зеркало из https://github.com/github/ruby.git
188 строки
4.7 KiB
C
188 строки
4.7 KiB
C
/************************************************
|
|
|
|
fcntl.c -
|
|
|
|
$Author$
|
|
created at: Mon Apr 7 18:53:05 JST 1997
|
|
|
|
Copyright (C) 1997-2001 Yukihiro Matsumoto
|
|
|
|
************************************************/
|
|
|
|
/************************************************
|
|
= NAME
|
|
|
|
fcntl - load the C fcntl.h defines
|
|
|
|
= SYNOPSIS
|
|
|
|
require "fcntl"
|
|
m = s.fcntl(Fcntl::F_GETFL, 0)
|
|
f.fcntl(Fcntl::F_SETFL, Fcntl::O_NONBLOCK|m)
|
|
|
|
= DESCRIPTION
|
|
|
|
This module is just a translation of the C <fcntl.h> file.
|
|
|
|
= NOTE
|
|
|
|
Only #define symbols get translated; you must still correctly
|
|
pack up your own arguments to pass as args for locking functions, etc.
|
|
|
|
************************************************/
|
|
|
|
#include "ruby.h"
|
|
#include <fcntl.h>
|
|
|
|
/* Fcntl loads the constants defined in the system's <fcntl.h> C header
|
|
* file, and used with both the fcntl(2) and open(2) POSIX system calls.
|
|
*
|
|
* Copyright (C) 1997-2001 Yukihiro Matsumoto
|
|
*
|
|
* Documented by mathew <meta@pobox.com>
|
|
*
|
|
* = Usage
|
|
*
|
|
* To perform a fcntl(2) operation, use IO::fcntl in the core classes.
|
|
*
|
|
* To perform an open(2) operation, use IO::sysopen.
|
|
*
|
|
* The set of operations and constants available depends upon specific OS
|
|
* platform. Some values listed below may not be supported on your system.
|
|
*
|
|
* The constants supported by Ruby for use with IO::fcntl are:
|
|
*
|
|
* - F_DUPFD - duplicate a close-on-exec file handle to a non-close-on-exec
|
|
* file handle.
|
|
*
|
|
* - F_GETFD - read the close-on-exec flag of a file handle.
|
|
*
|
|
* - F_SETFD - set the close-on-exec flag of a file handle.
|
|
*
|
|
* - FD_CLOEXEC - the value of the close-on-exec flag.
|
|
*
|
|
* - F_GETFL - get file descriptor flags.
|
|
*
|
|
* - F_SETFL - set file descriptor flags.
|
|
*
|
|
* - O_APPEND, O_NONBLOCK, etc (see below) - file descriptor flag
|
|
* values for the above.
|
|
*
|
|
* - F_GETLK - determine whether a given region of a file is locked.
|
|
*
|
|
* - F_SETLK - acquire a lock on a region of a file.
|
|
*
|
|
* - F_SETLKW - acquire a lock on a region of a file, waiting if necessary.
|
|
*
|
|
* - F_RDLCK, F_WRLCK, F_UNLCK - types of lock for the above.
|
|
*
|
|
* The constants supported by Ruby for use with IO::sysopen are:
|
|
*
|
|
* - O_APPEND - open file in append mode.
|
|
*
|
|
* - O_NOCTTY - open tty without it becoming controlling tty.
|
|
*
|
|
* - O_CREAT - create file if it doesn't exist.
|
|
*
|
|
* - O_EXCL - used with O_CREAT, fail if file exists.
|
|
*
|
|
* - O_TRUNC - truncate file on open.
|
|
*
|
|
* - O_NONBLOCK / O_NDELAY - open in non-blocking mode.
|
|
*
|
|
* - O_RDONLY - open read-only.
|
|
*
|
|
* - O_WRONLY - open write-only.
|
|
*
|
|
* - O_RDWR - open read-write.
|
|
*
|
|
* - O_ACCMODE - mask to extract read/write flags.
|
|
*
|
|
* Example:
|
|
*
|
|
* require 'fcntl'
|
|
*
|
|
* fd = IO::sysopen('/tmp/tempfile',
|
|
* Fcntl::O_WRONLY | Fcntl::O_EXCL | Fcntl::O_CREAT)
|
|
* f = IO.open(fd)
|
|
* f.syswrite("TEMP DATA")
|
|
* f.close
|
|
*
|
|
*/
|
|
void
|
|
Init_fcntl()
|
|
{
|
|
VALUE mFcntl = rb_define_module("Fcntl");
|
|
#ifdef F_DUPFD
|
|
rb_define_const(mFcntl, "F_DUPFD", INT2NUM(F_DUPFD));
|
|
#endif
|
|
#ifdef F_GETFD
|
|
rb_define_const(mFcntl, "F_GETFD", INT2NUM(F_GETFD));
|
|
#endif
|
|
#ifdef F_GETLK
|
|
rb_define_const(mFcntl, "F_GETLK", INT2NUM(F_GETLK));
|
|
#endif
|
|
#ifdef F_SETFD
|
|
rb_define_const(mFcntl, "F_SETFD", INT2NUM(F_SETFD));
|
|
#endif
|
|
#ifdef F_GETFL
|
|
rb_define_const(mFcntl, "F_GETFL", INT2NUM(F_GETFL));
|
|
#endif
|
|
#ifdef F_SETFL
|
|
rb_define_const(mFcntl, "F_SETFL", INT2NUM(F_SETFL));
|
|
#endif
|
|
#ifdef F_SETLK
|
|
rb_define_const(mFcntl, "F_SETLK", INT2NUM(F_SETLK));
|
|
#endif
|
|
#ifdef F_SETLKW
|
|
rb_define_const(mFcntl, "F_SETLKW", INT2NUM(F_SETLKW));
|
|
#endif
|
|
#ifdef FD_CLOEXEC
|
|
rb_define_const(mFcntl, "FD_CLOEXEC", INT2NUM(FD_CLOEXEC));
|
|
#endif
|
|
#ifdef F_RDLCK
|
|
rb_define_const(mFcntl, "F_RDLCK", INT2NUM(F_RDLCK));
|
|
#endif
|
|
#ifdef F_UNLCK
|
|
rb_define_const(mFcntl, "F_UNLCK", INT2NUM(F_UNLCK));
|
|
#endif
|
|
#ifdef F_WRLCK
|
|
rb_define_const(mFcntl, "F_WRLCK", INT2NUM(F_WRLCK));
|
|
#endif
|
|
#ifdef O_CREAT
|
|
rb_define_const(mFcntl, "O_CREAT", INT2NUM(O_CREAT));
|
|
#endif
|
|
#ifdef O_EXCL
|
|
rb_define_const(mFcntl, "O_EXCL", INT2NUM(O_EXCL));
|
|
#endif
|
|
#ifdef O_NOCTTY
|
|
rb_define_const(mFcntl, "O_NOCTTY", INT2NUM(O_NOCTTY));
|
|
#endif
|
|
#ifdef O_TRUNC
|
|
rb_define_const(mFcntl, "O_TRUNC", INT2NUM(O_TRUNC));
|
|
#endif
|
|
#ifdef O_APPEND
|
|
rb_define_const(mFcntl, "O_APPEND", INT2NUM(O_APPEND));
|
|
#endif
|
|
#ifdef O_NONBLOCK
|
|
rb_define_const(mFcntl, "O_NONBLOCK", INT2NUM(O_NONBLOCK));
|
|
#endif
|
|
#ifdef O_NDELAY
|
|
rb_define_const(mFcntl, "O_NDELAY", INT2NUM(O_NDELAY));
|
|
#endif
|
|
#ifdef O_RDONLY
|
|
rb_define_const(mFcntl, "O_RDONLY", INT2NUM(O_RDONLY));
|
|
#endif
|
|
#ifdef O_RDWR
|
|
rb_define_const(mFcntl, "O_RDWR", INT2NUM(O_RDWR));
|
|
#endif
|
|
#ifdef O_WRONLY
|
|
rb_define_const(mFcntl, "O_WRONLY", INT2NUM(O_WRONLY));
|
|
#endif
|
|
#ifdef O_ACCMODE
|
|
rb_define_const(mFcntl, "O_ACCMODE", INT2FIX(O_ACCMODE));
|
|
#else
|
|
rb_define_const(mFcntl, "O_ACCMODE", INT2FIX(O_RDONLY | O_WRONLY | O_RDWR));
|
|
#endif
|
|
}
|