[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/fs/ufs/inode.c b/ap/os/linux/linux-3.4.x/fs/ufs/inode.c
new file mode 100644
index 0000000..7cdd395
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/fs/ufs/inode.c
@@ -0,0 +1,905 @@
+/*
+ * 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 <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/time.h>
+#include <linux/stat.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/buffer_head.h>
+#include <linux/writeback.h>
+
+#include "ufs_fs.h"
+#include "ufs.h"
+#include "swab.h"
+#include "util.h"
+
+static u64 ufs_frag_map(struct inode *inode, sector_t frag, bool needs_lock);
+
+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 < 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 beginning of the filesystem.
+ */
+
+static u64 ufs_frag_map(struct inode *inode, sector_t frag, bool needs_lock)
+{
+ 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,
+ (unsigned long long)mask);
+
+ if (depth == 0)
+ return 0;
+
+ p = offsets;
+
+ if (needs_lock)
+ lock_ufs(sb);
+ 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:
+ if (needs_lock)
+ unlock_ufs(sb);
+ return ret;
+}
+
+/**
+ * ufs_inode_getfrag() - allocate new fragment(s)
+ * @inode - pointer to inode
+ * @fragment - number of `fragment' which hold pointer
+ * to new allocated fragment(s)
+ * @new_fragment - number of new allocated fragment(s)
+ * @required - how many fragment(s) we require
+ * @err - we set it if something wrong
+ * @phys - pointer to where we save physical number of new allocated fragments,
+ * NULL if we allocate not data(indirect blocks for example).
+ * @new - we set it if we allocate new block
+ * @locked_page - for ufs_new_fragments()
+ */
+static struct buffer_head *
+ufs_inode_getfrag(struct inode *inode, u64 fragment,
+ sector_t new_fragment, unsigned int required, int *err,
+ long *phys, int *new, struct page *locked_page)
+{
+ 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;
+ struct buffer_head * result;
+ unsigned blockoff, lastblockoff;
+ u64 tmp, goal, lastfrag, block, lastblock;
+ void *p, *p2;
+
+ UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, required %u, "
+ "metadata %d\n", inode->i_ino, (unsigned long long)fragment,
+ (unsigned long long)new_fragment, required, !phys);
+
+ /* 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 = ufs_get_direct_data_ptr(uspi, ufsi, block);
+
+ goal = 0;
+
+repeat:
+ tmp = ufs_data_ptr_to_cpu(sb, p);
+
+ lastfrag = ufsi->i_lastfrag;
+ if (tmp && fragment < lastfrag) {
+ if (!phys) {
+ result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
+ if (tmp == ufs_data_ptr_to_cpu(sb, p)) {
+ UFSD("EXIT, result %llu\n",
+ (unsigned long long)tmp + blockoff);
+ return result;
+ }
+ brelse (result);
+ goto repeat;
+ } else {
+ *phys = uspi->s_sbbase + 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 = ufs_get_direct_data_ptr(uspi, ufsi, lastblock);
+ tmp = ufs_new_fragments(inode, p2, lastfrag,
+ ufs_data_ptr_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;
+
+ }
+ tmp = ufs_data_ptr_to_cpu(sb,
+ ufs_get_direct_data_ptr(uspi, ufsi,
+ lastblock));
+ if (tmp)
+ goal = tmp + uspi->s_fpb;
+ tmp = ufs_new_fragments (inode, p, fragment - blockoff,
+ goal, required + blockoff,
+ err,
+ phys != NULL ? locked_page : NULL);
+ } else if (lastblock == block) {
+ /*
+ * We will extend last allocated block
+ */
+ tmp = ufs_new_fragments(inode, p, fragment -
+ (blockoff - lastblockoff),
+ ufs_data_ptr_to_cpu(sb, p),
+ required + (blockoff - lastblockoff),
+ err, phys != NULL ? locked_page : NULL);
+ } else /* (lastblock > block) */ {
+ /*
+ * We will allocate new block before last allocated block
+ */
+ if (block) {
+ tmp = ufs_data_ptr_to_cpu(sb,
+ ufs_get_direct_data_ptr(uspi, ufsi, block - 1));
+ if (tmp)
+ goal = tmp + uspi->s_fpb;
+ }
+ tmp = ufs_new_fragments(inode, p, fragment - blockoff,
+ goal, uspi->s_fpb, err,
+ phys != NULL ? locked_page : NULL);
+ }
+ if (!tmp) {
+ if ((!blockoff && ufs_data_ptr_to_cpu(sb, p)) ||
+ (blockoff && lastfrag != ufsi->i_lastfrag))
+ goto repeat;
+ *err = -ENOSPC;
+ return NULL;
+ }
+
+ if (!phys) {
+ result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
+ } else {
+ *phys = uspi->s_sbbase + 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 %llu\n", (unsigned long long)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;
+
+ */
+}
+
+/**
+ * ufs_inode_getblock() - allocate new block
+ * @inode - pointer to inode
+ * @bh - pointer to block which hold "pointer" to new allocated block
+ * @fragment - number of `fragment' which hold pointer
+ * to new allocated block
+ * @new_fragment - number of new allocated fragment
+ * (block will hold this fragment and also uspi->s_fpb-1)
+ * @err - see ufs_inode_getfrag()
+ * @phys - see ufs_inode_getfrag()
+ * @new - see ufs_inode_getfrag()
+ * @locked_page - see ufs_inode_getfrag()
+ */
+static struct buffer_head *
+ufs_inode_getblock(struct inode *inode, struct buffer_head *bh,
+ u64 fragment, sector_t new_fragment, int *err,
+ long *phys, int *new, struct page *locked_page)
+{
+ struct super_block *sb = inode->i_sb;
+ struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
+ struct buffer_head * result;
+ unsigned blockoff;
+ u64 tmp, goal, block;
+ void *p;
+
+ block = ufs_fragstoblks (fragment);
+ blockoff = ufs_fragnum (fragment);
+
+ UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, metadata %d\n",
+ inode->i_ino, (unsigned long long)fragment,
+ (unsigned long long)new_fragment, !phys);
+
+ 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;
+ }
+ if (uspi->fs_magic == UFS2_MAGIC)
+ p = (__fs64 *)bh->b_data + block;
+ else
+ p = (__fs32 *)bh->b_data + block;
+repeat:
+ tmp = ufs_data_ptr_to_cpu(sb, p);
+ if (tmp) {
+ if (!phys) {
+ result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
+ if (tmp == ufs_data_ptr_to_cpu(sb, p))
+ goto out;
+ brelse (result);
+ goto repeat;
+ } else {
+ *phys = uspi->s_sbbase + tmp + blockoff;
+ goto out;
+ }
+ }
+
+ if (block && (uspi->fs_magic == UFS2_MAGIC ?
+ (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[block-1])) :
+ (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[block-1]))))
+ 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 (ufs_data_ptr_to_cpu(sb, p))
+ goto repeat;
+ goto out;
+ }
+
+
+ if (!phys) {
+ result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
+ } else {
+ *phys = uspi->s_sbbase + 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 %llu\n", (unsigned long long)tmp + blockoff);
+out:
+ brelse (bh);
+ UFSD("EXIT\n");
+ return result;
+}
+
+/**
+ * ufs_getfrag_block() - `get_block_t' function, interface between UFS and
+ * readpage, writepage and so on
+ */
+
+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_info * sbi = UFS_SB(sb);
+ struct ufs_sb_private_info * uspi = sbi->s_uspi;
+ struct buffer_head * bh;
+ int ret, err, new;
+ unsigned long ptr,phys;
+ u64 phys64 = 0;
+ bool needs_lock = (sbi->mutex_owner != current);
+
+ if (!create) {
+ phys64 = ufs_frag_map(inode, fragment, needs_lock);
+ UFSD("phys64 = %llu\n", (unsigned long long)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;
+
+ if (needs_lock)
+ lock_ufs(sb);
+
+ UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment);
+ 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, &phys, &new,\
+ bh_result->b_page)
+#define GET_INODE_PTR(x) \
+ ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL,\
+ bh_result->b_page)
+#define GET_INDIRECT_DATABLOCK(x) \
+ ufs_inode_getblock(inode, bh, x, fragment, \
+ &err, &phys, &new, bh_result->b_page)
+#define GET_INDIRECT_PTR(x) \
+ ufs_inode_getblock(inode, bh, x, fragment, \
+ &err, NULL, 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:
+ if (needs_lock)
+ unlock_ufs(sb);
+
+ return err;
+
+abort_too_big:
+ ufs_warning(sb, "ufs_get_block", "block > big");
+ goto abort;
+}
+
+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);
+}
+
+int ufs_prepare_chunk(struct page *page, loff_t pos, unsigned len)
+{
+ return __block_write_begin(page, pos, len, ufs_getfrag_block);
+}
+
+static int ufs_write_begin(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata)
+{
+ int ret;
+
+ ret = block_write_begin(mapping, pos, len, flags, pagep,
+ ufs_getfrag_block);
+ if (unlikely(ret)) {
+ loff_t isize = mapping->host->i_size;
+ if (pos + len > isize)
+ vmtruncate(mapping->host, isize);
+ }
+
+ return ret;
+}
+
+static sector_t ufs_bmap(struct address_space *mapping, sector_t block)
+{
+ return generic_block_bmap(mapping,block,ufs_getfrag_block);
+}
+
+const struct address_space_operations ufs_aops = {
+ .readpage = ufs_readpage,
+ .writepage = ufs_writepage,
+ .write_begin = ufs_write_begin,
+ .write_end = generic_write_end,
+ .bmap = ufs_bmap
+};
+
+static void ufs_set_inode_ops(struct inode *inode)
+{
+ 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;
+ inode->i_mapping->a_ops = &ufs_aops;
+ } else if (S_ISLNK(inode->i_mode)) {
+ if (!inode->i_blocks)
+ inode->i_op = &ufs_fast_symlink_inode_operations;
+ else {
+ inode->i_op = &ufs_symlink_inode_operations;
+ inode->i_mapping->a_ops = &ufs_aops;
+ }
+ } else
+ init_special_inode(inode, inode->i_mode,
+ ufs_get_inode_dev(inode->i_sb, UFS_I(inode)));
+}
+
+static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode)
+{
+ struct ufs_inode_info *ufsi = UFS_I(inode);
+ struct super_block *sb = inode->i_sb;
+ umode_t mode;
+
+ /*
+ * Copy data to the in-core inode.
+ */
+ inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode);
+ set_nlink(inode, 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);
+ return -1;
+ }
+
+ /*
+ * 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_generation = fs32_to_cpu(sb, ufs_inode->ui_gen);
+ ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags);
+ 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);
+
+
+ if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
+ memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr,
+ sizeof(ufs_inode->ui_u2.ui_addr));
+ } else {
+ memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink,
+ sizeof(ufs_inode->ui_u2.ui_symlink) - 1);
+ ufsi->i_u1.i_symlink[sizeof(ufs_inode->ui_u2.ui_symlink) - 1] = 0;
+ }
+ return 0;
+}
+
+static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode)
+{
+ struct ufs_inode_info *ufsi = UFS_I(inode);
+ struct super_block *sb = inode->i_sb;
+ umode_t mode;
+
+ UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino);
+ /*
+ * Copy data to the in-core inode.
+ */
+ inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode);
+ set_nlink(inode, 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);
+ return -1;
+ }
+
+ /*
+ * 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 = fs64_to_cpu(sb, ufs2_inode->ui_atime);
+ inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime);
+ inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime);
+ inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec);
+ inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec);
+ inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec);
+ inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks);
+ inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen);
+ ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags);
+ /*
+ 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);
+ */
+
+ if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
+ memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr,
+ sizeof(ufs2_inode->ui_u2.ui_addr));
+ } else {
+ memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink,
+ sizeof(ufs2_inode->ui_u2.ui_symlink) - 1);
+ ufsi->i_u1.i_symlink[sizeof(ufs2_inode->ui_u2.ui_symlink) - 1] = 0;
+ }
+ return 0;
+}
+
+struct inode *ufs_iget(struct super_block *sb, unsigned long ino)
+{
+ struct ufs_inode_info *ufsi;
+ struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
+ struct buffer_head * bh;
+ struct inode *inode;
+ int err;
+
+ UFSD("ENTER, ino %lu\n", ino);
+
+ if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) {
+ ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n",
+ ino);
+ return ERR_PTR(-EIO);
+ }
+
+ inode = iget_locked(sb, ino);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+ if (!(inode->i_state & I_NEW))
+ return inode;
+
+ ufsi = UFS_I(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 ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
+ struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data;
+
+ err = ufs2_read_inode(inode,
+ ufs2_inode + ufs_inotofsbo(inode->i_ino));
+ } else {
+ struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data;
+
+ err = ufs1_read_inode(inode,
+ ufs_inode + ufs_inotofsbo(inode->i_ino));
+ }
+
+ if (err)
+ goto bad_inode;
+ inode->i_version++;
+ ufsi->i_lastfrag =
+ (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift;
+ ufsi->i_dir_start_lookup = 0;
+ ufsi->i_osync = 0;
+
+ ufs_set_inode_ops(inode);
+
+ brelse(bh);
+
+ UFSD("EXIT\n");
+ unlock_new_inode(inode);
+ return inode;
+
+bad_inode:
+ iget_failed(inode);
+ return ERR_PTR(-EIO);
+}
+
+static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode)
+{
+ struct super_block *sb = inode->i_sb;
+ struct ufs_inode_info *ufsi = UFS_I(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, inode->i_generation);
+
+ if ((UFS_SB(sb)->s_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) {
+ memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data,
+ sizeof(ufs_inode->ui_u2.ui_addr));
+ }
+ else {
+ memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink,
+ sizeof(ufs_inode->ui_u2.ui_symlink));
+ }
+
+ if (!inode->i_nlink)
+ memset (ufs_inode, 0, sizeof(struct ufs_inode));
+}
+
+static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode)
+{
+ struct super_block *sb = inode->i_sb;
+ struct ufs_inode_info *ufsi = UFS_I(inode);
+
+ UFSD("ENTER\n");
+ ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode);
+ ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink);
+
+ ufs_inode->ui_uid = cpu_to_fs32(sb, inode->i_uid);
+ ufs_inode->ui_gid = cpu_to_fs32(sb, inode->i_gid);
+
+ ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
+ ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec);
+ ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec);
+ ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec);
+ ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec);
+ ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec);
+ ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec);
+
+ ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks);
+ ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags);
+ ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation);
+
+ 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.u2_i_data[0];
+ } else if (inode->i_blocks) {
+ memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data,
+ sizeof(ufs_inode->ui_u2.ui_addr));
+ } else {
+ memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink,
+ sizeof(ufs_inode->ui_u2.ui_symlink));
+ }
+
+ if (!inode->i_nlink)
+ memset (ufs_inode, 0, sizeof(struct ufs2_inode));
+ UFSD("EXIT\n");
+}
+
+static int ufs_update_inode(struct inode * inode, int do_sync)
+{
+ struct super_block *sb = inode->i_sb;
+ struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
+ struct buffer_head * bh;
+
+ UFSD("ENTER, ino %lu\n", inode->i_ino);
+
+ 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;
+ }
+ if (uspi->fs_magic == UFS2_MAGIC) {
+ struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data;
+
+ ufs2_update_inode(inode,
+ ufs2_inode + ufs_inotofsbo(inode->i_ino));
+ } else {
+ struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data;
+
+ ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino));
+ }
+
+ 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, struct writeback_control *wbc)
+{
+ int ret;
+ lock_ufs(inode->i_sb);
+ ret = ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
+ unlock_ufs(inode->i_sb);
+ return ret;
+}
+
+int ufs_sync_inode (struct inode *inode)
+{
+ return ufs_update_inode (inode, 1);
+}
+
+void ufs_evict_inode(struct inode * inode)
+{
+ int want_delete = 0;
+
+ if (!inode->i_nlink && !is_bad_inode(inode))
+ want_delete = 1;
+
+ truncate_inode_pages(&inode->i_data, 0);
+ if (want_delete) {
+ loff_t old_i_size;
+ /*UFS_I(inode)->i_dtime = CURRENT_TIME;*/
+ lock_ufs(inode->i_sb);
+ mark_inode_dirty(inode);
+ ufs_update_inode(inode, IS_SYNC(inode));
+ old_i_size = inode->i_size;
+ inode->i_size = 0;
+ if (inode->i_blocks && ufs_truncate(inode, old_i_size))
+ ufs_warning(inode->i_sb, __func__, "ufs_truncate failed\n");
+ unlock_ufs(inode->i_sb);
+ }
+
+ invalidate_inode_buffers(inode);
+ end_writeback(inode);
+
+ if (want_delete) {
+ lock_ufs(inode->i_sb);
+ ufs_free_inode (inode);
+ unlock_ufs(inode->i_sb);
+ }
+}