[libvirt] [snmp PATCH 15/20] libvirtSnmp: s/showError/printLibvirtError/
Michal Privoznik
mprivozn at redhat.com
Thu Oct 18 12:26:53 UTC 2018
We have two function that do merely the same. Merge them into
one.
Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
src/libvirtSnmp.c | 65 ++++++++----------------------------------
src/libvirtSnmpError.c | 38 ++++++++++++++++++++----
src/libvirtSnmpError.h | 13 ++++++++-
3 files changed, 57 insertions(+), 59 deletions(-)
diff --git a/src/libvirtSnmp.c b/src/libvirtSnmp.c
index 7aa83a1..97bb927 100644
--- a/src/libvirtSnmp.c
+++ b/src/libvirtSnmp.c
@@ -30,6 +30,7 @@
#include <libvirt/virterror.h>
#include "libvirtSnmp.h"
+#include "libvirtSnmpError.h"
#include "libvirtGuestTable.h" /* include our MIB structures*/
#include "libvirtNotifications.h"
@@ -43,17 +44,6 @@
#define ATTRIBUTE_UNUSED __attribute__((__unused__))
#endif
-# ifndef ATTRIBUTE_FMT_PRINTF
-# ifndef __clang__
-# define ATTRIBUTE_FMT_PRINTF(fmtpos, argpos) \
- __attribute__((__format__ (__gnu_printf__, fmtpos, argpos)))
-# else
-# define ATTRIBUTE_FMT_PRINTF(fmtpos, argpos) \
- __attribute__((__format__ (__printf__, fmtpos, argpos)))
-# endif
-# endif
-
-
int verbose = 0;
virConnectPtr conn;
int callbackRet = -1;
@@ -86,37 +76,6 @@ stop(int sig)
run = 0;
}
-static void
-ATTRIBUTE_FMT_PRINTF(1,2)
-showError(const char *fmt, ...)
-{
- const char *libvirtErr = virGetLastErrorMessage();
- char ebuf[1024];
- int rc;
- int size = 0;
- va_list ap;
-
- va_start(ap, fmt);
- rc = vsnprintf(ebuf, sizeof(ebuf), fmt, ap);
- size += rc;
- va_end(ap);
-
- if (rc < 0 || size >= sizeof(ebuf))
- return;
-
- rc = snprintf(ebuf + size, sizeof(ebuf) - size, ": %s\n", libvirtErr);
- size += rc;
-
- if (rc < 0 || size >= sizeof(ebuf))
- return;
-
- fputs(ebuf, stderr);
- snmp_log(LOG_ERR, "%s", ebuf);
-
- virResetLastError();
-}
-
-
static int
insertGuest(netsnmp_container *container, virDomainPtr domain)
{
@@ -126,7 +85,7 @@ insertGuest(netsnmp_container *container, virDomainPtr domain)
unsigned char uuid[VIR_UUID_BUFLEN];
if (virDomainGetInfo(domain, &info) < 0) {
- showError("Failed to get domain info");
+ printLibvirtError("Failed to get domain info");
goto error;
}
@@ -138,7 +97,7 @@ insertGuest(netsnmp_container *container, virDomainPtr domain)
/* set the index of the row */
if (virDomainGetUUID(domain, uuid) < 0) {
- showError("Failed to get domain UUID");
+ printLibvirtError("Failed to get domain UUID");
goto error;
}
@@ -151,7 +110,7 @@ insertGuest(netsnmp_container *container, virDomainPtr domain)
/* set the data */
if (!(name = virDomainGetName(domain))) {
- showError("Failed to get domain name");
+ printLibvirtError("Failed to get domain name");
goto error;
}
@@ -195,7 +154,7 @@ libvirtSnmpLoadGuests(netsnmp_container *container)
virDomainPtr *domains = NULL;
if ((ndomains = virConnectListAllDomains(conn, &domains, 0)) < 0) {
- showError("Failed to list all domains");
+ printLibvirtError("Failed to list all domains");
goto cleanup;
}
@@ -221,7 +180,7 @@ pollingThreadFunc(void *foo)
{
while (run) {
if (virEventRunDefaultImpl() < 0) {
- showError("Failed to run event loop");
+ printLibvirtError("Failed to run event loop");
pthread_exit(NULL);
}
}
@@ -250,7 +209,7 @@ libvirtRegisterEvents(virConnectPtr conn) {
NULL, myFreeFunc);
if (callbackRet == -1) {
- showError("Failed to register libvirt event handler");
+ printLibvirtError("Failed to register libvirt event handler");
goto cleanup;
}
@@ -287,7 +246,7 @@ int libvirtSnmpInit(void)
/* TODO: configure the URI */
/* Use libvirt env variable LIBVIRT_DEFAULT_URI by default*/
if (!(conn = virConnectOpenAuth(NULL, virConnectAuthPtrDefault, 0))) {
- showError("No connection to hypervisor");
+ printLibvirtError("No connection to hypervisor");
return -1;
}
@@ -326,7 +285,7 @@ void libvirtSnmpShutdown(void)
}
if ((rc = virConnectClose(conn))) {
- showError("Failed to disconnect from hypervisor. "
+ printLibvirtError("Failed to disconnect from hypervisor. "
"Leaked references: %d\n", rc);
}
}
@@ -366,7 +325,7 @@ libvirtSnmpCreate(unsigned char *uuid, int state)
}
if (virDomainCreateWithFlags(dom, flags) < 0) {
- showError("Failed to create domain: %s", virDomainGetName(dom));
+ printLibvirtError("Failed to create domain: %s", virDomainGetName(dom));
goto cleanup;
}
@@ -388,7 +347,7 @@ libvirtSnmpDestroy(unsigned char *uuid)
}
if (virDomainDestroy(dom) < 0) {
- showError("Failed to destroy domain %s", virDomainGetName(dom));
+ printLibvirtError("Failed to destroy domain %s", virDomainGetName(dom));
goto cleanup;
}
@@ -421,7 +380,7 @@ libvirtSnmpChangeState(unsigned char *uuid, int newstate, int oldstate)
}
if (ret < 0)
- showError("Failed to change state of %s", virDomainGetName(dom));
+ printLibvirtError("Failed to change state of %s", virDomainGetName(dom));
out:
virDomainFree(dom);
return ret;
diff --git a/src/libvirtSnmpError.c b/src/libvirtSnmpError.c
index 1678bcb..c356aae 100644
--- a/src/libvirtSnmpError.c
+++ b/src/libvirtSnmpError.c
@@ -25,15 +25,43 @@
#include <stdio.h>
#include <libvirt/libvirt.h>
#include <libvirt/virterror.h>
+#include <net-snmp/net-snmp-config.h>
+#include <net-snmp/net-snmp-includes.h>
+#include <net-snmp/agent/net-snmp-agent-includes.h>
#include "libvirtSnmpError.h"
/**
- * Print libvirt error
- * @msg Error message
+ * printLibvirtError:
+ * @fmt: Error message format string
+ *
+ * Print and reset Libvirt error.
*/
-void printLibvirtError(const char *msg) {
- virErrorPtr err = virGetLastError();
+void
+printLibvirtError(const char *fmt, ...)
+{
+ const char *libvirtErr = virGetLastErrorMessage();
+ char ebuf[1024];
+ int rc;
+ int size = 0;
+ va_list ap;
- fprintf(stderr, "%s: %s", msg, err ? err->message : "Unknown error");
+ va_start(ap, fmt);
+ rc = vsnprintf(ebuf, sizeof(ebuf), fmt, ap);
+ size += rc;
+ va_end(ap);
+
+ if (rc < 0 || size >= sizeof(ebuf))
+ return;
+
+ rc = snprintf(ebuf + size, sizeof(ebuf) - size, ": %s\n", libvirtErr);
+ size += rc;
+
+ if (rc < 0 || size >= sizeof(ebuf))
+ return;
+
+ fputs(ebuf, stderr);
+ snmp_log(LOG_ERR, "%s", ebuf);
+
+ virResetLastError();
}
diff --git a/src/libvirtSnmpError.h b/src/libvirtSnmpError.h
index 8dae0cb..46c98f0 100644
--- a/src/libvirtSnmpError.h
+++ b/src/libvirtSnmpError.h
@@ -23,6 +23,17 @@
#ifndef __LIBVIRT_SNMP_ERROR_H__
# define __LIBVIRT_SNMP_ERROR_H__
-void printLibvirtError(const char *msg);
+# ifndef ATTRIBUTE_FMT_PRINTF
+# ifndef __clang__
+# define ATTRIBUTE_FMT_PRINTF(fmtpos, argpos) \
+ __attribute__((__format__ (__gnu_printf__, fmtpos, argpos)))
+# else
+# define ATTRIBUTE_FMT_PRINTF(fmtpos, argpos) \
+ __attribute__((__format__ (__printf__, fmtpos, argpos)))
+# endif
+# endif
+
+void printLibvirtError(const char *fmt, ...)
+ ATTRIBUTE_FMT_PRINTF(1, 2);
#endif /* __LIBVIRT_SNMP_ERROR_H__ */
--
2.18.1
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