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libvirt/tools/virt-host-validate-common.c
Michal Privoznik 7c9a2d88cd virutil: Move string related functions to virstring.c
The source code base needs to be adapted as well. Some files
include virutil.h just for the string related functions (here,
the include is substituted to match the new file), some include
virutil.h without any need (here, the include is removed), and
some require both.
2013-05-02 16:56:55 +02:00

192 lines
4.2 KiB
C

/*
* virt-host-validate-common.c: Sanity check helper APIs
*
* Copyright (C) 2012 Red Hat, Inc.
*
* 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, see
* <http://www.gnu.org/licenses/>.
*
*/
#include <config.h>
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/utsname.h>
#include "virutil.h"
#include "viralloc.h"
#include "virfile.h"
#include "virt-host-validate-common.h"
#include "virstring.h"
static bool quiet;
void virHostMsgSetQuiet(bool quietFlag)
{
quiet = quietFlag;
}
void virHostMsgCheck(const char *prefix,
const char *format,
...)
{
va_list args;
char *msg;
if (quiet)
return;
va_start(args, format);
if (virVasprintf(&msg, format, args) < 0) {
perror("malloc");
abort();
}
va_end(args);
fprintf(stdout, _("%6s: Checking %-60s: "), prefix, msg);
VIR_FREE(msg);
}
static bool virHostMsgWantEscape(void)
{
static bool detectTty = true;
static bool wantEscape = false;
if (detectTty) {
if (isatty(STDOUT_FILENO))
wantEscape = true;
detectTty = false;
}
return wantEscape;
}
void virHostMsgPass(void)
{
if (quiet)
return;
if (virHostMsgWantEscape())
fprintf(stdout, "\033[32m%s\033[0m\n", _("PASS"));
else
fprintf(stdout, "%s\n", _("PASS"));
}
static const char * failMessages[] = {
N_("FAIL"),
N_("WARN"),
N_("NOTE"),
};
verify(ARRAY_CARDINALITY(failMessages) == VIR_HOST_VALIDATE_LAST);
static const char *failEscapeCodes[] = {
"\033[31m",
"\033[33m",
"\033[34m",
};
verify(ARRAY_CARDINALITY(failEscapeCodes) == VIR_HOST_VALIDATE_LAST);
void virHostMsgFail(virHostValidateLevel level,
const char *hint)
{
if (virHostMsgWantEscape())
fprintf(stdout, "%s%s\033[0m (%s)\n",
failEscapeCodes[level], _(failMessages[level]), hint);
else
fprintf(stdout, "%s (%s)\n",
_(failMessages[level]), hint);
}
int virHostValidateDevice(const char *hvname,
const char *dev_name,
virHostValidateLevel level,
const char *hint)
{
virHostMsgCheck(hvname, "for device %s", dev_name);
if (access(dev_name, R_OK|W_OK) < 0) {
virHostMsgFail(level, hint);
return -1;
}
virHostMsgPass();
return 0;
}
bool virHostValidateHasCPUFlag(const char *name)
{
FILE *fp = fopen("/proc/cpuinfo", "r");
bool ret = false;
if (!fp)
return false;
do {
char line[1024];
if (!fgets(line, sizeof(line), fp))
break;
if (strstr(line, name)) {
ret = true;
break;
}
} while (1);
VIR_FORCE_FCLOSE(fp);
return ret;
}
int virHostValidateLinuxKernel(const char *hvname,
int version,
virHostValidateLevel level,
const char *hint)
{
struct utsname uts;
unsigned long thisversion;
uname(&uts);
virHostMsgCheck(hvname, _("for Linux >= %d.%d.%d"),
((version >> 16) & 0xff),
((version >> 8) & 0xff),
(version & 0xff));
if (STRNEQ(uts.sysname, "Linux")) {
virHostMsgFail(level, hint);
return -1;
}
if (virParseVersionString(uts.release, &thisversion, true) < 0) {
virHostMsgFail(level, hint);
return -1;
}
if (thisversion < version) {
virHostMsgFail(level, hint);
return -1;
} else {
virHostMsgPass();
return 0;
}
}