ideas/execve/execve.c

   1 #include "ruby.h"
   2
   3 static VALUE mKernel;
   4 void Init_execve();
   5 VALUE method_execve(VALUE self, VALUE cmd, VALUE env);
   6
   7 void Init_execve() {
   8   mKernel = rb_const_get(rb_cObject, rb_intern("Kernel"));
   9   rb_define_method(mKernel, "execve", method_execve, 2);
  10 }
  11
  12 VALUE method_execve(VALUE self, VALUE r_cmd, VALUE r_env) {
  13   char *shell = (char *)dln_find_exe("sh", 0);
  14   char *arg[] = { "sh", "-c", StringValuePtr(r_cmd), (char *)0 };
  15
  16   struct RArray *env_array;
  17   env_array = RARRAY(r_env);
  18   char *env[env_array->len + 1];
  19
  20   int i;
  21   for(i = 0; i < env_array->len; i++) {
  22     env[i] = StringValuePtr(env_array->ptr[i]);
  23   }
  24
  25   env[env_array->len] = (char *)0;
  26
  27   execve(shell, arg, env);
  28   return Qnil;
  29 }