Requires <unistd.h>, <fcntl.h>. It is recommended that you contain the result as an arr_t or use a wrapper for that.

unix_read_file_old.c

char* unix_read_file(char* filenm, long unsigned int* len){
    int fd=open(filenm, O_RDONLY);
    char* buf=0x0;
    if(fd>0){
        struct stat stats;
        fstat(fd, &stats);
        buf=malloc(stats.st_size+1);
        if(buf){
            read(fd, buf, stats.st_size);
            buf[stats.st_size]=0x0;
        }
        
        close(fd);
    }
    return buf;
}