cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

proc.c (1772B)

      1// SPDX-License-Identifier: GPL-2.0+
      2/*
      3 * /proc interface for comedi
      4 *
      5 * COMEDI - Linux Control and Measurement Device Interface
      6 * Copyright (C) 1998 David A. Schleef <ds@schleef.org>
      7 */
      8
      9/*
     10 * This is some serious bloatware.
     11 *
     12 * Taken from Dave A.'s PCL-711 driver, 'cuz I thought it
     13 * was cool.
     14 */
     15
     16#include <linux/comedi/comedidev.h>
     17#include "comedi_internal.h"
     18#include <linux/proc_fs.h>
     19#include <linux/seq_file.h>
     20
     21static int comedi_read(struct seq_file *m, void *v)
     22{
     23	int i;
     24	int devices_q = 0;
     25	struct comedi_driver *driv;
     26
     27	seq_printf(m, "comedi version " COMEDI_RELEASE "\nformat string: %s\n",
     28		   "\"%2d: %-20s %-20s %4d\", i, driver_name, board_name, n_subdevices");
     29
     30	for (i = 0; i < COMEDI_NUM_BOARD_MINORS; i++) {
     31		struct comedi_device *dev = comedi_dev_get_from_minor(i);
     32
     33		if (!dev)
     34			continue;
     35
     36		down_read(&dev->attach_lock);
     37		if (dev->attached) {
     38			devices_q = 1;
     39			seq_printf(m, "%2d: %-20s %-20s %4d\n",
     40				   i, dev->driver->driver_name,
     41				   dev->board_name, dev->n_subdevices);
     42		}
     43		up_read(&dev->attach_lock);
     44		comedi_dev_put(dev);
     45	}
     46	if (!devices_q)
     47		seq_puts(m, "no devices\n");
     48
     49	mutex_lock(&comedi_drivers_list_lock);
     50	for (driv = comedi_drivers; driv; driv = driv->next) {
     51		seq_printf(m, "%s:\n", driv->driver_name);
     52		for (i = 0; i < driv->num_names; i++)
     53			seq_printf(m, " %s\n",
     54				   *(char **)((char *)driv->board_name +
     55					      i * driv->offset));
     56
     57		if (!driv->num_names)
     58			seq_printf(m, " %s\n", driv->driver_name);
     59	}
     60	mutex_unlock(&comedi_drivers_list_lock);
     61
     62	return 0;
     63}
     64
     65void __init comedi_proc_init(void)
     66{
     67	if (!proc_create_single("comedi", 0444, NULL, comedi_read))
     68		pr_warn("comedi: unable to create proc entry\n");
     69}
     70
     71void comedi_proc_cleanup(void)
     72{
     73	remove_proc_entry("comedi", NULL);
     74}