DIRECTORY Basics USING [RawChars];

UnixTypes: CEDAR DEFINITIONS
~ {

bitsPerUnitMustBeEight: CARD[8..8] ~ BITS[UNIT];

CHARPtr: TYPE ~ POINTER TO Basics.RawChars ฌ NIL;

INTPtr: TYPE ~ POINTER TO INT;

Flag: TYPE ~ MACHINE DEPENDENT {false(0), true(1)};

UID: TYPE ~ INT16;

GID: TYPE ~ INT16;

PIDPtr: TYPE ~ POINTER TO PID;
PID: TYPE ~ INT;

PGRPPtr: TYPE ~ POINTER TO PGRP;
PGRP: TYPE ~ INT;

Time: TYPE ~ INT32;

Dev: TYPE ~ INT16;

Offset: TYPE ~ INT32;

INum: TYPE ~ CARD32;

RES: TYPE ~ SysCallResult;
SysCallResult: TYPE ~ MACHINE DEPENDENT {
success(0),
failure(CARD32.LAST)
};

RawVM: TYPE ~ POINTER;

GIDsPtr: TYPE ~ POINTER TO GIDs;
GIDs: TYPE ~ RECORD [
gids: PACKED SEQUENCE COMPUTED CARD OF GID
];
FD: TYPE ~ FileDescriptor;
FileDescriptor: TYPE ~ MACHINE DEPENDENT {
pseudostdin(0),
pseudostdout(1),
pseudostderr(2),
stdtrc(LOOPHOLE[-4]),
stdout(LOOPHOLE[-3]),
stdin(LOOPHOLE[-2]),
error(CARD32.LAST)
};

FileFlags: TYPE ~ MACHINE DEPENDENT RECORD [
fill0: [0..3777777B] ฌ 0,
excl: Flag ฌ false,	-- error if already created
trunc: Flag ฌ false,	-- truncate to zero length
creat: Flag ฌ false,	-- create if nonexistant [sic]
fill1: [0..3] ฌ 0,
async: Flag ฌ false,	-- signal pgrp when data ready
fill2: [0..3] ฌ 0,
append: Flag ฌ false,	-- append on each write
ndelay: Flag ฌ false,	-- non-blocking reads
access: MACHINE DEPENDENT {RDONLY(0), WRONLY(1), RDWR(2), (3)}
];

LockOp: TYPE ~ MACHINE DEPENDENT RECORD [
fill: [0..0fffffffH] ฌ 0,
un: Flag ฌ false,	-- unlock
nb: Flag ฌ false,	-- don't block when locking
ex: Flag ฌ false,	-- exclusive lock
sh: Flag ฌ false	-- shared lock
];

Whence: TYPE ~ MACHINE DEPENDENT {
set(0),	-- absolute offset
incr(1),	-- relative to current offset
xtnd(2),	-- relative to end of file
(CARD32.LAST)
};
Protections: TYPE ~ MACHINE DEPENDENT RECORD [
fill: PACKED ARRAY [0..BITS[WORD]-4) OF BOOL ฌ ALL[FALSE],
user: BOOL ฌ FALSE, -- kernel only
exec: BOOL ฌ FALSE,
write: BOOL ฌ FALSE,
read: BOOL ฌ FALSE
];

MMapFlags: TYPE ~ MACHINE DEPENDENT RECORD [
fill: PACKED ARRAY [0..BITS[WORD]-8) OF BOOL ฌ ALL[FALSE],
inherit: BOOL ฌ FALSE,
noreserve: BOOL ฌ FALSE,
rename: BOOL ฌ FALSE,
fixed: BOOL ฌ TRUE,
pad: PACKED ARRAY [0..1) OF BOOL ฌ ALL[FALSE],
private: BOOL ฌ FALSE,
shared: BOOL ฌ TRUE
];

MSyncFlags: TYPE ~ MACHINE DEPENDENT RECORD [
fill: PACKED ARRAY [0..BITS[WORD]-2) OF BOOL ฌ ALL[FALSE],
invalidate: BOOL ฌ FALSE, -- Invalidate mappings
async: BOOL ฌ FALSE -- Return immediately
];
PollFD: TYPE ~ WORD16 MACHINE DEPENDENT RECORD [
fd(0): FileDescriptor,
events(2): PollEvents,
revents(3): PollEvents
];

PollEvents: TYPE ~ WORD16 MACHINE DEPENDENT RECORD [
spare (0: 0..9): PACKED ARRAY[0..10) OF Flag ฌ ALL[false],
nval (0: 10..10): Flag ฌ false,	-- invalid pollfd entry
hup (0: 11..11): Flag ฌ false,	-- fd has been hung up on 
err (0: 12..12): Flag ฌ false,  	-- fd has error condition
out (0: 13..13): Flag ฌ false,  	-- fd is writeable (won't block)
pri (0: 14..14): Flag ฌ false,  	-- priority info at fd
in (0:15..15): Flag ฌ false  	-- fd is readable
];
IpcPerm: TYPE = MACHINE DEPENDENT RECORD [--common IPC access structure
uid: UID,	-- (owner's) user id
gid: GID,	-- (owner's) group id
cuid: UID,	-- creator's user id
cgid: GID,	-- creator's group id
mode: CARD16,     	-- access modes; r/w permission; (set op sets only low 9 bits)
seq: CARD16,     	-- slot usage sequence number
key: CARD     	-- key
];

ShmIdDs: TYPE = MACHINE DEPENDENT RECORD [
ipcPerm: IpcPerm, 	-- operation permission struct
segsz: INT,		-- size of segment in bytes
lpid: UID, 	-- process ID of last shmop
cpid: UID, 	-- process ID of creator
nAttch: CARD16, 	-- number of current attaches
unused1:  CARD16,	-- depending on C compiler's padding algorithm !
aTime: Time, 	-- last shmat time
dTime: Time,	-- last shmdt time
cTime: Time,	-- last change time
amp: POINTER      	-- segment anonฌmap pointer
];

SharedMemoryIdentifier: TYPE = RECORD [val: CARD]; 
errorSharedMemoryIdentifier: SharedMemoryIdentifier = [CARD.LAST];

SharedMemoryKey: TYPE = RECORD [val: CARD];
ipcPRIVATE:  SharedMemoryKey = [0]; --private key to create new SharedMemoryIdentifier

ShmGetFlags: TYPE = RECORD [val: CARD];
ipcALLOC:	ShmGetFlags = [0100000B]; -- entry currently allocated
ipcCREAT:	ShmGetFlags = [0001000B]; -- create entry if key doesn't exist
ipcEXCL:   	ShmGetFlags = [0002000B]; -- fail if key exists
allPerms: 	ShmGetFlags = [0000777B]; -- (not in found ipc.h)

IPCCtlCmd: TYPE = RECORD [val: CARD];
ipcRMID: 	IPCCtlCmd = [0]; -- remove identifier
ipcSET: 	IPCCtlCmd = [1]; -- set options
ipcSTAT: 	IPCCtlCmd = [2]; -- get options

ShmAtFlags: TYPE = RECORD [CARD];
shmNoFlags:        	ShmAtFlags = [000000]; 
shmRDOnly:	ShmAtFlags = [010000]; -- attach read-only (else read-write)
shmRnd:     	ShmAtFlags = [020000]; -- round attach address to SHMBA

Signal: TYPE ~ MACHINE DEPENDENT {
SIGHUP(1),		-- hangup
SIGINT(2),		-- interrupt
SIGQUIT(3),		-- quit
SIGILL(4),		-- illegal instruction (not reset when caught)
SIGTRAP(5),		-- trace trap (not reset when caught)
SIGABRT(6),		-- used by abort
SIGEMT(7),		-- EMT instruction
SIGFPE(8),		-- floating point exception
SIGKILL(9),		-- kill (cannot be caught or ignored)
SIGBUS(10),		-- bus error
SIGSEGV(11),	-- segmentation violation
SIGSYS(12),		-- bad argument to system call
SIGPIPE(13),		-- write on a pipe with no one to read it
SIGALRM(14),	-- alarm clock
SIGTERM(15),	-- software termination signal from kill
SIGURG(16),		-- urgent condition on IO channel
SIGSTOP(17),	-- sendable stop signal not from tty
SIGTSTP(18),		-- stop signal from tty
SIGCONT(19),	-- continue a stopped process
SIGCHLD(20),	-- to parent on child stop or exit
SIGTTIN(21),	-- to readers pgrp upon background tty read
SIGTTOU(22),	-- like TTIN for output if (tp->tฌlocal&LTOSTOP)
SIGIO(23),		-- input/output possible signal
SIGXCPU(24),	-- exceeded CPU time limit
SIGXFSZ(25),	-- exceeded file size limit
SIGVTALRM(26),	-- virtual time alarm
SIGPROF(27),	-- profiling time alarm
SIGWINCH(28),	-- window changed
SIGLOST(29),	-- resource lost (eg, record-lock lost)
SIGUSR1(30),	-- user defined signal 1
SIGUSR2(31)		-- user defined signal 2
};
SocketType: TYPE ~ MACHINE DEPENDENT {
stream(1),		-- stream socket
dgram(2),		-- datagram socket
raw(3),		-- raw-protocol interface
rdm(4),		-- reliably-delivered message
seqPacket(5),	-- sequenced packet stream
(CARD16.LAST)
};

AddressFamily: TYPE ~ MACHINE DEPENDENT {
unspec(0),		-- unspecified
unix(1),		-- local to host (pipes, portals)
inet(2),		-- internetwork: UDP, TCP, etc.
impLink(3),		-- arpanet imp addresses
pup(4),		-- pup protocols: e.g. BSP
chaos(5),		-- mit CHAOS protocols
ns(6),		-- XEROX NS protocols
nbs(7),		-- nbs protocols
ecma(8),		-- european computer manufacturers
datakit(9),		-- datakit protocols
ccitt(10),		-- CCITT protocols, X.25 etc.
sna(11),		-- IBM SNA
decNet(12),		-- DECnet
dli(13),		-- Direct data link interface
lat(14),		-- LAT
hyLink(15),		-- NSC Hyperchannel
appleTalk(16),	-- Apple Talk
nit(17),		-- Network Interface Tap
ieee802(18),		-- IEEE 802.2, also ISO 8802
osi(19),		-- umbrella for all families used by OSI (e.g. protosw lookup)
x25(20),		-- CCITT X.25 in particular
osinet(21),		-- AFI = 47, IDI = 4
gosip(22),		-- U.S. Government OSI
(CARD16.LAST)
};

SockAddrPtr: TYPE ~ POINTER TO SockAddr;
SockAddr: TYPE ~ WORD16 MACHINE DEPENDENT RECORD [
family(0): AddressFamily,
data(1): PACKED ARRAY[0..14) OF CHAR -- up to 14 bytes of direct address
];

ProtocolFamily: TYPE ~ MACHINE DEPENDENT { -- same as address families for now
unspec(0),		-- unspecified
unix(1),		-- local to host (pipes, portals)
inet(2),		-- internetwork: UDP, TCP, etc.
impLink(3),		-- arpanet imp addresses
pup(4),		-- pup protocols: e.g. BSP
chaos(5),		-- mit CHAOS protocols
ns(6),		-- XEROX NS protocols
nbs(7),		-- nbs protocols
ecma(8),		-- european computer manufacturers
datakit(9),		-- datakit protocols
ccitt(10),		-- CCITT protocols, X.25 etc.
sna(11),		-- IBM SNA
decNet(12),		-- DECnet
dli(13),		-- Direct data link interface
lat(14),		-- LAT
hyLink(15),		-- NSC Hyperchannel
appleTalk(16),	-- Apple Talk
nit(17),		-- Network Interface Tap
ieee802(18),		-- IEEE 802.2, also ISO 8802
osi(19),		-- umbrella for all families used by OSI (e.g. protosw lookup)
x25(20),		-- CCITT X.25 in particular
osinet(21),		-- AFI = 47, IDI = 4
gosip(22),		-- U.S. Government OSI
(CARD16.LAST)
};

MsgFlags: TYPE ~ MACHINE DEPENDENT RECORD [
spare: [0..01fffffffH] ฌ 0,
dontRoute: Flag ฌ false,	-- send without using routing tables
peek: Flag ฌ false,	-- peek at incoming message
oob: Flag ฌ false	-- process out-of-band data
];

SDHow: TYPE ~ MACHINE DEPENDENT {
noRecv(0),		-- disable receives on the socket
noSend(1),		-- disable sends on the socket
noSendOrRecv(2)	-- disable both sends and receives
};

Fmt: TYPE ~ MACHINE DEPENDENT {
fifo(01B),	-- fifo special
chr(02B),	-- character special
dir(04B),	-- directory
blk(06B),	-- block special
reg(10B),	-- regular file
lnk(12B),	-- symbolic link
sock(14B),	-- socket
(17B)
};
Permission: TYPE ~ MACHINE DEPENDENT RECORD [
read: Flag,
write: Flag,
exec: Flag
];

Mode: TYPE ~ MACHINE DEPENDENT RECORD [
fmt: Fmt ฌ LOOPHOLE[0], -- type of file
suid: Flag ฌ false,	-- set user id on execution
sgid: Flag ฌ false,	-- set group id on execution
svtx: Flag ฌ false,	-- save swapped text even after use
owner: Permission ฌ [false, false, false],
group: Permission ฌ [false, false, false],
others: Permission ฌ [false, false, false]
];

StatPtr: TYPE ~ POINTER TO Stat;
Stat: TYPE ~ MACHINE DEPENDENT RECORD [
dev: Dev,		-- device inode resides on
pad0:  INT16, 
ino: INum,		-- this inode's number
mode: Mode,	-- protection
nlink: INT16,	-- number of hard links to the file
uid: UID,		-- user ID of owner
gid: GID,		-- group ID of owner
rdev: Dev,		-- the device type, for inode that is device
pad1: INT16,
size: CARD32,	-- total size of file, in bytes
atime: Time,		-- file last access time
spare1: INT32, 
mtime: Time,	-- file last modify time
spare2: INT32,
ctime: Time,		-- file last status change time
spare3: INT32,
blksize: CARD32,	-- optimal blocksize for file system i/o ops
blocks: CARD32,	-- actual number of blocks allocated
spare4: ARRAY [0..2) OF INT32
];
StrBufPtr: TYPE ~ POINTER TO StrBuf;
StrBuf: TYPE ~ MACHINE DEPENDENT RECORD [
maxLen: INT,
len: INT,
buf: CHARPtr
];

RSFlags: TYPE = MACHINE DEPENDENT {
none(0), hiPri(1), (CARD32.LAST)
};

GetResult: TYPE = MACHINE DEPENDENT {
success(0), moreCtl(1), moreData(2), moreCtlAndData(3), failure(CARD32.LAST)
}; 

Who: TYPE ~ INT;
children: Who = -1;
self: Who = 0;

RUsage: TYPE ~ RECORD [ 
utime: TimeVal,	-- user time used 
stime: TimeVal,	-- system time used 
maxrss: INT,		-- max resident set size 
ixrss: INT,		-- integral shared memory size 
idrss: INT,		-- integral unshared data 
isrss: INT,		-- integral unshared stack 
minflt: INT,		-- page reclaims 
majflt: INT,		-- page faults 
nswap: INT,		-- swaps 
inblock: INT,		-- block input operations 
oublock: INT,		-- block output operations 
msgsnd: INT,		-- messages sent 
msgrcv: INT,		-- messages received 
nsignals: INT,		-- signals received 
nvcsw: INT,		-- voluntary context switches 
nivcsw: INT		-- involuntary 
];

TimeZonePtr: TYPE ~ POINTER TO TimeZone;
TimeZone: TYPE = MACHINE DEPENDENT RECORD [
minutesWest: INT,
dstTime: INT		-- non-zero == dst applies at this location
];

TimeValPtr: TYPE ~ POINTER TO TimeVal;
TimeVal: TYPE = MACHINE DEPENDENT RECORD [
sec: CARD,		-- seconds since Jan 1, 1970
usec: CARD		-- plus this many microseconds
];

FileTimesPtr: TYPE ~ POINTER TO AccModTimes;
AccModTimes: TYPE ~ MACHINE DEPENDENT RECORD [
accessTime: TimeVal,
modTime: TimeVal
];

IOVecPtr: TYPE ~ POINTER TO IOVec;

IOVec: TYPE ~ MACHINE DEPENDENT RECORD [
base: CHARPtr,
len: INT
];

FileSystemID: TYPE ~ MACHINE DEPENDENT RECORD [
val: ARRAY [0..2) OF CARD32
];

StatFSPtr: TYPE ~ POINTER TO StatFS;
StatFS: TYPE ~ MACHINE DEPENDENT RECORD [
type: CARD32,	-- type of info, zero for now
bsize: CARD32,	-- fundamental file system block size
blocks: CARD32,	-- total blocks in file system
bfree: CARD32,	-- free blocks in file system
bavail: CARD32,	-- free blocks available to non-superuser
files: CARD32,	-- total file nodes in file system
ffree: CARD32,	-- free file nodes in file system
fsid: FileSystemID,	-- file system id
spare: ARRAY [0..7) OF CARD32
];

}.

า
UnixTypes.mesa
Copyright ำ 1988, 1989, 1991, 1992 by Xerox Corporation.  All rights reserved.
Christian Jacobi, January 24, 1991 5:30 pm PST
Demers, November 9, 1988 5:02:04 pm PST
Carl Hauser, November 22, 1988 5:22:21 pm PST
Michael Plass, August 12, 1991 5:21 pm PDT
Types and structures from <sys/types.h> and from whole cloth.
there is no guarantee that the chars pointed to will be word aligned
Enumerations and structures from <sys/file.h> and its included header files.
flags argument for open.
op argument for FLock.
whence argument to lseek.
Described types found in <sys/mmap.h>.

Structures and flags from <poll.h>.
Non-testable poll events (may not be specified in events field, but may be returned in revents field).
Testable select events
Types to access the Unix shared memory features: <sys/ipc.h> and <sys/shm.h>
--shared memory descriptor structure
--low order 9 bits for permission stuff
Constants from <sys/signal.h>
Types describing sockets
Structures and flags from <sys/stat.h>.

Structure filled in by fstat.
Structures and flags for GetMsg/PutMsg
Structures for GetRUsage
Unix time structures from <sys/time.h>.
IOVec type for ReadV/WriteV
Structure declarations from <sys/vfs.h>.
Michael Plass, August 12, 1991 5:17:16 pm PDT: Merged UnixFile, UnixPoll, UnixSignal, UnixSocket, UnixStat, UnixStrOpts, UnixTime, UnixUIO, UnixVFS into this interface; some types needed to be renamed to disambiguate: UnixFile.Flags => FileFlags, UnixStrOpts.Flags => RSFlags
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