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