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- /*
- * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
- * The President and Fellows of Harvard College.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- #ifndef _TYPES_H_
- #define _TYPES_H_
- /*
- * Master kernel header file.
- *
- * The model for the include files in the kernel is as follows:
- *
- * - Every source file includes this file, <types.h>, first.
- *
- * - Every other header file may assume this file has been
- * included, but should explicitly include any other headers it
- * uses to compile.
- *
- * - Some exceptions to the previous rules exist among the headers
- * exported to userland; those files should be included in the
- * kernel only indirectly via other, non-exported, headers, as
- * described in comments therein.
- *
- * - Every source or header file should include each file it
- * directly uses, even if that header is included via some other
- * header. This helps to prevent build failures when unrelated
- * dependencies are changed around.
- *
- * - As a matter of convention, the ordering of include files in
- * the base system is in order of subsystem dependence. That is,
- * lower-level code like <spinlock.h> should come before
- * higher-level code like <addrspace.h> or <vfs.h>. This
- * convention helps one to keep keep track of (and learn) the
- * organization of the system.
- *
- * The general ordering is as follows:
- * 1. <types.h>
- * 2. Kernel ABI definitions, e.g. <kern/errno.h>.
- * 3. Support code: <lib.h>, arrays, queues, etc.
- * 4. Low-level code: locks, trapframes, etc.
- * 5. Kernel subsystems: threads, VM, VFS, etc.
- * 6. System call layer, e.g. <elf.h>, <syscall.h>.
- *
- * Subsystem-private headers (the only extant example is
- * switchframe.h) and then kernel option headers generated by
- * config come last.
- *
- * There is no one perfect ordering, because the kernel is not
- * composed of perfectly nested layers. But for the most part
- * this principle produces a workable result.
- */
- /* Get types visible to userland, both MI and MD. */
- #include <kern/types.h>
- /* Get machine-dependent types not visible to userland. */
- #include <machine/types.h>
- /*
- * Define userptr_t as a pointer to a one-byte struct, so it won't mix
- * with other pointers.
- */
- struct __userptr { char _dummy; };
- typedef struct __userptr *userptr_t;
- typedef const struct __userptr *const_userptr_t;
- /*
- * Proper (non-underscore) names for the types that are exposed to
- * userland.
- */
- /* machine-dependent from <kern/machine/types.h>... */
- typedef __i8 int8_t;
- typedef __i16 int16_t;
- typedef __i32 int32_t;
- typedef __i64 int64_t;
- typedef __u8 uint8_t;
- typedef __u16 uint16_t;
- typedef __u32 uint32_t;
- typedef __u64 uint64_t;
- typedef __size_t size_t;
- typedef __ssize_t ssize_t;
- typedef __intptr_t intptr_t;
- typedef __uintptr_t uintptr_t;
- typedef __ptrdiff_t ptrdiff_t;
- /* ...and machine-independent from <kern/types.h>. */
- typedef __blkcnt_t blkcnt_t;
- typedef __blksize_t blksize_t;
- typedef __daddr_t daddr_t;
- typedef __dev_t dev_t;
- typedef __fsid_t fsid_t;
- typedef __gid_t gid_t;
- typedef __in_addr_t in_addr_t;
- typedef __in_port_t in_port_t;
- typedef __ino_t ino_t;
- typedef __mode_t mode_t;
- typedef __nlink_t nlink_t;
- typedef __off_t off_t;
- typedef __pid_t pid_t;
- typedef __rlim_t rlim_t;
- typedef __sa_family_t sa_family_t;
- typedef __time_t time_t;
- typedef __uid_t uid_t;
- typedef __nfds_t nfds_t;
- typedef __socklen_t socklen_t;
- /*
- * Number of bits per byte.
- */
- #define CHAR_BIT __CHAR_BIT
- /*
- * Null pointer.
- */
- #define NULL ((void *)0)
- /*
- * Boolean.
- */
- typedef _Bool bool;
- #define true 1
- #define false 0
- #endif /* _TYPES_H_ */
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