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tests/net-yy-netlink.c: robustify against os specific issues

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* tests/net-yy-netlink.c (main): Pass a pointer to a real struct msghdr
as NULL doesn't work well on some systems.
This commit is contained in:
Дмитрий Левин 2016-05-23 10:26:46 +00:00
parent 1e9dabee66
commit 29df0351a9
1 changed files with 4 additions and 3 deletions
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7
tests/net-yy-netlink.c
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@ -56,6 +56,7 @@ main(void)
};
struct sockaddr *const sa = tail_memdup(&addr, sizeof(addr));
socklen_t * const len = tail_alloc(sizeof(socklen_t));
struct msghdr *const mh = tail_alloc(sizeof(*mh));
*len = sizeof(addr);
const int fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_SOCK_DIAG);
@ -71,9 +72,9 @@ main(void)
"groups=00000000}, %u) = 0\n", fd, inode, magic,
(unsigned) *len);
assert(recvmsg(fd, NULL, MSG_DONTWAIT) == -1);
printf("recvmsg(%d<NETLINK:[SOCK_DIAG:%u]>, NULL, MSG_DONTWAIT)"
" = -1 %s (%m)\n", fd, magic, errno2name());
assert(recvmsg(fd, mh, MSG_DONTWAIT) == -1);
printf("recvmsg(%d<NETLINK:[SOCK_DIAG:%u]>, %p, MSG_DONTWAIT)"
" = -1 %s (%m)\n", fd, magic, mh, errno2name());
assert(close(fd) == 0);
printf("close(%d<NETLINK:[SOCK_DIAG:%u]>) = 0\n", fd, magic);