libc: elf auxiliary vector handling to libsys

This is part of the interface to the kernel and some syscall wrappers
depend on it so move it there.

Reviewed by:	kib, emaste, imp
Pull Request:	https://github.com/freebsd/freebsd-src/pull/908

lib/libc/gen/Makefile.inc

@@ -18,7 +18,6 @@ SRCS+=	__getosreldate.c \
 	arc4random-compat.c \
 	arc4random_uniform.c \
 	assert.c \
-	auxv.c \
 	basename.c \
 	basename_compat.c \
 	cap_sandboxed.c \
@@ -197,7 +196,6 @@ SYM_MAPS+=${LIBC_SRCTOP}/gen/Symbol.map
 
 MAN+=	alarm.3 \
 	arc4random.3 \
-	auxv.3 \
 	basename.3 \
 	cap_rights_get.3 \
 	cap_sandboxed.3 \
@@ -324,7 +322,6 @@ MAN+=	alarm.3 \
 
 MLINKS+=arc4random.3 arc4random_buf.3 \
 	arc4random.3 arc4random_uniform.3
-MLINKS+=auxv.3 elf_aux_info.3
 MLINKS+=ctermid.3 ctermid_r.3
 MLINKS+=daemon.3 daemonfd.3
 MLINKS+=devname.3 devname_r.3

lib/libc/gen/Symbol.map

@@ -404,7 +404,6 @@ FBSD_1.5 {
 	devname;
 	devname_r;
 	dirname;
-	elf_aux_info;
 	fts_children;
 	fts_close;
 	fts_get_clientptr;
@@ -582,7 +581,6 @@ FBSDprivate_1.0 {
 
 	__libc_tcdrain;
 
-	__elf_aux_vector;
 	__pthread_distribute_static_tls;
 	__pthread_map_stacks_exec;
 	__fillcontextx;

lib/libsys/Makefile.sys

@@ -44,6 +44,8 @@ SRCS+=	recv.c recvmmsg.c send.c sendmmsg.c
 NOASM+=  sched_getcpu.o
 PSEUDO+= _sched_getcpu.o
 
+SRCS+= auxv.c
+
 SRCS+= brk.c
 SRCS+= closefrom.c
 SRCS+= pipe.c
@@ -166,6 +168,7 @@ MAN+=	abort2.2 \
 	aio_suspend.2 \
 	aio_waitcomplete.2 \
 	aio_write.2 \
+	auxv.3 \
 	bind.2 \
 	bindat.2 \
 	brk.2 \
@@ -378,6 +381,7 @@ MLINKS+=aio_write.2 aio_writev.2
 MLINKS+=accept.2 accept4.2
 MLINKS+=access.2 eaccess.2 \
 	access.2 faccessat.2
+MLINKS+=auxv.3 elf_aux_info.3
 MLINKS+=brk.2 sbrk.2
 MLINKS+=cap_enter.2 cap_getmode.2
 MLINKS+=cap_fcntls_limit.2 cap_fcntls_get.2

lib/libsys/Symbol.sys.map

@@ -378,6 +378,7 @@ FBSD_1.4 {
 
 FBSD_1.5 {
 	clock_nanosleep;
+	elf_aux_info;
 	fdatasync;
 	fhstat;
 	fhstatfs;
@@ -1049,10 +1050,12 @@ FBSDprivate_1.0 {
 	__sys_writev;
 
 	/* Things that aren't system calls (in sort(1) order) */
+	__elf_aux_vector;
 	__libc_sigwait;
 	__libsys_interposing_slot;
 	__set_error_selector;
 	__sigwait;
+	_elf_aux_info;
 	gssd_syscall;
 	nlm_syscall;
 	rpctls_syscall;