11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * linux/fs/ufs/inode.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) 1998 51da177e4SLinus Torvalds * Daniel Pirkl <daniel.pirkl@email.cz> 61da177e4SLinus Torvalds * Charles University, Faculty of Mathematics and Physics 71da177e4SLinus Torvalds * 81da177e4SLinus Torvalds * from 91da177e4SLinus Torvalds * 101da177e4SLinus Torvalds * linux/fs/ext2/inode.c 111da177e4SLinus Torvalds * 121da177e4SLinus Torvalds * Copyright (C) 1992, 1993, 1994, 1995 131da177e4SLinus Torvalds * Remy Card (card@masi.ibp.fr) 141da177e4SLinus Torvalds * Laboratoire MASI - Institut Blaise Pascal 151da177e4SLinus Torvalds * Universite Pierre et Marie Curie (Paris VI) 161da177e4SLinus Torvalds * 171da177e4SLinus Torvalds * from 181da177e4SLinus Torvalds * 191da177e4SLinus Torvalds * linux/fs/minix/inode.c 201da177e4SLinus Torvalds * 211da177e4SLinus Torvalds * Copyright (C) 1991, 1992 Linus Torvalds 221da177e4SLinus Torvalds * 231da177e4SLinus Torvalds * Goal-directed block allocation by Stephen Tweedie (sct@dcs.ed.ac.uk), 1993 241da177e4SLinus Torvalds * Big-endian to little-endian byte-swapping/bitmaps by 251da177e4SLinus Torvalds * David S. Miller (davem@caip.rutgers.edu), 1995 261da177e4SLinus Torvalds */ 271da177e4SLinus Torvalds 281da177e4SLinus Torvalds #include <asm/uaccess.h> 291da177e4SLinus Torvalds 301da177e4SLinus Torvalds #include <linux/errno.h> 311da177e4SLinus Torvalds #include <linux/fs.h> 321da177e4SLinus Torvalds #include <linux/time.h> 331da177e4SLinus Torvalds #include <linux/stat.h> 341da177e4SLinus Torvalds #include <linux/string.h> 351da177e4SLinus Torvalds #include <linux/mm.h> 361da177e4SLinus Torvalds #include <linux/buffer_head.h> 37a9185b41SChristoph Hellwig #include <linux/writeback.h> 381da177e4SLinus Torvalds 39e5420598SMike Frysinger #include "ufs_fs.h" 40bcd6d4ecSChristoph Hellwig #include "ufs.h" 411da177e4SLinus Torvalds #include "swab.h" 421da177e4SLinus Torvalds #include "util.h" 431da177e4SLinus Torvalds 44788257d6SArnd Bergmann static u64 ufs_frag_map(struct inode *inode, sector_t frag, bool needs_lock); 45138bb68aSAdrian Bunk 461da177e4SLinus Torvalds static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t offsets[4]) 471da177e4SLinus Torvalds { 481da177e4SLinus Torvalds struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi; 491da177e4SLinus Torvalds int ptrs = uspi->s_apb; 501da177e4SLinus Torvalds int ptrs_bits = uspi->s_apbshift; 511da177e4SLinus Torvalds const long direct_blocks = UFS_NDADDR, 521da177e4SLinus Torvalds indirect_blocks = ptrs, 531da177e4SLinus Torvalds double_blocks = (1 << (ptrs_bits * 2)); 541da177e4SLinus Torvalds int n = 0; 551da177e4SLinus Torvalds 561da177e4SLinus Torvalds 57abf5d15fSEvgeniy Dushistov UFSD("ptrs=uspi->s_apb = %d,double_blocks=%ld \n",ptrs,double_blocks); 5837044c86SRoel Kluin if (i_block < direct_blocks) { 591da177e4SLinus Torvalds offsets[n++] = i_block; 601da177e4SLinus Torvalds } else if ((i_block -= direct_blocks) < indirect_blocks) { 611da177e4SLinus Torvalds offsets[n++] = UFS_IND_BLOCK; 621da177e4SLinus Torvalds offsets[n++] = i_block; 631da177e4SLinus Torvalds } else if ((i_block -= indirect_blocks) < double_blocks) { 641da177e4SLinus Torvalds offsets[n++] = UFS_DIND_BLOCK; 651da177e4SLinus Torvalds offsets[n++] = i_block >> ptrs_bits; 661da177e4SLinus Torvalds offsets[n++] = i_block & (ptrs - 1); 671da177e4SLinus Torvalds } else if (((i_block -= double_blocks) >> (ptrs_bits * 2)) < ptrs) { 681da177e4SLinus Torvalds offsets[n++] = UFS_TIND_BLOCK; 691da177e4SLinus Torvalds offsets[n++] = i_block >> (ptrs_bits * 2); 701da177e4SLinus Torvalds offsets[n++] = (i_block >> ptrs_bits) & (ptrs - 1); 711da177e4SLinus Torvalds offsets[n++] = i_block & (ptrs - 1); 721da177e4SLinus Torvalds } else { 731da177e4SLinus Torvalds ufs_warning(inode->i_sb, "ufs_block_to_path", "block > big"); 741da177e4SLinus Torvalds } 751da177e4SLinus Torvalds return n; 761da177e4SLinus Torvalds } 771da177e4SLinus Torvalds 781da177e4SLinus Torvalds /* 791da177e4SLinus Torvalds * Returns the location of the fragment from 8025985edcSLucas De Marchi * the beginning of the filesystem. 811da177e4SLinus Torvalds */ 821da177e4SLinus Torvalds 83788257d6SArnd Bergmann static u64 ufs_frag_map(struct inode *inode, sector_t frag, bool needs_lock) 841da177e4SLinus Torvalds { 851da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 861da177e4SLinus Torvalds struct super_block *sb = inode->i_sb; 871da177e4SLinus Torvalds struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 881da177e4SLinus Torvalds u64 mask = (u64) uspi->s_apbmask>>uspi->s_fpbshift; 891da177e4SLinus Torvalds int shift = uspi->s_apbshift-uspi->s_fpbshift; 901da177e4SLinus Torvalds sector_t offsets[4], *p; 911da177e4SLinus Torvalds int depth = ufs_block_to_path(inode, frag >> uspi->s_fpbshift, offsets); 921da177e4SLinus Torvalds u64 ret = 0L; 931da177e4SLinus Torvalds __fs32 block; 941da177e4SLinus Torvalds __fs64 u2_block = 0L; 951da177e4SLinus Torvalds unsigned flags = UFS_SB(sb)->s_flags; 961da177e4SLinus Torvalds u64 temp = 0L; 971da177e4SLinus Torvalds 98abf5d15fSEvgeniy Dushistov UFSD(": frag = %llu depth = %d\n", (unsigned long long)frag, depth); 997256d819SAndrew Morton UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n", 1007256d819SAndrew Morton uspi->s_fpbshift, uspi->s_apbmask, 1017256d819SAndrew Morton (unsigned long long)mask); 1021da177e4SLinus Torvalds 1031da177e4SLinus Torvalds if (depth == 0) 1041da177e4SLinus Torvalds return 0; 1051da177e4SLinus Torvalds 1061da177e4SLinus Torvalds p = offsets; 1071da177e4SLinus Torvalds 108788257d6SArnd Bergmann if (needs_lock) 109788257d6SArnd Bergmann lock_ufs(sb); 1101da177e4SLinus Torvalds if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 1111da177e4SLinus Torvalds goto ufs2; 1121da177e4SLinus Torvalds 1131da177e4SLinus Torvalds block = ufsi->i_u1.i_data[*p++]; 1141da177e4SLinus Torvalds if (!block) 1151da177e4SLinus Torvalds goto out; 1161da177e4SLinus Torvalds while (--depth) { 1171da177e4SLinus Torvalds struct buffer_head *bh; 1181da177e4SLinus Torvalds sector_t n = *p++; 1191da177e4SLinus Torvalds 1201da177e4SLinus Torvalds bh = sb_bread(sb, uspi->s_sbbase + fs32_to_cpu(sb, block)+(n>>shift)); 1211da177e4SLinus Torvalds if (!bh) 1221da177e4SLinus Torvalds goto out; 1231da177e4SLinus Torvalds block = ((__fs32 *) bh->b_data)[n & mask]; 1241da177e4SLinus Torvalds brelse (bh); 1251da177e4SLinus Torvalds if (!block) 1261da177e4SLinus Torvalds goto out; 1271da177e4SLinus Torvalds } 1281da177e4SLinus Torvalds ret = (u64) (uspi->s_sbbase + fs32_to_cpu(sb, block) + (frag & uspi->s_fpbmask)); 1291da177e4SLinus Torvalds goto out; 1301da177e4SLinus Torvalds ufs2: 1311da177e4SLinus Torvalds u2_block = ufsi->i_u1.u2_i_data[*p++]; 1321da177e4SLinus Torvalds if (!u2_block) 1331da177e4SLinus Torvalds goto out; 1341da177e4SLinus Torvalds 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvalds while (--depth) { 1371da177e4SLinus Torvalds struct buffer_head *bh; 1381da177e4SLinus Torvalds sector_t n = *p++; 1391da177e4SLinus Torvalds 1401da177e4SLinus Torvalds 1411da177e4SLinus Torvalds temp = (u64)(uspi->s_sbbase) + fs64_to_cpu(sb, u2_block); 1421da177e4SLinus Torvalds bh = sb_bread(sb, temp +(u64) (n>>shift)); 1431da177e4SLinus Torvalds if (!bh) 1441da177e4SLinus Torvalds goto out; 1451da177e4SLinus Torvalds u2_block = ((__fs64 *)bh->b_data)[n & mask]; 1461da177e4SLinus Torvalds brelse(bh); 1471da177e4SLinus Torvalds if (!u2_block) 1481da177e4SLinus Torvalds goto out; 1491da177e4SLinus Torvalds } 1501da177e4SLinus Torvalds temp = (u64)uspi->s_sbbase + fs64_to_cpu(sb, u2_block); 1511da177e4SLinus Torvalds ret = temp + (u64) (frag & uspi->s_fpbmask); 1521da177e4SLinus Torvalds 1531da177e4SLinus Torvalds out: 154788257d6SArnd Bergmann if (needs_lock) 155788257d6SArnd Bergmann unlock_ufs(sb); 1561da177e4SLinus Torvalds return ret; 1571da177e4SLinus Torvalds } 1581da177e4SLinus Torvalds 159022a6dc5SEvgeniy Dushistov /** 160022a6dc5SEvgeniy Dushistov * ufs_inode_getfrag() - allocate new fragment(s) 161edc023caSFabian Frederick * @inode: pointer to inode 162edc023caSFabian Frederick * @fragment: number of `fragment' which hold pointer 163022a6dc5SEvgeniy Dushistov * to new allocated fragment(s) 164edc023caSFabian Frederick * @new_fragment: number of new allocated fragment(s) 165edc023caSFabian Frederick * @required: how many fragment(s) we require 166edc023caSFabian Frederick * @err: we set it if something wrong 167edc023caSFabian Frederick * @phys: pointer to where we save physical number of new allocated fragments, 168022a6dc5SEvgeniy Dushistov * NULL if we allocate not data(indirect blocks for example). 169edc023caSFabian Frederick * @new: we set it if we allocate new block 170edc023caSFabian Frederick * @locked_page: for ufs_new_fragments() 171022a6dc5SEvgeniy Dushistov */ 172022a6dc5SEvgeniy Dushistov static struct buffer_head * 17354fb996aSEvgeniy Dushistov ufs_inode_getfrag(struct inode *inode, u64 fragment, 174022a6dc5SEvgeniy Dushistov sector_t new_fragment, unsigned int required, int *err, 1756ef4d6bfSEvgeniy Dushistov long *phys, int *new, struct page *locked_page) 1761da177e4SLinus Torvalds { 1771da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 178022a6dc5SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 179022a6dc5SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 1801da177e4SLinus Torvalds struct buffer_head * result; 18154fb996aSEvgeniy Dushistov unsigned blockoff, lastblockoff; 18254fb996aSEvgeniy Dushistov u64 tmp, goal, lastfrag, block, lastblock; 18354fb996aSEvgeniy Dushistov void *p, *p2; 1841da177e4SLinus Torvalds 18554fb996aSEvgeniy Dushistov UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, required %u, " 18654fb996aSEvgeniy Dushistov "metadata %d\n", inode->i_ino, (unsigned long long)fragment, 187022a6dc5SEvgeniy Dushistov (unsigned long long)new_fragment, required, !phys); 1881da177e4SLinus Torvalds 1891da177e4SLinus Torvalds /* TODO : to be done for write support 1901da177e4SLinus Torvalds if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 1911da177e4SLinus Torvalds goto ufs2; 1921da177e4SLinus Torvalds */ 1931da177e4SLinus Torvalds 1941da177e4SLinus Torvalds block = ufs_fragstoblks (fragment); 1951da177e4SLinus Torvalds blockoff = ufs_fragnum (fragment); 19654fb996aSEvgeniy Dushistov p = ufs_get_direct_data_ptr(uspi, ufsi, block); 19754fb996aSEvgeniy Dushistov 1981da177e4SLinus Torvalds goal = 0; 1991da177e4SLinus Torvalds 2001da177e4SLinus Torvalds repeat: 20154fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, p); 20254fb996aSEvgeniy Dushistov 2031da177e4SLinus Torvalds lastfrag = ufsi->i_lastfrag; 2041da177e4SLinus Torvalds if (tmp && fragment < lastfrag) { 205022a6dc5SEvgeniy Dushistov if (!phys) { 2061da177e4SLinus Torvalds result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 20754fb996aSEvgeniy Dushistov if (tmp == ufs_data_ptr_to_cpu(sb, p)) { 20854fb996aSEvgeniy Dushistov UFSD("EXIT, result %llu\n", 20954fb996aSEvgeniy Dushistov (unsigned long long)tmp + blockoff); 2101da177e4SLinus Torvalds return result; 2111da177e4SLinus Torvalds } 2121da177e4SLinus Torvalds brelse (result); 2131da177e4SLinus Torvalds goto repeat; 2141da177e4SLinus Torvalds } else { 2154b25a37eSEvgeniy Dushistov *phys = uspi->s_sbbase + tmp + blockoff; 2161da177e4SLinus Torvalds return NULL; 2171da177e4SLinus Torvalds } 2181da177e4SLinus Torvalds } 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds lastblock = ufs_fragstoblks (lastfrag); 2211da177e4SLinus Torvalds lastblockoff = ufs_fragnum (lastfrag); 2221da177e4SLinus Torvalds /* 2231da177e4SLinus Torvalds * We will extend file into new block beyond last allocated block 2241da177e4SLinus Torvalds */ 2251da177e4SLinus Torvalds if (lastblock < block) { 2261da177e4SLinus Torvalds /* 2271da177e4SLinus Torvalds * We must reallocate last allocated block 2281da177e4SLinus Torvalds */ 2291da177e4SLinus Torvalds if (lastblockoff) { 23054fb996aSEvgeniy Dushistov p2 = ufs_get_direct_data_ptr(uspi, ufsi, lastblock); 2311da177e4SLinus Torvalds tmp = ufs_new_fragments(inode, p2, lastfrag, 23254fb996aSEvgeniy Dushistov ufs_data_ptr_to_cpu(sb, p2), 23354fb996aSEvgeniy Dushistov uspi->s_fpb - lastblockoff, 2346ef4d6bfSEvgeniy Dushistov err, locked_page); 2351da177e4SLinus Torvalds if (!tmp) { 2361da177e4SLinus Torvalds if (lastfrag != ufsi->i_lastfrag) 2371da177e4SLinus Torvalds goto repeat; 2381da177e4SLinus Torvalds else 2391da177e4SLinus Torvalds return NULL; 2401da177e4SLinus Torvalds } 2411da177e4SLinus Torvalds lastfrag = ufsi->i_lastfrag; 2421da177e4SLinus Torvalds 2431da177e4SLinus Torvalds } 24454fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, 24554fb996aSEvgeniy Dushistov ufs_get_direct_data_ptr(uspi, ufsi, 24654fb996aSEvgeniy Dushistov lastblock)); 247c37336b0SEvgeniy Dushistov if (tmp) 248c37336b0SEvgeniy Dushistov goal = tmp + uspi->s_fpb; 2491da177e4SLinus Torvalds tmp = ufs_new_fragments (inode, p, fragment - blockoff, 2506ef4d6bfSEvgeniy Dushistov goal, required + blockoff, 251a685e26fSEvgeniy Dushistov err, 252a685e26fSEvgeniy Dushistov phys != NULL ? locked_page : NULL); 25354fb996aSEvgeniy Dushistov } else if (lastblock == block) { 2541da177e4SLinus Torvalds /* 2551da177e4SLinus Torvalds * We will extend last allocated block 2561da177e4SLinus Torvalds */ 25754fb996aSEvgeniy Dushistov tmp = ufs_new_fragments(inode, p, fragment - 25854fb996aSEvgeniy Dushistov (blockoff - lastblockoff), 25954fb996aSEvgeniy Dushistov ufs_data_ptr_to_cpu(sb, p), 26054fb996aSEvgeniy Dushistov required + (blockoff - lastblockoff), 261a685e26fSEvgeniy Dushistov err, phys != NULL ? locked_page : NULL); 262c37336b0SEvgeniy Dushistov } else /* (lastblock > block) */ { 2631da177e4SLinus Torvalds /* 2641da177e4SLinus Torvalds * We will allocate new block before last allocated block 2651da177e4SLinus Torvalds */ 266c37336b0SEvgeniy Dushistov if (block) { 26754fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, 26854fb996aSEvgeniy Dushistov ufs_get_direct_data_ptr(uspi, ufsi, block - 1)); 269c37336b0SEvgeniy Dushistov if (tmp) 2701da177e4SLinus Torvalds goal = tmp + uspi->s_fpb; 271c37336b0SEvgeniy Dushistov } 2721da177e4SLinus Torvalds tmp = ufs_new_fragments(inode, p, fragment - blockoff, 273a685e26fSEvgeniy Dushistov goal, uspi->s_fpb, err, 274a685e26fSEvgeniy Dushistov phys != NULL ? locked_page : NULL); 2751da177e4SLinus Torvalds } 2761da177e4SLinus Torvalds if (!tmp) { 27754fb996aSEvgeniy Dushistov if ((!blockoff && ufs_data_ptr_to_cpu(sb, p)) || 2781da177e4SLinus Torvalds (blockoff && lastfrag != ufsi->i_lastfrag)) 2791da177e4SLinus Torvalds goto repeat; 2801da177e4SLinus Torvalds *err = -ENOSPC; 2811da177e4SLinus Torvalds return NULL; 2821da177e4SLinus Torvalds } 2831da177e4SLinus Torvalds 284022a6dc5SEvgeniy Dushistov if (!phys) { 2854b25a37eSEvgeniy Dushistov result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 2861da177e4SLinus Torvalds } else { 2874b25a37eSEvgeniy Dushistov *phys = uspi->s_sbbase + tmp + blockoff; 2881da177e4SLinus Torvalds result = NULL; 2891da177e4SLinus Torvalds *err = 0; 2901da177e4SLinus Torvalds *new = 1; 2911da177e4SLinus Torvalds } 2921da177e4SLinus Torvalds 2931da177e4SLinus Torvalds inode->i_ctime = CURRENT_TIME_SEC; 2941da177e4SLinus Torvalds if (IS_SYNC(inode)) 2951da177e4SLinus Torvalds ufs_sync_inode (inode); 2961da177e4SLinus Torvalds mark_inode_dirty(inode); 29754fb996aSEvgeniy Dushistov UFSD("EXIT, result %llu\n", (unsigned long long)tmp + blockoff); 2981da177e4SLinus Torvalds return result; 2991da177e4SLinus Torvalds 3001da177e4SLinus Torvalds /* This part : To be implemented .... 3011da177e4SLinus Torvalds Required only for writing, not required for READ-ONLY. 3021da177e4SLinus Torvalds ufs2: 3031da177e4SLinus Torvalds 3041da177e4SLinus Torvalds u2_block = ufs_fragstoblks(fragment); 3051da177e4SLinus Torvalds u2_blockoff = ufs_fragnum(fragment); 3061da177e4SLinus Torvalds p = ufsi->i_u1.u2_i_data + block; 3071da177e4SLinus Torvalds goal = 0; 3081da177e4SLinus Torvalds 3091da177e4SLinus Torvalds repeat2: 3101da177e4SLinus Torvalds tmp = fs32_to_cpu(sb, *p); 3111da177e4SLinus Torvalds lastfrag = ufsi->i_lastfrag; 3121da177e4SLinus Torvalds 3131da177e4SLinus Torvalds */ 3141da177e4SLinus Torvalds } 3151da177e4SLinus Torvalds 316022a6dc5SEvgeniy Dushistov /** 317022a6dc5SEvgeniy Dushistov * ufs_inode_getblock() - allocate new block 318edc023caSFabian Frederick * @inode: pointer to inode 319edc023caSFabian Frederick * @bh: pointer to block which hold "pointer" to new allocated block 320edc023caSFabian Frederick * @fragment: number of `fragment' which hold pointer 321022a6dc5SEvgeniy Dushistov * to new allocated block 322edc023caSFabian Frederick * @new_fragment: number of new allocated fragment 323022a6dc5SEvgeniy Dushistov * (block will hold this fragment and also uspi->s_fpb-1) 324edc023caSFabian Frederick * @err: see ufs_inode_getfrag() 325edc023caSFabian Frederick * @phys: see ufs_inode_getfrag() 326edc023caSFabian Frederick * @new: see ufs_inode_getfrag() 327edc023caSFabian Frederick * @locked_page: see ufs_inode_getfrag() 328022a6dc5SEvgeniy Dushistov */ 329022a6dc5SEvgeniy Dushistov static struct buffer_head * 330022a6dc5SEvgeniy Dushistov ufs_inode_getblock(struct inode *inode, struct buffer_head *bh, 33154fb996aSEvgeniy Dushistov u64 fragment, sector_t new_fragment, int *err, 3326ef4d6bfSEvgeniy Dushistov long *phys, int *new, struct page *locked_page) 3331da177e4SLinus Torvalds { 334022a6dc5SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 335022a6dc5SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 3361da177e4SLinus Torvalds struct buffer_head * result; 33754fb996aSEvgeniy Dushistov unsigned blockoff; 33854fb996aSEvgeniy Dushistov u64 tmp, goal, block; 33954fb996aSEvgeniy Dushistov void *p; 3401da177e4SLinus Torvalds 3411da177e4SLinus Torvalds block = ufs_fragstoblks (fragment); 3421da177e4SLinus Torvalds blockoff = ufs_fragnum (fragment); 3431da177e4SLinus Torvalds 34454fb996aSEvgeniy Dushistov UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, metadata %d\n", 34554fb996aSEvgeniy Dushistov inode->i_ino, (unsigned long long)fragment, 34654fb996aSEvgeniy Dushistov (unsigned long long)new_fragment, !phys); 3471da177e4SLinus Torvalds 3481da177e4SLinus Torvalds result = NULL; 3491da177e4SLinus Torvalds if (!bh) 3501da177e4SLinus Torvalds goto out; 3511da177e4SLinus Torvalds if (!buffer_uptodate(bh)) { 3521da177e4SLinus Torvalds ll_rw_block (READ, 1, &bh); 3531da177e4SLinus Torvalds wait_on_buffer (bh); 3541da177e4SLinus Torvalds if (!buffer_uptodate(bh)) 3551da177e4SLinus Torvalds goto out; 3561da177e4SLinus Torvalds } 35754fb996aSEvgeniy Dushistov if (uspi->fs_magic == UFS2_MAGIC) 35854fb996aSEvgeniy Dushistov p = (__fs64 *)bh->b_data + block; 35954fb996aSEvgeniy Dushistov else 3601da177e4SLinus Torvalds p = (__fs32 *)bh->b_data + block; 3611da177e4SLinus Torvalds repeat: 36254fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, p); 3631da177e4SLinus Torvalds if (tmp) { 364022a6dc5SEvgeniy Dushistov if (!phys) { 3651da177e4SLinus Torvalds result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 36654fb996aSEvgeniy Dushistov if (tmp == ufs_data_ptr_to_cpu(sb, p)) 3671da177e4SLinus Torvalds goto out; 3681da177e4SLinus Torvalds brelse (result); 3691da177e4SLinus Torvalds goto repeat; 3701da177e4SLinus Torvalds } else { 3714b25a37eSEvgeniy Dushistov *phys = uspi->s_sbbase + tmp + blockoff; 3721da177e4SLinus Torvalds goto out; 3731da177e4SLinus Torvalds } 3741da177e4SLinus Torvalds } 3751da177e4SLinus Torvalds 37654fb996aSEvgeniy Dushistov if (block && (uspi->fs_magic == UFS2_MAGIC ? 37754fb996aSEvgeniy Dushistov (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[block-1])) : 37854fb996aSEvgeniy Dushistov (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[block-1])))) 3791da177e4SLinus Torvalds goal = tmp + uspi->s_fpb; 3801da177e4SLinus Torvalds else 3811da177e4SLinus Torvalds goal = bh->b_blocknr + uspi->s_fpb; 3826ef4d6bfSEvgeniy Dushistov tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal, 3836ef4d6bfSEvgeniy Dushistov uspi->s_fpb, err, locked_page); 3841da177e4SLinus Torvalds if (!tmp) { 38554fb996aSEvgeniy Dushistov if (ufs_data_ptr_to_cpu(sb, p)) 3861da177e4SLinus Torvalds goto repeat; 3871da177e4SLinus Torvalds goto out; 3881da177e4SLinus Torvalds } 3891da177e4SLinus Torvalds 390c9a27b5dSEvgeniy Dushistov 391022a6dc5SEvgeniy Dushistov if (!phys) { 3924b25a37eSEvgeniy Dushistov result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 3931da177e4SLinus Torvalds } else { 3944b25a37eSEvgeniy Dushistov *phys = uspi->s_sbbase + tmp + blockoff; 3951da177e4SLinus Torvalds *new = 1; 3961da177e4SLinus Torvalds } 3971da177e4SLinus Torvalds 3981da177e4SLinus Torvalds mark_buffer_dirty(bh); 3991da177e4SLinus Torvalds if (IS_SYNC(inode)) 4001da177e4SLinus Torvalds sync_dirty_buffer(bh); 4011da177e4SLinus Torvalds inode->i_ctime = CURRENT_TIME_SEC; 4021da177e4SLinus Torvalds mark_inode_dirty(inode); 40354fb996aSEvgeniy Dushistov UFSD("result %llu\n", (unsigned long long)tmp + blockoff); 4041da177e4SLinus Torvalds out: 4051da177e4SLinus Torvalds brelse (bh); 406abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 4071da177e4SLinus Torvalds return result; 4081da177e4SLinus Torvalds } 4091da177e4SLinus Torvalds 410022a6dc5SEvgeniy Dushistov /** 4117422caa5SAlessio Igor Bogani * ufs_getfrag_block() - `get_block_t' function, interface between UFS and 412022a6dc5SEvgeniy Dushistov * readpage, writepage and so on 4131da177e4SLinus Torvalds */ 4141da177e4SLinus Torvalds 41509114eb8SEvgeniy Dushistov int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create) 4161da177e4SLinus Torvalds { 4171da177e4SLinus Torvalds struct super_block * sb = inode->i_sb; 418788257d6SArnd Bergmann struct ufs_sb_info * sbi = UFS_SB(sb); 419788257d6SArnd Bergmann struct ufs_sb_private_info * uspi = sbi->s_uspi; 4201da177e4SLinus Torvalds struct buffer_head * bh; 4211da177e4SLinus Torvalds int ret, err, new; 4221da177e4SLinus Torvalds unsigned long ptr,phys; 4231da177e4SLinus Torvalds u64 phys64 = 0; 424788257d6SArnd Bergmann bool needs_lock = (sbi->mutex_owner != current); 4251da177e4SLinus Torvalds 4261da177e4SLinus Torvalds if (!create) { 427788257d6SArnd Bergmann phys64 = ufs_frag_map(inode, fragment, needs_lock); 4287256d819SAndrew Morton UFSD("phys64 = %llu\n", (unsigned long long)phys64); 4291da177e4SLinus Torvalds if (phys64) 4301da177e4SLinus Torvalds map_bh(bh_result, sb, phys64); 4311da177e4SLinus Torvalds return 0; 4321da177e4SLinus Torvalds } 4331da177e4SLinus Torvalds 4341da177e4SLinus Torvalds /* This code entered only while writing ....? */ 4351da177e4SLinus Torvalds 4361da177e4SLinus Torvalds err = -EIO; 4371da177e4SLinus Torvalds new = 0; 4381da177e4SLinus Torvalds ret = 0; 4391da177e4SLinus Torvalds bh = NULL; 4401da177e4SLinus Torvalds 441788257d6SArnd Bergmann if (needs_lock) 442788257d6SArnd Bergmann lock_ufs(sb); 4431da177e4SLinus Torvalds 444abf5d15fSEvgeniy Dushistov UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment); 4451da177e4SLinus Torvalds if (fragment > 4461da177e4SLinus Torvalds ((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb) 4471da177e4SLinus Torvalds << uspi->s_fpbshift)) 4481da177e4SLinus Torvalds goto abort_too_big; 4491da177e4SLinus Torvalds 4501da177e4SLinus Torvalds err = 0; 4511da177e4SLinus Torvalds ptr = fragment; 4521da177e4SLinus Torvalds 4531da177e4SLinus Torvalds /* 4541da177e4SLinus Torvalds * ok, these macros clean the logic up a bit and make 4551da177e4SLinus Torvalds * it much more readable: 4561da177e4SLinus Torvalds */ 4571da177e4SLinus Torvalds #define GET_INODE_DATABLOCK(x) \ 458a685e26fSEvgeniy Dushistov ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new,\ 459a685e26fSEvgeniy Dushistov bh_result->b_page) 4601da177e4SLinus Torvalds #define GET_INODE_PTR(x) \ 461a685e26fSEvgeniy Dushistov ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL,\ 462a685e26fSEvgeniy Dushistov bh_result->b_page) 4631da177e4SLinus Torvalds #define GET_INDIRECT_DATABLOCK(x) \ 464022a6dc5SEvgeniy Dushistov ufs_inode_getblock(inode, bh, x, fragment, \ 465d63b7090SEvgeniy Dushistov &err, &phys, &new, bh_result->b_page) 4661da177e4SLinus Torvalds #define GET_INDIRECT_PTR(x) \ 467022a6dc5SEvgeniy Dushistov ufs_inode_getblock(inode, bh, x, fragment, \ 468d63b7090SEvgeniy Dushistov &err, NULL, NULL, NULL) 4691da177e4SLinus Torvalds 4701da177e4SLinus Torvalds if (ptr < UFS_NDIR_FRAGMENT) { 4711da177e4SLinus Torvalds bh = GET_INODE_DATABLOCK(ptr); 4721da177e4SLinus Torvalds goto out; 4731da177e4SLinus Torvalds } 4741da177e4SLinus Torvalds ptr -= UFS_NDIR_FRAGMENT; 4751da177e4SLinus Torvalds if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) { 4761da177e4SLinus Torvalds bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift)); 4771da177e4SLinus Torvalds goto get_indirect; 4781da177e4SLinus Torvalds } 4791da177e4SLinus Torvalds ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift); 4801da177e4SLinus Torvalds if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) { 4811da177e4SLinus Torvalds bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift)); 4821da177e4SLinus Torvalds goto get_double; 4831da177e4SLinus Torvalds } 4841da177e4SLinus Torvalds ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift); 4851da177e4SLinus Torvalds bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift)); 4861da177e4SLinus Torvalds bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask); 4871da177e4SLinus Torvalds get_double: 4881da177e4SLinus Torvalds bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask); 4891da177e4SLinus Torvalds get_indirect: 4901da177e4SLinus Torvalds bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask); 4911da177e4SLinus Torvalds 4921da177e4SLinus Torvalds #undef GET_INODE_DATABLOCK 4931da177e4SLinus Torvalds #undef GET_INODE_PTR 4941da177e4SLinus Torvalds #undef GET_INDIRECT_DATABLOCK 4951da177e4SLinus Torvalds #undef GET_INDIRECT_PTR 4961da177e4SLinus Torvalds 4971da177e4SLinus Torvalds out: 4981da177e4SLinus Torvalds if (err) 4991da177e4SLinus Torvalds goto abort; 5001da177e4SLinus Torvalds if (new) 5011da177e4SLinus Torvalds set_buffer_new(bh_result); 5021da177e4SLinus Torvalds map_bh(bh_result, sb, phys); 5031da177e4SLinus Torvalds abort: 504788257d6SArnd Bergmann if (needs_lock) 505788257d6SArnd Bergmann unlock_ufs(sb); 506788257d6SArnd Bergmann 5071da177e4SLinus Torvalds return err; 5081da177e4SLinus Torvalds 5091da177e4SLinus Torvalds abort_too_big: 5101da177e4SLinus Torvalds ufs_warning(sb, "ufs_get_block", "block > big"); 5111da177e4SLinus Torvalds goto abort; 5121da177e4SLinus Torvalds } 5131da177e4SLinus Torvalds 5141da177e4SLinus Torvalds static int ufs_writepage(struct page *page, struct writeback_control *wbc) 5151da177e4SLinus Torvalds { 5161da177e4SLinus Torvalds return block_write_full_page(page,ufs_getfrag_block,wbc); 5171da177e4SLinus Torvalds } 51882b9d1d0SNick Piggin 5191da177e4SLinus Torvalds static int ufs_readpage(struct file *file, struct page *page) 5201da177e4SLinus Torvalds { 5211da177e4SLinus Torvalds return block_read_full_page(page,ufs_getfrag_block); 5221da177e4SLinus Torvalds } 52382b9d1d0SNick Piggin 524f4e420dcSChristoph Hellwig int ufs_prepare_chunk(struct page *page, loff_t pos, unsigned len) 5251da177e4SLinus Torvalds { 5266e1db88dSChristoph Hellwig return __block_write_begin(page, pos, len, ufs_getfrag_block); 5271da177e4SLinus Torvalds } 52882b9d1d0SNick Piggin 52983f6e371SMarco Stornelli static void ufs_write_failed(struct address_space *mapping, loff_t to) 53083f6e371SMarco Stornelli { 53183f6e371SMarco Stornelli struct inode *inode = mapping->host; 53283f6e371SMarco Stornelli 53383f6e371SMarco Stornelli if (to > inode->i_size) 5347caef267SKirill A. Shutemov truncate_pagecache(inode, inode->i_size); 53583f6e371SMarco Stornelli } 53683f6e371SMarco Stornelli 53782b9d1d0SNick Piggin static int ufs_write_begin(struct file *file, struct address_space *mapping, 53882b9d1d0SNick Piggin loff_t pos, unsigned len, unsigned flags, 53982b9d1d0SNick Piggin struct page **pagep, void **fsdata) 54082b9d1d0SNick Piggin { 541155130a4SChristoph Hellwig int ret; 542155130a4SChristoph Hellwig 543155130a4SChristoph Hellwig ret = block_write_begin(mapping, pos, len, flags, pagep, 544f4e420dcSChristoph Hellwig ufs_getfrag_block); 54583f6e371SMarco Stornelli if (unlikely(ret)) 54683f6e371SMarco Stornelli ufs_write_failed(mapping, pos + len); 547155130a4SChristoph Hellwig 548155130a4SChristoph Hellwig return ret; 54982b9d1d0SNick Piggin } 55082b9d1d0SNick Piggin 5511da177e4SLinus Torvalds static sector_t ufs_bmap(struct address_space *mapping, sector_t block) 5521da177e4SLinus Torvalds { 5531da177e4SLinus Torvalds return generic_block_bmap(mapping,block,ufs_getfrag_block); 5541da177e4SLinus Torvalds } 55582b9d1d0SNick Piggin 556f5e54d6eSChristoph Hellwig const struct address_space_operations ufs_aops = { 5571da177e4SLinus Torvalds .readpage = ufs_readpage, 5581da177e4SLinus Torvalds .writepage = ufs_writepage, 55982b9d1d0SNick Piggin .write_begin = ufs_write_begin, 56082b9d1d0SNick Piggin .write_end = generic_write_end, 5611da177e4SLinus Torvalds .bmap = ufs_bmap 5621da177e4SLinus Torvalds }; 5631da177e4SLinus Torvalds 564826843a3SEvgeniy Dushistov static void ufs_set_inode_ops(struct inode *inode) 565826843a3SEvgeniy Dushistov { 566826843a3SEvgeniy Dushistov if (S_ISREG(inode->i_mode)) { 567826843a3SEvgeniy Dushistov inode->i_op = &ufs_file_inode_operations; 568826843a3SEvgeniy Dushistov inode->i_fop = &ufs_file_operations; 569826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 570826843a3SEvgeniy Dushistov } else if (S_ISDIR(inode->i_mode)) { 571826843a3SEvgeniy Dushistov inode->i_op = &ufs_dir_inode_operations; 572826843a3SEvgeniy Dushistov inode->i_fop = &ufs_dir_operations; 573826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 574826843a3SEvgeniy Dushistov } else if (S_ISLNK(inode->i_mode)) { 5754b8061a6SAl Viro if (!inode->i_blocks) { 576826843a3SEvgeniy Dushistov inode->i_op = &ufs_fast_symlink_inode_operations; 5774b8061a6SAl Viro inode->i_link = (char *)UFS_I(inode)->i_u1.i_symlink; 5784b8061a6SAl Viro } else { 579311b9549SDmitry Monakhov inode->i_op = &ufs_symlink_inode_operations; 580826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 581826843a3SEvgeniy Dushistov } 582826843a3SEvgeniy Dushistov } else 583826843a3SEvgeniy Dushistov init_special_inode(inode, inode->i_mode, 584826843a3SEvgeniy Dushistov ufs_get_inode_dev(inode->i_sb, UFS_I(inode))); 585826843a3SEvgeniy Dushistov } 586826843a3SEvgeniy Dushistov 58707a0cfecSEvgeniy Dushistov static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode) 5881da177e4SLinus Torvalds { 5891da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 59005f225dcSEvgeniy Dushistov struct super_block *sb = inode->i_sb; 5916a9a06d9SAl Viro umode_t mode; 5921da177e4SLinus Torvalds 5931da177e4SLinus Torvalds /* 5941da177e4SLinus Torvalds * Copy data to the in-core inode. 5951da177e4SLinus Torvalds */ 5961da177e4SLinus Torvalds inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode); 597bfe86848SMiklos Szeredi set_nlink(inode, fs16_to_cpu(sb, ufs_inode->ui_nlink)); 59807a0cfecSEvgeniy Dushistov if (inode->i_nlink == 0) { 5991da177e4SLinus Torvalds ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 60007a0cfecSEvgeniy Dushistov return -1; 60107a0cfecSEvgeniy Dushistov } 6021da177e4SLinus Torvalds 6031da177e4SLinus Torvalds /* 6041da177e4SLinus Torvalds * Linux now has 32-bit uid and gid, so we can support EFT. 6051da177e4SLinus Torvalds */ 60672235465SEric W. Biederman i_uid_write(inode, ufs_get_inode_uid(sb, ufs_inode)); 60772235465SEric W. Biederman i_gid_write(inode, ufs_get_inode_gid(sb, ufs_inode)); 6081da177e4SLinus Torvalds 6091da177e4SLinus Torvalds inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); 6101da177e4SLinus Torvalds inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); 6111da177e4SLinus Torvalds inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); 6121da177e4SLinus Torvalds inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); 6131da177e4SLinus Torvalds inode->i_mtime.tv_nsec = 0; 6141da177e4SLinus Torvalds inode->i_atime.tv_nsec = 0; 6151da177e4SLinus Torvalds inode->i_ctime.tv_nsec = 0; 6161da177e4SLinus Torvalds inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); 6173313e292SEvgeniy Dushistov inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen); 6181da177e4SLinus Torvalds ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); 6191da177e4SLinus Torvalds ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 6201da177e4SLinus Torvalds ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 62105f225dcSEvgeniy Dushistov 6221da177e4SLinus Torvalds 6231da177e4SLinus Torvalds if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 624f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr, 625f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 626dd187a26SEvgeniy Dushistov } else { 627f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink, 628b12903f1SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink) - 1); 629b12903f1SDuane Griffin ufsi->i_u1.i_symlink[sizeof(ufs_inode->ui_u2.ui_symlink) - 1] = 0; 6301da177e4SLinus Torvalds } 63107a0cfecSEvgeniy Dushistov return 0; 63205f225dcSEvgeniy Dushistov } 6331da177e4SLinus Torvalds 63407a0cfecSEvgeniy Dushistov static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode) 63505f225dcSEvgeniy Dushistov { 63605f225dcSEvgeniy Dushistov struct ufs_inode_info *ufsi = UFS_I(inode); 63705f225dcSEvgeniy Dushistov struct super_block *sb = inode->i_sb; 6386a9a06d9SAl Viro umode_t mode; 6391da177e4SLinus Torvalds 640abf5d15fSEvgeniy Dushistov UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino); 6411da177e4SLinus Torvalds /* 6421da177e4SLinus Torvalds * Copy data to the in-core inode. 6431da177e4SLinus Torvalds */ 6441da177e4SLinus Torvalds inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode); 645bfe86848SMiklos Szeredi set_nlink(inode, fs16_to_cpu(sb, ufs2_inode->ui_nlink)); 64607a0cfecSEvgeniy Dushistov if (inode->i_nlink == 0) { 6471da177e4SLinus Torvalds ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 64807a0cfecSEvgeniy Dushistov return -1; 64907a0cfecSEvgeniy Dushistov } 6501da177e4SLinus Torvalds 6511da177e4SLinus Torvalds /* 6521da177e4SLinus Torvalds * Linux now has 32-bit uid and gid, so we can support EFT. 6531da177e4SLinus Torvalds */ 65472235465SEric W. Biederman i_uid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_uid)); 65572235465SEric W. Biederman i_gid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_gid)); 6561da177e4SLinus Torvalds 6571da177e4SLinus Torvalds inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size); 6582189850fSEvgeniy Dushistov inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime); 6592189850fSEvgeniy Dushistov inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime); 6602189850fSEvgeniy Dushistov inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime); 6612189850fSEvgeniy Dushistov inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec); 6622189850fSEvgeniy Dushistov inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec); 6632189850fSEvgeniy Dushistov inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec); 6641da177e4SLinus Torvalds inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks); 6653313e292SEvgeniy Dushistov inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen); 6661da177e4SLinus Torvalds ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags); 6671da177e4SLinus Torvalds /* 6681da177e4SLinus Torvalds ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 6691da177e4SLinus Torvalds ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 6701da177e4SLinus Torvalds */ 6711da177e4SLinus Torvalds 6721da177e4SLinus Torvalds if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 673f33219b7SDuane Griffin memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr, 674f33219b7SDuane Griffin sizeof(ufs2_inode->ui_u2.ui_addr)); 67505f225dcSEvgeniy Dushistov } else { 676f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink, 677b12903f1SDuane Griffin sizeof(ufs2_inode->ui_u2.ui_symlink) - 1); 678b12903f1SDuane Griffin ufsi->i_u1.i_symlink[sizeof(ufs2_inode->ui_u2.ui_symlink) - 1] = 0; 6791da177e4SLinus Torvalds } 68007a0cfecSEvgeniy Dushistov return 0; 68105f225dcSEvgeniy Dushistov } 68205f225dcSEvgeniy Dushistov 683b55c460dSDavid Howells struct inode *ufs_iget(struct super_block *sb, unsigned long ino) 68405f225dcSEvgeniy Dushistov { 685b55c460dSDavid Howells struct ufs_inode_info *ufsi; 686b55c460dSDavid Howells struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 68705f225dcSEvgeniy Dushistov struct buffer_head * bh; 688b55c460dSDavid Howells struct inode *inode; 68907a0cfecSEvgeniy Dushistov int err; 69005f225dcSEvgeniy Dushistov 691b55c460dSDavid Howells UFSD("ENTER, ino %lu\n", ino); 69205f225dcSEvgeniy Dushistov 693b55c460dSDavid Howells if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) { 69405f225dcSEvgeniy Dushistov ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n", 695b55c460dSDavid Howells ino); 696b55c460dSDavid Howells return ERR_PTR(-EIO); 69705f225dcSEvgeniy Dushistov } 69805f225dcSEvgeniy Dushistov 699b55c460dSDavid Howells inode = iget_locked(sb, ino); 700b55c460dSDavid Howells if (!inode) 701b55c460dSDavid Howells return ERR_PTR(-ENOMEM); 702b55c460dSDavid Howells if (!(inode->i_state & I_NEW)) 703b55c460dSDavid Howells return inode; 704b55c460dSDavid Howells 705b55c460dSDavid Howells ufsi = UFS_I(inode); 706b55c460dSDavid Howells 70705f225dcSEvgeniy Dushistov bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino)); 70805f225dcSEvgeniy Dushistov if (!bh) { 70905f225dcSEvgeniy Dushistov ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n", 71005f225dcSEvgeniy Dushistov inode->i_ino); 71105f225dcSEvgeniy Dushistov goto bad_inode; 71205f225dcSEvgeniy Dushistov } 71305f225dcSEvgeniy Dushistov if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { 71405f225dcSEvgeniy Dushistov struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 71505f225dcSEvgeniy Dushistov 71607a0cfecSEvgeniy Dushistov err = ufs2_read_inode(inode, 71705f225dcSEvgeniy Dushistov ufs2_inode + ufs_inotofsbo(inode->i_ino)); 71805f225dcSEvgeniy Dushistov } else { 71905f225dcSEvgeniy Dushistov struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data; 72005f225dcSEvgeniy Dushistov 72107a0cfecSEvgeniy Dushistov err = ufs1_read_inode(inode, 72207a0cfecSEvgeniy Dushistov ufs_inode + ufs_inotofsbo(inode->i_ino)); 72305f225dcSEvgeniy Dushistov } 72405f225dcSEvgeniy Dushistov 72507a0cfecSEvgeniy Dushistov if (err) 72607a0cfecSEvgeniy Dushistov goto bad_inode; 72705f225dcSEvgeniy Dushistov inode->i_version++; 72805f225dcSEvgeniy Dushistov ufsi->i_lastfrag = 72905f225dcSEvgeniy Dushistov (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; 73005f225dcSEvgeniy Dushistov ufsi->i_dir_start_lookup = 0; 7311da177e4SLinus Torvalds ufsi->i_osync = 0; 7321da177e4SLinus Torvalds 733826843a3SEvgeniy Dushistov ufs_set_inode_ops(inode); 7341da177e4SLinus Torvalds 7351da177e4SLinus Torvalds brelse(bh); 7361da177e4SLinus Torvalds 737abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 738b55c460dSDavid Howells unlock_new_inode(inode); 739b55c460dSDavid Howells return inode; 74005f225dcSEvgeniy Dushistov 74105f225dcSEvgeniy Dushistov bad_inode: 742b55c460dSDavid Howells iget_failed(inode); 743b55c460dSDavid Howells return ERR_PTR(-EIO); 7441da177e4SLinus Torvalds } 7451da177e4SLinus Torvalds 7463313e292SEvgeniy Dushistov static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode) 7471da177e4SLinus Torvalds { 7483313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 7491da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 7501da177e4SLinus Torvalds 7511da177e4SLinus Torvalds ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 7521da177e4SLinus Torvalds ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 7531da177e4SLinus Torvalds 75472235465SEric W. Biederman ufs_set_inode_uid(sb, ufs_inode, i_uid_read(inode)); 75572235465SEric W. Biederman ufs_set_inode_gid(sb, ufs_inode, i_gid_read(inode)); 7561da177e4SLinus Torvalds 7571da177e4SLinus Torvalds ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 7581da177e4SLinus Torvalds ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec); 7591da177e4SLinus Torvalds ufs_inode->ui_atime.tv_usec = 0; 7601da177e4SLinus Torvalds ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec); 7611da177e4SLinus Torvalds ufs_inode->ui_ctime.tv_usec = 0; 7621da177e4SLinus Torvalds ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec); 7631da177e4SLinus Torvalds ufs_inode->ui_mtime.tv_usec = 0; 7641da177e4SLinus Torvalds ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks); 7651da177e4SLinus Torvalds ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 7663313e292SEvgeniy Dushistov ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); 7671da177e4SLinus Torvalds 7683313e292SEvgeniy Dushistov if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) { 7691da177e4SLinus Torvalds ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow); 7701da177e4SLinus Torvalds ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag); 7711da177e4SLinus Torvalds } 7721da177e4SLinus Torvalds 7731da177e4SLinus Torvalds if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 7741da177e4SLinus Torvalds /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 7751da177e4SLinus Torvalds ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0]; 7761da177e4SLinus Torvalds } else if (inode->i_blocks) { 777f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data, 778f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 7791da177e4SLinus Torvalds } 7801da177e4SLinus Torvalds else { 781f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, 782f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink)); 7831da177e4SLinus Torvalds } 7841da177e4SLinus Torvalds 7851da177e4SLinus Torvalds if (!inode->i_nlink) 7861da177e4SLinus Torvalds memset (ufs_inode, 0, sizeof(struct ufs_inode)); 7873313e292SEvgeniy Dushistov } 7883313e292SEvgeniy Dushistov 7893313e292SEvgeniy Dushistov static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode) 7903313e292SEvgeniy Dushistov { 7913313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 7923313e292SEvgeniy Dushistov struct ufs_inode_info *ufsi = UFS_I(inode); 7933313e292SEvgeniy Dushistov 7943313e292SEvgeniy Dushistov UFSD("ENTER\n"); 7953313e292SEvgeniy Dushistov ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 7963313e292SEvgeniy Dushistov ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 7973313e292SEvgeniy Dushistov 79872235465SEric W. Biederman ufs_inode->ui_uid = cpu_to_fs32(sb, i_uid_read(inode)); 79972235465SEric W. Biederman ufs_inode->ui_gid = cpu_to_fs32(sb, i_gid_read(inode)); 8003313e292SEvgeniy Dushistov 8013313e292SEvgeniy Dushistov ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 8022189850fSEvgeniy Dushistov ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec); 8032189850fSEvgeniy Dushistov ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec); 8042189850fSEvgeniy Dushistov ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec); 8052189850fSEvgeniy Dushistov ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec); 8062189850fSEvgeniy Dushistov ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec); 8072189850fSEvgeniy Dushistov ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec); 8083313e292SEvgeniy Dushistov 8093313e292SEvgeniy Dushistov ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks); 8103313e292SEvgeniy Dushistov ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 8113313e292SEvgeniy Dushistov ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); 8123313e292SEvgeniy Dushistov 8133313e292SEvgeniy Dushistov if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 8143313e292SEvgeniy Dushistov /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 8153313e292SEvgeniy Dushistov ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0]; 8163313e292SEvgeniy Dushistov } else if (inode->i_blocks) { 817f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data, 818f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 8193313e292SEvgeniy Dushistov } else { 820f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, 821f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink)); 8223313e292SEvgeniy Dushistov } 8233313e292SEvgeniy Dushistov 8243313e292SEvgeniy Dushistov if (!inode->i_nlink) 8253313e292SEvgeniy Dushistov memset (ufs_inode, 0, sizeof(struct ufs2_inode)); 8263313e292SEvgeniy Dushistov UFSD("EXIT\n"); 8273313e292SEvgeniy Dushistov } 8283313e292SEvgeniy Dushistov 8293313e292SEvgeniy Dushistov static int ufs_update_inode(struct inode * inode, int do_sync) 8303313e292SEvgeniy Dushistov { 8313313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 8323313e292SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 8333313e292SEvgeniy Dushistov struct buffer_head * bh; 8343313e292SEvgeniy Dushistov 8353313e292SEvgeniy Dushistov UFSD("ENTER, ino %lu\n", inode->i_ino); 8363313e292SEvgeniy Dushistov 8373313e292SEvgeniy Dushistov if (inode->i_ino < UFS_ROOTINO || 8383313e292SEvgeniy Dushistov inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { 8393313e292SEvgeniy Dushistov ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); 8403313e292SEvgeniy Dushistov return -1; 8413313e292SEvgeniy Dushistov } 8423313e292SEvgeniy Dushistov 8433313e292SEvgeniy Dushistov bh = sb_bread(sb, ufs_inotofsba(inode->i_ino)); 8443313e292SEvgeniy Dushistov if (!bh) { 8453313e292SEvgeniy Dushistov ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); 8463313e292SEvgeniy Dushistov return -1; 8473313e292SEvgeniy Dushistov } 8483313e292SEvgeniy Dushistov if (uspi->fs_magic == UFS2_MAGIC) { 8493313e292SEvgeniy Dushistov struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 8503313e292SEvgeniy Dushistov 8513313e292SEvgeniy Dushistov ufs2_update_inode(inode, 8523313e292SEvgeniy Dushistov ufs2_inode + ufs_inotofsbo(inode->i_ino)); 8533313e292SEvgeniy Dushistov } else { 8543313e292SEvgeniy Dushistov struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data; 8553313e292SEvgeniy Dushistov 8563313e292SEvgeniy Dushistov ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino)); 8573313e292SEvgeniy Dushistov } 8581da177e4SLinus Torvalds 8591da177e4SLinus Torvalds mark_buffer_dirty(bh); 8601da177e4SLinus Torvalds if (do_sync) 8611da177e4SLinus Torvalds sync_dirty_buffer(bh); 8621da177e4SLinus Torvalds brelse (bh); 8631da177e4SLinus Torvalds 864abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 8651da177e4SLinus Torvalds return 0; 8661da177e4SLinus Torvalds } 8671da177e4SLinus Torvalds 868a9185b41SChristoph Hellwig int ufs_write_inode(struct inode *inode, struct writeback_control *wbc) 8691da177e4SLinus Torvalds { 870f3e0f3daSAl Viro return ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL); 8711da177e4SLinus Torvalds } 8721da177e4SLinus Torvalds 8731da177e4SLinus Torvalds int ufs_sync_inode (struct inode *inode) 8741da177e4SLinus Torvalds { 8751da177e4SLinus Torvalds return ufs_update_inode (inode, 1); 8761da177e4SLinus Torvalds } 8771da177e4SLinus Torvalds 87858e8268cSAl Viro void ufs_evict_inode(struct inode * inode) 8791da177e4SLinus Torvalds { 88058e8268cSAl Viro int want_delete = 0; 88158e8268cSAl Viro 88258e8268cSAl Viro if (!inode->i_nlink && !is_bad_inode(inode)) 88358e8268cSAl Viro want_delete = 1; 88410e5dce0SEvgeniy Dushistov 88591b0abe3SJohannes Weiner truncate_inode_pages_final(&inode->i_data); 88658e8268cSAl Viro if (want_delete) { 88758e8268cSAl Viro loff_t old_i_size; 8881da177e4SLinus Torvalds /*UFS_I(inode)->i_dtime = CURRENT_TIME;*/ 8891da177e4SLinus Torvalds mark_inode_dirty(inode); 8901da177e4SLinus Torvalds ufs_update_inode(inode, IS_SYNC(inode)); 89110e5dce0SEvgeniy Dushistov old_i_size = inode->i_size; 8921da177e4SLinus Torvalds inode->i_size = 0; 89310e5dce0SEvgeniy Dushistov if (inode->i_blocks && ufs_truncate(inode, old_i_size)) 8949746077aSHarvey Harrison ufs_warning(inode->i_sb, __func__, "ufs_truncate failed\n"); 89558e8268cSAl Viro } 89658e8268cSAl Viro 89758e8268cSAl Viro invalidate_inode_buffers(inode); 898dbd5768fSJan Kara clear_inode(inode); 89958e8268cSAl Viro 900f3e0f3daSAl Viro if (want_delete) 9011da177e4SLinus Torvalds ufs_free_inode(inode); 9021da177e4SLinus Torvalds } 903