iostuff.h

[詳解]

#ifndef _IOSTUFF_H_INCLUDED_
#define _IOSTUFF_H_INCLUDED_

/*++
/* NAME
/*  iostuff 3h
/* SUMMARY
/*  miscellaneous I/O primitives
/* SYNOPSIS
/*  #include <iostuff.h>
/* DESCRIPTION

 /*
  * External interface.
  */
extern int non_blocking(int, int);
extern int close_on_exec(int, int);
extern int open_limit(int);
extern int poll_fd(int, int, int, int, int);
extern off_t get_file_limit(void);
extern void set_file_limit(off_t);
extern ssize_t peekfd(int);
extern ssize_t write_buf(int, const char *, ssize_t, int);
extern ssize_t timed_read(int, void *, size_t, int, void *);
extern ssize_t timed_write(int, const void *, size_t, int, void *);
extern void doze(unsigned);
extern void rand_sleep(unsigned, unsigned);
extern int duplex_pipe(int *);
extern int stream_recv_fd(int);
extern int stream_send_fd(int, int);
extern int unix_recv_fd(int);
extern int unix_send_fd(int, int);
extern ssize_t dummy_read(int, void *, size_t, int, void *);
extern ssize_t dummy_write(int, void *, size_t, int, void *);

#define readable(fd)        poll_fd((fd), POLL_FD_READ, 0, 1, 0)
#define writable(fd)        poll_fd((fd), POLL_FD_WRITE, 0, 1, 0)

#define read_wait(fd, timeout) poll_fd((fd), POLL_FD_READ, (timeout), 0, -1)
#define write_wait(fd, timeout) poll_fd((fd), POLL_FD_WRITE, (timeout), 0, -1)

extern int inet_windowsize;
extern void set_inet_windowsize(int, int);

#define POLL_FD_READ    0
#define POLL_FD_WRITE   1

#define BLOCKING    0
#define NON_BLOCKING    1

#define CLOSE_ON_EXEC   1
#define PASS_ON_EXEC    0

extern int unix_pass_fd_fix;
extern void set_unix_pass_fd_fix(const char *);

#define UNIX_PASS_FD_FIX_NONE       (0)
#define UNIX_PASS_FD_FIX_CMSG_LEN   (1<<0)

/* LICENSE
/* .ad
/* .fi
/*  The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/*  Wietse Venema
/*  IBM T.J. Watson Research
/*  P.O. Box 704
/*  Yorktown Heights, NY 10598, USA
/* CREATION DATE
/*  Sat Jan 25 16:54:13 EST 1997
/*--*/

#endif