11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * vfsv0 quota IO operations on file 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/fs.h> 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mount.h> 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/dqblk_v2.h> 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 1374abb9890dafb12a50dc140de215ed477beb1b88Jan Kara#include <linux/quotaops.h> 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/byteorder.h> 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 171ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Kara#include "quota_tree.h" 18cf770c137122b78470a67ebd5498947869a09197Jan Kara#include "quotaio_v2.h" 19cf770c137122b78470a67ebd5498947869a09197Jan Kara 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("Jan Kara"); 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("Quota format v2 support"); 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define __QUOTA_V2_PARANOIA 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic void v2r0_mem2diskdqb(void *dp, struct dquot *dquot); 27498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic void v2r0_disk2memdqb(struct dquot *dquot, void *dp); 28498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic int v2r0_is_id(void *dp, struct dquot *dquot); 29498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic void v2r1_mem2diskdqb(void *dp, struct dquot *dquot); 30498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic void v2r1_disk2memdqb(struct dquot *dquot, void *dp); 31498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic int v2r1_is_id(void *dp, struct dquot *dquot); 32498c60153ebb8889d8944591383c5c12af1127d4Jan Kara 33498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic struct qtree_fmt_operations v2r0_qtree_ops = { 34498c60153ebb8889d8944591383c5c12af1127d4Jan Kara .mem2disk_dqblk = v2r0_mem2diskdqb, 35498c60153ebb8889d8944591383c5c12af1127d4Jan Kara .disk2mem_dqblk = v2r0_disk2memdqb, 36498c60153ebb8889d8944591383c5c12af1127d4Jan Kara .is_id = v2r0_is_id, 37498c60153ebb8889d8944591383c5c12af1127d4Jan Kara}; 38498c60153ebb8889d8944591383c5c12af1127d4Jan Kara 39498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic struct qtree_fmt_operations v2r1_qtree_ops = { 40498c60153ebb8889d8944591383c5c12af1127d4Jan Kara .mem2disk_dqblk = v2r1_mem2diskdqb, 41498c60153ebb8889d8944591383c5c12af1127d4Jan Kara .disk2mem_dqblk = v2r1_disk2memdqb, 42498c60153ebb8889d8944591383c5c12af1127d4Jan Kara .is_id = v2r1_is_id, 431ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Kara}; 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4512095460f7f315f8ef67a55b2194195d325d48d7Jan Kara#define QUOTABLOCK_BITS 10 4612095460f7f315f8ef67a55b2194195d325d48d7Jan Kara#define QUOTABLOCK_SIZE (1 << QUOTABLOCK_BITS) 4712095460f7f315f8ef67a55b2194195d325d48d7Jan Kara 4812095460f7f315f8ef67a55b2194195d325d48d7Jan Karastatic inline qsize_t v2_stoqb(qsize_t space) 4912095460f7f315f8ef67a55b2194195d325d48d7Jan Kara{ 5012095460f7f315f8ef67a55b2194195d325d48d7Jan Kara return (space + QUOTABLOCK_SIZE - 1) >> QUOTABLOCK_BITS; 5112095460f7f315f8ef67a55b2194195d325d48d7Jan Kara} 5212095460f7f315f8ef67a55b2194195d325d48d7Jan Kara 5312095460f7f315f8ef67a55b2194195d325d48d7Jan Karastatic inline qsize_t v2_qbtos(qsize_t blocks) 5412095460f7f315f8ef67a55b2194195d325d48d7Jan Kara{ 5512095460f7f315f8ef67a55b2194195d325d48d7Jan Kara return blocks << QUOTABLOCK_BITS; 5612095460f7f315f8ef67a55b2194195d325d48d7Jan Kara} 5712095460f7f315f8ef67a55b2194195d325d48d7Jan Kara 58498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic int v2_read_header(struct super_block *sb, int type, 59498c60153ebb8889d8944591383c5c12af1127d4Jan Kara struct v2_disk_dqheader *dqhead) 60498c60153ebb8889d8944591383c5c12af1127d4Jan Kara{ 61498c60153ebb8889d8944591383c5c12af1127d4Jan Kara ssize_t size; 62498c60153ebb8889d8944591383c5c12af1127d4Jan Kara 63498c60153ebb8889d8944591383c5c12af1127d4Jan Kara size = sb->s_op->quota_read(sb, type, (char *)dqhead, 64498c60153ebb8889d8944591383c5c12af1127d4Jan Kara sizeof(struct v2_disk_dqheader), 0); 65498c60153ebb8889d8944591383c5c12af1127d4Jan Kara if (size != sizeof(struct v2_disk_dqheader)) { 66fb5ffb0e160c93c3fe08ab83845eb9a2768af812Jiaying Zhang quota_error(sb, "Failed header read: expected=%zd got=%zd", 67fb5ffb0e160c93c3fe08ab83845eb9a2768af812Jiaying Zhang sizeof(struct v2_disk_dqheader), size); 68498c60153ebb8889d8944591383c5c12af1127d4Jan Kara return 0; 69498c60153ebb8889d8944591383c5c12af1127d4Jan Kara } 70498c60153ebb8889d8944591383c5c12af1127d4Jan Kara return 1; 71498c60153ebb8889d8944591383c5c12af1127d4Jan Kara} 72498c60153ebb8889d8944591383c5c12af1127d4Jan Kara 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Check whether given file is really vfsv0 quotafile */ 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int v2_check_quota_file(struct super_block *sb, int type) 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct v2_disk_dqheader dqhead; 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static const uint quota_magics[] = V2_INITQMAGICS; 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static const uint quota_versions[] = V2_INITQVERSIONS; 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 80498c60153ebb8889d8944591383c5c12af1127d4Jan Kara if (!v2_read_header(sb, type, &dqhead)) 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (le32_to_cpu(dqhead.dqh_magic) != quota_magics[type] || 83498c60153ebb8889d8944591383c5c12af1127d4Jan Kara le32_to_cpu(dqhead.dqh_version) > quota_versions[type]) 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Read information header from quota file */ 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int v2_read_file_info(struct super_block *sb, int type) 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct v2_disk_dqinfo dinfo; 92498c60153ebb8889d8944591383c5c12af1127d4Jan Kara struct v2_disk_dqheader dqhead; 931ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Kara struct mem_dqinfo *info = sb_dqinfo(sb, type); 94e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara struct qtree_mem_dqinfo *qinfo; 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ssize_t size; 96498c60153ebb8889d8944591383c5c12af1127d4Jan Kara unsigned int version; 97498c60153ebb8889d8944591383c5c12af1127d4Jan Kara 98498c60153ebb8889d8944591383c5c12af1127d4Jan Kara if (!v2_read_header(sb, type, &dqhead)) 99869835dfad3eb6f7d90c3255a24b084fea82f30dJan Kara return -1; 100498c60153ebb8889d8944591383c5c12af1127d4Jan Kara version = le32_to_cpu(dqhead.dqh_version); 101869835dfad3eb6f7d90c3255a24b084fea82f30dJan Kara if ((info->dqi_fmt_id == QFMT_VFS_V0 && version != 0) || 102869835dfad3eb6f7d90c3255a24b084fea82f30dJan Kara (info->dqi_fmt_id == QFMT_VFS_V1 && version != 1)) 103869835dfad3eb6f7d90c3255a24b084fea82f30dJan Kara return -1; 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size = sb->s_op->quota_read(sb, type, (char *)&dinfo, 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sizeof(struct v2_disk_dqinfo), V2_DQINFOOFF); 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (size != sizeof(struct v2_disk_dqinfo)) { 108fb5ffb0e160c93c3fe08ab83845eb9a2768af812Jiaying Zhang quota_error(sb, "Can't read info structure"); 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 111e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara info->dqi_priv = kmalloc(sizeof(struct qtree_mem_dqinfo), GFP_NOFS); 112e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara if (!info->dqi_priv) { 113e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara printk(KERN_WARNING 114e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara "Not enough memory for quota information structure.\n"); 1157a39de1510a3fd07a77530440292735d305fe510Davidlohr Bueso return -ENOMEM; 116e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara } 117e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara qinfo = info->dqi_priv; 118498c60153ebb8889d8944591383c5c12af1127d4Jan Kara if (version == 0) { 119498c60153ebb8889d8944591383c5c12af1127d4Jan Kara /* limits are stored as unsigned 32-bit data */ 120498c60153ebb8889d8944591383c5c12af1127d4Jan Kara info->dqi_maxblimit = 0xffffffff; 121498c60153ebb8889d8944591383c5c12af1127d4Jan Kara info->dqi_maxilimit = 0xffffffff; 122498c60153ebb8889d8944591383c5c12af1127d4Jan Kara } else { 123498c60153ebb8889d8944591383c5c12af1127d4Jan Kara /* used space is stored as unsigned 64-bit value */ 12482fdfa928cfa19d9627526b2ce164a27f8e9d34bJan Kara info->dqi_maxblimit = 0xffffffffffffffffULL; /* 2^64-1 */ 12582fdfa928cfa19d9627526b2ce164a27f8e9d34bJan Kara info->dqi_maxilimit = 0xffffffffffffffffULL; 126498c60153ebb8889d8944591383c5c12af1127d4Jan Kara } 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->dqi_bgrace = le32_to_cpu(dinfo.dqi_bgrace); 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->dqi_igrace = le32_to_cpu(dinfo.dqi_igrace); 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->dqi_flags = le32_to_cpu(dinfo.dqi_flags); 130e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara qinfo->dqi_sb = sb; 131e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara qinfo->dqi_type = type; 132e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara qinfo->dqi_blocks = le32_to_cpu(dinfo.dqi_blocks); 133e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara qinfo->dqi_free_blk = le32_to_cpu(dinfo.dqi_free_blk); 134e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara qinfo->dqi_free_entry = le32_to_cpu(dinfo.dqi_free_entry); 135e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara qinfo->dqi_blocksize_bits = V2_DQBLKSIZE_BITS; 136e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara qinfo->dqi_usable_bs = 1 << V2_DQBLKSIZE_BITS; 137e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara qinfo->dqi_qtree_depth = qtree_depth(qinfo); 138498c60153ebb8889d8944591383c5c12af1127d4Jan Kara if (version == 0) { 139498c60153ebb8889d8944591383c5c12af1127d4Jan Kara qinfo->dqi_entry_size = sizeof(struct v2r0_disk_dqblk); 140498c60153ebb8889d8944591383c5c12af1127d4Jan Kara qinfo->dqi_ops = &v2r0_qtree_ops; 141498c60153ebb8889d8944591383c5c12af1127d4Jan Kara } else { 142498c60153ebb8889d8944591383c5c12af1127d4Jan Kara qinfo->dqi_entry_size = sizeof(struct v2r1_disk_dqblk); 143498c60153ebb8889d8944591383c5c12af1127d4Jan Kara qinfo->dqi_ops = &v2r1_qtree_ops; 144498c60153ebb8889d8944591383c5c12af1127d4Jan Kara } 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Write information header to quota file */ 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int v2_write_file_info(struct super_block *sb, int type) 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct v2_disk_dqinfo dinfo; 1521ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Kara struct mem_dqinfo *info = sb_dqinfo(sb, type); 153e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara struct qtree_mem_dqinfo *qinfo = info->dqi_priv; 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ssize_t size; 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock(&dq_data_lock); 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->dqi_flags &= ~DQF_INFO_DIRTY; 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dinfo.dqi_bgrace = cpu_to_le32(info->dqi_bgrace); 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dinfo.dqi_igrace = cpu_to_le32(info->dqi_igrace); 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dinfo.dqi_flags = cpu_to_le32(info->dqi_flags & DQF_MASK); 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock(&dq_data_lock); 162e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara dinfo.dqi_blocks = cpu_to_le32(qinfo->dqi_blocks); 163e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara dinfo.dqi_free_blk = cpu_to_le32(qinfo->dqi_free_blk); 164e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara dinfo.dqi_free_entry = cpu_to_le32(qinfo->dqi_free_entry); 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size = sb->s_op->quota_write(sb, type, (char *)&dinfo, 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sizeof(struct v2_disk_dqinfo), V2_DQINFOOFF); 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (size != sizeof(struct v2_disk_dqinfo)) { 168fb5ffb0e160c93c3fe08ab83845eb9a2768af812Jiaying Zhang quota_error(sb, "Can't write info structure"); 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 174498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic void v2r0_disk2memdqb(struct dquot *dquot, void *dp) 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 176498c60153ebb8889d8944591383c5c12af1127d4Jan Kara struct v2r0_disk_dqblk *d = dp, empty; 1771ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Kara struct mem_dqblk *m = &dquot->dq_dqb; 1781ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Kara 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds m->dqb_ihardlimit = le32_to_cpu(d->dqb_ihardlimit); 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds m->dqb_isoftlimit = le32_to_cpu(d->dqb_isoftlimit); 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds m->dqb_curinodes = le32_to_cpu(d->dqb_curinodes); 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds m->dqb_itime = le64_to_cpu(d->dqb_itime); 18312095460f7f315f8ef67a55b2194195d325d48d7Jan Kara m->dqb_bhardlimit = v2_qbtos(le32_to_cpu(d->dqb_bhardlimit)); 18412095460f7f315f8ef67a55b2194195d325d48d7Jan Kara m->dqb_bsoftlimit = v2_qbtos(le32_to_cpu(d->dqb_bsoftlimit)); 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds m->dqb_curspace = le64_to_cpu(d->dqb_curspace); 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds m->dqb_btime = le64_to_cpu(d->dqb_btime); 1871ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Kara /* We need to escape back all-zero structure */ 188498c60153ebb8889d8944591383c5c12af1127d4Jan Kara memset(&empty, 0, sizeof(struct v2r0_disk_dqblk)); 1891ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Kara empty.dqb_itime = cpu_to_le64(1); 190498c60153ebb8889d8944591383c5c12af1127d4Jan Kara if (!memcmp(&empty, dp, sizeof(struct v2r0_disk_dqblk))) 1911ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Kara m->dqb_itime = 0; 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 194498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic void v2r0_mem2diskdqb(void *dp, struct dquot *dquot) 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 196498c60153ebb8889d8944591383c5c12af1127d4Jan Kara struct v2r0_disk_dqblk *d = dp; 1971ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Kara struct mem_dqblk *m = &dquot->dq_dqb; 1981ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Kara struct qtree_mem_dqinfo *info = 1994c376dcae892e5b5daf8576c864061d076d4e4dcEric W. Biederman sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv; 2001ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Kara 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds d->dqb_ihardlimit = cpu_to_le32(m->dqb_ihardlimit); 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds d->dqb_isoftlimit = cpu_to_le32(m->dqb_isoftlimit); 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds d->dqb_curinodes = cpu_to_le32(m->dqb_curinodes); 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds d->dqb_itime = cpu_to_le64(m->dqb_itime); 205cf770c137122b78470a67ebd5498947869a09197Jan Kara d->dqb_bhardlimit = cpu_to_le32(v2_stoqb(m->dqb_bhardlimit)); 206cf770c137122b78470a67ebd5498947869a09197Jan Kara d->dqb_bsoftlimit = cpu_to_le32(v2_stoqb(m->dqb_bsoftlimit)); 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds d->dqb_curspace = cpu_to_le64(m->dqb_curspace); 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds d->dqb_btime = cpu_to_le64(m->dqb_btime); 2094c376dcae892e5b5daf8576c864061d076d4e4dcEric W. Biederman d->dqb_id = cpu_to_le32(from_kqid(&init_user_ns, dquot->dq_id)); 2101ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Kara if (qtree_entry_unused(info, dp)) 2111ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Kara d->dqb_itime = cpu_to_le64(1); 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 214498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic int v2r0_is_id(void *dp, struct dquot *dquot) 215498c60153ebb8889d8944591383c5c12af1127d4Jan Kara{ 216498c60153ebb8889d8944591383c5c12af1127d4Jan Kara struct v2r0_disk_dqblk *d = dp; 217498c60153ebb8889d8944591383c5c12af1127d4Jan Kara struct qtree_mem_dqinfo *info = 2184c376dcae892e5b5daf8576c864061d076d4e4dcEric W. Biederman sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv; 219498c60153ebb8889d8944591383c5c12af1127d4Jan Kara 220498c60153ebb8889d8944591383c5c12af1127d4Jan Kara if (qtree_entry_unused(info, dp)) 221498c60153ebb8889d8944591383c5c12af1127d4Jan Kara return 0; 2224c376dcae892e5b5daf8576c864061d076d4e4dcEric W. Biederman return qid_eq(make_kqid(&init_user_ns, dquot->dq_id.type, 2234c376dcae892e5b5daf8576c864061d076d4e4dcEric W. Biederman le32_to_cpu(d->dqb_id)), 2244c376dcae892e5b5daf8576c864061d076d4e4dcEric W. Biederman dquot->dq_id); 225498c60153ebb8889d8944591383c5c12af1127d4Jan Kara} 226498c60153ebb8889d8944591383c5c12af1127d4Jan Kara 227498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic void v2r1_disk2memdqb(struct dquot *dquot, void *dp) 228498c60153ebb8889d8944591383c5c12af1127d4Jan Kara{ 229498c60153ebb8889d8944591383c5c12af1127d4Jan Kara struct v2r1_disk_dqblk *d = dp, empty; 230498c60153ebb8889d8944591383c5c12af1127d4Jan Kara struct mem_dqblk *m = &dquot->dq_dqb; 231498c60153ebb8889d8944591383c5c12af1127d4Jan Kara 232498c60153ebb8889d8944591383c5c12af1127d4Jan Kara m->dqb_ihardlimit = le64_to_cpu(d->dqb_ihardlimit); 233498c60153ebb8889d8944591383c5c12af1127d4Jan Kara m->dqb_isoftlimit = le64_to_cpu(d->dqb_isoftlimit); 234498c60153ebb8889d8944591383c5c12af1127d4Jan Kara m->dqb_curinodes = le64_to_cpu(d->dqb_curinodes); 235498c60153ebb8889d8944591383c5c12af1127d4Jan Kara m->dqb_itime = le64_to_cpu(d->dqb_itime); 236498c60153ebb8889d8944591383c5c12af1127d4Jan Kara m->dqb_bhardlimit = v2_qbtos(le64_to_cpu(d->dqb_bhardlimit)); 237498c60153ebb8889d8944591383c5c12af1127d4Jan Kara m->dqb_bsoftlimit = v2_qbtos(le64_to_cpu(d->dqb_bsoftlimit)); 238498c60153ebb8889d8944591383c5c12af1127d4Jan Kara m->dqb_curspace = le64_to_cpu(d->dqb_curspace); 239498c60153ebb8889d8944591383c5c12af1127d4Jan Kara m->dqb_btime = le64_to_cpu(d->dqb_btime); 240498c60153ebb8889d8944591383c5c12af1127d4Jan Kara /* We need to escape back all-zero structure */ 241498c60153ebb8889d8944591383c5c12af1127d4Jan Kara memset(&empty, 0, sizeof(struct v2r1_disk_dqblk)); 242498c60153ebb8889d8944591383c5c12af1127d4Jan Kara empty.dqb_itime = cpu_to_le64(1); 243498c60153ebb8889d8944591383c5c12af1127d4Jan Kara if (!memcmp(&empty, dp, sizeof(struct v2r1_disk_dqblk))) 244498c60153ebb8889d8944591383c5c12af1127d4Jan Kara m->dqb_itime = 0; 245498c60153ebb8889d8944591383c5c12af1127d4Jan Kara} 246498c60153ebb8889d8944591383c5c12af1127d4Jan Kara 247498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic void v2r1_mem2diskdqb(void *dp, struct dquot *dquot) 248498c60153ebb8889d8944591383c5c12af1127d4Jan Kara{ 249498c60153ebb8889d8944591383c5c12af1127d4Jan Kara struct v2r1_disk_dqblk *d = dp; 250498c60153ebb8889d8944591383c5c12af1127d4Jan Kara struct mem_dqblk *m = &dquot->dq_dqb; 251498c60153ebb8889d8944591383c5c12af1127d4Jan Kara struct qtree_mem_dqinfo *info = 2524c376dcae892e5b5daf8576c864061d076d4e4dcEric W. Biederman sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv; 253498c60153ebb8889d8944591383c5c12af1127d4Jan Kara 254498c60153ebb8889d8944591383c5c12af1127d4Jan Kara d->dqb_ihardlimit = cpu_to_le64(m->dqb_ihardlimit); 255498c60153ebb8889d8944591383c5c12af1127d4Jan Kara d->dqb_isoftlimit = cpu_to_le64(m->dqb_isoftlimit); 256498c60153ebb8889d8944591383c5c12af1127d4Jan Kara d->dqb_curinodes = cpu_to_le64(m->dqb_curinodes); 257498c60153ebb8889d8944591383c5c12af1127d4Jan Kara d->dqb_itime = cpu_to_le64(m->dqb_itime); 258498c60153ebb8889d8944591383c5c12af1127d4Jan Kara d->dqb_bhardlimit = cpu_to_le64(v2_stoqb(m->dqb_bhardlimit)); 259498c60153ebb8889d8944591383c5c12af1127d4Jan Kara d->dqb_bsoftlimit = cpu_to_le64(v2_stoqb(m->dqb_bsoftlimit)); 260498c60153ebb8889d8944591383c5c12af1127d4Jan Kara d->dqb_curspace = cpu_to_le64(m->dqb_curspace); 261498c60153ebb8889d8944591383c5c12af1127d4Jan Kara d->dqb_btime = cpu_to_le64(m->dqb_btime); 2624c376dcae892e5b5daf8576c864061d076d4e4dcEric W. Biederman d->dqb_id = cpu_to_le32(from_kqid(&init_user_ns, dquot->dq_id)); 263498c60153ebb8889d8944591383c5c12af1127d4Jan Kara if (qtree_entry_unused(info, dp)) 264498c60153ebb8889d8944591383c5c12af1127d4Jan Kara d->dqb_itime = cpu_to_le64(1); 265498c60153ebb8889d8944591383c5c12af1127d4Jan Kara} 266498c60153ebb8889d8944591383c5c12af1127d4Jan Kara 267498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic int v2r1_is_id(void *dp, struct dquot *dquot) 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 269498c60153ebb8889d8944591383c5c12af1127d4Jan Kara struct v2r1_disk_dqblk *d = dp; 2701ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Kara struct qtree_mem_dqinfo *info = 2714c376dcae892e5b5daf8576c864061d076d4e4dcEric W. Biederman sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv; 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2731ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Kara if (qtree_entry_unused(info, dp)) 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2754c376dcae892e5b5daf8576c864061d076d4e4dcEric W. Biederman return qid_eq(make_kqid(&init_user_ns, dquot->dq_id.type, 2764c376dcae892e5b5daf8576c864061d076d4e4dcEric W. Biederman le32_to_cpu(d->dqb_id)), 2774c376dcae892e5b5daf8576c864061d076d4e4dcEric W. Biederman dquot->dq_id); 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2801ccd14b9c271c1ac6eec5c5ec5def433100e7248Jan Karastatic int v2_read_dquot(struct dquot *dquot) 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2824c376dcae892e5b5daf8576c864061d076d4e4dcEric W. Biederman return qtree_read_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, dquot); 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int v2_write_dquot(struct dquot *dquot) 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2874c376dcae892e5b5daf8576c864061d076d4e4dcEric W. Biederman return qtree_write_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, dquot); 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int v2_release_dquot(struct dquot *dquot) 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2924c376dcae892e5b5daf8576c864061d076d4e4dcEric W. Biederman return qtree_release_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, dquot); 293e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara} 294e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara 295e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Karastatic int v2_free_file_info(struct super_block *sb, int type) 296e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara{ 297e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara kfree(sb_dqinfo(sb, type)->dqi_priv); 298e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara return 0; 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3011472da5fdc65f0cd286c655758d629346001e126Alexey Dobriyanstatic const struct quota_format_ops v2_format_ops = { 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .check_quota_file = v2_check_quota_file, 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .read_file_info = v2_read_file_info, 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_file_info = v2_write_file_info, 305e3d4d56b9715e40ded2a84d0d4fa7f3b6c58983cJan Kara .free_file_info = v2_free_file_info, 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .read_dqblk = v2_read_dquot, 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .commit_dqblk = v2_write_dquot, 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .release_dqblk = v2_release_dquot, 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 311498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic struct quota_format_type v2r0_quota_format = { 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .qf_fmt_id = QFMT_VFS_V0, 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .qf_ops = &v2_format_ops, 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .qf_owner = THIS_MODULE 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 317498c60153ebb8889d8944591383c5c12af1127d4Jan Karastatic struct quota_format_type v2r1_quota_format = { 318498c60153ebb8889d8944591383c5c12af1127d4Jan Kara .qf_fmt_id = QFMT_VFS_V1, 319498c60153ebb8889d8944591383c5c12af1127d4Jan Kara .qf_ops = &v2_format_ops, 320498c60153ebb8889d8944591383c5c12af1127d4Jan Kara .qf_owner = THIS_MODULE 321498c60153ebb8889d8944591383c5c12af1127d4Jan Kara}; 322498c60153ebb8889d8944591383c5c12af1127d4Jan Kara 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init init_v2_quota_format(void) 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 325498c60153ebb8889d8944591383c5c12af1127d4Jan Kara int ret; 326498c60153ebb8889d8944591383c5c12af1127d4Jan Kara 327498c60153ebb8889d8944591383c5c12af1127d4Jan Kara ret = register_quota_format(&v2r0_quota_format); 328498c60153ebb8889d8944591383c5c12af1127d4Jan Kara if (ret) 329498c60153ebb8889d8944591383c5c12af1127d4Jan Kara return ret; 330498c60153ebb8889d8944591383c5c12af1127d4Jan Kara return register_quota_format(&v2r1_quota_format); 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit exit_v2_quota_format(void) 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 335498c60153ebb8889d8944591383c5c12af1127d4Jan Kara unregister_quota_format(&v2r0_quota_format); 336498c60153ebb8889d8944591383c5c12af1127d4Jan Kara unregister_quota_format(&v2r1_quota_format); 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(init_v2_quota_format); 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(exit_v2_quota_format); 341