2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
137 lines
4.7 KiB
C
137 lines
4.7 KiB
C
#ifndef _SYS_FCNTL_H_
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#define _SYS_FCNTL_H_
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/*
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* This file includes the definitions for open and fcntl
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* described by POSIX for <fcntl.h>.
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*/
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#include <sys/featuretest.h>
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#include <sys/types.h>
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#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
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#include <sys/stat.h>
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#endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */
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/*
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* File status flags: these are used by open(2), fcntl(2).
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* They are also used (indirectly) in the kernel file structure f_flags,
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* which is a superset of the open/fcntl flags. Open flags and f_flags
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* are inter-convertible using OFLAGS(fflags) and FFLAGS(oflags).
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* Open/fcntl flags begin with O_; kernel-internal flags begin with F.
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*/
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/* open-only flags */
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#define O_RDONLY 0x00000000 /* open for reading only */
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#define O_WRONLY 0x00000001 /* open for writing only */
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#define O_RDWR 0x00000002 /* open for reading and writing */
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#define O_ACCMODE 0x00000003 /* mask for above modes */
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/* File status flags for open() and fcntl(). POSIX Table 6-5. */
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#define O_APPEND 02000 /* set append mode */
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#define O_NONBLOCK 04000 /* no delay */
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#define O_REOPEN 010000 /* automatically re-open device after driver
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* restart
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*/
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#ifndef __minix /* NOT SUPPORTED! */
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#if defined(_NETBSD_SOURCE)
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#define O_SHLOCK 0x00000010 /* open with shared file lock */
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#define O_EXLOCK 0x00000020 /* open with exclusive file lock */
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#define O_ASYNC 0x00000040 /* signal pgrp when data ready */
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#endif
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#if (_POSIX_C_SOURCE - 0) >= 199309L || \
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(defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
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(_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
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#define O_SYNC 0x00000080 /* synchronous writes */
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#endif
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#if defined(_NETBSD_SOURCE)
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#define O_NOFOLLOW 0x00000100 /* don't follow symlinks on the last */
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/* path component */
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#endif
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#endif /* !__minix */
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/* Oflag values for open(). POSIX Table 6-4. */
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#define O_CREAT 00100 /* creat file if it doesn't exist */
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#define O_EXCL 00200 /* exclusive use flag */
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#define O_NOCTTY 00400 /* do not assign a controlling terminal */
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#define O_TRUNC 01000 /* truncate flag */
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#ifndef __minix /* NOT SUPPORTED! */
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#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
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defined(_NETBSD_SOURCE)
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#define O_DSYNC 0x00010000 /* write: I/O data completion */
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#define O_RSYNC 0x00020000 /* read: I/O completion as for write */
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#endif
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#if defined(_NETBSD_SOURCE)
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#define O_ALT_IO 0x00040000 /* use alternate i/o semantics */
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#define O_DIRECT 0x00080000 /* direct I/O hint */
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#endif
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#endif /* !__minix */
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/*
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* Constants used for fcntl(2)
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*/
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/* command values */
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/* These values are used for cmd in fcntl(). POSIX Table 6-1. */
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#define F_DUPFD 0 /* duplicate file descriptor */
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#define F_GETFD 1 /* get file descriptor flags */
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#define F_SETFD 2 /* set file descriptor flags */
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#define F_GETFL 3 /* get file status flags */
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#define F_SETFL 4 /* set file status flags */
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#define F_GETLK 5 /* get record locking information */
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#define F_SETLK 6 /* set record locking information */
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#define F_SETLKW 7 /* set record locking info; wait if blocked */
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#define F_FREESP 8 /* free a section of a regular file */
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/* File descriptor flags used for fcntl(). POSIX Table 6-2. */
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#define FD_CLOEXEC 1 /* close on exec flag for third arg of fcntl */
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/* record locking flags (F_GETLK, F_SETLK, F_SETLKW) */
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#define F_RDLCK 1 /* shared or read lock */
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#define F_WRLCK 2 /* exclusive or write lock */
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#define F_UNLCK 3 /* unlock */
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/*
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* Advisory file segment locking data type -
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* information passed to system by user
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*/
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struct flock {
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short l_type; /* type: F_RDLCK, F_WRLCK, or F_UNLCK */
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short l_whence; /* flag for starting offset */
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off_t l_start; /* relative offset in bytes */
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off_t l_len; /* size; if 0, then until EOF */
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pid_t l_pid; /* process id of the locks' owner */
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};
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#if defined(_NETBSD_SOURCE)
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/* lock operations for flock(2) */
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#define LOCK_SH F_RDLCK /* Shared lock */
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#define LOCK_EX F_WRLCK /* Exclusive lock */
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#define LOCK_NB 0x0080 /* Do not block when locking */
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#define LOCK_UN F_UNLCK /* Unlock */
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#endif
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/* Always ensure that these are consistent with <stdio.h> and <unistd.h>! */
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#ifndef SEEK_SET
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#define SEEK_SET 0 /* set file offset to offset */
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#endif
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#ifndef SEEK_CUR
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#define SEEK_CUR 1 /* set file offset to current plus offset */
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#endif
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#ifndef SEEK_END
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#define SEEK_END 2 /* set file offset to EOF plus offset */
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#endif
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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int open(const char *, int, ...);
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int creat(const char *, mode_t);
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int fcntl(int, int, ...);
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#if defined(_NETBSD_SOURCE)
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int flock(int, int);
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#endif /* _NETBSD_SOURCE */
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__END_DECLS
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#endif /* !_SYS_FCNTL_H_ */
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