From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ua1-x92c.google.com (mail-ua1-x92c.google.com [IPv6:2607:f8b0:4864:20::92c]) by sourceware.org (Postfix) with ESMTPS id E908A3858C27 for ; Fri, 10 Dec 2021 11:03:47 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org E908A3858C27 Received: by mail-ua1-x92c.google.com with SMTP id w23so16099338uao.5 for ; Fri, 10 Dec 2021 03:03:47 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:from:to:references:in-reply-to :content-transfer-encoding; bh=r2L1y1hysuSk8P0zv9iJNeYO5jrOFpC6Cv1B9NRZyHo=; b=OiLdtQhpNlHPnl3T36ywUUSOjOq8gokDKXgX24HzxzXXdmyZsrT+v+JJXIGwyXAx7V XGaxH+BQqR0EJKU71pXbhIwzC4wtcEZOklkrWUQZ8m5YZnoxvzSJnE9GKgqTuh1ORuPI 24/JxjaauFRdhPbgaNTEaie3SGqjygee945lzSpC5lUZhtzNXeEU2WFOYBWU/8/yQoeA krAwiqiyJJbr0j/f9i1yh2esRQANpkdq9OUoqqoIAKJN7vpZ8P0kIjVyQFLRayDryd26 PsvtBRt9Y5HQsYl70F1Sqj2iEdOFJ/JBFPs4mRTelKbPvJkZZJplxrf36EQXsoovHLm/ /FLQ== X-Gm-Message-State: AOAM533jAVwv14xj0gkGaBN0Qzxsk51ElgrFt9f5fqc1+tsW1AfwhyDo 1iyCp2eG57ng7Z8wo7uIkDN4Md0xYcrc4Q== X-Google-Smtp-Source: ABdhPJzH2mWbv4cqLXb2CeKgXGX4OFlOrSAbkEO1D4Vkya6iqO7Ps5BW927NmohUj81GUYooL/3Wkg== X-Received: by 2002:ab0:6f14:: with SMTP id r20mr28020429uah.22.1639134227061; Fri, 10 Dec 2021 03:03:47 -0800 (PST) Received: from ?IPV6:2804:431:c7ca:a776:ce11:d591:8bd5:613f? ([2804:431:c7ca:a776:ce11:d591:8bd5:613f]) by smtp.gmail.com with ESMTPSA id s13sm1746453vkh.32.2021.12.10.03.03.45 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 10 Dec 2021 03:03:46 -0800 (PST) Message-ID: Date: Fri, 10 Dec 2021 08:03:45 -0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.3.2 Subject: Re: [PATCH v2 2/2] linux: Fix ancillary 64-bit time timestamp conversion (BZ #28349, BZ #28350) Content-Language: en-US From: Adhemerval Zanella To: libc-alpha@sourceware.org, Florian Weimer References: <20210929140619.279302-1-adhemerval.zanella@linaro.org> <20210929140619.279302-2-adhemerval.zanella@linaro.org> In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-13.1 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, NICE_REPLY_A, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Dec 2021 11:03:50 -0000 Ping (x4), this seems to be an important fix for 64-bit time_t. On 08/11/2021 15:30, Adhemerval Zanella wrote: > Ping (x3). > > On 20/10/2021 09:08, Adhemerval Zanella wrote: >> Ping (x2). >> >> On 08/10/2021 08:58, Adhemerval Zanella wrote: >>> Ping. >>> >>> On 29/09/2021 11:06, Adhemerval Zanella wrote: >>>> The __convert_scm_timestamps() only updates the control message last >>>> pointer for SOL_SOCKET type, so if the message control buffer contains >>>> multiple ancillary message types the converted timestamp one might >>>> overwrite a valid message. >>>> >>>> The test check if the extra ancillary space is correctly handled >>>> by recvmsg/recvmmsg, where if there is no extra space for the 64-bit >>>> time_t converted message the control buffer should be marked with >>>> MSG_TRUNC. It also check if recvmsg/recvmmsg handle correctly multiple >>>> ancillary data. >>>> >>>> Checked on x86_64-linux and on i686-linux-gnu on both 5.11 and >>>> 4.15 kernel. >>>> >>>> --- >>>> v2: Fix some typos and use support_socket_time64_timestamp. >>>> >>>> --- >>>> sysdeps/unix/sysv/linux/Makefile | 3 + >>>> .../unix/sysv/linux/convert_scm_timestamps.c | 40 +-- >>>> .../sysv/linux/tst-socket-timestamp-time64.c | 1 + >>>> .../unix/sysv/linux/tst-socket-timestamp.c | 338 ++++++++++++++++++ >>>> 4 files changed, 362 insertions(+), 20 deletions(-) >>>> create mode 100644 sysdeps/unix/sysv/linux/tst-socket-timestamp-time64.c >>>> create mode 100644 sysdeps/unix/sysv/linux/tst-socket-timestamp.c >>>> >>>> diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile >>>> index 76ad06361c..3399c87468 100644 >>>> --- a/sysdeps/unix/sysv/linux/Makefile >>>> +++ b/sysdeps/unix/sysv/linux/Makefile >>>> @@ -262,6 +262,9 @@ sysdep_routines += cmsg_nxthdr >>>> CFLAGS-recvmmsg.c = -fexceptions -fasynchronous-unwind-tables >>>> CFLAGS-sendmmsg.c = -fexceptions -fasynchronous-unwind-tables >>>> >>>> +tests += tst-socket-timestamp >>>> +tests-time64 += tst-socket-timestamp-time64 >>>> + >>>> tests-special += $(objpfx)tst-socket-consts.out >>>> $(objpfx)tst-socket-consts.out: ../sysdeps/unix/sysv/linux/tst-socket-consts.py >>>> PYTHONPATH=../scripts \ >>>> diff --git a/sysdeps/unix/sysv/linux/convert_scm_timestamps.c b/sysdeps/unix/sysv/linux/convert_scm_timestamps.c >>>> index 00c934c413..5ee930035b 100644 >>>> --- a/sysdeps/unix/sysv/linux/convert_scm_timestamps.c >>>> +++ b/sysdeps/unix/sysv/linux/convert_scm_timestamps.c >>>> @@ -54,26 +54,26 @@ __convert_scm_timestamps (struct msghdr *msg, socklen_t msgsize) >>>> cmsg != NULL; >>>> cmsg = CMSG_NXTHDR (msg, cmsg)) >>>> { >>>> - if (cmsg->cmsg_level != SOL_SOCKET) >>>> - continue; >>>> - >>>> - switch (cmsg->cmsg_type) >>>> + if (cmsg->cmsg_level == SOL_SOCKET) >>>> { >>>> - case COMPAT_SO_TIMESTAMP_OLD: >>>> - if (type != 0) >>>> - break; >>>> - type = COMPAT_SO_TIMESTAMP_NEW; >>>> - goto common; >>>> - >>>> - case COMPAT_SO_TIMESTAMPNS_OLD: >>>> - type = COMPAT_SO_TIMESTAMPNS_NEW; >>>> - >>>> - /* fallthrough */ >>>> - common: >>>> - memcpy (tmp, CMSG_DATA (cmsg), sizeof (tmp)); >>>> - tvts[0] = tmp[0]; >>>> - tvts[1] = tmp[1]; >>>> - break; >>>> + switch (cmsg->cmsg_type) >>>> + { >>>> + case COMPAT_SO_TIMESTAMP_OLD: >>>> + if (type != 0) >>>> + break; >>>> + type = COMPAT_SO_TIMESTAMP_NEW; >>>> + goto common; >>>> + >>>> + case COMPAT_SO_TIMESTAMPNS_OLD: >>>> + type = COMPAT_SO_TIMESTAMPNS_NEW; >>>> + >>>> + /* fallthrough */ >>>> + common: >>>> + memcpy (tmp, CMSG_DATA (cmsg), sizeof (tmp)); >>>> + tvts[0] = tmp[0]; >>>> + tvts[1] = tmp[1]; >>>> + break; >>>> + } >>>> } >>>> >>>> last = cmsg; >>>> @@ -89,7 +89,7 @@ __convert_scm_timestamps (struct msghdr *msg, socklen_t msgsize) >>>> } >>>> >>>> msg->msg_controllen += CMSG_SPACE (sizeof tvts); >>>> - cmsg = CMSG_NXTHDR(msg, last); >>>> + cmsg = CMSG_NXTHDR (msg, last); >>>> if (cmsg == NULL) >>>> return; >>>> cmsg->cmsg_level = SOL_SOCKET; >>>> diff --git a/sysdeps/unix/sysv/linux/tst-socket-timestamp-time64.c b/sysdeps/unix/sysv/linux/tst-socket-timestamp-time64.c >>>> new file mode 100644 >>>> index 0000000000..ae424c2a70 >>>> --- /dev/null >>>> +++ b/sysdeps/unix/sysv/linux/tst-socket-timestamp-time64.c >>>> @@ -0,0 +1 @@ >>>> +#include "tst-socket-timestamp.c" >>>> diff --git a/sysdeps/unix/sysv/linux/tst-socket-timestamp.c b/sysdeps/unix/sysv/linux/tst-socket-timestamp.c >>>> new file mode 100644 >>>> index 0000000000..9aaa705054 >>>> --- /dev/null >>>> +++ b/sysdeps/unix/sysv/linux/tst-socket-timestamp.c >>>> @@ -0,0 +1,338 @@ >>>> +/* Check recvmsg/recvmmsg 64-bit timestamp support. >>>> + Copyright (C) 2021 Free Software Foundation, Inc. >>>> + This file is part of the GNU C Library. >>>> + >>>> + The GNU C Library is free software; you can redistribute it and/or >>>> + modify it under the terms of the GNU Lesser General Public >>>> + License as published by the Free Software Foundation; either >>>> + version 2.1 of the License, or (at your option) any later version. >>>> + >>>> + The GNU C Library is distributed in the hope that it will be useful, >>>> + but WITHOUT ANY WARRANTY; without even the implied warranty of >>>> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU >>>> + Lesser General Public License for more details. >>>> + >>>> + You should have received a copy of the GNU Lesser General Public >>>> + License along with the GNU C Library; if not, see >>>> + . */ >>>> + >>>> +#include >>>> +#include >>>> +#include >>>> +#include >>>> +#include >>>> +#include >>>> +#include >>>> +#include >>>> +#include >>>> +#include >>>> +#include >>>> +#include >>>> + >>>> +/* Some extra space added for ancillary data, it might be used to convert >>>> + 32-bit timestamp to 64-bit for _TIME_BITS=64. */ >>>> +enum { slack_max_size = 64 }; >>>> +static const int slack[] = { 0, 4, 8, 16, 32, slack_max_size }; >>>> + >>>> +static bool support_64_timestamp; >>>> +/* AF_INET socket and address used to send and receive data. */ >>>> +static int srv; >>>> +static struct sockaddr_in srv_addr; >>>> + >>>> +static int >>>> +do_sendto (const struct sockaddr_in *addr, int nmsgs) >>>> +{ >>>> + int s = xsocket (AF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0); >>>> + xconnect (s, (const struct sockaddr *) addr, sizeof (*addr)); >>>> + >>>> + for (int i = 0; i < nmsgs; i++) >>>> + xsendto (s, &i, sizeof (i), 0, (const struct sockaddr *) addr, >>>> + sizeof (*addr)); >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static void >>>> +do_recvmsg_slack_ancillary (bool use_multi_call, int s, void *cmsg, >>>> + size_t slack, size_t tsize, int exp_msg) >>>> +{ >>>> + int msg; >>>> + struct iovec iov = >>>> + { >>>> + .iov_base = &msg, >>>> + .iov_len = sizeof (msg) >>>> + }; >>>> + size_t msgs = CMSG_SPACE (tsize) + slack; >>>> + struct mmsghdr mmhdr = >>>> + { >>>> + .msg_hdr = >>>> + { >>>> + .msg_name = NULL, >>>> + .msg_namelen = 0, >>>> + .msg_iov = &iov, >>>> + .msg_iovlen = 1, >>>> + .msg_controllen = msgs, >>>> + .msg_control = cmsg != NULL ? cmsg - msgs : NULL, >>>> + }, >>>> + }; >>>> + >>>> + int r; >>>> + if (use_multi_call) >>>> + { >>>> + r = recvmmsg (s, &mmhdr, 1, 0, NULL); >>>> + if (r >= 0) >>>> + r = mmhdr.msg_len; >>>> + } >>>> + else >>>> + r = recvmsg (s, &mmhdr.msg_hdr, 0); >>>> + TEST_COMPARE (r, sizeof (int)); >>>> + TEST_COMPARE (msg, exp_msg); >>>> + >>>> + if (cmsg == NULL) >>>> + return; >>>> + >>>> + /* A timestamp is expected if 32-bit timestamp are used (support in every >>>> + configuration) or if underlying kernel support 64-bit timestamps. >>>> + Otherwise recvmsg will need extra space do add the 64-bit timestamp. */ >>>> + bool exp_timestamp; >>>> + if (sizeof (time_t) == 4 || support_64_timestamp) >>>> + exp_timestamp = true; >>>> + else >>>> + exp_timestamp = slack >= CMSG_SPACE (tsize); >>>> + >>>> + bool timestamp = false; >>>> + for (struct cmsghdr *cmsg = CMSG_FIRSTHDR (&mmhdr.msg_hdr); >>>> + cmsg != NULL; >>>> + cmsg = CMSG_NXTHDR (&mmhdr.msg_hdr, cmsg)) >>>> + { >>>> + if (cmsg->cmsg_level != SOL_SOCKET) >>>> + continue; >>>> + if (cmsg->cmsg_type == SCM_TIMESTAMP >>>> + && cmsg->cmsg_len == CMSG_LEN (sizeof (struct timeval))) >>>> + { >>>> + struct timeval tv; >>>> + memcpy (&tv, CMSG_DATA (cmsg), sizeof (tv)); >>>> + if (test_verbose) >>>> + printf ("SCM_TIMESTAMP: {%jd, %jd}\n", (intmax_t)tv.tv_sec, >>>> + (intmax_t)tv.tv_usec); >>>> + timestamp = true; >>>> + } >>>> + else if (cmsg->cmsg_type == SCM_TIMESTAMPNS >>>> + && cmsg->cmsg_len == CMSG_LEN (sizeof (struct timespec))) >>>> + { >>>> + struct timespec ts; >>>> + memcpy (&ts, CMSG_DATA (cmsg), sizeof (ts)); >>>> + if (test_verbose) >>>> + printf ("SCM_TIMESTAMPNS: {%jd, %jd}\n", (intmax_t)ts.tv_sec, >>>> + (intmax_t)ts.tv_nsec); >>>> + timestamp = true; >>>> + } >>>> + } >>>> + >>>> + /* If there is not timestamp in the ancilliary data, recvmsg should set >>>> + the flag inidcating it. */ >>>> + if (exp_timestamp && !timestamp) >>>> + TEST_VERIFY (mmhdr.msg_hdr.msg_flags & MSG_TRUNC); >>>> + else >>>> + TEST_COMPARE (timestamp, exp_timestamp); >>>> +} >>>> + >>>> +/* Check if the extra ancillary space is correctly handled by recvmsg and >>>> + recvmmsg: if there is no extra space for the 64-bit timestamp the syscall >>>> + should set MSG_TRUNC flag, otherwise an extra cmsghdr with the converted >>>> + timestamp is appended at the message control buffer. */ >>>> +static void >>>> +do_test_slack_space (void) >>>> +{ >>>> + /* Setup the ancillary data buffer with an extra page with PROT_NONE to >>>> + check the possible timestamp conversion on some systems. */ >>>> + struct support_next_to_fault nf = >>>> + support_next_to_fault_allocate (slack_max_size); >>>> + void *msgbuf = nf.buffer + slack_max_size; >>>> + >>>> + /* Enable the timestamp using struct timeval precision. */ >>>> + { >>>> + int r = setsockopt (srv, SOL_SOCKET, SO_TIMESTAMP, &(int){1}, >>>> + sizeof (int)); >>>> + TEST_VERIFY_EXIT (r != -1); >>>> + } >>>> + /* Check recvmsg. */ >>>> + do_sendto (&srv_addr, array_length (slack)); >>>> + for (int s = 0; s < array_length (slack); s++) >>>> + do_recvmsg_slack_ancillary (false, srv, msgbuf, slack[s], >>>> + sizeof (struct timeval), s); >>>> + /* Check recvmmsg. */ >>>> + do_sendto (&srv_addr, array_length (slack)); >>>> + for (int s = 0; s < array_length (slack); s++) >>>> + do_recvmsg_slack_ancillary (true, srv, msgbuf, slack[s], >>>> + sizeof (struct timeval), s); >>>> + >>>> + /* Now enable timestamp using a higher precision, it overwrites the previous >>>> + precision. */ >>>> + { >>>> + int r = setsockopt (srv, SOL_SOCKET, SO_TIMESTAMPNS, &(int){1}, >>>> + sizeof (int)); >>>> + TEST_VERIFY_EXIT (r != -1); >>>> + } >>>> + /* Check recvmsg. */ >>>> + do_sendto (&srv_addr, array_length (slack)); >>>> + for (int s = 0; s < array_length (slack); s++) >>>> + do_recvmsg_slack_ancillary (false, srv, msgbuf, slack[s], >>>> + sizeof (struct timespec), s); >>>> + /* Check recvmmsg. */ >>>> + do_sendto (&srv_addr, array_length (slack)); >>>> + for (int s = 0; s < array_length (slack); s++) >>>> + do_recvmsg_slack_ancillary (true, srv, msgbuf, slack[s], >>>> + sizeof (struct timespec), s); >>>> + >>>> + support_next_to_fault_free (&nf); >>>> +} >>>> + >>>> +/* Check if the converted 64-bit timestamp is correctly appended when there >>>> + are multiple ancillary messages. */ >>>> +static void >>>> +do_recvmsg_multiple_ancillary (bool use_multi_call, int s, void *cmsg, >>>> + size_t cmsgsize, int exp_msg) >>>> +{ >>>> + int msg; >>>> + struct iovec iov = >>>> + { >>>> + .iov_base = &msg, >>>> + .iov_len = sizeof (msg) >>>> + }; >>>> + size_t msgs = cmsgsize; >>>> + struct mmsghdr mmhdr = >>>> + { >>>> + .msg_hdr = >>>> + { >>>> + .msg_name = NULL, >>>> + .msg_namelen = 0, >>>> + .msg_iov = &iov, >>>> + .msg_iovlen = 1, >>>> + .msg_controllen = msgs, >>>> + .msg_control = cmsg, >>>> + }, >>>> + }; >>>> + >>>> + int r; >>>> + if (use_multi_call) >>>> + { >>>> + r = recvmmsg (s, &mmhdr, 1, 0, NULL); >>>> + if (r >= 0) >>>> + r = mmhdr.msg_len; >>>> + } >>>> + else >>>> + r = recvmsg (s, &mmhdr.msg_hdr, 0); >>>> + TEST_COMPARE (r, sizeof (int)); >>>> + TEST_COMPARE (msg, exp_msg); >>>> + >>>> + if (cmsg == NULL) >>>> + return; >>>> + >>>> + bool timestamp = false; >>>> + bool origdstaddr = false; >>>> + for (struct cmsghdr *cmsg = CMSG_FIRSTHDR (&mmhdr.msg_hdr); >>>> + cmsg != NULL; >>>> + cmsg = CMSG_NXTHDR (&mmhdr.msg_hdr, cmsg)) >>>> + { >>>> + if (cmsg->cmsg_level == SOL_IP >>>> + && cmsg->cmsg_type == IP_ORIGDSTADDR >>>> + && cmsg->cmsg_len >= CMSG_LEN (sizeof (struct sockaddr_in))) >>>> + { >>>> + struct sockaddr_in sa; >>>> + memcpy (&sa, CMSG_DATA (cmsg), sizeof (sa)); >>>> + if (test_verbose) >>>> + { >>>> + char str[INET_ADDRSTRLEN]; >>>> + inet_ntop (AF_INET, &sa.sin_addr, str, INET_ADDRSTRLEN); >>>> + printf ("IP_ORIGDSTADDR: %s:%d\n", str, ntohs (sa.sin_port)); >>>> + } >>>> + origdstaddr = sa.sin_addr.s_addr == srv_addr.sin_addr.s_addr >>>> + && sa.sin_port == srv_addr.sin_port; >>>> + } >>>> + if (cmsg->cmsg_level == SOL_SOCKET >>>> + && cmsg->cmsg_type == SCM_TIMESTAMP >>>> + && cmsg->cmsg_len >= CMSG_LEN (sizeof (struct timeval))) >>>> + { >>>> + struct timeval tv; >>>> + memcpy (&tv, CMSG_DATA (cmsg), sizeof (tv)); >>>> + if (test_verbose) >>>> + printf ("SCM_TIMESTAMP: {%jd, %jd}\n", (intmax_t)tv.tv_sec, >>>> + (intmax_t)tv.tv_usec); >>>> + timestamp = true; >>>> + } >>>> + } >>>> + >>>> + /* If there is no timestamp in the ancillary data, recvmsg should set >>>> + the flag to indicate it. */ >>>> + if (!timestamp) >>>> + TEST_VERIFY (mmhdr.msg_hdr.msg_flags & MSG_TRUNC); >>>> + else >>>> + TEST_COMPARE (timestamp, true); >>>> + TEST_COMPARE (origdstaddr, true); >>>> +} >>>> + >>>> +static void >>>> +do_test_multiple_ancillary (void) >>>> +{ >>>> + { >>>> + int r = setsockopt (srv, SOL_SOCKET, SO_TIMESTAMP, &(int){1}, >>>> + sizeof (int)); >>>> + TEST_VERIFY_EXIT (r != -1); >>>> + } >>>> + { >>>> + int r = setsockopt (srv, IPPROTO_IP, IP_RECVORIGDSTADDR, &(int){1}, >>>> + sizeof (int)); >>>> + TEST_VERIFY_EXIT (r != -1); >>>> + } >>>> + >>>> + /* Enougth data for default SO_TIMESTAMP, the IP_RECVORIGDSTADDR, and the >>>> + extra 64-bit SO_TIMESTAMP. */ >>>> + enum { msgbuflen = CMSG_SPACE (2 * sizeof (uint64_t)) >>>> + + CMSG_SPACE (sizeof (struct sockaddr_in)) >>>> + + CMSG_SPACE (2 * sizeof (uint64_t)) }; >>>> + char msgbuf[msgbuflen]; >>>> + >>>> + enum { nmsgs = 8 }; >>>> + /* Check recvmsg. */ >>>> + do_sendto (&srv_addr, nmsgs); >>>> + for (int s = 0; s < nmsgs; s++) >>>> + do_recvmsg_multiple_ancillary (false, srv, msgbuf, msgbuflen, s); >>>> + /* Check recvmmsg. */ >>>> + do_sendto (&srv_addr, nmsgs); >>>> + for (int s = 0; s < nmsgs; s++) >>>> + do_recvmsg_multiple_ancillary (true, srv, msgbuf, msgbuflen, s); >>>> +} >>>> + >>>> +static int >>>> +do_test (void) >>>> +{ >>>> + srv = xsocket (AF_INET, SOCK_DGRAM, 0); >>>> + srv_addr = (struct sockaddr_in) { >>>> + .sin_family = AF_INET, >>>> + .sin_addr = {.s_addr = htonl (INADDR_LOOPBACK) }, >>>> + }; >>>> + xbind (srv, (struct sockaddr *) &srv_addr, sizeof (srv_addr)); >>>> + { >>>> + socklen_t sa_len = sizeof (srv_addr); >>>> + xgetsockname (srv, (struct sockaddr *) &srv_addr, &sa_len); >>>> + TEST_VERIFY (sa_len == sizeof (srv_addr)); >>>> + } >>>> + >>>> + TEST_COMPARE (recvmsg (-1, NULL, 0), -1); >>>> + TEST_COMPARE (errno, EBADF); >>>> + TEST_COMPARE (recvmmsg (-1, NULL, 0, 0, NULL), -1); >>>> + TEST_COMPARE (errno, EBADF); >>>> + >>>> + /* If underlying kernel does not support */ >>>> + support_64_timestamp = support_socket_so_timestamp_time64 (srv); >>>> + >>>> + do_test_slack_space (); >>>> + do_test_multiple_ancillary (); >>>> + >>>> + xclose (srv); >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +#include >>>>