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author | Christoph Hellwig <hch@tuxera.com> | 2010-10-01 05:42:59 +0200 |
---|---|---|
committer | Christoph Hellwig <hch@lst.de> | 2010-10-01 05:42:59 +0200 |
commit | dd73a01a30d729e8fa6f829c4582650e258e36f9 (patch) | |
tree | befe5a0bf762211d1a907ad11c15c4a21d7c4f74 /fs/hfsplus/super.c | |
parent | e753a62156e952fd5a3c64f98454d9aeee3a2546 (diff) | |
download | linux-stable-dd73a01a30d729e8fa6f829c4582650e258e36f9.tar.gz linux-stable-dd73a01a30d729e8fa6f829c4582650e258e36f9.tar.bz2 linux-stable-dd73a01a30d729e8fa6f829c4582650e258e36f9.zip |
hfsplus: fix HFSPLUS_SB calling convention
HFSPLUS_SB doesn't return a pointer to the hfsplus-specific superblock
information like all other FOO_SB macros, but dereference the pointer in a way
that made it look like a direct struct derefence. This only works as long
as the HFSPLUS_SB macro is used directly and prevents us from keepig a local
hfsplus_sb_info pointer. Fix the calling convention and introduce a local
sbi variable in all functions that use it constantly.
Signed-off-by: Christoph Hellwig <hch@tuxera.com>
Diffstat (limited to 'fs/hfsplus/super.c')
-rw-r--r-- | fs/hfsplus/super.c | 151 |
1 files changed, 80 insertions, 71 deletions
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c index a1d3fd920403..1bf00b9ecc1a 100644 --- a/fs/hfsplus/super.c +++ b/fs/hfsplus/super.c @@ -41,7 +41,7 @@ struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino) if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID) { read_inode: - hfs_find_init(HFSPLUS_SB(inode->i_sb).cat_tree, &fd); + hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd); err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd); if (!err) err = hfsplus_cat_read_inode(inode, &fd); @@ -50,7 +50,7 @@ struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino) goto bad_inode; goto done; } - vhdr = HFSPLUS_SB(inode->i_sb).s_vhdr; + vhdr = HFSPLUS_SB(inode->i_sb)->s_vhdr; switch(inode->i_ino) { case HFSPLUS_ROOT_CNID: goto read_inode; @@ -89,6 +89,7 @@ bad_inode: static int hfsplus_write_inode(struct inode *inode, struct writeback_control *wbc) { + struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); struct hfsplus_vh *vhdr; int ret = 0; @@ -97,48 +98,48 @@ static int hfsplus_write_inode(struct inode *inode, if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID) { return hfsplus_cat_write_inode(inode); } - vhdr = HFSPLUS_SB(inode->i_sb).s_vhdr; + vhdr = sbi->s_vhdr; switch (inode->i_ino) { case HFSPLUS_ROOT_CNID: ret = hfsplus_cat_write_inode(inode); break; case HFSPLUS_EXT_CNID: if (vhdr->ext_file.total_size != cpu_to_be64(inode->i_size)) { - HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP; + sbi->flags |= HFSPLUS_SB_WRITEBACKUP; inode->i_sb->s_dirt = 1; } hfsplus_inode_write_fork(inode, &vhdr->ext_file); - hfs_btree_write(HFSPLUS_SB(inode->i_sb).ext_tree); + hfs_btree_write(sbi->ext_tree); break; case HFSPLUS_CAT_CNID: if (vhdr->cat_file.total_size != cpu_to_be64(inode->i_size)) { - HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP; + sbi->flags |= HFSPLUS_SB_WRITEBACKUP; inode->i_sb->s_dirt = 1; } hfsplus_inode_write_fork(inode, &vhdr->cat_file); - hfs_btree_write(HFSPLUS_SB(inode->i_sb).cat_tree); + hfs_btree_write(sbi->cat_tree); break; case HFSPLUS_ALLOC_CNID: if (vhdr->alloc_file.total_size != cpu_to_be64(inode->i_size)) { - HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP; + sbi->flags |= HFSPLUS_SB_WRITEBACKUP; inode->i_sb->s_dirt = 1; } hfsplus_inode_write_fork(inode, &vhdr->alloc_file); break; case HFSPLUS_START_CNID: if (vhdr->start_file.total_size != cpu_to_be64(inode->i_size)) { - HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP; + sbi->flags |= HFSPLUS_SB_WRITEBACKUP; inode->i_sb->s_dirt = 1; } hfsplus_inode_write_fork(inode, &vhdr->start_file); break; case HFSPLUS_ATTR_CNID: if (vhdr->attr_file.total_size != cpu_to_be64(inode->i_size)) { - HFSPLUS_SB(inode->i_sb).flags |= HFSPLUS_SB_WRITEBACKUP; + sbi->flags |= HFSPLUS_SB_WRITEBACKUP; inode->i_sb->s_dirt = 1; } hfsplus_inode_write_fork(inode, &vhdr->attr_file); - hfs_btree_write(HFSPLUS_SB(inode->i_sb).attr_tree); + hfs_btree_write(sbi->attr_tree); break; } return ret; @@ -157,44 +158,46 @@ static void hfsplus_evict_inode(struct inode *inode) int hfsplus_sync_fs(struct super_block *sb, int wait) { - struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); + struct hfsplus_vh *vhdr = sbi->s_vhdr; dprint(DBG_SUPER, "hfsplus_write_super\n"); - mutex_lock(&HFSPLUS_SB(sb).alloc_mutex); + mutex_lock(&sbi->alloc_mutex); sb->s_dirt = 0; - vhdr->free_blocks = cpu_to_be32(HFSPLUS_SB(sb).free_blocks); - vhdr->next_alloc = cpu_to_be32(HFSPLUS_SB(sb).next_alloc); - vhdr->next_cnid = cpu_to_be32(HFSPLUS_SB(sb).next_cnid); - vhdr->folder_count = cpu_to_be32(HFSPLUS_SB(sb).folder_count); - vhdr->file_count = cpu_to_be32(HFSPLUS_SB(sb).file_count); + vhdr->free_blocks = cpu_to_be32(sbi->free_blocks); + vhdr->next_alloc = cpu_to_be32(sbi->next_alloc); + vhdr->next_cnid = cpu_to_be32(sbi->next_cnid); + vhdr->folder_count = cpu_to_be32(sbi->folder_count); + vhdr->file_count = cpu_to_be32(sbi->file_count); - mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh); - if (HFSPLUS_SB(sb).flags & HFSPLUS_SB_WRITEBACKUP) { - if (HFSPLUS_SB(sb).sect_count) { + mark_buffer_dirty(sbi->s_vhbh); + if (sbi->flags & HFSPLUS_SB_WRITEBACKUP) { + if (sbi->sect_count) { struct buffer_head *bh; u32 block, offset; - block = HFSPLUS_SB(sb).blockoffset; - block += (HFSPLUS_SB(sb).sect_count - 2) >> (sb->s_blocksize_bits - 9); - offset = ((HFSPLUS_SB(sb).sect_count - 2) << 9) & (sb->s_blocksize - 1); - printk(KERN_DEBUG "hfs: backup: %u,%u,%u,%u\n", HFSPLUS_SB(sb).blockoffset, - HFSPLUS_SB(sb).sect_count, block, offset); + block = sbi->blockoffset; + block += (sbi->sect_count - 2) >> (sb->s_blocksize_bits - 9); + offset = ((sbi->sect_count - 2) << 9) & (sb->s_blocksize - 1); + printk(KERN_DEBUG "hfs: backup: %u,%u,%u,%u\n", + sbi->blockoffset, sbi->sect_count, + block, offset); bh = sb_bread(sb, block); if (bh) { vhdr = (struct hfsplus_vh *)(bh->b_data + offset); if (be16_to_cpu(vhdr->signature) == HFSPLUS_VOLHEAD_SIG) { - memcpy(vhdr, HFSPLUS_SB(sb).s_vhdr, sizeof(*vhdr)); + memcpy(vhdr, sbi->s_vhdr, sizeof(*vhdr)); mark_buffer_dirty(bh); brelse(bh); } else printk(KERN_WARNING "hfs: backup not found!\n"); } } - HFSPLUS_SB(sb).flags &= ~HFSPLUS_SB_WRITEBACKUP; + sbi->flags &= ~HFSPLUS_SB_WRITEBACKUP; } - mutex_unlock(&HFSPLUS_SB(sb).alloc_mutex); + mutex_unlock(&sbi->alloc_mutex); return 0; } @@ -208,28 +211,31 @@ static void hfsplus_write_super(struct super_block *sb) static void hfsplus_put_super(struct super_block *sb) { + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); + dprint(DBG_SUPER, "hfsplus_put_super\n"); + if (!sb->s_fs_info) return; if (sb->s_dirt) hfsplus_write_super(sb); - if (!(sb->s_flags & MS_RDONLY) && HFSPLUS_SB(sb).s_vhdr) { - struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr; + if (!(sb->s_flags & MS_RDONLY) && sbi->s_vhdr) { + struct hfsplus_vh *vhdr = sbi->s_vhdr; vhdr->modify_date = hfsp_now2mt(); vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_UNMNT); vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_INCNSTNT); - mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh); - sync_dirty_buffer(HFSPLUS_SB(sb).s_vhbh); + mark_buffer_dirty(sbi->s_vhbh); + sync_dirty_buffer(sbi->s_vhbh); } - hfs_btree_close(HFSPLUS_SB(sb).cat_tree); - hfs_btree_close(HFSPLUS_SB(sb).ext_tree); - iput(HFSPLUS_SB(sb).alloc_file); - iput(HFSPLUS_SB(sb).hidden_dir); - brelse(HFSPLUS_SB(sb).s_vhbh); - unload_nls(HFSPLUS_SB(sb).nls); + hfs_btree_close(sbi->cat_tree); + hfs_btree_close(sbi->ext_tree); + iput(sbi->alloc_file); + iput(sbi->hidden_dir); + brelse(sbi->s_vhbh); + unload_nls(sbi->nls); kfree(sb->s_fs_info); sb->s_fs_info = NULL; } @@ -237,15 +243,16 @@ static void hfsplus_put_super(struct super_block *sb) static int hfsplus_statfs(struct dentry *dentry, struct kstatfs *buf) { struct super_block *sb = dentry->d_sb; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); u64 id = huge_encode_dev(sb->s_bdev->bd_dev); buf->f_type = HFSPLUS_SUPER_MAGIC; buf->f_bsize = sb->s_blocksize; - buf->f_blocks = HFSPLUS_SB(sb).total_blocks << HFSPLUS_SB(sb).fs_shift; - buf->f_bfree = HFSPLUS_SB(sb).free_blocks << HFSPLUS_SB(sb).fs_shift; + buf->f_blocks = sbi->total_blocks << sbi->fs_shift; + buf->f_bfree = sbi->free_blocks << sbi->fs_shift; buf->f_bavail = buf->f_bfree; buf->f_files = 0xFFFFFFFF; - buf->f_ffree = 0xFFFFFFFF - HFSPLUS_SB(sb).next_cnid; + buf->f_ffree = 0xFFFFFFFF - sbi->next_cnid; buf->f_fsid.val[0] = (u32)id; buf->f_fsid.val[1] = (u32)(id >> 32); buf->f_namelen = HFSPLUS_MAX_STRLEN; @@ -258,11 +265,11 @@ static int hfsplus_remount(struct super_block *sb, int *flags, char *data) if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) return 0; if (!(*flags & MS_RDONLY)) { - struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr; + struct hfsplus_vh *vhdr = HFSPLUS_SB(sb)->s_vhdr; struct hfsplus_sb_info sbi; memset(&sbi, 0, sizeof(struct hfsplus_sb_info)); - sbi.nls = HFSPLUS_SB(sb).nls; + sbi.nls = HFSPLUS_SB(sb)->nls; if (!hfsplus_parse_options(data, &sbi)) return -EINVAL; @@ -340,7 +347,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) err = -EINVAL; goto cleanup; } - vhdr = HFSPLUS_SB(sb).s_vhdr; + vhdr = sbi->s_vhdr; /* Copy parts of the volume header into the superblock */ sb->s_magic = HFSPLUS_VOLHEAD_SIG; @@ -349,18 +356,20 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) printk(KERN_ERR "hfs: wrong filesystem version\n"); goto cleanup; } - HFSPLUS_SB(sb).total_blocks = be32_to_cpu(vhdr->total_blocks); - HFSPLUS_SB(sb).free_blocks = be32_to_cpu(vhdr->free_blocks); - HFSPLUS_SB(sb).next_alloc = be32_to_cpu(vhdr->next_alloc); - HFSPLUS_SB(sb).next_cnid = be32_to_cpu(vhdr->next_cnid); - HFSPLUS_SB(sb).file_count = be32_to_cpu(vhdr->file_count); - HFSPLUS_SB(sb).folder_count = be32_to_cpu(vhdr->folder_count); - HFSPLUS_SB(sb).data_clump_blocks = be32_to_cpu(vhdr->data_clump_sz) >> HFSPLUS_SB(sb).alloc_blksz_shift; - if (!HFSPLUS_SB(sb).data_clump_blocks) - HFSPLUS_SB(sb).data_clump_blocks = 1; - HFSPLUS_SB(sb).rsrc_clump_blocks = be32_to_cpu(vhdr->rsrc_clump_sz) >> HFSPLUS_SB(sb).alloc_blksz_shift; - if (!HFSPLUS_SB(sb).rsrc_clump_blocks) - HFSPLUS_SB(sb).rsrc_clump_blocks = 1; + sbi->total_blocks = be32_to_cpu(vhdr->total_blocks); + sbi->free_blocks = be32_to_cpu(vhdr->free_blocks); + sbi->next_alloc = be32_to_cpu(vhdr->next_alloc); + sbi->next_cnid = be32_to_cpu(vhdr->next_cnid); + sbi->file_count = be32_to_cpu(vhdr->file_count); + sbi->folder_count = be32_to_cpu(vhdr->folder_count); + sbi->data_clump_blocks = + be32_to_cpu(vhdr->data_clump_sz) >> sbi->alloc_blksz_shift; + if (!sbi->data_clump_blocks) + sbi->data_clump_blocks = 1; + sbi->rsrc_clump_blocks = + be32_to_cpu(vhdr->rsrc_clump_sz) >> sbi->alloc_blksz_shift; + if (!sbi->rsrc_clump_blocks) + sbi->rsrc_clump_blocks = 1; /* Set up operations so we can load metadata */ sb->s_op = &hfsplus_sops; @@ -383,13 +392,13 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) sbi->flags &= ~HFSPLUS_SB_FORCE; /* Load metadata objects (B*Trees) */ - HFSPLUS_SB(sb).ext_tree = hfs_btree_open(sb, HFSPLUS_EXT_CNID); - if (!HFSPLUS_SB(sb).ext_tree) { + sbi->ext_tree = hfs_btree_open(sb, HFSPLUS_EXT_CNID); + if (!sbi->ext_tree) { printk(KERN_ERR "hfs: failed to load extents file\n"); goto cleanup; } - HFSPLUS_SB(sb).cat_tree = hfs_btree_open(sb, HFSPLUS_CAT_CNID); - if (!HFSPLUS_SB(sb).cat_tree) { + sbi->cat_tree = hfs_btree_open(sb, HFSPLUS_CAT_CNID); + if (!sbi->cat_tree) { printk(KERN_ERR "hfs: failed to load catalog file\n"); goto cleanup; } @@ -400,7 +409,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) err = PTR_ERR(inode); goto cleanup; } - HFSPLUS_SB(sb).alloc_file = inode; + sbi->alloc_file = inode; /* Load the root directory */ root = hfsplus_iget(sb, HFSPLUS_ROOT_CNID); @@ -419,7 +428,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) str.len = sizeof(HFSP_HIDDENDIR_NAME) - 1; str.name = HFSP_HIDDENDIR_NAME; - hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd); + hfs_find_init(sbi->cat_tree, &fd); hfsplus_cat_build_key(sb, fd.search_key, HFSPLUS_ROOT_CNID, &str); if (!hfs_brec_read(&fd, &entry, sizeof(entry))) { hfs_find_exit(&fd); @@ -430,7 +439,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) err = PTR_ERR(inode); goto cleanup; } - HFSPLUS_SB(sb).hidden_dir = inode; + sbi->hidden_dir = inode; } else hfs_find_exit(&fd); @@ -445,15 +454,15 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) be32_add_cpu(&vhdr->write_count, 1); vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_UNMNT); vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_INCNSTNT); - mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh); - sync_dirty_buffer(HFSPLUS_SB(sb).s_vhbh); + mark_buffer_dirty(sbi->s_vhbh); + sync_dirty_buffer(sbi->s_vhbh); - if (!HFSPLUS_SB(sb).hidden_dir) { + if (!sbi->hidden_dir) { printk(KERN_DEBUG "hfs: create hidden dir...\n"); - HFSPLUS_SB(sb).hidden_dir = hfsplus_new_inode(sb, S_IFDIR); - hfsplus_create_cat(HFSPLUS_SB(sb).hidden_dir->i_ino, sb->s_root->d_inode, - &str, HFSPLUS_SB(sb).hidden_dir); - mark_inode_dirty(HFSPLUS_SB(sb).hidden_dir); + sbi->hidden_dir = hfsplus_new_inode(sb, S_IFDIR); + hfsplus_create_cat(sbi->hidden_dir->i_ino, sb->s_root->d_inode, + &str, sbi->hidden_dir); + mark_inode_dirty(sbi->hidden_dir); } out: unload_nls(sbi->nls); |