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commit 583a27d525ae189bdfaa6784021b92a9a1dae12e
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Mon Apr 9 10:08:07 2018 +0200
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resolv: Fully initialize struct mmsghdr in send_dg [BZ #23037]
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diff --git a/resolv/res_send.c b/resolv/res_send.c
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index 478d542419566574..05c7ba511b0383c1 100644
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--- a/resolv/res_send.c
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+++ b/resolv/res_send.c
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@@ -1154,25 +1154,27 @@ send_dg(res_state statp,
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if (have_sendmmsg >= 0 && nwritten == 0 && buf2 != NULL
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&& !single_request)
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{
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- struct iovec iov[2];
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- struct mmsghdr reqs[2];
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- reqs[0].msg_hdr.msg_name = NULL;
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- reqs[0].msg_hdr.msg_namelen = 0;
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- reqs[0].msg_hdr.msg_iov = &iov[0];
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- reqs[0].msg_hdr.msg_iovlen = 1;
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- iov[0].iov_base = (void *) buf;
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- iov[0].iov_len = buflen;
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- reqs[0].msg_hdr.msg_control = NULL;
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- reqs[0].msg_hdr.msg_controllen = 0;
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-
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- reqs[1].msg_hdr.msg_name = NULL;
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- reqs[1].msg_hdr.msg_namelen = 0;
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- reqs[1].msg_hdr.msg_iov = &iov[1];
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- reqs[1].msg_hdr.msg_iovlen = 1;
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- iov[1].iov_base = (void *) buf2;
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- iov[1].iov_len = buflen2;
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- reqs[1].msg_hdr.msg_control = NULL;
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- reqs[1].msg_hdr.msg_controllen = 0;
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+ struct iovec iov =
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+ { .iov_base = (void *) buf, .iov_len = buflen };
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+ struct iovec iov2 =
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+ { .iov_base = (void *) buf2, .iov_len = buflen2 };
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+ struct mmsghdr reqs[2] =
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+ {
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+ {
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+ .msg_hdr =
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+ {
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+ .msg_iov = &iov,
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+ .msg_iovlen = 1,
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+ },
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+ },
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+ {
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+ .msg_hdr =
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+ {
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+ .msg_iov = &iov2,
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+ .msg_iovlen = 1,
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+ }
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+ },
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+ };
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int ndg = __sendmmsg (pfd[0].fd, reqs, 2, MSG_NOSIGNAL);
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if (__glibc_likely (ndg == 2))
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