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 1224b7068c8SAl Viro static u64 ufs_frag_map(struct inode *inode, unsigned offsets[4], int depth) 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; 129724bb09fSAl Viro Indirect chain[4], *q = chain; 1304b7068c8SAl Viro unsigned *p; 1311da177e4SLinus Torvalds unsigned flags = UFS_SB(sb)->s_flags; 132724bb09fSAl Viro u64 res = 0; 1331da177e4SLinus Torvalds 1347256d819SAndrew Morton UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n", 1357256d819SAndrew Morton uspi->s_fpbshift, uspi->s_apbmask, 1367256d819SAndrew Morton (unsigned long long)mask); 1371da177e4SLinus Torvalds 1381da177e4SLinus Torvalds if (depth == 0) 139724bb09fSAl Viro goto no_block; 1401da177e4SLinus Torvalds 141724bb09fSAl Viro again: 1421da177e4SLinus Torvalds p = offsets; 1431da177e4SLinus Torvalds 1441da177e4SLinus Torvalds if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 1451da177e4SLinus Torvalds goto ufs2; 1461da177e4SLinus Torvalds 147724bb09fSAl Viro if (!grow_chain32(ufsi, NULL, &ufsi->i_u1.i_data[*p++], chain, q)) 148724bb09fSAl Viro goto changed; 149724bb09fSAl Viro if (!q->key32) 150724bb09fSAl Viro goto no_block; 1511da177e4SLinus Torvalds while (--depth) { 152724bb09fSAl Viro __fs32 *ptr; 1531da177e4SLinus Torvalds struct buffer_head *bh; 1544e3911f3SAl Viro unsigned n = *p++; 1551da177e4SLinus Torvalds 156724bb09fSAl Viro bh = sb_bread(sb, uspi->s_sbbase + 157724bb09fSAl Viro fs32_to_cpu(sb, q->key32) + (n>>shift)); 1581da177e4SLinus Torvalds if (!bh) 159724bb09fSAl Viro goto no_block; 160724bb09fSAl Viro ptr = (__fs32 *)bh->b_data + (n & mask); 161724bb09fSAl Viro if (!grow_chain32(ufsi, bh, ptr, chain, ++q)) 162724bb09fSAl Viro goto changed; 163724bb09fSAl Viro if (!q->key32) 164724bb09fSAl Viro goto no_block; 1651da177e4SLinus Torvalds } 166724bb09fSAl Viro res = fs32_to_cpu(sb, q->key32); 167724bb09fSAl Viro goto found; 168724bb09fSAl Viro 1691da177e4SLinus Torvalds ufs2: 170724bb09fSAl Viro if (!grow_chain64(ufsi, NULL, &ufsi->i_u1.u2_i_data[*p++], chain, q)) 171724bb09fSAl Viro goto changed; 172724bb09fSAl Viro if (!q->key64) 173724bb09fSAl Viro goto no_block; 1741da177e4SLinus Torvalds 1751da177e4SLinus Torvalds while (--depth) { 176724bb09fSAl Viro __fs64 *ptr; 1771da177e4SLinus Torvalds struct buffer_head *bh; 1784e3911f3SAl Viro unsigned n = *p++; 1791da177e4SLinus Torvalds 180724bb09fSAl Viro bh = sb_bread(sb, uspi->s_sbbase + 181724bb09fSAl Viro fs64_to_cpu(sb, q->key64) + (n>>shift)); 1821da177e4SLinus Torvalds if (!bh) 183724bb09fSAl Viro goto no_block; 184724bb09fSAl Viro ptr = (__fs64 *)bh->b_data + (n & mask); 185724bb09fSAl Viro if (!grow_chain64(ufsi, bh, ptr, chain, ++q)) 186724bb09fSAl Viro goto changed; 187724bb09fSAl Viro if (!q->key64) 188724bb09fSAl Viro goto no_block; 1891da177e4SLinus Torvalds } 190724bb09fSAl Viro res = fs64_to_cpu(sb, q->key64); 191724bb09fSAl Viro found: 1924b7068c8SAl Viro res += uspi->s_sbbase; 193724bb09fSAl Viro no_block: 194724bb09fSAl Viro while (q > chain) { 195724bb09fSAl Viro brelse(q->bh); 196724bb09fSAl Viro q--; 197724bb09fSAl Viro } 198724bb09fSAl Viro return res; 1991da177e4SLinus Torvalds 200724bb09fSAl Viro changed: 201724bb09fSAl Viro while (q > chain) { 202724bb09fSAl Viro brelse(q->bh); 203724bb09fSAl Viro q--; 204724bb09fSAl Viro } 205724bb09fSAl Viro goto again; 2061da177e4SLinus Torvalds } 2071da177e4SLinus Torvalds 208022a6dc5SEvgeniy Dushistov /** 209022a6dc5SEvgeniy Dushistov * ufs_inode_getfrag() - allocate new fragment(s) 210edc023caSFabian Frederick * @inode: pointer to inode 211edc023caSFabian Frederick * @fragment: number of `fragment' which hold pointer 212022a6dc5SEvgeniy Dushistov * to new allocated fragment(s) 213edc023caSFabian Frederick * @new_fragment: number of new allocated fragment(s) 214edc023caSFabian Frederick * @required: how many fragment(s) we require 215edc023caSFabian Frederick * @err: we set it if something wrong 216edc023caSFabian Frederick * @phys: pointer to where we save physical number of new allocated fragments, 217022a6dc5SEvgeniy Dushistov * NULL if we allocate not data(indirect blocks for example). 218edc023caSFabian Frederick * @new: we set it if we allocate new block 219edc023caSFabian Frederick * @locked_page: for ufs_new_fragments() 220022a6dc5SEvgeniy Dushistov */ 221022a6dc5SEvgeniy Dushistov static struct buffer_head * 22254fb996aSEvgeniy Dushistov ufs_inode_getfrag(struct inode *inode, u64 fragment, 223022a6dc5SEvgeniy Dushistov sector_t new_fragment, unsigned int required, int *err, 2246ef4d6bfSEvgeniy Dushistov long *phys, int *new, struct page *locked_page) 2251da177e4SLinus Torvalds { 2261da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 227022a6dc5SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 228022a6dc5SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 2291da177e4SLinus Torvalds struct buffer_head * result; 23054fb996aSEvgeniy Dushistov unsigned blockoff, lastblockoff; 23154fb996aSEvgeniy Dushistov u64 tmp, goal, lastfrag, block, lastblock; 23254fb996aSEvgeniy Dushistov void *p, *p2; 2331da177e4SLinus Torvalds 23454fb996aSEvgeniy Dushistov UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, required %u, " 23554fb996aSEvgeniy Dushistov "metadata %d\n", inode->i_ino, (unsigned long long)fragment, 236022a6dc5SEvgeniy Dushistov (unsigned long long)new_fragment, required, !phys); 2371da177e4SLinus Torvalds 2381da177e4SLinus Torvalds /* TODO : to be done for write support 2391da177e4SLinus Torvalds if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 2401da177e4SLinus Torvalds goto ufs2; 2411da177e4SLinus Torvalds */ 2421da177e4SLinus Torvalds 2431da177e4SLinus Torvalds block = ufs_fragstoblks (fragment); 2441da177e4SLinus Torvalds blockoff = ufs_fragnum (fragment); 24554fb996aSEvgeniy Dushistov p = ufs_get_direct_data_ptr(uspi, ufsi, block); 24654fb996aSEvgeniy Dushistov 2471da177e4SLinus Torvalds goal = 0; 2481da177e4SLinus Torvalds 24954fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, p); 25054fb996aSEvgeniy Dushistov 2511da177e4SLinus Torvalds lastfrag = ufsi->i_lastfrag; 2521da177e4SLinus Torvalds if (tmp && fragment < lastfrag) { 253022a6dc5SEvgeniy Dushistov if (!phys) { 2545a39c255SAl Viro return sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 2551da177e4SLinus Torvalds } else { 2564b25a37eSEvgeniy Dushistov *phys = uspi->s_sbbase + tmp + blockoff; 2571da177e4SLinus Torvalds return NULL; 2581da177e4SLinus Torvalds } 2591da177e4SLinus Torvalds } 2601da177e4SLinus Torvalds 2611da177e4SLinus Torvalds lastblock = ufs_fragstoblks (lastfrag); 2621da177e4SLinus Torvalds lastblockoff = ufs_fragnum (lastfrag); 2631da177e4SLinus Torvalds /* 2641da177e4SLinus Torvalds * We will extend file into new block beyond last allocated block 2651da177e4SLinus Torvalds */ 2661da177e4SLinus Torvalds if (lastblock < block) { 2671da177e4SLinus Torvalds /* 2681da177e4SLinus Torvalds * We must reallocate last allocated block 2691da177e4SLinus Torvalds */ 2701da177e4SLinus Torvalds if (lastblockoff) { 27154fb996aSEvgeniy Dushistov p2 = ufs_get_direct_data_ptr(uspi, ufsi, lastblock); 2721da177e4SLinus Torvalds tmp = ufs_new_fragments(inode, p2, lastfrag, 27354fb996aSEvgeniy Dushistov ufs_data_ptr_to_cpu(sb, p2), 27454fb996aSEvgeniy Dushistov uspi->s_fpb - lastblockoff, 2756ef4d6bfSEvgeniy Dushistov err, locked_page); 2765a39c255SAl Viro if (!tmp) 2771da177e4SLinus Torvalds return NULL; 2781da177e4SLinus Torvalds lastfrag = ufsi->i_lastfrag; 2791da177e4SLinus Torvalds } 28054fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, 28154fb996aSEvgeniy Dushistov ufs_get_direct_data_ptr(uspi, ufsi, 28254fb996aSEvgeniy Dushistov lastblock)); 283c37336b0SEvgeniy Dushistov if (tmp) 284c37336b0SEvgeniy Dushistov goal = tmp + uspi->s_fpb; 2851da177e4SLinus Torvalds tmp = ufs_new_fragments (inode, p, fragment - blockoff, 2866ef4d6bfSEvgeniy Dushistov goal, required + blockoff, 287a685e26fSEvgeniy Dushistov err, 288a685e26fSEvgeniy Dushistov phys != NULL ? locked_page : NULL); 28954fb996aSEvgeniy Dushistov } else if (lastblock == block) { 2901da177e4SLinus Torvalds /* 2911da177e4SLinus Torvalds * We will extend last allocated block 2921da177e4SLinus Torvalds */ 29354fb996aSEvgeniy Dushistov tmp = ufs_new_fragments(inode, p, fragment - 29454fb996aSEvgeniy Dushistov (blockoff - lastblockoff), 29554fb996aSEvgeniy Dushistov ufs_data_ptr_to_cpu(sb, p), 29654fb996aSEvgeniy Dushistov required + (blockoff - lastblockoff), 297a685e26fSEvgeniy Dushistov err, phys != NULL ? locked_page : NULL); 298c37336b0SEvgeniy Dushistov } else /* (lastblock > block) */ { 2991da177e4SLinus Torvalds /* 3001da177e4SLinus Torvalds * We will allocate new block before last allocated block 3011da177e4SLinus Torvalds */ 302c37336b0SEvgeniy Dushistov if (block) { 30354fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, 30454fb996aSEvgeniy Dushistov ufs_get_direct_data_ptr(uspi, ufsi, block - 1)); 305c37336b0SEvgeniy Dushistov if (tmp) 3061da177e4SLinus Torvalds goal = tmp + uspi->s_fpb; 307c37336b0SEvgeniy Dushistov } 3081da177e4SLinus Torvalds tmp = ufs_new_fragments(inode, p, fragment - blockoff, 309a685e26fSEvgeniy Dushistov goal, uspi->s_fpb, err, 310a685e26fSEvgeniy Dushistov phys != NULL ? locked_page : NULL); 3111da177e4SLinus Torvalds } 3121da177e4SLinus Torvalds if (!tmp) { 3131da177e4SLinus Torvalds *err = -ENOSPC; 3141da177e4SLinus Torvalds return NULL; 3151da177e4SLinus Torvalds } 3161da177e4SLinus Torvalds 317022a6dc5SEvgeniy Dushistov if (!phys) { 3184b25a37eSEvgeniy Dushistov result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 3191da177e4SLinus Torvalds } else { 3204b25a37eSEvgeniy Dushistov *phys = uspi->s_sbbase + tmp + blockoff; 3211da177e4SLinus Torvalds result = NULL; 3221da177e4SLinus Torvalds *err = 0; 3231da177e4SLinus Torvalds *new = 1; 3241da177e4SLinus Torvalds } 3251da177e4SLinus Torvalds 3261da177e4SLinus Torvalds inode->i_ctime = CURRENT_TIME_SEC; 3271da177e4SLinus Torvalds if (IS_SYNC(inode)) 3281da177e4SLinus Torvalds ufs_sync_inode (inode); 3291da177e4SLinus Torvalds mark_inode_dirty(inode); 3301da177e4SLinus Torvalds return result; 3311da177e4SLinus Torvalds 3321da177e4SLinus Torvalds /* This part : To be implemented .... 3331da177e4SLinus Torvalds Required only for writing, not required for READ-ONLY. 3341da177e4SLinus Torvalds ufs2: 3351da177e4SLinus Torvalds 3361da177e4SLinus Torvalds u2_block = ufs_fragstoblks(fragment); 3371da177e4SLinus Torvalds u2_blockoff = ufs_fragnum(fragment); 3381da177e4SLinus Torvalds p = ufsi->i_u1.u2_i_data + block; 3391da177e4SLinus Torvalds goal = 0; 3401da177e4SLinus Torvalds 3411da177e4SLinus Torvalds repeat2: 3421da177e4SLinus Torvalds tmp = fs32_to_cpu(sb, *p); 3431da177e4SLinus Torvalds lastfrag = ufsi->i_lastfrag; 3441da177e4SLinus Torvalds 3451da177e4SLinus Torvalds */ 3461da177e4SLinus Torvalds } 3471da177e4SLinus Torvalds 348022a6dc5SEvgeniy Dushistov /** 349022a6dc5SEvgeniy Dushistov * ufs_inode_getblock() - allocate new block 350edc023caSFabian Frederick * @inode: pointer to inode 351edc023caSFabian Frederick * @bh: pointer to block which hold "pointer" to new allocated block 352edc023caSFabian Frederick * @fragment: number of `fragment' which hold pointer 353022a6dc5SEvgeniy Dushistov * to new allocated block 354edc023caSFabian Frederick * @new_fragment: number of new allocated fragment 355022a6dc5SEvgeniy Dushistov * (block will hold this fragment and also uspi->s_fpb-1) 356edc023caSFabian Frederick * @err: see ufs_inode_getfrag() 357edc023caSFabian Frederick * @phys: see ufs_inode_getfrag() 358edc023caSFabian Frederick * @new: see ufs_inode_getfrag() 359edc023caSFabian Frederick * @locked_page: see ufs_inode_getfrag() 360022a6dc5SEvgeniy Dushistov */ 361022a6dc5SEvgeniy Dushistov static struct buffer_head * 362022a6dc5SEvgeniy Dushistov ufs_inode_getblock(struct inode *inode, struct buffer_head *bh, 36354fb996aSEvgeniy Dushistov u64 fragment, sector_t new_fragment, int *err, 3646ef4d6bfSEvgeniy Dushistov long *phys, int *new, struct page *locked_page) 3651da177e4SLinus Torvalds { 366022a6dc5SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 367022a6dc5SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 3681da177e4SLinus Torvalds struct buffer_head * result; 36954fb996aSEvgeniy Dushistov unsigned blockoff; 37054fb996aSEvgeniy Dushistov u64 tmp, goal, block; 37154fb996aSEvgeniy Dushistov void *p; 3721da177e4SLinus Torvalds 3731da177e4SLinus Torvalds block = ufs_fragstoblks (fragment); 3741da177e4SLinus Torvalds blockoff = ufs_fragnum (fragment); 3751da177e4SLinus Torvalds 37654fb996aSEvgeniy Dushistov UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, metadata %d\n", 37754fb996aSEvgeniy Dushistov inode->i_ino, (unsigned long long)fragment, 37854fb996aSEvgeniy Dushistov (unsigned long long)new_fragment, !phys); 3791da177e4SLinus Torvalds 3801da177e4SLinus Torvalds result = NULL; 3811da177e4SLinus Torvalds if (!bh) 3821da177e4SLinus Torvalds goto out; 3831da177e4SLinus Torvalds if (!buffer_uptodate(bh)) { 3841da177e4SLinus Torvalds ll_rw_block (READ, 1, &bh); 3851da177e4SLinus Torvalds wait_on_buffer (bh); 3861da177e4SLinus Torvalds if (!buffer_uptodate(bh)) 3871da177e4SLinus Torvalds goto out; 3881da177e4SLinus Torvalds } 38954fb996aSEvgeniy Dushistov if (uspi->fs_magic == UFS2_MAGIC) 39054fb996aSEvgeniy Dushistov p = (__fs64 *)bh->b_data + block; 39154fb996aSEvgeniy Dushistov else 3921da177e4SLinus Torvalds p = (__fs32 *)bh->b_data + block; 3935a39c255SAl Viro 39454fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, p); 3951da177e4SLinus Torvalds if (tmp) { 3965a39c255SAl Viro if (!phys) 3971da177e4SLinus Torvalds result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 3985a39c255SAl Viro else 3994b25a37eSEvgeniy Dushistov *phys = uspi->s_sbbase + tmp + blockoff; 4001da177e4SLinus Torvalds goto out; 4011da177e4SLinus Torvalds } 4021da177e4SLinus Torvalds 40354fb996aSEvgeniy Dushistov if (block && (uspi->fs_magic == UFS2_MAGIC ? 40454fb996aSEvgeniy Dushistov (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[block-1])) : 40554fb996aSEvgeniy Dushistov (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[block-1])))) 4061da177e4SLinus Torvalds goal = tmp + uspi->s_fpb; 4071da177e4SLinus Torvalds else 4081da177e4SLinus Torvalds goal = bh->b_blocknr + uspi->s_fpb; 4096ef4d6bfSEvgeniy Dushistov tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal, 4106ef4d6bfSEvgeniy Dushistov uspi->s_fpb, err, locked_page); 4115a39c255SAl Viro if (!tmp) 4121da177e4SLinus Torvalds goto out; 413c9a27b5dSEvgeniy Dushistov 414022a6dc5SEvgeniy Dushistov if (!phys) { 4154b25a37eSEvgeniy Dushistov result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); 4161da177e4SLinus Torvalds } else { 4174b25a37eSEvgeniy Dushistov *phys = uspi->s_sbbase + tmp + blockoff; 4181da177e4SLinus Torvalds *new = 1; 4191da177e4SLinus Torvalds } 4201da177e4SLinus Torvalds 4211da177e4SLinus Torvalds mark_buffer_dirty(bh); 4221da177e4SLinus Torvalds if (IS_SYNC(inode)) 4231da177e4SLinus Torvalds sync_dirty_buffer(bh); 4241da177e4SLinus Torvalds inode->i_ctime = CURRENT_TIME_SEC; 4251da177e4SLinus Torvalds mark_inode_dirty(inode); 4261da177e4SLinus Torvalds out: 4271da177e4SLinus Torvalds brelse (bh); 428abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 4291da177e4SLinus Torvalds return result; 4301da177e4SLinus Torvalds } 4311da177e4SLinus Torvalds 432022a6dc5SEvgeniy Dushistov /** 4337422caa5SAlessio Igor Bogani * ufs_getfrag_block() - `get_block_t' function, interface between UFS and 434022a6dc5SEvgeniy Dushistov * readpage, writepage and so on 4351da177e4SLinus Torvalds */ 4361da177e4SLinus Torvalds 437010d331fSAl Viro static int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create) 4381da177e4SLinus Torvalds { 4391da177e4SLinus Torvalds struct super_block * sb = inode->i_sb; 440788257d6SArnd Bergmann struct ufs_sb_info * sbi = UFS_SB(sb); 441788257d6SArnd Bergmann struct ufs_sb_private_info * uspi = sbi->s_uspi; 4421da177e4SLinus Torvalds struct buffer_head * bh; 4431da177e4SLinus Torvalds int ret, err, new; 4444b7068c8SAl Viro unsigned offsets[4]; 4454b7068c8SAl Viro int depth = ufs_block_to_path(inode, fragment >> uspi->s_fpbshift, offsets); 4461da177e4SLinus Torvalds unsigned long ptr,phys; 4471da177e4SLinus Torvalds u64 phys64 = 0; 4481da177e4SLinus Torvalds 4491da177e4SLinus Torvalds if (!create) { 4504b7068c8SAl Viro phys64 = ufs_frag_map(inode, offsets, depth); 4514b7068c8SAl Viro if (phys64) { 4524b7068c8SAl Viro phys64 += fragment & uspi->s_fpbmask; 4531da177e4SLinus Torvalds map_bh(bh_result, sb, phys64); 4544b7068c8SAl Viro } 4551da177e4SLinus Torvalds return 0; 4561da177e4SLinus Torvalds } 4571da177e4SLinus Torvalds 4581da177e4SLinus Torvalds /* This code entered only while writing ....? */ 4591da177e4SLinus Torvalds 4601da177e4SLinus Torvalds err = -EIO; 4611da177e4SLinus Torvalds new = 0; 4621da177e4SLinus Torvalds ret = 0; 4631da177e4SLinus Torvalds bh = NULL; 4641da177e4SLinus Torvalds 465724bb09fSAl Viro mutex_lock(&UFS_I(inode)->truncate_mutex); 4661da177e4SLinus Torvalds 467abf5d15fSEvgeniy Dushistov UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment); 4681da177e4SLinus Torvalds if (fragment > 4691da177e4SLinus Torvalds ((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb) 4701da177e4SLinus Torvalds << uspi->s_fpbshift)) 4711da177e4SLinus Torvalds goto abort_too_big; 4721da177e4SLinus Torvalds 4731da177e4SLinus Torvalds err = 0; 4741da177e4SLinus Torvalds ptr = fragment; 4751da177e4SLinus Torvalds 4761da177e4SLinus Torvalds /* 4771da177e4SLinus Torvalds * ok, these macros clean the logic up a bit and make 4781da177e4SLinus Torvalds * it much more readable: 4791da177e4SLinus Torvalds */ 4801da177e4SLinus Torvalds #define GET_INODE_DATABLOCK(x) \ 481a685e26fSEvgeniy Dushistov ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new,\ 482a685e26fSEvgeniy Dushistov bh_result->b_page) 4831da177e4SLinus Torvalds #define GET_INODE_PTR(x) \ 484a685e26fSEvgeniy Dushistov ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL,\ 485a685e26fSEvgeniy Dushistov bh_result->b_page) 4861da177e4SLinus Torvalds #define GET_INDIRECT_DATABLOCK(x) \ 487022a6dc5SEvgeniy Dushistov ufs_inode_getblock(inode, bh, x, fragment, \ 488d63b7090SEvgeniy Dushistov &err, &phys, &new, bh_result->b_page) 4891da177e4SLinus Torvalds #define GET_INDIRECT_PTR(x) \ 490022a6dc5SEvgeniy Dushistov ufs_inode_getblock(inode, bh, x, fragment, \ 491d63b7090SEvgeniy Dushistov &err, NULL, NULL, NULL) 4921da177e4SLinus Torvalds 4931da177e4SLinus Torvalds if (ptr < UFS_NDIR_FRAGMENT) { 4941da177e4SLinus Torvalds bh = GET_INODE_DATABLOCK(ptr); 4951da177e4SLinus Torvalds goto out; 4961da177e4SLinus Torvalds } 4971da177e4SLinus Torvalds ptr -= UFS_NDIR_FRAGMENT; 4981da177e4SLinus Torvalds if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) { 4991da177e4SLinus Torvalds bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift)); 5001da177e4SLinus Torvalds goto get_indirect; 5011da177e4SLinus Torvalds } 5021da177e4SLinus Torvalds ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift); 5031da177e4SLinus Torvalds if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) { 5041da177e4SLinus Torvalds bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift)); 5051da177e4SLinus Torvalds goto get_double; 5061da177e4SLinus Torvalds } 5071da177e4SLinus Torvalds ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift); 5081da177e4SLinus Torvalds bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift)); 5091da177e4SLinus Torvalds bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask); 5101da177e4SLinus Torvalds get_double: 5111da177e4SLinus Torvalds bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask); 5121da177e4SLinus Torvalds get_indirect: 5131da177e4SLinus Torvalds bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask); 5141da177e4SLinus Torvalds 5151da177e4SLinus Torvalds #undef GET_INODE_DATABLOCK 5161da177e4SLinus Torvalds #undef GET_INODE_PTR 5171da177e4SLinus Torvalds #undef GET_INDIRECT_DATABLOCK 5181da177e4SLinus Torvalds #undef GET_INDIRECT_PTR 5191da177e4SLinus Torvalds 5201da177e4SLinus Torvalds out: 5211da177e4SLinus Torvalds if (err) 5221da177e4SLinus Torvalds goto abort; 5231da177e4SLinus Torvalds if (new) 5241da177e4SLinus Torvalds set_buffer_new(bh_result); 5251da177e4SLinus Torvalds map_bh(bh_result, sb, phys); 5261da177e4SLinus Torvalds abort: 527724bb09fSAl Viro mutex_unlock(&UFS_I(inode)->truncate_mutex); 528788257d6SArnd Bergmann 5291da177e4SLinus Torvalds return err; 5301da177e4SLinus Torvalds 5311da177e4SLinus Torvalds abort_too_big: 5321da177e4SLinus Torvalds ufs_warning(sb, "ufs_get_block", "block > big"); 5331da177e4SLinus Torvalds goto abort; 5341da177e4SLinus Torvalds } 5351da177e4SLinus Torvalds 5361da177e4SLinus Torvalds static int ufs_writepage(struct page *page, struct writeback_control *wbc) 5371da177e4SLinus Torvalds { 5381da177e4SLinus Torvalds return block_write_full_page(page,ufs_getfrag_block,wbc); 5391da177e4SLinus Torvalds } 54082b9d1d0SNick Piggin 5411da177e4SLinus Torvalds static int ufs_readpage(struct file *file, struct page *page) 5421da177e4SLinus Torvalds { 5431da177e4SLinus Torvalds return block_read_full_page(page,ufs_getfrag_block); 5441da177e4SLinus Torvalds } 54582b9d1d0SNick Piggin 546f4e420dcSChristoph Hellwig int ufs_prepare_chunk(struct page *page, loff_t pos, unsigned len) 5471da177e4SLinus Torvalds { 5486e1db88dSChristoph Hellwig return __block_write_begin(page, pos, len, ufs_getfrag_block); 5491da177e4SLinus Torvalds } 55082b9d1d0SNick Piggin 551010d331fSAl Viro static void ufs_truncate_blocks(struct inode *); 552010d331fSAl Viro 55383f6e371SMarco Stornelli static void ufs_write_failed(struct address_space *mapping, loff_t to) 55483f6e371SMarco Stornelli { 55583f6e371SMarco Stornelli struct inode *inode = mapping->host; 55683f6e371SMarco Stornelli 5573b7a3a05SAl Viro if (to > inode->i_size) { 5587caef267SKirill A. Shutemov truncate_pagecache(inode, inode->i_size); 5593b7a3a05SAl Viro ufs_truncate_blocks(inode); 5603b7a3a05SAl Viro } 56183f6e371SMarco Stornelli } 56283f6e371SMarco Stornelli 56382b9d1d0SNick Piggin static int ufs_write_begin(struct file *file, struct address_space *mapping, 56482b9d1d0SNick Piggin loff_t pos, unsigned len, unsigned flags, 56582b9d1d0SNick Piggin struct page **pagep, void **fsdata) 56682b9d1d0SNick Piggin { 567155130a4SChristoph Hellwig int ret; 568155130a4SChristoph Hellwig 569155130a4SChristoph Hellwig ret = block_write_begin(mapping, pos, len, flags, pagep, 570f4e420dcSChristoph Hellwig ufs_getfrag_block); 57183f6e371SMarco Stornelli if (unlikely(ret)) 57283f6e371SMarco Stornelli ufs_write_failed(mapping, pos + len); 573155130a4SChristoph Hellwig 574155130a4SChristoph Hellwig return ret; 57582b9d1d0SNick Piggin } 57682b9d1d0SNick Piggin 5773b7a3a05SAl Viro static int ufs_write_end(struct file *file, struct address_space *mapping, 5783b7a3a05SAl Viro loff_t pos, unsigned len, unsigned copied, 5793b7a3a05SAl Viro struct page *page, void *fsdata) 5803b7a3a05SAl Viro { 5813b7a3a05SAl Viro int ret; 5823b7a3a05SAl Viro 5833b7a3a05SAl Viro ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata); 5843b7a3a05SAl Viro if (ret < len) 5853b7a3a05SAl Viro ufs_write_failed(mapping, pos + len); 5863b7a3a05SAl Viro return ret; 5873b7a3a05SAl Viro } 5883b7a3a05SAl Viro 5891da177e4SLinus Torvalds static sector_t ufs_bmap(struct address_space *mapping, sector_t block) 5901da177e4SLinus Torvalds { 5911da177e4SLinus Torvalds return generic_block_bmap(mapping,block,ufs_getfrag_block); 5921da177e4SLinus Torvalds } 59382b9d1d0SNick Piggin 594f5e54d6eSChristoph Hellwig const struct address_space_operations ufs_aops = { 5951da177e4SLinus Torvalds .readpage = ufs_readpage, 5961da177e4SLinus Torvalds .writepage = ufs_writepage, 59782b9d1d0SNick Piggin .write_begin = ufs_write_begin, 5983b7a3a05SAl Viro .write_end = ufs_write_end, 5991da177e4SLinus Torvalds .bmap = ufs_bmap 6001da177e4SLinus Torvalds }; 6011da177e4SLinus Torvalds 602826843a3SEvgeniy Dushistov static void ufs_set_inode_ops(struct inode *inode) 603826843a3SEvgeniy Dushistov { 604826843a3SEvgeniy Dushistov if (S_ISREG(inode->i_mode)) { 605826843a3SEvgeniy Dushistov inode->i_op = &ufs_file_inode_operations; 606826843a3SEvgeniy Dushistov inode->i_fop = &ufs_file_operations; 607826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 608826843a3SEvgeniy Dushistov } else if (S_ISDIR(inode->i_mode)) { 609826843a3SEvgeniy Dushistov inode->i_op = &ufs_dir_inode_operations; 610826843a3SEvgeniy Dushistov inode->i_fop = &ufs_dir_operations; 611826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 612826843a3SEvgeniy Dushistov } else if (S_ISLNK(inode->i_mode)) { 6134b8061a6SAl Viro if (!inode->i_blocks) { 614826843a3SEvgeniy Dushistov inode->i_op = &ufs_fast_symlink_inode_operations; 6154b8061a6SAl Viro inode->i_link = (char *)UFS_I(inode)->i_u1.i_symlink; 6164b8061a6SAl Viro } else { 617311b9549SDmitry Monakhov inode->i_op = &ufs_symlink_inode_operations; 618826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 619826843a3SEvgeniy Dushistov } 620826843a3SEvgeniy Dushistov } else 621826843a3SEvgeniy Dushistov init_special_inode(inode, inode->i_mode, 622826843a3SEvgeniy Dushistov ufs_get_inode_dev(inode->i_sb, UFS_I(inode))); 623826843a3SEvgeniy Dushistov } 624826843a3SEvgeniy Dushistov 62507a0cfecSEvgeniy Dushistov static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode) 6261da177e4SLinus Torvalds { 6271da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 62805f225dcSEvgeniy Dushistov struct super_block *sb = inode->i_sb; 6296a9a06d9SAl Viro umode_t mode; 6301da177e4SLinus Torvalds 6311da177e4SLinus Torvalds /* 6321da177e4SLinus Torvalds * Copy data to the in-core inode. 6331da177e4SLinus Torvalds */ 6341da177e4SLinus Torvalds inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode); 635bfe86848SMiklos Szeredi set_nlink(inode, fs16_to_cpu(sb, ufs_inode->ui_nlink)); 63607a0cfecSEvgeniy Dushistov if (inode->i_nlink == 0) { 6371da177e4SLinus Torvalds ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 63807a0cfecSEvgeniy Dushistov return -1; 63907a0cfecSEvgeniy Dushistov } 6401da177e4SLinus Torvalds 6411da177e4SLinus Torvalds /* 6421da177e4SLinus Torvalds * Linux now has 32-bit uid and gid, so we can support EFT. 6431da177e4SLinus Torvalds */ 64472235465SEric W. Biederman i_uid_write(inode, ufs_get_inode_uid(sb, ufs_inode)); 64572235465SEric W. Biederman i_gid_write(inode, ufs_get_inode_gid(sb, ufs_inode)); 6461da177e4SLinus Torvalds 6471da177e4SLinus Torvalds inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); 6481da177e4SLinus Torvalds inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); 6491da177e4SLinus Torvalds inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); 6501da177e4SLinus Torvalds inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); 6511da177e4SLinus Torvalds inode->i_mtime.tv_nsec = 0; 6521da177e4SLinus Torvalds inode->i_atime.tv_nsec = 0; 6531da177e4SLinus Torvalds inode->i_ctime.tv_nsec = 0; 6541da177e4SLinus Torvalds inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); 6553313e292SEvgeniy Dushistov inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen); 6561da177e4SLinus Torvalds ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); 6571da177e4SLinus Torvalds ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 6581da177e4SLinus Torvalds ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 65905f225dcSEvgeniy Dushistov 6601da177e4SLinus Torvalds 6611da177e4SLinus Torvalds if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 662f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr, 663f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 664dd187a26SEvgeniy Dushistov } else { 665f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink, 666b12903f1SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink) - 1); 667b12903f1SDuane Griffin ufsi->i_u1.i_symlink[sizeof(ufs_inode->ui_u2.ui_symlink) - 1] = 0; 6681da177e4SLinus Torvalds } 66907a0cfecSEvgeniy Dushistov return 0; 67005f225dcSEvgeniy Dushistov } 6711da177e4SLinus Torvalds 67207a0cfecSEvgeniy Dushistov static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode) 67305f225dcSEvgeniy Dushistov { 67405f225dcSEvgeniy Dushistov struct ufs_inode_info *ufsi = UFS_I(inode); 67505f225dcSEvgeniy Dushistov struct super_block *sb = inode->i_sb; 6766a9a06d9SAl Viro umode_t mode; 6771da177e4SLinus Torvalds 678abf5d15fSEvgeniy Dushistov UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino); 6791da177e4SLinus Torvalds /* 6801da177e4SLinus Torvalds * Copy data to the in-core inode. 6811da177e4SLinus Torvalds */ 6821da177e4SLinus Torvalds inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode); 683bfe86848SMiklos Szeredi set_nlink(inode, fs16_to_cpu(sb, ufs2_inode->ui_nlink)); 68407a0cfecSEvgeniy Dushistov if (inode->i_nlink == 0) { 6851da177e4SLinus Torvalds ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 68607a0cfecSEvgeniy Dushistov return -1; 68707a0cfecSEvgeniy Dushistov } 6881da177e4SLinus Torvalds 6891da177e4SLinus Torvalds /* 6901da177e4SLinus Torvalds * Linux now has 32-bit uid and gid, so we can support EFT. 6911da177e4SLinus Torvalds */ 69272235465SEric W. Biederman i_uid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_uid)); 69372235465SEric W. Biederman i_gid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_gid)); 6941da177e4SLinus Torvalds 6951da177e4SLinus Torvalds inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size); 6962189850fSEvgeniy Dushistov inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime); 6972189850fSEvgeniy Dushistov inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime); 6982189850fSEvgeniy Dushistov inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime); 6992189850fSEvgeniy Dushistov inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec); 7002189850fSEvgeniy Dushistov inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec); 7012189850fSEvgeniy Dushistov inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec); 7021da177e4SLinus Torvalds inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks); 7033313e292SEvgeniy Dushistov inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen); 7041da177e4SLinus Torvalds ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags); 7051da177e4SLinus Torvalds /* 7061da177e4SLinus Torvalds ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 7071da177e4SLinus Torvalds ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 7081da177e4SLinus Torvalds */ 7091da177e4SLinus Torvalds 7101da177e4SLinus Torvalds if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 711f33219b7SDuane Griffin memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr, 712f33219b7SDuane Griffin sizeof(ufs2_inode->ui_u2.ui_addr)); 71305f225dcSEvgeniy Dushistov } else { 714f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink, 715b12903f1SDuane Griffin sizeof(ufs2_inode->ui_u2.ui_symlink) - 1); 716b12903f1SDuane Griffin ufsi->i_u1.i_symlink[sizeof(ufs2_inode->ui_u2.ui_symlink) - 1] = 0; 7171da177e4SLinus Torvalds } 71807a0cfecSEvgeniy Dushistov return 0; 71905f225dcSEvgeniy Dushistov } 72005f225dcSEvgeniy Dushistov 721b55c460dSDavid Howells struct inode *ufs_iget(struct super_block *sb, unsigned long ino) 72205f225dcSEvgeniy Dushistov { 723b55c460dSDavid Howells struct ufs_inode_info *ufsi; 724b55c460dSDavid Howells struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 72505f225dcSEvgeniy Dushistov struct buffer_head * bh; 726b55c460dSDavid Howells struct inode *inode; 72707a0cfecSEvgeniy Dushistov int err; 72805f225dcSEvgeniy Dushistov 729b55c460dSDavid Howells UFSD("ENTER, ino %lu\n", ino); 73005f225dcSEvgeniy Dushistov 731b55c460dSDavid Howells if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) { 73205f225dcSEvgeniy Dushistov ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n", 733b55c460dSDavid Howells ino); 734b55c460dSDavid Howells return ERR_PTR(-EIO); 73505f225dcSEvgeniy Dushistov } 73605f225dcSEvgeniy Dushistov 737b55c460dSDavid Howells inode = iget_locked(sb, ino); 738b55c460dSDavid Howells if (!inode) 739b55c460dSDavid Howells return ERR_PTR(-ENOMEM); 740b55c460dSDavid Howells if (!(inode->i_state & I_NEW)) 741b55c460dSDavid Howells return inode; 742b55c460dSDavid Howells 743b55c460dSDavid Howells ufsi = UFS_I(inode); 744b55c460dSDavid Howells 74505f225dcSEvgeniy Dushistov bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino)); 74605f225dcSEvgeniy Dushistov if (!bh) { 74705f225dcSEvgeniy Dushistov ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n", 74805f225dcSEvgeniy Dushistov inode->i_ino); 74905f225dcSEvgeniy Dushistov goto bad_inode; 75005f225dcSEvgeniy Dushistov } 75105f225dcSEvgeniy Dushistov if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { 75205f225dcSEvgeniy Dushistov struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 75305f225dcSEvgeniy Dushistov 75407a0cfecSEvgeniy Dushistov err = ufs2_read_inode(inode, 75505f225dcSEvgeniy Dushistov ufs2_inode + ufs_inotofsbo(inode->i_ino)); 75605f225dcSEvgeniy Dushistov } else { 75705f225dcSEvgeniy Dushistov struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data; 75805f225dcSEvgeniy Dushistov 75907a0cfecSEvgeniy Dushistov err = ufs1_read_inode(inode, 76007a0cfecSEvgeniy Dushistov ufs_inode + ufs_inotofsbo(inode->i_ino)); 76105f225dcSEvgeniy Dushistov } 76205f225dcSEvgeniy Dushistov 76307a0cfecSEvgeniy Dushistov if (err) 76407a0cfecSEvgeniy Dushistov goto bad_inode; 76505f225dcSEvgeniy Dushistov inode->i_version++; 76605f225dcSEvgeniy Dushistov ufsi->i_lastfrag = 76705f225dcSEvgeniy Dushistov (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; 76805f225dcSEvgeniy Dushistov ufsi->i_dir_start_lookup = 0; 7691da177e4SLinus Torvalds ufsi->i_osync = 0; 7701da177e4SLinus Torvalds 771826843a3SEvgeniy Dushistov ufs_set_inode_ops(inode); 7721da177e4SLinus Torvalds 7731da177e4SLinus Torvalds brelse(bh); 7741da177e4SLinus Torvalds 775abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 776b55c460dSDavid Howells unlock_new_inode(inode); 777b55c460dSDavid Howells return inode; 77805f225dcSEvgeniy Dushistov 77905f225dcSEvgeniy Dushistov bad_inode: 780b55c460dSDavid Howells iget_failed(inode); 781b55c460dSDavid Howells return ERR_PTR(-EIO); 7821da177e4SLinus Torvalds } 7831da177e4SLinus Torvalds 7843313e292SEvgeniy Dushistov static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode) 7851da177e4SLinus Torvalds { 7863313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 7871da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 7881da177e4SLinus Torvalds 7891da177e4SLinus Torvalds ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 7901da177e4SLinus Torvalds ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 7911da177e4SLinus Torvalds 79272235465SEric W. Biederman ufs_set_inode_uid(sb, ufs_inode, i_uid_read(inode)); 79372235465SEric W. Biederman ufs_set_inode_gid(sb, ufs_inode, i_gid_read(inode)); 7941da177e4SLinus Torvalds 7951da177e4SLinus Torvalds ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 7961da177e4SLinus Torvalds ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec); 7971da177e4SLinus Torvalds ufs_inode->ui_atime.tv_usec = 0; 7981da177e4SLinus Torvalds ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec); 7991da177e4SLinus Torvalds ufs_inode->ui_ctime.tv_usec = 0; 8001da177e4SLinus Torvalds ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec); 8011da177e4SLinus Torvalds ufs_inode->ui_mtime.tv_usec = 0; 8021da177e4SLinus Torvalds ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks); 8031da177e4SLinus Torvalds ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 8043313e292SEvgeniy Dushistov ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); 8051da177e4SLinus Torvalds 8063313e292SEvgeniy Dushistov if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) { 8071da177e4SLinus Torvalds ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow); 8081da177e4SLinus Torvalds ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag); 8091da177e4SLinus Torvalds } 8101da177e4SLinus Torvalds 8111da177e4SLinus Torvalds if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 8121da177e4SLinus Torvalds /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 8131da177e4SLinus Torvalds ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0]; 8141da177e4SLinus Torvalds } else if (inode->i_blocks) { 815f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data, 816f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 8171da177e4SLinus Torvalds } 8181da177e4SLinus Torvalds else { 819f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, 820f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink)); 8211da177e4SLinus Torvalds } 8221da177e4SLinus Torvalds 8231da177e4SLinus Torvalds if (!inode->i_nlink) 8241da177e4SLinus Torvalds memset (ufs_inode, 0, sizeof(struct ufs_inode)); 8253313e292SEvgeniy Dushistov } 8263313e292SEvgeniy Dushistov 8273313e292SEvgeniy Dushistov static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode) 8283313e292SEvgeniy Dushistov { 8293313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 8303313e292SEvgeniy Dushistov struct ufs_inode_info *ufsi = UFS_I(inode); 8313313e292SEvgeniy Dushistov 8323313e292SEvgeniy Dushistov UFSD("ENTER\n"); 8333313e292SEvgeniy Dushistov ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 8343313e292SEvgeniy Dushistov ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 8353313e292SEvgeniy Dushistov 83672235465SEric W. Biederman ufs_inode->ui_uid = cpu_to_fs32(sb, i_uid_read(inode)); 83772235465SEric W. Biederman ufs_inode->ui_gid = cpu_to_fs32(sb, i_gid_read(inode)); 8383313e292SEvgeniy Dushistov 8393313e292SEvgeniy Dushistov ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 8402189850fSEvgeniy Dushistov ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec); 8412189850fSEvgeniy Dushistov ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec); 8422189850fSEvgeniy Dushistov ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec); 8432189850fSEvgeniy Dushistov ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec); 8442189850fSEvgeniy Dushistov ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec); 8452189850fSEvgeniy Dushistov ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec); 8463313e292SEvgeniy Dushistov 8473313e292SEvgeniy Dushistov ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks); 8483313e292SEvgeniy Dushistov ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 8493313e292SEvgeniy Dushistov ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); 8503313e292SEvgeniy Dushistov 8513313e292SEvgeniy Dushistov if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 8523313e292SEvgeniy Dushistov /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 8533313e292SEvgeniy Dushistov ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0]; 8543313e292SEvgeniy Dushistov } else if (inode->i_blocks) { 855f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data, 856f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 8573313e292SEvgeniy Dushistov } else { 858f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, 859f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink)); 8603313e292SEvgeniy Dushistov } 8613313e292SEvgeniy Dushistov 8623313e292SEvgeniy Dushistov if (!inode->i_nlink) 8633313e292SEvgeniy Dushistov memset (ufs_inode, 0, sizeof(struct ufs2_inode)); 8643313e292SEvgeniy Dushistov UFSD("EXIT\n"); 8653313e292SEvgeniy Dushistov } 8663313e292SEvgeniy Dushistov 8673313e292SEvgeniy Dushistov static int ufs_update_inode(struct inode * inode, int do_sync) 8683313e292SEvgeniy Dushistov { 8693313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 8703313e292SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 8713313e292SEvgeniy Dushistov struct buffer_head * bh; 8723313e292SEvgeniy Dushistov 8733313e292SEvgeniy Dushistov UFSD("ENTER, ino %lu\n", inode->i_ino); 8743313e292SEvgeniy Dushistov 8753313e292SEvgeniy Dushistov if (inode->i_ino < UFS_ROOTINO || 8763313e292SEvgeniy Dushistov inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { 8773313e292SEvgeniy Dushistov ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); 8783313e292SEvgeniy Dushistov return -1; 8793313e292SEvgeniy Dushistov } 8803313e292SEvgeniy Dushistov 8813313e292SEvgeniy Dushistov bh = sb_bread(sb, ufs_inotofsba(inode->i_ino)); 8823313e292SEvgeniy Dushistov if (!bh) { 8833313e292SEvgeniy Dushistov ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); 8843313e292SEvgeniy Dushistov return -1; 8853313e292SEvgeniy Dushistov } 8863313e292SEvgeniy Dushistov if (uspi->fs_magic == UFS2_MAGIC) { 8873313e292SEvgeniy Dushistov struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 8883313e292SEvgeniy Dushistov 8893313e292SEvgeniy Dushistov ufs2_update_inode(inode, 8903313e292SEvgeniy Dushistov ufs2_inode + ufs_inotofsbo(inode->i_ino)); 8913313e292SEvgeniy Dushistov } else { 8923313e292SEvgeniy Dushistov struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data; 8933313e292SEvgeniy Dushistov 8943313e292SEvgeniy Dushistov ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino)); 8953313e292SEvgeniy Dushistov } 8961da177e4SLinus Torvalds 8971da177e4SLinus Torvalds mark_buffer_dirty(bh); 8981da177e4SLinus Torvalds if (do_sync) 8991da177e4SLinus Torvalds sync_dirty_buffer(bh); 9001da177e4SLinus Torvalds brelse (bh); 9011da177e4SLinus Torvalds 902abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 9031da177e4SLinus Torvalds return 0; 9041da177e4SLinus Torvalds } 9051da177e4SLinus Torvalds 906a9185b41SChristoph Hellwig int ufs_write_inode(struct inode *inode, struct writeback_control *wbc) 9071da177e4SLinus Torvalds { 908f3e0f3daSAl Viro return ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL); 9091da177e4SLinus Torvalds } 9101da177e4SLinus Torvalds 9111da177e4SLinus Torvalds int ufs_sync_inode (struct inode *inode) 9121da177e4SLinus Torvalds { 9131da177e4SLinus Torvalds return ufs_update_inode (inode, 1); 9141da177e4SLinus Torvalds } 9151da177e4SLinus Torvalds 91658e8268cSAl Viro void ufs_evict_inode(struct inode * inode) 9171da177e4SLinus Torvalds { 91858e8268cSAl Viro int want_delete = 0; 91958e8268cSAl Viro 92058e8268cSAl Viro if (!inode->i_nlink && !is_bad_inode(inode)) 92158e8268cSAl Viro want_delete = 1; 92210e5dce0SEvgeniy Dushistov 92391b0abe3SJohannes Weiner truncate_inode_pages_final(&inode->i_data); 92458e8268cSAl Viro if (want_delete) { 9251da177e4SLinus Torvalds inode->i_size = 0; 926d622f167SAl Viro if (inode->i_blocks) 927d622f167SAl Viro ufs_truncate_blocks(inode); 92858e8268cSAl Viro } 92958e8268cSAl Viro 93058e8268cSAl Viro invalidate_inode_buffers(inode); 931dbd5768fSJan Kara clear_inode(inode); 93258e8268cSAl Viro 933f3e0f3daSAl Viro if (want_delete) 9341da177e4SLinus Torvalds ufs_free_inode(inode); 9351da177e4SLinus Torvalds } 936010d331fSAl Viro 937a138b4b6SAl Viro struct to_free { 938a138b4b6SAl Viro struct inode *inode; 939a138b4b6SAl Viro u64 to; 940a138b4b6SAl Viro unsigned count; 941a138b4b6SAl Viro }; 942a138b4b6SAl Viro 943a138b4b6SAl Viro static inline void free_data(struct to_free *ctx, u64 from, unsigned count) 944a138b4b6SAl Viro { 945a138b4b6SAl Viro if (ctx->count && ctx->to != from) { 946a138b4b6SAl Viro ufs_free_blocks(ctx->inode, ctx->to - ctx->count, ctx->count); 947a138b4b6SAl Viro ctx->count = 0; 948a138b4b6SAl Viro } 949a138b4b6SAl Viro ctx->count += count; 950a138b4b6SAl Viro ctx->to = from + count; 951a138b4b6SAl Viro } 952a138b4b6SAl Viro 953010d331fSAl Viro #define DIRECT_BLOCK ((inode->i_size + uspi->s_bsize - 1) >> uspi->s_bshift) 954010d331fSAl Viro #define DIRECT_FRAGMENT ((inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift) 955010d331fSAl Viro 956010d331fSAl Viro static void ufs_trunc_direct(struct inode *inode) 957010d331fSAl Viro { 958010d331fSAl Viro struct ufs_inode_info *ufsi = UFS_I(inode); 959010d331fSAl Viro struct super_block * sb; 960010d331fSAl Viro struct ufs_sb_private_info * uspi; 961010d331fSAl Viro void *p; 962010d331fSAl Viro u64 frag1, frag2, frag3, frag4, block1, block2; 963a138b4b6SAl Viro struct to_free ctx = {.inode = inode}; 964010d331fSAl Viro unsigned i, tmp; 965010d331fSAl Viro 966010d331fSAl Viro UFSD("ENTER: ino %lu\n", inode->i_ino); 967010d331fSAl Viro 968010d331fSAl Viro sb = inode->i_sb; 969010d331fSAl Viro uspi = UFS_SB(sb)->s_uspi; 970010d331fSAl Viro 971010d331fSAl Viro frag1 = DIRECT_FRAGMENT; 972010d331fSAl Viro frag4 = min_t(u64, UFS_NDIR_FRAGMENT, ufsi->i_lastfrag); 973010d331fSAl Viro frag2 = ((frag1 & uspi->s_fpbmask) ? ((frag1 | uspi->s_fpbmask) + 1) : frag1); 974010d331fSAl Viro frag3 = frag4 & ~uspi->s_fpbmask; 975010d331fSAl Viro block1 = block2 = 0; 976010d331fSAl Viro if (frag2 > frag3) { 977010d331fSAl Viro frag2 = frag4; 978010d331fSAl Viro frag3 = frag4 = 0; 979010d331fSAl Viro } else if (frag2 < frag3) { 980010d331fSAl Viro block1 = ufs_fragstoblks (frag2); 981010d331fSAl Viro block2 = ufs_fragstoblks (frag3); 982010d331fSAl Viro } 983010d331fSAl Viro 984010d331fSAl Viro UFSD("ino %lu, frag1 %llu, frag2 %llu, block1 %llu, block2 %llu," 985010d331fSAl Viro " frag3 %llu, frag4 %llu\n", inode->i_ino, 986010d331fSAl Viro (unsigned long long)frag1, (unsigned long long)frag2, 987010d331fSAl Viro (unsigned long long)block1, (unsigned long long)block2, 988010d331fSAl Viro (unsigned long long)frag3, (unsigned long long)frag4); 989010d331fSAl Viro 990010d331fSAl Viro if (frag1 >= frag2) 991010d331fSAl Viro goto next1; 992010d331fSAl Viro 993010d331fSAl Viro /* 994010d331fSAl Viro * Free first free fragments 995010d331fSAl Viro */ 996010d331fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag1)); 997010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 998010d331fSAl Viro if (!tmp ) 999010d331fSAl Viro ufs_panic (sb, "ufs_trunc_direct", "internal error"); 1000010d331fSAl Viro frag2 -= frag1; 1001010d331fSAl Viro frag1 = ufs_fragnum (frag1); 1002010d331fSAl Viro 1003010d331fSAl Viro ufs_free_fragments(inode, tmp + frag1, frag2); 1004010d331fSAl Viro 1005010d331fSAl Viro next1: 1006010d331fSAl Viro /* 1007010d331fSAl Viro * Free whole blocks 1008010d331fSAl Viro */ 1009010d331fSAl Viro for (i = block1 ; i < block2; i++) { 1010010d331fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, i); 1011010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 1012010d331fSAl Viro if (!tmp) 1013010d331fSAl Viro continue; 1014010d331fSAl Viro write_seqlock(&ufsi->meta_lock); 1015010d331fSAl Viro ufs_data_ptr_clear(uspi, p); 1016010d331fSAl Viro write_sequnlock(&ufsi->meta_lock); 1017010d331fSAl Viro 1018a138b4b6SAl Viro free_data(&ctx, tmp, uspi->s_fpb); 1019010d331fSAl Viro } 1020010d331fSAl Viro 1021a138b4b6SAl Viro free_data(&ctx, 0, 0); 1022010d331fSAl Viro 1023010d331fSAl Viro if (frag3 >= frag4) 1024010d331fSAl Viro goto next3; 1025010d331fSAl Viro 1026010d331fSAl Viro /* 1027010d331fSAl Viro * Free last free fragments 1028010d331fSAl Viro */ 1029010d331fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag3)); 1030010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 1031010d331fSAl Viro if (!tmp ) 1032010d331fSAl Viro ufs_panic(sb, "ufs_truncate_direct", "internal error"); 1033010d331fSAl Viro frag4 = ufs_fragnum (frag4); 1034010d331fSAl Viro write_seqlock(&ufsi->meta_lock); 1035010d331fSAl Viro ufs_data_ptr_clear(uspi, p); 1036010d331fSAl Viro write_sequnlock(&ufsi->meta_lock); 1037010d331fSAl Viro 1038010d331fSAl Viro ufs_free_fragments (inode, tmp, frag4); 1039010d331fSAl Viro next3: 1040010d331fSAl Viro 1041010d331fSAl Viro UFSD("EXIT: ino %lu\n", inode->i_ino); 1042010d331fSAl Viro } 1043010d331fSAl Viro 1044163073dbSAl Viro static void free_full_branch(struct inode *inode, u64 ind_block, int depth) 1045010d331fSAl Viro { 10466ac36b87SAl Viro struct super_block *sb = inode->i_sb; 10476ac36b87SAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 1048163073dbSAl Viro struct ufs_buffer_head *ubh = ubh_bread(sb, ind_block, uspi->s_bsize); 10496ac36b87SAl Viro unsigned i; 1050010d331fSAl Viro 1051163073dbSAl Viro if (!ubh) 1052010d331fSAl Viro return; 1053010d331fSAl Viro 10549e0fbbdeSAl Viro if (--depth) { 10556d1ebbcaSAl Viro for (i = 0; i < uspi->s_apb; i++) { 1056163073dbSAl Viro void *p = ubh_get_data_ptr(uspi, ubh, i); 1057163073dbSAl Viro u64 block = ufs_data_ptr_to_cpu(sb, p); 1058cc7231e3SAl Viro if (block) 1059163073dbSAl Viro free_full_branch(inode, block, depth); 1060163073dbSAl Viro } 10616d1ebbcaSAl Viro } else { 10626d1ebbcaSAl Viro struct to_free ctx = {.inode = inode}; 10636d1ebbcaSAl Viro 10646d1ebbcaSAl Viro for (i = 0; i < uspi->s_apb; i++) { 1065163073dbSAl Viro void *p = ubh_get_data_ptr(uspi, ubh, i); 1066163073dbSAl Viro u64 block = ufs_data_ptr_to_cpu(sb, p); 1067cc7231e3SAl Viro if (block) 1068163073dbSAl Viro free_data(&ctx, block, uspi->s_fpb); 10696d1ebbcaSAl Viro } 10706d1ebbcaSAl Viro free_data(&ctx, 0, 0); 10716d1ebbcaSAl Viro } 10726d1ebbcaSAl Viro 10736d1ebbcaSAl Viro ubh_bforget(ubh); 1074163073dbSAl Viro ufs_free_blocks(inode, ind_block, uspi->s_fpb); 10756d1ebbcaSAl Viro } 10766d1ebbcaSAl Viro 10777b4e4f7fSAl Viro static void free_branch_tail(struct inode *inode, unsigned from, struct ufs_buffer_head *ubh, int depth) 10786d1ebbcaSAl Viro { 10796d1ebbcaSAl Viro struct super_block *sb = inode->i_sb; 10806d1ebbcaSAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 10816d1ebbcaSAl Viro unsigned i; 10826d1ebbcaSAl Viro 10836aab6dd3SAl Viro if (--depth) { 1084a9657423SAl Viro for (i = from; i < uspi->s_apb ; i++) { 1085163073dbSAl Viro void *p = ubh_get_data_ptr(uspi, ubh, i); 1086163073dbSAl Viro u64 block = ufs_data_ptr_to_cpu(sb, p); 1087163073dbSAl Viro if (block) { 1088163073dbSAl Viro write_seqlock(&UFS_I(inode)->meta_lock); 1089163073dbSAl Viro ufs_data_ptr_clear(uspi, p); 1090163073dbSAl Viro write_sequnlock(&UFS_I(inode)->meta_lock); 1091a9657423SAl Viro ubh_mark_buffer_dirty(ubh); 1092163073dbSAl Viro free_full_branch(inode, block, depth); 1093163073dbSAl Viro } 1094a9657423SAl Viro } 10959e0fbbdeSAl Viro } else { 1096a138b4b6SAl Viro struct to_free ctx = {.inode = inode}; 10979e0fbbdeSAl Viro 10986ac36b87SAl Viro for (i = from; i < uspi->s_apb; i++) { 1099163073dbSAl Viro void *p = ubh_get_data_ptr(uspi, ubh, i); 1100163073dbSAl Viro u64 block = ufs_data_ptr_to_cpu(sb, p); 1101163073dbSAl Viro if (block) { 1102010d331fSAl Viro write_seqlock(&UFS_I(inode)->meta_lock); 1103163073dbSAl Viro ufs_data_ptr_clear(uspi, p); 1104010d331fSAl Viro write_sequnlock(&UFS_I(inode)->meta_lock); 11059e0fbbdeSAl Viro ubh_mark_buffer_dirty(ubh); 1106163073dbSAl Viro free_data(&ctx, block, uspi->s_fpb); 1107010d331fSAl Viro } 1108163073dbSAl Viro } 1109a138b4b6SAl Viro free_data(&ctx, 0, 0); 1110010d331fSAl Viro } 11119e0fbbdeSAl Viro if (IS_SYNC(inode) && ubh_buffer_dirty(ubh)) 11129e0fbbdeSAl Viro ubh_sync_block(ubh); 11139e0fbbdeSAl Viro ubh_brelse(ubh); 1114010d331fSAl Viro } 1115010d331fSAl Viro 1116010d331fSAl Viro static int ufs_alloc_lastblock(struct inode *inode, loff_t size) 1117010d331fSAl Viro { 1118010d331fSAl Viro int err = 0; 1119010d331fSAl Viro struct super_block *sb = inode->i_sb; 1120010d331fSAl Viro struct address_space *mapping = inode->i_mapping; 1121010d331fSAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 1122010d331fSAl Viro unsigned i, end; 1123010d331fSAl Viro sector_t lastfrag; 1124010d331fSAl Viro struct page *lastpage; 1125010d331fSAl Viro struct buffer_head *bh; 1126010d331fSAl Viro u64 phys64; 1127010d331fSAl Viro 1128010d331fSAl Viro lastfrag = (size + uspi->s_fsize - 1) >> uspi->s_fshift; 1129010d331fSAl Viro 1130010d331fSAl Viro if (!lastfrag) 1131010d331fSAl Viro goto out; 1132010d331fSAl Viro 1133010d331fSAl Viro lastfrag--; 1134010d331fSAl Viro 1135010d331fSAl Viro lastpage = ufs_get_locked_page(mapping, lastfrag >> 1136010d331fSAl Viro (PAGE_CACHE_SHIFT - inode->i_blkbits)); 1137010d331fSAl Viro if (IS_ERR(lastpage)) { 1138010d331fSAl Viro err = -EIO; 1139010d331fSAl Viro goto out; 1140010d331fSAl Viro } 1141010d331fSAl Viro 1142010d331fSAl Viro end = lastfrag & ((1 << (PAGE_CACHE_SHIFT - inode->i_blkbits)) - 1); 1143010d331fSAl Viro bh = page_buffers(lastpage); 1144010d331fSAl Viro for (i = 0; i < end; ++i) 1145010d331fSAl Viro bh = bh->b_this_page; 1146010d331fSAl Viro 1147010d331fSAl Viro 1148010d331fSAl Viro err = ufs_getfrag_block(inode, lastfrag, bh, 1); 1149010d331fSAl Viro 1150010d331fSAl Viro if (unlikely(err)) 1151010d331fSAl Viro goto out_unlock; 1152010d331fSAl Viro 1153010d331fSAl Viro if (buffer_new(bh)) { 1154010d331fSAl Viro clear_buffer_new(bh); 1155010d331fSAl Viro unmap_underlying_metadata(bh->b_bdev, 1156010d331fSAl Viro bh->b_blocknr); 1157010d331fSAl Viro /* 1158010d331fSAl Viro * we do not zeroize fragment, because of 1159010d331fSAl Viro * if it maped to hole, it already contains zeroes 1160010d331fSAl Viro */ 1161010d331fSAl Viro set_buffer_uptodate(bh); 1162010d331fSAl Viro mark_buffer_dirty(bh); 1163010d331fSAl Viro set_page_dirty(lastpage); 1164010d331fSAl Viro } 1165010d331fSAl Viro 1166010d331fSAl Viro if (lastfrag >= UFS_IND_FRAGMENT) { 1167010d331fSAl Viro end = uspi->s_fpb - ufs_fragnum(lastfrag) - 1; 1168010d331fSAl Viro phys64 = bh->b_blocknr + 1; 1169010d331fSAl Viro for (i = 0; i < end; ++i) { 1170010d331fSAl Viro bh = sb_getblk(sb, i + phys64); 1171010d331fSAl Viro lock_buffer(bh); 1172010d331fSAl Viro memset(bh->b_data, 0, sb->s_blocksize); 1173010d331fSAl Viro set_buffer_uptodate(bh); 1174010d331fSAl Viro mark_buffer_dirty(bh); 1175010d331fSAl Viro unlock_buffer(bh); 1176010d331fSAl Viro sync_dirty_buffer(bh); 1177010d331fSAl Viro brelse(bh); 1178010d331fSAl Viro } 1179010d331fSAl Viro } 1180010d331fSAl Viro out_unlock: 1181010d331fSAl Viro ufs_put_locked_page(lastpage); 1182010d331fSAl Viro out: 1183010d331fSAl Viro return err; 1184010d331fSAl Viro } 1185010d331fSAl Viro 1186010d331fSAl Viro static void __ufs_truncate_blocks(struct inode *inode) 1187010d331fSAl Viro { 1188010d331fSAl Viro struct ufs_inode_info *ufsi = UFS_I(inode); 1189010d331fSAl Viro struct super_block *sb = inode->i_sb; 1190010d331fSAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 11917bad5939SAl Viro unsigned offsets[4]; 119231cd043eSAl Viro int depth = ufs_block_to_path(inode, DIRECT_BLOCK, offsets); 11936775e24dSAl Viro int depth2; 119442432739SAl Viro unsigned i; 11957b4e4f7fSAl Viro struct ufs_buffer_head *ubh[3]; 11967b4e4f7fSAl Viro void *p; 11977b4e4f7fSAl Viro u64 block; 11986775e24dSAl Viro 11996775e24dSAl Viro if (!depth) 12006775e24dSAl Viro return; 12016775e24dSAl Viro 12026775e24dSAl Viro /* find the last non-zero in offsets[] */ 12036775e24dSAl Viro for (depth2 = depth - 1; depth2; depth2--) 12046775e24dSAl Viro if (offsets[depth2]) 12056775e24dSAl Viro break; 1206010d331fSAl Viro 1207010d331fSAl Viro mutex_lock(&ufsi->truncate_mutex); 120842432739SAl Viro if (depth == 1) { 1209010d331fSAl Viro ufs_trunc_direct(inode); 121042432739SAl Viro offsets[0] = UFS_IND_BLOCK; 121142432739SAl Viro } else { 12127b4e4f7fSAl Viro /* get the blocks that should be partially emptied */ 12137b4e4f7fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, offsets[0]); 12147b4e4f7fSAl Viro for (i = 0; i < depth2; i++) { 12157b4e4f7fSAl Viro offsets[i]++; /* next branch is fully freed */ 12167b4e4f7fSAl Viro block = ufs_data_ptr_to_cpu(sb, p); 12177b4e4f7fSAl Viro if (!block) 12187b4e4f7fSAl Viro break; 12197b4e4f7fSAl Viro ubh[i] = ubh_bread(sb, block, uspi->s_bsize); 12207b4e4f7fSAl Viro if (!ubh[i]) { 12217b4e4f7fSAl Viro write_seqlock(&ufsi->meta_lock); 12227b4e4f7fSAl Viro ufs_data_ptr_clear(uspi, p); 12237b4e4f7fSAl Viro write_sequnlock(&ufsi->meta_lock); 12247b4e4f7fSAl Viro break; 12257b4e4f7fSAl Viro } 12267b4e4f7fSAl Viro p = ubh_get_data_ptr(uspi, ubh[i], offsets[i + 1]); 12277b4e4f7fSAl Viro } 1228f53bd142SAl Viro while (i--) 12297b4e4f7fSAl Viro free_branch_tail(inode, offsets[i + 1], ubh[i], depth - i - 1); 12307b4e4f7fSAl Viro } 123142432739SAl Viro for (i = offsets[0]; i <= UFS_TIND_BLOCK; i++) { 1232163073dbSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, i); 1233163073dbSAl Viro block = ufs_data_ptr_to_cpu(sb, p); 1234163073dbSAl Viro if (block) { 1235163073dbSAl Viro write_seqlock(&ufsi->meta_lock); 1236163073dbSAl Viro ufs_data_ptr_clear(uspi, p); 1237163073dbSAl Viro write_sequnlock(&ufsi->meta_lock); 1238163073dbSAl Viro free_full_branch(inode, block, i - UFS_IND_BLOCK + 1); 1239163073dbSAl Viro } 124042432739SAl Viro } 1241010d331fSAl Viro ufsi->i_lastfrag = DIRECT_FRAGMENT; 1242b6eede0eSAl Viro mark_inode_dirty(inode); 1243010d331fSAl Viro mutex_unlock(&ufsi->truncate_mutex); 1244010d331fSAl Viro } 1245010d331fSAl Viro 1246010d331fSAl Viro static int ufs_truncate(struct inode *inode, loff_t size) 1247010d331fSAl Viro { 1248010d331fSAl Viro int err = 0; 1249010d331fSAl Viro 1250010d331fSAl Viro UFSD("ENTER: ino %lu, i_size: %llu, old_i_size: %llu\n", 1251010d331fSAl Viro inode->i_ino, (unsigned long long)size, 1252010d331fSAl Viro (unsigned long long)i_size_read(inode)); 1253010d331fSAl Viro 1254010d331fSAl Viro if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1255010d331fSAl Viro S_ISLNK(inode->i_mode))) 1256010d331fSAl Viro return -EINVAL; 1257010d331fSAl Viro if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) 1258010d331fSAl Viro return -EPERM; 1259010d331fSAl Viro 1260010d331fSAl Viro err = ufs_alloc_lastblock(inode, size); 1261010d331fSAl Viro 1262010d331fSAl Viro if (err) 1263010d331fSAl Viro goto out; 1264010d331fSAl Viro 1265010d331fSAl Viro block_truncate_page(inode->i_mapping, size, ufs_getfrag_block); 1266010d331fSAl Viro 1267010d331fSAl Viro truncate_setsize(inode, size); 1268010d331fSAl Viro 1269010d331fSAl Viro __ufs_truncate_blocks(inode); 1270010d331fSAl Viro inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC; 1271010d331fSAl Viro mark_inode_dirty(inode); 1272010d331fSAl Viro out: 1273010d331fSAl Viro UFSD("EXIT: err %d\n", err); 1274010d331fSAl Viro return err; 1275010d331fSAl Viro } 1276010d331fSAl Viro 1277010d331fSAl Viro void ufs_truncate_blocks(struct inode *inode) 1278010d331fSAl Viro { 1279010d331fSAl Viro if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1280010d331fSAl Viro S_ISLNK(inode->i_mode))) 1281010d331fSAl Viro return; 1282010d331fSAl Viro if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) 1283010d331fSAl Viro return; 1284010d331fSAl Viro __ufs_truncate_blocks(inode); 1285010d331fSAl Viro } 1286010d331fSAl Viro 1287010d331fSAl Viro int ufs_setattr(struct dentry *dentry, struct iattr *attr) 1288010d331fSAl Viro { 1289010d331fSAl Viro struct inode *inode = d_inode(dentry); 1290010d331fSAl Viro unsigned int ia_valid = attr->ia_valid; 1291010d331fSAl Viro int error; 1292010d331fSAl Viro 1293010d331fSAl Viro error = inode_change_ok(inode, attr); 1294010d331fSAl Viro if (error) 1295010d331fSAl Viro return error; 1296010d331fSAl Viro 1297010d331fSAl Viro if (ia_valid & ATTR_SIZE && attr->ia_size != inode->i_size) { 1298010d331fSAl Viro error = ufs_truncate(inode, attr->ia_size); 1299010d331fSAl Viro if (error) 1300010d331fSAl Viro return error; 1301010d331fSAl Viro } 1302010d331fSAl Viro 1303010d331fSAl Viro setattr_copy(inode, attr); 1304010d331fSAl Viro mark_inode_dirty(inode); 1305010d331fSAl Viro return 0; 1306010d331fSAl Viro } 1307010d331fSAl Viro 1308010d331fSAl Viro const struct inode_operations ufs_file_inode_operations = { 1309010d331fSAl Viro .setattr = ufs_setattr, 1310010d331fSAl Viro }; 1311