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/*
* Copyright (c) 2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <stdio.h>
#include <sys/socket.h>
#include <linux/if_packet.h>
static const char *errstr;
static long
packet_mreq_membership(int optname, void *optval, socklen_t len)
{
long rc = setsockopt(-1, SOL_PACKET, optname, optval, len);
errstr = sprintrc(rc);
return rc;
}
static void
test_packet_mreq(const int optname, const char *const optname_str)
{
TAIL_ALLOC_OBJECT_CONST_PTR(struct packet_mreq, pmreq);
socklen_t len = sizeof(struct packet_mreq);
/* setsockopt with optname unknown */
packet_mreq_membership(-1, NULL, 0);
printf("setsockopt(-1, SOL_PACKET, %#x /* PACKET_??? */, NULL, 0) = %s\n",
-1, errstr);
/* setsockopt with mr_type unknown */
pmreq->mr_ifindex = 0;
pmreq->mr_alen = ARRAY_SIZE(pmreq->mr_address);
packet_mreq_membership(optname, pmreq, len);
printf("setsockopt(-1, SOL_PACKET, %s, {mr_ifindex=%d,"
" mr_type=%#x /* PACKET_MR_??? */, mr_alen=%d, mr_address=",
optname_str, pmreq->mr_ifindex, pmreq->mr_type, pmreq->mr_alen);
for (unsigned int i = 0; i < ARRAY_SIZE(pmreq->mr_address); i++) {
printf("%02x", pmreq->mr_address[i]);
}
printf("}, %d) = %s\n", len, errstr);
/* setsockopt with mr_type unknown and mr_alen > sizeof(mr_address) */
pmreq->mr_alen = ARRAY_SIZE(pmreq->mr_address) + 1;
packet_mreq_membership(optname, pmreq, len);
printf("setsockopt(-1, SOL_PACKET, %s, {mr_ifindex=%d,"
" mr_type=%#x /* PACKET_MR_??? */, mr_alen=%d, mr_address=",
optname_str, pmreq->mr_ifindex, pmreq->mr_type, pmreq->mr_alen);
for (unsigned int i = 0; i < ARRAY_SIZE(pmreq->mr_address); i++) {
printf("%02x", pmreq->mr_address[i]);
}
printf("}, %d) = %s\n", len, errstr);
/* setsockopt with mr_type unknown and mr_alen < sizeof(mr_address) */
pmreq->mr_alen = ARRAY_SIZE(pmreq->mr_address) - 1;
packet_mreq_membership(optname, pmreq, len);
printf("setsockopt(-1, SOL_PACKET, %s, {mr_ifindex=%d,"
" mr_type=%#x /* PACKET_MR_??? */, mr_alen=%d, mr_address=",
optname_str, pmreq->mr_ifindex, pmreq->mr_type, pmreq->mr_alen);
for (unsigned int i = 0; i < pmreq->mr_alen; i++) {
printf("%02x", pmreq->mr_address[i]);
}
printf("}, %d) = %s\n", len, errstr);
/* setsockopt with valid mr_type */
pmreq->mr_alen = ARRAY_SIZE(pmreq->mr_address);
static const struct {
unsigned short type;
const char *const type_str;
} a[] = {
{ ARG_STR(PACKET_MR_MULTICAST) },
{ ARG_STR(PACKET_MR_PROMISC) },
{ ARG_STR(PACKET_MR_ALLMULTI) },
#ifdef PACKET_MR_UNICAST
{ ARG_STR(PACKET_MR_UNICAST) },
#endif
};
for (unsigned int i = 0; i < ARRAY_SIZE(a); i++) {
pmreq->mr_type = a[i].type;
packet_mreq_membership(optname, pmreq, len);
printf("setsockopt(-1, SOL_PACKET, %s, {mr_ifindex=%d,"
" mr_type=%s, mr_alen=%d, mr_address=",
optname_str, pmreq->mr_ifindex, a[i].type_str, pmreq->mr_alen);
for (unsigned int i = 0; i < pmreq->mr_alen; i++) {
printf("%02x", pmreq->mr_address[i]);
}
printf("}, %d) = %s\n", len, errstr);
}
/* setsockopt with optlen larger than usual */
len = len + 1;
packet_mreq_membership(optname, pmreq, len);
printf("setsockopt(-1, SOL_PACKET, %s, %p,"
" %d) = %s\n", optname_str, pmreq, len, errstr);
}
int
main(void)
{
test_packet_mreq(ARG_STR(PACKET_ADD_MEMBERSHIP));
test_packet_mreq(ARG_STR(PACKET_DROP_MEMBERSHIP));
puts("+++ exited with 0 +++");
return 0;
}
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