proc.c revision 8e81f184d9fc3c607a2f0b236d765eb348fbd845
1/* 2 module/proc.c 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 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 21 22*/ 23 24/* 25 This is some serious bloatware. 26 27 Taken from Dave A.'s PCL-711 driver, 'cuz I thought it 28 was cool. 29*/ 30 31#define __NO_VERSION__ 32#include "comedidev.h" 33#include <linux/proc_fs.h> 34/* #include <linux/string.h> */ 35 36extern struct comedi_driver *comedi_drivers; 37 38int comedi_read_procmem(char *buf, char **start, off_t offset, int len, 39 int *eof, void *data) 40{ 41 int i; 42 int devices_q = 0; 43 int l = 0; 44 struct comedi_driver *driv; 45 46 l += sprintf(buf + l, 47 "comedi version " COMEDI_RELEASE "\n" 48 "format string: %s\n", 49 "\"%2d: %-20s %-20s %4d\", i, " 50 "driver_name, board_name, n_subdevices"); 51 52 for (i = 0; i < COMEDI_NUM_BOARD_MINORS; i++) { 53 struct comedi_device_file_info *dev_file_info = 54 comedi_get_device_file_info(i); 55 struct comedi_device *dev; 56 57 if (dev_file_info == NULL) 58 continue; 59 dev = dev_file_info->device; 60 61 if (dev->attached) { 62 devices_q = 1; 63 l += sprintf(buf + l, "%2d: %-20s %-20s %4d\n", 64 i, 65 dev->driver->driver_name, 66 dev->board_name, dev->n_subdevices); 67 } 68 } 69 if (!devices_q) 70 l += sprintf(buf + l, "no devices\n"); 71 72 for (driv = comedi_drivers; driv; driv = driv->next) { 73 l += sprintf(buf + l, "%s:\n", driv->driver_name); 74 for (i = 0; i < driv->num_names; i++) { 75 l += sprintf(buf + l, " %s\n", 76 *(char **)((char *)driv->board_name + 77 i * driv->offset)); 78 } 79 if (!driv->num_names) 80 l += sprintf(buf + l, " %s\n", driv->driver_name); 81 } 82 83 return l; 84} 85 86#ifdef CONFIG_PROC_FS 87void comedi_proc_init(void) 88{ 89 struct proc_dir_entry *comedi_proc; 90 91 comedi_proc = create_proc_entry("comedi", S_IFREG | S_IRUGO, 0); 92 if (comedi_proc) 93 comedi_proc->read_proc = comedi_read_procmem; 94} 95 96void comedi_proc_cleanup(void) 97{ 98 remove_proc_entry("comedi", 0); 99} 100#endif 101