OSX System Calls
The sys package, when compiled for OSX, contained an interface to the
OSX system calls. At the moment, this list is fairly incomplete. It is
missing a large number of data structures, and is not wrapping a large number
of useful calls.
Summary
Overall, this documentation will not attempt to summarize the full behavior of the system calls, but will instead attempt to highlight where system calls diverge from the libc interfaces, which are documented in section 2 of the system manpages.
The most notable divergence is that instead of returning -1 and putting an
error code in errno, Myrddin's interface to the system call returns
-errno directly from the functions. The kernel returns the error code
with the overflow flag set in the CPU, and the system call wrappers check
this and convert the return value to a negative error code.
The other notable divergence is that short zero terminated strings strings
such as file names are wrapped up as a byte[:], but are generally converted
to strings on the stack before being passed to the kernel. Long buffers that
are exposed to C as a char* buf, size_t len pair are exposed to Myrddin code
as simply accepting a byte[:].
There are a couple of symbols that aren't actually system calls, such as the clock_gettime functions. These are faked with gettimeofday for portability.
Exported Symbols
pkg sys =
type scno = int64 /* syscall */
type fdopt = int64 /* fd options */
type fd = int32 /* fd */
type pid = int64 /* pid */
type mprot = int64 /* memory protection */
type mopt = int64 /* memory mapping options */
type socktype = int64 /* socket type */
type sockproto = int64 /* socket protocol */
type sockfam = uint8 /* socket family */
type filemode = uint16 /* file permission bits */
type kflags = uint16 /* kqueue flags */
type whence = int64
type fcntlcmd = int64
type timespec = struct
sec : uint64
nsec : uint32
;;
type timeval = struct
sec : uint64
usec : uint32
;;
type timezone = struct
minwest : int32 /* of greenwich */
dsttime : int32 /* nonzero if DST applies */
;;
type clock = union
`Clockrealtime
`Clockmonotonic
;;
type waitstatus = union
`Waitexit int32
`Waitsig int32
`Waitstop int32
`Waitfail int32
;;
type statbuf = struct
dev : int32
mode : filemode
nlink : uint16
ino : uint64
uid : uint32
gid : uint32
rdev : uint32
atime : timespec
mtime : timespec
ctime : timespec
birthtimespec : timespec
size : off
blocks : int64
blksize : int32
flags : uint32
gen : uint32
_spare : uint32
_qspare : uint64[2]
;;
type rusage = struct
utime : timeval /* user time */
stime : timeval /* system time */
_opaque : uint64[14] /* padding (darwin-specific data) */
;;
type utsname = struct
system : byte[256]
node : byte[256]
release : byte[256]
version : byte[256]
machine : byte[256]
;;
type sockaddr = struct
len : byte
fam : sockfam
data : byte[14] /* what is the *actual* length? */
;;
type sockaddr_in = struct
len : byte
fam : sockfam
port : uint16
addr : byte[4]
zero : byte[8]
;;
type sockaddr_in6 = struct
len : byte
fam : sockfam
port : uint16
flowinf : uint32
addr : byte[16]
scope : uint32
;;
type sockaddr_storage = struct
len : byte
fam : sockfam
__pad1 : byte[6]
__align : uint64
__pad2 : byte[112]
;;
type dirent64 = struct
ino : uint64
seekoff : uint64 /* seek offset (optional, used by servers) */
reclen : uint16 /* length of this record */
namlen : uint16 /* length of string in d_name */
typeid : uint8 /* file type, see below */
name : byte[...]
;;
type kevent = struct
ident : intptr /* identifier for this event */
filter : int16 /* filter for event */
flags : uint16 /* general flags */
fflags : uint32 /* filter-specific flags */
data : intptr /* filter-specific data */
udata : byte# /* opaque user data identifier */
;;
type kevent64 = struct
ident : uint64 /* identifier for this event */
filter : int16 /* filter for event */
flags : kflags /* general flags */
fflags : uint32 /* filter-specific flags */
data : int64 /* filter-specific data */
udata : uint64 /* opaque user data identifier */
ext : uint64[2] /* filter-specific extensions */
;;
const Seekset : whence = 0
const Seekcur : whence = 1
const Seekend : whence = 2
/* system specific constants */
const Maxpathlen : size = 1024
/* fcntl constants */
const Fdupfd : fcntlcmd = 0 /* duplicate file descriptor */
const Fgetfd : fcntlcmd = 1 /* get file descriptor flags */
const Fsetfd : fcntlcmd = 2 /* set file descriptor flags */
const Fgetfl : fcntlcmd = 3 /* get file status flags */
const Fsetfl : fcntlcmd = 4 /* set file status flags */
const Fgetown : fcntlcmd = 5 /* get SIGIO/SIGURG proc/pgrp */
const Fsetown : fcntlcmd = 6 /* set SIGIO/SIGURG proc/pgrp */
const Fgetlk : fcntlcmd = 7 /* get record locking information */
const Fsetlk : fcntlcmd = 8 /* set record locking information */
const Fsetlkw : fcntlcmd = 9 /* F_SETLK; wait if blocked */
const Fsetlkwtimeout : fcntlcmd = 10 /* F_SETLK; wait if blocked, return on timeout */
const Fflush_data : fcntlcmd = 40
const Fchkclean : fcntlcmd = 41 /* Used for regression test */
const Fpreallocate : fcntlcmd = 42 /* Preallocate storage */
const Fsetsize : fcntlcmd = 43 /* Truncate a file without zeroing space */
const Frdadvise : fcntlcmd = 44 /* Issue an advisory read async with no copy to user */
const Frdahead : fcntlcmd = 45 /* turn read ahead off/on for this fd */
/* 46,47 used to be F_READBOOTSTRAP and F_WRITEBOOTSTRAP */
const Fnocache : fcntlcmd = 48 /* turn data caching off/on for this fd */
const Flog2phys : fcntlcmd = 49 /* file offset to device offset */
const Fgetpath : fcntlcmd = 50 /* return the full path of the fd */
const Ffullfsync : fcntlcmd = 51 /* fsync + ask the drive to flush to the media */
const Fpathpkg_check : fcntlcmd = 52 /* find which component (if any) is a package */
const Ffreeze_fs : fcntlcmd = 53 /* "freeze" all fs operations */
const Fthaw_fs : fcntlcmd = 54 /* "thaw" all fs operations */
const Fglobal_nocache : fcntlcmd = 55 /* turn data caching off/on (globally) for this file */
const Faddsigs : fcntlcmd = 59 /* add detached signatures */
const Faddfilesigs : fcntlcmd = 61 /* add signature from same file (used by dyld for shared libs) */
const Fgetprotclass : fcntlcmd = 63 /* Get the protection class of a file from the EA, returns int */
const Fsetprotclass : fcntlcmd = 64 /* Set the protection class of a file for the EA, requires int */
const Flog2phys_ext : fcntlcmd = 65 /* file offset to device offset, extended */
const Fgetlkpid : fcntlcmd = 66 /* get record locking information, per-process */
/* See F_DUPFD_CLOEXEC below for 67 */
const Fsetbacktore : fcntlcmd = 70 /* Mark the file as being the backing store for another filesystem */
const Fgetpath_mtminfo : fcntlcmd = 71 /* return the full path of the FD, but error in specific mtmd circumstances */
/* 72 is free. It used to be F_GETENCRYPTEDDATA, which is now removed. */
const Fsetnosigpipe : fcntlcmd = 73 /* No SIGPIPE generated on EPIPE */
const Fgetnosigpipe : fcntlcmd = 74 /* Status of SIGPIPE for this fd */
/* kqueue events */
const Kevadd : kflags = 0x0001 /* add event to kq (implies enable) */
const Kevdelete : kflags = 0x0002 /* delete event from kq */
const Kevenable : kflags = 0x0004 /* enable event */
const Kevdisable : kflags = 0x0008 /* disable event (not reported) */
const Kevreceipt : kflags = 0x0040 /* force EV_ERROR on success, data == 0 */
/* kqueue flags */
const Kevoneshot : kflags = 0x0010 /* only report one occurrence */
const Kevclear : kflags = 0x0020 /* clear event state after reporting */
const Kevdispatch : kflags = 0x0080 /* disable event after reporting */
const Kevsysflags : kflags = 0xf000 /* reserved by system */
const Kevflag0 : kflags = 0x1000 /* filter-specific flag */
const Kevflag1 : kflags = 0x2000 /* filter-specific flag */
/* kqueue returned values */
const Keveof : kflags = 0x8000 /* eof detected */
const Keverror : kflags = 0x4000 /* error, data contains errno */
/* open options */
const Ordonly : fdopt = 0x0
const Owronly : fdopt = 0x1
const Ordwr : fdopt = 0x2
const Ondelay : fdopt = 0x4
const Oappend : fdopt = 0x8
const Ocreat : fdopt = 0x200
const Onofollow : fdopt = 0x100
const Otrunc : fdopt = 0x400
const Odir : fdopt = 0x100000
/* stat modes */
const Sifmt : filemode = 0xf000
const Sififo : filemode = 0x1000
const Sifchr : filemode = 0x2000
const Sifdir : filemode = 0x4000
const Sifblk : filemode = 0x6000
const Sifreg : filemode = 0x8000
const Siflnk : filemode = 0xa000
const Sifsock : filemode = 0xc000
/* mmap protection */
const Mprotnone : mprot = 0x0
const Mprotrd : mprot = 0x1
const Mprotwr : mprot = 0x2
const Mprotexec : mprot = 0x4
const Mprotrw : mprot = 0x3
/* mmap options */
const Mshared : mopt = 0x1
const Mpriv : mopt = 0x2
const Mfixed : mopt = 0x10
const Mfile : mopt = 0x0
const Manon : mopt = 0x1000
/* socket families. INCOMPLETE. */
const Afunspec : sockfam = 0
const Afunix : sockfam = 1
const Afinet : sockfam = 2
const Afinet6 : sockfam = 30
/* socket types. */
const Sockstream : socktype = 1
const Sockdgram : socktype = 2
const Sockraw : socktype = 3
const Sockrdm : socktype = 4
const Sockseqpacket : socktype = 5
/* network protocols */
const Ipproto_ip : sockproto = 0
const Ipproto_icmp : sockproto = 1
const Ipproto_tcp : sockproto = 6
const Ipproto_udp : sockproto = 17
const Ipproto_raw : sockproto = 255
/* return value for a failed mapping */
const Mapbad : byte# = -1 castto(byte#)
/* syscalls.
note, creat() implemented as open(path, Creat|Trunc|Wronly) */
const Syssyscall : scno = 0x2000000
const Sysexit : scno = 0x2000001
const Sysfork : scno = 0x2000002
const Sysread : scno = 0x2000003
const Syswrite : scno = 0x2000004
const Sysopen : scno = 0x2000005
const Sysclose : scno = 0x2000006
const Syswait4 : scno = 0x2000007
const Syslink : scno = 0x2000009
const Sysunlink : scno = 0x200000a
const Syschdir : scno = 0x200000c
const Sysfchdir : scno = 0x200000d
const Sysmknod : scno = 0x200000e
const Syschmod : scno = 0x200000f
const Syschown : scno = 0x2000010
const Sysgetfsstat : scno = 0x2000012
const Sysgetpid : scno = 0x2000014
const Syssetuid : scno = 0x2000017
const Sysgetuid : scno = 0x2000018
const Sysgeteuid : scno = 0x2000019
const Sysptrace : scno = 0x200001a
const Sysrecvmsg : scno = 0x200001b
const Syssendmsg : scno = 0x200001c
const Sysrecvfrom : scno = 0x200001d
const Sysaccept : scno = 0x200001e
const Sysgetpeername : scno = 0x200001f
const Sysgetsockname : scno = 0x2000020
const Sysaccess : scno = 0x2000021
const Syschflags : scno = 0x2000022
const Sysfchflags : scno = 0x2000023
const Syssync : scno = 0x2000024
const Syskill : scno = 0x2000025
const Sysgetppid : scno = 0x2000027
const Sysdup : scno = 0x2000029
const Syspipe : scno = 0x200002a
const Sysgetegid : scno = 0x200002b
const Sysprofil : scno = 0x200002c
const Syssigaction : scno = 0x200002e
const Sysgetgid : scno = 0x200002f
const Syssigprocmask : scno = 0x2000030
const Sysgetlogin : scno = 0x2000031
const Syssetlogin : scno = 0x2000032
const Sysacct : scno = 0x2000033
const Syssigpending : scno = 0x2000034
const Syssigaltstack : scno = 0x2000035
const Sysioctl : scno = 0x2000036
const Sysreboot : scno = 0x2000037
const Sysrevoke : scno = 0x2000038
const Syssymlink : scno = 0x2000039
const Sysreadlink : scno = 0x200003a
const Sysexecve : scno = 0x200003b
const Sysumask : scno = 0x200003c
const Syschroot : scno = 0x200003d
const Sysmsync : scno = 0x2000041
const Sysvfork : scno = 0x2000042
const Sysmunmap : scno = 0x2000049
const Sysmprotect : scno = 0x200004a
const Sysmadvise : scno = 0x200004b
const Sysmincore : scno = 0x200004e
const Sysgetgroups : scno = 0x200004f
const Syssetgroups : scno = 0x2000050
const Sysgetpgrp : scno = 0x2000051
const Syssetpgid : scno = 0x2000052
const Syssetitimer : scno = 0x2000053
const Sysswapon : scno = 0x2000055
const Sysgetitimer : scno = 0x2000056
const Sysgetdtablesize : scno = 0x2000059
const Sysdup2 : scno = 0x200005a
const Sysfcntl : scno = 0x200005c
const Sysselect : scno = 0x200005d
const Sysfsync : scno = 0x200005f
const Syssetpriority : scno = 0x2000060
const Syssocket : scno = 0x2000061
const Sysconnect : scno = 0x2000062
const Sysgetpriority : scno = 0x2000064
const Sysbind : scno = 0x2000068
const Syssetsockopt : scno = 0x2000069
const Syslisten : scno = 0x200006a
const Syssigsuspend : scno = 0x200006f
const Sysgettimeofday : scno = 0x2000074
const Sysgetrusage : scno = 0x2000075
const Sysgetsockopt : scno = 0x2000076
const Sysreadv : scno = 0x2000078
const Syswritev : scno = 0x2000079
const Syssettimeofday : scno = 0x200007a
const Sysfchown : scno = 0x200007b
const Sysfchmod : scno = 0x200007c
const Syssetreuid : scno = 0x200007e
const Syssetregid : scno = 0x200007f
const Sysrename : scno = 0x2000080
const Sysflock : scno = 0x2000083
const Sysmkfifo : scno = 0x2000084
const Syssendto : scno = 0x2000085
const Sysshutdown : scno = 0x2000086
const Syssocketpair : scno = 0x2000087
const Sysmkdir : scno = 0x2000088
const Sysrmdir : scno = 0x2000089
const Sysutimes : scno = 0x200008a
const Sysfutimes : scno = 0x200008b
const Sysadjtime : scno = 0x200008c
const Sysgethostuuid : scno = 0x200008e
const Syssetsid : scno = 0x2000093
const Sysgetpgid : scno = 0x2000097
const Syssetprivexec : scno = 0x2000098
const Syspread : scno = 0x2000099
const Syspwrite : scno = 0x200009a
const Sysnfssvc : scno = 0x200009b
const Sysstatfs : scno = 0x200009d
const Sysfstatfs : scno = 0x200009e
const Sysunmount : scno = 0x200009f
const Sysgetfh : scno = 0x20000a1
const Sysquotactl : scno = 0x20000a5
const Sysmount : scno = 0x20000a7
const Syscsops : scno = 0x20000a9
const Syswaitid : scno = 0x20000ad
const Sysadd_profil : scno = 0x20000b0
const Syskdebug_trace : scno = 0x20000b4
const Syssetgid : scno = 0x20000b5
const Syssetegid : scno = 0x20000b6
const Sysseteuid : scno = 0x20000b7
const Syssigreturn : scno = 0x20000b8
const Syschud : scno = 0x20000b9
const Sysfdatasync : scno = 0x20000bb
const Sysstat : scno = 0x20000bc
const Sysfstat : scno = 0x20000bd
const Syslstat : scno = 0x20000be
const Syspathconf : scno = 0x20000bf
const Sysfpathconf : scno = 0x20000c0
const Sysgetrlimit : scno = 0x20000c2
const Syssetrlimit : scno = 0x20000c3
const Sysgetdirentries : scno = 0x20000c4
const Sysmmap : scno = 0x20000c5
const Syslseek : scno = 0x20000c7
const Systruncate : scno = 0x20000c8
const Sysftruncate : scno = 0x20000c9
const Sys__sysctl : scno = 0x20000ca
const Sysmlock : scno = 0x20000cb
const Sysmunlock : scno = 0x20000cc
const Sysundelete : scno = 0x20000cd
const SysATsocket : scno = 0x20000ce
const SysATgetmsg : scno = 0x20000cf
const SysATputmsg : scno = 0x20000d0
const SysATPsndreq : scno = 0x20000d1
const SysATPsndrsp : scno = 0x20000d2
const SysATPgetreq : scno = 0x20000d3
const SysATPgetrsp : scno = 0x20000d4
const Sysmkcomplex : scno = 0x20000d8
const Sysstatv : scno = 0x20000d9
const Syslstatv : scno = 0x20000da
const Sysfstatv : scno = 0x20000db
const Sysgetattrlist : scno = 0x20000dc
const Syssetattrlist : scno = 0x20000dd
const Sysgetdirentriesattr : scno = 0x20000de
const Sysexchangedata : scno = 0x20000df
const Syssearchfs : scno = 0x20000e1
const Sysdelete : scno = 0x20000e2
const Syscopyfile : scno = 0x20000e3
const Sysfgetattrlist : scno = 0x20000e4
const Sysfsetattrlist : scno = 0x20000e5
const Syspoll : scno = 0x20000e6
const Syswatchevent : scno = 0x20000e7
const Syswaitevent : scno = 0x20000e8
const Sysmodwatch : scno = 0x20000e9
const Sysgetxattr : scno = 0x20000ea
const Sysfgetxattr : scno = 0x20000eb
const Syssetxattr : scno = 0x20000ec
const Sysfsetxattr : scno = 0x20000ed
const Sysremovexattr : scno = 0x20000ee
const Sysfremovexattr : scno = 0x20000ef
const Syslistxattr : scno = 0x20000f0
const Sysflistxattr : scno = 0x20000f1
const Sysfsctl : scno = 0x20000f2
const Sysinitgroups : scno = 0x20000f3
const Sysposix_spawn : scno = 0x20000f4
const Sysffsctl : scno = 0x20000f5
const Sysnfsclnt : scno = 0x20000f7
const Sysfhopen : scno = 0x20000f8
const Sysminherit : scno = 0x20000fa
const Syssemsys : scno = 0x20000fb
const Sysmsgsys : scno = 0x20000fc
const Sysshmsys : scno = 0x20000fd
const Syssemctl : scno = 0x20000fe
const Syssemget : scno = 0x20000ff
const Syssemop : scno = 0x2000100
const Sysmsgctl : scno = 0x2000102
const Sysmsgget : scno = 0x2000103
const Sysmsgsnd : scno = 0x2000104
const Sysmsgrcv : scno = 0x2000105
const Sysshmat : scno = 0x2000106
const Sysshmctl : scno = 0x2000107
const Sysshmdt : scno = 0x2000108
const Sysshmget : scno = 0x2000109
const Sysshm_open : scno = 0x200010a
const Sysshm_unlink : scno = 0x200010b
const Syssem_open : scno = 0x200010c
const Syssem_close : scno = 0x200010d
const Syssem_unlink : scno = 0x200010e
const Syssem_wait : scno = 0x200010f
const Syssem_trywait : scno = 0x2000110
const Syssem_post : scno = 0x2000111
const Syssem_getvalue : scno = 0x2000112
const Syssem_init : scno = 0x2000113
const Syssem_destroy : scno = 0x2000114
const Sysopen_extended : scno = 0x2000115
const Sysumask_extended : scno = 0x2000116
const Sysstat_extended : scno = 0x2000117
const Syslstat_extended : scno = 0x2000118
const Sysfstat_extended : scno = 0x2000119
const Syschmod_extended : scno = 0x200011a
const Sysfchmod_extended : scno = 0x200011b
const Sysaccess_extended : scno = 0x200011c
const Syssettid : scno = 0x200011d
const Sysgettid : scno = 0x200011e
const Syssetsgroups : scno = 0x200011f
const Sysgetsgroups : scno = 0x2000120
const Syssetwgroups : scno = 0x2000121
const Sysgetwgroups : scno = 0x2000122
const Sysmkfifo_extended : scno = 0x2000123
const Sysmkdir_extended : scno = 0x2000124
const Sysidentitysvc : scno = 0x2000125
const Sysshared_region_check_np : scno = 0x2000126
const Sysshared_region_map_np : scno = 0x2000127
const Sysvm_pressure_monitor : scno = 0x2000128
const Syspsynch_rw_longrdlock : scno = 0x2000129
const Syspsynch_rw_yieldwrlock : scno = 0x200012a
const Syspsynch_rw_downgrade : scno = 0x200012b
const Syspsynch_rw_upgrade : scno = 0x200012c
const Syspsynch_mutexwait : scno = 0x200012d
const Syspsynch_mutexdrop : scno = 0x200012e
const Syspsynch_cvbroad : scno = 0x200012f
const Syspsynch_cvsignal : scno = 0x2000130
const Syspsynch_cvwait : scno = 0x2000131
const Syspsynch_rw_rdlock : scno = 0x2000132
const Syspsynch_rw_wrlock : scno = 0x2000133
const Syspsynch_rw_unlock : scno = 0x2000134
const Syspsynch_rw_unlock2 : scno = 0x2000135
const Sysgetsid : scno = 0x2000136
const Syssettid_with_pid : scno = 0x2000137
const Sysaio_fsync : scno = 0x2000139
const Sysaio_return : scno = 0x200013a
const Sysaio_suspend : scno = 0x200013b
const Sysaio_cancel : scno = 0x200013c
const Sysaio_error : scno = 0x200013d
const Sysaio_read : scno = 0x200013e
const Sysaio_write : scno = 0x200013f
const Syslio_listio : scno = 0x2000140
const Sysiopolicysys : scno = 0x2000142
const Sysmlockall : scno = 0x2000144
const Sysmunlockall : scno = 0x2000145
const Sysissetugid : scno = 0x2000147
const Sys__pthread_kill : scno = 0x2000148
const Sys__pthread_sigmask : scno = 0x2000149
const Sys__sigwait : scno = 0x200014a
const Sys__disable_threadsignal : scno = 0x200014b
const Sys__pthread_markcancel : scno = 0x200014c
const Sys__pthread_canceled : scno = 0x200014d
const Sys__semwait_signal : scno = 0x200014e
const Sysproc_info : scno = 0x2000150
const Syssendfile : scno = 0x2000151
const Sysstat64 : scno = 0x2000152
const Sysfstat64 : scno = 0x2000153
const Syslstat64 : scno = 0x2000154
const Sysstat64_extended : scno = 0x2000155
const Syslstat64_extended : scno = 0x2000156
const Sysfstat64_extended : scno = 0x2000157
const Sysgetdirentries64 : scno = 0x2000158
const Sysstatfs64 : scno = 0x2000159
const Sysfstatfs64 : scno = 0x200015a
const Sysgetfsstat64 : scno = 0x200015b
const Sys__pthread_chdir : scno = 0x200015c
const Sys__pthread_fchdir : scno = 0x200015d
const Sysaudit : scno = 0x200015e
const Sysauditon : scno = 0x200015f
const Sysgetauid : scno = 0x2000161
const Syssetauid : scno = 0x2000162
const Sysgetaudit : scno = 0x2000163
const Syssetaudit : scno = 0x2000164
const Sysgetaudit_addr : scno = 0x2000165
const Syssetaudit_addr : scno = 0x2000166
const Sysauditctl : scno = 0x2000167
const Sysbsdthread_create : scno = 0x2000168
const Sysbsdthread_terminate : scno = 0x2000169
const Syskqueue : scno = 0x200016a
const Syskevent : scno = 0x200016b
const Syslchown : scno = 0x200016c
const Sysstack_snapshot : scno = 0x200016d
const Sysbsdthread_register : scno = 0x200016e
const Sysworkq_open : scno = 0x200016f
const Sysworkq_kernreturn : scno = 0x2000170
const Syskevent64 : scno = 0x2000171
const Sys__old_semwait_signal : scno = 0x2000172
const Sys__old_semwait_signal_nocancel : scno = 0x2000173
const Systhread_selfid : scno = 0x2000174
const Sys__mac_execve : scno = 0x200017c
const Sys__mac_syscall : scno = 0x200017d
const Sys__mac_get_file : scno = 0x200017e
const Sys__mac_set_file : scno = 0x200017f
const Sys__mac_get_link : scno = 0x2000180
const Sys__mac_set_link : scno = 0x2000181
const Sys__mac_get_proc : scno = 0x2000182
const Sys__mac_set_proc : scno = 0x2000183
const Sys__mac_get_fd : scno = 0x2000184
const Sys__mac_set_fd : scno = 0x2000185
const Sys__mac_get_pid : scno = 0x2000186
const Sys__mac_get_lcid : scno = 0x2000187
const Sys__mac_get_lctx : scno = 0x2000188
const Sys__mac_set_lctx : scno = 0x2000189
const Syssetlcid : scno = 0x200018a
const Sysgetlcid : scno = 0x200018b
const Sysread_nocancel : scno = 0x200018c
const Syswrite_nocancel : scno = 0x200018d
const Sysopen_nocancel : scno = 0x200018e
const Sysclose_nocancel : scno = 0x200018f
const Syswait4_nocancel : scno = 0x2000190
const Sysrecvmsg_nocancel : scno = 0x2000191
const Syssendmsg_nocancel : scno = 0x2000192
const Sysrecvfrom_nocancel : scno = 0x2000193
const Sysaccept_nocancel : scno = 0x2000194
const Sysmsync_nocancel : scno = 0x2000195
const Sysfcntl_nocancel : scno = 0x2000196
const Sysselect_nocancel : scno = 0x2000197
const Sysfsync_nocancel : scno = 0x2000198
const Sysconnect_nocancel : scno = 0x2000199
const Syssigsuspend_nocancel : scno = 0x200019a
const Sysreadv_nocancel : scno = 0x200019b
const Syswritev_nocancel : scno = 0x200019c
const Syssendto_nocancel : scno = 0x200019d
const Syspread_nocancel : scno = 0x200019e
const Syspwrite_nocancel : scno = 0x200019f
const Syswaitid_nocancel : scno = 0x20001a0
const Syspoll_nocancel : scno = 0x20001a1
const Sysmsgsnd_nocancel : scno = 0x20001a2
const Sysmsgrcv_nocancel : scno = 0x20001a3
const Syssem_wait_nocancel : scno = 0x20001a4
const Sysaio_suspend_nocancel : scno = 0x20001a5
const Sys__sigwait_nocancel : scno = 0x20001a6
const Sys__semwait_signal_nocancel : scno = 0x20001a7
const Sys__mac_mount : scno = 0x20001a8
const Sys__mac_get_mount : scno = 0x20001a9
const Sys__mac_getfsstat : scno = 0x20001aa
const Sysfsgetpath : scno = 0x20001ab
const Sysaudit_session_self : scno = 0x20001ac
const Sysaudit_session_join : scno = 0x20001ad
const Syspid_suspend : scno = 0x20001ae
const Syspid_resume : scno = 0x20001af
const Sysfileport_makeport : scno = 0x20001b0
const Sysfileport_makefd : scno = 0x20001b1
extern const syscall : (sc:scno, args:... -> int64)
/* process control */
const exit : (status:int -> void)
const getpid : ( -> pid)
const kill : (pid : pid, sig:int64 -> int64)
const fork : (-> pid)
const wait4 : (pid : pid, loc:int32#, opt : int64, rusage:rusage# -> int64)
const waitpid : (pid : pid, loc:int32#, opt : int64 -> int64)
const execv : (cmd : byte[:], args : byte[:][:] -> int64)
const execve : (cmd : byte[:], args : byte[:][:], env : byte[:][:] -> int64)
/* wrappers to extract wait status */
const waitstatus : (st : int32 -> waitstatus)
/* file manipulation */
const open : (path:byte[:], opts:fdopt -> fd)
const openmode : (path:byte[:], opts:fdopt, mode:int64 -> fd)
const close : (fd:fd -> int64)
const creat : (path:byte[:], mode:int64 -> fd)
const unlink : (path:byte[:] -> int)
const read : (fd:fd, buf:byte[:] -> size)
const write : (fd:fd, buf:byte[:] -> size)
const lseek : (fd:fd, off:off, whence:whence -> off)
const stat : (path:byte[:], sb:statbuf# -> int64)
const lstat : (path:byte[:], sb:statbuf# -> int64)
const fstat : (fd:fd, sb:statbuf# -> int64)
const mkdir : (path : byte[:], mode : int64 -> int64)
generic ioctl : (fd:fd, req : int64, args:@a# -> int64)
const getdirentries64 : (fd : fd, buf : byte[:], basep : int64# -> int64)
const chdir : (p : byte[:] -> int64)
/* fd stuff */
const pipe : (fd : fd[2]# -> int64)
const dup : (fd : fd -> fd)
const dup2 : (src : fd, dst : fd -> fd)
/* NB: the C ABI uses '...' for the args. */
const fcntl : (fd : fd, cmd : fcntlcmd, args : byte# -> int64)
/* kqueue */
const kqueue : (-> fd)
const kevent : (q : fd, cl : kevent[:], el : kevent[:], flg : kflags, timeout : timespec# -> int64)
const kevent64 : (q : fd, cl : kevent64[:], el : kevent64[:], flg : kflags, timeout : timespec# -> int64)
/* networking */
const socket : (dom : sockfam, stype : socktype, proto : sockproto -> fd)
const connect : (sock : fd, addr : sockaddr#, len : size -> int)
const accept : (sock : fd, addr : sockaddr#, len : size# -> fd)
const listen : (sock : fd, backlog : int -> int)
const bind : (sock : fd, addr : sockaddr#, len : size -> int)
/* memory mapping */
const munmap : (addr:byte#, len:size -> int64)
const mmap : (addr:byte#, len:size, prot:mprot, flags:mopt, fd:fd, off:off -> byte#)
/* time */
const gettimeofday : (tv : timeval#, tz : timezone# -> int)
const settimeofday : (tv : timeval#, tz : timezone# -> int)
/* faked with gettimeofday */
const clock_getres : (clk : clock, ts : timespec# -> int)
const clock_gettime : (clk : clock, ts : timespec# -> int)
const clock_settime : (clk : clock, ts : timespec# -> int)
/* FIXME: HACK HACK HACK -- does nothing */
const sleep : (time : uint64 -> int32)
/* system information */
const uname : (buf : utsname# -> int)
const sysctl : (mib : int[:], old : byte[:]#, new : byte[:] -> int)
/* filled by start code */
extern const __cenvp : byte##
extern const __environment : byte[:][:]
;;