Mark uname(), getdomainname() and setdomainname() with COMPAT_FREEBSD4.

Looking at our source code history, it seems the uname(),
getdomainname() and setdomainname() system calls got deprecated
somewhere after FreeBSD 1.1, but they have never been phased out
properly. Because we don't have a COMPAT_FREEBSD1, just use
COMPAT_FREEBSD4.

Also fix the Linuxolator to build without the setdomainname() routine by
just making it call userland_sysctl on kern.domainname. Also replace the
setdomainname()'s implementation to use this approach, because we're
duplicating code with sysctl_domainname().

I wasn't able to keep these three routines working in our
COMPAT_FREEBSD32, because that would require yet another keyword for
syscalls.master (COMPAT4+NOPROTO). Because this routine is probably
unused already, this won't be a problem in practice. If it turns out to
be a problem, we'll just restore this functionality.

Reviewed by:	rdivacky, kib

7 files changed, 8 insertions, 15 deletions

diff --git a/lib/libc/amd64/sys/Makefile.inc b/lib/libc/amd64/sys/Makefile.inc
index 5115819..c7b17e0 100644
--- a/lib/libc/amd64/sys/Makefile.inc
+++ b/lib/libc/amd64/sys/Makefile.inc
@@ -7,8 +7,7 @@ MDASM=	vfork.S brk.S cerror.S exect.S getcontext.S pipe.S ptrace.S \
 	reboot.S sbrk.S setlogin.S sigreturn.S
 
 # Don't generate default code for these syscalls:
-NOASM=	break.o exit.o getdomainname.o getlogin.o openbsd_poll.o \
-	setdomainname.o sstk.o uname.o vfork.o yield.o
+NOASM=	break.o exit.o getlogin.o openbsd_poll.o sstk.o vfork.o yield.o
 
 PSEUDO=	_getlogin.o _exit.o
 .if !defined(WITHOUT_SYSCALL_COMPAT)
diff --git a/lib/libc/arm/sys/Makefile.inc b/lib/libc/arm/sys/Makefile.inc
index 6c38e7d..1a58eae 100644
--- a/lib/libc/arm/sys/Makefile.inc
+++ b/lib/libc/arm/sys/Makefile.inc
@@ -3,8 +3,7 @@
 MDASM= Ovfork.S brk.S cerror.S pipe.S ptrace.S sbrk.S shmat.S sigreturn.S syscall.S
 
 # Don't generate default code for these syscalls:
-NOASM=	break.o exit.o getdomainname.o getlogin.o openbsd_poll.o \
-	setdomainname.o sstk.o uname.o vfork.o yield.o
+NOASM=	break.o exit.o getlogin.o openbsd_poll.o sstk.o vfork.o yield.o
 
 PSEUDO= _exit.o _getlogin.o
 .if !defined(WITHOUT_SYSCALL_COMPAT)
diff --git a/lib/libc/i386/sys/Makefile.inc b/lib/libc/i386/sys/Makefile.inc
index 8da2ab8..593956b 100644
--- a/lib/libc/i386/sys/Makefile.inc
+++ b/lib/libc/i386/sys/Makefile.inc
@@ -12,8 +12,7 @@ MDASM=	Ovfork.S brk.S cerror.S exect.S getcontext.S pipe.S ptrace.S \
 	reboot.S sbrk.S setlogin.S sigreturn.S syscall.S
 
 # Don't generate default code for these syscalls:
-NOASM=	break.o exit.o getdomainname.o getlogin.o openbsd_poll.o \
-	setdomainname.o sstk.o uname.o vfork.o yield.o
+NOASM=	break.o exit.o getlogin.o openbsd_poll.o sstk.o vfork.o yield.o
 
 PSEUDO=	_getlogin.o _exit.o
 .if !defined(WITHOUT_SYSCALL_COMPAT)
diff --git a/lib/libc/ia64/sys/Makefile.inc b/lib/libc/ia64/sys/Makefile.inc
index 0b577b9..3876d3a 100644
--- a/lib/libc/ia64/sys/Makefile.inc
+++ b/lib/libc/ia64/sys/Makefile.inc
@@ -4,8 +4,7 @@ MDASM+=	Ovfork.S brk.S cerror.S exect.S fork.S getcontext.S pipe.S ptrace.S \
 	sbrk.S setlogin.S sigreturn.S swapcontext.S
 
 # Don't generate default code for these syscalls:
-NOASM=	break.o exit.o getdomainname.o getlogin.o openbsd_poll.o \
-	setdomainname.o sstk.o uname.o vfork.o yield.o
+NOASM=	break.o exit.o getlogin.o openbsd_poll.o sstk.o vfork.o yield.o
 
 PSEUDO=	_getlogin.o _exit.o
 .if !defined(WITHOUT_SYSCALL_COMPAT)
diff --git a/lib/libc/mips/sys/Makefile.inc b/lib/libc/mips/sys/Makefile.inc
index ab1c28f..d2e7291 100644
--- a/lib/libc/mips/sys/Makefile.inc
+++ b/lib/libc/mips/sys/Makefile.inc
@@ -4,9 +4,8 @@ MDASM=  Ovfork.S brk.S cerror.S exect.S \
 	fork.S pipe.S ptrace.S sbrk.S shmat.S syscall.S
 
 # Don't generate default code for these syscalls:
-NOASM=	break.o exit.o ftruncate.o getdomainname.o getlogin.o \
-	lseek.o mmap.o openbsd_poll.o pread.o \
-	pwrite.o setdomainname.o sstk.o truncate.o uname.o vfork.o yield.o
+NOASM=	break.o exit.o ftruncate.o getlogin.o lseek.o mmap.o \
+	openbsd_poll.o pread.o pwrite.o sstk.o truncate.o vfork.o yield.o
 
 PSEUDO= _exit.o _getlogin.o
 .if !defined(WITHOUT_SYSCALL_COMPAT)
diff --git a/lib/libc/powerpc/sys/Makefile.inc b/lib/libc/powerpc/sys/Makefile.inc
index 6ca7938..5193cc2 100644
--- a/lib/libc/powerpc/sys/Makefile.inc
+++ b/lib/libc/powerpc/sys/Makefile.inc
@@ -3,8 +3,7 @@
 MDASM+=	brk.S cerror.S exect.S pipe.S ptrace.S sbrk.S setlogin.S
 
 # Don't generate default code for these syscalls:
-NOASM=	break.o exit.o getdomainname.o getlogin.o openbsd_poll.o \
-	setdomainname.o sstk.o uname.o yield.o
+NOASM=	break.o exit.o getlogin.o openbsd_poll.o sstk.o yield.o
 
 PSEUDO=	_getlogin.o _exit.o
 .if !defined(WITHOUT_SYSCALL_COMPAT)
diff --git a/lib/libc/sparc64/sys/Makefile.inc b/lib/libc/sparc64/sys/Makefile.inc
index b738a57..43e4edb 100644
--- a/lib/libc/sparc64/sys/Makefile.inc
+++ b/lib/libc/sparc64/sys/Makefile.inc
@@ -18,8 +18,7 @@ CFLAGS+= -DSUN4V
 MDASM+=	brk.S cerror.S exect.S pipe.S ptrace.S sbrk.S setlogin.S sigaction.S
 
 # Don't generate default code for these syscalls:
-NOASM=	break.o exit.o getdomainname.o getlogin.o openbsd_poll.o \
-	setdomainname.o sstk.o uname.o yield.o
+NOASM=	break.o exit.o getlogin.o openbsd_poll.o sstk.o yield.o
 
 PSEUDO=	_getlogin.o _exit.o
 .if !defined(WITHOUT_SYSCALL_COMPAT)