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19 Mar 2020 06:54:28 +0800 IronPort-SDR: UXmzTmKOa7nYI4rC4EQ+ehNaV7nBYPjbUTlLW44Ud3ks71FkdF7B0YyobGsDW6wI+cNW7H9cuM /2UVOVvXOrDvHu2l9553ZUwp4wN28vgbJhd49QiyxSLOKocmWiTC1/DiTKHdBeBMwSzjQB+r4p NOApb7XX9gL8Sm55wlTukZZ5yCoH9+7ucPZkiuiAXQgwEsr7T7VRY4vk9fCehKAsuZSQgBeri+ szHFkJm7KXH/o7rxhjcN6yiOT2chiPAQlvNq1KMemg0njVysB+pei2pQsA2t7vlO+z4dJNNB8w 3TiSYHd58avu032cmHd1eXBw Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Mar 2020 15:46:17 -0700 IronPort-SDR: Dxd9JYzpDtCj32Z76IDpy2id3sVgp3RsV/xdirD6KR5dZhRR6WErqERCsPUNdKF7w2dUvk+UrT J03CwUuxCTHDDRwQDaQzblmHKy0aou3zwKx8IpPHHtqsGnKmsNoMgpdp450de96QijoW1tBACY cdvYD9fKyACg1JXQPmgrJMyYCBGSZm0m97quCyGalU2PX0eTQOynyHE30ZhGufhsaAnt3Drlmv 5wOHEQJ0x/0PS0xd4lDKmi2C4dfPsNxPII3F0SeubuXergBMoc5XJBP63JMuZB+V/VlkuA2miS yMw= WDCIronportException: Internal Received: from usa005961.ad.shared (HELO risc6-mainframe.hgst.com) ([10.86.54.167]) by uls-op-cesaip02.wdc.com with ESMTP; 18 Mar 2020 15:54:28 -0700 From: Alistair Francis To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org, laurent@vivier.eu Subject: [PATCH v9 2/4] linux-user/syscall: Add support for clock_gettime64/clock_settime64 Date: Wed, 18 Mar 2020 15:46:58 -0700 Message-Id: <56b8fd28a0faca77ee8adfc90e4eb2bc3750edf5.1584571250.git.alistair.francis@wdc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-detected-operating-system: by eggs.gnu.org: FreeBSD 9.x [fuzzy] X-Received-From: 216.71.154.45 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: alistair.francis@wdc.com, palmer@dabbelt.com, alistair23@gmail.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Add support for the clock_gettime64/clock_settime64 syscalls. If your host is 64-bit or is 32-bit with the *_time64 syscall then the timespec will correctly be a 64-bit time_t. Otherwise the host will return a 32-bit time_t which will be rounded to 64-bits. This will be incorrect after y2038. Signed-off-by: Alistair Francis Reviewed-by: Laurent Vivier --- linux-user/syscall.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 909bec94a5..60fd775d9c 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -1229,6 +1229,22 @@ static inline abi_long target_to_host_timespec(struct timespec *host_ts, } #endif +#if defined(TARGET_NR_clock_settime64) +static inline abi_long target_to_host_timespec64(struct timespec *host_ts, + abi_ulong target_addr) +{ + struct target__kernel_timespec *target_ts; + + if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) { + return -TARGET_EFAULT; + } + __get_user(host_ts->tv_sec, &target_ts->tv_sec); + __get_user(host_ts->tv_nsec, &target_ts->tv_nsec); + unlock_user_struct(target_ts, target_addr, 0); + return 0; +} +#endif + static inline abi_long host_to_target_timespec(abi_ulong target_addr, struct timespec *host_ts) { @@ -11458,6 +11474,18 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, return ret; } #endif +#ifdef TARGET_NR_clock_settime64 + case TARGET_NR_clock_settime64: + { + struct timespec ts; + + ret = target_to_host_timespec64(&ts, arg2); + if (!is_error(ret)) { + ret = get_errno(clock_settime(arg1, &ts)); + } + return ret; + } +#endif #ifdef TARGET_NR_clock_gettime case TARGET_NR_clock_gettime: { @@ -11469,6 +11497,17 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, return ret; } #endif +#ifdef TARGET_NR_clock_gettime64 + case TARGET_NR_clock_gettime64: + { + struct timespec ts; + ret = get_errno(clock_gettime(arg1, &ts)); + if (!is_error(ret)) { + ret = host_to_target_timespec64(arg2, &ts); + } + return ret; + } +#endif #ifdef TARGET_NR_clock_getres case TARGET_NR_clock_getres: { -- 2.25.1