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> 188da4b8c4SAndy Shevchenko #include <linux/uuid.h> 197c0f6ba6SLinus Torvalds #include <linux/uaccess.h> 20783d9485STheodore Ts'o #include <linux/delay.h> 213dcf5451SChristoph Hellwig #include "ext4_jbd2.h" 223dcf5451SChristoph Hellwig #include "ext4.h" 230c9ec4beSDarrick J. Wong #include <linux/fsmap.h> 240c9ec4beSDarrick J. Wong #include "fsmap.h" 250c9ec4beSDarrick J. Wong #include <trace/events/ext4.h> 26ac27a0ecSDave Kleikamp 27393d1d1dSDr. Tilmann Bubeck /** 28393d1d1dSDr. Tilmann Bubeck * Swap memory between @a and @b for @len bytes. 29393d1d1dSDr. Tilmann Bubeck * 30393d1d1dSDr. Tilmann Bubeck * @a: pointer to first memory area 31393d1d1dSDr. Tilmann Bubeck * @b: pointer to second memory area 32393d1d1dSDr. Tilmann Bubeck * @len: number of bytes to swap 33393d1d1dSDr. Tilmann Bubeck * 34393d1d1dSDr. Tilmann Bubeck */ 35393d1d1dSDr. Tilmann Bubeck static void memswap(void *a, void *b, size_t len) 36393d1d1dSDr. Tilmann Bubeck { 37393d1d1dSDr. Tilmann Bubeck unsigned char *ap, *bp; 38393d1d1dSDr. Tilmann Bubeck 39393d1d1dSDr. Tilmann Bubeck ap = (unsigned char *)a; 40393d1d1dSDr. Tilmann Bubeck bp = (unsigned char *)b; 41393d1d1dSDr. Tilmann Bubeck while (len-- > 0) { 424b7e2db5SFabian Frederick swap(*ap, *bp); 43393d1d1dSDr. Tilmann Bubeck ap++; 44393d1d1dSDr. Tilmann Bubeck bp++; 45393d1d1dSDr. Tilmann Bubeck } 46393d1d1dSDr. Tilmann Bubeck } 47393d1d1dSDr. Tilmann Bubeck 48393d1d1dSDr. Tilmann Bubeck /** 49393d1d1dSDr. Tilmann Bubeck * Swap i_data and associated attributes between @inode1 and @inode2. 50393d1d1dSDr. Tilmann Bubeck * This function is used for the primary swap between inode1 and inode2 51393d1d1dSDr. Tilmann Bubeck * and also to revert this primary swap in case of errors. 52393d1d1dSDr. Tilmann Bubeck * 53393d1d1dSDr. Tilmann Bubeck * Therefore you have to make sure, that calling this method twice 54393d1d1dSDr. Tilmann Bubeck * will revert all changes. 55393d1d1dSDr. Tilmann Bubeck * 56393d1d1dSDr. Tilmann Bubeck * @inode1: pointer to first inode 57393d1d1dSDr. Tilmann Bubeck * @inode2: pointer to second inode 58393d1d1dSDr. Tilmann Bubeck */ 59393d1d1dSDr. Tilmann Bubeck static void swap_inode_data(struct inode *inode1, struct inode *inode2) 60393d1d1dSDr. Tilmann Bubeck { 61393d1d1dSDr. Tilmann Bubeck loff_t isize; 62393d1d1dSDr. Tilmann Bubeck struct ext4_inode_info *ei1; 63393d1d1dSDr. Tilmann Bubeck struct ext4_inode_info *ei2; 64393d1d1dSDr. Tilmann Bubeck 65393d1d1dSDr. Tilmann Bubeck ei1 = EXT4_I(inode1); 66393d1d1dSDr. Tilmann Bubeck ei2 = EXT4_I(inode2); 67393d1d1dSDr. Tilmann Bubeck 689c5d58fbSJeff Layton swap(inode1->i_flags, inode2->i_flags); 699c5d58fbSJeff Layton swap(inode1->i_version, inode2->i_version); 709c5d58fbSJeff Layton swap(inode1->i_blocks, inode2->i_blocks); 719c5d58fbSJeff Layton swap(inode1->i_bytes, inode2->i_bytes); 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)); 769c5d58fbSJeff Layton swap(ei1->i_flags, ei2->i_flags); 779c5d58fbSJeff Layton swap(ei1->i_disksize, ei2->i_disksize); 78cde2d7a7STheodore Ts'o ext4_es_remove_extent(inode1, 0, EXT_MAX_BLOCKS); 79cde2d7a7STheodore Ts'o ext4_es_remove_extent(inode2, 0, EXT_MAX_BLOCKS); 80393d1d1dSDr. Tilmann Bubeck 81393d1d1dSDr. Tilmann Bubeck isize = i_size_read(inode1); 82393d1d1dSDr. Tilmann Bubeck i_size_write(inode1, i_size_read(inode2)); 83393d1d1dSDr. Tilmann Bubeck i_size_write(inode2, isize); 84393d1d1dSDr. Tilmann Bubeck } 85393d1d1dSDr. Tilmann Bubeck 86393d1d1dSDr. Tilmann Bubeck /** 87393d1d1dSDr. Tilmann Bubeck * Swap the information from the given @inode and the inode 88393d1d1dSDr. Tilmann Bubeck * EXT4_BOOT_LOADER_INO. It will basically swap i_data and all other 89393d1d1dSDr. Tilmann Bubeck * important fields of the inodes. 90393d1d1dSDr. Tilmann Bubeck * 91393d1d1dSDr. Tilmann Bubeck * @sb: the super block of the filesystem 92393d1d1dSDr. Tilmann Bubeck * @inode: the inode to swap with EXT4_BOOT_LOADER_INO 93393d1d1dSDr. Tilmann Bubeck * 94393d1d1dSDr. Tilmann Bubeck */ 95393d1d1dSDr. Tilmann Bubeck static long swap_inode_boot_loader(struct super_block *sb, 96393d1d1dSDr. Tilmann Bubeck struct inode *inode) 97393d1d1dSDr. Tilmann Bubeck { 98393d1d1dSDr. Tilmann Bubeck handle_t *handle; 99393d1d1dSDr. Tilmann Bubeck int err; 100393d1d1dSDr. Tilmann Bubeck struct inode *inode_bl; 101393d1d1dSDr. Tilmann Bubeck struct ext4_inode_info *ei_bl; 102d7092ae2Sjon ernst struct ext4_sb_info *sbi = EXT4_SB(sb); 103393d1d1dSDr. Tilmann Bubeck 104d8558a29STheodore Ts'o if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode)) 105d8558a29STheodore Ts'o return -EINVAL; 106393d1d1dSDr. Tilmann Bubeck 107d8558a29STheodore Ts'o if (!inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN)) 108d8558a29STheodore Ts'o return -EPERM; 109393d1d1dSDr. Tilmann Bubeck 110393d1d1dSDr. Tilmann Bubeck inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO); 111d8558a29STheodore Ts'o if (IS_ERR(inode_bl)) 112d8558a29STheodore Ts'o return PTR_ERR(inode_bl); 113393d1d1dSDr. Tilmann Bubeck ei_bl = EXT4_I(inode_bl); 114393d1d1dSDr. Tilmann Bubeck 115393d1d1dSDr. Tilmann Bubeck filemap_flush(inode->i_mapping); 116393d1d1dSDr. Tilmann Bubeck filemap_flush(inode_bl->i_mapping); 117393d1d1dSDr. Tilmann Bubeck 118393d1d1dSDr. Tilmann Bubeck /* Protect orig inodes against a truncate and make sure, 119393d1d1dSDr. Tilmann Bubeck * that only 1 swap_inode_boot_loader is running. */ 120375e289eSJ. Bruce Fields lock_two_nondirectories(inode, inode_bl); 121393d1d1dSDr. Tilmann Bubeck 122393d1d1dSDr. Tilmann Bubeck truncate_inode_pages(&inode->i_data, 0); 123393d1d1dSDr. Tilmann Bubeck truncate_inode_pages(&inode_bl->i_data, 0); 124393d1d1dSDr. Tilmann Bubeck 125393d1d1dSDr. Tilmann Bubeck /* Wait for all existing dio workers */ 126393d1d1dSDr. Tilmann Bubeck ext4_inode_block_unlocked_dio(inode); 127393d1d1dSDr. Tilmann Bubeck ext4_inode_block_unlocked_dio(inode_bl); 128393d1d1dSDr. Tilmann Bubeck inode_dio_wait(inode); 129393d1d1dSDr. Tilmann Bubeck inode_dio_wait(inode_bl); 130393d1d1dSDr. Tilmann Bubeck 131393d1d1dSDr. Tilmann Bubeck handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2); 132393d1d1dSDr. Tilmann Bubeck if (IS_ERR(handle)) { 133393d1d1dSDr. Tilmann Bubeck err = -EINVAL; 13430d29b11SZheng Liu goto journal_err_out; 135393d1d1dSDr. Tilmann Bubeck } 136393d1d1dSDr. Tilmann Bubeck 137393d1d1dSDr. Tilmann Bubeck /* Protect extent tree against block allocations via delalloc */ 138393d1d1dSDr. Tilmann Bubeck ext4_double_down_write_data_sem(inode, inode_bl); 139393d1d1dSDr. Tilmann Bubeck 140393d1d1dSDr. Tilmann Bubeck if (inode_bl->i_nlink == 0) { 141393d1d1dSDr. Tilmann Bubeck /* this inode has never been used as a BOOT_LOADER */ 142393d1d1dSDr. Tilmann Bubeck set_nlink(inode_bl, 1); 143393d1d1dSDr. Tilmann Bubeck i_uid_write(inode_bl, 0); 144393d1d1dSDr. Tilmann Bubeck i_gid_write(inode_bl, 0); 145393d1d1dSDr. Tilmann Bubeck inode_bl->i_flags = 0; 146393d1d1dSDr. Tilmann Bubeck ei_bl->i_flags = 0; 147393d1d1dSDr. Tilmann Bubeck inode_bl->i_version = 1; 148393d1d1dSDr. Tilmann Bubeck i_size_write(inode_bl, 0); 149393d1d1dSDr. Tilmann Bubeck inode_bl->i_mode = S_IFREG; 150e2b911c5SDarrick J. Wong if (ext4_has_feature_extents(sb)) { 151393d1d1dSDr. Tilmann Bubeck ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS); 152393d1d1dSDr. Tilmann Bubeck ext4_ext_tree_init(handle, inode_bl); 153393d1d1dSDr. Tilmann Bubeck } else 154393d1d1dSDr. Tilmann Bubeck memset(ei_bl->i_data, 0, sizeof(ei_bl->i_data)); 155393d1d1dSDr. Tilmann Bubeck } 156393d1d1dSDr. Tilmann Bubeck 157393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 158393d1d1dSDr. Tilmann Bubeck 159eeca7ea1SDeepa Dinamani inode->i_ctime = inode_bl->i_ctime = current_time(inode); 160393d1d1dSDr. Tilmann Bubeck 161393d1d1dSDr. Tilmann Bubeck spin_lock(&sbi->s_next_gen_lock); 162393d1d1dSDr. Tilmann Bubeck inode->i_generation = sbi->s_next_generation++; 163393d1d1dSDr. Tilmann Bubeck inode_bl->i_generation = sbi->s_next_generation++; 164393d1d1dSDr. Tilmann Bubeck spin_unlock(&sbi->s_next_gen_lock); 165393d1d1dSDr. Tilmann Bubeck 166393d1d1dSDr. Tilmann Bubeck ext4_discard_preallocations(inode); 167393d1d1dSDr. Tilmann Bubeck 168393d1d1dSDr. Tilmann Bubeck err = ext4_mark_inode_dirty(handle, inode); 169393d1d1dSDr. Tilmann Bubeck if (err < 0) { 170393d1d1dSDr. Tilmann Bubeck ext4_warning(inode->i_sb, 171393d1d1dSDr. Tilmann Bubeck "couldn't mark inode #%lu dirty (err %d)", 172393d1d1dSDr. Tilmann Bubeck inode->i_ino, err); 173393d1d1dSDr. Tilmann Bubeck /* Revert all changes: */ 174393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 175393d1d1dSDr. Tilmann Bubeck } else { 176393d1d1dSDr. Tilmann Bubeck err = ext4_mark_inode_dirty(handle, inode_bl); 177393d1d1dSDr. Tilmann Bubeck if (err < 0) { 178393d1d1dSDr. Tilmann Bubeck ext4_warning(inode_bl->i_sb, 179393d1d1dSDr. Tilmann Bubeck "couldn't mark inode #%lu dirty (err %d)", 180393d1d1dSDr. Tilmann Bubeck inode_bl->i_ino, err); 181393d1d1dSDr. Tilmann Bubeck /* Revert all changes: */ 182393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 183393d1d1dSDr. Tilmann Bubeck ext4_mark_inode_dirty(handle, inode); 184393d1d1dSDr. Tilmann Bubeck } 185393d1d1dSDr. Tilmann Bubeck } 186393d1d1dSDr. Tilmann Bubeck ext4_journal_stop(handle); 187393d1d1dSDr. Tilmann Bubeck ext4_double_up_write_data_sem(inode, inode_bl); 188393d1d1dSDr. Tilmann Bubeck 18930d29b11SZheng Liu journal_err_out: 190393d1d1dSDr. Tilmann Bubeck ext4_inode_resume_unlocked_dio(inode); 191393d1d1dSDr. Tilmann Bubeck ext4_inode_resume_unlocked_dio(inode_bl); 192375e289eSJ. Bruce Fields unlock_two_nondirectories(inode, inode_bl); 193393d1d1dSDr. Tilmann Bubeck iput(inode_bl); 194393d1d1dSDr. Tilmann Bubeck return err; 195393d1d1dSDr. Tilmann Bubeck } 196393d1d1dSDr. Tilmann Bubeck 197ba679017SEric Biggers #ifdef CONFIG_EXT4_FS_ENCRYPTION 1989bd8212fSMichael Halcrow static int uuid_is_zero(__u8 u[16]) 1999bd8212fSMichael Halcrow { 2009bd8212fSMichael Halcrow int i; 2019bd8212fSMichael Halcrow 2029bd8212fSMichael Halcrow for (i = 0; i < 16; i++) 2039bd8212fSMichael Halcrow if (u[i]) 2049bd8212fSMichael Halcrow return 0; 2059bd8212fSMichael Halcrow return 1; 2069bd8212fSMichael Halcrow } 207ba679017SEric Biggers #endif 2089bd8212fSMichael Halcrow 2099b7365fcSLi Xi static int ext4_ioctl_setflags(struct inode *inode, 2109b7365fcSLi Xi unsigned int flags) 211ac27a0ecSDave Kleikamp { 212617ba13bSMingming Cao struct ext4_inode_info *ei = EXT4_I(inode); 213ac27a0ecSDave Kleikamp handle_t *handle = NULL; 214fdde368eSAnton Protopopov int err = -EPERM, migrate = 0; 215617ba13bSMingming Cao struct ext4_iloc iloc; 21679906964STheodore Ts'o unsigned int oldflags, mask, i; 217ac27a0ecSDave Kleikamp unsigned int jflag; 218ac27a0ecSDave Kleikamp 219e47776a0SJan Kara /* Is it quota file? Do not allow user to mess with it */ 22002749a4cSTahsin Erdogan if (ext4_is_quota_file(inode)) 22142a74f20SDave Hansen goto flags_out; 22242a74f20SDave Hansen 223ac27a0ecSDave Kleikamp oldflags = ei->i_flags; 224ac27a0ecSDave Kleikamp 225ac27a0ecSDave Kleikamp /* The JOURNAL_DATA flag is modifiable only by root */ 226617ba13bSMingming Cao jflag = flags & EXT4_JOURNAL_DATA_FL; 227ac27a0ecSDave Kleikamp 228ac27a0ecSDave Kleikamp /* 229ac27a0ecSDave Kleikamp * The IMMUTABLE and APPEND_ONLY flags can only be changed by 230ac27a0ecSDave Kleikamp * the relevant capability. 231ac27a0ecSDave Kleikamp * 232ac27a0ecSDave Kleikamp * This test looks nicer. Thanks to Pauline Middelink 233ac27a0ecSDave Kleikamp */ 234617ba13bSMingming Cao if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) { 23542a74f20SDave Hansen if (!capable(CAP_LINUX_IMMUTABLE)) 23642a74f20SDave Hansen goto flags_out; 237ac27a0ecSDave Kleikamp } 238ac27a0ecSDave Kleikamp 239ac27a0ecSDave Kleikamp /* 240ac27a0ecSDave Kleikamp * The JOURNAL_DATA flag can only be changed by 241ac27a0ecSDave Kleikamp * the relevant capability. 242ac27a0ecSDave Kleikamp */ 243617ba13bSMingming Cao if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { 24442a74f20SDave Hansen if (!capable(CAP_SYS_RESOURCE)) 24542a74f20SDave Hansen goto flags_out; 246ac27a0ecSDave Kleikamp } 247996bb9fdSTheodore Ts'o if ((flags ^ oldflags) & EXT4_EXTENTS_FL) 2484db46fc2SAneesh Kumar K.V migrate = 1; 249ac27a0ecSDave Kleikamp 250c8d46e41SJiaying Zhang if (flags & EXT4_EOFBLOCKS_FL) { 251c8d46e41SJiaying Zhang /* we don't support adding EOFBLOCKS flag */ 252c8d46e41SJiaying Zhang if (!(oldflags & EXT4_EOFBLOCKS_FL)) { 253c8d46e41SJiaying Zhang err = -EOPNOTSUPP; 254c8d46e41SJiaying Zhang goto flags_out; 255c8d46e41SJiaying Zhang } 2562c98eb5eSTheodore Ts'o } else if (oldflags & EXT4_EOFBLOCKS_FL) { 2572c98eb5eSTheodore Ts'o err = ext4_truncate(inode); 2582c98eb5eSTheodore Ts'o if (err) 2592c98eb5eSTheodore Ts'o goto flags_out; 2602c98eb5eSTheodore Ts'o } 261c8d46e41SJiaying Zhang 2629924a92aSTheodore Ts'o handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 263ac27a0ecSDave Kleikamp if (IS_ERR(handle)) { 26442a74f20SDave Hansen err = PTR_ERR(handle); 26542a74f20SDave Hansen goto flags_out; 266ac27a0ecSDave Kleikamp } 267ac27a0ecSDave Kleikamp if (IS_SYNC(inode)) 2680390131bSFrank Mayhar ext4_handle_sync(handle); 269617ba13bSMingming Cao err = ext4_reserve_inode_write(handle, inode, &iloc); 270ac27a0ecSDave Kleikamp if (err) 271ac27a0ecSDave Kleikamp goto flags_err; 272ac27a0ecSDave Kleikamp 27379906964STheodore Ts'o for (i = 0, mask = 1; i < 32; i++, mask <<= 1) { 27479906964STheodore Ts'o if (!(mask & EXT4_FL_USER_MODIFIABLE)) 27579906964STheodore Ts'o continue; 276f8011d93SJan Kara /* These flags get special treatment later */ 277f8011d93SJan Kara if (mask == EXT4_JOURNAL_DATA_FL || mask == EXT4_EXTENTS_FL) 278f8011d93SJan Kara continue; 27979906964STheodore Ts'o if (mask & flags) 28079906964STheodore Ts'o ext4_set_inode_flag(inode, i); 28179906964STheodore Ts'o else 28279906964STheodore Ts'o ext4_clear_inode_flag(inode, i); 28379906964STheodore Ts'o } 284ac27a0ecSDave Kleikamp 285617ba13bSMingming Cao ext4_set_inode_flags(inode); 286eeca7ea1SDeepa Dinamani inode->i_ctime = current_time(inode); 287ac27a0ecSDave Kleikamp 288617ba13bSMingming Cao err = ext4_mark_iloc_dirty(handle, inode, &iloc); 289ac27a0ecSDave Kleikamp flags_err: 290617ba13bSMingming Cao ext4_journal_stop(handle); 29142a74f20SDave Hansen if (err) 29242a74f20SDave Hansen goto flags_out; 293ac27a0ecSDave Kleikamp 294617ba13bSMingming Cao if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) 295617ba13bSMingming Cao err = ext4_change_inode_journal_flag(inode, jflag); 2964db46fc2SAneesh Kumar K.V if (err) 2974db46fc2SAneesh Kumar K.V goto flags_out; 298996bb9fdSTheodore Ts'o if (migrate) { 299996bb9fdSTheodore Ts'o if (flags & EXT4_EXTENTS_FL) 3004db46fc2SAneesh Kumar K.V err = ext4_ext_migrate(inode); 301996bb9fdSTheodore Ts'o else 302996bb9fdSTheodore Ts'o err = ext4_ind_migrate(inode); 303996bb9fdSTheodore Ts'o } 304996bb9fdSTheodore Ts'o 30542a74f20SDave Hansen flags_out: 3069b7365fcSLi Xi return err; 3079b7365fcSLi Xi } 3089b7365fcSLi Xi 3099b7365fcSLi Xi #ifdef CONFIG_QUOTA 3109b7365fcSLi Xi static int ext4_ioctl_setproject(struct file *filp, __u32 projid) 3119b7365fcSLi Xi { 3129b7365fcSLi Xi struct inode *inode = file_inode(filp); 3139b7365fcSLi Xi struct super_block *sb = inode->i_sb; 3149b7365fcSLi Xi struct ext4_inode_info *ei = EXT4_I(inode); 3159b7365fcSLi Xi int err, rc; 3169b7365fcSLi Xi handle_t *handle; 3179b7365fcSLi Xi kprojid_t kprojid; 3189b7365fcSLi Xi struct ext4_iloc iloc; 3199b7365fcSLi Xi struct ext4_inode *raw_inode; 320079788d0SWang Shilong struct dquot *transfer_to[MAXQUOTAS] = { }; 3219b7365fcSLi Xi 3220b7b7779SKaho Ng if (!ext4_has_feature_project(sb)) { 3239b7365fcSLi Xi if (projid != EXT4_DEF_PROJID) 3249b7365fcSLi Xi return -EOPNOTSUPP; 3259b7365fcSLi Xi else 3269b7365fcSLi Xi return 0; 3279b7365fcSLi Xi } 3289b7365fcSLi Xi 3299b7365fcSLi Xi if (EXT4_INODE_SIZE(sb) <= EXT4_GOOD_OLD_INODE_SIZE) 3309b7365fcSLi Xi return -EOPNOTSUPP; 3319b7365fcSLi Xi 3329b7365fcSLi Xi kprojid = make_kprojid(&init_user_ns, (projid_t)projid); 3339b7365fcSLi Xi 3349b7365fcSLi Xi if (projid_eq(kprojid, EXT4_I(inode)->i_projid)) 3359b7365fcSLi Xi return 0; 3369b7365fcSLi Xi 3379b7365fcSLi Xi err = mnt_want_write_file(filp); 3389b7365fcSLi Xi if (err) 3399b7365fcSLi Xi return err; 3409b7365fcSLi Xi 3419b7365fcSLi Xi err = -EPERM; 3425955102cSAl Viro inode_lock(inode); 3439b7365fcSLi Xi /* Is it quota file? Do not allow user to mess with it */ 34402749a4cSTahsin Erdogan if (ext4_is_quota_file(inode)) 3459b7365fcSLi Xi goto out_unlock; 3469b7365fcSLi Xi 3479b7365fcSLi Xi err = ext4_get_inode_loc(inode, &iloc); 3489b7365fcSLi Xi if (err) 3499b7365fcSLi Xi goto out_unlock; 3509b7365fcSLi Xi 3519b7365fcSLi Xi raw_inode = ext4_raw_inode(&iloc); 3529b7365fcSLi Xi if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) { 353c03b45b8SMiao Xie err = ext4_expand_extra_isize(inode, 354c03b45b8SMiao Xie EXT4_SB(sb)->s_want_extra_isize, 355c03b45b8SMiao Xie &iloc); 356c03b45b8SMiao Xie if (err) 3579b7365fcSLi Xi goto out_unlock; 358c03b45b8SMiao Xie } else { 3599b7365fcSLi Xi brelse(iloc.bh); 360c03b45b8SMiao Xie } 3619b7365fcSLi Xi 3629b7365fcSLi Xi dquot_initialize(inode); 3639b7365fcSLi Xi 3649b7365fcSLi Xi handle = ext4_journal_start(inode, EXT4_HT_QUOTA, 3659b7365fcSLi Xi EXT4_QUOTA_INIT_BLOCKS(sb) + 3669b7365fcSLi Xi EXT4_QUOTA_DEL_BLOCKS(sb) + 3); 3679b7365fcSLi Xi if (IS_ERR(handle)) { 3689b7365fcSLi Xi err = PTR_ERR(handle); 3699b7365fcSLi Xi goto out_unlock; 3709b7365fcSLi Xi } 3719b7365fcSLi Xi 3729b7365fcSLi Xi err = ext4_reserve_inode_write(handle, inode, &iloc); 3739b7365fcSLi Xi if (err) 3749b7365fcSLi Xi goto out_stop; 3759b7365fcSLi Xi 3769b7365fcSLi Xi transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); 377ff0bc084SSeth Forshee if (!IS_ERR(transfer_to[PRJQUOTA])) { 3787a9ca53aSTahsin Erdogan 3797a9ca53aSTahsin Erdogan /* __dquot_transfer() calls back ext4_get_inode_usage() which 3807a9ca53aSTahsin Erdogan * counts xattr inode references. 3817a9ca53aSTahsin Erdogan */ 3827a9ca53aSTahsin Erdogan down_read(&EXT4_I(inode)->xattr_sem); 3839b7365fcSLi Xi err = __dquot_transfer(inode, transfer_to); 3847a9ca53aSTahsin Erdogan up_read(&EXT4_I(inode)->xattr_sem); 3859b7365fcSLi Xi dqput(transfer_to[PRJQUOTA]); 3869b7365fcSLi Xi if (err) 3879b7365fcSLi Xi goto out_dirty; 3889b7365fcSLi Xi } 389079788d0SWang Shilong 3909b7365fcSLi Xi EXT4_I(inode)->i_projid = kprojid; 391eeca7ea1SDeepa Dinamani inode->i_ctime = current_time(inode); 3929b7365fcSLi Xi out_dirty: 3939b7365fcSLi Xi rc = ext4_mark_iloc_dirty(handle, inode, &iloc); 3949b7365fcSLi Xi if (!err) 3959b7365fcSLi Xi err = rc; 3969b7365fcSLi Xi out_stop: 3979b7365fcSLi Xi ext4_journal_stop(handle); 3989b7365fcSLi Xi out_unlock: 3995955102cSAl Viro inode_unlock(inode); 4009b7365fcSLi Xi mnt_drop_write_file(filp); 4019b7365fcSLi Xi return err; 4029b7365fcSLi Xi } 4039b7365fcSLi Xi #else 4049b7365fcSLi Xi static int ext4_ioctl_setproject(struct file *filp, __u32 projid) 4059b7365fcSLi Xi { 4069b7365fcSLi Xi if (projid != EXT4_DEF_PROJID) 4079b7365fcSLi Xi return -EOPNOTSUPP; 4089b7365fcSLi Xi return 0; 4099b7365fcSLi Xi } 4109b7365fcSLi Xi #endif 4119b7365fcSLi Xi 4129b7365fcSLi Xi /* Transfer internal flags to xflags */ 4139b7365fcSLi Xi static inline __u32 ext4_iflags_to_xflags(unsigned long iflags) 4149b7365fcSLi Xi { 4159b7365fcSLi Xi __u32 xflags = 0; 4169b7365fcSLi Xi 4179b7365fcSLi Xi if (iflags & EXT4_SYNC_FL) 4189b7365fcSLi Xi xflags |= FS_XFLAG_SYNC; 4199b7365fcSLi Xi if (iflags & EXT4_IMMUTABLE_FL) 4209b7365fcSLi Xi xflags |= FS_XFLAG_IMMUTABLE; 4219b7365fcSLi Xi if (iflags & EXT4_APPEND_FL) 4229b7365fcSLi Xi xflags |= FS_XFLAG_APPEND; 4239b7365fcSLi Xi if (iflags & EXT4_NODUMP_FL) 4249b7365fcSLi Xi xflags |= FS_XFLAG_NODUMP; 4259b7365fcSLi Xi if (iflags & EXT4_NOATIME_FL) 4269b7365fcSLi Xi xflags |= FS_XFLAG_NOATIME; 4279b7365fcSLi Xi if (iflags & EXT4_PROJINHERIT_FL) 4289b7365fcSLi Xi xflags |= FS_XFLAG_PROJINHERIT; 4299b7365fcSLi Xi return xflags; 4309b7365fcSLi Xi } 4319b7365fcSLi Xi 432d14e7683SJan Kara #define EXT4_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \ 433d14e7683SJan Kara FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \ 434d14e7683SJan Kara FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT) 435d14e7683SJan Kara 4369b7365fcSLi Xi /* Transfer xflags flags to internal */ 4379b7365fcSLi Xi static inline unsigned long ext4_xflags_to_iflags(__u32 xflags) 4389b7365fcSLi Xi { 4399b7365fcSLi Xi unsigned long iflags = 0; 4409b7365fcSLi Xi 4419b7365fcSLi Xi if (xflags & FS_XFLAG_SYNC) 4429b7365fcSLi Xi iflags |= EXT4_SYNC_FL; 4439b7365fcSLi Xi if (xflags & FS_XFLAG_IMMUTABLE) 4449b7365fcSLi Xi iflags |= EXT4_IMMUTABLE_FL; 4459b7365fcSLi Xi if (xflags & FS_XFLAG_APPEND) 4469b7365fcSLi Xi iflags |= EXT4_APPEND_FL; 4479b7365fcSLi Xi if (xflags & FS_XFLAG_NODUMP) 4489b7365fcSLi Xi iflags |= EXT4_NODUMP_FL; 4499b7365fcSLi Xi if (xflags & FS_XFLAG_NOATIME) 4509b7365fcSLi Xi iflags |= EXT4_NOATIME_FL; 4519b7365fcSLi Xi if (xflags & FS_XFLAG_PROJINHERIT) 4529b7365fcSLi Xi iflags |= EXT4_PROJINHERIT_FL; 4539b7365fcSLi Xi 4549b7365fcSLi Xi return iflags; 4559b7365fcSLi Xi } 4569b7365fcSLi Xi 4571a20a630SEric Biggers static int ext4_shutdown(struct super_block *sb, unsigned long arg) 458783d9485STheodore Ts'o { 459783d9485STheodore Ts'o struct ext4_sb_info *sbi = EXT4_SB(sb); 460783d9485STheodore Ts'o __u32 flags; 461783d9485STheodore Ts'o 462783d9485STheodore Ts'o if (!capable(CAP_SYS_ADMIN)) 463783d9485STheodore Ts'o return -EPERM; 464783d9485STheodore Ts'o 465783d9485STheodore Ts'o if (get_user(flags, (__u32 __user *)arg)) 466783d9485STheodore Ts'o return -EFAULT; 467783d9485STheodore Ts'o 468783d9485STheodore Ts'o if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH) 469783d9485STheodore Ts'o return -EINVAL; 470783d9485STheodore Ts'o 471783d9485STheodore Ts'o if (ext4_forced_shutdown(sbi)) 472783d9485STheodore Ts'o return 0; 473783d9485STheodore Ts'o 474783d9485STheodore Ts'o ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags); 475783d9485STheodore Ts'o 476783d9485STheodore Ts'o switch (flags) { 477783d9485STheodore Ts'o case EXT4_GOING_FLAGS_DEFAULT: 478783d9485STheodore Ts'o freeze_bdev(sb->s_bdev); 479783d9485STheodore Ts'o set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 480783d9485STheodore Ts'o thaw_bdev(sb->s_bdev, sb); 481783d9485STheodore Ts'o break; 482783d9485STheodore Ts'o case EXT4_GOING_FLAGS_LOGFLUSH: 483783d9485STheodore Ts'o set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 484783d9485STheodore Ts'o if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { 485783d9485STheodore Ts'o (void) ext4_force_commit(sb); 486783d9485STheodore Ts'o jbd2_journal_abort(sbi->s_journal, 0); 487783d9485STheodore Ts'o } 488783d9485STheodore Ts'o break; 489783d9485STheodore Ts'o case EXT4_GOING_FLAGS_NOLOGFLUSH: 490783d9485STheodore Ts'o set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 491783d9485STheodore Ts'o if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { 492783d9485STheodore Ts'o msleep(100); 493783d9485STheodore Ts'o jbd2_journal_abort(sbi->s_journal, 0); 494783d9485STheodore Ts'o } 495783d9485STheodore Ts'o break; 496783d9485STheodore Ts'o default: 497783d9485STheodore Ts'o return -EINVAL; 498783d9485STheodore Ts'o } 499783d9485STheodore Ts'o clear_opt(sb, DISCARD); 500783d9485STheodore Ts'o return 0; 501783d9485STheodore Ts'o } 502783d9485STheodore Ts'o 5030c9ec4beSDarrick J. Wong struct getfsmap_info { 5040c9ec4beSDarrick J. Wong struct super_block *gi_sb; 5050c9ec4beSDarrick J. Wong struct fsmap_head __user *gi_data; 5060c9ec4beSDarrick J. Wong unsigned int gi_idx; 5070c9ec4beSDarrick J. Wong __u32 gi_last_flags; 5080c9ec4beSDarrick J. Wong }; 5090c9ec4beSDarrick J. Wong 5100c9ec4beSDarrick J. Wong static int ext4_getfsmap_format(struct ext4_fsmap *xfm, void *priv) 5110c9ec4beSDarrick J. Wong { 5120c9ec4beSDarrick J. Wong struct getfsmap_info *info = priv; 5130c9ec4beSDarrick J. Wong struct fsmap fm; 5140c9ec4beSDarrick J. Wong 5150c9ec4beSDarrick J. Wong trace_ext4_getfsmap_mapping(info->gi_sb, xfm); 5160c9ec4beSDarrick J. Wong 5170c9ec4beSDarrick J. Wong info->gi_last_flags = xfm->fmr_flags; 5180c9ec4beSDarrick J. Wong ext4_fsmap_from_internal(info->gi_sb, &fm, xfm); 5190c9ec4beSDarrick J. Wong if (copy_to_user(&info->gi_data->fmh_recs[info->gi_idx++], &fm, 5200c9ec4beSDarrick J. Wong sizeof(struct fsmap))) 5210c9ec4beSDarrick J. Wong return -EFAULT; 5220c9ec4beSDarrick J. Wong 5230c9ec4beSDarrick J. Wong return 0; 5240c9ec4beSDarrick J. Wong } 5250c9ec4beSDarrick J. Wong 5260c9ec4beSDarrick J. Wong static int ext4_ioc_getfsmap(struct super_block *sb, 5270c9ec4beSDarrick J. Wong struct fsmap_head __user *arg) 5280c9ec4beSDarrick J. Wong { 5290c9ec4beSDarrick J. Wong struct getfsmap_info info = {0}; 5300c9ec4beSDarrick J. Wong struct ext4_fsmap_head xhead = {0}; 5310c9ec4beSDarrick J. Wong struct fsmap_head head; 5320c9ec4beSDarrick J. Wong bool aborted = false; 5330c9ec4beSDarrick J. Wong int error; 5340c9ec4beSDarrick J. Wong 5350c9ec4beSDarrick J. Wong if (copy_from_user(&head, arg, sizeof(struct fsmap_head))) 5360c9ec4beSDarrick J. Wong return -EFAULT; 5370c9ec4beSDarrick J. Wong if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) || 5380c9ec4beSDarrick J. Wong memchr_inv(head.fmh_keys[0].fmr_reserved, 0, 5390c9ec4beSDarrick J. Wong sizeof(head.fmh_keys[0].fmr_reserved)) || 5400c9ec4beSDarrick J. Wong memchr_inv(head.fmh_keys[1].fmr_reserved, 0, 5410c9ec4beSDarrick J. Wong sizeof(head.fmh_keys[1].fmr_reserved))) 5420c9ec4beSDarrick J. Wong return -EINVAL; 5430c9ec4beSDarrick J. Wong /* 5440c9ec4beSDarrick J. Wong * ext4 doesn't report file extents at all, so the only valid 5450c9ec4beSDarrick J. Wong * file offsets are the magic ones (all zeroes or all ones). 5460c9ec4beSDarrick J. Wong */ 5470c9ec4beSDarrick J. Wong if (head.fmh_keys[0].fmr_offset || 5480c9ec4beSDarrick J. Wong (head.fmh_keys[1].fmr_offset != 0 && 5490c9ec4beSDarrick J. Wong head.fmh_keys[1].fmr_offset != -1ULL)) 5500c9ec4beSDarrick J. Wong return -EINVAL; 5510c9ec4beSDarrick J. Wong 5520c9ec4beSDarrick J. Wong xhead.fmh_iflags = head.fmh_iflags; 5530c9ec4beSDarrick J. Wong xhead.fmh_count = head.fmh_count; 5540c9ec4beSDarrick J. Wong ext4_fsmap_to_internal(sb, &xhead.fmh_keys[0], &head.fmh_keys[0]); 5550c9ec4beSDarrick J. Wong ext4_fsmap_to_internal(sb, &xhead.fmh_keys[1], &head.fmh_keys[1]); 5560c9ec4beSDarrick J. Wong 5570c9ec4beSDarrick J. Wong trace_ext4_getfsmap_low_key(sb, &xhead.fmh_keys[0]); 5580c9ec4beSDarrick J. Wong trace_ext4_getfsmap_high_key(sb, &xhead.fmh_keys[1]); 5590c9ec4beSDarrick J. Wong 5600c9ec4beSDarrick J. Wong info.gi_sb = sb; 5610c9ec4beSDarrick J. Wong info.gi_data = arg; 5620c9ec4beSDarrick J. Wong error = ext4_getfsmap(sb, &xhead, ext4_getfsmap_format, &info); 5630c9ec4beSDarrick J. Wong if (error == EXT4_QUERY_RANGE_ABORT) { 5640c9ec4beSDarrick J. Wong error = 0; 5650c9ec4beSDarrick J. Wong aborted = true; 5660c9ec4beSDarrick J. Wong } else if (error) 5670c9ec4beSDarrick J. Wong return error; 5680c9ec4beSDarrick J. Wong 5690c9ec4beSDarrick J. Wong /* If we didn't abort, set the "last" flag in the last fmx */ 5700c9ec4beSDarrick J. Wong if (!aborted && info.gi_idx) { 5710c9ec4beSDarrick J. Wong info.gi_last_flags |= FMR_OF_LAST; 5720c9ec4beSDarrick J. Wong if (copy_to_user(&info.gi_data->fmh_recs[info.gi_idx - 1].fmr_flags, 5730c9ec4beSDarrick J. Wong &info.gi_last_flags, 5740c9ec4beSDarrick J. Wong sizeof(info.gi_last_flags))) 5750c9ec4beSDarrick J. Wong return -EFAULT; 5760c9ec4beSDarrick J. Wong } 5770c9ec4beSDarrick J. Wong 5780c9ec4beSDarrick J. Wong /* copy back header */ 5790c9ec4beSDarrick J. Wong head.fmh_entries = xhead.fmh_entries; 5800c9ec4beSDarrick J. Wong head.fmh_oflags = xhead.fmh_oflags; 5810c9ec4beSDarrick J. Wong if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) 5820c9ec4beSDarrick J. Wong return -EFAULT; 5830c9ec4beSDarrick J. Wong 5840c9ec4beSDarrick J. Wong return 0; 5850c9ec4beSDarrick J. Wong } 5860c9ec4beSDarrick J. Wong 5879b7365fcSLi Xi long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 5889b7365fcSLi Xi { 5899b7365fcSLi Xi struct inode *inode = file_inode(filp); 5909b7365fcSLi Xi struct super_block *sb = inode->i_sb; 5919b7365fcSLi Xi struct ext4_inode_info *ei = EXT4_I(inode); 5929b7365fcSLi Xi unsigned int flags; 5939b7365fcSLi Xi 5949b7365fcSLi Xi ext4_debug("cmd = %u, arg = %lu\n", cmd, arg); 5959b7365fcSLi Xi 5969b7365fcSLi Xi switch (cmd) { 5970c9ec4beSDarrick J. Wong case FS_IOC_GETFSMAP: 5980c9ec4beSDarrick J. Wong return ext4_ioc_getfsmap(sb, (void __user *)arg); 5999b7365fcSLi Xi case EXT4_IOC_GETFLAGS: 6009b7365fcSLi Xi flags = ei->i_flags & EXT4_FL_USER_VISIBLE; 6019b7365fcSLi Xi return put_user(flags, (int __user *) arg); 6029b7365fcSLi Xi case EXT4_IOC_SETFLAGS: { 6039b7365fcSLi Xi int err; 6049b7365fcSLi Xi 6059b7365fcSLi Xi if (!inode_owner_or_capable(inode)) 6069b7365fcSLi Xi return -EACCES; 6079b7365fcSLi Xi 6089b7365fcSLi Xi if (get_user(flags, (int __user *) arg)) 6099b7365fcSLi Xi return -EFAULT; 6109b7365fcSLi Xi 611d14e7683SJan Kara if (flags & ~EXT4_FL_USER_VISIBLE) 612d14e7683SJan Kara return -EOPNOTSUPP; 613d14e7683SJan Kara /* 614d14e7683SJan Kara * chattr(1) grabs flags via GETFLAGS, modifies the result and 615d14e7683SJan Kara * passes that to SETFLAGS. So we cannot easily make SETFLAGS 616d14e7683SJan Kara * more restrictive than just silently masking off visible but 617d14e7683SJan Kara * not settable flags as we always did. 618d14e7683SJan Kara */ 619d14e7683SJan Kara flags &= EXT4_FL_USER_MODIFIABLE; 620d14e7683SJan Kara if (ext4_mask_flags(inode->i_mode, flags) != flags) 621d14e7683SJan Kara return -EOPNOTSUPP; 622d14e7683SJan Kara 6239b7365fcSLi Xi err = mnt_want_write_file(filp); 6249b7365fcSLi Xi if (err) 6259b7365fcSLi Xi return err; 6269b7365fcSLi Xi 6275955102cSAl Viro inode_lock(inode); 6289b7365fcSLi Xi err = ext4_ioctl_setflags(inode, flags); 6295955102cSAl Viro inode_unlock(inode); 6302a79f17eSAl Viro mnt_drop_write_file(filp); 631ac27a0ecSDave Kleikamp return err; 632ac27a0ecSDave Kleikamp } 633617ba13bSMingming Cao case EXT4_IOC_GETVERSION: 634617ba13bSMingming Cao case EXT4_IOC_GETVERSION_OLD: 635ac27a0ecSDave Kleikamp return put_user(inode->i_generation, (int __user *) arg); 636617ba13bSMingming Cao case EXT4_IOC_SETVERSION: 637617ba13bSMingming Cao case EXT4_IOC_SETVERSION_OLD: { 638ac27a0ecSDave Kleikamp handle_t *handle; 639617ba13bSMingming Cao struct ext4_iloc iloc; 640ac27a0ecSDave Kleikamp __u32 generation; 641ac27a0ecSDave Kleikamp int err; 642ac27a0ecSDave Kleikamp 6432e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 644ac27a0ecSDave Kleikamp return -EPERM; 64542a74f20SDave Hansen 6469aa5d32bSDmitry Monakhov if (ext4_has_metadata_csum(inode->i_sb)) { 647814525f4SDarrick J. Wong ext4_warning(sb, "Setting inode version is not " 648814525f4SDarrick J. Wong "supported with metadata_csum enabled."); 649814525f4SDarrick J. Wong return -ENOTTY; 650814525f4SDarrick J. Wong } 651814525f4SDarrick J. Wong 652a561be71SAl Viro err = mnt_want_write_file(filp); 65342a74f20SDave Hansen if (err) 65442a74f20SDave Hansen return err; 65542a74f20SDave Hansen if (get_user(generation, (int __user *) arg)) { 65642a74f20SDave Hansen err = -EFAULT; 65742a74f20SDave Hansen goto setversion_out; 65842a74f20SDave Hansen } 659ac27a0ecSDave Kleikamp 6605955102cSAl Viro inode_lock(inode); 6619924a92aSTheodore Ts'o handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 66242a74f20SDave Hansen if (IS_ERR(handle)) { 66342a74f20SDave Hansen err = PTR_ERR(handle); 6646c2155b9SDjalal Harouni goto unlock_out; 66542a74f20SDave Hansen } 666617ba13bSMingming Cao err = ext4_reserve_inode_write(handle, inode, &iloc); 667ac27a0ecSDave Kleikamp if (err == 0) { 668eeca7ea1SDeepa Dinamani inode->i_ctime = current_time(inode); 669ac27a0ecSDave Kleikamp inode->i_generation = generation; 670617ba13bSMingming Cao err = ext4_mark_iloc_dirty(handle, inode, &iloc); 671ac27a0ecSDave Kleikamp } 672617ba13bSMingming Cao ext4_journal_stop(handle); 6736c2155b9SDjalal Harouni 6746c2155b9SDjalal Harouni unlock_out: 6755955102cSAl Viro inode_unlock(inode); 67642a74f20SDave Hansen setversion_out: 6772a79f17eSAl Viro mnt_drop_write_file(filp); 678ac27a0ecSDave Kleikamp return err; 679ac27a0ecSDave Kleikamp } 680617ba13bSMingming Cao case EXT4_IOC_GROUP_EXTEND: { 681617ba13bSMingming Cao ext4_fsblk_t n_blocks_count; 682ac046f1dSPeng Tao int err, err2=0; 683ac27a0ecSDave Kleikamp 6848f82f840SYongqiang Yang err = ext4_resize_begin(sb); 6858f82f840SYongqiang Yang if (err) 6868f82f840SYongqiang Yang return err; 687ac27a0ecSDave Kleikamp 688014a1770SDjalal Harouni if (get_user(n_blocks_count, (__u32 __user *)arg)) { 689014a1770SDjalal Harouni err = -EFAULT; 690014a1770SDjalal Harouni goto group_extend_out; 691014a1770SDjalal Harouni } 692ac27a0ecSDave Kleikamp 693e2b911c5SDarrick J. Wong if (ext4_has_feature_bigalloc(sb)) { 694bab08ab9STheodore Ts'o ext4_msg(sb, KERN_ERR, 695bab08ab9STheodore Ts'o "Online resizing not supported with bigalloc"); 696014a1770SDjalal Harouni err = -EOPNOTSUPP; 697014a1770SDjalal Harouni goto group_extend_out; 698bab08ab9STheodore Ts'o } 699bab08ab9STheodore Ts'o 700a561be71SAl Viro err = mnt_want_write_file(filp); 70142a74f20SDave Hansen if (err) 702014a1770SDjalal Harouni goto group_extend_out; 70342a74f20SDave Hansen 704617ba13bSMingming Cao err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count); 705ac046f1dSPeng Tao if (EXT4_SB(sb)->s_journal) { 706dab291afSMingming Cao jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 7077ffe1ea8SHidehiro Kawai err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 708dab291afSMingming Cao jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 709ac046f1dSPeng Tao } 7107ffe1ea8SHidehiro Kawai if (err == 0) 7117ffe1ea8SHidehiro Kawai err = err2; 7122a79f17eSAl Viro mnt_drop_write_file(filp); 713014a1770SDjalal Harouni group_extend_out: 7148f82f840SYongqiang Yang ext4_resize_end(sb); 715ac27a0ecSDave Kleikamp return err; 716ac27a0ecSDave Kleikamp } 717748de673SAkira Fujita 718748de673SAkira Fujita case EXT4_IOC_MOVE_EXT: { 719748de673SAkira Fujita struct move_extent me; 7202903ff01SAl Viro struct fd donor; 7212903ff01SAl Viro int err; 722748de673SAkira Fujita 7234a58579bSAkira Fujita if (!(filp->f_mode & FMODE_READ) || 7244a58579bSAkira Fujita !(filp->f_mode & FMODE_WRITE)) 7254a58579bSAkira Fujita return -EBADF; 7264a58579bSAkira Fujita 727748de673SAkira Fujita if (copy_from_user(&me, 728748de673SAkira Fujita (struct move_extent __user *)arg, sizeof(me))) 729748de673SAkira Fujita return -EFAULT; 7304a58579bSAkira Fujita me.moved_len = 0; 731748de673SAkira Fujita 7322903ff01SAl Viro donor = fdget(me.donor_fd); 7332903ff01SAl Viro if (!donor.file) 734748de673SAkira Fujita return -EBADF; 735748de673SAkira Fujita 7362903ff01SAl Viro if (!(donor.file->f_mode & FMODE_WRITE)) { 7374a58579bSAkira Fujita err = -EBADF; 7384a58579bSAkira Fujita goto mext_out; 739748de673SAkira Fujita } 740748de673SAkira Fujita 741e2b911c5SDarrick J. Wong if (ext4_has_feature_bigalloc(sb)) { 742bab08ab9STheodore Ts'o ext4_msg(sb, KERN_ERR, 743bab08ab9STheodore Ts'o "Online defrag not supported with bigalloc"); 744399c9b86SAl Viro err = -EOPNOTSUPP; 745399c9b86SAl Viro goto mext_out; 74673f34a5eSRoss Zwisler } else if (IS_DAX(inode)) { 74773f34a5eSRoss Zwisler ext4_msg(sb, KERN_ERR, 74873f34a5eSRoss Zwisler "Online defrag not supported with DAX"); 74973f34a5eSRoss Zwisler err = -EOPNOTSUPP; 75073f34a5eSRoss Zwisler goto mext_out; 751bab08ab9STheodore Ts'o } 752bab08ab9STheodore Ts'o 753a561be71SAl Viro err = mnt_want_write_file(filp); 7544a58579bSAkira Fujita if (err) 7554a58579bSAkira Fujita goto mext_out; 7564a58579bSAkira Fujita 7572903ff01SAl Viro err = ext4_move_extents(filp, donor.file, me.orig_start, 758748de673SAkira Fujita me.donor_start, me.len, &me.moved_len); 7592a79f17eSAl Viro mnt_drop_write_file(filp); 760748de673SAkira Fujita 761c437b273SAkira Fujita if (copy_to_user((struct move_extent __user *)arg, 762c437b273SAkira Fujita &me, sizeof(me))) 7634a58579bSAkira Fujita err = -EFAULT; 7644a58579bSAkira Fujita mext_out: 7652903ff01SAl Viro fdput(donor); 766748de673SAkira Fujita return err; 767748de673SAkira Fujita } 768748de673SAkira Fujita 769617ba13bSMingming Cao case EXT4_IOC_GROUP_ADD: { 770617ba13bSMingming Cao struct ext4_new_group_data input; 771ac046f1dSPeng Tao int err, err2=0; 772ac27a0ecSDave Kleikamp 7738f82f840SYongqiang Yang err = ext4_resize_begin(sb); 7748f82f840SYongqiang Yang if (err) 7758f82f840SYongqiang Yang return err; 776ac27a0ecSDave Kleikamp 777617ba13bSMingming Cao if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg, 778014a1770SDjalal Harouni sizeof(input))) { 779014a1770SDjalal Harouni err = -EFAULT; 780014a1770SDjalal Harouni goto group_add_out; 781014a1770SDjalal Harouni } 782ac27a0ecSDave Kleikamp 783e2b911c5SDarrick J. Wong if (ext4_has_feature_bigalloc(sb)) { 784bab08ab9STheodore Ts'o ext4_msg(sb, KERN_ERR, 785bab08ab9STheodore Ts'o "Online resizing not supported with bigalloc"); 786014a1770SDjalal Harouni err = -EOPNOTSUPP; 787014a1770SDjalal Harouni goto group_add_out; 788bab08ab9STheodore Ts'o } 789bab08ab9STheodore Ts'o 790a561be71SAl Viro err = mnt_want_write_file(filp); 79142a74f20SDave Hansen if (err) 792014a1770SDjalal Harouni goto group_add_out; 79342a74f20SDave Hansen 794617ba13bSMingming Cao err = ext4_group_add(sb, &input); 795ac046f1dSPeng Tao if (EXT4_SB(sb)->s_journal) { 796dab291afSMingming Cao jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 7977ffe1ea8SHidehiro Kawai err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 798dab291afSMingming Cao jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 799ac046f1dSPeng Tao } 8007ffe1ea8SHidehiro Kawai if (err == 0) 8017ffe1ea8SHidehiro Kawai err = err2; 8022a79f17eSAl Viro mnt_drop_write_file(filp); 8037f511862STheodore Ts'o if (!err && ext4_has_group_desc_csum(sb) && 8047f511862STheodore Ts'o test_opt(sb, INIT_INODE_TABLE)) 8057f511862STheodore Ts'o err = ext4_register_li_request(sb, input.group); 806014a1770SDjalal Harouni group_add_out: 8078f82f840SYongqiang Yang ext4_resize_end(sb); 808ac27a0ecSDave Kleikamp return err; 809ac27a0ecSDave Kleikamp } 810ac27a0ecSDave Kleikamp 811c14c6fd5SAneesh Kumar K.V case EXT4_IOC_MIGRATE: 8122a43a878SAneesh Kumar K.V { 8132a43a878SAneesh Kumar K.V int err; 8142e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 8152a43a878SAneesh Kumar K.V return -EACCES; 8162a43a878SAneesh Kumar K.V 817a561be71SAl Viro err = mnt_want_write_file(filp); 8182a43a878SAneesh Kumar K.V if (err) 8192a43a878SAneesh Kumar K.V return err; 8202a43a878SAneesh Kumar K.V /* 8212a43a878SAneesh Kumar K.V * inode_mutex prevent write and truncate on the file. 8222a43a878SAneesh Kumar K.V * Read still goes through. We take i_data_sem in 8232a43a878SAneesh Kumar K.V * ext4_ext_swap_inode_data before we switch the 8242a43a878SAneesh Kumar K.V * inode format to prevent read. 8252a43a878SAneesh Kumar K.V */ 8265955102cSAl Viro inode_lock((inode)); 8272a43a878SAneesh Kumar K.V err = ext4_ext_migrate(inode); 8285955102cSAl Viro inode_unlock((inode)); 8292a79f17eSAl Viro mnt_drop_write_file(filp); 8302a43a878SAneesh Kumar K.V return err; 8312a43a878SAneesh Kumar K.V } 832c14c6fd5SAneesh Kumar K.V 833ccd2506bSTheodore Ts'o case EXT4_IOC_ALLOC_DA_BLKS: 834ccd2506bSTheodore Ts'o { 835ccd2506bSTheodore Ts'o int err; 8362e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 837ccd2506bSTheodore Ts'o return -EACCES; 838ccd2506bSTheodore Ts'o 839a561be71SAl Viro err = mnt_want_write_file(filp); 840ccd2506bSTheodore Ts'o if (err) 841ccd2506bSTheodore Ts'o return err; 842ccd2506bSTheodore Ts'o err = ext4_alloc_da_blocks(inode); 8432a79f17eSAl Viro mnt_drop_write_file(filp); 844ccd2506bSTheodore Ts'o return err; 845ccd2506bSTheodore Ts'o } 846ccd2506bSTheodore Ts'o 847393d1d1dSDr. Tilmann Bubeck case EXT4_IOC_SWAP_BOOT: 8483e67cfadSDmitry Monakhov { 8493e67cfadSDmitry Monakhov int err; 850393d1d1dSDr. Tilmann Bubeck if (!(filp->f_mode & FMODE_WRITE)) 851393d1d1dSDr. Tilmann Bubeck return -EBADF; 8523e67cfadSDmitry Monakhov err = mnt_want_write_file(filp); 8533e67cfadSDmitry Monakhov if (err) 8543e67cfadSDmitry Monakhov return err; 8553e67cfadSDmitry Monakhov err = swap_inode_boot_loader(sb, inode); 8563e67cfadSDmitry Monakhov mnt_drop_write_file(filp); 8573e67cfadSDmitry Monakhov return err; 8583e67cfadSDmitry Monakhov } 859393d1d1dSDr. Tilmann Bubeck 86019c5246dSYongqiang Yang case EXT4_IOC_RESIZE_FS: { 86119c5246dSYongqiang Yang ext4_fsblk_t n_blocks_count; 86219c5246dSYongqiang Yang int err = 0, err2 = 0; 8637f511862STheodore Ts'o ext4_group_t o_group = EXT4_SB(sb)->s_groups_count; 86419c5246dSYongqiang Yang 865e2b911c5SDarrick J. Wong if (ext4_has_feature_bigalloc(sb)) { 86619c5246dSYongqiang Yang ext4_msg(sb, KERN_ERR, 86719c5246dSYongqiang Yang "Online resizing not (yet) supported with bigalloc"); 86819c5246dSYongqiang Yang return -EOPNOTSUPP; 86919c5246dSYongqiang Yang } 87019c5246dSYongqiang Yang 87119c5246dSYongqiang Yang if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, 87219c5246dSYongqiang Yang sizeof(__u64))) { 87319c5246dSYongqiang Yang return -EFAULT; 87419c5246dSYongqiang Yang } 87519c5246dSYongqiang Yang 87619c5246dSYongqiang Yang err = ext4_resize_begin(sb); 87719c5246dSYongqiang Yang if (err) 87819c5246dSYongqiang Yang return err; 87919c5246dSYongqiang Yang 8808cae6f71SAl Viro err = mnt_want_write_file(filp); 88119c5246dSYongqiang Yang if (err) 88219c5246dSYongqiang Yang goto resizefs_out; 88319c5246dSYongqiang Yang 88419c5246dSYongqiang Yang err = ext4_resize_fs(sb, n_blocks_count); 88519c5246dSYongqiang Yang if (EXT4_SB(sb)->s_journal) { 88619c5246dSYongqiang Yang jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 88719c5246dSYongqiang Yang err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 88819c5246dSYongqiang Yang jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 88919c5246dSYongqiang Yang } 89019c5246dSYongqiang Yang if (err == 0) 89119c5246dSYongqiang Yang err = err2; 8928cae6f71SAl Viro mnt_drop_write_file(filp); 8937f511862STheodore Ts'o if (!err && (o_group > EXT4_SB(sb)->s_groups_count) && 8947f511862STheodore Ts'o ext4_has_group_desc_csum(sb) && 8957f511862STheodore Ts'o test_opt(sb, INIT_INODE_TABLE)) 8967f511862STheodore Ts'o err = ext4_register_li_request(sb, o_group); 8977f511862STheodore Ts'o 89819c5246dSYongqiang Yang resizefs_out: 89919c5246dSYongqiang Yang ext4_resize_end(sb); 90019c5246dSYongqiang Yang return err; 90119c5246dSYongqiang Yang } 90219c5246dSYongqiang Yang 903e681c047SLukas Czerner case FITRIM: 904e681c047SLukas Czerner { 90541431792SLukas Czerner struct request_queue *q = bdev_get_queue(sb->s_bdev); 906e681c047SLukas Czerner struct fstrim_range range; 907e681c047SLukas Czerner int ret = 0; 908e681c047SLukas Czerner 909e681c047SLukas Czerner if (!capable(CAP_SYS_ADMIN)) 910e681c047SLukas Czerner return -EPERM; 911e681c047SLukas Czerner 91241431792SLukas Czerner if (!blk_queue_discard(q)) 91341431792SLukas Czerner return -EOPNOTSUPP; 91441431792SLukas Czerner 915e6705f7cSH Hartley Sweeten if (copy_from_user(&range, (struct fstrim_range __user *)arg, 916e681c047SLukas Czerner sizeof(range))) 917e681c047SLukas Czerner return -EFAULT; 918e681c047SLukas Czerner 9195c2ed62fSLukas Czerner range.minlen = max((unsigned int)range.minlen, 9205c2ed62fSLukas Czerner q->limits.discard_granularity); 921e681c047SLukas Czerner ret = ext4_trim_fs(sb, &range); 922e681c047SLukas Czerner if (ret < 0) 923e681c047SLukas Czerner return ret; 924e681c047SLukas Czerner 925e6705f7cSH Hartley Sweeten if (copy_to_user((struct fstrim_range __user *)arg, &range, 926e681c047SLukas Czerner sizeof(range))) 927e681c047SLukas Czerner return -EFAULT; 928e681c047SLukas Czerner 929e681c047SLukas Czerner return 0; 930e681c047SLukas Czerner } 9317869a4a6STheodore Ts'o case EXT4_IOC_PRECACHE_EXTENTS: 9327869a4a6STheodore Ts'o return ext4_ext_precache(inode); 933e681c047SLukas Czerner 934db717d8eSEric Biggers case EXT4_IOC_SET_ENCRYPTION_POLICY: 9359a200d07SRichard Weinberger if (!ext4_has_feature_encrypt(sb)) 9369a200d07SRichard Weinberger return -EOPNOTSUPP; 937db717d8eSEric Biggers return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); 9389a200d07SRichard Weinberger 9399bd8212fSMichael Halcrow case EXT4_IOC_GET_ENCRYPTION_PWSALT: { 940ba679017SEric Biggers #ifdef CONFIG_EXT4_FS_ENCRYPTION 9419bd8212fSMichael Halcrow int err, err2; 9429bd8212fSMichael Halcrow struct ext4_sb_info *sbi = EXT4_SB(sb); 9439bd8212fSMichael Halcrow handle_t *handle; 9449bd8212fSMichael Halcrow 94535997d1cSEric Biggers if (!ext4_has_feature_encrypt(sb)) 9469bd8212fSMichael Halcrow return -EOPNOTSUPP; 9479bd8212fSMichael Halcrow if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) { 9489bd8212fSMichael Halcrow err = mnt_want_write_file(filp); 9499bd8212fSMichael Halcrow if (err) 9509bd8212fSMichael Halcrow return err; 9519bd8212fSMichael Halcrow handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1); 9529bd8212fSMichael Halcrow if (IS_ERR(handle)) { 9539bd8212fSMichael Halcrow err = PTR_ERR(handle); 9549bd8212fSMichael Halcrow goto pwsalt_err_exit; 9559bd8212fSMichael Halcrow } 9569bd8212fSMichael Halcrow err = ext4_journal_get_write_access(handle, sbi->s_sbh); 9579bd8212fSMichael Halcrow if (err) 9589bd8212fSMichael Halcrow goto pwsalt_err_journal; 9599bd8212fSMichael Halcrow generate_random_uuid(sbi->s_es->s_encrypt_pw_salt); 9609bd8212fSMichael Halcrow err = ext4_handle_dirty_metadata(handle, NULL, 9619bd8212fSMichael Halcrow sbi->s_sbh); 9629bd8212fSMichael Halcrow pwsalt_err_journal: 9639bd8212fSMichael Halcrow err2 = ext4_journal_stop(handle); 9649bd8212fSMichael Halcrow if (err2 && !err) 9659bd8212fSMichael Halcrow err = err2; 9669bd8212fSMichael Halcrow pwsalt_err_exit: 9679bd8212fSMichael Halcrow mnt_drop_write_file(filp); 9689bd8212fSMichael Halcrow if (err) 9699bd8212fSMichael Halcrow return err; 9709bd8212fSMichael Halcrow } 971b4ab9e29SFabian Frederick if (copy_to_user((void __user *) arg, 972b4ab9e29SFabian Frederick sbi->s_es->s_encrypt_pw_salt, 16)) 9739bd8212fSMichael Halcrow return -EFAULT; 9749bd8212fSMichael Halcrow return 0; 975ba679017SEric Biggers #else 976ba679017SEric Biggers return -EOPNOTSUPP; 977ba679017SEric Biggers #endif 9789bd8212fSMichael Halcrow } 979db717d8eSEric Biggers case EXT4_IOC_GET_ENCRYPTION_POLICY: 980db717d8eSEric Biggers return fscrypt_ioctl_get_policy(filp, (void __user *)arg); 9819bd8212fSMichael Halcrow 9829b7365fcSLi Xi case EXT4_IOC_FSGETXATTR: 9839b7365fcSLi Xi { 9849b7365fcSLi Xi struct fsxattr fa; 9859b7365fcSLi Xi 9869b7365fcSLi Xi memset(&fa, 0, sizeof(struct fsxattr)); 9879b7365fcSLi Xi fa.fsx_xflags = ext4_iflags_to_xflags(ei->i_flags & EXT4_FL_USER_VISIBLE); 9889b7365fcSLi Xi 9890b7b7779SKaho Ng if (ext4_has_feature_project(inode->i_sb)) { 9909b7365fcSLi Xi fa.fsx_projid = (__u32)from_kprojid(&init_user_ns, 9919b7365fcSLi Xi EXT4_I(inode)->i_projid); 9929b7365fcSLi Xi } 9939b7365fcSLi Xi 9949b7365fcSLi Xi if (copy_to_user((struct fsxattr __user *)arg, 9959b7365fcSLi Xi &fa, sizeof(fa))) 9969b7365fcSLi Xi return -EFAULT; 9979b7365fcSLi Xi return 0; 9989b7365fcSLi Xi } 9999b7365fcSLi Xi case EXT4_IOC_FSSETXATTR: 10009b7365fcSLi Xi { 10019b7365fcSLi Xi struct fsxattr fa; 10029b7365fcSLi Xi int err; 10039b7365fcSLi Xi 10049b7365fcSLi Xi if (copy_from_user(&fa, (struct fsxattr __user *)arg, 10059b7365fcSLi Xi sizeof(fa))) 10069b7365fcSLi Xi return -EFAULT; 10079b7365fcSLi Xi 10089b7365fcSLi Xi /* Make sure caller has proper permission */ 10099b7365fcSLi Xi if (!inode_owner_or_capable(inode)) 10109b7365fcSLi Xi return -EACCES; 10119b7365fcSLi Xi 1012d14e7683SJan Kara if (fa.fsx_xflags & ~EXT4_SUPPORTED_FS_XFLAGS) 1013d14e7683SJan Kara return -EOPNOTSUPP; 1014d14e7683SJan Kara 1015d14e7683SJan Kara flags = ext4_xflags_to_iflags(fa.fsx_xflags); 1016d14e7683SJan Kara if (ext4_mask_flags(inode->i_mode, flags) != flags) 1017d14e7683SJan Kara return -EOPNOTSUPP; 1018d14e7683SJan Kara 10199b7365fcSLi Xi err = mnt_want_write_file(filp); 10209b7365fcSLi Xi if (err) 10219b7365fcSLi Xi return err; 10229b7365fcSLi Xi 10235955102cSAl Viro inode_lock(inode); 10249b7365fcSLi Xi flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) | 10259b7365fcSLi Xi (flags & EXT4_FL_XFLAG_VISIBLE); 10269b7365fcSLi Xi err = ext4_ioctl_setflags(inode, flags); 10275955102cSAl Viro inode_unlock(inode); 10289b7365fcSLi Xi mnt_drop_write_file(filp); 10299b7365fcSLi Xi if (err) 10309b7365fcSLi Xi return err; 10319b7365fcSLi Xi 10329b7365fcSLi Xi err = ext4_ioctl_setproject(filp, fa.fsx_projid); 10339b7365fcSLi Xi if (err) 10349b7365fcSLi Xi return err; 10359b7365fcSLi Xi 10369b7365fcSLi Xi return 0; 10379b7365fcSLi Xi } 1038e9be2ac7STheodore Ts'o case EXT4_IOC_SHUTDOWN: 1039e9be2ac7STheodore Ts'o return ext4_shutdown(sb, arg); 1040ac27a0ecSDave Kleikamp default: 1041ac27a0ecSDave Kleikamp return -ENOTTY; 1042ac27a0ecSDave Kleikamp } 1043ac27a0ecSDave Kleikamp } 1044ac27a0ecSDave Kleikamp 1045ac27a0ecSDave Kleikamp #ifdef CONFIG_COMPAT 1046617ba13bSMingming Cao long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 1047ac27a0ecSDave Kleikamp { 1048ac27a0ecSDave Kleikamp /* These are just misnamed, they actually get/put from/to user an int */ 1049ac27a0ecSDave Kleikamp switch (cmd) { 1050617ba13bSMingming Cao case EXT4_IOC32_GETFLAGS: 1051617ba13bSMingming Cao cmd = EXT4_IOC_GETFLAGS; 1052ac27a0ecSDave Kleikamp break; 1053617ba13bSMingming Cao case EXT4_IOC32_SETFLAGS: 1054617ba13bSMingming Cao cmd = EXT4_IOC_SETFLAGS; 1055ac27a0ecSDave Kleikamp break; 1056617ba13bSMingming Cao case EXT4_IOC32_GETVERSION: 1057617ba13bSMingming Cao cmd = EXT4_IOC_GETVERSION; 1058ac27a0ecSDave Kleikamp break; 1059617ba13bSMingming Cao case EXT4_IOC32_SETVERSION: 1060617ba13bSMingming Cao cmd = EXT4_IOC_SETVERSION; 1061ac27a0ecSDave Kleikamp break; 1062617ba13bSMingming Cao case EXT4_IOC32_GROUP_EXTEND: 1063617ba13bSMingming Cao cmd = EXT4_IOC_GROUP_EXTEND; 1064ac27a0ecSDave Kleikamp break; 1065617ba13bSMingming Cao case EXT4_IOC32_GETVERSION_OLD: 1066617ba13bSMingming Cao cmd = EXT4_IOC_GETVERSION_OLD; 1067ac27a0ecSDave Kleikamp break; 1068617ba13bSMingming Cao case EXT4_IOC32_SETVERSION_OLD: 1069617ba13bSMingming Cao cmd = EXT4_IOC_SETVERSION_OLD; 1070ac27a0ecSDave Kleikamp break; 1071617ba13bSMingming Cao case EXT4_IOC32_GETRSVSZ: 1072617ba13bSMingming Cao cmd = EXT4_IOC_GETRSVSZ; 1073ac27a0ecSDave Kleikamp break; 1074617ba13bSMingming Cao case EXT4_IOC32_SETRSVSZ: 1075617ba13bSMingming Cao cmd = EXT4_IOC_SETRSVSZ; 1076ac27a0ecSDave Kleikamp break; 10774d92dc0fSBen Hutchings case EXT4_IOC32_GROUP_ADD: { 10784d92dc0fSBen Hutchings struct compat_ext4_new_group_input __user *uinput; 10794d92dc0fSBen Hutchings struct ext4_new_group_input input; 10804d92dc0fSBen Hutchings mm_segment_t old_fs; 10814d92dc0fSBen Hutchings int err; 10824d92dc0fSBen Hutchings 10834d92dc0fSBen Hutchings uinput = compat_ptr(arg); 10844d92dc0fSBen Hutchings err = get_user(input.group, &uinput->group); 10854d92dc0fSBen Hutchings err |= get_user(input.block_bitmap, &uinput->block_bitmap); 10864d92dc0fSBen Hutchings err |= get_user(input.inode_bitmap, &uinput->inode_bitmap); 10874d92dc0fSBen Hutchings err |= get_user(input.inode_table, &uinput->inode_table); 10884d92dc0fSBen Hutchings err |= get_user(input.blocks_count, &uinput->blocks_count); 10894d92dc0fSBen Hutchings err |= get_user(input.reserved_blocks, 10904d92dc0fSBen Hutchings &uinput->reserved_blocks); 10914d92dc0fSBen Hutchings if (err) 10924d92dc0fSBen Hutchings return -EFAULT; 10934d92dc0fSBen Hutchings old_fs = get_fs(); 10944d92dc0fSBen Hutchings set_fs(KERNEL_DS); 10954d92dc0fSBen Hutchings err = ext4_ioctl(file, EXT4_IOC_GROUP_ADD, 10964d92dc0fSBen Hutchings (unsigned long) &input); 10974d92dc0fSBen Hutchings set_fs(old_fs); 10984d92dc0fSBen Hutchings return err; 10994d92dc0fSBen Hutchings } 1100b684b2eeSChristian Borntraeger case EXT4_IOC_MOVE_EXT: 110119c5246dSYongqiang Yang case EXT4_IOC_RESIZE_FS: 11027869a4a6STheodore Ts'o case EXT4_IOC_PRECACHE_EXTENTS: 11039bd8212fSMichael Halcrow case EXT4_IOC_SET_ENCRYPTION_POLICY: 11049bd8212fSMichael Halcrow case EXT4_IOC_GET_ENCRYPTION_PWSALT: 11059bd8212fSMichael Halcrow case EXT4_IOC_GET_ENCRYPTION_POLICY: 1106e9be2ac7STheodore Ts'o case EXT4_IOC_SHUTDOWN: 11070c9ec4beSDarrick J. Wong case FS_IOC_GETFSMAP: 1108b684b2eeSChristian Borntraeger break; 1109ac27a0ecSDave Kleikamp default: 1110ac27a0ecSDave Kleikamp return -ENOIOCTLCMD; 1111ac27a0ecSDave Kleikamp } 11125cdd7b2dSAndi Kleen return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); 1113ac27a0ecSDave Kleikamp } 1114ac27a0ecSDave Kleikamp #endif 1115