147e4937aSGao Xiang // SPDX-License-Identifier: GPL-2.0-only 247e4937aSGao Xiang /* 347e4937aSGao Xiang * Copyright (C) 2017-2018 HUAWEI, Inc. 4592e7cd0SAlexander A. Klimov * https://www.huawei.com/ 5c5aa903aSGao Xiang * Copyright (C) 2021, Alibaba Cloud 647e4937aSGao Xiang */ 747e4937aSGao Xiang #include "xattr.h" 847e4937aSGao Xiang 947e4937aSGao Xiang #include <trace/events/erofs.h> 1047e4937aSGao Xiang 11c521e3adSGao Xiang static void *erofs_read_inode(struct erofs_buf *buf, 12c521e3adSGao Xiang struct inode *inode, unsigned int *ofs) 1347e4937aSGao Xiang { 140dcd3c94SGao Xiang struct super_block *sb = inode->i_sb; 150dcd3c94SGao Xiang struct erofs_sb_info *sbi = EROFS_SB(sb); 16a5876e24SGao Xiang struct erofs_inode *vi = EROFS_I(inode); 170dcd3c94SGao Xiang const erofs_off_t inode_loc = iloc(sbi, vi->nid); 188a765682SGao Xiang 190dcd3c94SGao Xiang erofs_blk_t blkaddr, nblks = 0; 20c521e3adSGao Xiang void *kaddr; 210dcd3c94SGao Xiang struct erofs_inode_compact *dic; 220dcd3c94SGao Xiang struct erofs_inode_extended *die, *copied = NULL; 230dcd3c94SGao Xiang unsigned int ifmt; 240dcd3c94SGao Xiang int err; 250dcd3c94SGao Xiang 260dcd3c94SGao Xiang blkaddr = erofs_blknr(inode_loc); 270dcd3c94SGao Xiang *ofs = erofs_blkoff(inode_loc); 280dcd3c94SGao Xiang 290dcd3c94SGao Xiang erofs_dbg("%s, reading inode nid %llu at %u of blkaddr %u", 300dcd3c94SGao Xiang __func__, vi->nid, *ofs, blkaddr); 310dcd3c94SGao Xiang 32c521e3adSGao Xiang kaddr = erofs_read_metabuf(buf, sb, blkaddr, EROFS_KMAP); 33c521e3adSGao Xiang if (IS_ERR(kaddr)) { 340dcd3c94SGao Xiang erofs_err(sb, "failed to get inode (nid: %llu) page, err %ld", 35c521e3adSGao Xiang vi->nid, PTR_ERR(kaddr)); 36c521e3adSGao Xiang return kaddr; 370dcd3c94SGao Xiang } 380dcd3c94SGao Xiang 39c521e3adSGao Xiang dic = kaddr + *ofs; 400dcd3c94SGao Xiang ifmt = le16_to_cpu(dic->i_format); 4147e4937aSGao Xiang 4224a806d8SGao Xiang if (ifmt & ~EROFS_I_ALL) { 4324a806d8SGao Xiang erofs_err(inode->i_sb, "unsupported i_format %u of nid %llu", 4424a806d8SGao Xiang ifmt, vi->nid); 4524a806d8SGao Xiang err = -EOPNOTSUPP; 4624a806d8SGao Xiang goto err_out; 4724a806d8SGao Xiang } 4824a806d8SGao Xiang 498a765682SGao Xiang vi->datalayout = erofs_inode_datalayout(ifmt); 508a765682SGao Xiang if (vi->datalayout >= EROFS_INODE_DATALAYOUT_MAX) { 514f761fa2SGao Xiang erofs_err(inode->i_sb, "unsupported datalayout %u of nid %llu", 528a765682SGao Xiang vi->datalayout, vi->nid); 530dcd3c94SGao Xiang err = -EOPNOTSUPP; 540dcd3c94SGao Xiang goto err_out; 5547e4937aSGao Xiang } 5647e4937aSGao Xiang 578a765682SGao Xiang switch (erofs_inode_version(ifmt)) { 588a765682SGao Xiang case EROFS_INODE_LAYOUT_EXTENDED: 598a765682SGao Xiang vi->inode_isize = sizeof(struct erofs_inode_extended); 60c521e3adSGao Xiang /* check if the extended inode acrosses block boundary */ 61c521e3adSGao Xiang if (*ofs + vi->inode_isize <= EROFS_BLKSIZ) { 620dcd3c94SGao Xiang *ofs += vi->inode_isize; 630dcd3c94SGao Xiang die = (struct erofs_inode_extended *)dic; 640dcd3c94SGao Xiang } else { 65c521e3adSGao Xiang const unsigned int gotten = EROFS_BLKSIZ - *ofs; 660dcd3c94SGao Xiang 670dcd3c94SGao Xiang copied = kmalloc(vi->inode_isize, GFP_NOFS); 680dcd3c94SGao Xiang if (!copied) { 690dcd3c94SGao Xiang err = -ENOMEM; 700dcd3c94SGao Xiang goto err_out; 710dcd3c94SGao Xiang } 720dcd3c94SGao Xiang memcpy(copied, dic, gotten); 73c521e3adSGao Xiang kaddr = erofs_read_metabuf(buf, sb, blkaddr + 1, 74c521e3adSGao Xiang EROFS_KMAP); 75c521e3adSGao Xiang if (IS_ERR(kaddr)) { 76c521e3adSGao Xiang erofs_err(sb, "failed to get inode payload block (nid: %llu), err %ld", 77c521e3adSGao Xiang vi->nid, PTR_ERR(kaddr)); 780dcd3c94SGao Xiang kfree(copied); 79c521e3adSGao Xiang return kaddr; 800dcd3c94SGao Xiang } 810dcd3c94SGao Xiang *ofs = vi->inode_isize - gotten; 82c521e3adSGao Xiang memcpy((u8 *)copied + gotten, kaddr, *ofs); 830dcd3c94SGao Xiang die = copied; 840dcd3c94SGao Xiang } 858a765682SGao Xiang vi->xattr_isize = erofs_xattr_ibody_size(die->i_xattr_icount); 8647e4937aSGao Xiang 878a765682SGao Xiang inode->i_mode = le16_to_cpu(die->i_mode); 888a765682SGao Xiang switch (inode->i_mode & S_IFMT) { 898a765682SGao Xiang case S_IFREG: 908a765682SGao Xiang case S_IFDIR: 918a765682SGao Xiang case S_IFLNK: 928a765682SGao Xiang vi->raw_blkaddr = le32_to_cpu(die->i_u.raw_blkaddr); 938a765682SGao Xiang break; 948a765682SGao Xiang case S_IFCHR: 958a765682SGao Xiang case S_IFBLK: 9647e4937aSGao Xiang inode->i_rdev = 978a765682SGao Xiang new_decode_dev(le32_to_cpu(die->i_u.rdev)); 988a765682SGao Xiang break; 998a765682SGao Xiang case S_IFIFO: 1008a765682SGao Xiang case S_IFSOCK: 10147e4937aSGao Xiang inode->i_rdev = 0; 1028a765682SGao Xiang break; 1038a765682SGao Xiang default: 10447e4937aSGao Xiang goto bogusimode; 1058a765682SGao Xiang } 1068a765682SGao Xiang i_uid_write(inode, le32_to_cpu(die->i_uid)); 1078a765682SGao Xiang i_gid_write(inode, le32_to_cpu(die->i_gid)); 1088a765682SGao Xiang set_nlink(inode, le32_to_cpu(die->i_nlink)); 10947e4937aSGao Xiang 110d3938ee2SGao Xiang /* extended inode has its own timestamp */ 111a1108dcdSDavid Anderson inode->i_ctime.tv_sec = le64_to_cpu(die->i_mtime); 112a1108dcdSDavid Anderson inode->i_ctime.tv_nsec = le32_to_cpu(die->i_mtime_nsec); 11347e4937aSGao Xiang 1148a765682SGao Xiang inode->i_size = le64_to_cpu(die->i_size); 11547e4937aSGao Xiang 11647e4937aSGao Xiang /* total blocks for compressed files */ 1178a765682SGao Xiang if (erofs_inode_is_data_compressed(vi->datalayout)) 1188a765682SGao Xiang nblks = le32_to_cpu(die->i_u.compressed_blocks); 119c5aa903aSGao Xiang else if (vi->datalayout == EROFS_INODE_CHUNK_BASED) 120c5aa903aSGao Xiang /* fill chunked inode summary info */ 121c5aa903aSGao Xiang vi->chunkformat = le16_to_cpu(die->i_u.c.format); 1220dcd3c94SGao Xiang kfree(copied); 1231266b4a7SGao Xiang copied = NULL; 1248a765682SGao Xiang break; 1258a765682SGao Xiang case EROFS_INODE_LAYOUT_COMPACT: 1268a765682SGao Xiang vi->inode_isize = sizeof(struct erofs_inode_compact); 1270dcd3c94SGao Xiang *ofs += vi->inode_isize; 1288a765682SGao Xiang vi->xattr_isize = erofs_xattr_ibody_size(dic->i_xattr_icount); 12947e4937aSGao Xiang 1308a765682SGao Xiang inode->i_mode = le16_to_cpu(dic->i_mode); 1318a765682SGao Xiang switch (inode->i_mode & S_IFMT) { 1328a765682SGao Xiang case S_IFREG: 1338a765682SGao Xiang case S_IFDIR: 1348a765682SGao Xiang case S_IFLNK: 1358a765682SGao Xiang vi->raw_blkaddr = le32_to_cpu(dic->i_u.raw_blkaddr); 1368a765682SGao Xiang break; 1378a765682SGao Xiang case S_IFCHR: 1388a765682SGao Xiang case S_IFBLK: 13947e4937aSGao Xiang inode->i_rdev = 1408a765682SGao Xiang new_decode_dev(le32_to_cpu(dic->i_u.rdev)); 1418a765682SGao Xiang break; 1428a765682SGao Xiang case S_IFIFO: 1438a765682SGao Xiang case S_IFSOCK: 14447e4937aSGao Xiang inode->i_rdev = 0; 1458a765682SGao Xiang break; 1468a765682SGao Xiang default: 14747e4937aSGao Xiang goto bogusimode; 1488a765682SGao Xiang } 1498a765682SGao Xiang i_uid_write(inode, le16_to_cpu(dic->i_uid)); 1508a765682SGao Xiang i_gid_write(inode, le16_to_cpu(dic->i_gid)); 1518a765682SGao Xiang set_nlink(inode, le16_to_cpu(dic->i_nlink)); 15247e4937aSGao Xiang 153d3938ee2SGao Xiang /* use build time for compact inodes */ 154d3938ee2SGao Xiang inode->i_ctime.tv_sec = sbi->build_time; 155d3938ee2SGao Xiang inode->i_ctime.tv_nsec = sbi->build_time_nsec; 15647e4937aSGao Xiang 1578a765682SGao Xiang inode->i_size = le32_to_cpu(dic->i_size); 1588a765682SGao Xiang if (erofs_inode_is_data_compressed(vi->datalayout)) 1598a765682SGao Xiang nblks = le32_to_cpu(dic->i_u.compressed_blocks); 160c5aa903aSGao Xiang else if (vi->datalayout == EROFS_INODE_CHUNK_BASED) 161c5aa903aSGao Xiang vi->chunkformat = le16_to_cpu(dic->i_u.c.format); 1628a765682SGao Xiang break; 1638a765682SGao Xiang default: 1644f761fa2SGao Xiang erofs_err(inode->i_sb, 1654f761fa2SGao Xiang "unsupported on-disk inode version %u of nid %llu", 1668a765682SGao Xiang erofs_inode_version(ifmt), vi->nid); 1670dcd3c94SGao Xiang err = -EOPNOTSUPP; 1680dcd3c94SGao Xiang goto err_out; 16947e4937aSGao Xiang } 17047e4937aSGao Xiang 171c5aa903aSGao Xiang if (vi->datalayout == EROFS_INODE_CHUNK_BASED) { 172d705117dSGao Xiang if (vi->chunkformat & ~EROFS_CHUNK_FORMAT_ALL) { 173c5aa903aSGao Xiang erofs_err(inode->i_sb, 174c5aa903aSGao Xiang "unsupported chunk format %x of nid %llu", 175c5aa903aSGao Xiang vi->chunkformat, vi->nid); 176c5aa903aSGao Xiang err = -EOPNOTSUPP; 177c5aa903aSGao Xiang goto err_out; 178c5aa903aSGao Xiang } 179c5aa903aSGao Xiang vi->chunkbits = LOG_BLOCK_SIZE + 180c5aa903aSGao Xiang (vi->chunkformat & EROFS_CHUNK_FORMAT_BLKBITS_MASK); 181c5aa903aSGao Xiang } 182d3938ee2SGao Xiang inode->i_mtime.tv_sec = inode->i_ctime.tv_sec; 183d3938ee2SGao Xiang inode->i_atime.tv_sec = inode->i_ctime.tv_sec; 184d3938ee2SGao Xiang inode->i_mtime.tv_nsec = inode->i_ctime.tv_nsec; 185d3938ee2SGao Xiang inode->i_atime.tv_nsec = inode->i_ctime.tv_nsec; 186d3938ee2SGao Xiang 18706252e9cSGao Xiang inode->i_flags &= ~S_DAX; 188e6242465SGao Xiang if (test_opt(&sbi->opt, DAX_ALWAYS) && S_ISREG(inode->i_mode) && 18906252e9cSGao Xiang vi->datalayout == EROFS_INODE_FLAT_PLAIN) 19006252e9cSGao Xiang inode->i_flags |= S_DAX; 19147e4937aSGao Xiang if (!nblks) 19247e4937aSGao Xiang /* measure inode.i_blocks as generic filesystems */ 19347e4937aSGao Xiang inode->i_blocks = roundup(inode->i_size, EROFS_BLKSIZ) >> 9; 19447e4937aSGao Xiang else 19547e4937aSGao Xiang inode->i_blocks = nblks << LOG_SECTORS_PER_BLOCK; 196c521e3adSGao Xiang return kaddr; 19747e4937aSGao Xiang 19847e4937aSGao Xiang bogusimode: 1994f761fa2SGao Xiang erofs_err(inode->i_sb, "bogus i_mode (%o) @ nid %llu", 2004f761fa2SGao Xiang inode->i_mode, vi->nid); 2010dcd3c94SGao Xiang err = -EFSCORRUPTED; 2020dcd3c94SGao Xiang err_out: 20347e4937aSGao Xiang DBG_BUGON(1); 2040dcd3c94SGao Xiang kfree(copied); 205c521e3adSGao Xiang erofs_put_metabuf(buf); 2060dcd3c94SGao Xiang return ERR_PTR(err); 20747e4937aSGao Xiang } 20847e4937aSGao Xiang 209c521e3adSGao Xiang static int erofs_fill_symlink(struct inode *inode, void *kaddr, 21047e4937aSGao Xiang unsigned int m_pofs) 21147e4937aSGao Xiang { 212a5876e24SGao Xiang struct erofs_inode *vi = EROFS_I(inode); 213a2c75c81SGao Xiang char *lnk; 21447e4937aSGao Xiang 215a2c75c81SGao Xiang /* if it cannot be handled with fast symlink scheme */ 216a2c75c81SGao Xiang if (vi->datalayout != EROFS_INODE_FLAT_INLINE || 217c521e3adSGao Xiang inode->i_size >= EROFS_BLKSIZ) { 218a2c75c81SGao Xiang inode->i_op = &erofs_symlink_iops; 21947e4937aSGao Xiang return 0; 220a2c75c81SGao Xiang } 22147e4937aSGao Xiang 222e2c71e74SGao Xiang lnk = kmalloc(inode->i_size + 1, GFP_KERNEL); 2238d8a09b0SGao Xiang if (!lnk) 22447e4937aSGao Xiang return -ENOMEM; 22547e4937aSGao Xiang 2260dcd3c94SGao Xiang m_pofs += vi->xattr_isize; 227c521e3adSGao Xiang /* inline symlink data shouldn't cross block boundary */ 228c521e3adSGao Xiang if (m_pofs + inode->i_size > EROFS_BLKSIZ) { 22947e4937aSGao Xiang kfree(lnk); 2304f761fa2SGao Xiang erofs_err(inode->i_sb, 2314f761fa2SGao Xiang "inline data cross block boundary @ nid %llu", 23247e4937aSGao Xiang vi->nid); 23347e4937aSGao Xiang DBG_BUGON(1); 23447e4937aSGao Xiang return -EFSCORRUPTED; 23547e4937aSGao Xiang } 236c521e3adSGao Xiang memcpy(lnk, kaddr + m_pofs, inode->i_size); 23747e4937aSGao Xiang lnk[inode->i_size] = '\0'; 23847e4937aSGao Xiang 23947e4937aSGao Xiang inode->i_link = lnk; 240a2c75c81SGao Xiang inode->i_op = &erofs_fast_symlink_iops; 24147e4937aSGao Xiang return 0; 24247e4937aSGao Xiang } 24347e4937aSGao Xiang 24499634bf3SGao Xiang static int erofs_fill_inode(struct inode *inode, int isdir) 24547e4937aSGao Xiang { 246a5876e24SGao Xiang struct erofs_inode *vi = EROFS_I(inode); 247c521e3adSGao Xiang struct erofs_buf buf = __EROFS_BUF_INITIALIZER; 248c521e3adSGao Xiang void *kaddr; 24947e4937aSGao Xiang unsigned int ofs; 2500dcd3c94SGao Xiang int err = 0; 25147e4937aSGao Xiang 25247e4937aSGao Xiang trace_erofs_fill_inode(inode, isdir); 25347e4937aSGao Xiang 2540dcd3c94SGao Xiang /* read inode base data from disk */ 255c521e3adSGao Xiang kaddr = erofs_read_inode(&buf, inode, &ofs); 256c521e3adSGao Xiang if (IS_ERR(kaddr)) 257c521e3adSGao Xiang return PTR_ERR(kaddr); 25884947eb6SGao Xiang 25947e4937aSGao Xiang /* setup the new inode */ 260512f9922SPratik Shinde switch (inode->i_mode & S_IFMT) { 261512f9922SPratik Shinde case S_IFREG: 26247e4937aSGao Xiang inode->i_op = &erofs_generic_iops; 263a08e67a0SHuang Jianan if (erofs_inode_is_data_compressed(vi->datalayout)) 26447e4937aSGao Xiang inode->i_fop = &generic_ro_fops; 265a08e67a0SHuang Jianan else 266a08e67a0SHuang Jianan inode->i_fop = &erofs_file_fops; 267512f9922SPratik Shinde break; 268512f9922SPratik Shinde case S_IFDIR: 26947e4937aSGao Xiang inode->i_op = &erofs_dir_iops; 27047e4937aSGao Xiang inode->i_fop = &erofs_dir_fops; 271512f9922SPratik Shinde break; 272512f9922SPratik Shinde case S_IFLNK: 273c521e3adSGao Xiang err = erofs_fill_symlink(inode, kaddr, ofs); 274a2c75c81SGao Xiang if (err) 275a2c75c81SGao Xiang goto out_unlock; 27647e4937aSGao Xiang inode_nohighmem(inode); 277512f9922SPratik Shinde break; 278512f9922SPratik Shinde case S_IFCHR: 279512f9922SPratik Shinde case S_IFBLK: 280512f9922SPratik Shinde case S_IFIFO: 281512f9922SPratik Shinde case S_IFSOCK: 28247e4937aSGao Xiang inode->i_op = &erofs_generic_iops; 28347e4937aSGao Xiang init_special_inode(inode, inode->i_mode, inode->i_rdev); 28447e4937aSGao Xiang goto out_unlock; 285512f9922SPratik Shinde default: 28647e4937aSGao Xiang err = -EFSCORRUPTED; 28747e4937aSGao Xiang goto out_unlock; 28847e4937aSGao Xiang } 28947e4937aSGao Xiang 2908a765682SGao Xiang if (erofs_inode_is_data_compressed(vi->datalayout)) { 29147e4937aSGao Xiang err = z_erofs_fill_inode(inode); 29247e4937aSGao Xiang goto out_unlock; 29347e4937aSGao Xiang } 29447e4937aSGao Xiang inode->i_mapping->a_ops = &erofs_raw_access_aops; 295*1442b02bSJeffle Xu #ifdef CONFIG_EROFS_FS_ONDEMAND 296*1442b02bSJeffle Xu if (erofs_is_fscache_mode(inode->i_sb)) 297*1442b02bSJeffle Xu inode->i_mapping->a_ops = &erofs_fscache_access_aops; 298*1442b02bSJeffle Xu #endif 29947e4937aSGao Xiang 30047e4937aSGao Xiang out_unlock: 301c521e3adSGao Xiang erofs_put_metabuf(&buf); 30247e4937aSGao Xiang return err; 30347e4937aSGao Xiang } 30447e4937aSGao Xiang 30547e4937aSGao Xiang /* 30647e4937aSGao Xiang * erofs nid is 64bits, but i_ino is 'unsigned long', therefore 30747e4937aSGao Xiang * we should do more for 32-bit platform to find the right inode. 30847e4937aSGao Xiang */ 30947e4937aSGao Xiang static int erofs_ilookup_test_actor(struct inode *inode, void *opaque) 31047e4937aSGao Xiang { 31147e4937aSGao Xiang const erofs_nid_t nid = *(erofs_nid_t *)opaque; 31247e4937aSGao Xiang 313a5876e24SGao Xiang return EROFS_I(inode)->nid == nid; 31447e4937aSGao Xiang } 31547e4937aSGao Xiang 31647e4937aSGao Xiang static int erofs_iget_set_actor(struct inode *inode, void *opaque) 31747e4937aSGao Xiang { 31847e4937aSGao Xiang const erofs_nid_t nid = *(erofs_nid_t *)opaque; 31947e4937aSGao Xiang 32047e4937aSGao Xiang inode->i_ino = erofs_inode_hash(nid); 32147e4937aSGao Xiang return 0; 32247e4937aSGao Xiang } 32347e4937aSGao Xiang 32447e4937aSGao Xiang static inline struct inode *erofs_iget_locked(struct super_block *sb, 32547e4937aSGao Xiang erofs_nid_t nid) 32647e4937aSGao Xiang { 32747e4937aSGao Xiang const unsigned long hashval = erofs_inode_hash(nid); 32847e4937aSGao Xiang 32947e4937aSGao Xiang return iget5_locked(sb, hashval, erofs_ilookup_test_actor, 33047e4937aSGao Xiang erofs_iget_set_actor, &nid); 33147e4937aSGao Xiang } 33247e4937aSGao Xiang 33347e4937aSGao Xiang struct inode *erofs_iget(struct super_block *sb, 33447e4937aSGao Xiang erofs_nid_t nid, 33547e4937aSGao Xiang bool isdir) 33647e4937aSGao Xiang { 33747e4937aSGao Xiang struct inode *inode = erofs_iget_locked(sb, nid); 33847e4937aSGao Xiang 3398d8a09b0SGao Xiang if (!inode) 34047e4937aSGao Xiang return ERR_PTR(-ENOMEM); 34147e4937aSGao Xiang 34247e4937aSGao Xiang if (inode->i_state & I_NEW) { 34347e4937aSGao Xiang int err; 344a5876e24SGao Xiang struct erofs_inode *vi = EROFS_I(inode); 34547e4937aSGao Xiang 34647e4937aSGao Xiang vi->nid = nid; 34747e4937aSGao Xiang 34899634bf3SGao Xiang err = erofs_fill_inode(inode, isdir); 3498d8a09b0SGao Xiang if (!err) 35047e4937aSGao Xiang unlock_new_inode(inode); 35147e4937aSGao Xiang else { 35247e4937aSGao Xiang iget_failed(inode); 35347e4937aSGao Xiang inode = ERR_PTR(err); 35447e4937aSGao Xiang } 35547e4937aSGao Xiang } 35647e4937aSGao Xiang return inode; 35747e4937aSGao Xiang } 35847e4937aSGao Xiang 359549c7297SChristian Brauner int erofs_getattr(struct user_namespace *mnt_userns, const struct path *path, 360549c7297SChristian Brauner struct kstat *stat, u32 request_mask, 361549c7297SChristian Brauner unsigned int query_flags) 36247e4937aSGao Xiang { 36347e4937aSGao Xiang struct inode *const inode = d_inode(path->dentry); 36447e4937aSGao Xiang 365a5876e24SGao Xiang if (erofs_inode_is_data_compressed(EROFS_I(inode)->datalayout)) 36647e4937aSGao Xiang stat->attributes |= STATX_ATTR_COMPRESSED; 36747e4937aSGao Xiang 36847e4937aSGao Xiang stat->attributes |= STATX_ATTR_IMMUTABLE; 36947e4937aSGao Xiang stat->attributes_mask |= (STATX_ATTR_COMPRESSED | 37047e4937aSGao Xiang STATX_ATTR_IMMUTABLE); 37147e4937aSGao Xiang 3726c459b78SChao Yu generic_fillattr(mnt_userns, inode, stat); 37347e4937aSGao Xiang return 0; 37447e4937aSGao Xiang } 37547e4937aSGao Xiang 37647e4937aSGao Xiang const struct inode_operations erofs_generic_iops = { 37747e4937aSGao Xiang .getattr = erofs_getattr, 37847e4937aSGao Xiang .listxattr = erofs_listxattr, 37947e4937aSGao Xiang .get_acl = erofs_get_acl, 380eadcd6b5SGao Xiang .fiemap = erofs_fiemap, 38147e4937aSGao Xiang }; 38247e4937aSGao Xiang 38347e4937aSGao Xiang const struct inode_operations erofs_symlink_iops = { 38447e4937aSGao Xiang .get_link = page_get_link, 38547e4937aSGao Xiang .getattr = erofs_getattr, 38647e4937aSGao Xiang .listxattr = erofs_listxattr, 38747e4937aSGao Xiang .get_acl = erofs_get_acl, 38847e4937aSGao Xiang }; 38947e4937aSGao Xiang 39047e4937aSGao Xiang const struct inode_operations erofs_fast_symlink_iops = { 39147e4937aSGao Xiang .get_link = simple_get_link, 39247e4937aSGao Xiang .getattr = erofs_getattr, 39347e4937aSGao Xiang .listxattr = erofs_listxattr, 39447e4937aSGao Xiang .get_acl = erofs_get_acl, 39547e4937aSGao Xiang }; 396