen Hutchings } 1393b684b2eeSChristian Borntraeger case EXT4_IOC_MOVE_EXT: 139419c5246dSYongqiang Yang case EXT4_IOC_RESIZE_FS: 1395314999dcSArnd Bergmann case FITRIM: 13967869a4a6STheodore Ts'o case EXT4_IOC_PRECACHE_EXTENTS: 1397cb29a02dSEric Biggers case FS_IOC_SET_ENCRYPTION_POLICY: 1398cb29a02dSEric Biggers case FS_IOC_GET_ENCRYPTION_PWSALT: 1399cb29a02dSEric Biggers case FS_IOC_GET_ENCRYPTION_POLICY: 140029b3692eSEric Biggers case FS_IOC_GET_ENCRYPTION_POLICY_EX: 140129b3692eSEric Biggers case FS_IOC_ADD_ENCRYPTION_KEY: 140229b3692eSEric Biggers case FS_IOC_REMOVE_ENCRYPTION_KEY: 140329b3692eSEric Biggers case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: 140429b3692eSEric Biggers case FS_IOC_GET_ENCRYPTION_KEY_STATUS: 14057ec9f3b4SEric Biggers case FS_IOC_GET_ENCRYPTION_NONCE: 1406e9be2ac7STheodore Ts'o case EXT4_IOC_SHUTDOWN: 14070c9ec4beSDarrick J. Wong case FS_IOC_GETFSMAP: 1408c93d8f88SEric Biggers case FS_IOC_ENABLE_VERITY: 1409c93d8f88SEric Biggers case FS_IOC_MEASURE_VERITY: 1410e17fe657SEric Biggers case FS_IOC_READ_VERITY_METADATA: 1411b0c013e2STheodore Ts'o case EXT4_IOC_CLEAR_ES_CACHE: 14121ad3ea6eSTheodore Ts'o case EXT4_IOC_GETSTATE: 1413bb5835edSTheodore Ts'o case EXT4_IOC_GET_ES_CACHE: 1414cb29a02dSEric Biggers case FS_IOC_FSGETXATTR: 1415cb29a02dSEric Biggers case FS_IOC_FSSETXATTR: 1416b684b2eeSChristian Borntraeger break; 1417ac27a0ecSDave Kleikamp default: 1418ac27a0ecSDave Kleikamp return -ENOIOCTLCMD; 1419ac27a0ecSDave Kleikamp } 14205cdd7b2dSAndi Kleen return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); 1421ac27a0ecSDave Kleikamp } 1422ac27a0ecSDave Kleikamp #endif 1423