Move the stack protector to a new "secure" directory

As part of the code refactoring to support FORTIFY_SOURCE we want
a new subdirectory "secure" to keep the files related to security.
Move the stack protector functions to this new directory.

No functional change.

Differential Review:	https://reviews.freebsd.org/D3333

7 files changed, 27 insertions, 5 deletions

diff --git a/lib/libc/Makefile b/lib/libc/Makefile
index b6d3f9f..2f8865c 100644
--- a/lib/libc/Makefile
+++ b/lib/libc/Makefile
@@ -95,6 +95,7 @@ NOASM=
 .include "${LIBC_SRCTOP}/stdtime/Makefile.inc"
 .include "${LIBC_SRCTOP}/string/Makefile.inc"
 .include "${LIBC_SRCTOP}/sys/Makefile.inc"
+.include "${LIBC_SRCTOP}/secure/Makefile.inc"
 .include "${LIBC_SRCTOP}/rpc/Makefile.inc"
 .include "${LIBC_SRCTOP}/uuid/Makefile.inc"
 .include "${LIBC_SRCTOP}/xdr/Makefile.inc"
diff --git a/lib/libc/secure/Makefile.inc b/lib/libc/secure/Makefile.inc
new file mode 100644
index 0000000..6f18bde
--- /dev/null
+++ b/lib/libc/secure/Makefile.inc
@@ -0,0 +1,12 @@
+# $FreeBSD$
+#
+# libc sources related to security
+
+.PATH: ${LIBC_SRCTOP}/secure
+
+# Sources common to both syscall interfaces:
+SRCS+=	\
+	stack_protector.c \
+	stack_protector_compat.c
+
+SYM_MAPS+=    ${LIBC_SRCTOP}/secure/Symbol.map
diff --git a/lib/libc/secure/Symbol.map b/lib/libc/secure/Symbol.map
new file mode 100644
index 0000000..11bad3a
--- /dev/null
+++ b/lib/libc/secure/Symbol.map
@@ -0,0 +1,14 @@
+/*
+ * $FreeBSD$
+ */
+
+/*
+ * It'd be nice to have this automatically generated, but we don't
+ * know to what version they will eventually belong, so for now
+ * it has to be manual.
+ */
+FBSD_1.0 {
+	__chk_fail;
+	__stack_chk_fail;
+	__stack_chk_guard;
+};
diff --git a/lib/libc/sys/stack_protector.c b/lib/libc/secure/stack_protector.c
index cd5f166..cd5f166 100644
--- a/lib/libc/sys/stack_protector.c
+++ b/lib/libc/secure/stack_protector.c
diff --git a/lib/libc/sys/stack_protector_compat.c b/lib/libc/secure/stack_protector_compat.c
index cacb863..cacb863 100644
--- a/lib/libc/sys/stack_protector_compat.c
+++ b/lib/libc/secure/stack_protector_compat.c
diff --git a/lib/libc/sys/Makefile.inc b/lib/libc/sys/Makefile.inc
index e672b69..fad970c 100644
--- a/lib/libc/sys/Makefile.inc
+++ b/lib/libc/sys/Makefile.inc
@@ -21,8 +21,6 @@ PSEUDO+= _clock_gettime.o _gettimeofday.o
 
 # Sources common to both syscall interfaces:
 SRCS+=	\
-	stack_protector.c \
-	stack_protector_compat.c \
 	__error.c \
 	interposing_table.c
 
diff --git a/lib/libc/sys/Symbol.map b/lib/libc/sys/Symbol.map
index a3a613e..45833ab 100644
--- a/lib/libc/sys/Symbol.map
+++ b/lib/libc/sys/Symbol.map
@@ -56,7 +56,6 @@ FBSD_1.0 {
 	bind;
 	chdir;
 	chflags;
-	__chk_fail;
 	chmod;
 	chown;
 	chroot;
@@ -281,8 +280,6 @@ FBSD_1.0 {
 	sigwaitinfo;
 	socket;
 	socketpair;
-	__stack_chk_fail;
-	__stack_chk_guard;
 	stat;
 	statfs;
 	swapoff;