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author | Filip Bozuta <Filip.Bozuta@syrmia.com> | 2020-08-24 21:21:16 +0200 |
---|---|---|
committer | Laurent Vivier <laurent@vivier.eu> | 2020-08-28 15:24:42 +0200 |
commit | ddcbde157d66f7ee53d9789cf605ebaa4be0745e (patch) | |
tree | e55c83a906887d18986b01246bc94f4d7b7f015d | |
parent | 6ac03b2cacbadbaf631ca16582f0e9b716653a32 (diff) |
linux-user: Add support for 'rt_sigtimedwait_time64()' and 'sched_rr_get_interval_time64()'
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>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200824192116.65562-3-Filip.Bozuta@syrmia.com>
[lv: add missing defined(TARGET_NR_rt_sigtimedwait_time64)]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
-rw-r--r-- | linux-user/syscall.c | 58 |
1 files changed, 56 insertions, 2 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 6fd3099cd6..188363f72e 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -764,7 +764,7 @@ 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 +#if defined(TARGET_NR_rt_sigtimedwait) || defined(TARGET_NR_rt_sigtimedwait_time64) safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo, const struct timespec *, uts, size_t, sigsetsize) #endif @@ -1243,7 +1243,8 @@ static inline abi_long target_to_host_timespec(struct timespec *host_ts, defined(TARGET_NR_mq_timedsend_time64) || \ defined(TARGET_NR_mq_timedreceive_time64) || \ (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) || \ - defined(TARGET_NR_clock_nanosleep_time64) + defined(TARGET_NR_clock_nanosleep_time64) || \ + defined(TARGET_NR_rt_sigtimedwait_time64) static inline abi_long target_to_host_timespec64(struct timespec *host_ts, abi_ulong target_addr) { @@ -9045,6 +9046,48 @@ 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: { siginfo_t uinfo; @@ -10568,6 +10611,17 @@ 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: { |