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Annotation of GNUtools/emacs/src/s-irix4-0.h, revision 1.1.1.1

1.1       root        1: #include "s-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: #define C_SWITCH_MACHINE -cckr
                     13: 
                     14: /* SGI has all the fancy wait stuff, but we can't include sys/wait.h
                     15:    because it defines BIG_ENDIAN and LITTLE_ENDIAN (ugh!.)  Instead
                     16:    we'll just define WNOHANG right here.
                     17:    (An implicit decl is good enough for wait3.)  */
                     18: 
                     19: #define WNOHANG                0x1
                     20: 
                     21: /* No need to use sprintf to get the tty name--we get that from _getpty.  */
                     22: #define PTY_TTY_NAME_SPRINTF
                     23: /* No need to get the pty name at all.  */
                     24: #define PTY_NAME_SPRINTF
                     25: #ifdef emacs
                     26: char *_get_pty();
                     27: #endif
                     28: /* We need only try once to open a pty.  */
                     29: #define PTY_ITERATION
                     30: /* Here is how to do it.  */
                     31: /* It is necessary to prevent SIGCHLD signals within _getpty.
                     32:    So we block them. */
                     33: #define PTY_OPEN                                               \
                     34: {                                                              \
                     35:   int mask = sigblock (sigmask (SIGCHLD));                     \
                     36:   char *name = _getpty (&fd, O_RDWR | O_NDELAY, 0600, 0);      \
                     37:   sigsetmask(mask);                                            \
                     38:   if (name == 0)                                               \
                     39:     return -1;                                                 \
                     40:   if (fd < 0)                                                  \
                     41:     return -1;                                                 \
                     42:   if (fstat (fd, &stb) < 0)                                    \
                     43:     return -1;                                                 \
                     44:   strcpy (pty_name, name);                                     \
                     45: }

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