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From e9db3fdf55cdf3175d96db90313c33f848985960 Mon Sep 17 00:00:00 2001
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From: Simon Kelley <simon@thekelleys.org.uk>
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Date: Fri, 4 Dec 2020 18:35:11 +0000
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Subject: [PATCH] Small cleanups in frec_src datastucture handling.
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---
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src/forward.c | 22 +++++++++++++---------
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1 file changed, 13 insertions(+), 9 deletions(-)
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diff --git a/src/forward.c b/src/forward.c
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index 25ad8b1..c496f86 100644
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--- a/src/forward.c
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+++ b/src/forward.c
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@@ -364,7 +364,10 @@ static int forward_query(int udpfd, union mysockaddr *udpaddr,
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if (!daemon->free_frec_src &&
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daemon->frec_src_count < daemon->ftabsize &&
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(daemon->free_frec_src = whine_malloc(sizeof(struct frec_src))))
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- daemon->frec_src_count++;
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+ {
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+ daemon->frec_src_count++;
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+ daemon->free_frec_src->next = NULL;
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+ }
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/* If we've been spammed with many duplicates, just drop the query. */
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if (daemon->free_frec_src)
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@@ -401,6 +404,7 @@ static int forward_query(int udpfd, union mysockaddr *udpaddr,
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forward->frec_src.orig_id = ntohs(header->id);
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forward->frec_src.dest = *dst_addr;
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forward->frec_src.iface = dst_iface;
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+ forward->frec_src.next = NULL;
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forward->new_id = get_id();
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forward->fd = udpfd;
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memcpy(forward->hash, hash, HASH_SIZE);
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@@ -2262,16 +2266,16 @@ void free_rfd(struct randfd *rfd)
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static void free_frec(struct frec *f)
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{
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- struct frec_src *src, *tmp;
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-
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- /* add back to freelist of not the record builtin to every frec. */
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- for (src = f->frec_src.next; src; src = tmp)
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+ struct frec_src *last;
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+
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+ /* add back to freelist if not the record builtin to every frec. */
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+ for (last = f->frec_src.next; last && last->next; last = last->next) ;
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+ if (last)
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{
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- tmp = src->next;
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- src->next = daemon->free_frec_src;
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- daemon->free_frec_src = src;
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+ last->next = daemon->free_frec_src;
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+ daemon->free_frec_src = f->frec_src.next;
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}
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-
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+
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f->frec_src.next = NULL;
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free_rfd(f->rfd4);
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f->rfd4 = NULL;
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--
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2.26.2
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