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      1 /*	$NetBSD: iostuff.h,v 1.2 2017/02/14 01:16:49 christos Exp $	*/
      2 
      3 #ifndef _IOSTUFF_H_INCLUDED_
      4 #define _IOSTUFF_H_INCLUDED_
      5 
      6 /*++
      7 /* NAME
      8 /*	iostuff 3h
      9 /* SUMMARY
     10 /*	miscellaneous I/O primitives
     11 /* SYNOPSIS
     12 /*	#include <iostuff.h>
     13 /* DESCRIPTION
     14 
     15  /*
     16   * External interface.
     17   */
     18 extern int non_blocking(int, int);
     19 extern int close_on_exec(int, int);
     20 extern int open_limit(int);
     21 extern int poll_fd(int, int, int, int, int);
     22 extern off_t get_file_limit(void);
     23 extern void set_file_limit(off_t);
     24 extern ssize_t peekfd(int);
     25 extern ssize_t write_buf(int, const char *, ssize_t, int);
     26 extern ssize_t timed_read(int, void *, size_t, int, void *);
     27 extern ssize_t timed_write(int, const void *, size_t, int, void *);
     28 extern void doze(unsigned);
     29 extern void rand_sleep(unsigned, unsigned);
     30 extern int duplex_pipe(int *);
     31 extern int stream_recv_fd(int);
     32 extern int stream_send_fd(int, int);
     33 extern int unix_recv_fd(int);
     34 extern int unix_send_fd(int, int);
     35 extern ssize_t dummy_read(int, void *, size_t, int, void *);
     36 extern ssize_t dummy_write(int, void *, size_t, int, void *);
     37 
     38 #define readable(fd)		poll_fd((fd), POLL_FD_READ, 0, 1, 0)
     39 #define writable(fd)		poll_fd((fd), POLL_FD_WRITE, 0, 1, 0)
     40 
     41 #define read_wait(fd, timeout) poll_fd((fd), POLL_FD_READ, (timeout), 0, -1)
     42 #define write_wait(fd, timeout) poll_fd((fd), POLL_FD_WRITE, (timeout), 0, -1)
     43 
     44 extern int inet_windowsize;
     45 extern void set_inet_windowsize(int, int);
     46 
     47 #define POLL_FD_READ	0
     48 #define POLL_FD_WRITE	1
     49 
     50 #define BLOCKING	0
     51 #define NON_BLOCKING	1
     52 
     53 #define CLOSE_ON_EXEC	1
     54 #define PASS_ON_EXEC	0
     55 
     56 extern int unix_pass_fd_fix;
     57 extern void set_unix_pass_fd_fix(const char *);
     58 
     59 #define UNIX_PASS_FD_FIX_NONE		(0)
     60 #define UNIX_PASS_FD_FIX_CMSG_LEN	(1<<0)
     61 
     62 /* LICENSE
     63 /* .ad
     64 /* .fi
     65 /*	The Secure Mailer license must be distributed with this software.
     66 /* AUTHOR(S)
     67 /*	Wietse Venema
     68 /*	IBM T.J. Watson Research
     69 /*	P.O. Box 704
     70 /*	Yorktown Heights, NY 10598, USA
     71 /* CREATION DATE
     72 /*	Sat Jan 25 16:54:13 EST 1997
     73 /*--*/
     74 
     75 #endif
     76