src/s/ptx4.h

   1 /* s/ file for Sequent "ptx 4", which is a modified SVR5.4.  */
   2
   3 /* Tell usg5-4.h not to include filio.h.  */
   4 #define NO_FILIO_H
   5
   6 #include "usg5-4.h"
   7
   8 /* Marcus Daniels <marcus@sysc.pdx.edu> says that SIGINFO is defined
   9    on ptx4 but it is not a signal.  Prevent process.c from doing the
  10    wrong thing.  */
  11 #define BROKEN_SIGINFO
  12
  13 /* pae@dim.com (Phil Ernhardt) says this correction to
  14    the definition in usg5-4.h is needed to prevent
  15    all asynchronous subprocesses from exiting right away.  */
  16
  17 /* James Youngman <jay@gnu.org> found that on "DYNIX/ptx ARNIE 4.0
  18  * V4.4.2 i386", the push of the ttcompat module would fail.  It seems
  19  * that PTX 4.4.2 doesn't have that module, so if the push fails we
  20  * don't kill ourselves.  While this version lacks ttcompat, it also
  21  * has ptem, but the manual page for ptem indicates that it should
  22  * be pushed onto the slave side before the line discipline module.
  23  * See also the streampty manual page, if you're curious (and have
  24  * a ptx system).
  25  */
  26
  27 /* rms: I hope that older versions which do have ttcompat
  28    will not get confused by the code to use ptem.  */
  29
  30 #undef SETUP_SLAVE_PTY
  31 #define SETUP_SLAVE_PTY \
  32   if (ioctl (xforkin, I_PUSH, "ptem") == -1 && errno != EINVAL) \
  33     fatal ("ioctl I_PUSH ptem", errno);     \
  34   if (ioctl (xforkin, I_PUSH, "ldterm") == -1)  \
  35     fatal ("ioctl I_PUSH ldterm", errno);       \
  36   if (ioctl (xforkin, I_PUSH, "ttcompat") == -1 && errno != EINVAL) \
  37     fatal ("ioctl I_PUSH ttcompat", errno);