ref: dfb4b522830edab8f3856289d326d6cf5e930644
dir: /sys/src/ape/lib/ap/plan9/lib.h/
#include <sys/types.h> #include <sys/limits.h> #include <fcntl.h> #include <ureg.h> typedef struct Ureg Ureg; /* mux buf for selecting (see _buf.c) */ enum { READMAX = 8192, /* read at most this much with _READ */ PERFDMAX = 2*READMAX, /* stop _READing an fd when it has this much */ INITBUFS = 4, /* allow enough room for this many PERFDMAX */ }; typedef struct Muxbuf { int n; /* # unprocessed chars in buf */ unsigned char* putnext; /* place for copy process to put next data */ unsigned char* getnext; /* place for parent process to get next data */ char fd; /* fd for which this is a buffer */ unsigned char eof; /* true if eof after current data exhausted */ unsigned char roomwait; /* true if copy process is waiting for room */ unsigned char datawait; /* true if parent process is waiting for data */ int copypid; /* pid of copyproc */ unsigned char data[PERFDMAX]; } Muxbuf; /* be sure to change _fdinfo[] init in _fdinfo if you change this */ typedef struct Fdinfo{ unsigned long flags; unsigned long oflags; uid_t uid; gid_t gid; char *name; /* * the following is used if flags&FD_BUFFERED */ Muxbuf *buf; /* holds buffered data and state */ } Fdinfo; /* #define FD_CLOEXEC 1 is in fcntl.h */ #define FD_ISOPEN 0x2 #define FD_BUFFERED 0x4 #define FD_BUFFEREDX 0x8 #define FD_ISTTY 0x20 #define MAXSIG SIGPROF extern Fdinfo _fdinfo[]; extern int _finishing; extern int _sessleader; extern void (*_sighdlr[])(int, char*, Ureg*); extern char *_sigstring(int); extern int _stringsig(char *); extern long _psigblocked; extern int _startbuf(int); extern int _selbuf(int); extern void _closebuf(int); extern int _readbuf(int, void*, int, int); extern void _detachbuf(void); extern void _finish(int, char *); extern char *_ultoa(char *, unsigned long); extern int _notehandler(void *, char *); extern void _notetramp(int, void (*)(int, char*, Ureg*), Ureg*); extern void _syserrno(void); extern int _getpw(int *, char **, char **); extern int _isatty(int); extern void _fdinit(char*, char*); void checkbug(char *, int);