hw/xen/xen_devconfig.c

   1 #include "qemu/osdep.h"
   2 #include "hw/xen/xen-legacy-backend.h"
   3 #include "qemu/option.h"
   4 #include "sysemu/blockdev.h"
   5 #include "sysemu/sysemu.h"
   6
   7 /* ------------------------------------------------------------- */
   8
   9 static int xen_config_dev_dirs(const char *ftype, const char *btype, int vdev,
  10                                char *fe, char *be, int len)
  11 {
  12     char *dom;
  13
  14     dom = qemu_xen_xs_get_domain_path(xenstore, xen_domid);
  15     snprintf(fe, len, "%s/device/%s/%d", dom, ftype, vdev);
  16     free(dom);
  17
  18     dom = qemu_xen_xs_get_domain_path(xenstore, 0);
  19     snprintf(be, len, "%s/backend/%s/%d/%d", dom, btype, xen_domid, vdev);
  20     free(dom);
  21
  22     xenstore_mkdir(fe, XS_PERM_READ | XS_PERM_WRITE);
  23     xenstore_mkdir(be, XS_PERM_READ);
  24     return 0;
  25 }
  26
  27 static int xen_config_dev_all(char *fe, char *be)
  28 {
  29     /* frontend */
  30     if (xen_protocol)
  31         xenstore_write_str(fe, "protocol", xen_protocol);
  32
  33     xenstore_write_int(fe, "state",           XenbusStateInitialising);
  34     xenstore_write_int(fe, "backend-id",      0);
  35     xenstore_write_str(fe, "backend",         be);
  36
  37     /* backend */
  38     xenstore_write_str(be, "domain",          qemu_name ? qemu_name : "no-name");
  39     xenstore_write_int(be, "online",          1);
  40     xenstore_write_int(be, "state",           XenbusStateInitialising);
  41     xenstore_write_int(be, "frontend-id",     xen_domid);
  42     xenstore_write_str(be, "frontend",        fe);
  43
  44     return 0;
  45 }
  46
  47 /* ------------------------------------------------------------- */
  48
  49 int xen_config_dev_vfb(int vdev, const char *type)
  50 {
  51     char fe[256], be[256];
  52
  53     xen_config_dev_dirs("vfb", "vfb", vdev, fe, be, sizeof(fe));
  54
  55     /* backend */
  56     xenstore_write_str(be, "type",  type);
  57
  58     /* common stuff */
  59     return xen_config_dev_all(fe, be);
  60 }
  61
  62 int xen_config_dev_vkbd(int vdev)
  63 {
  64     char fe[256], be[256];
  65
  66     xen_config_dev_dirs("vkbd", "vkbd", vdev, fe, be, sizeof(fe));
  67     return xen_config_dev_all(fe, be);
  68 }