src/s/irix4-0.h

   1 #include "irix3-3.h"
   2
   3 #define USG5_3
   4
   5 /* Define HAVE_ALLOCA to say that the system provides a properly
   6    working alloca function and it should be used. */
   7 #define HAVE_ALLOCA
   8 #undef C_ALLOCA
   9 #define alloca __builtin_alloca
  10
  11 /* use K&R C */
  12 #ifndef __GNUC__
  13 #define C_SWITCH_MACHINE -cckr
  14 #endif
  15
  16 /* SGI has all the fancy wait stuff, but we can't include sys/wait.h
  17    because it defines BIG_ENDIAN and LITTLE_ENDIAN (ugh!.)  Instead
  18    we'll just define WNOHANG right here.
  19    (An implicit decl is good enough for wait3.)  */
  20
  21 #define WNOHANG         0x1
  22
  23 /* No need to use sprintf to get the tty name--we get that from _getpty.  */
  24 #define PTY_TTY_NAME_SPRINTF
  25 /* No need to get the pty name at all.  */
  26 #define PTY_NAME_SPRINTF
  27 #ifdef emacs
  28 char *_getpty();
  29 #endif
  30 /* We need only try once to open a pty.  */
  31 #define PTY_ITERATION
  32 /* Here is how to do it.  */
  33 /* It is necessary to prevent SIGCHLD signals within _getpty.
  34    So we block them. */
  35 #define PTY_OPEN                                                \
  36 {                                                               \
  37   int mask = sigblock (sigmask (SIGCHLD));                      \
  38   char *name = _getpty (&fd, O_RDWR | O_NDELAY, 0600, 0);       \
  39   sigsetmask(mask);                                             \
  40   if (name == 0)                                                \
  41     return -1;                                                  \
  42   if (fd < 0)                                                   \
  43     return -1;                                                  \
  44   if (fstat (fd, &stb) < 0)                                     \
  45     return -1;                                                  \
  46   strcpy (pty_name, name);                                      \
  47 }