From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2EAAEC433E3 for ; Mon, 24 Aug 2020 22:47:05 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E26ED2072D for ; Mon, 24 Aug 2020 22:47:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=syrmia.com header.i=@syrmia.com header.b="P137ZK8U" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E26ED2072D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=syrmia.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:56386 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kALF2-00045X-6i for qemu-devel@archiver.kernel.org; Mon, 24 Aug 2020 18:47:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:58048) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kALEG-0003eK-Ea for qemu-devel@nongnu.org; Mon, 24 Aug 2020 18:46:16 -0400 Received: from mail-eopbgr80129.outbound.protection.outlook.com ([40.107.8.129]:39006 helo=EUR04-VI1-obe.outbound.protection.outlook.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kALED-00059D-JT for qemu-devel@nongnu.org; Mon, 24 Aug 2020 18:46:16 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=nUjZVXlZpN7kKtX4QfGuf3KiPiBXpp5FcwsZQLA9gZkuobe3X1w2n6epxjZx3tXFImNweb/yCpm5d5dSzA7NVs0PbFdiE/6c/OfyPYdx/Tf42ZscYfG3nWSivazAYQCjr/t4O5SXIYeJ1R8j82JtIFRcrQxLbpbjlr3H0BamthncuEnMfbwb5AbaSFww3OfJOCpiSVdnUgIY88+5xJGvjw9PRfGDSsxss9AJThjNZbUjR/8mhCFSU1wrU2+1NDksgjE8msLSyPQPEUme39I1ZFlUslZqZ4g8J0MnDasJMtf2LLbCN6iD/CU9OTcuUiMRFHNkAt7IgO6aGgnrpCsNtg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=N6KIZ9ZswSBlb7850B30zD/evIRLg7FGhAxFrLSo7EE=; b=aNwk80pOKMXC7vybH2kO3F53znKMFjwuPUxn1P82/9a2Yp9UFjwmOYeJ6j9TB16vQUAAdEceEc5xaVQVkwgZF1wTtY+smLXcE+E1nLO9+fGIGXhqWT0nnZBoBKJnhrVWqviB/vKEK63jHavtnAlCQ4Dwr3hpuEOXcwRgZtKPugZAfZfFlz138ZtDze4M1iOzjARINaCHqAQtqcDzeAPwHujXw8w5SpVrwLsQjz3g861kjAws5ydsJmE7V3bZOxTbMCrtIm7YCoBYT3CHfwRrRQ31DyAM5J8WaWaHiEa4DJEX6qlrlxIYfTmvP4uW+2d8yEGtoypNJR1qsR2JhtLBNQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=syrmia.com; dmarc=pass action=none header.from=syrmia.com; dkim=pass header.d=syrmia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=syrmia.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=N6KIZ9ZswSBlb7850B30zD/evIRLg7FGhAxFrLSo7EE=; b=P137ZK8UBN16tkH5hq4eilTh7C8lT9Zh48vE8xzKndrV7N768PV3HA6Rn/3w14IeaqXwF4NjVSP4UHZb0GVvabMxEuyANtUKpJkVBulr2T2sBi+i+qhst06fVJ4pfons5DDbdRBG3XCacb5WHjWKfP0zT0vj3Rypr1E6RV3SctM= Authentication-Results: nongnu.org; dkim=none (message not signed) header.d=none;nongnu.org; dmarc=none action=none header.from=syrmia.com; Received: from VE1PR03MB5246.eurprd03.prod.outlook.com (2603:10a6:802:a1::22) by VI1PR03MB4575.eurprd03.prod.outlook.com (2603:10a6:803:59::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3305.26; Mon, 24 Aug 2020 22:31:07 +0000 Received: from VE1PR03MB5246.eurprd03.prod.outlook.com ([fe80::3568:5b4f:ab6b:e362]) by VE1PR03MB5246.eurprd03.prod.outlook.com ([fe80::3568:5b4f:ab6b:e362%6]) with mapi id 15.20.3261.026; Mon, 24 Aug 2020 22:31:07 +0000 From: Filip Bozuta To: qemu-devel@nongnu.org Subject: [PATCH v2 1/2] linux-user: Add support for ppoll_time64() and pselect6_time64() Date: Tue, 25 Aug 2020 00:30:49 +0200 Message-Id: <20200824223050.92032-2-Filip.Bozuta@syrmia.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200824223050.92032-1-Filip.Bozuta@syrmia.com> References: <20200824223050.92032-1-Filip.Bozuta@syrmia.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: LO2P265CA0070.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:60::34) To VE1PR03MB5246.eurprd03.prod.outlook.com (2603:10a6:802:a1::22) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (147.91.217.235) by LO2P265CA0070.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:60::34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3305.25 via Frontend Transport; Mon, 24 Aug 2020 22:31:05 +0000 X-Mailer: git-send-email 2.25.1 X-Originating-IP: [147.91.217.235] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 8aab561a-66e9-49e1-ded9-08d8487d63da X-MS-TrafficTypeDiagnostic: VI1PR03MB4575: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:8273; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: m27K21jh7hE57PBO2/YaSStZbiG76O5S4dbNHq4GpRsK8bzHRhrJuEdIqFbaTYbUUhdev8ZdCp1ED74/d98VmkN/K+KLjCh0UA88O7NazRU4+QF7sgMUEp6ojuZIY9vZJh78Vw6Jy0ZGlmm8OCR2gZZwMHuFWf25M9CrEcxcgjd06T6WdVaYzyAJVu3X4wpAPJfB7883iV0zzNozgwuFuiVdIrDEnKQVm4Soww2rgbeiVbgL/NCDofXvDP6l223wLddieaDIrAO98UhQKErakoTFakwpasIaCNRYDz8gyu2vIxoqeBOZFTsu/a7YUI+ndA/J9aTrT5b8O/4CC8uCNrSdUaBJFu+itFeYjOmqyrHtycvAjFUetgO6PerYFeud7SftUP7O6NdK+KL9Jek1mmawm+e/j07lTGNrWbYBjlD4FZHleQi11nF+Zv55nC9BfCY/yhbZaVi2uQsQF7NWJQ== X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:VE1PR03MB5246.eurprd03.prod.outlook.com; PTR:; CAT:NONE; SFS:(376002)(136003)(346002)(366004)(396003)(39830400003)(6506007)(6486002)(6916009)(83380400001)(69590400007)(2906002)(956004)(8676002)(2616005)(8936002)(26005)(478600001)(36756003)(54906003)(316002)(966005)(66556008)(66946007)(186003)(16526019)(4326008)(66476007)(6666004)(30864003)(1076003)(52116002)(86362001)(107886003)(6512007)(5660300002); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: syrmia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 8aab561a-66e9-49e1-ded9-08d8487d63da X-MS-Exchange-CrossTenant-AuthSource: VE1PR03MB5246.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Aug 2020 22:31:05.8973 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 19214a73-c1ab-4e19-8f59-14bdcb09a66e X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: zMFsi/6IJRajUpPexEw+8nu0JvsJdHEuAgHAJepgfwEw02mYIOB1NxCmQDl8MFyuE1QKwFGTXqMFls8haDugeQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR03MB4575 Received-SPF: pass client-ip=40.107.8.129; envelope-from=Filip.Bozuta@syrmia.com; helo=EUR04-VI1-obe.outbound.protection.outlook.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/24 18:46:10 X-ACL-Warn: Detected OS = Windows NT kernel [generic] [fuzzy] X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, RCVD_IN_SORBS_WEB=1.5, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Filip Bozuta Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This patch introduces functionality for following time64 syscalls: *ppoll_time64 This is a year 2038 safe variant of: int poll(struct pollfd *fds, nfds_t nfds, int timeout) -- wait for some event on a file descriptor -- man page: https://man7.org/linux/man-pages/man2/ppoll.2.html *pselect6_time64 This is a year 2038 safe variant of: int pselect6(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, const struct timespec *timeout, const sigset_t *sigmask); -- synchronous I/O multiplexing -- man page: https://man7.org/linux/man-pages/man2/pselect6.2.html Implementation notes: Year 2038 safe syscalls in this patch were implemented with the same code as their regular variants (ppoll() and pselect()). This code was moved to new functions ('do_ppoll()' and 'do_pselect6()') that take a 'bool time64' from which a right 'struct timespec' converting function is called. (target_to_host/host_to_target_timespec() for regular and target_to_host/host_to_target_timespec64() for time64 variants) Signed-off-by: Filip Bozuta --- linux-user/syscall.c | 462 +++++++++++++++++++++++-------------------- 1 file changed, 251 insertions(+), 211 deletions(-) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 1211e759c2..fc6a6e32e4 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -397,7 +397,7 @@ static int sys_getcwd1(char *buf, size_t size) return strlen(buf)+1; } -#ifdef TARGET_NR_utimensat +#if defined(TARGET_NR_utimensat) #if defined(__NR_utimensat) #define __NR_sys_utimensat __NR_utimensat _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname, @@ -763,11 +763,11 @@ safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \ int, options, struct rusage *, rusage) safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp) #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \ - defined(TARGET_NR_pselect6) + defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \ fd_set *, exceptfds, struct timespec *, timeout, void *, sig) #endif -#if defined(TARGET_NR_ppoll) || defined(TARGET_NR_poll) +#if defined(TARGET_NR_ppoll) || defined(TARGET_NR_ppoll_time64) safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds, struct timespec *, tsp, const sigset_t *, sigmask, size_t, sigsetsize) @@ -984,7 +984,7 @@ abi_long do_brk(abi_ulong new_brk) } #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \ - defined(TARGET_NR_pselect6) + defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) static inline abi_long copy_from_user_fdset(fd_set *fds, abi_ulong target_fds_addr, int n) @@ -1252,7 +1252,8 @@ static inline abi_long target_to_host_timespec(struct timespec *host_ts, } #endif -#if defined(TARGET_NR_clock_settime64) || defined(TARGET_NR_futex_time64) +#if defined(TARGET_NR_clock_settime64) || defined(TARGET_NR_futex_time64) || \ + defined(TARGET_NR_pselect6_time64) || defined(TARGET_NR_ppoll_time64) static inline abi_long target_to_host_timespec64(struct timespec *host_ts, abi_ulong target_addr) { @@ -1458,6 +1459,237 @@ static abi_long do_old_select(abi_ulong arg1) #endif #endif +#if defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64) +static abi_long do_pselect6(abi_long arg1, abi_long arg2, abi_long arg3, + abi_long arg4, abi_long arg5, abi_long arg6, + bool time64) +{ + abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr; + fd_set rfds, wfds, efds; + fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; + struct timespec ts, *ts_ptr; + abi_long ret; + + /* + * The 6th arg is actually two args smashed together, + * so we cannot use the C library. + */ + sigset_t set; + struct { + sigset_t *set; + size_t size; + } sig, *sig_ptr; + + abi_ulong arg_sigset, arg_sigsize, *arg7; + target_sigset_t *target_sigset; + + n = arg1; + rfd_addr = arg2; + wfd_addr = arg3; + efd_addr = arg4; + ts_addr = arg5; + + ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); + if (ret) { + return ret; + } + ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); + if (ret) { + return ret; + } + ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); + if (ret) { + return ret; + } + + /* + * This takes a timespec, and not a timeval, so we cannot + * use the do_select() helper ... + */ + if (ts_addr) { + if (time64) { + if (target_to_host_timespec64(&ts, ts_addr)) { + return -TARGET_EFAULT; + } + } else { + if (target_to_host_timespec(&ts, ts_addr)) { + return -TARGET_EFAULT; + } + } + ts_ptr = &ts; + } else { + ts_ptr = NULL; + } + + /* Extract the two packed args for the sigset */ + if (arg6) { + sig_ptr = &sig; + sig.size = SIGSET_T_SIZE; + + arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1); + if (!arg7) { + return -TARGET_EFAULT; + } + arg_sigset = tswapal(arg7[0]); + arg_sigsize = tswapal(arg7[1]); + unlock_user(arg7, arg6, 0); + + if (arg_sigset) { + sig.set = &set; + if (arg_sigsize != sizeof(*target_sigset)) { + /* Like the kernel, we enforce correct size sigsets */ + return -TARGET_EINVAL; + } + target_sigset = lock_user(VERIFY_READ, arg_sigset, + sizeof(*target_sigset), 1); + if (!target_sigset) { + return -TARGET_EFAULT; + } + target_to_host_sigset(&set, target_sigset); + unlock_user(target_sigset, arg_sigset, 0); + } else { + sig.set = NULL; + } + } else { + sig_ptr = NULL; + } + + ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, + ts_ptr, sig_ptr)); + + if (!is_error(ret)) { + if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) { + return -TARGET_EFAULT; + } + if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) { + return -TARGET_EFAULT; + } + if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) { + return -TARGET_EFAULT; + } + if (time64) { + if (ts_addr && host_to_target_timespec(ts_addr, &ts)) { + return -TARGET_EFAULT; + } + } else { + if (ts_addr && host_to_target_timespec64(ts_addr, &ts)) { + return -TARGET_EFAULT; + } + } + } + return ret; +} +#endif + +#if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) || \ + defined(TARGET_NR_ppoll_time64) +static abi_long do_ppoll(abi_long arg1, abi_long arg2, abi_long arg3, + abi_long arg4, abi_long arg5, bool ppoll, bool time64) +{ + struct target_pollfd *target_pfd; + unsigned int nfds = arg2; + struct pollfd *pfd; + unsigned int i; + abi_long ret; + + pfd = NULL; + target_pfd = NULL; + if (nfds) { + if (nfds > (INT_MAX / sizeof(struct target_pollfd))) { + return -TARGET_EINVAL; + } + target_pfd = lock_user(VERIFY_WRITE, arg1, + sizeof(struct target_pollfd) * nfds, 1); + if (!target_pfd) { + return -TARGET_EFAULT; + } + + pfd = alloca(sizeof(struct pollfd) * nfds); + for (i = 0; i < nfds; i++) { + pfd[i].fd = tswap32(target_pfd[i].fd); + pfd[i].events = tswap16(target_pfd[i].events); + } + } + if (ppoll) { + struct timespec _timeout_ts, *timeout_ts = &_timeout_ts; + target_sigset_t *target_set; + sigset_t _set, *set = &_set; + + if (arg3) { + if (time64) { + if (target_to_host_timespec64(timeout_ts, arg3)) { + unlock_user(target_pfd, arg1, 0); + return -TARGET_EFAULT; + } + } else { + if (target_to_host_timespec(timeout_ts, arg3)) { + unlock_user(target_pfd, arg1, 0); + return -TARGET_EFAULT; + } + } + } else { + timeout_ts = NULL; + } + + if (arg4) { + if (arg5 != sizeof(target_sigset_t)) { + unlock_user(target_pfd, arg1, 0); + return -TARGET_EINVAL; + } + + target_set = lock_user(VERIFY_READ, arg4, + sizeof(target_sigset_t), 1); + if (!target_set) { + unlock_user(target_pfd, arg1, 0); + return -TARGET_EFAULT; + } + target_to_host_sigset(set, target_set); + } else { + set = NULL; + } + + ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts, + set, SIGSET_T_SIZE)); + + if (!is_error(ret) && arg3) { + if (time64) { + if (host_to_target_timespec64(arg3, timeout_ts)) { + return -TARGET_EFAULT; + } + } else { + if (host_to_target_timespec(arg3, timeout_ts)) { + return -TARGET_EFAULT; + } + } + } + if (arg4) { + unlock_user(target_set, arg4, 0); + } + } else { + struct timespec ts, *pts; + + if (arg3 >= 0) { + /* Convert ms to secs, ns */ + ts.tv_sec = arg3 / 1000; + ts.tv_nsec = (arg3 % 1000) * 1000000LL; + pts = &ts; + } else { + /* -ve poll() timeout means "infinite" */ + pts = NULL; + } + ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0)); + } + + if (!is_error(ret)) { + for (i = 0; i < nfds; i++) { + target_pfd[i].revents = tswap16(pfd[i].revents); + } + } + unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds); + return ret; +} +#endif + static abi_long do_pipe2(int host_pipe[], int flags) { #ifdef CONFIG_PIPE2 @@ -9045,106 +9277,11 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR_pselect6 case TARGET_NR_pselect6: - { - abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr; - fd_set rfds, wfds, efds; - fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; - struct timespec ts, *ts_ptr; - - /* - * The 6th arg is actually two args smashed together, - * so we cannot use the C library. - */ - sigset_t set; - struct { - sigset_t *set; - size_t size; - } sig, *sig_ptr; - - abi_ulong arg_sigset, arg_sigsize, *arg7; - target_sigset_t *target_sigset; - - n = arg1; - rfd_addr = arg2; - wfd_addr = arg3; - efd_addr = arg4; - ts_addr = arg5; - - ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); - if (ret) { - return ret; - } - ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); - if (ret) { - return ret; - } - ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); - if (ret) { - return ret; - } - - /* - * This takes a timespec, and not a timeval, so we cannot - * use the do_select() helper ... - */ - if (ts_addr) { - if (target_to_host_timespec(&ts, ts_addr)) { - return -TARGET_EFAULT; - } - ts_ptr = &ts; - } else { - ts_ptr = NULL; - } - - /* Extract the two packed args for the sigset */ - if (arg6) { - sig_ptr = &sig; - sig.size = SIGSET_T_SIZE; - - arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1); - if (!arg7) { - return -TARGET_EFAULT; - } - arg_sigset = tswapal(arg7[0]); - arg_sigsize = tswapal(arg7[1]); - unlock_user(arg7, arg6, 0); - - if (arg_sigset) { - sig.set = &set; - if (arg_sigsize != sizeof(*target_sigset)) { - /* Like the kernel, we enforce correct size sigsets */ - return -TARGET_EINVAL; - } - target_sigset = lock_user(VERIFY_READ, arg_sigset, - sizeof(*target_sigset), 1); - if (!target_sigset) { - return -TARGET_EFAULT; - } - target_to_host_sigset(&set, target_sigset); - unlock_user(target_sigset, arg_sigset, 0); - } else { - sig.set = NULL; - } - } else { - sig_ptr = NULL; - } - - ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, - ts_ptr, sig_ptr)); - - if (!is_error(ret)) { - if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) - return -TARGET_EFAULT; - if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) - return -TARGET_EFAULT; - if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) - return -TARGET_EFAULT; - - if (ts_addr && host_to_target_timespec(ts_addr, &ts)) - return -TARGET_EFAULT; - } - } - return ret; + return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, false); +#endif +#ifdef TARGET_NR_pselect6_time64 + case TARGET_NR_pselect6_time64: + return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, true); #endif #ifdef TARGET_NR_symlink case TARGET_NR_symlink: @@ -10076,114 +10213,17 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, case TARGET_NR__newselect: return do_select(arg1, arg2, arg3, arg4, arg5); #endif -#if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) -# ifdef TARGET_NR_poll +#ifdef TARGET_NR_poll case TARGET_NR_poll: -# endif -# ifdef TARGET_NR_ppoll + return do_ppoll(arg1, arg2, arg3, arg4, arg5, false, false); +#endif +#ifdef TARGET_NR_ppoll case TARGET_NR_ppoll: -# endif - { - struct target_pollfd *target_pfd; - unsigned int nfds = arg2; - struct pollfd *pfd; - unsigned int i; - - pfd = NULL; - target_pfd = NULL; - if (nfds) { - if (nfds > (INT_MAX / sizeof(struct target_pollfd))) { - return -TARGET_EINVAL; - } - - target_pfd = lock_user(VERIFY_WRITE, arg1, - sizeof(struct target_pollfd) * nfds, 1); - if (!target_pfd) { - return -TARGET_EFAULT; - } - - pfd = alloca(sizeof(struct pollfd) * nfds); - for (i = 0; i < nfds; i++) { - pfd[i].fd = tswap32(target_pfd[i].fd); - pfd[i].events = tswap16(target_pfd[i].events); - } - } - - switch (num) { -# ifdef TARGET_NR_ppoll - case TARGET_NR_ppoll: - { - struct timespec _timeout_ts, *timeout_ts = &_timeout_ts; - target_sigset_t *target_set; - sigset_t _set, *set = &_set; - - if (arg3) { - if (target_to_host_timespec(timeout_ts, arg3)) { - unlock_user(target_pfd, arg1, 0); - return -TARGET_EFAULT; - } - } else { - timeout_ts = NULL; - } - - if (arg4) { - if (arg5 != sizeof(target_sigset_t)) { - unlock_user(target_pfd, arg1, 0); - return -TARGET_EINVAL; - } - - target_set = lock_user(VERIFY_READ, arg4, sizeof(target_sigset_t), 1); - if (!target_set) { - unlock_user(target_pfd, arg1, 0); - return -TARGET_EFAULT; - } - target_to_host_sigset(set, target_set); - } else { - set = NULL; - } - - ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts, - set, SIGSET_T_SIZE)); - - if (!is_error(ret) && arg3) { - host_to_target_timespec(arg3, timeout_ts); - } - if (arg4) { - unlock_user(target_set, arg4, 0); - } - break; - } -# endif -# ifdef TARGET_NR_poll - case TARGET_NR_poll: - { - struct timespec ts, *pts; - - if (arg3 >= 0) { - /* Convert ms to secs, ns */ - ts.tv_sec = arg3 / 1000; - ts.tv_nsec = (arg3 % 1000) * 1000000LL; - pts = &ts; - } else { - /* -ve poll() timeout means "infinite" */ - pts = NULL; - } - ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0)); - break; - } -# endif - default: - g_assert_not_reached(); - } - - if (!is_error(ret)) { - for(i = 0; i < nfds; i++) { - target_pfd[i].revents = tswap16(pfd[i].revents); - } - } - unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds); - } - return ret; + return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, false); +#endif +#ifdef TARGET_NR_ppoll_time64 + case TARGET_NR_ppoll_time64: + return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, true); #endif case TARGET_NR_flock: /* NOTE: the flock constant seems to be the same for every -- 2.25.1