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> 169bd8212fSMichael Halcrow #include <linux/random.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 35393d1d1dSDr. Tilmann Bubeck ap = (unsigned char *)a; 36393d1d1dSDr. Tilmann Bubeck bp = (unsigned char *)b; 37393d1d1dSDr. Tilmann Bubeck while (len-- > 0) { 384b7e2db5SFabian Frederick swap(*ap, *bp); 39393d1d1dSDr. Tilmann Bubeck ap++; 40393d1d1dSDr. Tilmann Bubeck bp++; 41393d1d1dSDr. Tilmann Bubeck } 42393d1d1dSDr. Tilmann Bubeck } 43393d1d1dSDr. Tilmann Bubeck 44393d1d1dSDr. Tilmann Bubeck /** 45393d1d1dSDr. Tilmann Bubeck * Swap i_data and associated attributes between @inode1 and @inode2. 46393d1d1dSDr. Tilmann Bubeck * This function is used for the primary swap between inode1 and inode2 47393d1d1dSDr. Tilmann Bubeck * and also to revert this primary swap in case of errors. 48393d1d1dSDr. Tilmann Bubeck * 49393d1d1dSDr. Tilmann Bubeck * Therefore you have to make sure, that calling this method twice 50393d1d1dSDr. Tilmann Bubeck * will revert all changes. 51393d1d1dSDr. Tilmann Bubeck * 52393d1d1dSDr. Tilmann Bubeck * @inode1: pointer to first inode 53393d1d1dSDr. Tilmann Bubeck * @inode2: pointer to second inode 54393d1d1dSDr. Tilmann Bubeck */ 55393d1d1dSDr. Tilmann Bubeck static void swap_inode_data(struct inode *inode1, struct inode *inode2) 56393d1d1dSDr. Tilmann Bubeck { 57393d1d1dSDr. Tilmann Bubeck loff_t isize; 58393d1d1dSDr. Tilmann Bubeck struct ext4_inode_info *ei1; 59393d1d1dSDr. Tilmann Bubeck struct ext4_inode_info *ei2; 60393d1d1dSDr. Tilmann Bubeck 61393d1d1dSDr. Tilmann Bubeck ei1 = EXT4_I(inode1); 62393d1d1dSDr. Tilmann Bubeck ei2 = EXT4_I(inode2); 63393d1d1dSDr. Tilmann Bubeck 64393d1d1dSDr. Tilmann Bubeck memswap(&inode1->i_flags, &inode2->i_flags, sizeof(inode1->i_flags)); 65393d1d1dSDr. Tilmann Bubeck memswap(&inode1->i_version, &inode2->i_version, 66393d1d1dSDr. Tilmann Bubeck sizeof(inode1->i_version)); 67393d1d1dSDr. Tilmann Bubeck memswap(&inode1->i_blocks, &inode2->i_blocks, 68393d1d1dSDr. Tilmann Bubeck sizeof(inode1->i_blocks)); 69393d1d1dSDr. Tilmann Bubeck memswap(&inode1->i_bytes, &inode2->i_bytes, sizeof(inode1->i_bytes)); 70393d1d1dSDr. Tilmann Bubeck memswap(&inode1->i_atime, &inode2->i_atime, sizeof(inode1->i_atime)); 71393d1d1dSDr. Tilmann Bubeck memswap(&inode1->i_mtime, &inode2->i_mtime, sizeof(inode1->i_mtime)); 72393d1d1dSDr. Tilmann Bubeck 73393d1d1dSDr. Tilmann Bubeck memswap(ei1->i_data, ei2->i_data, sizeof(ei1->i_data)); 74393d1d1dSDr. Tilmann Bubeck memswap(&ei1->i_flags, &ei2->i_flags, sizeof(ei1->i_flags)); 75393d1d1dSDr. Tilmann Bubeck memswap(&ei1->i_disksize, &ei2->i_disksize, sizeof(ei1->i_disksize)); 76cde2d7a7STheodore Ts'o ext4_es_remove_extent(inode1, 0, EXT_MAX_BLOCKS); 77cde2d7a7STheodore Ts'o ext4_es_remove_extent(inode2, 0, EXT_MAX_BLOCKS); 78393d1d1dSDr. Tilmann Bubeck 79393d1d1dSDr. Tilmann Bubeck isize = i_size_read(inode1); 80393d1d1dSDr. Tilmann Bubeck i_size_write(inode1, i_size_read(inode2)); 81393d1d1dSDr. Tilmann Bubeck i_size_write(inode2, isize); 82393d1d1dSDr. Tilmann Bubeck } 83393d1d1dSDr. Tilmann Bubeck 84393d1d1dSDr. Tilmann Bubeck /** 85393d1d1dSDr. Tilmann Bubeck * Swap the information from the given @inode and the inode 86393d1d1dSDr. Tilmann Bubeck * EXT4_BOOT_LOADER_INO. It will basically swap i_data and all other 87393d1d1dSDr. Tilmann Bubeck * important fields of the inodes. 88393d1d1dSDr. Tilmann Bubeck * 89393d1d1dSDr. Tilmann Bubeck * @sb: the super block of the filesystem 90393d1d1dSDr. Tilmann Bubeck * @inode: the inode to swap with EXT4_BOOT_LOADER_INO 91393d1d1dSDr. Tilmann Bubeck * 92393d1d1dSDr. Tilmann Bubeck */ 93393d1d1dSDr. Tilmann Bubeck static long swap_inode_boot_loader(struct super_block *sb, 94393d1d1dSDr. Tilmann Bubeck struct inode *inode) 95393d1d1dSDr. Tilmann Bubeck { 96393d1d1dSDr. Tilmann Bubeck handle_t *handle; 97393d1d1dSDr. Tilmann Bubeck int err; 98393d1d1dSDr. Tilmann Bubeck struct inode *inode_bl; 99393d1d1dSDr. Tilmann Bubeck struct ext4_inode_info *ei_bl; 100d7092ae2Sjon ernst struct ext4_sb_info *sbi = EXT4_SB(sb); 101393d1d1dSDr. Tilmann Bubeck 102d8558a29STheodore Ts'o if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode)) 103d8558a29STheodore Ts'o return -EINVAL; 104393d1d1dSDr. Tilmann Bubeck 105d8558a29STheodore Ts'o if (!inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN)) 106d8558a29STheodore Ts'o return -EPERM; 107393d1d1dSDr. Tilmann Bubeck 108393d1d1dSDr. Tilmann Bubeck inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO); 109d8558a29STheodore Ts'o if (IS_ERR(inode_bl)) 110d8558a29STheodore Ts'o return PTR_ERR(inode_bl); 111393d1d1dSDr. Tilmann Bubeck ei_bl = EXT4_I(inode_bl); 112393d1d1dSDr. Tilmann Bubeck 113393d1d1dSDr. Tilmann Bubeck filemap_flush(inode->i_mapping); 114393d1d1dSDr. Tilmann Bubeck filemap_flush(inode_bl->i_mapping); 115393d1d1dSDr. Tilmann Bubeck 116393d1d1dSDr. Tilmann Bubeck /* Protect orig inodes against a truncate and make sure, 117393d1d1dSDr. Tilmann Bubeck * that only 1 swap_inode_boot_loader is running. */ 118375e289eSJ. Bruce Fields lock_two_nondirectories(inode, inode_bl); 119393d1d1dSDr. Tilmann Bubeck 120393d1d1dSDr. Tilmann Bubeck truncate_inode_pages(&inode->i_data, 0); 121393d1d1dSDr. Tilmann Bubeck truncate_inode_pages(&inode_bl->i_data, 0); 122393d1d1dSDr. Tilmann Bubeck 123393d1d1dSDr. Tilmann Bubeck /* Wait for all existing dio workers */ 124393d1d1dSDr. Tilmann Bubeck ext4_inode_block_unlocked_dio(inode); 125393d1d1dSDr. Tilmann Bubeck ext4_inode_block_unlocked_dio(inode_bl); 126393d1d1dSDr. Tilmann Bubeck inode_dio_wait(inode); 127393d1d1dSDr. Tilmann Bubeck inode_dio_wait(inode_bl); 128393d1d1dSDr. Tilmann Bubeck 129393d1d1dSDr. Tilmann Bubeck handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2); 130393d1d1dSDr. Tilmann Bubeck if (IS_ERR(handle)) { 131393d1d1dSDr. Tilmann Bubeck err = -EINVAL; 13230d29b11SZheng Liu goto journal_err_out; 133393d1d1dSDr. Tilmann Bubeck } 134393d1d1dSDr. Tilmann Bubeck 135393d1d1dSDr. Tilmann Bubeck /* Protect extent tree against block allocations via delalloc */ 136393d1d1dSDr. Tilmann Bubeck ext4_double_down_write_data_sem(inode, inode_bl); 137393d1d1dSDr. Tilmann Bubeck 138393d1d1dSDr. Tilmann Bubeck if (inode_bl->i_nlink == 0) { 139393d1d1dSDr. Tilmann Bubeck /* this inode has never been used as a BOOT_LOADER */ 140393d1d1dSDr. Tilmann Bubeck set_nlink(inode_bl, 1); 141393d1d1dSDr. Tilmann Bubeck i_uid_write(inode_bl, 0); 142393d1d1dSDr. Tilmann Bubeck i_gid_write(inode_bl, 0); 143393d1d1dSDr. Tilmann Bubeck inode_bl->i_flags = 0; 144393d1d1dSDr. Tilmann Bubeck ei_bl->i_flags = 0; 145393d1d1dSDr. Tilmann Bubeck inode_bl->i_version = 1; 146393d1d1dSDr. Tilmann Bubeck i_size_write(inode_bl, 0); 147393d1d1dSDr. Tilmann Bubeck inode_bl->i_mode = S_IFREG; 148e2b911c5SDarrick J. Wong if (ext4_has_feature_extents(sb)) { 149393d1d1dSDr. Tilmann Bubeck ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS); 150393d1d1dSDr. Tilmann Bubeck ext4_ext_tree_init(handle, inode_bl); 151393d1d1dSDr. Tilmann Bubeck } else 152393d1d1dSDr. Tilmann Bubeck memset(ei_bl->i_data, 0, sizeof(ei_bl->i_data)); 153393d1d1dSDr. Tilmann Bubeck } 154393d1d1dSDr. Tilmann Bubeck 155393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 156393d1d1dSDr. Tilmann Bubeck 157393d1d1dSDr. Tilmann Bubeck inode->i_ctime = inode_bl->i_ctime = ext4_current_time(inode); 158393d1d1dSDr. Tilmann Bubeck 159393d1d1dSDr. Tilmann Bubeck spin_lock(&sbi->s_next_gen_lock); 160393d1d1dSDr. Tilmann Bubeck inode->i_generation = sbi->s_next_generation++; 161393d1d1dSDr. Tilmann Bubeck inode_bl->i_generation = sbi->s_next_generation++; 162393d1d1dSDr. Tilmann Bubeck spin_unlock(&sbi->s_next_gen_lock); 163393d1d1dSDr. Tilmann Bubeck 164393d1d1dSDr. Tilmann Bubeck ext4_discard_preallocations(inode); 165393d1d1dSDr. Tilmann Bubeck 166393d1d1dSDr. Tilmann Bubeck err = ext4_mark_inode_dirty(handle, inode); 167393d1d1dSDr. Tilmann Bubeck if (err < 0) { 168393d1d1dSDr. Tilmann Bubeck ext4_warning(inode->i_sb, 169393d1d1dSDr. Tilmann Bubeck "couldn't mark inode #%lu dirty (err %d)", 170393d1d1dSDr. Tilmann Bubeck inode->i_ino, err); 171393d1d1dSDr. Tilmann Bubeck /* Revert all changes: */ 172393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 173393d1d1dSDr. Tilmann Bubeck } else { 174393d1d1dSDr. Tilmann Bubeck err = ext4_mark_inode_dirty(handle, inode_bl); 175393d1d1dSDr. Tilmann Bubeck if (err < 0) { 176393d1d1dSDr. Tilmann Bubeck ext4_warning(inode_bl->i_sb, 177393d1d1dSDr. Tilmann Bubeck "couldn't mark inode #%lu dirty (err %d)", 178393d1d1dSDr. Tilmann Bubeck inode_bl->i_ino, err); 179393d1d1dSDr. Tilmann Bubeck /* Revert all changes: */ 180393d1d1dSDr. Tilmann Bubeck swap_inode_data(inode, inode_bl); 181393d1d1dSDr. Tilmann Bubeck ext4_mark_inode_dirty(handle, inode); 182393d1d1dSDr. Tilmann Bubeck } 183393d1d1dSDr. Tilmann Bubeck } 184393d1d1dSDr. Tilmann Bubeck ext4_journal_stop(handle); 185393d1d1dSDr. Tilmann Bubeck ext4_double_up_write_data_sem(inode, inode_bl); 186393d1d1dSDr. Tilmann Bubeck 18730d29b11SZheng Liu journal_err_out: 188393d1d1dSDr. Tilmann Bubeck ext4_inode_resume_unlocked_dio(inode); 189393d1d1dSDr. Tilmann Bubeck ext4_inode_resume_unlocked_dio(inode_bl); 190375e289eSJ. Bruce Fields unlock_two_nondirectories(inode, inode_bl); 191393d1d1dSDr. Tilmann Bubeck iput(inode_bl); 192393d1d1dSDr. Tilmann Bubeck return err; 193393d1d1dSDr. Tilmann Bubeck } 194393d1d1dSDr. Tilmann Bubeck 1959bd8212fSMichael Halcrow static int uuid_is_zero(__u8 u[16]) 1969bd8212fSMichael Halcrow { 1979bd8212fSMichael Halcrow int i; 1989bd8212fSMichael Halcrow 1999bd8212fSMichael Halcrow for (i = 0; i < 16; i++) 2009bd8212fSMichael Halcrow if (u[i]) 2019bd8212fSMichael Halcrow return 0; 2029bd8212fSMichael Halcrow return 1; 2039bd8212fSMichael Halcrow } 2049bd8212fSMichael Halcrow 2055cdd7b2dSAndi Kleen long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 206ac27a0ecSDave Kleikamp { 207496ad9aaSAl Viro struct inode *inode = file_inode(filp); 208bab08ab9STheodore Ts'o struct super_block *sb = inode->i_sb; 209617ba13bSMingming Cao struct ext4_inode_info *ei = EXT4_I(inode); 210ac27a0ecSDave Kleikamp unsigned int flags; 211ac27a0ecSDave Kleikamp 212617ba13bSMingming Cao ext4_debug("cmd = %u, arg = %lu\n", cmd, arg); 213ac27a0ecSDave Kleikamp 214ac27a0ecSDave Kleikamp switch (cmd) { 215617ba13bSMingming Cao case EXT4_IOC_GETFLAGS: 216ff9ddf7eSJan Kara ext4_get_inode_flags(ei); 217617ba13bSMingming Cao flags = ei->i_flags & EXT4_FL_USER_VISIBLE; 218ac27a0ecSDave Kleikamp return put_user(flags, (int __user *) arg); 219617ba13bSMingming Cao case EXT4_IOC_SETFLAGS: { 220ac27a0ecSDave Kleikamp handle_t *handle = NULL; 2214db46fc2SAneesh Kumar K.V int err, migrate = 0; 222617ba13bSMingming Cao struct ext4_iloc iloc; 22379906964STheodore Ts'o unsigned int oldflags, mask, i; 224ac27a0ecSDave Kleikamp unsigned int jflag; 225ac27a0ecSDave Kleikamp 2262e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 227ac27a0ecSDave Kleikamp return -EACCES; 228ac27a0ecSDave Kleikamp 229ac27a0ecSDave Kleikamp if (get_user(flags, (int __user *) arg)) 230ac27a0ecSDave Kleikamp return -EFAULT; 231ac27a0ecSDave Kleikamp 232a561be71SAl Viro err = mnt_want_write_file(filp); 23342a74f20SDave Hansen if (err) 23442a74f20SDave Hansen return err; 23542a74f20SDave Hansen 2362dc6b0d4SDuane Griffin flags = ext4_mask_flags(inode->i_mode, flags); 237ac27a0ecSDave Kleikamp 23842a74f20SDave Hansen err = -EPERM; 239ac27a0ecSDave Kleikamp mutex_lock(&inode->i_mutex); 240e47776a0SJan Kara /* Is it quota file? Do not allow user to mess with it */ 24142a74f20SDave Hansen if (IS_NOQUOTA(inode)) 24242a74f20SDave Hansen goto flags_out; 24342a74f20SDave Hansen 244ac27a0ecSDave Kleikamp oldflags = ei->i_flags; 245ac27a0ecSDave Kleikamp 246ac27a0ecSDave Kleikamp /* The JOURNAL_DATA flag is modifiable only by root */ 247617ba13bSMingming Cao jflag = flags & EXT4_JOURNAL_DATA_FL; 248ac27a0ecSDave Kleikamp 249ac27a0ecSDave Kleikamp /* 250ac27a0ecSDave Kleikamp * The IMMUTABLE and APPEND_ONLY flags can only be changed by 251ac27a0ecSDave Kleikamp * the relevant capability. 252ac27a0ecSDave Kleikamp * 253ac27a0ecSDave Kleikamp * This test looks nicer. Thanks to Pauline Middelink 254ac27a0ecSDave Kleikamp */ 255617ba13bSMingming Cao if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) { 25642a74f20SDave Hansen if (!capable(CAP_LINUX_IMMUTABLE)) 25742a74f20SDave Hansen goto flags_out; 258ac27a0ecSDave Kleikamp } 259ac27a0ecSDave Kleikamp 260ac27a0ecSDave Kleikamp /* 261ac27a0ecSDave Kleikamp * The JOURNAL_DATA flag can only be changed by 262ac27a0ecSDave Kleikamp * the relevant capability. 263ac27a0ecSDave Kleikamp */ 264617ba13bSMingming Cao if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { 26542a74f20SDave Hansen if (!capable(CAP_SYS_RESOURCE)) 26642a74f20SDave Hansen goto flags_out; 267ac27a0ecSDave Kleikamp } 268996bb9fdSTheodore Ts'o if ((flags ^ oldflags) & EXT4_EXTENTS_FL) 2694db46fc2SAneesh Kumar K.V migrate = 1; 270ac27a0ecSDave Kleikamp 271c8d46e41SJiaying Zhang if (flags & EXT4_EOFBLOCKS_FL) { 272c8d46e41SJiaying Zhang /* we don't support adding EOFBLOCKS flag */ 273c8d46e41SJiaying Zhang if (!(oldflags & EXT4_EOFBLOCKS_FL)) { 274c8d46e41SJiaying Zhang err = -EOPNOTSUPP; 275c8d46e41SJiaying Zhang goto flags_out; 276c8d46e41SJiaying Zhang } 277c8d46e41SJiaying Zhang } else if (oldflags & EXT4_EOFBLOCKS_FL) 278c8d46e41SJiaying Zhang ext4_truncate(inode); 279c8d46e41SJiaying Zhang 2809924a92aSTheodore Ts'o handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 281ac27a0ecSDave Kleikamp if (IS_ERR(handle)) { 28242a74f20SDave Hansen err = PTR_ERR(handle); 28342a74f20SDave Hansen goto flags_out; 284ac27a0ecSDave Kleikamp } 285ac27a0ecSDave Kleikamp if (IS_SYNC(inode)) 2860390131bSFrank Mayhar ext4_handle_sync(handle); 287617ba13bSMingming Cao err = ext4_reserve_inode_write(handle, inode, &iloc); 288ac27a0ecSDave Kleikamp if (err) 289ac27a0ecSDave Kleikamp goto flags_err; 290ac27a0ecSDave Kleikamp 29179906964STheodore Ts'o for (i = 0, mask = 1; i < 32; i++, mask <<= 1) { 29279906964STheodore Ts'o if (!(mask & EXT4_FL_USER_MODIFIABLE)) 29379906964STheodore Ts'o continue; 29479906964STheodore Ts'o if (mask & flags) 29579906964STheodore Ts'o ext4_set_inode_flag(inode, i); 29679906964STheodore Ts'o else 29779906964STheodore Ts'o ext4_clear_inode_flag(inode, i); 29879906964STheodore Ts'o } 299ac27a0ecSDave Kleikamp 300617ba13bSMingming Cao ext4_set_inode_flags(inode); 301ef7f3835SKalpak Shah inode->i_ctime = ext4_current_time(inode); 302ac27a0ecSDave Kleikamp 303617ba13bSMingming Cao err = ext4_mark_iloc_dirty(handle, inode, &iloc); 304ac27a0ecSDave Kleikamp flags_err: 305617ba13bSMingming Cao ext4_journal_stop(handle); 30642a74f20SDave Hansen if (err) 30742a74f20SDave Hansen goto flags_out; 308ac27a0ecSDave Kleikamp 309617ba13bSMingming Cao if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) 310617ba13bSMingming Cao err = ext4_change_inode_journal_flag(inode, jflag); 3114db46fc2SAneesh Kumar K.V if (err) 3124db46fc2SAneesh Kumar K.V goto flags_out; 313996bb9fdSTheodore Ts'o if (migrate) { 314996bb9fdSTheodore Ts'o if (flags & EXT4_EXTENTS_FL) 3154db46fc2SAneesh Kumar K.V err = ext4_ext_migrate(inode); 316996bb9fdSTheodore Ts'o else 317996bb9fdSTheodore Ts'o err = ext4_ind_migrate(inode); 318996bb9fdSTheodore Ts'o } 319996bb9fdSTheodore Ts'o 32042a74f20SDave Hansen flags_out: 321ac27a0ecSDave Kleikamp mutex_unlock(&inode->i_mutex); 3222a79f17eSAl Viro mnt_drop_write_file(filp); 323ac27a0ecSDave Kleikamp return err; 324ac27a0ecSDave Kleikamp } 325617ba13bSMingming Cao case EXT4_IOC_GETVERSION: 326617ba13bSMingming Cao case EXT4_IOC_GETVERSION_OLD: 327ac27a0ecSDave Kleikamp return put_user(inode->i_generation, (int __user *) arg); 328617ba13bSMingming Cao case EXT4_IOC_SETVERSION: 329617ba13bSMingming Cao case EXT4_IOC_SETVERSION_OLD: { 330ac27a0ecSDave Kleikamp handle_t *handle; 331617ba13bSMingming Cao struct ext4_iloc iloc; 332ac27a0ecSDave Kleikamp __u32 generation; 333ac27a0ecSDave Kleikamp int err; 334ac27a0ecSDave Kleikamp 3352e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 336ac27a0ecSDave Kleikamp return -EPERM; 33742a74f20SDave Hansen 3389aa5d32bSDmitry Monakhov if (ext4_has_metadata_csum(inode->i_sb)) { 339814525f4SDarrick J. Wong ext4_warning(sb, "Setting inode version is not " 340814525f4SDarrick J. Wong "supported with metadata_csum enabled."); 341814525f4SDarrick J. Wong return -ENOTTY; 342814525f4SDarrick J. Wong } 343814525f4SDarrick J. Wong 344a561be71SAl Viro err = mnt_want_write_file(filp); 34542a74f20SDave Hansen if (err) 34642a74f20SDave Hansen return err; 34742a74f20SDave Hansen if (get_user(generation, (int __user *) arg)) { 34842a74f20SDave Hansen err = -EFAULT; 34942a74f20SDave Hansen goto setversion_out; 35042a74f20SDave Hansen } 351ac27a0ecSDave Kleikamp 3526c2155b9SDjalal Harouni mutex_lock(&inode->i_mutex); 3539924a92aSTheodore Ts'o handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 35442a74f20SDave Hansen if (IS_ERR(handle)) { 35542a74f20SDave Hansen err = PTR_ERR(handle); 3566c2155b9SDjalal Harouni goto unlock_out; 35742a74f20SDave Hansen } 358617ba13bSMingming Cao err = ext4_reserve_inode_write(handle, inode, &iloc); 359ac27a0ecSDave Kleikamp if (err == 0) { 360ef7f3835SKalpak Shah inode->i_ctime = ext4_current_time(inode); 361ac27a0ecSDave Kleikamp inode->i_generation = generation; 362617ba13bSMingming Cao err = ext4_mark_iloc_dirty(handle, inode, &iloc); 363ac27a0ecSDave Kleikamp } 364617ba13bSMingming Cao ext4_journal_stop(handle); 3656c2155b9SDjalal Harouni 3666c2155b9SDjalal Harouni unlock_out: 3676c2155b9SDjalal Harouni mutex_unlock(&inode->i_mutex); 36842a74f20SDave Hansen setversion_out: 3692a79f17eSAl Viro mnt_drop_write_file(filp); 370ac27a0ecSDave Kleikamp return err; 371ac27a0ecSDave Kleikamp } 372617ba13bSMingming Cao case EXT4_IOC_GROUP_EXTEND: { 373617ba13bSMingming Cao ext4_fsblk_t n_blocks_count; 374ac046f1dSPeng Tao int err, err2=0; 375ac27a0ecSDave Kleikamp 3768f82f840SYongqiang Yang err = ext4_resize_begin(sb); 3778f82f840SYongqiang Yang if (err) 3788f82f840SYongqiang Yang return err; 379ac27a0ecSDave Kleikamp 380014a1770SDjalal Harouni if (get_user(n_blocks_count, (__u32 __user *)arg)) { 381014a1770SDjalal Harouni err = -EFAULT; 382014a1770SDjalal Harouni goto group_extend_out; 383014a1770SDjalal Harouni } 384ac27a0ecSDave Kleikamp 385e2b911c5SDarrick J. Wong if (ext4_has_feature_bigalloc(sb)) { 386bab08ab9STheodore Ts'o ext4_msg(sb, KERN_ERR, 387bab08ab9STheodore Ts'o "Online resizing not supported with bigalloc"); 388014a1770SDjalal Harouni err = -EOPNOTSUPP; 389014a1770SDjalal Harouni goto group_extend_out; 390bab08ab9STheodore Ts'o } 391bab08ab9STheodore Ts'o 392a561be71SAl Viro err = mnt_want_write_file(filp); 39342a74f20SDave Hansen if (err) 394014a1770SDjalal Harouni goto group_extend_out; 39542a74f20SDave Hansen 396617ba13bSMingming Cao err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count); 397ac046f1dSPeng Tao if (EXT4_SB(sb)->s_journal) { 398dab291afSMingming Cao jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 3997ffe1ea8SHidehiro Kawai err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 400dab291afSMingming Cao jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 401ac046f1dSPeng Tao } 4027ffe1ea8SHidehiro Kawai if (err == 0) 4037ffe1ea8SHidehiro Kawai err = err2; 4042a79f17eSAl Viro mnt_drop_write_file(filp); 405014a1770SDjalal Harouni group_extend_out: 4068f82f840SYongqiang Yang ext4_resize_end(sb); 407ac27a0ecSDave Kleikamp return err; 408ac27a0ecSDave Kleikamp } 409748de673SAkira Fujita 410748de673SAkira Fujita case EXT4_IOC_MOVE_EXT: { 411748de673SAkira Fujita struct move_extent me; 4122903ff01SAl Viro struct fd donor; 4132903ff01SAl Viro int err; 414748de673SAkira Fujita 4154a58579bSAkira Fujita if (!(filp->f_mode & FMODE_READ) || 4164a58579bSAkira Fujita !(filp->f_mode & FMODE_WRITE)) 4174a58579bSAkira Fujita return -EBADF; 4184a58579bSAkira Fujita 419748de673SAkira Fujita if (copy_from_user(&me, 420748de673SAkira Fujita (struct move_extent __user *)arg, sizeof(me))) 421748de673SAkira Fujita return -EFAULT; 4224a58579bSAkira Fujita me.moved_len = 0; 423748de673SAkira Fujita 4242903ff01SAl Viro donor = fdget(me.donor_fd); 4252903ff01SAl Viro if (!donor.file) 426748de673SAkira Fujita return -EBADF; 427748de673SAkira Fujita 4282903ff01SAl Viro if (!(donor.file->f_mode & FMODE_WRITE)) { 4294a58579bSAkira Fujita err = -EBADF; 4304a58579bSAkira Fujita goto mext_out; 431748de673SAkira Fujita } 432748de673SAkira Fujita 433e2b911c5SDarrick J. Wong if (ext4_has_feature_bigalloc(sb)) { 434bab08ab9STheodore Ts'o ext4_msg(sb, KERN_ERR, 435bab08ab9STheodore Ts'o "Online defrag not supported with bigalloc"); 436399c9b86SAl Viro err = -EOPNOTSUPP; 437399c9b86SAl Viro goto mext_out; 438bab08ab9STheodore Ts'o } 439bab08ab9STheodore Ts'o 440a561be71SAl Viro err = mnt_want_write_file(filp); 4414a58579bSAkira Fujita if (err) 4424a58579bSAkira Fujita goto mext_out; 4434a58579bSAkira Fujita 4442903ff01SAl Viro err = ext4_move_extents(filp, donor.file, me.orig_start, 445748de673SAkira Fujita me.donor_start, me.len, &me.moved_len); 4462a79f17eSAl Viro mnt_drop_write_file(filp); 447748de673SAkira Fujita 448c437b273SAkira Fujita if (copy_to_user((struct move_extent __user *)arg, 449c437b273SAkira Fujita &me, sizeof(me))) 4504a58579bSAkira Fujita err = -EFAULT; 4514a58579bSAkira Fujita mext_out: 4522903ff01SAl Viro fdput(donor); 453748de673SAkira Fujita return err; 454748de673SAkira Fujita } 455748de673SAkira Fujita 456617ba13bSMingming Cao case EXT4_IOC_GROUP_ADD: { 457617ba13bSMingming Cao struct ext4_new_group_data input; 458ac046f1dSPeng Tao int err, err2=0; 459ac27a0ecSDave Kleikamp 4608f82f840SYongqiang Yang err = ext4_resize_begin(sb); 4618f82f840SYongqiang Yang if (err) 4628f82f840SYongqiang Yang return err; 463ac27a0ecSDave Kleikamp 464617ba13bSMingming Cao if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg, 465014a1770SDjalal Harouni sizeof(input))) { 466014a1770SDjalal Harouni err = -EFAULT; 467014a1770SDjalal Harouni goto group_add_out; 468014a1770SDjalal Harouni } 469ac27a0ecSDave Kleikamp 470e2b911c5SDarrick J. Wong if (ext4_has_feature_bigalloc(sb)) { 471bab08ab9STheodore Ts'o ext4_msg(sb, KERN_ERR, 472bab08ab9STheodore Ts'o "Online resizing not supported with bigalloc"); 473014a1770SDjalal Harouni err = -EOPNOTSUPP; 474014a1770SDjalal Harouni goto group_add_out; 475bab08ab9STheodore Ts'o } 476bab08ab9STheodore Ts'o 477a561be71SAl Viro err = mnt_want_write_file(filp); 47842a74f20SDave Hansen if (err) 479014a1770SDjalal Harouni goto group_add_out; 48042a74f20SDave Hansen 481617ba13bSMingming Cao err = ext4_group_add(sb, &input); 482ac046f1dSPeng Tao if (EXT4_SB(sb)->s_journal) { 483dab291afSMingming Cao jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 4847ffe1ea8SHidehiro Kawai err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 485dab291afSMingming Cao jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 486ac046f1dSPeng Tao } 4877ffe1ea8SHidehiro Kawai if (err == 0) 4887ffe1ea8SHidehiro Kawai err = err2; 4892a79f17eSAl Viro mnt_drop_write_file(filp); 4907f511862STheodore Ts'o if (!err && ext4_has_group_desc_csum(sb) && 4917f511862STheodore Ts'o test_opt(sb, INIT_INODE_TABLE)) 4927f511862STheodore Ts'o err = ext4_register_li_request(sb, input.group); 493014a1770SDjalal Harouni group_add_out: 4948f82f840SYongqiang Yang ext4_resize_end(sb); 495ac27a0ecSDave Kleikamp return err; 496ac27a0ecSDave Kleikamp } 497ac27a0ecSDave Kleikamp 498c14c6fd5SAneesh Kumar K.V case EXT4_IOC_MIGRATE: 4992a43a878SAneesh Kumar K.V { 5002a43a878SAneesh Kumar K.V int err; 5012e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 5022a43a878SAneesh Kumar K.V return -EACCES; 5032a43a878SAneesh Kumar K.V 504a561be71SAl Viro err = mnt_want_write_file(filp); 5052a43a878SAneesh Kumar K.V if (err) 5062a43a878SAneesh Kumar K.V return err; 5072a43a878SAneesh Kumar K.V /* 5082a43a878SAneesh Kumar K.V * inode_mutex prevent write and truncate on the file. 5092a43a878SAneesh Kumar K.V * Read still goes through. We take i_data_sem in 5102a43a878SAneesh Kumar K.V * ext4_ext_swap_inode_data before we switch the 5112a43a878SAneesh Kumar K.V * inode format to prevent read. 5122a43a878SAneesh Kumar K.V */ 5132a43a878SAneesh Kumar K.V mutex_lock(&(inode->i_mutex)); 5142a43a878SAneesh Kumar K.V err = ext4_ext_migrate(inode); 5152a43a878SAneesh Kumar K.V mutex_unlock(&(inode->i_mutex)); 5162a79f17eSAl Viro mnt_drop_write_file(filp); 5172a43a878SAneesh Kumar K.V return err; 5182a43a878SAneesh Kumar K.V } 519c14c6fd5SAneesh Kumar K.V 520ccd2506bSTheodore Ts'o case EXT4_IOC_ALLOC_DA_BLKS: 521ccd2506bSTheodore Ts'o { 522ccd2506bSTheodore Ts'o int err; 5232e149670SSerge E. Hallyn if (!inode_owner_or_capable(inode)) 524ccd2506bSTheodore Ts'o return -EACCES; 525ccd2506bSTheodore Ts'o 526a561be71SAl Viro err = mnt_want_write_file(filp); 527ccd2506bSTheodore Ts'o if (err) 528ccd2506bSTheodore Ts'o return err; 529ccd2506bSTheodore Ts'o err = ext4_alloc_da_blocks(inode); 5302a79f17eSAl Viro mnt_drop_write_file(filp); 531ccd2506bSTheodore Ts'o return err; 532ccd2506bSTheodore Ts'o } 533ccd2506bSTheodore Ts'o 534393d1d1dSDr. Tilmann Bubeck case EXT4_IOC_SWAP_BOOT: 5353e67cfadSDmitry Monakhov { 5363e67cfadSDmitry Monakhov int err; 537393d1d1dSDr. Tilmann Bubeck if (!(filp->f_mode & FMODE_WRITE)) 538393d1d1dSDr. Tilmann Bubeck return -EBADF; 5393e67cfadSDmitry Monakhov err = mnt_want_write_file(filp); 5403e67cfadSDmitry Monakhov if (err) 5413e67cfadSDmitry Monakhov return err; 5423e67cfadSDmitry Monakhov err = swap_inode_boot_loader(sb, inode); 5433e67cfadSDmitry Monakhov mnt_drop_write_file(filp); 5443e67cfadSDmitry Monakhov return err; 5453e67cfadSDmitry Monakhov } 546393d1d1dSDr. Tilmann Bubeck 54719c5246dSYongqiang Yang case EXT4_IOC_RESIZE_FS: { 54819c5246dSYongqiang Yang ext4_fsblk_t n_blocks_count; 54919c5246dSYongqiang Yang int err = 0, err2 = 0; 5507f511862STheodore Ts'o ext4_group_t o_group = EXT4_SB(sb)->s_groups_count; 55119c5246dSYongqiang Yang 552e2b911c5SDarrick J. Wong if (ext4_has_feature_bigalloc(sb)) { 55319c5246dSYongqiang Yang ext4_msg(sb, KERN_ERR, 55419c5246dSYongqiang Yang "Online resizing not (yet) supported with bigalloc"); 55519c5246dSYongqiang Yang return -EOPNOTSUPP; 55619c5246dSYongqiang Yang } 55719c5246dSYongqiang Yang 55819c5246dSYongqiang Yang if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, 55919c5246dSYongqiang Yang sizeof(__u64))) { 56019c5246dSYongqiang Yang return -EFAULT; 56119c5246dSYongqiang Yang } 56219c5246dSYongqiang Yang 56319c5246dSYongqiang Yang err = ext4_resize_begin(sb); 56419c5246dSYongqiang Yang if (err) 56519c5246dSYongqiang Yang return err; 56619c5246dSYongqiang Yang 5678cae6f71SAl Viro err = mnt_want_write_file(filp); 56819c5246dSYongqiang Yang if (err) 56919c5246dSYongqiang Yang goto resizefs_out; 57019c5246dSYongqiang Yang 57119c5246dSYongqiang Yang err = ext4_resize_fs(sb, n_blocks_count); 57219c5246dSYongqiang Yang if (EXT4_SB(sb)->s_journal) { 57319c5246dSYongqiang Yang jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 57419c5246dSYongqiang Yang err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 57519c5246dSYongqiang Yang jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 57619c5246dSYongqiang Yang } 57719c5246dSYongqiang Yang if (err == 0) 57819c5246dSYongqiang Yang err = err2; 5798cae6f71SAl Viro mnt_drop_write_file(filp); 5807f511862STheodore Ts'o if (!err && (o_group > EXT4_SB(sb)->s_groups_count) && 5817f511862STheodore Ts'o ext4_has_group_desc_csum(sb) && 5827f511862STheodore Ts'o test_opt(sb, INIT_INODE_TABLE)) 5837f511862STheodore Ts'o err = ext4_register_li_request(sb, o_group); 5847f511862STheodore Ts'o 58519c5246dSYongqiang Yang resizefs_out: 58619c5246dSYongqiang Yang ext4_resize_end(sb); 58719c5246dSYongqiang Yang return err; 58819c5246dSYongqiang Yang } 58919c5246dSYongqiang Yang 590e681c047SLukas Czerner case FITRIM: 591e681c047SLukas Czerner { 59241431792SLukas Czerner struct request_queue *q = bdev_get_queue(sb->s_bdev); 593e681c047SLukas Czerner struct fstrim_range range; 594e681c047SLukas Czerner int ret = 0; 595e681c047SLukas Czerner 596e681c047SLukas Czerner if (!capable(CAP_SYS_ADMIN)) 597e681c047SLukas Czerner return -EPERM; 598e681c047SLukas Czerner 59941431792SLukas Czerner if (!blk_queue_discard(q)) 60041431792SLukas Czerner return -EOPNOTSUPP; 60141431792SLukas Czerner 602e6705f7cSH Hartley Sweeten if (copy_from_user(&range, (struct fstrim_range __user *)arg, 603e681c047SLukas Czerner sizeof(range))) 604e681c047SLukas Czerner return -EFAULT; 605e681c047SLukas Czerner 6065c2ed62fSLukas Czerner range.minlen = max((unsigned int)range.minlen, 6075c2ed62fSLukas Czerner q->limits.discard_granularity); 608e681c047SLukas Czerner ret = ext4_trim_fs(sb, &range); 609e681c047SLukas Czerner if (ret < 0) 610e681c047SLukas Czerner return ret; 611e681c047SLukas Czerner 612e6705f7cSH Hartley Sweeten if (copy_to_user((struct fstrim_range __user *)arg, &range, 613e681c047SLukas Czerner sizeof(range))) 614e681c047SLukas Czerner return -EFAULT; 615e681c047SLukas Czerner 616e681c047SLukas Czerner return 0; 617e681c047SLukas Czerner } 6187869a4a6STheodore Ts'o case EXT4_IOC_PRECACHE_EXTENTS: 6197869a4a6STheodore Ts'o return ext4_ext_precache(inode); 6209bd8212fSMichael Halcrow case EXT4_IOC_SET_ENCRYPTION_POLICY: { 6219bd8212fSMichael Halcrow #ifdef CONFIG_EXT4_FS_ENCRYPTION 6229bd8212fSMichael Halcrow struct ext4_encryption_policy policy; 6239bd8212fSMichael Halcrow int err = 0; 624e681c047SLukas Czerner 6259bd8212fSMichael Halcrow if (copy_from_user(&policy, 6269bd8212fSMichael Halcrow (struct ext4_encryption_policy __user *)arg, 6279bd8212fSMichael Halcrow sizeof(policy))) { 6289bd8212fSMichael Halcrow err = -EFAULT; 6299bd8212fSMichael Halcrow goto encryption_policy_out; 6309bd8212fSMichael Halcrow } 6319bd8212fSMichael Halcrow 6329bd8212fSMichael Halcrow err = ext4_process_policy(&policy, inode); 6339bd8212fSMichael Halcrow encryption_policy_out: 6349bd8212fSMichael Halcrow return err; 6359bd8212fSMichael Halcrow #else 6369bd8212fSMichael Halcrow return -EOPNOTSUPP; 6379bd8212fSMichael Halcrow #endif 6389bd8212fSMichael Halcrow } 6399bd8212fSMichael Halcrow case EXT4_IOC_GET_ENCRYPTION_PWSALT: { 6409bd8212fSMichael Halcrow int err, err2; 6419bd8212fSMichael Halcrow struct ext4_sb_info *sbi = EXT4_SB(sb); 6429bd8212fSMichael Halcrow handle_t *handle; 6439bd8212fSMichael Halcrow 6449bd8212fSMichael Halcrow if (!ext4_sb_has_crypto(sb)) 6459bd8212fSMichael Halcrow return -EOPNOTSUPP; 6469bd8212fSMichael Halcrow if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) { 6479bd8212fSMichael Halcrow err = mnt_want_write_file(filp); 6489bd8212fSMichael Halcrow if (err) 6499bd8212fSMichael Halcrow return err; 6509bd8212fSMichael Halcrow handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1); 6519bd8212fSMichael Halcrow if (IS_ERR(handle)) { 6529bd8212fSMichael Halcrow err = PTR_ERR(handle); 6539bd8212fSMichael Halcrow goto pwsalt_err_exit; 6549bd8212fSMichael Halcrow } 6559bd8212fSMichael Halcrow err = ext4_journal_get_write_access(handle, sbi->s_sbh); 6569bd8212fSMichael Halcrow if (err) 6579bd8212fSMichael Halcrow goto pwsalt_err_journal; 6589bd8212fSMichael Halcrow generate_random_uuid(sbi->s_es->s_encrypt_pw_salt); 6599bd8212fSMichael Halcrow err = ext4_handle_dirty_metadata(handle, NULL, 6609bd8212fSMichael Halcrow sbi->s_sbh); 6619bd8212fSMichael Halcrow pwsalt_err_journal: 6629bd8212fSMichael Halcrow err2 = ext4_journal_stop(handle); 6639bd8212fSMichael Halcrow if (err2 && !err) 6649bd8212fSMichael Halcrow err = err2; 6659bd8212fSMichael Halcrow pwsalt_err_exit: 6669bd8212fSMichael Halcrow mnt_drop_write_file(filp); 6679bd8212fSMichael Halcrow if (err) 6689bd8212fSMichael Halcrow return err; 6699bd8212fSMichael Halcrow } 670b4ab9e29SFabian Frederick if (copy_to_user((void __user *) arg, 671b4ab9e29SFabian Frederick sbi->s_es->s_encrypt_pw_salt, 16)) 6729bd8212fSMichael Halcrow return -EFAULT; 6739bd8212fSMichael Halcrow return 0; 6749bd8212fSMichael Halcrow } 6759bd8212fSMichael Halcrow case EXT4_IOC_GET_ENCRYPTION_POLICY: { 6769bd8212fSMichael Halcrow #ifdef CONFIG_EXT4_FS_ENCRYPTION 6779bd8212fSMichael Halcrow struct ext4_encryption_policy policy; 6789bd8212fSMichael Halcrow int err = 0; 6799bd8212fSMichael Halcrow 6809bd8212fSMichael Halcrow if (!ext4_encrypted_inode(inode)) 6819bd8212fSMichael Halcrow return -ENOENT; 6829bd8212fSMichael Halcrow err = ext4_get_policy(inode, &policy); 6839bd8212fSMichael Halcrow if (err) 6849bd8212fSMichael Halcrow return err; 685b4ab9e29SFabian Frederick if (copy_to_user((void __user *)arg, &policy, sizeof(policy))) 6869bd8212fSMichael Halcrow return -EFAULT; 6879bd8212fSMichael Halcrow return 0; 6889bd8212fSMichael Halcrow #else 6899bd8212fSMichael Halcrow return -EOPNOTSUPP; 6909bd8212fSMichael Halcrow #endif 6919bd8212fSMichael Halcrow } 692ac27a0ecSDave Kleikamp default: 693ac27a0ecSDave Kleikamp return -ENOTTY; 694ac27a0ecSDave Kleikamp } 695ac27a0ecSDave Kleikamp } 696ac27a0ecSDave Kleikamp 697ac27a0ecSDave Kleikamp #ifdef CONFIG_COMPAT 698617ba13bSMingming Cao long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 699ac27a0ecSDave Kleikamp { 700ac27a0ecSDave Kleikamp /* These are just misnamed, they actually get/put from/to user an int */ 701ac27a0ecSDave Kleikamp switch (cmd) { 702617ba13bSMingming Cao case EXT4_IOC32_GETFLAGS: 703617ba13bSMingming Cao cmd = EXT4_IOC_GETFLAGS; 704ac27a0ecSDave Kleikamp break; 705617ba13bSMingming Cao case EXT4_IOC32_SETFLAGS: 706617ba13bSMingming Cao cmd = EXT4_IOC_SETFLAGS; 707ac27a0ecSDave Kleikamp break; 708617ba13bSMingming Cao case EXT4_IOC32_GETVERSION: 709617ba13bSMingming Cao cmd = EXT4_IOC_GETVERSION; 710ac27a0ecSDave Kleikamp break; 711617ba13bSMingming Cao case EXT4_IOC32_SETVERSION: 712617ba13bSMingming Cao cmd = EXT4_IOC_SETVERSION; 713ac27a0ecSDave Kleikamp break; 714617ba13bSMingming Cao case EXT4_IOC32_GROUP_EXTEND: 715617ba13bSMingming Cao cmd = EXT4_IOC_GROUP_EXTEND; 716ac27a0ecSDave Kleikamp break; 717617ba13bSMingming Cao case EXT4_IOC32_GETVERSION_OLD: 718617ba13bSMingming Cao cmd = EXT4_IOC_GETVERSION_OLD; 719ac27a0ecSDave Kleikamp break; 720617ba13bSMingming Cao case EXT4_IOC32_SETVERSION_OLD: 721617ba13bSMingming Cao cmd = EXT4_IOC_SETVERSION_OLD; 722ac27a0ecSDave Kleikamp break; 723617ba13bSMingming Cao case EXT4_IOC32_GETRSVSZ: 724617ba13bSMingming Cao cmd = EXT4_IOC_GETRSVSZ; 725ac27a0ecSDave Kleikamp break; 726617ba13bSMingming Cao case EXT4_IOC32_SETRSVSZ: 727617ba13bSMingming Cao cmd = EXT4_IOC_SETRSVSZ; 728ac27a0ecSDave Kleikamp break; 7294d92dc0fSBen Hutchings case EXT4_IOC32_GROUP_ADD: { 7304d92dc0fSBen Hutchings struct compat_ext4_new_group_input __user *uinput; 7314d92dc0fSBen Hutchings struct ext4_new_group_input input; 7324d92dc0fSBen Hutchings mm_segment_t old_fs; 7334d92dc0fSBen Hutchings int err; 7344d92dc0fSBen Hutchings 7354d92dc0fSBen Hutchings uinput = compat_ptr(arg); 7364d92dc0fSBen Hutchings err = get_user(input.group, &uinput->group); 7374d92dc0fSBen Hutchings err |= get_user(input.block_bitmap, &uinput->block_bitmap); 7384d92dc0fSBen Hutchings err |= get_user(input.inode_bitmap, &uinput->inode_bitmap); 7394d92dc0fSBen Hutchings err |= get_user(input.inode_table, &uinput->inode_table); 7404d92dc0fSBen Hutchings err |= get_user(input.blocks_count, &uinput->blocks_count); 7414d92dc0fSBen Hutchings err |= get_user(input.reserved_blocks, 7424d92dc0fSBen Hutchings &uinput->reserved_blocks); 7434d92dc0fSBen Hutchings if (err) 7444d92dc0fSBen Hutchings return -EFAULT; 7454d92dc0fSBen Hutchings old_fs = get_fs(); 7464d92dc0fSBen Hutchings set_fs(KERNEL_DS); 7474d92dc0fSBen Hutchings err = ext4_ioctl(file, EXT4_IOC_GROUP_ADD, 7484d92dc0fSBen Hutchings (unsigned long) &input); 7494d92dc0fSBen Hutchings set_fs(old_fs); 7504d92dc0fSBen Hutchings return err; 7514d92dc0fSBen Hutchings } 752b684b2eeSChristian Borntraeger case EXT4_IOC_MOVE_EXT: 75319c5246dSYongqiang Yang case EXT4_IOC_RESIZE_FS: 7547869a4a6STheodore Ts'o case EXT4_IOC_PRECACHE_EXTENTS: 7559bd8212fSMichael Halcrow case EXT4_IOC_SET_ENCRYPTION_POLICY: 7569bd8212fSMichael Halcrow case EXT4_IOC_GET_ENCRYPTION_PWSALT: 7579bd8212fSMichael Halcrow case EXT4_IOC_GET_ENCRYPTION_POLICY: 758b684b2eeSChristian Borntraeger break; 759ac27a0ecSDave Kleikamp default: 760ac27a0ecSDave Kleikamp return -ENOIOCTLCMD; 761ac27a0ecSDave Kleikamp } 7625cdd7b2dSAndi Kleen return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); 763ac27a0ecSDave Kleikamp } 764ac27a0ecSDave Kleikamp #endif 765