1ac27a0ecSDave Kleikamp /* 2617ba13bSMingming Cao * linux/fs/ext4/ioctl.c 3ac27a0ecSDave Kleikamp * 4ac27a0ecSDave Kleikamp * Copyright (C) 1993, 1994, 1995 5ac27a0ecSDave Kleikamp * Remy Card (card@masi.ibp.fr) 6ac27a0ecSDave Kleikamp * Laboratoire MASI - Institut Blaise Pascal 7ac27a0ecSDave Kleikamp * Universite Pierre et Marie Curie (Paris VI) 8ac27a0ecSDave Kleikamp */ 9ac27a0ecSDave Kleikamp 10ac27a0ecSDave Kleikamp #include <linux/fs.h> 11ac27a0ecSDave Kleikamp #include <linux/capability.h> 12ac27a0ecSDave Kleikamp #include <linux/time.h> 13ac27a0ecSDave Kleikamp #include <linux/compat.h> 1442a74f20SDave Hansen #include <linux/mount.h> 15748de673SAkira Fujita #include <linux/file.h> 169b7365fcSLi Xi #include <linux/quotaops.h> 178da4b8c4SAndy Shevchenko #include <linux/uuid.h> 187c0f6ba6SLinus Torvalds #include <linux/uaccess.h> 19783d9485STheodore Ts'o #include <linux/delay.h> 203dcf5451SChristoph Hellwig #include "ext4_jbd2.h" 213dcf5451SChristoph Hellwig #include "ext4.h" 220c9ec4beSDarrick J. Wong #include <linux/fsmap.h> 230c9ec4beSDarrick J. Wong #include "fsmap.h" 240c9ec4beSDarrick J. Wong #include <trace/events/ext4.h> 25ac27a0ecSDave Kleikamp 26393d1d1dSDr. Tilmann Bubeck /** 27393d1d1dSDr. Tilmann Bubeck * Swap memory between @a and @b for @len bytes. 28393d1d1dSDr. Tilmann Bubeck * 29393d1d1dSDr. Tilmann Bubeck * @a: pointer to first memory area 30393d1d1dSDr. Tilmann Bubeck * @b: pointer to second memory area 31393d1d1dSDr. Tilmann Bubeck * @len: number of bytes to swap 32393d1d1dSDr. Tilmann Bubeck * 33393d1d1dSDr. Tilmann Bubeck */ 34393d1d1dSDr. Tilmann Bubeck static void memswap(void *a, void *b, size_t len) 35393d1d1dSDr. Tilmann Bubeck { 36393d1d1dSDr. Tilmann Bubeck unsigned char *ap, *bp; 37393d1d1dSDr. Tilmann Bubeck 38393d1d1dSDr. Tilmann Bubeck ap = (unsigned char *)a; 39393d1d1dSDr. Tilmann Bubeck bp = (unsigned char *)b; 40393d1d1dSDr. Tilmann Bubeck while (len-- > 0) { 414b7e2db5SFabian Frederick swap(*ap, *bp); 42393d1d1dSDr. Tilmann Bubeck ap++; 43393d1d1dSDr. Tilmann Bubeck bp++; 44393d1d1dSDr. Tilmann Bubeck } 45393d1d1dSDr. Tilmann Bubeck } 46393d1d1dSDr. Tilmann Bubeck 47393d1d1dSDr. Tilmann Bubeck /** 48393d1d1dSDr. Tilmann Bubeck * Swap i_data and associated attributes between @inode1 and @inode2. 49393d1d1dSDr. Tilmann Bubeck * This function is used for the primary swap between inode1 and inode2 50393d1d1dSDr. Tilmann Bubeck * and also to revert this primary swap in case of errors. 51393d1d1dSDr. Tilmann Bubeck * 52393d1d1dSDr. Tilmann Bubeck * Therefore you have to make sure, that calling this method twice 53393d1d1dSDr. Tilmann Bubeck * will revert all changes. 54393d1d1dSDr. Tilmann Bubeck * 55393d1d1dSDr. Tilmann Bubeck * @inode1: pointer to first inode 56393d1d1dSDr. Tilmann Bubeck * @inode2: pointer to second inode 57393d1d1dSDr. Tilmann Bubeck */ 58393d1d1dSDr. Tilmann Bubeck static void swap_inode_data(struct inode *inode1, struct inode *inode2) 59393d1d1dSDr. Tilmann Bubeck { 60393d1d1dSDr. Tilmann Bubeck loff_t isize; 61393d1d1dSDr. Tilmann Bubeck struct ext4_inode_info *ei1; 62393d1d1dSDr. Tilmann Bubeck struct ext4_inode_info *ei2; 63393d1d1dSDr. Tilmann Bubeck 64393d1d1dSDr. Tilmann Bubeck ei1 = EXT4_I(inode1); 65393d1d1dSDr. Tilmann Bubeck ei2 = EXT4_I(inode2); 66393d1d1dSDr. Tilmann Bubeck 67393d1d1dSDr. Tilmann Bubeck memswap(&inode1->i_flags, &inode2->i_flags, sizeof(inode1->i_flags)); 68393d1d1dSDr. Tilmann Bubeck memswap(&inode1->i_version, &inode2->i_version, 69393d1d1dSDr. Tilmann Bubeck sizeof(inode1->i_version)); 70393d1d1dSDr. Tilmann Bubeck memswap(&inode1->i_blocks, &inode2->i_blocks, 71393d1d1dSDr. Tilmann Bubeck sizeof(inode1->i_blocks)); 72393d1d1dSDr. Tilmann Bubeck memswap(&inode1->i_bytes, &inode2->i_bytes, sizeof(inode1->i_bytes)); 73393d1d1dSDr. Tilmann Bubeck memswap(&inode1->i_atime, &inode2->i_atime, sizeof(inode1->i_atime)); 74393d1d1dSDr. Tilmann Bubeck memswap(&inode1->i_mtime, &inode2->i_mtime, sizeof(inode1->i_mtime)); 75393d1d1dSDr. Tilmann Bubeck 76393d1d1dSDr. Tilmann Bubeck memswap(ei1->i_data, ei2->i_data, sizeof(ei1->i_data)); 77393d1d1dSDr. Tilmann Bubeck memswap(&ei1->i_flags, &ei2->i_flags, sizeof(ei1->i_flags)); 78393d1d1dSDr. Tilmann Bubeck memswap(&ei1->i_disksize, &ei2->i_disksize, sizeof(ei1->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 87393d1d1dSDr. Tilmann Bubeck /** 88393d1d1dSDr. Tilmann Bubeck * Swap the information from the given @inode and the inode 89393d1d1dSDr. Tilmann Bubeck * EXT4_BOOT_LOADER_INO. It will basically swap i_data and all other 90393d1d1dSDr. Tilmann Bubeck * important fields of the inodes. 91393d1d1dSDr. Tilmann Bubeck * 92393d1d1dSDr. Tilmann Bubeck * @sb: the super block of the filesystem 93393d1d1dSDr. Tilmann Bubeck * @inode: the inode to swap with EXT4_BOOT_LOADER_INO 94393d1d1dSDr. Tilmann Bubeck * 95393d1d1dSDr. Tilmann Bubeck */ 96393d1d1dSDr. Tilmann Bubeck static long swap_inode_boot_loader(struct super_block *sb, 97393d1d1dSDr. Tilmann Bubeck struct inode *inode) 98393d1d1dSDr. Tilmann Bubeck { 99393d1d1dSDr. Tilmann Bubeck handle_t *handle; 100393d1d1dSDr. Tilmann Bubeck int err; 101393d1d1dSDr. Tilmann Bubeck struct inode *inode_bl; 102393d1d1dSDr. Tilmann Bubeck struct ext4_inode_info *ei_bl; 103d7092ae2Sjon ernst struct ext4_sb_info *sbi = EXT4_SB(sb); 104393d1d1dSDr. Tilmann Bubeck 105d8558a29STheodore Ts'o if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode)) 106d8558a29STheodore Ts'o return -EINVAL; 107393d1d1dSDr. Tilmann Bubeck 108d8558a29STheodore Ts'o if (!inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN)) 109d8558a29STheodore Ts'o return -EPERM; 110393d1d1dSDr. Tilmann Bubeck 111393d1d1dSDr. Tilmann Bubeck inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO); 112d8558a29STheodore Ts'o if (IS_ERR(inode_bl)) 113d8558a29STheodore Ts'o return PTR_ERR(inode_bl); 114393d1d1dSDr. Tilmann Bubeck ei_bl = EXT4_I(inode_bl); 115393d1d1dSDr. Tilmann Bubeck 116393d1d1dSDr. Tilmann Bubeck filemap_flush(inode->i_mapping); 117393d1d1dSDr. Tilmann Bubeck filemap_flush(inode_bl->i_mapping); 118393d1d1dSDr. Tilmann Bubeck 119393d1d1dSDr. Tilmann Bubeck /* Protect orig inodes against a truncate and make sure, 120393d1d1dSDr. Tilmann Bubeck * that only 1 swap_inode_boot_loader is running. */ 121375e289eSJ. Bruce Fields lock_two_nondirectories(inode, inode_bl); 122393d1d1dSDr. Tilmann Bubeck 123393d1d1dSDr. Tilmann Bubeck truncate_inode_pages(&inode->i_data, 0); 124393d1d1dSDr. Tilmann Bubeck truncate_inode_pages(&inode_bl->i_data, 0); 125393d1d1dSDr. Tilmann Bubeck 126393d1d1dSDr. Tilmann Bubeck /* Wait for all existing dio workers */ 127393d1d1dSDr. Tilmann Bubeck ext4_inode_block_unlocked_dio(inode); 128393d1d1dSDr. Tilmann Bubeck ext4_inode_block_unlocked_dio(inode_bl); 129393d1d1dSDr. Tilmann Bubeck inode_dio_wait(inode); 130393d1d1dSDr. Tilmann Bubeck inode_dio_wait(inode_bl); 131393d1d1dSDr. Tilmann Bubeck 132393d1d1dSDr. Tilmann Bubeck handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2); 133393d1d1dSDr. Tilmann Bubeck if (IS_ERR(handle)) { 134393d1d1dSDr. Tilmann Bubeck err = -EINVAL; 13530d29b11SZheng Liu goto journal_err_out; 136393d1d1dSDr. Tilmann Bubeck } 137393d1d1dSDr. Tilmann Bubeck 138393d1d1dSDr. Tilmann Bubeck /* Protect extent tree against block allocations via delalloc */ 139393d1d1dSDr. Tilmann Bubeck ext4_double_down_write_data_sem(inode, inode_bl); 140393d1d1dSDr. Tilmann Bubeck 141393d1d1dSDr. Tilmann Bubeck if (inode_bl->i_nlink == 0) { 142393d1d1dSDr. Tilmann Bubeck /* this inode has never been used as a BOOT_LOADER */ 143393d1d1dSDr. Tilmann Bubeck set_nlink(inode_bl, 1); 144393d1d1dSDr. Tilmann Bubeck i_uid_write(inode_bl, 0); 145393d1d1dSDr. Tilmann Bubeck i_gid_write(inode_bl, 0); 146393d1d1dSDr. Tilmann Bubeck inode_bl->i_flags = 0; 147393d1d1dSDr. Tilmann Bubeck ei_bl->i_flags = 0; 148393d1d1dSDr. Tilmann Bubeck inode_bl->i_version = 1; 149393d1d1dSDr. Tilmann Bubeck i_size_write(inode_bl, 0); 150393d1d1dSDr. Tilmann Bubeck inode_bl->i_mode = S_IFREG; 151e2b911c5SDarrick J. Wong if (ext4_has_feature_extents(sb)) { 152393d1d1dSDr. Tilmann Bubeck ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS); 153393d1d1dSDr. Tilmann Bubeck ext4_ext_tree_init(handle, inode_bl); 154393d1d1dSDr. Tilmann Bubeck } else 155393d1d1dSDr. Tilmann Bubeck memset(ei_bl->i_data, 0, sizeof(ei_bl->i_data)); 156393d1d1dSDr. Tilmann Bubeck } 157393d1d1dSDr. Tilmann Bubeck 158393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 159393d1d1dSDr. Tilmann Bubeck 160eeca7ea1SDeepa Dinamani inode->i_ctime = inode_bl->i_ctime = current_time(inode); 161393d1d1dSDr. Tilmann Bubeck 162393d1d1dSDr. Tilmann Bubeck spin_lock(&sbi->s_next_gen_lock); 163393d1d1dSDr. Tilmann Bubeck inode->i_generation = sbi->s_next_generation++; 164393d1d1dSDr. Tilmann Bubeck inode_bl->i_generation = sbi->s_next_generation++; 165393d1d1dSDr. Tilmann Bubeck spin_unlock(&sbi->s_next_gen_lock); 166393d1d1dSDr. Tilmann Bubeck 167393d1d1dSDr. Tilmann Bubeck ext4_discard_preallocations(inode); 168393d1d1dSDr. Tilmann Bubeck 169393d1d1dSDr. Tilmann Bubeck err = ext4_mark_inode_dirty(handle, inode); 170393d1d1dSDr. Tilmann Bubeck if (err < 0) { 171393d1d1dSDr. Tilmann Bubeck ext4_warning(inode->i_sb, 172393d1d1dSDr. Tilmann Bubeck "couldn't mark inode #%lu dirty (err %d)", 173393d1d1dSDr. Tilmann Bubeck inode->i_ino, err); 174393d1d1dSDr. Tilmann Bubeck /* Revert all changes: */ 175393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 176393d1d1dSDr. Tilmann Bubeck } else { 177393d1d1dSDr. Tilmann Bubeck err = ext4_mark_inode_dirty(handle, inode_bl); 178393d1d1dSDr. Tilmann Bubeck if (err < 0) { 179393d1d1dSDr. Tilmann Bubeck ext4_warning(inode_bl->i_sb, 180393d1d1dSDr. Tilmann Bubeck "couldn't mark inode #%lu dirty (err %d)", 181393d1d1dSDr. Tilmann Bubeck inode_bl->i_ino, err); 182393d1d1dSDr. Tilmann Bubeck /* Revert all changes: */ 183393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 184393d1d1dSDr. Tilmann Bubeck ext4_mark_inode_dirty(handle, inode); 185393d1d1dSDr. Tilmann Bubeck } 186393d1d1dSDr. Tilmann Bubeck } 187393d1d1dSDr. Tilmann Bubeck ext4_journal_stop(handle); 188393d1d1dSDr. Tilmann Bubeck ext4_double_up_write_data_sem(inode, inode_bl); 189393d1d1dSDr. Tilmann Bubeck 19030d29b11SZheng Liu journal_err_out: 191393d1d1dSDr. Tilmann Bubeck ext4_inode_resume_unlocked_dio(inode); 192393d1d1dSDr. Tilmann Bubeck ext4_inode_resume_unlocked_dio(inode_bl); 193375e289eSJ. Bruce Fields unlock_two_nondirectories(inode, inode_bl); 194393d1d1dSDr. Tilmann Bubeck iput(inode_bl); 195393d1d1dSDr. Tilmann Bubeck return err; 196393d1d1dSDr. Tilmann Bubeck } 197393d1d1dSDr. Tilmann Bubeck 198ba679017SEric Biggers #ifdef CONFIG_EXT4_FS_ENCRYPTION 1999bd8212fSMichael Halcrow static int uuid_is_zero(__u8 u[16]) 2009bd8212fSMichael Halcrow { 2019bd8212fSMichael Halcrow int i; 2029bd8212fSMichael Halcrow 2039bd8212fSMichael Halcrow for (i = 0; i < 16; i++) 2049bd8212fSMichael Halcrow if (u[i]) 2059bd8212fSMichael Halcrow return 0; 2069bd8212fSMichael Halcrow return 1; 2079bd8212fSMichael Halcrow } 208ba679017SEric Biggers #endif 2099bd8212fSMichael Halcrow 2109b7365fcSLi Xi static int ext4_ioctl_setflags(struct inode *inode, 2119b7365fcSLi Xi unsigned int flags) 212ac27a0ecSDave Kleikamp { 213617ba13bSMingming Cao struct ext4_inode_info *ei = EXT4_I(inode); 214ac27a0ecSDave Kleikamp handle_t *handle = NULL; 215fdde368eSAnton Protopopov int err = -EPERM, migrate = 0; 216617ba13bSMingming Cao struct ext4_iloc iloc; 21779906964STheodore Ts'o unsigned int oldflags, mask, i; 218ac27a0ecSDave Kleikamp unsigned int jflag; 219ac27a0ecSDave Kleikamp 220e47776a0SJan Kara /* Is it quota file? Do not allow user to mess with it */ 22142a74f20SDave Hansen if (IS_NOQUOTA(inode)) 22242a74f20SDave Hansen goto flags_out; 22342a74f20SDave Hansen 224ac27a0ecSDave Kleikamp oldflags = ei->i_flags; 225ac27a0ecSDave Kleikamp 226ac27a0ecSDave Kleikamp /* The JOURNAL_DATA flag is modifiable only by root */ 227617ba13bSMingming Cao jflag = flags & EXT4_JOURNAL_DATA_FL; 228ac27a0ecSDave Kleikamp 229ac27a0ecSDave Kleikamp /* 230ac27a0ecSDave Kleikamp * The IMMUTABLE and APPEND_ONLY flags can only be changed by 231ac27a0ecSDave Kleikamp * the relevant capability. 232ac27a0ecSDave Kleikamp * 233ac27a0ecSDave Kleikamp * This test looks nicer. Thanks to Pauline Middelink 234ac27a0ecSDave Kleikamp */ 235617ba13bSMingming Cao if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) { 23642a74f20SDave Hansen if (!capable(CAP_LINUX_IMMUTABLE)) 23742a74f20SDave Hansen goto flags_out; 238ac27a0ecSDave Kleikamp } 239ac27a0ecSDave Kleikamp 240ac27a0ecSDave Kleikamp /* 241ac27a0ecSDave Kleikamp * The JOURNAL_DATA flag can only be changed by 242ac27a0ecSDave Kleikamp * the relevant capability. 243ac27a0ecSDave Kleikamp */ 244617ba13bSMingming Cao if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { 24542a74f20SDave Hansen if (!capable(CAP_SYS_RESOURCE)) 24642a74f20SDave Hansen goto flags_out; 247ac27a0ecSDave Kleikamp } 248996bb9fdSTheodore Ts'o if ((flags ^ oldflags) & EXT4_EXTENTS_FL) 2494db46fc2SAneesh Kumar K.V migrate = 1; 250ac27a0ecSDave Kleikamp 251c8d46e41SJiaying Zhang if (flags & EXT4_EOFBLOCKS_FL) { 252c8d46e41SJiaying Zhang /* we don't support adding EOFBLOCKS flag */ 253c8d46e41SJiaying Zhang if (!(oldflags & EXT4_EOFBLOCKS_FL)) { 254c8d46e41SJiaying Zhang err = -EOPNOTSUPP; 255c8d46e41SJiaying Zhang goto flags_out; 256c8d46e41SJiaying Zhang } 2572c98eb5eSTheodore Ts'o } else if (oldflags & EXT4_EOFBLOCKS_FL) { 2582c98eb5eSTheodore Ts'o err = ext4_truncate(inode); 2592c98eb5eSTheodore Ts'o if (err) 2602c98eb5eSTheodore Ts'o goto flags_out; 2612c98eb5eSTheodore Ts'o } 262c8d46e41SJiaying Zhang 2639924a92aSTheodore Ts'o handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 264ac27a0ecSDave Kleikamp if (IS_ERR(handle)) { 26542a74f20SDave Hansen err = PTR_ERR(handle); 26642a74f20SDave Hansen goto flags_out; 267ac27a0ecSDave Kleikamp } 268ac27a0ecSDave Kleikamp if (IS_SYNC(inode)) 2690390131bSFrank Mayhar ext4_handle_sync(handle); 270617ba13bSMingming Cao err = ext4_reserve_inode_write(handle, inode, &iloc); 271ac27a0ecSDave Kleikamp if (err) 272ac27a0ecSDave Kleikamp goto flags_err; 273ac27a0ecSDave Kleikamp 27479906964STheodore Ts'o for (i = 0, mask = 1; i < 32; i++, mask <<= 1) { 27579906964STheodore Ts'o if (!(mask & EXT4_FL_USER_MODIFIABLE)) 27679906964STheodore Ts'o continue; 277f8011d93SJan Kara /* These flags get special treatment later */ 278f8011d93SJan Kara if (mask == EXT4_JOURNAL_DATA_FL || mask == EXT4_EXTENTS_FL) 279f8011d93SJan Kara continue; 28079906964STheodore Ts'o if (mask & flags) 28179906964STheodore Ts'o ext4_set_inode_flag(inode, i); 28279906964STheodore Ts'o else 28379906964STheodore Ts'o ext4_clear_inode_flag(inode, i); 28479906964STheodore Ts'o } 285ac27a0ecSDave Kleikamp 286617ba13bSMingming Cao ext4_set_inode_flags(inode); 287eeca7ea1SDeepa Dinamani inode->i_ctime = current_time(inode); 288ac27a0ecSDave Kleikamp 289617ba13bSMingming Cao err = ext4_mark_iloc_dirty(handle, inode, &iloc); 290ac27a0ecSDave Kleikamp flags_err: 291617ba13bSMingming Cao ext4_journal_stop(handle); 29242a74f20SDave Hansen if (err) 29342a74f20SDave Hansen goto flags_out; 294ac27a0ecSDave Kleikamp 295617ba13bSMingming Cao if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) 296617ba13bSMingming Cao err = ext4_change_inode_journal_flag(inode, jflag); 2974db46fc2SAneesh Kumar K.V if (err) 2984db46fc2SAneesh Kumar K.V goto flags_out; 299996bb9fdSTheodore Ts'o if (migrate) { 300996bb9fdSTheodore Ts'o if (flags & EXT4_EXTENTS_FL) 3014db46fc2SAneesh Kumar K.V err = ext4_ext_migrate(inode); 302996bb9fdSTheodore Ts'o else 303996bb9fdSTheodore Ts'o err = ext4_ind_migrate(inode); 304996bb9fdSTheodore Ts'o } 305996bb9fdSTheodore Ts'o 30642a74f20SDave Hansen flags_out: 3079b7365fcSLi Xi return err; 3089b7365fcSLi Xi } 3099b7365fcSLi Xi 3109b7365fcSLi Xi #ifdef CONFIG_QUOTA 3119b7365fcSLi Xi static int ext4_ioctl_setproject(struct file *filp, __u32 projid) 3129b7365fcSLi Xi { 3139b7365fcSLi Xi struct inode *inode = file_inode(filp); 3149b7365fcSLi Xi struct super_block *sb = inode->i_sb; 3159b7365fcSLi Xi struct ext4_inode_info *ei = EXT4_I(inode); 3169b7365fcSLi Xi int err, rc; 3179b7365fcSLi Xi handle_t *handle; 3189b7365fcSLi Xi kprojid_t kprojid; 3199b7365fcSLi Xi struct ext4_iloc iloc; 3209b7365fcSLi Xi struct ext4_inode *raw_inode; 321079788d0SWang Shilong struct dquot *transfer_to[MAXQUOTAS] = { }; 3229b7365fcSLi Xi 3230b7b7779SKaho Ng if (!ext4_has_feature_project(sb)) { 3249b7365fcSLi Xi if (projid != EXT4_DEF_PROJID) 3259b7365fcSLi Xi return -EOPNOTSUPP; 3269b7365fcSLi Xi else 3279b7365fcSLi Xi return 0; 3289b7365fcSLi Xi } 3299b7365fcSLi Xi 3309b7365fcSLi Xi if (EXT4_INODE_SIZE(sb) <= EXT4_GOOD_OLD_INODE_SIZE) 3319b7365fcSLi Xi return -EOPNOTSUPP; 3329b7365fcSLi Xi 3339b7365fcSLi Xi kprojid = make_kprojid(&init_user_ns, (projid_t)projid); 3349b7365fcSLi Xi 3359b7365fcSLi Xi if (projid_eq(kprojid, EXT4_I(inode)->i_projid)) 3369b7365fcSLi Xi return 0; 3379b7365fcSLi Xi 3389b7365fcSLi Xi err = mnt_want_write_file(filp); 3399b7365fcSLi Xi if (err) 3409b7365fcSLi Xi return err; 3419b7365fcSLi Xi 3429b7365fcSLi Xi err = -EPERM; 3435955102cSAl Viro inode_lock(inode); 3449b7365fcSLi Xi /* Is it quota file? Do not allow user to mess with it */ 3459b7365fcSLi Xi if (IS_NOQUOTA(inode)) 3469b7365fcSLi Xi goto out_unlock; 3479b7365fcSLi Xi 3489b7365fcSLi Xi err = ext4_get_inode_loc(inode, &iloc); 3499b7365fcSLi Xi if (err) 3509b7365fcSLi Xi goto out_unlock; 3519b7365fcSLi Xi 3529b7365fcSLi Xi raw_inode = ext4_raw_inode(&iloc); 3539b7365fcSLi Xi if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) { 3549b7365fcSLi Xi err = -EOVERFLOW; 3559b7365fcSLi Xi brelse(iloc.bh); 3569b7365fcSLi Xi goto out_unlock; 3579b7365fcSLi Xi } 3589b7365fcSLi Xi brelse(iloc.bh); 3599b7365fcSLi Xi 3609b7365fcSLi Xi dquot_initialize(inode); 3619b7365fcSLi Xi 3629b7365fcSLi Xi handle = ext4_journal_start(inode, EXT4_HT_QUOTA, 3639b7365fcSLi Xi EXT4_QUOTA_INIT_BLOCKS(sb) + 3649b7365fcSLi Xi EXT4_QUOTA_DEL_BLOCKS(sb) + 3); 3659b7365fcSLi Xi if (IS_ERR(handle)) { 3669b7365fcSLi Xi err = PTR_ERR(handle); 3679b7365fcSLi Xi goto out_unlock; 3689b7365fcSLi Xi } 3699b7365fcSLi Xi 3709b7365fcSLi Xi err = ext4_reserve_inode_write(handle, inode, &iloc); 3719b7365fcSLi Xi if (err) 3729b7365fcSLi Xi goto out_stop; 3739b7365fcSLi Xi 3749b7365fcSLi Xi transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); 375ff0bc084SSeth Forshee if (!IS_ERR(transfer_to[PRJQUOTA])) { 3769b7365fcSLi Xi err = __dquot_transfer(inode, transfer_to); 3779b7365fcSLi Xi dqput(transfer_to[PRJQUOTA]); 3789b7365fcSLi Xi if (err) 3799b7365fcSLi Xi goto out_dirty; 3809b7365fcSLi Xi } 381079788d0SWang Shilong 3829b7365fcSLi Xi EXT4_I(inode)->i_projid = kprojid; 383eeca7ea1SDeepa Dinamani inode->i_ctime = current_time(inode); 3849b7365fcSLi Xi out_dirty: 3859b7365fcSLi Xi rc = ext4_mark_iloc_dirty(handle, inode, &iloc); 3869b7365fcSLi Xi if (!err) 3879b7365fcSLi Xi err = rc; 3889b7365fcSLi Xi out_stop: 3899b7365fcSLi Xi ext4_journal_stop(handle); 3909b7365fcSLi Xi out_unlock: 3915955102cSAl Viro inode_unlock(inode); 3929b7365fcSLi Xi mnt_drop_write_file(filp); 3939b7365fcSLi Xi return err; 3949b7365fcSLi Xi } 3959b7365fcSLi Xi #else 3969b7365fcSLi Xi static int ext4_ioctl_setproject(struct file *filp, __u32 projid) 3979b7365fcSLi Xi { 3989b7365fcSLi Xi if (projid != EXT4_DEF_PROJID) 3999b7365fcSLi Xi return -EOPNOTSUPP; 4009b7365fcSLi Xi return 0; 4019b7365fcSLi Xi } 4029b7365fcSLi Xi #endif 4039b7365fcSLi Xi 4049b7365fcSLi Xi /* Transfer internal flags to xflags */ 4059b7365fcSLi Xi static inline __u32 ext4_iflags_to_xflags(unsigned long iflags) 4069b7365fcSLi Xi { 4079b7365fcSLi Xi __u32 xflags = 0; 4089b7365fcSLi Xi 4099b7365fcSLi Xi if (iflags & EXT4_SYNC_FL) 4109b7365fcSLi Xi xflags |= FS_XFLAG_SYNC; 4119b7365fcSLi Xi if (iflags & EXT4_IMMUTABLE_FL) 4129b7365fcSLi Xi xflags |= FS_XFLAG_IMMUTABLE; 4139b7365fcSLi Xi if (iflags & EXT4_APPEND_FL) 4149b7365fcSLi Xi xflags |= FS_XFLAG_APPEND; 4159b7365fcSLi Xi if (iflags & EXT4_NODUMP_FL) 4169b7365fcSLi Xi xflags |= FS_XFLAG_NODUMP; 4179b7365fcSLi Xi if (iflags & EXT4_NOATIME_FL) 4189b7365fcSLi Xi xflags |= FS_XFLAG_NOATIME; 4199b7365fcSLi Xi if (iflags & EXT4_PROJINHERIT_FL) 4209b7365fcSLi Xi xflags |= FS_XFLAG_PROJINHERIT; 4219b7365fcSLi Xi return xflags; 4229b7365fcSLi Xi } 4239b7365fcSLi Xi 424d14e7683SJan Kara #define EXT4_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \ 425d14e7683SJan Kara FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \ 426d14e7683SJan Kara FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT) 427d14e7683SJan Kara 4289b7365fcSLi Xi /* Transfer xflags flags to internal */ 4299b7365fcSLi Xi static inline unsigned long ext4_xflags_to_iflags(__u32 xflags) 4309b7365fcSLi Xi { 4319b7365fcSLi Xi unsigned long iflags = 0; 4329b7365fcSLi Xi 4339b7365fcSLi Xi if (xflags & FS_XFLAG_SYNC) 4349b7365fcSLi Xi iflags |= EXT4_SYNC_FL; 4359b7365fcSLi Xi if (xflags & FS_XFLAG_IMMUTABLE) 4369b7365fcSLi Xi iflags |= EXT4_IMMUTABLE_FL; 4379b7365fcSLi Xi if (xflags & FS_XFLAG_APPEND) 4389b7365fcSLi Xi iflags |= EXT4_APPEND_FL; 4399b7365fcSLi Xi if (xflags & FS_XFLAG_NODUMP) 4409b7365fcSLi Xi iflags |= EXT4_NODUMP_FL; 4419b7365fcSLi Xi if (xflags & FS_XFLAG_NOATIME) 4429b7365fcSLi Xi iflags |= EXT4_NOATIME_FL; 4439b7365fcSLi Xi if (xflags & FS_XFLAG_PROJINHERIT) 4449b7365fcSLi Xi iflags |= EXT4_PROJINHERIT_FL; 4459b7365fcSLi Xi 4469b7365fcSLi Xi return iflags; 4479b7365fcSLi Xi } 4489b7365fcSLi Xi 449e9be2ac7STheodore Ts'o int ext4_shutdown(struct super_block *sb, unsigned long arg) 450783d9485STheodore Ts'o { 451783d9485STheodore Ts'o struct ext4_sb_info *sbi = EXT4_SB(sb); 452783d9485STheodore Ts'o __u32 flags; 453783d9485STheodore Ts'o 454783d9485STheodore Ts'o if (!capable(CAP_SYS_ADMIN)) 455783d9485STheodore Ts'o return -EPERM; 456783d9485STheodore Ts'o 457783d9485STheodore Ts'o if (get_user(flags, (__u32 __user *)arg)) 458783d9485STheodore Ts'o return -EFAULT; 459783d9485STheodore Ts'o 460783d9485STheodore Ts'o if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH) 461783d9485STheodore Ts'o return -EINVAL; 462783d9485STheodore Ts'o 463783d9485STheodore Ts'o if (ext4_forced_shutdown(sbi)) 464783d9485STheodore Ts'o return 0; 465783d9485STheodore Ts'o 466783d9485STheodore Ts'o ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags); 467783d9485STheodore Ts'o 468783d9485STheodore Ts'o switch (flags) { 469783d9485STheodore Ts'o case EXT4_GOING_FLAGS_DEFAULT: 470783d9485STheodore Ts'o freeze_bdev(sb->s_bdev); 471783d9485STheodore Ts'o set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 472783d9485STheodore Ts'o thaw_bdev(sb->s_bdev, sb); 473783d9485STheodore Ts'o break; 474783d9485STheodore Ts'o case EXT4_GOING_FLAGS_LOGFLUSH: 475783d9485STheodore Ts'o set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 476783d9485STheodore Ts'o if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { 477783d9485STheodore Ts'o (void) ext4_force_commit(sb); 478783d9485STheodore Ts'o jbd2_journal_abort(sbi->s_journal, 0); 479783d9485STheodore Ts'o } 480783d9485STheodore Ts'o break; 481783d9485STheodore Ts'o case EXT4_GOING_FLAGS_NOLOGFLUSH: 482783d9485STheodore Ts'o set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 483783d9485STheodore Ts'o if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { 484783d9485STheodore Ts'o msleep(100); 485783d9485STheodore Ts'o jbd2_journal_abort(sbi->s_journal, 0); 486783d9485STheodore Ts'o } 487783d9485STheodore Ts'o break; 488783d9485STheodore Ts'o default: 489783d9485STheodore Ts'o return -EINVAL; 490783d9485STheodore Ts'o } 491783d9485STheodore Ts'o clear_opt(sb, DISCARD); 492783d9485STheodore Ts'o return 0; 493783d9485STheodore Ts'o } 494783d9485STheodore Ts'o 4950c9ec4beSDarrick J. Wong struct getfsmap_info { 4960c9ec4beSDarrick J. Wong struct super_block *gi_sb; 4970c9ec4beSDarrick J. Wong struct fsmap_head __user *gi_data; 4980c9ec4beSDarrick J. Wong unsigned int gi_idx; 4990c9ec4beSDarrick J. Wong __u32 gi_last_flags; 5000c9ec4beSDarrick J. Wong }; 5010c9ec4beSDarrick J. Wong 5020c9ec4beSDarrick J. Wong static int ext4_getfsmap_format(struct ext4_fsmap *xfm, void *priv) 5030c9ec4beSDarrick J. Wong { 5040c9ec4beSDarrick J. Wong struct getfsmap_info *info = priv; 5050c9ec4beSDarrick J. Wong struct fsmap fm; 5060c9ec4beSDarrick J. Wong 5070c9ec4beSDarrick J. Wong trace_ext4_getfsmap_mapping(info->gi_sb, xfm); 5080c9ec4beSDarrick J. Wong 5090c9ec4beSDarrick J. Wong info->gi_last_flags = xfm->fmr_flags; 5100c9ec4beSDarrick J. Wong ext4_fsmap_from_internal(info->gi_sb, &fm, xfm); 5110c9ec4beSDarrick J. Wong if (copy_to_user(&info->gi_data->fmh_recs[info->gi_idx++], &fm, 5120c9ec4beSDarrick J. Wong sizeof(struct fsmap))) 5130c9ec4beSDarrick J. Wong return -EFAULT; 5140c9ec4beSDarrick J. Wong 5150c9ec4beSDarrick J. Wong return 0; 5160c9ec4beSDarrick J. Wong } 5170c9ec4beSDarrick J. Wong 5180c9ec4beSDarrick J. Wong static int ext4_ioc_getfsmap(struct super_block *sb, 5190c9ec4beSDarrick J. Wong struct fsmap_head __user *arg) 5200c9ec4beSDarrick J. Wong { 5210c9ec4beSDarrick J. Wong struct getfsmap_info info = {0}; 5220c9ec4beSDarrick J. Wong struct ext4_fsmap_head xhead = {0}; 5230c9ec4beSDarrick J. Wong struct fsmap_head head; 5240c9ec4beSDarrick J. Wong bool aborted = false; 5250c9ec4beSDarrick J. Wong int error; 5260c9ec4beSDarrick J. Wong 5270c9ec4beSDarrick J. Wong if (copy_from_user(&head, arg, sizeof(struct fsmap_head))) 5280c9ec4beSDarrick J. Wong return -EFAULT; 5290c9ec4beSDarrick J. Wong if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) || 5300c9ec4beSDarrick J. Wong memchr_inv(head.fmh_keys[0].fmr_reserved, 0, 5310c9ec4beSDarrick J. Wong sizeof(head.fmh_keys[0].fmr_reserved)) || 5320c9ec4beSDarrick J. Wong memchr_inv(head.fmh_keys[1].fmr_reserved, 0, 5330c9ec4beSDarrick J. Wong sizeof(head.fmh_keys[1].fmr_reserved))) 5340c9ec4beSDarrick J. Wong return -EINVAL; 5350c9ec4beSDarrick J. Wong /* 5360c9ec4beSDarrick J. Wong * ext4 doesn't report file extents at all, so the only valid 5370c9ec4beSDarrick J. Wong * file offsets are the magic ones (all zeroes or all ones). 5380c9ec4beSDarrick J. Wong */ 5390c9ec4beSDarrick J. Wong if (head.fmh_keys[0].fmr_offset || 5400c9ec4beSDarrick J. Wong (head.fmh_keys[1].fmr_offset != 0 && 5410c9ec4beSDarrick J. Wong head.fmh_keys[1].fmr_offset != -1ULL)) 5420c9ec4beSDarrick J. Wong return -EINVAL; 5430c9ec4beSDarrick J. Wong 5440c9ec4beSDarrick J. Wong xhead.fmh_iflags = head.fmh_iflags; 5450c9ec4beSDarrick J. Wong xhead.fmh_count = head.fmh_count; 5460c9ec4beSDarrick J. Wong ext4_fsmap_to_internal(sb, &xhead.fmh_keys[0], &head.fmh_keys[0]); 5470c9ec4beSDarrick J. Wong ext4_fsmap_to_internal(sb, &xhead.fmh_keys[1], &head.fmh_keys[1]); 5480c9ec4beSDarrick J. Wong 5490c9ec4beSDarrick J. Wong trace_ext4_getfsmap_low_key(sb, &xhead.fmh_keys[0]); 5500c9ec4beSDarrick J. Wong trace_ext4_getfsmap_high_key(sb, &xhead.fmh_keys[1]); 5510c9ec4beSDarrick J. Wong 5520c9ec4beSDarrick J. Wong info.gi_sb = sb; 5530c9ec4beSDarrick J. Wong info.gi_data = arg; 5540c9ec4beSDarrick J. Wong error = ext4_getfsmap(sb, &xhead, ext4_getfsmap_format, &info); 5550c9ec4beSDarrick J. Wong if (error == EXT4_QUERY_RANGE_ABORT) { 5560c9ec4beSDarrick J. Wong error = 0; 5570c9ec4beSDarrick J. Wong aborted = true; 5580c9ec4beSDarrick J. Wong } else if (error) 5590c9ec4beSDarrick J. Wong return error; 5600c9ec4beSDarrick J. Wong 5610c9ec4beSDarrick J. Wong /* If we didn't abort, set the "last" flag in the last fmx */ 5620c9ec4beSDarrick J. Wong if (!aborted && info.gi_idx) { 5630c9ec4beSDarrick J. Wong info.gi_last_flags |= FMR_OF_LAST; 5640c9ec4beSDarrick J. Wong if (copy_to_user(&info.gi_data->fmh_recs[info.gi_idx - 1].fmr_flags, 5650c9ec4beSDarrick J. Wong &info.gi_last_flags, 5660c9ec4beSDarrick J. Wong sizeof(info.gi_last_flags))) 5670c9ec4beSDarrick J. Wong return -EFAULT; 5680c9ec4beSDarrick J. Wong } 5690c9ec4beSDarrick J. Wong 5700c9ec4beSDarrick J. Wong /* copy back header */ 5710c9ec4beSDarrick J. Wong head.fmh_entries = xhead.fmh_entries; 5720c9ec4beSDarrick J. Wong head.fmh_oflags = xhead.fmh_oflags; 5730c9ec4beSDarrick J. Wong if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) 5740c9ec4beSDarrick J. Wong return -EFAULT; 5750c9ec4beSDarrick J. Wong 5760c9ec4beSDarrick J. Wong return 0; 5770c9ec4beSDarrick J. Wong } 5780c9ec4beSDarrick J. Wong 5799b7365fcSLi Xi long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 5809b7365fcSLi Xi { 5819b7365fcSLi Xi struct inode *inode = file_inode(filp); 5829b7365fcSLi Xi struct super_block *sb = inode->i_sb; 5839b7365fcSLi Xi struct ext4_inode_info *ei = EXT4_I(inode); 5849b7365fcSLi Xi unsigned int flags; 5859b7365fcSLi Xi 5869b7365fcSLi Xi ext4_debug("cmd = %u, arg = %lu\n", cmd, arg); 5879b7365fcSLi Xi 5889b7365fcSLi Xi switch (cmd) { 5890c9ec4beSDarrick J. Wong case FS_IOC_GETFSMAP: 5900c9ec4beSDarrick J. Wong return ext4_ioc_getfsmap(sb, (void __user *)arg); 5919b7365fcSLi Xi case EXT4_IOC_GETFLAGS: 5929b7365fcSLi Xi ext4_get_inode_flags(ei); 5939b7365fcSLi Xi flags = ei->i_flags & EXT4_FL_USER_VISIBLE; 5949b7365fcSLi Xi return put_user(flags, (int __user *) arg); 5959b7365fcSLi Xi case EXT4_IOC_SETFLAGS: { 5969b7365fcSLi Xi int err; 5979b7365fcSLi Xi 5989b7365fcSLi Xi if (!inode_owner_or_capable(inode)) 5999b7365fcSLi Xi return -EACCES; 6009b7365fcSLi Xi 6019b7365fcSLi Xi if (get_user(flags, (int __user *) arg)) 6029b7365fcSLi Xi return -EFAULT; 6039b7365fcSLi Xi 604d14e7683SJan Kara if (flags & ~EXT4_FL_USER_VISIBLE) 605d14e7683SJan Kara return -EOPNOTSUPP; 606d14e7683SJan Kara /* 607d14e7683SJan Kara * chattr(1) grabs flags via GETFLAGS, modifies the result and 608d14e7683SJan Kara * passes that to SETFLAGS. So we cannot easily make SETFLAGS 609d14e7683SJan Kara * more restrictive than just silently masking off visible but 610d14e7683SJan Kara * not settable flags as we always did. 611d14e7683SJan Kara */ 612d14e7683SJan Kara flags &= EXT4_FL_USER_MODIFIABLE; 613d14e7683SJan Kara if (ext4_mask_flags(inode->i_mode, flags) != flags) 614d14e7683SJan Kara return -EOPNOTSUPP; 615d14e7683SJan Kara 6169b7365fcSLi Xi err = mnt_want_write_file(filp); 6179b7365fcSLi Xi if (err) 6189b7365fcSLi Xi return err; 6199b7365fcSLi Xi 6205955102cSAl Viro inode_lock(inode); 6219b7365fcSLi Xi err = ext4_ioctl_setflags(inode, flags); 6225955102cSAl Viro inode_unlock(inode); 6232a79f17eSAl Viro mnt_drop_write_file(filp); 624ac27a0ecSDave Kleikamp return err; 625ac27a0ecSDave Kleikamp } 626617ba13bSMingming Cao case EXT4_IOC_GETVERSION: 627617ba13bSMingming Cao case EXT4_IOC_GETVERSION_OLD: 628ac27a0ecSDave Kleikamp return put_user(inode->i_generation, (int __user *) arg); 629617ba13bSMingming Cao case EXT4_IOC_SETVERSION: 630617ba13bSMingming Cao case EXT4_IOC_SETVERSION_OLD: { 631ac27a0ecSDave Kleikamp handle_t *handle; 632617ba13bSMingming Cao struct ext4_iloc iloc; 633ac27a0ecSDave Kleikamp __u32 generation; 634ac27a0ecSDave Kleikamp int err; 635ac27a0ecSDave Kleikamp 6362e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 637ac27a0ecSDave Kleikamp return -EPERM; 63842a74f20SDave Hansen 6399aa5d32bSDmitry Monakhov if (ext4_has_metadata_csum(inode->i_sb)) { 640814525f4SDarrick J. Wong ext4_warning(sb, "Setting inode version is not " 641814525f4SDarrick J. Wong "supported with metadata_csum enabled."); 642814525f4SDarrick J. Wong return -ENOTTY; 643814525f4SDarrick J. Wong } 644814525f4SDarrick J. Wong 645a561be71SAl Viro err = mnt_want_write_file(filp); 64642a74f20SDave Hansen if (err) 64742a74f20SDave Hansen return err; 64842a74f20SDave Hansen if (get_user(generation, (int __user *) arg)) { 64942a74f20SDave Hansen err = -EFAULT; 65042a74f20SDave Hansen goto setversion_out; 65142a74f20SDave Hansen } 652ac27a0ecSDave Kleikamp 6535955102cSAl Viro inode_lock(inode); 6549924a92aSTheodore Ts'o handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 65542a74f20SDave Hansen if (IS_ERR(handle)) { 65642a74f20SDave Hansen err = PTR_ERR(handle); 6576c2155b9SDjalal Harouni goto unlock_out; 65842a74f20SDave Hansen } 659617ba13bSMingming Cao err = ext4_reserve_inode_write(handle, inode, &iloc); 660ac27a0ecSDave Kleikamp if (err == 0) { 661eeca7ea1SDeepa Dinamani inode->i_ctime = current_time(inode); 662ac27a0ecSDave Kleikamp inode->i_generation = generation; 663617ba13bSMingming Cao err = ext4_mark_iloc_dirty(handle, inode, &iloc); 664ac27a0ecSDave Kleikamp } 665617ba13bSMingming Cao ext4_journal_stop(handle); 6666c2155b9SDjalal Harouni 6676c2155b9SDjalal Harouni unlock_out: 6685955102cSAl Viro inode_unlock(inode); 66942a74f20SDave Hansen setversion_out: 6702a79f17eSAl Viro mnt_drop_write_file(filp); 671ac27a0ecSDave Kleikamp return err; 672ac27a0ecSDave Kleikamp } 673617ba13bSMingming Cao case EXT4_IOC_GROUP_EXTEND: { 674617ba13bSMingming Cao ext4_fsblk_t n_blocks_count; 675ac046f1dSPeng Tao int err, err2=0; 676ac27a0ecSDave Kleikamp 6778f82f840SYongqiang Yang err = ext4_resize_begin(sb); 6788f82f840SYongqiang Yang if (err) 6798f82f840SYongqiang Yang return err; 680ac27a0ecSDave Kleikamp 681014a1770SDjalal Harouni if (get_user(n_blocks_count, (__u32 __user *)arg)) { 682014a1770SDjalal Harouni err = -EFAULT; 683014a1770SDjalal Harouni goto group_extend_out; 684014a1770SDjalal Harouni } 685ac27a0ecSDave Kleikamp 686e2b911c5SDarrick J. Wong if (ext4_has_feature_bigalloc(sb)) { 687bab08ab9STheodore Ts'o ext4_msg(sb, KERN_ERR, 688bab08ab9STheodore Ts'o "Online resizing not supported with bigalloc"); 689014a1770SDjalal Harouni err = -EOPNOTSUPP; 690014a1770SDjalal Harouni goto group_extend_out; 691bab08ab9STheodore Ts'o } 692bab08ab9STheodore Ts'o 693a561be71SAl Viro err = mnt_want_write_file(filp); 69442a74f20SDave Hansen if (err) 695014a1770SDjalal Harouni goto group_extend_out; 69642a74f20SDave Hansen 697617ba13bSMingming Cao err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count); 698ac046f1dSPeng Tao if (EXT4_SB(sb)->s_journal) { 699dab291afSMingming Cao jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 7007ffe1ea8SHidehiro Kawai err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 701dab291afSMingming Cao jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 702ac046f1dSPeng Tao } 7037ffe1ea8SHidehiro Kawai if (err == 0) 7047ffe1ea8SHidehiro Kawai err = err2; 7052a79f17eSAl Viro mnt_drop_write_file(filp); 706014a1770SDjalal Harouni group_extend_out: 7078f82f840SYongqiang Yang ext4_resize_end(sb); 708ac27a0ecSDave Kleikamp return err; 709ac27a0ecSDave Kleikamp } 710748de673SAkira Fujita 711748de673SAkira Fujita case EXT4_IOC_MOVE_EXT: { 712748de673SAkira Fujita struct move_extent me; 7132903ff01SAl Viro struct fd donor; 7142903ff01SAl Viro int err; 715748de673SAkira Fujita 7164a58579bSAkira Fujita if (!(filp->f_mode & FMODE_READ) || 7174a58579bSAkira Fujita !(filp->f_mode & FMODE_WRITE)) 7184a58579bSAkira Fujita return -EBADF; 7194a58579bSAkira Fujita 720748de673SAkira Fujita if (copy_from_user(&me, 721748de673SAkira Fujita (struct move_extent __user *)arg, sizeof(me))) 722748de673SAkira Fujita return -EFAULT; 7234a58579bSAkira Fujita me.moved_len = 0; 724748de673SAkira Fujita 7252903ff01SAl Viro donor = fdget(me.donor_fd); 7262903ff01SAl Viro if (!donor.file) 727748de673SAkira Fujita return -EBADF; 728748de673SAkira Fujita 7292903ff01SAl Viro if (!(donor.file->f_mode & FMODE_WRITE)) { 7304a58579bSAkira Fujita err = -EBADF; 7314a58579bSAkira Fujita goto mext_out; 732748de673SAkira Fujita } 733748de673SAkira Fujita 734e2b911c5SDarrick J. Wong if (ext4_has_feature_bigalloc(sb)) { 735bab08ab9STheodore Ts'o ext4_msg(sb, KERN_ERR, 736bab08ab9STheodore Ts'o "Online defrag not supported with bigalloc"); 737399c9b86SAl Viro err = -EOPNOTSUPP; 738399c9b86SAl Viro goto mext_out; 73973f34a5eSRoss Zwisler } else if (IS_DAX(inode)) { 74073f34a5eSRoss Zwisler ext4_msg(sb, KERN_ERR, 74173f34a5eSRoss Zwisler "Online defrag not supported with DAX"); 74273f34a5eSRoss Zwisler err = -EOPNOTSUPP; 74373f34a5eSRoss Zwisler goto mext_out; 744bab08ab9STheodore Ts'o } 745bab08ab9STheodore Ts'o 746a561be71SAl Viro err = mnt_want_write_file(filp); 7474a58579bSAkira Fujita if (err) 7484a58579bSAkira Fujita goto mext_out; 7494a58579bSAkira Fujita 7502903ff01SAl Viro err = ext4_move_extents(filp, donor.file, me.orig_start, 751748de673SAkira Fujita me.donor_start, me.len, &me.moved_len); 7522a79f17eSAl Viro mnt_drop_write_file(filp); 753748de673SAkira Fujita 754c437b273SAkira Fujita if (copy_to_user((struct move_extent __user *)arg, 755c437b273SAkira Fujita &me, sizeof(me))) 7564a58579bSAkira Fujita err = -EFAULT; 7574a58579bSAkira Fujita mext_out: 7582903ff01SAl Viro fdput(donor); 759748de673SAkira Fujita return err; 760748de673SAkira Fujita } 761748de673SAkira Fujita 762617ba13bSMingming Cao case EXT4_IOC_GROUP_ADD: { 763617ba13bSMingming Cao struct ext4_new_group_data input; 764ac046f1dSPeng Tao int err, err2=0; 765ac27a0ecSDave Kleikamp 7668f82f840SYongqiang Yang err = ext4_resize_begin(sb); 7678f82f840SYongqiang Yang if (err) 7688f82f840SYongqiang Yang return err; 769ac27a0ecSDave Kleikamp 770617ba13bSMingming Cao if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg, 771014a1770SDjalal Harouni sizeof(input))) { 772014a1770SDjalal Harouni err = -EFAULT; 773014a1770SDjalal Harouni goto group_add_out; 774014a1770SDjalal Harouni } 775ac27a0ecSDave Kleikamp 776e2b911c5SDarrick J. Wong if (ext4_has_feature_bigalloc(sb)) { 777bab08ab9STheodore Ts'o ext4_msg(sb, KERN_ERR, 778bab08ab9STheodore Ts'o "Online resizing not supported with bigalloc"); 779014a1770SDjalal Harouni err = -EOPNOTSUPP; 780014a1770SDjalal Harouni goto group_add_out; 781bab08ab9STheodore Ts'o } 782bab08ab9STheodore Ts'o 783a561be71SAl Viro err = mnt_want_write_file(filp); 78442a74f20SDave Hansen if (err) 785014a1770SDjalal Harouni goto group_add_out; 78642a74f20SDave Hansen 787617ba13bSMingming Cao err = ext4_group_add(sb, &input); 788ac046f1dSPeng Tao if (EXT4_SB(sb)->s_journal) { 789dab291afSMingming Cao jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 7907ffe1ea8SHidehiro Kawai err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 791dab291afSMingming Cao jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 792ac046f1dSPeng Tao } 7937ffe1ea8SHidehiro Kawai if (err == 0) 7947ffe1ea8SHidehiro Kawai err = err2; 7952a79f17eSAl Viro mnt_drop_write_file(filp); 7967f511862STheodore Ts'o if (!err && ext4_has_group_desc_csum(sb) && 7977f511862STheodore Ts'o test_opt(sb, INIT_INODE_TABLE)) 7987f511862STheodore Ts'o err = ext4_register_li_request(sb, input.group); 799014a1770SDjalal Harouni group_add_out: 8008f82f840SYongqiang Yang ext4_resize_end(sb); 801ac27a0ecSDave Kleikamp return err; 802ac27a0ecSDave Kleikamp } 803ac27a0ecSDave Kleikamp 804c14c6fd5SAneesh Kumar K.V case EXT4_IOC_MIGRATE: 8052a43a878SAneesh Kumar K.V { 8062a43a878SAneesh Kumar K.V int err; 8072e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 8082a43a878SAneesh Kumar K.V return -EACCES; 8092a43a878SAneesh Kumar K.V 810a561be71SAl Viro err = mnt_want_write_file(filp); 8112a43a878SAneesh Kumar K.V if (err) 8122a43a878SAneesh Kumar K.V return err; 8132a43a878SAneesh Kumar K.V /* 8142a43a878SAneesh Kumar K.V * inode_mutex prevent write and truncate on the file. 8152a43a878SAneesh Kumar K.V * Read still goes through. We take i_data_sem in 8162a43a878SAneesh Kumar K.V * ext4_ext_swap_inode_data before we switch the 8172a43a878SAneesh Kumar K.V * inode format to prevent read. 8182a43a878SAneesh Kumar K.V */ 8195955102cSAl Viro inode_lock((inode)); 8202a43a878SAneesh Kumar K.V err = ext4_ext_migrate(inode); 8215955102cSAl Viro inode_unlock((inode)); 8222a79f17eSAl Viro mnt_drop_write_file(filp); 8232a43a878SAneesh Kumar K.V return err; 8242a43a878SAneesh Kumar K.V } 825c14c6fd5SAneesh Kumar K.V 826ccd2506bSTheodore Ts'o case EXT4_IOC_ALLOC_DA_BLKS: 827ccd2506bSTheodore Ts'o { 828ccd2506bSTheodore Ts'o int err; 8292e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 830ccd2506bSTheodore Ts'o return -EACCES; 831ccd2506bSTheodore Ts'o 832a561be71SAl Viro err = mnt_want_write_file(filp); 833ccd2506bSTheodore Ts'o if (err) 834ccd2506bSTheodore Ts'o return err; 835ccd2506bSTheodore Ts'o err = ext4_alloc_da_blocks(inode); 8362a79f17eSAl Viro mnt_drop_write_file(filp); 837ccd2506bSTheodore Ts'o return err; 838ccd2506bSTheodore Ts'o } 839ccd2506bSTheodore Ts'o 840393d1d1dSDr. Tilmann Bubeck case EXT4_IOC_SWAP_BOOT: 8413e67cfadSDmitry Monakhov { 8423e67cfadSDmitry Monakhov int err; 843393d1d1dSDr. Tilmann Bubeck if (!(filp->f_mode & FMODE_WRITE)) 844393d1d1dSDr. Tilmann Bubeck return -EBADF; 8453e67cfadSDmitry Monakhov err = mnt_want_write_file(filp); 8463e67cfadSDmitry Monakhov if (err) 8473e67cfadSDmitry Monakhov return err; 8483e67cfadSDmitry Monakhov err = swap_inode_boot_loader(sb, inode); 8493e67cfadSDmitry Monakhov mnt_drop_write_file(filp); 8503e67cfadSDmitry Monakhov return err; 8513e67cfadSDmitry Monakhov } 852393d1d1dSDr. Tilmann Bubeck 85319c5246dSYongqiang Yang case EXT4_IOC_RESIZE_FS: { 85419c5246dSYongqiang Yang ext4_fsblk_t n_blocks_count; 85519c5246dSYongqiang Yang int err = 0, err2 = 0; 8567f511862STheodore Ts'o ext4_group_t o_group = EXT4_SB(sb)->s_groups_count; 85719c5246dSYongqiang Yang 858e2b911c5SDarrick J. Wong if (ext4_has_feature_bigalloc(sb)) { 85919c5246dSYongqiang Yang ext4_msg(sb, KERN_ERR, 86019c5246dSYongqiang Yang "Online resizing not (yet) supported with bigalloc"); 86119c5246dSYongqiang Yang return -EOPNOTSUPP; 86219c5246dSYongqiang Yang } 86319c5246dSYongqiang Yang 86419c5246dSYongqiang Yang if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, 86519c5246dSYongqiang Yang sizeof(__u64))) { 86619c5246dSYongqiang Yang return -EFAULT; 86719c5246dSYongqiang Yang } 86819c5246dSYongqiang Yang 86919c5246dSYongqiang Yang err = ext4_resize_begin(sb); 87019c5246dSYongqiang Yang if (err) 87119c5246dSYongqiang Yang return err; 87219c5246dSYongqiang Yang 8738cae6f71SAl Viro err = mnt_want_write_file(filp); 87419c5246dSYongqiang Yang if (err) 87519c5246dSYongqiang Yang goto resizefs_out; 87619c5246dSYongqiang Yang 87719c5246dSYongqiang Yang err = ext4_resize_fs(sb, n_blocks_count); 87819c5246dSYongqiang Yang if (EXT4_SB(sb)->s_journal) { 87919c5246dSYongqiang Yang jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 88019c5246dSYongqiang Yang err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 88119c5246dSYongqiang Yang jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 88219c5246dSYongqiang Yang } 88319c5246dSYongqiang Yang if (err == 0) 88419c5246dSYongqiang Yang err = err2; 8858cae6f71SAl Viro mnt_drop_write_file(filp); 8867f511862STheodore Ts'o if (!err && (o_group > EXT4_SB(sb)->s_groups_count) && 8877f511862STheodore Ts'o ext4_has_group_desc_csum(sb) && 8887f511862STheodore Ts'o test_opt(sb, INIT_INODE_TABLE)) 8897f511862STheodore Ts'o err = ext4_register_li_request(sb, o_group); 8907f511862STheodore Ts'o 89119c5246dSYongqiang Yang resizefs_out: 89219c5246dSYongqiang Yang ext4_resize_end(sb); 89319c5246dSYongqiang Yang return err; 89419c5246dSYongqiang Yang } 89519c5246dSYongqiang Yang 896e681c047SLukas Czerner case FITRIM: 897e681c047SLukas Czerner { 89841431792SLukas Czerner struct request_queue *q = bdev_get_queue(sb->s_bdev); 899e681c047SLukas Czerner struct fstrim_range range; 900e681c047SLukas Czerner int ret = 0; 901e681c047SLukas Czerner 902e681c047SLukas Czerner if (!capable(CAP_SYS_ADMIN)) 903e681c047SLukas Czerner return -EPERM; 904e681c047SLukas Czerner 90541431792SLukas Czerner if (!blk_queue_discard(q)) 90641431792SLukas Czerner return -EOPNOTSUPP; 90741431792SLukas Czerner 908e6705f7cSH Hartley Sweeten if (copy_from_user(&range, (struct fstrim_range __user *)arg, 909e681c047SLukas Czerner sizeof(range))) 910e681c047SLukas Czerner return -EFAULT; 911e681c047SLukas Czerner 9125c2ed62fSLukas Czerner range.minlen = max((unsigned int)range.minlen, 9135c2ed62fSLukas Czerner q->limits.discard_granularity); 914e681c047SLukas Czerner ret = ext4_trim_fs(sb, &range); 915e681c047SLukas Czerner if (ret < 0) 916e681c047SLukas Czerner return ret; 917e681c047SLukas Czerner 918e6705f7cSH Hartley Sweeten if (copy_to_user((struct fstrim_range __user *)arg, &range, 919e681c047SLukas Czerner sizeof(range))) 920e681c047SLukas Czerner return -EFAULT; 921e681c047SLukas Czerner 922e681c047SLukas Czerner return 0; 923e681c047SLukas Czerner } 9247869a4a6STheodore Ts'o case EXT4_IOC_PRECACHE_EXTENTS: 9257869a4a6STheodore Ts'o return ext4_ext_precache(inode); 926e681c047SLukas Czerner 927db717d8eSEric Biggers case EXT4_IOC_SET_ENCRYPTION_POLICY: 9289a200d07SRichard Weinberger if (!ext4_has_feature_encrypt(sb)) 9299a200d07SRichard Weinberger return -EOPNOTSUPP; 930db717d8eSEric Biggers return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); 9319a200d07SRichard Weinberger 9329bd8212fSMichael Halcrow case EXT4_IOC_GET_ENCRYPTION_PWSALT: { 933ba679017SEric Biggers #ifdef CONFIG_EXT4_FS_ENCRYPTION 9349bd8212fSMichael Halcrow int err, err2; 9359bd8212fSMichael Halcrow struct ext4_sb_info *sbi = EXT4_SB(sb); 9369bd8212fSMichael Halcrow handle_t *handle; 9379bd8212fSMichael Halcrow 93835997d1cSEric Biggers if (!ext4_has_feature_encrypt(sb)) 9399bd8212fSMichael Halcrow return -EOPNOTSUPP; 9409bd8212fSMichael Halcrow if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) { 9419bd8212fSMichael Halcrow err = mnt_want_write_file(filp); 9429bd8212fSMichael Halcrow if (err) 9439bd8212fSMichael Halcrow return err; 9449bd8212fSMichael Halcrow handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1); 9459bd8212fSMichael Halcrow if (IS_ERR(handle)) { 9469bd8212fSMichael Halcrow err = PTR_ERR(handle); 9479bd8212fSMichael Halcrow goto pwsalt_err_exit; 9489bd8212fSMichael Halcrow } 9499bd8212fSMichael Halcrow err = ext4_journal_get_write_access(handle, sbi->s_sbh); 9509bd8212fSMichael Halcrow if (err) 9519bd8212fSMichael Halcrow goto pwsalt_err_journal; 9529bd8212fSMichael Halcrow generate_random_uuid(sbi->s_es->s_encrypt_pw_salt); 9539bd8212fSMichael Halcrow err = ext4_handle_dirty_metadata(handle, NULL, 9549bd8212fSMichael Halcrow sbi->s_sbh); 9559bd8212fSMichael Halcrow pwsalt_err_journal: 9569bd8212fSMichael Halcrow err2 = ext4_journal_stop(handle); 9579bd8212fSMichael Halcrow if (err2 && !err) 9589bd8212fSMichael Halcrow err = err2; 9599bd8212fSMichael Halcrow pwsalt_err_exit: 9609bd8212fSMichael Halcrow mnt_drop_write_file(filp); 9619bd8212fSMichael Halcrow if (err) 9629bd8212fSMichael Halcrow return err; 9639bd8212fSMichael Halcrow } 964b4ab9e29SFabian Frederick if (copy_to_user((void __user *) arg, 965b4ab9e29SFabian Frederick sbi->s_es->s_encrypt_pw_salt, 16)) 9669bd8212fSMichael Halcrow return -EFAULT; 9679bd8212fSMichael Halcrow return 0; 968ba679017SEric Biggers #else 969ba679017SEric Biggers return -EOPNOTSUPP; 970ba679017SEric Biggers #endif 9719bd8212fSMichael Halcrow } 972db717d8eSEric Biggers case EXT4_IOC_GET_ENCRYPTION_POLICY: 973db717d8eSEric Biggers return fscrypt_ioctl_get_policy(filp, (void __user *)arg); 9749bd8212fSMichael Halcrow 9759b7365fcSLi Xi case EXT4_IOC_FSGETXATTR: 9769b7365fcSLi Xi { 9779b7365fcSLi Xi struct fsxattr fa; 9789b7365fcSLi Xi 9799b7365fcSLi Xi memset(&fa, 0, sizeof(struct fsxattr)); 9809b7365fcSLi Xi ext4_get_inode_flags(ei); 9819b7365fcSLi Xi fa.fsx_xflags = ext4_iflags_to_xflags(ei->i_flags & EXT4_FL_USER_VISIBLE); 9829b7365fcSLi Xi 9830b7b7779SKaho Ng if (ext4_has_feature_project(inode->i_sb)) { 9849b7365fcSLi Xi fa.fsx_projid = (__u32)from_kprojid(&init_user_ns, 9859b7365fcSLi Xi EXT4_I(inode)->i_projid); 9869b7365fcSLi Xi } 9879b7365fcSLi Xi 9889b7365fcSLi Xi if (copy_to_user((struct fsxattr __user *)arg, 9899b7365fcSLi Xi &fa, sizeof(fa))) 9909b7365fcSLi Xi return -EFAULT; 9919b7365fcSLi Xi return 0; 9929b7365fcSLi Xi } 9939b7365fcSLi Xi case EXT4_IOC_FSSETXATTR: 9949b7365fcSLi Xi { 9959b7365fcSLi Xi struct fsxattr fa; 9969b7365fcSLi Xi int err; 9979b7365fcSLi Xi 9989b7365fcSLi Xi if (copy_from_user(&fa, (struct fsxattr __user *)arg, 9999b7365fcSLi Xi sizeof(fa))) 10009b7365fcSLi Xi return -EFAULT; 10019b7365fcSLi Xi 10029b7365fcSLi Xi /* Make sure caller has proper permission */ 10039b7365fcSLi Xi if (!inode_owner_or_capable(inode)) 10049b7365fcSLi Xi return -EACCES; 10059b7365fcSLi Xi 1006d14e7683SJan Kara if (fa.fsx_xflags & ~EXT4_SUPPORTED_FS_XFLAGS) 1007d14e7683SJan Kara return -EOPNOTSUPP; 1008d14e7683SJan Kara 1009d14e7683SJan Kara flags = ext4_xflags_to_iflags(fa.fsx_xflags); 1010d14e7683SJan Kara if (ext4_mask_flags(inode->i_mode, flags) != flags) 1011d14e7683SJan Kara return -EOPNOTSUPP; 1012d14e7683SJan Kara 10139b7365fcSLi Xi err = mnt_want_write_file(filp); 10149b7365fcSLi Xi if (err) 10159b7365fcSLi Xi return err; 10169b7365fcSLi Xi 10175955102cSAl Viro inode_lock(inode); 10189b7365fcSLi Xi flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) | 10199b7365fcSLi Xi (flags & EXT4_FL_XFLAG_VISIBLE); 10209b7365fcSLi Xi err = ext4_ioctl_setflags(inode, flags); 10215955102cSAl Viro inode_unlock(inode); 10229b7365fcSLi Xi mnt_drop_write_file(filp); 10239b7365fcSLi Xi if (err) 10249b7365fcSLi Xi return err; 10259b7365fcSLi Xi 10269b7365fcSLi Xi err = ext4_ioctl_setproject(filp, fa.fsx_projid); 10279b7365fcSLi Xi if (err) 10289b7365fcSLi Xi return err; 10299b7365fcSLi Xi 10309b7365fcSLi Xi return 0; 10319b7365fcSLi Xi } 1032e9be2ac7STheodore Ts'o case EXT4_IOC_SHUTDOWN: 1033e9be2ac7STheodore Ts'o return ext4_shutdown(sb, arg); 1034ac27a0ecSDave Kleikamp default: 1035ac27a0ecSDave Kleikamp return -ENOTTY; 1036ac27a0ecSDave Kleikamp } 1037ac27a0ecSDave Kleikamp } 1038ac27a0ecSDave Kleikamp 1039ac27a0ecSDave Kleikamp #ifdef CONFIG_COMPAT 1040617ba13bSMingming Cao long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 1041ac27a0ecSDave Kleikamp { 1042ac27a0ecSDave Kleikamp /* These are just misnamed, they actually get/put from/to user an int */ 1043ac27a0ecSDave Kleikamp switch (cmd) { 1044617ba13bSMingming Cao case EXT4_IOC32_GETFLAGS: 1045617ba13bSMingming Cao cmd = EXT4_IOC_GETFLAGS; 1046ac27a0ecSDave Kleikamp break; 1047617ba13bSMingming Cao case EXT4_IOC32_SETFLAGS: 1048617ba13bSMingming Cao cmd = EXT4_IOC_SETFLAGS; 1049ac27a0ecSDave Kleikamp break; 1050617ba13bSMingming Cao case EXT4_IOC32_GETVERSION: 1051617ba13bSMingming Cao cmd = EXT4_IOC_GETVERSION; 1052ac27a0ecSDave Kleikamp break; 1053617ba13bSMingming Cao case EXT4_IOC32_SETVERSION: 1054617ba13bSMingming Cao cmd = EXT4_IOC_SETVERSION; 1055ac27a0ecSDave Kleikamp break; 1056617ba13bSMingming Cao case EXT4_IOC32_GROUP_EXTEND: 1057617ba13bSMingming Cao cmd = EXT4_IOC_GROUP_EXTEND; 1058ac27a0ecSDave Kleikamp break; 1059617ba13bSMingming Cao case EXT4_IOC32_GETVERSION_OLD: 1060617ba13bSMingming Cao cmd = EXT4_IOC_GETVERSION_OLD; 1061ac27a0ecSDave Kleikamp break; 1062617ba13bSMingming Cao case EXT4_IOC32_SETVERSION_OLD: 1063617ba13bSMingming Cao cmd = EXT4_IOC_SETVERSION_OLD; 1064ac27a0ecSDave Kleikamp break; 1065617ba13bSMingming Cao case EXT4_IOC32_GETRSVSZ: 1066617ba13bSMingming Cao cmd = EXT4_IOC_GETRSVSZ; 1067ac27a0ecSDave Kleikamp break; 1068617ba13bSMingming Cao case EXT4_IOC32_SETRSVSZ: 1069617ba13bSMingming Cao cmd = EXT4_IOC_SETRSVSZ; 1070ac27a0ecSDave Kleikamp break; 10714d92dc0fSBen Hutchings case EXT4_IOC32_GROUP_ADD: { 10724d92dc0fSBen Hutchings struct compat_ext4_new_group_input __user *uinput; 10734d92dc0fSBen Hutchings struct ext4_new_group_input input; 10744d92dc0fSBen Hutchings mm_segment_t old_fs; 10754d92dc0fSBen Hutchings int err; 10764d92dc0fSBen Hutchings 10774d92dc0fSBen Hutchings uinput = compat_ptr(arg); 10784d92dc0fSBen Hutchings err = get_user(input.group, &uinput->group); 10794d92dc0fSBen Hutchings err |= get_user(input.block_bitmap, &uinput->block_bitmap); 10804d92dc0fSBen Hutchings err |= get_user(input.inode_bitmap, &uinput->inode_bitmap); 10814d92dc0fSBen Hutchings err |= get_user(input.inode_table, &uinput->inode_table); 10824d92dc0fSBen Hutchings err |= get_user(input.blocks_count, &uinput->blocks_count); 10834d92dc0fSBen Hutchings err |= get_user(input.reserved_blocks, 10844d92dc0fSBen Hutchings &uinput->reserved_blocks); 10854d92dc0fSBen Hutchings if (err) 10864d92dc0fSBen Hutchings return -EFAULT; 10874d92dc0fSBen Hutchings old_fs = get_fs(); 10884d92dc0fSBen Hutchings set_fs(KERNEL_DS); 10894d92dc0fSBen Hutchings err = ext4_ioctl(file, EXT4_IOC_GROUP_ADD, 10904d92dc0fSBen Hutchings (unsigned long) &input); 10914d92dc0fSBen Hutchings set_fs(old_fs); 10924d92dc0fSBen Hutchings return err; 10934d92dc0fSBen Hutchings } 1094b684b2eeSChristian Borntraeger case EXT4_IOC_MOVE_EXT: 109519c5246dSYongqiang Yang case EXT4_IOC_RESIZE_FS: 10967869a4a6STheodore Ts'o case EXT4_IOC_PRECACHE_EXTENTS: 10979bd8212fSMichael Halcrow case EXT4_IOC_SET_ENCRYPTION_POLICY: 10989bd8212fSMichael Halcrow case EXT4_IOC_GET_ENCRYPTION_PWSALT: 10999bd8212fSMichael Halcrow case EXT4_IOC_GET_ENCRYPTION_POLICY: 1100e9be2ac7STheodore Ts'o case EXT4_IOC_SHUTDOWN: 11010c9ec4beSDarrick J. Wong case FS_IOC_GETFSMAP: 1102b684b2eeSChristian Borntraeger break; 1103ac27a0ecSDave Kleikamp default: 1104ac27a0ecSDave Kleikamp return -ENOIOCTLCMD; 1105ac27a0ecSDave Kleikamp } 11065cdd7b2dSAndi Kleen return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); 1107ac27a0ecSDave Kleikamp } 1108ac27a0ecSDave Kleikamp #endif 1109