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From e64b48b46cec83203ff8de80a1c56be2c40b2c7d Mon Sep 17 00:00:00 2001
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From: Phil Sutter <psutter@redhat.com>
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Date: Fri, 15 Mar 2019 17:50:10 +0100
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Subject: [PATCH] libiptc: Simplify alloc_handle() function signature
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1525980
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Upstream Status: iptables commit 22ef371abeeec
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commit 22ef371abeeec789bb6a701352dcb961556595c2
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Author: Phil Sutter <phil@nwl.cc>
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Date: Wed Sep 19 15:16:53 2018 +0200
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libiptc: Simplify alloc_handle() function signature
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This change originated from covscan complaining about the strcpy() call
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with an unknown size source buffer. But in fact, the size is known (and
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equal to the destination size), so pass a pointer to STRUCT_GETINFO to
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alloc_handle() instead of it's fields separately. Hopefully this will
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silence covscan.
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Signed-off-by: Phil Sutter <phil@nwl.cc>
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Signed-off-by: Florian Westphal <fw@strlen.de>
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Signed-off-by: Phil Sutter <psutter@redhat.com>
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---
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libiptc/libiptc.c | 14 +++++++-------
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1 file changed, 7 insertions(+), 7 deletions(-)
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diff --git a/libiptc/libiptc.c b/libiptc/libiptc.c
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index 1f61fde53f1db..f6a9862ea9f4d 100644
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--- a/libiptc/libiptc.c
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+++ b/libiptc/libiptc.c
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@@ -1269,7 +1269,7 @@ static int iptcc_compile_table(struct xtc_handle *h, STRUCT_REPLACE *repl)
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/* Allocate handle of given size */
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static struct xtc_handle *
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-alloc_handle(const char *tablename, unsigned int size, unsigned int num_rules)
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+alloc_handle(STRUCT_GETINFO *infop)
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{
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struct xtc_handle *h;
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@@ -1280,14 +1280,14 @@ alloc_handle(const char *tablename, unsigned int size, unsigned int num_rules)
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}
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memset(h, 0, sizeof(*h));
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INIT_LIST_HEAD(&h->chains);
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- strcpy(h->info.name, tablename);
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+ strcpy(h->info.name, infop->name);
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- h->entries = malloc(sizeof(STRUCT_GET_ENTRIES) + size);
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+ h->entries = malloc(sizeof(STRUCT_GET_ENTRIES) + infop->size);
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if (!h->entries)
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goto out_free_handle;
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- strcpy(h->entries->name, tablename);
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- h->entries->size = size;
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+ strcpy(h->entries->name, infop->name);
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+ h->entries->size = infop->size;
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return h;
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@@ -1336,8 +1336,8 @@ retry:
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DEBUGP("valid_hooks=0x%08x, num_entries=%u, size=%u\n",
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info.valid_hooks, info.num_entries, info.size);
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- if ((h = alloc_handle(info.name, info.size, info.num_entries))
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- == NULL) {
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+ h = alloc_handle(&info;;
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+ if (h == NULL) {
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close(sockfd);
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return NULL;
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}
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--
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2.21.0
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