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-rw-r--r--trayfreq_set.c160
1 files changed, 160 insertions, 0 deletions
diff --git a/trayfreq_set.c b/trayfreq_set.c
new file mode 100644
index 0000000..02b0eef
--- /dev/null
+++ b/trayfreq_set.c
@@ -0,0 +1,160 @@
+/************************************************************************
+ * This file is part of trayfreq-archlinux. *
+ * *
+ * trayfreq-archlinux 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 3 of the *
+ * License, or (at your option) any later version. *
+ * *
+ * trayfreq-archlinux 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 trayfreq-archlinux. If not, see *
+ * <http://www.gnu.org/licenses/>. *
+ ************************************************************************/
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <libintl.h>
+#include <locale.h>
+
+#include "getfreq.h"
+#include "getcore.h"
+#include "common.h"
+
+#define FILE_PATH_STRING_SIZE 100
+
+#define ARG_CORE 0x1
+#define ARG_GOV 0x2
+#define ARG_FREQ 0x4
+typedef struct {
+ char present;
+ char *core;
+ char *governor;
+ char *frequency;
+} argument_summary;
+
+char write_str_to_file(const char *file, const char *data, const char *core)
+{
+ FILE *fd;
+ char file_path[FILE_PATH_STRING_SIZE];
+
+ // Prepare file path
+ memset(file_path, '\0', sizeof(file_path));
+ sprintf(file_path, "/sys/devices/system/cpu/cpu%d/cpufreq/%s", atoi(core), file );
+
+ // Try to open file and write data to it
+ if ( (fd = fopen(file_path, "w")) != NULL )
+ {
+ debug("Writing '%s' to '%s'\n",data,file_path);
+ fprintf(fd, data);
+ fclose(fd);
+ return 1;
+ }
+
+ // Fallthrough: File couldn't be opened for writing
+ fprintf(stderr, _("FAILED: Couldn't open %s for writing\n") , file_path);
+ return 0;
+}
+
+
+#define set_freq_max(freq,core) write_str_to_file("scaling_max_freq",freq,core)
+#define set_freq_min(freq,core) write_str_to_file("scaling_min_freq",freq,core)
+#define set_speed(freq,core) write_str_to_file("scaling_setspeed",freq,core)
+#define set_gov(gov,core) write_str_to_file("scaling_governor",gov,core)
+
+void get_argument_summary(int argc, char **argv, argument_summary *argsum)
+{
+ int arg;
+
+ // Check for -{c,g,f} xyz
+ for ( arg = 1; arg < argc-1; arg+=2 )
+ {
+ // Can't have empty argument
+ if ( strlen(argv[arg+1]) != 0 )
+ {
+ if ( strcmp(argv[arg], "-c") == 0 )
+ {
+ // Found -c with an arg
+ debug("Found -c with arg '%s'\n",argv[arg+1]);
+ argsum->present |= ARG_CORE;
+ argsum->core = (char*)(argv[arg+1]);
+ continue;
+ }
+
+ if ( strcmp(argv[arg], "-f") == 0 )
+ {
+ // Found -f with an arg
+ debug("Found -f with arg '%s'\n",argv[arg+1]);
+ argsum->present |= ARG_FREQ;
+ argsum->frequency = (char*)(argv[arg+1]);
+ continue;
+ }
+
+ if ( strcmp(argv[arg], "-g") == 0 )
+ {
+ // Found -g with an arg
+ debug("Found -g with arg '%s'\n",argv[arg+1]);
+ argsum->present |= ARG_GOV;
+ argsum->governor = (char*)(argv[arg+1]);
+ //continue;
+ }
+ }
+ }
+}
+
+int main(int argc, char *argv[])
+{
+ setlocale(LC_ALL,"");
+ bindtextdomain("trayfreq",LOCALEDIR);
+ textdomain("trayfreq");
+
+ debug("Set gettext up\n");
+
+ gc_init();
+ gf_init();
+
+ argument_summary args;
+ memset(&args, 0, sizeof(args));
+
+ // If unusual number of args, give up now
+ if (argc == 5)
+ {
+
+ debug ("Checking UID\n");
+ if (getuid() != 0)
+ fprintf(stderr,"Warning: running as UID %d, not 0\n",getuid() );
+
+ get_argument_summary(argc, argv, &args);
+
+ debug("Correct number of command line arguments\n");
+ debug("-c: %s -g: %s -f: %s\n", (args.present | ARG_CORE )? "Yes":"No",
+ (args.present | ARG_GOV )? "Yes":"No",
+ (args.present | ARG_FREQ )? "Yes":"No" );
+ debug("Core: %s\n",args.core);
+ debug("Gov : %s\n",args.governor);
+ debug("Freq: %s\n",args.frequency);
+
+ if ( args.present == ( ARG_CORE | ARG_GOV ) )
+ {
+ debug("Changing governor\n");
+ return set_gov(args.governor , args.core);
+ }
+
+ if ( args.present == ( ARG_CORE | ARG_FREQ ) )
+ {
+ debug("Changing frequency\n");
+ return set_gov("userspace", args.core) | set_speed(args.frequency, args.core);
+ }
+ }
+ // Fall through to here if no valid argument combination
+ debug("Fell through, showing command usage\n");
+ fprintf(stderr, _("%s {-f frequency|-g governor} -c core\n"), argv[0] );
+ return 1;
+}