1 files changed, 0 insertions, 419 deletions
diff --git a/fs/aufs/dbgaufs.c b/fs/aufs/dbgaufs.c
deleted file mode 100644
index 0aefb5ed8..000000000
--- a/fs/aufs/dbgaufs.c
+++ /dev/null
@@ -1,419 +0,0 @@
-/*
- * Copyright (C) 2005-2016 Junjiro R. Okajima
- */
-
-/*
- * debugfs interface
- */
-
-#include <linux/debugfs.h>
-#include "aufs.h"
-
-#ifndef CONFIG_SYSFS
-#error DEBUG_FS depends upon SYSFS
-#endif
-
-static struct dentry *dbgaufs;
-static const mode_t dbgaufs_mode = S_IRUSR | S_IRGRP | S_IROTH;
-
-/* 20 is max digits length of ulong 64 */
-struct dbgaufs_arg {
-	int n;
-	char a[20 * 4];
-};
-
-/*
- * common function for all XINO files
- */
-static int dbgaufs_xi_release(struct inode *inode __maybe_unused,
-			      struct file *file)
-{
-	kfree(file->private_data);
-	return 0;
-}
-
-static int dbgaufs_xi_open(struct file *xf, struct file *file, int do_fcnt)
-{
-	int err;
-	struct kstat st;
-	struct dbgaufs_arg *p;
-
-	err = -ENOMEM;
-	p = kmalloc(sizeof(*p), GFP_NOFS);
-	if (unlikely(!p))
-		goto out;
-
-	err = 0;
-	p->n = 0;
-	file->private_data = p;
-	if (!xf)
-		goto out;
-
-	err = vfs_getattr(&xf->f_path, &st);
-	if (!err) {
-		if (do_fcnt)
-			p->n = snprintf
-				(p->a, sizeof(p->a), "%ld, %llux%lu %lld\n",
-				 (long)file_count(xf), st.blocks, st.blksize,
-				 (long long)st.size);
-		else
-			p->n = snprintf(p->a, sizeof(p->a), "%llux%lu %lld\n",
-					st.blocks, st.blksize,
-					(long long)st.size);
-		AuDebugOn(p->n >= sizeof(p->a));
-	} else {
-		p->n = snprintf(p->a, sizeof(p->a), "err %d\n", err);
-		err = 0;
-	}
-
-out:
-	return err;
-
-}
-
-static ssize_t dbgaufs_xi_read(struct file *file, char __user *buf,
-			       size_t count, loff_t *ppos)
-{
-	struct dbgaufs_arg *p;
-
-	p = file->private_data;
-	return simple_read_from_buffer(buf, count, ppos, p->a, p->n);
-}
-
-/* ---------------------------------------------------------------------- */
-
-struct dbgaufs_plink_arg {
-	int n;
-	char a[];
-};
-
-static int dbgaufs_plink_release(struct inode *inode __maybe_unused,
-				 struct file *file)
-{
-	free_page((unsigned long)file->private_data);
-	return 0;
-}
-
-static int dbgaufs_plink_open(struct inode *inode, struct file *file)
-{
-	int err, i, limit;
-	unsigned long n, sum;
-	struct dbgaufs_plink_arg *p;
-	struct au_sbinfo *sbinfo;
-	struct super_block *sb;
-	struct au_sphlhead *sphl;
-
-	err = -ENOMEM;
-	p = (void *)get_zeroed_page(GFP_NOFS);
-	if (unlikely(!p))
-		goto out;
-
-	err = -EFBIG;
-	sbinfo = inode->i_private;
-	sb = sbinfo->si_sb;
-	si_noflush_read_lock(sb);
-	if (au_opt_test(au_mntflags(sb), PLINK)) {
-		limit = PAGE_SIZE - sizeof(p->n);
-
-		/* the number of buckets */
-		n = snprintf(p->a + p->n, limit, "%d\n", AuPlink_NHASH);
-		p->n += n;
-		limit -= n;
-
-		sum = 0;
-		for (i = 0, sphl = sbinfo->si_plink;
-		     i < AuPlink_NHASH;
-		     i++, sphl++) {
-			n = au_sphl_count(sphl);
-			sum += n;
-
-			n = snprintf(p->a + p->n, limit, "%lu ", n);
-			p->n += n;
-			limit -= n;
-			if (unlikely(limit <= 0))
-				goto out_free;
-		}
-		p->a[p->n - 1] = '\n';
-
-		/* the sum of plinks */
-		n = snprintf(p->a + p->n, limit, "%lu\n", sum);
-		p->n += n;
-		limit -= n;
-		if (unlikely(limit <= 0))
-			goto out_free;
-	} else {
-#define str "1\n0\n0\n"
-		p->n = sizeof(str) - 1;
-		strcpy(p->a, str);
-#undef str
-	}
-	si_read_unlock(sb);
-
-	err = 0;
-	file->private_data = p;
-	goto out; /* success */
-
-out_free:
-	free_page((unsigned long)p);
-out:
-	return err;
-}
-
-static ssize_t dbgaufs_plink_read(struct file *file, char __user *buf,
-				  size_t count, loff_t *ppos)
-{
-	struct dbgaufs_plink_arg *p;
-
-	p = file->private_data;
-	return simple_read_from_buffer(buf, count, ppos, p->a, p->n);
-}
-
-static const struct file_operations dbgaufs_plink_fop = {
-	.owner		= THIS_MODULE,
-	.open		= dbgaufs_plink_open,
-	.release	= dbgaufs_plink_release,
-	.read		= dbgaufs_plink_read
-};
-
-/* ---------------------------------------------------------------------- */
-
-static int dbgaufs_xib_open(struct inode *inode, struct file *file)
-{
-	int err;
-	struct au_sbinfo *sbinfo;
-	struct super_block *sb;
-
-	sbinfo = inode->i_private;
-	sb = sbinfo->si_sb;
-	si_noflush_read_lock(sb);
-	err = dbgaufs_xi_open(sbinfo->si_xib, file, /*do_fcnt*/0);
-	si_read_unlock(sb);
-	return err;
-}
-
-static const struct file_operations dbgaufs_xib_fop = {
-	.owner		= THIS_MODULE,
-	.open		= dbgaufs_xib_open,
-	.release	= dbgaufs_xi_release,
-	.read		= dbgaufs_xi_read
-};
-
-/* ---------------------------------------------------------------------- */
-
-#define DbgaufsXi_PREFIX "xi"
-
-static int dbgaufs_xino_open(struct inode *inode, struct file *file)
-{
-	int err;
-	long l;
-	struct au_sbinfo *sbinfo;
-	struct super_block *sb;
-	struct file *xf;
-	struct qstr *name;
-
-	err = -ENOENT;
-	xf = NULL;
-	name = &file->f_path.dentry->d_name;
-	if (unlikely(name->len < sizeof(DbgaufsXi_PREFIX)
-		     || memcmp(name->name, DbgaufsXi_PREFIX,
-			       sizeof(DbgaufsXi_PREFIX) - 1)))
-		goto out;
-	err = kstrtol(name->name + sizeof(DbgaufsXi_PREFIX) - 1, 10, &l);
-	if (unlikely(err))
-		goto out;
-
-	sbinfo = inode->i_private;
-	sb = sbinfo->si_sb;
-	si_noflush_read_lock(sb);
-	if (l <= au_sbend(sb)) {
-		xf = au_sbr(sb, (aufs_bindex_t)l)->br_xino.xi_file;
-		err = dbgaufs_xi_open(xf, file, /*do_fcnt*/1);
-	} else
-		err = -ENOENT;
-	si_read_unlock(sb);
-
-out:
-	return err;
-}
-
-static const struct file_operations dbgaufs_xino_fop = {
-	.owner		= THIS_MODULE,
-	.open		= dbgaufs_xino_open,
-	.release	= dbgaufs_xi_release,
-	.read		= dbgaufs_xi_read
-};
-
-void dbgaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex)
-{
-	aufs_bindex_t bend;
-	struct au_branch *br;
-	struct au_xino_file *xi;
-
-	if (!au_sbi(sb)->si_dbgaufs)
-		return;
-
-	bend = au_sbend(sb);
-	for (; bindex <= bend; bindex++) {
-		br = au_sbr(sb, bindex);
-		xi = &br->br_xino;
-		debugfs_remove(xi->xi_dbgaufs);
-		xi->xi_dbgaufs = NULL;
-	}
-}
-
-void dbgaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex)
-{
-	struct au_sbinfo *sbinfo;
-	struct dentry *parent;
-	struct au_branch *br;
-	struct au_xino_file *xi;
-	aufs_bindex_t bend;
-	char name[sizeof(DbgaufsXi_PREFIX) + 5]; /* "xi" bindex NULL */
-
-	sbinfo = au_sbi(sb);
-	parent = sbinfo->si_dbgaufs;
-	if (!parent)
-		return;
-
-	bend = au_sbend(sb);
-	for (; bindex <= bend; bindex++) {
-		snprintf(name, sizeof(name), DbgaufsXi_PREFIX "%d", bindex);
-		br = au_sbr(sb, bindex);
-		xi = &br->br_xino;
-		AuDebugOn(xi->xi_dbgaufs);
-		xi->xi_dbgaufs = debugfs_create_file(name, dbgaufs_mode, parent,
-						     sbinfo, &dbgaufs_xino_fop);
-		/* ignore an error */
-		if (unlikely(!xi->xi_dbgaufs))
-			AuWarn1("failed %s under debugfs\n", name);
-	}
-}
-
-/* ---------------------------------------------------------------------- */
-
-#ifdef CONFIG_AUFS_EXPORT
-static int dbgaufs_xigen_open(struct inode *inode, struct file *file)
-{
-	int err;
-	struct au_sbinfo *sbinfo;
-	struct super_block *sb;
-
-	sbinfo = inode->i_private;
-	sb = sbinfo->si_sb;
-	si_noflush_read_lock(sb);
-	err = dbgaufs_xi_open(sbinfo->si_xigen, file, /*do_fcnt*/0);
-	si_read_unlock(sb);
-	return err;
-}
-
-static const struct file_operations dbgaufs_xigen_fop = {
-	.owner		= THIS_MODULE,
-	.open		= dbgaufs_xigen_open,
-	.release	= dbgaufs_xi_release,
-	.read		= dbgaufs_xi_read
-};
-
-static int dbgaufs_xigen_init(struct au_sbinfo *sbinfo)
-{
-	int err;
-
-	/*
-	 * This function is a dynamic '__init' function actually,
-	 * so the tiny check for si_rwsem is unnecessary.
-	 */
-	/* AuRwMustWriteLock(&sbinfo->si_rwsem); */
-
-	err = -EIO;
-	sbinfo->si_dbgaufs_xigen = debugfs_create_file
-		("xigen", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo,
-		 &dbgaufs_xigen_fop);
-	if (sbinfo->si_dbgaufs_xigen)
-		err = 0;
-
-	return err;
-}
-#else
-static int dbgaufs_xigen_init(struct au_sbinfo *sbinfo)
-{
-	return 0;
-}
-#endif /* CONFIG_AUFS_EXPORT */
-
-/* ---------------------------------------------------------------------- */
-
-void dbgaufs_si_fin(struct au_sbinfo *sbinfo)
-{
-	/*
-	 * This function is a dynamic '__fin' function actually,
-	 * so the tiny check for si_rwsem is unnecessary.
-	 */
-	/* AuRwMustWriteLock(&sbinfo->si_rwsem); */
-
-	debugfs_remove_recursive(sbinfo->si_dbgaufs);
-	sbinfo->si_dbgaufs = NULL;
-	kobject_put(&sbinfo->si_kobj);
-}
-
-int dbgaufs_si_init(struct au_sbinfo *sbinfo)
-{
-	int err;
-	char name[SysaufsSiNameLen];
-
-	/*
-	 * This function is a dynamic '__init' function actually,
-	 * so the tiny check for si_rwsem is unnecessary.
-	 */
-	/* AuRwMustWriteLock(&sbinfo->si_rwsem); */
-
-	err = -ENOENT;
-	if (!dbgaufs) {
-		AuErr1("/debug/aufs is uninitialized\n");
-		goto out;
-	}
-
-	err = -EIO;
-	sysaufs_name(sbinfo, name);
-	sbinfo->si_dbgaufs = debugfs_create_dir(name, dbgaufs);
-	if (unlikely(!sbinfo->si_dbgaufs))
-		goto out;
-	kobject_get(&sbinfo->si_kobj);
-
-	sbinfo->si_dbgaufs_xib = debugfs_create_file
-		("xib", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo,
-		 &dbgaufs_xib_fop);
-	if (unlikely(!sbinfo->si_dbgaufs_xib))
-		goto out_dir;
-
-	sbinfo->si_dbgaufs_plink = debugfs_create_file
-		("plink", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo,
-		 &dbgaufs_plink_fop);
-	if (unlikely(!sbinfo->si_dbgaufs_plink))
-		goto out_dir;
-
-	err = dbgaufs_xigen_init(sbinfo);
-	if (!err)
-		goto out; /* success */
-
-out_dir:
-	dbgaufs_si_fin(sbinfo);
-out:
-	return err;
-}
-
-/* ---------------------------------------------------------------------- */
-
-void dbgaufs_fin(void)
-{
-	debugfs_remove(dbgaufs);
-}
-
-int __init dbgaufs_init(void)
-{
-	int err;
-
-	err = -EIO;
-	dbgaufs = debugfs_create_dir(AUFS_NAME, NULL);
-	if (dbgaufs)
-		err = 0;
-	return err;
-}