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Diffstat (limited to 'io/fcntl.h')
| -rw-r--r-- | io/fcntl.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/io/fcntl.h b/io/fcntl.h new file mode 100644 index 0000000000..894c3d4416 --- /dev/null +++ b/io/fcntl.h @@ -0,0 +1,126 @@ +/* Copyright (C) 1991, 1992 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +/* + * POSIX Standard: 6.5 File Control Operations <fcntl.h> + */ + +#ifndef _FCNTL_H + +#define _FCNTL_H 1 +#include <features.h> + +#include <gnu/fcntl.h> +#include <filebits.h> + + +/* Values for the second argument to fcntl. */ +#define F_DUPFD __F_DUPFD /* Duplicate file descriptor. */ +#define F_GETFD __F_GETFD /* Get file descriptor flags. */ +#define F_SETFD __F_SETFD /* Set file descriptor flags. */ +#define F_GETFL __F_GETFL /* Get file status flags. */ +#define F_SETFL __F_SETFL /* Set file status flags. */ +#define F_SETLK __F_SETLK /* Set record locking info. */ +#define F_SETLKW __F_SETLKW /* Set record locking, block. */ + +#ifdef __USE_BSD +#define F_GETOWN __F_GETOWN /* Get owner (receiver of SIGIO). */ +#define F_SETOWN __F_SETOWN /* Set owner (receiver of SIGIO). */ +#endif + + +/* File descriptor flags used with F_GETFD and F_SETFD. */ +#define FD_CLOEXEC __FD_CLOEXEC /* Close on exec. */ + + +/* File access modes for open and fcntl. */ +#define O_RDONLY __O_RDONLY /* Open read-only. */ +#define O_WRONLY __O_WRONLY /* Open write-only. */ +#define O_RDWR __O_RDWR /* Open read/write. */ + + +/* Bits OR'd into the second argument to open. */ +#define O_CREAT __O_CREAT /* Create file if it doesn't exist. */ +#define O_EXCL __O_EXCL /* Fail if file already exists. */ +#define O_TRUNC __O_TRUNC /* Truncate file to zero length. */ +#define O_NOCTTY __O_NOCTTY /* Don't assign a controlling tty. */ + + +/* File status flags for `open' and `fcntl'. */ +#define O_APPEND __O_APPEND /* Writes append to the file. */ +#define O_NONBLOCK __O_NONBLOCK /* No delay when opening the file. */ + +#ifdef __USE_BSD +#define O_NDELAY __O_NDELAY +#endif + +#ifdef __USE_MISC +/* Unix-style flags for `fcntl' F_GETFL and F_SETFL. */ +#define FREAD 0x1 /* Read access. */ +#define FWRITE 0x2 /* Write access. */ +#define FNDELAY O_NONBLOCK +#define FAPPEND O_APPEND +#define FASYNC 0x40 /* Send SIGIO when data is ready. */ +#define FCREAT O_CREAT +#define FTRUNC O_TRUNC +#define FEXCL O_EXCL +#define FSYNC 0x2000 /* Synchronous writes. */ + +#ifndef R_OK /* Verbatim from <unistd.h>. Ugh. */ +/* Values for the second argument to access. + These may be OR'd together. */ +#define R_OK 4 /* Test for read permission. */ +#define W_OK 2 /* Test for write permission. */ +#define X_OK 1 /* Test for execute permission. */ +#define F_OK 0 /* Test for existence. */ +#endif +#endif /* Use misc. */ + + +/* Mask for file access modes. */ +#define O_ACCMODE __O_ACCMODE + + +/* Do the file control operation described by CMD on FD. + The remaining arguments are interpreted depending on CMD. */ +extern int EXFUN(__fcntl, (int __fd, int __cmd, ...)); + +/* Open FILE and return a new file descriptor for it, or -1 on error. + OFLAG determines the type of access used. If O_CREAT is on OFLAG, + the third argument is taken as a `mode_t', the mode of the created file. */ +extern int EXFUN(__open, (CONST char *__file, int __oflag, ...)); + +#define fcntl __fcntl +#define open __open + +/* Create and open FILE, with mode MODE. + This takes an `int' MODE argument because that is + what `mode_t' will be widened to. */ +extern int EXFUN(creat, (CONST char *__file, __mode_t __mode)); + +#ifdef __OPTIMIZE__ +#define creat(file, m) __open((file), O_WRONLY|O_CREAT|O_TRUNC, (m)) +#endif /* Optimizing. */ + +#define flock __flock +#define F_RDLCK __F_RDLCK +#define F_WRLCK __F_WRLCK +#define F_UNLCK __F_UNLCK + + +#endif /* fcntl.h */ |