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> 11dab291afSMingming Cao #include <linux/jbd2.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> 17ac27a0ecSDave Kleikamp #include <asm/uaccess.h> 183dcf5451SChristoph Hellwig #include "ext4_jbd2.h" 193dcf5451SChristoph Hellwig #include "ext4.h" 20ac27a0ecSDave Kleikamp 2119c5246dSYongqiang Yang #define MAX_32_NUM ((((unsigned long long) 1) << 32) - 1) 2219c5246dSYongqiang Yang 23393d1d1dSDr. Tilmann Bubeck /** 24393d1d1dSDr. Tilmann Bubeck * Swap memory between @a and @b for @len bytes. 25393d1d1dSDr. Tilmann Bubeck * 26393d1d1dSDr. Tilmann Bubeck * @a: pointer to first memory area 27393d1d1dSDr. Tilmann Bubeck * @b: pointer to second memory area 28393d1d1dSDr. Tilmann Bubeck * @len: number of bytes to swap 29393d1d1dSDr. Tilmann Bubeck * 30393d1d1dSDr. Tilmann Bubeck */ 31393d1d1dSDr. Tilmann Bubeck static void memswap(void *a, void *b, size_t len) 32393d1d1dSDr. Tilmann Bubeck { 33393d1d1dSDr. Tilmann Bubeck unsigned char *ap, *bp; 34393d1d1dSDr. Tilmann Bubeck unsigned char tmp; 35393d1d1dSDr. Tilmann Bubeck 36393d1d1dSDr. Tilmann Bubeck ap = (unsigned char *)a; 37393d1d1dSDr. Tilmann Bubeck bp = (unsigned char *)b; 38393d1d1dSDr. Tilmann Bubeck while (len-- > 0) { 39393d1d1dSDr. Tilmann Bubeck tmp = *ap; 40393d1d1dSDr. Tilmann Bubeck *ap = *bp; 41393d1d1dSDr. Tilmann Bubeck *bp = tmp; 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); 81cde2d7a7STheodore Ts'o ext4_es_lru_del(inode1); 82cde2d7a7STheodore Ts'o ext4_es_lru_del(inode2); 83393d1d1dSDr. Tilmann Bubeck 84393d1d1dSDr. Tilmann Bubeck isize = i_size_read(inode1); 85393d1d1dSDr. Tilmann Bubeck i_size_write(inode1, i_size_read(inode2)); 86393d1d1dSDr. Tilmann Bubeck i_size_write(inode2, isize); 87393d1d1dSDr. Tilmann Bubeck } 88393d1d1dSDr. Tilmann Bubeck 89393d1d1dSDr. Tilmann Bubeck /** 90393d1d1dSDr. Tilmann Bubeck * Swap the information from the given @inode and the inode 91393d1d1dSDr. Tilmann Bubeck * EXT4_BOOT_LOADER_INO. It will basically swap i_data and all other 92393d1d1dSDr. Tilmann Bubeck * important fields of the inodes. 93393d1d1dSDr. Tilmann Bubeck * 94393d1d1dSDr. Tilmann Bubeck * @sb: the super block of the filesystem 95393d1d1dSDr. Tilmann Bubeck * @inode: the inode to swap with EXT4_BOOT_LOADER_INO 96393d1d1dSDr. Tilmann Bubeck * 97393d1d1dSDr. Tilmann Bubeck */ 98393d1d1dSDr. Tilmann Bubeck static long swap_inode_boot_loader(struct super_block *sb, 99393d1d1dSDr. Tilmann Bubeck struct inode *inode) 100393d1d1dSDr. Tilmann Bubeck { 101393d1d1dSDr. Tilmann Bubeck handle_t *handle; 102393d1d1dSDr. Tilmann Bubeck int err; 103393d1d1dSDr. Tilmann Bubeck struct inode *inode_bl; 104393d1d1dSDr. Tilmann Bubeck struct ext4_inode_info *ei_bl; 105d7092ae2Sjon ernst struct ext4_sb_info *sbi = EXT4_SB(sb); 106393d1d1dSDr. Tilmann Bubeck 107393d1d1dSDr. Tilmann Bubeck if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode)) { 108393d1d1dSDr. Tilmann Bubeck err = -EINVAL; 109393d1d1dSDr. Tilmann Bubeck goto swap_boot_out; 110393d1d1dSDr. Tilmann Bubeck } 111393d1d1dSDr. Tilmann Bubeck 112393d1d1dSDr. Tilmann Bubeck if (!inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN)) { 113393d1d1dSDr. Tilmann Bubeck err = -EPERM; 114393d1d1dSDr. Tilmann Bubeck goto swap_boot_out; 115393d1d1dSDr. Tilmann Bubeck } 116393d1d1dSDr. Tilmann Bubeck 117393d1d1dSDr. Tilmann Bubeck inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO); 118393d1d1dSDr. Tilmann Bubeck if (IS_ERR(inode_bl)) { 119393d1d1dSDr. Tilmann Bubeck err = PTR_ERR(inode_bl); 120393d1d1dSDr. Tilmann Bubeck goto swap_boot_out; 121393d1d1dSDr. Tilmann Bubeck } 122393d1d1dSDr. Tilmann Bubeck ei_bl = EXT4_I(inode_bl); 123393d1d1dSDr. Tilmann Bubeck 124393d1d1dSDr. Tilmann Bubeck filemap_flush(inode->i_mapping); 125393d1d1dSDr. Tilmann Bubeck filemap_flush(inode_bl->i_mapping); 126393d1d1dSDr. Tilmann Bubeck 127393d1d1dSDr. Tilmann Bubeck /* Protect orig inodes against a truncate and make sure, 128393d1d1dSDr. Tilmann Bubeck * that only 1 swap_inode_boot_loader is running. */ 129375e289eSJ. Bruce Fields lock_two_nondirectories(inode, inode_bl); 130393d1d1dSDr. Tilmann Bubeck 131393d1d1dSDr. Tilmann Bubeck truncate_inode_pages(&inode->i_data, 0); 132393d1d1dSDr. Tilmann Bubeck truncate_inode_pages(&inode_bl->i_data, 0); 133393d1d1dSDr. Tilmann Bubeck 134393d1d1dSDr. Tilmann Bubeck /* Wait for all existing dio workers */ 135393d1d1dSDr. Tilmann Bubeck ext4_inode_block_unlocked_dio(inode); 136393d1d1dSDr. Tilmann Bubeck ext4_inode_block_unlocked_dio(inode_bl); 137393d1d1dSDr. Tilmann Bubeck inode_dio_wait(inode); 138393d1d1dSDr. Tilmann Bubeck inode_dio_wait(inode_bl); 139393d1d1dSDr. Tilmann Bubeck 140393d1d1dSDr. Tilmann Bubeck handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2); 141393d1d1dSDr. Tilmann Bubeck if (IS_ERR(handle)) { 142393d1d1dSDr. Tilmann Bubeck err = -EINVAL; 14330d29b11SZheng Liu goto journal_err_out; 144393d1d1dSDr. Tilmann Bubeck } 145393d1d1dSDr. Tilmann Bubeck 146393d1d1dSDr. Tilmann Bubeck /* Protect extent tree against block allocations via delalloc */ 147393d1d1dSDr. Tilmann Bubeck ext4_double_down_write_data_sem(inode, inode_bl); 148393d1d1dSDr. Tilmann Bubeck 149393d1d1dSDr. Tilmann Bubeck if (inode_bl->i_nlink == 0) { 150393d1d1dSDr. Tilmann Bubeck /* this inode has never been used as a BOOT_LOADER */ 151393d1d1dSDr. Tilmann Bubeck set_nlink(inode_bl, 1); 152393d1d1dSDr. Tilmann Bubeck i_uid_write(inode_bl, 0); 153393d1d1dSDr. Tilmann Bubeck i_gid_write(inode_bl, 0); 154393d1d1dSDr. Tilmann Bubeck inode_bl->i_flags = 0; 155393d1d1dSDr. Tilmann Bubeck ei_bl->i_flags = 0; 156393d1d1dSDr. Tilmann Bubeck inode_bl->i_version = 1; 157393d1d1dSDr. Tilmann Bubeck i_size_write(inode_bl, 0); 158393d1d1dSDr. Tilmann Bubeck inode_bl->i_mode = S_IFREG; 159393d1d1dSDr. Tilmann Bubeck if (EXT4_HAS_INCOMPAT_FEATURE(sb, 160393d1d1dSDr. Tilmann Bubeck EXT4_FEATURE_INCOMPAT_EXTENTS)) { 161393d1d1dSDr. Tilmann Bubeck ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS); 162393d1d1dSDr. Tilmann Bubeck ext4_ext_tree_init(handle, inode_bl); 163393d1d1dSDr. Tilmann Bubeck } else 164393d1d1dSDr. Tilmann Bubeck memset(ei_bl->i_data, 0, sizeof(ei_bl->i_data)); 165393d1d1dSDr. Tilmann Bubeck } 166393d1d1dSDr. Tilmann Bubeck 167393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 168393d1d1dSDr. Tilmann Bubeck 169393d1d1dSDr. Tilmann Bubeck inode->i_ctime = inode_bl->i_ctime = ext4_current_time(inode); 170393d1d1dSDr. Tilmann Bubeck 171393d1d1dSDr. Tilmann Bubeck spin_lock(&sbi->s_next_gen_lock); 172393d1d1dSDr. Tilmann Bubeck inode->i_generation = sbi->s_next_generation++; 173393d1d1dSDr. Tilmann Bubeck inode_bl->i_generation = sbi->s_next_generation++; 174393d1d1dSDr. Tilmann Bubeck spin_unlock(&sbi->s_next_gen_lock); 175393d1d1dSDr. Tilmann Bubeck 176393d1d1dSDr. Tilmann Bubeck ext4_discard_preallocations(inode); 177393d1d1dSDr. Tilmann Bubeck 178393d1d1dSDr. Tilmann Bubeck err = ext4_mark_inode_dirty(handle, inode); 179393d1d1dSDr. Tilmann Bubeck if (err < 0) { 180393d1d1dSDr. Tilmann Bubeck ext4_warning(inode->i_sb, 181393d1d1dSDr. Tilmann Bubeck "couldn't mark inode #%lu dirty (err %d)", 182393d1d1dSDr. Tilmann Bubeck inode->i_ino, err); 183393d1d1dSDr. Tilmann Bubeck /* Revert all changes: */ 184393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 185393d1d1dSDr. Tilmann Bubeck } else { 186393d1d1dSDr. Tilmann Bubeck err = ext4_mark_inode_dirty(handle, inode_bl); 187393d1d1dSDr. Tilmann Bubeck if (err < 0) { 188393d1d1dSDr. Tilmann Bubeck ext4_warning(inode_bl->i_sb, 189393d1d1dSDr. Tilmann Bubeck "couldn't mark inode #%lu dirty (err %d)", 190393d1d1dSDr. Tilmann Bubeck inode_bl->i_ino, err); 191393d1d1dSDr. Tilmann Bubeck /* Revert all changes: */ 192393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 193393d1d1dSDr. Tilmann Bubeck ext4_mark_inode_dirty(handle, inode); 194393d1d1dSDr. Tilmann Bubeck } 195393d1d1dSDr. Tilmann Bubeck } 196393d1d1dSDr. Tilmann Bubeck 197393d1d1dSDr. Tilmann Bubeck ext4_journal_stop(handle); 198393d1d1dSDr. Tilmann Bubeck 199393d1d1dSDr. Tilmann Bubeck ext4_double_up_write_data_sem(inode, inode_bl); 200393d1d1dSDr. Tilmann Bubeck 20130d29b11SZheng Liu journal_err_out: 202393d1d1dSDr. Tilmann Bubeck ext4_inode_resume_unlocked_dio(inode); 203393d1d1dSDr. Tilmann Bubeck ext4_inode_resume_unlocked_dio(inode_bl); 204393d1d1dSDr. Tilmann Bubeck 205375e289eSJ. Bruce Fields unlock_two_nondirectories(inode, inode_bl); 206393d1d1dSDr. Tilmann Bubeck 207393d1d1dSDr. Tilmann Bubeck iput(inode_bl); 208393d1d1dSDr. Tilmann Bubeck 209393d1d1dSDr. Tilmann Bubeck swap_boot_out: 210393d1d1dSDr. Tilmann Bubeck return err; 211393d1d1dSDr. Tilmann Bubeck } 212393d1d1dSDr. Tilmann Bubeck 2135cdd7b2dSAndi Kleen long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 214ac27a0ecSDave Kleikamp { 215496ad9aaSAl Viro struct inode *inode = file_inode(filp); 216bab08ab9STheodore Ts'o struct super_block *sb = inode->i_sb; 217617ba13bSMingming Cao struct ext4_inode_info *ei = EXT4_I(inode); 218ac27a0ecSDave Kleikamp unsigned int flags; 219ac27a0ecSDave Kleikamp 220617ba13bSMingming Cao ext4_debug("cmd = %u, arg = %lu\n", cmd, arg); 221ac27a0ecSDave Kleikamp 222ac27a0ecSDave Kleikamp switch (cmd) { 223617ba13bSMingming Cao case EXT4_IOC_GETFLAGS: 224ff9ddf7eSJan Kara ext4_get_inode_flags(ei); 225617ba13bSMingming Cao flags = ei->i_flags & EXT4_FL_USER_VISIBLE; 226ac27a0ecSDave Kleikamp return put_user(flags, (int __user *) arg); 227617ba13bSMingming Cao case EXT4_IOC_SETFLAGS: { 228ac27a0ecSDave Kleikamp handle_t *handle = NULL; 2294db46fc2SAneesh Kumar K.V int err, migrate = 0; 230617ba13bSMingming Cao struct ext4_iloc iloc; 23179906964STheodore Ts'o unsigned int oldflags, mask, i; 232ac27a0ecSDave Kleikamp unsigned int jflag; 233ac27a0ecSDave Kleikamp 2342e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 235ac27a0ecSDave Kleikamp return -EACCES; 236ac27a0ecSDave Kleikamp 237ac27a0ecSDave Kleikamp if (get_user(flags, (int __user *) arg)) 238ac27a0ecSDave Kleikamp return -EFAULT; 239ac27a0ecSDave Kleikamp 240a561be71SAl Viro err = mnt_want_write_file(filp); 24142a74f20SDave Hansen if (err) 24242a74f20SDave Hansen return err; 24342a74f20SDave Hansen 2442dc6b0d4SDuane Griffin flags = ext4_mask_flags(inode->i_mode, flags); 245ac27a0ecSDave Kleikamp 24642a74f20SDave Hansen err = -EPERM; 247ac27a0ecSDave Kleikamp mutex_lock(&inode->i_mutex); 248e47776a0SJan Kara /* Is it quota file? Do not allow user to mess with it */ 24942a74f20SDave Hansen if (IS_NOQUOTA(inode)) 25042a74f20SDave Hansen goto flags_out; 25142a74f20SDave Hansen 252ac27a0ecSDave Kleikamp oldflags = ei->i_flags; 253ac27a0ecSDave Kleikamp 254ac27a0ecSDave Kleikamp /* The JOURNAL_DATA flag is modifiable only by root */ 255617ba13bSMingming Cao jflag = flags & EXT4_JOURNAL_DATA_FL; 256ac27a0ecSDave Kleikamp 257ac27a0ecSDave Kleikamp /* 258ac27a0ecSDave Kleikamp * The IMMUTABLE and APPEND_ONLY flags can only be changed by 259ac27a0ecSDave Kleikamp * the relevant capability. 260ac27a0ecSDave Kleikamp * 261ac27a0ecSDave Kleikamp * This test looks nicer. Thanks to Pauline Middelink 262ac27a0ecSDave Kleikamp */ 263617ba13bSMingming Cao if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) { 26442a74f20SDave Hansen if (!capable(CAP_LINUX_IMMUTABLE)) 26542a74f20SDave Hansen goto flags_out; 266ac27a0ecSDave Kleikamp } 267ac27a0ecSDave Kleikamp 268ac27a0ecSDave Kleikamp /* 269ac27a0ecSDave Kleikamp * The JOURNAL_DATA flag can only be changed by 270ac27a0ecSDave Kleikamp * the relevant capability. 271ac27a0ecSDave Kleikamp */ 272617ba13bSMingming Cao if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { 27342a74f20SDave Hansen if (!capable(CAP_SYS_RESOURCE)) 27442a74f20SDave Hansen goto flags_out; 275ac27a0ecSDave Kleikamp } 276996bb9fdSTheodore Ts'o if ((flags ^ oldflags) & EXT4_EXTENTS_FL) 2774db46fc2SAneesh Kumar K.V migrate = 1; 278ac27a0ecSDave Kleikamp 279c8d46e41SJiaying Zhang if (flags & EXT4_EOFBLOCKS_FL) { 280c8d46e41SJiaying Zhang /* we don't support adding EOFBLOCKS flag */ 281c8d46e41SJiaying Zhang if (!(oldflags & EXT4_EOFBLOCKS_FL)) { 282c8d46e41SJiaying Zhang err = -EOPNOTSUPP; 283c8d46e41SJiaying Zhang goto flags_out; 284c8d46e41SJiaying Zhang } 285c8d46e41SJiaying Zhang } else if (oldflags & EXT4_EOFBLOCKS_FL) 286c8d46e41SJiaying Zhang ext4_truncate(inode); 287c8d46e41SJiaying Zhang 2889924a92aSTheodore Ts'o handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 289ac27a0ecSDave Kleikamp if (IS_ERR(handle)) { 29042a74f20SDave Hansen err = PTR_ERR(handle); 29142a74f20SDave Hansen goto flags_out; 292ac27a0ecSDave Kleikamp } 293ac27a0ecSDave Kleikamp if (IS_SYNC(inode)) 2940390131bSFrank Mayhar ext4_handle_sync(handle); 295617ba13bSMingming Cao err = ext4_reserve_inode_write(handle, inode, &iloc); 296ac27a0ecSDave Kleikamp if (err) 297ac27a0ecSDave Kleikamp goto flags_err; 298ac27a0ecSDave Kleikamp 29979906964STheodore Ts'o for (i = 0, mask = 1; i < 32; i++, mask <<= 1) { 30079906964STheodore Ts'o if (!(mask & EXT4_FL_USER_MODIFIABLE)) 30179906964STheodore Ts'o continue; 30279906964STheodore Ts'o if (mask & flags) 30379906964STheodore Ts'o ext4_set_inode_flag(inode, i); 30479906964STheodore Ts'o else 30579906964STheodore Ts'o ext4_clear_inode_flag(inode, i); 30679906964STheodore Ts'o } 307ac27a0ecSDave Kleikamp 308617ba13bSMingming Cao ext4_set_inode_flags(inode); 309ef7f3835SKalpak Shah inode->i_ctime = ext4_current_time(inode); 310ac27a0ecSDave Kleikamp 311617ba13bSMingming Cao err = ext4_mark_iloc_dirty(handle, inode, &iloc); 312ac27a0ecSDave Kleikamp flags_err: 313617ba13bSMingming Cao ext4_journal_stop(handle); 31442a74f20SDave Hansen if (err) 31542a74f20SDave Hansen goto flags_out; 316ac27a0ecSDave Kleikamp 317617ba13bSMingming Cao if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) 318617ba13bSMingming Cao err = ext4_change_inode_journal_flag(inode, jflag); 3194db46fc2SAneesh Kumar K.V if (err) 3204db46fc2SAneesh Kumar K.V goto flags_out; 321996bb9fdSTheodore Ts'o if (migrate) { 322996bb9fdSTheodore Ts'o if (flags & EXT4_EXTENTS_FL) 3234db46fc2SAneesh Kumar K.V err = ext4_ext_migrate(inode); 324996bb9fdSTheodore Ts'o else 325996bb9fdSTheodore Ts'o err = ext4_ind_migrate(inode); 326996bb9fdSTheodore Ts'o } 327996bb9fdSTheodore Ts'o 32842a74f20SDave Hansen flags_out: 329ac27a0ecSDave Kleikamp mutex_unlock(&inode->i_mutex); 3302a79f17eSAl Viro mnt_drop_write_file(filp); 331ac27a0ecSDave Kleikamp return err; 332ac27a0ecSDave Kleikamp } 333617ba13bSMingming Cao case EXT4_IOC_GETVERSION: 334617ba13bSMingming Cao case EXT4_IOC_GETVERSION_OLD: 335ac27a0ecSDave Kleikamp return put_user(inode->i_generation, (int __user *) arg); 336617ba13bSMingming Cao case EXT4_IOC_SETVERSION: 337617ba13bSMingming Cao case EXT4_IOC_SETVERSION_OLD: { 338ac27a0ecSDave Kleikamp handle_t *handle; 339617ba13bSMingming Cao struct ext4_iloc iloc; 340ac27a0ecSDave Kleikamp __u32 generation; 341ac27a0ecSDave Kleikamp int err; 342ac27a0ecSDave Kleikamp 3432e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 344ac27a0ecSDave Kleikamp return -EPERM; 34542a74f20SDave Hansen 346814525f4SDarrick J. Wong if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, 347814525f4SDarrick J. Wong EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) { 348814525f4SDarrick J. Wong ext4_warning(sb, "Setting inode version is not " 349814525f4SDarrick J. Wong "supported with metadata_csum enabled."); 350814525f4SDarrick J. Wong return -ENOTTY; 351814525f4SDarrick J. Wong } 352814525f4SDarrick J. Wong 353a561be71SAl Viro err = mnt_want_write_file(filp); 35442a74f20SDave Hansen if (err) 35542a74f20SDave Hansen return err; 35642a74f20SDave Hansen if (get_user(generation, (int __user *) arg)) { 35742a74f20SDave Hansen err = -EFAULT; 35842a74f20SDave Hansen goto setversion_out; 35942a74f20SDave Hansen } 360ac27a0ecSDave Kleikamp 3616c2155b9SDjalal Harouni mutex_lock(&inode->i_mutex); 3629924a92aSTheodore Ts'o handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 36342a74f20SDave Hansen if (IS_ERR(handle)) { 36442a74f20SDave Hansen err = PTR_ERR(handle); 3656c2155b9SDjalal Harouni goto unlock_out; 36642a74f20SDave Hansen } 367617ba13bSMingming Cao err = ext4_reserve_inode_write(handle, inode, &iloc); 368ac27a0ecSDave Kleikamp if (err == 0) { 369ef7f3835SKalpak Shah inode->i_ctime = ext4_current_time(inode); 370ac27a0ecSDave Kleikamp inode->i_generation = generation; 371617ba13bSMingming Cao err = ext4_mark_iloc_dirty(handle, inode, &iloc); 372ac27a0ecSDave Kleikamp } 373617ba13bSMingming Cao ext4_journal_stop(handle); 3746c2155b9SDjalal Harouni 3756c2155b9SDjalal Harouni unlock_out: 3766c2155b9SDjalal Harouni mutex_unlock(&inode->i_mutex); 37742a74f20SDave Hansen setversion_out: 3782a79f17eSAl Viro mnt_drop_write_file(filp); 379ac27a0ecSDave Kleikamp return err; 380ac27a0ecSDave Kleikamp } 381617ba13bSMingming Cao case EXT4_IOC_GROUP_EXTEND: { 382617ba13bSMingming Cao ext4_fsblk_t n_blocks_count; 383ac046f1dSPeng Tao int err, err2=0; 384ac27a0ecSDave Kleikamp 3858f82f840SYongqiang Yang err = ext4_resize_begin(sb); 3868f82f840SYongqiang Yang if (err) 3878f82f840SYongqiang Yang return err; 388ac27a0ecSDave Kleikamp 389014a1770SDjalal Harouni if (get_user(n_blocks_count, (__u32 __user *)arg)) { 390014a1770SDjalal Harouni err = -EFAULT; 391014a1770SDjalal Harouni goto group_extend_out; 392014a1770SDjalal Harouni } 393ac27a0ecSDave Kleikamp 394bab08ab9STheodore Ts'o if (EXT4_HAS_RO_COMPAT_FEATURE(sb, 395bab08ab9STheodore Ts'o EXT4_FEATURE_RO_COMPAT_BIGALLOC)) { 396bab08ab9STheodore Ts'o ext4_msg(sb, KERN_ERR, 397bab08ab9STheodore Ts'o "Online resizing not supported with bigalloc"); 398014a1770SDjalal Harouni err = -EOPNOTSUPP; 399014a1770SDjalal Harouni goto group_extend_out; 400bab08ab9STheodore Ts'o } 401bab08ab9STheodore Ts'o 402a561be71SAl Viro err = mnt_want_write_file(filp); 40342a74f20SDave Hansen if (err) 404014a1770SDjalal Harouni goto group_extend_out; 40542a74f20SDave Hansen 406617ba13bSMingming Cao err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count); 407ac046f1dSPeng Tao if (EXT4_SB(sb)->s_journal) { 408dab291afSMingming Cao jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 4097ffe1ea8SHidehiro Kawai err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 410dab291afSMingming Cao jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 411ac046f1dSPeng Tao } 4127ffe1ea8SHidehiro Kawai if (err == 0) 4137ffe1ea8SHidehiro Kawai err = err2; 4142a79f17eSAl Viro mnt_drop_write_file(filp); 415014a1770SDjalal Harouni group_extend_out: 4168f82f840SYongqiang Yang ext4_resize_end(sb); 417ac27a0ecSDave Kleikamp return err; 418ac27a0ecSDave Kleikamp } 419748de673SAkira Fujita 420748de673SAkira Fujita case EXT4_IOC_MOVE_EXT: { 421748de673SAkira Fujita struct move_extent me; 4222903ff01SAl Viro struct fd donor; 4232903ff01SAl Viro int err; 424748de673SAkira Fujita 4254a58579bSAkira Fujita if (!(filp->f_mode & FMODE_READ) || 4264a58579bSAkira Fujita !(filp->f_mode & FMODE_WRITE)) 4274a58579bSAkira Fujita return -EBADF; 4284a58579bSAkira Fujita 429748de673SAkira Fujita if (copy_from_user(&me, 430748de673SAkira Fujita (struct move_extent __user *)arg, sizeof(me))) 431748de673SAkira Fujita return -EFAULT; 4324a58579bSAkira Fujita me.moved_len = 0; 433748de673SAkira Fujita 4342903ff01SAl Viro donor = fdget(me.donor_fd); 4352903ff01SAl Viro if (!donor.file) 436748de673SAkira Fujita return -EBADF; 437748de673SAkira Fujita 4382903ff01SAl Viro if (!(donor.file->f_mode & FMODE_WRITE)) { 4394a58579bSAkira Fujita err = -EBADF; 4404a58579bSAkira Fujita goto mext_out; 441748de673SAkira Fujita } 442748de673SAkira Fujita 443bab08ab9STheodore Ts'o if (EXT4_HAS_RO_COMPAT_FEATURE(sb, 444bab08ab9STheodore Ts'o EXT4_FEATURE_RO_COMPAT_BIGALLOC)) { 445bab08ab9STheodore Ts'o ext4_msg(sb, KERN_ERR, 446bab08ab9STheodore Ts'o "Online defrag not supported with bigalloc"); 447399c9b86SAl Viro err = -EOPNOTSUPP; 448399c9b86SAl Viro goto mext_out; 449bab08ab9STheodore Ts'o } 450bab08ab9STheodore Ts'o 451a561be71SAl Viro err = mnt_want_write_file(filp); 4524a58579bSAkira Fujita if (err) 4534a58579bSAkira Fujita goto mext_out; 4544a58579bSAkira Fujita 4552903ff01SAl Viro err = ext4_move_extents(filp, donor.file, me.orig_start, 456748de673SAkira Fujita me.donor_start, me.len, &me.moved_len); 4572a79f17eSAl Viro mnt_drop_write_file(filp); 458748de673SAkira Fujita 459c437b273SAkira Fujita if (copy_to_user((struct move_extent __user *)arg, 460c437b273SAkira Fujita &me, sizeof(me))) 4614a58579bSAkira Fujita err = -EFAULT; 4624a58579bSAkira Fujita mext_out: 4632903ff01SAl Viro fdput(donor); 464748de673SAkira Fujita return err; 465748de673SAkira Fujita } 466748de673SAkira Fujita 467617ba13bSMingming Cao case EXT4_IOC_GROUP_ADD: { 468617ba13bSMingming Cao struct ext4_new_group_data input; 469ac046f1dSPeng Tao int err, err2=0; 470ac27a0ecSDave Kleikamp 4718f82f840SYongqiang Yang err = ext4_resize_begin(sb); 4728f82f840SYongqiang Yang if (err) 4738f82f840SYongqiang Yang return err; 474ac27a0ecSDave Kleikamp 475617ba13bSMingming Cao if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg, 476014a1770SDjalal Harouni sizeof(input))) { 477014a1770SDjalal Harouni err = -EFAULT; 478014a1770SDjalal Harouni goto group_add_out; 479014a1770SDjalal Harouni } 480ac27a0ecSDave Kleikamp 481bab08ab9STheodore Ts'o if (EXT4_HAS_RO_COMPAT_FEATURE(sb, 482bab08ab9STheodore Ts'o EXT4_FEATURE_RO_COMPAT_BIGALLOC)) { 483bab08ab9STheodore Ts'o ext4_msg(sb, KERN_ERR, 484bab08ab9STheodore Ts'o "Online resizing not supported with bigalloc"); 485014a1770SDjalal Harouni err = -EOPNOTSUPP; 486014a1770SDjalal Harouni goto group_add_out; 487bab08ab9STheodore Ts'o } 488bab08ab9STheodore Ts'o 489a561be71SAl Viro err = mnt_want_write_file(filp); 49042a74f20SDave Hansen if (err) 491014a1770SDjalal Harouni goto group_add_out; 49242a74f20SDave Hansen 493617ba13bSMingming Cao err = ext4_group_add(sb, &input); 494ac046f1dSPeng Tao if (EXT4_SB(sb)->s_journal) { 495dab291afSMingming Cao jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 4967ffe1ea8SHidehiro Kawai err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 497dab291afSMingming Cao jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 498ac046f1dSPeng Tao } 4997ffe1ea8SHidehiro Kawai if (err == 0) 5007ffe1ea8SHidehiro Kawai err = err2; 5012a79f17eSAl Viro mnt_drop_write_file(filp); 5027f511862STheodore Ts'o if (!err && ext4_has_group_desc_csum(sb) && 5037f511862STheodore Ts'o test_opt(sb, INIT_INODE_TABLE)) 5047f511862STheodore Ts'o err = ext4_register_li_request(sb, input.group); 505014a1770SDjalal Harouni group_add_out: 5068f82f840SYongqiang Yang ext4_resize_end(sb); 507ac27a0ecSDave Kleikamp return err; 508ac27a0ecSDave Kleikamp } 509ac27a0ecSDave Kleikamp 510c14c6fd5SAneesh Kumar K.V case EXT4_IOC_MIGRATE: 5112a43a878SAneesh Kumar K.V { 5122a43a878SAneesh Kumar K.V int err; 5132e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 5142a43a878SAneesh Kumar K.V return -EACCES; 5152a43a878SAneesh Kumar K.V 516a561be71SAl Viro err = mnt_want_write_file(filp); 5172a43a878SAneesh Kumar K.V if (err) 5182a43a878SAneesh Kumar K.V return err; 5192a43a878SAneesh Kumar K.V /* 5202a43a878SAneesh Kumar K.V * inode_mutex prevent write and truncate on the file. 5212a43a878SAneesh Kumar K.V * Read still goes through. We take i_data_sem in 5222a43a878SAneesh Kumar K.V * ext4_ext_swap_inode_data before we switch the 5232a43a878SAneesh Kumar K.V * inode format to prevent read. 5242a43a878SAneesh Kumar K.V */ 5252a43a878SAneesh Kumar K.V mutex_lock(&(inode->i_mutex)); 5262a43a878SAneesh Kumar K.V err = ext4_ext_migrate(inode); 5272a43a878SAneesh Kumar K.V mutex_unlock(&(inode->i_mutex)); 5282a79f17eSAl Viro mnt_drop_write_file(filp); 5292a43a878SAneesh Kumar K.V return err; 5302a43a878SAneesh Kumar K.V } 531c14c6fd5SAneesh Kumar K.V 532ccd2506bSTheodore Ts'o case EXT4_IOC_ALLOC_DA_BLKS: 533ccd2506bSTheodore Ts'o { 534ccd2506bSTheodore Ts'o int err; 5352e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 536ccd2506bSTheodore Ts'o return -EACCES; 537ccd2506bSTheodore Ts'o 538a561be71SAl Viro err = mnt_want_write_file(filp); 539ccd2506bSTheodore Ts'o if (err) 540ccd2506bSTheodore Ts'o return err; 541ccd2506bSTheodore Ts'o err = ext4_alloc_da_blocks(inode); 5422a79f17eSAl Viro mnt_drop_write_file(filp); 543ccd2506bSTheodore Ts'o return err; 544ccd2506bSTheodore Ts'o } 545ccd2506bSTheodore Ts'o 546393d1d1dSDr. Tilmann Bubeck case EXT4_IOC_SWAP_BOOT: 547393d1d1dSDr. Tilmann Bubeck if (!(filp->f_mode & FMODE_WRITE)) 548393d1d1dSDr. Tilmann Bubeck return -EBADF; 549393d1d1dSDr. Tilmann Bubeck return swap_inode_boot_loader(sb, inode); 550393d1d1dSDr. Tilmann Bubeck 55119c5246dSYongqiang Yang case EXT4_IOC_RESIZE_FS: { 55219c5246dSYongqiang Yang ext4_fsblk_t n_blocks_count; 55319c5246dSYongqiang Yang int err = 0, err2 = 0; 5547f511862STheodore Ts'o ext4_group_t o_group = EXT4_SB(sb)->s_groups_count; 55519c5246dSYongqiang Yang 55619c5246dSYongqiang Yang if (EXT4_HAS_RO_COMPAT_FEATURE(sb, 55719c5246dSYongqiang Yang EXT4_FEATURE_RO_COMPAT_BIGALLOC)) { 55819c5246dSYongqiang Yang ext4_msg(sb, KERN_ERR, 55919c5246dSYongqiang Yang "Online resizing not (yet) supported with bigalloc"); 56019c5246dSYongqiang Yang return -EOPNOTSUPP; 56119c5246dSYongqiang Yang } 56219c5246dSYongqiang Yang 56319c5246dSYongqiang Yang if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, 56419c5246dSYongqiang Yang sizeof(__u64))) { 56519c5246dSYongqiang Yang return -EFAULT; 56619c5246dSYongqiang Yang } 56719c5246dSYongqiang Yang 56819c5246dSYongqiang Yang err = ext4_resize_begin(sb); 56919c5246dSYongqiang Yang if (err) 57019c5246dSYongqiang Yang return err; 57119c5246dSYongqiang Yang 5728cae6f71SAl Viro err = mnt_want_write_file(filp); 57319c5246dSYongqiang Yang if (err) 57419c5246dSYongqiang Yang goto resizefs_out; 57519c5246dSYongqiang Yang 57619c5246dSYongqiang Yang err = ext4_resize_fs(sb, n_blocks_count); 57719c5246dSYongqiang Yang if (EXT4_SB(sb)->s_journal) { 57819c5246dSYongqiang Yang jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 57919c5246dSYongqiang Yang err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 58019c5246dSYongqiang Yang jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 58119c5246dSYongqiang Yang } 58219c5246dSYongqiang Yang if (err == 0) 58319c5246dSYongqiang Yang err = err2; 5848cae6f71SAl Viro mnt_drop_write_file(filp); 5857f511862STheodore Ts'o if (!err && (o_group > EXT4_SB(sb)->s_groups_count) && 5867f511862STheodore Ts'o ext4_has_group_desc_csum(sb) && 5877f511862STheodore Ts'o test_opt(sb, INIT_INODE_TABLE)) 5887f511862STheodore Ts'o err = ext4_register_li_request(sb, o_group); 5897f511862STheodore Ts'o 59019c5246dSYongqiang Yang resizefs_out: 59119c5246dSYongqiang Yang ext4_resize_end(sb); 59219c5246dSYongqiang Yang return err; 59319c5246dSYongqiang Yang } 59419c5246dSYongqiang Yang 595e681c047SLukas Czerner case FITRIM: 596e681c047SLukas Czerner { 59741431792SLukas Czerner struct request_queue *q = bdev_get_queue(sb->s_bdev); 598e681c047SLukas Czerner struct fstrim_range range; 599e681c047SLukas Czerner int ret = 0; 600e681c047SLukas Czerner 601e681c047SLukas Czerner if (!capable(CAP_SYS_ADMIN)) 602e681c047SLukas Czerner return -EPERM; 603e681c047SLukas Czerner 60441431792SLukas Czerner if (!blk_queue_discard(q)) 60541431792SLukas Czerner return -EOPNOTSUPP; 60641431792SLukas Czerner 607e6705f7cSH Hartley Sweeten if (copy_from_user(&range, (struct fstrim_range __user *)arg, 608e681c047SLukas Czerner sizeof(range))) 609e681c047SLukas Czerner return -EFAULT; 610e681c047SLukas Czerner 6115c2ed62fSLukas Czerner range.minlen = max((unsigned int)range.minlen, 6125c2ed62fSLukas Czerner q->limits.discard_granularity); 613e681c047SLukas Czerner ret = ext4_trim_fs(sb, &range); 614e681c047SLukas Czerner if (ret < 0) 615e681c047SLukas Czerner return ret; 616e681c047SLukas Czerner 617e6705f7cSH Hartley Sweeten if (copy_to_user((struct fstrim_range __user *)arg, &range, 618e681c047SLukas Czerner sizeof(range))) 619e681c047SLukas Czerner return -EFAULT; 620e681c047SLukas Czerner 621e681c047SLukas Czerner return 0; 622e681c047SLukas Czerner } 6237869a4a6STheodore Ts'o case EXT4_IOC_PRECACHE_EXTENTS: 6247869a4a6STheodore Ts'o return ext4_ext_precache(inode); 625e681c047SLukas Czerner 626ac27a0ecSDave Kleikamp default: 627ac27a0ecSDave Kleikamp return -ENOTTY; 628ac27a0ecSDave Kleikamp } 629ac27a0ecSDave Kleikamp } 630ac27a0ecSDave Kleikamp 631ac27a0ecSDave Kleikamp #ifdef CONFIG_COMPAT 632617ba13bSMingming Cao long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 633ac27a0ecSDave Kleikamp { 634ac27a0ecSDave Kleikamp /* These are just misnamed, they actually get/put from/to user an int */ 635ac27a0ecSDave Kleikamp switch (cmd) { 636617ba13bSMingming Cao case EXT4_IOC32_GETFLAGS: 637617ba13bSMingming Cao cmd = EXT4_IOC_GETFLAGS; 638ac27a0ecSDave Kleikamp break; 639617ba13bSMingming Cao case EXT4_IOC32_SETFLAGS: 640617ba13bSMingming Cao cmd = EXT4_IOC_SETFLAGS; 641ac27a0ecSDave Kleikamp break; 642617ba13bSMingming Cao case EXT4_IOC32_GETVERSION: 643617ba13bSMingming Cao cmd = EXT4_IOC_GETVERSION; 644ac27a0ecSDave Kleikamp break; 645617ba13bSMingming Cao case EXT4_IOC32_SETVERSION: 646617ba13bSMingming Cao cmd = EXT4_IOC_SETVERSION; 647ac27a0ecSDave Kleikamp break; 648617ba13bSMingming Cao case EXT4_IOC32_GROUP_EXTEND: 649617ba13bSMingming Cao cmd = EXT4_IOC_GROUP_EXTEND; 650ac27a0ecSDave Kleikamp break; 651617ba13bSMingming Cao case EXT4_IOC32_GETVERSION_OLD: 652617ba13bSMingming Cao cmd = EXT4_IOC_GETVERSION_OLD; 653ac27a0ecSDave Kleikamp break; 654617ba13bSMingming Cao case EXT4_IOC32_SETVERSION_OLD: 655617ba13bSMingming Cao cmd = EXT4_IOC_SETVERSION_OLD; 656ac27a0ecSDave Kleikamp break; 657617ba13bSMingming Cao case EXT4_IOC32_GETRSVSZ: 658617ba13bSMingming Cao cmd = EXT4_IOC_GETRSVSZ; 659ac27a0ecSDave Kleikamp break; 660617ba13bSMingming Cao case EXT4_IOC32_SETRSVSZ: 661617ba13bSMingming Cao cmd = EXT4_IOC_SETRSVSZ; 662ac27a0ecSDave Kleikamp break; 6634d92dc0fSBen Hutchings case EXT4_IOC32_GROUP_ADD: { 6644d92dc0fSBen Hutchings struct compat_ext4_new_group_input __user *uinput; 6654d92dc0fSBen Hutchings struct ext4_new_group_input input; 6664d92dc0fSBen Hutchings mm_segment_t old_fs; 6674d92dc0fSBen Hutchings int err; 6684d92dc0fSBen Hutchings 6694d92dc0fSBen Hutchings uinput = compat_ptr(arg); 6704d92dc0fSBen Hutchings err = get_user(input.group, &uinput->group); 6714d92dc0fSBen Hutchings err |= get_user(input.block_bitmap, &uinput->block_bitmap); 6724d92dc0fSBen Hutchings err |= get_user(input.inode_bitmap, &uinput->inode_bitmap); 6734d92dc0fSBen Hutchings err |= get_user(input.inode_table, &uinput->inode_table); 6744d92dc0fSBen Hutchings err |= get_user(input.blocks_count, &uinput->blocks_count); 6754d92dc0fSBen Hutchings err |= get_user(input.reserved_blocks, 6764d92dc0fSBen Hutchings &uinput->reserved_blocks); 6774d92dc0fSBen Hutchings if (err) 6784d92dc0fSBen Hutchings return -EFAULT; 6794d92dc0fSBen Hutchings old_fs = get_fs(); 6804d92dc0fSBen Hutchings set_fs(KERNEL_DS); 6814d92dc0fSBen Hutchings err = ext4_ioctl(file, EXT4_IOC_GROUP_ADD, 6824d92dc0fSBen Hutchings (unsigned long) &input); 6834d92dc0fSBen Hutchings set_fs(old_fs); 6844d92dc0fSBen Hutchings return err; 6854d92dc0fSBen Hutchings } 686b684b2eeSChristian Borntraeger case EXT4_IOC_MOVE_EXT: 687a56e69c2STao Ma case FITRIM: 68819c5246dSYongqiang Yang case EXT4_IOC_RESIZE_FS: 6897869a4a6STheodore Ts'o case EXT4_IOC_PRECACHE_EXTENTS: 690b684b2eeSChristian Borntraeger break; 691ac27a0ecSDave Kleikamp default: 692ac27a0ecSDave Kleikamp return -ENOIOCTLCMD; 693ac27a0ecSDave Kleikamp } 6945cdd7b2dSAndi Kleen return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); 695ac27a0ecSDave Kleikamp } 696ac27a0ecSDave Kleikamp #endif 697