libvirt/src/util/sysinfo.c

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/*
* sysinfo.c: get SMBIOS/sysinfo information from the host
*
* Copyright (C) 2010-2011 Red Hat, Inc.
* Copyright (C) 2010 Daniel Veillard
*
* This library 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; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Daniel Veillard <veillard@redhat.com>
*/
#include <config.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include "virterror_internal.h"
#include "sysinfo.h"
#include "util.h"
#include "conf/domain_conf.h"
#include "logging.h"
#include "memory.h"
#include "command.h"
#define VIR_FROM_THIS VIR_FROM_SYSINFO
#define virSmbiosReportError(code, ...) \
virReportErrorHelper(VIR_FROM_SYSINFO, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
#define SYSINFO_SMBIOS_DECODER "dmidecode"
/**
* virSysinfoDefFree:
* @def: a sysinfo structure
*
* Free up the sysinfo structure
*/
void virSysinfoDefFree(virSysinfoDefPtr def)
{
if (def == NULL)
return;
VIR_FREE(def->bios_vendor);
VIR_FREE(def->bios_version);
VIR_FREE(def->bios_date);
VIR_FREE(def->bios_release);
VIR_FREE(def->system_manufacturer);
VIR_FREE(def->system_product);
VIR_FREE(def->system_version);
VIR_FREE(def->system_serial);
VIR_FREE(def->system_uuid);
VIR_FREE(def->system_sku);
VIR_FREE(def->system_family);
VIR_FREE(def);
}
/**
* virSysinfoRead:
*
* Tries to read the SMBIOS information from the current host
*
* Returns: a filled up sysinfo structure or NULL in case of error
*/
#ifdef WIN32
virSysinfoDefPtr
virSysinfoRead(void) {
/*
* this can probably be extracted from Windows using API or registry
* http://www.microsoft.com/whdc/system/platform/firmware/SMBIOS.mspx
*/
virReportSystemError(ENOSYS, "%s",
_("Host sysinfo extraction not supported on this platform"));
return NULL;
}
char *
virSysinfoFormat(virSysinfoDefPtr def ATTRIBUTE_UNUSED,
const char *prefix ATTRIBUTE_UNUSED)
{
virReportSystemError(ENOSYS, "%s",
_("Host sysinfo extraction not supported on this platform"));
return NULL;
}
#else /* !WIN32 */
virSysinfoDefPtr
virSysinfoRead(void) {
char *path, *cur, *eol, *base;
virSysinfoDefPtr ret = NULL;
char *outbuf = NULL;
virCommandPtr cmd;
path = virFindFileInPath(SYSINFO_SMBIOS_DECODER);
if (path == NULL) {
virSmbiosReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to find path for %s binary"),
SYSINFO_SMBIOS_DECODER);
return NULL;
}
cmd = virCommandNewArgList(path, "-q", "-t", "0,1", NULL);
VIR_FREE(path);
virCommandSetOutputBuffer(cmd, &outbuf);
if (virCommandRun(cmd, NULL) < 0) {
virSmbiosReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to execute command %s"),
path);
goto cleanup;
}
if (VIR_ALLOC(ret) < 0)
goto no_memory;
ret->type = VIR_DOMAIN_SYSINFO_SMBIOS;
base = outbuf;
if ((cur = strstr(base, "Vendor: ")) != NULL) {
cur += 8;
eol = strchr(cur, '\n');
if ((eol) && ((ret->bios_vendor = strndup(cur, eol - cur)) == NULL))
goto no_memory;
}
if ((cur = strstr(base, "Version: ")) != NULL) {
cur += 9;
eol = strchr(cur, '\n');
if ((eol) && ((ret->bios_version = strndup(cur, eol - cur)) == NULL))
goto no_memory;
}
if ((cur = strstr(base, "Release Date: ")) != NULL) {
cur += 14;
eol = strchr(cur, '\n');
if ((eol) && ((ret->bios_date = strndup(cur, eol - cur)) == NULL))
goto no_memory;
}
if ((cur = strstr(base, "BIOS Revision: ")) != NULL) {
cur += 15;
eol = strchr(cur, '\n');
if ((eol) && ((ret->bios_release = strndup(cur, eol - cur)) == NULL))
goto no_memory;
}
if ((base = strstr(outbuf, "System Information")) == NULL)
goto cleanup;
if ((cur = strstr(base, "Manufacturer: ")) != NULL) {
cur += 14;
eol = strchr(cur, '\n');
if ((eol) &&
((ret->system_manufacturer = strndup(cur, eol - cur)) == NULL))
goto no_memory;
}
if ((cur = strstr(base, "Product Name: ")) != NULL) {
cur += 14;
eol = strchr(cur, '\n');
if ((eol) && ((ret->system_product = strndup(cur, eol - cur)) == NULL))
goto no_memory;
}
if ((cur = strstr(base, "Version: ")) != NULL) {
cur += 9;
eol = strchr(cur, '\n');
if ((eol) && ((ret->system_version = strndup(cur, eol - cur)) == NULL))
goto no_memory;
}
if ((cur = strstr(base, "Serial Number: ")) != NULL) {
cur += 15;
eol = strchr(cur, '\n');
if ((eol) && ((ret->system_serial = strndup(cur, eol - cur)) == NULL))
goto no_memory;
}
if ((cur = strstr(base, "UUID: ")) != NULL) {
cur += 6;
eol = strchr(cur, '\n');
if ((eol) && ((ret->system_uuid = strndup(cur, eol - cur)) == NULL))
goto no_memory;
}
if ((cur = strstr(base, "SKU Number: ")) != NULL) {
cur += 12;
eol = strchr(cur, '\n');
if ((eol) && ((ret->system_sku = strndup(cur, eol - cur)) == NULL))
goto no_memory;
}
if ((cur = strstr(base, "Family: ")) != NULL) {
cur += 8;
eol = strchr(cur, '\n');
if ((eol) && ((ret->system_family = strndup(cur, eol - cur)) == NULL))
goto no_memory;
}
cleanup:
VIR_FREE(outbuf);
virCommandFree(cmd);
return ret;
no_memory:
virReportOOMError();
virSysinfoDefFree(ret);
ret = NULL;
goto cleanup;
}
/**
* virSysinfoFormat:
* @def: structure to convert to xml string
* @prefix: string to prefix before each line of xml
*
* This returns the XML description of the sysinfo, or NULL after
* generating an error message.
*/
char *
virSysinfoFormat(virSysinfoDefPtr def, const char *prefix)
{
const char *type = virDomainSysinfoTypeToString(def->type);
virBuffer buf = VIR_BUFFER_INITIALIZER;
size_t len = strlen(prefix);
if (!type) {
virSmbiosReportError(VIR_ERR_INTERNAL_ERROR,
_("unexpected sysinfo type model %d"),
def->type);
return NULL;
}
virBufferAsprintf(&buf, "%s<sysinfo type='%s'>\n", prefix, type);
if ((def->bios_vendor != NULL) || (def->bios_version != NULL) ||
(def->bios_date != NULL) || (def->bios_release != NULL)) {
virBufferAsprintf(&buf, "%s <bios>\n", prefix);
if (def->bios_vendor != NULL) {
virBufferAdd(&buf, prefix, len);
virBufferEscapeString(&buf,
" <entry name='vendor'>%s</entry>\n",
def->bios_vendor);
}
if (def->bios_version != NULL) {
virBufferAdd(&buf, prefix, len);
virBufferEscapeString(&buf,
" <entry name='version'>%s</entry>\n",
def->bios_version);
}
if (def->bios_date != NULL) {
virBufferAdd(&buf, prefix, len);
virBufferEscapeString(&buf,
" <entry name='date'>%s</entry>\n",
def->bios_date);
}
if (def->bios_release != NULL) {
virBufferAdd(&buf, prefix, len);
virBufferEscapeString(&buf,
" <entry name='release'>%s</entry>\n",
def->bios_release);
}
virBufferAsprintf(&buf, "%s </bios>\n", prefix);
}
if ((def->system_manufacturer != NULL) || (def->system_product != NULL) ||
(def->system_version != NULL) || (def->system_serial != NULL) ||
(def->system_uuid != NULL) || (def->system_sku != NULL) ||
(def->system_family != NULL)) {
virBufferAsprintf(&buf, "%s <system>\n", prefix);
if (def->system_manufacturer != NULL) {
virBufferAdd(&buf, prefix, len);
virBufferEscapeString(&buf,
" <entry name='manufacturer'>%s</entry>\n",
def->system_manufacturer);
}
if (def->system_product != NULL) {
virBufferAdd(&buf, prefix, len);
virBufferEscapeString(&buf,
" <entry name='product'>%s</entry>\n",
def->system_product);
}
if (def->system_version != NULL) {
virBufferAdd(&buf, prefix, len);
virBufferEscapeString(&buf,
" <entry name='version'>%s</entry>\n",
def->system_version);
}
if (def->system_serial != NULL) {
virBufferAdd(&buf, prefix, len);
virBufferEscapeString(&buf,
" <entry name='serial'>%s</entry>\n",
def->system_serial);
}
if (def->system_uuid != NULL) {
virBufferAdd(&buf, prefix, len);
virBufferEscapeString(&buf,
" <entry name='uuid'>%s</entry>\n",
def->system_uuid);
}
if (def->system_sku != NULL) {
virBufferAdd(&buf, prefix, len);
virBufferEscapeString(&buf,
" <entry name='sku'>%s</entry>\n",
def->system_sku);
}
if (def->system_family != NULL) {
virBufferAdd(&buf, prefix, len);
virBufferEscapeString(&buf,
" <entry name='family'>%s</entry>\n",
def->system_family);
}
virBufferAsprintf(&buf, "%s </system>\n", prefix);
}
virBufferAsprintf(&buf, "%s</sysinfo>\n", prefix);
return virBufferContentAndReset(&buf);
}
#endif /* !WIN32 */