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/* fhandler_timerfd.cc: fhandler for timerfd
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
#include "path.h"
#include "fhandler.h"
#include "pinfo.h"
#include "dtable.h"
#include "cygheap.h"
#include "timer.h"
#include <sys/timerfd.h>
#include <cygwin/signal.h>
fhandler_timerfd::fhandler_timerfd () :
fhandler_base ()
{
}
char *
fhandler_timerfd::get_proc_fd_name (char *buf)
{
return strcpy (buf, "anon_inode:[timerfd]");
}
int
fhandler_timerfd::timerfd (clockid_t clock_id, int flags)
{
timerid = (timer_t) new timer_tracker (clock_id, NULL, true);
if (flags & TFD_NONBLOCK)
set_nonblocking (true);
if (flags & TFD_CLOEXEC)
set_close_on_exec (true);
if (get_unique_id () == 0)
{
nohandle (true);
set_unique_id ();
set_ino (get_unique_id ());
}
return 0;
}
int
fhandler_timerfd::settime (int flags, const itimerspec *value,
itimerspec *ovalue)
{
int ret = -1;
__try
{
timer_tracker *tt = (timer_tracker *) timerid;
ret = tt->settime (flags, value, ovalue);
}
__except (EFAULT) {}
__endtry
return ret;
}
int
fhandler_timerfd::gettime (itimerspec *ovalue)
{
int ret = -1;
__try
{
timer_tracker *tt = (timer_tracker *) timerid;
tt->gettime (ovalue);
ret = 0;
}
__except (EFAULT) {}
__endtry
return ret;
}
int __reg2
fhandler_timerfd::fstat (struct stat *buf)
{
int ret = fhandler_base::fstat (buf);
if (!ret)
{
buf->st_mode = S_IRUSR | S_IWUSR;
buf->st_dev = FH_TIMERFD;
buf->st_ino = get_unique_id ();
}
return ret;
}
void __reg3
fhandler_timerfd::read (void *ptr, size_t& len)
{
if (len < sizeof (LONG64))
{
set_errno (EINVAL);
len = (size_t) -1;
return;
}
__try
{
timer_tracker *tt = (timer_tracker *) timerid;
LONG64 ret = tt->wait (is_nonblocking ());
if (ret == -1)
__leave;
PLONG64 pl64 = (PLONG64) ptr;
*pl64 = ret + 1;
len = sizeof (LONG64);
return;
}
__except (EFAULT) {}
__endtry
len = (size_t) -1;
return;
}
HANDLE
fhandler_timerfd::get_timerfd_handle ()
{
__try
{
timer_tracker *tt = (timer_tracker *) timerid;
return tt->get_timerfd_handle ();
}
__except (EFAULT) {}
__endtry
return NULL;
}
int
fhandler_timerfd::dup (fhandler_base *child, int flags)
{
int ret = fhandler_base::dup (child, flags);
if (!ret)
{
fhandler_timerfd *fhc = (fhandler_timerfd *) child;
__try
{
timer_tracker *tt = (timer_tracker *) fhc->timerid;
tt->increment_instances ();
ret = 0;
}
__except (EFAULT) {}
__endtry
}
return ret;
}
void
fhandler_timerfd::fixup_after_fork_exec (bool execing)
{
if (!execing)
{
/* TODO after fork */
}
else if (!close_on_exec ())
{
/* TODO after exec */
}
}
int
fhandler_timerfd::ioctl (unsigned int cmd, void *p)
{
int ret = -1;
switch (cmd)
{
case TFD_IOC_SET_TICKS:
/* TODO */
ret = 0;
break;
default:
set_errno (EINVAL);
break;
}
syscall_printf ("%d = ioctl_timerfd(%x, %p)", ret, cmd, p);
return ret;
}
int
fhandler_timerfd::close ()
{
int ret = -1;
__try
{
timer_tracker *tt = (timer_tracker *) timerid;
timer_tracker::close (tt);
ret = 0;
}
__except (EFAULT) {}
__endtry
return ret;
}
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