From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- fs/befs/inode.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 fs/befs/inode.c (limited to 'fs/befs/inode.c') diff --git a/fs/befs/inode.c b/fs/befs/inode.c new file mode 100644 index 00000000000..d41c9247ae8 --- /dev/null +++ b/fs/befs/inode.c @@ -0,0 +1,53 @@ +/* + * inode.c + * + * Copyright (C) 2001 Will Dyson + */ + +#include + +#include "befs.h" +#include "inode.h" +#include "endian.h" + +/* + Validates the correctness of the befs inode + Returns BEFS_OK if the inode should be used, otherwise + returns BEFS_BAD_INODE +*/ +int +befs_check_inode(struct super_block *sb, befs_inode * raw_inode, + befs_blocknr_t inode) +{ + u32 magic1 = fs32_to_cpu(sb, raw_inode->magic1); + befs_inode_addr ino_num = fsrun_to_cpu(sb, raw_inode->inode_num); + u32 flags = fs32_to_cpu(sb, raw_inode->flags); + + /* check magic header. */ + if (magic1 != BEFS_INODE_MAGIC1) { + befs_error(sb, + "Inode has a bad magic header - inode = %lu", inode); + return BEFS_BAD_INODE; + } + + /* + * Sanity check2: inodes store their own block address. Check it. + */ + if (inode != iaddr2blockno(sb, &ino_num)) { + befs_error(sb, "inode blocknr field disagrees with vfs " + "VFS: %lu, Inode %lu", + inode, iaddr2blockno(sb, &ino_num)); + return BEFS_BAD_INODE; + } + + /* + * check flag + */ + + if (!(flags & BEFS_INODE_IN_USE)) { + befs_error(sb, "inode is not used - inode = %lu", inode); + return BEFS_BAD_INODE; + } + + return BEFS_OK; +} -- cgit v1.2.3