3 * Copyright (C) 2007 Peter Holik
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * Peter Holik <peter at holik.at>
26 #include "configfile.h"
29 # error "No applicable input method."
35 * (Module-)Global variables
37 static const char *config_keys[] =
42 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
44 static unsigned int *irq_list;
45 static unsigned int irq_list_num;
49 * 0 => default is to collect selected irqs
50 * 1 => ignore selcted irqs
52 static int irq_list_action;
54 static int irq_config (const char *key, const char *value)
56 if (strcasecmp (key, "Irq") == 0)
62 temp = (unsigned int *) realloc (irq_list, (irq_list_num + 1) * sizeof (unsigned int *));
65 fprintf (stderr, "irq plugin: Cannot allocate more memory.\n");
66 ERROR ("irq plugin: Cannot allocate more memory.");
71 /* Clear errno, because we need it to see if an error occured. */
74 irq = strtol(value, &endptr, 10);
75 if ((endptr == value) || (errno != 0))
77 fprintf (stderr, "irq plugin: Irq value is not a "
78 "number: `%s'\n", value);
79 ERROR ("irq plugin: Irq value is not a "
80 "number: `%s'", value);
83 irq_list[irq_list_num] = irq;
86 else if (strcasecmp (key, "IgnoreSelected") == 0)
88 if ((strcasecmp (value, "True") == 0)
89 || (strcasecmp (value, "Yes") == 0)
90 || (strcasecmp (value, "On") == 0))
103 * Check if this interface/instance should be ignored. This is called from
104 * both, `submit' and `write' to give client and server the ability to
105 * ignore certain stuff..
107 static int check_ignore_irq (const unsigned int irq)
111 if (irq_list_num < 1)
114 for (i = 0; (unsigned int)i < irq_list_num; i++)
115 if (irq == irq_list[i])
116 return (irq_list_action);
118 return (1 - irq_list_action);
121 static void irq_submit (unsigned int irq, counter_t value)
124 value_list_t vl = VALUE_LIST_INIT;
127 if (check_ignore_irq (irq))
130 values[0].counter = value;
134 vl.time = time (NULL);
135 strcpy (vl.host, hostname_g);
136 strcpy (vl.plugin, "irq");
137 strcpy (vl.type, "irq");
139 status = snprintf (vl.type_instance, sizeof (vl.type_instance),
141 if ((status < 1) || ((unsigned int)status >= sizeof (vl.type_instance)))
144 plugin_dispatch_values (&vl);
145 } /* void irq_submit */
147 static int irq_read (void)
153 char buffer[BUFSIZE];
155 unsigned int irq_value;
163 if ((fh = fopen ("/proc/interrupts", "r")) == NULL)
166 WARNING ("irq plugin: fopen (/proc/interrupts): %s",
167 sstrerror (errno, errbuf, sizeof (errbuf)));
170 while (fgets (buffer, BUFSIZE, fh) != NULL)
172 fields_num = strsplit (buffer, fields, 64);
176 errno = 0; /* To distinguish success/failure after call */
177 irq = strtol (fields[0], &endptr, 10);
179 if ((endptr == fields[0]) || (errno != 0) || (*endptr != ':'))
183 for (i = 1; i < fields_num; i++)
186 value = strtol (fields[i], &endptr, 10);
188 if ((*endptr != '\0') || (errno != 0))
194 irq_submit (irq, irq_value);
201 void module_register (void)
203 plugin_register_config ("irq", irq_config,
204 config_keys, config_keys_num);
205 plugin_register_read ("irq", irq_read);
206 } /* void module_register */