1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 21da177e4SLinus Torvalds /* 31da177e4SLinus Torvalds * linux/fs/ufs/inode.c 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * Copyright (C) 1998 61da177e4SLinus Torvalds * Daniel Pirkl <daniel.pirkl@email.cz> 71da177e4SLinus Torvalds * Charles University, Faculty of Mathematics and Physics 81da177e4SLinus Torvalds * 91da177e4SLinus Torvalds * from 101da177e4SLinus Torvalds * 111da177e4SLinus Torvalds * linux/fs/ext2/inode.c 121da177e4SLinus Torvalds * 131da177e4SLinus Torvalds * Copyright (C) 1992, 1993, 1994, 1995 141da177e4SLinus Torvalds * Remy Card (card@masi.ibp.fr) 151da177e4SLinus Torvalds * Laboratoire MASI - Institut Blaise Pascal 161da177e4SLinus Torvalds * Universite Pierre et Marie Curie (Paris VI) 171da177e4SLinus Torvalds * 181da177e4SLinus Torvalds * from 191da177e4SLinus Torvalds * 201da177e4SLinus Torvalds * linux/fs/minix/inode.c 211da177e4SLinus Torvalds * 221da177e4SLinus Torvalds * Copyright (C) 1991, 1992 Linus Torvalds 231da177e4SLinus Torvalds * 241da177e4SLinus Torvalds * Goal-directed block allocation by Stephen Tweedie (sct@dcs.ed.ac.uk), 1993 251da177e4SLinus Torvalds * Big-endian to little-endian byte-swapping/bitmaps by 261da177e4SLinus Torvalds * David S. Miller (davem@caip.rutgers.edu), 1995 271da177e4SLinus Torvalds */ 281da177e4SLinus Torvalds 297c0f6ba6SLinus Torvalds #include <linux/uaccess.h> 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds #include <linux/errno.h> 321da177e4SLinus Torvalds #include <linux/fs.h> 331da177e4SLinus Torvalds #include <linux/time.h> 341da177e4SLinus Torvalds #include <linux/stat.h> 351da177e4SLinus Torvalds #include <linux/string.h> 361da177e4SLinus Torvalds #include <linux/mm.h> 371da177e4SLinus Torvalds #include <linux/buffer_head.h> 38a9185b41SChristoph Hellwig #include <linux/writeback.h> 39bb8c2d66SJeff Layton #include <linux/iversion.h> 401da177e4SLinus Torvalds 41e5420598SMike Frysinger #include "ufs_fs.h" 42bcd6d4ecSChristoph Hellwig #include "ufs.h" 431da177e4SLinus Torvalds #include "swab.h" 441da177e4SLinus Torvalds #include "util.h" 451da177e4SLinus Torvalds 464e3911f3SAl Viro static int ufs_block_to_path(struct inode *inode, sector_t i_block, unsigned offsets[4]) 471da177e4SLinus Torvalds { 481da177e4SLinus Torvalds struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi; 491da177e4SLinus Torvalds int ptrs = uspi->s_apb; 501da177e4SLinus Torvalds int ptrs_bits = uspi->s_apbshift; 511da177e4SLinus Torvalds const long direct_blocks = UFS_NDADDR, 521da177e4SLinus Torvalds indirect_blocks = ptrs, 531da177e4SLinus Torvalds double_blocks = (1 << (ptrs_bits * 2)); 541da177e4SLinus Torvalds int n = 0; 551da177e4SLinus Torvalds 561da177e4SLinus Torvalds 57abf5d15fSEvgeniy Dushistov UFSD("ptrs=uspi->s_apb = %d,double_blocks=%ld \n",ptrs,double_blocks); 5837044c86SRoel Kluin if (i_block < direct_blocks) { 591da177e4SLinus Torvalds offsets[n++] = i_block; 601da177e4SLinus Torvalds } else if ((i_block -= direct_blocks) < indirect_blocks) { 611da177e4SLinus Torvalds offsets[n++] = UFS_IND_BLOCK; 621da177e4SLinus Torvalds offsets[n++] = i_block; 631da177e4SLinus Torvalds } else if ((i_block -= indirect_blocks) < double_blocks) { 641da177e4SLinus Torvalds offsets[n++] = UFS_DIND_BLOCK; 651da177e4SLinus Torvalds offsets[n++] = i_block >> ptrs_bits; 661da177e4SLinus Torvalds offsets[n++] = i_block & (ptrs - 1); 671da177e4SLinus Torvalds } else if (((i_block -= double_blocks) >> (ptrs_bits * 2)) < ptrs) { 681da177e4SLinus Torvalds offsets[n++] = UFS_TIND_BLOCK; 691da177e4SLinus Torvalds offsets[n++] = i_block >> (ptrs_bits * 2); 701da177e4SLinus Torvalds offsets[n++] = (i_block >> ptrs_bits) & (ptrs - 1); 711da177e4SLinus Torvalds offsets[n++] = i_block & (ptrs - 1); 721da177e4SLinus Torvalds } else { 731da177e4SLinus Torvalds ufs_warning(inode->i_sb, "ufs_block_to_path", "block > big"); 741da177e4SLinus Torvalds } 751da177e4SLinus Torvalds return n; 761da177e4SLinus Torvalds } 771da177e4SLinus Torvalds 78724bb09fSAl Viro typedef struct { 79724bb09fSAl Viro void *p; 80724bb09fSAl Viro union { 81724bb09fSAl Viro __fs32 key32; 82724bb09fSAl Viro __fs64 key64; 83724bb09fSAl Viro }; 84724bb09fSAl Viro struct buffer_head *bh; 85724bb09fSAl Viro } Indirect; 86724bb09fSAl Viro 87724bb09fSAl Viro static inline int grow_chain32(struct ufs_inode_info *ufsi, 88724bb09fSAl Viro struct buffer_head *bh, __fs32 *v, 89724bb09fSAl Viro Indirect *from, Indirect *to) 90724bb09fSAl Viro { 91724bb09fSAl Viro Indirect *p; 92724bb09fSAl Viro unsigned seq; 93724bb09fSAl Viro to->bh = bh; 94724bb09fSAl Viro do { 95724bb09fSAl Viro seq = read_seqbegin(&ufsi->meta_lock); 96724bb09fSAl Viro to->key32 = *(__fs32 *)(to->p = v); 97724bb09fSAl Viro for (p = from; p <= to && p->key32 == *(__fs32 *)p->p; p++) 98724bb09fSAl Viro ; 99724bb09fSAl Viro } while (read_seqretry(&ufsi->meta_lock, seq)); 100724bb09fSAl Viro return (p > to); 101724bb09fSAl Viro } 102724bb09fSAl Viro 103724bb09fSAl Viro static inline int grow_chain64(struct ufs_inode_info *ufsi, 104724bb09fSAl Viro struct buffer_head *bh, __fs64 *v, 105724bb09fSAl Viro Indirect *from, Indirect *to) 106724bb09fSAl Viro { 107724bb09fSAl Viro Indirect *p; 108724bb09fSAl Viro unsigned seq; 109724bb09fSAl Viro to->bh = bh; 110724bb09fSAl Viro do { 111724bb09fSAl Viro seq = read_seqbegin(&ufsi->meta_lock); 112724bb09fSAl Viro to->key64 = *(__fs64 *)(to->p = v); 113724bb09fSAl Viro for (p = from; p <= to && p->key64 == *(__fs64 *)p->p; p++) 114724bb09fSAl Viro ; 115724bb09fSAl Viro } while (read_seqretry(&ufsi->meta_lock, seq)); 116724bb09fSAl Viro return (p > to); 117724bb09fSAl Viro } 118724bb09fSAl Viro 1191da177e4SLinus Torvalds /* 1201da177e4SLinus Torvalds * Returns the location of the fragment from 12125985edcSLucas De Marchi * the beginning of the filesystem. 1221da177e4SLinus Torvalds */ 1231da177e4SLinus Torvalds 1244b7068c8SAl Viro static u64 ufs_frag_map(struct inode *inode, unsigned offsets[4], int depth) 1251da177e4SLinus Torvalds { 1261da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 1271da177e4SLinus Torvalds struct super_block *sb = inode->i_sb; 1281da177e4SLinus Torvalds struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 1291da177e4SLinus Torvalds u64 mask = (u64) uspi->s_apbmask>>uspi->s_fpbshift; 1301da177e4SLinus Torvalds int shift = uspi->s_apbshift-uspi->s_fpbshift; 131724bb09fSAl Viro Indirect chain[4], *q = chain; 1324b7068c8SAl Viro unsigned *p; 1331da177e4SLinus Torvalds unsigned flags = UFS_SB(sb)->s_flags; 134724bb09fSAl Viro u64 res = 0; 1351da177e4SLinus Torvalds 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: 1944b7068c8SAl Viro res += uspi->s_sbbase; 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 2100f3c1294SAl Viro /* 2110f3c1294SAl Viro * Unpacking tails: we have a file with partial final block and 2120f3c1294SAl Viro * we had been asked to extend it. If the fragment being written 2130f3c1294SAl Viro * is within the same block, we need to extend the tail just to cover 2140f3c1294SAl Viro * that fragment. Otherwise the tail is extended to full block. 2150f3c1294SAl Viro * 2160f3c1294SAl Viro * Note that we might need to create a _new_ tail, but that will 2170f3c1294SAl Viro * be handled elsewhere; this is strictly for resizing old 2180f3c1294SAl Viro * ones. 2190f3c1294SAl Viro */ 2200f3c1294SAl Viro static bool 2210f3c1294SAl Viro ufs_extend_tail(struct inode *inode, u64 writes_to, 2220f3c1294SAl Viro int *err, struct page *locked_page) 2230f3c1294SAl Viro { 2240f3c1294SAl Viro struct ufs_inode_info *ufsi = UFS_I(inode); 2250f3c1294SAl Viro struct super_block *sb = inode->i_sb; 2260f3c1294SAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 2270f3c1294SAl Viro unsigned lastfrag = ufsi->i_lastfrag; /* it's a short file, so unsigned is enough */ 2280f3c1294SAl Viro unsigned block = ufs_fragstoblks(lastfrag); 2290f3c1294SAl Viro unsigned new_size; 2300f3c1294SAl Viro void *p; 2310f3c1294SAl Viro u64 tmp; 2320f3c1294SAl Viro 2330f3c1294SAl Viro if (writes_to < (lastfrag | uspi->s_fpbmask)) 2340f3c1294SAl Viro new_size = (writes_to & uspi->s_fpbmask) + 1; 2350f3c1294SAl Viro else 2360f3c1294SAl Viro new_size = uspi->s_fpb; 2370f3c1294SAl Viro 2380f3c1294SAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, block); 2390f3c1294SAl Viro tmp = ufs_new_fragments(inode, p, lastfrag, ufs_data_ptr_to_cpu(sb, p), 240940ef1a0SAl Viro new_size - (lastfrag & uspi->s_fpbmask), err, 241940ef1a0SAl Viro locked_page); 2420f3c1294SAl Viro return tmp != 0; 2430f3c1294SAl Viro } 2440f3c1294SAl Viro 245022a6dc5SEvgeniy Dushistov /** 246022a6dc5SEvgeniy Dushistov * ufs_inode_getfrag() - allocate new fragment(s) 247edc023caSFabian Frederick * @inode: pointer to inode 2485336970bSAl Viro * @index: number of block pointer within the inode's array. 249edc023caSFabian Frederick * @new_fragment: number of new allocated fragment(s) 250edc023caSFabian Frederick * @err: we set it if something wrong 251edc023caSFabian Frederick * @new: we set it if we allocate new block 252edc023caSFabian Frederick * @locked_page: for ufs_new_fragments() 253022a6dc5SEvgeniy Dushistov */ 254177848a0SAl Viro static u64 2555336970bSAl Viro ufs_inode_getfrag(struct inode *inode, unsigned index, 2565336970bSAl Viro sector_t new_fragment, int *err, 2574e317ce7SAl Viro int *new, struct page *locked_page) 2581da177e4SLinus Torvalds { 2591da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 260022a6dc5SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 261022a6dc5SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 2625336970bSAl Viro u64 tmp, goal, lastfrag; 2630f3c1294SAl Viro unsigned nfrags = uspi->s_fpb; 2640f3c1294SAl Viro void *p; 2651da177e4SLinus Torvalds 2661da177e4SLinus Torvalds /* TODO : to be done for write support 2671da177e4SLinus Torvalds if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 2681da177e4SLinus Torvalds goto ufs2; 2691da177e4SLinus Torvalds */ 2701da177e4SLinus Torvalds 2715336970bSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, index); 27254fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, p); 2730f3c1294SAl Viro if (tmp) 274bbb3eb9dSAl Viro goto out; 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvalds lastfrag = ufsi->i_lastfrag; 2770f3c1294SAl Viro 2780f3c1294SAl Viro /* will that be a new tail? */ 2790f3c1294SAl Viro if (new_fragment < UFS_NDIR_FRAGMENT && new_fragment >= lastfrag) 2800f3c1294SAl Viro nfrags = (new_fragment & uspi->s_fpbmask) + 1; 2810f3c1294SAl Viro 2820f3c1294SAl Viro goal = 0; 2835336970bSAl Viro if (index) { 2840f3c1294SAl Viro goal = ufs_data_ptr_to_cpu(sb, 2855336970bSAl Viro ufs_get_direct_data_ptr(uspi, ufsi, index - 1)); 2860f3c1294SAl Viro if (goal) 2870f3c1294SAl Viro goal += uspi->s_fpb; 288c37336b0SEvgeniy Dushistov } 2895336970bSAl Viro tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), 2908785d84dSAl Viro goal, nfrags, err, locked_page); 2910f3c1294SAl Viro 2921da177e4SLinus Torvalds if (!tmp) { 2931da177e4SLinus Torvalds *err = -ENOSPC; 294177848a0SAl Viro return 0; 2951da177e4SLinus Torvalds } 2961da177e4SLinus Torvalds 2974e317ce7SAl Viro if (new) 2981da177e4SLinus Torvalds *new = 1; 29902027d42SDeepa Dinamani inode->i_ctime = current_time(inode); 3001da177e4SLinus Torvalds if (IS_SYNC(inode)) 3011da177e4SLinus Torvalds ufs_sync_inode (inode); 3021da177e4SLinus Torvalds mark_inode_dirty(inode); 303bbb3eb9dSAl Viro out: 304177848a0SAl Viro return tmp + uspi->s_sbbase; 3051da177e4SLinus Torvalds 3061da177e4SLinus Torvalds /* This part : To be implemented .... 3071da177e4SLinus Torvalds Required only for writing, not required for READ-ONLY. 3081da177e4SLinus Torvalds ufs2: 3091da177e4SLinus Torvalds 3101da177e4SLinus Torvalds u2_block = ufs_fragstoblks(fragment); 3111da177e4SLinus Torvalds u2_blockoff = ufs_fragnum(fragment); 3121da177e4SLinus Torvalds p = ufsi->i_u1.u2_i_data + block; 3131da177e4SLinus Torvalds goal = 0; 3141da177e4SLinus Torvalds 3151da177e4SLinus Torvalds repeat2: 3161da177e4SLinus Torvalds tmp = fs32_to_cpu(sb, *p); 3171da177e4SLinus Torvalds lastfrag = ufsi->i_lastfrag; 3181da177e4SLinus Torvalds 3191da177e4SLinus Torvalds */ 3201da177e4SLinus Torvalds } 3211da177e4SLinus Torvalds 322022a6dc5SEvgeniy Dushistov /** 323022a6dc5SEvgeniy Dushistov * ufs_inode_getblock() - allocate new block 324edc023caSFabian Frederick * @inode: pointer to inode 325619cfac0SAl Viro * @ind_block: block number of the indirect block 326619cfac0SAl Viro * @index: number of pointer within the indirect block 327edc023caSFabian Frederick * @new_fragment: number of new allocated fragment 328022a6dc5SEvgeniy Dushistov * (block will hold this fragment and also uspi->s_fpb-1) 329edc023caSFabian Frederick * @err: see ufs_inode_getfrag() 330edc023caSFabian Frederick * @new: see ufs_inode_getfrag() 331edc023caSFabian Frederick * @locked_page: see ufs_inode_getfrag() 332022a6dc5SEvgeniy Dushistov */ 333177848a0SAl Viro static u64 334619cfac0SAl Viro ufs_inode_getblock(struct inode *inode, u64 ind_block, 335721435a7SAl Viro unsigned index, sector_t new_fragment, int *err, 3364e317ce7SAl Viro int *new, struct page *locked_page) 3371da177e4SLinus Torvalds { 338022a6dc5SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 339022a6dc5SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 340619cfac0SAl Viro int shift = uspi->s_apbshift - uspi->s_fpbshift; 341721435a7SAl Viro u64 tmp = 0, goal; 342619cfac0SAl Viro struct buffer_head *bh; 34354fb996aSEvgeniy Dushistov void *p; 3441da177e4SLinus Torvalds 345619cfac0SAl Viro if (!ind_block) 346619cfac0SAl Viro return 0; 347619cfac0SAl Viro 348619cfac0SAl Viro bh = sb_bread(sb, ind_block + (index >> shift)); 3495fbfb238SAl Viro if (unlikely(!bh)) { 3505fbfb238SAl Viro *err = -EIO; 351619cfac0SAl Viro return 0; 3525fbfb238SAl Viro } 353619cfac0SAl Viro 354619cfac0SAl Viro index &= uspi->s_apbmask >> uspi->s_fpbshift; 35554fb996aSEvgeniy Dushistov if (uspi->fs_magic == UFS2_MAGIC) 356721435a7SAl Viro p = (__fs64 *)bh->b_data + index; 35754fb996aSEvgeniy Dushistov else 358721435a7SAl Viro p = (__fs32 *)bh->b_data + index; 3595a39c255SAl Viro 36054fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, p); 361bbb3eb9dSAl Viro if (tmp) 3621da177e4SLinus Torvalds goto out; 3631da177e4SLinus Torvalds 364721435a7SAl Viro if (index && (uspi->fs_magic == UFS2_MAGIC ? 365721435a7SAl Viro (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[index-1])) : 366721435a7SAl Viro (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[index-1])))) 3671da177e4SLinus Torvalds goal = tmp + uspi->s_fpb; 3681da177e4SLinus Torvalds else 3691da177e4SLinus Torvalds goal = bh->b_blocknr + uspi->s_fpb; 3706ef4d6bfSEvgeniy Dushistov tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal, 3716ef4d6bfSEvgeniy Dushistov uspi->s_fpb, err, locked_page); 3725a39c255SAl Viro if (!tmp) 3731da177e4SLinus Torvalds goto out; 374c9a27b5dSEvgeniy Dushistov 375bbb3eb9dSAl Viro if (new) 3761da177e4SLinus Torvalds *new = 1; 3771da177e4SLinus Torvalds 3781da177e4SLinus Torvalds mark_buffer_dirty(bh); 3791da177e4SLinus Torvalds if (IS_SYNC(inode)) 3801da177e4SLinus Torvalds sync_dirty_buffer(bh); 38102027d42SDeepa Dinamani inode->i_ctime = current_time(inode); 3821da177e4SLinus Torvalds mark_inode_dirty(inode); 3831da177e4SLinus Torvalds out: 3841da177e4SLinus Torvalds brelse (bh); 385abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 386177848a0SAl Viro if (tmp) 387177848a0SAl Viro tmp += uspi->s_sbbase; 388177848a0SAl Viro return tmp; 3891da177e4SLinus Torvalds } 3901da177e4SLinus Torvalds 391022a6dc5SEvgeniy Dushistov /** 3927422caa5SAlessio Igor Bogani * ufs_getfrag_block() - `get_block_t' function, interface between UFS and 393022a6dc5SEvgeniy Dushistov * readpage, writepage and so on 3941da177e4SLinus Torvalds */ 3951da177e4SLinus Torvalds 396010d331fSAl Viro static int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create) 3971da177e4SLinus Torvalds { 3981da177e4SLinus Torvalds struct super_block *sb = inode->i_sb; 3990385f1f9SAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 4000385f1f9SAl Viro int err = 0, new = 0; 4014b7068c8SAl Viro unsigned offsets[4]; 4024b7068c8SAl Viro int depth = ufs_block_to_path(inode, fragment >> uspi->s_fpbshift, offsets); 4031da177e4SLinus Torvalds u64 phys64 = 0; 404177848a0SAl Viro unsigned frag = fragment & uspi->s_fpbmask; 4051da177e4SLinus Torvalds 4064b7068c8SAl Viro phys64 = ufs_frag_map(inode, offsets, depth); 40709bf4f5bSAl Viro if (!create) 40809bf4f5bSAl Viro goto done; 4091da177e4SLinus Torvalds 41009bf4f5bSAl Viro if (phys64) { 41109bf4f5bSAl Viro if (fragment >= UFS_NDIR_FRAGMENT) 41209bf4f5bSAl Viro goto done; 41309bf4f5bSAl Viro read_seqlock_excl(&UFS_I(inode)->meta_lock); 41409bf4f5bSAl Viro if (fragment < UFS_I(inode)->i_lastfrag) { 41509bf4f5bSAl Viro read_sequnlock_excl(&UFS_I(inode)->meta_lock); 41609bf4f5bSAl Viro goto done; 41709bf4f5bSAl Viro } 41809bf4f5bSAl Viro read_sequnlock_excl(&UFS_I(inode)->meta_lock); 41909bf4f5bSAl Viro } 4201da177e4SLinus Torvalds /* This code entered only while writing ....? */ 4211da177e4SLinus Torvalds 422724bb09fSAl Viro mutex_lock(&UFS_I(inode)->truncate_mutex); 4231da177e4SLinus Torvalds 424abf5d15fSEvgeniy Dushistov UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment); 4250385f1f9SAl Viro if (unlikely(!depth)) { 4260385f1f9SAl Viro ufs_warning(sb, "ufs_get_block", "block > big"); 4270385f1f9SAl Viro err = -EIO; 4280385f1f9SAl Viro goto out; 4290385f1f9SAl Viro } 4300f3c1294SAl Viro 4310f3c1294SAl Viro if (UFS_I(inode)->i_lastfrag < UFS_NDIR_FRAGMENT) { 4320f3c1294SAl Viro unsigned lastfrag = UFS_I(inode)->i_lastfrag; 4330f3c1294SAl Viro unsigned tailfrags = lastfrag & uspi->s_fpbmask; 4340f3c1294SAl Viro if (tailfrags && fragment >= lastfrag) { 4350f3c1294SAl Viro if (!ufs_extend_tail(inode, fragment, 4360f3c1294SAl Viro &err, bh_result->b_page)) 4370385f1f9SAl Viro goto out; 4380f3c1294SAl Viro } 4390f3c1294SAl Viro } 4400f3c1294SAl Viro 44171dd4284SAl Viro if (depth == 1) { 4425336970bSAl Viro phys64 = ufs_inode_getfrag(inode, offsets[0], fragment, 4434e317ce7SAl Viro &err, &new, bh_result->b_page); 4444eeff4c9SAl Viro } else { 4454eeff4c9SAl Viro int i; 4465336970bSAl Viro phys64 = ufs_inode_getfrag(inode, offsets[0], fragment, 4474e317ce7SAl Viro &err, NULL, NULL); 4484eeff4c9SAl Viro for (i = 1; i < depth - 1; i++) 4494eeff4c9SAl Viro phys64 = ufs_inode_getblock(inode, phys64, offsets[i], 4504e317ce7SAl Viro fragment, &err, NULL, NULL); 451619cfac0SAl Viro phys64 = ufs_inode_getblock(inode, phys64, offsets[depth - 1], 4524e317ce7SAl Viro fragment, &err, &new, bh_result->b_page); 4534eeff4c9SAl Viro } 4540385f1f9SAl Viro out: 455177848a0SAl Viro if (phys64) { 456177848a0SAl Viro phys64 += frag; 4570385f1f9SAl Viro map_bh(bh_result, sb, phys64); 4581da177e4SLinus Torvalds if (new) 4591da177e4SLinus Torvalds set_buffer_new(bh_result); 4600385f1f9SAl Viro } 461724bb09fSAl Viro mutex_unlock(&UFS_I(inode)->truncate_mutex); 4621da177e4SLinus Torvalds return err; 46309bf4f5bSAl Viro 46409bf4f5bSAl Viro done: 46509bf4f5bSAl Viro if (phys64) 46609bf4f5bSAl Viro map_bh(bh_result, sb, phys64 + frag); 46709bf4f5bSAl Viro return 0; 4681da177e4SLinus Torvalds } 4691da177e4SLinus Torvalds 4701da177e4SLinus Torvalds static int ufs_writepage(struct page *page, struct writeback_control *wbc) 4711da177e4SLinus Torvalds { 4721da177e4SLinus Torvalds return block_write_full_page(page,ufs_getfrag_block,wbc); 4731da177e4SLinus Torvalds } 47482b9d1d0SNick Piggin 4751da177e4SLinus Torvalds static int ufs_readpage(struct file *file, struct page *page) 4761da177e4SLinus Torvalds { 4771da177e4SLinus Torvalds return block_read_full_page(page,ufs_getfrag_block); 4781da177e4SLinus Torvalds } 47982b9d1d0SNick Piggin 480f4e420dcSChristoph Hellwig int ufs_prepare_chunk(struct page *page, loff_t pos, unsigned len) 4811da177e4SLinus Torvalds { 4826e1db88dSChristoph Hellwig return __block_write_begin(page, pos, len, ufs_getfrag_block); 4831da177e4SLinus Torvalds } 48482b9d1d0SNick Piggin 485010d331fSAl Viro static void ufs_truncate_blocks(struct inode *); 486010d331fSAl Viro 48783f6e371SMarco Stornelli static void ufs_write_failed(struct address_space *mapping, loff_t to) 48883f6e371SMarco Stornelli { 48983f6e371SMarco Stornelli struct inode *inode = mapping->host; 49083f6e371SMarco Stornelli 4913b7a3a05SAl Viro if (to > inode->i_size) { 4927caef267SKirill A. Shutemov truncate_pagecache(inode, inode->i_size); 4933b7a3a05SAl Viro ufs_truncate_blocks(inode); 4943b7a3a05SAl Viro } 49583f6e371SMarco Stornelli } 49683f6e371SMarco Stornelli 49782b9d1d0SNick Piggin static int ufs_write_begin(struct file *file, struct address_space *mapping, 49882b9d1d0SNick Piggin loff_t pos, unsigned len, unsigned flags, 49982b9d1d0SNick Piggin struct page **pagep, void **fsdata) 50082b9d1d0SNick Piggin { 501155130a4SChristoph Hellwig int ret; 502155130a4SChristoph Hellwig 503155130a4SChristoph Hellwig ret = block_write_begin(mapping, pos, len, flags, pagep, 504f4e420dcSChristoph Hellwig ufs_getfrag_block); 50583f6e371SMarco Stornelli if (unlikely(ret)) 50683f6e371SMarco Stornelli ufs_write_failed(mapping, pos + len); 507155130a4SChristoph Hellwig 508155130a4SChristoph Hellwig return ret; 50982b9d1d0SNick Piggin } 51082b9d1d0SNick Piggin 5113b7a3a05SAl Viro static int ufs_write_end(struct file *file, struct address_space *mapping, 5123b7a3a05SAl Viro loff_t pos, unsigned len, unsigned copied, 5133b7a3a05SAl Viro struct page *page, void *fsdata) 5143b7a3a05SAl Viro { 5153b7a3a05SAl Viro int ret; 5163b7a3a05SAl Viro 5173b7a3a05SAl Viro ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata); 5183b7a3a05SAl Viro if (ret < len) 5193b7a3a05SAl Viro ufs_write_failed(mapping, pos + len); 5203b7a3a05SAl Viro return ret; 5213b7a3a05SAl Viro } 5223b7a3a05SAl Viro 5231da177e4SLinus Torvalds static sector_t ufs_bmap(struct address_space *mapping, sector_t block) 5241da177e4SLinus Torvalds { 5251da177e4SLinus Torvalds return generic_block_bmap(mapping,block,ufs_getfrag_block); 5261da177e4SLinus Torvalds } 52782b9d1d0SNick Piggin 528f5e54d6eSChristoph Hellwig const struct address_space_operations ufs_aops = { 5291da177e4SLinus Torvalds .readpage = ufs_readpage, 5301da177e4SLinus Torvalds .writepage = ufs_writepage, 53182b9d1d0SNick Piggin .write_begin = ufs_write_begin, 5323b7a3a05SAl Viro .write_end = ufs_write_end, 5331da177e4SLinus Torvalds .bmap = ufs_bmap 5341da177e4SLinus Torvalds }; 5351da177e4SLinus Torvalds 536826843a3SEvgeniy Dushistov static void ufs_set_inode_ops(struct inode *inode) 537826843a3SEvgeniy Dushistov { 538826843a3SEvgeniy Dushistov if (S_ISREG(inode->i_mode)) { 539826843a3SEvgeniy Dushistov inode->i_op = &ufs_file_inode_operations; 540826843a3SEvgeniy Dushistov inode->i_fop = &ufs_file_operations; 541826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 542826843a3SEvgeniy Dushistov } else if (S_ISDIR(inode->i_mode)) { 543826843a3SEvgeniy Dushistov inode->i_op = &ufs_dir_inode_operations; 544826843a3SEvgeniy Dushistov inode->i_fop = &ufs_dir_operations; 545826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 546826843a3SEvgeniy Dushistov } else if (S_ISLNK(inode->i_mode)) { 5474b8061a6SAl Viro if (!inode->i_blocks) { 5484b8061a6SAl Viro inode->i_link = (char *)UFS_I(inode)->i_u1.i_symlink; 5499cdce3c0SAl Viro inode->i_op = &simple_symlink_inode_operations; 5504b8061a6SAl Viro } else { 551826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 5529cdce3c0SAl Viro inode->i_op = &page_symlink_inode_operations; 55321fc61c7SAl Viro inode_nohighmem(inode); 554826843a3SEvgeniy Dushistov } 555826843a3SEvgeniy Dushistov } else 556826843a3SEvgeniy Dushistov init_special_inode(inode, inode->i_mode, 557826843a3SEvgeniy Dushistov ufs_get_inode_dev(inode->i_sb, UFS_I(inode))); 558826843a3SEvgeniy Dushistov } 559826843a3SEvgeniy Dushistov 56007a0cfecSEvgeniy Dushistov static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode) 5611da177e4SLinus Torvalds { 5621da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 56305f225dcSEvgeniy Dushistov struct super_block *sb = inode->i_sb; 5646a9a06d9SAl Viro umode_t mode; 5651da177e4SLinus Torvalds 5661da177e4SLinus Torvalds /* 5671da177e4SLinus Torvalds * Copy data to the in-core inode. 5681da177e4SLinus Torvalds */ 5691da177e4SLinus Torvalds inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode); 570bfe86848SMiklos Szeredi set_nlink(inode, fs16_to_cpu(sb, ufs_inode->ui_nlink)); 571c0ef65d2SAl Viro if (inode->i_nlink == 0) 572c0ef65d2SAl Viro return -ESTALE; 5731da177e4SLinus Torvalds 5741da177e4SLinus Torvalds /* 5751da177e4SLinus Torvalds * Linux now has 32-bit uid and gid, so we can support EFT. 5761da177e4SLinus Torvalds */ 57772235465SEric W. Biederman i_uid_write(inode, ufs_get_inode_uid(sb, ufs_inode)); 57872235465SEric W. Biederman i_gid_write(inode, ufs_get_inode_gid(sb, ufs_inode)); 5791da177e4SLinus Torvalds 5801da177e4SLinus Torvalds inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); 58123ac7cbaSAl Viro inode->i_atime.tv_sec = (signed)fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); 58223ac7cbaSAl Viro inode->i_ctime.tv_sec = (signed)fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); 58323ac7cbaSAl Viro inode->i_mtime.tv_sec = (signed)fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); 5841da177e4SLinus Torvalds inode->i_mtime.tv_nsec = 0; 5851da177e4SLinus Torvalds inode->i_atime.tv_nsec = 0; 5861da177e4SLinus Torvalds inode->i_ctime.tv_nsec = 0; 5871da177e4SLinus Torvalds inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); 5883313e292SEvgeniy Dushistov inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen); 5891da177e4SLinus Torvalds ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); 5901da177e4SLinus Torvalds ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 5911da177e4SLinus Torvalds ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 59205f225dcSEvgeniy Dushistov 5931da177e4SLinus Torvalds 5941da177e4SLinus Torvalds if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 595f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr, 596f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 597dd187a26SEvgeniy Dushistov } else { 598f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink, 599b12903f1SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink) - 1); 600b12903f1SDuane Griffin ufsi->i_u1.i_symlink[sizeof(ufs_inode->ui_u2.ui_symlink) - 1] = 0; 6011da177e4SLinus Torvalds } 60207a0cfecSEvgeniy Dushistov return 0; 60305f225dcSEvgeniy Dushistov } 6041da177e4SLinus Torvalds 60507a0cfecSEvgeniy Dushistov static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode) 60605f225dcSEvgeniy Dushistov { 60705f225dcSEvgeniy Dushistov struct ufs_inode_info *ufsi = UFS_I(inode); 60805f225dcSEvgeniy Dushistov struct super_block *sb = inode->i_sb; 6096a9a06d9SAl Viro umode_t mode; 6101da177e4SLinus Torvalds 611abf5d15fSEvgeniy Dushistov UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino); 6121da177e4SLinus Torvalds /* 6131da177e4SLinus Torvalds * Copy data to the in-core inode. 6141da177e4SLinus Torvalds */ 6151da177e4SLinus Torvalds inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode); 616bfe86848SMiklos Szeredi set_nlink(inode, fs16_to_cpu(sb, ufs2_inode->ui_nlink)); 617c0ef65d2SAl Viro if (inode->i_nlink == 0) 618c0ef65d2SAl Viro return -ESTALE; 6191da177e4SLinus Torvalds 6201da177e4SLinus Torvalds /* 6211da177e4SLinus Torvalds * Linux now has 32-bit uid and gid, so we can support EFT. 6221da177e4SLinus Torvalds */ 62372235465SEric W. Biederman i_uid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_uid)); 62472235465SEric W. Biederman i_gid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_gid)); 6251da177e4SLinus Torvalds 6261da177e4SLinus Torvalds inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size); 6272189850fSEvgeniy Dushistov inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime); 6282189850fSEvgeniy Dushistov inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime); 6292189850fSEvgeniy Dushistov inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime); 6302189850fSEvgeniy Dushistov inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec); 6312189850fSEvgeniy Dushistov inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec); 6322189850fSEvgeniy Dushistov inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec); 6331da177e4SLinus Torvalds inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks); 6343313e292SEvgeniy Dushistov inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen); 6351da177e4SLinus Torvalds ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags); 6361da177e4SLinus Torvalds /* 6371da177e4SLinus Torvalds ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 6381da177e4SLinus Torvalds ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 6391da177e4SLinus Torvalds */ 6401da177e4SLinus Torvalds 6411da177e4SLinus Torvalds if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 642f33219b7SDuane Griffin memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr, 643f33219b7SDuane Griffin sizeof(ufs2_inode->ui_u2.ui_addr)); 64405f225dcSEvgeniy Dushistov } else { 645f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink, 646b12903f1SDuane Griffin sizeof(ufs2_inode->ui_u2.ui_symlink) - 1); 647b12903f1SDuane Griffin ufsi->i_u1.i_symlink[sizeof(ufs2_inode->ui_u2.ui_symlink) - 1] = 0; 6481da177e4SLinus Torvalds } 64907a0cfecSEvgeniy Dushistov return 0; 65005f225dcSEvgeniy Dushistov } 65105f225dcSEvgeniy Dushistov 652b55c460dSDavid Howells struct inode *ufs_iget(struct super_block *sb, unsigned long ino) 65305f225dcSEvgeniy Dushistov { 654b55c460dSDavid Howells struct ufs_inode_info *ufsi; 655b55c460dSDavid Howells struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 65605f225dcSEvgeniy Dushistov struct buffer_head * bh; 657b55c460dSDavid Howells struct inode *inode; 658c0ef65d2SAl Viro int err = -EIO; 65905f225dcSEvgeniy Dushistov 660b55c460dSDavid Howells UFSD("ENTER, ino %lu\n", ino); 66105f225dcSEvgeniy Dushistov 662b55c460dSDavid Howells if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) { 66305f225dcSEvgeniy Dushistov ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n", 664b55c460dSDavid Howells ino); 665b55c460dSDavid Howells return ERR_PTR(-EIO); 66605f225dcSEvgeniy Dushistov } 66705f225dcSEvgeniy Dushistov 668b55c460dSDavid Howells inode = iget_locked(sb, ino); 669b55c460dSDavid Howells if (!inode) 670b55c460dSDavid Howells return ERR_PTR(-ENOMEM); 671b55c460dSDavid Howells if (!(inode->i_state & I_NEW)) 672b55c460dSDavid Howells return inode; 673b55c460dSDavid Howells 674b55c460dSDavid Howells ufsi = UFS_I(inode); 675b55c460dSDavid Howells 67605f225dcSEvgeniy Dushistov bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino)); 67705f225dcSEvgeniy Dushistov if (!bh) { 67805f225dcSEvgeniy Dushistov ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n", 67905f225dcSEvgeniy Dushistov inode->i_ino); 68005f225dcSEvgeniy Dushistov goto bad_inode; 68105f225dcSEvgeniy Dushistov } 68205f225dcSEvgeniy Dushistov if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { 68305f225dcSEvgeniy Dushistov struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 68405f225dcSEvgeniy Dushistov 68507a0cfecSEvgeniy Dushistov err = ufs2_read_inode(inode, 68605f225dcSEvgeniy Dushistov ufs2_inode + ufs_inotofsbo(inode->i_ino)); 68705f225dcSEvgeniy Dushistov } else { 68805f225dcSEvgeniy Dushistov struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data; 68905f225dcSEvgeniy Dushistov 69007a0cfecSEvgeniy Dushistov err = ufs1_read_inode(inode, 69107a0cfecSEvgeniy Dushistov ufs_inode + ufs_inotofsbo(inode->i_ino)); 69205f225dcSEvgeniy Dushistov } 693c0ef65d2SAl Viro brelse(bh); 69407a0cfecSEvgeniy Dushistov if (err) 69507a0cfecSEvgeniy Dushistov goto bad_inode; 696c0ef65d2SAl Viro 697bb8c2d66SJeff Layton inode_inc_iversion(inode); 69805f225dcSEvgeniy Dushistov ufsi->i_lastfrag = 69905f225dcSEvgeniy Dushistov (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; 70005f225dcSEvgeniy Dushistov ufsi->i_dir_start_lookup = 0; 7011da177e4SLinus Torvalds ufsi->i_osync = 0; 7021da177e4SLinus Torvalds 703826843a3SEvgeniy Dushistov ufs_set_inode_ops(inode); 7041da177e4SLinus Torvalds 705abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 706b55c460dSDavid Howells unlock_new_inode(inode); 707b55c460dSDavid Howells return inode; 70805f225dcSEvgeniy Dushistov 70905f225dcSEvgeniy Dushistov bad_inode: 710b55c460dSDavid Howells iget_failed(inode); 711c0ef65d2SAl Viro return ERR_PTR(err); 7121da177e4SLinus Torvalds } 7131da177e4SLinus Torvalds 7143313e292SEvgeniy Dushistov static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode) 7151da177e4SLinus Torvalds { 7163313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 7171da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 7181da177e4SLinus Torvalds 7191da177e4SLinus Torvalds ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 7201da177e4SLinus Torvalds ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 7211da177e4SLinus Torvalds 72272235465SEric W. Biederman ufs_set_inode_uid(sb, ufs_inode, i_uid_read(inode)); 72372235465SEric W. Biederman ufs_set_inode_gid(sb, ufs_inode, i_gid_read(inode)); 7241da177e4SLinus Torvalds 7251da177e4SLinus Torvalds ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 7261da177e4SLinus Torvalds ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec); 7271da177e4SLinus Torvalds ufs_inode->ui_atime.tv_usec = 0; 7281da177e4SLinus Torvalds ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec); 7291da177e4SLinus Torvalds ufs_inode->ui_ctime.tv_usec = 0; 7301da177e4SLinus Torvalds ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec); 7311da177e4SLinus Torvalds ufs_inode->ui_mtime.tv_usec = 0; 7321da177e4SLinus Torvalds ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks); 7331da177e4SLinus Torvalds ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 7343313e292SEvgeniy Dushistov ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); 7351da177e4SLinus Torvalds 7363313e292SEvgeniy Dushistov if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) { 7371da177e4SLinus Torvalds ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow); 7381da177e4SLinus Torvalds ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag); 7391da177e4SLinus Torvalds } 7401da177e4SLinus Torvalds 7411da177e4SLinus Torvalds if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 7421da177e4SLinus Torvalds /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 7431da177e4SLinus Torvalds ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0]; 7441da177e4SLinus Torvalds } else if (inode->i_blocks) { 745f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data, 746f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 7471da177e4SLinus Torvalds } 7481da177e4SLinus Torvalds else { 749f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, 750f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink)); 7511da177e4SLinus Torvalds } 7521da177e4SLinus Torvalds 7531da177e4SLinus Torvalds if (!inode->i_nlink) 7541da177e4SLinus Torvalds memset (ufs_inode, 0, sizeof(struct ufs_inode)); 7553313e292SEvgeniy Dushistov } 7563313e292SEvgeniy Dushistov 7573313e292SEvgeniy Dushistov static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode) 7583313e292SEvgeniy Dushistov { 7593313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 7603313e292SEvgeniy Dushistov struct ufs_inode_info *ufsi = UFS_I(inode); 7613313e292SEvgeniy Dushistov 7623313e292SEvgeniy Dushistov UFSD("ENTER\n"); 7633313e292SEvgeniy Dushistov ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 7643313e292SEvgeniy Dushistov ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 7653313e292SEvgeniy Dushistov 76672235465SEric W. Biederman ufs_inode->ui_uid = cpu_to_fs32(sb, i_uid_read(inode)); 76772235465SEric W. Biederman ufs_inode->ui_gid = cpu_to_fs32(sb, i_gid_read(inode)); 7683313e292SEvgeniy Dushistov 7693313e292SEvgeniy Dushistov ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 7702189850fSEvgeniy Dushistov ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec); 7712189850fSEvgeniy Dushistov ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec); 7722189850fSEvgeniy Dushistov ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec); 7732189850fSEvgeniy Dushistov ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec); 7742189850fSEvgeniy Dushistov ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec); 7752189850fSEvgeniy Dushistov ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec); 7763313e292SEvgeniy Dushistov 7773313e292SEvgeniy Dushistov ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks); 7783313e292SEvgeniy Dushistov ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 7793313e292SEvgeniy Dushistov ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); 7803313e292SEvgeniy Dushistov 7813313e292SEvgeniy Dushistov if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 7823313e292SEvgeniy Dushistov /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 7833313e292SEvgeniy Dushistov ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0]; 7843313e292SEvgeniy Dushistov } else if (inode->i_blocks) { 785f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data, 786f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 7873313e292SEvgeniy Dushistov } else { 788f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, 789f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink)); 7903313e292SEvgeniy Dushistov } 7913313e292SEvgeniy Dushistov 7923313e292SEvgeniy Dushistov if (!inode->i_nlink) 7933313e292SEvgeniy Dushistov memset (ufs_inode, 0, sizeof(struct ufs2_inode)); 7943313e292SEvgeniy Dushistov UFSD("EXIT\n"); 7953313e292SEvgeniy Dushistov } 7963313e292SEvgeniy Dushistov 7973313e292SEvgeniy Dushistov static int ufs_update_inode(struct inode * inode, int do_sync) 7983313e292SEvgeniy Dushistov { 7993313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 8003313e292SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 8013313e292SEvgeniy Dushistov struct buffer_head * bh; 8023313e292SEvgeniy Dushistov 8033313e292SEvgeniy Dushistov UFSD("ENTER, ino %lu\n", inode->i_ino); 8043313e292SEvgeniy Dushistov 8053313e292SEvgeniy Dushistov if (inode->i_ino < UFS_ROOTINO || 8063313e292SEvgeniy Dushistov inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { 8073313e292SEvgeniy Dushistov ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); 8083313e292SEvgeniy Dushistov return -1; 8093313e292SEvgeniy Dushistov } 8103313e292SEvgeniy Dushistov 8113313e292SEvgeniy Dushistov bh = sb_bread(sb, ufs_inotofsba(inode->i_ino)); 8123313e292SEvgeniy Dushistov if (!bh) { 8133313e292SEvgeniy Dushistov ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); 8143313e292SEvgeniy Dushistov return -1; 8153313e292SEvgeniy Dushistov } 8163313e292SEvgeniy Dushistov if (uspi->fs_magic == UFS2_MAGIC) { 8173313e292SEvgeniy Dushistov struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 8183313e292SEvgeniy Dushistov 8193313e292SEvgeniy Dushistov ufs2_update_inode(inode, 8203313e292SEvgeniy Dushistov ufs2_inode + ufs_inotofsbo(inode->i_ino)); 8213313e292SEvgeniy Dushistov } else { 8223313e292SEvgeniy Dushistov struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data; 8233313e292SEvgeniy Dushistov 8243313e292SEvgeniy Dushistov ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino)); 8253313e292SEvgeniy Dushistov } 8261da177e4SLinus Torvalds 8271da177e4SLinus Torvalds mark_buffer_dirty(bh); 8281da177e4SLinus Torvalds if (do_sync) 8291da177e4SLinus Torvalds sync_dirty_buffer(bh); 8301da177e4SLinus Torvalds brelse (bh); 8311da177e4SLinus Torvalds 832abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 8331da177e4SLinus Torvalds return 0; 8341da177e4SLinus Torvalds } 8351da177e4SLinus Torvalds 836a9185b41SChristoph Hellwig int ufs_write_inode(struct inode *inode, struct writeback_control *wbc) 8371da177e4SLinus Torvalds { 838f3e0f3daSAl Viro return ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL); 8391da177e4SLinus Torvalds } 8401da177e4SLinus Torvalds 8411da177e4SLinus Torvalds int ufs_sync_inode (struct inode *inode) 8421da177e4SLinus Torvalds { 8431da177e4SLinus Torvalds return ufs_update_inode (inode, 1); 8441da177e4SLinus Torvalds } 8451da177e4SLinus Torvalds 84658e8268cSAl Viro void ufs_evict_inode(struct inode * inode) 8471da177e4SLinus Torvalds { 84858e8268cSAl Viro int want_delete = 0; 84958e8268cSAl Viro 85058e8268cSAl Viro if (!inode->i_nlink && !is_bad_inode(inode)) 85158e8268cSAl Viro want_delete = 1; 85210e5dce0SEvgeniy Dushistov 85391b0abe3SJohannes Weiner truncate_inode_pages_final(&inode->i_data); 85458e8268cSAl Viro if (want_delete) { 8551da177e4SLinus Torvalds inode->i_size = 0; 856babef37dSAl Viro if (inode->i_blocks && 857babef37dSAl Viro (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 858babef37dSAl Viro S_ISLNK(inode->i_mode))) 859d622f167SAl Viro ufs_truncate_blocks(inode); 86067a70017SAl Viro ufs_update_inode(inode, inode_needs_sync(inode)); 86158e8268cSAl Viro } 86258e8268cSAl Viro 86358e8268cSAl Viro invalidate_inode_buffers(inode); 864dbd5768fSJan Kara clear_inode(inode); 86558e8268cSAl Viro 866f3e0f3daSAl Viro if (want_delete) 8671da177e4SLinus Torvalds ufs_free_inode(inode); 8681da177e4SLinus Torvalds } 869010d331fSAl Viro 870a138b4b6SAl Viro struct to_free { 871a138b4b6SAl Viro struct inode *inode; 872a138b4b6SAl Viro u64 to; 873a138b4b6SAl Viro unsigned count; 874a138b4b6SAl Viro }; 875a138b4b6SAl Viro 876a138b4b6SAl Viro static inline void free_data(struct to_free *ctx, u64 from, unsigned count) 877a138b4b6SAl Viro { 878a138b4b6SAl Viro if (ctx->count && ctx->to != from) { 879a138b4b6SAl Viro ufs_free_blocks(ctx->inode, ctx->to - ctx->count, ctx->count); 880a138b4b6SAl Viro ctx->count = 0; 881a138b4b6SAl Viro } 882a138b4b6SAl Viro ctx->count += count; 883a138b4b6SAl Viro ctx->to = from + count; 884a138b4b6SAl Viro } 885a138b4b6SAl Viro 886010d331fSAl Viro #define DIRECT_FRAGMENT ((inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift) 887010d331fSAl Viro 888010d331fSAl Viro static void ufs_trunc_direct(struct inode *inode) 889010d331fSAl Viro { 890010d331fSAl Viro struct ufs_inode_info *ufsi = UFS_I(inode); 891010d331fSAl Viro struct super_block * sb; 892010d331fSAl Viro struct ufs_sb_private_info * uspi; 893010d331fSAl Viro void *p; 894010d331fSAl Viro u64 frag1, frag2, frag3, frag4, block1, block2; 895a138b4b6SAl Viro struct to_free ctx = {.inode = inode}; 896010d331fSAl Viro unsigned i, tmp; 897010d331fSAl Viro 898010d331fSAl Viro UFSD("ENTER: ino %lu\n", inode->i_ino); 899010d331fSAl Viro 900010d331fSAl Viro sb = inode->i_sb; 901010d331fSAl Viro uspi = UFS_SB(sb)->s_uspi; 902010d331fSAl Viro 903010d331fSAl Viro frag1 = DIRECT_FRAGMENT; 904010d331fSAl Viro frag4 = min_t(u64, UFS_NDIR_FRAGMENT, ufsi->i_lastfrag); 905010d331fSAl Viro frag2 = ((frag1 & uspi->s_fpbmask) ? ((frag1 | uspi->s_fpbmask) + 1) : frag1); 906010d331fSAl Viro frag3 = frag4 & ~uspi->s_fpbmask; 907010d331fSAl Viro block1 = block2 = 0; 908010d331fSAl Viro if (frag2 > frag3) { 909010d331fSAl Viro frag2 = frag4; 910010d331fSAl Viro frag3 = frag4 = 0; 911010d331fSAl Viro } else if (frag2 < frag3) { 912010d331fSAl Viro block1 = ufs_fragstoblks (frag2); 913010d331fSAl Viro block2 = ufs_fragstoblks (frag3); 914010d331fSAl Viro } 915010d331fSAl Viro 916010d331fSAl Viro UFSD("ino %lu, frag1 %llu, frag2 %llu, block1 %llu, block2 %llu," 917010d331fSAl Viro " frag3 %llu, frag4 %llu\n", inode->i_ino, 918010d331fSAl Viro (unsigned long long)frag1, (unsigned long long)frag2, 919010d331fSAl Viro (unsigned long long)block1, (unsigned long long)block2, 920010d331fSAl Viro (unsigned long long)frag3, (unsigned long long)frag4); 921010d331fSAl Viro 922010d331fSAl Viro if (frag1 >= frag2) 923010d331fSAl Viro goto next1; 924010d331fSAl Viro 925010d331fSAl Viro /* 926010d331fSAl Viro * Free first free fragments 927010d331fSAl Viro */ 928010d331fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag1)); 929010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 930010d331fSAl Viro if (!tmp ) 931010d331fSAl Viro ufs_panic (sb, "ufs_trunc_direct", "internal error"); 932010d331fSAl Viro frag2 -= frag1; 933010d331fSAl Viro frag1 = ufs_fragnum (frag1); 934010d331fSAl Viro 935010d331fSAl Viro ufs_free_fragments(inode, tmp + frag1, frag2); 936010d331fSAl Viro 937010d331fSAl Viro next1: 938010d331fSAl Viro /* 939010d331fSAl Viro * Free whole blocks 940010d331fSAl Viro */ 941010d331fSAl Viro for (i = block1 ; i < block2; i++) { 942010d331fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, i); 943010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 944010d331fSAl Viro if (!tmp) 945010d331fSAl Viro continue; 946010d331fSAl Viro write_seqlock(&ufsi->meta_lock); 947010d331fSAl Viro ufs_data_ptr_clear(uspi, p); 948010d331fSAl Viro write_sequnlock(&ufsi->meta_lock); 949010d331fSAl Viro 950a138b4b6SAl Viro free_data(&ctx, tmp, uspi->s_fpb); 951010d331fSAl Viro } 952010d331fSAl Viro 953a138b4b6SAl Viro free_data(&ctx, 0, 0); 954010d331fSAl Viro 955010d331fSAl Viro if (frag3 >= frag4) 956010d331fSAl Viro goto next3; 957010d331fSAl Viro 958010d331fSAl Viro /* 959010d331fSAl Viro * Free last free fragments 960010d331fSAl Viro */ 961010d331fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag3)); 962010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 963010d331fSAl Viro if (!tmp ) 964010d331fSAl Viro ufs_panic(sb, "ufs_truncate_direct", "internal error"); 965010d331fSAl Viro frag4 = ufs_fragnum (frag4); 966010d331fSAl Viro write_seqlock(&ufsi->meta_lock); 967010d331fSAl Viro ufs_data_ptr_clear(uspi, p); 968010d331fSAl Viro write_sequnlock(&ufsi->meta_lock); 969010d331fSAl Viro 970010d331fSAl Viro ufs_free_fragments (inode, tmp, frag4); 971010d331fSAl Viro next3: 972010d331fSAl Viro 973010d331fSAl Viro UFSD("EXIT: ino %lu\n", inode->i_ino); 974010d331fSAl Viro } 975010d331fSAl Viro 976163073dbSAl Viro static void free_full_branch(struct inode *inode, u64 ind_block, int depth) 977010d331fSAl Viro { 9786ac36b87SAl Viro struct super_block *sb = inode->i_sb; 9796ac36b87SAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 980163073dbSAl Viro struct ufs_buffer_head *ubh = ubh_bread(sb, ind_block, uspi->s_bsize); 9816ac36b87SAl Viro unsigned i; 982010d331fSAl Viro 983163073dbSAl Viro if (!ubh) 984010d331fSAl Viro return; 985010d331fSAl Viro 9869e0fbbdeSAl Viro if (--depth) { 9876d1ebbcaSAl Viro for (i = 0; i < uspi->s_apb; i++) { 988163073dbSAl Viro void *p = ubh_get_data_ptr(uspi, ubh, i); 989163073dbSAl Viro u64 block = ufs_data_ptr_to_cpu(sb, p); 990cc7231e3SAl Viro if (block) 991163073dbSAl Viro free_full_branch(inode, block, depth); 992163073dbSAl Viro } 9936d1ebbcaSAl Viro } else { 9946d1ebbcaSAl Viro struct to_free ctx = {.inode = inode}; 9956d1ebbcaSAl Viro 9966d1ebbcaSAl Viro for (i = 0; i < uspi->s_apb; i++) { 997163073dbSAl Viro void *p = ubh_get_data_ptr(uspi, ubh, i); 998163073dbSAl Viro u64 block = ufs_data_ptr_to_cpu(sb, p); 999cc7231e3SAl Viro if (block) 1000163073dbSAl Viro free_data(&ctx, block, uspi->s_fpb); 10016d1ebbcaSAl Viro } 10026d1ebbcaSAl Viro free_data(&ctx, 0, 0); 10036d1ebbcaSAl Viro } 10046d1ebbcaSAl Viro 10056d1ebbcaSAl Viro ubh_bforget(ubh); 1006163073dbSAl Viro ufs_free_blocks(inode, ind_block, uspi->s_fpb); 10076d1ebbcaSAl Viro } 10086d1ebbcaSAl Viro 10097b4e4f7fSAl Viro static void free_branch_tail(struct inode *inode, unsigned from, struct ufs_buffer_head *ubh, int depth) 10106d1ebbcaSAl Viro { 10116d1ebbcaSAl Viro struct super_block *sb = inode->i_sb; 10126d1ebbcaSAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 10136d1ebbcaSAl Viro unsigned i; 10146d1ebbcaSAl Viro 10156aab6dd3SAl Viro if (--depth) { 1016a9657423SAl Viro for (i = from; i < uspi->s_apb ; i++) { 1017163073dbSAl Viro void *p = ubh_get_data_ptr(uspi, ubh, i); 1018163073dbSAl Viro u64 block = ufs_data_ptr_to_cpu(sb, p); 1019163073dbSAl Viro if (block) { 1020163073dbSAl Viro write_seqlock(&UFS_I(inode)->meta_lock); 1021163073dbSAl Viro ufs_data_ptr_clear(uspi, p); 1022163073dbSAl Viro write_sequnlock(&UFS_I(inode)->meta_lock); 1023a9657423SAl Viro ubh_mark_buffer_dirty(ubh); 1024163073dbSAl Viro free_full_branch(inode, block, depth); 1025163073dbSAl Viro } 1026a9657423SAl Viro } 10279e0fbbdeSAl Viro } else { 1028a138b4b6SAl Viro struct to_free ctx = {.inode = inode}; 10299e0fbbdeSAl Viro 10306ac36b87SAl Viro for (i = from; i < uspi->s_apb; i++) { 1031163073dbSAl Viro void *p = ubh_get_data_ptr(uspi, ubh, i); 1032163073dbSAl Viro u64 block = ufs_data_ptr_to_cpu(sb, p); 1033163073dbSAl Viro if (block) { 1034010d331fSAl Viro write_seqlock(&UFS_I(inode)->meta_lock); 1035163073dbSAl Viro ufs_data_ptr_clear(uspi, p); 1036010d331fSAl Viro write_sequnlock(&UFS_I(inode)->meta_lock); 10379e0fbbdeSAl Viro ubh_mark_buffer_dirty(ubh); 1038163073dbSAl Viro free_data(&ctx, block, uspi->s_fpb); 1039010d331fSAl Viro } 1040163073dbSAl Viro } 1041a138b4b6SAl Viro free_data(&ctx, 0, 0); 1042010d331fSAl Viro } 10439e0fbbdeSAl Viro if (IS_SYNC(inode) && ubh_buffer_dirty(ubh)) 10449e0fbbdeSAl Viro ubh_sync_block(ubh); 10459e0fbbdeSAl Viro ubh_brelse(ubh); 1046010d331fSAl Viro } 1047010d331fSAl Viro 1048010d331fSAl Viro static int ufs_alloc_lastblock(struct inode *inode, loff_t size) 1049010d331fSAl Viro { 1050010d331fSAl Viro int err = 0; 1051010d331fSAl Viro struct super_block *sb = inode->i_sb; 1052010d331fSAl Viro struct address_space *mapping = inode->i_mapping; 1053010d331fSAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 1054010d331fSAl Viro unsigned i, end; 1055010d331fSAl Viro sector_t lastfrag; 1056010d331fSAl Viro struct page *lastpage; 1057010d331fSAl Viro struct buffer_head *bh; 1058010d331fSAl Viro u64 phys64; 1059010d331fSAl Viro 1060010d331fSAl Viro lastfrag = (size + uspi->s_fsize - 1) >> uspi->s_fshift; 1061010d331fSAl Viro 1062010d331fSAl Viro if (!lastfrag) 1063010d331fSAl Viro goto out; 1064010d331fSAl Viro 1065010d331fSAl Viro lastfrag--; 1066010d331fSAl Viro 1067010d331fSAl Viro lastpage = ufs_get_locked_page(mapping, lastfrag >> 106809cbfeafSKirill A. Shutemov (PAGE_SHIFT - inode->i_blkbits)); 1069010d331fSAl Viro if (IS_ERR(lastpage)) { 1070010d331fSAl Viro err = -EIO; 1071010d331fSAl Viro goto out; 1072010d331fSAl Viro } 1073010d331fSAl Viro 107409cbfeafSKirill A. Shutemov end = lastfrag & ((1 << (PAGE_SHIFT - inode->i_blkbits)) - 1); 1075010d331fSAl Viro bh = page_buffers(lastpage); 1076010d331fSAl Viro for (i = 0; i < end; ++i) 1077010d331fSAl Viro bh = bh->b_this_page; 1078010d331fSAl Viro 1079010d331fSAl Viro 1080010d331fSAl Viro err = ufs_getfrag_block(inode, lastfrag, bh, 1); 1081010d331fSAl Viro 1082010d331fSAl Viro if (unlikely(err)) 1083010d331fSAl Viro goto out_unlock; 1084010d331fSAl Viro 1085010d331fSAl Viro if (buffer_new(bh)) { 1086010d331fSAl Viro clear_buffer_new(bh); 1087e64855c6SJan Kara clean_bdev_bh_alias(bh); 1088010d331fSAl Viro /* 1089010d331fSAl Viro * we do not zeroize fragment, because of 1090010d331fSAl Viro * if it maped to hole, it already contains zeroes 1091010d331fSAl Viro */ 1092010d331fSAl Viro set_buffer_uptodate(bh); 1093010d331fSAl Viro mark_buffer_dirty(bh); 1094010d331fSAl Viro set_page_dirty(lastpage); 1095010d331fSAl Viro } 1096010d331fSAl Viro 1097010d331fSAl Viro if (lastfrag >= UFS_IND_FRAGMENT) { 1098010d331fSAl Viro end = uspi->s_fpb - ufs_fragnum(lastfrag) - 1; 1099010d331fSAl Viro phys64 = bh->b_blocknr + 1; 1100010d331fSAl Viro for (i = 0; i < end; ++i) { 1101010d331fSAl Viro bh = sb_getblk(sb, i + phys64); 1102010d331fSAl Viro lock_buffer(bh); 1103010d331fSAl Viro memset(bh->b_data, 0, sb->s_blocksize); 1104010d331fSAl Viro set_buffer_uptodate(bh); 1105010d331fSAl Viro mark_buffer_dirty(bh); 1106010d331fSAl Viro unlock_buffer(bh); 1107010d331fSAl Viro sync_dirty_buffer(bh); 1108010d331fSAl Viro brelse(bh); 1109010d331fSAl Viro } 1110010d331fSAl Viro } 1111010d331fSAl Viro out_unlock: 1112010d331fSAl Viro ufs_put_locked_page(lastpage); 1113010d331fSAl Viro out: 1114010d331fSAl Viro return err; 1115010d331fSAl Viro } 1116010d331fSAl Viro 1117babef37dSAl Viro static void ufs_truncate_blocks(struct inode *inode) 1118010d331fSAl Viro { 1119010d331fSAl Viro struct ufs_inode_info *ufsi = UFS_I(inode); 1120010d331fSAl Viro struct super_block *sb = inode->i_sb; 1121010d331fSAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 11227bad5939SAl Viro unsigned offsets[4]; 1123a8fad984SAl Viro int depth; 11246775e24dSAl Viro int depth2; 112542432739SAl Viro unsigned i; 11267b4e4f7fSAl Viro struct ufs_buffer_head *ubh[3]; 11277b4e4f7fSAl Viro void *p; 11287b4e4f7fSAl Viro u64 block; 11296775e24dSAl Viro 1130a8fad984SAl Viro if (inode->i_size) { 1131a8fad984SAl Viro sector_t last = (inode->i_size - 1) >> uspi->s_bshift; 1132a8fad984SAl Viro depth = ufs_block_to_path(inode, last, offsets); 11336775e24dSAl Viro if (!depth) 11346775e24dSAl Viro return; 1135a8fad984SAl Viro } else { 1136a8fad984SAl Viro depth = 1; 1137a8fad984SAl Viro } 11386775e24dSAl Viro 11396775e24dSAl Viro for (depth2 = depth - 1; depth2; depth2--) 1140a8fad984SAl Viro if (offsets[depth2] != uspi->s_apb - 1) 11416775e24dSAl Viro break; 1142010d331fSAl Viro 1143010d331fSAl Viro mutex_lock(&ufsi->truncate_mutex); 114442432739SAl Viro if (depth == 1) { 1145010d331fSAl Viro ufs_trunc_direct(inode); 114642432739SAl Viro offsets[0] = UFS_IND_BLOCK; 114742432739SAl Viro } else { 11487b4e4f7fSAl Viro /* get the blocks that should be partially emptied */ 1149a8fad984SAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, offsets[0]++); 11507b4e4f7fSAl Viro for (i = 0; i < depth2; i++) { 11517b4e4f7fSAl Viro block = ufs_data_ptr_to_cpu(sb, p); 11527b4e4f7fSAl Viro if (!block) 11537b4e4f7fSAl Viro break; 11547b4e4f7fSAl Viro ubh[i] = ubh_bread(sb, block, uspi->s_bsize); 11557b4e4f7fSAl Viro if (!ubh[i]) { 11567b4e4f7fSAl Viro write_seqlock(&ufsi->meta_lock); 11577b4e4f7fSAl Viro ufs_data_ptr_clear(uspi, p); 11587b4e4f7fSAl Viro write_sequnlock(&ufsi->meta_lock); 11597b4e4f7fSAl Viro break; 11607b4e4f7fSAl Viro } 1161a8fad984SAl Viro p = ubh_get_data_ptr(uspi, ubh[i], offsets[i + 1]++); 11627b4e4f7fSAl Viro } 1163f53bd142SAl Viro while (i--) 11647b4e4f7fSAl Viro free_branch_tail(inode, offsets[i + 1], ubh[i], depth - i - 1); 11657b4e4f7fSAl Viro } 116642432739SAl Viro for (i = offsets[0]; i <= UFS_TIND_BLOCK; i++) { 1167163073dbSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, i); 1168163073dbSAl Viro block = ufs_data_ptr_to_cpu(sb, p); 1169163073dbSAl Viro if (block) { 1170163073dbSAl Viro write_seqlock(&ufsi->meta_lock); 1171163073dbSAl Viro ufs_data_ptr_clear(uspi, p); 1172163073dbSAl Viro write_sequnlock(&ufsi->meta_lock); 1173163073dbSAl Viro free_full_branch(inode, block, i - UFS_IND_BLOCK + 1); 1174163073dbSAl Viro } 117542432739SAl Viro } 117609bf4f5bSAl Viro read_seqlock_excl(&ufsi->meta_lock); 1177010d331fSAl Viro ufsi->i_lastfrag = DIRECT_FRAGMENT; 117809bf4f5bSAl Viro read_sequnlock_excl(&ufsi->meta_lock); 1179b6eede0eSAl Viro mark_inode_dirty(inode); 1180010d331fSAl Viro mutex_unlock(&ufsi->truncate_mutex); 1181010d331fSAl Viro } 1182010d331fSAl Viro 1183010d331fSAl Viro static int ufs_truncate(struct inode *inode, loff_t size) 1184010d331fSAl Viro { 1185010d331fSAl Viro int err = 0; 1186010d331fSAl Viro 1187010d331fSAl Viro UFSD("ENTER: ino %lu, i_size: %llu, old_i_size: %llu\n", 1188010d331fSAl Viro inode->i_ino, (unsigned long long)size, 1189010d331fSAl Viro (unsigned long long)i_size_read(inode)); 1190010d331fSAl Viro 1191010d331fSAl Viro if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1192010d331fSAl Viro S_ISLNK(inode->i_mode))) 1193010d331fSAl Viro return -EINVAL; 1194010d331fSAl Viro if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) 1195010d331fSAl Viro return -EPERM; 1196010d331fSAl Viro 1197010d331fSAl Viro err = ufs_alloc_lastblock(inode, size); 1198010d331fSAl Viro 1199010d331fSAl Viro if (err) 1200010d331fSAl Viro goto out; 1201010d331fSAl Viro 1202010d331fSAl Viro block_truncate_page(inode->i_mapping, size, ufs_getfrag_block); 1203010d331fSAl Viro 1204010d331fSAl Viro truncate_setsize(inode, size); 1205010d331fSAl Viro 1206babef37dSAl Viro ufs_truncate_blocks(inode); 120702027d42SDeepa Dinamani inode->i_mtime = inode->i_ctime = current_time(inode); 1208010d331fSAl Viro mark_inode_dirty(inode); 1209010d331fSAl Viro out: 1210010d331fSAl Viro UFSD("EXIT: err %d\n", err); 1211010d331fSAl Viro return err; 1212010d331fSAl Viro } 1213010d331fSAl Viro 1214*549c7297SChristian Brauner int ufs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, 1215*549c7297SChristian Brauner struct iattr *attr) 1216010d331fSAl Viro { 1217010d331fSAl Viro struct inode *inode = d_inode(dentry); 1218010d331fSAl Viro unsigned int ia_valid = attr->ia_valid; 1219010d331fSAl Viro int error; 1220010d331fSAl Viro 12212f221d6fSChristian Brauner error = setattr_prepare(&init_user_ns, dentry, attr); 1222010d331fSAl Viro if (error) 1223010d331fSAl Viro return error; 1224010d331fSAl Viro 1225010d331fSAl Viro if (ia_valid & ATTR_SIZE && attr->ia_size != inode->i_size) { 1226010d331fSAl Viro error = ufs_truncate(inode, attr->ia_size); 1227010d331fSAl Viro if (error) 1228010d331fSAl Viro return error; 1229010d331fSAl Viro } 1230010d331fSAl Viro 12312f221d6fSChristian Brauner setattr_copy(&init_user_ns, inode, attr); 1232010d331fSAl Viro mark_inode_dirty(inode); 1233010d331fSAl Viro return 0; 1234010d331fSAl Viro } 1235010d331fSAl Viro 1236010d331fSAl Viro const struct inode_operations ufs_file_inode_operations = { 1237010d331fSAl Viro .setattr = ufs_setattr, 1238010d331fSAl Viro }; 1239