10:38 a.m.
Convert the virebtables.{c,h} files to use the new virFirewall
APIs for changing ebtables rules.
Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com>
---
src/util/virebtables.c | 185 ++++++++++++-------------------------------------
1 file changed, 45 insertions(+), 140 deletions(-)
diff --git a/src/util/virebtables.c b/src/util/virebtables.c
index 2e5c025..2ffff08 100644
--- a/src/util/virebtables.c
+++ b/src/util/virebtables.c
@@ -25,67 +25,18 @@
#include <config.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <errno.h>
-#include <limits.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-
-#ifdef HAVE_PATHS_H
-# include <paths.h>
-#endif
-
#include "internal.h"
#include "virebtables.h"
-#include "vircommand.h"
#include "viralloc.h"
#include "virerror.h"
-#include "virfile.h"
#include "virlog.h"
-#include "virthread.h"
#include "virstring.h"
-#include "virutil.h"
+#include "virfirewall.h"
#define VIR_FROM_THIS VIR_FROM_NONE
VIR_LOG_INIT("util.ebtables");
-#if HAVE_FIREWALLD
-static char *firewall_cmd_path = NULL;
-
-static int
-virEbTablesOnceInit(void)
-{
- firewall_cmd_path = virFindFileInPath("firewall-cmd");
- if (!firewall_cmd_path) {
- VIR_INFO("firewall-cmd not found on system. "
- "firewalld support disabled for ebtables.");
- } else {
- virCommandPtr cmd = virCommandNew(firewall_cmd_path);
-
- virCommandAddArgList(cmd, "--state", NULL);
- if (virCommandRun(cmd, NULL) < 0) {
- VIR_INFO("firewall-cmd found but disabled for ebtables");
- VIR_FREE(firewall_cmd_path);
- firewall_cmd_path = NULL;
- } else {
- VIR_INFO("using firewalld for ebtables commands");
- }
- virCommandFree(cmd);
- }
- return 0;
-}
-
-VIR_ONCE_GLOBAL_INIT(virEbTables)
-
-#endif
-
struct _ebtablesContext
{
char *chain;
@@ -96,84 +47,6 @@ enum {
REMOVE,
};
-
-static int ATTRIBUTE_SENTINEL
-ebtablesAddRemoveRule(const char *arg, ...)
-{
- va_list args;
- int retval = ENOMEM;
- char **argv;
- const char *s;
- int n;
-
- n = 1 + /* /sbin/ebtables */
- 2 + /* --table foo */
- 2 + /* --insert bar */
- 1; /* arg */
-
-#if HAVE_FIREWALLD
- virEbTablesInitialize();
- if (firewall_cmd_path)
- n += 3; /* --direct --passthrough eb */
-#endif
-
- va_start(args, arg);
- while (va_arg(args, const char *))
- n++;
-
- va_end(args);
-
- if (VIR_ALLOC_N(argv, n + 1) < 0)
- goto error;
-
- n = 0;
-
-#if HAVE_FIREWALLD
- if (firewall_cmd_path) {
- if (VIR_STRDUP(argv[n++], firewall_cmd_path) < 0)
- goto error;
- if (VIR_STRDUP(argv[n++], "--direct") < 0)
- goto error;
- if (VIR_STRDUP(argv[n++], "--passthrough") < 0)
- goto error;
- if (VIR_STRDUP(argv[n++], "eb") < 0)
- goto error;
- } else
-#endif
- if (VIR_STRDUP(argv[n++], EBTABLES_PATH) < 0)
- goto error;
-
- if (VIR_STRDUP(argv[n++], arg) < 0)
- goto error;
-
- va_start(args, arg);
-
- while ((s = va_arg(args, const char *))) {
- if (VIR_STRDUP(argv[n++], s) < 0) {
- va_end(args);
- goto error;
- }
- }
-
- va_end(args);
-
- if (virRun((const char **)argv, NULL) < 0) {
- retval = errno;
- goto error;
- }
-
- error:
- if (argv) {
- n = 0;
- while (argv[n])
- VIR_FREE(argv[n++]);
- VIR_FREE(argv);
- }
-
- return retval;
-}
-
-
/**
* ebtablesContextNew:
*
@@ -216,12 +89,30 @@ ebtablesContextFree(ebtablesContext *ctx)
int
ebtablesAddForwardPolicyReject(ebtablesContext *ctx)
{
- ebtablesAddRemoveRule("--new-chain", ctx->chain, NULL,
- NULL);
- ebtablesAddRemoveRule("--insert", "FORWARD", "--jump",
- ctx->chain, NULL);
- return ebtablesAddRemoveRule("-P", ctx->chain, "DROP",
- NULL);
+ virFirewallPtr fw = NULL;
+ int ret = -1;
+
+ fw = virFirewallNew();
+ virFirewallStartTransaction(fw, VIR_FIREWALL_TRANSACTION_IGNORE_ERRORS);
+ virFirewallAddRule(fw, VIR_FIREWALL_LAYER_ETHERNET,
+ "--new-chain", ctx->chain,
+ NULL);
+ virFirewallAddRule(fw, VIR_FIREWALL_LAYER_ETHERNET,
+ "--insert", "FORWARD",
+ "--jump", ctx->chain, NULL);
+
+ virFirewallStartTransaction(fw, 0);
+ virFirewallAddRule(fw, VIR_FIREWALL_LAYER_ETHERNET,
+ "-P", ctx->chain, "DROP",
+ NULL);
+
+ if (virFirewallApply(fw) < 0)
+ goto cleanup;
+
+ ret = 0;
+ cleanup:
+ virFirewallFree(fw);
+ return ret;
}
@@ -234,12 +125,26 @@ ebtablesForwardAllowIn(ebtablesContext *ctx,
const char *macaddr,
int action)
{
- return ebtablesAddRemoveRule(action == ADD ? "--insert" :
"--delete",
- ctx->chain,
- "--in-interface", iface,
- "--source", macaddr,
- "--jump", "ACCEPT",
- NULL);
+ virFirewallPtr fw = NULL;
+ int ret = -1;
+
+ fw = virFirewallNew();
+ virFirewallStartTransaction(fw, 0);
+ virFirewallAddRule(fw, VIR_FIREWALL_LAYER_ETHERNET,
+ action == ADD ? "--insert" : "--delete",
+ ctx->chain,
+ "--in-interface", iface,
+ "--source", macaddr,
+ "--jump", "ACCEPT",
+ NULL);
+
+ if (virFirewallApply(fw) < 0)
+ goto cleanup;
+
+ ret = 0;
+ cleanup:
+ virFirewallFree(fw);
+ return ret;
}
/**
--
1.9.0