Fcntl

Native Rust implementation built into the interpreter. Runtime: PP. See original documentation for the full Perl reference.

Provides file control constants and file-type test functions matching the POSIX <fcntl.h> and <sys/stat.h> headers. All values are sourced from the libc crate so they match the build platform.

Constants are registered as constant CVs (inlined at compile time). Functions that take arguments (S_ISREG, S_IFMT, etc.) go through stub dispatch.

Functions

FD_CLOEXEC

F_DUPFD

F_GETFD

F_GETFL

F_SETFD

F_SETFL

LOCK_EX

LOCK_NB

LOCK_SH

LOCK_UN

O_APPEND

O_CREAT

O_EXCL

O_NOCTTY

O_NOFOLLOW

O_NONBLOCK

O_RDONLY

O_RDWR

O_TRUNC

O_WRONLY

SEEK_CUR

SEEK_END

SEEK_SET

S_IFBLK

S_IFCHR

S_IFDIR

S_IFIFO

S_IFLNK

S_IFMT

S_IFREG

S_IFSOCK

S_IMODE

S_IRGRP

S_IROTH

S_IRUSR

S_IRWXG

S_IRWXO

S_IRWXU

S_ISBLK

S_ISCHR

S_ISDIR

S_ISFIFO

S_ISGID

S_ISLNK

S_ISREG

S_ISSOCK

S_ISUID

S_ISVTX

S_IWGRP

S_IWOTH

S_IWUSR

S_IXGRP

S_IXOTH

S_IXUSR

fcntl_autoload

Resolves unknown Fcntl constant names at runtime via the AUTOLOAD mechanism.

use Fcntl;
my $val = Fcntl::SOME_CONSTANT();

See also: get_constant_value, dispatch