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 * @new: we set it if we allocate new block 249edc023caSFabian Frederick * @locked_page: for ufs_new_fragments() 250022a6dc5SEvgeniy Dushistov */ 251177848a0SAl Viro static u64 2525336970bSAl Viro ufs_inode_getfrag(struct inode *inode, unsigned index, 2535336970bSAl Viro sector_t new_fragment, int *err, 2544e317ce7SAl Viro int *new, struct page *locked_page) 2551da177e4SLinus Torvalds { 2561da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 257022a6dc5SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 258022a6dc5SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 2595336970bSAl Viro u64 tmp, goal, lastfrag; 2600f3c1294SAl Viro unsigned nfrags = uspi->s_fpb; 2610f3c1294SAl Viro void *p; 2621da177e4SLinus Torvalds 2631da177e4SLinus Torvalds /* TODO : to be done for write support 2641da177e4SLinus Torvalds if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 2651da177e4SLinus Torvalds goto ufs2; 2661da177e4SLinus Torvalds */ 2671da177e4SLinus Torvalds 2685336970bSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, index); 26954fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, p); 2700f3c1294SAl Viro if (tmp) 271bbb3eb9dSAl Viro goto out; 2721da177e4SLinus Torvalds 2731da177e4SLinus Torvalds lastfrag = ufsi->i_lastfrag; 2740f3c1294SAl Viro 2750f3c1294SAl Viro /* will that be a new tail? */ 2760f3c1294SAl Viro if (new_fragment < UFS_NDIR_FRAGMENT && new_fragment >= lastfrag) 2770f3c1294SAl Viro nfrags = (new_fragment & uspi->s_fpbmask) + 1; 2780f3c1294SAl Viro 2790f3c1294SAl Viro goal = 0; 2805336970bSAl Viro if (index) { 2810f3c1294SAl Viro goal = ufs_data_ptr_to_cpu(sb, 2825336970bSAl Viro ufs_get_direct_data_ptr(uspi, ufsi, index - 1)); 2830f3c1294SAl Viro if (goal) 2840f3c1294SAl Viro goal += uspi->s_fpb; 285c37336b0SEvgeniy Dushistov } 2865336970bSAl Viro tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), 2874e317ce7SAl Viro goal, uspi->s_fpb, err, locked_page); 2880f3c1294SAl Viro 2891da177e4SLinus Torvalds if (!tmp) { 2901da177e4SLinus Torvalds *err = -ENOSPC; 291177848a0SAl Viro return 0; 2921da177e4SLinus Torvalds } 2931da177e4SLinus Torvalds 2944e317ce7SAl Viro if (new) 2951da177e4SLinus Torvalds *new = 1; 2961da177e4SLinus Torvalds inode->i_ctime = CURRENT_TIME_SEC; 2971da177e4SLinus Torvalds if (IS_SYNC(inode)) 2981da177e4SLinus Torvalds ufs_sync_inode (inode); 2991da177e4SLinus Torvalds mark_inode_dirty(inode); 300bbb3eb9dSAl Viro out: 301177848a0SAl Viro return tmp + uspi->s_sbbase; 3021da177e4SLinus Torvalds 3031da177e4SLinus Torvalds /* This part : To be implemented .... 3041da177e4SLinus Torvalds Required only for writing, not required for READ-ONLY. 3051da177e4SLinus Torvalds ufs2: 3061da177e4SLinus Torvalds 3071da177e4SLinus Torvalds u2_block = ufs_fragstoblks(fragment); 3081da177e4SLinus Torvalds u2_blockoff = ufs_fragnum(fragment); 3091da177e4SLinus Torvalds p = ufsi->i_u1.u2_i_data + block; 3101da177e4SLinus Torvalds goal = 0; 3111da177e4SLinus Torvalds 3121da177e4SLinus Torvalds repeat2: 3131da177e4SLinus Torvalds tmp = fs32_to_cpu(sb, *p); 3141da177e4SLinus Torvalds lastfrag = ufsi->i_lastfrag; 3151da177e4SLinus Torvalds 3161da177e4SLinus Torvalds */ 3171da177e4SLinus Torvalds } 3181da177e4SLinus Torvalds 319022a6dc5SEvgeniy Dushistov /** 320022a6dc5SEvgeniy Dushistov * ufs_inode_getblock() - allocate new block 321edc023caSFabian Frederick * @inode: pointer to inode 322619cfac0SAl Viro * @ind_block: block number of the indirect block 323619cfac0SAl Viro * @index: number of pointer within the indirect block 324edc023caSFabian Frederick * @new_fragment: number of new allocated fragment 325022a6dc5SEvgeniy Dushistov * (block will hold this fragment and also uspi->s_fpb-1) 326edc023caSFabian Frederick * @err: see ufs_inode_getfrag() 327edc023caSFabian Frederick * @new: see ufs_inode_getfrag() 328edc023caSFabian Frederick * @locked_page: see ufs_inode_getfrag() 329022a6dc5SEvgeniy Dushistov */ 330177848a0SAl Viro static u64 331619cfac0SAl Viro ufs_inode_getblock(struct inode *inode, u64 ind_block, 332721435a7SAl Viro unsigned index, sector_t new_fragment, int *err, 3334e317ce7SAl Viro int *new, struct page *locked_page) 3341da177e4SLinus Torvalds { 335022a6dc5SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 336022a6dc5SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 337619cfac0SAl Viro int shift = uspi->s_apbshift - uspi->s_fpbshift; 338721435a7SAl Viro u64 tmp = 0, goal; 339619cfac0SAl Viro struct buffer_head *bh; 34054fb996aSEvgeniy Dushistov void *p; 3411da177e4SLinus Torvalds 342619cfac0SAl Viro if (!ind_block) 343619cfac0SAl Viro return 0; 344619cfac0SAl Viro 345619cfac0SAl Viro bh = sb_bread(sb, ind_block + (index >> shift)); 3465fbfb238SAl Viro if (unlikely(!bh)) { 3475fbfb238SAl Viro *err = -EIO; 348619cfac0SAl Viro return 0; 3495fbfb238SAl Viro } 350619cfac0SAl Viro 351619cfac0SAl Viro index &= uspi->s_apbmask >> uspi->s_fpbshift; 35254fb996aSEvgeniy Dushistov if (uspi->fs_magic == UFS2_MAGIC) 353721435a7SAl Viro p = (__fs64 *)bh->b_data + index; 35454fb996aSEvgeniy Dushistov else 355721435a7SAl Viro p = (__fs32 *)bh->b_data + index; 3565a39c255SAl Viro 35754fb996aSEvgeniy Dushistov tmp = ufs_data_ptr_to_cpu(sb, p); 358bbb3eb9dSAl Viro if (tmp) 3591da177e4SLinus Torvalds goto out; 3601da177e4SLinus Torvalds 361721435a7SAl Viro if (index && (uspi->fs_magic == UFS2_MAGIC ? 362721435a7SAl Viro (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[index-1])) : 363721435a7SAl Viro (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[index-1])))) 3641da177e4SLinus Torvalds goal = tmp + uspi->s_fpb; 3651da177e4SLinus Torvalds else 3661da177e4SLinus Torvalds goal = bh->b_blocknr + uspi->s_fpb; 3676ef4d6bfSEvgeniy Dushistov tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal, 3686ef4d6bfSEvgeniy Dushistov uspi->s_fpb, err, locked_page); 3695a39c255SAl Viro if (!tmp) 3701da177e4SLinus Torvalds goto out; 371c9a27b5dSEvgeniy Dushistov 372bbb3eb9dSAl Viro if (new) 3731da177e4SLinus Torvalds *new = 1; 3741da177e4SLinus Torvalds 3751da177e4SLinus Torvalds mark_buffer_dirty(bh); 3761da177e4SLinus Torvalds if (IS_SYNC(inode)) 3771da177e4SLinus Torvalds sync_dirty_buffer(bh); 3781da177e4SLinus Torvalds inode->i_ctime = CURRENT_TIME_SEC; 3791da177e4SLinus Torvalds mark_inode_dirty(inode); 3801da177e4SLinus Torvalds out: 3811da177e4SLinus Torvalds brelse (bh); 382abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 383177848a0SAl Viro if (tmp) 384177848a0SAl Viro tmp += uspi->s_sbbase; 385177848a0SAl Viro return tmp; 3861da177e4SLinus Torvalds } 3871da177e4SLinus Torvalds 388022a6dc5SEvgeniy Dushistov /** 3897422caa5SAlessio Igor Bogani * ufs_getfrag_block() - `get_block_t' function, interface between UFS and 390022a6dc5SEvgeniy Dushistov * readpage, writepage and so on 3911da177e4SLinus Torvalds */ 3921da177e4SLinus Torvalds 393010d331fSAl Viro static int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create) 3941da177e4SLinus Torvalds { 3951da177e4SLinus Torvalds struct super_block *sb = inode->i_sb; 3960385f1f9SAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 3970385f1f9SAl Viro int err = 0, new = 0; 3984b7068c8SAl Viro unsigned offsets[4]; 3994b7068c8SAl Viro int depth = ufs_block_to_path(inode, fragment >> uspi->s_fpbshift, offsets); 4001da177e4SLinus Torvalds u64 phys64 = 0; 401177848a0SAl Viro unsigned frag = fragment & uspi->s_fpbmask; 4021da177e4SLinus Torvalds 4031da177e4SLinus Torvalds if (!create) { 4044b7068c8SAl Viro phys64 = ufs_frag_map(inode, offsets, depth); 4050385f1f9SAl Viro goto out; 4061da177e4SLinus Torvalds } 4071da177e4SLinus Torvalds 4081da177e4SLinus Torvalds /* This code entered only while writing ....? */ 4091da177e4SLinus Torvalds 410724bb09fSAl Viro mutex_lock(&UFS_I(inode)->truncate_mutex); 4111da177e4SLinus Torvalds 412abf5d15fSEvgeniy Dushistov UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment); 4130385f1f9SAl Viro if (unlikely(!depth)) { 4140385f1f9SAl Viro ufs_warning(sb, "ufs_get_block", "block > big"); 4150385f1f9SAl Viro err = -EIO; 4160385f1f9SAl Viro goto out; 4170385f1f9SAl Viro } 4180f3c1294SAl Viro 4190f3c1294SAl Viro if (UFS_I(inode)->i_lastfrag < UFS_NDIR_FRAGMENT) { 4200f3c1294SAl Viro unsigned lastfrag = UFS_I(inode)->i_lastfrag; 4210f3c1294SAl Viro unsigned tailfrags = lastfrag & uspi->s_fpbmask; 4220f3c1294SAl Viro if (tailfrags && fragment >= lastfrag) { 4230f3c1294SAl Viro if (!ufs_extend_tail(inode, fragment, 4240f3c1294SAl Viro &err, bh_result->b_page)) 4250385f1f9SAl Viro goto out; 4260f3c1294SAl Viro } 4270f3c1294SAl Viro } 4280f3c1294SAl Viro 42971dd4284SAl Viro if (depth == 1) { 4305336970bSAl Viro phys64 = ufs_inode_getfrag(inode, offsets[0], fragment, 4314e317ce7SAl Viro &err, &new, bh_result->b_page); 4324eeff4c9SAl Viro } else { 4334eeff4c9SAl Viro int i; 4345336970bSAl Viro phys64 = ufs_inode_getfrag(inode, offsets[0], fragment, 4354e317ce7SAl Viro &err, NULL, NULL); 4364eeff4c9SAl Viro for (i = 1; i < depth - 1; i++) 4374eeff4c9SAl Viro phys64 = ufs_inode_getblock(inode, phys64, offsets[i], 4384e317ce7SAl Viro fragment, &err, NULL, NULL); 439619cfac0SAl Viro phys64 = ufs_inode_getblock(inode, phys64, offsets[depth - 1], 4404e317ce7SAl Viro fragment, &err, &new, bh_result->b_page); 4414eeff4c9SAl Viro } 4420385f1f9SAl Viro out: 443177848a0SAl Viro if (phys64) { 444177848a0SAl Viro phys64 += frag; 4450385f1f9SAl Viro map_bh(bh_result, sb, phys64); 4461da177e4SLinus Torvalds if (new) 4471da177e4SLinus Torvalds set_buffer_new(bh_result); 4480385f1f9SAl Viro } 449724bb09fSAl Viro mutex_unlock(&UFS_I(inode)->truncate_mutex); 4501da177e4SLinus Torvalds return err; 4511da177e4SLinus Torvalds } 4521da177e4SLinus Torvalds 4531da177e4SLinus Torvalds static int ufs_writepage(struct page *page, struct writeback_control *wbc) 4541da177e4SLinus Torvalds { 4551da177e4SLinus Torvalds return block_write_full_page(page,ufs_getfrag_block,wbc); 4561da177e4SLinus Torvalds } 45782b9d1d0SNick Piggin 4581da177e4SLinus Torvalds static int ufs_readpage(struct file *file, struct page *page) 4591da177e4SLinus Torvalds { 4601da177e4SLinus Torvalds return block_read_full_page(page,ufs_getfrag_block); 4611da177e4SLinus Torvalds } 46282b9d1d0SNick Piggin 463f4e420dcSChristoph Hellwig int ufs_prepare_chunk(struct page *page, loff_t pos, unsigned len) 4641da177e4SLinus Torvalds { 4656e1db88dSChristoph Hellwig return __block_write_begin(page, pos, len, ufs_getfrag_block); 4661da177e4SLinus Torvalds } 46782b9d1d0SNick Piggin 468010d331fSAl Viro static void ufs_truncate_blocks(struct inode *); 469010d331fSAl Viro 47083f6e371SMarco Stornelli static void ufs_write_failed(struct address_space *mapping, loff_t to) 47183f6e371SMarco Stornelli { 47283f6e371SMarco Stornelli struct inode *inode = mapping->host; 47383f6e371SMarco Stornelli 4743b7a3a05SAl Viro if (to > inode->i_size) { 4757caef267SKirill A. Shutemov truncate_pagecache(inode, inode->i_size); 4763b7a3a05SAl Viro ufs_truncate_blocks(inode); 4773b7a3a05SAl Viro } 47883f6e371SMarco Stornelli } 47983f6e371SMarco Stornelli 48082b9d1d0SNick Piggin static int ufs_write_begin(struct file *file, struct address_space *mapping, 48182b9d1d0SNick Piggin loff_t pos, unsigned len, unsigned flags, 48282b9d1d0SNick Piggin struct page **pagep, void **fsdata) 48382b9d1d0SNick Piggin { 484155130a4SChristoph Hellwig int ret; 485155130a4SChristoph Hellwig 486155130a4SChristoph Hellwig ret = block_write_begin(mapping, pos, len, flags, pagep, 487f4e420dcSChristoph Hellwig ufs_getfrag_block); 48883f6e371SMarco Stornelli if (unlikely(ret)) 48983f6e371SMarco Stornelli ufs_write_failed(mapping, pos + len); 490155130a4SChristoph Hellwig 491155130a4SChristoph Hellwig return ret; 49282b9d1d0SNick Piggin } 49382b9d1d0SNick Piggin 4943b7a3a05SAl Viro static int ufs_write_end(struct file *file, struct address_space *mapping, 4953b7a3a05SAl Viro loff_t pos, unsigned len, unsigned copied, 4963b7a3a05SAl Viro struct page *page, void *fsdata) 4973b7a3a05SAl Viro { 4983b7a3a05SAl Viro int ret; 4993b7a3a05SAl Viro 5003b7a3a05SAl Viro ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata); 5013b7a3a05SAl Viro if (ret < len) 5023b7a3a05SAl Viro ufs_write_failed(mapping, pos + len); 5033b7a3a05SAl Viro return ret; 5043b7a3a05SAl Viro } 5053b7a3a05SAl Viro 5061da177e4SLinus Torvalds static sector_t ufs_bmap(struct address_space *mapping, sector_t block) 5071da177e4SLinus Torvalds { 5081da177e4SLinus Torvalds return generic_block_bmap(mapping,block,ufs_getfrag_block); 5091da177e4SLinus Torvalds } 51082b9d1d0SNick Piggin 511f5e54d6eSChristoph Hellwig const struct address_space_operations ufs_aops = { 5121da177e4SLinus Torvalds .readpage = ufs_readpage, 5131da177e4SLinus Torvalds .writepage = ufs_writepage, 51482b9d1d0SNick Piggin .write_begin = ufs_write_begin, 5153b7a3a05SAl Viro .write_end = ufs_write_end, 5161da177e4SLinus Torvalds .bmap = ufs_bmap 5171da177e4SLinus Torvalds }; 5181da177e4SLinus Torvalds 519826843a3SEvgeniy Dushistov static void ufs_set_inode_ops(struct inode *inode) 520826843a3SEvgeniy Dushistov { 521826843a3SEvgeniy Dushistov if (S_ISREG(inode->i_mode)) { 522826843a3SEvgeniy Dushistov inode->i_op = &ufs_file_inode_operations; 523826843a3SEvgeniy Dushistov inode->i_fop = &ufs_file_operations; 524826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 525826843a3SEvgeniy Dushistov } else if (S_ISDIR(inode->i_mode)) { 526826843a3SEvgeniy Dushistov inode->i_op = &ufs_dir_inode_operations; 527826843a3SEvgeniy Dushistov inode->i_fop = &ufs_dir_operations; 528826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 529826843a3SEvgeniy Dushistov } else if (S_ISLNK(inode->i_mode)) { 5304b8061a6SAl Viro if (!inode->i_blocks) { 531826843a3SEvgeniy Dushistov inode->i_op = &ufs_fast_symlink_inode_operations; 5324b8061a6SAl Viro inode->i_link = (char *)UFS_I(inode)->i_u1.i_symlink; 5334b8061a6SAl Viro } else { 534311b9549SDmitry Monakhov inode->i_op = &ufs_symlink_inode_operations; 535826843a3SEvgeniy Dushistov inode->i_mapping->a_ops = &ufs_aops; 536826843a3SEvgeniy Dushistov } 537826843a3SEvgeniy Dushistov } else 538826843a3SEvgeniy Dushistov init_special_inode(inode, inode->i_mode, 539826843a3SEvgeniy Dushistov ufs_get_inode_dev(inode->i_sb, UFS_I(inode))); 540826843a3SEvgeniy Dushistov } 541826843a3SEvgeniy Dushistov 54207a0cfecSEvgeniy Dushistov static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode) 5431da177e4SLinus Torvalds { 5441da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 54505f225dcSEvgeniy Dushistov struct super_block *sb = inode->i_sb; 5466a9a06d9SAl Viro umode_t mode; 5471da177e4SLinus Torvalds 5481da177e4SLinus Torvalds /* 5491da177e4SLinus Torvalds * Copy data to the in-core inode. 5501da177e4SLinus Torvalds */ 5511da177e4SLinus Torvalds inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode); 552bfe86848SMiklos Szeredi set_nlink(inode, fs16_to_cpu(sb, ufs_inode->ui_nlink)); 55307a0cfecSEvgeniy Dushistov if (inode->i_nlink == 0) { 5541da177e4SLinus Torvalds ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 55507a0cfecSEvgeniy Dushistov return -1; 55607a0cfecSEvgeniy Dushistov } 5571da177e4SLinus Torvalds 5581da177e4SLinus Torvalds /* 5591da177e4SLinus Torvalds * Linux now has 32-bit uid and gid, so we can support EFT. 5601da177e4SLinus Torvalds */ 56172235465SEric W. Biederman i_uid_write(inode, ufs_get_inode_uid(sb, ufs_inode)); 56272235465SEric W. Biederman i_gid_write(inode, ufs_get_inode_gid(sb, ufs_inode)); 5631da177e4SLinus Torvalds 5641da177e4SLinus Torvalds inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); 5651da177e4SLinus Torvalds inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); 5661da177e4SLinus Torvalds inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); 5671da177e4SLinus Torvalds inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); 5681da177e4SLinus Torvalds inode->i_mtime.tv_nsec = 0; 5691da177e4SLinus Torvalds inode->i_atime.tv_nsec = 0; 5701da177e4SLinus Torvalds inode->i_ctime.tv_nsec = 0; 5711da177e4SLinus Torvalds inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); 5723313e292SEvgeniy Dushistov inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen); 5731da177e4SLinus Torvalds ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); 5741da177e4SLinus Torvalds ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 5751da177e4SLinus Torvalds ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 57605f225dcSEvgeniy Dushistov 5771da177e4SLinus Torvalds 5781da177e4SLinus Torvalds if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 579f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr, 580f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 581dd187a26SEvgeniy Dushistov } else { 582f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink, 583b12903f1SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink) - 1); 584b12903f1SDuane Griffin ufsi->i_u1.i_symlink[sizeof(ufs_inode->ui_u2.ui_symlink) - 1] = 0; 5851da177e4SLinus Torvalds } 58607a0cfecSEvgeniy Dushistov return 0; 58705f225dcSEvgeniy Dushistov } 5881da177e4SLinus Torvalds 58907a0cfecSEvgeniy Dushistov static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode) 59005f225dcSEvgeniy Dushistov { 59105f225dcSEvgeniy Dushistov struct ufs_inode_info *ufsi = UFS_I(inode); 59205f225dcSEvgeniy Dushistov struct super_block *sb = inode->i_sb; 5936a9a06d9SAl Viro umode_t mode; 5941da177e4SLinus Torvalds 595abf5d15fSEvgeniy Dushistov UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino); 5961da177e4SLinus Torvalds /* 5971da177e4SLinus Torvalds * Copy data to the in-core inode. 5981da177e4SLinus Torvalds */ 5991da177e4SLinus Torvalds inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode); 600bfe86848SMiklos Szeredi set_nlink(inode, fs16_to_cpu(sb, ufs2_inode->ui_nlink)); 60107a0cfecSEvgeniy Dushistov if (inode->i_nlink == 0) { 6021da177e4SLinus Torvalds ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); 60307a0cfecSEvgeniy Dushistov return -1; 60407a0cfecSEvgeniy Dushistov } 6051da177e4SLinus Torvalds 6061da177e4SLinus Torvalds /* 6071da177e4SLinus Torvalds * Linux now has 32-bit uid and gid, so we can support EFT. 6081da177e4SLinus Torvalds */ 60972235465SEric W. Biederman i_uid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_uid)); 61072235465SEric W. Biederman i_gid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_gid)); 6111da177e4SLinus Torvalds 6121da177e4SLinus Torvalds inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size); 6132189850fSEvgeniy Dushistov inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime); 6142189850fSEvgeniy Dushistov inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime); 6152189850fSEvgeniy Dushistov inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime); 6162189850fSEvgeniy Dushistov inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec); 6172189850fSEvgeniy Dushistov inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec); 6182189850fSEvgeniy Dushistov inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec); 6191da177e4SLinus Torvalds inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks); 6203313e292SEvgeniy Dushistov inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen); 6211da177e4SLinus Torvalds ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags); 6221da177e4SLinus Torvalds /* 6231da177e4SLinus Torvalds ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); 6241da177e4SLinus Torvalds ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); 6251da177e4SLinus Torvalds */ 6261da177e4SLinus Torvalds 6271da177e4SLinus Torvalds if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { 628f33219b7SDuane Griffin memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr, 629f33219b7SDuane Griffin sizeof(ufs2_inode->ui_u2.ui_addr)); 63005f225dcSEvgeniy Dushistov } else { 631f33219b7SDuane Griffin memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink, 632b12903f1SDuane Griffin sizeof(ufs2_inode->ui_u2.ui_symlink) - 1); 633b12903f1SDuane Griffin ufsi->i_u1.i_symlink[sizeof(ufs2_inode->ui_u2.ui_symlink) - 1] = 0; 6341da177e4SLinus Torvalds } 63507a0cfecSEvgeniy Dushistov return 0; 63605f225dcSEvgeniy Dushistov } 63705f225dcSEvgeniy Dushistov 638b55c460dSDavid Howells struct inode *ufs_iget(struct super_block *sb, unsigned long ino) 63905f225dcSEvgeniy Dushistov { 640b55c460dSDavid Howells struct ufs_inode_info *ufsi; 641b55c460dSDavid Howells struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 64205f225dcSEvgeniy Dushistov struct buffer_head * bh; 643b55c460dSDavid Howells struct inode *inode; 64407a0cfecSEvgeniy Dushistov int err; 64505f225dcSEvgeniy Dushistov 646b55c460dSDavid Howells UFSD("ENTER, ino %lu\n", ino); 64705f225dcSEvgeniy Dushistov 648b55c460dSDavid Howells if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) { 64905f225dcSEvgeniy Dushistov ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n", 650b55c460dSDavid Howells ino); 651b55c460dSDavid Howells return ERR_PTR(-EIO); 65205f225dcSEvgeniy Dushistov } 65305f225dcSEvgeniy Dushistov 654b55c460dSDavid Howells inode = iget_locked(sb, ino); 655b55c460dSDavid Howells if (!inode) 656b55c460dSDavid Howells return ERR_PTR(-ENOMEM); 657b55c460dSDavid Howells if (!(inode->i_state & I_NEW)) 658b55c460dSDavid Howells return inode; 659b55c460dSDavid Howells 660b55c460dSDavid Howells ufsi = UFS_I(inode); 661b55c460dSDavid Howells 66205f225dcSEvgeniy Dushistov bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino)); 66305f225dcSEvgeniy Dushistov if (!bh) { 66405f225dcSEvgeniy Dushistov ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n", 66505f225dcSEvgeniy Dushistov inode->i_ino); 66605f225dcSEvgeniy Dushistov goto bad_inode; 66705f225dcSEvgeniy Dushistov } 66805f225dcSEvgeniy Dushistov if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { 66905f225dcSEvgeniy Dushistov struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 67005f225dcSEvgeniy Dushistov 67107a0cfecSEvgeniy Dushistov err = ufs2_read_inode(inode, 67205f225dcSEvgeniy Dushistov ufs2_inode + ufs_inotofsbo(inode->i_ino)); 67305f225dcSEvgeniy Dushistov } else { 67405f225dcSEvgeniy Dushistov struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data; 67505f225dcSEvgeniy Dushistov 67607a0cfecSEvgeniy Dushistov err = ufs1_read_inode(inode, 67707a0cfecSEvgeniy Dushistov ufs_inode + ufs_inotofsbo(inode->i_ino)); 67805f225dcSEvgeniy Dushistov } 67905f225dcSEvgeniy Dushistov 68007a0cfecSEvgeniy Dushistov if (err) 68107a0cfecSEvgeniy Dushistov goto bad_inode; 68205f225dcSEvgeniy Dushistov inode->i_version++; 68305f225dcSEvgeniy Dushistov ufsi->i_lastfrag = 68405f225dcSEvgeniy Dushistov (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; 68505f225dcSEvgeniy Dushistov ufsi->i_dir_start_lookup = 0; 6861da177e4SLinus Torvalds ufsi->i_osync = 0; 6871da177e4SLinus Torvalds 688826843a3SEvgeniy Dushistov ufs_set_inode_ops(inode); 6891da177e4SLinus Torvalds 6901da177e4SLinus Torvalds brelse(bh); 6911da177e4SLinus Torvalds 692abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 693b55c460dSDavid Howells unlock_new_inode(inode); 694b55c460dSDavid Howells return inode; 69505f225dcSEvgeniy Dushistov 69605f225dcSEvgeniy Dushistov bad_inode: 697b55c460dSDavid Howells iget_failed(inode); 698b55c460dSDavid Howells return ERR_PTR(-EIO); 6991da177e4SLinus Torvalds } 7001da177e4SLinus Torvalds 7013313e292SEvgeniy Dushistov static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode) 7021da177e4SLinus Torvalds { 7033313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 7041da177e4SLinus Torvalds struct ufs_inode_info *ufsi = UFS_I(inode); 7051da177e4SLinus Torvalds 7061da177e4SLinus Torvalds ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 7071da177e4SLinus Torvalds ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 7081da177e4SLinus Torvalds 70972235465SEric W. Biederman ufs_set_inode_uid(sb, ufs_inode, i_uid_read(inode)); 71072235465SEric W. Biederman ufs_set_inode_gid(sb, ufs_inode, i_gid_read(inode)); 7111da177e4SLinus Torvalds 7121da177e4SLinus Torvalds ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 7131da177e4SLinus Torvalds ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec); 7141da177e4SLinus Torvalds ufs_inode->ui_atime.tv_usec = 0; 7151da177e4SLinus Torvalds ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec); 7161da177e4SLinus Torvalds ufs_inode->ui_ctime.tv_usec = 0; 7171da177e4SLinus Torvalds ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec); 7181da177e4SLinus Torvalds ufs_inode->ui_mtime.tv_usec = 0; 7191da177e4SLinus Torvalds ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks); 7201da177e4SLinus Torvalds ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 7213313e292SEvgeniy Dushistov ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); 7221da177e4SLinus Torvalds 7233313e292SEvgeniy Dushistov if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) { 7241da177e4SLinus Torvalds ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow); 7251da177e4SLinus Torvalds ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag); 7261da177e4SLinus Torvalds } 7271da177e4SLinus Torvalds 7281da177e4SLinus Torvalds if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 7291da177e4SLinus Torvalds /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 7301da177e4SLinus Torvalds ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0]; 7311da177e4SLinus Torvalds } else if (inode->i_blocks) { 732f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data, 733f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 7341da177e4SLinus Torvalds } 7351da177e4SLinus Torvalds else { 736f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, 737f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink)); 7381da177e4SLinus Torvalds } 7391da177e4SLinus Torvalds 7401da177e4SLinus Torvalds if (!inode->i_nlink) 7411da177e4SLinus Torvalds memset (ufs_inode, 0, sizeof(struct ufs_inode)); 7423313e292SEvgeniy Dushistov } 7433313e292SEvgeniy Dushistov 7443313e292SEvgeniy Dushistov static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode) 7453313e292SEvgeniy Dushistov { 7463313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 7473313e292SEvgeniy Dushistov struct ufs_inode_info *ufsi = UFS_I(inode); 7483313e292SEvgeniy Dushistov 7493313e292SEvgeniy Dushistov UFSD("ENTER\n"); 7503313e292SEvgeniy Dushistov ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); 7513313e292SEvgeniy Dushistov ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); 7523313e292SEvgeniy Dushistov 75372235465SEric W. Biederman ufs_inode->ui_uid = cpu_to_fs32(sb, i_uid_read(inode)); 75472235465SEric W. Biederman ufs_inode->ui_gid = cpu_to_fs32(sb, i_gid_read(inode)); 7553313e292SEvgeniy Dushistov 7563313e292SEvgeniy Dushistov ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); 7572189850fSEvgeniy Dushistov ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec); 7582189850fSEvgeniy Dushistov ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec); 7592189850fSEvgeniy Dushistov ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec); 7602189850fSEvgeniy Dushistov ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec); 7612189850fSEvgeniy Dushistov ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec); 7622189850fSEvgeniy Dushistov ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec); 7633313e292SEvgeniy Dushistov 7643313e292SEvgeniy Dushistov ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks); 7653313e292SEvgeniy Dushistov ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); 7663313e292SEvgeniy Dushistov ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation); 7673313e292SEvgeniy Dushistov 7683313e292SEvgeniy Dushistov if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 7693313e292SEvgeniy Dushistov /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ 7703313e292SEvgeniy Dushistov ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0]; 7713313e292SEvgeniy Dushistov } else if (inode->i_blocks) { 772f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data, 773f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_addr)); 7743313e292SEvgeniy Dushistov } else { 775f33219b7SDuane Griffin memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink, 776f33219b7SDuane Griffin sizeof(ufs_inode->ui_u2.ui_symlink)); 7773313e292SEvgeniy Dushistov } 7783313e292SEvgeniy Dushistov 7793313e292SEvgeniy Dushistov if (!inode->i_nlink) 7803313e292SEvgeniy Dushistov memset (ufs_inode, 0, sizeof(struct ufs2_inode)); 7813313e292SEvgeniy Dushistov UFSD("EXIT\n"); 7823313e292SEvgeniy Dushistov } 7833313e292SEvgeniy Dushistov 7843313e292SEvgeniy Dushistov static int ufs_update_inode(struct inode * inode, int do_sync) 7853313e292SEvgeniy Dushistov { 7863313e292SEvgeniy Dushistov struct super_block *sb = inode->i_sb; 7873313e292SEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 7883313e292SEvgeniy Dushistov struct buffer_head * bh; 7893313e292SEvgeniy Dushistov 7903313e292SEvgeniy Dushistov UFSD("ENTER, ino %lu\n", inode->i_ino); 7913313e292SEvgeniy Dushistov 7923313e292SEvgeniy Dushistov if (inode->i_ino < UFS_ROOTINO || 7933313e292SEvgeniy Dushistov inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { 7943313e292SEvgeniy Dushistov ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); 7953313e292SEvgeniy Dushistov return -1; 7963313e292SEvgeniy Dushistov } 7973313e292SEvgeniy Dushistov 7983313e292SEvgeniy Dushistov bh = sb_bread(sb, ufs_inotofsba(inode->i_ino)); 7993313e292SEvgeniy Dushistov if (!bh) { 8003313e292SEvgeniy Dushistov ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); 8013313e292SEvgeniy Dushistov return -1; 8023313e292SEvgeniy Dushistov } 8033313e292SEvgeniy Dushistov if (uspi->fs_magic == UFS2_MAGIC) { 8043313e292SEvgeniy Dushistov struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data; 8053313e292SEvgeniy Dushistov 8063313e292SEvgeniy Dushistov ufs2_update_inode(inode, 8073313e292SEvgeniy Dushistov ufs2_inode + ufs_inotofsbo(inode->i_ino)); 8083313e292SEvgeniy Dushistov } else { 8093313e292SEvgeniy Dushistov struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data; 8103313e292SEvgeniy Dushistov 8113313e292SEvgeniy Dushistov ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino)); 8123313e292SEvgeniy Dushistov } 8131da177e4SLinus Torvalds 8141da177e4SLinus Torvalds mark_buffer_dirty(bh); 8151da177e4SLinus Torvalds if (do_sync) 8161da177e4SLinus Torvalds sync_dirty_buffer(bh); 8171da177e4SLinus Torvalds brelse (bh); 8181da177e4SLinus Torvalds 819abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 8201da177e4SLinus Torvalds return 0; 8211da177e4SLinus Torvalds } 8221da177e4SLinus Torvalds 823a9185b41SChristoph Hellwig int ufs_write_inode(struct inode *inode, struct writeback_control *wbc) 8241da177e4SLinus Torvalds { 825f3e0f3daSAl Viro return ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL); 8261da177e4SLinus Torvalds } 8271da177e4SLinus Torvalds 8281da177e4SLinus Torvalds int ufs_sync_inode (struct inode *inode) 8291da177e4SLinus Torvalds { 8301da177e4SLinus Torvalds return ufs_update_inode (inode, 1); 8311da177e4SLinus Torvalds } 8321da177e4SLinus Torvalds 83358e8268cSAl Viro void ufs_evict_inode(struct inode * inode) 8341da177e4SLinus Torvalds { 83558e8268cSAl Viro int want_delete = 0; 83658e8268cSAl Viro 83758e8268cSAl Viro if (!inode->i_nlink && !is_bad_inode(inode)) 83858e8268cSAl Viro want_delete = 1; 83910e5dce0SEvgeniy Dushistov 84091b0abe3SJohannes Weiner truncate_inode_pages_final(&inode->i_data); 84158e8268cSAl Viro if (want_delete) { 8421da177e4SLinus Torvalds inode->i_size = 0; 843d622f167SAl Viro if (inode->i_blocks) 844d622f167SAl Viro ufs_truncate_blocks(inode); 84558e8268cSAl Viro } 84658e8268cSAl Viro 84758e8268cSAl Viro invalidate_inode_buffers(inode); 848dbd5768fSJan Kara clear_inode(inode); 84958e8268cSAl Viro 850f3e0f3daSAl Viro if (want_delete) 8511da177e4SLinus Torvalds ufs_free_inode(inode); 8521da177e4SLinus Torvalds } 853010d331fSAl Viro 854a138b4b6SAl Viro struct to_free { 855a138b4b6SAl Viro struct inode *inode; 856a138b4b6SAl Viro u64 to; 857a138b4b6SAl Viro unsigned count; 858a138b4b6SAl Viro }; 859a138b4b6SAl Viro 860a138b4b6SAl Viro static inline void free_data(struct to_free *ctx, u64 from, unsigned count) 861a138b4b6SAl Viro { 862a138b4b6SAl Viro if (ctx->count && ctx->to != from) { 863a138b4b6SAl Viro ufs_free_blocks(ctx->inode, ctx->to - ctx->count, ctx->count); 864a138b4b6SAl Viro ctx->count = 0; 865a138b4b6SAl Viro } 866a138b4b6SAl Viro ctx->count += count; 867a138b4b6SAl Viro ctx->to = from + count; 868a138b4b6SAl Viro } 869a138b4b6SAl Viro 870010d331fSAl Viro #define DIRECT_BLOCK ((inode->i_size + uspi->s_bsize - 1) >> uspi->s_bshift) 871010d331fSAl Viro #define DIRECT_FRAGMENT ((inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift) 872010d331fSAl Viro 873010d331fSAl Viro static void ufs_trunc_direct(struct inode *inode) 874010d331fSAl Viro { 875010d331fSAl Viro struct ufs_inode_info *ufsi = UFS_I(inode); 876010d331fSAl Viro struct super_block * sb; 877010d331fSAl Viro struct ufs_sb_private_info * uspi; 878010d331fSAl Viro void *p; 879010d331fSAl Viro u64 frag1, frag2, frag3, frag4, block1, block2; 880a138b4b6SAl Viro struct to_free ctx = {.inode = inode}; 881010d331fSAl Viro unsigned i, tmp; 882010d331fSAl Viro 883010d331fSAl Viro UFSD("ENTER: ino %lu\n", inode->i_ino); 884010d331fSAl Viro 885010d331fSAl Viro sb = inode->i_sb; 886010d331fSAl Viro uspi = UFS_SB(sb)->s_uspi; 887010d331fSAl Viro 888010d331fSAl Viro frag1 = DIRECT_FRAGMENT; 889010d331fSAl Viro frag4 = min_t(u64, UFS_NDIR_FRAGMENT, ufsi->i_lastfrag); 890010d331fSAl Viro frag2 = ((frag1 & uspi->s_fpbmask) ? ((frag1 | uspi->s_fpbmask) + 1) : frag1); 891010d331fSAl Viro frag3 = frag4 & ~uspi->s_fpbmask; 892010d331fSAl Viro block1 = block2 = 0; 893010d331fSAl Viro if (frag2 > frag3) { 894010d331fSAl Viro frag2 = frag4; 895010d331fSAl Viro frag3 = frag4 = 0; 896010d331fSAl Viro } else if (frag2 < frag3) { 897010d331fSAl Viro block1 = ufs_fragstoblks (frag2); 898010d331fSAl Viro block2 = ufs_fragstoblks (frag3); 899010d331fSAl Viro } 900010d331fSAl Viro 901010d331fSAl Viro UFSD("ino %lu, frag1 %llu, frag2 %llu, block1 %llu, block2 %llu," 902010d331fSAl Viro " frag3 %llu, frag4 %llu\n", inode->i_ino, 903010d331fSAl Viro (unsigned long long)frag1, (unsigned long long)frag2, 904010d331fSAl Viro (unsigned long long)block1, (unsigned long long)block2, 905010d331fSAl Viro (unsigned long long)frag3, (unsigned long long)frag4); 906010d331fSAl Viro 907010d331fSAl Viro if (frag1 >= frag2) 908010d331fSAl Viro goto next1; 909010d331fSAl Viro 910010d331fSAl Viro /* 911010d331fSAl Viro * Free first free fragments 912010d331fSAl Viro */ 913010d331fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag1)); 914010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 915010d331fSAl Viro if (!tmp ) 916010d331fSAl Viro ufs_panic (sb, "ufs_trunc_direct", "internal error"); 917010d331fSAl Viro frag2 -= frag1; 918010d331fSAl Viro frag1 = ufs_fragnum (frag1); 919010d331fSAl Viro 920010d331fSAl Viro ufs_free_fragments(inode, tmp + frag1, frag2); 921010d331fSAl Viro 922010d331fSAl Viro next1: 923010d331fSAl Viro /* 924010d331fSAl Viro * Free whole blocks 925010d331fSAl Viro */ 926010d331fSAl Viro for (i = block1 ; i < block2; i++) { 927010d331fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, i); 928010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 929010d331fSAl Viro if (!tmp) 930010d331fSAl Viro continue; 931010d331fSAl Viro write_seqlock(&ufsi->meta_lock); 932010d331fSAl Viro ufs_data_ptr_clear(uspi, p); 933010d331fSAl Viro write_sequnlock(&ufsi->meta_lock); 934010d331fSAl Viro 935a138b4b6SAl Viro free_data(&ctx, tmp, uspi->s_fpb); 936010d331fSAl Viro } 937010d331fSAl Viro 938a138b4b6SAl Viro free_data(&ctx, 0, 0); 939010d331fSAl Viro 940010d331fSAl Viro if (frag3 >= frag4) 941010d331fSAl Viro goto next3; 942010d331fSAl Viro 943010d331fSAl Viro /* 944010d331fSAl Viro * Free last free fragments 945010d331fSAl Viro */ 946010d331fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag3)); 947010d331fSAl Viro tmp = ufs_data_ptr_to_cpu(sb, p); 948010d331fSAl Viro if (!tmp ) 949010d331fSAl Viro ufs_panic(sb, "ufs_truncate_direct", "internal error"); 950010d331fSAl Viro frag4 = ufs_fragnum (frag4); 951010d331fSAl Viro write_seqlock(&ufsi->meta_lock); 952010d331fSAl Viro ufs_data_ptr_clear(uspi, p); 953010d331fSAl Viro write_sequnlock(&ufsi->meta_lock); 954010d331fSAl Viro 955010d331fSAl Viro ufs_free_fragments (inode, tmp, frag4); 956010d331fSAl Viro next3: 957010d331fSAl Viro 958010d331fSAl Viro UFSD("EXIT: ino %lu\n", inode->i_ino); 959010d331fSAl Viro } 960010d331fSAl Viro 961163073dbSAl Viro static void free_full_branch(struct inode *inode, u64 ind_block, int depth) 962010d331fSAl Viro { 9636ac36b87SAl Viro struct super_block *sb = inode->i_sb; 9646ac36b87SAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 965163073dbSAl Viro struct ufs_buffer_head *ubh = ubh_bread(sb, ind_block, uspi->s_bsize); 9666ac36b87SAl Viro unsigned i; 967010d331fSAl Viro 968163073dbSAl Viro if (!ubh) 969010d331fSAl Viro return; 970010d331fSAl Viro 9719e0fbbdeSAl Viro if (--depth) { 9726d1ebbcaSAl Viro for (i = 0; i < uspi->s_apb; i++) { 973163073dbSAl Viro void *p = ubh_get_data_ptr(uspi, ubh, i); 974163073dbSAl Viro u64 block = ufs_data_ptr_to_cpu(sb, p); 975cc7231e3SAl Viro if (block) 976163073dbSAl Viro free_full_branch(inode, block, depth); 977163073dbSAl Viro } 9786d1ebbcaSAl Viro } else { 9796d1ebbcaSAl Viro struct to_free ctx = {.inode = inode}; 9806d1ebbcaSAl Viro 9816d1ebbcaSAl Viro for (i = 0; i < uspi->s_apb; i++) { 982163073dbSAl Viro void *p = ubh_get_data_ptr(uspi, ubh, i); 983163073dbSAl Viro u64 block = ufs_data_ptr_to_cpu(sb, p); 984cc7231e3SAl Viro if (block) 985163073dbSAl Viro free_data(&ctx, block, uspi->s_fpb); 9866d1ebbcaSAl Viro } 9876d1ebbcaSAl Viro free_data(&ctx, 0, 0); 9886d1ebbcaSAl Viro } 9896d1ebbcaSAl Viro 9906d1ebbcaSAl Viro ubh_bforget(ubh); 991163073dbSAl Viro ufs_free_blocks(inode, ind_block, uspi->s_fpb); 9926d1ebbcaSAl Viro } 9936d1ebbcaSAl Viro 9947b4e4f7fSAl Viro static void free_branch_tail(struct inode *inode, unsigned from, struct ufs_buffer_head *ubh, int depth) 9956d1ebbcaSAl Viro { 9966d1ebbcaSAl Viro struct super_block *sb = inode->i_sb; 9976d1ebbcaSAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 9986d1ebbcaSAl Viro unsigned i; 9996d1ebbcaSAl Viro 10006aab6dd3SAl Viro if (--depth) { 1001a9657423SAl Viro for (i = from; i < uspi->s_apb ; i++) { 1002163073dbSAl Viro void *p = ubh_get_data_ptr(uspi, ubh, i); 1003163073dbSAl Viro u64 block = ufs_data_ptr_to_cpu(sb, p); 1004163073dbSAl Viro if (block) { 1005163073dbSAl Viro write_seqlock(&UFS_I(inode)->meta_lock); 1006163073dbSAl Viro ufs_data_ptr_clear(uspi, p); 1007163073dbSAl Viro write_sequnlock(&UFS_I(inode)->meta_lock); 1008a9657423SAl Viro ubh_mark_buffer_dirty(ubh); 1009163073dbSAl Viro free_full_branch(inode, block, depth); 1010163073dbSAl Viro } 1011a9657423SAl Viro } 10129e0fbbdeSAl Viro } else { 1013a138b4b6SAl Viro struct to_free ctx = {.inode = inode}; 10149e0fbbdeSAl Viro 10156ac36b87SAl Viro for (i = from; i < uspi->s_apb; i++) { 1016163073dbSAl Viro void *p = ubh_get_data_ptr(uspi, ubh, i); 1017163073dbSAl Viro u64 block = ufs_data_ptr_to_cpu(sb, p); 1018163073dbSAl Viro if (block) { 1019010d331fSAl Viro write_seqlock(&UFS_I(inode)->meta_lock); 1020163073dbSAl Viro ufs_data_ptr_clear(uspi, p); 1021010d331fSAl Viro write_sequnlock(&UFS_I(inode)->meta_lock); 10229e0fbbdeSAl Viro ubh_mark_buffer_dirty(ubh); 1023163073dbSAl Viro free_data(&ctx, block, uspi->s_fpb); 1024010d331fSAl Viro } 1025163073dbSAl Viro } 1026a138b4b6SAl Viro free_data(&ctx, 0, 0); 1027010d331fSAl Viro } 10289e0fbbdeSAl Viro if (IS_SYNC(inode) && ubh_buffer_dirty(ubh)) 10299e0fbbdeSAl Viro ubh_sync_block(ubh); 10309e0fbbdeSAl Viro ubh_brelse(ubh); 1031010d331fSAl Viro } 1032010d331fSAl Viro 1033010d331fSAl Viro static int ufs_alloc_lastblock(struct inode *inode, loff_t size) 1034010d331fSAl Viro { 1035010d331fSAl Viro int err = 0; 1036010d331fSAl Viro struct super_block *sb = inode->i_sb; 1037010d331fSAl Viro struct address_space *mapping = inode->i_mapping; 1038010d331fSAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 1039010d331fSAl Viro unsigned i, end; 1040010d331fSAl Viro sector_t lastfrag; 1041010d331fSAl Viro struct page *lastpage; 1042010d331fSAl Viro struct buffer_head *bh; 1043010d331fSAl Viro u64 phys64; 1044010d331fSAl Viro 1045010d331fSAl Viro lastfrag = (size + uspi->s_fsize - 1) >> uspi->s_fshift; 1046010d331fSAl Viro 1047010d331fSAl Viro if (!lastfrag) 1048010d331fSAl Viro goto out; 1049010d331fSAl Viro 1050010d331fSAl Viro lastfrag--; 1051010d331fSAl Viro 1052010d331fSAl Viro lastpage = ufs_get_locked_page(mapping, lastfrag >> 1053010d331fSAl Viro (PAGE_CACHE_SHIFT - inode->i_blkbits)); 1054010d331fSAl Viro if (IS_ERR(lastpage)) { 1055010d331fSAl Viro err = -EIO; 1056010d331fSAl Viro goto out; 1057010d331fSAl Viro } 1058010d331fSAl Viro 1059010d331fSAl Viro end = lastfrag & ((1 << (PAGE_CACHE_SHIFT - inode->i_blkbits)) - 1); 1060010d331fSAl Viro bh = page_buffers(lastpage); 1061010d331fSAl Viro for (i = 0; i < end; ++i) 1062010d331fSAl Viro bh = bh->b_this_page; 1063010d331fSAl Viro 1064010d331fSAl Viro 1065010d331fSAl Viro err = ufs_getfrag_block(inode, lastfrag, bh, 1); 1066010d331fSAl Viro 1067010d331fSAl Viro if (unlikely(err)) 1068010d331fSAl Viro goto out_unlock; 1069010d331fSAl Viro 1070010d331fSAl Viro if (buffer_new(bh)) { 1071010d331fSAl Viro clear_buffer_new(bh); 1072010d331fSAl Viro unmap_underlying_metadata(bh->b_bdev, 1073010d331fSAl Viro bh->b_blocknr); 1074010d331fSAl Viro /* 1075010d331fSAl Viro * we do not zeroize fragment, because of 1076010d331fSAl Viro * if it maped to hole, it already contains zeroes 1077010d331fSAl Viro */ 1078010d331fSAl Viro set_buffer_uptodate(bh); 1079010d331fSAl Viro mark_buffer_dirty(bh); 1080010d331fSAl Viro set_page_dirty(lastpage); 1081010d331fSAl Viro } 1082010d331fSAl Viro 1083010d331fSAl Viro if (lastfrag >= UFS_IND_FRAGMENT) { 1084010d331fSAl Viro end = uspi->s_fpb - ufs_fragnum(lastfrag) - 1; 1085010d331fSAl Viro phys64 = bh->b_blocknr + 1; 1086010d331fSAl Viro for (i = 0; i < end; ++i) { 1087010d331fSAl Viro bh = sb_getblk(sb, i + phys64); 1088010d331fSAl Viro lock_buffer(bh); 1089010d331fSAl Viro memset(bh->b_data, 0, sb->s_blocksize); 1090010d331fSAl Viro set_buffer_uptodate(bh); 1091010d331fSAl Viro mark_buffer_dirty(bh); 1092010d331fSAl Viro unlock_buffer(bh); 1093010d331fSAl Viro sync_dirty_buffer(bh); 1094010d331fSAl Viro brelse(bh); 1095010d331fSAl Viro } 1096010d331fSAl Viro } 1097010d331fSAl Viro out_unlock: 1098010d331fSAl Viro ufs_put_locked_page(lastpage); 1099010d331fSAl Viro out: 1100010d331fSAl Viro return err; 1101010d331fSAl Viro } 1102010d331fSAl Viro 1103010d331fSAl Viro static void __ufs_truncate_blocks(struct inode *inode) 1104010d331fSAl Viro { 1105010d331fSAl Viro struct ufs_inode_info *ufsi = UFS_I(inode); 1106010d331fSAl Viro struct super_block *sb = inode->i_sb; 1107010d331fSAl Viro struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 11087bad5939SAl Viro unsigned offsets[4]; 110931cd043eSAl Viro int depth = ufs_block_to_path(inode, DIRECT_BLOCK, offsets); 11106775e24dSAl Viro int depth2; 111142432739SAl Viro unsigned i; 11127b4e4f7fSAl Viro struct ufs_buffer_head *ubh[3]; 11137b4e4f7fSAl Viro void *p; 11147b4e4f7fSAl Viro u64 block; 11156775e24dSAl Viro 11166775e24dSAl Viro if (!depth) 11176775e24dSAl Viro return; 11186775e24dSAl Viro 11196775e24dSAl Viro /* find the last non-zero in offsets[] */ 11206775e24dSAl Viro for (depth2 = depth - 1; depth2; depth2--) 11216775e24dSAl Viro if (offsets[depth2]) 11226775e24dSAl Viro break; 1123010d331fSAl Viro 1124010d331fSAl Viro mutex_lock(&ufsi->truncate_mutex); 112542432739SAl Viro if (depth == 1) { 1126010d331fSAl Viro ufs_trunc_direct(inode); 112742432739SAl Viro offsets[0] = UFS_IND_BLOCK; 112842432739SAl Viro } else { 11297b4e4f7fSAl Viro /* get the blocks that should be partially emptied */ 11307b4e4f7fSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, offsets[0]); 11317b4e4f7fSAl Viro for (i = 0; i < depth2; i++) { 11327b4e4f7fSAl Viro offsets[i]++; /* next branch is fully freed */ 11337b4e4f7fSAl Viro block = ufs_data_ptr_to_cpu(sb, p); 11347b4e4f7fSAl Viro if (!block) 11357b4e4f7fSAl Viro break; 11367b4e4f7fSAl Viro ubh[i] = ubh_bread(sb, block, uspi->s_bsize); 11377b4e4f7fSAl Viro if (!ubh[i]) { 11387b4e4f7fSAl Viro write_seqlock(&ufsi->meta_lock); 11397b4e4f7fSAl Viro ufs_data_ptr_clear(uspi, p); 11407b4e4f7fSAl Viro write_sequnlock(&ufsi->meta_lock); 11417b4e4f7fSAl Viro break; 11427b4e4f7fSAl Viro } 11437b4e4f7fSAl Viro p = ubh_get_data_ptr(uspi, ubh[i], offsets[i + 1]); 11447b4e4f7fSAl Viro } 1145f53bd142SAl Viro while (i--) 11467b4e4f7fSAl Viro free_branch_tail(inode, offsets[i + 1], ubh[i], depth - i - 1); 11477b4e4f7fSAl Viro } 114842432739SAl Viro for (i = offsets[0]; i <= UFS_TIND_BLOCK; i++) { 1149163073dbSAl Viro p = ufs_get_direct_data_ptr(uspi, ufsi, i); 1150163073dbSAl Viro block = ufs_data_ptr_to_cpu(sb, p); 1151163073dbSAl Viro if (block) { 1152163073dbSAl Viro write_seqlock(&ufsi->meta_lock); 1153163073dbSAl Viro ufs_data_ptr_clear(uspi, p); 1154163073dbSAl Viro write_sequnlock(&ufsi->meta_lock); 1155163073dbSAl Viro free_full_branch(inode, block, i - UFS_IND_BLOCK + 1); 1156163073dbSAl Viro } 115742432739SAl Viro } 1158010d331fSAl Viro ufsi->i_lastfrag = DIRECT_FRAGMENT; 1159b6eede0eSAl Viro mark_inode_dirty(inode); 1160010d331fSAl Viro mutex_unlock(&ufsi->truncate_mutex); 1161010d331fSAl Viro } 1162010d331fSAl Viro 1163010d331fSAl Viro static int ufs_truncate(struct inode *inode, loff_t size) 1164010d331fSAl Viro { 1165010d331fSAl Viro int err = 0; 1166010d331fSAl Viro 1167010d331fSAl Viro UFSD("ENTER: ino %lu, i_size: %llu, old_i_size: %llu\n", 1168010d331fSAl Viro inode->i_ino, (unsigned long long)size, 1169010d331fSAl Viro (unsigned long long)i_size_read(inode)); 1170010d331fSAl Viro 1171010d331fSAl Viro if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1172010d331fSAl Viro S_ISLNK(inode->i_mode))) 1173010d331fSAl Viro return -EINVAL; 1174010d331fSAl Viro if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) 1175010d331fSAl Viro return -EPERM; 1176010d331fSAl Viro 1177010d331fSAl Viro err = ufs_alloc_lastblock(inode, size); 1178010d331fSAl Viro 1179010d331fSAl Viro if (err) 1180010d331fSAl Viro goto out; 1181010d331fSAl Viro 1182010d331fSAl Viro block_truncate_page(inode->i_mapping, size, ufs_getfrag_block); 1183010d331fSAl Viro 1184010d331fSAl Viro truncate_setsize(inode, size); 1185010d331fSAl Viro 1186010d331fSAl Viro __ufs_truncate_blocks(inode); 1187010d331fSAl Viro inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC; 1188010d331fSAl Viro mark_inode_dirty(inode); 1189010d331fSAl Viro out: 1190010d331fSAl Viro UFSD("EXIT: err %d\n", err); 1191010d331fSAl Viro return err; 1192010d331fSAl Viro } 1193010d331fSAl Viro 1194010d331fSAl Viro void ufs_truncate_blocks(struct inode *inode) 1195010d331fSAl Viro { 1196010d331fSAl Viro if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || 1197010d331fSAl Viro S_ISLNK(inode->i_mode))) 1198010d331fSAl Viro return; 1199010d331fSAl Viro if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) 1200010d331fSAl Viro return; 1201010d331fSAl Viro __ufs_truncate_blocks(inode); 1202010d331fSAl Viro } 1203010d331fSAl Viro 1204010d331fSAl Viro int ufs_setattr(struct dentry *dentry, struct iattr *attr) 1205010d331fSAl Viro { 1206010d331fSAl Viro struct inode *inode = d_inode(dentry); 1207010d331fSAl Viro unsigned int ia_valid = attr->ia_valid; 1208010d331fSAl Viro int error; 1209010d331fSAl Viro 1210010d331fSAl Viro error = inode_change_ok(inode, attr); 1211010d331fSAl Viro if (error) 1212010d331fSAl Viro return error; 1213010d331fSAl Viro 1214010d331fSAl Viro if (ia_valid & ATTR_SIZE && attr->ia_size != inode->i_size) { 1215010d331fSAl Viro error = ufs_truncate(inode, attr->ia_size); 1216010d331fSAl Viro if (error) 1217010d331fSAl Viro return error; 1218010d331fSAl Viro } 1219010d331fSAl Viro 1220010d331fSAl Viro setattr_copy(inode, attr); 1221010d331fSAl Viro mark_inode_dirty(inode); 1222010d331fSAl Viro return 0; 1223010d331fSAl Viro } 1224010d331fSAl Viro 1225010d331fSAl Viro const struct inode_operations ufs_file_inode_operations = { 1226010d331fSAl Viro .setattr = ufs_setattr, 1227010d331fSAl Viro }; 1228