| /* |
| * linux/fs/ufs/inode.c |
| * |
| * Copyright (C) 1998 |
| * Daniel Pirkl <daniel.pirkl@email.cz> |
| * Charles University, Faculty of Mathematics and Physics |
| * |
| * from |
| * |
| * linux/fs/ext2/inode.c |
| * |
| * Copyright (C) 1992, 1993, 1994, 1995 |
| * Remy Card (card@masi.ibp.fr) |
| * Laboratoire MASI - Institut Blaise Pascal |
| * Universite Pierre et Marie Curie (Paris VI) |
| * |
| * from |
| * |
| * linux/fs/minix/inode.c |
| * |
| * Copyright (C) 1991, 1992 Linus Torvalds |
| * |
| * Goal-directed block allocation by Stephen Tweedie (sct@dcs.ed.ac.uk), 1993 |
| * Big-endian to little-endian byte-swapping/bitmaps by |
| * David S. Miller (davem@caip.rutgers.edu), 1995 |
| */ |
| |
| #include <asm/uaccess.h> |
| #include <asm/system.h> |
| |
| #include <linux/errno.h> |
| #include <linux/fs.h> |
| #include <linux/ufs_fs.h> |
| #include <linux/time.h> |
| #include <linux/stat.h> |
| #include <linux/string.h> |
| #include <linux/mm.h> |
| #include <linux/smp_lock.h> |
| #include <linux/buffer_head.h> |
| |
| #include "swab.h" |
| #include "util.h" |
| |
| #undef UFS_INODE_DEBUG |
| #undef UFS_INODE_DEBUG_MORE |
| |
| #ifdef UFS_INODE_DEBUG |
| #define UFSD(x) printk("(%s, %d), %s: ", __FILE__, __LINE__, __FUNCTION__); printk x; |
| #else |
| #define UFSD(x) |
| #endif |
| |
| static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t offsets[4]) |
| { |
| struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi; |
| int ptrs = uspi->s_apb; |
| int ptrs_bits = uspi->s_apbshift; |
| const long direct_blocks = UFS_NDADDR, |
| indirect_blocks = ptrs, |
| double_blocks = (1 << (ptrs_bits * 2)); |
| int n = 0; |
| |
| |
| UFSD(("ptrs=uspi->s_apb = %d,double_blocks=%ld \n",ptrs,double_blocks)); |
| if (i_block < 0) { |
| ufs_warning(inode->i_sb, "ufs_block_to_path", "block < 0"); |
| } else if (i_block < direct_blocks) { |
| offsets[n++] = i_block; |
| } else if ((i_block -= direct_blocks) < indirect_blocks) { |
| offsets[n++] = UFS_IND_BLOCK; |
| offsets[n++] = i_block; |
| } else if ((i_block -= indirect_blocks) < double_blocks) { |
| offsets[n++] = UFS_DIND_BLOCK; |
| offsets[n++] = i_block >> ptrs_bits; |
| offsets[n++] = i_block & (ptrs - 1); |
| } else if (((i_block -= double_blocks) >> (ptrs_bits * 2)) < ptrs) { |
| offsets[n++] = UFS_TIND_BLOCK; |
| offsets[n++] = i_block >> (ptrs_bits * 2); |
| offsets[n++] = (i_block >> ptrs_bits) & (ptrs - 1); |
| offsets[n++] = i_block & (ptrs - 1); |
| } else { |
| ufs_warning(inode->i_sb, "ufs_block_to_path", "block > big"); |
| } |
| return n; |
| } |
| |
| /* |
| * Returns the location of the fragment from |
| * the begining of the filesystem. |
| */ |
| |
| u64 ufs_frag_map(struct inode *inode, sector_t frag) |
| { |
| struct ufs_inode_info *ufsi = UFS_I(inode); |
| struct super_block *sb = inode->i_sb; |
| struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
| u64 mask = (u64) uspi->s_apbmask>>uspi->s_fpbshift; |
| int shift = uspi->s_apbshift-uspi->s_fpbshift; |
| sector_t offsets[4], *p; |
| int depth = ufs_block_to_path(inode, frag >> uspi->s_fpbshift, offsets); |
| u64 ret = 0L; |
| __fs32 block; |
| __fs64 u2_block = 0L; |
| unsigned flags = UFS_SB(sb)->s_flags; |
| u64 temp = 0L; |
| |
| UFSD((": frag = %llu depth = %d\n", (unsigned long long)frag, depth)); |
| UFSD((": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n",uspi->s_fpbshift,uspi->s_apbmask,mask)); |
| |
| if (depth == 0) |
| return 0; |
| |
| p = offsets; |
| |
| lock_kernel(); |
| if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
| goto ufs2; |
| |
| block = ufsi->i_u1.i_data[*p++]; |
| if (!block) |
| goto out; |
| while (--depth) { |
| struct buffer_head *bh; |
| sector_t n = *p++; |
| |
| bh = sb_bread(sb, uspi->s_sbbase + fs32_to_cpu(sb, block)+(n>>shift)); |
| if (!bh) |
| goto out; |
| block = ((__fs32 *) bh->b_data)[n & mask]; |
| brelse (bh); |
| if (!block) |
| goto out; |
| } |
| ret = (u64) (uspi->s_sbbase + fs32_to_cpu(sb, block) + (frag & uspi->s_fpbmask)); |
| goto out; |
| ufs2: |
| u2_block = ufsi->i_u1.u2_i_data[*p++]; |
| if (!u2_block) |
| goto out; |
| |
| |
| while (--depth) { |
| struct buffer_head *bh; |
| sector_t n = *p++; |
| |
| |
| temp = (u64)(uspi->s_sbbase) + fs64_to_cpu(sb, u2_block); |
| bh = sb_bread(sb, temp +(u64) (n>>shift)); |
| if (!bh) |
| goto out; |
| u2_block = ((__fs64 *)bh->b_data)[n & mask]; |
| brelse(bh); |
| if (!u2_block) |
| goto out; |
| } |
| temp = (u64)uspi->s_sbbase + fs64_to_cpu(sb, u2_block); |
| ret = temp + (u64) (frag & uspi->s_fpbmask); |
| |
| out: |
| unlock_kernel(); |
| return ret; |
| } |
| |
| static void ufs_clear_block(struct inode *inode, struct buffer_head *bh) |
| { |
| lock_buffer(bh); |
| memset(bh->b_data, 0, inode->i_sb->s_blocksize); |
| set_buffer_uptodate(bh); |
| mark_buffer_dirty(bh); |
| unlock_buffer(bh); |
| if (IS_SYNC(inode)) |
| sync_dirty_buffer(bh); |
| } |
| |
| static struct buffer_head *ufs_inode_getfrag(struct inode *inode, |
| unsigned int fragment, unsigned int new_fragment, |
| unsigned int required, int *err, int metadata, |
| long *phys, int *new, struct page *locked_page) |
| { |
| struct ufs_inode_info *ufsi = UFS_I(inode); |
| struct super_block * sb; |
| struct ufs_sb_private_info * uspi; |
| struct buffer_head * result; |
| unsigned block, blockoff, lastfrag, lastblock, lastblockoff; |
| unsigned tmp, goal; |
| __fs32 * p, * p2; |
| unsigned flags = 0; |
| |
| UFSD(("ENTER, ino %lu, fragment %u, new_fragment %u, required %u\n", |
| inode->i_ino, fragment, new_fragment, required)) |
| |
| sb = inode->i_sb; |
| uspi = UFS_SB(sb)->s_uspi; |
| |
| flags = UFS_SB(sb)->s_flags; |
| /* TODO : to be done for write support |
| if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
| goto ufs2; |
| */ |
| |
| block = ufs_fragstoblks (fragment); |
| blockoff = ufs_fragnum (fragment); |
| p = ufsi->i_u1.i_data + block; |
| goal = 0; |
| |
| repeat: |
| tmp = fs32_to_cpu(sb, *p); |
| lastfrag = ufsi->i_lastfrag; |
| if (tmp && fragment < lastfrag) { |
| if (metadata) { |
| result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); |
| if (tmp == fs32_to_cpu(sb, *p)) { |
| UFSD(("EXIT, result %u\n", tmp + blockoff)) |
| return result; |
| } |
| brelse (result); |
| goto repeat; |
| } else { |
| *phys = tmp + blockoff; |
| return NULL; |
| } |
| } |
| |
| lastblock = ufs_fragstoblks (lastfrag); |
| lastblockoff = ufs_fragnum (lastfrag); |
| /* |
| * We will extend file into new block beyond last allocated block |
| */ |
| if (lastblock < block) { |
| /* |
| * We must reallocate last allocated block |
| */ |
| if (lastblockoff) { |
| p2 = ufsi->i_u1.i_data + lastblock; |
| tmp = ufs_new_fragments (inode, p2, lastfrag, |
| fs32_to_cpu(sb, *p2), uspi->s_fpb - lastblockoff, |
| err, locked_page); |
| if (!tmp) { |
| if (lastfrag != ufsi->i_lastfrag) |
| goto repeat; |
| else |
| return NULL; |
| } |
| lastfrag = ufsi->i_lastfrag; |
| |
| } |
| goal = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock]) + uspi->s_fpb; |
| tmp = ufs_new_fragments (inode, p, fragment - blockoff, |
| goal, required + blockoff, |
| err, locked_page); |
| } |
| /* |
| * We will extend last allocated block |
| */ |
| else if (lastblock == block) { |
| tmp = ufs_new_fragments(inode, p, fragment - (blockoff - lastblockoff), |
| fs32_to_cpu(sb, *p), required + (blockoff - lastblockoff), |
| err, locked_page); |
| } |
| /* |
| * We will allocate new block before last allocated block |
| */ |
| else /* (lastblock > block) */ { |
| if (lastblock && (tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock-1]))) |
| goal = tmp + uspi->s_fpb; |
| tmp = ufs_new_fragments(inode, p, fragment - blockoff, |
| goal, uspi->s_fpb, err, locked_page); |
| } |
| if (!tmp) { |
| if ((!blockoff && *p) || |
| (blockoff && lastfrag != ufsi->i_lastfrag)) |
| goto repeat; |
| *err = -ENOSPC; |
| return NULL; |
| } |
| |
| if (metadata) { |
| result = sb_getblk(inode->i_sb, tmp + blockoff); |
| ufs_clear_block(inode, result); |
| } else { |
| *phys = tmp + blockoff; |
| result = NULL; |
| *err = 0; |
| *new = 1; |
| } |
| |
| inode->i_ctime = CURRENT_TIME_SEC; |
| if (IS_SYNC(inode)) |
| ufs_sync_inode (inode); |
| mark_inode_dirty(inode); |
| UFSD(("EXIT, result %u\n", tmp + blockoff)) |
| return result; |
| |
| /* This part : To be implemented .... |
| Required only for writing, not required for READ-ONLY. |
| ufs2: |
| |
| u2_block = ufs_fragstoblks(fragment); |
| u2_blockoff = ufs_fragnum(fragment); |
| p = ufsi->i_u1.u2_i_data + block; |
| goal = 0; |
| |
| repeat2: |
| tmp = fs32_to_cpu(sb, *p); |
| lastfrag = ufsi->i_lastfrag; |
| |
| */ |
| } |
| |
| static struct buffer_head *ufs_block_getfrag(struct inode *inode, struct buffer_head *bh, |
| unsigned int fragment, unsigned int new_fragment, |
| unsigned int blocksize, int * err, int metadata, |
| long *phys, int *new, struct page *locked_page) |
| { |
| struct super_block * sb; |
| struct ufs_sb_private_info * uspi; |
| struct buffer_head * result; |
| unsigned tmp, goal, block, blockoff; |
| __fs32 * p; |
| |
| sb = inode->i_sb; |
| uspi = UFS_SB(sb)->s_uspi; |
| block = ufs_fragstoblks (fragment); |
| blockoff = ufs_fragnum (fragment); |
| |
| UFSD(("ENTER, ino %lu, fragment %u, new_fragment %u\n", inode->i_ino, fragment, new_fragment)) |
| |
| result = NULL; |
| if (!bh) |
| goto out; |
| if (!buffer_uptodate(bh)) { |
| ll_rw_block (READ, 1, &bh); |
| wait_on_buffer (bh); |
| if (!buffer_uptodate(bh)) |
| goto out; |
| } |
| |
| p = (__fs32 *) bh->b_data + block; |
| repeat: |
| tmp = fs32_to_cpu(sb, *p); |
| if (tmp) { |
| if (metadata) { |
| result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); |
| if (tmp == fs32_to_cpu(sb, *p)) |
| goto out; |
| brelse (result); |
| goto repeat; |
| } else { |
| *phys = tmp + blockoff; |
| goto out; |
| } |
| } |
| |
| if (block && (tmp = fs32_to_cpu(sb, ((__fs32*)bh->b_data)[block-1]) + uspi->s_fpb)) |
| goal = tmp + uspi->s_fpb; |
| else |
| goal = bh->b_blocknr + uspi->s_fpb; |
| tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal, |
| uspi->s_fpb, err, locked_page); |
| if (!tmp) { |
| if (fs32_to_cpu(sb, *p)) |
| goto repeat; |
| goto out; |
| } |
| |
| |
| if (metadata) { |
| result = sb_getblk(sb, tmp + blockoff); |
| ufs_clear_block(inode, result); |
| } else { |
| *phys = tmp + blockoff; |
| *new = 1; |
| } |
| |
| mark_buffer_dirty(bh); |
| if (IS_SYNC(inode)) |
| sync_dirty_buffer(bh); |
| inode->i_ctime = CURRENT_TIME_SEC; |
| mark_inode_dirty(inode); |
| UFSD(("result %u\n", tmp + blockoff)); |
| out: |
| brelse (bh); |
| UFSD(("EXIT\n")); |
| return result; |
| } |
| |
| /* |
| * This function gets the block which contains the fragment. |
| */ |
| |
| int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create) |
| { |
| struct super_block * sb = inode->i_sb; |
| struct ufs_sb_private_info * uspi = UFS_SB(sb)->s_uspi; |
| struct buffer_head * bh; |
| int ret, err, new; |
| unsigned long ptr,phys; |
| u64 phys64 = 0; |
| |
| if (!create) { |
| phys64 = ufs_frag_map(inode, fragment); |
| UFSD(("phys64 = %llu \n",phys64)); |
| if (phys64) |
| map_bh(bh_result, sb, phys64); |
| return 0; |
| } |
| |
| /* This code entered only while writing ....? */ |
| |
| err = -EIO; |
| new = 0; |
| ret = 0; |
| bh = NULL; |
| |
| lock_kernel(); |
| |
| UFSD(("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment)) |
| if (fragment < 0) |
| goto abort_negative; |
| if (fragment > |
| ((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb) |
| << uspi->s_fpbshift)) |
| goto abort_too_big; |
| |
| err = 0; |
| ptr = fragment; |
| |
| /* |
| * ok, these macros clean the logic up a bit and make |
| * it much more readable: |
| */ |
| #define GET_INODE_DATABLOCK(x) \ |
| ufs_inode_getfrag(inode, x, fragment, 1, &err, 0, &phys, &new, bh_result->b_page) |
| #define GET_INODE_PTR(x) \ |
| ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, 1, NULL, NULL, bh_result->b_page) |
| #define GET_INDIRECT_DATABLOCK(x) \ |
| ufs_block_getfrag(inode, bh, x, fragment, sb->s_blocksize, \ |
| &err, 0, &phys, &new, bh_result->b_page); |
| #define GET_INDIRECT_PTR(x) \ |
| ufs_block_getfrag(inode, bh, x, fragment, sb->s_blocksize, \ |
| &err, 1, NULL, NULL, bh_result->b_page); |
| |
| if (ptr < UFS_NDIR_FRAGMENT) { |
| bh = GET_INODE_DATABLOCK(ptr); |
| goto out; |
| } |
| ptr -= UFS_NDIR_FRAGMENT; |
| if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) { |
| bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift)); |
| goto get_indirect; |
| } |
| ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift); |
| if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) { |
| bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift)); |
| goto get_double; |
| } |
| ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift); |
| bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift)); |
| bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask); |
| get_double: |
| bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask); |
| get_indirect: |
| bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask); |
| |
| #undef GET_INODE_DATABLOCK |
| #undef GET_INODE_PTR |
| #undef GET_INDIRECT_DATABLOCK |
| #undef GET_INDIRECT_PTR |
| |
| out: |
| if (err) |
| goto abort; |
| if (new) |
| set_buffer_new(bh_result); |
| map_bh(bh_result, sb, phys); |
| abort: |
| unlock_kernel(); |
| return err; |
| |
| abort_negative: |
| ufs_warning(sb, "ufs_get_block", "block < 0"); |
| goto abort; |
| |
| abort_too_big: |
| ufs_warning(sb, "ufs_get_block", "block > big"); |
| goto abort; |
| } |
| |
| struct buffer_head *ufs_getfrag(struct inode *inode, unsigned int fragment, |
| int create, int *err) |
| { |
| struct buffer_head dummy; |
| int error; |
| |
| dummy.b_state = 0; |
| dummy.b_blocknr = -1000; |
| error = ufs_getfrag_block(inode, fragment, &dummy, create); |
| *err = error; |
| if (!error && buffer_mapped(&dummy)) { |
| struct buffer_head *bh; |
| bh = sb_getblk(inode->i_sb, dummy.b_blocknr); |
| if (buffer_new(&dummy)) { |
| memset(bh->b_data, 0, inode->i_sb->s_blocksize); |
| set_buffer_uptodate(bh); |
| mark_buffer_dirty(bh); |
| } |
| return bh; |
| } |
| return NULL; |
| } |
| |
| struct buffer_head * ufs_bread (struct inode * inode, unsigned fragment, |
| int create, int * err) |
| { |
| struct buffer_head * bh; |
| |
| UFSD(("ENTER, ino %lu, fragment %u\n", inode->i_ino, fragment)) |
| bh = ufs_getfrag (inode, fragment, create, err); |
| if (!bh || buffer_uptodate(bh)) |
| return bh; |
| ll_rw_block (READ, 1, &bh); |
| wait_on_buffer (bh); |
| if (buffer_uptodate(bh)) |
| return bh; |
| brelse (bh); |
| *err = -EIO; |
| return NULL; |
| } |
| |
| static int ufs_writepage(struct page *page, struct writeback_control *wbc) |
| { |
| return block_write_full_page(page,ufs_getfrag_block,wbc); |
| } |
| static int ufs_readpage(struct file *file, struct page *page) |
| { |
| return block_read_full_page(page,ufs_getfrag_block); |
| } |
| static int ufs_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to) |
| { |
| return block_prepare_write(page,from,to,ufs_getfrag_block); |
| } |
| static sector_t ufs_bmap(struct address_space *mapping, sector_t block) |
| { |
| return generic_block_bmap(mapping,block,ufs_getfrag_block); |
| } |
| struct address_space_operations ufs_aops = { |
| .readpage = ufs_readpage, |
| .writepage = ufs_writepage, |
| .sync_page = block_sync_page, |
| .prepare_write = ufs_prepare_write, |
| .commit_write = generic_commit_write, |
| .bmap = ufs_bmap |
| }; |
| |
| void ufs_read_inode (struct inode * inode) |
| { |
| struct ufs_inode_info *ufsi = UFS_I(inode); |
| struct super_block * sb; |
| struct ufs_sb_private_info * uspi; |
| struct ufs_inode * ufs_inode; |
| struct ufs2_inode *ufs2_inode; |
| struct buffer_head * bh; |
| mode_t mode; |
| unsigned i; |
| unsigned flags; |
| |
| UFSD(("ENTER, ino %lu\n", inode->i_ino)) |
| |
| sb = inode->i_sb; |
| uspi = UFS_SB(sb)->s_uspi; |
| flags = UFS_SB(sb)->s_flags; |
| |
| if (inode->i_ino < UFS_ROOTINO || |
| inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { |
| ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); |
| goto bad_inode; |
| } |
| |
| bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino)); |
| if (!bh) { |
| ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); |
| goto bad_inode; |
| } |
| if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) |
| goto ufs2_inode; |
| |
| ufs_inode = (struct ufs_inode *) (bh->b_data + sizeof(struct ufs_inode) * ufs_inotofsbo(inode->i_ino)); |
| |
| /* |
| * Copy data to the in-core inode. |
| */ |
| inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode); |
| inode->i_nlink = fs16_to_cpu(sb, ufs_inode->ui_nlink); |
| if (inode->i_nlink == 0) |
| ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); |
| |
| /* |
| * Linux now has 32-bit uid and gid, so we can support EFT. |
| */ |
| inode->i_uid = ufs_get_inode_uid(sb, ufs_inode); |
| inode->i_gid = ufs_get_inode_gid(sb, ufs_inode); |
| |
| inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); |
| inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); |
| inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); |
| inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); |
| inode->i_mtime.tv_nsec = 0; |
| inode->i_atime.tv_nsec = 0; |
| inode->i_ctime.tv_nsec = 0; |
| inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); |
| inode->i_blksize = PAGE_SIZE; /* This is the optimal IO size (for stat) */ |
| inode->i_version++; |
| ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); |
| ufsi->i_gen = fs32_to_cpu(sb, ufs_inode->ui_gen); |
| ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); |
| ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); |
| ufsi->i_lastfrag = (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; |
| |
| if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { |
| for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) |
| ufsi->i_u1.i_data[i] = ufs_inode->ui_u2.ui_addr.ui_db[i]; |
| } |
| else { |
| for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) |
| ufsi->i_u1.i_symlink[i] = ufs_inode->ui_u2.ui_symlink[i]; |
| } |
| ufsi->i_osync = 0; |
| |
| if (S_ISREG(inode->i_mode)) { |
| inode->i_op = &ufs_file_inode_operations; |
| inode->i_fop = &ufs_file_operations; |
| inode->i_mapping->a_ops = &ufs_aops; |
| } else if (S_ISDIR(inode->i_mode)) { |
| inode->i_op = &ufs_dir_inode_operations; |
| inode->i_fop = &ufs_dir_operations; |
| } else if (S_ISLNK(inode->i_mode)) { |
| if (!inode->i_blocks) |
| inode->i_op = &ufs_fast_symlink_inode_operations; |
| else { |
| inode->i_op = &page_symlink_inode_operations; |
| inode->i_mapping->a_ops = &ufs_aops; |
| } |
| } else |
| init_special_inode(inode, inode->i_mode, |
| ufs_get_inode_dev(sb, ufsi)); |
| |
| brelse (bh); |
| |
| UFSD(("EXIT\n")) |
| return; |
| |
| bad_inode: |
| make_bad_inode(inode); |
| return; |
| |
| ufs2_inode : |
| UFSD(("Reading ufs2 inode, ino %lu\n", inode->i_ino)) |
| |
| ufs2_inode = (struct ufs2_inode *)(bh->b_data + sizeof(struct ufs2_inode) * ufs_inotofsbo(inode->i_ino)); |
| |
| /* |
| * Copy data to the in-core inode. |
| */ |
| inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode); |
| inode->i_nlink = fs16_to_cpu(sb, ufs2_inode->ui_nlink); |
| if (inode->i_nlink == 0) |
| ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); |
| |
| /* |
| * Linux now has 32-bit uid and gid, so we can support EFT. |
| */ |
| inode->i_uid = fs32_to_cpu(sb, ufs2_inode->ui_uid); |
| inode->i_gid = fs32_to_cpu(sb, ufs2_inode->ui_gid); |
| |
| inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size); |
| inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs2_inode->ui_atime.tv_sec); |
| inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs2_inode->ui_ctime.tv_sec); |
| inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs2_inode->ui_mtime.tv_sec); |
| inode->i_mtime.tv_nsec = 0; |
| inode->i_atime.tv_nsec = 0; |
| inode->i_ctime.tv_nsec = 0; |
| inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks); |
| inode->i_blksize = PAGE_SIZE; /*This is the optimal IO size(for stat)*/ |
| |
| inode->i_version++; |
| ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags); |
| ufsi->i_gen = fs32_to_cpu(sb, ufs2_inode->ui_gen); |
| /* |
| ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow); |
| ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag); |
| */ |
| ufsi->i_lastfrag= (inode->i_size + uspi->s_fsize- 1) >> uspi->s_fshift; |
| |
| if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) { |
| for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) |
| ufsi->i_u1.u2_i_data[i] = |
| ufs2_inode->ui_u2.ui_addr.ui_db[i]; |
| } |
| else { |
| for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) |
| ufsi->i_u1.i_symlink[i] = ufs2_inode->ui_u2.ui_symlink[i]; |
| } |
| ufsi->i_osync = 0; |
| |
| if (S_ISREG(inode->i_mode)) { |
| inode->i_op = &ufs_file_inode_operations; |
| inode->i_fop = &ufs_file_operations; |
| inode->i_mapping->a_ops = &ufs_aops; |
| } else if (S_ISDIR(inode->i_mode)) { |
| inode->i_op = &ufs_dir_inode_operations; |
| inode->i_fop = &ufs_dir_operations; |
| } else if (S_ISLNK(inode->i_mode)) { |
| if (!inode->i_blocks) |
| inode->i_op = &ufs_fast_symlink_inode_operations; |
| else { |
| inode->i_op = &page_symlink_inode_operations; |
| inode->i_mapping->a_ops = &ufs_aops; |
| } |
| } else /* TODO : here ...*/ |
| init_special_inode(inode, inode->i_mode, |
| ufs_get_inode_dev(sb, ufsi)); |
| |
| brelse(bh); |
| |
| UFSD(("EXIT\n")) |
| return; |
| } |
| |
| static int ufs_update_inode(struct inode * inode, int do_sync) |
| { |
| struct ufs_inode_info *ufsi = UFS_I(inode); |
| struct super_block * sb; |
| struct ufs_sb_private_info * uspi; |
| struct buffer_head * bh; |
| struct ufs_inode * ufs_inode; |
| unsigned i; |
| unsigned flags; |
| |
| UFSD(("ENTER, ino %lu\n", inode->i_ino)) |
| |
| sb = inode->i_sb; |
| uspi = UFS_SB(sb)->s_uspi; |
| flags = UFS_SB(sb)->s_flags; |
| |
| if (inode->i_ino < UFS_ROOTINO || |
| inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) { |
| ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino); |
| return -1; |
| } |
| |
| bh = sb_bread(sb, ufs_inotofsba(inode->i_ino)); |
| if (!bh) { |
| ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino); |
| return -1; |
| } |
| ufs_inode = (struct ufs_inode *) (bh->b_data + ufs_inotofsbo(inode->i_ino) * sizeof(struct ufs_inode)); |
| |
| ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode); |
| ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink); |
| |
| ufs_set_inode_uid(sb, ufs_inode, inode->i_uid); |
| ufs_set_inode_gid(sb, ufs_inode, inode->i_gid); |
| |
| ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); |
| ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec); |
| ufs_inode->ui_atime.tv_usec = 0; |
| ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec); |
| ufs_inode->ui_ctime.tv_usec = 0; |
| ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec); |
| ufs_inode->ui_mtime.tv_usec = 0; |
| ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks); |
| ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags); |
| ufs_inode->ui_gen = cpu_to_fs32(sb, ufsi->i_gen); |
| |
| if ((flags & UFS_UID_MASK) == UFS_UID_EFT) { |
| ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow); |
| ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag); |
| } |
| |
| if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { |
| /* ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, inode->i_rdev); */ |
| ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0]; |
| } else if (inode->i_blocks) { |
| for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++) |
| ufs_inode->ui_u2.ui_addr.ui_db[i] = ufsi->i_u1.i_data[i]; |
| } |
| else { |
| for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++) |
| ufs_inode->ui_u2.ui_symlink[i] = ufsi->i_u1.i_symlink[i]; |
| } |
| |
| if (!inode->i_nlink) |
| memset (ufs_inode, 0, sizeof(struct ufs_inode)); |
| |
| mark_buffer_dirty(bh); |
| if (do_sync) |
| sync_dirty_buffer(bh); |
| brelse (bh); |
| |
| UFSD(("EXIT\n")) |
| return 0; |
| } |
| |
| int ufs_write_inode (struct inode * inode, int wait) |
| { |
| int ret; |
| lock_kernel(); |
| ret = ufs_update_inode (inode, wait); |
| unlock_kernel(); |
| return ret; |
| } |
| |
| int ufs_sync_inode (struct inode *inode) |
| { |
| return ufs_update_inode (inode, 1); |
| } |
| |
| void ufs_delete_inode (struct inode * inode) |
| { |
| truncate_inode_pages(&inode->i_data, 0); |
| /*UFS_I(inode)->i_dtime = CURRENT_TIME;*/ |
| lock_kernel(); |
| mark_inode_dirty(inode); |
| ufs_update_inode(inode, IS_SYNC(inode)); |
| inode->i_size = 0; |
| if (inode->i_blocks) |
| ufs_truncate (inode); |
| ufs_free_inode (inode); |
| unlock_kernel(); |
| } |