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#include <sys/types.h>
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#include <sys/limits.h>
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#include <fcntl.h>
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#include <ureg.h>
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typedef struct Ureg Ureg;
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/* mux buf for selecting (see _buf.c) */
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enum {
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READMAX = 8192, /* read at most this much with _READ */
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PERFDMAX = 2*READMAX, /* stop _READing an fd when it has this much */
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INITBUFS = 4, /* allow enough room for this many PERFDMAX */
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};
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typedef struct Muxbuf {
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int n; /* # unprocessed chars in buf */
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unsigned char* putnext; /* place for copy process to put next data */
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unsigned char* getnext; /* place for parent process to get next data */
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char fd; /* fd for which this is a buffer */
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unsigned char eof; /* true if eof after current data exhausted */
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unsigned char roomwait; /* true if copy process is waiting for room */
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unsigned char datawait; /* true if parent process is waiting for data */
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int copypid; /* pid of copyproc */
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unsigned char data[PERFDMAX];
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} Muxbuf;
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/* be sure to change _fdinfo[] init in _fdinfo if you change this */
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typedef struct Fdinfo{
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unsigned long flags;
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unsigned long oflags;
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uid_t uid;
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gid_t gid;
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char *name;
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/*
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* the following is used if flags&FD_BUFFERED
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*/
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Muxbuf *buf; /* holds buffered data and state */
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} Fdinfo;
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/* #define FD_CLOEXEC 1 is in fcntl.h */
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#define FD_ISOPEN 0x2
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#define FD_BUFFERED 0x4
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#define FD_BUFFEREDX 0x8
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#define FD_ISTTY 0x20
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#define MAXSIG SIGUSR2
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extern Fdinfo _fdinfo[];
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extern int _finishing;
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extern int _sessleader;
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extern void (*_sighdlr[])(int, char*, Ureg*);
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extern char *_sigstring(int);
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extern int _stringsig(char *);
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extern long _psigblocked;
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extern int _startbuf(int);
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extern int _selbuf(int);
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extern void _closebuf(int);
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extern int _readbuf(int, void*, int, int);
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extern void _detachbuf(void);
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extern void _finish(int, char *);
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extern char *_ultoa(char *, unsigned long);
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extern int _notehandler(void *, char *);
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extern void _notetramp(int, void (*)(int, char*, Ureg*), Ureg*);
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extern void _syserrno(void);
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extern int _getpw(int *, char **, char **);
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extern int _isatty(int);
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extern void _fdinit(char*, char*);
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void checkbug(char *, int);
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