145 lines
3.3 KiB
C
145 lines
3.3 KiB
C
/*
|
|
* 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 <asm/uaccess.h>
|
|
#include "jfs_incore.h"
|
|
#include "jfs_filsys.h"
|
|
#include "jfs_debug.h"
|
|
|
|
#ifdef CONFIG_JFS_DEBUG
|
|
void dump_mem(char *label, void *data, int length)
|
|
{
|
|
int i, j;
|
|
int *intptr = data;
|
|
char *charptr = data;
|
|
char buf[10], line[80];
|
|
|
|
printk("%s: dump of %d bytes of data at 0x%p\n\n", label, length,
|
|
data);
|
|
for (i = 0; i < length; i += 16) {
|
|
line[0] = 0;
|
|
for (j = 0; (j < 4) && (i + j * 4 < length); j++) {
|
|
sprintf(buf, " %08x", intptr[i / 4 + j]);
|
|
strcat(line, buf);
|
|
}
|
|
buf[0] = ' ';
|
|
buf[2] = 0;
|
|
for (j = 0; (j < 16) && (i + j < length); j++) {
|
|
buf[1] =
|
|
isprint(charptr[i + j]) ? charptr[i + j] : '.';
|
|
strcat(line, buf);
|
|
}
|
|
printk("%s\n", line);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef PROC_FS_JFS /* see jfs_debug.h */
|
|
|
|
static struct proc_dir_entry *base;
|
|
#ifdef CONFIG_JFS_DEBUG
|
|
static int loglevel_read(char *page, char **start, off_t off,
|
|
int count, int *eof, void *data)
|
|
{
|
|
int len;
|
|
|
|
len = sprintf(page, "%d\n", jfsloglevel);
|
|
|
|
len -= off;
|
|
*start = page + off;
|
|
|
|
if (len > count)
|
|
len = count;
|
|
else
|
|
*eof = 1;
|
|
|
|
if (len < 0)
|
|
len = 0;
|
|
|
|
return len;
|
|
}
|
|
|
|
static int loglevel_write(struct file *file, const char __user *buffer,
|
|
unsigned long count, void *data)
|
|
{
|
|
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;
|
|
}
|
|
#endif
|
|
|
|
static struct {
|
|
const char *name;
|
|
read_proc_t *read_fn;
|
|
write_proc_t *write_fn;
|
|
} Entries[] = {
|
|
#ifdef CONFIG_JFS_STATISTICS
|
|
{ "lmstats", jfs_lmstats_read, },
|
|
{ "txstats", jfs_txstats_read, },
|
|
{ "xtstat", jfs_xtstat_read, },
|
|
{ "mpstat", jfs_mpstat_read, },
|
|
#endif
|
|
#ifdef CONFIG_JFS_DEBUG
|
|
{ "TxAnchor", jfs_txanchor_read, },
|
|
{ "loglevel", loglevel_read, loglevel_write }
|
|
#endif
|
|
};
|
|
#define NPROCENT ARRAY_SIZE(Entries)
|
|
|
|
void jfs_proc_init(void)
|
|
{
|
|
int i;
|
|
|
|
if (!(base = proc_mkdir("jfs", proc_root_fs)))
|
|
return;
|
|
base->owner = THIS_MODULE;
|
|
|
|
for (i = 0; i < NPROCENT; i++) {
|
|
struct proc_dir_entry *p;
|
|
if ((p = create_proc_entry(Entries[i].name, 0, base))) {
|
|
p->read_proc = Entries[i].read_fn;
|
|
p->write_proc = Entries[i].write_fn;
|
|
}
|
|
}
|
|
}
|
|
|
|
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("jfs", proc_root_fs);
|
|
}
|
|
}
|
|
|
|
#endif /* PROC_FS_JFS */
|