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randomize the initial rpc xid to avoid reply cache collision

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Steve Cai
Steve Cai committed Feb 26, 2013
1 parent 2738507 commit a27561934c35e2ced470a4832e5f9cca5dee4585
Showing with 4 additions and 1 deletion.
  1. +4 −1 lib/init.c
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@@ -25,6 +25,7 @@
#include <string.h>
#include <stdlib.h>
#include <assert.h>
+#include <time.h>
#include "slist.h"
#include "libnfs-zdr.h"
#include "libnfs.h"
@@ -34,6 +35,7 @@
struct rpc_context *rpc_init_context(void)
{
struct rpc_context *rpc;
+ static uint32_t salt = 0;
rpc = malloc(sizeof(struct rpc_context));
if (rpc == NULL) {
@@ -59,7 +61,8 @@ struct rpc_context *rpc_init_context(void)
free(rpc);
return NULL;
}
- rpc->xid = 1;
+ rpc->xid = salt + time(NULL);
+ salt += 0x01000000;
rpc->fd = -1;
return rpc;

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