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Cygwin: timerfd/signalfd: return EINVAL from write 

Linux returns EINVAL, "fd is attached to an object which is unsuitable
for writing".  If we don't handle write locally, write returns EBADF.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2019-01-17 11:51:11 +01:00
parent 173e067a31
commit 7f983079d4
3 changed files with 21 additions and 6 deletions
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2
winsup/cygwin/fhandler.h
View File

@ -2650,6 +2650,7 @@ class fhandler_signalfd : public fhandler_base
int signalfd (const sigset_t *mask, int flags);
int __reg2 fstat (struct stat *buf);
void __reg3 read (void *ptr, size_t& len);
ssize_t __stdcall write (const void *, size_t);
int poll ();
inline sigset_t get_sigset () const { return sigset; }
@ -2693,6 +2694,7 @@ class fhandler_timerfd : public fhandler_base
int __reg2 fstat (struct stat *buf);
void __reg3 read (void *ptr, size_t& len);
ssize_t __stdcall write (const void *, size_t);
int dup (fhandler_base *child, int);
int ioctl (unsigned int, void *);
int close ();

8
winsup/cygwin/fhandler_signalfd.cc
View File

@ -49,6 +49,7 @@ fhandler_signalfd::signalfd (const sigset_t *mask, int flags)
nohandle (true);
set_unique_id ();
set_ino (get_unique_id ());
set_flags (O_RDWR | O_BINARY);
}
return 0;
}
@ -139,6 +140,13 @@ fhandler_signalfd::read (void *ptr, size_t& len)
return;
}
ssize_t __stdcall
fhandler_signalfd::write (const void *, size_t)
{
set_errno (EINVAL);
return -1;
}
/* Called from select */
int
fhandler_signalfd::poll ()

17
winsup/cygwin/fhandler_timerfd.cc
View File

@ -44,12 +44,10 @@ fhandler_timerfd::timerfd (clockid_t clock_id, int flags)
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 ());
}
nohandle (true);
set_unique_id ();
set_ino (get_unique_id ());
set_flags (O_RDWR | O_BINARY);
return 0;
}
@ -125,6 +123,13 @@ fhandler_timerfd::read (void *ptr, size_t& len)
return;
}
ssize_t __stdcall
fhandler_timerfd::write (const void *, size_t)
{
set_errno (EINVAL);
return -1;
}
HANDLE
fhandler_timerfd::get_timerfd_handle ()
{