From patchwork Thu Mar 19 09:26:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 1258062 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=vivier.eu 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 ozlabs.org (Postfix) with ESMTPS id 48jhTb1PkCz9sNg for ; Thu, 19 Mar 2020 20:30:27 +1100 (AEDT) Received: from localhost ([::1]:35284 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jErVR-00046j-1Z for incoming@patchwork.ozlabs.org; Thu, 19 Mar 2020 05:30:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40981) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jErS0-0005VC-6b for qemu-devel@nongnu.org; Thu, 19 Mar 2020 05:26:54 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jErRx-0004FQ-Cm for qemu-devel@nongnu.org; Thu, 19 Mar 2020 05:26:52 -0400 Received: from mout.kundenserver.de ([212.227.126.187]:35973) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1jErRx-0004ER-2T for qemu-devel@nongnu.org; Thu, 19 Mar 2020 05:26:49 -0400 Received: from localhost.localdomain ([82.252.135.106]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis) id 1M91Tq-1jAzpj40HO-0063xX; Thu, 19 Mar 2020 10:26:38 +0100 From: Laurent Vivier To: qemu-devel@nongnu.org Subject: [PULL v3 10/16] linux-user: Protect more syscalls Date: Thu, 19 Mar 2020 10:26:21 +0100 Message-Id: <20200319092627.51487-11-laurent@vivier.eu> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200319092627.51487-1-laurent@vivier.eu> References: <20200319092627.51487-1-laurent@vivier.eu> MIME-Version: 1.0 X-Provags-ID: V03:K1:JWO/hTcjNc79nqn5uCye3/2GkvCs3ofTGo2CJTv6DfNKsyp7c3q atkWsQz2LW0udhV1efV9xxuB6JQlLsBIk5yOBKxU6Zqs5/hL1o0+OFyKRUDRwx7f0aTjtop uftAx6EQPbaCWXDiqnQsSUdjBWB5TChfJrdIxPnu+5qQN25TnUpl/xMXQN/fahMJCKcLeys Erf6Cn0hDDim95lfKJVlA== X-UI-Out-Filterresults: notjunk:1; V03:K0:izPB/Mrth70=:js0t43xeWKvxWDNezEoAIG HXjQgmhY5JA+DWl3bpC3EfDq70+5fGhTi4Kv9bZwWS8QtylOfZh/SIaV+oh5Q2Ji4Q4qnRT3m T64MJDb3Ja4R5kQISj1So+qxrXZLcNDNpcWotggOpJWe4w1mmCSaOjzwCtF99HMnlkR2qAEbD VQa+F8f1ipBMyoV7hKm1vyFGMuOK0+DFWAPfxkoAfHtXYX5JxCZsEICnerDkr8Y8eOuW/3yjb 9tpOMnNxbsHeHJwCo/lCtdsqG+x1O35DlPEvpaAUJ4J/s25lQEKww+ECq+O5zs4DZYWB+bhGD pTehX8hto6Iynh5G7EUPVd4WH+hcKKhk+G2sbzLDLsDETPYuHHzUIAj5Vo3Oh9oOJTzvkSva5 C6qT8sZC74BybrgLlmespWpBNUnNfaQVp5gQkT9XiiZv65llPrlOycj+Rc6vYzueWreHFUHDc pRS0KliLmxUZXQKk8XHGyAN0g+OX5TpvJxQRhNzLTDH6uR8XPf1AX8SJe9jW5y1mrAlp8pc9z BnSGOV9KKYEaYm302fNaVRf647AxEEhgIs0sf5JKCCzP7h53RR3ckBASQ/udDY1rRtYoZkb5t c2LboNhEfewdYPNNrq2iF8FHXq1r+zx/UVnP8yaByF4cI4UwJS3FxZCFpOvdrCxD2xLKMAyPP dCcEqWiv1Kl9Zjk/J0ne42RJaXVfT7OsoGHUeW0MNPA7/o7F0l3XJROPOQmjsb9BDJIEbU5ZN qO+1VZ5AZGKKzYy032rE49UQognznSGlUXBG7wjAg40x/k2p++hdF9hYOojCd7VBIU9q2cPU1 7+n0k3nS7zRUuGSDS2JHzqN8z9AW6TzBjg/qz9d8xrHGdFcddbt8BnL5AOp1i/V1KpFhCvX X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 212.227.126.187 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: Riku Voipio , Alistair Francis , Laurent Vivier Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Alistair Francis New y2038 safe 32-bit architectures (like RISC-V) don't support old syscalls with a 32-bit time_t. The kernel defines new *_time64 versions of these syscalls. Add some more #ifdefs to syscall.c in linux-user to allow us to compile without these old syscalls. Signed-off-by: Alistair Francis Reviewed-by: Laurent Vivier Message-Id: <9ffc3cc6226756895157f16622be5f6edfa2aee6.1584051142.git.alistair.francis@wdc.com> [lv: guard copy_to_user_timezone() with TARGET_NR_gettimeofday] Signed-off-by: Laurent Vivier --- linux-user/strace.c | 2 ++ linux-user/syscall.c | 70 ++++++++++++++++++++++++++++++++++++++++++-- 2 files changed, 70 insertions(+), 2 deletions(-) diff --git a/linux-user/strace.c b/linux-user/strace.c index 69232f7e27b8..0d9095c674f4 100644 --- a/linux-user/strace.c +++ b/linux-user/strace.c @@ -781,6 +781,7 @@ print_syscall_ret_newselect(const struct syscallname *name, abi_long ret) #define TARGET_TIME_OOP 3 /* leap second in progress */ #define TARGET_TIME_WAIT 4 /* leap second has occurred */ #define TARGET_TIME_ERROR 5 /* clock not synchronized */ +#ifdef TARGET_NR_adjtimex static void print_syscall_ret_adjtimex(const struct syscallname *name, abi_long ret) { @@ -819,6 +820,7 @@ print_syscall_ret_adjtimex(const struct syscallname *name, abi_long ret) qemu_log("\n"); } +#endif UNUSED static struct flags access_flags[] = { FLAG_GENERIC(F_OK), diff --git a/linux-user/syscall.c b/linux-user/syscall.c index be676c3a4fb4..ea1c84dc5de5 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -742,21 +742,30 @@ safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count) safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count) safe_syscall4(int, openat, int, dirfd, const char *, pathname, \ int, flags, mode_t, mode) +#if defined(TARGET_NR_wait4) || defined(TARGET_NR_waitpid) safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \ struct rusage *, rusage) +#endif 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) 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) safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds, struct timespec *, tsp, const sigset_t *, sigmask, size_t, sigsetsize) +#endif safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events, int, maxevents, int, timeout, const sigset_t *, sigmask, size_t, sigsetsize) +#ifdef TARGET_NR_futex safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \ const struct timespec *,timeout,int *,uaddr2,int,val3) +#endif safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize) safe_syscall2(int, kill, pid_t, pid, int, sig) safe_syscall2(int, tkill, int, tid, int, sig) @@ -776,12 +785,16 @@ safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len, safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags) safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags) safe_syscall2(int, flock, int, fd, int, operation) +#ifdef TARGET_NR_rt_sigtimedwait safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo, const struct timespec *, uts, size_t, sigsetsize) +#endif safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len, int, flags) +#if defined(TARGET_NR_nanosleep) safe_syscall2(int, nanosleep, const struct timespec *, req, struct timespec *, rem) +#endif #ifdef TARGET_NR_clock_nanosleep safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags, const struct timespec *, req, struct timespec *, rem) @@ -802,9 +815,11 @@ safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz, safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops, unsigned, nsops, const struct timespec *, timeout) #endif -#if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) +#ifdef TARGET_NR_mq_timedsend safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr, size_t, len, unsigned, prio, const struct timespec *, timeout) +#endif +#ifdef TARGET_NR_mq_timedreceive safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr, size_t, len, unsigned *, prio, const struct timespec *, timeout) #endif @@ -946,6 +961,8 @@ abi_long do_brk(abi_ulong new_brk) return target_brk; } +#if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \ + defined(TARGET_NR_pselect6) static inline abi_long copy_from_user_fdset(fd_set *fds, abi_ulong target_fds_addr, int n) @@ -1021,6 +1038,7 @@ static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr, return 0; } +#endif #if defined(__alpha__) #define HOST_HZ 1024 @@ -1067,6 +1085,7 @@ static inline abi_long host_to_target_rusage(abi_ulong target_addr, return 0; } +#ifdef TARGET_NR_setrlimit static inline rlim_t target_to_host_rlim(abi_ulong target_rlim) { abi_ulong target_rlim_swap; @@ -1082,7 +1101,9 @@ static inline rlim_t target_to_host_rlim(abi_ulong target_rlim) return result; } +#endif +#if defined(TARGET_NR_getrlimit) || defined(TARGET_NR_ugetrlimit) static inline abi_ulong host_to_target_rlim(rlim_t rlim) { abi_ulong target_rlim_swap; @@ -1096,6 +1117,7 @@ static inline abi_ulong host_to_target_rlim(rlim_t rlim) return result; } +#endif static inline int target_to_host_resource(int code) { @@ -1186,6 +1208,12 @@ static inline abi_long copy_to_user_timeval64(abi_ulong target_tv_addr, return 0; } +#if defined(TARGET_NR_futex) || \ + defined(TARGET_NR_rt_sigtimedwait) || \ + defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6) || \ + defined(TARGET_NR_nanosleep) || defined(TARGET_NR_clock_settime) || \ + defined(TARGET_NR_utimensat) || defined(TARGET_NR_mq_timedsend) || \ + defined(TARGET_NR_mq_timedreceive) static inline abi_long target_to_host_timespec(struct timespec *host_ts, abi_ulong target_addr) { @@ -1199,6 +1227,7 @@ static inline abi_long target_to_host_timespec(struct timespec *host_ts, 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) @@ -1228,6 +1257,7 @@ static inline abi_long host_to_target_timespec64(abi_ulong target_addr, return 0; } +#if defined(TARGET_NR_gettimeofday) static inline abi_long copy_to_user_timezone(abi_ulong target_tz_addr, struct timezone *tz) { @@ -1244,7 +1274,9 @@ static inline abi_long copy_to_user_timezone(abi_ulong target_tz_addr, return 0; } +#endif +#if defined(TARGET_NR_settimeofday) static inline abi_long copy_from_user_timezone(struct timezone *tz, abi_ulong target_tz_addr) { @@ -1261,6 +1293,7 @@ static inline abi_long copy_from_user_timezone(struct timezone *tz, return 0; } +#endif #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) #include @@ -6582,6 +6615,8 @@ static inline abi_long target_ftruncate64(void *cpu_env, abi_long arg1, } #endif +#if defined(TARGET_NR_timer_settime) || \ + (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)) static inline abi_long target_to_host_itimerspec(struct itimerspec *host_itspec, abi_ulong target_addr) { @@ -6601,7 +6636,11 @@ static inline abi_long target_to_host_itimerspec(struct itimerspec *host_itspec, unlock_user_struct(target_itspec, target_addr, 1); return 0; } +#endif +#if ((defined(TARGET_NR_timerfd_gettime) || \ + defined(TARGET_NR_timerfd_settime)) && defined(CONFIG_TIMERFD)) || \ + defined(TARGET_NR_timer_gettime) || defined(TARGET_NR_timer_settime) static inline abi_long host_to_target_itimerspec(abi_ulong target_addr, struct itimerspec *host_its) { @@ -6620,7 +6659,10 @@ static inline abi_long host_to_target_itimerspec(abi_ulong target_addr, unlock_user_struct(target_itspec, target_addr, 0); return 0; } +#endif +#if defined(TARGET_NR_adjtimex) || \ + (defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)) static inline abi_long target_to_host_timex(struct timex *host_tx, abi_long target_addr) { @@ -6690,7 +6732,7 @@ static inline abi_long host_to_target_timex(abi_long target_addr, unlock_user_struct(target_tx, target_addr, 1); return 0; } - +#endif static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp, abi_ulong target_addr) @@ -6857,6 +6899,7 @@ static inline abi_long host_to_target_statx(struct target_statx *host_stx, futexes locally would make futexes shared between multiple processes tricky. However they're probably useless because guest atomic operations won't work either. */ +#if defined(TARGET_NR_futex) static int do_futex(target_ulong uaddr, int op, int val, target_ulong timeout, target_ulong uaddr2, int val3) { @@ -6903,6 +6946,7 @@ static int do_futex(target_ulong uaddr, int op, int val, target_ulong timeout, return -TARGET_ENOSYS; } } +#endif #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname, abi_long handle, abi_long mount_id, @@ -8521,6 +8565,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, } } return ret; +#ifdef TARGET_NR_rt_sigtimedwait case TARGET_NR_rt_sigtimedwait: { sigset_t set; @@ -8557,6 +8602,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, } } return ret; +#endif case TARGET_NR_rt_sigqueueinfo: { siginfo_t uinfo; @@ -8656,6 +8702,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, } } return ret; +#if defined(TARGET_NR_gettimeofday) case TARGET_NR_gettimeofday: { struct timeval tv; @@ -8672,6 +8719,8 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, } } return ret; +#endif +#if defined(TARGET_NR_settimeofday) case TARGET_NR_settimeofday: { struct timeval tv, *ptv = NULL; @@ -8693,6 +8742,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, return get_errno(settimeofday(ptv, ptz)); } +#endif #if defined(TARGET_NR_select) case TARGET_NR_select: #if defined(TARGET_WANT_NI_OLD_SELECT) @@ -9164,6 +9214,8 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, #ifdef TARGET_NR_sendmmsg case TARGET_NR_sendmmsg: return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1); +#endif +#ifdef TARGET_NR_recvmmsg case TARGET_NR_recvmmsg: return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0); #endif @@ -9338,6 +9390,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5, arg6, arg7, arg8, 0); #endif +#if defined(TARGET_NR_wait4) case TARGET_NR_wait4: { int status; @@ -9365,6 +9418,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, } } return ret; +#endif #ifdef TARGET_NR_swapoff case TARGET_NR_swapoff: if (!(p = lock_user_string(arg1))) @@ -9509,6 +9563,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, return do_vm86(cpu_env, arg1, arg2); #endif #endif +#if defined(TARGET_NR_adjtimex) case TARGET_NR_adjtimex: { struct timex host_buf; @@ -9524,6 +9579,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, } } return ret; +#endif #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME) case TARGET_NR_clock_adjtime: { @@ -10040,6 +10096,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, return get_errno(sched_get_priority_max(arg1)); case TARGET_NR_sched_get_priority_min: return get_errno(sched_get_priority_min(arg1)); +#ifdef TARGET_NR_sched_rr_get_interval case TARGET_NR_sched_rr_get_interval: { struct timespec ts; @@ -10049,6 +10106,8 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, } } return ret; +#endif +#if defined(TARGET_NR_nanosleep) case TARGET_NR_nanosleep: { struct timespec req, rem; @@ -10059,6 +10118,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, } } return ret; +#endif case TARGET_NR_prctl: switch (arg1) { case PR_GET_PDEATHSIG: @@ -11529,8 +11589,10 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, } return ret; #endif +#ifdef TARGET_NR_futex case TARGET_NR_futex: return do_futex(arg1, arg2, arg3, arg4, arg5, arg6); +#endif #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init) case TARGET_NR_inotify_init: ret = get_errno(sys_inotify_init()); @@ -11595,6 +11657,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, unlock_user (p, arg1, 0); return ret; +#ifdef TARGET_NR_mq_timedsend case TARGET_NR_mq_timedsend: { struct timespec ts; @@ -11610,7 +11673,9 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, unlock_user (p, arg2, arg3); } return ret; +#endif +#ifdef TARGET_NR_mq_timedreceive case TARGET_NR_mq_timedreceive: { struct timespec ts; @@ -11631,6 +11696,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, put_user_u32(prio, arg4); } return ret; +#endif /* Not implemented for now... */ /* case TARGET_NR_mq_notify: */