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Initial Spring 2016 commit.

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Geoffrey Challen
2015-12-23 00:50:04 +00:00
commit cafa9f5690
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50
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/*
* Copyright (c) 2009
* 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 _KERN_ENDIAN_H_
#define _KERN_ENDIAN_H_
/*
* Machine-independent and exported endianness definitions.
*
* Note: get these via <endian.h> in the kernel and <arpa/inet.h> in
* userland.
*
* This is the historic BSD way of defining endianness.
*/
#define _LITTLE_ENDIAN 1234
#define _BIG_ENDIAN 4321
#define _PDP_ENDIAN 3412
/* This defines _BYTE_ORDER to one of the above. */
#include <kern/machine/endian.h>
#endif /* _KERN_ENDIAN_H_ */

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/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 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 _KERN_ERRMSG_H_
#define _KERN_ERRMSG_H_
/*
* Error strings.
* This table must agree with kern/errno.h.
*
* Note that since this actually defines sys_errlist and sys_nerrlist, it
* should only be included in one file. For the kernel, that file is
* lib/misc.c; for userland it's lib/libc/strerror.c.
*/
const char *const sys_errlist[] = {
"Operation succeeded", /* 0 */
"Function not implemented", /* ENOSYS */
"(undefined error 2)", /* unused */
"Out of memory", /* ENOMEM */
"Operation would block", /* EAGAIN (also EWOULDBLOCK) */
"Interrupted system call", /* EINTR */
"Bad memory reference", /* EFAULT */
"String too long", /* ENAMETOOLONG */
"Invalid argument", /* EINVAL */
"Operation not permitted", /* EPERM */
"Permission denied", /* EACCES */
"Too many processes", /* EMPROC (EPROCLIM in Unix) */
"Too many processes in system",/* ENPROC */
"File is not executable", /* ENOEXEC */
"Argument list too long", /* E2BIG */
"No such process", /* ESRCH */
"No child processes", /* ECHILD */
"Not a directory", /* ENOTDIR */
"Is a directory", /* EISDIR */
"No such file or directory", /* ENOENT */
"Too many levels of symbolic links",/* ELOOP */
"Directory not empty", /* ENOTEMPTY */
"File or object exists", /* EEXIST */
"Too many hard links", /* EMLINK */
"Cross-device link", /* EXDEV */
"No such device", /* ENODEV */
"Device not available", /* ENXIO */
"Device or resource busy", /* EBUSY */
"Too many open files", /* EMFILE */
"Too many open files in system",/* ENFILE */
"Bad file number", /* EBADF */
"Invalid or inappropriate ioctl",/* EIOCTL (ENOTTY in Unix) */
"Input/output error", /* EIO */
"Illegal seek", /* ESPIPE */
"Broken pipe", /* EPIPE */
"Read-only file system", /* EROFS */
"No space left on device", /* ENOSPC */
"Disc quota exceeded", /* EDQUOT */
"File too large", /* EFBIG */
"Invalid file type or format",/* EFTYPE */
"Argument out of range", /* EDOM */
"Result out of range", /* ERANGE */
"Invalid multibyte character sequence",/* EILSEQ */
"Not a socket", /* ENOTSOCK */
"Is a socket", /* EISSOCK (EOPNOTSUPP in Unix) */
"Socket is already connected",/* EISCONN */
"Socket is not connected", /* ENOTCONN */
"Socket has been shut down", /* ESHUTDOWN */
"Protocol family not supported",/* EPFNOSUPPORT */
"Socket type not supported", /* ESOCKTNOSUPPORT */
"Protocol not supported", /* EPROTONOSUPPORT */
"Protocol wrong type for socket",/* EPROTOTYPE */
"Address family not supported by protocol family",/* EAFNOSUPPORT */
"Protocol option not available",/* ENOPROTOOPT */
"Address already in use", /* EADDRINUSE */
"Cannot assign requested address",/* EADDRNOTAVAIL */
"Network is down", /* ENETDOWN */
"Network is unreachable", /* ENETUNREACH */
"Host is down", /* EHOSTDOWN */
"Host is unreachable", /* EHOSTUNREACH */
"Connection refused", /* ECONNREFUSED */
"Connection timed out", /* ETIMEDOUT */
"Connection reset by peer", /* ECONNRESET */
"Message too large", /* EMSGSIZE */
"Threads operation not supported",/* ENOTSUP */
};
/*
* Number of entries in sys_errlist.
*/
const int sys_nerr = sizeof(sys_errlist)/sizeof(const char *);
#endif /* _KERN_ERRMSG_H_ */

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/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 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 _KERN_ERRNO_H_
#define _KERN_ERRNO_H_
/*
* If you change this, be sure to make appropriate corresponding changes
* to kern/errmsg.h as well. You might also want to change the man page
* for errno to document the new error.
*
* This has been changed relative to OS/161 1.x to make the grouping
* more logical.
*
* Also note that this file has to work from assembler, so it should
* contain only symbolic constants.
*/
#define ENOSYS 1 /* Function not implemented */
/* unused 2 */
#define ENOMEM 3 /* Out of memory */
#define EAGAIN 4 /* Operation would block */
#define EINTR 5 /* Interrupted system call */
#define EFAULT 6 /* Bad memory reference */
#define ENAMETOOLONG 7 /* String too long */
#define EINVAL 8 /* Invalid argument */
#define EPERM 9 /* Operation not permitted */
#define EACCES 10 /* Permission denied */
#define EMPROC 11 /* Too many processes */
#define ENPROC 12 /* Too many processes in system */
#define ENOEXEC 13 /* File is not executable */
#define E2BIG 14 /* Argument list too long */
#define ESRCH 15 /* No such process */
#define ECHILD 16 /* No child processes */
#define ENOTDIR 17 /* Not a directory */
#define EISDIR 18 /* Is a directory */
#define ENOENT 19 /* No such file or directory */
#define ELOOP 20 /* Too many levels of symbolic links */
#define ENOTEMPTY 21 /* Directory not empty */
#define EEXIST 22 /* File or object exists */
#define EMLINK 23 /* Too many hard links */
#define EXDEV 24 /* Cross-device link */
#define ENODEV 25 /* No such device */
#define ENXIO 26 /* Device not available */
#define EBUSY 27 /* Device or resource busy */
#define EMFILE 28 /* Too many open files */
#define ENFILE 29 /* Too many open files in system */
#define EBADF 30 /* Bad file number */
#define EIOCTL 31 /* Invalid or inappropriate ioctl */
#define EIO 32 /* Input/output error */
#define ESPIPE 33 /* Illegal seek */
#define EPIPE 34 /* Broken pipe */
#define EROFS 35 /* Read-only file system */
#define ENOSPC 36 /* No space left on device */
#define EDQUOT 37 /* Disc quota exceeded */
#define EFBIG 38 /* File too large */
#define EFTYPE 39 /* Invalid file type or format */
#define EDOM 40 /* Argument out of range */
#define ERANGE 41 /* Result out of range */
#define EILSEQ 42 /* Invalid multibyte character sequence */
#define ENOTSOCK 43 /* Not a socket */
#define EISSOCK 44 /* Is a socket */
#define EISCONN 45 /* Socket is already connected */
#define ENOTCONN 46 /* Socket is not connected */
#define ESHUTDOWN 47 /* Socket has been shut down */
#define EPFNOSUPPORT 48 /* Protocol family not supported */
#define ESOCKTNOSUPPORT 49 /* Socket type not supported */
#define EPROTONOSUPPORT 50 /* Protocol not supported */
#define EPROTOTYPE 51 /* Protocol wrong type for socket */
#define EAFNOSUPPORT 52 /* Address family not supported by protocol family */
#define ENOPROTOOPT 53 /* Protocol option not available */
#define EADDRINUSE 54 /* Address already in use */
#define EADDRNOTAVAIL 55 /* Cannot assign requested address */
#define ENETDOWN 56 /* Network is down */
#define ENETUNREACH 57 /* Network is unreachable */
#define EHOSTDOWN 58 /* Host is down */
#define EHOSTUNREACH 59 /* Host is unreachable */
#define ECONNREFUSED 60 /* Connection refused */
#define ETIMEDOUT 61 /* Connection timed out */
#define ECONNRESET 62 /* Connection reset by peer */
#define EMSGSIZE 63 /* Message too large */
#define ENOTSUP 64 /* Threads operation not supported */
#endif /* _KERN_ERRNO_H_ */

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/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 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 _KERN_FCNTL_H_
#define _KERN_FCNTL_H_
/*
* Constants for libc's <fcntl.h>.
*/
/*
* Important
*/
/* Flags for open: choose one of these: */
#define O_RDONLY 0 /* Open for read */
#define O_WRONLY 1 /* Open for write */
#define O_RDWR 2 /* Open for read and write */
/* then or in any of these: */
#define O_CREAT 4 /* Create file if it doesn't exist */
#define O_EXCL 8 /* With O_CREAT, fail if file already exists */
#define O_TRUNC 16 /* Truncate file upon open */
#define O_APPEND 32 /* All writes happen at EOF (optional feature) */
#define O_NOCTTY 64 /* Required by POSIX, != 0, but does nothing */
/* Additional related definition */
#define O_ACCMODE 3 /* mask for O_RDONLY/O_WRONLY/O_RDWR */
/*
* Not so important
*/
/* operation codes for flock() */
#define LOCK_SH 1 /* shared lock */
#define LOCK_EX 2 /* exclusive lock */
#define LOCK_UN 3 /* release the lock */
#define LOCK_NB 4 /* flag: don't block */
/*
* Mostly pretty useless
*/
/* fcntl() operations */
#define F_DUPFD 0 /* like dup() but not quite */
#define F_GETFD 1 /* get per-handle flags */
#define F_SETFD 2 /* set per-handle flags */
#define F_GETFL 3 /* get per-file flags (O_* open flags) */
#define F_SETFL 4 /* set per-file flags (O_* open flags) */
#define F_GETOWN 5 /* get process/pgroup for SIGURG and SIGIO */
#define F_SETOWN 6 /* set process/pgroup for SIGURG and SIGIO */
#define F_GETLK 7 /* inspect record locks */
#define F_SETLK 8 /* acquire record locks nonblocking */
#define F_SETLKW 9 /* acquire record locks and wait */
/* flag for F_GETFD and F_SETFD */
#define FD_CLOEXEC 1 /* close-on-exec */
/* modes for fcntl (F_GETLK/SETLK) locking */
#define F_RDLCK 0 /* shared lock */
#define F_WRLCK 1 /* exclusive lock */
#define F_UNLCK 2 /* unlock */
/* struct for fcntl (F_GETLK/SETLK) locking */
struct flock {
off_t l_start; /* place in file */
int l_whence; /* SEEK_SET, SEEK_CUR, or SEEK_END */
int l_type; /* F_RDLCK or F_WRLCK */
off_t l_len; /* length of locked region */
pid_t l_pid; /* process that holds the lock */
};
#endif /* _KERN_FCNTL_H_ */

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/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
* 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 _KERN_IOCTL_H_
#define _KERN_IOCTL_H_
/*
* ioctl operation codes
*/
/* (none yet) */
#endif /* _KERN_IOCTL_H_*/

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/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
* 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 _KERN_IOVEC_H_
#define _KERN_IOVEC_H_
/*
* iovec structure, used in the readv/writev scatter/gather I/O calls,
* and within the kernel for keeping track of blocks of data for I/O.
*/
struct iovec {
/*
* For maximum type safety, when in the kernel, distinguish
* user pointers from kernel pointers.
*
* (A pointer is a user pointer if it *came* from userspace,
* not necessarily if it *points* to userspace. If a system
* call passes 0xdeadbeef, it points to the kernel, but it's
* still a user pointer.)
*
* In userspace, there are only user pointers; also, the name
* iov_base is defined by POSIX.
*
* Note that to work properly (without extra unwanted fiddling
* around) this scheme requires that void* and userptr_t have
* the same machine representation. Machines where this isn't
* true are theoretically possible under the C standard, but
* do not exist in practice.
*/
#ifdef _KERNEL
union {
userptr_t iov_ubase; /* user-supplied pointer */
void *iov_kbase; /* kernel-supplied pointer */
};
#else
void *iov_base; /* user-supplied pointer */
#endif
size_t iov_len; /* Length of data */
};
#endif /* _KERN_IOVEC_H_ */

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/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 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 _KERN_LIMITS_H_
#define _KERN_LIMITS_H_
/*
* Constants for libc's <limits.h> - system limits.
*
* The symbols are prefixed with __ here to avoid namespace pollution
* in libc. Use <limits.h> (in either userspace or the kernel) to get
* the proper names.
*
* These are Unix-style limits that Unix defines; you can change them
* around or add others as needed or as are appropriate to your system
* design.
*
* Likewise, the default values provided here are fairly reasonable,
* but you can change them around pretty freely and userspace code
* should adapt. Do change these as needed to match your
* implementation.
*/
/*
* Important, both as part of the system call API and for system behavior.
*
* 255 for NAME_MAX and 1024 for PATH_MAX are conventional. ARG_MAX
* should be at least 16K. In real systems it often runs to 256K or
* more.
*/
/* Longest filename (without directory) not including null terminator */
#define __NAME_MAX 255
/* Longest full path name */
#define __PATH_MAX 1024
/* Max bytes for an exec function (should be at least 16K) */
#define __ARG_MAX (64 * 1024)
/*
* Important for system behavior, but not a big part of the API.
*
* Most modern systems don't have OPEN_MAX at all, and instead go by
* whatever limit is set with setrlimit().
*/
/* Min value for a process ID (that can be assigned to a user process) */
#define __PID_MIN 2
/* Max value for a process ID (change this to match your implementation) */
#define __PID_MAX 32767
/* Max open files per process */
#define __OPEN_MAX 128
/* Max bytes for atomic pipe I/O -- see description in the pipe() man page */
#define __PIPE_BUF 512
/*
* Not so important parts of the API. (Especially in OS/161 where we
* don't do credentials by default.)
*/
/* Max number of supplemental group IDs in process credentials */
#define __NGROUPS_MAX 32
/* Max login name size (for setlogin/getlogin), incl. null */
#define __LOGIN_NAME_MAX 17
/*
* Not very important at all.
*/
/* Max number of iovec structures at once for readv/writev/preadv/pwritev */
#define __IOV_MAX 1024
#endif /* _KERN_LIMITS_H_ */

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/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 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 _KERN_REBOOT_H_
#define _KERN_REBOOT_H_
/*
* Constants for libc's <sys/reboot.h> and the reboot() system call.
* (Not all that important.)
*/
/* Codes for reboot */
#define RB_REBOOT 0 /* Reboot system */
#define RB_HALT 1 /* Halt system and do not reboot */
#define RB_POWEROFF 2 /* Halt system and power off */
#endif /* _KERN_REBOOT_H_ */

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/*
* Copyright (c) 2004, 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 _KERN_RESOURCE_H_
#define _KERN_RESOURCE_H_
/*
* Definitions for resource usage and limits.
*
* Not very important.
*/
/* priorities for setpriority() */
#define PRIO_MIN (-20)
#define PRIO_MAX 20
/* "which" codes for setpriority() */
#define PRIO_PROCESS 0
#define PRIO_PGRP 1
#define PRIO_USER 2
/* flags for getrusage() */
#define RUSAGE_SELF 0
#define RUSAGE_CHILDREN (-1)
struct rusage {
struct timeval ru_utime;
struct timeval ru_stime;
__size_t ru_maxrss; /* maximum RSS during lifespan (kb) */
__counter_t ru_ixrss; /* text memory usage (kb-ticks) */
__counter_t ru_idrss; /* data memory usage (kb-ticks) */
__counter_t ru_isrss; /* stack memory usage (kb-ticks) */
__counter_t ru_minflt; /* minor VM faults (count) */
__counter_t ru_majflt; /* major VM faults (count) */
__counter_t ru_nswap; /* whole-process swaps (count) */
__counter_t ru_inblock; /* file blocks read (count) */
__counter_t ru_oublock; /* file blocks written (count) */
__counter_t ru_msgrcv; /* socket/pipe packets rcv'd (count) */
__counter_t ru_msgsnd; /* socket/pipe packets sent (count) */
__counter_t ru_nsignals; /* signals delivered (count) */
__counter_t ru_nvcsw; /* voluntary context switches (count)*/
__counter_t ru_nivcsw; /* involuntary ditto (count) */
};
/* limit codes for getrusage/setrusage */
#define RLIMIT_NPROC 0 /* max procs per user (count) */
#define RLIMIT_NOFILE 1 /* max open files per proc (count) */
#define RLIMIT_CPU 2 /* cpu usage (seconds) */
#define RLIMIT_DATA 3 /* max .data/sbrk size (bytes) */
#define RLIMIT_STACK 4 /* max stack size (bytes) */
#define RLIMIT_MEMLOCK 5 /* max locked memory region (bytes) */
#define RLIMIT_RSS 6 /* max RSS (bytes) */
#define RLIMIT_CORE 7 /* core file size (bytes) */
#define RLIMIT_FSIZE 8 /* max file size (bytes) */
#define __RLIMIT_NUM 9 /* number of limits */
struct rlimit {
__rlim_t rlim_cur; /* soft limit */
__rlim_t rlim_max; /* hard limit */
};
#define RLIM_INFINITY (~(__rlim_t)0)
#endif /* _KERN_RESOURCE_H_ */

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/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 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 _KERN_SEEK_H_
#define _KERN_SEEK_H_
/*
* Codes for lseek(), which are shared in libc between <fcntl.h> and
* <unistd.h> and thus get their own file.
*
* These are pretty important. Back in the day (like 20+ years ago)
* people would often just write the values 0, 1, and 2, but that's
* really not recommended.
*/
#define SEEK_SET 0 /* Seek relative to beginning of file */
#define SEEK_CUR 1 /* Seek relative to current position in file */
#define SEEK_END 2 /* Seek relative to end of file */
#endif /* _KERN_SEEK_H_ */

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/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009, 2014
* 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 _KERN_SFS_H_
#define _KERN_SFS_H_
/*
* SFS definitions visible to userspace. This covers the on-disk format
* and is used by tools that work on SFS volumes, such as mksfs.
*/
#define SFS_MAGIC 0xabadf001 /* magic number identifying us */
#define SFS_BLOCKSIZE 512 /* size of our blocks */
#define SFS_VOLNAME_SIZE 32 /* max length of volume name */
#define SFS_NDIRECT 15 /* # of direct blocks in inode */
#define SFS_NINDIRECT 1 /* # of indirect blocks in inode */
#define SFS_NDINDIRECT 0 /* # of 2x indirect blocks in inode */
#define SFS_NTINDIRECT 0 /* # of 3x indirect blocks in inode */
#define SFS_DBPERIDB 128 /* # direct blks per indirect blk */
#define SFS_NAMELEN 60 /* max length of filename */
#define SFS_SUPER_BLOCK 0 /* block the superblock lives in */
#define SFS_FREEMAP_START 2 /* 1st block of the freemap */
#define SFS_NOINO 0 /* inode # for free dir entry */
#define SFS_ROOTDIR_INO 1 /* loc'n of the root dir inode */
/* Number of bits in a block */
#define SFS_BITSPERBLOCK (SFS_BLOCKSIZE * CHAR_BIT)
/* Utility macro */
#define SFS_ROUNDUP(a,b) ((((a)+(b)-1)/(b))*b)
/* Size of free block bitmap (in bits) */
#define SFS_FREEMAPBITS(nblocks) SFS_ROUNDUP(nblocks, SFS_BITSPERBLOCK)
/* Size of free block bitmap (in blocks) */
#define SFS_FREEMAPBLOCKS(nblocks) (SFS_FREEMAPBITS(nblocks)/SFS_BITSPERBLOCK)
/* File types for sfi_type */
#define SFS_TYPE_INVAL 0 /* Should not appear on disk */
#define SFS_TYPE_FILE 1
#define SFS_TYPE_DIR 2
/*
* On-disk superblock
*/
struct sfs_superblock {
uint32_t sb_magic; /* Magic number; should be SFS_MAGIC */
uint32_t sb_nblocks; /* Number of blocks in fs */
char sb_volname[SFS_VOLNAME_SIZE]; /* Name of this volume */
uint32_t reserved[118]; /* unused, set to 0 */
};
/*
* On-disk inode
*/
struct sfs_dinode {
uint32_t sfi_size; /* Size of this file (bytes) */
uint16_t sfi_type; /* One of SFS_TYPE_* above */
uint16_t sfi_linkcount; /* # hard links to this file */
uint32_t sfi_direct[SFS_NDIRECT]; /* Direct blocks */
uint32_t sfi_indirect; /* Indirect block */
uint32_t sfi_waste[128-3-SFS_NDIRECT]; /* unused space, set to 0 */
};
/*
* On-disk directory entry
*/
struct sfs_direntry {
uint32_t sfd_ino; /* Inode number */
char sfd_name[SFS_NAMELEN]; /* Filename */
};
#endif /* _KERN_SFS_H_ */

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/*
* Copyright (c) 1982, 1986, 1989, 1991, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* 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 REGENTS 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 REGENTS 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.
*
* @(#)signal.h 8.4 (Berkeley) 5/4/95
*/
#ifndef _KERN_SIGNAL_H_
#define _KERN_SIGNAL_H_
/*
* Machine-independent definitions for signals.
*/
/*
* The signals.
*
* The values of many of these are "well known", particularly 1, 9,
* 10, and 11.
*
* Note that Unix signals are a semantic cesspool; many have special
* properties or are supposed to interact with the system in special
* ways. It is gross.
*/
#define SIGHUP 1 /* Hangup */
#define SIGINT 2 /* Interrupt (^C) */
#define SIGQUIT 3 /* Quit (typically ^\) */
#define SIGILL 4 /* Illegal instruction */
#define SIGTRAP 5 /* Breakpoint trap */
#define SIGABRT 6 /* abort() call */
#define SIGEMT 7 /* Emulator trap */
#define SIGFPE 8 /* Floating point exception */
#define SIGKILL 9 /* Hard kill (unblockable) */
#define SIGBUS 10 /* Bus error, typically bad pointer alignment*/
#define SIGSEGV 11 /* Segmentation fault */
#define SIGSYS 12 /* Bad system call */
#define SIGPIPE 13 /* Broken pipe */
#define SIGALRM 14 /* alarm() expired */
#define SIGTERM 15 /* Termination requested (default kill) */
#define SIGURG 16 /* Urgent data on socket */
#define SIGSTOP 17 /* Hard process stop (unblockable) */
#define SIGTSTP 18 /* Terminal stop (^Z) */
#define SIGCONT 19 /* Time to continue after stop */
#define SIGCHLD 20 /* Child process exited */
#define SIGTTIN 21 /* Stop on tty read while in background */
#define SIGTTOU 22 /* Stop on tty write while in background */
#define SIGIO 23 /* Nonblocking or async I/O is now ready */
#define SIGXCPU 24 /* CPU time resource limit exceeded */
#define SIGXFSZ 25 /* File size resource limit exceeded */
#define SIGVTALRM 26 /* Like SIGALRM but in virtual time */
#define SIGPROF 27 /* Profiling timer */
#define SIGWINCH 28 /* Window size change on tty */
#define SIGINFO 29 /* Information request (typically ^T) */
#define SIGUSR1 20 /* Application-defined */
#define SIGUSR2 31 /* Application-defined */
#define SIGPWR 32 /* Power failure */
#define _NSIG 32
/* Type for a set of signals; used by e.g. sigprocmask(). */
typedef __u32 sigset_t;
/* flags for sigaction.sa_flags */
#define SA_ONSTACK 1 /* Use sigaltstack() stack. */
#define SA_RESTART 2 /* Restart syscall instead of interrupting. */
#define SA_RESETHAND 4 /* Clear handler after one usage. */
/* codes for sigprocmask() */
#define SIG_BLOCK 1 /* Block selected signals. */
#define SIG_UNBLOCK 2 /* Unblock selected signals. */
#define SIG_SETMASK 3 /* Set mask to the selected signals. */
/* Type for a signal handler function. */
typedef void (*__sigfunc)(int);
/* Magic values for signal handlers. */
#define SIG_DFL ((__sigfunc) 0) /* Default behavior. */
#define SIG_IGN ((__sigfunc) 1) /* Ignore the signal. */
/*
* Struct for sigaction().
*/
struct sigaction {
__sigfunc sa_handler;
sigset_t sa_mask;
unsigned sa_flags;
};
/*
* Struct for sigaltstack().
* (not very important)
*/
struct sigaltstack {
void *ss_sp;
size_t ss_size;
unsigned ss_flags;
};
#endif /* _KERN_SIGNAL_H_ */

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/*
* Copyright (c) 2004, 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 _KERN_SOCKET_H_
#define _KERN_SOCKET_H_
/*
* Socket-related definitions, for <sys/socket.h>.
*/
/*
* Important
*/
/* Socket types that we (might) support. */
#define SOCK_STREAM 1 /* stream */
#define SOCK_DGRAM 2 /* packet */
#define SOCK_RAW 3 /* raw packet */
/* Address families that we (might) support. */
#define AF_UNSPEC 0
#define AF_UNIX 1
#define AF_INET 2
#define AF_INET6 3
/* Protocol families. Pointless layer of indirection in the standard API. */
#define PF_UNSPEC AF_UNSPEC
#define PF_UNIX AF_UNIX
#define PF_INET AF_INET
#define PF_INET6 AF_INET6
/*
* Socket address structures. Socket addresses are polymorphic, and
* the polymorphism is handled by casting pointers. It's fairly gross,
* but way too deeply standardized to ever change.
*
* Each address family defines a sockaddr type (sockaddr_un,
* sockaddr_in, etc.) struct sockaddr is the common prefix of all
* these, and struct sockaddr_storage is defined to be large enough to
* hold any of them.
*
* The complex padding in sockaddr_storage forces it to be aligned,
* which wouldn't happen if it were just a char array.
*/
struct sockaddr {
__u8 sa_len;
__u8 sa_family;
};
#define _SS_SIZE 128
struct sockaddr_storage {
__u8 ss_len;
__u8 ss_family;
__u8 __ss_pad1;
__u8 __ss_pad2;
__u32 __ss_pad3;
__u64 __ss_pad4;
char __ss_pad5[_SS_SIZE - sizeof(__u64) - sizeof(__u32) - 4*sizeof(__u8)];
};
/*
* Not very important.
*/
/*
* msghdr structures for sendmsg() and recvmsg().
*/
struct msghdr {
void *msg_name; /* really sockaddr; address, or null */
socklen_t msg_namelen; /* size of msg_name object, or 0 */
struct iovec *msg_iov; /* I/O buffers */
int msg_iovlen; /* number of iovecs */
void *msg_control; /* auxiliary data area, or null */
socklen_t msg_controllen; /* size of msg_control area */
int msg_flags; /* flags */
};
struct cmsghdr {
socklen_t cmsg_len; /* length of control data, including header */
int cmsg_level; /* protocol layer item originates from */
int cmsg_type; /* protocol-specific message type */
/* char cmsg_data[];*/ /* data follows the header */
};
#endif /* _KERN_SOCKET_H_ */

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/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 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 _KERN_STAT_H_
#define _KERN_STAT_H_
/*
* The stat structure, for returning file information via stat(),
* fstat(), and lstat().
*
* Fields corresponding to things you aren't implementing should be
* set to zero.
*
* The file types are in kern/stattypes.h.
*/
struct stat {
/* Essential fields */
off_t st_size; /* file size in bytes */
mode_t st_mode; /* file type and protection mode */
nlink_t st_nlink; /* number of hard links */
blkcnt_t st_blocks; /* number of blocks file is using */
/* Identity */
dev_t st_dev; /* device object lives on */
ino_t st_ino; /* inode number (serial number) of object */
dev_t st_rdev; /* device object is (if a device) */
/* Timestamps */
time_t st_atime; /* last access time: seconds */
time_t st_ctime; /* inode change time: seconds */
time_t st_mtime; /* modification time: seconds */
__u32 st_atimensec; /* last access time: nanoseconds */
__u32 st_ctimensec; /* inode change time: nanoseconds */
__u32 st_mtimensec; /* modification time: nanoseconds */
/* Permissions (also st_mode) */
uid_t st_uid; /* owner */
gid_t st_gid; /* group */
/* Other */
__u32 st_gen; /* file generation number (root only) */
blksize_t st_blksize; /* recommended I/O block size */
};
#endif /* _KERN_STAT_H_ */

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/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 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 _KERN_STATTYPES_H_
#define _KERN_STATTYPES_H_
/*
* Further supporting material for stat(), fstat(), and lstat().
*
* File types for st_mode. (The permissions are the low 12 bits.)
*
* These are also used, shifted right by those 12 bits, in struct
* dirent in libc, which is why they get their own file.
*
* Non-underscore versions of the names can be gotten from <stat.h>
* (kernel) or <sys/stat.h> (userland).
*/
#define _S_IFMT 070000 /* mask for type of file */
#define _S_IFREG 010000 /* ordinary regular file */
#define _S_IFDIR 020000 /* directory */
#define _S_IFLNK 030000 /* symbolic link */
#define _S_IFIFO 040000 /* pipe or named pipe */
#define _S_IFSOCK 050000 /* socket */
#define _S_IFCHR 060000 /* character device */
#define _S_IFBLK 070000 /* block device */
#endif /* _KERN_STATTYPES_H_ */

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/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 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 _KERN_SYSCALL_H_
#define _KERN_SYSCALL_H_
/*
* System call numbers.
*
* To foster compatibility, this file contains a number for every
* more-or-less standard Unix system call that someone might
* conceivably implement on OS/161. The commented-out ones are ones
* we're pretty sure you won't be implementing. The others, you might
* or might not. Check your own course materials to find out what's
* specifically required of you.
*
* Caution: this file is parsed by a shell script to generate the assembly
* language system call stubs. Don't add weird stuff between the markers.
*/
/*CALLBEGIN*/
// -- Process-related --
#define SYS_fork 0
#define SYS_vfork 1
#define SYS_execv 2
#define SYS__exit 3
#define SYS_waitpid 4
#define SYS_getpid 5
#define SYS_getppid 6
// (virtual memory)
#define SYS_sbrk 7
#define SYS_mmap 8
#define SYS_munmap 9
#define SYS_mprotect 10
//#define SYS_madvise 11
//#define SYS_mincore 12
//#define SYS_mlock 13
//#define SYS_munlock 14
//#define SYS_munlockall 15
//#define SYS_minherit 16
// (security/credentials)
#define SYS_umask 17
#define SYS_issetugid 18
#define SYS_getresuid 19
#define SYS_setresuid 20
#define SYS_getresgid 21
#define SYS_setresgid 22
#define SYS_getgroups 23
#define SYS_setgroups 24
#define SYS___getlogin 25
#define SYS___setlogin 26
// (signals)
#define SYS_kill 27
#define SYS_sigaction 28
#define SYS_sigpending 29
#define SYS_sigprocmask 30
#define SYS_sigsuspend 31
#define SYS_sigreturn 32
//#define SYS_sigaltstack 33
// (resource tracking and usage)
//#define SYS_wait4 34
//#define SYS_getrusage 35
// (resource limits)
//#define SYS_getrlimit 36
//#define SYS_setrlimit 37
// (process priority control)
//#define SYS_getpriority 38
//#define SYS_setpriority 39
// (process groups, sessions, and job control)
//#define SYS_getpgid 40
//#define SYS_setpgid 41
//#define SYS_getsid 42
//#define SYS_setsid 43
// (userlevel debugging)
//#define SYS_ptrace 44
// -- File-handle-related --
#define SYS_open 45
#define SYS_pipe 46
#define SYS_dup 47
#define SYS_dup2 48
#define SYS_close 49
#define SYS_read 50
#define SYS_pread 51
//#define SYS_readv 52
//#define SYS_preadv 53
#define SYS_getdirentry 54
#define SYS_write 55
#define SYS_pwrite 56
//#define SYS_writev 57
//#define SYS_pwritev 58
#define SYS_lseek 59
#define SYS_flock 60
#define SYS_ftruncate 61
#define SYS_fsync 62
#define SYS_fcntl 63
#define SYS_ioctl 64
#define SYS_select 65
#define SYS_poll 66
// -- Pathname-related --
#define SYS_link 67
#define SYS_remove 68
#define SYS_mkdir 69
#define SYS_rmdir 70
#define SYS_mkfifo 71
#define SYS_rename 72
#define SYS_access 73
// (current directory)
#define SYS_chdir 74
#define SYS_fchdir 75
#define SYS___getcwd 76
// (symbolic links)
#define SYS_symlink 77
#define SYS_readlink 78
// (mount)
#define SYS_mount 79
#define SYS_unmount 80
// -- Any-file-related --
#define SYS_stat 81
#define SYS_fstat 82
#define SYS_lstat 83
// (timestamps)
#define SYS_utimes 84
#define SYS_futimes 85
#define SYS_lutimes 86
// (security/permissions)
#define SYS_chmod 87
#define SYS_chown 88
#define SYS_fchmod 89
#define SYS_fchown 90
#define SYS_lchmod 91
#define SYS_lchown 92
// (file system info)
//#define SYS_statfs 93
//#define SYS_fstatfs 94
//#define SYS_getfsstat 95
// (POSIX dynamic system limits stuff)
//#define SYS_pathconf 96
//#define SYS_fpathconf 97
// -- Sockets and networking --
#define SYS_socket 98
#define SYS_bind 99
#define SYS_connect 100
#define SYS_listen 101
#define SYS_accept 102
//#define SYS_socketpair 103
#define SYS_shutdown 104
#define SYS_getsockname 105
#define SYS_getpeername 106
#define SYS_getsockopt 107
#define SYS_setsockopt 108
//#define SYS_recvfrom 109
//#define SYS_sendto 110
//#define SYS_recvmsg 111
//#define SYS_sendmsg 112
// -- Time-related --
#define SYS___time 113
#define SYS___settime 114
#define SYS_nanosleep 115
//#define SYS_getitimer 116
//#define SYS_setitimer 117
// -- Other --
#define SYS_sync 118
#define SYS_reboot 119
//#define SYS___sysctl 120
/*CALLEND*/
#endif /* _KERN_SYSCALL_H_ */

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/*
* Copyright (c) 2004, 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 _KERN_TIME_H_
#define _KERN_TIME_H_
/*
* Time-related definitions, for <sys/time.h> and others.
*/
/*
* Time with fractional seconds. Important. Unfortunately, to be
* compatible, we need both timeval and timespec.
*/
struct timeval {
__time_t tv_sec; /* seconds */
__i32 tv_usec; /* microseconds */
};
struct timespec {
__time_t tv_sec; /* seconds */
__i32 tv_nsec; /* nanoseconds */
};
/*
* Bits for interval timers. Obscure and not really that important.
*/
/* codes for the various timers */
#define ITIMER_REAL 0 /* Real (wall-clock) time. */
#define ITIMER_VIRTUAL 1 /* Virtual (when process is executing) time. */
#define ITIMER_PROF 2 /* For execution profiling. */
/* structure for setitimer/getitimer */
struct itimerval {
struct timeval it_interval; /* Time to reload after expiry. */
struct timeval it_value; /* Time to count. */
};
#endif /* _KERN_TIME_H_ */

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/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 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 _KERN_TYPES_H_
#define _KERN_TYPES_H_
/* Get machine-dependent types. */
#include <kern/machine/types.h>
/*
* Machine-independent types visible to user level.
*
* Define everything with leading underscores to avoid polluting the C
* namespace for applications.
*
* The C standard (and additionally the POSIX standard) define rules
* for what families of symbol names are allowed to be used by
* application programmers, and what families of symbol names can be
* defined by various standard header files. The C library needs to
* conform to those rules, to the extent reasonably practical, to make
* sure that application code compiles and behaves as intended.
*
* Many of the C library's headers need to use one or more of these
* types in places where the "real" name of the type cannot be
* exposed, or expose the names of some of these types and not others.
* (For example, <string.h> is supposed to define size_t, but is not
* supposed to also define e.g. pid_t.)
*
* For this reason we define everything with two underscores in front
* of it; in C such symbol names are reserved for the implementation,
* which we are, so this file can be included anywhere in any libc
* header without causing namespace problems. The "real" type names
* are defined with an additional layer of typedefs; this happens for
* the kernel in <types.h> and for userland in (mostly) <sys/types.h>
* and also various other places as per relevant standards.
*/
typedef __u32 __blkcnt_t; /* Count of blocks */
typedef __u32 __blksize_t; /* Size of an I/O block */
typedef __u64 __counter_t; /* Event counter */
typedef __u32 __daddr_t; /* Disk block number */
typedef __u32 __dev_t; /* Hardware device ID */
typedef __u32 __fsid_t; /* Filesystem ID */
typedef __i32 __gid_t; /* Group ID */
typedef __u32 __in_addr_t; /* Internet address */
typedef __u32 __in_port_t; /* Internet port number */
typedef __u32 __ino_t; /* Inode number */
typedef __u32 __mode_t; /* File access mode */
typedef __u16 __nlink_t; /* Number of links (intentionally only 16 bits) */
typedef __i64 __off_t; /* Offset within file */
typedef __i32 __pid_t; /* Process ID */
typedef __u64 __rlim_t; /* Resource limit quantity */
typedef __u8 __sa_family_t;/* Socket address family */
typedef __i64 __time_t; /* Time in seconds */
typedef __i32 __uid_t; /* User ID */
typedef int __nfds_t; /* Number of file handles */
typedef int __socklen_t; /* Socket-related length */
/* See note in <stdarg.h> */
#ifdef __GNUC__
typedef __builtin_va_list __va_list;
#endif
#endif /* _KERN_TYPES_H_ */

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/*
* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 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 _KERN_UNISTD_H_
#define _KERN_UNISTD_H_
/* Constants for read/write/etc: special file handles */
#define STDIN_FILENO 0 /* Standard input */
#define STDOUT_FILENO 1 /* Standard output */
#define STDERR_FILENO 2 /* Standard error */
#endif /* _KERN_UNISTD_H_ */

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/*
* Copyright (c) 2003, 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 _KERN_WAIT_H_
#define _KERN_WAIT_H_
/*
* Definitions for wait().
*/
/* Flags for waitpid() and equivalent. */
#define WNOHANG 1 /* Nonblocking. */
#define WUNTRACED 2 /* Report stopping as well as exiting processes. */
/* Special "pids" to wait for. */
#define WAIT_ANY (-1) /* Any child process. */
#define WAIT_MYPGRP 0 /* Any process in the same process group. */
/*
* Result encoding.
*
* The lowest two bits say what happened; the rest encodes up to 30
* bits of exit code. Note that the traditional Unix encoding, which
* is different, wastes most of the bits and can only transmit 8 bits
* of exit code...
*/
#define _WWHAT(x) ((x)&3) /* lower two bits say what happened */
#define _WVAL(x) ((x)>>2) /* the rest is the value */
#define _MKWVAL(x) ((x)<<2) /* encode a value */
/* Four things can happen... */
#define __WEXITED 0 /* Process exited by calling _exit(). */
#define __WSIGNALED 1 /* Process received a fatal signal. */
#define __WCORED 2 /* Process dumped core on a fatal signal. */
#define __WSTOPPED 3 /* Process stopped (and didn't exit). */
/* Test macros, used by applications. */
#define WIFEXITED(x) (_WWHAT(x)==__WEXITED)
#define WIFSIGNALED(x) (_WWHAT(x)==__WSIGNALED || _WWHAT(x)==__WCORED)
#define WIFSTOPPED(x) (_WWHAT(x)==__WSTOPPED)
#define WEXITSTATUS(x) (_WVAL(x))
#define WTERMSIG(x) (_WVAL(x))
#define WSTOPSIG(x) (_WVAL(x))
#define WCOREDUMP(x) (_WWHAT(x)==__WCORED)
/* Encoding macros, used by the kernel to generate the wait result. */
#define _MKWAIT_EXIT(x) (_MKWVAL(x)|__WEXITED)
#define _MKWAIT_SIG(x) (_MKWVAL(x)|__WSIGNALED)
#define _MKWAIT_CORE(x) (_MKWVAL(x)|__WCORED)
#define _MKWAIT_STOP(x) (_MKWVAL(x)|__WSTOPPED)
#endif /* _KERN_WAIT_H_ */