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 444e3911f3SAl Viro static int ufs_block_to_path(struct inode *inode, sector_t i_block, unsigned offsets[4]) 451da177e4SLinus Torvalds { 461da177e4SLinus Torvalds struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi; 471da177e4SLinus Torvalds int ptrs = uspi->s_apb; 481da177e4SLinus Torvalds int ptrs_bits = uspi->s_apbshift; 491da177e4SLinus Torvalds const long direct_blocks = UFS_NDADDR, 501da177e4SLinus Torvalds indirect_blocks = ptrs, 511da177e4SLinus Torvalds double_blocks = (1 << (ptrs_bits * 2)); 521da177e4SLinus Torvalds int n = 0; 531da177e4SLinus Torvalds 541da177e4SLinus Torvalds 55abf5d15fSEvgeniy Dushistov UFSD("ptrs=uspi->s_apb = %d,double_blocks=%ld \n",ptrs,double_blocks); 5637044c86SRoel Kluin if (i_block < direct_blocks) { 571da177e4SLinus Torvalds offsets[n++] = i_block; 581da177e4SLinus Torvalds } else if ((i_block -= direct_blocks) < indirect_blocks) { 591da177e4SLinus Torvalds offsets[n++] = UFS_IND_BLOCK; 601da177e4SLinus Torvalds offsets[n++] = i_block; 611da177e4SLinus Torvalds } else if ((i_block -= indirect_blocks) < double_blocks) { 621da177e4SLinus Torvalds offsets[n++] = UFS_DIND_BLOCK; 631da177e4SLinus Torvalds offsets[n++] = i_block >> ptrs_bits; 641da177e4SLinus Torvalds offsets[n++] = i_block & (ptrs - 1); 651da177e4SLinus Torvalds } else if (((i_block -= double_blocks) >> (ptrs_bits * 2)) < ptrs) { 661da177e4SLinus Torvalds offsets[n++] = UFS_TIND_BLOCK; 671da177e4SLinus Torvalds offsets[n++] = i_block >> (ptrs_bits * 2); 681da177e4SLinus Torvalds offsets[n++] = (i_block >> ptrs_bits) & (ptrs - 1); 691da177e4SLinus Torvalds offsets[n++] = i_block & (ptrs - 1); 701da177e4SLinus Torvalds } else { 711da177e4SLinus Torvalds ufs_warning(inode->i_sb, "ufs_block_to_path", "block > big"); 721da177e4SLinus Torvalds } 731da177e4SLinus Torvalds return n; 741da177e4SLinus Torvalds } 751da177e4SLinus Torvalds 76724bb09fSAl Viro typedef struct { 77724bb09fSAl Viro void *p; 78724bb09fSAl Viro union { 79724bb09fSAl Viro __fs32 key32; 80724bb09fSAl Viro __fs64 key64; 81724bb09fSAl Viro }; 82724bb09fSAl Viro struct buffer_head *bh; 83724bb09fSAl Viro } Indirect; 84724bb09fSAl Viro 85724bb09fSAl Viro static inline int grow_chain32(struct ufs_inode_info *ufsi, 86724bb09fSAl Viro struct buffer_head *bh, __fs32 *v, 87724bb09fSAl Viro Indirect *from, Indirect *to) 88724bb09fSAl Viro { 89724bb09fSAl Viro Indirect *p; 90724bb09fSAl Viro unsigned seq; 91724bb09fSAl Viro to->bh = bh; 92724bb09fSAl Viro do { 93724bb09fSAl Viro seq = read_seqbegin(&ufsi->meta_lock); 94724bb09fSAl Viro to->key32 = *(__fs32 *)(to->p = v); 95724bb09fSAl Viro for (p = from; p <= to && p->key32 == *(__fs32 *)p->p; p++) 96724bb09fSAl Viro ; 97724bb09fSAl Viro } while (read_seqretry(&ufsi->meta_lock, seq)); 98724bb09fSAl Viro return (p > to); 99724bb09fSAl Viro } 100724bb09fSAl Viro 101724bb09fSAl Viro static inline int grow_chain64(struct ufs_inode_info *ufsi, 102724bb09fSAl Viro struct buffer_head *bh, __fs64 *v, 103724bb09fSAl Viro Indirect *from, Indirect *to) 104724bb09fSAl Viro { 105724bb09fSAl Viro Indirect *p; 106724bb09fSAl Viro unsigned seq; 107724bb09fSAl Viro to->bh = bh; 108724bb09fSAl Viro do { 109724bb09fSAl Viro seq = read_seqbegin(&ufsi->meta_lock); 110724bb09fSAl Viro to->key64 = *(__fs64 *)(to->p = v); 111724bb09fSAl Viro for (p = from; p <= to && p->key64 == *(__fs64 *)p->p; p++) 112724bb09fSAl Viro ; 113724bb09fSAl Viro } while (read_seqretry(&ufsi->meta_lock, seq)); 114724bb09fSAl Viro return (p > to); 115724bb09fSAl Viro } 116724bb09fSAl Viro 1171da177e4SLinus Torvalds /* 1181da177e4SLinus Torvalds * Returns the location of the fragment from 11925985edcSLucas De Marchi * the beginning of the filesystem. 1201da177e4SLinus Torvalds */ 1211da177e4SLinus Torvalds 122724bb09fSAl Viro static u64 ufs_frag_map(struct inode *inode, sector_t frag) 1231da177e4SLinus Torvalds { 1241da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 1251da177e4SLinus Torvalds struct super_block *sb = inode->i_sb; 1261da177e4SLinus Torvalds struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 1271da177e4SLinus Torvalds u64 mask = (u64) uspi->s_apbmask>>uspi->s_fpbshift; 1281da177e4SLinus Torvalds int shift = uspi->s_apbshift-uspi->s_fpbshift; 129010d331fSAl Viro unsigned offsets[4], *p; 130724bb09fSAl Viro Indirect chain[4], *q = chain; 1311da177e4SLinus Torvalds int depth = ufs_block_to_path(inode, frag >> uspi->s_fpbshift, offsets); 1321da177e4SLinus Torvalds unsigned flags = UFS_SB(sb)->s_flags; 133724bb09fSAl Viro u64 res = 0; 1341da177e4SLinus Torvalds 135abf5d15fSEvgeniy Dushistov UFSD(": frag = %llu depth = %d\n", (unsigned long long)frag, depth); 1367256d819SAndrew Morton UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n", 1377256d819SAndrew Morton uspi->s_fpbshift, uspi->s_apbmask, 1387256d819SAndrew Morton (unsigned long long)mask); 1391da177e4SLinus Torvalds 1401da177e4SLinus Torvalds if (depth == 0) 141724bb09fSAl Viro goto no_block; 1421da177e4SLinus Torvalds 143724bb09fSAl Viro again: 1441da177e4SLinus Torvalds p = offsets; 1451da177e4SLinus Torvalds 1461da177e4SLinus Torvalds if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 1471da177e4SLinus Torvalds goto ufs2; 1481da177e4SLinus Torvalds 149724bb09fSAl Viro if (!grow_chain32(ufsi, NULL, &ufsi->i_u1.i_data[*p++], chain, q)) 150724bb09fSAl Viro goto changed; 151724bb09fSAl Viro if (!q->key32) 152724bb09fSAl Viro goto no_block; 1531da177e4SLinus Torvalds while (--depth) { 154724bb09fSAl Viro __fs32 *ptr; 1551da177e4SLinus Torvalds struct buffer_head *bh; 1564e3911f3SAl Viro unsigned n = *p++; 1571da177e4SLinus Torvalds 158724bb09fSAl Viro bh = sb_bread(sb, uspi->s_sbbase + 159724bb09fSAl Viro fs32_to_cpu(sb, q->key32) + (n>>shift)); 1601da177e4SLinus Torvalds if (!bh) 161724bb09fSAl Viro goto no_block; 162724bb09fSAl Viro ptr = (__fs32 *)bh->b_data + (n & mask); 163724bb09fSAl Viro if (!grow_chain32(ufsi, bh, ptr, chain, ++q)) 164724bb09fSAl Viro goto changed; 165724bb09fSAl Viro if (!q->key32) 166724bb09fSAl Viro goto no_block; 1671da177e4SLinus Torvalds } 168724bb09fSAl Viro res = fs32_to_cpu(sb, q->key32); 169724bb09fSAl Viro goto found; 170724bb09fSAl Viro 1711da177e4SLinus Torvalds ufs2: 172724bb09fSAl Viro if (!grow_chain64(ufsi, NULL, &ufsi->i_u1.u2_i_data[*p++], chain, q)) 173724bb09fSAl Viro goto changed; 174724bb09fSAl Viro if (!q->key64) 175724bb09fSAl Viro goto no_block; 1761da177e4SLinus Torvalds 1771da177e4SLinus Torvalds while (--depth) { 178724bb09fSAl Viro __fs64 *ptr; 1791da177e4SLinus Torvalds struct buffer_head *bh; 1804e3911f3SAl Viro unsigned n = *p++; 1811da177e4SLinus Torvalds 182724bb09fSAl Viro bh = sb_bread(sb, uspi->s_sbbase + 183724bb09fSAl Viro fs64_to_cpu(sb, q->key64) + (n>>shift)); 1841da177e4SLinus Torvalds if (!bh) 185724bb09fSAl Viro goto no_block; 186724bb09fSAl Viro ptr = (__fs64 *)bh->b_data + (n & mask); 187724bb09fSAl Viro if (!grow_chain64(ufsi, bh, ptr, chain, ++q)) 188724bb09fSAl Viro goto changed; 189724bb09fSAl Viro if (!q->key64) 190724bb09fSAl Viro goto no_block; 1911da177e4SLinus Torvalds } 192724bb09fSAl Viro res = fs64_to_cpu(sb, q->key64); 193724bb09fSAl Viro found: 194724bb09fSAl Viro res += uspi->s_sbbase + (frag & uspi->s_fpbmask); 195724bb09fSAl Viro no_block: 196724bb09fSAl Viro while (q > chain) { 197724bb09fSAl Viro brelse(q->bh); 198724bb09fSAl Viro q--; 199724bb09fSAl Viro } 200724bb09fSAl Viro return res; 2011da177e4SLinus Torvalds 202724bb09fSAl Viro changed: 203724bb09fSAl Viro while (q > chain) { 204724bb09fSAl Viro brelse(q->bh); 205724bb09fSAl Viro q--; 206724bb09fSAl Viro } 207724bb09fSAl Viro goto again; 2081da177e4SLinus Torvalds } 2091da177e4SLinus Torvalds 210022a6dc5SEvgeniy Dushistov /** 211022a6dc5SEvgeniy Dushistov * ufs_inode_getfrag() - allocate new fragment(s) 212edc023caSFabian Frederick * @inode: pointer to inode 213edc023caSFabian Frederick * @fragment: number of `fragment' which hold pointer 214022a6dc5SEvgeniy Dushistov * to new allocated fragment(s) 215edc023caSFabian Frederick * @new_fragment: number of new allocated fragment(s) 216edc023caSFabian Frederick * @required: how many fragment(s) we require 217edc023caSFabian Frederick * @err: we set it if something wrong 218edc023caSFabian Frederick * @phys: pointer to where we save physical number of new allocated fragments, 219022a6dc5SEvgeniy Dushistov * NULL if we allocate not data(indirect blocks for example). 220edc023caSFabian Frederick * @new: we set it if we allocate new block 221edc023caSFabian Frederick * @locked_page: for ufs_new_fragments() 222022a6dc5SEvgeniy Dushistov */ 223022a6dc5SEvgeniy Dushistov static struct buffer_head * 22454fb996aSEvgeniy Dushistov ufs_inode_getfrag(struct inode *inode, u64 fragment, 225022a6dc5SEvgeniy Dushistov sector_t new_fragment, unsigned int required, int *err, 2266ef4d6bfSEvgeniy Dushistov long *phys, int *new, struct page *locked_page) 2271da177e4SLinus Torvalds { 2281da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 229022a6dc5SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 230022a6dc5SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 2311da177e4SLinus Torvalds struct buffer_head * result; 23254fb996aSEvgeniy Dushistov unsigned blockoff, lastblockoff; 23354fb996aSEvgeniy Dushistov u64 tmp, goal, lastfrag, block, lastblock; 23454fb996aSEvgeniy Dushistov void *p, *p2; 2351da177e4SLinus Torvalds 23654fb996aSEvgeniy Dushistov UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, required %u, " 23754fb996aSEvgeniy Dushistov "metadata %d\n", inode->i_ino, (unsigned long long)fragment, 238022a6dc5SEvgeniy Dushistov (unsigned long long)new_fragment, required, !phys); 2391da177e4SLinus Torvalds 2401da177e4SLinus Torvalds /* TODO : to be done for write support 2411da177e4SLinus Torvalds if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 2421da177e4SLinus Torvalds goto ufs2; 2431da177e4SLinus Torvalds */ 2441da177e4SLinus Torvalds 2451da177e4SLinus Torvalds block = ufs_fragstoblks (fragment); 2461da177e4SLinus Torvalds blockoff = ufs_fragnum (fragment); 24754fb996aSEvgeniy Dushistov p = ufs_get_direct_data_ptr(uspi, ufsi, block); 24854fb996aSEvgeniy Dushistov 2491da177e4SLinus Torvalds goal = 0; 2501da177e4SLinus Torvalds 2511da177e4SLinus Torvalds repeat: 25254fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, p); 25354fb996aSEvgeniy Dushistov 2541da177e4SLinus Torvalds lastfrag = ufsi->i_lastfrag; 2551da177e4SLinus Torvalds if (tmp && fragment < lastfrag) { 256022a6dc5SEvgeniy Dushistov if (!phys) { 2571da177e4SLinus Torvalds result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 25854fb996aSEvgeniy Dushistov if (tmp == ufs_data_ptr_to_cpu(sb, p)) { 25954fb996aSEvgeniy Dushistov UFSD("EXIT, result %llu\n", 26054fb996aSEvgeniy Dushistov (unsigned long long)tmp + blockoff); 2611da177e4SLinus Torvalds return result; 2621da177e4SLinus Torvalds } 2631da177e4SLinus Torvalds brelse (result); 2641da177e4SLinus Torvalds goto repeat; 2651da177e4SLinus Torvalds } else { 2664b25a37eSEvgeniy Dushistov *phys = uspi->s_sbbase + tmp + blockoff; 2671da177e4SLinus Torvalds return NULL; 2681da177e4SLinus Torvalds } 2691da177e4SLinus Torvalds } 2701da177e4SLinus Torvalds 2711da177e4SLinus Torvalds lastblock = ufs_fragstoblks (lastfrag); 2721da177e4SLinus Torvalds lastblockoff = ufs_fragnum (lastfrag); 2731da177e4SLinus Torvalds /* 2741da177e4SLinus Torvalds * We will extend file into new block beyond last allocated block 2751da177e4SLinus Torvalds */ 2761da177e4SLinus Torvalds if (lastblock < block) { 2771da177e4SLinus Torvalds /* 2781da177e4SLinus Torvalds * We must reallocate last allocated block 2791da177e4SLinus Torvalds */ 2801da177e4SLinus Torvalds if (lastblockoff) { 28154fb996aSEvgeniy Dushistov p2 = ufs_get_direct_data_ptr(uspi, ufsi, lastblock); 2821da177e4SLinus Torvalds tmp = ufs_new_fragments(inode, p2, lastfrag, 28354fb996aSEvgeniy Dushistov ufs_data_ptr_to_cpu(sb, p2), 28454fb996aSEvgeniy Dushistov uspi->s_fpb - lastblockoff, 2856ef4d6bfSEvgeniy Dushistov err, locked_page); 2861da177e4SLinus Torvalds if (!tmp) { 2871da177e4SLinus Torvalds if (lastfrag != ufsi->i_lastfrag) 2881da177e4SLinus Torvalds goto repeat; 2891da177e4SLinus Torvalds else 2901da177e4SLinus Torvalds return NULL; 2911da177e4SLinus Torvalds } 2921da177e4SLinus Torvalds lastfrag = ufsi->i_lastfrag; 2931da177e4SLinus Torvalds 2941da177e4SLinus Torvalds } 29554fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, 29654fb996aSEvgeniy Dushistov ufs_get_direct_data_ptr(uspi, ufsi, 29754fb996aSEvgeniy Dushistov lastblock)); 298c37336b0SEvgeniy Dushistov if (tmp) 299c37336b0SEvgeniy Dushistov goal = tmp + uspi->s_fpb; 3001da177e4SLinus Torvalds tmp = ufs_new_fragments (inode, p, fragment - blockoff, 3016ef4d6bfSEvgeniy Dushistov goal, required + blockoff, 302a685e26fSEvgeniy Dushistov err, 303a685e26fSEvgeniy Dushistov phys != NULL ? locked_page : NULL); 30454fb996aSEvgeniy Dushistov } else if (lastblock == block) { 3051da177e4SLinus Torvalds /* 3061da177e4SLinus Torvalds * We will extend last allocated block 3071da177e4SLinus Torvalds */ 30854fb996aSEvgeniy Dushistov tmp = ufs_new_fragments(inode, p, fragment - 30954fb996aSEvgeniy Dushistov (blockoff - lastblockoff), 31054fb996aSEvgeniy Dushistov ufs_data_ptr_to_cpu(sb, p), 31154fb996aSEvgeniy Dushistov required + (blockoff - lastblockoff), 312a685e26fSEvgeniy Dushistov err, phys != NULL ? locked_page : NULL); 313c37336b0SEvgeniy Dushistov } else /* (lastblock > block) */ { 3141da177e4SLinus Torvalds /* 3151da177e4SLinus Torvalds * We will allocate new block before last allocated block 3161da177e4SLinus Torvalds */ 317c37336b0SEvgeniy Dushistov if (block) { 31854fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, 31954fb996aSEvgeniy Dushistov ufs_get_direct_data_ptr(uspi, ufsi, block - 1)); 320c37336b0SEvgeniy Dushistov if (tmp) 3211da177e4SLinus Torvalds goal = tmp + uspi->s_fpb; 322c37336b0SEvgeniy Dushistov } 3231da177e4SLinus Torvalds tmp = ufs_new_fragments(inode, p, fragment - blockoff, 324a685e26fSEvgeniy Dushistov goal, uspi->s_fpb, err, 325a685e26fSEvgeniy Dushistov phys != NULL ? locked_page : NULL); 3261da177e4SLinus Torvalds } 3271da177e4SLinus Torvalds if (!tmp) { 32854fb996aSEvgeniy Dushistov if ((!blockoff && ufs_data_ptr_to_cpu(sb, p)) || 3291da177e4SLinus Torvalds (blockoff && lastfrag != ufsi->i_lastfrag)) 3301da177e4SLinus Torvalds goto repeat; 3311da177e4SLinus Torvalds *err = -ENOSPC; 3321da177e4SLinus Torvalds return NULL; 3331da177e4SLinus Torvalds } 3341da177e4SLinus Torvalds 335022a6dc5SEvgeniy Dushistov if (!phys) { 3364b25a37eSEvgeniy Dushistov result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 3371da177e4SLinus Torvalds } else { 3384b25a37eSEvgeniy Dushistov *phys = uspi->s_sbbase + tmp + blockoff; 3391da177e4SLinus Torvalds result = NULL; 3401da177e4SLinus Torvalds *err = 0; 3411da177e4SLinus Torvalds *new = 1; 3421da177e4SLinus Torvalds } 3431da177e4SLinus Torvalds 3441da177e4SLinus Torvalds inode->i_ctime = CURRENT_TIME_SEC; 3451da177e4SLinus Torvalds if (IS_SYNC(inode)) 3461da177e4SLinus Torvalds ufs_sync_inode (inode); 3471da177e4SLinus Torvalds mark_inode_dirty(inode); 34854fb996aSEvgeniy Dushistov UFSD("EXIT, result %llu\n", (unsigned long long)tmp + blockoff); 3491da177e4SLinus Torvalds return result; 3501da177e4SLinus Torvalds 3511da177e4SLinus Torvalds /* This part : To be implemented .... 3521da177e4SLinus Torvalds Required only for writing, not required for READ-ONLY. 3531da177e4SLinus Torvalds ufs2: 3541da177e4SLinus Torvalds 3551da177e4SLinus Torvalds u2_block = ufs_fragstoblks(fragment); 3561da177e4SLinus Torvalds u2_blockoff = ufs_fragnum(fragment); 3571da177e4SLinus Torvalds p = ufsi->i_u1.u2_i_data + block; 3581da177e4SLinus Torvalds goal = 0; 3591da177e4SLinus Torvalds 3601da177e4SLinus Torvalds repeat2: 3611da177e4SLinus Torvalds tmp = fs32_to_cpu(sb, *p); 3621da177e4SLinus Torvalds lastfrag = ufsi->i_lastfrag; 3631da177e4SLinus Torvalds 3641da177e4SLinus Torvalds */ 3651da177e4SLinus Torvalds } 3661da177e4SLinus Torvalds 367022a6dc5SEvgeniy Dushistov /** 368022a6dc5SEvgeniy Dushistov * ufs_inode_getblock() - allocate new block 369edc023caSFabian Frederick * @inode: pointer to inode 370edc023caSFabian Frederick * @bh: pointer to block which hold "pointer" to new allocated block 371edc023caSFabian Frederick * @fragment: number of `fragment' which hold pointer 372022a6dc5SEvgeniy Dushistov * to new allocated block 373edc023caSFabian Frederick * @new_fragment: number of new allocated fragment 374022a6dc5SEvgeniy Dushistov * (block will hold this fragment and also uspi->s_fpb-1) 375edc023caSFabian Frederick * @err: see ufs_inode_getfrag() 376edc023caSFabian Frederick * @phys: see ufs_inode_getfrag() 377edc023caSFabian Frederick * @new: see ufs_inode_getfrag() 378edc023caSFabian Frederick * @locked_page: see ufs_inode_getfrag() 379022a6dc5SEvgeniy Dushistov */ 380022a6dc5SEvgeniy Dushistov static struct buffer_head * 381022a6dc5SEvgeniy Dushistov ufs_inode_getblock(struct inode *inode, struct buffer_head *bh, 38254fb996aSEvgeniy Dushistov u64 fragment, sector_t new_fragment, int *err, 3836ef4d6bfSEvgeniy Dushistov long *phys, int *new, struct page *locked_page) 3841da177e4SLinus Torvalds { 385022a6dc5SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 386022a6dc5SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 3871da177e4SLinus Torvalds struct buffer_head * result; 38854fb996aSEvgeniy Dushistov unsigned blockoff; 38954fb996aSEvgeniy Dushistov u64 tmp, goal, block; 39054fb996aSEvgeniy Dushistov void *p; 3911da177e4SLinus Torvalds 3921da177e4SLinus Torvalds block = ufs_fragstoblks (fragment); 3931da177e4SLinus Torvalds blockoff = ufs_fragnum (fragment); 3941da177e4SLinus Torvalds 39554fb996aSEvgeniy Dushistov UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, metadata %d\n", 39654fb996aSEvgeniy Dushistov inode->i_ino, (unsigned long long)fragment, 39754fb996aSEvgeniy Dushistov (unsigned long long)new_fragment, !phys); 3981da177e4SLinus Torvalds 3991da177e4SLinus Torvalds result = NULL; 4001da177e4SLinus Torvalds if (!bh) 4011da177e4SLinus Torvalds goto out; 4021da177e4SLinus Torvalds if (!buffer_uptodate(bh)) { 4031da177e4SLinus Torvalds ll_rw_block (READ, 1, &bh); 4041da177e4SLinus Torvalds wait_on_buffer (bh); 4051da177e4SLinus Torvalds if (!buffer_uptodate(bh)) 4061da177e4SLinus Torvalds goto out; 4071da177e4SLinus Torvalds } 40854fb996aSEvgeniy Dushistov if (uspi->fs_magic == UFS2_MAGIC) 40954fb996aSEvgeniy Dushistov p = (__fs64 *)bh->b_data + block; 41054fb996aSEvgeniy Dushistov else 4111da177e4SLinus Torvalds p = (__fs32 *)bh->b_data + block; 4121da177e4SLinus Torvalds repeat: 41354fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, p); 4141da177e4SLinus Torvalds if (tmp) { 415022a6dc5SEvgeniy Dushistov if (!phys) { 4161da177e4SLinus Torvalds result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 41754fb996aSEvgeniy Dushistov if (tmp == ufs_data_ptr_to_cpu(sb, p)) 4181da177e4SLinus Torvalds goto out; 4191da177e4SLinus Torvalds brelse (result); 4201da177e4SLinus Torvalds goto repeat; 4211da177e4SLinus Torvalds } else { 4224b25a37eSEvgeniy Dushistov *phys = uspi->s_sbbase + tmp + blockoff; 4231da177e4SLinus Torvalds goto out; 4241da177e4SLinus Torvalds } 4251da177e4SLinus Torvalds } 4261da177e4SLinus Torvalds 42754fb996aSEvgeniy Dushistov if (block && (uspi->fs_magic == UFS2_MAGIC ? 42854fb996aSEvgeniy Dushistov (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[block-1])) : 42954fb996aSEvgeniy Dushistov (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[block-1])))) 4301da177e4SLinus Torvalds goal = tmp + uspi->s_fpb; 4311da177e4SLinus Torvalds else 4321da177e4SLinus Torvalds goal = bh->b_blocknr + uspi->s_fpb; 4336ef4d6bfSEvgeniy Dushistov tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal, 4346ef4d6bfSEvgeniy Dushistov uspi->s_fpb, err, locked_page); 4351da177e4SLinus Torvalds if (!tmp) { 43654fb996aSEvgeniy Dushistov if (ufs_data_ptr_to_cpu(sb, p)) 4371da177e4SLinus Torvalds goto repeat; 4381da177e4SLinus Torvalds goto out; 4391da177e4SLinus Torvalds } 4401da177e4SLinus Torvalds 441c9a27b5dSEvgeniy Dushistov 442022a6dc5SEvgeniy Dushistov if (!phys) { 4434b25a37eSEvgeniy Dushistov result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 4441da177e4SLinus Torvalds } else { 4454b25a37eSEvgeniy Dushistov *phys = uspi->s_sbbase + tmp + blockoff; 4461da177e4SLinus Torvalds *new = 1; 4471da177e4SLinus Torvalds } 4481da177e4SLinus Torvalds 4491da177e4SLinus Torvalds mark_buffer_dirty(bh); 4501da177e4SLinus Torvalds if (IS_SYNC(inode)) 4511da177e4SLinus Torvalds sync_dirty_buffer(bh); 4521da177e4SLinus Torvalds inode->i_ctime = CURRENT_TIME_SEC; 4531da177e4SLinus Torvalds mark_inode_dirty(inode); 45454fb996aSEvgeniy Dushistov UFSD("result %llu\n", (unsigned long long)tmp + blockoff); 4551da177e4SLinus Torvalds out: 4561da177e4SLinus Torvalds brelse (bh); 457abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 4581da177e4SLinus Torvalds return result; 4591da177e4SLinus Torvalds } 4601da177e4SLinus Torvalds 461022a6dc5SEvgeniy Dushistov /** 4627422caa5SAlessio Igor Bogani * ufs_getfrag_block() - `get_block_t' function, interface between UFS and 463022a6dc5SEvgeniy Dushistov * readpage, writepage and so on 4641da177e4SLinus Torvalds */ 4651da177e4SLinus Torvalds 466010d331fSAl Viro static int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create) 4671da177e4SLinus Torvalds { 4681da177e4SLinus Torvalds struct super_block * sb = inode->i_sb; 469788257d6SArnd Bergmann struct ufs_sb_info * sbi = UFS_SB(sb); 470788257d6SArnd Bergmann struct ufs_sb_private_info * uspi = sbi->s_uspi; 4711da177e4SLinus Torvalds struct buffer_head * bh; 4721da177e4SLinus Torvalds int ret, err, new; 4731da177e4SLinus Torvalds unsigned long ptr,phys; 4741da177e4SLinus Torvalds u64 phys64 = 0; 4751da177e4SLinus Torvalds 4761da177e4SLinus Torvalds if (!create) { 477724bb09fSAl Viro phys64 = ufs_frag_map(inode, fragment); 4787256d819SAndrew Morton UFSD("phys64 = %llu\n", (unsigned long long)phys64); 4791da177e4SLinus Torvalds if (phys64) 4801da177e4SLinus Torvalds map_bh(bh_result, sb, phys64); 4811da177e4SLinus Torvalds return 0; 4821da177e4SLinus Torvalds } 4831da177e4SLinus Torvalds 4841da177e4SLinus Torvalds /* This code entered only while writing ....? */ 4851da177e4SLinus Torvalds 4861da177e4SLinus Torvalds err = -EIO; 4871da177e4SLinus Torvalds new = 0; 4881da177e4SLinus Torvalds ret = 0; 4891da177e4SLinus Torvalds bh = NULL; 4901da177e4SLinus Torvalds 491724bb09fSAl Viro mutex_lock(&UFS_I(inode)->truncate_mutex); 4921da177e4SLinus Torvalds 493abf5d15fSEvgeniy Dushistov UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment); 4941da177e4SLinus Torvalds if (fragment > 4951da177e4SLinus Torvalds ((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb) 4961da177e4SLinus Torvalds << uspi->s_fpbshift)) 4971da177e4SLinus Torvalds goto abort_too_big; 4981da177e4SLinus Torvalds 4991da177e4SLinus Torvalds err = 0; 5001da177e4SLinus Torvalds ptr = fragment; 5011da177e4SLinus Torvalds 5021da177e4SLinus Torvalds /* 5031da177e4SLinus Torvalds * ok, these macros clean the logic up a bit and make 5041da177e4SLinus Torvalds * it much more readable: 5051da177e4SLinus Torvalds */ 5061da177e4SLinus Torvalds #define GET_INODE_DATABLOCK(x) \ 507a685e26fSEvgeniy Dushistov ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new,\ 508a685e26fSEvgeniy Dushistov bh_result->b_page) 5091da177e4SLinus Torvalds #define GET_INODE_PTR(x) \ 510a685e26fSEvgeniy Dushistov ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL,\ 511a685e26fSEvgeniy Dushistov bh_result->b_page) 5121da177e4SLinus Torvalds #define GET_INDIRECT_DATABLOCK(x) \ 513022a6dc5SEvgeniy Dushistov ufs_inode_getblock(inode, bh, x, fragment, \ 514d63b7090SEvgeniy Dushistov &err, &phys, &new, bh_result->b_page) 5151da177e4SLinus Torvalds #define GET_INDIRECT_PTR(x) \ 516022a6dc5SEvgeniy Dushistov ufs_inode_getblock(inode, bh, x, fragment, \ 517d63b7090SEvgeniy Dushistov &err, NULL, NULL, NULL) 5181da177e4SLinus Torvalds 5191da177e4SLinus Torvalds if (ptr < UFS_NDIR_FRAGMENT) { 5201da177e4SLinus Torvalds bh = GET_INODE_DATABLOCK(ptr); 5211da177e4SLinus Torvalds goto out; 5221da177e4SLinus Torvalds } 5231da177e4SLinus Torvalds ptr -= UFS_NDIR_FRAGMENT; 5241da177e4SLinus Torvalds if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) { 5251da177e4SLinus Torvalds bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift)); 5261da177e4SLinus Torvalds goto get_indirect; 5271da177e4SLinus Torvalds } 5281da177e4SLinus Torvalds ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift); 5291da177e4SLinus Torvalds if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) { 5301da177e4SLinus Torvalds bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift)); 5311da177e4SLinus Torvalds goto get_double; 5321da177e4SLinus Torvalds } 5331da177e4SLinus Torvalds ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift); 5341da177e4SLinus Torvalds bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift)); 5351da177e4SLinus Torvalds bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask); 5361da177e4SLinus Torvalds get_double: 5371da177e4SLinus Torvalds bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask); 5381da177e4SLinus Torvalds get_indirect: 5391da177e4SLinus Torvalds bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask); 5401da177e4SLinus Torvalds 5411da177e4SLinus Torvalds #undef GET_INODE_DATABLOCK 5421da177e4SLinus Torvalds #undef GET_INODE_PTR 5431da177e4SLinus Torvalds #undef GET_INDIRECT_DATABLOCK 5441da177e4SLinus Torvalds #undef GET_INDIRECT_PTR 5451da177e4SLinus Torvalds 5461da177e4SLinus Torvalds out: 5471da177e4SLinus Torvalds if (err) 5481da177e4SLinus Torvalds goto abort; 5491da177e4SLinus Torvalds if (new) 5501da177e4SLinus Torvalds set_buffer_new(bh_result); 5511da177e4SLinus Torvalds map_bh(bh_result, sb, phys); 5521da177e4SLinus Torvalds abort: 553724bb09fSAl Viro mutex_unlock(&UFS_I(inode)->truncate_mutex); 554788257d6SArnd Bergmann 5551da177e4SLinus Torvalds return err; 5561da177e4SLinus Torvalds 5571da177e4SLinus Torvalds abort_too_big: 5581da177e4SLinus Torvalds ufs_warning(sb, "ufs_get_block", "block > big"); 5591da177e4SLinus Torvalds goto abort; 5601da177e4SLinus Torvalds } 5611da177e4SLinus Torvalds 5621da177e4SLinus Torvalds static int ufs_writepage(struct page *page, struct writeback_control *wbc) 5631da177e4SLinus Torvalds { 5641da177e4SLinus Torvalds return block_write_full_page(page,ufs_getfrag_block,wbc); 5651da177e4SLinus Torvalds } 56682b9d1d0SNick Piggin 5671da177e4SLinus Torvalds static int ufs_readpage(struct file *file, struct page *page) 5681da177e4SLinus Torvalds { 5691da177e4SLinus Torvalds return block_read_full_page(page,ufs_getfrag_block); 5701da177e4SLinus Torvalds } 57182b9d1d0SNick Piggin 572f4e420dcSChristoph Hellwig int ufs_prepare_chunk(struct page *page, loff_t pos, unsigned len) 5731da177e4SLinus Torvalds { 5746e1db88dSChristoph Hellwig return __block_write_begin(page, pos, len, ufs_getfrag_block); 5751da177e4SLinus Torvalds } 57682b9d1d0SNick Piggin 577010d331fSAl Viro static void ufs_truncate_blocks(struct inode *); 578010d331fSAl Viro 57983f6e371SMarco Stornelli static void ufs_write_failed(struct address_space *mapping, loff_t to) 58083f6e371SMarco Stornelli { 58183f6e371SMarco Stornelli struct inode *inode = mapping->host; 58283f6e371SMarco Stornelli 5833b7a3a05SAl Viro if (to > inode->i_size) { 5847caef267SKirill A. Shutemov truncate_pagecache(inode, inode->i_size); 5853b7a3a05SAl Viro ufs_truncate_blocks(inode); 5863b7a3a05SAl Viro } 58783f6e371SMarco Stornelli } 58883f6e371SMarco Stornelli 58982b9d1d0SNick Piggin static int ufs_write_begin(struct file *file, struct address_space *mapping, 59082b9d1d0SNick Piggin loff_t pos, unsigned len, unsigned flags, 59182b9d1d0SNick Piggin struct page **pagep, void **fsdata) 59282b9d1d0SNick Piggin { 593155130a4SChristoph Hellwig int ret; 594155130a4SChristoph Hellwig 595155130a4SChristoph Hellwig ret = block_write_begin(mapping, pos, len, flags, pagep, 596f4e420dcSChristoph Hellwig ufs_getfrag_block); 59783f6e371SMarco Stornelli if (unlikely(ret)) 59883f6e371SMarco Stornelli ufs_write_failed(mapping, pos + len); 599155130a4SChristoph Hellwig 600155130a4SChristoph Hellwig return ret; 60182b9d1d0SNick Piggin } 60282b9d1d0SNick Piggin 6033b7a3a05SAl Viro static int ufs_write_end(struct file *file, struct address_space *mapping, 6043b7a3a05SAl Viro loff_t pos, unsigned len, unsigned copied, 6053b7a3a05SAl Viro struct page *page, void *fsdata) 6063b7a3a05SAl Viro { 6073b7a3a05SAl Viro int ret; 6083b7a3a05SAl Viro 6093b7a3a05SAl Viro ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata); 6103b7a3a05SAl Viro if (ret < len) 6113b7a3a05SAl Viro ufs_write_failed(mapping, pos + len); 6123b7a3a05SAl Viro return ret; 6133b7a3a05SAl Viro } 6143b7a3a05SAl Viro 6151da177e4SLinus Torvalds static sector_t ufs_bmap(struct address_space *mapping, sector_t block) 6161da177e4SLinus Torvalds { 6171da177e4SLinus Torvalds return generic_block_bmap(mapping,block,ufs_getfrag_block); 6181da177e4SLinus Torvalds } 61982b9d1d0SNick Piggin 620f5e54d6eSChristoph Hellwig const struct address_space_operations ufs_aops = { 6211da177e4SLinus Torvalds .readpage = ufs_readpage, 6221da177e4SLinus Torvalds .writepage = ufs_writepage, 62382b9d1d0SNick Piggin .write_begin = ufs_write_begin, 6243b7a3a05SAl Viro .write_end = ufs_write_end, 6251da177e4SLinus Torvalds .bmap = ufs_bmap 6261da177e4SLinus Torvalds }; 6271da177e4SLinus Torvalds 628826843a3SEvgeniy Dushistov static void ufs_set_inode_ops(struct inode *inode) 629826843a3SEvgeniy Dushistov { 630826843a3SEvgeniy Dushistov if (S_ISREG(inode->i_mode)) { 631826843a3SEvgeniy Dushistov inode->i_op = &ufs_file_inode_operations; 632826843a3SEvgeniy Dushistov inode->i_fop = &ufs_file_operations; 633826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 634826843a3SEvgeniy Dushistov } else if (S_ISDIR(inode->i_mode)) { 635826843a3SEvgeniy Dushistov inode->i_op = &ufs_dir_inode_operations; 636826843a3SEvgeniy Dushistov inode->i_fop = &ufs_dir_operations; 637826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 638826843a3SEvgeniy Dushistov } else if (S_ISLNK(inode->i_mode)) { 6394b8061a6SAl Viro if (!inode->i_blocks) { 640826843a3SEvgeniy Dushistov inode->i_op = &ufs_fast_symlink_inode_operations; 6414b8061a6SAl Viro inode->i_link = (char *)UFS_I(inode)->i_u1.i_symlink; 6424b8061a6SAl Viro } else { 643311b9549SDmitry Monakhov inode->i_op = &ufs_symlink_inode_operations; 644826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 645826843a3SEvgeniy Dushistov } 646826843a3SEvgeniy Dushistov } else 647826843a3SEvgeniy Dushistov init_special_inode(inode, inode->i_mode, 648826843a3SEvgeniy Dushistov ufs_get_inode_dev(inode->i_sb, UFS_I(inode))); 649826843a3SEvgeniy Dushistov } 650826843a3SEvgeniy Dushistov 65107a0cfecSEvgeniy Dushistov static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode) 6521da177e4SLinus Torvalds { 6531da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 65405f225dcSEvgeniy Dushistov struct super_block *sb = inode->i_sb; 6556a9a06d9SAl Viro umode_t mode; 6561da177e4SLinus Torvalds 6571da177e4SLinus Torvalds /* 6581da177e4SLinus Torvalds * Copy data to the in-core inode. 6591da177e4SLinus Torvalds */ 6601da177e4SLinus Torvalds inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode); 661bfe86848SMiklos Szeredi set_nlink(inode, fs16_to_cpu(sb, ufs_inode->ui_nlink)); 66207a0cfecSEvgeniy Dushistov if (inode->i_nlink == 0) { 6631da177e4SLinus Torvalds ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 66407a0cfecSEvgeniy Dushistov return -1; 66507a0cfecSEvgeniy Dushistov } 6661da177e4SLinus Torvalds 6671da177e4SLinus Torvalds /* 6681da177e4SLinus Torvalds * Linux now has 32-bit uid and gid, so we can support EFT. 6691da177e4SLinus Torvalds */ 67072235465SEric W. Biederman i_uid_write(inode, ufs_get_inode_uid(sb, ufs_inode)); 67172235465SEric W. Biederman i_gid_write(inode, ufs_get_inode_gid(sb, ufs_inode)); 6721da177e4SLinus Torvalds 6731da177e4SLinus Torvalds inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); 6741da177e4SLinus Torvalds inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); 6751da177e4SLinus Torvalds inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); 6761da177e4SLinus Torvalds inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); 6771da177e4SLinus Torvalds inode->i_mtime.tv_nsec = 0; 6781da177e4SLinus Torvalds inode->i_atime.tv_nsec = 0; 6791da177e4SLinus Torvalds inode->i_ctime.tv_nsec = 0; 6801da177e4SLinus Torvalds inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); 6813313e292SEvgeniy Dushistov inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen); 6821da177e4SLinus Torvalds ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); 6831da177e4SLinus Torvalds ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 6841da177e4SLinus Torvalds ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 68505f225dcSEvgeniy Dushistov 6861da177e4SLinus Torvalds 6871da177e4SLinus Torvalds if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 688f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr, 689f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 690dd187a26SEvgeniy Dushistov } else { 691f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink, 692b12903f1SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink) - 1); 693b12903f1SDuane Griffin ufsi->i_u1.i_symlink[sizeof(ufs_inode->ui_u2.ui_symlink) - 1] = 0; 6941da177e4SLinus Torvalds } 69507a0cfecSEvgeniy Dushistov return 0; 69605f225dcSEvgeniy Dushistov } 6971da177e4SLinus Torvalds 69807a0cfecSEvgeniy Dushistov static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode) 69905f225dcSEvgeniy Dushistov { 70005f225dcSEvgeniy Dushistov struct ufs_inode_info *ufsi = UFS_I(inode); 70105f225dcSEvgeniy Dushistov struct super_block *sb = inode->i_sb; 7026a9a06d9SAl Viro umode_t mode; 7031da177e4SLinus Torvalds 704abf5d15fSEvgeniy Dushistov UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino); 7051da177e4SLinus Torvalds /* 7061da177e4SLinus Torvalds * Copy data to the in-core inode. 7071da177e4SLinus Torvalds */ 7081da177e4SLinus Torvalds inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode); 709bfe86848SMiklos Szeredi set_nlink(inode, fs16_to_cpu(sb, ufs2_inode->ui_nlink)); 71007a0cfecSEvgeniy Dushistov if (inode->i_nlink == 0) { 7111da177e4SLinus Torvalds ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 71207a0cfecSEvgeniy Dushistov return -1; 71307a0cfecSEvgeniy Dushistov } 7141da177e4SLinus Torvalds 7151da177e4SLinus Torvalds /* 7161da177e4SLinus Torvalds * Linux now has 32-bit uid and gid, so we can support EFT. 7171da177e4SLinus Torvalds */ 71872235465SEric W. Biederman i_uid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_uid)); 71972235465SEric W. Biederman i_gid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_gid)); 7201da177e4SLinus Torvalds 7211da177e4SLinus Torvalds inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size); 7222189850fSEvgeniy Dushistov inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime); 7232189850fSEvgeniy Dushistov inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime); 7242189850fSEvgeniy Dushistov inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime); 7252189850fSEvgeniy Dushistov inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec); 7262189850fSEvgeniy Dushistov inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec); 7272189850fSEvgeniy Dushistov inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec); 7281da177e4SLinus Torvalds inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks); 7293313e292SEvgeniy Dushistov inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen); 7301da177e4SLinus Torvalds ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags); 7311da177e4SLinus Torvalds /* 7321da177e4SLinus Torvalds ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 7331da177e4SLinus Torvalds ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 7341da177e4SLinus Torvalds */ 7351da177e4SLinus Torvalds 7361da177e4SLinus Torvalds if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 737f33219b7SDuane Griffin memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr, 738f33219b7SDuane Griffin sizeof(ufs2_inode->ui_u2.ui_addr)); 73905f225dcSEvgeniy Dushistov } else { 740f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink, 741b12903f1SDuane Griffin sizeof(ufs2_inode->ui_u2.ui_symlink) - 1); 742b12903f1SDuane Griffin ufsi->i_u1.i_symlink[sizeof(ufs2_inode->ui_u2.ui_symlink) - 1] = 0; 7431da177e4SLinus Torvalds } 74407a0cfecSEvgeniy Dushistov return 0; 74505f225dcSEvgeniy Dushistov } 74605f225dcSEvgeniy Dushistov 747b55c460dSDavid Howells struct inode *ufs_iget(struct super_block *sb, unsigned long ino) 74805f225dcSEvgeniy Dushistov { 749b55c460dSDavid Howells struct ufs_inode_info *ufsi; 750b55c460dSDavid Howells struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 75105f225dcSEvgeniy Dushistov struct buffer_head * bh; 752b55c460dSDavid Howells struct inode *inode; 75307a0cfecSEvgeniy Dushistov int err; 75405f225dcSEvgeniy Dushistov 755b55c460dSDavid Howells UFSD("ENTER, ino %lu\n", ino); 75605f225dcSEvgeniy Dushistov 757b55c460dSDavid Howells if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) { 75805f225dcSEvgeniy Dushistov ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n", 759b55c460dSDavid Howells ino); 760b55c460dSDavid Howells return ERR_PTR(-EIO); 76105f225dcSEvgeniy Dushistov } 76205f225dcSEvgeniy Dushistov 763b55c460dSDavid Howells inode = iget_locked(sb, ino); 764b55c460dSDavid Howells if (!inode) 765b55c460dSDavid Howells return ERR_PTR(-ENOMEM); 766b55c460dSDavid Howells if (!(inode->i_state & I_NEW)) 767b55c460dSDavid Howells return inode; 768b55c460dSDavid Howells 769b55c460dSDavid Howells ufsi = UFS_I(inode); 770b55c460dSDavid Howells 77105f225dcSEvgeniy Dushistov bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino)); 77205f225dcSEvgeniy Dushistov if (!bh) { 77305f225dcSEvgeniy Dushistov ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n", 77405f225dcSEvgeniy Dushistov inode->i_ino); 77505f225dcSEvgeniy Dushistov goto bad_inode; 77605f225dcSEvgeniy Dushistov } 77705f225dcSEvgeniy Dushistov if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { 77805f225dcSEvgeniy Dushistov struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 77905f225dcSEvgeniy Dushistov 78007a0cfecSEvgeniy Dushistov err = ufs2_read_inode(inode, 78105f225dcSEvgeniy Dushistov ufs2_inode + ufs_inotofsbo(inode->i_ino)); 78205f225dcSEvgeniy Dushistov } else { 78305f225dcSEvgeniy Dushistov struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data; 78405f225dcSEvgeniy Dushistov 78507a0cfecSEvgeniy Dushistov err = ufs1_read_inode(inode, 78607a0cfecSEvgeniy Dushistov ufs_inode + ufs_inotofsbo(inode->i_ino)); 78705f225dcSEvgeniy Dushistov } 78805f225dcSEvgeniy Dushistov 78907a0cfecSEvgeniy Dushistov if (err) 79007a0cfecSEvgeniy Dushistov goto bad_inode; 79105f225dcSEvgeniy Dushistov inode->i_version++; 79205f225dcSEvgeniy Dushistov ufsi->i_lastfrag = 79305f225dcSEvgeniy Dushistov (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; 79405f225dcSEvgeniy Dushistov ufsi->i_dir_start_lookup = 0; 7951da177e4SLinus Torvalds ufsi->i_osync = 0; 7961da177e4SLinus Torvalds 797826843a3SEvgeniy Dushistov ufs_set_inode_ops(inode); 7981da177e4SLinus Torvalds 7991da177e4SLinus Torvalds brelse(bh); 8001da177e4SLinus Torvalds 801abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 802b55c460dSDavid Howells unlock_new_inode(inode); 803b55c460dSDavid Howells return inode; 80405f225dcSEvgeniy Dushistov 80505f225dcSEvgeniy Dushistov bad_inode: 806b55c460dSDavid Howells iget_failed(inode); 807b55c460dSDavid Howells return ERR_PTR(-EIO); 8081da177e4SLinus Torvalds } 8091da177e4SLinus Torvalds 8103313e292SEvgeniy Dushistov static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode) 8111da177e4SLinus Torvalds { 8123313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 8131da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 8141da177e4SLinus Torvalds 8151da177e4SLinus Torvalds ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 8161da177e4SLinus Torvalds ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 8171da177e4SLinus Torvalds 81872235465SEric W. Biederman ufs_set_inode_uid(sb, ufs_inode, i_uid_read(inode)); 81972235465SEric W. Biederman ufs_set_inode_gid(sb, ufs_inode, i_gid_read(inode)); 8201da177e4SLinus Torvalds 8211da177e4SLinus Torvalds ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 8221da177e4SLinus Torvalds ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec); 8231da177e4SLinus Torvalds ufs_inode->ui_atime.tv_usec = 0; 8241da177e4SLinus Torvalds ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec); 8251da177e4SLinus Torvalds ufs_inode->ui_ctime.tv_usec = 0; 8261da177e4SLinus Torvalds ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec); 8271da177e4SLinus Torvalds ufs_inode->ui_mtime.tv_usec = 0; 8281da177e4SLinus Torvalds ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks); 8291da177e4SLinus Torvalds ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 8303313e292SEvgeniy Dushistov ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); 8311da177e4SLinus Torvalds 8323313e292SEvgeniy Dushistov if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) { 8331da177e4SLinus Torvalds ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow); 8341da177e4SLinus Torvalds ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag); 8351da177e4SLinus Torvalds } 8361da177e4SLinus Torvalds 8371da177e4SLinus Torvalds if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 8381da177e4SLinus Torvalds /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 8391da177e4SLinus Torvalds ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0]; 8401da177e4SLinus Torvalds } else if (inode->i_blocks) { 841f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data, 842f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 8431da177e4SLinus Torvalds } 8441da177e4SLinus Torvalds else { 845f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, 846f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink)); 8471da177e4SLinus Torvalds } 8481da177e4SLinus Torvalds 8491da177e4SLinus Torvalds if (!inode->i_nlink) 8501da177e4SLinus Torvalds memset (ufs_inode, 0, sizeof(struct ufs_inode)); 8513313e292SEvgeniy Dushistov } 8523313e292SEvgeniy Dushistov 8533313e292SEvgeniy Dushistov static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode) 8543313e292SEvgeniy Dushistov { 8553313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 8563313e292SEvgeniy Dushistov struct ufs_inode_info *ufsi = UFS_I(inode); 8573313e292SEvgeniy Dushistov 8583313e292SEvgeniy Dushistov UFSD("ENTER\n"); 8593313e292SEvgeniy Dushistov ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 8603313e292SEvgeniy Dushistov ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 8613313e292SEvgeniy Dushistov 86272235465SEric W. Biederman ufs_inode->ui_uid = cpu_to_fs32(sb, i_uid_read(inode)); 86372235465SEric W. Biederman ufs_inode->ui_gid = cpu_to_fs32(sb, i_gid_read(inode)); 8643313e292SEvgeniy Dushistov 8653313e292SEvgeniy Dushistov ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 8662189850fSEvgeniy Dushistov ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec); 8672189850fSEvgeniy Dushistov ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec); 8682189850fSEvgeniy Dushistov ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec); 8692189850fSEvgeniy Dushistov ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec); 8702189850fSEvgeniy Dushistov ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec); 8712189850fSEvgeniy Dushistov ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec); 8723313e292SEvgeniy Dushistov 8733313e292SEvgeniy Dushistov ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks); 8743313e292SEvgeniy Dushistov ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 8753313e292SEvgeniy Dushistov ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); 8763313e292SEvgeniy Dushistov 8773313e292SEvgeniy Dushistov if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 8783313e292SEvgeniy Dushistov /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 8793313e292SEvgeniy Dushistov ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0]; 8803313e292SEvgeniy Dushistov } else if (inode->i_blocks) { 881f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data, 882f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 8833313e292SEvgeniy Dushistov } else { 884f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, 885f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink)); 8863313e292SEvgeniy Dushistov } 8873313e292SEvgeniy Dushistov 8883313e292SEvgeniy Dushistov if (!inode->i_nlink) 8893313e292SEvgeniy Dushistov memset (ufs_inode, 0, sizeof(struct ufs2_inode)); 8903313e292SEvgeniy Dushistov UFSD("EXIT\n"); 8913313e292SEvgeniy Dushistov } 8923313e292SEvgeniy Dushistov 8933313e292SEvgeniy Dushistov static int ufs_update_inode(struct inode * inode, int do_sync) 8943313e292SEvgeniy Dushistov { 8953313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 8963313e292SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 8973313e292SEvgeniy Dushistov struct buffer_head * bh; 8983313e292SEvgeniy Dushistov 8993313e292SEvgeniy Dushistov UFSD("ENTER, ino %lu\n", inode->i_ino); 9003313e292SEvgeniy Dushistov 9013313e292SEvgeniy Dushistov if (inode->i_ino < UFS_ROOTINO || 9023313e292SEvgeniy Dushistov inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { 9033313e292SEvgeniy Dushistov ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); 9043313e292SEvgeniy Dushistov return -1; 9053313e292SEvgeniy Dushistov } 9063313e292SEvgeniy Dushistov 9073313e292SEvgeniy Dushistov bh = sb_bread(sb, ufs_inotofsba(inode->i_ino)); 9083313e292SEvgeniy Dushistov if (!bh) { 9093313e292SEvgeniy Dushistov ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); 9103313e292SEvgeniy Dushistov return -1; 9113313e292SEvgeniy Dushistov } 9123313e292SEvgeniy Dushistov if (uspi->fs_magic == UFS2_MAGIC) { 9133313e292SEvgeniy Dushistov struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 9143313e292SEvgeniy Dushistov 9153313e292SEvgeniy Dushistov ufs2_update_inode(inode, 9163313e292SEvgeniy Dushistov ufs2_inode + ufs_inotofsbo(inode->i_ino)); 9173313e292SEvgeniy Dushistov } else { 9183313e292SEvgeniy Dushistov struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data; 9193313e292SEvgeniy Dushistov 9203313e292SEvgeniy Dushistov ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino)); 9213313e292SEvgeniy Dushistov } 9221da177e4SLinus Torvalds 9231da177e4SLinus Torvalds mark_buffer_dirty(bh); 9241da177e4SLinus Torvalds if (do_sync) 9251da177e4SLinus Torvalds sync_dirty_buffer(bh); 9261da177e4SLinus Torvalds brelse (bh); 9271da177e4SLinus Torvalds 928abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 9291da177e4SLinus Torvalds return 0; 9301da177e4SLinus Torvalds } 9311da177e4SLinus Torvalds 932a9185b41SChristoph Hellwig int ufs_write_inode(struct inode *inode, struct writeback_control *wbc) 9331da177e4SLinus Torvalds { 934f3e0f3daSAl Viro return ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL); 9351da177e4SLinus Torvalds } 9361da177e4SLinus Torvalds 9371da177e4SLinus Torvalds int ufs_sync_inode (struct inode *inode) 9381da177e4SLinus Torvalds { 9391da177e4SLinus Torvalds return ufs_update_inode (inode, 1); 9401da177e4SLinus Torvalds } 9411da177e4SLinus Torvalds 94258e8268cSAl Viro void ufs_evict_inode(struct inode * inode) 9431da177e4SLinus Torvalds { 94458e8268cSAl Viro int want_delete = 0; 94558e8268cSAl Viro 94658e8268cSAl Viro if (!inode->i_nlink && !is_bad_inode(inode)) 94758e8268cSAl Viro want_delete = 1; 94810e5dce0SEvgeniy Dushistov 94991b0abe3SJohannes Weiner truncate_inode_pages_final(&inode->i_data); 95058e8268cSAl Viro if (want_delete) { 9511da177e4SLinus Torvalds inode->i_size = 0; 952d622f167SAl Viro if (inode->i_blocks) 953d622f167SAl Viro ufs_truncate_blocks(inode); 95458e8268cSAl Viro } 95558e8268cSAl Viro 95658e8268cSAl Viro invalidate_inode_buffers(inode); 957dbd5768fSJan Kara clear_inode(inode); 95858e8268cSAl Viro 959f3e0f3daSAl Viro if (want_delete) 9601da177e4SLinus Torvalds ufs_free_inode(inode); 9611da177e4SLinus Torvalds } 962010d331fSAl Viro 963a138b4b6SAl Viro struct to_free { 964a138b4b6SAl Viro struct inode *inode; 965a138b4b6SAl Viro u64 to; 966a138b4b6SAl Viro unsigned count; 967a138b4b6SAl Viro }; 968a138b4b6SAl Viro 969a138b4b6SAl Viro static inline void free_data(struct to_free *ctx, u64 from, unsigned count) 970a138b4b6SAl Viro { 971a138b4b6SAl Viro if (ctx->count && ctx->to != from) { 972a138b4b6SAl Viro ufs_free_blocks(ctx->inode, ctx->to - ctx->count, ctx->count); 973a138b4b6SAl Viro ctx->count = 0; 974a138b4b6SAl Viro } 975a138b4b6SAl Viro ctx->count += count; 976a138b4b6SAl Viro ctx->to = from + count; 977a138b4b6SAl Viro } 978a138b4b6SAl Viro 979010d331fSAl Viro #define DIRECT_BLOCK ((inode->i_size + uspi->s_bsize - 1) >> uspi->s_bshift) 980010d331fSAl Viro #define DIRECT_FRAGMENT ((inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift) 981010d331fSAl Viro 982010d331fSAl Viro static void ufs_trunc_direct(struct inode *inode) 983010d331fSAl Viro { 984010d331fSAl Viro struct ufs_inode_info *ufsi = UFS_I(inode); 985010d331fSAl Viro struct super_block * sb; 986010d331fSAl Viro struct ufs_sb_private_info * uspi; 987010d331fSAl Viro void *p; 988010d331fSAl Viro u64 frag1, frag2, frag3, frag4, block1, block2; 989a138b4b6SAl Viro struct to_free ctx = {.inode = inode}; 990010d331fSAl Viro unsigned i, tmp; 991010d331fSAl Viro 992010d331fSAl Viro UFSD("ENTER: ino %lu\n", inode->i_ino); 993010d331fSAl Viro 994010d331fSAl Viro sb = inode->i_sb; 995010d331fSAl Viro uspi = UFS_SB(sb)->s_uspi; 996010d331fSAl Viro 997010d331fSAl Viro frag1 = DIRECT_FRAGMENT; 998010d331fSAl Viro frag4 = min_t(u64, UFS_NDIR_FRAGMENT, ufsi->i_lastfrag); 999010d331fSAl Viro frag2 = ((frag1 & uspi->s_fpbmask) ? ((frag1 | uspi->s_fpbmask) + 1) : frag1); 1000010d331fSAl Viro frag3 = frag4 & ~uspi->s_fpbmask; 1001010d331fSAl Viro block1 = block2 = 0; 1002010d331fSAl Viro if (frag2 > frag3) { 1003010d331fSAl Viro frag2 = frag4; 1004010d331fSAl Viro frag3 = frag4 = 0; 1005010d331fSAl Viro } else if (frag2 < frag3) { 1006010d331fSAl Viro block1 = ufs_fragstoblks (frag2); 1007010d331fSAl Viro block2 = ufs_fragstoblks (frag3); 1008010d331fSAl Viro } 1009010d331fSAl Viro 1010010d331fSAl Viro UFSD("ino %lu, frag1 %llu, frag2 %llu, block1 %llu, block2 %llu," 1011010d331fSAl Viro " frag3 %llu, frag4 %llu\n", inode->i_ino, 1012010d331fSAl Viro (unsigned long long)frag1, (unsigned long long)frag2, 1013010d331fSAl Viro (unsigned long long)block1, (unsigned long long)block2, 1014010d331fSAl Viro (unsigned long long)frag3, (unsigned long long)frag4); 1015010d331fSAl Viro 1016010d331fSAl Viro if (frag1 >= frag2) 1017010d331fSAl Viro goto next1; 1018010d331fSAl Viro 1019010d331fSAl Viro /* 1020010d331fSAl Viro * Free first free fragments 1021010d331fSAl Viro */ 1022010d331fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag1)); 1023010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 1024010d331fSAl Viro if (!tmp ) 1025010d331fSAl Viro ufs_panic (sb, "ufs_trunc_direct", "internal error"); 1026010d331fSAl Viro frag2 -= frag1; 1027010d331fSAl Viro frag1 = ufs_fragnum (frag1); 1028010d331fSAl Viro 1029010d331fSAl Viro ufs_free_fragments(inode, tmp + frag1, frag2); 1030010d331fSAl Viro mark_inode_dirty(inode); 1031010d331fSAl Viro 1032010d331fSAl Viro next1: 1033010d331fSAl Viro /* 1034010d331fSAl Viro * Free whole blocks 1035010d331fSAl Viro */ 1036010d331fSAl Viro for (i = block1 ; i < block2; i++) { 1037010d331fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, i); 1038010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 1039010d331fSAl Viro if (!tmp) 1040010d331fSAl Viro continue; 1041010d331fSAl Viro write_seqlock(&ufsi->meta_lock); 1042010d331fSAl Viro ufs_data_ptr_clear(uspi, p); 1043010d331fSAl Viro write_sequnlock(&ufsi->meta_lock); 1044010d331fSAl Viro 1045a138b4b6SAl Viro free_data(&ctx, tmp, uspi->s_fpb); 1046010d331fSAl Viro mark_inode_dirty(inode); 1047010d331fSAl Viro } 1048010d331fSAl Viro 1049a138b4b6SAl Viro free_data(&ctx, 0, 0); 1050010d331fSAl Viro 1051010d331fSAl Viro if (frag3 >= frag4) 1052010d331fSAl Viro goto next3; 1053010d331fSAl Viro 1054010d331fSAl Viro /* 1055010d331fSAl Viro * Free last free fragments 1056010d331fSAl Viro */ 1057010d331fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag3)); 1058010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 1059010d331fSAl Viro if (!tmp ) 1060010d331fSAl Viro ufs_panic(sb, "ufs_truncate_direct", "internal error"); 1061010d331fSAl Viro frag4 = ufs_fragnum (frag4); 1062010d331fSAl Viro write_seqlock(&ufsi->meta_lock); 1063010d331fSAl Viro ufs_data_ptr_clear(uspi, p); 1064010d331fSAl Viro write_sequnlock(&ufsi->meta_lock); 1065010d331fSAl Viro 1066010d331fSAl Viro ufs_free_fragments (inode, tmp, frag4); 1067010d331fSAl Viro mark_inode_dirty(inode); 1068010d331fSAl Viro next3: 1069010d331fSAl Viro 1070010d331fSAl Viro UFSD("EXIT: ino %lu\n", inode->i_ino); 1071010d331fSAl Viro } 1072010d331fSAl Viro 10739e0fbbdeSAl Viro static void ufs_trunc_branch(struct inode *inode, unsigned *offsets, int depth2, int depth, void *p) 1074010d331fSAl Viro { 10756ac36b87SAl Viro struct super_block *sb = inode->i_sb; 10766ac36b87SAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 10779e0fbbdeSAl Viro struct ufs_inode_info *ufsi = UFS_I(inode); 10789e0fbbdeSAl Viro struct ufs_buffer_head *ubh; 10799e0fbbdeSAl Viro u64 tmp; 108097e0f8f8SAl Viro bool free_it = !offsets; 10819e0fbbdeSAl Viro unsigned from = offsets ? *offsets++ : 0; 10826ac36b87SAl Viro unsigned i; 1083010d331fSAl Viro 1084010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 1085010d331fSAl Viro if (!tmp) 1086010d331fSAl Viro return; 10879e0fbbdeSAl Viro ubh = ubh_bread (sb, tmp, uspi->s_bsize); 10889e0fbbdeSAl Viro if (!ubh) { 10899e0fbbdeSAl Viro write_seqlock(&ufsi->meta_lock); 1090010d331fSAl Viro ufs_data_ptr_clear(uspi, p); 10919e0fbbdeSAl Viro write_sequnlock(&ufsi->meta_lock); 1092010d331fSAl Viro return; 1093010d331fSAl Viro } 1094010d331fSAl Viro 10959e0fbbdeSAl Viro if (--depth) { 1096a9657423SAl Viro if (offsets && --depth2) { 1097a9657423SAl Viro void *ind = ubh_get_data_ptr(uspi, ubh, from++); 109897e0f8f8SAl Viro ufs_trunc_branch(inode, offsets, depth2, depth, ind); 10999e0fbbdeSAl Viro ubh_mark_buffer_dirty(ubh); 11009e0fbbdeSAl Viro } 1101a9657423SAl Viro for (i = from ; i < uspi->s_apb ; i++) { 1102a9657423SAl Viro void *ind = ubh_get_data_ptr(uspi, ubh, i); 1103a9657423SAl Viro ufs_trunc_branch(inode, NULL, 0, depth, ind); 1104a9657423SAl Viro ubh_mark_buffer_dirty(ubh); 1105a9657423SAl Viro } 11069e0fbbdeSAl Viro } else { 1107a138b4b6SAl Viro struct to_free ctx = {.inode = inode}; 11089e0fbbdeSAl Viro 11096ac36b87SAl Viro for (i = from; i < uspi->s_apb; i++) { 11109e0fbbdeSAl Viro void *ind = ubh_get_data_ptr(uspi, ubh, i); 1111010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, ind); 1112010d331fSAl Viro if (!tmp) 1113010d331fSAl Viro continue; 1114010d331fSAl Viro 1115010d331fSAl Viro write_seqlock(&UFS_I(inode)->meta_lock); 1116010d331fSAl Viro ufs_data_ptr_clear(uspi, ind); 1117010d331fSAl Viro write_sequnlock(&UFS_I(inode)->meta_lock); 11189e0fbbdeSAl Viro ubh_mark_buffer_dirty(ubh); 1119a138b4b6SAl Viro free_data(&ctx, tmp, uspi->s_fpb); 1120010d331fSAl Viro mark_inode_dirty(inode); 1121010d331fSAl Viro } 1122a138b4b6SAl Viro free_data(&ctx, 0, 0); 1123010d331fSAl Viro } 112418ca51d8SAl Viro if (free_it) { 1125010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 1126010d331fSAl Viro write_seqlock(&ufsi->meta_lock); 1127010d331fSAl Viro ufs_data_ptr_clear(uspi, p); 1128010d331fSAl Viro write_sequnlock(&ufsi->meta_lock); 1129010d331fSAl Viro 11309e0fbbdeSAl Viro ubh_bforget(ubh); 1131010d331fSAl Viro ufs_free_blocks(inode, tmp, uspi->s_fpb); 1132010d331fSAl Viro mark_inode_dirty(inode); 113318ca51d8SAl Viro return; 1134010d331fSAl Viro } 11359e0fbbdeSAl Viro if (IS_SYNC(inode) && ubh_buffer_dirty(ubh)) 11369e0fbbdeSAl Viro ubh_sync_block(ubh); 11379e0fbbdeSAl Viro ubh_brelse(ubh); 1138010d331fSAl Viro } 1139010d331fSAl Viro 1140010d331fSAl Viro static int ufs_alloc_lastblock(struct inode *inode, loff_t size) 1141010d331fSAl Viro { 1142010d331fSAl Viro int err = 0; 1143010d331fSAl Viro struct super_block *sb = inode->i_sb; 1144010d331fSAl Viro struct address_space *mapping = inode->i_mapping; 1145010d331fSAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 1146010d331fSAl Viro unsigned i, end; 1147010d331fSAl Viro sector_t lastfrag; 1148010d331fSAl Viro struct page *lastpage; 1149010d331fSAl Viro struct buffer_head *bh; 1150010d331fSAl Viro u64 phys64; 1151010d331fSAl Viro 1152010d331fSAl Viro lastfrag = (size + uspi->s_fsize - 1) >> uspi->s_fshift; 1153010d331fSAl Viro 1154010d331fSAl Viro if (!lastfrag) 1155010d331fSAl Viro goto out; 1156010d331fSAl Viro 1157010d331fSAl Viro lastfrag--; 1158010d331fSAl Viro 1159010d331fSAl Viro lastpage = ufs_get_locked_page(mapping, lastfrag >> 1160010d331fSAl Viro (PAGE_CACHE_SHIFT - inode->i_blkbits)); 1161010d331fSAl Viro if (IS_ERR(lastpage)) { 1162010d331fSAl Viro err = -EIO; 1163010d331fSAl Viro goto out; 1164010d331fSAl Viro } 1165010d331fSAl Viro 1166010d331fSAl Viro end = lastfrag & ((1 << (PAGE_CACHE_SHIFT - inode->i_blkbits)) - 1); 1167010d331fSAl Viro bh = page_buffers(lastpage); 1168010d331fSAl Viro for (i = 0; i < end; ++i) 1169010d331fSAl Viro bh = bh->b_this_page; 1170010d331fSAl Viro 1171010d331fSAl Viro 1172010d331fSAl Viro err = ufs_getfrag_block(inode, lastfrag, bh, 1); 1173010d331fSAl Viro 1174010d331fSAl Viro if (unlikely(err)) 1175010d331fSAl Viro goto out_unlock; 1176010d331fSAl Viro 1177010d331fSAl Viro if (buffer_new(bh)) { 1178010d331fSAl Viro clear_buffer_new(bh); 1179010d331fSAl Viro unmap_underlying_metadata(bh->b_bdev, 1180010d331fSAl Viro bh->b_blocknr); 1181010d331fSAl Viro /* 1182010d331fSAl Viro * we do not zeroize fragment, because of 1183010d331fSAl Viro * if it maped to hole, it already contains zeroes 1184010d331fSAl Viro */ 1185010d331fSAl Viro set_buffer_uptodate(bh); 1186010d331fSAl Viro mark_buffer_dirty(bh); 1187010d331fSAl Viro set_page_dirty(lastpage); 1188010d331fSAl Viro } 1189010d331fSAl Viro 1190010d331fSAl Viro if (lastfrag >= UFS_IND_FRAGMENT) { 1191010d331fSAl Viro end = uspi->s_fpb - ufs_fragnum(lastfrag) - 1; 1192010d331fSAl Viro phys64 = bh->b_blocknr + 1; 1193010d331fSAl Viro for (i = 0; i < end; ++i) { 1194010d331fSAl Viro bh = sb_getblk(sb, i + phys64); 1195010d331fSAl Viro lock_buffer(bh); 1196010d331fSAl Viro memset(bh->b_data, 0, sb->s_blocksize); 1197010d331fSAl Viro set_buffer_uptodate(bh); 1198010d331fSAl Viro mark_buffer_dirty(bh); 1199010d331fSAl Viro unlock_buffer(bh); 1200010d331fSAl Viro sync_dirty_buffer(bh); 1201010d331fSAl Viro brelse(bh); 1202010d331fSAl Viro } 1203010d331fSAl Viro } 1204010d331fSAl Viro out_unlock: 1205010d331fSAl Viro ufs_put_locked_page(lastpage); 1206010d331fSAl Viro out: 1207010d331fSAl Viro return err; 1208010d331fSAl Viro } 1209010d331fSAl Viro 1210010d331fSAl Viro static void __ufs_truncate_blocks(struct inode *inode) 1211010d331fSAl Viro { 1212010d331fSAl Viro struct ufs_inode_info *ufsi = UFS_I(inode); 1213010d331fSAl Viro struct super_block *sb = inode->i_sb; 1214010d331fSAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 12157bad5939SAl Viro unsigned offsets[4]; 121631cd043eSAl Viro int depth = ufs_block_to_path(inode, DIRECT_BLOCK, offsets); 12176775e24dSAl Viro int depth2; 121842432739SAl Viro unsigned i; 12196775e24dSAl Viro 12206775e24dSAl Viro if (!depth) 12216775e24dSAl Viro return; 12226775e24dSAl Viro 12236775e24dSAl Viro /* find the last non-zero in offsets[] */ 12246775e24dSAl Viro for (depth2 = depth - 1; depth2; depth2--) 12256775e24dSAl Viro if (offsets[depth2]) 12266775e24dSAl Viro break; 1227010d331fSAl Viro 1228010d331fSAl Viro mutex_lock(&ufsi->truncate_mutex); 122942432739SAl Viro if (depth == 1) { 1230010d331fSAl Viro ufs_trunc_direct(inode); 123142432739SAl Viro offsets[0] = UFS_IND_BLOCK; 123242432739SAl Viro } else { 123397e0f8f8SAl Viro if (depth2) 123442432739SAl Viro ufs_trunc_branch(inode, offsets + 1, depth2, depth - 1, 123542432739SAl Viro ufs_get_direct_data_ptr(uspi, ufsi, offsets[0]++)); 123631cd043eSAl Viro } 123742432739SAl Viro for (i = offsets[0]; i <= UFS_TIND_BLOCK; i++) { 123842432739SAl Viro ufs_trunc_branch(inode, NULL, 0, i - UFS_IND_BLOCK + 1, 123942432739SAl Viro ufs_get_direct_data_ptr(uspi, ufsi, i)); 124042432739SAl Viro } 1241010d331fSAl Viro ufsi->i_lastfrag = DIRECT_FRAGMENT; 1242010d331fSAl Viro mutex_unlock(&ufsi->truncate_mutex); 1243010d331fSAl Viro } 1244010d331fSAl Viro 1245010d331fSAl Viro static int ufs_truncate(struct inode *inode, loff_t size) 1246010d331fSAl Viro { 1247010d331fSAl Viro int err = 0; 1248010d331fSAl Viro 1249010d331fSAl Viro UFSD("ENTER: ino %lu, i_size: %llu, old_i_size: %llu\n", 1250010d331fSAl Viro inode->i_ino, (unsigned long long)size, 1251010d331fSAl Viro (unsigned long long)i_size_read(inode)); 1252010d331fSAl Viro 1253010d331fSAl Viro if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1254010d331fSAl Viro S_ISLNK(inode->i_mode))) 1255010d331fSAl Viro return -EINVAL; 1256010d331fSAl Viro if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) 1257010d331fSAl Viro return -EPERM; 1258010d331fSAl Viro 1259010d331fSAl Viro err = ufs_alloc_lastblock(inode, size); 1260010d331fSAl Viro 1261010d331fSAl Viro if (err) 1262010d331fSAl Viro goto out; 1263010d331fSAl Viro 1264010d331fSAl Viro block_truncate_page(inode->i_mapping, size, ufs_getfrag_block); 1265010d331fSAl Viro 1266010d331fSAl Viro truncate_setsize(inode, size); 1267010d331fSAl Viro 1268010d331fSAl Viro __ufs_truncate_blocks(inode); 1269010d331fSAl Viro inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC; 1270010d331fSAl Viro mark_inode_dirty(inode); 1271010d331fSAl Viro out: 1272010d331fSAl Viro UFSD("EXIT: err %d\n", err); 1273010d331fSAl Viro return err; 1274010d331fSAl Viro } 1275010d331fSAl Viro 1276010d331fSAl Viro void ufs_truncate_blocks(struct inode *inode) 1277010d331fSAl Viro { 1278010d331fSAl Viro if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1279010d331fSAl Viro S_ISLNK(inode->i_mode))) 1280010d331fSAl Viro return; 1281010d331fSAl Viro if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) 1282010d331fSAl Viro return; 1283010d331fSAl Viro __ufs_truncate_blocks(inode); 1284010d331fSAl Viro } 1285010d331fSAl Viro 1286010d331fSAl Viro int ufs_setattr(struct dentry *dentry, struct iattr *attr) 1287010d331fSAl Viro { 1288010d331fSAl Viro struct inode *inode = d_inode(dentry); 1289010d331fSAl Viro unsigned int ia_valid = attr->ia_valid; 1290010d331fSAl Viro int error; 1291010d331fSAl Viro 1292010d331fSAl Viro error = inode_change_ok(inode, attr); 1293010d331fSAl Viro if (error) 1294010d331fSAl Viro return error; 1295010d331fSAl Viro 1296010d331fSAl Viro if (ia_valid & ATTR_SIZE && attr->ia_size != inode->i_size) { 1297010d331fSAl Viro error = ufs_truncate(inode, attr->ia_size); 1298010d331fSAl Viro if (error) 1299010d331fSAl Viro return error; 1300010d331fSAl Viro } 1301010d331fSAl Viro 1302010d331fSAl Viro setattr_copy(inode, attr); 1303010d331fSAl Viro mark_inode_dirty(inode); 1304010d331fSAl Viro return 0; 1305010d331fSAl Viro } 1306010d331fSAl Viro 1307010d331fSAl Viro const struct inode_operations ufs_file_inode_operations = { 1308010d331fSAl Viro .setattr = ufs_setattr, 1309010d331fSAl Viro }; 1310