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!
diff --git a/fs/bad_inode.c b/fs/bad_inode.c
new file mode 100644
index 0000000..672a319
--- /dev/null
+++ b/fs/bad_inode.c
@@ -0,0 +1,123 @@
+/*
+ * linux/fs/bad_inode.c
+ *
+ * Copyright (C) 1997, Stephen Tweedie
+ *
+ * Provide stub functions for unreadable inodes
+ *
+ * Fabian Frederick : August 2003 - All file operations assigned to EIO
+ */
+
+#include <linux/fs.h>
+#include <linux/module.h>
+#include <linux/stat.h>
+#include <linux/time.h>
+#include <linux/smp_lock.h>
+#include <linux/namei.h>
+
+static int return_EIO(void)
+{
+ return -EIO;
+}
+
+#define EIO_ERROR ((void *) (return_EIO))
+
+static struct file_operations bad_file_ops =
+{
+ .llseek = EIO_ERROR,
+ .aio_read = EIO_ERROR,
+ .read = EIO_ERROR,
+ .write = EIO_ERROR,
+ .aio_write = EIO_ERROR,
+ .readdir = EIO_ERROR,
+ .poll = EIO_ERROR,
+ .ioctl = EIO_ERROR,
+ .mmap = EIO_ERROR,
+ .open = EIO_ERROR,
+ .flush = EIO_ERROR,
+ .release = EIO_ERROR,
+ .fsync = EIO_ERROR,
+ .aio_fsync = EIO_ERROR,
+ .fasync = EIO_ERROR,
+ .lock = EIO_ERROR,
+ .readv = EIO_ERROR,
+ .writev = EIO_ERROR,
+ .sendfile = EIO_ERROR,
+ .sendpage = EIO_ERROR,
+ .get_unmapped_area = EIO_ERROR,
+};
+
+struct inode_operations bad_inode_ops =
+{
+ .create = EIO_ERROR,
+ .lookup = EIO_ERROR,
+ .link = EIO_ERROR,
+ .unlink = EIO_ERROR,
+ .symlink = EIO_ERROR,
+ .mkdir = EIO_ERROR,
+ .rmdir = EIO_ERROR,
+ .mknod = EIO_ERROR,
+ .rename = EIO_ERROR,
+ .readlink = EIO_ERROR,
+ /* follow_link must be no-op, otherwise unmounting this inode
+ won't work */
+ .truncate = EIO_ERROR,
+ .permission = EIO_ERROR,
+ .getattr = EIO_ERROR,
+ .setattr = EIO_ERROR,
+ .setxattr = EIO_ERROR,
+ .getxattr = EIO_ERROR,
+ .listxattr = EIO_ERROR,
+ .removexattr = EIO_ERROR,
+};
+
+
+/*
+ * When a filesystem is unable to read an inode due to an I/O error in
+ * its read_inode() function, it can call make_bad_inode() to return a
+ * set of stubs which will return EIO errors as required.
+ *
+ * We only need to do limited initialisation: all other fields are
+ * preinitialised to zero automatically.
+ */
+
+/**
+ * make_bad_inode - mark an inode bad due to an I/O error
+ * @inode: Inode to mark bad
+ *
+ * When an inode cannot be read due to a media or remote network
+ * failure this function makes the inode "bad" and causes I/O operations
+ * on it to fail from this point on.
+ */
+
+void make_bad_inode(struct inode * inode)
+{
+ remove_inode_hash(inode);
+
+ inode->i_mode = S_IFREG;
+ inode->i_atime = inode->i_mtime = inode->i_ctime =
+ current_fs_time(inode->i_sb);
+ inode->i_op = &bad_inode_ops;
+ inode->i_fop = &bad_file_ops;
+}
+EXPORT_SYMBOL(make_bad_inode);
+
+/*
+ * This tests whether an inode has been flagged as bad. The test uses
+ * &bad_inode_ops to cover the case of invalidated inodes as well as
+ * those created by make_bad_inode() above.
+ */
+
+/**
+ * is_bad_inode - is an inode errored
+ * @inode: inode to test
+ *
+ * Returns true if the inode in question has been marked as bad.
+ */
+
+int is_bad_inode(struct inode * inode)
+{
+ return (inode->i_op == &bad_inode_ops);
+}
+
+EXPORT_SYMBOL(is_bad_inode);
