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linux(4): Implement clock_getres_time64 system call.

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MFC after:	2 weeks
This commit is contained in:
Dmitry Chagin 2021-06-07 05:21:32 +03:00
parent a3c2c06bc9
commit 187715a420
5 changed files with 77 additions and 29 deletions
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1
sys/amd64/linux32/linux32_dummy_machdep.c
View File

@ -68,7 +68,6 @@ DUMMY(mq_getsetattr);
DUMMY(arch_prctl);
/* Linux 5.0: */
DUMMY(clock_adjtime64);
DUMMY(clock_getres_time64);
DUMMY(clock_nanosleep_time64);
DUMMY(timer_gettime64);
DUMMY(timer_settime64);

5
sys/amd64/linux32/syscalls.master
View File

@ -2356,7 +2356,10 @@
int linux_clock_adjtime64(void);
}
406 AUE_NULL STD {
int linux_clock_getres_time64(void);
int linux_clock_getres_time64(
clockid_t which,
struct l_timespec64 *tp
);
}
407 AUE_NULL STD {
int linux_clock_nanosleep_time64(void);

94
sys/compat/linux/linux_time.c
View File

@ -94,10 +94,13 @@ LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, copyin_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime64, conversion_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime64, copyin_error, "int");
#endif
LIN_SDT_PROBE_DEFINE0(time, linux_clock_getres, nullcall);
LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, conversion_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, getres_error, "int");
LIN_SDT_PROBE_DEFINE0(time, linux_common_clock_getres, nullcall);
LIN_SDT_PROBE_DEFINE1(time, linux_common_clock_getres, conversion_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_common_clock_getres, getres_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, copyout_error, "int");
#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres_time64, copyout_error, "int");
#endif
LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, conversion_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, copyout_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, copyin_error, "int");
@ -111,6 +114,8 @@ static int linux_common_clock_gettime(struct thread *, clockid_t,
struct timespec *);
static int linux_common_clock_settime(struct thread *, clockid_t,
struct timespec *);
static int linux_common_clock_getres(struct thread *, clockid_t,
struct timespec *);
int
native_to_linux_timespec(struct l_timespec *ltp, struct timespec *ntp)
@ -486,23 +491,22 @@ linux_clock_settime64(struct thread *td, struct linux_clock_settime64_args *args
}
#endif
int
linux_clock_getres(struct thread *td, struct linux_clock_getres_args *args)
static int
linux_common_clock_getres(struct thread *td, clockid_t which,
struct timespec *ts)
{
struct proc *p;
struct timespec ts;
struct l_timespec lts;
int error, clockwhich;
clockid_t nwhich;
pid_t pid;
lwpid_t tid;
error = linux_to_native_clockid(&nwhich, args->which);
error = linux_to_native_clockid(&nwhich, which);
if (error != 0) {
linux_msg(curthread,
"unsupported clock_getres clockid %d", args->which);
LIN_SDT_PROBE1(time, linux_clock_getres, conversion_error,
error);
"unsupported clock_getres clockid %d", which);
LIN_SDT_PROBE1(time, linux_common_clock_getres,
conversion_error, error);
return (error);
}
@ -510,10 +514,10 @@ linux_clock_getres(struct thread *td, struct linux_clock_getres_args *args)
* Check user supplied clock id in case of per-process
* or thread-specific cpu-time clock.
*/
if (args->which < 0) {
if (which < 0) {
switch (nwhich) {
case CLOCK_THREAD_CPUTIME_ID:
tid = LINUX_CPUCLOCK_ID(args->which);
tid = LINUX_CPUCLOCK_ID(which);
if (tid != 0) {
p = td->td_proc;
if (linux_tdfind(td, tid, p->p_pid) == NULL)
@ -522,7 +526,7 @@ linux_clock_getres(struct thread *td, struct linux_clock_getres_args *args)
}
break;
case CLOCK_PROCESS_CPUTIME_ID:
pid = LINUX_CPUCLOCK_ID(args->which);
pid = LINUX_CPUCLOCK_ID(which);
if (pid != 0) {
error = pget(pid, PGET_CANSEE, &p);
if (error != 0)
@ -533,15 +537,15 @@ linux_clock_getres(struct thread *td, struct linux_clock_getres_args *args)
}
}
if (args->tp == NULL) {
LIN_SDT_PROBE0(time, linux_clock_getres, nullcall);
if (ts == NULL) {
LIN_SDT_PROBE0(time, linux_common_clock_getres, nullcall);
return (0);
}
switch (nwhich) {
case CLOCK_THREAD_CPUTIME_ID:
case CLOCK_PROCESS_CPUTIME_ID:
clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
clockwhich = LINUX_CPUCLOCK_WHICH(which);
/*
* In both cases (when the clock id obtained by a call to
* clock_getcpuclockid() or using the clock
@ -550,9 +554,9 @@ linux_clock_getres(struct thread *td, struct linux_clock_getres_args *args)
*
* See Linux posix_cpu_clock_getres() implementation.
*/
if (args->which > 0 || clockwhich == LINUX_CPUCLOCK_SCHED) {
ts.tv_sec = 0;
ts.tv_nsec = 1;
if (which > 0 || clockwhich == LINUX_CPUCLOCK_SCHED) {
ts->tv_sec = 0;
ts->tv_nsec = 1;
goto out;
}
@ -571,23 +575,63 @@ linux_clock_getres(struct thread *td, struct linux_clock_getres_args *args)
default:
break;
}
error = kern_clock_getres(td, nwhich, &ts);
error = kern_clock_getres(td, nwhich, ts);
if (error != 0) {
LIN_SDT_PROBE1(time, linux_clock_getres, getres_error, error);
LIN_SDT_PROBE1(time, linux_common_clock_getres,
getres_error, error);
return (error);
}
out:
return (error);
}
int
linux_clock_getres(struct thread *td,
struct linux_clock_getres_args *args)
{
struct timespec ts;
struct l_timespec lts;
int error;
error = linux_common_clock_getres(td, args->which, &ts);
if (error != 0 || args->tp == NULL)
return (error);
error = native_to_linux_timespec(&lts, &ts);
if (error != 0)
return (error);
error = copyout(&lts, args->tp, sizeof lts);
error = copyout(&lts, args->tp, sizeof(lts));
if (error != 0)
LIN_SDT_PROBE1(time, linux_clock_getres, copyout_error, error);
LIN_SDT_PROBE1(time, linux_clock_getres,
copyout_error, error);
return (error);
}
#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
int
linux_clock_getres_time64(struct thread *td,
struct linux_clock_getres_time64_args *args)
{
struct timespec ts;
struct l_timespec64 lts;
int error;
error = linux_common_clock_getres(td, args->which, &ts);
if (error != 0 || args->tp == NULL)
return (error);
error = native_to_linux_timespec64(&lts, &ts);
if (error != 0)
return (error);
error = copyout(&lts, args->tp, sizeof(lts));
if (error != 0)
LIN_SDT_PROBE1(time, linux_clock_getres_time64,
copyout_error, error);
return (error);
}
#endif
int
linux_nanosleep(struct thread *td, struct linux_nanosleep_args *args)
{

1
sys/i386/linux/linux_dummy_machdep.c
View File

@ -70,7 +70,6 @@ DUMMY(vm86old);
DUMMY(arch_prctl);
/* Linux 5.0: */
DUMMY(clock_adjtime64);
DUMMY(clock_getres_time64);
DUMMY(clock_nanosleep_time64);
DUMMY(timer_gettime64);
DUMMY(timer_settime64);

5
sys/i386/linux/syscalls.master
View File

@ -2374,7 +2374,10 @@
int linux_clock_adjtime64(void);
}
406 AUE_NULL STD {
int linux_clock_getres_time64(void);
int linux_clock_getres_time64(
clockid_t which,
struct l_timespec64 *tp
);
}
407 AUE_NULL STD {
int linux_clock_nanosleep_time64(void);