Speed names can now be given, allowing the use of "full-speed".

[breezed.git] / breezed.c

diff --git a/breezed.c b/breezed.c
index 5d57861..e8043df 100644 (file)
--- a/breezed.c
+++ b/breezed.c
@@ -3,7 +3,7 @@
 
    breezed is a fan speed control daemon for Linux computers.
 
-   Copyright (c) 2008, 2009 Francois Fleuret
+   Copyright (c) 2008, 2009, 2010 Francois Fleuret
    Written by Francois Fleuret <francois@fleuret.org>
 
    This file is part of breezed.
@@ -30,7 +30,7 @@
 #include <string.h>
 
 const int major_version_number = 1;
-const int minor_version_number = 3;
+const int minor_version_number = 4;
 
 const int buffer_size = 1024;
 
@@ -56,6 +56,7 @@ int file_fan_fd;
 
 int nb_temperature_thresholds;
 int *temperature_thresholds = 0;
+char **speed_names = 0;
 
 int nb_file_thermal = 0;
 char **file_thermal = 0;
@@ -63,6 +64,19 @@ int *file_thermal_fd = 0;
 
 char *configuration_file;
 
+/********************************************************************/
+
+/* malloc with error checking.  */
+
+void *safe_malloc(size_t n) {
+  void *p = malloc(n);
+  if (!p && n != 0) {
+    fprintf(stderr, "Can not allocate memory: %s\n", strerror(errno));
+    exit(EXIT_FAILURE);
+  }
+  return p;
+}
+
 /******************************************************************/
 
 char *next_word(char *buffer, char *r, int buffer_size) {
@@ -99,7 +113,7 @@ char *next_word(char *buffer, char *r, int buffer_size) {
 void set_fan_level(int fan_fd, int f, int max_fan_level) {
   char buffer[buffer_size];
   if(f < 0 || f > max_fan_level) f = max_fan_level;
-  sprintf(buffer, "level %d\n", f);
+  sprintf(buffer, "level %s\n", speed_names[f]);
   if(write(fan_fd, buffer, strlen(buffer)) < 0) {
     fprintf(stderr, "Error in setting the fan level (%s).\n",
             strerror(errno));
@@ -122,8 +136,8 @@ void define_thermal_files(char *definition) {
     nb_file_thermal++;
   }
 
-  file_thermal = (char **) malloc(nb_file_thermal * sizeof(char *));
-  file_thermal_fd = (int *) malloc(nb_file_thermal * sizeof(int));
+  file_thermal = safe_malloc(nb_file_thermal * sizeof(char *));
+  file_thermal_fd = safe_malloc(nb_file_thermal * sizeof(int));
   s = definition;
   int k = 0;
   while(s) {
@@ -143,7 +157,8 @@ void define_temperature_thresholds(char *definition) {
 
   nb_temperature_thresholds = 1;
 
-  char *s;
+  char *s, *u;
+
   s = definition;
   while(s) {
     s = next_word(token, s, buffer_size);
@@ -151,7 +166,10 @@ void define_temperature_thresholds(char *definition) {
   }
 
   temperature_thresholds =
-    (int *) malloc(nb_temperature_thresholds * sizeof(int));
+    safe_malloc(nb_temperature_thresholds * sizeof(int));
+
+  speed_names =
+    safe_malloc(nb_temperature_thresholds * sizeof(char *));
 
   temperature_thresholds[0] = -1;
 
@@ -159,7 +177,19 @@ void define_temperature_thresholds(char *definition) {
   int k = 1;
   while(s) {
     s = next_word(token, s, buffer_size);
-    temperature_thresholds[k] = atoi(token);
+    u = token;
+    while(*u && *u != ':') u++;
+    if(*u) {
+      *u = '\0';
+      temperature_thresholds[k] = atoi(token);
+      u++;
+      speed_names[k] = strdup(u);
+    } else {
+      temperature_thresholds[k] = atoi(token);
+      snprintf(token, buffer_size, "%d", k);
+      speed_names[k] = strdup(token);
+    }
+
     if(k > 0 &&
        temperature_thresholds[k] < temperature_thresholds[k-1]) {
       fprintf(stderr, "The temperature thresholds have to be increasing.\n");
@@ -472,8 +502,9 @@ Written by Francois Fleuret (francois@fleuret.org).\n",
     printf("file_fan %s\n", file_fan);
 
     for(t = 0; t < nb_temperature_thresholds; t++) {
-      printf("temperature_thresholds[%d] %d",
-             t, temperature_thresholds[t]);
+      printf("temperature_thresholds[%d] = %d speed_names[%d] = \"%s\"\n",
+             t, temperature_thresholds[t],
+             t, speed_names[t]);
     }
   }
 
@@ -584,7 +615,7 @@ Written by Francois Fleuret (francois@fleuret.org).\n",
       nb_rounds_since_last_change = 0;
       last_level = new_level;
       if(debug) {
-        printf("Temperature is %dC setting the fan level to %d.",
+        printf("Temperature is %dC setting the fan level to %d.\n",
                temperature, new_level);
       }
     }