From f1fcd9f0e96d12498afb5543107f560f196cfcf3 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 15 Sep 2011 10:48:40 -0400 Subject: [PATCH] hfsplus: fix filesystem size checks generic_check_addressable can't deal with hfsplus's larger than page size allocation blocks, so simply opencode the checks that we actually need in hfsplus_fill_super. Signed-off-by: Christoph Hellwig Reported-by: Pavel Ivanov Tested-by: Pavel Ivanov Signed-off-by: Linus Torvalds --- fs/hfsplus/super.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c index cadbb8c81887..d24a9b666a23 100644 --- a/fs/hfsplus/super.c +++ b/fs/hfsplus/super.c @@ -344,6 +344,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) struct inode *root, *inode; struct qstr str; struct nls_table *nls = NULL; + u64 last_fs_block, last_fs_page; int err; err = -EINVAL; @@ -399,9 +400,13 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) if (!sbi->rsrc_clump_blocks) sbi->rsrc_clump_blocks = 1; - err = generic_check_addressable(sbi->alloc_blksz_shift, - sbi->total_blocks); - if (err) { + err = -EFBIG; + last_fs_block = sbi->total_blocks - 1; + last_fs_page = (last_fs_block << sbi->alloc_blksz_shift) >> + PAGE_CACHE_SHIFT; + + if ((last_fs_block > (sector_t)(~0ULL) >> (sbi->alloc_blksz_shift - 9)) || + (last_fs_page > (pgoff_t)(~0ULL))) { printk(KERN_ERR "hfs: filesystem size too large.\n"); goto out_free_vhdr; } -- 2.30.2