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; 66393d1d1dSDr. Tilmann Bubeck 67393d1d1dSDr. Tilmann Bubeck ei1 = EXT4_I(inode1); 68393d1d1dSDr. Tilmann Bubeck ei2 = EXT4_I(inode2); 69393d1d1dSDr. Tilmann Bubeck 709c5d58fbSJeff Layton swap(inode1->i_version, inode2->i_version); 719c5d58fbSJeff Layton swap(inode1->i_blocks, inode2->i_blocks); 729c5d58fbSJeff Layton swap(inode1->i_bytes, inode2->i_bytes); 739c5d58fbSJeff Layton swap(inode1->i_atime, inode2->i_atime); 749c5d58fbSJeff Layton swap(inode1->i_mtime, inode2->i_mtime); 75393d1d1dSDr. Tilmann Bubeck 76393d1d1dSDr. Tilmann Bubeck memswap(ei1->i_data, ei2->i_data, sizeof(ei1->i_data)); 779c5d58fbSJeff Layton swap(ei1->i_flags, ei2->i_flags); 789c5d58fbSJeff Layton swap(ei1->i_disksize, ei2->i_disksize); 79cde2d7a7STheodore Ts'o ext4_es_remove_extent(inode1, 0, EXT_MAX_BLOCKS); 80cde2d7a7STheodore Ts'o ext4_es_remove_extent(inode2, 0, EXT_MAX_BLOCKS); 81393d1d1dSDr. Tilmann Bubeck 82393d1d1dSDr. Tilmann Bubeck isize = i_size_read(inode1); 83393d1d1dSDr. Tilmann Bubeck i_size_write(inode1, i_size_read(inode2)); 84393d1d1dSDr. Tilmann Bubeck i_size_write(inode2, isize); 85393d1d1dSDr. Tilmann Bubeck } 86393d1d1dSDr. Tilmann Bubeck 8718aded17STheodore Ts'o static void reset_inode_seed(struct inode *inode) 8818aded17STheodore Ts'o { 8918aded17STheodore Ts'o struct ext4_inode_info *ei = EXT4_I(inode); 9018aded17STheodore Ts'o struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); 9118aded17STheodore Ts'o __le32 inum = cpu_to_le32(inode->i_ino); 9218aded17STheodore Ts'o __le32 gen = cpu_to_le32(inode->i_generation); 9318aded17STheodore Ts'o __u32 csum; 9418aded17STheodore Ts'o 9518aded17STheodore Ts'o if (!ext4_has_metadata_csum(inode->i_sb)) 9618aded17STheodore Ts'o return; 9718aded17STheodore Ts'o 9818aded17STheodore Ts'o csum = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)&inum, sizeof(inum)); 9918aded17STheodore Ts'o ei->i_csum_seed = ext4_chksum(sbi, csum, (__u8 *)&gen, sizeof(gen)); 10018aded17STheodore Ts'o } 10118aded17STheodore Ts'o 102393d1d1dSDr. Tilmann Bubeck /** 103393d1d1dSDr. Tilmann Bubeck * Swap the information from the given @inode and the inode 104393d1d1dSDr. Tilmann Bubeck * EXT4_BOOT_LOADER_INO. It will basically swap i_data and all other 105393d1d1dSDr. Tilmann Bubeck * important fields of the inodes. 106393d1d1dSDr. Tilmann Bubeck * 107393d1d1dSDr. Tilmann Bubeck * @sb: the super block of the filesystem 108393d1d1dSDr. Tilmann Bubeck * @inode: the inode to swap with EXT4_BOOT_LOADER_INO 109393d1d1dSDr. Tilmann Bubeck * 110393d1d1dSDr. Tilmann Bubeck */ 111393d1d1dSDr. Tilmann Bubeck static long swap_inode_boot_loader(struct super_block *sb, 112393d1d1dSDr. Tilmann Bubeck struct inode *inode) 113393d1d1dSDr. Tilmann Bubeck { 114393d1d1dSDr. Tilmann Bubeck handle_t *handle; 115393d1d1dSDr. Tilmann Bubeck int err; 116393d1d1dSDr. Tilmann Bubeck struct inode *inode_bl; 117393d1d1dSDr. Tilmann Bubeck struct ext4_inode_info *ei_bl; 118393d1d1dSDr. Tilmann Bubeck 1198a363970STheodore Ts'o inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO, EXT4_IGET_SPECIAL); 120d8558a29STheodore Ts'o if (IS_ERR(inode_bl)) 121d8558a29STheodore Ts'o return PTR_ERR(inode_bl); 122393d1d1dSDr. Tilmann Bubeck ei_bl = EXT4_I(inode_bl); 123393d1d1dSDr. Tilmann Bubeck 124393d1d1dSDr. Tilmann Bubeck /* Protect orig inodes against a truncate and make sure, 125393d1d1dSDr. Tilmann Bubeck * that only 1 swap_inode_boot_loader is running. */ 126375e289eSJ. Bruce Fields lock_two_nondirectories(inode, inode_bl); 127393d1d1dSDr. Tilmann Bubeck 12867a11611Syangerkun if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode) || 12967a11611Syangerkun IS_SWAPFILE(inode) || IS_ENCRYPTED(inode) || 13067a11611Syangerkun ext4_has_inline_data(inode)) { 13167a11611Syangerkun err = -EINVAL; 13267a11611Syangerkun goto journal_err_out; 13367a11611Syangerkun } 13467a11611Syangerkun 13567a11611Syangerkun if (IS_RDONLY(inode) || IS_APPEND(inode) || IS_IMMUTABLE(inode) || 13667a11611Syangerkun !inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN)) { 13767a11611Syangerkun err = -EPERM; 13867a11611Syangerkun goto journal_err_out; 13967a11611Syangerkun } 14067a11611Syangerkun 141a46c68a3Syangerkun down_write(&EXT4_I(inode)->i_mmap_sem); 142a46c68a3Syangerkun err = filemap_write_and_wait(inode->i_mapping); 143a46c68a3Syangerkun if (err) 144a46c68a3Syangerkun goto err_out; 145a46c68a3Syangerkun 146a46c68a3Syangerkun err = filemap_write_and_wait(inode_bl->i_mapping); 147a46c68a3Syangerkun if (err) 148a46c68a3Syangerkun goto err_out; 149a46c68a3Syangerkun 150393d1d1dSDr. Tilmann Bubeck /* Wait for all existing dio workers */ 151393d1d1dSDr. Tilmann Bubeck inode_dio_wait(inode); 152393d1d1dSDr. Tilmann Bubeck inode_dio_wait(inode_bl); 153393d1d1dSDr. Tilmann Bubeck 15418aded17STheodore Ts'o truncate_inode_pages(&inode->i_data, 0); 15518aded17STheodore Ts'o truncate_inode_pages(&inode_bl->i_data, 0); 15618aded17STheodore Ts'o 157393d1d1dSDr. Tilmann Bubeck handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2); 158393d1d1dSDr. Tilmann Bubeck if (IS_ERR(handle)) { 159393d1d1dSDr. Tilmann Bubeck err = -EINVAL; 160a46c68a3Syangerkun goto err_out; 161393d1d1dSDr. Tilmann Bubeck } 162393d1d1dSDr. Tilmann Bubeck 163393d1d1dSDr. Tilmann Bubeck /* Protect extent tree against block allocations via delalloc */ 164393d1d1dSDr. Tilmann Bubeck ext4_double_down_write_data_sem(inode, inode_bl); 165393d1d1dSDr. Tilmann Bubeck 166393d1d1dSDr. Tilmann Bubeck if (inode_bl->i_nlink == 0) { 167393d1d1dSDr. Tilmann Bubeck /* this inode has never been used as a BOOT_LOADER */ 168393d1d1dSDr. Tilmann Bubeck set_nlink(inode_bl, 1); 169393d1d1dSDr. Tilmann Bubeck i_uid_write(inode_bl, 0); 170393d1d1dSDr. Tilmann Bubeck i_gid_write(inode_bl, 0); 171393d1d1dSDr. Tilmann Bubeck inode_bl->i_flags = 0; 172393d1d1dSDr. Tilmann Bubeck ei_bl->i_flags = 0; 173ee73f9a5SJeff Layton inode_set_iversion(inode_bl, 1); 174393d1d1dSDr. Tilmann Bubeck i_size_write(inode_bl, 0); 175393d1d1dSDr. Tilmann Bubeck inode_bl->i_mode = S_IFREG; 176e2b911c5SDarrick J. Wong if (ext4_has_feature_extents(sb)) { 177393d1d1dSDr. Tilmann Bubeck ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS); 178393d1d1dSDr. Tilmann Bubeck ext4_ext_tree_init(handle, inode_bl); 179393d1d1dSDr. Tilmann Bubeck } else 180393d1d1dSDr. Tilmann Bubeck memset(ei_bl->i_data, 0, sizeof(ei_bl->i_data)); 181393d1d1dSDr. Tilmann Bubeck } 182393d1d1dSDr. Tilmann Bubeck 183393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 184393d1d1dSDr. Tilmann Bubeck 185eeca7ea1SDeepa Dinamani inode->i_ctime = inode_bl->i_ctime = current_time(inode); 186393d1d1dSDr. Tilmann Bubeck 18723253068STheodore Ts'o inode->i_generation = prandom_u32(); 18823253068STheodore Ts'o inode_bl->i_generation = prandom_u32(); 18918aded17STheodore Ts'o reset_inode_seed(inode); 19018aded17STheodore Ts'o reset_inode_seed(inode_bl); 191393d1d1dSDr. Tilmann Bubeck 192393d1d1dSDr. Tilmann Bubeck ext4_discard_preallocations(inode); 193393d1d1dSDr. Tilmann Bubeck 194393d1d1dSDr. Tilmann Bubeck err = ext4_mark_inode_dirty(handle, inode); 195393d1d1dSDr. Tilmann Bubeck if (err < 0) { 196393d1d1dSDr. Tilmann Bubeck ext4_warning(inode->i_sb, 197393d1d1dSDr. Tilmann Bubeck "couldn't mark inode #%lu dirty (err %d)", 198393d1d1dSDr. Tilmann Bubeck inode->i_ino, err); 199393d1d1dSDr. Tilmann Bubeck /* Revert all changes: */ 200393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 20118aded17STheodore Ts'o ext4_mark_inode_dirty(handle, inode); 202393d1d1dSDr. Tilmann Bubeck } else { 203393d1d1dSDr. Tilmann Bubeck err = ext4_mark_inode_dirty(handle, inode_bl); 204393d1d1dSDr. Tilmann Bubeck if (err < 0) { 205393d1d1dSDr. Tilmann Bubeck ext4_warning(inode_bl->i_sb, 206393d1d1dSDr. Tilmann Bubeck "couldn't mark inode #%lu dirty (err %d)", 207393d1d1dSDr. Tilmann Bubeck inode_bl->i_ino, err); 208393d1d1dSDr. Tilmann Bubeck /* Revert all changes: */ 209393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 210393d1d1dSDr. Tilmann Bubeck ext4_mark_inode_dirty(handle, inode); 21118aded17STheodore Ts'o ext4_mark_inode_dirty(handle, inode_bl); 212393d1d1dSDr. Tilmann Bubeck } 213393d1d1dSDr. Tilmann Bubeck } 214393d1d1dSDr. Tilmann Bubeck ext4_journal_stop(handle); 215393d1d1dSDr. Tilmann Bubeck ext4_double_up_write_data_sem(inode, inode_bl); 216393d1d1dSDr. Tilmann Bubeck 217a46c68a3Syangerkun err_out: 218a46c68a3Syangerkun up_write(&EXT4_I(inode)->i_mmap_sem); 21930d29b11SZheng Liu journal_err_out: 220375e289eSJ. Bruce Fields unlock_two_nondirectories(inode, inode_bl); 221393d1d1dSDr. Tilmann Bubeck iput(inode_bl); 222393d1d1dSDr. Tilmann Bubeck return err; 223393d1d1dSDr. Tilmann Bubeck } 224393d1d1dSDr. Tilmann Bubeck 225ba679017SEric Biggers #ifdef CONFIG_EXT4_FS_ENCRYPTION 2269bd8212fSMichael Halcrow static int uuid_is_zero(__u8 u[16]) 2279bd8212fSMichael Halcrow { 2289bd8212fSMichael Halcrow int i; 2299bd8212fSMichael Halcrow 2309bd8212fSMichael Halcrow for (i = 0; i < 16; i++) 2319bd8212fSMichael Halcrow if (u[i]) 2329bd8212fSMichael Halcrow return 0; 2339bd8212fSMichael Halcrow return 1; 2349bd8212fSMichael Halcrow } 235ba679017SEric Biggers #endif 2369bd8212fSMichael Halcrow 2379b7365fcSLi Xi static int ext4_ioctl_setflags(struct inode *inode, 2389b7365fcSLi Xi unsigned int flags) 239ac27a0ecSDave Kleikamp { 240617ba13bSMingming Cao struct ext4_inode_info *ei = EXT4_I(inode); 241ac27a0ecSDave Kleikamp handle_t *handle = NULL; 242fdde368eSAnton Protopopov int err = -EPERM, migrate = 0; 243617ba13bSMingming Cao struct ext4_iloc iloc; 24479906964STheodore Ts'o unsigned int oldflags, mask, i; 245ac27a0ecSDave Kleikamp unsigned int jflag; 246ac27a0ecSDave Kleikamp 247e47776a0SJan Kara /* Is it quota file? Do not allow user to mess with it */ 24802749a4cSTahsin Erdogan if (ext4_is_quota_file(inode)) 24942a74f20SDave Hansen goto flags_out; 25042a74f20SDave Hansen 251ac27a0ecSDave Kleikamp oldflags = ei->i_flags; 252ac27a0ecSDave Kleikamp 253ac27a0ecSDave Kleikamp /* The JOURNAL_DATA flag is modifiable only by root */ 254617ba13bSMingming Cao jflag = flags & EXT4_JOURNAL_DATA_FL; 255ac27a0ecSDave Kleikamp 256ac27a0ecSDave Kleikamp /* 257ac27a0ecSDave Kleikamp * The IMMUTABLE and APPEND_ONLY flags can only be changed by 258ac27a0ecSDave Kleikamp * the relevant capability. 259ac27a0ecSDave Kleikamp * 260ac27a0ecSDave Kleikamp * This test looks nicer. Thanks to Pauline Middelink 261ac27a0ecSDave Kleikamp */ 262617ba13bSMingming Cao if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) { 26342a74f20SDave Hansen if (!capable(CAP_LINUX_IMMUTABLE)) 26442a74f20SDave Hansen goto flags_out; 265ac27a0ecSDave Kleikamp } 266ac27a0ecSDave Kleikamp 267ac27a0ecSDave Kleikamp /* 268ac27a0ecSDave Kleikamp * The JOURNAL_DATA flag can only be changed by 269ac27a0ecSDave Kleikamp * the relevant capability. 270ac27a0ecSDave Kleikamp */ 271617ba13bSMingming Cao if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { 27242a74f20SDave Hansen if (!capable(CAP_SYS_RESOURCE)) 27342a74f20SDave Hansen goto flags_out; 274ac27a0ecSDave Kleikamp } 275996bb9fdSTheodore Ts'o if ((flags ^ oldflags) & EXT4_EXTENTS_FL) 2764db46fc2SAneesh Kumar K.V migrate = 1; 277ac27a0ecSDave Kleikamp 278c8d46e41SJiaying Zhang if (flags & EXT4_EOFBLOCKS_FL) { 279c8d46e41SJiaying Zhang /* we don't support adding EOFBLOCKS flag */ 280c8d46e41SJiaying Zhang if (!(oldflags & EXT4_EOFBLOCKS_FL)) { 281c8d46e41SJiaying Zhang err = -EOPNOTSUPP; 282c8d46e41SJiaying Zhang goto flags_out; 283c8d46e41SJiaying Zhang } 2842c98eb5eSTheodore Ts'o } else if (oldflags & EXT4_EOFBLOCKS_FL) { 2852c98eb5eSTheodore Ts'o err = ext4_truncate(inode); 2862c98eb5eSTheodore Ts'o if (err) 2872c98eb5eSTheodore Ts'o goto flags_out; 2882c98eb5eSTheodore Ts'o } 289c8d46e41SJiaying Zhang 2909924a92aSTheodore Ts'o handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 291ac27a0ecSDave Kleikamp if (IS_ERR(handle)) { 29242a74f20SDave Hansen err = PTR_ERR(handle); 29342a74f20SDave Hansen goto flags_out; 294ac27a0ecSDave Kleikamp } 295ac27a0ecSDave Kleikamp if (IS_SYNC(inode)) 2960390131bSFrank Mayhar ext4_handle_sync(handle); 297617ba13bSMingming Cao err = ext4_reserve_inode_write(handle, inode, &iloc); 298ac27a0ecSDave Kleikamp if (err) 299ac27a0ecSDave Kleikamp goto flags_err; 300ac27a0ecSDave Kleikamp 30179906964STheodore Ts'o for (i = 0, mask = 1; i < 32; i++, mask <<= 1) { 30279906964STheodore Ts'o if (!(mask & EXT4_FL_USER_MODIFIABLE)) 30379906964STheodore Ts'o continue; 304f8011d93SJan Kara /* These flags get special treatment later */ 305f8011d93SJan Kara if (mask == EXT4_JOURNAL_DATA_FL || mask == EXT4_EXTENTS_FL) 306f8011d93SJan Kara continue; 30779906964STheodore Ts'o if (mask & flags) 30879906964STheodore Ts'o ext4_set_inode_flag(inode, i); 30979906964STheodore Ts'o else 31079906964STheodore Ts'o ext4_clear_inode_flag(inode, i); 31179906964STheodore Ts'o } 312ac27a0ecSDave Kleikamp 313617ba13bSMingming Cao ext4_set_inode_flags(inode); 314eeca7ea1SDeepa Dinamani inode->i_ctime = current_time(inode); 315ac27a0ecSDave Kleikamp 316617ba13bSMingming Cao err = ext4_mark_iloc_dirty(handle, inode, &iloc); 317ac27a0ecSDave Kleikamp flags_err: 318617ba13bSMingming Cao ext4_journal_stop(handle); 31942a74f20SDave Hansen if (err) 32042a74f20SDave Hansen goto flags_out; 321ac27a0ecSDave Kleikamp 322e9072d85SRoss Zwisler if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { 323e9072d85SRoss Zwisler /* 324e9072d85SRoss Zwisler * Changes to the journaling mode can cause unsafe changes to 325e9072d85SRoss Zwisler * S_DAX if we are using the DAX mount option. 326e9072d85SRoss Zwisler */ 327e9072d85SRoss Zwisler if (test_opt(inode->i_sb, DAX)) { 328e9072d85SRoss Zwisler err = -EBUSY; 329e9072d85SRoss Zwisler goto flags_out; 330e9072d85SRoss Zwisler } 331e9072d85SRoss Zwisler 332617ba13bSMingming Cao err = ext4_change_inode_journal_flag(inode, jflag); 3334db46fc2SAneesh Kumar K.V if (err) 3344db46fc2SAneesh Kumar K.V goto flags_out; 335e9072d85SRoss Zwisler } 336996bb9fdSTheodore Ts'o if (migrate) { 337996bb9fdSTheodore Ts'o if (flags & EXT4_EXTENTS_FL) 3384db46fc2SAneesh Kumar K.V err = ext4_ext_migrate(inode); 339996bb9fdSTheodore Ts'o else 340996bb9fdSTheodore Ts'o err = ext4_ind_migrate(inode); 341996bb9fdSTheodore Ts'o } 342996bb9fdSTheodore Ts'o 34342a74f20SDave Hansen flags_out: 3449b7365fcSLi Xi return err; 3459b7365fcSLi Xi } 3469b7365fcSLi Xi 3479b7365fcSLi Xi #ifdef CONFIG_QUOTA 3489b7365fcSLi Xi static int ext4_ioctl_setproject(struct file *filp, __u32 projid) 3499b7365fcSLi Xi { 3509b7365fcSLi Xi struct inode *inode = file_inode(filp); 3519b7365fcSLi Xi struct super_block *sb = inode->i_sb; 3529b7365fcSLi Xi struct ext4_inode_info *ei = EXT4_I(inode); 3539b7365fcSLi Xi int err, rc; 3549b7365fcSLi Xi handle_t *handle; 3559b7365fcSLi Xi kprojid_t kprojid; 3569b7365fcSLi Xi struct ext4_iloc iloc; 3579b7365fcSLi Xi struct ext4_inode *raw_inode; 358079788d0SWang Shilong struct dquot *transfer_to[MAXQUOTAS] = { }; 3599b7365fcSLi Xi 3600b7b7779SKaho Ng if (!ext4_has_feature_project(sb)) { 3619b7365fcSLi Xi if (projid != EXT4_DEF_PROJID) 3629b7365fcSLi Xi return -EOPNOTSUPP; 3639b7365fcSLi Xi else 3649b7365fcSLi Xi return 0; 3659b7365fcSLi Xi } 3669b7365fcSLi Xi 3679b7365fcSLi Xi if (EXT4_INODE_SIZE(sb) <= EXT4_GOOD_OLD_INODE_SIZE) 3689b7365fcSLi Xi return -EOPNOTSUPP; 3699b7365fcSLi Xi 3709b7365fcSLi Xi kprojid = make_kprojid(&init_user_ns, (projid_t)projid); 3719b7365fcSLi Xi 3729b7365fcSLi Xi if (projid_eq(kprojid, EXT4_I(inode)->i_projid)) 3739b7365fcSLi Xi return 0; 3749b7365fcSLi Xi 3759b7365fcSLi Xi err = -EPERM; 3769b7365fcSLi Xi /* Is it quota file? Do not allow user to mess with it */ 37702749a4cSTahsin Erdogan if (ext4_is_quota_file(inode)) 378dc7ac6c4SWang Shilong return err; 3799b7365fcSLi Xi 3809b7365fcSLi Xi err = ext4_get_inode_loc(inode, &iloc); 3819b7365fcSLi Xi if (err) 382dc7ac6c4SWang Shilong return err; 3839b7365fcSLi Xi 3849b7365fcSLi Xi raw_inode = ext4_raw_inode(&iloc); 3859b7365fcSLi Xi if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) { 386c03b45b8SMiao Xie err = ext4_expand_extra_isize(inode, 387c03b45b8SMiao Xie EXT4_SB(sb)->s_want_extra_isize, 388c03b45b8SMiao Xie &iloc); 389c03b45b8SMiao Xie if (err) 390dc7ac6c4SWang Shilong return err; 391c03b45b8SMiao Xie } else { 3929b7365fcSLi Xi brelse(iloc.bh); 393c03b45b8SMiao Xie } 3949b7365fcSLi Xi 395182a79e0SWang Shilong err = dquot_initialize(inode); 396182a79e0SWang Shilong if (err) 397182a79e0SWang Shilong return err; 3989b7365fcSLi Xi 3999b7365fcSLi Xi handle = ext4_journal_start(inode, EXT4_HT_QUOTA, 4009b7365fcSLi Xi EXT4_QUOTA_INIT_BLOCKS(sb) + 4019b7365fcSLi Xi EXT4_QUOTA_DEL_BLOCKS(sb) + 3); 402dc7ac6c4SWang Shilong if (IS_ERR(handle)) 403dc7ac6c4SWang Shilong return PTR_ERR(handle); 4049b7365fcSLi Xi 4059b7365fcSLi Xi err = ext4_reserve_inode_write(handle, inode, &iloc); 4069b7365fcSLi Xi if (err) 4079b7365fcSLi Xi goto out_stop; 4089b7365fcSLi Xi 4099b7365fcSLi Xi transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); 410ff0bc084SSeth Forshee if (!IS_ERR(transfer_to[PRJQUOTA])) { 4117a9ca53aSTahsin Erdogan 4127a9ca53aSTahsin Erdogan /* __dquot_transfer() calls back ext4_get_inode_usage() which 4137a9ca53aSTahsin Erdogan * counts xattr inode references. 4147a9ca53aSTahsin Erdogan */ 4157a9ca53aSTahsin Erdogan down_read(&EXT4_I(inode)->xattr_sem); 4169b7365fcSLi Xi err = __dquot_transfer(inode, transfer_to); 4177a9ca53aSTahsin Erdogan up_read(&EXT4_I(inode)->xattr_sem); 4189b7365fcSLi Xi dqput(transfer_to[PRJQUOTA]); 4199b7365fcSLi Xi if (err) 4209b7365fcSLi Xi goto out_dirty; 4219b7365fcSLi Xi } 422079788d0SWang Shilong 4239b7365fcSLi Xi EXT4_I(inode)->i_projid = kprojid; 424eeca7ea1SDeepa Dinamani inode->i_ctime = current_time(inode); 4259b7365fcSLi Xi out_dirty: 4269b7365fcSLi Xi rc = ext4_mark_iloc_dirty(handle, inode, &iloc); 4279b7365fcSLi Xi if (!err) 4289b7365fcSLi Xi err = rc; 4299b7365fcSLi Xi out_stop: 4309b7365fcSLi Xi ext4_journal_stop(handle); 4319b7365fcSLi Xi return err; 4329b7365fcSLi Xi } 4339b7365fcSLi Xi #else 4349b7365fcSLi Xi static int ext4_ioctl_setproject(struct file *filp, __u32 projid) 4359b7365fcSLi Xi { 4369b7365fcSLi Xi if (projid != EXT4_DEF_PROJID) 4379b7365fcSLi Xi return -EOPNOTSUPP; 4389b7365fcSLi Xi return 0; 4399b7365fcSLi Xi } 4409b7365fcSLi Xi #endif 4419b7365fcSLi Xi 4429b7365fcSLi Xi /* Transfer internal flags to xflags */ 4439b7365fcSLi Xi static inline __u32 ext4_iflags_to_xflags(unsigned long iflags) 4449b7365fcSLi Xi { 4459b7365fcSLi Xi __u32 xflags = 0; 4469b7365fcSLi Xi 4479b7365fcSLi Xi if (iflags & EXT4_SYNC_FL) 4489b7365fcSLi Xi xflags |= FS_XFLAG_SYNC; 4499b7365fcSLi Xi if (iflags & EXT4_IMMUTABLE_FL) 4509b7365fcSLi Xi xflags |= FS_XFLAG_IMMUTABLE; 4519b7365fcSLi Xi if (iflags & EXT4_APPEND_FL) 4529b7365fcSLi Xi xflags |= FS_XFLAG_APPEND; 4539b7365fcSLi Xi if (iflags & EXT4_NODUMP_FL) 4549b7365fcSLi Xi xflags |= FS_XFLAG_NODUMP; 4559b7365fcSLi Xi if (iflags & EXT4_NOATIME_FL) 4569b7365fcSLi Xi xflags |= FS_XFLAG_NOATIME; 4579b7365fcSLi Xi if (iflags & EXT4_PROJINHERIT_FL) 4589b7365fcSLi Xi xflags |= FS_XFLAG_PROJINHERIT; 4599b7365fcSLi Xi return xflags; 4609b7365fcSLi Xi } 4619b7365fcSLi Xi 462d14e7683SJan Kara #define EXT4_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \ 463d14e7683SJan Kara FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \ 464d14e7683SJan Kara FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT) 465d14e7683SJan Kara 4669b7365fcSLi Xi /* Transfer xflags flags to internal */ 4679b7365fcSLi Xi static inline unsigned long ext4_xflags_to_iflags(__u32 xflags) 4689b7365fcSLi Xi { 4699b7365fcSLi Xi unsigned long iflags = 0; 4709b7365fcSLi Xi 4719b7365fcSLi Xi if (xflags & FS_XFLAG_SYNC) 4729b7365fcSLi Xi iflags |= EXT4_SYNC_FL; 4739b7365fcSLi Xi if (xflags & FS_XFLAG_IMMUTABLE) 4749b7365fcSLi Xi iflags |= EXT4_IMMUTABLE_FL; 4759b7365fcSLi Xi if (xflags & FS_XFLAG_APPEND) 4769b7365fcSLi Xi iflags |= EXT4_APPEND_FL; 4779b7365fcSLi Xi if (xflags & FS_XFLAG_NODUMP) 4789b7365fcSLi Xi iflags |= EXT4_NODUMP_FL; 4799b7365fcSLi Xi if (xflags & FS_XFLAG_NOATIME) 4809b7365fcSLi Xi iflags |= EXT4_NOATIME_FL; 4819b7365fcSLi Xi if (xflags & FS_XFLAG_PROJINHERIT) 4829b7365fcSLi Xi iflags |= EXT4_PROJINHERIT_FL; 4839b7365fcSLi Xi 4849b7365fcSLi Xi return iflags; 4859b7365fcSLi Xi } 4869b7365fcSLi Xi 4871a20a630SEric Biggers static int ext4_shutdown(struct super_block *sb, unsigned long arg) 488783d9485STheodore Ts'o { 489783d9485STheodore Ts'o struct ext4_sb_info *sbi = EXT4_SB(sb); 490783d9485STheodore Ts'o __u32 flags; 491783d9485STheodore Ts'o 492783d9485STheodore Ts'o if (!capable(CAP_SYS_ADMIN)) 493783d9485STheodore Ts'o return -EPERM; 494783d9485STheodore Ts'o 495783d9485STheodore Ts'o if (get_user(flags, (__u32 __user *)arg)) 496783d9485STheodore Ts'o return -EFAULT; 497783d9485STheodore Ts'o 498783d9485STheodore Ts'o if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH) 499783d9485STheodore Ts'o return -EINVAL; 500783d9485STheodore Ts'o 501783d9485STheodore Ts'o if (ext4_forced_shutdown(sbi)) 502783d9485STheodore Ts'o return 0; 503783d9485STheodore Ts'o 504783d9485STheodore Ts'o ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags); 505ccf0f32aSTheodore Ts'o trace_ext4_shutdown(sb, flags); 506783d9485STheodore Ts'o 507783d9485STheodore Ts'o switch (flags) { 508783d9485STheodore Ts'o case EXT4_GOING_FLAGS_DEFAULT: 509783d9485STheodore Ts'o freeze_bdev(sb->s_bdev); 510783d9485STheodore Ts'o set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 511783d9485STheodore Ts'o thaw_bdev(sb->s_bdev, sb); 512783d9485STheodore Ts'o break; 513783d9485STheodore Ts'o case EXT4_GOING_FLAGS_LOGFLUSH: 514783d9485STheodore Ts'o set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 515783d9485STheodore Ts'o if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { 516783d9485STheodore Ts'o (void) ext4_force_commit(sb); 517fb7c0244STheodore Ts'o jbd2_journal_abort(sbi->s_journal, -ESHUTDOWN); 518783d9485STheodore Ts'o } 519783d9485STheodore Ts'o break; 520783d9485STheodore Ts'o case EXT4_GOING_FLAGS_NOLOGFLUSH: 521783d9485STheodore Ts'o set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 522a6d9946bSTheodore Ts'o if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) 523fb7c0244STheodore Ts'o jbd2_journal_abort(sbi->s_journal, -ESHUTDOWN); 524783d9485STheodore Ts'o break; 525783d9485STheodore Ts'o default: 526783d9485STheodore Ts'o return -EINVAL; 527783d9485STheodore Ts'o } 528783d9485STheodore Ts'o clear_opt(sb, DISCARD); 529783d9485STheodore Ts'o return 0; 530783d9485STheodore Ts'o } 531783d9485STheodore Ts'o 5320c9ec4beSDarrick J. Wong struct getfsmap_info { 5330c9ec4beSDarrick J. Wong struct super_block *gi_sb; 5340c9ec4beSDarrick J. Wong struct fsmap_head __user *gi_data; 5350c9ec4beSDarrick J. Wong unsigned int gi_idx; 5360c9ec4beSDarrick J. Wong __u32 gi_last_flags; 5370c9ec4beSDarrick J. Wong }; 5380c9ec4beSDarrick J. Wong 5390c9ec4beSDarrick J. Wong static int ext4_getfsmap_format(struct ext4_fsmap *xfm, void *priv) 5400c9ec4beSDarrick J. Wong { 5410c9ec4beSDarrick J. Wong struct getfsmap_info *info = priv; 5420c9ec4beSDarrick J. Wong struct fsmap fm; 5430c9ec4beSDarrick J. Wong 5440c9ec4beSDarrick J. Wong trace_ext4_getfsmap_mapping(info->gi_sb, xfm); 5450c9ec4beSDarrick J. Wong 5460c9ec4beSDarrick J. Wong info->gi_last_flags = xfm->fmr_flags; 5470c9ec4beSDarrick J. Wong ext4_fsmap_from_internal(info->gi_sb, &fm, xfm); 5480c9ec4beSDarrick J. Wong if (copy_to_user(&info->gi_data->fmh_recs[info->gi_idx++], &fm, 5490c9ec4beSDarrick J. Wong sizeof(struct fsmap))) 5500c9ec4beSDarrick J. Wong return -EFAULT; 5510c9ec4beSDarrick J. Wong 5520c9ec4beSDarrick J. Wong return 0; 5530c9ec4beSDarrick J. Wong } 5540c9ec4beSDarrick J. Wong 5550c9ec4beSDarrick J. Wong static int ext4_ioc_getfsmap(struct super_block *sb, 5560c9ec4beSDarrick J. Wong struct fsmap_head __user *arg) 5570c9ec4beSDarrick J. Wong { 5580c9ec4beSDarrick J. Wong struct getfsmap_info info = {0}; 5590c9ec4beSDarrick J. Wong struct ext4_fsmap_head xhead = {0}; 5600c9ec4beSDarrick J. Wong struct fsmap_head head; 5610c9ec4beSDarrick J. Wong bool aborted = false; 5620c9ec4beSDarrick J. Wong int error; 5630c9ec4beSDarrick J. Wong 5640c9ec4beSDarrick J. Wong if (copy_from_user(&head, arg, sizeof(struct fsmap_head))) 5650c9ec4beSDarrick J. Wong return -EFAULT; 5660c9ec4beSDarrick J. Wong if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) || 5670c9ec4beSDarrick J. Wong memchr_inv(head.fmh_keys[0].fmr_reserved, 0, 5680c9ec4beSDarrick J. Wong sizeof(head.fmh_keys[0].fmr_reserved)) || 5690c9ec4beSDarrick J. Wong memchr_inv(head.fmh_keys[1].fmr_reserved, 0, 5700c9ec4beSDarrick J. Wong sizeof(head.fmh_keys[1].fmr_reserved))) 5710c9ec4beSDarrick J. Wong return -EINVAL; 5720c9ec4beSDarrick J. Wong /* 5730c9ec4beSDarrick J. Wong * ext4 doesn't report file extents at all, so the only valid 5740c9ec4beSDarrick J. Wong * file offsets are the magic ones (all zeroes or all ones). 5750c9ec4beSDarrick J. Wong */ 5760c9ec4beSDarrick J. Wong if (head.fmh_keys[0].fmr_offset || 5770c9ec4beSDarrick J. Wong (head.fmh_keys[1].fmr_offset != 0 && 5780c9ec4beSDarrick J. Wong head.fmh_keys[1].fmr_offset != -1ULL)) 5790c9ec4beSDarrick J. Wong return -EINVAL; 5800c9ec4beSDarrick J. Wong 5810c9ec4beSDarrick J. Wong xhead.fmh_iflags = head.fmh_iflags; 5820c9ec4beSDarrick J. Wong xhead.fmh_count = head.fmh_count; 5830c9ec4beSDarrick J. Wong ext4_fsmap_to_internal(sb, &xhead.fmh_keys[0], &head.fmh_keys[0]); 5840c9ec4beSDarrick J. Wong ext4_fsmap_to_internal(sb, &xhead.fmh_keys[1], &head.fmh_keys[1]); 5850c9ec4beSDarrick J. Wong 5860c9ec4beSDarrick J. Wong trace_ext4_getfsmap_low_key(sb, &xhead.fmh_keys[0]); 5870c9ec4beSDarrick J. Wong trace_ext4_getfsmap_high_key(sb, &xhead.fmh_keys[1]); 5880c9ec4beSDarrick J. Wong 5890c9ec4beSDarrick J. Wong info.gi_sb = sb; 5900c9ec4beSDarrick J. Wong info.gi_data = arg; 5910c9ec4beSDarrick J. Wong error = ext4_getfsmap(sb, &xhead, ext4_getfsmap_format, &info); 5920c9ec4beSDarrick J. Wong if (error == EXT4_QUERY_RANGE_ABORT) { 5930c9ec4beSDarrick J. Wong error = 0; 5940c9ec4beSDarrick J. Wong aborted = true; 5950c9ec4beSDarrick J. Wong } else if (error) 5960c9ec4beSDarrick J. Wong return error; 5970c9ec4beSDarrick J. Wong 5980c9ec4beSDarrick J. Wong /* If we didn't abort, set the "last" flag in the last fmx */ 5990c9ec4beSDarrick J. Wong if (!aborted && info.gi_idx) { 6000c9ec4beSDarrick J. Wong info.gi_last_flags |= FMR_OF_LAST; 6010c9ec4beSDarrick J. Wong if (copy_to_user(&info.gi_data->fmh_recs[info.gi_idx - 1].fmr_flags, 6020c9ec4beSDarrick J. Wong &info.gi_last_flags, 6030c9ec4beSDarrick J. Wong sizeof(info.gi_last_flags))) 6040c9ec4beSDarrick J. Wong return -EFAULT; 6050c9ec4beSDarrick J. Wong } 6060c9ec4beSDarrick J. Wong 6070c9ec4beSDarrick J. Wong /* copy back header */ 6080c9ec4beSDarrick J. Wong head.fmh_entries = xhead.fmh_entries; 6090c9ec4beSDarrick J. Wong head.fmh_oflags = xhead.fmh_oflags; 6100c9ec4beSDarrick J. Wong if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) 6110c9ec4beSDarrick J. Wong return -EFAULT; 6120c9ec4beSDarrick J. Wong 6130c9ec4beSDarrick J. Wong return 0; 6140c9ec4beSDarrick J. Wong } 6150c9ec4beSDarrick J. Wong 616e145b35bSAl Viro static long ext4_ioctl_group_add(struct file *file, 617e145b35bSAl Viro struct ext4_new_group_data *input) 618e145b35bSAl Viro { 619e145b35bSAl Viro struct super_block *sb = file_inode(file)->i_sb; 620e145b35bSAl Viro int err, err2=0; 621e145b35bSAl Viro 622e145b35bSAl Viro err = ext4_resize_begin(sb); 623e145b35bSAl Viro if (err) 624e145b35bSAl Viro return err; 625e145b35bSAl Viro 626e145b35bSAl Viro if (ext4_has_feature_bigalloc(sb)) { 627e145b35bSAl Viro ext4_msg(sb, KERN_ERR, 628e145b35bSAl Viro "Online resizing not supported with bigalloc"); 629e145b35bSAl Viro err = -EOPNOTSUPP; 630e145b35bSAl Viro goto group_add_out; 631e145b35bSAl Viro } 632e145b35bSAl Viro 633e145b35bSAl Viro err = mnt_want_write_file(file); 634e145b35bSAl Viro if (err) 635e145b35bSAl Viro goto group_add_out; 636e145b35bSAl Viro 637e145b35bSAl Viro err = ext4_group_add(sb, input); 638e145b35bSAl Viro if (EXT4_SB(sb)->s_journal) { 639e145b35bSAl Viro jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 640e145b35bSAl Viro err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 641e145b35bSAl Viro jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 642e145b35bSAl Viro } 643e145b35bSAl Viro if (err == 0) 644e145b35bSAl Viro err = err2; 645e145b35bSAl Viro mnt_drop_write_file(file); 646e145b35bSAl Viro if (!err && ext4_has_group_desc_csum(sb) && 647e145b35bSAl Viro test_opt(sb, INIT_INODE_TABLE)) 648e145b35bSAl Viro err = ext4_register_li_request(sb, input->group); 649e145b35bSAl Viro group_add_out: 650e145b35bSAl Viro ext4_resize_end(sb); 651e145b35bSAl Viro return err; 652e145b35bSAl Viro } 653e145b35bSAl Viro 654dc7ac6c4SWang Shilong static int ext4_ioctl_check_project(struct inode *inode, struct fsxattr *fa) 655dc7ac6c4SWang Shilong { 656dc7ac6c4SWang Shilong /* 657dc7ac6c4SWang Shilong * Project Quota ID state is only allowed to change from within the init 658dc7ac6c4SWang Shilong * namespace. Enforce that restriction only if we are trying to change 659dc7ac6c4SWang Shilong * the quota ID state. Everything else is allowed in user namespaces. 660dc7ac6c4SWang Shilong */ 661dc7ac6c4SWang Shilong if (current_user_ns() == &init_user_ns) 662dc7ac6c4SWang Shilong return 0; 663dc7ac6c4SWang Shilong 664dc7ac6c4SWang Shilong if (__kprojid_val(EXT4_I(inode)->i_projid) != fa->fsx_projid) 665dc7ac6c4SWang Shilong return -EINVAL; 666dc7ac6c4SWang Shilong 667dc7ac6c4SWang Shilong if (ext4_test_inode_flag(inode, EXT4_INODE_PROJINHERIT)) { 668dc7ac6c4SWang Shilong if (!(fa->fsx_xflags & FS_XFLAG_PROJINHERIT)) 669dc7ac6c4SWang Shilong return -EINVAL; 670dc7ac6c4SWang Shilong } else { 671dc7ac6c4SWang Shilong if (fa->fsx_xflags & FS_XFLAG_PROJINHERIT) 672dc7ac6c4SWang Shilong return -EINVAL; 673dc7ac6c4SWang Shilong } 674dc7ac6c4SWang Shilong 675dc7ac6c4SWang Shilong return 0; 676dc7ac6c4SWang Shilong } 677dc7ac6c4SWang Shilong 6789b7365fcSLi Xi long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 6799b7365fcSLi Xi { 6809b7365fcSLi Xi struct inode *inode = file_inode(filp); 6819b7365fcSLi Xi struct super_block *sb = inode->i_sb; 6829b7365fcSLi Xi struct ext4_inode_info *ei = EXT4_I(inode); 6839b7365fcSLi Xi unsigned int flags; 6849b7365fcSLi Xi 6859b7365fcSLi Xi ext4_debug("cmd = %u, arg = %lu\n", cmd, arg); 6869b7365fcSLi Xi 6879b7365fcSLi Xi switch (cmd) { 6880c9ec4beSDarrick J. Wong case FS_IOC_GETFSMAP: 6890c9ec4beSDarrick J. Wong return ext4_ioc_getfsmap(sb, (void __user *)arg); 6909b7365fcSLi Xi case EXT4_IOC_GETFLAGS: 6919b7365fcSLi Xi flags = ei->i_flags & EXT4_FL_USER_VISIBLE; 6929b7365fcSLi Xi return put_user(flags, (int __user *) arg); 6939b7365fcSLi Xi case EXT4_IOC_SETFLAGS: { 6949b7365fcSLi Xi int err; 6959b7365fcSLi Xi 6969b7365fcSLi Xi if (!inode_owner_or_capable(inode)) 6979b7365fcSLi Xi return -EACCES; 6989b7365fcSLi Xi 6999b7365fcSLi Xi if (get_user(flags, (int __user *) arg)) 7009b7365fcSLi Xi return -EFAULT; 7019b7365fcSLi Xi 702d14e7683SJan Kara if (flags & ~EXT4_FL_USER_VISIBLE) 703d14e7683SJan Kara return -EOPNOTSUPP; 704d14e7683SJan Kara /* 705d14e7683SJan Kara * chattr(1) grabs flags via GETFLAGS, modifies the result and 706d14e7683SJan Kara * passes that to SETFLAGS. So we cannot easily make SETFLAGS 707d14e7683SJan Kara * more restrictive than just silently masking off visible but 708d14e7683SJan Kara * not settable flags as we always did. 709d14e7683SJan Kara */ 710d14e7683SJan Kara flags &= EXT4_FL_USER_MODIFIABLE; 711d14e7683SJan Kara if (ext4_mask_flags(inode->i_mode, flags) != flags) 712d14e7683SJan Kara return -EOPNOTSUPP; 713d14e7683SJan Kara 7149b7365fcSLi Xi err = mnt_want_write_file(filp); 7159b7365fcSLi Xi if (err) 7169b7365fcSLi Xi return err; 7179b7365fcSLi Xi 7185955102cSAl Viro inode_lock(inode); 7199b7365fcSLi Xi err = ext4_ioctl_setflags(inode, flags); 7205955102cSAl Viro inode_unlock(inode); 7212a79f17eSAl Viro mnt_drop_write_file(filp); 722ac27a0ecSDave Kleikamp return err; 723ac27a0ecSDave Kleikamp } 724617ba13bSMingming Cao case EXT4_IOC_GETVERSION: 725617ba13bSMingming Cao case EXT4_IOC_GETVERSION_OLD: 726ac27a0ecSDave Kleikamp return put_user(inode->i_generation, (int __user *) arg); 727617ba13bSMingming Cao case EXT4_IOC_SETVERSION: 728617ba13bSMingming Cao case EXT4_IOC_SETVERSION_OLD: { 729ac27a0ecSDave Kleikamp handle_t *handle; 730617ba13bSMingming Cao struct ext4_iloc iloc; 731ac27a0ecSDave Kleikamp __u32 generation; 732ac27a0ecSDave Kleikamp int err; 733ac27a0ecSDave Kleikamp 7342e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 735ac27a0ecSDave Kleikamp return -EPERM; 73642a74f20SDave Hansen 7379aa5d32bSDmitry Monakhov if (ext4_has_metadata_csum(inode->i_sb)) { 738814525f4SDarrick J. Wong ext4_warning(sb, "Setting inode version is not " 739814525f4SDarrick J. Wong "supported with metadata_csum enabled."); 740814525f4SDarrick J. Wong return -ENOTTY; 741814525f4SDarrick J. Wong } 742814525f4SDarrick J. Wong 743a561be71SAl Viro err = mnt_want_write_file(filp); 74442a74f20SDave Hansen if (err) 74542a74f20SDave Hansen return err; 74642a74f20SDave Hansen if (get_user(generation, (int __user *) arg)) { 74742a74f20SDave Hansen err = -EFAULT; 74842a74f20SDave Hansen goto setversion_out; 74942a74f20SDave Hansen } 750ac27a0ecSDave Kleikamp 7515955102cSAl Viro inode_lock(inode); 7529924a92aSTheodore Ts'o handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 75342a74f20SDave Hansen if (IS_ERR(handle)) { 75442a74f20SDave Hansen err = PTR_ERR(handle); 7556c2155b9SDjalal Harouni goto unlock_out; 75642a74f20SDave Hansen } 757617ba13bSMingming Cao err = ext4_reserve_inode_write(handle, inode, &iloc); 758ac27a0ecSDave Kleikamp if (err == 0) { 759eeca7ea1SDeepa Dinamani inode->i_ctime = current_time(inode); 760ac27a0ecSDave Kleikamp inode->i_generation = generation; 761617ba13bSMingming Cao err = ext4_mark_iloc_dirty(handle, inode, &iloc); 762ac27a0ecSDave Kleikamp } 763617ba13bSMingming Cao ext4_journal_stop(handle); 7646c2155b9SDjalal Harouni 7656c2155b9SDjalal Harouni unlock_out: 7665955102cSAl Viro inode_unlock(inode); 76742a74f20SDave Hansen setversion_out: 7682a79f17eSAl Viro mnt_drop_write_file(filp); 769ac27a0ecSDave Kleikamp return err; 770ac27a0ecSDave Kleikamp } 771617ba13bSMingming Cao case EXT4_IOC_GROUP_EXTEND: { 772617ba13bSMingming Cao ext4_fsblk_t n_blocks_count; 773ac046f1dSPeng Tao int err, err2=0; 774ac27a0ecSDave Kleikamp 7758f82f840SYongqiang Yang err = ext4_resize_begin(sb); 7768f82f840SYongqiang Yang if (err) 7778f82f840SYongqiang Yang return err; 778ac27a0ecSDave Kleikamp 779014a1770SDjalal Harouni if (get_user(n_blocks_count, (__u32 __user *)arg)) { 780014a1770SDjalal Harouni err = -EFAULT; 781014a1770SDjalal Harouni goto group_extend_out; 782014a1770SDjalal Harouni } 783ac27a0ecSDave Kleikamp 784e2b911c5SDarrick J. Wong if (ext4_has_feature_bigalloc(sb)) { 785bab08ab9STheodore Ts'o ext4_msg(sb, KERN_ERR, 786bab08ab9STheodore Ts'o "Online resizing not supported with bigalloc"); 787014a1770SDjalal Harouni err = -EOPNOTSUPP; 788014a1770SDjalal Harouni goto group_extend_out; 789bab08ab9STheodore Ts'o } 790bab08ab9STheodore Ts'o 791a561be71SAl Viro err = mnt_want_write_file(filp); 79242a74f20SDave Hansen if (err) 793014a1770SDjalal Harouni goto group_extend_out; 79442a74f20SDave Hansen 795617ba13bSMingming Cao err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count); 796ac046f1dSPeng Tao if (EXT4_SB(sb)->s_journal) { 797dab291afSMingming Cao jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 7987ffe1ea8SHidehiro Kawai err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 799dab291afSMingming Cao jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 800ac046f1dSPeng Tao } 8017ffe1ea8SHidehiro Kawai if (err == 0) 8027ffe1ea8SHidehiro Kawai err = err2; 8032a79f17eSAl Viro mnt_drop_write_file(filp); 804014a1770SDjalal Harouni group_extend_out: 8058f82f840SYongqiang Yang ext4_resize_end(sb); 806ac27a0ecSDave Kleikamp return err; 807ac27a0ecSDave Kleikamp } 808748de673SAkira Fujita 809748de673SAkira Fujita case EXT4_IOC_MOVE_EXT: { 810748de673SAkira Fujita struct move_extent me; 8112903ff01SAl Viro struct fd donor; 8122903ff01SAl Viro int err; 813748de673SAkira Fujita 8144a58579bSAkira Fujita if (!(filp->f_mode & FMODE_READ) || 8154a58579bSAkira Fujita !(filp->f_mode & FMODE_WRITE)) 8164a58579bSAkira Fujita return -EBADF; 8174a58579bSAkira Fujita 818748de673SAkira Fujita if (copy_from_user(&me, 819748de673SAkira Fujita (struct move_extent __user *)arg, sizeof(me))) 820748de673SAkira Fujita return -EFAULT; 8214a58579bSAkira Fujita me.moved_len = 0; 822748de673SAkira Fujita 8232903ff01SAl Viro donor = fdget(me.donor_fd); 8242903ff01SAl Viro if (!donor.file) 825748de673SAkira Fujita return -EBADF; 826748de673SAkira Fujita 8272903ff01SAl Viro if (!(donor.file->f_mode & FMODE_WRITE)) { 8284a58579bSAkira Fujita err = -EBADF; 8294a58579bSAkira Fujita goto mext_out; 830748de673SAkira Fujita } 831748de673SAkira Fujita 832e2b911c5SDarrick J. Wong if (ext4_has_feature_bigalloc(sb)) { 833bab08ab9STheodore Ts'o ext4_msg(sb, KERN_ERR, 834bab08ab9STheodore Ts'o "Online defrag not supported with bigalloc"); 835399c9b86SAl Viro err = -EOPNOTSUPP; 836399c9b86SAl Viro goto mext_out; 83773f34a5eSRoss Zwisler } else if (IS_DAX(inode)) { 83873f34a5eSRoss Zwisler ext4_msg(sb, KERN_ERR, 83973f34a5eSRoss Zwisler "Online defrag not supported with DAX"); 84073f34a5eSRoss Zwisler err = -EOPNOTSUPP; 84173f34a5eSRoss Zwisler goto mext_out; 842bab08ab9STheodore Ts'o } 843bab08ab9STheodore Ts'o 844a561be71SAl Viro err = mnt_want_write_file(filp); 8454a58579bSAkira Fujita if (err) 8464a58579bSAkira Fujita goto mext_out; 8474a58579bSAkira Fujita 8482903ff01SAl Viro err = ext4_move_extents(filp, donor.file, me.orig_start, 849748de673SAkira Fujita me.donor_start, me.len, &me.moved_len); 8502a79f17eSAl Viro mnt_drop_write_file(filp); 851748de673SAkira Fujita 852c437b273SAkira Fujita if (copy_to_user((struct move_extent __user *)arg, 853c437b273SAkira Fujita &me, sizeof(me))) 8544a58579bSAkira Fujita err = -EFAULT; 8554a58579bSAkira Fujita mext_out: 8562903ff01SAl Viro fdput(donor); 857748de673SAkira Fujita return err; 858748de673SAkira Fujita } 859748de673SAkira Fujita 860617ba13bSMingming Cao case EXT4_IOC_GROUP_ADD: { 861617ba13bSMingming Cao struct ext4_new_group_data input; 862ac27a0ecSDave Kleikamp 863617ba13bSMingming Cao if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg, 864e145b35bSAl Viro sizeof(input))) 865e145b35bSAl Viro return -EFAULT; 866ac27a0ecSDave Kleikamp 867e145b35bSAl Viro return ext4_ioctl_group_add(filp, &input); 868ac27a0ecSDave Kleikamp } 869ac27a0ecSDave Kleikamp 870c14c6fd5SAneesh Kumar K.V case EXT4_IOC_MIGRATE: 8712a43a878SAneesh Kumar K.V { 8722a43a878SAneesh Kumar K.V int err; 8732e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 8742a43a878SAneesh Kumar K.V return -EACCES; 8752a43a878SAneesh Kumar K.V 876a561be71SAl Viro err = mnt_want_write_file(filp); 8772a43a878SAneesh Kumar K.V if (err) 8782a43a878SAneesh Kumar K.V return err; 8792a43a878SAneesh Kumar K.V /* 8802a43a878SAneesh Kumar K.V * inode_mutex prevent write and truncate on the file. 8812a43a878SAneesh Kumar K.V * Read still goes through. We take i_data_sem in 8822a43a878SAneesh Kumar K.V * ext4_ext_swap_inode_data before we switch the 8832a43a878SAneesh Kumar K.V * inode format to prevent read. 8842a43a878SAneesh Kumar K.V */ 8855955102cSAl Viro inode_lock((inode)); 8862a43a878SAneesh Kumar K.V err = ext4_ext_migrate(inode); 8875955102cSAl Viro inode_unlock((inode)); 8882a79f17eSAl Viro mnt_drop_write_file(filp); 8892a43a878SAneesh Kumar K.V return err; 8902a43a878SAneesh Kumar K.V } 891c14c6fd5SAneesh Kumar K.V 892ccd2506bSTheodore Ts'o case EXT4_IOC_ALLOC_DA_BLKS: 893ccd2506bSTheodore Ts'o { 894ccd2506bSTheodore Ts'o int err; 8952e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 896ccd2506bSTheodore Ts'o return -EACCES; 897ccd2506bSTheodore Ts'o 898a561be71SAl Viro err = mnt_want_write_file(filp); 899ccd2506bSTheodore Ts'o if (err) 900ccd2506bSTheodore Ts'o return err; 901ccd2506bSTheodore Ts'o err = ext4_alloc_da_blocks(inode); 9022a79f17eSAl Viro mnt_drop_write_file(filp); 903ccd2506bSTheodore Ts'o return err; 904ccd2506bSTheodore Ts'o } 905ccd2506bSTheodore Ts'o 906393d1d1dSDr. Tilmann Bubeck case EXT4_IOC_SWAP_BOOT: 9073e67cfadSDmitry Monakhov { 9083e67cfadSDmitry Monakhov int err; 909393d1d1dSDr. Tilmann Bubeck if (!(filp->f_mode & FMODE_WRITE)) 910393d1d1dSDr. Tilmann Bubeck return -EBADF; 9113e67cfadSDmitry Monakhov err = mnt_want_write_file(filp); 9123e67cfadSDmitry Monakhov if (err) 9133e67cfadSDmitry Monakhov return err; 9143e67cfadSDmitry Monakhov err = swap_inode_boot_loader(sb, inode); 9153e67cfadSDmitry Monakhov mnt_drop_write_file(filp); 9163e67cfadSDmitry Monakhov return err; 9173e67cfadSDmitry Monakhov } 918393d1d1dSDr. Tilmann Bubeck 91919c5246dSYongqiang Yang case EXT4_IOC_RESIZE_FS: { 92019c5246dSYongqiang Yang ext4_fsblk_t n_blocks_count; 92119c5246dSYongqiang Yang int err = 0, err2 = 0; 9227f511862STheodore Ts'o ext4_group_t o_group = EXT4_SB(sb)->s_groups_count; 92319c5246dSYongqiang Yang 92419c5246dSYongqiang Yang if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, 92519c5246dSYongqiang Yang sizeof(__u64))) { 92619c5246dSYongqiang Yang return -EFAULT; 92719c5246dSYongqiang Yang } 92819c5246dSYongqiang Yang 92919c5246dSYongqiang Yang err = ext4_resize_begin(sb); 93019c5246dSYongqiang Yang if (err) 93119c5246dSYongqiang Yang return err; 93219c5246dSYongqiang Yang 9338cae6f71SAl Viro err = mnt_want_write_file(filp); 93419c5246dSYongqiang Yang if (err) 93519c5246dSYongqiang Yang goto resizefs_out; 93619c5246dSYongqiang Yang 93719c5246dSYongqiang Yang err = ext4_resize_fs(sb, n_blocks_count); 93819c5246dSYongqiang Yang if (EXT4_SB(sb)->s_journal) { 93919c5246dSYongqiang Yang jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 94019c5246dSYongqiang Yang err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 94119c5246dSYongqiang Yang jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 94219c5246dSYongqiang Yang } 94319c5246dSYongqiang Yang if (err == 0) 94419c5246dSYongqiang Yang err = err2; 9458cae6f71SAl Viro mnt_drop_write_file(filp); 9467f511862STheodore Ts'o if (!err && (o_group > EXT4_SB(sb)->s_groups_count) && 9477f511862STheodore Ts'o ext4_has_group_desc_csum(sb) && 9487f511862STheodore Ts'o test_opt(sb, INIT_INODE_TABLE)) 9497f511862STheodore Ts'o err = ext4_register_li_request(sb, o_group); 9507f511862STheodore Ts'o 95119c5246dSYongqiang Yang resizefs_out: 95219c5246dSYongqiang Yang ext4_resize_end(sb); 95319c5246dSYongqiang Yang return err; 95419c5246dSYongqiang Yang } 95519c5246dSYongqiang Yang 956e681c047SLukas Czerner case FITRIM: 957e681c047SLukas Czerner { 95841431792SLukas Czerner struct request_queue *q = bdev_get_queue(sb->s_bdev); 959e681c047SLukas Czerner struct fstrim_range range; 960e681c047SLukas Czerner int ret = 0; 961e681c047SLukas Czerner 962e681c047SLukas Czerner if (!capable(CAP_SYS_ADMIN)) 963e681c047SLukas Czerner return -EPERM; 964e681c047SLukas Czerner 96541431792SLukas Czerner if (!blk_queue_discard(q)) 96641431792SLukas Czerner return -EOPNOTSUPP; 96741431792SLukas Czerner 968e6705f7cSH Hartley Sweeten if (copy_from_user(&range, (struct fstrim_range __user *)arg, 969e681c047SLukas Czerner sizeof(range))) 970e681c047SLukas Czerner return -EFAULT; 971e681c047SLukas Czerner 9725c2ed62fSLukas Czerner range.minlen = max((unsigned int)range.minlen, 9735c2ed62fSLukas Czerner q->limits.discard_granularity); 974e681c047SLukas Czerner ret = ext4_trim_fs(sb, &range); 975e681c047SLukas Czerner if (ret < 0) 976e681c047SLukas Czerner return ret; 977e681c047SLukas Czerner 978e6705f7cSH Hartley Sweeten if (copy_to_user((struct fstrim_range __user *)arg, &range, 979e681c047SLukas Czerner sizeof(range))) 980e681c047SLukas Czerner return -EFAULT; 981e681c047SLukas Czerner 982e681c047SLukas Czerner return 0; 983e681c047SLukas Czerner } 9847869a4a6STheodore Ts'o case EXT4_IOC_PRECACHE_EXTENTS: 9857869a4a6STheodore Ts'o return ext4_ext_precache(inode); 986e681c047SLukas Czerner 987db717d8eSEric Biggers case EXT4_IOC_SET_ENCRYPTION_POLICY: 9889a200d07SRichard Weinberger if (!ext4_has_feature_encrypt(sb)) 9899a200d07SRichard Weinberger return -EOPNOTSUPP; 990db717d8eSEric Biggers return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); 9919a200d07SRichard Weinberger 9929bd8212fSMichael Halcrow case EXT4_IOC_GET_ENCRYPTION_PWSALT: { 993ba679017SEric Biggers #ifdef CONFIG_EXT4_FS_ENCRYPTION 9949bd8212fSMichael Halcrow int err, err2; 9959bd8212fSMichael Halcrow struct ext4_sb_info *sbi = EXT4_SB(sb); 9969bd8212fSMichael Halcrow handle_t *handle; 9979bd8212fSMichael Halcrow 99835997d1cSEric Biggers if (!ext4_has_feature_encrypt(sb)) 9999bd8212fSMichael Halcrow return -EOPNOTSUPP; 10009bd8212fSMichael Halcrow if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) { 10019bd8212fSMichael Halcrow err = mnt_want_write_file(filp); 10029bd8212fSMichael Halcrow if (err) 10039bd8212fSMichael Halcrow return err; 10049bd8212fSMichael Halcrow handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1); 10059bd8212fSMichael Halcrow if (IS_ERR(handle)) { 10069bd8212fSMichael Halcrow err = PTR_ERR(handle); 10079bd8212fSMichael Halcrow goto pwsalt_err_exit; 10089bd8212fSMichael Halcrow } 10099bd8212fSMichael Halcrow err = ext4_journal_get_write_access(handle, sbi->s_sbh); 10109bd8212fSMichael Halcrow if (err) 10119bd8212fSMichael Halcrow goto pwsalt_err_journal; 10129bd8212fSMichael Halcrow generate_random_uuid(sbi->s_es->s_encrypt_pw_salt); 10139bd8212fSMichael Halcrow err = ext4_handle_dirty_metadata(handle, NULL, 10149bd8212fSMichael Halcrow sbi->s_sbh); 10159bd8212fSMichael Halcrow pwsalt_err_journal: 10169bd8212fSMichael Halcrow err2 = ext4_journal_stop(handle); 10179bd8212fSMichael Halcrow if (err2 && !err) 10189bd8212fSMichael Halcrow err = err2; 10199bd8212fSMichael Halcrow pwsalt_err_exit: 10209bd8212fSMichael Halcrow mnt_drop_write_file(filp); 10219bd8212fSMichael Halcrow if (err) 10229bd8212fSMichael Halcrow return err; 10239bd8212fSMichael Halcrow } 1024b4ab9e29SFabian Frederick if (copy_to_user((void __user *) arg, 1025b4ab9e29SFabian Frederick sbi->s_es->s_encrypt_pw_salt, 16)) 10269bd8212fSMichael Halcrow return -EFAULT; 10279bd8212fSMichael Halcrow return 0; 1028ba679017SEric Biggers #else 1029ba679017SEric Biggers return -EOPNOTSUPP; 1030ba679017SEric Biggers #endif 10319bd8212fSMichael Halcrow } 1032db717d8eSEric Biggers case EXT4_IOC_GET_ENCRYPTION_POLICY: 1033db717d8eSEric Biggers return fscrypt_ioctl_get_policy(filp, (void __user *)arg); 10349bd8212fSMichael Halcrow 10359b7365fcSLi Xi case EXT4_IOC_FSGETXATTR: 10369b7365fcSLi Xi { 10379b7365fcSLi Xi struct fsxattr fa; 10389b7365fcSLi Xi 10399b7365fcSLi Xi memset(&fa, 0, sizeof(struct fsxattr)); 10409b7365fcSLi Xi fa.fsx_xflags = ext4_iflags_to_xflags(ei->i_flags & EXT4_FL_USER_VISIBLE); 10419b7365fcSLi Xi 10420b7b7779SKaho Ng if (ext4_has_feature_project(inode->i_sb)) { 10439b7365fcSLi Xi fa.fsx_projid = (__u32)from_kprojid(&init_user_ns, 10449b7365fcSLi Xi EXT4_I(inode)->i_projid); 10459b7365fcSLi Xi } 10469b7365fcSLi Xi 10479b7365fcSLi Xi if (copy_to_user((struct fsxattr __user *)arg, 10489b7365fcSLi Xi &fa, sizeof(fa))) 10499b7365fcSLi Xi return -EFAULT; 10509b7365fcSLi Xi return 0; 10519b7365fcSLi Xi } 10529b7365fcSLi Xi case EXT4_IOC_FSSETXATTR: 10539b7365fcSLi Xi { 10549b7365fcSLi Xi struct fsxattr fa; 10559b7365fcSLi Xi int err; 10569b7365fcSLi Xi 10579b7365fcSLi Xi if (copy_from_user(&fa, (struct fsxattr __user *)arg, 10589b7365fcSLi Xi sizeof(fa))) 10599b7365fcSLi Xi return -EFAULT; 10609b7365fcSLi Xi 10619b7365fcSLi Xi /* Make sure caller has proper permission */ 10629b7365fcSLi Xi if (!inode_owner_or_capable(inode)) 10639b7365fcSLi Xi return -EACCES; 10649b7365fcSLi Xi 1065d14e7683SJan Kara if (fa.fsx_xflags & ~EXT4_SUPPORTED_FS_XFLAGS) 1066d14e7683SJan Kara return -EOPNOTSUPP; 1067d14e7683SJan Kara 1068d14e7683SJan Kara flags = ext4_xflags_to_iflags(fa.fsx_xflags); 1069d14e7683SJan Kara if (ext4_mask_flags(inode->i_mode, flags) != flags) 1070d14e7683SJan Kara return -EOPNOTSUPP; 1071d14e7683SJan Kara 10729b7365fcSLi Xi err = mnt_want_write_file(filp); 10739b7365fcSLi Xi if (err) 10749b7365fcSLi Xi return err; 10759b7365fcSLi Xi 10765955102cSAl Viro inode_lock(inode); 1077dc7ac6c4SWang Shilong err = ext4_ioctl_check_project(inode, &fa); 1078dc7ac6c4SWang Shilong if (err) 1079dc7ac6c4SWang Shilong goto out; 10809b7365fcSLi Xi flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) | 10819b7365fcSLi Xi (flags & EXT4_FL_XFLAG_VISIBLE); 10829b7365fcSLi Xi err = ext4_ioctl_setflags(inode, flags); 1083dc7ac6c4SWang Shilong if (err) 1084dc7ac6c4SWang Shilong goto out; 1085dc7ac6c4SWang Shilong err = ext4_ioctl_setproject(filp, fa.fsx_projid); 1086dc7ac6c4SWang Shilong out: 10875955102cSAl Viro inode_unlock(inode); 10889b7365fcSLi Xi mnt_drop_write_file(filp); 10899b7365fcSLi Xi return err; 10909b7365fcSLi Xi } 1091e9be2ac7STheodore Ts'o case EXT4_IOC_SHUTDOWN: 1092e9be2ac7STheodore Ts'o return ext4_shutdown(sb, arg); 1093ac27a0ecSDave Kleikamp default: 1094ac27a0ecSDave Kleikamp return -ENOTTY; 1095ac27a0ecSDave Kleikamp } 1096ac27a0ecSDave Kleikamp } 1097ac27a0ecSDave Kleikamp 1098ac27a0ecSDave Kleikamp #ifdef CONFIG_COMPAT 1099617ba13bSMingming Cao long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 1100ac27a0ecSDave Kleikamp { 1101ac27a0ecSDave Kleikamp /* These are just misnamed, they actually get/put from/to user an int */ 1102ac27a0ecSDave Kleikamp switch (cmd) { 1103617ba13bSMingming Cao case EXT4_IOC32_GETFLAGS: 1104617ba13bSMingming Cao cmd = EXT4_IOC_GETFLAGS; 1105ac27a0ecSDave Kleikamp break; 1106617ba13bSMingming Cao case EXT4_IOC32_SETFLAGS: 1107617ba13bSMingming Cao cmd = EXT4_IOC_SETFLAGS; 1108ac27a0ecSDave Kleikamp break; 1109617ba13bSMingming Cao case EXT4_IOC32_GETVERSION: 1110617ba13bSMingming Cao cmd = EXT4_IOC_GETVERSION; 1111ac27a0ecSDave Kleikamp break; 1112617ba13bSMingming Cao case EXT4_IOC32_SETVERSION: 1113617ba13bSMingming Cao cmd = EXT4_IOC_SETVERSION; 1114ac27a0ecSDave Kleikamp break; 1115617ba13bSMingming Cao case EXT4_IOC32_GROUP_EXTEND: 1116617ba13bSMingming Cao cmd = EXT4_IOC_GROUP_EXTEND; 1117ac27a0ecSDave Kleikamp break; 1118617ba13bSMingming Cao case EXT4_IOC32_GETVERSION_OLD: 1119617ba13bSMingming Cao cmd = EXT4_IOC_GETVERSION_OLD; 1120ac27a0ecSDave Kleikamp break; 1121617ba13bSMingming Cao case EXT4_IOC32_SETVERSION_OLD: 1122617ba13bSMingming Cao cmd = EXT4_IOC_SETVERSION_OLD; 1123ac27a0ecSDave Kleikamp break; 1124617ba13bSMingming Cao case EXT4_IOC32_GETRSVSZ: 1125617ba13bSMingming Cao cmd = EXT4_IOC_GETRSVSZ; 1126ac27a0ecSDave Kleikamp break; 1127617ba13bSMingming Cao case EXT4_IOC32_SETRSVSZ: 1128617ba13bSMingming Cao cmd = EXT4_IOC_SETRSVSZ; 1129ac27a0ecSDave Kleikamp break; 11304d92dc0fSBen Hutchings case EXT4_IOC32_GROUP_ADD: { 11314d92dc0fSBen Hutchings struct compat_ext4_new_group_input __user *uinput; 1132e145b35bSAl Viro struct ext4_new_group_data input; 11334d92dc0fSBen Hutchings int err; 11344d92dc0fSBen Hutchings 11354d92dc0fSBen Hutchings uinput = compat_ptr(arg); 11364d92dc0fSBen Hutchings err = get_user(input.group, &uinput->group); 11374d92dc0fSBen Hutchings err |= get_user(input.block_bitmap, &uinput->block_bitmap); 11384d92dc0fSBen Hutchings err |= get_user(input.inode_bitmap, &uinput->inode_bitmap); 11394d92dc0fSBen Hutchings err |= get_user(input.inode_table, &uinput->inode_table); 11404d92dc0fSBen Hutchings err |= get_user(input.blocks_count, &uinput->blocks_count); 11414d92dc0fSBen Hutchings err |= get_user(input.reserved_blocks, 11424d92dc0fSBen Hutchings &uinput->reserved_blocks); 11434d92dc0fSBen Hutchings if (err) 11444d92dc0fSBen Hutchings return -EFAULT; 1145e145b35bSAl Viro return ext4_ioctl_group_add(file, &input); 11464d92dc0fSBen Hutchings } 1147b684b2eeSChristian Borntraeger case EXT4_IOC_MOVE_EXT: 114819c5246dSYongqiang Yang case EXT4_IOC_RESIZE_FS: 11497869a4a6STheodore Ts'o case EXT4_IOC_PRECACHE_EXTENTS: 11509bd8212fSMichael Halcrow case EXT4_IOC_SET_ENCRYPTION_POLICY: 11519bd8212fSMichael Halcrow case EXT4_IOC_GET_ENCRYPTION_PWSALT: 11529bd8212fSMichael Halcrow case EXT4_IOC_GET_ENCRYPTION_POLICY: 1153e9be2ac7STheodore Ts'o case EXT4_IOC_SHUTDOWN: 11540c9ec4beSDarrick J. Wong case FS_IOC_GETFSMAP: 1155b684b2eeSChristian Borntraeger break; 1156ac27a0ecSDave Kleikamp default: 1157ac27a0ecSDave Kleikamp return -ENOIOCTLCMD; 1158ac27a0ecSDave Kleikamp } 11595cdd7b2dSAndi Kleen return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); 1160ac27a0ecSDave Kleikamp } 1161ac27a0ecSDave Kleikamp #endif 1162