| #include "xen_backend.h" |
| #include "sysemu/blockdev.h" |
| |
| /* ------------------------------------------------------------- */ |
| |
| struct xs_dirs { |
| char *xs_dir; |
| QTAILQ_ENTRY(xs_dirs) list; |
| }; |
| static QTAILQ_HEAD(xs_dirs_head, xs_dirs) xs_cleanup = QTAILQ_HEAD_INITIALIZER(xs_cleanup); |
| |
| static void xen_config_cleanup_dir(char *dir) |
| { |
| struct xs_dirs *d; |
| |
| d = g_malloc(sizeof(*d)); |
| d->xs_dir = dir; |
| QTAILQ_INSERT_TAIL(&xs_cleanup, d, list); |
| } |
| |
| void xen_config_cleanup(void) |
| { |
| struct xs_dirs *d; |
| |
| QTAILQ_FOREACH(d, &xs_cleanup, list) { |
| xs_rm(xenstore, 0, d->xs_dir); |
| } |
| } |
| |
| /* ------------------------------------------------------------- */ |
| |
| static int xen_config_dev_mkdir(char *dev, int p) |
| { |
| struct xs_permissions perms[2] = {{ |
| .id = 0, /* set owner: dom0 */ |
| },{ |
| .id = xen_domid, |
| .perms = p, |
| }}; |
| |
| if (!xs_mkdir(xenstore, 0, dev)) { |
| xen_be_printf(NULL, 0, "xs_mkdir %s: failed\n", dev); |
| return -1; |
| } |
| xen_config_cleanup_dir(g_strdup(dev)); |
| |
| if (!xs_set_permissions(xenstore, 0, dev, perms, 2)) { |
| xen_be_printf(NULL, 0, "xs_set_permissions %s: failed\n", dev); |
| return -1; |
| } |
| return 0; |
| } |
| |
| static int xen_config_dev_dirs(const char *ftype, const char *btype, int vdev, |
| char *fe, char *be, int len) |
| { |
| char *dom; |
| |
| dom = xs_get_domain_path(xenstore, xen_domid); |
| snprintf(fe, len, "%s/device/%s/%d", dom, ftype, vdev); |
| free(dom); |
| |
| dom = xs_get_domain_path(xenstore, 0); |
| snprintf(be, len, "%s/backend/%s/%d/%d", dom, btype, xen_domid, vdev); |
| free(dom); |
| |
| xen_config_dev_mkdir(fe, XS_PERM_READ | XS_PERM_WRITE); |
| xen_config_dev_mkdir(be, XS_PERM_READ); |
| return 0; |
| } |
| |
| static int xen_config_dev_all(char *fe, char *be) |
| { |
| /* frontend */ |
| if (xen_protocol) |
| xenstore_write_str(fe, "protocol", xen_protocol); |
| |
| xenstore_write_int(fe, "state", XenbusStateInitialising); |
| xenstore_write_int(fe, "backend-id", 0); |
| xenstore_write_str(fe, "backend", be); |
| |
| /* backend */ |
| xenstore_write_str(be, "domain", qemu_name ? qemu_name : "no-name"); |
| xenstore_write_int(be, "online", 1); |
| xenstore_write_int(be, "state", XenbusStateInitialising); |
| xenstore_write_int(be, "frontend-id", xen_domid); |
| xenstore_write_str(be, "frontend", fe); |
| |
| return 0; |
| } |
| |
| /* ------------------------------------------------------------- */ |
| |
| int xen_config_dev_blk(DriveInfo *disk) |
| { |
| char fe[256], be[256], device_name[32]; |
| int vdev = 202 * 256 + 16 * disk->unit; |
| int cdrom = disk->media_cd; |
| const char *devtype = cdrom ? "cdrom" : "disk"; |
| const char *mode = cdrom ? "r" : "w"; |
| const char *filename = qemu_opt_get(disk->opts, "file"); |
| |
| snprintf(device_name, sizeof(device_name), "xvd%c", 'a' + disk->unit); |
| xen_be_printf(NULL, 1, "config disk %d [%s]: %s\n", |
| disk->unit, device_name, filename); |
| xen_config_dev_dirs("vbd", "qdisk", vdev, fe, be, sizeof(fe)); |
| |
| /* frontend */ |
| xenstore_write_int(fe, "virtual-device", vdev); |
| xenstore_write_str(fe, "device-type", devtype); |
| |
| /* backend */ |
| xenstore_write_str(be, "dev", device_name); |
| xenstore_write_str(be, "type", "file"); |
| xenstore_write_str(be, "params", filename); |
| xenstore_write_str(be, "mode", mode); |
| |
| /* common stuff */ |
| return xen_config_dev_all(fe, be); |
| } |
| |
| int xen_config_dev_nic(NICInfo *nic) |
| { |
| char fe[256], be[256]; |
| char mac[20]; |
| int vlan_id = -1; |
| |
| net_hub_id_for_client(nic->netdev, &vlan_id); |
| snprintf(mac, sizeof(mac), "%02x:%02x:%02x:%02x:%02x:%02x", |
| nic->macaddr.a[0], nic->macaddr.a[1], nic->macaddr.a[2], |
| nic->macaddr.a[3], nic->macaddr.a[4], nic->macaddr.a[5]); |
| xen_be_printf(NULL, 1, "config nic %d: mac=\"%s\"\n", vlan_id, mac); |
| xen_config_dev_dirs("vif", "qnic", vlan_id, fe, be, sizeof(fe)); |
| |
| /* frontend */ |
| xenstore_write_int(fe, "handle", vlan_id); |
| xenstore_write_str(fe, "mac", mac); |
| |
| /* backend */ |
| xenstore_write_int(be, "handle", vlan_id); |
| xenstore_write_str(be, "mac", mac); |
| |
| /* common stuff */ |
| return xen_config_dev_all(fe, be); |
| } |
| |
| int xen_config_dev_vfb(int vdev, const char *type) |
| { |
| char fe[256], be[256]; |
| |
| xen_config_dev_dirs("vfb", "vfb", vdev, fe, be, sizeof(fe)); |
| |
| /* backend */ |
| xenstore_write_str(be, "type", type); |
| |
| /* common stuff */ |
| return xen_config_dev_all(fe, be); |
| } |
| |
| int xen_config_dev_vkbd(int vdev) |
| { |
| char fe[256], be[256]; |
| |
| xen_config_dev_dirs("vkbd", "vkbd", vdev, fe, be, sizeof(fe)); |
| return xen_config_dev_all(fe, be); |
| } |
| |
| int xen_config_dev_console(int vdev) |
| { |
| char fe[256], be[256]; |
| |
| xen_config_dev_dirs("console", "console", vdev, fe, be, sizeof(fe)); |
| return xen_config_dev_all(fe, be); |
| } |