xen-project/xen
1
0 Fork 1
mirror of https://github.com/xen-project/xen.git synced 2026-10-29 18:50:05 +01:00
Code Issues Activity
Files
7b289f9e42acbea5058fe5ce916affcdfabc4e66
xen/tools/libxl/libxl.c
T
Stefano Stabellini 7b289f9e42 libxl: create xenstore backend for empty disks 
We still need to create the vbd backend in xenstore even if the disk
format is DISK_FORMAT_EMPTY.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
2011-02-17 19:49:57 +00:00

3202 lines
98 KiB
C
Raw Blame History

/*
* Copyright (C) 2009 Citrix Ltd.
* Author Vincent Hanquez <vincent.hanquez@eu.citrix.com>
* Author Stefano Stabellini <stefano.stabellini@eu.citrix.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; version 2.1 only. with the special
* exception on linking described in file LICENSE.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*/
#include "libxl_osdeps.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/select.h>
#include <sys/wait.h>
#include <sys/time.h>
#include <signal.h>
#include <unistd.h> /* for write, unlink and close */
#include <stdint.h>
#include <inttypes.h>
#include <assert.h>
#include "libxl.h"
#include "libxl_utils.h"
#include "libxl_internal.h"
#include "flexarray.h"
#define PAGE_TO_MEMKB(pages) ((pages) * 4)
int libxl_ctx_init(libxl_ctx *ctx, int version, xentoollog_logger *lg)
{
struct stat stat_buf;
if (version != LIBXL_VERSION)
return ERROR_VERSION;
memset(ctx, 0, sizeof(libxl_ctx));
ctx->lg = lg;
memset(&ctx->version_info, 0, sizeof(libxl_version_info));
if ( stat(XENSTORE_PID_FILE, &stat_buf) != 0 ) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "Is xenstore daemon running?\n"
"failed to stat %s", XENSTORE_PID_FILE);
return ERROR_FAIL;
}
ctx->xch = xc_interface_open(lg,lg,0);
if (!ctx->xch) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, errno,
"cannot open libxc handle");
return ERROR_FAIL;
}
ctx->xsh = xs_daemon_open();
if (!ctx->xsh)
ctx->xsh = xs_domain_open();
if (!ctx->xsh) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, errno,
"cannot connect to xenstore");
xc_interface_close(ctx->xch);
return ERROR_FAIL;
}
return 0;
}
int libxl_ctx_free(libxl_ctx *ctx)
{
if (ctx->xch) xc_interface_close(ctx->xch);
libxl_version_info_destroy(&ctx->version_info);
if (ctx->xsh) xs_daemon_close(ctx->xsh);
return 0;
}
void libxl_string_list_destroy(libxl_string_list *psl)
{
int i;
libxl_string_list sl = *psl;
if (!sl)
return;
for (i = 0; sl[i] != NULL; i++)
free(sl[i]);
free(sl);
}
void libxl_key_value_list_destroy(libxl_key_value_list *pkvl)
{
int i;
libxl_key_value_list kvl = *pkvl;
if (!kvl)
return;
for (i = 0; kvl[i] != NULL; i += 2) {
free(kvl[i]);
if (kvl[i + 1])
free(kvl[i + 1]);
}
free(kvl);
}
/******************************************************************************/
int libxl_domain_rename(libxl_ctx *ctx, uint32_t domid,
const char *old_name, const char *new_name,
xs_transaction_t trans)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
char *dom_path = 0;
const char *name_path;
char *got_old_name;
unsigned int got_old_len;
xs_transaction_t our_trans = 0;
int rc;
dom_path = libxl__xs_get_dompath(&gc, domid);
if (!dom_path) goto x_nomem;
name_path= libxl__sprintf(&gc, "%s/name", dom_path);
if (!name_path) goto x_nomem;
retry_transaction:
if (!trans) {
trans = our_trans = xs_transaction_start(ctx->xsh);
if (!our_trans) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, errno,
"create xs transaction for domain (re)name");
goto x_fail;
}
}
if (new_name[0]) {
/* nonempty names must be unique */
uint32_t domid_e;
rc = libxl_name_to_domid(ctx, new_name, &domid_e);
if (rc == ERROR_INVAL) {
/* no such domain, good */
} else if (rc != 0) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "unexpected error"
"checking for existing domain");
goto x_rc;
} else if (domid_e == domid) {
/* domain already has this name, ok (but we do still
* need the rest of the code as we may need to check
* old_name, for example). */
} else {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "domain with name \"%s\""
" already exists.", new_name);
rc = ERROR_INVAL;
goto x_rc;
}
}
if (old_name) {
got_old_name = xs_read(ctx->xsh, trans, name_path, &got_old_len);
if (!got_old_name) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, errno, "check old name"
" for domain %"PRIu32" allegedly named `%s'",
domid, old_name);
goto x_fail;
}
if (strcmp(old_name, got_old_name)) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "domain %"PRIu32" allegedly named "
"`%s' is actually named `%s' - racing ?",
domid, old_name, got_old_name);
free(got_old_name);
goto x_fail;
}
free(got_old_name);
}
if (!xs_write(ctx->xsh, trans, name_path,
new_name, strlen(new_name))) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "failed to write new name `%s'"
" for domain %"PRIu32" previously named `%s'",
new_name, domid, old_name);
goto x_fail;
}
if (our_trans) {
if (!xs_transaction_end(ctx->xsh, our_trans, 0)) {
trans = our_trans = 0;
if (errno != EAGAIN) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "failed to commit new name `%s'"
" for domain %"PRIu32" previously named `%s'",
new_name, domid, old_name);
goto x_fail;
}
LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "need to retry rename transaction"
" for domain %"PRIu32" (name_path=\"%s\", new_name=\"%s\")",
domid, name_path, new_name);
goto retry_transaction;
}
our_trans = 0;
}
rc = 0;
x_rc:
if (our_trans) xs_transaction_end(ctx->xsh, our_trans, 1);
libxl__free_all(&gc);
return rc;
x_fail: rc = ERROR_FAIL; goto x_rc;
x_nomem: rc = ERROR_NOMEM; goto x_rc;
}
int libxl_domain_resume(libxl_ctx *ctx, uint32_t domid)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
int rc = 0;
if (libxl__domain_is_hvm(ctx, domid)) {
LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "Called domain_resume on "
"non-cooperative hvm domain %u", domid);
rc = ERROR_NI;
goto out;
}
if (xc_domain_resume(ctx->xch, domid, 0)) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"xc_domain_resume failed for domain %u",
domid);
rc = ERROR_FAIL;
goto out;
}
if (!xs_resume_domain(ctx->xsh, domid)) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"xs_resume_domain failed for domain %u",
domid);
rc = ERROR_FAIL;
}
out:
libxl__free_all(&gc);
return 0;
}
/*
* Preserves a domain but rewrites xenstore etc to make it unique so
* that the domain can be restarted.
*
* Does not modify info so that it may be reused.
*/
int libxl_domain_preserve(libxl_ctx *ctx, uint32_t domid,
libxl_domain_create_info *info, const char *name_suffix, libxl_uuid new_uuid)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
struct xs_permissions roperm[2];
xs_transaction_t t;
char *preserved_name;
char *uuid_string;
char *vm_path;
char *dom_path;
int rc;
preserved_name = libxl__sprintf(&gc, "%s%s", info->name, name_suffix);
if (!preserved_name) {
libxl__free_all(&gc);
return ERROR_NOMEM;
}
uuid_string = libxl__uuid2string(&gc, new_uuid);
if (!uuid_string) {
libxl__free_all(&gc);
return ERROR_NOMEM;
}
dom_path = libxl__xs_get_dompath(&gc, domid);
if (!dom_path) {
libxl__free_all(&gc);
return ERROR_FAIL;
}
vm_path = libxl__sprintf(&gc, "/vm/%s", uuid_string);
if (!vm_path) {
libxl__free_all(&gc);
return ERROR_FAIL;
}
roperm[0].id = 0;
roperm[0].perms = XS_PERM_NONE;
roperm[1].id = domid;
roperm[1].perms = XS_PERM_READ;
retry_transaction:
t = xs_transaction_start(ctx->xsh);
xs_rm(ctx->xsh, t, vm_path);
xs_mkdir(ctx->xsh, t, vm_path);
xs_set_permissions(ctx->xsh, t, vm_path, roperm, ARRAY_SIZE(roperm));
xs_write(ctx->xsh, t, libxl__sprintf(&gc, "%s/vm", dom_path), vm_path, strlen(vm_path));
rc = libxl_domain_rename(ctx, domid, info->name, preserved_name, t);
if (rc) {
libxl__free_all(&gc);
return rc;
}
xs_write(ctx->xsh, t, libxl__sprintf(&gc, "%s/uuid", vm_path), uuid_string, strlen(uuid_string));
if (!xs_transaction_end(ctx->xsh, t, 0))
if (errno == EAGAIN)
goto retry_transaction;
libxl__free_all(&gc);
return 0;
}
static void xcinfo2xlinfo(const xc_domaininfo_t *xcinfo,
libxl_dominfo *xlinfo)
{
memcpy(&(xlinfo->uuid), xcinfo->handle, sizeof(xen_domain_handle_t));
xlinfo->domid = xcinfo->domain;
xlinfo->dying = !!(xcinfo->flags&XEN_DOMINF_dying);
xlinfo->shutdown = !!(xcinfo->flags&XEN_DOMINF_shutdown);
xlinfo->paused = !!(xcinfo->flags&XEN_DOMINF_paused);
xlinfo->blocked = !!(xcinfo->flags&XEN_DOMINF_blocked);
xlinfo->running = !!(xcinfo->flags&XEN_DOMINF_running);
if (xlinfo->shutdown || xlinfo->dying)
xlinfo->shutdown_reason = (xcinfo->flags>>XEN_DOMINF_shutdownshift) & XEN_DOMINF_shutdownmask;
else
xlinfo->shutdown_reason = ~0;
xlinfo->current_memkb = PAGE_TO_MEMKB(xcinfo->tot_pages);
xlinfo->max_memkb = PAGE_TO_MEMKB(xcinfo->max_pages);
xlinfo->cpu_time = xcinfo->cpu_time;
xlinfo->vcpu_max_id = xcinfo->max_vcpu_id;
xlinfo->vcpu_online = xcinfo->nr_online_vcpus;
}
libxl_dominfo * libxl_list_domain(libxl_ctx *ctx, int *nb_domain)
{
libxl_dominfo *ptr;
int i, ret;
xc_domaininfo_t info[1024];
int size = 1024;
ptr = calloc(size, sizeof(libxl_dominfo));
if (!ptr) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "allocating domain info");
return NULL;
}
ret = xc_domain_getinfolist(ctx->xch, 0, 1024, info);
if (ret<0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "geting domain info list");
return NULL;
}
for (i = 0; i < ret; i++) {
xcinfo2xlinfo(&info[i], &ptr[i]);
}
*nb_domain = ret;
return ptr;
}
int libxl_domain_info(libxl_ctx *ctx, libxl_dominfo *info_r,
uint32_t domid) {
xc_domaininfo_t xcinfo;
int ret;
ret = xc_domain_getinfolist(ctx->xch, domid, 1, &xcinfo);
if (ret<0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "geting domain info list");
return ERROR_FAIL;
}
if (ret==0 || xcinfo.domain != domid) return ERROR_INVAL;
xcinfo2xlinfo(&xcinfo, info_r);
return 0;
}
libxl_cpupoolinfo * libxl_list_cpupool(libxl_ctx *ctx, int *nb_pool)
{
libxl_cpupoolinfo *ptr, *tmp;
int i;
xc_cpupoolinfo_t *info;
uint32_t poolid;
ptr = NULL;
poolid = 0;
for (i = 0;; i++) {
info = xc_cpupool_getinfo(ctx->xch, poolid);
if (info == NULL)
break;
tmp = realloc(ptr, (i + 1) * sizeof(libxl_cpupoolinfo));
if (!tmp) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "allocating cpupool info");
free(ptr);
xc_cpupool_infofree(ctx->xch, info);
return NULL;
}
ptr = tmp;
ptr[i].poolid = info->cpupool_id;
ptr[i].sched_id = info->sched_id;
ptr[i].n_dom = info->n_dom;
if (libxl_cpumap_alloc(ctx, &ptr[i].cpumap)) {
xc_cpupool_infofree(ctx->xch, info);
break;
}
memcpy(ptr[i].cpumap.map, info->cpumap, ptr[i].cpumap.size);
poolid = info->cpupool_id + 1;
xc_cpupool_infofree(ctx->xch, info);
}
*nb_pool = i;
return ptr;
}
/* this API call only list VM running on this host. a VM can be an aggregate of multiple domains. */
libxl_vminfo * libxl_list_vm(libxl_ctx *ctx, int *nb_vm)
{
libxl_vminfo *ptr;
int index, i, ret;
xc_domaininfo_t info[1024];
int size = 1024;
ptr = calloc(size, sizeof(libxl_dominfo));
if (!ptr)
return NULL;
ret = xc_domain_getinfolist(ctx->xch, 1, 1024, info);
if (ret<0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "geting domain info list");
return NULL;
}
for (index = i = 0; i < ret; i++) {
if (libxl_is_stubdom(ctx, info[i].domain, NULL))
continue;
memcpy(&(ptr[index].uuid), info[i].handle, sizeof(xen_domain_handle_t));
ptr[index].domid = info[i].domain;
index++;
}
*nb_vm = index;
return ptr;
}
int libxl_domain_suspend(libxl_ctx *ctx, libxl_domain_suspend_info *info,
uint32_t domid, int fd)
{
int hvm = libxl__domain_is_hvm(ctx, domid);
int live = info != NULL && info->flags & XL_SUSPEND_LIVE;
int debug = info != NULL && info->flags & XL_SUSPEND_DEBUG;
int rc = 0;
rc = libxl__domain_suspend_common(ctx, domid, fd, hvm, live, debug);
if (!rc && hvm)
rc = libxl__domain_save_device_model(ctx, domid, fd);
return rc;
}
int libxl_domain_pause(libxl_ctx *ctx, uint32_t domid)
{
int ret;
ret = xc_domain_pause(ctx->xch, domid);
if (ret<0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "pausing domain %d", domid);
return ERROR_FAIL;
}
return 0;
}
int libxl_domain_core_dump(libxl_ctx *ctx, uint32_t domid,
const char *filename)
{
int ret;
ret = xc_domain_dumpcore(ctx->xch, domid, filename);
if (ret<0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "core dumping domain %d to %s",
domid, filename);
return ERROR_FAIL;
}
return 0;
}
int libxl_domain_unpause(libxl_ctx *ctx, uint32_t domid)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
char *path;
char *state;
int ret, rc = 0;
if (libxl__domain_is_hvm(ctx, domid)) {
path = libxl__sprintf(&gc, "/local/domain/0/device-model/%d/state", domid);
state = libxl__xs_read(&gc, XBT_NULL, path);
if (state != NULL && !strcmp(state, "paused")) {
libxl__xs_write(&gc, XBT_NULL, libxl__sprintf(&gc, "/local/domain/0/device-model/%d/command", domid), "continue");
libxl__wait_for_device_model(ctx, domid, "running", NULL, NULL);
}
}
ret = xc_domain_unpause(ctx->xch, domid);
if (ret<0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "unpausing domain %d", domid);
rc = ERROR_FAIL;
}
libxl__free_all(&gc);
return rc;
}
static char *req_table[] = {
[0] = "poweroff",
[1] = "reboot",
[2] = "suspend",
[3] = "crash",
[4] = "halt",
};
int libxl_domain_shutdown(libxl_ctx *ctx, uint32_t domid, int req)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
char *shutdown_path;
char *dom_path;
if (req > ARRAY_SIZE(req_table)) {
libxl__free_all(&gc);
return ERROR_INVAL;
}
dom_path = libxl__xs_get_dompath(&gc, domid);
if (!dom_path) {
libxl__free_all(&gc);
return ERROR_FAIL;
}
if (libxl__domain_is_hvm(ctx,domid)) {
unsigned long pvdriver = 0;
int ret;
ret = xc_get_hvm_param(ctx->xch, domid, HVM_PARAM_CALLBACK_IRQ, &pvdriver);
if (ret<0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "getting HVM callback IRQ");
libxl__free_all(&gc);
return ERROR_FAIL;
}
if (!pvdriver) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "HVM domain without PV drivers:"
" graceful shutdown not possible, use destroy");
libxl__free_all(&gc);
return ERROR_FAIL;
}
}
shutdown_path = libxl__sprintf(&gc, "%s/control/shutdown", dom_path);
xs_write(ctx->xsh, XBT_NULL, shutdown_path, req_table[req], strlen(req_table[req]));
libxl__free_all(&gc);
return 0;
}
int libxl_get_wait_fd(libxl_ctx *ctx, int *fd)
{
*fd = xs_fileno(ctx->xsh);
return 0;
}
int libxl_wait_for_domain_death(libxl_ctx *ctx, uint32_t domid, libxl_waiter *waiter)
{
waiter->path = strdup("@releaseDomain");
if (asprintf(&(waiter->token), "%d", LIBXL_EVENT_DOMAIN_DEATH) < 0)
return -1;
if (!xs_watch(ctx->xsh, waiter->path, waiter->token))
return -1;
return 0;
}
int libxl_wait_for_disk_ejects(libxl_ctx *ctx, uint32_t guest_domid, libxl_device_disk *disks, int num_disks, libxl_waiter *waiter)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
int i, rc = -1;
uint32_t domid = libxl_get_stubdom_id(ctx, guest_domid);
if (!domid)
domid = guest_domid;
for (i = 0; i < num_disks; i++) {
if (asprintf(&(waiter[i].path), "%s/device/vbd/%d/eject",
libxl__xs_get_dompath(&gc, domid),
libxl__device_disk_dev_number(disks[i].vdev)) < 0)
goto out;
if (asprintf(&(waiter[i].token), "%d", LIBXL_EVENT_DISK_EJECT) < 0)
goto out;
xs_watch(ctx->xsh, waiter->path, waiter->token);
}
rc = 0;
out:
libxl__free_all(&gc);
return rc;
}
int libxl_get_event(libxl_ctx *ctx, libxl_event *event)
{
unsigned int num;
char **events = xs_read_watch(ctx->xsh, &num);
if (num != 2) {
free(events);
return ERROR_FAIL;
}
event->path = strdup(events[XS_WATCH_PATH]);
event->token = strdup(events[XS_WATCH_TOKEN]);
event->type = atoi(event->token);
free(events);
return 0;
}
int libxl_stop_waiting(libxl_ctx *ctx, libxl_waiter *waiter)
{
if (!xs_unwatch(ctx->xsh, waiter->path, waiter->token))
return ERROR_FAIL;
else
return 0;
}
int libxl_free_event(libxl_event *event)
{
free(event->path);
free(event->token);
return 0;
}
int libxl_free_waiter(libxl_waiter *waiter)
{
free(waiter->path);
free(waiter->token);
return 0;
}
int libxl_event_get_domain_death_info(libxl_ctx *ctx, uint32_t domid, libxl_event *event, libxl_dominfo *info)
{
if (libxl_domain_info(ctx, info, domid) < 0)
return 0;
if (info->running || (!info->shutdown && !info->dying))
return ERROR_INVAL;
return 1;
}
int libxl_event_get_disk_eject_info(libxl_ctx *ctx, uint32_t domid, libxl_event *event, libxl_device_disk *disk)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
char *path;
char *backend;
char *value;
value = libxl__xs_read(&gc, XBT_NULL, event->path);
if (!value || strcmp(value, "eject")) {
libxl__free_all(&gc);
return 0;
}
path = strdup(event->path);
path[strlen(path) - 6] = '\0';
backend = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/backend", path));
disk->backend_domid = 0;
disk->domid = domid;
disk->pdev_path = strdup("");
disk->format = DISK_FORMAT_EMPTY;
/* this value is returned to the user: do not free right away */
disk->vdev = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/dev", backend));
disk->unpluggable = 1;
disk->readwrite = 0;
disk->is_cdrom = 1;
free(path);
libxl__free_all(&gc);
return 1;
}
int libxl_domain_destroy(libxl_ctx *ctx, uint32_t domid, int force)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
libxl_dominfo dominfo;
char *dom_path;
char *vm_path;
int rc, dm_present;
rc = libxl_domain_info(ctx, &dominfo, domid);
switch(rc) {
case 0:
break;
case ERROR_INVAL:
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "non-existant domain %d", domid);
default:
return rc;
}
if (libxl__domain_is_hvm(ctx, domid)) {
dm_present = 1;
} else {
char *pid;
pid = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "/local/domain/%d/image/device-model-pid", domid));
dm_present = (pid != NULL);
}
dom_path = libxl__xs_get_dompath(&gc, domid);
if (!dom_path) {
rc = ERROR_FAIL;
goto out;
}
if (libxl_device_pci_shutdown(ctx, domid) < 0)
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "pci shutdown failed for domid %d", domid);
rc = xc_domain_pause(ctx->xch, domid);
if (rc < 0) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc, "xc_domain_pause failed for %d", domid);
}
if (dm_present) {
if (libxl__destroy_device_model(ctx, domid) < 0)
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "libxl__destroy_device_model failed for %d", domid);
}
if (libxl__devices_destroy(ctx, domid, force) < 0)
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "libxl_destroy_devices failed for %d", domid);
vm_path = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/vm", dom_path));
if (vm_path)
if (!xs_rm(ctx->xsh, XBT_NULL, vm_path))
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "xs_rm failed for %s", vm_path);
if (!xs_rm(ctx->xsh, XBT_NULL, dom_path))
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "xs_rm failed for %s", dom_path);
libxl__userdata_destroyall(ctx, domid);
rc = xc_domain_destroy(ctx->xch, domid);
if (rc < 0) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc, "xc_domain_destroy failed for %d", domid);
rc = ERROR_FAIL;
goto out;
}
rc = 0;
out:
libxl__free_all(&gc);
return 0;
}
int libxl_console_exec(libxl_ctx *ctx, uint32_t domid, int cons_num, libxl_console_constype type)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
char *p = libxl__sprintf(&gc, "%s/xenconsole", libxl_private_bindir_path());
char *domid_s = libxl__sprintf(&gc, "%d", domid);
char *cons_num_s = libxl__sprintf(&gc, "%d", cons_num);
char *cons_type_s;
switch (type) {
case LIBXL_CONSTYPE_PV:
cons_type_s = "pv";
break;
case LIBXL_CONSTYPE_SERIAL:
cons_type_s = "serial";
break;
default:
goto out;
}
execl(p, p, domid_s, "--num", cons_num_s, "--type", cons_type_s, (void *)NULL);
out:
libxl__free_all(&gc);
return ERROR_FAIL;
}
int libxl_primary_console_exec(libxl_ctx *ctx, uint32_t domid_vm)
{
uint32_t stubdomid = libxl_get_stubdom_id(ctx, domid_vm);
if (stubdomid)
return libxl_console_exec(ctx, stubdomid,
STUBDOM_CONSOLE_SERIAL, LIBXL_CONSTYPE_PV);
else {
if (libxl__domain_is_hvm(ctx, domid_vm))
return libxl_console_exec(ctx, domid_vm, 0, LIBXL_CONSTYPE_SERIAL);
else
return libxl_console_exec(ctx, domid_vm, 0, LIBXL_CONSTYPE_PV);
}
}
int libxl_vncviewer_exec(libxl_ctx *ctx, uint32_t domid, int autopass)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
const char *vnc_port;
const char *vnc_listen = NULL, *vnc_pass = NULL;
int port = 0, autopass_fd = -1;
char *vnc_bin, *args[] = {
"vncviewer",
NULL, /* hostname:display */
NULL, /* -autopass */
NULL,
};
vnc_port = libxl__xs_read(&gc, XBT_NULL,
libxl__sprintf(&gc,
"/local/domain/%d/console/vnc-port", domid));
if ( vnc_port )
port = atoi(vnc_port) - 5900;
vnc_listen = libxl__xs_read(&gc, XBT_NULL,
libxl__sprintf(&gc,
"/local/domain/%d/console/vnc-listen", domid));
if ( autopass )
vnc_pass = libxl__xs_read(&gc, XBT_NULL,
libxl__sprintf(&gc,
"/local/domain/%d/console/vnc-pass", domid));
if ( NULL == vnc_listen )
vnc_listen = "localhost";
if ( (vnc_bin = getenv("VNCVIEWER")) )
args[0] = vnc_bin;
args[1] = libxl__sprintf(&gc, "%s:%d", vnc_listen, port);
if ( vnc_pass ) {
char tmpname[] = "/tmp/vncautopass.XXXXXX";
autopass_fd = mkstemp(tmpname);
if ( autopass_fd < 0 ) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"mkstemp %s failed", tmpname);
goto x_fail;
}
if ( unlink(tmpname) ) {
/* should never happen */
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"unlink %s failed", tmpname);
goto x_fail;
}
if ( libxl_write_exactly(ctx, autopass_fd, vnc_pass, strlen(vnc_pass),
tmpname, "vnc password") )
goto x_fail;
if ( lseek(autopass_fd, SEEK_SET, 0) ) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"rewind %s (autopass) failed", tmpname);
goto x_fail;
}
args[2] = "-autopass";
}
libxl__exec(autopass_fd, -1, -1, args[0], args);
abort();
x_fail:
libxl__free_all(&gc);
return ERROR_FAIL;
}
/******************************************************************************/
static int validate_virtual_disk(libxl_ctx *ctx, char *file_name,
libxl_device_disk *disk)
{
struct stat stat_buf;
char *delimiter;
if (disk->format == DISK_FORMAT_EMPTY)
return 0;
if (disk->format == DISK_FORMAT_RAW) {
delimiter = strchr(file_name, ':');
if (delimiter) {
if (!strncmp(file_name, "vhd:", sizeof("vhd:")-1)) {
disk->format = DISK_FORMAT_VHD;
file_name = ++delimiter;
}
}
}
if ( stat(file_name, &stat_buf) != 0 ) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "failed to stat %s", file_name);
return ERROR_INVAL;
}
if (disk->backend == DISK_BACKEND_PHY) {
if ( !(S_ISBLK(stat_buf.st_mode)) ) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "Virtual disk %s is not a block device!\n",
file_name);
return ERROR_INVAL;
}
} else if ( S_ISREG(stat_buf.st_mode) && stat_buf.st_size == 0 ) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "Virtual disk %s size is 0!\n", file_name);
return ERROR_INVAL;
}
return 0;
}
int libxl_device_disk_add(libxl_ctx *ctx, uint32_t domid, libxl_device_disk *disk)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
flexarray_t *front;
flexarray_t *back;
char *backend_type;
int devid;
libxl__device device;
int major, minor, rc;
rc = validate_virtual_disk(ctx, disk->pdev_path, disk);
if (rc)
return rc;
front = flexarray_make(16, 1);
if (!front) {
rc = ERROR_NOMEM;
goto out;
}
back = flexarray_make(16, 1);
if (!back) {
rc = ERROR_NOMEM;
goto out_free;
}
backend_type = libxl__device_disk_string_of_backend(disk->backend);
devid = libxl__device_disk_dev_number(disk->vdev);
if (devid==-1) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "Invalid or unsupported"
" virtual disk identifier %s", disk->vdev);
rc = ERROR_INVAL;
goto out_free;
}
device.backend_devid = devid;
device.backend_domid = disk->backend_domid;
device.devid = devid;
device.domid = disk->domid;
device.kind = DEVICE_VBD;
switch (disk->backend) {
case DISK_BACKEND_PHY:
libxl__device_physdisk_major_minor(disk->pdev_path, &major, &minor);
flexarray_append(back, "physical-device");
flexarray_append(back, libxl__sprintf(&gc, "%x:%x", major, minor));
flexarray_append(back, "params");
flexarray_append(back, disk->pdev_path);
device.backend_kind = DEVICE_VBD;
break;
case DISK_BACKEND_TAP:
case DISK_BACKEND_QDISK:
if (libxl__blktap_enabled(&gc) && disk->format != DISK_FORMAT_EMPTY) {
const char *dev = libxl__blktap_devpath(&gc,
disk->pdev_path, disk->format);
if (!dev) {
rc = ERROR_FAIL;
goto out_free;
}
flexarray_append(back, "tapdisk-params");
flexarray_append(back, libxl__sprintf(&gc, "%s:%s",
libxl__device_disk_string_of_format(disk->format),
disk->pdev_path));
flexarray_append(back, "params");
flexarray_append(back, libxl__strdup(&gc, dev));
backend_type = "phy";
libxl__device_physdisk_major_minor(dev, &major, &minor);
flexarray_append(back, "physical-device");
flexarray_append(back, libxl__sprintf(&gc, "%x:%x", major, minor));
device.backend_kind = DEVICE_VBD;
break;
}
flexarray_append(back, "params");
flexarray_append(back, libxl__sprintf(&gc, "%s:%s",
libxl__device_disk_string_of_format(disk->format), disk->pdev_path));
if (libxl__blktap_enabled(&gc) &&
disk->backend != DISK_BACKEND_QDISK)
device.backend_kind = DEVICE_TAP;
else
device.backend_kind = DEVICE_QDISK;
break;
default:
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "unrecognized disk backend type: %d\n", disk->backend);
rc = ERROR_INVAL;
goto out_free;
}
flexarray_append(back, "frontend-id");
flexarray_append(back, libxl__sprintf(&gc, "%d", disk->domid));
flexarray_append(back, "online");
flexarray_append(back, "1");
flexarray_append(back, "removable");
flexarray_append(back, libxl__sprintf(&gc, "%d", (disk->unpluggable) ? 1 : 0));
flexarray_append(back, "bootable");
flexarray_append(back, libxl__sprintf(&gc, "%d", 1));
flexarray_append(back, "state");
flexarray_append(back, libxl__sprintf(&gc, "%d", 1));
flexarray_append(back, "dev");
flexarray_append(back, disk->vdev);
flexarray_append(back, "type");
flexarray_append(back, backend_type);
flexarray_append(back, "mode");
flexarray_append(back, disk->readwrite ? "w" : "r");
flexarray_append(front, "backend-id");
flexarray_append(front, libxl__sprintf(&gc, "%d", disk->backend_domid));
flexarray_append(front, "state");
flexarray_append(front, libxl__sprintf(&gc, "%d", 1));
flexarray_append(front, "virtual-device");
flexarray_append(front, libxl__sprintf(&gc, "%d", devid));
flexarray_append(front, "device-type");
flexarray_append(front, disk->is_cdrom ? "cdrom" : "disk");
if (0 /* protocol != native*/) {
flexarray_append(front, "protocol");
flexarray_append(front, "x86_32-abi"); /* hardcoded ! */
}
libxl__device_generic_add(ctx, &device,
libxl__xs_kvs_of_flexarray(&gc, back, back->count),
libxl__xs_kvs_of_flexarray(&gc, front, front->count));
rc = 0;
out_free:
flexarray_free(back);
flexarray_free(front);
out:
libxl__free_all(&gc);
return rc;
}
int libxl_device_disk_del(libxl_ctx *ctx,
libxl_device_disk *disk, int wait)
{
libxl__device device;
int devid;
devid = libxl__device_disk_dev_number(disk->vdev);
device.backend_domid = disk->backend_domid;
device.backend_devid = devid;
device.backend_kind =
(disk->backend == DISK_BACKEND_PHY) ? DEVICE_VBD : DEVICE_TAP;
device.domid = disk->domid;
device.devid = devid;
device.kind = DEVICE_VBD;
return libxl__device_del(ctx, &device, wait);
}
char * libxl_device_disk_local_attach(libxl_ctx *ctx, libxl_device_disk *disk)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
const char *dev = NULL;
char *ret = NULL;
switch (disk->backend) {
case DISK_BACKEND_PHY:
if (disk->format != DISK_FORMAT_RAW) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "physical block device must"
" be raw");
break;
}
LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "attaching PHY disk %s to domain 0",
disk->pdev_path);
dev = disk->pdev_path;
break;
case DISK_BACKEND_TAP:
if (disk->format == DISK_FORMAT_VHD || disk->format == DISK_FORMAT_RAW)
{
if (libxl__blktap_enabled(&gc))
dev = libxl__blktap_devpath(&gc, disk->pdev_path, disk->format);
else {
if (disk->format != DISK_FORMAT_RAW) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "tapdisk2 is required"
" to open a vhd disk");
break;
} else {
LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "attaching tap disk %s to domain 0",
disk->pdev_path);
dev = disk->pdev_path;
break;
}
}
break;
} else if (disk->format == DISK_FORMAT_QCOW ||
disk->format == DISK_FORMAT_QCOW2) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "cannot locally attach a qcow or qcow2 disk image");
break;
} else {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "unrecognized disk backend "
"type: %d", disk->backend);
break;
}
case DISK_BACKEND_QDISK:
if (disk->format != DISK_FORMAT_RAW) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "cannot locally attach a qdisk "
"image if the format is not raw");
break;
}
LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "attaching qdisk %s to domain 0\n",
disk->pdev_path);
dev = disk->pdev_path;
break;
case DISK_BACKEND_UNKNOWN:
default:
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "unrecognized disk backend "
"type: %d", disk->backend);
break;
}
if (dev != NULL)
ret = strdup(dev);
libxl__free_all(&gc);
return ret;
}
int libxl_device_disk_local_detach(libxl_ctx *ctx, libxl_device_disk *disk)
{
/* Nothing to do for PHYSTYPE_PHY. */
/*
* For other device types assume that the blktap2 process is
* needed by the soon to be started domain and do nothing.
*/
return 0;
}
/******************************************************************************/
int libxl_device_nic_init(libxl_device_nic *nic_info, int devnum)
{
const uint8_t *r;
libxl_uuid uuid;
libxl_uuid_generate(&uuid);
r = libxl_uuid_bytearray(&uuid);
memset(nic_info, '\0', sizeof(*nic_info));
nic_info->backend_domid = 0;
nic_info->domid = 0;
nic_info->devid = devnum;
nic_info->mtu = 1492;
nic_info->model = strdup("rtl8139");
nic_info->mac[0] = 0x00;
nic_info->mac[1] = 0x16;
nic_info->mac[2] = 0x3e;
nic_info->mac[3] = r[0] & 0x7f;
nic_info->mac[4] = r[1];
nic_info->mac[5] = r[2];
nic_info->ifname = NULL;
nic_info->bridge = strdup("xenbr0");
if ( asprintf(&nic_info->script, "%s/vif-bridge",
libxl_xen_script_dir_path()) < 0 )
return ERROR_FAIL;
nic_info->nictype = NICTYPE_IOEMU;
return 0;
}
int libxl_device_nic_add(libxl_ctx *ctx, uint32_t domid, libxl_device_nic *nic)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
flexarray_t *front;
flexarray_t *back;
libxl__device device;
char *dompath, **l;
unsigned int nb, rc;
front = flexarray_make(16, 1);
if (!front) {
rc = ERROR_NOMEM;
goto out;
}
back = flexarray_make(16, 1);
if (!back) {
rc = ERROR_NOMEM;
goto out_free;
}
if (nic->devid == -1) {
if (!(dompath = libxl__xs_get_dompath(&gc, domid))) {
rc = ERROR_FAIL;
goto out_free;
}
if (!(l = libxl__xs_directory(&gc, XBT_NULL,
libxl__sprintf(&gc, "%s/device/vif", dompath), &nb))) {
nic->devid = 0;
} else {
nic->devid = strtoul(l[nb - 1], NULL, 10) + 1;
}
}
device.backend_devid = nic->devid;
device.backend_domid = nic->backend_domid;
device.backend_kind = DEVICE_VIF;
device.devid = nic->devid;
device.domid = nic->domid;
device.kind = DEVICE_VIF;
flexarray_append(back, "frontend-id");
flexarray_append(back, libxl__sprintf(&gc, "%d", nic->domid));
flexarray_append(back, "online");
flexarray_append(back, "1");
flexarray_append(back, "state");
flexarray_append(back, libxl__sprintf(&gc, "%d", 1));
flexarray_append(back, "script");
flexarray_append(back, nic->script);
flexarray_append(back, "mac");
flexarray_append(back, libxl__sprintf(&gc, "%02x:%02x:%02x:%02x:%02x:%02x",
nic->mac[0], nic->mac[1], nic->mac[2],
nic->mac[3], nic->mac[4], nic->mac[5]));
flexarray_append(back, "bridge");
flexarray_append(back, libxl__strdup(&gc, nic->bridge));
flexarray_append(back, "handle");
flexarray_append(back, libxl__sprintf(&gc, "%d", nic->devid));
flexarray_append(front, "backend-id");
flexarray_append(front, libxl__sprintf(&gc, "%d", nic->backend_domid));
flexarray_append(front, "state");
flexarray_append(front, libxl__sprintf(&gc, "%d", 1));
flexarray_append(front, "handle");
flexarray_append(front, libxl__sprintf(&gc, "%d", nic->devid));
flexarray_append(front, "mac");
flexarray_append(front, libxl__sprintf(&gc, "%02x:%02x:%02x:%02x:%02x:%02x",
nic->mac[0], nic->mac[1], nic->mac[2],
nic->mac[3], nic->mac[4], nic->mac[5]));
if (0 /* protocol != native*/) {
flexarray_append(front, "protocol");
flexarray_append(front, "x86_32-abi"); /* hardcoded ! */
}
libxl__device_generic_add(ctx, &device,
libxl__xs_kvs_of_flexarray(&gc, back, back->count),
libxl__xs_kvs_of_flexarray(&gc, front, front->count));
/* FIXME: wait for plug */
rc = 0;
out_free:
flexarray_free(back);
flexarray_free(front);
out:
libxl__free_all(&gc);
return rc;
}
int libxl_device_nic_del(libxl_ctx *ctx,
libxl_device_nic *nic, int wait)
{
libxl__device device;
device.backend_devid = nic->devid;
device.backend_domid = nic->backend_domid;
device.backend_kind = DEVICE_VIF;
device.devid = nic->devid;
device.domid = nic->domid;
device.kind = DEVICE_VIF;
return libxl__device_del(ctx, &device, wait);
}
libxl_nicinfo *libxl_list_nics(libxl_ctx *ctx, uint32_t domid, unsigned int *nb)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
char *dompath, *nic_path_fe;
char **l, **list;
char *val, *tok;
unsigned int nb_nics, i;
libxl_nicinfo *res, *nics;
dompath = libxl__xs_get_dompath(&gc, domid);
if (!dompath)
goto err;
list = l = libxl__xs_directory(&gc, XBT_NULL,
libxl__sprintf(&gc, "%s/device/vif", dompath), &nb_nics);
if (!l)
goto err;
nics = res = calloc(nb_nics, sizeof (libxl_device_nic));
if (!res)
goto err;
for (*nb = nb_nics; nb_nics > 0; --nb_nics, ++l, ++nics) {
nic_path_fe = libxl__sprintf(&gc, "%s/device/vif/%s", dompath, *l);
nics->backend = xs_read(ctx->xsh, XBT_NULL,
libxl__sprintf(&gc, "%s/backend", nic_path_fe), NULL);
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/backend-id", nic_path_fe));
nics->backend_id = val ? strtoul(val, NULL, 10) : -1;
nics->devid = strtoul(*l, NULL, 10);
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/state", nic_path_fe));
nics->state = val ? strtoul(val, NULL, 10) : -1;
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/mac", nic_path_fe));
for (i = 0, tok = strtok(val, ":"); tok && (i < 6);
++i, tok = strtok(NULL, ":")) {
nics->mac[i] = strtoul(tok, NULL, 16);
}
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/event-channel", nic_path_fe));
nics->evtch = val ? strtol(val, NULL, 10) : -1;
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/tx-ring-ref", nic_path_fe));
nics->rref_tx = val ? strtol(val, NULL, 10) : -1;
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/rx-ring-ref", nic_path_fe));
nics->rref_rx = val ? strtol(val, NULL, 10) : -1;
nics->frontend = xs_read(ctx->xsh, XBT_NULL,
libxl__sprintf(&gc, "%s/frontend", nics->backend), NULL);
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/frontend-id", nics->backend));
nics->frontend_id = val ? strtoul(val, NULL, 10) : -1;
nics->script = xs_read(ctx->xsh, XBT_NULL,
libxl__sprintf(&gc, "%s/script", nics->backend), NULL);
}
libxl__free_all(&gc);
return res;
err:
libxl__free_all(&gc);
return NULL;
}
/******************************************************************************/
void libxl_device_net2_init(libxl_device_net2 *net2_info, int devnum)
{
const uint8_t *r;
libxl_uuid uuid;
libxl_uuid_generate(&uuid);
r = libxl_uuid_bytearray(&uuid);
memset(net2_info, '\0', sizeof(*net2_info));
net2_info->devid = devnum;
net2_info->front_mac[0] = 0x00;
net2_info->front_mac[1] = 0x16;
net2_info->front_mac[2] = 0x3e;;
net2_info->front_mac[3] = 0x7f & r[0];
net2_info->front_mac[4] = r[1];
net2_info->front_mac[5] = r[2];
net2_info->back_mac[0] = 0x00;
net2_info->back_mac[1] = 0x16;
net2_info->back_mac[2] = 0x3e;
net2_info->back_mac[3] = 0x7f & r[3];
net2_info->back_mac[4] = r[4];
net2_info->back_mac[5] = r[5];
net2_info->back_trusted = 1;
net2_info->filter_mac = 1;
net2_info->max_bypasses = 5;
net2_info->bridge = strdup("xenbr0");
}
int libxl_device_net2_add(libxl_ctx *ctx, uint32_t domid, libxl_device_net2 *net2)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
flexarray_t *front, *back;
libxl__device device;
char *dompath, *dom, **l;
unsigned int nb;
int rc;
front = flexarray_make(16, 1);
if (!front) {
rc = ERROR_NOMEM;
goto err;
}
back = flexarray_make(16, 1);
if (!back) {
rc = ERROR_NOMEM;
goto err_free;
}
if (!(dompath = libxl__xs_get_dompath(&gc, domid))) {
rc = ERROR_FAIL;
goto err_free;
}
dom = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/name", dompath));
if (net2->devid == -1) {
if (!(l = libxl__xs_directory(&gc, XBT_NULL,
libxl__sprintf(&gc, "%s/device/vif2", dompath), &nb))) {
net2->devid = 0;
} else {
net2->devid = strtoul(l[nb - 1], NULL, 10) + 1;
}
}
device.backend_devid = net2->devid;
device.backend_domid = net2->backend_domid;
device.backend_kind = DEVICE_VIF2;
device.devid = net2->devid;
device.domid = net2->domid;
device.kind = DEVICE_VIF2;
flexarray_append(back, "domain");
flexarray_append(back, dom);
flexarray_append(back, "frontend-id");
flexarray_append(back, libxl__sprintf(&gc, "%d", net2->domid));
flexarray_append(back, "local-trusted");
flexarray_append(back, libxl__sprintf(&gc, "%d", net2->back_trusted));
flexarray_append(back, "mac");
flexarray_append(back, libxl__sprintf(&gc, "%02x:%02x:%02x:%02x:%02x:%02x",
net2->back_mac[0], net2->back_mac[1],
net2->back_mac[2], net2->back_mac[3],
net2->back_mac[4], net2->back_mac[5]));
flexarray_append(back, "remote-trusted");
flexarray_append(back, libxl__sprintf(&gc, "%d", net2->trusted));
flexarray_append(back, "remote-mac");
flexarray_append(back, libxl__sprintf(&gc, "%02x:%02x:%02x:%02x:%02x:%02x",
net2->front_mac[0], net2->front_mac[1],
net2->front_mac[2], net2->front_mac[3],
net2->front_mac[4], net2->front_mac[5]));
flexarray_append(back, "max-bypasses");
flexarray_append(back, libxl__sprintf(&gc, "%d", net2->max_bypasses));
flexarray_append(back, "filter-mac");
flexarray_append(back, libxl__sprintf(&gc, "%d", !!(net2->filter_mac)));
flexarray_append(back, "handle");
flexarray_append(back, libxl__sprintf(&gc, "%d", net2->devid));
flexarray_append(back, "online");
flexarray_append(back, "1");
flexarray_append(back, "state");
flexarray_append(back, "1");
flexarray_append(front, "backend-id");
flexarray_append(front, libxl__sprintf(&gc, "%d", net2->backend_domid));
flexarray_append(front, "local-trusted");
flexarray_append(front, libxl__sprintf(&gc, "%d", net2->trusted));
flexarray_append(front, "mac");
flexarray_append(front, libxl__sprintf(&gc, "%02x:%02x:%02x:%02x:%02x:%02x",
net2->front_mac[0], net2->front_mac[1],
net2->front_mac[2], net2->front_mac[3],
net2->front_mac[4], net2->front_mac[5]));
flexarray_append(front, "remote-trusted");
flexarray_append(front, libxl__sprintf(&gc, "%d", net2->back_trusted));
flexarray_append(front, "remote-mac");
flexarray_append(front, libxl__sprintf(&gc, "%02x:%02x:%02x:%02x:%02x:%02x",
net2->back_mac[0], net2->back_mac[1],
net2->back_mac[2], net2->back_mac[3],
net2->back_mac[4], net2->back_mac[5]));
flexarray_append(front, "filter-mac");
flexarray_append(front, libxl__sprintf(&gc, "%d", !!(net2->filter_mac)));
flexarray_append(front, "state");
flexarray_append(front, "1");
libxl__device_generic_add(ctx, &device,
libxl__xs_kvs_of_flexarray(&gc, back, back->count),
libxl__xs_kvs_of_flexarray(&gc, front, front->count));
/* FIXME: wait for plug */
rc = 0;
err_free:
flexarray_free(back);
flexarray_free(front);
err:
libxl__free_all(&gc);
return rc;
}
libxl_net2info *libxl_device_net2_list(libxl_ctx *ctx, uint32_t domid, unsigned int *nb)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
char *dompath, *net2_path_fe;
char **l;
char *val, *tok;
unsigned int nb_net2s, i;
libxl_net2info *res, *net2s;
dompath = libxl__xs_get_dompath(&gc, domid);
if (!dompath)
goto err;
l = libxl__xs_directory(&gc, XBT_NULL,
libxl__sprintf(&gc, "%s/device/vif2", dompath), &nb_net2s);
if (!l)
goto err;
res = calloc(nb_net2s, sizeof (libxl_net2info));
if (!res)
goto err;
net2s = res;
for (*nb = nb_net2s; nb_net2s > 0; --nb_net2s, ++l, ++net2s) {
net2_path_fe = libxl__sprintf(&gc, "%s/device/vif2/%s", dompath, *l);
net2s->backend = libxl__xs_read(&gc, XBT_NULL,
libxl__sprintf(&gc, "%s/backend", net2_path_fe));
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/backend-id", net2_path_fe));
net2s->backend_id = val ? strtoul(val, NULL, 10) : -1;
net2s->devid = strtoul(*l, NULL, 10);
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/state", net2_path_fe));
net2s->state = val ? strtoul(val, NULL, 10) : -1;
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/mac", net2_path_fe));
for (i = 0, tok = strtok(val, ":"); tok && (i < 6);
++i, tok = strtok(NULL, ":")) {
net2s->mac[i] = strtoul(tok, NULL, 16);
}
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/remote-trusted", net2_path_fe));
net2s->trusted = val ? strtoul(val, NULL, 10) : -1;
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/remote-mac", net2_path_fe));
for (i = 0, tok = strtok(val, ":"); tok && (i < 6);
++i, tok = strtok(NULL, ":")) {
net2s->back_mac[i] = strtoul(tok, NULL, 16);
}
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/filter-mac", net2_path_fe));
net2s->filter_mac = val ? strtoul(val, NULL, 10) : -1;
net2s->frontend = libxl__xs_read(&gc, XBT_NULL,
libxl__sprintf(&gc, "%s/frontend", net2s->backend));
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/frontend-id", net2s->backend));
net2s->frontend_id = val ? strtoul(val, NULL, 10) : -1;
}
libxl__free_all(&gc);
return res;
err:
libxl__free_all(&gc);
return NULL;
}
int libxl_device_net2_del(libxl_ctx *ctx, libxl_device_net2 *net2, int wait)
{
libxl__device device;
device.backend_devid = net2->devid;
device.backend_domid = net2->backend_domid;
device.backend_kind = DEVICE_VIF2;
device.devid = net2->devid;
device.domid = net2->domid;
device.kind = DEVICE_VIF2;
return libxl__device_del(ctx, &device, wait);
}
/******************************************************************************/
int libxl_device_console_add(libxl_ctx *ctx, uint32_t domid, libxl_device_console *console)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
flexarray_t *front;
flexarray_t *back;
libxl__device device;
int rc;
front = flexarray_make(16, 1);
if (!front) {
rc = ERROR_NOMEM;
goto out;
}
back = flexarray_make(16, 1);
if (!back) {
rc = ERROR_NOMEM;
goto out_free;
}
device.backend_devid = console->devid;
device.backend_domid = console->backend_domid;
device.backend_kind = DEVICE_CONSOLE;
device.devid = console->devid;
device.domid = console->domid;
device.kind = DEVICE_CONSOLE;
flexarray_append(back, "frontend-id");
flexarray_append(back, libxl__sprintf(&gc, "%d", console->domid));
flexarray_append(back, "online");
flexarray_append(back, "1");
flexarray_append(back, "state");
flexarray_append(back, libxl__sprintf(&gc, "%d", 1));
flexarray_append(back, "domain");
flexarray_append(back, libxl__domid_to_name(&gc, domid));
flexarray_append(back, "protocol");
flexarray_append(back, LIBXL_XENCONSOLE_PROTOCOL);
flexarray_append(front, "backend-id");
flexarray_append(front, libxl__sprintf(&gc, "%d", console->backend_domid));
flexarray_append(front, "limit");
flexarray_append(front, libxl__sprintf(&gc, "%d", LIBXL_XENCONSOLE_LIMIT));
flexarray_append(front, "type");
if (console->consback == LIBXL_CONSBACK_XENCONSOLED)
flexarray_append(front, "xenconsoled");
else
flexarray_append(front, "ioemu");
flexarray_append(front, "output");
flexarray_append(front, console->output);
if (device.devid == 0) {
if (console->build_state == NULL) {
rc = ERROR_INVAL;
goto out_free;
}
flexarray_append(front, "port");
flexarray_append(front, libxl__sprintf(&gc, "%"PRIu32, console->build_state->console_port));
flexarray_append(front, "ring-ref");
flexarray_append(front, libxl__sprintf(&gc, "%lu", console->build_state->console_mfn));
} else {
flexarray_append(front, "state");
flexarray_append(front, libxl__sprintf(&gc, "%d", 1));
flexarray_append(front, "protocol");
flexarray_append(front, LIBXL_XENCONSOLE_PROTOCOL);
}
libxl__device_generic_add(ctx, &device,
libxl__xs_kvs_of_flexarray(&gc, back, back->count),
libxl__xs_kvs_of_flexarray(&gc, front, front->count));
rc = 0;
out_free:
flexarray_free(back);
flexarray_free(front);
out:
libxl__free_all(&gc);
return rc;
}
/******************************************************************************/
void libxl_device_vkb_init(libxl_device_vkb *vkb, int dev_num)
{
memset(vkb, 0x00, sizeof(libxl_device_vkb));
vkb->devid = dev_num;
}
int libxl_device_vkb_add(libxl_ctx *ctx, uint32_t domid, libxl_device_vkb *vkb)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
flexarray_t *front;
flexarray_t *back;
libxl__device device;
int rc;
front = flexarray_make(16, 1);
if (!front) {
rc = ERROR_NOMEM;
goto out;
}
back = flexarray_make(16, 1);
if (!back) {
rc = ERROR_NOMEM;
goto out_free;
}
device.backend_devid = vkb->devid;
device.backend_domid = vkb->backend_domid;
device.backend_kind = DEVICE_VKBD;
device.devid = vkb->devid;
device.domid = vkb->domid;
device.kind = DEVICE_VKBD;
flexarray_append(back, "frontend-id");
flexarray_append(back, libxl__sprintf(&gc, "%d", vkb->domid));
flexarray_append(back, "online");
flexarray_append(back, "1");
flexarray_append(back, "state");
flexarray_append(back, libxl__sprintf(&gc, "%d", 1));
flexarray_append(back, "domain");
flexarray_append(back, libxl__domid_to_name(&gc, domid));
flexarray_append(front, "backend-id");
flexarray_append(front, libxl__sprintf(&gc, "%d", vkb->backend_domid));
flexarray_append(front, "state");
flexarray_append(front, libxl__sprintf(&gc, "%d", 1));
libxl__device_generic_add(ctx, &device,
libxl__xs_kvs_of_flexarray(&gc, back, back->count),
libxl__xs_kvs_of_flexarray(&gc, front, front->count));
rc = 0;
out_free:
flexarray_free(back);
flexarray_free(front);
out:
libxl__free_all(&gc);
return rc;
}
int libxl_device_vkb_clean_shutdown(libxl_ctx *ctx, uint32_t domid)
{
return ERROR_NI;
}
int libxl_device_vkb_hard_shutdown(libxl_ctx *ctx, uint32_t domid)
{
return ERROR_NI;
}
static unsigned int libxl_append_disk_list_of_type(libxl_ctx *ctx,
uint32_t domid,
const char *type,
libxl_device_disk **disks,
unsigned int *ndisks)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
char *be_path = NULL;
char **dir = NULL;
unsigned int n = 0, len = 0;
libxl_device_disk *pdisk = NULL, *pdisk_end = NULL;
char *physpath_tmp = NULL;
be_path = libxl__sprintf(&gc, "%s/backend/%s/%d",
libxl__xs_get_dompath(&gc, 0), type, domid);
dir = libxl__xs_directory(&gc, XBT_NULL, be_path, &n);
if (dir) {
*disks = realloc(*disks, sizeof (libxl_device_disk) * (*ndisks + n));
pdisk = *disks + *ndisks;
*ndisks += n;
pdisk_end = *disks + *ndisks;
for (; pdisk < pdisk_end; pdisk++, dir++) {
pdisk->backend_domid = 0;
pdisk->domid = domid;
physpath_tmp = xs_read(ctx->xsh, XBT_NULL, libxl__sprintf(&gc, "%s/%s/params", be_path, *dir), &len);
if (physpath_tmp && strchr(physpath_tmp, ':')) {
pdisk->pdev_path = strdup(strchr(physpath_tmp, ':') + 1);
free(physpath_tmp);
} else {
pdisk->pdev_path = physpath_tmp;
}
libxl_string_to_backend(ctx, libxl__xs_read(&gc, XBT_NULL,
libxl__sprintf(&gc, "%s/%s/type", be_path, *dir)),
&(pdisk->backend));
pdisk->vdev = xs_read(ctx->xsh, XBT_NULL, libxl__sprintf(&gc, "%s/%s/dev", be_path, *dir), &len);
pdisk->unpluggable = atoi(libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/%s/removable", be_path, *dir)));
if (!strcmp(libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/%s/mode", be_path, *dir)), "w"))
pdisk->readwrite = 1;
else
pdisk->readwrite = 0;
type = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/device-type", libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/%s/frontend", be_path, *dir))));
pdisk->is_cdrom = !strcmp(type, "cdrom");
}
}
libxl__free_all(&gc);
return n;
}
libxl_device_disk *libxl_device_disk_list(libxl_ctx *ctx, uint32_t domid, int *num)
{
libxl_device_disk *disks = NULL;
unsigned int ndisks = 0;
*num = libxl_append_disk_list_of_type(ctx, domid, "vbd", &disks, &ndisks);
*num += libxl_append_disk_list_of_type(ctx, domid, "tap", &disks, &ndisks);
*num += libxl_append_disk_list_of_type(ctx, domid, "qdisk", &disks, &ndisks);
return disks;
}
int libxl_device_disk_getinfo(libxl_ctx *ctx, uint32_t domid,
libxl_device_disk *disk, libxl_diskinfo *diskinfo)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
char *dompath, *diskpath;
char *val;
dompath = libxl__xs_get_dompath(&gc, domid);
diskinfo->devid = libxl__device_disk_dev_number(disk->vdev);
/* tap devices entries in xenstore are written as vbd devices. */
diskpath = libxl__sprintf(&gc, "%s/device/vbd/%d", dompath, diskinfo->devid);
diskinfo->backend = xs_read(ctx->xsh, XBT_NULL,
libxl__sprintf(&gc, "%s/backend", diskpath), NULL);
if (!diskinfo->backend) {
libxl__free_all(&gc);
return ERROR_FAIL;
}
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/backend-id", diskpath));
diskinfo->backend_id = val ? strtoul(val, NULL, 10) : -1;
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/state", diskpath));
diskinfo->state = val ? strtoul(val, NULL, 10) : -1;
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/event-channel", diskpath));
diskinfo->evtch = val ? strtoul(val, NULL, 10) : -1;
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/ring-ref", diskpath));
diskinfo->rref = val ? strtoul(val, NULL, 10) : -1;
diskinfo->frontend = xs_read(ctx->xsh, XBT_NULL,
libxl__sprintf(&gc, "%s/frontend", diskinfo->backend), NULL);
val = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/frontend-id", diskinfo->backend));
diskinfo->frontend_id = val ? strtoul(val, NULL, 10) : -1;
libxl__free_all(&gc);
return 0;
}
int libxl_cdrom_insert(libxl_ctx *ctx, uint32_t domid, libxl_device_disk *disk)
{
int num, i;
uint32_t stubdomid;
libxl_device_disk *disks;
int ret = ERROR_FAIL;
if (!disk->pdev_path) {
disk->pdev_path = strdup("");
disk->format = DISK_FORMAT_EMPTY;
}
disks = libxl_device_disk_list(ctx, domid, &num);
for (i = 0; i < num; i++) {
if (disks[i].is_cdrom && !strcmp(disk->vdev, disks[i].vdev))
/* found */
break;
}
if (i == num) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "Virtual device not found");
goto out;
}
ret = 0;
libxl_device_disk_del(ctx, disks + i, 1);
libxl_device_disk_add(ctx, domid, disk);
stubdomid = libxl_get_stubdom_id(ctx, domid);
if (stubdomid) {
disks[i].domid = stubdomid;
libxl_device_disk_del(ctx, disks + i, 1);
disk->domid = stubdomid;
libxl_device_disk_add(ctx, stubdomid, disk);
disk->domid = domid;
}
out:
for (i = 0; i < num; i++)
libxl_device_disk_destroy(&disks[i]);
free(disks);
return ret;
}
/******************************************************************************/
void libxl_device_vfb_init(libxl_device_vfb *vfb, int dev_num)
{
memset(vfb, 0x00, sizeof(libxl_device_vfb));
vfb->devid = dev_num;
vfb->display = NULL;
vfb->xauthority = NULL;
vfb->vnc = 1;
vfb->vncpasswd = NULL;
vfb->vnclisten = strdup("127.0.0.1");
vfb->vncdisplay = 0;
vfb->vncunused = 1;
vfb->keymap = NULL;
vfb->sdl = 0;
vfb->opengl = 0;
}
int libxl_device_vfb_add(libxl_ctx *ctx, uint32_t domid, libxl_device_vfb *vfb)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
flexarray_t *front;
flexarray_t *back;
libxl__device device;
int rc;
front = flexarray_make(16, 1);
if (!front) {
rc = ERROR_NOMEM;
goto out;
}
back = flexarray_make(16, 1);
if (!back) {
rc = ERROR_NOMEM;
goto out_free;
}
device.backend_devid = vfb->devid;
device.backend_domid = vfb->backend_domid;
device.backend_kind = DEVICE_VFB;
device.devid = vfb->devid;
device.domid = vfb->domid;
device.kind = DEVICE_VFB;
flexarray_vappend(back, "frontend-id", libxl__sprintf(&gc, "%d", vfb->domid), NULL);
flexarray_vappend(back, "online", "1", NULL);
flexarray_vappend(back, "state", libxl__sprintf(&gc, "%d", 1), NULL);
flexarray_vappend(back, "domain", libxl__domid_to_name(&gc, domid), NULL);
flexarray_vappend(back, "vnc", libxl__sprintf(&gc, "%d", vfb->vnc), NULL);
flexarray_vappend(back, "vnclisten", vfb->vnclisten, NULL);
flexarray_append(back, "vncpasswd");
flexarray_append(back, vfb->vncpasswd);
flexarray_vappend(back, "vncdisplay", libxl__sprintf(&gc, "%d", vfb->vncdisplay), NULL);
flexarray_vappend(back, "vncunused", libxl__sprintf(&gc, "%d", vfb->vncunused), NULL);
flexarray_vappend(back, "sdl", libxl__sprintf(&gc, "%d", vfb->sdl), NULL);
flexarray_vappend(back, "opengl", libxl__sprintf(&gc, "%d", vfb->opengl), NULL);
if (vfb->xauthority) {
flexarray_vappend(back, "xauthority", vfb->xauthority, NULL);
}
if (vfb->display) {
flexarray_vappend(back, "display", vfb->display, NULL);
}
flexarray_vappend(front, "backend-id", libxl__sprintf(&gc, "%d", vfb->backend_domid), NULL);
flexarray_vappend(front, "state", libxl__sprintf(&gc, "%d", 1), NULL);
libxl__device_generic_add(ctx, &device,
libxl__xs_kvs_of_flexarray(&gc, back, back->count),
libxl__xs_kvs_of_flexarray(&gc, front, front->count));
rc = 0;
out_free:
flexarray_free(front);
flexarray_free(back);
out:
libxl__free_all(&gc);
return rc;
}
int libxl_device_vfb_clean_shutdown(libxl_ctx *ctx, uint32_t domid)
{
return ERROR_NI;
}
int libxl_device_vfb_hard_shutdown(libxl_ctx *ctx, uint32_t domid)
{
return ERROR_NI;
}
/******************************************************************************/
int libxl_domain_setmaxmem(libxl_ctx *ctx, uint32_t domid, uint32_t max_memkb)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
char *mem, *endptr;
uint32_t memorykb;
char *dompath = libxl__xs_get_dompath(&gc, domid);
int rc = 1;
mem = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/memory/target", dompath));
if (!mem) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "cannot get memory info from %s/memory/target\n", dompath);
goto out;
}
memorykb = strtoul(mem, &endptr, 10);
if (*endptr != '\0') {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "invalid memory %s from %s/memory/target\n", mem, dompath);
goto out;
}
if (max_memkb < memorykb) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "memory_static_max must be greater than or or equal to memory_dynamic_max\n");
goto out;
}
rc = 0;
out:
libxl__free_all(&gc);
return rc;
}
static int libxl__fill_dom0_memory_info(libxl__gc *gc, uint32_t *target_memkb)
{
int rc;
libxl_dominfo info;
libxl_physinfo physinfo;
char *target = NULL, *staticmax = NULL, *freememslack = NULL, *endptr = NULL;
char *target_path = "/local/domain/0/memory/target";
char *max_path = "/local/domain/0/memory/static-max";
char *free_mem_slack_path = "/local/domain/0/memory/freemem-slack";
xs_transaction_t t;
libxl_ctx *ctx = libxl__gc_owner(gc);
uint32_t free_mem_slack_kb = 0;
retry_transaction:
t = xs_transaction_start(ctx->xsh);
target = libxl__xs_read(gc, t, target_path);
staticmax = libxl__xs_read(gc, t, max_path);
freememslack = libxl__xs_read(gc, t, free_mem_slack_path);
if (target && staticmax && freememslack) {
rc = 0;
goto out;
}
if (target) {
*target_memkb = strtoul(target, &endptr, 10);
if (*endptr != '\0') {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"invalid memory target %s from %s\n", target, target_path);
rc = ERROR_FAIL;
goto out;
}
}
rc = libxl_domain_info(ctx, &info, 0);
if (rc < 0)
goto out;
rc = libxl_get_physinfo(ctx, &physinfo);
if (rc < 0)
goto out;
if (target == NULL) {
libxl__xs_write(gc, t, target_path, "%"PRIu32,
(uint32_t) info.current_memkb);
*target_memkb = (uint32_t) info.current_memkb;
}
if (staticmax == NULL)
libxl__xs_write(gc, t, max_path, "%"PRIu32,
(uint32_t) info.max_memkb);
if (freememslack == NULL) {
free_mem_slack_kb = (uint32_t) (PAGE_TO_MEMKB(physinfo.total_pages) -
info.current_memkb);
/* From empirical measurements the free_mem_slack shouldn't be more
* than 15% of the total memory present on the system. */
if (free_mem_slack_kb > PAGE_TO_MEMKB(physinfo.total_pages) * 0.15)
free_mem_slack_kb = PAGE_TO_MEMKB(physinfo.total_pages) * 0.15;
libxl__xs_write(gc, t, free_mem_slack_path, "%"PRIu32, free_mem_slack_kb);
}
rc = 0;
out:
if (!xs_transaction_end(ctx->xsh, t, 0)) {
if (errno == EAGAIN)
goto retry_transaction;
else
rc = ERROR_FAIL;
}
return rc;
}
/* returns how much memory should be left free in the system */
static int libxl__get_free_memory_slack(libxl__gc *gc, uint32_t *free_mem_slack)
{
int rc;
char *free_mem_slack_path = "/local/domain/0/memory/freemem-slack";
char *free_mem_slack_s, *endptr;
uint32_t target_memkb;
retry:
free_mem_slack_s = libxl__xs_read(gc, XBT_NULL, free_mem_slack_path);
if (!free_mem_slack_s) {
rc = libxl__fill_dom0_memory_info(gc, &target_memkb);
if (rc < 0)
return rc;
goto retry;
} else {
*free_mem_slack = strtoul(free_mem_slack_s, &endptr, 10);
if (*endptr != '\0') {
LIBXL__LOG_ERRNO(gc->owner, LIBXL__LOG_ERROR,
"invalid free_mem_slack %s from %s\n",
free_mem_slack_s, free_mem_slack_path);
return ERROR_FAIL;
}
}
return 0;
}
int libxl_set_memory_target(libxl_ctx *ctx, uint32_t domid,
int32_t target_memkb, int relative, int enforce)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
int rc = 1, abort = 0;
uint32_t memorykb = 0, videoram = 0;
uint32_t current_target_memkb = 0, new_target_memkb = 0;
char *memmax, *endptr, *videoram_s = NULL, *target = NULL;
char *dompath = libxl__xs_get_dompath(&gc, domid);
xc_domaininfo_t info;
libxl_dominfo ptr;
char *uuid;
xs_transaction_t t;
retry_transaction:
t = xs_transaction_start(ctx->xsh);
target = libxl__xs_read(&gc, t, libxl__sprintf(&gc,
"%s/memory/target", dompath));
if (!target && !domid) {
xs_transaction_end(ctx->xsh, t, 1);
rc = libxl__fill_dom0_memory_info(&gc, &current_target_memkb);
if (rc < 0) {
abort = 1;
goto out;
}
goto retry_transaction;
} else if (!target) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"cannot get target memory info from %s/memory/target\n",
dompath);
abort = 1;
goto out;
} else {
current_target_memkb = strtoul(target, &endptr, 10);
if (*endptr != '\0') {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"invalid memory target %s from %s/memory/target\n",
target, dompath);
abort = 1;
goto out;
}
}
memmax = libxl__xs_read(&gc, t, libxl__sprintf(&gc,
"%s/memory/static-max", dompath));
if (!memmax) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"cannot get memory info from %s/memory/static-max\n",
dompath);
abort = 1;
goto out;
}
memorykb = strtoul(memmax, &endptr, 10);
if (*endptr != '\0') {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"invalid max memory %s from %s/memory/static-max\n",
memmax, dompath);
abort = 1;
goto out;
}
if (relative) {
if (target_memkb < 0 && abs(target_memkb) > current_target_memkb)
new_target_memkb = 0;
else
new_target_memkb = current_target_memkb + target_memkb;
} else
new_target_memkb = target_memkb;
if (new_target_memkb > memorykb) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR,
"memory_dynamic_max must be less than or equal to"
" memory_static_max\n");
abort = 1;
goto out;
}
if (!domid && new_target_memkb < LIBXL_MIN_DOM0_MEM) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR,
"new target %d for dom0 is below the minimum threshold\n",
new_target_memkb);
abort = 1;
goto out;
}
videoram_s = libxl__xs_read(&gc, t, libxl__sprintf(&gc,
"%s/memory/videoram", dompath));
videoram = videoram_s ? atoi(videoram_s) : 0;
if (enforce) {
memorykb = new_target_memkb;
rc = xc_domain_setmaxmem(ctx->xch, domid, memorykb +
LIBXL_MAXMEM_CONSTANT);
if (rc != 0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"xc_domain_setmaxmem domid=%d memkb=%d failed "
"rc=%d\n", domid, memorykb + LIBXL_MAXMEM_CONSTANT, rc);
abort = 1;
goto out;
}
}
new_target_memkb -= videoram;
rc = xc_domain_set_pod_target(ctx->xch, domid,
new_target_memkb / 4, NULL, NULL, NULL);
if (rc != 0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"xc_domain_set_pod_target domid=%d, memkb=%d "
"failed rc=%d\n", domid, new_target_memkb / 4,
rc);
abort = 1;
goto out;
}
libxl__xs_write(&gc, t, libxl__sprintf(&gc, "%s/memory/target",
dompath), "%"PRIu32, new_target_memkb);
rc = xc_domain_getinfolist(ctx->xch, domid, 1, &info);
if (rc != 1 || info.domain != domid) {
abort = 1;
goto out;
}
xcinfo2xlinfo(&info, &ptr);
uuid = libxl__uuid2string(&gc, ptr.uuid);
libxl__xs_write(&gc, t, libxl__sprintf(&gc, "/vm/%s/memory", uuid),
"%"PRIu32, new_target_memkb / 1024);
out:
if (!xs_transaction_end(ctx->xsh, t, abort) && !abort)
if (errno == EAGAIN)
goto retry_transaction;
libxl__free_all(&gc);
return rc;
}
int libxl_get_memory_target(libxl_ctx *ctx, uint32_t domid, uint32_t *out_target)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
int rc = 1;
char *target = NULL, *endptr = NULL;
char *dompath = libxl__xs_get_dompath(&gc, domid);
uint32_t target_memkb;
target = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc,
"%s/memory/target", dompath));
if (!target && !domid) {
rc = libxl__fill_dom0_memory_info(&gc, &target_memkb);
if (rc < 0)
goto out;
} else if (!target) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"cannot get target memory info from %s/memory/target\n",
dompath);
goto out;
} else {
target_memkb = strtoul(target, &endptr, 10);
if (*endptr != '\0') {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"invalid memory target %s from %s/memory/target\n",
target, dompath);
goto out;
}
}
*out_target = target_memkb;
rc = 0;
out:
libxl__free_all(&gc);
return rc;
}
int libxl_domain_need_memory(libxl_ctx *ctx, libxl_domain_build_info *b_info,
libxl_device_model_info *dm_info, uint32_t *need_memkb)
{
*need_memkb = b_info->target_memkb;
if (b_info->hvm) {
*need_memkb += b_info->shadow_memkb + LIBXL_HVM_EXTRA_MEMORY;
if (strstr(dm_info->device_model, "stubdom-dm"))
*need_memkb += 32 * 1024;
} else
*need_memkb += b_info->shadow_memkb + LIBXL_PV_EXTRA_MEMORY;
if (*need_memkb % (2 * 1024))
*need_memkb += (2 * 1024) - (*need_memkb % (2 * 1024));
return 0;
}
int libxl_get_free_memory(libxl_ctx *ctx, uint32_t *memkb)
{
int rc = 0;
libxl_physinfo info;
uint32_t freemem_slack;
libxl__gc gc = LIBXL_INIT_GC(ctx);
rc = libxl_get_physinfo(ctx, &info);
if (rc < 0)
goto out;
rc = libxl__get_free_memory_slack(&gc, &freemem_slack);
if (rc < 0)
goto out;
if ((info.free_pages + info.scrub_pages) * 4 > freemem_slack)
*memkb = (info.free_pages + info.scrub_pages) * 4 - freemem_slack;
else
*memkb = 0;
out:
libxl__free_all(&gc);
return rc;
}
int libxl_wait_for_free_memory(libxl_ctx *ctx, uint32_t domid, uint32_t
memory_kb, int wait_secs)
{
int rc = 0;
libxl_physinfo info;
uint32_t freemem_slack;
libxl__gc gc = LIBXL_INIT_GC(ctx);
rc = libxl__get_free_memory_slack(&gc, &freemem_slack);
if (rc < 0)
goto out;
while (wait_secs > 0) {
rc = libxl_get_physinfo(ctx, &info);
if (rc < 0)
goto out;
if (info.free_pages * 4 - freemem_slack >= memory_kb) {
rc = 0;
goto out;
}
wait_secs--;
sleep(1);
}
rc = ERROR_NOMEM;
out:
libxl__free_all(&gc);
return rc;
}
int libxl_wait_for_memory_target(libxl_ctx *ctx, uint32_t domid, int wait_secs)
{
int rc = 0;
uint32_t target_memkb = 0;
libxl_dominfo info;
do {
wait_secs--;
sleep(1);
rc = libxl_get_memory_target(ctx, domid, &target_memkb);
if (rc < 0)
goto out;
rc = libxl_domain_info(ctx, &info, domid);
if (rc < 0)
return rc;
} while (wait_secs > 0 && info.current_memkb > target_memkb);
if (info.current_memkb <= target_memkb)
rc = 0;
else
rc = ERROR_FAIL;
out:
return 0;
}
int libxl_button_press(libxl_ctx *ctx, uint32_t domid, libxl_button button)
{
int rc = -1;
switch (button) {
case POWER_BUTTON:
rc = xc_domain_send_trigger(ctx->xch, domid, XEN_DOMCTL_SENDTRIGGER_POWER, 0);
break;
case SLEEP_BUTTON:
rc = xc_domain_send_trigger(ctx->xch, domid, XEN_DOMCTL_SENDTRIGGER_SLEEP, 0);
break;
default:
break;
}
return rc;
}
int libxl_get_physinfo(libxl_ctx *ctx, libxl_physinfo *physinfo)
{
xc_physinfo_t xcphysinfo = { 0 };
int rc;
rc = xc_physinfo(ctx->xch, &xcphysinfo);
if (rc != 0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "getting physinfo");
return ERROR_FAIL;
}
physinfo->threads_per_core = xcphysinfo.threads_per_core;
physinfo->cores_per_socket = xcphysinfo.cores_per_socket;
physinfo->max_cpu_id = xcphysinfo.max_cpu_id;
physinfo->nr_cpus = xcphysinfo.nr_cpus;
physinfo->cpu_khz = xcphysinfo.cpu_khz;
physinfo->total_pages = xcphysinfo.total_pages;
physinfo->free_pages = xcphysinfo.free_pages;
physinfo->scrub_pages = xcphysinfo.scrub_pages;
physinfo->nr_nodes = xcphysinfo.nr_nodes;
memcpy(physinfo->hw_cap,xcphysinfo.hw_cap, sizeof(physinfo->hw_cap));
physinfo->phys_cap = xcphysinfo.capabilities;
return 0;
}
int libxl_get_topologyinfo(libxl_ctx *ctx, libxl_topologyinfo *info)
{
xc_topologyinfo_t tinfo;
DECLARE_HYPERCALL_BUFFER(xc_cpu_to_core_t, coremap);
DECLARE_HYPERCALL_BUFFER(xc_cpu_to_socket_t, socketmap);
DECLARE_HYPERCALL_BUFFER(xc_cpu_to_node_t, nodemap);
int i;
int rc = 0;
rc += libxl_cpuarray_alloc(ctx, &info->coremap);
rc += libxl_cpuarray_alloc(ctx, &info->socketmap);
rc += libxl_cpuarray_alloc(ctx, &info->nodemap);
if (rc)
goto fail;
coremap = xc_hypercall_buffer_alloc(ctx->xch, coremap, sizeof(*coremap) * info->coremap.entries);
socketmap = xc_hypercall_buffer_alloc(ctx->xch, socketmap, sizeof(*socketmap) * info->socketmap.entries);
nodemap = xc_hypercall_buffer_alloc(ctx->xch, nodemap, sizeof(*nodemap) * info->nodemap.entries);
if ((coremap == NULL) || (socketmap == NULL) || (nodemap == NULL))
goto fail;
set_xen_guest_handle(tinfo.cpu_to_core, coremap);
set_xen_guest_handle(tinfo.cpu_to_socket, socketmap);
set_xen_guest_handle(tinfo.cpu_to_node, nodemap);
tinfo.max_cpu_index = info->coremap.entries - 1;
if (xc_topologyinfo(ctx->xch, &tinfo) != 0)
goto fail;
for (i = 0; i <= tinfo.max_cpu_index; i++) {
if (i < info->coremap.entries)
info->coremap.array[i] = (coremap[i] == INVALID_TOPOLOGY_ID) ?
LIBXL_CPUARRAY_INVALID_ENTRY : coremap[i];
if (i < info->socketmap.entries)
info->socketmap.array[i] = (socketmap[i] == INVALID_TOPOLOGY_ID) ?
LIBXL_CPUARRAY_INVALID_ENTRY : socketmap[i];
if (i < info->nodemap.entries)
info->nodemap.array[i] = (nodemap[i] == INVALID_TOPOLOGY_ID) ?
LIBXL_CPUARRAY_INVALID_ENTRY : nodemap[i];
}
xc_hypercall_buffer_free(ctx->xch, coremap);
xc_hypercall_buffer_free(ctx->xch, socketmap);
xc_hypercall_buffer_free(ctx->xch, nodemap);
return 0;
fail:
xc_hypercall_buffer_free(ctx->xch, coremap);
xc_hypercall_buffer_free(ctx->xch, socketmap);
xc_hypercall_buffer_free(ctx->xch, nodemap);
libxl_topologyinfo_destroy(info);
return ERROR_FAIL;
}
const libxl_version_info* libxl_get_version_info(libxl_ctx *ctx)
{
union {
xen_extraversion_t xen_extra;
xen_compile_info_t xen_cc;
xen_changeset_info_t xen_chgset;
xen_capabilities_info_t xen_caps;
xen_platform_parameters_t p_parms;
xen_commandline_t xen_commandline;
} u;
long xen_version;
libxl_version_info *info = &ctx->version_info;
if (info->xen_version_extra != NULL)
return info;
xen_version = xc_version(ctx->xch, XENVER_version, NULL);
info->xen_version_major = xen_version >> 16;
info->xen_version_minor = xen_version & 0xFF;
xc_version(ctx->xch, XENVER_extraversion, &u.xen_extra);
info->xen_version_extra = strdup(u.xen_extra);
xc_version(ctx->xch, XENVER_compile_info, &u.xen_cc);
info->compiler = strdup(u.xen_cc.compiler);
info->compile_by = strdup(u.xen_cc.compile_by);
info->compile_domain = strdup(u.xen_cc.compile_domain);
info->compile_date = strdup(u.xen_cc.compile_date);
xc_version(ctx->xch, XENVER_capabilities, &u.xen_caps);
info->capabilities = strdup(u.xen_caps);
xc_version(ctx->xch, XENVER_changeset, &u.xen_chgset);
info->changeset = strdup(u.xen_chgset);
xc_version(ctx->xch, XENVER_platform_parameters, &u.p_parms);
info->virt_start = u.p_parms.virt_start;
info->pagesize = xc_version(ctx->xch, XENVER_pagesize, NULL);
xc_version(ctx->xch, XENVER_commandline, &u.xen_commandline);
info->commandline = strdup(u.xen_commandline);
return info;
}
libxl_vcpuinfo *libxl_list_vcpu(libxl_ctx *ctx, uint32_t domid,
int *nb_vcpu, int *nrcpus)
{
libxl_vcpuinfo *ptr, *ret;
xc_domaininfo_t domaininfo;
xc_vcpuinfo_t vcpuinfo;
if (xc_domain_getinfolist(ctx->xch, domid, 1, &domaininfo) != 1) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "getting infolist");
return NULL;
}
*nrcpus = libxl_get_max_cpus(ctx);
ret = ptr = calloc(domaininfo.max_vcpu_id + 1, sizeof (libxl_vcpuinfo));
if (!ptr) {
return NULL;
}
for (*nb_vcpu = 0; *nb_vcpu <= domaininfo.max_vcpu_id; ++*nb_vcpu, ++ptr) {
if (libxl_cpumap_alloc(ctx, &ptr->cpumap)) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "allocating cpumap");
return NULL;
}
if (xc_vcpu_getinfo(ctx->xch, domid, *nb_vcpu, &vcpuinfo) == -1) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "getting vcpu info");
return NULL;
}
if (xc_vcpu_getaffinity(ctx->xch, domid, *nb_vcpu, ptr->cpumap.map) == -1) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "getting vcpu affinity");
return NULL;
}
ptr->vcpuid = *nb_vcpu;
ptr->cpu = vcpuinfo.cpu;
ptr->online = !!vcpuinfo.online;
ptr->blocked = !!vcpuinfo.blocked;
ptr->running = !!vcpuinfo.running;
ptr->vcpu_time = vcpuinfo.cpu_time;
}
return ret;
}
int libxl_set_vcpuaffinity(libxl_ctx *ctx, uint32_t domid, uint32_t vcpuid,
libxl_cpumap *cpumap)
{
if (xc_vcpu_setaffinity(ctx->xch, domid, vcpuid, cpumap->map)) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "setting vcpu affinity");
return ERROR_FAIL;
}
return 0;
}
int libxl_set_vcpuonline(libxl_ctx *ctx, uint32_t domid, libxl_cpumap *cpumap)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
libxl_dominfo info;
char *dompath;
xs_transaction_t t;
int i, rc = ERROR_FAIL;
if (libxl_domain_info(ctx, &info, domid) < 0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "getting domain info list");
goto out;
}
if (!(dompath = libxl__xs_get_dompath(&gc, domid)))
goto out;
retry_transaction:
t = xs_transaction_start(ctx->xsh);
for (i = 0; i <= info.vcpu_max_id; i++)
libxl__xs_write(&gc, t,
libxl__sprintf(&gc, "%s/cpu/%u/availability", dompath, i),
"%s", libxl_cpumap_test(cpumap, i) ? "online" : "offline");
if (!xs_transaction_end(ctx->xsh, t, 0)) {
if (errno == EAGAIN)
goto retry_transaction;
} else
rc = 0;
out:
libxl__free_all(&gc);
return rc;
}
/*
* returns one of the XEN_SCHEDULER_* constants from public/domctl.h
*/
int libxl_get_sched_id(libxl_ctx *ctx)
{
int sched, ret;
if ((ret = xc_sched_id(ctx->xch, &sched)) != 0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "getting domain info list");
return ERROR_FAIL;
}
return sched;
}
int libxl_sched_credit_domain_get(libxl_ctx *ctx, uint32_t domid, libxl_sched_credit *scinfo)
{
struct xen_domctl_sched_credit sdom;
int rc;
rc = xc_sched_credit_domain_get(ctx->xch, domid, &sdom);
if (rc != 0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "setting domain sched credit");
return ERROR_FAIL;
}
scinfo->weight = sdom.weight;
scinfo->cap = sdom.cap;
return 0;
}
int libxl_sched_credit_domain_set(libxl_ctx *ctx, uint32_t domid, libxl_sched_credit *scinfo)
{
struct xen_domctl_sched_credit sdom;
xc_domaininfo_t domaininfo;
int rc;
rc = xc_domain_getinfolist(ctx->xch, domid, 1, &domaininfo);
if (rc < 0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "getting domain info list");
return ERROR_FAIL;
}
if (rc != 1 || domaininfo.domain != domid)
return ERROR_INVAL;
if (scinfo->weight < 1 || scinfo->weight > 65535) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Cpu weight out of range, valid values are within range from 1 to 65535");
return ERROR_INVAL;
}
if (scinfo->cap < 0 || scinfo->cap > (domaininfo.max_vcpu_id + 1) * 100) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Cpu cap out of range, valid range is from 0 to %d for specified number of vcpus",
((domaininfo.max_vcpu_id + 1) * 100));
return ERROR_INVAL;
}
sdom.weight = scinfo->weight;
sdom.cap = scinfo->cap;
rc = xc_sched_credit_domain_set(ctx->xch, domid, &sdom);
if ( rc < 0 ) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "setting domain sched credit");
return ERROR_FAIL;
}
return 0;
}
static int trigger_type_from_string(char *trigger_name)
{
if (!strcmp(trigger_name, "nmi"))
return XEN_DOMCTL_SENDTRIGGER_NMI;
else if (!strcmp(trigger_name, "reset"))
return XEN_DOMCTL_SENDTRIGGER_RESET;
else if (!strcmp(trigger_name, "init"))
return XEN_DOMCTL_SENDTRIGGER_INIT;
else if (!strcmp(trigger_name, "power"))
return XEN_DOMCTL_SENDTRIGGER_POWER;
else if (!strcmp(trigger_name, "sleep"))
return XEN_DOMCTL_SENDTRIGGER_SLEEP;
else
return -1;
}
int libxl_send_trigger(libxl_ctx *ctx, uint32_t domid, char *trigger_name, uint32_t vcpuid)
{
int rc = -1;
int trigger_type = -1;
if (!strcmp(trigger_name, "s3resume")) {
xc_set_hvm_param(ctx->xch, domid, HVM_PARAM_ACPI_S_STATE, 0);
return 0;
}
trigger_type = trigger_type_from_string(trigger_name);
if (trigger_type == -1) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, -1,
"Invalid trigger, valid triggers are <nmi|reset|init|power|sleep>");
return ERROR_INVAL;
}
rc = xc_domain_send_trigger(ctx->xch, domid, trigger_type, vcpuid);
if (rc != 0) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Send trigger '%s' failed", trigger_name);
return ERROR_FAIL;
}
return 0;
}
int libxl_send_sysrq(libxl_ctx *ctx, uint32_t domid, char sysrq)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
char *dompath = libxl__xs_get_dompath(&gc, domid);
libxl__xs_write(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/control/sysrq", dompath), "%c", sysrq);
libxl__free_all(&gc);
return 0;
}
int libxl_send_debug_keys(libxl_ctx *ctx, char *keys)
{
int ret;
ret = xc_send_debug_keys(ctx->xch, keys);
if ( ret < 0 ) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "sending debug keys");
return ERROR_FAIL;
}
return 0;
}
libxl_xen_console_reader *
libxl_xen_console_read_start(libxl_ctx *ctx, int clear)
{
libxl_xen_console_reader *cr;
unsigned int size = 16384;
char *buf = malloc(size);
if (!buf) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "cannot malloc buffer for libxl_xen_console_reader,"
" size is %u", size);
return NULL;
}
cr = malloc(sizeof(libxl_xen_console_reader));
if (!cr) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "cannot malloc libxl_xen_console_reader");
return NULL;
}
memset(cr, 0, sizeof(libxl_xen_console_reader));
cr->buffer = buf;
cr->size = size;
cr->count = size;
cr->clear = clear;
cr->incremental = 1;
return cr;
}
/* return values: *line_r
* 1 success, whole line obtained from buffer non-0
* 0 no more lines available right now 0
* negative error code ERROR_* 0
* On success *line_r is updated to point to a nul-terminated
* string which is valid until the next call on the same console
* reader. The libxl caller may overwrite parts of the string
* if it wishes. */
int libxl_xen_console_read_line(libxl_ctx *ctx,
libxl_xen_console_reader *cr,
char **line_r)
{
int ret;
memset(cr->buffer, 0, cr->size);
ret = xc_readconsolering(ctx->xch, cr->buffer, &cr->count,
cr->clear, cr->incremental, &cr->index);
if (ret < 0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "reading console ring buffer");
return ERROR_FAIL;
}
if (!ret) {
if (cr->count) {
*line_r = cr->buffer;
ret = 1;
} else {
*line_r = NULL;
ret = 0;
}
}
return ret;
}
void libxl_xen_console_read_finish(libxl_ctx *ctx,
libxl_xen_console_reader *cr)
{
free(cr->buffer);
free(cr);
}
uint32_t libxl_vm_get_start_time(libxl_ctx *ctx, uint32_t domid)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
char *dompath = libxl__xs_get_dompath(&gc, domid);
char *vm_path, *start_time;
uint32_t ret;
vm_path = libxl__xs_read(
&gc, XBT_NULL, libxl__sprintf(&gc, "%s/vm", dompath));
start_time = libxl__xs_read(
&gc, XBT_NULL, libxl__sprintf(&gc, "%s/start_time", vm_path));
if (start_time == NULL) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, -1,
"Can't get start time of domain '%d'", domid);
ret = -1;
}else{
ret = strtoul(start_time, NULL, 10);
}
libxl__free_all(&gc);
return ret;
}
char *libxl_tmem_list(libxl_ctx *ctx, uint32_t domid, int use_long)
{
int rc;
char _buf[32768];
rc = xc_tmem_control(ctx->xch, -1, TMEMC_LIST, domid, 32768, use_long,
0, _buf);
if (rc < 0) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Can not get tmem list");
return NULL;
}
return strdup(_buf);
}
int libxl_tmem_freeze(libxl_ctx *ctx, uint32_t domid)
{
int rc;
rc = xc_tmem_control(ctx->xch, -1, TMEMC_FREEZE, domid, 0, 0,
0, NULL);
if (rc < 0) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Can not freeze tmem pools");
return ERROR_FAIL;
}
return rc;
}
int libxl_tmem_destroy(libxl_ctx *ctx, uint32_t domid)
{
int rc;
rc = xc_tmem_control(ctx->xch, -1, TMEMC_DESTROY, domid, 0, 0,
0, NULL);
if (rc < 0) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Can not destroy tmem pools");
return ERROR_FAIL;
}
return rc;
}
int libxl_tmem_thaw(libxl_ctx *ctx, uint32_t domid)
{
int rc;
rc = xc_tmem_control(ctx->xch, -1, TMEMC_THAW, domid, 0, 0,
0, NULL);
if (rc < 0) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Can not thaw tmem pools");
return ERROR_FAIL;
}
return rc;
}
static int32_t tmem_setop_from_string(char *set_name)
{
if (!strcmp(set_name, "weight"))
return TMEMC_SET_WEIGHT;
else if (!strcmp(set_name, "cap"))
return TMEMC_SET_CAP;
else if (!strcmp(set_name, "compress"))
return TMEMC_SET_COMPRESS;
else
return -1;
}
int libxl_tmem_set(libxl_ctx *ctx, uint32_t domid, char* name, uint32_t set)
{
int rc;
int32_t subop = tmem_setop_from_string(name);
if (subop == -1) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, -1,
"Invalid set, valid sets are <weight|cap|compress>");
return ERROR_INVAL;
}
rc = xc_tmem_control(ctx->xch, -1, subop, domid, set, 0, 0, NULL);
if (rc < 0) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Can not set tmem %s", name);
return ERROR_FAIL;
}
return rc;
}
int libxl_tmem_shared_auth(libxl_ctx *ctx, uint32_t domid,
char* uuid, int auth)
{
int rc;
rc = xc_tmem_auth(ctx->xch, domid, uuid, auth);
if (rc < 0) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Can not set tmem shared auth");
return ERROR_FAIL;
}
return rc;
}
int libxl_tmem_freeable(libxl_ctx *ctx)
{
int rc;
rc = xc_tmem_control(ctx->xch, -1, TMEMC_QUERY_FREEABLE_MB, -1, 0, 0, 0, 0);
if (rc < 0) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Can not get tmem freeable memory");
return ERROR_FAIL;
}
return rc;
}
void libxl_file_reference_destroy(libxl_file_reference *f)
{
libxl__file_reference_unmap(f);
free(f->path);
}
int libxl_get_freecpus(libxl_ctx *ctx, libxl_cpumap *cpumap)
{
int ncpus;
ncpus = libxl_get_max_cpus(ctx);
if (ncpus == 0)
return ERROR_FAIL;
cpumap->map = xc_cpupool_freeinfo(ctx->xch);
if (cpumap->map == NULL)
return ERROR_FAIL;
cpumap->size = (ncpus + 7) / 8;
return 0;
}
int libxl_create_cpupool(libxl_ctx *ctx, const char *name, int schedid,
libxl_cpumap cpumap, libxl_uuid *uuid,
uint32_t *poolid)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
int rc;
int i;
xs_transaction_t t;
char *uuid_string;
uuid_string = libxl__uuid2string(&gc, *uuid);
if (!uuid_string) {
libxl__free_all(&gc);
return ERROR_NOMEM;
}
rc = xc_cpupool_create(ctx->xch, poolid, schedid);
if (rc) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Could not create cpupool");
libxl__free_all(&gc);
return ERROR_FAIL;
}
libxl_for_each_cpu(i, cpumap)
if (libxl_cpumap_test(&cpumap, i)) {
rc = xc_cpupool_addcpu(ctx->xch, *poolid, i);
if (rc) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Error moving cpu to cpupool");
libxl_destroy_cpupool(ctx, *poolid);
libxl__free_all(&gc);
return ERROR_FAIL;
}
}
for (;;) {
t = xs_transaction_start(ctx->xsh);
xs_mkdir(ctx->xsh, t, libxl__sprintf(&gc, "/local/pool/%d", *poolid));
libxl__xs_write(&gc, t,
libxl__sprintf(&gc, "/local/pool/%d/uuid", *poolid),
"%s", uuid_string);
libxl__xs_write(&gc, t,
libxl__sprintf(&gc, "/local/pool/%d/name", *poolid),
"%s", name);
if (xs_transaction_end(ctx->xsh, t, 0) || (errno != EAGAIN)) {
libxl__free_all(&gc);
return 0;
}
}
}
int libxl_destroy_cpupool(libxl_ctx *ctx, uint32_t poolid)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
int rc, i;
xc_cpupoolinfo_t *info;
xs_transaction_t t;
libxl_cpumap cpumap;
info = xc_cpupool_getinfo(ctx->xch, poolid);
if (info == NULL) {
libxl__free_all(&gc);
return ERROR_NOMEM;
}
rc = ERROR_INVAL;
if ((info->cpupool_id != poolid) || (info->n_dom))
goto out;
rc = ERROR_NOMEM;
if (libxl_cpumap_alloc(ctx, &cpumap))
goto out;
memcpy(cpumap.map, info->cpumap, cpumap.size);
libxl_for_each_cpu(i, cpumap)
if (libxl_cpumap_test(&cpumap, i)) {
rc = xc_cpupool_removecpu(ctx->xch, poolid, i);
if (rc) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Error removing cpu from cpupool");
rc = ERROR_FAIL;
goto out1;
}
}
rc = xc_cpupool_destroy(ctx->xch, poolid);
if (rc) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc, "Could not destroy cpupool");
rc = ERROR_FAIL;
goto out1;
}
for (;;) {
t = xs_transaction_start(ctx->xsh);
xs_rm(ctx->xsh, XBT_NULL, libxl__sprintf(&gc, "/local/pool/%d", poolid));
if (xs_transaction_end(ctx->xsh, t, 0) || (errno != EAGAIN))
break;
}
rc = 0;
out1:
libxl_cpumap_destroy(&cpumap);
out:
xc_cpupool_infofree(ctx->xch, info);
libxl__free_all(&gc);
return rc;
}
int libxl_cpupool_rename(libxl_ctx *ctx, const char *name, uint32_t poolid)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
xs_transaction_t t;
xc_cpupoolinfo_t *info;
int rc;
info = xc_cpupool_getinfo(ctx->xch, poolid);
if (info == NULL) {
libxl__free_all(&gc);
return ERROR_NOMEM;
}
rc = ERROR_INVAL;
if (info->cpupool_id != poolid)
goto out;
rc = 0;
for (;;) {
t = xs_transaction_start(ctx->xsh);
libxl__xs_write(&gc, t,
libxl__sprintf(&gc, "/local/pool/%d/name", poolid),
"%s", name);
if (xs_transaction_end(ctx->xsh, t, 0))
break;
if (errno == EAGAIN)
continue;
rc = ERROR_FAIL;
break;
}
out:
xc_cpupool_infofree(ctx->xch, info);
libxl__free_all(&gc);
return rc;
}
int libxl_cpupool_cpuadd(libxl_ctx *ctx, uint32_t poolid, int cpu)
{
int rc;
rc = xc_cpupool_addcpu(ctx->xch, poolid, cpu);
if (rc) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Error moving cpu to cpupool");
return ERROR_FAIL;
}
return 0;
}
int libxl_cpupool_cpuadd_node(libxl_ctx *ctx, uint32_t poolid, int node, int *cpus)
{
int rc = 0;
int cpu;
libxl_cpumap freemap;
libxl_topologyinfo topology;
if (libxl_get_freecpus(ctx, &freemap)) {
return ERROR_FAIL;
}
if (libxl_get_topologyinfo(ctx, &topology)) {
rc = ERROR_FAIL;
goto out;
}
*cpus = 0;
for (cpu = 0; cpu < topology.nodemap.entries; cpu++) {
if (libxl_cpumap_test(&freemap, cpu) &&
(topology.nodemap.array[cpu] == node) &&
!libxl_cpupool_cpuadd(ctx, poolid, cpu)) {
(*cpus)++;
}
}
libxl_topologyinfo_destroy(&topology);
out:
libxl_cpumap_destroy(&freemap);
return rc;
}
int libxl_cpupool_cpuremove(libxl_ctx *ctx, uint32_t poolid, int cpu)
{
int rc;
rc = xc_cpupool_removecpu(ctx->xch, poolid, cpu);
if (rc) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Error removing cpu from cpupool");
return ERROR_FAIL;
}
return 0;
}
int libxl_cpupool_cpuremove_node(libxl_ctx *ctx, uint32_t poolid, int node, int *cpus)
{
int ret = 0;
int n_pools;
int p;
int cpu;
libxl_topologyinfo topology;
libxl_cpupoolinfo *poolinfo;
poolinfo = libxl_list_cpupool(ctx, &n_pools);
if (!poolinfo) {
return ERROR_NOMEM;
}
if (libxl_get_topologyinfo(ctx, &topology)) {
ret = ERROR_FAIL;
goto out;
}
*cpus = 0;
for (p = 0; p < n_pools; p++) {
if (poolinfo[p].poolid == poolid) {
for (cpu = 0; cpu < topology.nodemap.entries; cpu++) {
if ((topology.nodemap.array[cpu] == node) &&
libxl_cpumap_test(&poolinfo[p].cpumap, cpu) &&
!libxl_cpupool_cpuremove(ctx, poolid, cpu)) {
(*cpus)++;
}
}
}
}
libxl_topologyinfo_destroy(&topology);
out:
for (p = 0; p < n_pools; p++) {
libxl_cpupoolinfo_destroy(poolinfo + p);
}
return ret;
}
int libxl_cpupool_movedomain(libxl_ctx *ctx, uint32_t poolid, uint32_t domid)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
int rc;
char *dom_path;
char *vm_path;
char *poolname;
xs_transaction_t t;
dom_path = libxl__xs_get_dompath(&gc, domid);
if (!dom_path) {
libxl__free_all(&gc);
return ERROR_FAIL;
}
rc = xc_cpupool_movedomain(ctx->xch, poolid, domid);
if (rc) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Error moving domain to cpupool");
libxl__free_all(&gc);
return ERROR_FAIL;
}
for (;;) {
t = xs_transaction_start(ctx->xsh);
poolname = libxl__cpupoolid_to_name(&gc, poolid);
vm_path = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/vm", dom_path));
if (!vm_path)
break;
libxl__xs_write(&gc, t, libxl__sprintf(&gc, "%s/pool_name", vm_path),
"%s", poolname);
if (xs_transaction_end(ctx->xsh, t, 0) || (errno != EAGAIN))
break;
}
libxl__free_all(&gc);
return 0;
}
Reference in new issue View Git Blame Copy Permalink