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- package Fcntl;
-
- =head1 NAME
-
- Fcntl - load the C Fcntl.h defines
-
- =head1 SYNOPSIS
-
- use Fcntl;
- use Fcntl qw(:DEFAULT :flock);
-
- =head1 DESCRIPTION
-
- This module is just a translation of the C F<fnctl.h> file.
- Unlike the old mechanism of requiring a translated F<fnctl.ph>
- file, this uses the B<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.
-
- =head1 NOTE
-
- Only C<#define> symbols get translated; you must still correctly
- pack up your own arguments to pass as args for locking functions, etc.
-
- =head1 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 C<:flock>. See L<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 C<: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).
-
- Please refer to your native fcntl() and open() documentation to see
- what constants are implemented in your system.
-
- =cut
-
- use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS $AUTOLOAD);
-
- require Exporter;
- require DynaLoader;
- @ISA = qw(Exporter DynaLoader);
- $VERSION = "1.03";
- # Items to export into callers namespace by default
- # (move infrequently used names to @EXPORT_OK below)
- @EXPORT =
- qw(
- FD_CLOEXEC
- F_DUPFD
- F_EXLCK
- F_GETFD
- F_GETFL
- F_GETLK
- F_GETOWN
- F_POSIX
- F_RDLCK
- F_SETFD
- F_SETFL
- F_SETLK
- F_SETLKW
- 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_NDELAY
- O_NOCTTY
- O_NONBLOCK
- O_RDONLY
- O_RDWR
- O_RSYNC
- O_SHLOCK
- O_SYNC
- O_TEXT
- O_TRUNC
- O_WRONLY
- );
-
- # Other items we are prepared to export if requested
- @EXPORT_OK = qw(
- FAPPEND
- FASYNC
- FCREAT
- FDEFER
- FEXCL
- FNDELAY
- FNONBLOCK
- FSYNC
- FTRUNC
- LOCK_EX
- LOCK_NB
- LOCK_SH
- LOCK_UN
- );
- # Named groups of exports
- %EXPORT_TAGS = (
- 'flock' => [qw(LOCK_SH LOCK_EX LOCK_NB LOCK_UN)],
- 'Fcompat' => [qw(FAPPEND FASYNC FCREAT FDEFER FEXCL
- FNDELAY FNONBLOCK FSYNC FTRUNC)],
- );
-
- sub AUTOLOAD {
- (my $constname = $AUTOLOAD) =~ s/.*:://;
- my $val = constant($constname, 0);
- if ($! != 0) {
- if ($! =~ /Invalid/) {
- $AutoLoader::AUTOLOAD = $AUTOLOAD;
- goto &AutoLoader::AUTOLOAD;
- }
- else {
- my ($pack,$file,$line) = caller;
- die "Your vendor has not defined Fcntl macro $constname, used at $file line $line.
- ";
- }
- }
- *$AUTOLOAD = sub { $val };
- goto &$AUTOLOAD;
- }
-
- bootstrap Fcntl $VERSION;
-
- 1;
-