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syscalls.master: Add a new syscall type: RESERVED

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RESERVED syscall number are reserved for local/vendor use.  RESERVED is
identical to UNIMPL except that comments are ignored.

Reviewed by:	kevans
Sponsored by:	DARPA
Differential Revision:	https://reviews.freebsd.org/D27988
This commit is contained in:
Brooks Davis 2021-01-26 18:27:44 +00:00
parent 65a524b499
commit 119fa6ee8a
2 changed files with 17 additions and 9 deletions
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3
sys/kern/syscalls.master
View File

@ -11,7 +11,7 @@
; there is no audit event for the call at this time. For the
; case where the event exists, but we don't want auditing, the
; event should be #defined to AUE_NULL in audit_kevents.h.
; type one of STD, OBSOL, UNIMPL, COMPAT, COMPAT4, COMPAT6,
; type one of STD, OBSOL, RESERVED, UNIMPL, COMPAT, COMPAT4, COMPAT6,
; COMPAT7, COMPAT11, COMPAT12, NODEF, NOARGS, NOPROTO, NOSTD
; The COMPAT* options may be combined with one or more NO*
; options separated by '|' with no spaces (e.g. COMPAT|NOARGS)
@ -32,6 +32,7 @@
; COMPAT11 included on COMPAT_FREEBSD11 #ifdef (FreeBSD 11 compat)
; COMPAT12 included on COMPAT_FREEBSD12 #ifdef (FreeBSD 12 compat)
; OBSOL obsolete, not included in system, only specifies name
; RESERVED reserved for local or vendor use
; UNIMPL not implemented, placeholder only
; NOSTD implemented but as a lkm that can be statically
; compiled in; sysent entry will be filled with lkmressys

23
sys/tools/makesyscalls.lua
View File

@ -144,12 +144,13 @@ local known_abi_flags = {
local known_flags = {
STD = 0x00000001,
OBSOL = 0x00000002,
UNIMPL = 0x00000004,
NODEF = 0x00000008,
NOARGS = 0x00000010,
NOPROTO = 0x00000020,
NOSTD = 0x00000040,
NOTSTATIC = 0x00000080,
RESERVED = 0x00000004,
UNIMPL = 0x00000008,
NODEF = 0x00000010,
NOARGS = 0x00000020,
NOPROTO = 0x00000040,
NOSTD = 0x00000080,
NOTSTATIC = 0x00000100,
-- Compat flags start from here. We have plenty of space.
}
@ -905,6 +906,10 @@ local function handle_unimpl(sysnum, sysstart, sysend, comment)
end
end
local function handle_reserved(sysnum, sysstart, sysend, comment)
handle_unimpl(sysnum, sysstart, sysend, "reserved for local use")
end
process_syscall_def = function(line)
local sysstart, sysend, flags, funcname, sysflags
local thr_flag, syscallret
@ -949,8 +954,8 @@ process_syscall_def = function(line)
flags = flags | known_flags[flag]
end
if (flags & known_flags["UNIMPL"]) == 0 and sysnum == nil then
abort(1, "Range only allowed with UNIMPL: " .. line)
if (flags & get_mask({"RESERVED", "UNIMPL"})) == 0 and sysnum == nil then
abort(1, "Range only allowed with RESERVED and UNIMPL: " .. line)
end
if (flags & known_flags["NOTSTATIC"]) ~= 0 then
@ -1114,6 +1119,8 @@ process_syscall_def = function(line)
argalias)
elseif flags & known_flags["OBSOL"] ~= 0 then
handle_obsol(sysnum, funcname, funcomment)
elseif flags & known_flags["RESERVED"] ~= 0 then
handle_reserved(sysnum, sysstart, sysend)
elseif flags & known_flags["UNIMPL"] ~= 0 then
handle_unimpl(sysnum, sysstart, sysend, funcomment)
else