diff options
Diffstat (limited to 'fs/ufs/inode.c')
| -rw-r--r-- | fs/ufs/inode.c | 816 |
1 files changed, 816 insertions, 0 deletions
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c new file mode 100644 index 0000000..718627c --- /dev/null +++ b/fs/ufs/inode.c @@ -0,0 +1,816 @@ +/* + * 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=%d \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 = %lu depth = %d\n",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 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 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; + 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); + 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); + } + /* + * 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); + } + /* + * 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); + } + if (!tmp) { + if ((!blockoff && *p) || + (blockoff && lastfrag != ufsi->i_lastfrag)) + goto repeat; + *err = -ENOSPC; + return NULL; + } + + /* The nullification of framgents done in ufs/balloc.c is + * something I don't have the stomache to move into here right + * now. -DaveM + */ + if (metadata) { + result = sb_getblk(inode->i_sb, tmp + blockoff); + } else { + *phys = tmp; + 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 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; + 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); + if (!tmp) { + if (fs32_to_cpu(sb, *p)) + goto repeat; + goto out; + } + + /* The nullification of framgents done in ufs/balloc.c is + * something I don't have the stomache to move into here right + * now. -DaveM + */ + if (metadata) { + result = sb_getblk(sb, tmp + blockoff); + } else { + *phys = tmp; + *new = 1; + } + + mark_buffer_dirty(bh); + if (IS_SYNC(inode)) + sync_dirty_buffer(bh); + inode->i_ctime = CURRENT_TIME_SEC; + mark_inode_dirty(inode); +out: + brelse (bh); + UFSD(("EXIT, result %u\n", tmp + blockoff)) + return result; +} + +/* + * This function gets the block which contains the fragment. + */ + +static 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 = %lu \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 %u\n", inode->i_ino, 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) +#define GET_INODE_PTR(x) \ + ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, 1, NULL, NULL) +#define GET_INDIRECT_DATABLOCK(x) \ + ufs_block_getfrag(inode, bh, x, fragment, sb->s_blocksize, \ + &err, 0, &phys, &new); +#define GET_INDIRECT_PTR(x) \ + ufs_block_getfrag(inode, bh, x, fragment, sb->s_blocksize, \ + &err, 1, NULL, NULL); + + 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) +{ + /*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(); +} |
