1 files changed, 109 insertions, 0 deletions
diff --git a/fs/jfs/jfs_debug.c b/fs/jfs/jfs_debug.c
new file mode 100644
index 000000000..dd824d9b0
--- /dev/null
+++ b/fs/jfs/jfs_debug.c
@@ -0,0 +1,109 @@
+/*
+ *   Copyright (C) International Business Machines Corp., 2000-2004
+ *   Portions Copyright (C) Christoph Hellwig, 2001-2002
+ *
+ *   This program is free software;  you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+ *   the GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program;  if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/fs.h>
+#include <linux/ctype.h>
+#include <linux/module.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <asm/uaccess.h>
+#include "jfs_incore.h"
+#include "jfs_filsys.h"
+#include "jfs_debug.h"
+
+#ifdef PROC_FS_JFS /* see jfs_debug.h */
+
+static struct proc_dir_entry *base;
+#ifdef CONFIG_JFS_DEBUG
+static int jfs_loglevel_proc_show(struct seq_file *m, void *v)
+{
+	seq_printf(m, "%d\n", jfsloglevel);
+	return 0;
+}
+
+static int jfs_loglevel_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, jfs_loglevel_proc_show, NULL);
+}
+
+static ssize_t jfs_loglevel_proc_write(struct file *file,
+		const char __user *buffer, size_t count, loff_t *ppos)
+{
+	char c;
+
+	if (get_user(c, buffer))
+		return -EFAULT;
+
+	/* yes, I know this is an ASCIIism.  --hch */
+	if (c < '0' || c > '9')
+		return -EINVAL;
+	jfsloglevel = c - '0';
+	return count;
+}
+
+static const struct file_operations jfs_loglevel_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= jfs_loglevel_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+	.write		= jfs_loglevel_proc_write,
+};
+#endif
+
+static struct {
+	const char	*name;
+	const struct file_operations *proc_fops;
+} Entries[] = {
+#ifdef CONFIG_JFS_STATISTICS
+	{ "lmstats",	&jfs_lmstats_proc_fops, },
+	{ "txstats",	&jfs_txstats_proc_fops, },
+	{ "xtstat",	&jfs_xtstat_proc_fops, },
+	{ "mpstat",	&jfs_mpstat_proc_fops, },
+#endif
+#ifdef CONFIG_JFS_DEBUG
+	{ "TxAnchor",	&jfs_txanchor_proc_fops, },
+	{ "loglevel",	&jfs_loglevel_proc_fops }
+#endif
+};
+#define NPROCENT	ARRAY_SIZE(Entries)
+
+void jfs_proc_init(void)
+{
+	int i;
+
+	if (!(base = proc_mkdir("fs/jfs", NULL)))
+		return;
+
+	for (i = 0; i < NPROCENT; i++)
+		proc_create(Entries[i].name, 0, base, Entries[i].proc_fops);
+}
+
+void jfs_proc_clean(void)
+{
+	int i;
+
+	if (base) {
+		for (i = 0; i < NPROCENT; i++)
+			remove_proc_entry(Entries[i].name, base);
+		remove_proc_entry("fs/jfs", NULL);
+	}
+}
+
+#endif /* PROC_FS_JFS */