[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PATCH v2 2/2] linux-user: Add support for 'rt_sigtimedwait_time64()
From: |
Laurent Vivier |
Subject: |
Re: [PATCH v2 2/2] linux-user: Add support for 'rt_sigtimedwait_time64()' and 'sched_rr_get_interval_time64()' |
Date: |
Mon, 24 Aug 2020 18:43:25 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 |
Le 27/07/2020 à 13:23, Filip Bozuta a écrit :
> This patch implements functionality for following time64 syscalls:
>
> *rt_sigtimedwait_time64()
>
> This is a year 2038 safe variant of syscall:
>
> int rt_sigtimedwait(const sigset_t *set, siginfo_t *info,
> const struct timespec *timeout, size_t sigsetsize)
> --synchronously wait for queued signals--
> man page: https://man7.org/linux/man-pages/man2/rt_sigtimedwait.2.html
>
> *sched_rr_get_interval_time64()
>
> This is a year 2038 safe variant of syscall:
>
> int sched_rr_get_interval(pid_t pid, struct timespec *tp)
> --get the SCHED_RR interval for the named process--
> man page:
> https://man7.org/linux/man-pages/man2/sched_rr_get_interval.2.html
>
> Implementation notes:
>
> These syscalls were implemented in similar ways like
> 'rt_sigtimedwait()' and 'sched_rr_get_interval()' except
> that functions 'target_to_host_timespec64()' and
> 'host_to_target_timespec64()' were used to convert values
> of 'struct timespec' between host and target.
>
> Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
> ---
> linux-user/syscall.c | 53 ++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 53 insertions(+)
>
> diff --git a/linux-user/syscall.c b/linux-user/syscall.c
> index c1b36ea698..35f6dded81 100644
> --- a/linux-user/syscall.c
> +++ b/linux-user/syscall.c
> @@ -8831,6 +8831,48 @@ static abi_long do_syscall1(void *cpu_env, int num,
> abi_long arg1,
> }
> }
> return ret;
> +#endif
> +#ifdef TARGET_NR_rt_sigtimedwait_time64
> + case TARGET_NR_rt_sigtimedwait_time64:
> + {
> + sigset_t set;
> + struct timespec uts, *puts;
> + siginfo_t uinfo;
> +
> + if (arg4 != sizeof(target_sigset_t)) {
> + return -TARGET_EINVAL;
> + }
> +
> + p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1);
> + if (!p) {
> + return -TARGET_EFAULT;
> + }
> + target_to_host_sigset(&set, p);
> + unlock_user(p, arg1, 0);
> + if (arg3) {
> + puts = &uts;
> + if (target_to_host_timespec64(puts, arg3)) {
> + return -TARGET_EFAULT;
> + }
> + } else {
> + puts = NULL;
> + }
> + ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts,
> + SIGSET_T_SIZE));
> + if (!is_error(ret)) {
> + if (arg2) {
> + p = lock_user(VERIFY_WRITE, arg2,
> + sizeof(target_siginfo_t), 0);
> + if (!p) {
> + return -TARGET_EFAULT;
> + }
> + host_to_target_siginfo(p, &uinfo);
> + unlock_user(p, arg2, sizeof(target_siginfo_t));
> + }
> + ret = host_to_target_signal(ret);
> + }
> + }
> + return ret;
> #endif
> case TARGET_NR_rt_sigqueueinfo:
> {
> @@ -10353,6 +10395,17 @@ static abi_long do_syscall1(void *cpu_env, int num,
> abi_long arg1,
> }
> return ret;
> #endif
> +#ifdef TARGET_NR_sched_rr_get_interval_time64
> + case TARGET_NR_sched_rr_get_interval_time64:
> + {
> + struct timespec ts;
> + ret = get_errno(sched_rr_get_interval(arg1, &ts));
> + if (!is_error(ret)) {
> + ret = host_to_target_timespec64(arg2, &ts);
> + }
> + }
> + return ret;
> +#endif
> #if defined(TARGET_NR_nanosleep)
> case TARGET_NR_nanosleep:
> {
>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- Re: [PATCH v2 2/2] linux-user: Add support for 'rt_sigtimedwait_time64()' and 'sched_rr_get_interval_time64()',
Laurent Vivier <=