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Hurd: mach: compliance fixes for nanosleep

This commit is contained in:
Pino Toscano 2012-05-10 14:53:21 -07:00 committed by Roland McGrath
parent 510bbf14b4
commit a4186cffbf
2 changed files with 47 additions and 26 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2012-05-10 Pino Toscano <toscano.pino@tiscali.it>
* sysdeps/mach/nanosleep.c: Return EINVAL for invalid values of
REQUESTED_TIME. Properly set the remaining time and return EINTR
if interrupted.
2012-05-10 Thomas Schwinge <thomas@schwinge.name>
* sysdeps/mach/hurd/Makefile ($(common-objpfx)linkobj/libc.so):

31
sysdeps/mach/nanosleep.c
View File

@ -1,5 +1,5 @@
/* nanosleep -- sleep for a period specified with a struct timespec
Copyright (C) 2002 Free Software Foundation, Inc.
Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -27,6 +27,15 @@ __nanosleep (const struct timespec *requested_time,
{
mach_port_t recv;
struct timeval before, after;
if (requested_time->tv_sec < 0
|| requested_time->tv_nsec < 0
|| requested_time->tv_nsec >= 1000000000)
{
errno = EINVAL;
return -1;
}
const mach_msg_timeout_t ms
= requested_time->tv_sec * 1000
+ (requested_time->tv_nsec + 999999) / 1000000;
@ -35,16 +44,22 @@ __nanosleep (const struct timespec *requested_time,
if (remaining && __gettimeofday (&before, NULL) < 0)
return -1;
(void) __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT,
error_t err = __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT,
0, 0, recv, ms, MACH_PORT_NULL);
__mach_port_destroy (mach_task_self (), recv);
if (remaining && __gettimeofday (&after, NULL) < 0)
return -1;
if (remaining)
if (err == EMACH_RCV_INTERRUPTED)
{
timersub (&after, &before, &after);
TIMEVAL_TO_TIMESPEC (&after, remaining);
if (remaining && __gettimeofday (&after, NULL) >= 0)
{
struct timeval req_time, elapsed, rem;
TIMESPEC_TO_TIMEVAL (&req_time, requested_time);
timersub (&after, &before, &elapsed);
timersub (&req_time, &elapsed, &rem);
TIMEVAL_TO_TIMESPEC (&rem, remaining);
}
errno = EINTR;
return -1;
}
return 0;