93 lines
4.1 KiB
C
93 lines
4.1 KiB
C
/*
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* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008
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* The President and Fellows of Harvard College.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _KERN_TYPES_H_
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#define _KERN_TYPES_H_
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/* Get machine-dependent types. */
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#include <kern/machine/types.h>
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/*
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* Machine-independent types visible to user level.
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*
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* Define everything with leading underscores to avoid polluting the C
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* namespace for applications.
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*
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* The C standard (and additionally the POSIX standard) define rules
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* for what families of symbol names are allowed to be used by
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* application programmers, and what families of symbol names can be
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* defined by various standard header files. The C library needs to
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* conform to those rules, to the extent reasonably practical, to make
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* sure that application code compiles and behaves as intended.
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*
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* Many of the C library's headers need to use one or more of these
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* types in places where the "real" name of the type cannot be
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* exposed, or expose the names of some of these types and not others.
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* (For example, <string.h> is supposed to define size_t, but is not
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* supposed to also define e.g. pid_t.)
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*
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* For this reason we define everything with two underscores in front
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* of it; in C such symbol names are reserved for the implementation,
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* which we are, so this file can be included anywhere in any libc
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* header without causing namespace problems. The "real" type names
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* are defined with an additional layer of typedefs; this happens for
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* the kernel in <types.h> and for userland in (mostly) <sys/types.h>
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* and also various other places as per relevant standards.
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*/
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typedef __u32 __blkcnt_t; /* Count of blocks */
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typedef __u32 __blksize_t; /* Size of an I/O block */
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typedef __u64 __counter_t; /* Event counter */
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typedef __u32 __daddr_t; /* Disk block number */
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typedef __u32 __dev_t; /* Hardware device ID */
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typedef __u32 __fsid_t; /* Filesystem ID */
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typedef __i32 __gid_t; /* Group ID */
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typedef __u32 __in_addr_t; /* Internet address */
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typedef __u32 __in_port_t; /* Internet port number */
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typedef __u32 __ino_t; /* Inode number */
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typedef __u32 __mode_t; /* File access mode */
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typedef __u16 __nlink_t; /* Number of links (intentionally only 16 bits) */
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typedef __i64 __off_t; /* Offset within file */
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typedef __i32 __pid_t; /* Process ID */
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typedef __u64 __rlim_t; /* Resource limit quantity */
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typedef __u8 __sa_family_t;/* Socket address family */
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typedef __i64 __time_t; /* Time in seconds */
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typedef __i32 __uid_t; /* User ID */
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typedef int __nfds_t; /* Number of file handles */
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typedef int __socklen_t; /* Socket-related length */
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/* See note in <stdarg.h> */
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#ifdef __GNUC__
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typedef __builtin_va_list __va_list;
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#endif
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#endif /* _KERN_TYPES_H_ */
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