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187 lines
3.8 KiB
Perl
187 lines
3.8 KiB
Perl
package Fcntl;
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=head1 NAME
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Fcntl - load the C Fcntl.h defines
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=head1 SYNOPSIS
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use Fcntl;
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use Fcntl qw(:DEFAULT :flock);
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=head1 DESCRIPTION
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This module is just a translation of the C F<fcntl.h> file.
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Unlike the old mechanism of requiring a translated F<fcntl.ph>
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file, this uses the B<h2xs> program (see the Perl source distribution)
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and your native C compiler. This means that it has a
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far more likely chance of getting the numbers right.
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=head1 NOTE
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Only C<#define> symbols get translated; you must still correctly
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pack up your own arguments to pass as args for locking functions, etc.
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=head1 EXPORTED SYMBOLS
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By default your system's F_* and O_* constants (eg, F_DUPFD and
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O_CREAT) and the FD_CLOEXEC constant are exported into your namespace.
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You can request that the flock() constants (LOCK_SH, LOCK_EX, LOCK_NB
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and LOCK_UN) be provided by using the tag C<:flock>. See L<Exporter>.
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You can request that the old constants (FAPPEND, FASYNC, FCREAT,
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FDEFER, FEXCL, FNDELAY, FNONBLOCK, FSYNC, FTRUNC) be provided for
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compatibility reasons by using the tag C<:Fcompat>. For new
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applications the newer versions of these constants are suggested
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(O_APPEND, O_ASYNC, O_CREAT, O_DEFER, O_EXCL, O_NDELAY, O_NONBLOCK,
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O_SYNC, O_TRUNC).
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For ease of use also the SEEK_* constants (for seek() and sysseek(),
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e.g. SEEK_END) and the S_I* constants (for chmod() and stat()) are
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available for import. They can be imported either separately or using
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the tags C<:seek> and C<:mode>.
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Please refer to your native fcntl(2), open(2), fseek(3), lseek(2)
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(equal to Perl's seek() and sysseek(), respectively), and chmod(2)
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documentation to see what constants are implemented in your system.
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See L<perlopentut> to learn about the uses of the O_* constants
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with sysopen().
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See L<perlfunc/seek> and L<perlfunc/sysseek> about the SEEK_* constants.
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See L<perlfunc/stat> about the S_I* constants.
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=cut
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use strict;
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our($VERSION, @ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS);
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require Exporter;
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require XSLoader;
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@ISA = qw(Exporter);
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$VERSION = '1.11';
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XSLoader::load();
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# Named groups of exports
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%EXPORT_TAGS = (
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'flock' => [qw(LOCK_SH LOCK_EX LOCK_NB LOCK_UN)],
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'Fcompat' => [qw(FAPPEND FASYNC FCREAT FDEFER FDSYNC FEXCL FLARGEFILE
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FNDELAY FNONBLOCK FRSYNC FSYNC FTRUNC)],
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'seek' => [qw(SEEK_SET SEEK_CUR SEEK_END)],
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'mode' => [qw(S_ISUID S_ISGID S_ISVTX S_ISTXT
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_S_IFMT S_IFREG S_IFDIR S_IFLNK
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S_IFSOCK S_IFBLK S_IFCHR S_IFIFO S_IFWHT S_ENFMT
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S_IRUSR S_IWUSR S_IXUSR S_IRWXU
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S_IRGRP S_IWGRP S_IXGRP S_IRWXG
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S_IROTH S_IWOTH S_IXOTH S_IRWXO
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S_IREAD S_IWRITE S_IEXEC
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S_ISREG S_ISDIR S_ISLNK S_ISSOCK
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S_ISBLK S_ISCHR S_ISFIFO
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S_ISWHT S_ISENFMT
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S_IFMT S_IMODE
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)],
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);
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# Items to export into callers namespace by default
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# (move infrequently used names to @EXPORT_OK below)
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@EXPORT =
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qw(
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FD_CLOEXEC
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F_ALLOCSP
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F_ALLOCSP64
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F_COMPAT
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F_DUP2FD
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F_DUPFD
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F_EXLCK
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F_FREESP
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F_FREESP64
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F_FSYNC
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F_FSYNC64
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F_GETFD
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F_GETFL
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F_GETLK
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F_GETLK64
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F_GETOWN
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F_NODNY
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F_POSIX
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F_RDACC
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F_RDDNY
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F_RDLCK
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F_RWACC
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F_RWDNY
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F_SETFD
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F_SETFL
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F_SETLK
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F_SETLK64
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F_SETLKW
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F_SETLKW64
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F_SETOWN
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F_SHARE
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F_SHLCK
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F_UNLCK
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F_UNSHARE
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F_WRACC
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F_WRDNY
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F_WRLCK
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O_ACCMODE
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O_ALIAS
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O_APPEND
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O_ASYNC
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O_BINARY
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O_CREAT
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O_DEFER
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O_DIRECT
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O_DIRECTORY
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O_DSYNC
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O_EXCL
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O_EXLOCK
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O_LARGEFILE
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O_NDELAY
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O_NOCTTY
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O_NOFOLLOW
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O_NOINHERIT
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O_NONBLOCK
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O_RANDOM
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O_RAW
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O_RDONLY
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O_RDWR
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O_RSRC
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O_RSYNC
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O_SEQUENTIAL
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O_SHLOCK
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O_SYNC
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O_TEMPORARY
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O_TEXT
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O_TRUNC
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O_WRONLY
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);
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# Other items we are prepared to export if requested
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@EXPORT_OK = (qw(
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DN_ACCESS
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DN_ATTRIB
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DN_CREATE
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DN_DELETE
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DN_MODIFY
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DN_MULTISHOT
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DN_RENAME
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F_GETLEASE
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F_GETSIG
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F_NOTIFY
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F_SETLEASE
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F_SETSIG
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LOCK_MAND
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LOCK_READ
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LOCK_RW
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LOCK_WRITE
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O_IGNORE_CTTY
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O_NOATIME
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O_NOLINK
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O_NOTRANS
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), map {@{$_}} values %EXPORT_TAGS);
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1;
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