]> git.karo-electronics.de Git - mv-sheeva.git/blobdiff - fs/hfsplus/inode.c
Merge tag 'v2.6.37' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[mv-sheeva.git] / fs / hfsplus / inode.c
index c5a979d62c657a866685dac4743fa01515b1653a..8afd7e84f98d5d0417b8c256d60f0ff0329521db 100644 (file)
@@ -36,7 +36,7 @@ static int hfsplus_write_begin(struct file *file, struct address_space *mapping,
        *pagep = NULL;
        ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
                                hfsplus_get_block,
-                               &HFSPLUS_I(mapping->host).phys_size);
+                               &HFSPLUS_I(mapping->host)->phys_size);
        if (unlikely(ret)) {
                loff_t isize = mapping->host->i_size;
                if (pos + len > isize)
@@ -62,13 +62,13 @@ static int hfsplus_releasepage(struct page *page, gfp_t mask)
 
        switch (inode->i_ino) {
        case HFSPLUS_EXT_CNID:
-               tree = HFSPLUS_SB(sb).ext_tree;
+               tree = HFSPLUS_SB(sb)->ext_tree;
                break;
        case HFSPLUS_CAT_CNID:
-               tree = HFSPLUS_SB(sb).cat_tree;
+               tree = HFSPLUS_SB(sb)->cat_tree;
                break;
        case HFSPLUS_ATTR_CNID:
-               tree = HFSPLUS_SB(sb).attr_tree;
+               tree = HFSPLUS_SB(sb)->attr_tree;
                break;
        default:
                BUG();
@@ -172,12 +172,13 @@ static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dent
        struct hfs_find_data fd;
        struct super_block *sb = dir->i_sb;
        struct inode *inode = NULL;
+       struct hfsplus_inode_info *hip;
        int err;
 
        if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc"))
                goto out;
 
-       inode = HFSPLUS_I(dir).rsrc_inode;
+       inode = HFSPLUS_I(dir)->rsrc_inode;
        if (inode)
                goto out;
 
@@ -185,12 +186,13 @@ static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dent
        if (!inode)
                return ERR_PTR(-ENOMEM);
 
+       hip = HFSPLUS_I(inode);
        inode->i_ino = dir->i_ino;
-       INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list);
-       mutex_init(&HFSPLUS_I(inode).extents_lock);
-       HFSPLUS_I(inode).flags = HFSPLUS_FLG_RSRC;
+       INIT_LIST_HEAD(&hip->open_dir_list);
+       mutex_init(&hip->extents_lock);
+       hip->flags = HFSPLUS_FLG_RSRC;
 
-       hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
+       hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
        err = hfsplus_find_cat(sb, dir->i_ino, &fd);
        if (!err)
                err = hfsplus_cat_read_inode(inode, &fd);
@@ -199,10 +201,18 @@ static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dent
                iput(inode);
                return ERR_PTR(err);
        }
-       HFSPLUS_I(inode).rsrc_inode = dir;
-       HFSPLUS_I(dir).rsrc_inode = inode;
+       hip->rsrc_inode = dir;
+       HFSPLUS_I(dir)->rsrc_inode = inode;
        igrab(dir);
-       hlist_add_head(&inode->i_hash, &HFSPLUS_SB(sb).rsrc_inodes);
+
+       /*
+        * __mark_inode_dirty expects inodes to be hashed.  Since we don't
+        * want resource fork inodes in the regular inode space, we make them
+        * appear hashed, but do not put on any lists.  hlist_del()
+        * will work fine and require no locking.
+        */
+       hlist_add_fake(&inode->i_hash);
+
        mark_inode_dirty(inode);
 out:
        d_add(dentry, inode);
@@ -211,30 +221,27 @@ out:
 
 static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, int dir)
 {
-       struct super_block *sb = inode->i_sb;
+       struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
        u16 mode;
 
        mode = be16_to_cpu(perms->mode);
 
        inode->i_uid = be32_to_cpu(perms->owner);
        if (!inode->i_uid && !mode)
-               inode->i_uid = HFSPLUS_SB(sb).uid;
+               inode->i_uid = sbi->uid;
 
        inode->i_gid = be32_to_cpu(perms->group);
        if (!inode->i_gid && !mode)
-               inode->i_gid = HFSPLUS_SB(sb).gid;
+               inode->i_gid = sbi->gid;
 
        if (dir) {
-               mode = mode ? (mode & S_IALLUGO) :
-                       (S_IRWXUGO & ~(HFSPLUS_SB(sb).umask));
+               mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask));
                mode |= S_IFDIR;
        } else if (!mode)
-               mode = S_IFREG | ((S_IRUGO|S_IWUGO) &
-                       ~(HFSPLUS_SB(sb).umask));
+               mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask));
        inode->i_mode = mode;
 
-       HFSPLUS_I(inode).rootflags = perms->rootflags;
-       HFSPLUS_I(inode).userflags = perms->userflags;
+       HFSPLUS_I(inode)->userflags = perms->userflags;
        if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE)
                inode->i_flags |= S_IMMUTABLE;
        else
@@ -245,30 +252,13 @@ static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, i
                inode->i_flags &= ~S_APPEND;
 }
 
-static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms)
-{
-       if (inode->i_flags & S_IMMUTABLE)
-               perms->rootflags |= HFSPLUS_FLG_IMMUTABLE;
-       else
-               perms->rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
-       if (inode->i_flags & S_APPEND)
-               perms->rootflags |= HFSPLUS_FLG_APPEND;
-       else
-               perms->rootflags &= ~HFSPLUS_FLG_APPEND;
-       perms->userflags = HFSPLUS_I(inode).userflags;
-       perms->mode = cpu_to_be16(inode->i_mode);
-       perms->owner = cpu_to_be32(inode->i_uid);
-       perms->group = cpu_to_be32(inode->i_gid);
-       perms->dev = cpu_to_be32(HFSPLUS_I(inode).dev);
-}
-
 static int hfsplus_file_open(struct inode *inode, struct file *file)
 {
        if (HFSPLUS_IS_RSRC(inode))
-               inode = HFSPLUS_I(inode).rsrc_inode;
+               inode = HFSPLUS_I(inode)->rsrc_inode;
        if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
                return -EOVERFLOW;
-       atomic_inc(&HFSPLUS_I(inode).opencnt);
+       atomic_inc(&HFSPLUS_I(inode)->opencnt);
        return 0;
 }
 
@@ -277,12 +267,13 @@ static int hfsplus_file_release(struct inode *inode, struct file *file)
        struct super_block *sb = inode->i_sb;
 
        if (HFSPLUS_IS_RSRC(inode))
-               inode = HFSPLUS_I(inode).rsrc_inode;
-       if (atomic_dec_and_test(&HFSPLUS_I(inode).opencnt)) {
+               inode = HFSPLUS_I(inode)->rsrc_inode;
+       if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) {
                mutex_lock(&inode->i_mutex);
                hfsplus_file_truncate(inode);
                if (inode->i_flags & S_DEAD) {
-                       hfsplus_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL);
+                       hfsplus_delete_cat(inode->i_ino,
+                                          HFSPLUS_SB(sb)->hidden_dir, NULL);
                        hfsplus_delete_inode(inode);
                }
                mutex_unlock(&inode->i_mutex);
@@ -361,47 +352,52 @@ static const struct file_operations hfsplus_file_operations = {
 
 struct inode *hfsplus_new_inode(struct super_block *sb, int mode)
 {
+       struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
        struct inode *inode = new_inode(sb);
+       struct hfsplus_inode_info *hip;
+
        if (!inode)
                return NULL;
 
-       inode->i_ino = HFSPLUS_SB(sb).next_cnid++;
+       inode->i_ino = sbi->next_cnid++;
        inode->i_mode = mode;
        inode->i_uid = current_fsuid();
        inode->i_gid = current_fsgid();
        inode->i_nlink = 1;
        inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
-       INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list);
-       mutex_init(&HFSPLUS_I(inode).extents_lock);
-       atomic_set(&HFSPLUS_I(inode).opencnt, 0);
-       HFSPLUS_I(inode).flags = 0;
-       memset(HFSPLUS_I(inode).first_extents, 0, sizeof(hfsplus_extent_rec));
-       memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec));
-       HFSPLUS_I(inode).alloc_blocks = 0;
-       HFSPLUS_I(inode).first_blocks = 0;
-       HFSPLUS_I(inode).cached_start = 0;
-       HFSPLUS_I(inode).cached_blocks = 0;
-       HFSPLUS_I(inode).phys_size = 0;
-       HFSPLUS_I(inode).fs_blocks = 0;
-       HFSPLUS_I(inode).rsrc_inode = NULL;
+
+       hip = HFSPLUS_I(inode);
+       INIT_LIST_HEAD(&hip->open_dir_list);
+       mutex_init(&hip->extents_lock);
+       atomic_set(&hip->opencnt, 0);
+       hip->flags = 0;
+       memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec));
+       memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
+       hip->alloc_blocks = 0;
+       hip->first_blocks = 0;
+       hip->cached_start = 0;
+       hip->cached_blocks = 0;
+       hip->phys_size = 0;
+       hip->fs_blocks = 0;
+       hip->rsrc_inode = NULL;
        if (S_ISDIR(inode->i_mode)) {
                inode->i_size = 2;
-               HFSPLUS_SB(sb).folder_count++;
+               sbi->folder_count++;
                inode->i_op = &hfsplus_dir_inode_operations;
                inode->i_fop = &hfsplus_dir_operations;
        } else if (S_ISREG(inode->i_mode)) {
-               HFSPLUS_SB(sb).file_count++;
+               sbi->file_count++;
                inode->i_op = &hfsplus_file_inode_operations;
                inode->i_fop = &hfsplus_file_operations;
                inode->i_mapping->a_ops = &hfsplus_aops;
-               HFSPLUS_I(inode).clump_blocks = HFSPLUS_SB(sb).data_clump_blocks;
+               hip->clump_blocks = sbi->data_clump_blocks;
        } else if (S_ISLNK(inode->i_mode)) {
-               HFSPLUS_SB(sb).file_count++;
+               sbi->file_count++;
                inode->i_op = &page_symlink_inode_operations;
                inode->i_mapping->a_ops = &hfsplus_aops;
-               HFSPLUS_I(inode).clump_blocks = 1;
+               hip->clump_blocks = 1;
        } else
-               HFSPLUS_SB(sb).file_count++;
+               sbi->file_count++;
        insert_inode_hash(inode);
        mark_inode_dirty(inode);
        sb->s_dirt = 1;
@@ -414,11 +410,11 @@ void hfsplus_delete_inode(struct inode *inode)
        struct super_block *sb = inode->i_sb;
 
        if (S_ISDIR(inode->i_mode)) {
-               HFSPLUS_SB(sb).folder_count--;
+               HFSPLUS_SB(sb)->folder_count--;
                sb->s_dirt = 1;
                return;
        }
-       HFSPLUS_SB(sb).file_count--;
+       HFSPLUS_SB(sb)->file_count--;
        if (S_ISREG(inode->i_mode)) {
                if (!inode->i_nlink) {
                        inode->i_size = 0;
@@ -434,34 +430,39 @@ void hfsplus_delete_inode(struct inode *inode)
 void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
 {
        struct super_block *sb = inode->i_sb;
+       struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
+       struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
        u32 count;
        int i;
 
-       memcpy(&HFSPLUS_I(inode).first_extents, &fork->extents,
-              sizeof(hfsplus_extent_rec));
+       memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec));
        for (count = 0, i = 0; i < 8; i++)
                count += be32_to_cpu(fork->extents[i].block_count);
-       HFSPLUS_I(inode).first_blocks = count;
-       memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec));
-       HFSPLUS_I(inode).cached_start = 0;
-       HFSPLUS_I(inode).cached_blocks = 0;
-
-       HFSPLUS_I(inode).alloc_blocks = be32_to_cpu(fork->total_blocks);
-       inode->i_size = HFSPLUS_I(inode).phys_size = be64_to_cpu(fork->total_size);
-       HFSPLUS_I(inode).fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
-       inode_set_bytes(inode, HFSPLUS_I(inode).fs_blocks << sb->s_blocksize_bits);
-       HFSPLUS_I(inode).clump_blocks = be32_to_cpu(fork->clump_size) >> HFSPLUS_SB(sb).alloc_blksz_shift;
-       if (!HFSPLUS_I(inode).clump_blocks)
-               HFSPLUS_I(inode).clump_blocks = HFSPLUS_IS_RSRC(inode) ? HFSPLUS_SB(sb).rsrc_clump_blocks :
-                               HFSPLUS_SB(sb).data_clump_blocks;
+       hip->first_blocks = count;
+       memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
+       hip->cached_start = 0;
+       hip->cached_blocks = 0;
+
+       hip->alloc_blocks = be32_to_cpu(fork->total_blocks);
+       hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size);
+       hip->fs_blocks =
+               (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
+       inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
+       hip->clump_blocks =
+               be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift;
+       if (!hip->clump_blocks) {
+               hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ?
+                       sbi->rsrc_clump_blocks :
+                       sbi->data_clump_blocks;
+       }
 }
 
 void hfsplus_inode_write_fork(struct inode *inode, struct hfsplus_fork_raw *fork)
 {
-       memcpy(&fork->extents, &HFSPLUS_I(inode).first_extents,
+       memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents,
               sizeof(hfsplus_extent_rec));
        fork->total_size = cpu_to_be64(inode->i_size);
-       fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode).alloc_blocks);
+       fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks);
 }
 
 int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
@@ -472,7 +473,7 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
 
        type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset);
 
-       HFSPLUS_I(inode).dev = 0;
+       HFSPLUS_I(inode)->linkid = 0;
        if (type == HFSPLUS_FOLDER) {
                struct hfsplus_cat_folder *folder = &entry.folder;
 
@@ -486,8 +487,8 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
                inode->i_atime = hfsp_mt2ut(folder->access_date);
                inode->i_mtime = hfsp_mt2ut(folder->content_mod_date);
                inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date);
-               HFSPLUS_I(inode).create_date = folder->create_date;
-               HFSPLUS_I(inode).fs_blocks = 0;
+               HFSPLUS_I(inode)->create_date = folder->create_date;
+               HFSPLUS_I(inode)->fs_blocks = 0;
                inode->i_op = &hfsplus_dir_inode_operations;
                inode->i_fop = &hfsplus_dir_operations;
        } else if (type == HFSPLUS_FILE) {
@@ -518,7 +519,7 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd)
                inode->i_atime = hfsp_mt2ut(file->access_date);
                inode->i_mtime = hfsp_mt2ut(file->content_mod_date);
                inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date);
-               HFSPLUS_I(inode).create_date = file->create_date;
+               HFSPLUS_I(inode)->create_date = file->create_date;
        } else {
                printk(KERN_ERR "hfs: bad catalog entry used to create inode\n");
                res = -EIO;
@@ -533,12 +534,12 @@ int hfsplus_cat_write_inode(struct inode *inode)
        hfsplus_cat_entry entry;
 
        if (HFSPLUS_IS_RSRC(inode))
-               main_inode = HFSPLUS_I(inode).rsrc_inode;
+               main_inode = HFSPLUS_I(inode)->rsrc_inode;
 
        if (!main_inode->i_nlink)
                return 0;
 
-       if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb).cat_tree, &fd))
+       if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd))
                /* panic? */
                return -EIO;
 
@@ -554,7 +555,7 @@ int hfsplus_cat_write_inode(struct inode *inode)
                hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
                                        sizeof(struct hfsplus_cat_folder));
                /* simple node checks? */
-               hfsplus_set_perms(inode, &folder->permissions);
+               hfsplus_cat_set_perms(inode, &folder->permissions);
                folder->access_date = hfsp_ut2mt(inode->i_atime);
                folder->content_mod_date = hfsp_ut2mt(inode->i_mtime);
                folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime);
@@ -576,11 +577,7 @@ int hfsplus_cat_write_inode(struct inode *inode)
                hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
                                        sizeof(struct hfsplus_cat_file));
                hfsplus_inode_write_fork(inode, &file->data_fork);
-               if (S_ISREG(inode->i_mode))
-                       HFSPLUS_I(inode).dev = inode->i_nlink;
-               if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
-                       HFSPLUS_I(inode).dev = kdev_t_to_nr(inode->i_rdev);
-               hfsplus_set_perms(inode, &file->permissions);
+               hfsplus_cat_set_perms(inode, &file->permissions);
                if ((file->permissions.rootflags | file->permissions.userflags) & HFSPLUS_FLG_IMMUTABLE)
                        file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED);
                else