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/*
* XenoDomainBuilder, copyright (c) Boris Dragovic, bd240@cl.cam.ac.uk
* This code is released under terms and conditions of GNU GPL :).
* Usage: <executable> <mem_kb> <os image> <num_vifs>
*/
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include "hypervisor_defs.h"
#include "dom0_ops.h"
#include "dom0_defs.h"
#include "mem_defs.h"
/***********************************************************************/
static char *argv0 = "internal_domain_create";
static void ERROR (char *message)
{
fprintf (stderr, "%s: %s\n", argv0, message);
exit (-1);
}
static void PERROR (char *message)
{
fprintf (stderr, "%s: %s (%s)\n", argv0, message, sys_errlist[errno]);
exit (-1);
}
/***********************************************************************/
static dom0_newdomain_t * create_new_domain(long req_mem, char *name)
{
dom0_newdomain_t * dom_data;
char cmd_path[MAX_PATH];
char dom_id_path[MAX_PATH];
dom0_op_t dop;
int cmd_fd;
int id_fd;
/* open the /proc command interface */
sprintf(cmd_path, "%s%s%s%s", "/proc/", PROC_XENO_ROOT, "/", PROC_CMD);
cmd_fd = open(cmd_path, O_WRONLY);
if(cmd_fd < 0){
PERROR ("Could not open PROC_CMD interface");
return 0;
}
dop.cmd = DOM0_CREATEDOMAIN;
dop.u.newdomain.memory_kb = req_mem;
strncpy (dop.u.newdomain.name, name, MAX_DOMAIN_NAME - 1);
dop.u.newdomain.name[MAX_DOMAIN_NAME - 1] = 0;
write(cmd_fd, &dop, sizeof(dom0_op_t));
close(cmd_fd);
sprintf(dom_id_path, "%s%s%s%s", "/proc/", PROC_XENO_ROOT, "/",
PROC_DOM_DATA);
while((id_fd = open(dom_id_path, O_RDONLY)) < 0) continue;
dom_data = (dom0_newdomain_t *)malloc(sizeof(dom0_newdomain_t));
read(id_fd, dom_data, sizeof(dom0_newdomain_t));
close(id_fd);
return dom_data;
}
/***********************************************************************/
int main(int argc, char **argv)
{
dom0_newdomain_t * dom_data;
if (argv[0] != NULL)
{
argv0 = argv[0];
}
if(argc != 3)
{
fprintf (stderr, "Usage: %s <kbytes-mem> <domain-name>\n", argv0);
return -1;
}
if(!(dom_data = create_new_domain(atol(argv[1]), argv[2])))
{
return -1;
}
fprintf (stdout, "%d\n", dom_data -> domain);
return 0;
}
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