io.h - 9base - revived minimalist port of Plan 9 userland to Unix
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       io.h (646B)
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            1 /*
            2  * on Mac OS X, err is something else,
            3  * and assigning to it causes a bus error.
            4  * what a crappy linker.
            5  */
            6 #define err rc_err
            7 #define        EOF        (-1)
            8 #define        NBUF        512
            9 struct io{
           10         int fd;
           11         char *bufp, *ebuf, *strp, buf[NBUF];
           12 };
           13 io *err;
           14 io *openfd(int), *openstr(void), *opencore(char *, int);
           15 int emptybuf(io*);
           16 void pchr(io*, int);
           17 int rchr(io*);
           18 void closeio(io*);
           19 void flush(io*);
           20 int fullbuf(io*, int);
           21 void pdec(io*, int);
           22 void poct(io*, unsigned);
           23 void pptr(io*, void*);
           24 void pquo(io*, char*);
           25 void pwrd(io*, char*);
           26 void pstr(io*, char*);
           27 void pcmd(io*, tree*);
           28 void pval(io*, word*);
           29 void pfnc(io*, thread*);
           30 void pfmt(io*, char*, ...);