fcntl(3pm) [osx man page]

Fcntl(3pm)						 Perl Programmers Reference Guide						Fcntl(3pm)

NAME

       Fcntl - load the C Fcntl.h defines

SYNOPSIS

	   use Fcntl;
	   use Fcntl qw(:DEFAULT :flock);

DESCRIPTION

       This module is just a translation of the C fcntl.h file.  Unlike the old mechanism of requiring a translated fcntl.ph file, this uses the
       h2xs program (see the Perl source distribution) and your native C compiler.  This means that it has a far more likely chance of getting the
       numbers right.

NOTE

       Only "#define" symbols get translated; you must still correctly pack up your own arguments to pass as args for locking functions, etc.

EXPORTED SYMBOLS

       By default your system's F_* and O_* constants (eg, F_DUPFD and O_CREAT) and the FD_CLOEXEC constant are exported into your namespace.

       You can request that the flock() constants (LOCK_SH, LOCK_EX, LOCK_NB and LOCK_UN) be provided by using the tag ":flock".  See Exporter.

       You can request that the old constants (FAPPEND, FASYNC, FCREAT, FDEFER, FEXCL, FNDELAY, FNONBLOCK, FSYNC, FTRUNC) be provided for
       compatibility reasons by using the tag ":Fcompat".  For new applications the newer versions of these constants are suggested (O_APPEND,
       O_ASYNC, O_CREAT, O_DEFER, O_EXCL, O_NDELAY, O_NONBLOCK, O_SYNC, O_TRUNC).

       For ease of use also the SEEK_* constants (for seek() and sysseek(), e.g. SEEK_END) and the S_I* constants (for chmod() and stat()) are
       available for import.  They can be imported either separately or using the tags ":seek" and ":mode".

       Please refer to your native fcntl(2), open(2), fseek(3), lseek(2) (equal to Perl's seek() and sysseek(), respectively), and chmod(2)
       documentation to see what constants are implemented in your system.

       See perlopentut to learn about the uses of the O_* constants with sysopen().

       See "seek" in perlfunc and "sysseek" in perlfunc about the SEEK_* constants.

       See "stat" in perlfunc about the S_I* constants.

perl v5.16.2							    2012-10-11								Fcntl(3pm)

PMEXP(1p)						User Contributed Perl Documentation						 PMEXP(1p)

NAME

       pmexp - show a module's exports

DESCRIPTION

       Given a module name, this program identifies which symbols are automatically exported (in that package's @EXPORT), those which are
       optionally exported (in that package's @EXPORT_OK), and also lists out the import groups (in that package's %EXPORT_TAGS hash).

EXAMPLES

	   $ pmexp Text::ParseWords
	   Text::ParseWords automatically exports shellwords, quotewords, nested_quotewords, and parse_line
	   Text::ParseWords optionally exports old_shellwords

	   $ pmexp Text::Wrap
	   Text::Wrap automatically exports wrap and fill
	   Text::Wrap optionally exports $columns, $break, and $huge

	   $ pmexp Fcntl
	   Fcntl automatically exports FD_CLOEXEC, F_DUPFD, F_EXLCK, F_GETFD, F_GETFL, F_GETLK, F_GETLK64, F_GETOWN, F_POSIX, F_RDLCK, F_SETFD, F_SETFL, F_SETLK, F_SETLK64, F_SETLKW, F_SETLKW64, F_SETOWN, F_SHLCK, F_UNLCK, F_WRLCK, O_ACCMODE, O_APPEND, O_ASYNC, O_BINARY, O_CREAT, O_DEFER, O_DSYNC, O_EXCL, O_EXLOCK, O_LARGEFILE, O_NDELAY, O_NOCTTY, O_NONBLOCK, O_RDONLY, O_RDWR, O_RSYNC, O_SHLOCK, O_SYNC, O_TEXT, O_TRUNC, and O_WRONLY

	   Fcntl optionally exports FAPPEND, FASYNC, FCREAT, FDEFER, FEXCL, FNDELAY, FNONBLOCK, FSYNC, FTRUNC, LOCK_EX, LOCK_NB, LOCK_SH, and LOCK_UN
	   Fcntl export tag `Fcompat' includes FAPPEND, FASYNC, FCREAT, FDEFER, FEXCL, FNDELAY, FNONBLOCK, FSYNC, and FTRUNC
	   Fcntl export tag `flock' includes LOCK_SH, LOCK_EX, LOCK_NB, and LOCK_UN

BUGS

       The output formatting should be nicer, perhaps using "format" and "write".

SEE ALSO

       pmeth(1), perlmod(1), Exporter(3).

AUTHORS and COPYRIGHTS
       Copyright (C) 1999 Tom Christiansen.

       Copyright (C) 2006-2008 Mark Leighton Fisher.

       This is free software; you can redistribute it and/or modify it under the terms of either: (a) the GNU General Public License as published
       by the Free Software Foundation; either version 1, or (at your option) any later version, or (b) the Perl "Artistic License".  (This is the
       Perl 5 licensing scheme.)

       Please note this is a change from the original pmtools-1.00 (still available on CPAN), as pmtools-1.00 were licensed only under the Perl
       "Artistic License".

perl v5.10.1							    2010-02-22								 PMEXP(1p)