#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>

#define PATH "/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor"

int main(int argc, char** argv)
{
    FILE* stream;
    char* line_buf = NULL;
    int   line_cap = 0;
    int   line_len;

    stream = fopen(PATH, "w");
    if (stream == NULL) {
        perror("fopen");
        return EXIT_FAILURE;
    }

    line_len = getline(&line_buf, &line_cap, stdin);
    if (line_len < 0) {
        perror("getline");
        return EXIT_FAILURE;
    }

    if (fwrite(line_buf, line_len, 1, stream) != 1) {
        perror("fwrite");
        return EXIT_FAILURE;
    }

    if (fclose(stream) == EOF) {
        perror("fclose");
        return EXIT_FAILURE;
    }

    free(line_buf);

    return EXIT_SUCCESS;
}

/* vim: set ts=4 sts=4 sw=4 tw=80 et: */