Return to bad_inode.c CVS log

Up to [Development] / linux-2.6-xfs-all / fs

Update 2.6.x-xfs to 2.6.23-rc4.

Also update fs/xfs with external mainline changes.
There were 12 such missing commits that I detected:

--------
commit ad690ef9e690f6c31f7d310b09ef1314bcec9033
Author: Al Viro <viro@ftp.linux.org.uk>
    xfs ioctl __user annotations

commit 20c2df83d25c6a95affe6157a4c9cac4cf5ffaac
Author: Paul Mundt <lethal@linux-sh.org>
    mm: Remove slab destructors from kmem_cache_create().

commit d0217ac04ca6591841e5665f518e38064f4e65bd
Author: Nick Piggin <npiggin@suse.de>
    mm: fault feedback #1

commit 54cb8821de07f2ffcd28c380ce9b93d5784b40d7
Author: Nick Piggin <npiggin@suse.de>
    mm: merge populate and nopage into fault (fixes nonlinear)

commit d00806b183152af6d24f46f0c33f14162ca1262a
Author: Nick Piggin <npiggin@suse.de>
    mm: fix fault vs invalidate race for linear mappings

commit a569425512253992cc64ebf8b6d00a62f986db3e
Author: Christoph Hellwig <hch@infradead.org>
    knfsd: exportfs: add exportfs.h header

commit 831441862956fffa17b9801db37e6ea1650b0f69
Author: Rafael J. Wysocki <rjw@sisk.pl>
    Freezer: make kernel threads nonfreezable by default

commit 8e1f936b73150f5095448a0fee6d4f30a1f9001d
Author: Rusty Russell <rusty@rustcorp.com.au>
    mm: clean up and kernelify shrinker registration

commit 5ffc4ef45b3b0a57872f631b4e4ceb8ace0d7496
Author: Jens Axboe <jens.axboe@oracle.com>
    sendfile: remove .sendfile from filesystems that use generic_file_sendfile()

commit 8bb7844286fb8c9fce6f65d8288aeb09d03a5e0d
Author: Rafael J. Wysocki <rjw@sisk.pl>
    Add suspend-related notifications for CPU hotplug

commit 59c51591a0ac7568824f541f57de967e88adaa07
Author: Michael Opdenacker <michael@free-electrons.com>
    Fix occurrences of "the the "

commit 0ceb331433e8aad9c5f441a965d7c681f8b9046f
Author: Dmitriy Monakhov <dmonakhov@openvz.org>
    mm: move common segment checks to separate helper function
--------
Merge of 2.6.x-xfs-melb:linux:29656b by kenmcd.

/*
 *  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/namei.h>
#include <linux/poll.h>


static loff_t bad_file_llseek(struct file *file, loff_t offset, int origin)
{
	return -EIO;
}

static ssize_t bad_file_read(struct file *filp, char __user *buf,
			size_t size, loff_t *ppos)
{
        return -EIO;
}

static ssize_t bad_file_write(struct file *filp, const char __user *buf,
			size_t siz, loff_t *ppos)
{
        return -EIO;
}

static ssize_t bad_file_aio_read(struct kiocb *iocb, const struct iovec *iov,
			unsigned long nr_segs, loff_t pos)
{
	return -EIO;
}

static ssize_t bad_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
			unsigned long nr_segs, loff_t pos)
{
	return -EIO;
}

static int bad_file_readdir(struct file *filp, void *dirent, filldir_t filldir)
{
	return -EIO;
}

static unsigned int bad_file_poll(struct file *filp, poll_table *wait)
{
	return POLLERR;
}

static int bad_file_ioctl (struct inode *inode, struct file *filp,
			unsigned int cmd, unsigned long arg)
{
	return -EIO;
}

static long bad_file_unlocked_ioctl(struct file *file, unsigned cmd,
			unsigned long arg)
{
	return -EIO;
}

static long bad_file_compat_ioctl(struct file *file, unsigned int cmd,
			unsigned long arg)
{
	return -EIO;
}

static int bad_file_mmap(struct file *file, struct vm_area_struct *vma)
{
	return -EIO;
}

static int bad_file_open(struct inode *inode, struct file *filp)
{
	return -EIO;
}

static int bad_file_flush(struct file *file, fl_owner_t id)
{
	return -EIO;
}

static int bad_file_release(struct inode *inode, struct file *filp)
{
	return -EIO;
}

static int bad_file_fsync(struct file *file, struct dentry *dentry,
			int datasync)
{
	return -EIO;
}

static int bad_file_aio_fsync(struct kiocb *iocb, int datasync)
{
	return -EIO;
}

static int bad_file_fasync(int fd, struct file *filp, int on)
{
	return -EIO;
}

static int bad_file_lock(struct file *file, int cmd, struct file_lock *fl)
{
	return -EIO;
}

static ssize_t bad_file_sendpage(struct file *file, struct page *page,
			int off, size_t len, loff_t *pos, int more)
{
	return -EIO;
}

static unsigned long bad_file_get_unmapped_area(struct file *file,
				unsigned long addr, unsigned long len,
				unsigned long pgoff, unsigned long flags)
{
	return -EIO;
}

static int bad_file_check_flags(int flags)
{
	return -EIO;
}

static int bad_file_dir_notify(struct file *file, unsigned long arg)
{
	return -EIO;
}

static int bad_file_flock(struct file *filp, int cmd, struct file_lock *fl)
{
	return -EIO;
}

static ssize_t bad_file_splice_write(struct pipe_inode_info *pipe,
			struct file *out, loff_t *ppos, size_t len,
			unsigned int flags)
{
	return -EIO;
}

static ssize_t bad_file_splice_read(struct file *in, loff_t *ppos,
			struct pipe_inode_info *pipe, size_t len,
			unsigned int flags)
{
	return -EIO;
}

static const struct file_operations bad_file_ops =
{
	.llseek		= bad_file_llseek,
	.read		= bad_file_read,
	.write		= bad_file_write,
	.aio_read	= bad_file_aio_read,
	.aio_write	= bad_file_aio_write,
	.readdir	= bad_file_readdir,
	.poll		= bad_file_poll,
	.ioctl		= bad_file_ioctl,
	.unlocked_ioctl	= bad_file_unlocked_ioctl,
	.compat_ioctl	= bad_file_compat_ioctl,
	.mmap		= bad_file_mmap,
	.open		= bad_file_open,
	.flush		= bad_file_flush,
	.release	= bad_file_release,
	.fsync		= bad_file_fsync,
	.aio_fsync	= bad_file_aio_fsync,
	.fasync		= bad_file_fasync,
	.lock		= bad_file_lock,
	.sendpage	= bad_file_sendpage,
	.get_unmapped_area = bad_file_get_unmapped_area,
	.check_flags	= bad_file_check_flags,
	.dir_notify	= bad_file_dir_notify,
	.flock		= bad_file_flock,
	.splice_write	= bad_file_splice_write,
	.splice_read	= bad_file_splice_read,
};

static int bad_inode_create (struct inode *dir, struct dentry *dentry,
		int mode, struct nameidata *nd)
{
	return -EIO;
}

static struct dentry *bad_inode_lookup(struct inode *dir,
			struct dentry *dentry, struct nameidata *nd)
{
	return ERR_PTR(-EIO);
}

static int bad_inode_link (struct dentry *old_dentry, struct inode *dir,
		struct dentry *dentry)
{
	return -EIO;
}

static int bad_inode_unlink(struct inode *dir, struct dentry *dentry)
{
	return -EIO;
}

static int bad_inode_symlink (struct inode *dir, struct dentry *dentry,
		const char *symname)
{
	return -EIO;
}

static int bad_inode_mkdir(struct inode *dir, struct dentry *dentry,
			int mode)
{
	return -EIO;
}

static int bad_inode_rmdir (struct inode *dir, struct dentry *dentry)
{
	return -EIO;
}

static int bad_inode_mknod (struct inode *dir, struct dentry *dentry,
			int mode, dev_t rdev)
{
	return -EIO;
}

static int bad_inode_rename (struct inode *old_dir, struct dentry *old_dentry,
		struct inode *new_dir, struct dentry *new_dentry)
{
	return -EIO;
}

static int bad_inode_readlink(struct dentry *dentry, char __user *buffer,
		int buflen)
{
	return -EIO;
}

static int bad_inode_permission(struct inode *inode, int mask,
			struct nameidata *nd)
{
	return -EIO;
}

static int bad_inode_getattr(struct vfsmount *mnt, struct dentry *dentry,
			struct kstat *stat)
{
	return -EIO;
}

static int bad_inode_setattr(struct dentry *direntry, struct iattr *attrs)
{
	return -EIO;
}

static int bad_inode_setxattr(struct dentry *dentry, const char *name,
		const void *value, size_t size, int flags)
{
	return -EIO;
}

static ssize_t bad_inode_getxattr(struct dentry *dentry, const char *name,
			void *buffer, size_t size)
{
	return -EIO;
}

static ssize_t bad_inode_listxattr(struct dentry *dentry, char *buffer,
			size_t buffer_size)
{
	return -EIO;
}

static int bad_inode_removexattr(struct dentry *dentry, const char *name)
{
	return -EIO;
}

static const struct inode_operations bad_inode_ops =
{
	.create		= bad_inode_create,
	.lookup		= bad_inode_lookup,
	.link		= bad_inode_link,
	.unlink		= bad_inode_unlink,
	.symlink	= bad_inode_symlink,
	.mkdir		= bad_inode_mkdir,
	.rmdir		= bad_inode_rmdir,
	.mknod		= bad_inode_mknod,
	.rename		= bad_inode_rename,
	.readlink	= bad_inode_readlink,
	/* follow_link must be no-op, otherwise unmounting this inode
	   won't work */
	/* put_link returns void */
	/* truncate returns void */
	.permission	= bad_inode_permission,
	.getattr	= bad_inode_getattr,
	.setattr	= bad_inode_setattr,
	.setxattr	= bad_inode_setxattr,
	.getxattr	= bad_inode_getxattr,
	.listxattr	= bad_inode_listxattr,
	.removexattr	= bad_inode_removexattr,
	/* truncate_range returns void */
};


/*
 * 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);