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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: [PATCH,v2] xl: randomly generate UUID's
On Monday 16 August 2010 16:48:56 Gianni Tedesco wrote:
> This patch converts xl to randomly generate UUID's rather than using a
> dodgy time-seeded PRNG. I have incorporated Cristoph Eggers suggestions
> wrt. portability so I would be grateful for an ACK on the NetBSD side of
> things. This also folds in the "v2: xl: make libxl_uuid2string internal
> to libxenlight" patch since it couldn't be avoided in fixing up xl
> printfs() which grok around in the uuid type directly.
>
> I have ignored various suggestions so far on auto-generation of MAC
> addresses and left it as a topic for a future patch to solve. In other
> words the behaviour stays the same it's just using a true random source.
>
> This will probably conflict horribly with "libxl: autogenerate type
> definitions and destructor functions" so if it's acked in principle I
> can re-base and re-send on top of that.
Please do. The patch looks almost good to me - see line comments -
I would like to compile-test it at least on NetBSD before acknowledging
the patch.
Christoph
>
> Signed-off-by: Gianni Tedesco <gianni.tedesco@xxxxxxxxxx>
>
> diff -r 85bd0f6e8fed tools/libxl/Makefile
> --- a/tools/libxl/Makefile Fri Aug 13 13:55:51 2010 +0100
> +++ b/tools/libxl/Makefile Mon Aug 16 15:39:13 2010 +0100
> @@ -16,6 +16,9 @@ CFLAGS += -I. -fPIC
> CFLAGS += $(CFLAGS_libxenctrl) $(CFLAGS_libxenguest) $(CFLAGS_libxenstore)
> $(CFLAGS_libblktapctl)
>
> LIBS = $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(LDLIBS_libxenstore)
> $(LDLIBS_libblktapctl) $(UTIL_LIBS)
> +ifeq ($(CONFIG_Linux),y)
> +LIBS += -luuid
> +endif
This is not needed because $(UTIL_LIBS) already covers that case.
> LIBXL_OBJS-y = osdeps.o libxl_paths.o libxl_bootloader.o
> LIBXL_OBJS = flexarray.o libxl.o libxl_pci.o libxl_dom.o libxl_exec.o
> libxl_xshelp.o libxl_device.o libxl_internal.o xenguest.o libxl_utils.o
> $(LIBXL_OBJS-y) diff -r 85bd0f6e8fed tools/libxl/libxl.c
> --- a/tools/libxl/libxl.c Fri Aug 13 13:55:51 2010 +0100
> +++ b/tools/libxl/libxl.c Mon Aug 16 15:39:13 2010 +0100
> @@ -90,7 +90,7 @@ int libxl_domain_make(libxl_ctx *ctx, li
> xs_transaction_t t;
> xen_domain_handle_t handle;
>
> - uuid_string = libxl_uuid2string(ctx, info->uuid);
> + uuid_string = libxl_uuid2string(&gc, info->uuid);
> if (!uuid_string) {
> libxl_free_all(&gc);
> return ERROR_NOMEM;
> @@ -102,7 +102,7 @@ int libxl_domain_make(libxl_ctx *ctx, li
> *domid = -1;
>
> /* Ultimately, handle is an array of 16 uint8_t, same as uuid */
> - memcpy(handle, info->uuid, sizeof(xen_domain_handle_t));
> + libxl_uuid_copy((libxl_uuid *)handle, &info->uuid);
>
> ret = xc_domain_create(ctx->xch, info->ssidref, handle, flags, domid);
> if (ret < 0) {
> @@ -453,7 +453,7 @@ int libxl_domain_preserve(libxl_ctx *ctx
> return ERROR_NOMEM;
> }
>
> - uuid_string = libxl_uuid2string(ctx, new_uuid);
> + uuid_string = libxl_uuid2string(&gc, new_uuid);
> if (!uuid_string) {
> libxl_free_all(&gc);
> return ERROR_NOMEM;
> @@ -1458,8 +1458,8 @@ static int libxl_create_stubdom(libxl_ct
> memset(&c_info, 0x00, sizeof(libxl_domain_create_info));
> c_info.hvm = 0;
> c_info.name = libxl_sprintf(&gc, "%s-dm", _libxl_domid_to_name(&gc,
> info->domid)); - for (i = 0; i < 16; i++)
> - c_info.uuid[i] = info->uuid[i];
> +
> + libxl_uuid_copy(&c_info.uuid, &info->uuid);
>
> memset(&b_info, 0x00, sizeof(libxl_domain_build_info));
> b_info.max_vcpus = 1;
> @@ -2785,7 +2785,7 @@ int libxl_set_memory_target(libxl_ctx *c
> if (rc != 1 || info.domain != domid)
> goto out;
> xcinfo2xlinfo(&info, &ptr);
> - uuid = libxl_uuid2string(ctx, ptr.uuid);
> + uuid = libxl_uuid2string(&gc, ptr.uuid);
> libxl_xs_write(&gc, XBT_NULL, libxl_sprintf(&gc, "/vm/%s/memory",
> uuid), "%"PRIu32, target_memkb / 1024);
>
> if (enforce || !domid)
> diff -r 85bd0f6e8fed tools/libxl/libxl.h
> --- a/tools/libxl/libxl.h Fri Aug 13 13:55:51 2010 +0100
> +++ b/tools/libxl/libxl.h Mon Aug 16 15:39:13 2010 +0100
> @@ -21,8 +21,7 @@
> #include <xenctrl.h>
> #include <xs.h>
> #include <sys/wait.h> /* for pid_t */
> -
> -typedef uint8_t libxl_uuid[16];
> +#include "xl_uuid.h"
>
> typedef uint8_t libxl_mac[6];
>
> @@ -362,7 +361,6 @@ int libxl_run_bootloader(libxl_ctx *ctx,
> libxl_device_disk *disk,
> uint32_t domid);
>
> -char *libxl_uuid2string(libxl_ctx *ctx, const libxl_uuid uuid);
> /* 0 means ERROR_ENOMEM, which we have logged */
>
> /* events handling */
> diff -r 85bd0f6e8fed tools/libxl/libxl_dom.c
> --- a/tools/libxl/libxl_dom.c Fri Aug 13 13:55:51 2010 +0100
> +++ b/tools/libxl/libxl_dom.c Mon Aug 16 15:39:13 2010 +0100
> @@ -442,19 +442,12 @@ int save_device_model(libxl_ctx *ctx, ui
> return 0;
> }
>
> -char *libxl_uuid2string(libxl_ctx *ctx, const libxl_uuid uuid)
> +char *libxl_uuid2string(libxl_gc *gc, const libxl_uuid uuid)
> {
> - libxl_gc gc = LIBXL_INIT_GC(ctx);
> - char *s = string_of_uuid(&gc, uuid);
> - char *ret;
> - if (!s) {
> - XL_LOG(ctx, XL_LOG_ERROR, "cannot allocate for uuid");
> - ret = NULL;
> - }else{
> - ret = strdup(s);
> - }
> - libxl_free_all(&gc);
> - return ret;
> + char *s = libxl_sprintf(gc, LIBXL_UUID_FMT, LIBXL_UUID_BYTES(uuid));
> + if (!s)
> + XL_LOG(libxl_gc_owner(gc), XL_LOG_ERROR, "cannot allocate for
> uuid"); + return s;
> }
>
> static const char *userdata_path(libxl_gc *gc, uint32_t domid,
> @@ -472,7 +465,7 @@ static const char *userdata_path(libxl_g
> " for domain %"PRIu32, domid);
> return NULL;
> }
> - uuid_string = string_of_uuid(gc, info.uuid);
> + uuid_string = libxl_sprintf(gc, LIBXL_UUID_FMT,
> LIBXL_UUID_BYTES(info.uuid));
>
> path = libxl_sprintf(gc, "/var/lib/xen/"
> "userdata-%s.%s.%s",
> diff -r 85bd0f6e8fed tools/libxl/libxl_internal.h
> --- a/tools/libxl/libxl_internal.h Fri Aug 13 13:55:51 2010 +0100
> +++ b/tools/libxl/libxl_internal.h Mon Aug 16 15:39:13 2010 +0100
> @@ -106,12 +106,6 @@ typedef struct {
>
> #define PRINTF_ATTRIBUTE(x, y) __attribute__((format(printf, x, y)))
>
> -#define UUID_FMT
> "%02hhx%02hhx%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02h
>hx%02hhx%02hhx%02hhx%02hhx" -#define string_of_uuid(ctx, u) \
> - libxl_sprintf(ctx, UUID_FMT, \
> - (u)[0], (u)[1], (u)[2], (u)[3], (u)[4], (u)[5], (u)[6],
> (u)[7], \ - (u)[8], (u)[9], (u)[10], (u)[11], (u)[12],
> (u)[13], (u)[14], (u)[15]) -
> _hidden int xs_writev(struct xs_handle *xsh, xs_transaction_t t, char
> *dir, char *kvs[]);
>
> typedef struct {
> @@ -249,4 +243,6 @@ _hidden char *libxl_abs_path(libxl_gc *g
> _hidden char *_libxl_domid_to_name(libxl_gc *gc, uint32_t domid);
> _hidden char *_libxl_poolid_to_name(libxl_gc *gc, uint32_t poolid);
>
> +_hidden char *libxl_uuid2string(libxl_gc *gc, const libxl_uuid uuid);
> +
> #endif
> diff -r 85bd0f6e8fed tools/libxl/xl.c
> --- a/tools/libxl/xl.c Fri Aug 13 13:55:51 2010 +0100
> +++ b/tools/libxl/xl.c Mon Aug 16 15:39:13 2010 +0100
> @@ -69,8 +69,6 @@ int main(int argc, char **argv)
> exit(1);
> }
>
> - srand(time(0));
> -
> cspec = cmdtable_lookup(cmd);
> if (cspec)
> ret = cspec->cmd_impl(argc, argv);
> diff -r 85bd0f6e8fed tools/libxl/xl_cmdimpl.c
> --- a/tools/libxl/xl_cmdimpl.c Fri Aug 13 13:55:51 2010 +0100
> +++ b/tools/libxl/xl_cmdimpl.c Mon Aug 16 15:39:13 2010 +0100
> @@ -40,8 +40,6 @@
> #include "libxlutil.h"
> #include "xl.h"
>
> -#define UUID_FMT
> "%02hhx%02hhx%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02h
>hx%02hhx%02hhx%02hhx%02hhx" -
> #define CHK_ERRNO( call ) ({ \
> int chk_errno = (call); \
> if (chk_errno < 0) {
> \ @@ -265,19 +263,12 @@ static void init_build_info(libxl_domain
> }
> }
>
> -static void random_uuid(libxl_uuid *uuid)
> -{
> - int i;
> - for (i = 0; i < 16; i++)
> - (*uuid)[i] = rand();
> -}
> -
> static void init_dm_info(libxl_device_model_info *dm_info,
> libxl_domain_create_info *c_info, libxl_domain_build_info *b_info)
> {
> memset(dm_info, '\0', sizeof(*dm_info));
>
> - random_uuid(&dm_info->uuid);
> + libxl_uuid_generate(&dm_info->uuid);
>
> dm_info->dom_name = c_info->name;
> dm_info->device_model = "qemu-dm";
> @@ -304,6 +295,11 @@ static void init_dm_info(libxl_device_mo
>
> static void init_nic_info(libxl_device_nic *nic_info, int devnum)
> {
> + const uint8_t *r;
> + libxl_uuid uuid;
> +
> + libxl_uuid_generate(&uuid);
> + r = libxl_uuid_bytearray(&uuid);
> memset(nic_info, '\0', sizeof(*nic_info));
>
> nic_info->backend_domid = 0;
> @@ -314,9 +310,9 @@ static void init_nic_info(libxl_device_n
> nic_info->mac[0] = 0x00;
> nic_info->mac[1] = 0x16;
> nic_info->mac[2] = 0x3e;
> - nic_info->mac[3] = 1 + (int) (0x7f * (rand() / (RAND_MAX + 1.0)));
> - nic_info->mac[4] = 1 + (int) (0xff * (rand() / (RAND_MAX + 1.0)));
> - nic_info->mac[5] = 1 + (int) (0xff * (rand() / (RAND_MAX + 1.0)));
> + nic_info->mac[3] = r[0] & 0x7f;
> + nic_info->mac[4] = r[1];
> + nic_info->mac[5] = r[2];
> nic_info->ifname = NULL;
> nic_info->bridge = "xenbr0";
> CHK_ERRNO( asprintf(&nic_info->script, "%s/vif-bridge",
> @@ -326,21 +322,26 @@ static void init_nic_info(libxl_device_n
>
> static void init_net2_info(libxl_device_net2 *net2_info, int devnum)
> {
> + const uint8_t *r;
> + libxl_uuid uuid;
> +
> + libxl_uuid_generate(&uuid);
> + r = libxl_uuid_bytearray(&uuid);
> memset(net2_info, '\0', sizeof(*net2_info));
>
> net2_info->devid = devnum;
> net2_info->front_mac[0] = 0x00;
> net2_info->front_mac[1] = 0x16;
> net2_info->front_mac[2] = 0x3e;;
> - net2_info->front_mac[3] = 1 + (int) (0x7f * (rand() / (RAND_MAX +
> 1.0))); - net2_info->front_mac[4] = 1 + (int) (0xff * (rand() /
> (RAND_MAX + 1.0))); - net2_info->front_mac[5] = 1 + (int) (0xff *
> (rand() / (RAND_MAX + 1.0))); + net2_info->front_mac[3] = 0x7f & r[0];
> + net2_info->front_mac[4] = r[1];
> + net2_info->front_mac[5] = r[2];
> net2_info->back_mac[0] = 0x00;
> net2_info->back_mac[1] = 0x16;
> net2_info->back_mac[2] = 0x3e;
> - net2_info->back_mac[3] = 1 + (int) (0x7f * (rand() / (RAND_MAX +
> 1.0))); - net2_info->back_mac[4] = 1 + (int) (0xff * (rand() / (RAND_MAX
> + 1.0))); - net2_info->back_mac[5] = 1 + (int) (0xff * (rand() /
> (RAND_MAX + 1.0))); + net2_info->back_mac[3] = 0x7f & r[3];
> + net2_info->back_mac[4] = r[4];
> + net2_info->back_mac[5] = r[5];
> net2_info->back_trusted = 1;
> net2_info->filter_mac = 1;
> net2_info->max_bypasses = 5;
> @@ -391,11 +392,7 @@ static void printf_info(int domid,
> printf("\t(oos %d)\n", c_info->oos);
> printf("\t(ssidref %d)\n", c_info->ssidref);
> printf("\t(name %s)\n", c_info->name);
> - printf("\t(uuid " UUID_FMT ")\n",
> - (c_info->uuid)[0], (c_info->uuid)[1], (c_info->uuid)[2],
> (c_info->uuid)[3], - (c_info->uuid)[4], (c_info->uuid)[5],
> (c_info->uuid)[6], (c_info->uuid)[7], - (c_info->uuid)[8],
> (c_info->uuid)[9], (c_info->uuid)[10], (c_info->uuid)[11], -
> (c_info->uuid)[12], (c_info->uuid)[13], (c_info->uuid)[14],
> (c_info->uuid)[15]); + printf("\t(uuid " LIBXL_UUID_FMT ")\n",
> LIBXL_UUID_BYTES(c_info->uuid)); printf("\t(cpupool %s (%d))\n",
> c_info->poolname, c_info->poolid); if (c_info->xsdata)
> printf("\t(xsdata contains data)\n");
> @@ -586,7 +583,7 @@ static void parse_config_data(const char
> c_info->name = strdup(buf);
> else
> c_info->name = "test";
> - random_uuid(&c_info->uuid);
> + libxl_uuid_generate(&c_info->uuid);
>
> if (!xlu_cfg_get_long(config, "oos", &l))
> c_info->oos = l;
> @@ -1181,7 +1178,7 @@ static int preserve_domain(libxl_ctx *ct
> return 0;
> }
>
> - random_uuid(&new_uuid);
> + libxl_uuid_generate(&new_uuid);
>
> LOG("Preserving domain %d %s with suffix%s", domid,
> d_config->c_info.name, stime); rc = libxl_domain_preserve(ctx, domid,
> &d_config->c_info, stime, new_uuid); @@ -2169,10 +2166,8 @@ void
> list_domains(int verbose, const lib
> info[i].dying ? 'd' : '-',
> ((float)info[i].cpu_time / 1e9));
> free(domname);
> - if (verbose) {
> - char *uuid = libxl_uuid2string(&ctx, info[i].uuid);
> - printf(" %s", uuid);
> - }
> + if (verbose)
> + printf(" " LIBXL_UUID_FMT, LIBXL_UUID_BYTES(info[i].uuid));
> putchar('\n');
> }
> }
> @@ -2192,11 +2187,7 @@ void list_vm(void)
> printf("UUID ID name\n");
> for (i = 0; i < nb_vm; i++) {
> domname = libxl_domid_to_name(&ctx, info[i].domid);
> - printf(UUID_FMT " %d %-30s\n",
> - info[i].uuid[0], info[i].uuid[1], info[i].uuid[2],
> info[i].uuid[3], - info[i].uuid[4], info[i].uuid[5],
> info[i].uuid[6], info[i].uuid[7], - info[i].uuid[8],
> info[i].uuid[9], info[i].uuid[10], info[i].uuid[11], -
> info[i].uuid[12], info[i].uuid[13], info[i].uuid[14], info[i].uuid[15], +
> printf(LIBXL_UUID_FMT " %d %-30s\n",
> LIBXL_UUID_BYTES(info[i].uuid), info[i].domid, domname);
> free(domname);
> }
> diff -r 85bd0f6e8fed tools/libxl/xl_uuid.h
> --- /dev/null Thu Jan 01 00:00:00 1970 +0000
> +++ b/tools/libxl/xl_uuid.h Mon Aug 16 15:39:13 2010 +0100
> @@ -0,0 +1,151 @@
> +/* Copyright (c) 2008, XenSource Inc.
> + * All rights reserved.
> + *
> + * Redistribution and use in source and binary forms, with or without
> + * modification, are permitted provided that the following conditions are
> met: + * * Redistributions of source code must retain the above
> copyright + * notice, this list of conditions and the following
> disclaimer. + * * Redistributions in binary form must reproduce the
> above copyright + * notice, this list of conditions and the following
> disclaimer in the + * documentation and/or other materials provided
> with the distribution. + * * Neither the name of XenSource Inc. nor the
> names of its contributors + * may be used to endorse or promote
> products derived from this software + * without specific prior
> written permission.
> + *
> + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
> + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
> + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
> + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
> OWNER + * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
> SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
> LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
> DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
> THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
> (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
> OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
> +*/
> +#ifndef __LIBXL_UUID_H__
> +#define __LIBXL_UUID_H__
> +
> +#define LIBXL_UUID_FMT
> "%02hhx%02hhx%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02h
>hx%02hhx%02hhx%02hhx%02hhx" +
> +#if defined(__linux__)
> +
> +#include <uuid/uuid.h>
> +
> +typedef struct {
> + uuid_t uuid;
> +} libxl_uuid;
> +
> +#define LIBXL_UUID_BYTES(arg) arg.uuid[0], arg.uuid[1], arg.uuid[2],
> arg.uuid[3], \
> + arg.uuid[4], arg.uuid[5], arg.uuid[6],
> arg.uuid[7], \
> + arg.uuid[8], arg.uuid[9], arg.uuid[10],
> arg.uuid[11], \
> + arg.uuid[12], arg.uuid[13], arg.uuid[14],
> arg.uuid[15] \
The last '\' is not needed.
> +
> +static inline int libxl_uuid_is_nil(libxl_uuid *uuid)
> +{
> + return uuid_is_null(uuid->uuid);
> +}
> +
> +static inline void libxl_uuid_generate(libxl_uuid *uuid)
> +{
> + uuid_generate(uuid->uuid);
> +}
> +
> +static inline void libxl_uuido_string(libxl_uuid *uuid, char *out, size_t
> size) +{
> + uuid_unparse(uuid->uuid, out);
> +}
> +
> +static inline void libxl_uuid_from_string(libxl_uuid *uuid, const char
> *in) +{
> + uuid_parse(in, uuid->uuid);
> +}
> +
> +static inline void libxl_uuid_copy(libxl_uuid *dst, libxl_uuid *src)
> +{
> + uuid_copy(dst->uuid, src->uuid);
> +}
> +
> +static inline void libxl_uuid_clear(libxl_uuid *uuid)
> +{
> + uuid_clear(uuid->uuid);
> +}
> +
> +static inline int libxl_uuid_compare(libxl_uuid *uuid1, libxl_uuid *uuid2)
> +{
> + return uuid_compare(uuid1->uuid, uuid2->uuid);
> +}
> +
> +static inline const uint8_t *libxl_uuid_bytearray(libxl_uuid *uuid)
> +{
> + return uuid->uuid;
> +}
> +
> +#elif defined(__NetBSD__)
> +
> +#include <uuid.h>
> +#include <string.h>
> +#include <stdlib.h>
> +
> +typedef uuid_t libxl_uuid;
> +#define LIBXL_UUID_BYTES(uuid) uuid[0], uuid[1], uuid[2], uuid[3], \
> + uuid[4], uuid[5], uuid[6], uuid[7], \
> + uuid[8], uuid[9], uuid[10], uuid[11], \
> + uuid[12], uuid[13], uuid[14], uuid[15] \
The last '\' is not needed.
> +
> +static inline int libxl_uuid_is_nil(libxl_uuid *uuid)
> +{
> + uint32_t status;
> + return uuid_is_nil((uuid_t *)uuid, &status);
> +}
> +
> +static inline void libxl_uuid_generate(libxl_uuid *uuid)
> +{
> + uint32_t status;
> + uuid_create((uuid_t *)uuid, &status);
> +}
> +
> +static inline void libxl_uuido_string(libxl_uuid *uuid, char *out, size_t
> size) +{
> + uint32_t status;
> + char *_out = NULL;
> + uuid_to_string((uuid_t *)uuid, &_out, &status);
> + strlcpy(out, _out, size);
> + free(_out);
> +}
> +
> +static inline void libxl_uuid_from_string(libxl_uuid *uuid, const char
> *in) +{
> + uint32_t status;
> + uuid_from_string(in, (uuid_t *)uuid, &status);
> +}
> +
> +static inline void libxl_uuid_copy(libxl_uuid *dst, libxl_uuid *src)
> +{
> + memcpy((uuid_t *)dst, (uuid_t *)src, sizeof(uuid_t));
> +}
> +
> +static inline void libxl_uuid_clear(libxl_uuid *uuid)
> +{
> + memset((uuid_t *)uuid, 0, sizeof(uuid_t));
> +}
> +
> +static inline int libxl_uuid_compare(libxl_uuid *uuid1, libxl_uuid *uuid2)
> +{
> + uint32_t status;
> + return uuid_compare((uuid_t *)uuid1, (uuid_t *)uuid2, &status);
> +}
> +
> +static inline const uint8_t *libxl_uuid_bytearray(libxl_uuid *uuid)
> +{
> + return uuid;
> +}
> +
> +#else
> +
> +#error "Please update libxl_uuid.h for your OS"
> +
> +#endif
> +
> +#endif /* __LIBXL_UUID_H__ */
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