From 496ee9b8f349a8ae2065114c414a47e89bdeb930 Mon Sep 17 00:00:00 2001 From: Lubomir Rintel <lkundrak@v3.sk> Date: Thu, 22 Jul 2010 03:11:48 +0200 Subject: V7: Adjust sanity checks for some volumes Newly mkfs-ed filesystems from Seventh Edition have last modification time set to zero, but are otherwise perfectly valid. Also, tighten up other sanity checks to filter out most filesystems with different bytesex than we're using. Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> --- fs/sysv/super.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'fs') diff --git a/fs/sysv/super.c b/fs/sysv/super.c index 2da3075aff7..5c0aab0b7e1 100644 --- a/fs/sysv/super.c +++ b/fs/sysv/super.c @@ -469,7 +469,7 @@ static int v7_fill_super(struct super_block *sb, void *data, int silent) v7sb = (struct v7_super_block *) bh->b_data; if (fs16_to_cpu(sbi, v7sb->s_nfree) > V7_NICFREE || fs16_to_cpu(sbi, v7sb->s_ninode) > V7_NICINOD || - fs32_to_cpu(sbi, v7sb->s_time) == 0) + fs32_to_cpu(sbi, v7sb->s_fsize) > V7_MAXSIZE) goto failed; /* plausibility check on root inode: it is a directory, @@ -479,7 +479,9 @@ static int v7_fill_super(struct super_block *sb, void *data, int silent) v7i = (struct sysv_inode *)(bh2->b_data + 64); if ((fs16_to_cpu(sbi, v7i->i_mode) & ~0777) != S_IFDIR || (fs32_to_cpu(sbi, v7i->i_size) == 0) || - (fs32_to_cpu(sbi, v7i->i_size) & 017) != 0) + (fs32_to_cpu(sbi, v7i->i_size) & 017) || + (fs32_to_cpu(sbi, v7i->i_size) > V7_NFILES * + sizeof (struct sysv_dir_entry))) goto failed; brelse(bh2); bh2 = NULL; -- cgit v1.2.3-18-g5258