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 2080f3c1294SAl Viro /* 2090f3c1294SAl Viro * Unpacking tails: we have a file with partial final block and 2100f3c1294SAl Viro * we had been asked to extend it. If the fragment being written 2110f3c1294SAl Viro * is within the same block, we need to extend the tail just to cover 2120f3c1294SAl Viro * that fragment. Otherwise the tail is extended to full block. 2130f3c1294SAl Viro * 2140f3c1294SAl Viro * Note that we might need to create a _new_ tail, but that will 2150f3c1294SAl Viro * be handled elsewhere; this is strictly for resizing old 2160f3c1294SAl Viro * ones. 2170f3c1294SAl Viro */ 2180f3c1294SAl Viro static bool 2190f3c1294SAl Viro ufs_extend_tail(struct inode *inode, u64 writes_to, 2200f3c1294SAl Viro int *err, struct page *locked_page) 2210f3c1294SAl Viro { 2220f3c1294SAl Viro struct ufs_inode_info *ufsi = UFS_I(inode); 2230f3c1294SAl Viro struct super_block *sb = inode->i_sb; 2240f3c1294SAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 2250f3c1294SAl Viro unsigned lastfrag = ufsi->i_lastfrag; /* it's a short file, so unsigned is enough */ 2260f3c1294SAl Viro unsigned block = ufs_fragstoblks(lastfrag); 2270f3c1294SAl Viro unsigned new_size; 2280f3c1294SAl Viro void *p; 2290f3c1294SAl Viro u64 tmp; 2300f3c1294SAl Viro 2310f3c1294SAl Viro if (writes_to < (lastfrag | uspi->s_fpbmask)) 2320f3c1294SAl Viro new_size = (writes_to & uspi->s_fpbmask) + 1; 2330f3c1294SAl Viro else 2340f3c1294SAl Viro new_size = uspi->s_fpb; 2350f3c1294SAl Viro 2360f3c1294SAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, block); 2370f3c1294SAl Viro tmp = ufs_new_fragments(inode, p, lastfrag, ufs_data_ptr_to_cpu(sb, p), 2380f3c1294SAl Viro new_size, err, locked_page); 2390f3c1294SAl Viro return tmp != 0; 2400f3c1294SAl Viro } 2410f3c1294SAl Viro 242022a6dc5SEvgeniy Dushistov /** 243022a6dc5SEvgeniy Dushistov * ufs_inode_getfrag() - allocate new fragment(s) 244edc023caSFabian Frederick * @inode: pointer to inode 2455336970bSAl Viro * @index: number of block pointer within the inode's array. 246edc023caSFabian Frederick * @new_fragment: number of new allocated fragment(s) 247edc023caSFabian Frederick * @err: we set it if something wrong 248edc023caSFabian Frederick * @phys: pointer to where we save physical number of new allocated fragments, 249022a6dc5SEvgeniy Dushistov * NULL if we allocate not data(indirect blocks for example). 250edc023caSFabian Frederick * @new: we set it if we allocate new block 251edc023caSFabian Frederick * @locked_page: for ufs_new_fragments() 252022a6dc5SEvgeniy Dushistov */ 253177848a0SAl Viro static u64 2545336970bSAl Viro ufs_inode_getfrag(struct inode *inode, unsigned index, 2555336970bSAl Viro sector_t new_fragment, int *err, 2566ef4d6bfSEvgeniy Dushistov long *phys, int *new, struct page *locked_page) 2571da177e4SLinus Torvalds { 2581da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 259022a6dc5SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 260022a6dc5SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 2615336970bSAl Viro u64 tmp, goal, lastfrag; 2620f3c1294SAl Viro unsigned nfrags = uspi->s_fpb; 2630f3c1294SAl Viro void *p; 2641da177e4SLinus Torvalds 2651da177e4SLinus Torvalds /* TODO : to be done for write support 2661da177e4SLinus Torvalds if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 2671da177e4SLinus Torvalds goto ufs2; 2681da177e4SLinus Torvalds */ 2691da177e4SLinus Torvalds 2705336970bSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, index); 27154fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, p); 2720f3c1294SAl Viro if (tmp) 273bbb3eb9dSAl Viro goto out; 2741da177e4SLinus Torvalds 2751da177e4SLinus Torvalds lastfrag = ufsi->i_lastfrag; 2760f3c1294SAl Viro 2770f3c1294SAl Viro /* will that be a new tail? */ 2780f3c1294SAl Viro if (new_fragment < UFS_NDIR_FRAGMENT && new_fragment >= lastfrag) 2790f3c1294SAl Viro nfrags = (new_fragment & uspi->s_fpbmask) + 1; 2800f3c1294SAl Viro 2810f3c1294SAl Viro goal = 0; 2825336970bSAl Viro if (index) { 2830f3c1294SAl Viro goal = ufs_data_ptr_to_cpu(sb, 2845336970bSAl Viro ufs_get_direct_data_ptr(uspi, ufsi, index - 1)); 2850f3c1294SAl Viro if (goal) 2860f3c1294SAl Viro goal += uspi->s_fpb; 287c37336b0SEvgeniy Dushistov } 2885336970bSAl Viro tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), 289a685e26fSEvgeniy Dushistov goal, uspi->s_fpb, err, 290a685e26fSEvgeniy Dushistov phys != NULL ? locked_page : NULL); 2910f3c1294SAl Viro 2921da177e4SLinus Torvalds if (!tmp) { 2931da177e4SLinus Torvalds *err = -ENOSPC; 294177848a0SAl Viro return 0; 2951da177e4SLinus Torvalds } 2961da177e4SLinus Torvalds 297bbb3eb9dSAl Viro if (phys) { 2981da177e4SLinus Torvalds *err = 0; 2991da177e4SLinus Torvalds *new = 1; 3001da177e4SLinus Torvalds } 3011da177e4SLinus Torvalds inode->i_ctime = CURRENT_TIME_SEC; 3021da177e4SLinus Torvalds if (IS_SYNC(inode)) 3031da177e4SLinus Torvalds ufs_sync_inode (inode); 3041da177e4SLinus Torvalds mark_inode_dirty(inode); 305bbb3eb9dSAl Viro out: 306177848a0SAl Viro return tmp + uspi->s_sbbase; 3071da177e4SLinus Torvalds 3081da177e4SLinus Torvalds /* This part : To be implemented .... 3091da177e4SLinus Torvalds Required only for writing, not required for READ-ONLY. 3101da177e4SLinus Torvalds ufs2: 3111da177e4SLinus Torvalds 3121da177e4SLinus Torvalds u2_block = ufs_fragstoblks(fragment); 3131da177e4SLinus Torvalds u2_blockoff = ufs_fragnum(fragment); 3141da177e4SLinus Torvalds p = ufsi->i_u1.u2_i_data + block; 3151da177e4SLinus Torvalds goal = 0; 3161da177e4SLinus Torvalds 3171da177e4SLinus Torvalds repeat2: 3181da177e4SLinus Torvalds tmp = fs32_to_cpu(sb, *p); 3191da177e4SLinus Torvalds lastfrag = ufsi->i_lastfrag; 3201da177e4SLinus Torvalds 3211da177e4SLinus Torvalds */ 3221da177e4SLinus Torvalds } 3231da177e4SLinus Torvalds 324022a6dc5SEvgeniy Dushistov /** 325022a6dc5SEvgeniy Dushistov * ufs_inode_getblock() - allocate new block 326edc023caSFabian Frederick * @inode: pointer to inode 327619cfac0SAl Viro * @ind_block: block number of the indirect block 328619cfac0SAl Viro * @index: number of pointer within the indirect block 329edc023caSFabian Frederick * @new_fragment: number of new allocated fragment 330022a6dc5SEvgeniy Dushistov * (block will hold this fragment and also uspi->s_fpb-1) 331edc023caSFabian Frederick * @err: see ufs_inode_getfrag() 332edc023caSFabian Frederick * @phys: see ufs_inode_getfrag() 333edc023caSFabian Frederick * @new: see ufs_inode_getfrag() 334edc023caSFabian Frederick * @locked_page: see ufs_inode_getfrag() 335022a6dc5SEvgeniy Dushistov */ 336177848a0SAl Viro static u64 337619cfac0SAl Viro ufs_inode_getblock(struct inode *inode, u64 ind_block, 338721435a7SAl Viro unsigned index, sector_t new_fragment, int *err, 3396ef4d6bfSEvgeniy Dushistov long *phys, int *new, struct page *locked_page) 3401da177e4SLinus Torvalds { 341022a6dc5SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 342022a6dc5SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 343619cfac0SAl Viro int shift = uspi->s_apbshift - uspi->s_fpbshift; 344721435a7SAl Viro u64 tmp = 0, goal; 345619cfac0SAl Viro struct buffer_head *bh; 34654fb996aSEvgeniy Dushistov void *p; 3471da177e4SLinus Torvalds 348619cfac0SAl Viro if (!ind_block) 349619cfac0SAl Viro return 0; 350619cfac0SAl Viro 351619cfac0SAl Viro bh = sb_bread(sb, ind_block + (index >> shift)); 352619cfac0SAl Viro if (unlikely(!bh)) 353619cfac0SAl Viro return 0; 354619cfac0SAl Viro 355619cfac0SAl Viro index &= uspi->s_apbmask >> uspi->s_fpbshift; 35654fb996aSEvgeniy Dushistov if (uspi->fs_magic == UFS2_MAGIC) 357721435a7SAl Viro p = (__fs64 *)bh->b_data + index; 35854fb996aSEvgeniy Dushistov else 359721435a7SAl Viro p = (__fs32 *)bh->b_data + index; 3605a39c255SAl Viro 36154fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, p); 362bbb3eb9dSAl Viro if (tmp) 3631da177e4SLinus Torvalds goto out; 3641da177e4SLinus Torvalds 365721435a7SAl Viro if (index && (uspi->fs_magic == UFS2_MAGIC ? 366721435a7SAl Viro (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[index-1])) : 367721435a7SAl Viro (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[index-1])))) 3681da177e4SLinus Torvalds goal = tmp + uspi->s_fpb; 3691da177e4SLinus Torvalds else 3701da177e4SLinus Torvalds goal = bh->b_blocknr + uspi->s_fpb; 3716ef4d6bfSEvgeniy Dushistov tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal, 3726ef4d6bfSEvgeniy Dushistov uspi->s_fpb, err, locked_page); 3735a39c255SAl Viro if (!tmp) 3741da177e4SLinus Torvalds goto out; 375c9a27b5dSEvgeniy Dushistov 376bbb3eb9dSAl Viro if (new) 3771da177e4SLinus Torvalds *new = 1; 3781da177e4SLinus Torvalds 3791da177e4SLinus Torvalds mark_buffer_dirty(bh); 3801da177e4SLinus Torvalds if (IS_SYNC(inode)) 3811da177e4SLinus Torvalds sync_dirty_buffer(bh); 3821da177e4SLinus Torvalds inode->i_ctime = CURRENT_TIME_SEC; 3831da177e4SLinus Torvalds mark_inode_dirty(inode); 3841da177e4SLinus Torvalds out: 3851da177e4SLinus Torvalds brelse (bh); 386abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 387177848a0SAl Viro if (tmp) 388177848a0SAl Viro tmp += uspi->s_sbbase; 389177848a0SAl Viro return tmp; 3901da177e4SLinus Torvalds } 3911da177e4SLinus Torvalds 392022a6dc5SEvgeniy Dushistov /** 3937422caa5SAlessio Igor Bogani * ufs_getfrag_block() - `get_block_t' function, interface between UFS and 394022a6dc5SEvgeniy Dushistov * readpage, writepage and so on 3951da177e4SLinus Torvalds */ 3961da177e4SLinus Torvalds 397010d331fSAl Viro static int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create) 3981da177e4SLinus Torvalds { 3991da177e4SLinus Torvalds struct super_block * sb = inode->i_sb; 400788257d6SArnd Bergmann struct ufs_sb_info * sbi = UFS_SB(sb); 401788257d6SArnd Bergmann struct ufs_sb_private_info * uspi = sbi->s_uspi; 4021da177e4SLinus Torvalds struct buffer_head * bh; 4031da177e4SLinus Torvalds int ret, err, new; 4044b7068c8SAl Viro unsigned offsets[4]; 4054b7068c8SAl Viro int depth = ufs_block_to_path(inode, fragment >> uspi->s_fpbshift, offsets); 4065336970bSAl Viro unsigned long phys; 4071da177e4SLinus Torvalds u64 phys64 = 0; 408177848a0SAl Viro unsigned frag = fragment & uspi->s_fpbmask; 4091da177e4SLinus Torvalds 4101da177e4SLinus Torvalds if (!create) { 4114b7068c8SAl Viro phys64 = ufs_frag_map(inode, offsets, depth); 4124b7068c8SAl Viro if (phys64) { 413177848a0SAl Viro phys64 += frag; 4141da177e4SLinus Torvalds map_bh(bh_result, sb, phys64); 4154b7068c8SAl Viro } 4161da177e4SLinus Torvalds return 0; 4171da177e4SLinus Torvalds } 4181da177e4SLinus Torvalds 4191da177e4SLinus Torvalds /* This code entered only while writing ....? */ 4201da177e4SLinus Torvalds 4211da177e4SLinus Torvalds err = -EIO; 4221da177e4SLinus Torvalds new = 0; 4231da177e4SLinus Torvalds ret = 0; 4241da177e4SLinus Torvalds bh = NULL; 4251da177e4SLinus Torvalds 426724bb09fSAl Viro mutex_lock(&UFS_I(inode)->truncate_mutex); 4271da177e4SLinus Torvalds 428abf5d15fSEvgeniy Dushistov UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment); 42971dd4284SAl Viro if (!depth) 4301da177e4SLinus Torvalds goto abort_too_big; 4311da177e4SLinus Torvalds 4321da177e4SLinus Torvalds err = 0; 4330f3c1294SAl Viro 4340f3c1294SAl Viro if (UFS_I(inode)->i_lastfrag < UFS_NDIR_FRAGMENT) { 4350f3c1294SAl Viro unsigned lastfrag = UFS_I(inode)->i_lastfrag; 4360f3c1294SAl Viro unsigned tailfrags = lastfrag & uspi->s_fpbmask; 4370f3c1294SAl Viro if (tailfrags && fragment >= lastfrag) { 4380f3c1294SAl Viro if (!ufs_extend_tail(inode, fragment, 4390f3c1294SAl Viro &err, bh_result->b_page)) 4400f3c1294SAl Viro goto abort; 4410f3c1294SAl Viro } 4420f3c1294SAl Viro } 4430f3c1294SAl Viro 44471dd4284SAl Viro if (depth == 1) { 4455336970bSAl Viro phys64 = ufs_inode_getfrag(inode, offsets[0], fragment, 4465336970bSAl Viro &err, &phys, &new, bh_result->b_page); 447177848a0SAl Viro if (phys64) { 448177848a0SAl Viro phys64 += frag; 449177848a0SAl Viro phys = phys64; 450177848a0SAl Viro } 4511da177e4SLinus Torvalds goto out; 4521da177e4SLinus Torvalds } 45371dd4284SAl Viro if (depth == 2) { 4545336970bSAl Viro phys64 = ufs_inode_getfrag(inode, offsets[0], fragment, 4555336970bSAl Viro &err, NULL, NULL, bh_result->b_page); 4561da177e4SLinus Torvalds goto get_indirect; 4571da177e4SLinus Torvalds } 45871dd4284SAl Viro if (depth == 3) { 4595336970bSAl Viro phys64 = ufs_inode_getfrag(inode, offsets[0], fragment, 4605336970bSAl Viro &err, NULL, NULL, bh_result->b_page); 4611da177e4SLinus Torvalds goto get_double; 4621da177e4SLinus Torvalds } 4635336970bSAl Viro phys64 = ufs_inode_getfrag(inode, offsets[0], fragment, 4645336970bSAl Viro &err, NULL, NULL, bh_result->b_page); 465619cfac0SAl Viro phys64 = ufs_inode_getblock(inode, phys64, offsets[1], 4668d9dcf14SAl Viro fragment, &err, NULL, NULL, NULL); 4671da177e4SLinus Torvalds get_double: 468619cfac0SAl Viro phys64 = ufs_inode_getblock(inode, phys64, offsets[depth - 2], 4698d9dcf14SAl Viro fragment, &err, NULL, NULL, NULL); 4701da177e4SLinus Torvalds get_indirect: 471619cfac0SAl Viro phys64 = ufs_inode_getblock(inode, phys64, offsets[depth - 1], 472721435a7SAl Viro fragment, &err, &phys, &new, bh_result->b_page); 473177848a0SAl Viro if (phys64) { 474177848a0SAl Viro phys64 += frag; 475177848a0SAl Viro phys = phys64; 476177848a0SAl Viro } 4771da177e4SLinus Torvalds out: 4781da177e4SLinus Torvalds if (err) 4791da177e4SLinus Torvalds goto abort; 4801da177e4SLinus Torvalds if (new) 4811da177e4SLinus Torvalds set_buffer_new(bh_result); 4821da177e4SLinus Torvalds map_bh(bh_result, sb, phys); 4831da177e4SLinus Torvalds abort: 484724bb09fSAl Viro mutex_unlock(&UFS_I(inode)->truncate_mutex); 485788257d6SArnd Bergmann 4861da177e4SLinus Torvalds return err; 4871da177e4SLinus Torvalds 4881da177e4SLinus Torvalds abort_too_big: 4891da177e4SLinus Torvalds ufs_warning(sb, "ufs_get_block", "block > big"); 4901da177e4SLinus Torvalds goto abort; 4911da177e4SLinus Torvalds } 4921da177e4SLinus Torvalds 4931da177e4SLinus Torvalds static int ufs_writepage(struct page *page, struct writeback_control *wbc) 4941da177e4SLinus Torvalds { 4951da177e4SLinus Torvalds return block_write_full_page(page,ufs_getfrag_block,wbc); 4961da177e4SLinus Torvalds } 49782b9d1d0SNick Piggin 4981da177e4SLinus Torvalds static int ufs_readpage(struct file *file, struct page *page) 4991da177e4SLinus Torvalds { 5001da177e4SLinus Torvalds return block_read_full_page(page,ufs_getfrag_block); 5011da177e4SLinus Torvalds } 50282b9d1d0SNick Piggin 503f4e420dcSChristoph Hellwig int ufs_prepare_chunk(struct page *page, loff_t pos, unsigned len) 5041da177e4SLinus Torvalds { 5056e1db88dSChristoph Hellwig return __block_write_begin(page, pos, len, ufs_getfrag_block); 5061da177e4SLinus Torvalds } 50782b9d1d0SNick Piggin 508010d331fSAl Viro static void ufs_truncate_blocks(struct inode *); 509010d331fSAl Viro 51083f6e371SMarco Stornelli static void ufs_write_failed(struct address_space *mapping, loff_t to) 51183f6e371SMarco Stornelli { 51283f6e371SMarco Stornelli struct inode *inode = mapping->host; 51383f6e371SMarco Stornelli 5143b7a3a05SAl Viro if (to > inode->i_size) { 5157caef267SKirill A. Shutemov truncate_pagecache(inode, inode->i_size); 5163b7a3a05SAl Viro ufs_truncate_blocks(inode); 5173b7a3a05SAl Viro } 51883f6e371SMarco Stornelli } 51983f6e371SMarco Stornelli 52082b9d1d0SNick Piggin static int ufs_write_begin(struct file *file, struct address_space *mapping, 52182b9d1d0SNick Piggin loff_t pos, unsigned len, unsigned flags, 52282b9d1d0SNick Piggin struct page **pagep, void **fsdata) 52382b9d1d0SNick Piggin { 524155130a4SChristoph Hellwig int ret; 525155130a4SChristoph Hellwig 526155130a4SChristoph Hellwig ret = block_write_begin(mapping, pos, len, flags, pagep, 527f4e420dcSChristoph Hellwig ufs_getfrag_block); 52883f6e371SMarco Stornelli if (unlikely(ret)) 52983f6e371SMarco Stornelli ufs_write_failed(mapping, pos + len); 530155130a4SChristoph Hellwig 531155130a4SChristoph Hellwig return ret; 53282b9d1d0SNick Piggin } 53382b9d1d0SNick Piggin 5343b7a3a05SAl Viro static int ufs_write_end(struct file *file, struct address_space *mapping, 5353b7a3a05SAl Viro loff_t pos, unsigned len, unsigned copied, 5363b7a3a05SAl Viro struct page *page, void *fsdata) 5373b7a3a05SAl Viro { 5383b7a3a05SAl Viro int ret; 5393b7a3a05SAl Viro 5403b7a3a05SAl Viro ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata); 5413b7a3a05SAl Viro if (ret < len) 5423b7a3a05SAl Viro ufs_write_failed(mapping, pos + len); 5433b7a3a05SAl Viro return ret; 5443b7a3a05SAl Viro } 5453b7a3a05SAl Viro 5461da177e4SLinus Torvalds static sector_t ufs_bmap(struct address_space *mapping, sector_t block) 5471da177e4SLinus Torvalds { 5481da177e4SLinus Torvalds return generic_block_bmap(mapping,block,ufs_getfrag_block); 5491da177e4SLinus Torvalds } 55082b9d1d0SNick Piggin 551f5e54d6eSChristoph Hellwig const struct address_space_operations ufs_aops = { 5521da177e4SLinus Torvalds .readpage = ufs_readpage, 5531da177e4SLinus Torvalds .writepage = ufs_writepage, 55482b9d1d0SNick Piggin .write_begin = ufs_write_begin, 5553b7a3a05SAl Viro .write_end = ufs_write_end, 5561da177e4SLinus Torvalds .bmap = ufs_bmap 5571da177e4SLinus Torvalds }; 5581da177e4SLinus Torvalds 559826843a3SEvgeniy Dushistov static void ufs_set_inode_ops(struct inode *inode) 560826843a3SEvgeniy Dushistov { 561826843a3SEvgeniy Dushistov if (S_ISREG(inode->i_mode)) { 562826843a3SEvgeniy Dushistov inode->i_op = &ufs_file_inode_operations; 563826843a3SEvgeniy Dushistov inode->i_fop = &ufs_file_operations; 564826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 565826843a3SEvgeniy Dushistov } else if (S_ISDIR(inode->i_mode)) { 566826843a3SEvgeniy Dushistov inode->i_op = &ufs_dir_inode_operations; 567826843a3SEvgeniy Dushistov inode->i_fop = &ufs_dir_operations; 568826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 569826843a3SEvgeniy Dushistov } else if (S_ISLNK(inode->i_mode)) { 5704b8061a6SAl Viro if (!inode->i_blocks) { 571826843a3SEvgeniy Dushistov inode->i_op = &ufs_fast_symlink_inode_operations; 5724b8061a6SAl Viro inode->i_link = (char *)UFS_I(inode)->i_u1.i_symlink; 5734b8061a6SAl Viro } else { 574311b9549SDmitry Monakhov inode->i_op = &ufs_symlink_inode_operations; 575826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 576826843a3SEvgeniy Dushistov } 577826843a3SEvgeniy Dushistov } else 578826843a3SEvgeniy Dushistov init_special_inode(inode, inode->i_mode, 579826843a3SEvgeniy Dushistov ufs_get_inode_dev(inode->i_sb, UFS_I(inode))); 580826843a3SEvgeniy Dushistov } 581826843a3SEvgeniy Dushistov 58207a0cfecSEvgeniy Dushistov static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode) 5831da177e4SLinus Torvalds { 5841da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 58505f225dcSEvgeniy Dushistov struct super_block *sb = inode->i_sb; 5866a9a06d9SAl Viro umode_t mode; 5871da177e4SLinus Torvalds 5881da177e4SLinus Torvalds /* 5891da177e4SLinus Torvalds * Copy data to the in-core inode. 5901da177e4SLinus Torvalds */ 5911da177e4SLinus Torvalds inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode); 592bfe86848SMiklos Szeredi set_nlink(inode, fs16_to_cpu(sb, ufs_inode->ui_nlink)); 59307a0cfecSEvgeniy Dushistov if (inode->i_nlink == 0) { 5941da177e4SLinus Torvalds ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 59507a0cfecSEvgeniy Dushistov return -1; 59607a0cfecSEvgeniy Dushistov } 5971da177e4SLinus Torvalds 5981da177e4SLinus Torvalds /* 5991da177e4SLinus Torvalds * Linux now has 32-bit uid and gid, so we can support EFT. 6001da177e4SLinus Torvalds */ 60172235465SEric W. Biederman i_uid_write(inode, ufs_get_inode_uid(sb, ufs_inode)); 60272235465SEric W. Biederman i_gid_write(inode, ufs_get_inode_gid(sb, ufs_inode)); 6031da177e4SLinus Torvalds 6041da177e4SLinus Torvalds inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); 6051da177e4SLinus Torvalds inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); 6061da177e4SLinus Torvalds inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); 6071da177e4SLinus Torvalds inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); 6081da177e4SLinus Torvalds inode->i_mtime.tv_nsec = 0; 6091da177e4SLinus Torvalds inode->i_atime.tv_nsec = 0; 6101da177e4SLinus Torvalds inode->i_ctime.tv_nsec = 0; 6111da177e4SLinus Torvalds inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); 6123313e292SEvgeniy Dushistov inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen); 6131da177e4SLinus Torvalds ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); 6141da177e4SLinus Torvalds ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 6151da177e4SLinus Torvalds ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 61605f225dcSEvgeniy Dushistov 6171da177e4SLinus Torvalds 6181da177e4SLinus Torvalds if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 619f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr, 620f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 621dd187a26SEvgeniy Dushistov } else { 622f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink, 623b12903f1SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink) - 1); 624b12903f1SDuane Griffin ufsi->i_u1.i_symlink[sizeof(ufs_inode->ui_u2.ui_symlink) - 1] = 0; 6251da177e4SLinus Torvalds } 62607a0cfecSEvgeniy Dushistov return 0; 62705f225dcSEvgeniy Dushistov } 6281da177e4SLinus Torvalds 62907a0cfecSEvgeniy Dushistov static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode) 63005f225dcSEvgeniy Dushistov { 63105f225dcSEvgeniy Dushistov struct ufs_inode_info *ufsi = UFS_I(inode); 63205f225dcSEvgeniy Dushistov struct super_block *sb = inode->i_sb; 6336a9a06d9SAl Viro umode_t mode; 6341da177e4SLinus Torvalds 635abf5d15fSEvgeniy Dushistov UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino); 6361da177e4SLinus Torvalds /* 6371da177e4SLinus Torvalds * Copy data to the in-core inode. 6381da177e4SLinus Torvalds */ 6391da177e4SLinus Torvalds inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode); 640bfe86848SMiklos Szeredi set_nlink(inode, fs16_to_cpu(sb, ufs2_inode->ui_nlink)); 64107a0cfecSEvgeniy Dushistov if (inode->i_nlink == 0) { 6421da177e4SLinus Torvalds ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 64307a0cfecSEvgeniy Dushistov return -1; 64407a0cfecSEvgeniy Dushistov } 6451da177e4SLinus Torvalds 6461da177e4SLinus Torvalds /* 6471da177e4SLinus Torvalds * Linux now has 32-bit uid and gid, so we can support EFT. 6481da177e4SLinus Torvalds */ 64972235465SEric W. Biederman i_uid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_uid)); 65072235465SEric W. Biederman i_gid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_gid)); 6511da177e4SLinus Torvalds 6521da177e4SLinus Torvalds inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size); 6532189850fSEvgeniy Dushistov inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime); 6542189850fSEvgeniy Dushistov inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime); 6552189850fSEvgeniy Dushistov inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime); 6562189850fSEvgeniy Dushistov inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec); 6572189850fSEvgeniy Dushistov inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec); 6582189850fSEvgeniy Dushistov inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec); 6591da177e4SLinus Torvalds inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks); 6603313e292SEvgeniy Dushistov inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen); 6611da177e4SLinus Torvalds ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags); 6621da177e4SLinus Torvalds /* 6631da177e4SLinus Torvalds ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 6641da177e4SLinus Torvalds ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 6651da177e4SLinus Torvalds */ 6661da177e4SLinus Torvalds 6671da177e4SLinus Torvalds if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 668f33219b7SDuane Griffin memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr, 669f33219b7SDuane Griffin sizeof(ufs2_inode->ui_u2.ui_addr)); 67005f225dcSEvgeniy Dushistov } else { 671f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink, 672b12903f1SDuane Griffin sizeof(ufs2_inode->ui_u2.ui_symlink) - 1); 673b12903f1SDuane Griffin ufsi->i_u1.i_symlink[sizeof(ufs2_inode->ui_u2.ui_symlink) - 1] = 0; 6741da177e4SLinus Torvalds } 67507a0cfecSEvgeniy Dushistov return 0; 67605f225dcSEvgeniy Dushistov } 67705f225dcSEvgeniy Dushistov 678b55c460dSDavid Howells struct inode *ufs_iget(struct super_block *sb, unsigned long ino) 67905f225dcSEvgeniy Dushistov { 680b55c460dSDavid Howells struct ufs_inode_info *ufsi; 681b55c460dSDavid Howells struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 68205f225dcSEvgeniy Dushistov struct buffer_head * bh; 683b55c460dSDavid Howells struct inode *inode; 68407a0cfecSEvgeniy Dushistov int err; 68505f225dcSEvgeniy Dushistov 686b55c460dSDavid Howells UFSD("ENTER, ino %lu\n", ino); 68705f225dcSEvgeniy Dushistov 688b55c460dSDavid Howells if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) { 68905f225dcSEvgeniy Dushistov ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n", 690b55c460dSDavid Howells ino); 691b55c460dSDavid Howells return ERR_PTR(-EIO); 69205f225dcSEvgeniy Dushistov } 69305f225dcSEvgeniy Dushistov 694b55c460dSDavid Howells inode = iget_locked(sb, ino); 695b55c460dSDavid Howells if (!inode) 696b55c460dSDavid Howells return ERR_PTR(-ENOMEM); 697b55c460dSDavid Howells if (!(inode->i_state & I_NEW)) 698b55c460dSDavid Howells return inode; 699b55c460dSDavid Howells 700b55c460dSDavid Howells ufsi = UFS_I(inode); 701b55c460dSDavid Howells 70205f225dcSEvgeniy Dushistov bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino)); 70305f225dcSEvgeniy Dushistov if (!bh) { 70405f225dcSEvgeniy Dushistov ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n", 70505f225dcSEvgeniy Dushistov inode->i_ino); 70605f225dcSEvgeniy Dushistov goto bad_inode; 70705f225dcSEvgeniy Dushistov } 70805f225dcSEvgeniy Dushistov if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { 70905f225dcSEvgeniy Dushistov struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 71005f225dcSEvgeniy Dushistov 71107a0cfecSEvgeniy Dushistov err = ufs2_read_inode(inode, 71205f225dcSEvgeniy Dushistov ufs2_inode + ufs_inotofsbo(inode->i_ino)); 71305f225dcSEvgeniy Dushistov } else { 71405f225dcSEvgeniy Dushistov struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data; 71505f225dcSEvgeniy Dushistov 71607a0cfecSEvgeniy Dushistov err = ufs1_read_inode(inode, 71707a0cfecSEvgeniy Dushistov ufs_inode + ufs_inotofsbo(inode->i_ino)); 71805f225dcSEvgeniy Dushistov } 71905f225dcSEvgeniy Dushistov 72007a0cfecSEvgeniy Dushistov if (err) 72107a0cfecSEvgeniy Dushistov goto bad_inode; 72205f225dcSEvgeniy Dushistov inode->i_version++; 72305f225dcSEvgeniy Dushistov ufsi->i_lastfrag = 72405f225dcSEvgeniy Dushistov (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; 72505f225dcSEvgeniy Dushistov ufsi->i_dir_start_lookup = 0; 7261da177e4SLinus Torvalds ufsi->i_osync = 0; 7271da177e4SLinus Torvalds 728826843a3SEvgeniy Dushistov ufs_set_inode_ops(inode); 7291da177e4SLinus Torvalds 7301da177e4SLinus Torvalds brelse(bh); 7311da177e4SLinus Torvalds 732abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 733b55c460dSDavid Howells unlock_new_inode(inode); 734b55c460dSDavid Howells return inode; 73505f225dcSEvgeniy Dushistov 73605f225dcSEvgeniy Dushistov bad_inode: 737b55c460dSDavid Howells iget_failed(inode); 738b55c460dSDavid Howells return ERR_PTR(-EIO); 7391da177e4SLinus Torvalds } 7401da177e4SLinus Torvalds 7413313e292SEvgeniy Dushistov static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode) 7421da177e4SLinus Torvalds { 7433313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 7441da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 7451da177e4SLinus Torvalds 7461da177e4SLinus Torvalds ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 7471da177e4SLinus Torvalds ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 7481da177e4SLinus Torvalds 74972235465SEric W. Biederman ufs_set_inode_uid(sb, ufs_inode, i_uid_read(inode)); 75072235465SEric W. Biederman ufs_set_inode_gid(sb, ufs_inode, i_gid_read(inode)); 7511da177e4SLinus Torvalds 7521da177e4SLinus Torvalds ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 7531da177e4SLinus Torvalds ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec); 7541da177e4SLinus Torvalds ufs_inode->ui_atime.tv_usec = 0; 7551da177e4SLinus Torvalds ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec); 7561da177e4SLinus Torvalds ufs_inode->ui_ctime.tv_usec = 0; 7571da177e4SLinus Torvalds ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec); 7581da177e4SLinus Torvalds ufs_inode->ui_mtime.tv_usec = 0; 7591da177e4SLinus Torvalds ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks); 7601da177e4SLinus Torvalds ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 7613313e292SEvgeniy Dushistov ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); 7621da177e4SLinus Torvalds 7633313e292SEvgeniy Dushistov if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) { 7641da177e4SLinus Torvalds ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow); 7651da177e4SLinus Torvalds ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag); 7661da177e4SLinus Torvalds } 7671da177e4SLinus Torvalds 7681da177e4SLinus Torvalds if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 7691da177e4SLinus Torvalds /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 7701da177e4SLinus Torvalds ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0]; 7711da177e4SLinus Torvalds } else if (inode->i_blocks) { 772f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data, 773f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 7741da177e4SLinus Torvalds } 7751da177e4SLinus Torvalds else { 776f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, 777f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink)); 7781da177e4SLinus Torvalds } 7791da177e4SLinus Torvalds 7801da177e4SLinus Torvalds if (!inode->i_nlink) 7811da177e4SLinus Torvalds memset (ufs_inode, 0, sizeof(struct ufs_inode)); 7823313e292SEvgeniy Dushistov } 7833313e292SEvgeniy Dushistov 7843313e292SEvgeniy Dushistov static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode) 7853313e292SEvgeniy Dushistov { 7863313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 7873313e292SEvgeniy Dushistov struct ufs_inode_info *ufsi = UFS_I(inode); 7883313e292SEvgeniy Dushistov 7893313e292SEvgeniy Dushistov UFSD("ENTER\n"); 7903313e292SEvgeniy Dushistov ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 7913313e292SEvgeniy Dushistov ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 7923313e292SEvgeniy Dushistov 79372235465SEric W. Biederman ufs_inode->ui_uid = cpu_to_fs32(sb, i_uid_read(inode)); 79472235465SEric W. Biederman ufs_inode->ui_gid = cpu_to_fs32(sb, i_gid_read(inode)); 7953313e292SEvgeniy Dushistov 7963313e292SEvgeniy Dushistov ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 7972189850fSEvgeniy Dushistov ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec); 7982189850fSEvgeniy Dushistov ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec); 7992189850fSEvgeniy Dushistov ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec); 8002189850fSEvgeniy Dushistov ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec); 8012189850fSEvgeniy Dushistov ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec); 8022189850fSEvgeniy Dushistov ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec); 8033313e292SEvgeniy Dushistov 8043313e292SEvgeniy Dushistov ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks); 8053313e292SEvgeniy Dushistov ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 8063313e292SEvgeniy Dushistov ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); 8073313e292SEvgeniy Dushistov 8083313e292SEvgeniy Dushistov if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 8093313e292SEvgeniy Dushistov /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 8103313e292SEvgeniy Dushistov ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0]; 8113313e292SEvgeniy Dushistov } else if (inode->i_blocks) { 812f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data, 813f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 8143313e292SEvgeniy Dushistov } else { 815f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, 816f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink)); 8173313e292SEvgeniy Dushistov } 8183313e292SEvgeniy Dushistov 8193313e292SEvgeniy Dushistov if (!inode->i_nlink) 8203313e292SEvgeniy Dushistov memset (ufs_inode, 0, sizeof(struct ufs2_inode)); 8213313e292SEvgeniy Dushistov UFSD("EXIT\n"); 8223313e292SEvgeniy Dushistov } 8233313e292SEvgeniy Dushistov 8243313e292SEvgeniy Dushistov static int ufs_update_inode(struct inode * inode, int do_sync) 8253313e292SEvgeniy Dushistov { 8263313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 8273313e292SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 8283313e292SEvgeniy Dushistov struct buffer_head * bh; 8293313e292SEvgeniy Dushistov 8303313e292SEvgeniy Dushistov UFSD("ENTER, ino %lu\n", inode->i_ino); 8313313e292SEvgeniy Dushistov 8323313e292SEvgeniy Dushistov if (inode->i_ino < UFS_ROOTINO || 8333313e292SEvgeniy Dushistov inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { 8343313e292SEvgeniy Dushistov ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); 8353313e292SEvgeniy Dushistov return -1; 8363313e292SEvgeniy Dushistov } 8373313e292SEvgeniy Dushistov 8383313e292SEvgeniy Dushistov bh = sb_bread(sb, ufs_inotofsba(inode->i_ino)); 8393313e292SEvgeniy Dushistov if (!bh) { 8403313e292SEvgeniy Dushistov ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); 8413313e292SEvgeniy Dushistov return -1; 8423313e292SEvgeniy Dushistov } 8433313e292SEvgeniy Dushistov if (uspi->fs_magic == UFS2_MAGIC) { 8443313e292SEvgeniy Dushistov struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 8453313e292SEvgeniy Dushistov 8463313e292SEvgeniy Dushistov ufs2_update_inode(inode, 8473313e292SEvgeniy Dushistov ufs2_inode + ufs_inotofsbo(inode->i_ino)); 8483313e292SEvgeniy Dushistov } else { 8493313e292SEvgeniy Dushistov struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data; 8503313e292SEvgeniy Dushistov 8513313e292SEvgeniy Dushistov ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino)); 8523313e292SEvgeniy Dushistov } 8531da177e4SLinus Torvalds 8541da177e4SLinus Torvalds mark_buffer_dirty(bh); 8551da177e4SLinus Torvalds if (do_sync) 8561da177e4SLinus Torvalds sync_dirty_buffer(bh); 8571da177e4SLinus Torvalds brelse (bh); 8581da177e4SLinus Torvalds 859abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 8601da177e4SLinus Torvalds return 0; 8611da177e4SLinus Torvalds } 8621da177e4SLinus Torvalds 863a9185b41SChristoph Hellwig int ufs_write_inode(struct inode *inode, struct writeback_control *wbc) 8641da177e4SLinus Torvalds { 865f3e0f3daSAl Viro return ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL); 8661da177e4SLinus Torvalds } 8671da177e4SLinus Torvalds 8681da177e4SLinus Torvalds int ufs_sync_inode (struct inode *inode) 8691da177e4SLinus Torvalds { 8701da177e4SLinus Torvalds return ufs_update_inode (inode, 1); 8711da177e4SLinus Torvalds } 8721da177e4SLinus Torvalds 87358e8268cSAl Viro void ufs_evict_inode(struct inode * inode) 8741da177e4SLinus Torvalds { 87558e8268cSAl Viro int want_delete = 0; 87658e8268cSAl Viro 87758e8268cSAl Viro if (!inode->i_nlink && !is_bad_inode(inode)) 87858e8268cSAl Viro want_delete = 1; 87910e5dce0SEvgeniy Dushistov 88091b0abe3SJohannes Weiner truncate_inode_pages_final(&inode->i_data); 88158e8268cSAl Viro if (want_delete) { 8821da177e4SLinus Torvalds inode->i_size = 0; 883d622f167SAl Viro if (inode->i_blocks) 884d622f167SAl Viro ufs_truncate_blocks(inode); 88558e8268cSAl Viro } 88658e8268cSAl Viro 88758e8268cSAl Viro invalidate_inode_buffers(inode); 888dbd5768fSJan Kara clear_inode(inode); 88958e8268cSAl Viro 890f3e0f3daSAl Viro if (want_delete) 8911da177e4SLinus Torvalds ufs_free_inode(inode); 8921da177e4SLinus Torvalds } 893010d331fSAl Viro 894a138b4b6SAl Viro struct to_free { 895a138b4b6SAl Viro struct inode *inode; 896a138b4b6SAl Viro u64 to; 897a138b4b6SAl Viro unsigned count; 898a138b4b6SAl Viro }; 899a138b4b6SAl Viro 900a138b4b6SAl Viro static inline void free_data(struct to_free *ctx, u64 from, unsigned count) 901a138b4b6SAl Viro { 902a138b4b6SAl Viro if (ctx->count && ctx->to != from) { 903a138b4b6SAl Viro ufs_free_blocks(ctx->inode, ctx->to - ctx->count, ctx->count); 904a138b4b6SAl Viro ctx->count = 0; 905a138b4b6SAl Viro } 906a138b4b6SAl Viro ctx->count += count; 907a138b4b6SAl Viro ctx->to = from + count; 908a138b4b6SAl Viro } 909a138b4b6SAl Viro 910010d331fSAl Viro #define DIRECT_BLOCK ((inode->i_size + uspi->s_bsize - 1) >> uspi->s_bshift) 911010d331fSAl Viro #define DIRECT_FRAGMENT ((inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift) 912010d331fSAl Viro 913010d331fSAl Viro static void ufs_trunc_direct(struct inode *inode) 914010d331fSAl Viro { 915010d331fSAl Viro struct ufs_inode_info *ufsi = UFS_I(inode); 916010d331fSAl Viro struct super_block * sb; 917010d331fSAl Viro struct ufs_sb_private_info * uspi; 918010d331fSAl Viro void *p; 919010d331fSAl Viro u64 frag1, frag2, frag3, frag4, block1, block2; 920a138b4b6SAl Viro struct to_free ctx = {.inode = inode}; 921010d331fSAl Viro unsigned i, tmp; 922010d331fSAl Viro 923010d331fSAl Viro UFSD("ENTER: ino %lu\n", inode->i_ino); 924010d331fSAl Viro 925010d331fSAl Viro sb = inode->i_sb; 926010d331fSAl Viro uspi = UFS_SB(sb)->s_uspi; 927010d331fSAl Viro 928010d331fSAl Viro frag1 = DIRECT_FRAGMENT; 929010d331fSAl Viro frag4 = min_t(u64, UFS_NDIR_FRAGMENT, ufsi->i_lastfrag); 930010d331fSAl Viro frag2 = ((frag1 & uspi->s_fpbmask) ? ((frag1 | uspi->s_fpbmask) + 1) : frag1); 931010d331fSAl Viro frag3 = frag4 & ~uspi->s_fpbmask; 932010d331fSAl Viro block1 = block2 = 0; 933010d331fSAl Viro if (frag2 > frag3) { 934010d331fSAl Viro frag2 = frag4; 935010d331fSAl Viro frag3 = frag4 = 0; 936010d331fSAl Viro } else if (frag2 < frag3) { 937010d331fSAl Viro block1 = ufs_fragstoblks (frag2); 938010d331fSAl Viro block2 = ufs_fragstoblks (frag3); 939010d331fSAl Viro } 940010d331fSAl Viro 941010d331fSAl Viro UFSD("ino %lu, frag1 %llu, frag2 %llu, block1 %llu, block2 %llu," 942010d331fSAl Viro " frag3 %llu, frag4 %llu\n", inode->i_ino, 943010d331fSAl Viro (unsigned long long)frag1, (unsigned long long)frag2, 944010d331fSAl Viro (unsigned long long)block1, (unsigned long long)block2, 945010d331fSAl Viro (unsigned long long)frag3, (unsigned long long)frag4); 946010d331fSAl Viro 947010d331fSAl Viro if (frag1 >= frag2) 948010d331fSAl Viro goto next1; 949010d331fSAl Viro 950010d331fSAl Viro /* 951010d331fSAl Viro * Free first free fragments 952010d331fSAl Viro */ 953010d331fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag1)); 954010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 955010d331fSAl Viro if (!tmp ) 956010d331fSAl Viro ufs_panic (sb, "ufs_trunc_direct", "internal error"); 957010d331fSAl Viro frag2 -= frag1; 958010d331fSAl Viro frag1 = ufs_fragnum (frag1); 959010d331fSAl Viro 960010d331fSAl Viro ufs_free_fragments(inode, tmp + frag1, frag2); 961010d331fSAl Viro 962010d331fSAl Viro next1: 963010d331fSAl Viro /* 964010d331fSAl Viro * Free whole blocks 965010d331fSAl Viro */ 966010d331fSAl Viro for (i = block1 ; i < block2; i++) { 967010d331fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, i); 968010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 969010d331fSAl Viro if (!tmp) 970010d331fSAl Viro continue; 971010d331fSAl Viro write_seqlock(&ufsi->meta_lock); 972010d331fSAl Viro ufs_data_ptr_clear(uspi, p); 973010d331fSAl Viro write_sequnlock(&ufsi->meta_lock); 974010d331fSAl Viro 975a138b4b6SAl Viro free_data(&ctx, tmp, uspi->s_fpb); 976010d331fSAl Viro } 977010d331fSAl Viro 978a138b4b6SAl Viro free_data(&ctx, 0, 0); 979010d331fSAl Viro 980010d331fSAl Viro if (frag3 >= frag4) 981010d331fSAl Viro goto next3; 982010d331fSAl Viro 983010d331fSAl Viro /* 984010d331fSAl Viro * Free last free fragments 985010d331fSAl Viro */ 986010d331fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag3)); 987010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 988010d331fSAl Viro if (!tmp ) 989010d331fSAl Viro ufs_panic(sb, "ufs_truncate_direct", "internal error"); 990010d331fSAl Viro frag4 = ufs_fragnum (frag4); 991010d331fSAl Viro write_seqlock(&ufsi->meta_lock); 992010d331fSAl Viro ufs_data_ptr_clear(uspi, p); 993010d331fSAl Viro write_sequnlock(&ufsi->meta_lock); 994010d331fSAl Viro 995010d331fSAl Viro ufs_free_fragments (inode, tmp, frag4); 996010d331fSAl Viro next3: 997010d331fSAl Viro 998010d331fSAl Viro UFSD("EXIT: ino %lu\n", inode->i_ino); 999010d331fSAl Viro } 1000010d331fSAl Viro 1001163073dbSAl Viro static void free_full_branch(struct inode *inode, u64 ind_block, int depth) 1002010d331fSAl Viro { 10036ac36b87SAl Viro struct super_block *sb = inode->i_sb; 10046ac36b87SAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 1005163073dbSAl Viro struct ufs_buffer_head *ubh = ubh_bread(sb, ind_block, uspi->s_bsize); 10066ac36b87SAl Viro unsigned i; 1007010d331fSAl Viro 1008163073dbSAl Viro if (!ubh) 1009010d331fSAl Viro return; 1010010d331fSAl Viro 10119e0fbbdeSAl Viro if (--depth) { 10126d1ebbcaSAl Viro for (i = 0; i < uspi->s_apb; i++) { 1013163073dbSAl Viro void *p = ubh_get_data_ptr(uspi, ubh, i); 1014163073dbSAl Viro u64 block = ufs_data_ptr_to_cpu(sb, p); 1015cc7231e3SAl Viro if (block) 1016163073dbSAl Viro free_full_branch(inode, block, depth); 1017163073dbSAl Viro } 10186d1ebbcaSAl Viro } else { 10196d1ebbcaSAl Viro struct to_free ctx = {.inode = inode}; 10206d1ebbcaSAl Viro 10216d1ebbcaSAl Viro for (i = 0; i < uspi->s_apb; i++) { 1022163073dbSAl Viro void *p = ubh_get_data_ptr(uspi, ubh, i); 1023163073dbSAl Viro u64 block = ufs_data_ptr_to_cpu(sb, p); 1024cc7231e3SAl Viro if (block) 1025163073dbSAl Viro free_data(&ctx, block, uspi->s_fpb); 10266d1ebbcaSAl Viro } 10276d1ebbcaSAl Viro free_data(&ctx, 0, 0); 10286d1ebbcaSAl Viro } 10296d1ebbcaSAl Viro 10306d1ebbcaSAl Viro ubh_bforget(ubh); 1031163073dbSAl Viro ufs_free_blocks(inode, ind_block, uspi->s_fpb); 10326d1ebbcaSAl Viro } 10336d1ebbcaSAl Viro 10347b4e4f7fSAl Viro static void free_branch_tail(struct inode *inode, unsigned from, struct ufs_buffer_head *ubh, int depth) 10356d1ebbcaSAl Viro { 10366d1ebbcaSAl Viro struct super_block *sb = inode->i_sb; 10376d1ebbcaSAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 10386d1ebbcaSAl Viro unsigned i; 10396d1ebbcaSAl Viro 10406aab6dd3SAl Viro if (--depth) { 1041a9657423SAl Viro for (i = from; i < uspi->s_apb ; i++) { 1042163073dbSAl Viro void *p = ubh_get_data_ptr(uspi, ubh, i); 1043163073dbSAl Viro u64 block = ufs_data_ptr_to_cpu(sb, p); 1044163073dbSAl Viro if (block) { 1045163073dbSAl Viro write_seqlock(&UFS_I(inode)->meta_lock); 1046163073dbSAl Viro ufs_data_ptr_clear(uspi, p); 1047163073dbSAl Viro write_sequnlock(&UFS_I(inode)->meta_lock); 1048a9657423SAl Viro ubh_mark_buffer_dirty(ubh); 1049163073dbSAl Viro free_full_branch(inode, block, depth); 1050163073dbSAl Viro } 1051a9657423SAl Viro } 10529e0fbbdeSAl Viro } else { 1053a138b4b6SAl Viro struct to_free ctx = {.inode = inode}; 10549e0fbbdeSAl Viro 10556ac36b87SAl Viro for (i = from; 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); 1058163073dbSAl Viro if (block) { 1059010d331fSAl Viro write_seqlock(&UFS_I(inode)->meta_lock); 1060163073dbSAl Viro ufs_data_ptr_clear(uspi, p); 1061010d331fSAl Viro write_sequnlock(&UFS_I(inode)->meta_lock); 10629e0fbbdeSAl Viro ubh_mark_buffer_dirty(ubh); 1063163073dbSAl Viro free_data(&ctx, block, uspi->s_fpb); 1064010d331fSAl Viro } 1065163073dbSAl Viro } 1066a138b4b6SAl Viro free_data(&ctx, 0, 0); 1067010d331fSAl Viro } 10689e0fbbdeSAl Viro if (IS_SYNC(inode) && ubh_buffer_dirty(ubh)) 10699e0fbbdeSAl Viro ubh_sync_block(ubh); 10709e0fbbdeSAl Viro ubh_brelse(ubh); 1071010d331fSAl Viro } 1072010d331fSAl Viro 1073010d331fSAl Viro static int ufs_alloc_lastblock(struct inode *inode, loff_t size) 1074010d331fSAl Viro { 1075010d331fSAl Viro int err = 0; 1076010d331fSAl Viro struct super_block *sb = inode->i_sb; 1077010d331fSAl Viro struct address_space *mapping = inode->i_mapping; 1078010d331fSAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 1079010d331fSAl Viro unsigned i, end; 1080010d331fSAl Viro sector_t lastfrag; 1081010d331fSAl Viro struct page *lastpage; 1082010d331fSAl Viro struct buffer_head *bh; 1083010d331fSAl Viro u64 phys64; 1084010d331fSAl Viro 1085010d331fSAl Viro lastfrag = (size + uspi->s_fsize - 1) >> uspi->s_fshift; 1086010d331fSAl Viro 1087010d331fSAl Viro if (!lastfrag) 1088010d331fSAl Viro goto out; 1089010d331fSAl Viro 1090010d331fSAl Viro lastfrag--; 1091010d331fSAl Viro 1092010d331fSAl Viro lastpage = ufs_get_locked_page(mapping, lastfrag >> 1093010d331fSAl Viro (PAGE_CACHE_SHIFT - inode->i_blkbits)); 1094010d331fSAl Viro if (IS_ERR(lastpage)) { 1095010d331fSAl Viro err = -EIO; 1096010d331fSAl Viro goto out; 1097010d331fSAl Viro } 1098010d331fSAl Viro 1099010d331fSAl Viro end = lastfrag & ((1 << (PAGE_CACHE_SHIFT - inode->i_blkbits)) - 1); 1100010d331fSAl Viro bh = page_buffers(lastpage); 1101010d331fSAl Viro for (i = 0; i < end; ++i) 1102010d331fSAl Viro bh = bh->b_this_page; 1103010d331fSAl Viro 1104010d331fSAl Viro 1105010d331fSAl Viro err = ufs_getfrag_block(inode, lastfrag, bh, 1); 1106010d331fSAl Viro 1107010d331fSAl Viro if (unlikely(err)) 1108010d331fSAl Viro goto out_unlock; 1109010d331fSAl Viro 1110010d331fSAl Viro if (buffer_new(bh)) { 1111010d331fSAl Viro clear_buffer_new(bh); 1112010d331fSAl Viro unmap_underlying_metadata(bh->b_bdev, 1113010d331fSAl Viro bh->b_blocknr); 1114010d331fSAl Viro /* 1115010d331fSAl Viro * we do not zeroize fragment, because of 1116010d331fSAl Viro * if it maped to hole, it already contains zeroes 1117010d331fSAl Viro */ 1118010d331fSAl Viro set_buffer_uptodate(bh); 1119010d331fSAl Viro mark_buffer_dirty(bh); 1120010d331fSAl Viro set_page_dirty(lastpage); 1121010d331fSAl Viro } 1122010d331fSAl Viro 1123010d331fSAl Viro if (lastfrag >= UFS_IND_FRAGMENT) { 1124010d331fSAl Viro end = uspi->s_fpb - ufs_fragnum(lastfrag) - 1; 1125010d331fSAl Viro phys64 = bh->b_blocknr + 1; 1126010d331fSAl Viro for (i = 0; i < end; ++i) { 1127010d331fSAl Viro bh = sb_getblk(sb, i + phys64); 1128010d331fSAl Viro lock_buffer(bh); 1129010d331fSAl Viro memset(bh->b_data, 0, sb->s_blocksize); 1130010d331fSAl Viro set_buffer_uptodate(bh); 1131010d331fSAl Viro mark_buffer_dirty(bh); 1132010d331fSAl Viro unlock_buffer(bh); 1133010d331fSAl Viro sync_dirty_buffer(bh); 1134010d331fSAl Viro brelse(bh); 1135010d331fSAl Viro } 1136010d331fSAl Viro } 1137010d331fSAl Viro out_unlock: 1138010d331fSAl Viro ufs_put_locked_page(lastpage); 1139010d331fSAl Viro out: 1140010d331fSAl Viro return err; 1141010d331fSAl Viro } 1142010d331fSAl Viro 1143010d331fSAl Viro static void __ufs_truncate_blocks(struct inode *inode) 1144010d331fSAl Viro { 1145010d331fSAl Viro struct ufs_inode_info *ufsi = UFS_I(inode); 1146010d331fSAl Viro struct super_block *sb = inode->i_sb; 1147010d331fSAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 11487bad5939SAl Viro unsigned offsets[4]; 114931cd043eSAl Viro int depth = ufs_block_to_path(inode, DIRECT_BLOCK, offsets); 11506775e24dSAl Viro int depth2; 115142432739SAl Viro unsigned i; 11527b4e4f7fSAl Viro struct ufs_buffer_head *ubh[3]; 11537b4e4f7fSAl Viro void *p; 11547b4e4f7fSAl Viro u64 block; 11556775e24dSAl Viro 11566775e24dSAl Viro if (!depth) 11576775e24dSAl Viro return; 11586775e24dSAl Viro 11596775e24dSAl Viro /* find the last non-zero in offsets[] */ 11606775e24dSAl Viro for (depth2 = depth - 1; depth2; depth2--) 11616775e24dSAl Viro if (offsets[depth2]) 11626775e24dSAl Viro break; 1163010d331fSAl Viro 1164010d331fSAl Viro mutex_lock(&ufsi->truncate_mutex); 116542432739SAl Viro if (depth == 1) { 1166010d331fSAl Viro ufs_trunc_direct(inode); 116742432739SAl Viro offsets[0] = UFS_IND_BLOCK; 116842432739SAl Viro } else { 11697b4e4f7fSAl Viro /* get the blocks that should be partially emptied */ 11707b4e4f7fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, offsets[0]); 11717b4e4f7fSAl Viro for (i = 0; i < depth2; i++) { 11727b4e4f7fSAl Viro offsets[i]++; /* next branch is fully freed */ 11737b4e4f7fSAl Viro block = ufs_data_ptr_to_cpu(sb, p); 11747b4e4f7fSAl Viro if (!block) 11757b4e4f7fSAl Viro break; 11767b4e4f7fSAl Viro ubh[i] = ubh_bread(sb, block, uspi->s_bsize); 11777b4e4f7fSAl Viro if (!ubh[i]) { 11787b4e4f7fSAl Viro write_seqlock(&ufsi->meta_lock); 11797b4e4f7fSAl Viro ufs_data_ptr_clear(uspi, p); 11807b4e4f7fSAl Viro write_sequnlock(&ufsi->meta_lock); 11817b4e4f7fSAl Viro break; 11827b4e4f7fSAl Viro } 11837b4e4f7fSAl Viro p = ubh_get_data_ptr(uspi, ubh[i], offsets[i + 1]); 11847b4e4f7fSAl Viro } 1185f53bd142SAl Viro while (i--) 11867b4e4f7fSAl Viro free_branch_tail(inode, offsets[i + 1], ubh[i], depth - i - 1); 11877b4e4f7fSAl Viro } 118842432739SAl Viro for (i = offsets[0]; i <= UFS_TIND_BLOCK; i++) { 1189163073dbSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, i); 1190163073dbSAl Viro block = ufs_data_ptr_to_cpu(sb, p); 1191163073dbSAl Viro if (block) { 1192163073dbSAl Viro write_seqlock(&ufsi->meta_lock); 1193163073dbSAl Viro ufs_data_ptr_clear(uspi, p); 1194163073dbSAl Viro write_sequnlock(&ufsi->meta_lock); 1195163073dbSAl Viro free_full_branch(inode, block, i - UFS_IND_BLOCK + 1); 1196163073dbSAl Viro } 119742432739SAl Viro } 1198010d331fSAl Viro ufsi->i_lastfrag = DIRECT_FRAGMENT; 1199b6eede0eSAl Viro mark_inode_dirty(inode); 1200010d331fSAl Viro mutex_unlock(&ufsi->truncate_mutex); 1201010d331fSAl Viro } 1202010d331fSAl Viro 1203010d331fSAl Viro static int ufs_truncate(struct inode *inode, loff_t size) 1204010d331fSAl Viro { 1205010d331fSAl Viro int err = 0; 1206010d331fSAl Viro 1207010d331fSAl Viro UFSD("ENTER: ino %lu, i_size: %llu, old_i_size: %llu\n", 1208010d331fSAl Viro inode->i_ino, (unsigned long long)size, 1209010d331fSAl Viro (unsigned long long)i_size_read(inode)); 1210010d331fSAl Viro 1211010d331fSAl Viro if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1212010d331fSAl Viro S_ISLNK(inode->i_mode))) 1213010d331fSAl Viro return -EINVAL; 1214010d331fSAl Viro if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) 1215010d331fSAl Viro return -EPERM; 1216010d331fSAl Viro 1217010d331fSAl Viro err = ufs_alloc_lastblock(inode, size); 1218010d331fSAl Viro 1219010d331fSAl Viro if (err) 1220010d331fSAl Viro goto out; 1221010d331fSAl Viro 1222010d331fSAl Viro block_truncate_page(inode->i_mapping, size, ufs_getfrag_block); 1223010d331fSAl Viro 1224010d331fSAl Viro truncate_setsize(inode, size); 1225010d331fSAl Viro 1226010d331fSAl Viro __ufs_truncate_blocks(inode); 1227010d331fSAl Viro inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC; 1228010d331fSAl Viro mark_inode_dirty(inode); 1229010d331fSAl Viro out: 1230010d331fSAl Viro UFSD("EXIT: err %d\n", err); 1231010d331fSAl Viro return err; 1232010d331fSAl Viro } 1233010d331fSAl Viro 1234010d331fSAl Viro void ufs_truncate_blocks(struct inode *inode) 1235010d331fSAl Viro { 1236010d331fSAl Viro if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1237010d331fSAl Viro S_ISLNK(inode->i_mode))) 1238010d331fSAl Viro return; 1239010d331fSAl Viro if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) 1240010d331fSAl Viro return; 1241010d331fSAl Viro __ufs_truncate_blocks(inode); 1242010d331fSAl Viro } 1243010d331fSAl Viro 1244010d331fSAl Viro int ufs_setattr(struct dentry *dentry, struct iattr *attr) 1245010d331fSAl Viro { 1246010d331fSAl Viro struct inode *inode = d_inode(dentry); 1247010d331fSAl Viro unsigned int ia_valid = attr->ia_valid; 1248010d331fSAl Viro int error; 1249010d331fSAl Viro 1250010d331fSAl Viro error = inode_change_ok(inode, attr); 1251010d331fSAl Viro if (error) 1252010d331fSAl Viro return error; 1253010d331fSAl Viro 1254010d331fSAl Viro if (ia_valid & ATTR_SIZE && attr->ia_size != inode->i_size) { 1255010d331fSAl Viro error = ufs_truncate(inode, attr->ia_size); 1256010d331fSAl Viro if (error) 1257010d331fSAl Viro return error; 1258010d331fSAl Viro } 1259010d331fSAl Viro 1260010d331fSAl Viro setattr_copy(inode, attr); 1261010d331fSAl Viro mark_inode_dirty(inode); 1262010d331fSAl Viro return 0; 1263010d331fSAl Viro } 1264010d331fSAl Viro 1265010d331fSAl Viro const struct inode_operations ufs_file_inode_operations = { 1266010d331fSAl Viro .setattr = ufs_setattr, 1267010d331fSAl Viro }; 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