mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-12-27 16:15:23 +00:00
857df2fe50
In a few places we declare a variable (which is optionally
followed by a code not touching it) then set the variable to a
value and return the variable immediately. It's obvious that the
variable is needless and the value can be returned directly
instead.
This patch was generated using this semantic patch:
@@
type T;
identifier ret;
expression E;
@@
- T ret;
... when != ret
when strict
- ret = E;
- return ret;
+ return E;
After that I fixed couple of formatting issues because coccinelle
formatted some lines differently than our coding style.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
146 lines
3.9 KiB
C
146 lines
3.9 KiB
C
/*
|
|
* viraudit.c: auditing support
|
|
*
|
|
* Copyright (C) 2010-2011 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>
|
|
|
|
#ifdef WITH_AUDIT
|
|
# include <libaudit.h>
|
|
#endif
|
|
|
|
#include "virerror.h"
|
|
#include "virlog.h"
|
|
#include "viraudit.h"
|
|
#include "virfile.h"
|
|
|
|
VIR_LOG_INIT("util.audit");
|
|
|
|
#define VIR_FROM_THIS VIR_FROM_AUDIT
|
|
|
|
#if WITH_AUDIT
|
|
static int auditfd = -1;
|
|
#endif
|
|
static bool auditlog;
|
|
|
|
int virAuditOpen(unsigned int audit_level G_GNUC_UNUSED)
|
|
{
|
|
#if WITH_AUDIT
|
|
if ((auditfd = audit_open()) < 0) {
|
|
/* You get these error codes only when the kernel does not
|
|
* have audit compiled in or it's disabled (e.g. by the kernel
|
|
* cmdline) */
|
|
if (errno == EINVAL || errno == EPROTONOSUPPORT ||
|
|
errno == EAFNOSUPPORT) {
|
|
if (audit_level < 2)
|
|
VIR_INFO("Audit is not supported by the kernel");
|
|
else
|
|
virReportError(VIR_FROM_THIS, "%s", _("Audit is not supported by the kernel"));
|
|
} else {
|
|
virReportSystemError(errno, "%s", _("Unable to initialize audit layer"));
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
}
|
|
|
|
|
|
void virAuditLog(bool logging)
|
|
{
|
|
auditlog = logging;
|
|
}
|
|
|
|
|
|
void virAuditSend(virLogSource *source,
|
|
const char *filename,
|
|
size_t linenr,
|
|
const char *funcname,
|
|
const char *clienttty G_GNUC_UNUSED,
|
|
const char *clientaddr G_GNUC_UNUSED,
|
|
virAuditRecordType type G_GNUC_UNUSED, bool success,
|
|
const char *fmt, ...)
|
|
{
|
|
g_autofree char *str = NULL;
|
|
va_list args;
|
|
|
|
/* Duplicate later checks, to short circuit & avoid printf overhead
|
|
* when nothing is enabled */
|
|
#if WITH_AUDIT
|
|
if (!auditlog && auditfd < 0)
|
|
return;
|
|
#else
|
|
if (!auditlog)
|
|
return;
|
|
#endif
|
|
|
|
va_start(args, fmt);
|
|
str = g_strdup_vprintf(fmt, args);
|
|
va_end(args);
|
|
|
|
if (auditlog && str) {
|
|
if (success)
|
|
virLogMessage(source, VIR_LOG_INFO,
|
|
filename, linenr, funcname,
|
|
NULL, "success=yes %s", str);
|
|
else
|
|
virLogMessage(source, VIR_LOG_WARN,
|
|
filename, linenr, funcname,
|
|
NULL, "success=no %s", str);
|
|
}
|
|
|
|
#if WITH_AUDIT
|
|
if (str && auditfd >= 0) {
|
|
static const int record_types[] = {
|
|
[VIR_AUDIT_RECORD_MACHINE_CONTROL] = AUDIT_VIRT_CONTROL,
|
|
[VIR_AUDIT_RECORD_MACHINE_ID] = AUDIT_VIRT_MACHINE_ID,
|
|
[VIR_AUDIT_RECORD_RESOURCE] = AUDIT_VIRT_RESOURCE,
|
|
};
|
|
|
|
if (type >= G_N_ELEMENTS(record_types) || record_types[type] == 0)
|
|
VIR_WARN("Unknown audit record type %d", type);
|
|
else if (audit_log_user_message(auditfd, record_types[type], str, NULL,
|
|
clientaddr, clienttty, success) < 0) {
|
|
VIR_WARN("Failed to send audit message %s: %s",
|
|
NULLSTR(str), g_strerror(errno));
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void virAuditClose(void)
|
|
{
|
|
#if WITH_AUDIT
|
|
VIR_FORCE_CLOSE(auditfd);
|
|
#endif
|
|
}
|
|
|
|
char *virAuditEncode(const char *key, const char *value)
|
|
{
|
|
#if WITH_AUDIT
|
|
return audit_encode_nv_string(key, value, 0);
|
|
#else
|
|
return g_strdup_printf("%s=%s", key, value);
|
|
#endif
|
|
}
|