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d8fd4c367894de914b10dc6855ccc1a39e4a0a9a
xen/tools/libxl/libxl.c
T
Jan Beulich 6cf4c493d1 xl block-detach: allow other than numeric-decimal specification of the disk 
... to be in sync with block-attach.  And rename the function.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
2012-03-13 17:11:09 +00:00

3903 lines
112 KiB
C
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/*
* 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 "libxl_internal.h"
#define PAGE_TO_MEMKB(pages) ((pages) * 4)
#define BACKEND_STRING_SIZE 5
int libxl_ctx_alloc(libxl_ctx **pctx, int version,
unsigned flags, xentoollog_logger * lg)
{
libxl_ctx *ctx = NULL;
struct stat stat_buf;
int rc;
if (version != LIBXL_VERSION) { rc = ERROR_VERSION; goto out; }
ctx = malloc(sizeof(*ctx));
if (!ctx) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "Failed to allocate context\n");
rc = ERROR_NOMEM; goto out;
}
memset(ctx, 0, sizeof(libxl_ctx));
ctx->lg = lg;
if (libxl__init_recursive_mutex(ctx, &ctx->lock) < 0) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "Failed to initialize mutex");
return ERROR_FAIL;
}
LIBXL_TAILQ_INIT(&ctx->occurred);
ctx->osevent_hooks = 0;
LIBXL_LIST_INIT(&ctx->pollers_event);
LIBXL_LIST_INIT(&ctx->pollers_idle);
LIBXL_LIST_INIT(&ctx->efds);
LIBXL_TAILQ_INIT(&ctx->etimes);
ctx->watch_slots = 0;
LIBXL_SLIST_INIT(&ctx->watch_freeslots);
libxl__ev_fd_init(&ctx->watch_efd);
LIBXL_TAILQ_INIT(&ctx->death_list);
libxl__ev_xswatch_init(&ctx->death_watch);
rc = libxl__poller_init(ctx, &ctx->poller_app);
if (rc) goto out;
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);
rc = ERROR_FAIL; goto out;
}
ctx->xch = xc_interface_open(lg,lg,0);
if (!ctx->xch) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, errno,
"cannot open libxc handle");
rc = ERROR_FAIL; goto out;
}
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");
rc = ERROR_FAIL; goto out;
}
*pctx = ctx;
return 0;
out:
libxl_ctx_free(ctx);
*pctx = NULL;
return rc;
}
static void free_disable_deaths(libxl__gc *gc,
struct libxl__evgen_domain_death_list *l) {
libxl_evgen_domain_death *death;
while ((death = LIBXL_TAILQ_FIRST(l)))
libxl__evdisable_domain_death(gc, death);
}
static void discard_events(struct libxl__event_list *l) {
/* doesn't bother unlinking from the list, so l is corrupt on return */
libxl_event *ev;
LIBXL_TAILQ_FOREACH(ev, l, link)
libxl_event_free(0, ev);
}
int libxl_ctx_free(libxl_ctx *ctx)
{
if (!ctx) return 0;
int i;
GC_INIT(ctx);
/* Deregister all libxl__ev_KINDs: */
free_disable_deaths(gc, &CTX->death_list);
free_disable_deaths(gc, &CTX->death_reported);
libxl_evgen_disk_eject *eject;
while ((eject = LIBXL_LIST_FIRST(&CTX->disk_eject_evgens)))
libxl__evdisable_disk_eject(gc, eject);
for (i = 0; i < ctx->watch_nslots; i++)
assert(!libxl__watch_slot_contents(gc, i));
libxl__ev_fd_deregister(gc, &ctx->watch_efd);
/* Now there should be no more events requested from the application: */
assert(LIBXL_LIST_EMPTY(&ctx->efds));
assert(LIBXL_TAILQ_EMPTY(&ctx->etimes));
if (ctx->xch) xc_interface_close(ctx->xch);
libxl_version_info_dispose(&ctx->version_info);
if (ctx->xsh) xs_daemon_close(ctx->xsh);
libxl__poller_dispose(&ctx->poller_app);
assert(LIBXL_LIST_EMPTY(&ctx->pollers_event));
libxl__poller *poller, *poller_tmp;
LIBXL_LIST_FOREACH_SAFE(poller, &ctx->pollers_idle, entry, poller_tmp) {
libxl__poller_dispose(poller);
free(poller);
}
free(ctx->watch_slots);
discard_events(&ctx->occurred);
GC_FREE;
free(ctx);
return 0;
}
void libxl_string_list_dispose(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_dispose(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);
}
#define LIBXL__DEFBOOL_DEFAULT (0)
#define LIBXL__DEFBOOL_FALSE (-1)
#define LIBXL__DEFBOOL_TRUE (1)
void libxl_defbool_set(libxl_defbool *db, bool b)
{
db->val = b ? LIBXL__DEFBOOL_TRUE : LIBXL__DEFBOOL_FALSE;
}
void libxl_defbool_unset(libxl_defbool *db)
{
db->val = LIBXL__DEFBOOL_DEFAULT;
}
bool libxl_defbool_is_default(libxl_defbool db)
{
return !db.val;
}
void libxl_defbool_setdefault(libxl_defbool *db, bool b)
{
if (libxl_defbool_is_default(*db))
libxl_defbool_set(db, b);
}
bool libxl_defbool_val(libxl_defbool db)
{
assert(!libxl_defbool_is_default(db));
return db.val > 0;
}
const char *libxl_defbool_to_string(libxl_defbool b)
{
if (b.val < 0)
return "False";
else if (b.val > 0)
return "True";
else
return "<default>";
}
/******************************************************************************/
int libxl__domain_rename(libxl__gc *gc, uint32_t domid,
const char *old_name, const char *new_name,
xs_transaction_t trans)
{
libxl_ctx *ctx = libxl__gc_owner(gc);
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);
return rc;
x_fail: rc = ERROR_FAIL; goto x_rc;
x_nomem: rc = ERROR_NOMEM; goto x_rc;
}
int libxl_domain_rename(libxl_ctx *ctx, uint32_t domid,
const char *old_name, const char *new_name)
{
GC_INIT(ctx);
int rc;
rc = libxl__domain_rename(gc, domid, old_name, new_name, XBT_NULL);
GC_FREE;
return rc;
}
int libxl_domain_resume(libxl_ctx *ctx, uint32_t domid)
{
GC_INIT(ctx);
int rc = 0;
if (LIBXL__DOMAIN_IS_TYPE(gc, domid, HVM)) {
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:
GC_FREE;
return rc;
}
/*
* 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)
{
GC_INIT(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) {
GC_FREE;
return ERROR_NOMEM;
}
uuid_string = libxl__uuid2string(gc, new_uuid);
if (!uuid_string) {
GC_FREE;
return ERROR_NOMEM;
}
dom_path = libxl__xs_get_dompath(gc, domid);
if (!dom_path) {
GC_FREE;
return ERROR_FAIL;
}
vm_path = libxl__sprintf(gc, "/vm/%s", uuid_string);
if (!vm_path) {
GC_FREE;
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(gc, domid, info->name, preserved_name, t);
if (rc) {
GC_FREE;
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;
GC_FREE;
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->ssidref = xcinfo->ssidref;
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->shared_memkb = PAGE_TO_MEMKB(xcinfo->shr_pages);
xlinfo->paged_memkb = PAGE_TO_MEMKB(xcinfo->paged_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;
xlinfo->cpupool = xcinfo->cpupool;
}
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");
free(ptr);
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;
if (info_r)
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 = 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_vminfo));
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)
{
GC_INIT(ctx);
libxl_domain_type type = libxl__domain_type(gc, 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(gc, domid, fd, type, live, debug);
if (!rc && type == LIBXL_DOMAIN_TYPE_HVM)
rc = libxl__domain_save_device_model(gc, domid, fd);
GC_FREE;
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)
{
GC_INIT(ctx);
char *path;
char *state;
int ret, rc = 0;
if (LIBXL__DOMAIN_IS_TYPE(gc, domid, HVM)) {
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__qemu_traditional_cmd(gc, domid, "continue");
libxl__wait_for_device_model(gc, domid, "running",
NULL, 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;
}
GC_FREE;
return rc;
}
int libxl__domain_pvcontrol_available(libxl__gc *gc, uint32_t domid)
{
libxl_ctx *ctx = libxl__gc_owner(gc);
unsigned long pvdriver = 0;
int ret;
if (LIBXL__DOMAIN_IS_TYPE(gc, domid, PV))
return 1;
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");
return ERROR_FAIL;
}
return !!pvdriver;
}
char * libxl__domain_pvcontrol_read(libxl__gc *gc, xs_transaction_t t,
uint32_t domid)
{
const char *shutdown_path;
const char *dom_path;
dom_path = libxl__xs_get_dompath(gc, domid);
if (!dom_path)
return NULL;
shutdown_path = libxl__sprintf(gc, "%s/control/shutdown", dom_path);
if (!shutdown_path)
return NULL;
return libxl__xs_read(gc, t, shutdown_path);
}
int libxl__domain_pvcontrol_write(libxl__gc *gc, xs_transaction_t t,
uint32_t domid, const char *cmd)
{
const char *shutdown_path;
const char *dom_path;
dom_path = libxl__xs_get_dompath(gc, domid);
if (!dom_path)
return ERROR_FAIL;
shutdown_path = libxl__sprintf(gc, "%s/control/shutdown", dom_path);
if (!shutdown_path)
return ERROR_FAIL;
return libxl__xs_write(gc, t, shutdown_path, "%s", cmd);
}
static int libxl__domain_pvcontrol(libxl__gc *gc, uint32_t domid,
const char *cmd)
{
int ret;
ret = libxl__domain_pvcontrol_available(gc, domid);
if (ret < 0)
return ret;
if (!ret)
return ERROR_NOPARAVIRT;
return libxl__domain_pvcontrol_write(gc, XBT_NULL, domid, cmd);
}
int libxl_domain_shutdown(libxl_ctx *ctx, uint32_t domid)
{
GC_INIT(ctx);
int ret;
ret = libxl__domain_pvcontrol(gc, domid, "poweroff");
GC_FREE;
return ret;
}
int libxl_domain_reboot(libxl_ctx *ctx, uint32_t domid)
{
GC_INIT(ctx);
int ret;
ret = libxl__domain_pvcontrol(gc, domid, "reboot");
GC_FREE;
return ret;
}
static void domain_death_occurred(libxl__egc *egc,
libxl_evgen_domain_death **evg_upd,
const char *why) {
/* Removes **evg_upd from death_list and puts it on death_reported
* and advances *evg_upd to the next entry.
* Call sites in domain_death_xswatch_callback must use "continue". */
EGC_GC;
libxl_evgen_domain_death *const evg = *evg_upd;
LIBXL__LOG(CTX, LIBXL__LOG_DEBUG, "%s", why);
libxl_evgen_domain_death *evg_next = LIBXL_TAILQ_NEXT(evg, entry);
*evg_upd = evg_next;
libxl_event *ev = NEW_EVENT(egc, DOMAIN_DEATH, evg->domid);
if (!ev) return;
libxl__event_occurred(egc, ev);
evg->death_reported = 1;
LIBXL_TAILQ_REMOVE(&CTX->death_list, evg, entry);
LIBXL_TAILQ_INSERT_HEAD(&CTX->death_reported, evg, entry);
}
static void domain_death_xswatch_callback(libxl__egc *egc, libxl__ev_xswatch *w,
const char *wpath, const char *epath) {
EGC_GC;
libxl_evgen_domain_death *evg;
uint32_t domid;
int rc;
CTX_LOCK;
evg = LIBXL_TAILQ_FIRST(&CTX->death_list);
if (!evg) goto out;
domid = evg->domid;
for (;;) {
int nentries = LIBXL_TAILQ_NEXT(evg, entry) ? 200 : 1;
xc_domaininfo_t domaininfos[nentries];
const xc_domaininfo_t *got = domaininfos, *gotend;
rc = xc_domain_getinfolist(CTX->xch, domid, nentries, domaininfos);
if (rc == -1) {
LIBXL__EVENT_DISASTER(egc, "xc_domain_getinfolist failed while"
" processing @releaseDomain watch event",
errno, 0);
goto out;
}
gotend = &domaininfos[rc];
LIBXL__LOG(CTX, LIBXL__LOG_DEBUG, "[evg=%p:%"PRIu32"]"
" from domid=%"PRIu32" nentries=%d rc=%d",
evg, evg->domid, domid, nentries, rc);
for (;;) {
if (!evg) {
LIBXL__LOG(CTX, LIBXL__LOG_DEBUG, "[evg=0] all reported");
goto all_reported;
}
LIBXL__LOG(CTX, LIBXL__LOG_DEBUG, "[evg=%p:%"PRIu32"]"
" got=domaininfos[%d] got->domain=%ld",
evg, evg->domid, (int)(got - domaininfos),
got < gotend ? (long)got->domain : -1L);
if (!rc) {
domain_death_occurred(egc, &evg, "empty list");
continue;
}
if (got == gotend) {
LIBXL__LOG(CTX, LIBXL__LOG_DEBUG, " got==gotend");
break;
}
if (got->domain > evg->domid) {
/* ie, the list doesn't contain evg->domid any more so
* the domain has been destroyed */
domain_death_occurred(egc, &evg, "missing from list");
continue;
}
if (got->domain < evg->domid) {
got++;
continue;
}
assert(evg->domid == got->domain);
LIBXL__LOG(CTX, LIBXL__LOG_DEBUG, " exists shutdown_reported=%d"
" dominf.flags=%x",
evg->shutdown_reported, got->flags);
if (got->flags & XEN_DOMINF_dying) {
domain_death_occurred(egc, &evg, "dying");
continue;
}
if (!evg->shutdown_reported &&
(got->flags & XEN_DOMINF_shutdown)) {
libxl_event *ev = NEW_EVENT(egc, DOMAIN_SHUTDOWN, got->domain);
if (!ev) goto out;
LIBXL__LOG(CTX, LIBXL__LOG_DEBUG, " shutdown reporting");
ev->u.domain_shutdown.shutdown_reason =
(got->flags >> XEN_DOMINF_shutdownshift) &
XEN_DOMINF_shutdownmask;
libxl__event_occurred(egc, ev);
evg->shutdown_reported = 1;
}
evg = LIBXL_TAILQ_NEXT(evg, entry);
}
assert(rc); /* rc==0 results in us eating all evgs and quitting */
domid = gotend[-1].domain;
}
all_reported:
out:
LIBXL__LOG(CTX, LIBXL__LOG_DEBUG, "domain death search done");
CTX_UNLOCK;
}
int libxl_evenable_domain_death(libxl_ctx *ctx, uint32_t domid,
libxl_ev_user user, libxl_evgen_domain_death **evgen_out) {
GC_INIT(ctx);
libxl_evgen_domain_death *evg, *evg_search;
int rc;
CTX_LOCK;
evg = malloc(sizeof(*evg)); if (!evg) { rc = ERROR_NOMEM; goto out; }
memset(evg, 0, sizeof(*evg));
evg->domid = domid;
evg->user = user;
LIBXL_TAILQ_INSERT_SORTED(&ctx->death_list, entry, evg, evg_search, ,
evg->domid > evg_search->domid);
if (!libxl__ev_xswatch_isregistered(&ctx->death_watch)) {
rc = libxl__ev_xswatch_register(gc, &ctx->death_watch,
domain_death_xswatch_callback, "@releaseDomain");
if (rc) { libxl__evdisable_domain_death(gc, evg); goto out; }
}
*evgen_out = evg;
rc = 0;
out:
CTX_UNLOCK;
GC_FREE;
return rc;
};
void libxl__evdisable_domain_death(libxl__gc *gc,
libxl_evgen_domain_death *evg) {
CTX_LOCK;
if (!evg->death_reported)
LIBXL_TAILQ_REMOVE(&CTX->death_list, evg, entry);
else
LIBXL_TAILQ_REMOVE(&CTX->death_reported, evg, entry);
free(evg);
if (!LIBXL_TAILQ_FIRST(&CTX->death_list) &&
libxl__ev_xswatch_isregistered(&CTX->death_watch))
libxl__ev_xswatch_deregister(gc, &CTX->death_watch);
CTX_UNLOCK;
}
void libxl_evdisable_domain_death(libxl_ctx *ctx,
libxl_evgen_domain_death *evg) {
GC_INIT(ctx);
libxl__evdisable_domain_death(gc, evg);
GC_FREE;
}
static void disk_eject_xswatch_callback(libxl__egc *egc, libxl__ev_xswatch *w,
const char *wpath, const char *epath) {
EGC_GC;
libxl_evgen_disk_eject *evg = (void*)w;
char *backend;
char *value;
char backend_type[BACKEND_STRING_SIZE+1];
value = libxl__xs_read(gc, XBT_NULL, wpath);
if (!value || strcmp(value, "eject"))
return;
if (libxl__xs_write(gc, XBT_NULL, wpath, "")) {
LIBXL__EVENT_DISASTER(egc, "xs_write failed acknowledging eject",
errno, LIBXL_EVENT_TYPE_DISK_EJECT);
return;
}
libxl_event *ev = NEW_EVENT(egc, DISK_EJECT, evg->domid);
libxl_device_disk *disk = &ev->u.disk_eject.disk;
backend = libxl__xs_read(gc, XBT_NULL,
libxl__sprintf(gc, "%.*s/backend",
(int)strlen(wpath)-6, wpath));
sscanf(backend,
"/local/domain/%d/backend/%" TOSTRING(BACKEND_STRING_SIZE)
"[a-z]/%*d/%*d",
&disk->backend_domid, backend_type);
if (!strcmp(backend_type, "tap") || !strcmp(backend_type, "vbd")) {
disk->backend = LIBXL_DISK_BACKEND_TAP;
} else if (!strcmp(backend_type, "qdisk")) {
disk->backend = LIBXL_DISK_BACKEND_QDISK;
} else {
disk->backend = LIBXL_DISK_BACKEND_UNKNOWN;
}
disk->pdev_path = strdup(""); /* xxx fixme malloc failure */
disk->format = LIBXL_DISK_FORMAT_EMPTY;
/* this value is returned to the user: do not free right away */
disk->vdev = xs_read(CTX->xsh, XBT_NULL,
libxl__sprintf(gc, "%s/dev", backend), NULL);
disk->removable = 1;
disk->readwrite = 0;
disk->is_cdrom = 1;
libxl__event_occurred(egc, ev);
}
int libxl_evenable_disk_eject(libxl_ctx *ctx, uint32_t guest_domid,
const char *vdev, libxl_ev_user user,
libxl_evgen_disk_eject **evgen_out) {
GC_INIT(ctx);
CTX_LOCK;
int rc;
char *path;
libxl_evgen_disk_eject *evg = NULL;
evg = malloc(sizeof(*evg)); if (!evg) { rc = ERROR_NOMEM; goto out; }
memset(evg, 0, sizeof(*evg));
evg->user = user;
evg->domid = guest_domid;
LIBXL_LIST_INSERT_HEAD(&CTX->disk_eject_evgens, evg, entry);
evg->vdev = strdup(vdev);
if (!evg->vdev) { rc = ERROR_NOMEM; goto out; }
uint32_t domid = libxl_get_stubdom_id(ctx, guest_domid);
if (!domid)
domid = guest_domid;
path = libxl__sprintf(gc, "%s/device/vbd/%d/eject",
libxl__xs_get_dompath(gc, domid),
libxl__device_disk_dev_number(vdev, NULL, NULL));
if (!path) { rc = ERROR_NOMEM; goto out; }
rc = libxl__ev_xswatch_register(gc, &evg->watch,
disk_eject_xswatch_callback, path);
if (rc) goto out;
*evgen_out = evg;
CTX_UNLOCK;
GC_FREE;
return 0;
out:
if (evg)
libxl__evdisable_disk_eject(gc, evg);
CTX_UNLOCK;
GC_FREE;
return rc;
}
void libxl__evdisable_disk_eject(libxl__gc *gc, libxl_evgen_disk_eject *evg) {
CTX_LOCK;
LIBXL_LIST_REMOVE(evg, entry);
if (libxl__ev_xswatch_isregistered(&evg->watch))
libxl__ev_xswatch_deregister(gc, &evg->watch);
free(evg->vdev);
free(evg);
CTX_UNLOCK;
}
void libxl_evdisable_disk_eject(libxl_ctx *ctx, libxl_evgen_disk_eject *evg) {
GC_INIT(ctx);
libxl__evdisable_disk_eject(gc, evg);
GC_FREE;
}
int libxl_domain_destroy(libxl_ctx *ctx, uint32_t domid)
{
GC_INIT(ctx);
char *dom_path;
char *vm_path;
char *pid;
int rc, dm_present;
rc = libxl_domain_info(ctx, NULL, domid);
switch(rc) {
case 0:
break;
case ERROR_INVAL:
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "non-existant domain %d", domid);
default:
return rc;
}
switch (libxl__domain_type(gc, domid)) {
case LIBXL_DOMAIN_TYPE_HVM:
dm_present = 1;
break;
case LIBXL_DOMAIN_TYPE_PV:
pid = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "/local/domain/%d/image/device-model-pid", domid));
dm_present = (pid != NULL);
break;
default:
abort();
}
dom_path = libxl__xs_get_dompath(gc, domid);
if (!dom_path) {
rc = ERROR_FAIL;
goto out;
}
if (libxl__device_pci_destroy_all(gc, 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(gc, domid) < 0)
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "libxl__destroy_device_model failed for %d", domid);
libxl__qmp_cleanup(gc, domid);
}
if (libxl__devices_destroy(gc, domid) < 0)
LIBXL__LOG(ctx, LIBXL__LOG_ERROR,
"libxl__devices_destroy 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);
xs_rm(ctx->xsh, XBT_NULL, libxl__xs_libxl_path(gc, domid));
libxl__userdata_destroyall(gc, 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:
GC_FREE;
return rc;
}
int libxl_console_exec(libxl_ctx *ctx, uint32_t domid, int cons_num, libxl_console_type type)
{
GC_INIT(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_CONSOLE_TYPE_PV:
cons_type_s = "pv";
break;
case LIBXL_CONSOLE_TYPE_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:
GC_FREE;
return ERROR_FAIL;
}
int libxl_primary_console_exec(libxl_ctx *ctx, uint32_t domid_vm)
{
GC_INIT(ctx);
uint32_t stubdomid = libxl_get_stubdom_id(ctx, domid_vm);
int rc;
if (stubdomid)
rc = libxl_console_exec(ctx, stubdomid,
STUBDOM_CONSOLE_SERIAL, LIBXL_CONSOLE_TYPE_PV);
else {
switch (libxl__domain_type(gc, domid_vm)) {
case LIBXL_DOMAIN_TYPE_HVM:
rc = libxl_console_exec(ctx, domid_vm, 0, LIBXL_CONSOLE_TYPE_SERIAL);
break;
case LIBXL_DOMAIN_TYPE_PV:
rc = libxl_console_exec(ctx, domid_vm, 0, LIBXL_CONSOLE_TYPE_PV);
break;
default:
abort();
}
}
GC_FREE;
return rc;
}
int libxl_vncviewer_exec(libxl_ctx *ctx, uint32_t domid, int autopass)
{
GC_INIT(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:
GC_FREE;
return ERROR_FAIL;
}
/******************************************************************************/
int libxl__device_disk_setdefault(libxl__gc *gc, libxl_device_disk *disk)
{
int rc;
rc = libxl__device_disk_set_backend(gc, disk);
if (rc) return rc;
return rc;
}
static int libxl__device_from_disk(libxl__gc *gc, uint32_t domid,
libxl_device_disk *disk,
libxl__device *device)
{
libxl_ctx *ctx = libxl__gc_owner(gc);
int devid;
devid = libxl__device_disk_dev_number(disk->vdev, NULL, NULL);
if (devid==-1) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "Invalid or unsupported"
" virtual disk identifier %s", disk->vdev);
return ERROR_INVAL;
}
device->backend_domid = disk->backend_domid;
device->backend_devid = devid;
switch (disk->backend) {
case LIBXL_DISK_BACKEND_PHY:
device->backend_kind = LIBXL__DEVICE_KIND_VBD;
break;
case LIBXL_DISK_BACKEND_TAP:
device->backend_kind = LIBXL__DEVICE_KIND_VBD;
break;
case LIBXL_DISK_BACKEND_QDISK:
device->backend_kind = LIBXL__DEVICE_KIND_QDISK;
break;
default:
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "unrecognized disk backend type: %d\n",
disk->backend);
return ERROR_INVAL;
}
device->domid = domid;
device->devid = devid;
device->kind = LIBXL__DEVICE_KIND_VBD;
return 0;
}
int libxl_device_disk_add(libxl_ctx *ctx, uint32_t domid, libxl_device_disk *disk)
{
GC_INIT(ctx);
flexarray_t *front;
flexarray_t *back;
char *dev;
libxl__device device;
int major, minor, rc;
rc = libxl__device_disk_setdefault(gc, disk);
if (rc) goto out;
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 (disk->script) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "External block scripts"
" not yet supported, sorry");
rc = ERROR_INVAL;
goto out_free;
}
rc = libxl__device_from_disk(gc, domid, disk, &device);
if (rc != 0) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "Invalid or unsupported"
" virtual disk identifier %s", disk->vdev);
goto out_free;
}
switch (disk->backend) {
case LIBXL_DISK_BACKEND_PHY:
dev = disk->pdev_path;
do_backend_phy:
libxl__device_physdisk_major_minor(dev, &major, &minor);
flexarray_append(back, "physical-device");
flexarray_append(back, libxl__sprintf(gc, "%x:%x", major, minor));
flexarray_append(back, "params");
flexarray_append(back, dev);
assert(device.backend_kind == LIBXL__DEVICE_KIND_VBD);
break;
case LIBXL_DISK_BACKEND_TAP:
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));
/* now create a phy device to export the device to the guest */
goto do_backend_phy;
case LIBXL_DISK_BACKEND_QDISK:
flexarray_append(back, "params");
flexarray_append(back, libxl__sprintf(gc, "%s:%s",
libxl__device_disk_string_of_format(disk->format), disk->pdev_path));
assert(device.backend_kind == LIBXL__DEVICE_KIND_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", domid));
flexarray_append(back, "online");
flexarray_append(back, "1");
flexarray_append(back, "removable");
flexarray_append(back, libxl__sprintf(gc, "%d", (disk->removable) ? 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, libxl__device_disk_string_of_backend(disk->backend));
flexarray_append(back, "mode");
flexarray_append(back, disk->readwrite ? "w" : "r");
flexarray_append(back, "device-type");
flexarray_append(back, disk->is_cdrom ? "cdrom" : "disk");
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", device.devid));
flexarray_append(front, "device-type");
flexarray_append(front, disk->is_cdrom ? "cdrom" : "disk");
libxl__device_generic_add(gc, &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:
GC_FREE;
return rc;
}
int libxl_device_disk_remove(libxl_ctx *ctx, uint32_t domid,
libxl_device_disk *disk,
const libxl_asyncop_how *ao_how)
{
AO_CREATE(ctx, domid, ao_how);
libxl__device device;
int rc;
rc = libxl__device_from_disk(gc, domid, disk, &device);
if (rc != 0) goto out;
rc = libxl__initiate_device_remove(ao, &device);
if (rc) goto out;
return AO_INPROGRESS;
out:
return AO_ABORT(rc);
}
int libxl_device_disk_destroy(libxl_ctx *ctx, uint32_t domid,
libxl_device_disk *disk)
{
GC_INIT(ctx);
libxl__device device;
int rc;
rc = libxl__device_from_disk(gc, domid, disk, &device);
if (rc != 0) goto out;
rc = libxl__device_destroy(gc, &device);
out:
GC_FREE;
return rc;
}
static void libxl__device_disk_from_xs_be(libxl__gc *gc,
const char *be_path,
libxl_device_disk *disk)
{
libxl_ctx *ctx = libxl__gc_owner(gc);
unsigned int len;
char *tmp;
libxl_device_disk_init(disk);
tmp = xs_read(ctx->xsh, XBT_NULL,
libxl__sprintf(gc, "%s/params", be_path), &len);
if (tmp && strchr(tmp, ':')) {
disk->pdev_path = strdup(strchr(tmp, ':') + 1);
free(tmp);
} else {
disk->pdev_path = tmp;
}
libxl_string_to_backend(ctx,
libxl__xs_read(gc, XBT_NULL,
libxl__sprintf(gc, "%s/type", be_path)),
&(disk->backend));
disk->vdev = xs_read(ctx->xsh, XBT_NULL,
libxl__sprintf(gc, "%s/dev", be_path), &len);
tmp = libxl__xs_read(gc, XBT_NULL, libxl__sprintf
(gc, "%s/removable", be_path));
if (tmp)
disk->removable = atoi(tmp);
else
disk->removable = 0;
tmp = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "%s/mode", be_path));
if (!strcmp(tmp, "w"))
disk->readwrite = 1;
else
disk->readwrite = 0;
tmp = libxl__xs_read(gc, XBT_NULL,
libxl__sprintf(gc, "%s/device-type", be_path));
disk->is_cdrom = !strcmp(tmp, "cdrom");
disk->format = LIBXL_DISK_FORMAT_UNKNOWN;
}
int libxl_vdev_to_device_disk(libxl_ctx *ctx, uint32_t domid,
const char *vdev, libxl_device_disk *disk)
{
GC_INIT(ctx);
char *dompath, *path;
int devid = libxl__device_disk_dev_number(vdev, NULL, NULL);
int rc = ERROR_FAIL;
if (devid < 0)
return ERROR_INVAL;
libxl_device_disk_init(disk);
dompath = libxl__xs_get_dompath(gc, domid);
if (!dompath) {
goto out;
}
path = libxl__xs_read(gc, XBT_NULL,
libxl__sprintf(gc, "%s/device/vbd/%d/backend",
dompath, devid));
if (!path)
goto out;
libxl__device_disk_from_xs_be(gc, path, disk);
rc = 0;
out:
GC_FREE;
return rc;
}
static int libxl__append_disk_list_of_type(libxl__gc *gc,
uint32_t domid,
const char *type,
libxl_device_disk **disks,
int *ndisks)
{
char *be_path = NULL;
char **dir = NULL;
unsigned int n = 0;
libxl_device_disk *pdisk = NULL, *pdisk_end = 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) {
libxl_device_disk *tmp;
tmp = realloc(*disks, sizeof (libxl_device_disk) * (*ndisks + n));
if (tmp == NULL)
return ERROR_NOMEM;
*disks = tmp;
pdisk = *disks + *ndisks;
*ndisks += n;
pdisk_end = *disks + *ndisks;
for (; pdisk < pdisk_end; pdisk++, dir++) {
const char *p;
p = libxl__sprintf(gc, "%s/%s", be_path, *dir);
libxl__device_disk_from_xs_be(gc, p, pdisk);
pdisk->backend_domid = 0;
}
}
return 0;
}
libxl_device_disk *libxl_device_disk_list(libxl_ctx *ctx, uint32_t domid, int *num)
{
GC_INIT(ctx);
libxl_device_disk *disks = NULL;
int rc;
*num = 0;
rc = libxl__append_disk_list_of_type(gc, domid, "vbd", &disks, num);
if (rc) goto out_err;
rc = libxl__append_disk_list_of_type(gc, domid, "tap", &disks, num);
if (rc) goto out_err;
rc = libxl__append_disk_list_of_type(gc, domid, "qdisk", &disks, num);
if (rc) goto out_err;
GC_FREE;
return disks;
out_err:
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "Unable to list disks");
while (disks && *num) {
(*num)--;
libxl_device_disk_dispose(&disks[*num]);
}
free(disks);
return NULL;
}
int libxl_device_disk_getinfo(libxl_ctx *ctx, uint32_t domid,
libxl_device_disk *disk, libxl_diskinfo *diskinfo)
{
GC_INIT(ctx);
char *dompath, *diskpath;
char *val;
dompath = libxl__xs_get_dompath(gc, domid);
diskinfo->devid = libxl__device_disk_dev_number(disk->vdev, NULL, NULL);
/* 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) {
GC_FREE;
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;
GC_FREE;
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 = LIBXL_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_remove(ctx, domid, disks + i, 0);
libxl_device_disk_add(ctx, domid, disk);
stubdomid = libxl_get_stubdom_id(ctx, domid);
if (stubdomid) {
libxl_device_disk_remove(ctx, stubdomid, disks + i, 0);
libxl_device_disk_add(ctx, stubdomid, disk);
}
out:
for (i = 0; i < num; i++)
libxl_device_disk_dispose(&disks[i]);
free(disks);
return ret;
}
char * libxl_device_disk_local_attach(libxl_ctx *ctx, libxl_device_disk *disk)
{
GC_INIT(ctx);
char *dev = NULL;
char *ret = NULL;
int rc;
rc = libxl__device_disk_setdefault(gc, disk);
if (rc) goto out;
switch (disk->backend) {
case LIBXL_DISK_BACKEND_PHY:
LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "locally attaching PHY disk %s",
disk->pdev_path);
dev = disk->pdev_path;
break;
case LIBXL_DISK_BACKEND_TAP:
switch (disk->format) {
case LIBXL_DISK_FORMAT_RAW:
/* optimise away the early tapdisk attach in this case */
LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "locally attaching"
" tap disk %s directly (ie without using blktap)",
disk->pdev_path);
dev = disk->pdev_path;
break;
case LIBXL_DISK_FORMAT_VHD:
dev = libxl__blktap_devpath(gc, disk->pdev_path,
disk->format);
break;
case LIBXL_DISK_FORMAT_QCOW:
case LIBXL_DISK_FORMAT_QCOW2:
abort(); /* prevented by libxl__device_disk_set_backend */
default:
LIBXL__LOG(ctx, LIBXL__LOG_ERROR,
"unrecognized disk format: %d", disk->format);
break;
}
break;
case LIBXL_DISK_BACKEND_QDISK:
if (disk->format != LIBXL_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, "locally attaching qdisk %s\n",
disk->pdev_path);
dev = disk->pdev_path;
break;
default:
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "unrecognized disk backend "
"type: %d", disk->backend);
break;
}
out:
if (dev != NULL)
ret = strdup(dev);
GC_FREE;
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_setdefault(libxl__gc *gc, libxl_device_nic *nic)
{
if (!nic->mtu)
nic->mtu = 1492;
if (!nic->model) {
nic->model = strdup("rtl8139");
if (!nic->model) return ERROR_NOMEM;
}
if (!nic->mac[0] && !nic->mac[1] && !nic->mac[2] &&
!nic->mac[3] && !nic->mac[4] && !nic->mac[5]) {
const uint8_t *r;
libxl_uuid uuid;
libxl_uuid_generate(&uuid);
r = libxl_uuid_bytearray(&uuid);
nic->mac[0] = 0x00;
nic->mac[1] = 0x16;
nic->mac[2] = 0x3e;
nic->mac[3] = r[0] & 0x7f;
nic->mac[4] = r[1];
nic->mac[5] = r[2];
}
if (!nic->bridge) {
nic->bridge = strdup("xenbr0");
if (!nic->bridge) return ERROR_NOMEM;
}
if ( !nic->script && asprintf(&nic->script, "%s/vif-bridge",
libxl_xen_script_dir_path()) < 0 )
return ERROR_FAIL;
if (!nic->nictype)
nic->nictype = LIBXL_NIC_TYPE_IOEMU;
return 0;
}
static int libxl__device_from_nic(libxl__gc *gc, uint32_t domid,
libxl_device_nic *nic,
libxl__device *device)
{
device->backend_devid = nic->devid;
device->backend_domid = nic->backend_domid;
device->backend_kind = LIBXL__DEVICE_KIND_VIF;
device->devid = nic->devid;
device->domid = domid;
device->kind = LIBXL__DEVICE_KIND_VIF;
return 0;
}
int libxl_device_nic_add(libxl_ctx *ctx, uint32_t domid, libxl_device_nic *nic)
{
GC_INIT(ctx);
flexarray_t *front;
flexarray_t *back;
libxl__device device;
char *dompath, **l;
unsigned int nb, rc;
rc = libxl__device_nic_setdefault(gc, nic);
if (rc) goto out;
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;
}
}
rc = libxl__device_from_nic(gc, domid, nic, &device);
if ( rc != 0 ) goto out_free;
flexarray_append(back, "frontend-id");
flexarray_append(back, libxl__sprintf(gc, "%d", domid));
flexarray_append(back, "online");
flexarray_append(back, "1");
flexarray_append(back, "state");
flexarray_append(back, libxl__sprintf(gc, "%d", 1));
if (nic->script) {
flexarray_append(back, "script");
flexarray_append(back, nic->script[0]=='/' ? nic->script
: libxl__sprintf(gc, "%s/%s",
libxl_xen_script_dir_path(),
nic->script));
}
if (nic->ifname) {
flexarray_append(back, "vifname");
flexarray_append(back, nic->ifname);
}
flexarray_append(back, "mac");
flexarray_append(back,libxl__sprintf(gc,
LIBXL_MAC_FMT, LIBXL_MAC_BYTES(nic->mac)));
if (nic->ip) {
flexarray_append(back, "ip");
flexarray_append(back, libxl__strdup(gc, nic->ip));
}
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,
LIBXL_MAC_FMT, LIBXL_MAC_BYTES(nic->mac)));
libxl__device_generic_add(gc, &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:
GC_FREE;
return rc;
}
int libxl_device_nic_remove(libxl_ctx *ctx, uint32_t domid,
libxl_device_nic *nic,
const libxl_asyncop_how *ao_how)
{
AO_CREATE(ctx, domid, ao_how);
libxl__device device;
int rc;
rc = libxl__device_from_nic(gc, domid, nic, &device);
if (rc != 0) goto out;
rc = libxl__initiate_device_remove(ao, &device);
if (rc) goto out;
return AO_INPROGRESS;
out:
return AO_ABORT(rc);
}
int libxl_device_nic_destroy(libxl_ctx *ctx, uint32_t domid,
libxl_device_nic *nic)
{
GC_INIT(ctx);
libxl__device device;
int rc;
rc = libxl__device_from_nic(gc, domid, nic, &device);
if (rc != 0) goto out;
rc = libxl__device_destroy(gc, &device);
out:
GC_FREE;
return rc;
}
static void libxl__device_nic_from_xs_be(libxl__gc *gc,
const char *be_path,
libxl_device_nic *nic)
{
libxl_ctx *ctx = libxl__gc_owner(gc);
unsigned int len;
char *tmp;
int rc;
memset(nic, 0, sizeof(*nic));
tmp = xs_read(ctx->xsh, XBT_NULL,
libxl__sprintf(gc, "%s/handle", be_path), &len);
if ( tmp )
nic->devid = atoi(tmp);
else
nic->devid = 0;
/* nic->mtu = */
tmp = xs_read(ctx->xsh, XBT_NULL,
libxl__sprintf(gc, "%s/mac", be_path), &len);
rc = libxl__parse_mac(tmp, nic->mac);
if (rc)
memset(nic->mac, 0, sizeof(nic->mac));
nic->ip = xs_read(ctx->xsh, XBT_NULL,
libxl__sprintf(gc, "%s/ip", be_path), &len);
nic->bridge = xs_read(ctx->xsh, XBT_NULL,
libxl__sprintf(gc, "%s/bridge", be_path), &len);
nic->script = xs_read(ctx->xsh, XBT_NULL,
libxl__sprintf(gc, "%s/script", be_path), &len);
/* XXX ioemu nics are not in xenstore at all? */
nic->nictype = LIBXL_NIC_TYPE_VIF;
nic->model = NULL; /* XXX Only for TYPE_IOEMU */
nic->ifname = NULL; /* XXX Only for TYPE_IOEMU */
}
int libxl_devid_to_device_nic(libxl_ctx *ctx, uint32_t domid,
int devid, libxl_device_nic *nic)
{
GC_INIT(ctx);
char *dompath, *path;
int rc = ERROR_FAIL;
memset(nic, 0, sizeof (libxl_device_nic));
dompath = libxl__xs_get_dompath(gc, domid);
if (!dompath)
goto out;
path = libxl__xs_read(gc, XBT_NULL,
libxl__sprintf(gc, "%s/device/vif/%d/backend",
dompath, devid));
if (!path)
goto out;
libxl__device_nic_from_xs_be(gc, path, nic);
rc = 0;
out:
GC_FREE;
return rc;
}
static int libxl__append_nic_list_of_type(libxl__gc *gc,
uint32_t domid,
const char *type,
libxl_device_nic **nics,
int *nnics)
{
char *be_path = NULL;
char **dir = NULL;
unsigned int n = 0;
libxl_device_nic *pnic = NULL, *pnic_end = 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) {
libxl_device_nic *tmp;
tmp = realloc(*nics, sizeof (libxl_device_nic) * (*nnics + n));
if (tmp == NULL)
return ERROR_NOMEM;
*nics = tmp;
pnic = *nics + *nnics;
*nnics += n;
pnic_end = *nics + *nnics;
for (; pnic < pnic_end; pnic++, dir++) {
const char *p;
p = libxl__sprintf(gc, "%s/%s", be_path, *dir);
libxl__device_nic_from_xs_be(gc, p, pnic);
pnic->backend_domid = 0;
}
}
return 0;
}
libxl_device_nic *libxl_device_nic_list(libxl_ctx *ctx, uint32_t domid, int *num)
{
GC_INIT(ctx);
libxl_device_nic *nics = NULL;
int rc;
*num = 0;
rc = libxl__append_nic_list_of_type(gc, domid, "vif", &nics, num);
if (rc) goto out_err;
GC_FREE;
return nics;
out_err:
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "Unable to list nics");
while (*num) {
(*num)--;
libxl_device_nic_dispose(&nics[*num]);
}
free(nics);
return NULL;
}
int libxl_device_nic_getinfo(libxl_ctx *ctx, uint32_t domid,
libxl_device_nic *nic, libxl_nicinfo *nicinfo)
{
GC_INIT(ctx);
char *dompath, *nicpath;
char *val;
dompath = libxl__xs_get_dompath(gc, domid);
nicinfo->devid = nic->devid;
nicpath = libxl__sprintf(gc, "%s/device/vif/%d", dompath, nicinfo->devid);
nicinfo->backend = xs_read(ctx->xsh, XBT_NULL,
libxl__sprintf(gc, "%s/backend", nicpath), NULL);
if (!nicinfo->backend) {
GC_FREE;
return ERROR_FAIL;
}
val = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "%s/backend-id", nicpath));
nicinfo->backend_id = val ? strtoul(val, NULL, 10) : -1;
val = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "%s/state", nicpath));
nicinfo->state = val ? strtoul(val, NULL, 10) : -1;
val = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "%s/event-channel", nicpath));
nicinfo->evtch = val ? strtoul(val, NULL, 10) : -1;
val = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "%s/tx-ring-ref", nicpath));
nicinfo->rref_tx = val ? strtoul(val, NULL, 10) : -1;
val = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "%s/rx-ring-ref", nicpath));
nicinfo->rref_rx = val ? strtoul(val, NULL, 10) : -1;
nicinfo->frontend = xs_read(ctx->xsh, XBT_NULL,
libxl__sprintf(gc, "%s/frontend", nicinfo->backend), NULL);
val = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "%s/frontend-id", nicinfo->backend));
nicinfo->frontend_id = val ? strtoul(val, NULL, 10) : -1;
GC_FREE;
return 0;
}
/******************************************************************************/
int libxl__device_console_add(libxl__gc *gc, uint32_t domid,
libxl__device_console *console,
libxl__domain_build_state *state)
{
flexarray_t *front;
flexarray_t *back;
libxl__device device;
int rc;
if (console->devid && state) {
rc = ERROR_INVAL;
goto out;
}
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 = LIBXL__DEVICE_KIND_CONSOLE;
device.devid = console->devid;
device.domid = domid;
device.kind = LIBXL__DEVICE_KIND_CONSOLE;
flexarray_append(back, "frontend-id");
flexarray_append(back, libxl__sprintf(gc, "%d", 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__CONSOLE_BACKEND_XENCONSOLED)
flexarray_append(front, "xenconsoled");
else
flexarray_append(front, "ioemu");
flexarray_append(front, "output");
flexarray_append(front, console->output);
if (state) {
flexarray_append(front, "port");
flexarray_append(front, libxl__sprintf(gc, "%"PRIu32, state->console_port));
flexarray_append(front, "ring-ref");
flexarray_append(front, libxl__sprintf(gc, "%lu", 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(gc, &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:
return rc;
}
/******************************************************************************/
int libxl__device_vkb_setdefault(libxl__gc *gc, libxl_device_vkb *vkb)
{
return 0;
}
static int libxl__device_from_vkb(libxl__gc *gc, uint32_t domid,
libxl_device_vkb *vkb,
libxl__device *device)
{
device->backend_devid = vkb->devid;
device->backend_domid = vkb->backend_domid;
device->backend_kind = LIBXL__DEVICE_KIND_VKBD;
device->devid = vkb->devid;
device->domid = domid;
device->kind = LIBXL__DEVICE_KIND_VKBD;
return 0;
}
int libxl_device_vkb_add(libxl_ctx *ctx, uint32_t domid, libxl_device_vkb *vkb)
{
GC_INIT(ctx);
flexarray_t *front;
flexarray_t *back;
libxl__device device;
int rc;
rc = libxl__device_vkb_setdefault(gc, vkb);
if (rc) goto out;
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;
}
rc = libxl__device_from_vkb(gc, domid, vkb, &device);
if (rc != 0) goto out_free;
flexarray_append(back, "frontend-id");
flexarray_append(back, libxl__sprintf(gc, "%d", 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(gc, &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:
GC_FREE;
return rc;
}
int libxl_device_vkb_remove(libxl_ctx *ctx, uint32_t domid,
libxl_device_vkb *vkb,
const libxl_asyncop_how *ao_how)
{
AO_CREATE(ctx, domid, ao_how);
libxl__device device;
int rc;
rc = libxl__device_from_vkb(gc, domid, vkb, &device);
if (rc != 0) goto out;
rc = libxl__initiate_device_remove(ao, &device);
if (rc) goto out;
return AO_INPROGRESS;
out:
return AO_ABORT(rc);
}
int libxl_device_vkb_destroy(libxl_ctx *ctx, uint32_t domid,
libxl_device_vkb *vkb)
{
GC_INIT(ctx);
libxl__device device;
int rc;
rc = libxl__device_from_vkb(gc, domid, vkb, &device);
if (rc != 0) goto out;
rc = libxl__device_destroy(gc, &device);
out:
GC_FREE;
return rc;
}
/******************************************************************************/
int libxl__device_vfb_setdefault(libxl__gc *gc, libxl_device_vfb *vfb)
{
libxl_defbool_setdefault(&vfb->vnc.enable, true);
if (libxl_defbool_val(vfb->vnc.enable)) {
if (!vfb->vnc.listen) {
vfb->vnc.listen = strdup("127.0.0.1");
if (!vfb->vnc.listen) return ERROR_NOMEM;
}
libxl_defbool_setdefault(&vfb->vnc.findunused, true);
}
libxl_defbool_setdefault(&vfb->sdl.enable, false);
libxl_defbool_setdefault(&vfb->sdl.opengl, false);
return 0;
}
static int libxl__device_from_vfb(libxl__gc *gc, uint32_t domid,
libxl_device_vfb *vfb,
libxl__device *device)
{
device->backend_devid = vfb->devid;
device->backend_domid = vfb->backend_domid;
device->backend_kind = LIBXL__DEVICE_KIND_VFB;
device->devid = vfb->devid;
device->domid = domid;
device->kind = LIBXL__DEVICE_KIND_VFB;
return 0;
}
int libxl_device_vfb_add(libxl_ctx *ctx, uint32_t domid, libxl_device_vfb *vfb)
{
GC_INIT(ctx);
flexarray_t *front;
flexarray_t *back;
libxl__device device;
int rc;
rc = libxl__device_vfb_setdefault(gc, vfb);
if (rc) goto out;
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;
}
rc = libxl__device_from_vfb(gc, domid, vfb, &device);
if (rc != 0) goto out_free;
flexarray_append_pair(back, "frontend-id", libxl__sprintf(gc, "%d", domid));
flexarray_append_pair(back, "online", "1");
flexarray_append_pair(back, "state", libxl__sprintf(gc, "%d", 1));
flexarray_append_pair(back, "domain", libxl__domid_to_name(gc, domid));
flexarray_append_pair(back, "vnc",
libxl_defbool_val(vfb->vnc.enable) ? "1" : "0");
flexarray_append_pair(back, "vnclisten", vfb->vnc.listen);
flexarray_append_pair(back, "vncpasswd", vfb->vnc.passwd);
flexarray_append_pair(back, "vncdisplay",
libxl__sprintf(gc, "%d", vfb->vnc.display));
flexarray_append_pair(back, "vncunused",
libxl_defbool_val(vfb->vnc.findunused) ? "1" : "0");
flexarray_append_pair(back, "sdl",
libxl_defbool_val(vfb->sdl.enable) ? "1" : "0");
flexarray_append_pair(back, "opengl",
libxl_defbool_val(vfb->sdl.opengl) ? "1" : "0");
if (vfb->sdl.xauthority) {
flexarray_append_pair(back, "xauthority", vfb->sdl.xauthority);
}
if (vfb->sdl.display) {
flexarray_append_pair(back, "display", vfb->sdl.display);
}
flexarray_append_pair(front, "backend-id",
libxl__sprintf(gc, "%d", vfb->backend_domid));
flexarray_append_pair(front, "state", libxl__sprintf(gc, "%d", 1));
libxl__device_generic_add(gc, &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:
GC_FREE;
return rc;
}
int libxl_device_vfb_remove(libxl_ctx *ctx, uint32_t domid,
libxl_device_vfb *vfb,
const libxl_asyncop_how *ao_how)
{
AO_CREATE(ctx, domid, ao_how);
libxl__device device;
int rc;
rc = libxl__device_from_vfb(gc, domid, vfb, &device);
if (rc != 0) goto out;
rc = libxl__initiate_device_remove(ao, &device);
if (rc) goto out;
return AO_INPROGRESS;
out:
return AO_ABORT(rc);
}
int libxl_device_vfb_destroy(libxl_ctx *ctx, uint32_t domid,
libxl_device_vfb *vfb)
{
GC_INIT(ctx);
libxl__device device;
int rc;
rc = libxl__device_from_vfb(gc, domid, vfb, &device);
if (rc != 0) goto out;
rc = libxl__device_destroy(gc, &device);
out:
GC_FREE;
return rc;
}
/******************************************************************************/
int libxl_domain_setmaxmem(libxl_ctx *ctx, uint32_t domid, uint32_t max_memkb)
{
GC_INIT(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 = xc_domain_setmaxmem(ctx->xch, domid, max_memkb + 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, max_memkb + LIBXL_MAXMEM_CONSTANT, rc);
goto out;
}
rc = 0;
out:
GC_FREE;
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)
{
GC_INIT(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;
GC_FREE;
return rc;
}
int libxl_get_memory_target(libxl_ctx *ctx, uint32_t domid, uint32_t *out_target)
{
GC_INIT(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:
GC_FREE;
return rc;
}
int libxl_domain_need_memory(libxl_ctx *ctx, libxl_domain_build_info *b_info,
uint32_t *need_memkb)
{
GC_INIT(ctx);
int rc;
rc = libxl__domain_build_info_setdefault(gc, b_info);
if (rc) goto out;
*need_memkb = b_info->target_memkb;
switch (b_info->type) {
case LIBXL_DOMAIN_TYPE_HVM:
*need_memkb += b_info->shadow_memkb + LIBXL_HVM_EXTRA_MEMORY;
if (libxl_defbool_val(b_info->device_model_stubdomain))
*need_memkb += 32 * 1024;
break;
case LIBXL_DOMAIN_TYPE_PV:
*need_memkb += b_info->shadow_memkb + LIBXL_PV_EXTRA_MEMORY;
break;
default:
rc = ERROR_INVAL;
goto out;
}
if (*need_memkb % (2 * 1024))
*need_memkb += (2 * 1024) - (*need_memkb % (2 * 1024));
rc = 0;
out:
GC_FREE;
return rc;
}
int libxl_get_free_memory(libxl_ctx *ctx, uint32_t *memkb)
{
int rc = 0;
libxl_physinfo info;
uint32_t freemem_slack;
GC_INIT(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:
GC_FREE;
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;
GC_INIT(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:
GC_FREE;
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_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->sharing_freed_pages = xc_sharing_freed_pages(ctx->xch);
physinfo->sharing_used_frames = xc_sharing_used_frames(ctx->xch);
physinfo->nr_nodes = xcphysinfo.nr_nodes;
memcpy(physinfo->hw_cap,xcphysinfo.hw_cap, sizeof(physinfo->hw_cap));
physinfo->cap_hvm = !!(xcphysinfo.capabilities & XEN_SYSCTL_PHYSCAP_hvm);
physinfo->cap_hvm_directio =
!!(xcphysinfo.capabilities & XEN_SYSCTL_PHYSCAP_hvm_directio);
return 0;
}
libxl_cputopology *libxl_get_cpu_topology(libxl_ctx *ctx, int *nr)
{
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);
libxl_cputopology *ret = NULL;
int i;
int max_cpus;
max_cpus = libxl_get_max_cpus(ctx);
if (max_cpus == 0)
{
LIBXL__LOG(ctx, XTL_ERROR, "Unable to determine number of CPUS");
return NULL;
}
coremap = xc_hypercall_buffer_alloc
(ctx->xch, coremap, sizeof(*coremap) * max_cpus);
socketmap = xc_hypercall_buffer_alloc
(ctx->xch, socketmap, sizeof(*socketmap) * max_cpus);
nodemap = xc_hypercall_buffer_alloc
(ctx->xch, nodemap, sizeof(*nodemap) * max_cpus);
if ((coremap == NULL) || (socketmap == NULL) || (nodemap == NULL)) {
LIBXL__LOG_ERRNOVAL(ctx, XTL_ERROR, ENOMEM,
"Unable to allocate hypercall arguments");
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 = max_cpus - 1;
if (xc_topologyinfo(ctx->xch, &tinfo) != 0) {
LIBXL__LOG_ERRNO(ctx, XTL_ERROR, "Topology info hypercall failed");
goto fail;
}
ret = malloc(sizeof(libxl_cputopology) * max_cpus);
if (ret == NULL) {
LIBXL__LOG_ERRNOVAL(ctx, XTL_ERROR, ENOMEM,
"Unable to allocate return value");
goto fail;
}
for (i = 0; i < max_cpus; i++) {
#define V(map, i) (map[i] == INVALID_TOPOLOGY_ID) ? \
LIBXL_CPUTOPOLOGY_INVALID_ENTRY : map[i]
ret[i].core = V(coremap, i);
ret[i].socket = V(socketmap, i);
ret[i].node = V(nodemap, i);
#undef V
}
fail:
xc_hypercall_buffer_free(ctx->xch, coremap);
xc_hypercall_buffer_free(ctx->xch, socketmap);
xc_hypercall_buffer_free(ctx->xch, nodemap);
if (ret)
*nr = max_cpus;
return ret;
}
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_vcpuaffinity_all(libxl_ctx *ctx, uint32_t domid,
unsigned int max_vcpus, libxl_cpumap *cpumap)
{
int i, rc = 0;
for (i = 0; i < max_vcpus; i++) {
if (libxl_set_vcpuaffinity(ctx, domid, i, cpumap)) {
LIBXL__LOG(ctx, LIBXL__LOG_WARNING,
"failed to set affinity for %d", i);
rc = ERROR_FAIL;
}
}
return rc;
}
int libxl_set_vcpuonline(libxl_ctx *ctx, uint32_t domid, libxl_cpumap *cpumap)
{
GC_INIT(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:
GC_FREE;
return rc;
}
libxl_scheduler libxl_get_scheduler(libxl_ctx *ctx)
{
libxl_scheduler sched, ret;
if ((ret = xc_sched_id(ctx->xch, (int *)&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_domain *scinfo)
{
struct xen_domctl_sched_credit sdom;
int rc;
libxl_sched_credit_domain_init(scinfo);
rc = xc_sched_credit_domain_get(ctx->xch, domid, &sdom);
if (rc != 0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "getting 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_domain *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(ctx, LIBXL__LOG_ERROR,
"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(ctx, LIBXL__LOG_ERROR,
"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;
}
int libxl_sched_credit_params_get(libxl_ctx *ctx, uint32_t poolid,
libxl_sched_credit_params *scinfo)
{
struct xen_sysctl_credit_schedule sparam;
int rc;
rc = xc_sched_credit_params_get(ctx->xch, poolid, &sparam);
if (rc != 0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "getting sched credit param");
return ERROR_FAIL;
}
scinfo->tslice_ms = sparam.tslice_ms;
scinfo->ratelimit_us = sparam.ratelimit_us;
return 0;
}
int libxl_sched_credit_params_set(libxl_ctx *ctx, uint32_t poolid,
libxl_sched_credit_params *scinfo)
{
struct xen_sysctl_credit_schedule sparam;
int rc=0;
if (scinfo->tslice_ms < XEN_SYSCTL_CSCHED_TSLICE_MIN
|| scinfo->tslice_ms > XEN_SYSCTL_CSCHED_TSLICE_MAX) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR,
"Time slice out of range, valid range is from %d to %d",
XEN_SYSCTL_CSCHED_TSLICE_MIN,
XEN_SYSCTL_CSCHED_TSLICE_MAX);
return ERROR_INVAL;
}
if (scinfo->ratelimit_us < XEN_SYSCTL_SCHED_RATELIMIT_MIN
|| scinfo->ratelimit_us > XEN_SYSCTL_SCHED_RATELIMIT_MAX) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR,
"Ratelimit out of range, valid range is from %d to %d",
XEN_SYSCTL_SCHED_RATELIMIT_MIN,
XEN_SYSCTL_SCHED_RATELIMIT_MAX);
return ERROR_INVAL;
}
if (scinfo->ratelimit_us > scinfo->tslice_ms*1000) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR,
"Ratelimit cannot be greater than timeslice\n");
return ERROR_INVAL;
}
sparam.tslice_ms = scinfo->tslice_ms;
sparam.ratelimit_us = scinfo->ratelimit_us;
rc = xc_sched_credit_params_set(ctx->xch, poolid, &sparam);
if ( rc < 0 ) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "setting sched credit param");
return ERROR_FAIL;
}
scinfo->tslice_ms = sparam.tslice_ms;
scinfo->ratelimit_us = sparam.ratelimit_us;
return 0;
}
int libxl_sched_credit2_domain_get(libxl_ctx *ctx, uint32_t domid,
libxl_sched_credit2_domain *scinfo)
{
struct xen_domctl_sched_credit2 sdom;
int rc;
libxl_sched_credit2_domain_init(scinfo);
rc = xc_sched_credit2_domain_get(ctx->xch, domid, &sdom);
if (rc != 0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"getting domain sched credit2");
return ERROR_FAIL;
}
scinfo->weight = sdom.weight;
return 0;
}
int libxl_sched_credit2_domain_set(libxl_ctx *ctx, uint32_t domid,
libxl_sched_credit2_domain *scinfo)
{
struct xen_domctl_sched_credit2 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;
}
sdom.weight = scinfo->weight;
rc = xc_sched_credit2_domain_set(ctx->xch, domid, &sdom);
if ( rc < 0 ) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"setting domain sched credit2");
return ERROR_FAIL;
}
return 0;
}
int libxl_sched_sedf_domain_get(libxl_ctx *ctx, uint32_t domid,
libxl_sched_sedf_domain *scinfo)
{
uint64_t period;
uint64_t slice;
uint64_t latency;
uint16_t extratime;
uint16_t weight;
int rc;
libxl_sched_sedf_domain_init(scinfo);
rc = xc_sedf_domain_get(ctx->xch, domid, &period, &slice, &latency,
&extratime, &weight);
if (rc != 0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "getting domain sched sedf");
return ERROR_FAIL;
}
scinfo->period = period / 1000000;
scinfo->slice = slice / 1000000;
scinfo->latency = latency / 1000000;
scinfo->extratime = extratime;
scinfo->weight = weight;
return 0;
}
int libxl_sched_sedf_domain_set(libxl_ctx *ctx, uint32_t domid,
libxl_sched_sedf_domain *scinfo)
{
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;
rc = xc_sedf_domain_set(ctx->xch, domid, scinfo->period * 1000000,
scinfo->slice * 1000000, scinfo->latency * 1000000,
scinfo->extratime, scinfo->weight);
if ( rc < 0 ) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "setting domain sched sedf");
return ERROR_FAIL;
}
return 0;
}
int libxl_send_trigger(libxl_ctx *ctx, uint32_t domid,
libxl_trigger trigger, uint32_t vcpuid)
{
int rc;
switch (trigger) {
case LIBXL_TRIGGER_POWER:
rc = xc_domain_send_trigger(ctx->xch, domid,
XEN_DOMCTL_SENDTRIGGER_POWER, vcpuid);
break;
case LIBXL_TRIGGER_SLEEP:
rc = xc_domain_send_trigger(ctx->xch, domid,
XEN_DOMCTL_SENDTRIGGER_SLEEP, vcpuid);
break;
case LIBXL_TRIGGER_NMI:
rc = xc_domain_send_trigger(ctx->xch, domid,
XEN_DOMCTL_SENDTRIGGER_NMI, vcpuid);
break;
case LIBXL_TRIGGER_INIT:
rc = xc_domain_send_trigger(ctx->xch, domid,
XEN_DOMCTL_SENDTRIGGER_INIT, vcpuid);
break;
case LIBXL_TRIGGER_RESET:
rc = xc_domain_send_trigger(ctx->xch, domid,
XEN_DOMCTL_SENDTRIGGER_RESET, vcpuid);
break;
case LIBXL_TRIGGER_S3RESUME:
xc_set_hvm_param(ctx->xch, domid, HVM_PARAM_ACPI_S_STATE, 0);
rc = 0;
break;
default:
rc = EINVAL;
break;
}
if (rc != 0) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Send trigger '%s' failed",
libxl_trigger_to_string(trigger));
rc = ERROR_FAIL;
}
return 0;
}
int libxl_send_sysrq(libxl_ctx *ctx, uint32_t domid, char sysrq)
{
GC_INIT(ctx);
char *dompath = libxl__xs_get_dompath(gc, domid);
libxl__xs_write(gc, XBT_NULL, libxl__sprintf(gc, "%s/control/sysrq", dompath), "%c", sysrq);
GC_FREE;
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)
{
GC_INIT(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);
}
GC_FREE;
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_dispose(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_cpupool_create(libxl_ctx *ctx, const char *name,
libxl_scheduler sched,
libxl_cpumap cpumap, libxl_uuid *uuid,
uint32_t *poolid)
{
GC_INIT(ctx);
int rc;
int i;
xs_transaction_t t;
char *uuid_string;
uuid_string = libxl__uuid2string(gc, *uuid);
if (!uuid_string) {
GC_FREE;
return ERROR_NOMEM;
}
rc = xc_cpupool_create(ctx->xch, poolid, sched);
if (rc) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Could not create cpupool");
GC_FREE;
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_cpupool_destroy(ctx, *poolid);
GC_FREE;
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)) {
GC_FREE;
return 0;
}
}
}
int libxl_cpupool_destroy(libxl_ctx *ctx, uint32_t poolid)
{
GC_INIT(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) {
GC_FREE;
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_dispose(&cpumap);
out:
xc_cpupool_infofree(ctx->xch, info);
GC_FREE;
return rc;
}
int libxl_cpupool_rename(libxl_ctx *ctx, const char *name, uint32_t poolid)
{
GC_INIT(ctx);
xs_transaction_t t;
xc_cpupoolinfo_t *info;
int rc;
info = xc_cpupool_getinfo(ctx->xch, poolid);
if (info == NULL) {
GC_FREE;
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);
GC_FREE;
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, nr;
libxl_cpumap freemap;
libxl_cputopology *topology;
if (libxl_get_freecpus(ctx, &freemap)) {
return ERROR_FAIL;
}
topology = libxl_get_cpu_topology(ctx, &nr);
if (!topology) {
rc = ERROR_FAIL;
goto out;
}
*cpus = 0;
for (cpu = 0; cpu < nr; cpu++) {
if (libxl_cpumap_test(&freemap, cpu) && (topology[cpu].node == node) &&
!libxl_cpupool_cpuadd(ctx, poolid, cpu)) {
(*cpus)++;
}
libxl_cputopology_dispose(&topology[cpu]);
}
free(topology);
out:
libxl_cpumap_dispose(&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, nr_cpus;
libxl_cputopology *topology;
libxl_cpupoolinfo *poolinfo;
poolinfo = libxl_list_cpupool(ctx, &n_pools);
if (!poolinfo) {
return ERROR_NOMEM;
}
topology = libxl_get_cpu_topology(ctx, &nr_cpus);
if (!topology) {
ret = ERROR_FAIL;
goto out;
}
*cpus = 0;
for (p = 0; p < n_pools; p++) {
if (poolinfo[p].poolid == poolid) {
for (cpu = 0; cpu < nr_cpus; cpu++) {
if ((topology[cpu].node == node) &&
libxl_cpumap_test(&poolinfo[p].cpumap, cpu) &&
!libxl_cpupool_cpuremove(ctx, poolid, cpu)) {
(*cpus)++;
}
}
}
}
for (cpu = 0; cpu < nr_cpus; cpu++)
libxl_cputopology_dispose(&topology[cpu]);
free(topology);
out:
for (p = 0; p < n_pools; p++) {
libxl_cpupoolinfo_dispose(poolinfo + p);
}
return ret;
}
int libxl_cpupool_movedomain(libxl_ctx *ctx, uint32_t poolid, uint32_t domid)
{
GC_INIT(ctx);
int rc;
rc = xc_cpupool_movedomain(ctx->xch, poolid, domid);
if (rc) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, rc,
"Error moving domain to cpupool");
GC_FREE;
return ERROR_FAIL;
}
GC_FREE;
return 0;
}
static int fd_set_flags(libxl_ctx *ctx, int fd,
int fcntlgetop, int fcntlsetop, const char *fl,
int flagmask, int set_p)
{
int flags, r;
flags = fcntl(fd, fcntlgetop);
if (flags == -1) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "fcntl(,F_GET%s) failed",fl);
return ERROR_FAIL;
}
if (set_p)
flags |= flagmask;
else
flags &= ~flagmask;
r = fcntl(fd, fcntlsetop, flags);
if (r == -1) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "fcntl(,F_SET%s) failed",fl);
return ERROR_FAIL;
}
return 0;
}
int libxl_fd_set_cloexec(libxl_ctx *ctx, int fd, int cloexec)
{ return fd_set_flags(ctx,fd, F_GETFD,F_SETFD,"FD", FD_CLOEXEC, cloexec); }
int libxl_fd_set_nonblock(libxl_ctx *ctx, int fd, int nonblock)
{ return fd_set_flags(ctx,fd, F_GETFL,F_SETFL,"FL", O_NONBLOCK, nonblock); }
/*
* Local variables:
* mode: C
* c-basic-offset: 4
* indent-tabs-mode: nil
* End:
*/
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