5 files changed, 167 insertions, 1 deletions
diff --git a/usr/src/test/libc-tests/cfg/Makefile b/usr/src/test/libc-tests/cfg/Makefile
index 0fb1a4096a..e1d83c43b3 100644
--- a/usr/src/test/libc-tests/cfg/Makefile
+++ b/usr/src/test/libc-tests/cfg/Makefile
@@ -36,6 +36,7 @@ CFGS = README \
 	symbols/string_h.cfg \
 	symbols/strings_h.cfg \
 	symbols/sys_atomic_h.cfg \
+	symbols/sys_mman_h.cfg \
 	symbols/sys_stat_h.cfg \
 	symbols/sys_time_h.cfg \
 	symbols/sys_timeb_h.cfg \
diff --git a/usr/src/test/libc-tests/cfg/compilation.cfg b/usr/src/test/libc-tests/cfg/compilation.cfg
index 1219844a0c..ec7e35660e 100644
--- a/usr/src/test/libc-tests/cfg/compilation.cfg
+++ b/usr/src/test/libc-tests/cfg/compilation.cfg
@@ -73,7 +73,8 @@ env_group | SUS+	| SUSv1+
 env_group | XPG4+	| XPG4 SUSv1+
 env_group | XPG3+	| XPG3 XPG4+
 env_group | C99+	| C99 C11 POSIX-2001+ SUSv3+
-env_group | C+		| C90 C99 C11 POSIX+ SUS+
+env_group | STDC	| C90 C99 C11
+env_group | C+		| STDC POSIX+ SUS+
 env_group | ALL		| C+
 
 #
diff --git a/usr/src/test/libc-tests/cfg/symbols/sys_mman_h.cfg b/usr/src/test/libc-tests/cfg/symbols/sys_mman_h.cfg
new file mode 100644
index 0000000000..e9c8c1d5a5
--- /dev/null
+++ b/usr/src/test/libc-tests/cfg/symbols/sys_mman_h.cfg
@@ -0,0 +1,162 @@
+#
+# This file and its contents are supplied under the terms of the
+# Common Development and Distribution License ("CDDL"), version 1.0.
+# You may only use this file in accordance with the terms of version
+# 1.0 of the CDDL.
+#
+# A full copy of the text of the CDDL should have accompanied this
+# source.  A copy of the CDDL is also available via the Internet at
+# http://www.illumos.org/license/CDDL.
+#
+
+#
+# Copyright 2022 Oxide Computer Company
+#
+
+#
+# Historical note: This header has never been part of ISO C. The
+# visibility rules were always specific to versions of POSIX/XPG.
+# Applications have assumed that these are visible even in a strict ISO
+# C environment, which we honor because this header isn't part of the
+# standard. See <sys/mman.h> for more details, but this is why you see
+# the STDC group here for things that aren't standardized, as we want
+# to make sure we don't regress that support.
+#
+
+#
+# Types
+#
+
+#
+# Values.
+#
+value	| PROT_READ	| int	| sys/mman.h	| +ALL
+value	| PROT_WRITE	| int	| sys/mman.h	| +ALL
+value	| PROT_EXEC	| int	| sys/mman.h	| +ALL
+value	| PROT_NONE	| int	| sys/mman.h	| +ALL
+value	| MAP_SHARED	| int	| sys/mman.h	| +ALL
+value	| MAP_PRIVATE	| int	| sys/mman.h	| +ALL
+value	| MAP_FILE	| int	| sys/mman.h	| +ALL
+value	| MAP_FIXED	| int	| sys/mman.h	| +ALL
+value	| MAP_NORESERVE	| int	| sys/mman.h	| +ALL
+value	| MAP_ANON	| int	| sys/mman.h	| +ALL
+value	| MAP_ALIGN	| int	| sys/mman.h	| +ALL
+value	| MAP_TEXT	| int	| sys/mman.h	| +ALL
+value	| MAP_INITDATA	| int	| sys/mman.h	| +ALL
+
+value	| MCL_CURRENT	| int	| sys/mman.h	| STDC POSIX-1993+ SUSv2+
+value	| MCL_FUTURE	| int	| sys/mman.h	| STDC POSIX-1993+ SUSv2+
+
+
+value	| POSIX_MADV_NORMAL	| int	| sys/mman.h	| STDC SUSv3+
+value	| POSIX_MADV_RANDOM	| int	| sys/mman.h	| STDC SUSv3+
+value	| POSIX_MADV_SEQUENTIAL	| int	| sys/mman.h	| STDC SUSv3+
+value	| POSIX_MADV_WILLNEED	| int	| sys/mman.h	| STDC SUSv3+
+value	| POSIX_MADV_DONTNEED	| int	| sys/mman.h	| STDC SUSv3+
+
+value	| MAP_FAILED	| void *	| sys/mman.h	| +ALL
+
+#
+# Defines
+#
+
+#
+# Functions
+#
+
+#
+# This first group of functions basically should always be visible.
+#
+func | mmap						|\
+	void *						|\
+	void *; size_t; int; int; int; off_t		|\
+	sys/mman.h | +ALL
+
+func | munmap						|\
+	int						|\
+	void *; size_t					|\
+	sys/mman.h | +ALL
+
+func | mprotect						|\
+	int						|\
+	void *; size_t; int				|\
+	sys/mman.h | +ALL
+
+func | msync						|\
+	int						|\
+	void *; size_t; int				|\
+	sys/mman.h | +ALL
+
+
+#
+# This next group of functions were added in the realtime POSIX extensions, e.g.
+# they should be in POSIX at POSIX-1993. However, they weren't part of XPG until
+# XPG5, aka what we call SUSv2 in these tests.
+#
+func | mlock						|\
+	int						|\
+	void *; size_t					|\
+	sys/mman.h | STDC POSIX-1993+ SUSv2+
+
+func | munlock						|\
+	int						|\
+	void *; size_t					|\
+	sys/mman.h | STDC POSIX-1993+ SUSv2+
+
+func | mlockall						|\
+	int						|\
+	int						|\
+	sys/mman.h | STDC POSIX-1993+ SUSv2+
+
+func | munlockall					|\
+	int						|\
+	void						|\
+	sys/mman.h | STDC POSIX-1993+ SUSv2+
+
+func | shm_open						|\
+	int						|\
+	const char *; int; mode_t			|\
+	sys/mman.h | STDC POSIX-1993+ SUSv2+
+
+func | shm_unlink					|\
+	int						|\
+	const char *					|\
+	sys/mman.h | STDC POSIX-1993+ SUSv2+
+
+#
+# Added in XPG6
+#
+func | posix_madvise					|\
+	int						|\
+	void *; size_t; int				|\
+	sys/mman.h | STDC SUSv3+
+
+#
+# Our various extensions. No visibility expected in a standards environment. We
+# do a handful of these with the assumption that as long as a few in the block
+# are OK, the rest should be.
+#
+func | mincore						|\
+	int						|\
+	caddr_t; size_t; char *				|\
+	sys/mman.h | -ALL STDC
+
+func | memcntl						|\
+	int						|\
+	void *; size_t; int; void *; int; int		|\
+	sys/mman.h | -ALL STDC
+
+func | madvise						|\
+	int						|\
+	void *; size_t; int				|\
+	sys/mman.h | -ALL STDC
+
+func | getpagesizes					|\
+	int						|\
+	size_t *; int					|\
+	sys/mman.h | -ALL STDC
+
+func | getpagesizes2					|\
+	int						|\
+	size_t *; int					|\
+	sys/mman.h | -ALL STDC
diff --git a/usr/src/test/libc-tests/runfiles/default.run b/usr/src/test/libc-tests/runfiles/default.run
index 32cac780d1..6c225db7a1 100644
--- a/usr/src/test/libc-tests/runfiles/default.run
+++ b/usr/src/test/libc-tests/runfiles/default.run
@@ -161,6 +161,7 @@ tests = [
 	'string_h',
 	'strings_h',
 	'sys_atomic_h',
+	'sys_mman_h',
 	'sys_stat_h',
 	'sys_time_h',
 	'sys_timeb_h',
diff --git a/usr/src/test/libc-tests/tests/symbols/Makefile b/usr/src/test/libc-tests/tests/symbols/Makefile
index 8377810b83..8e30245adf 100644
--- a/usr/src/test/libc-tests/tests/symbols/Makefile
+++ b/usr/src/test/libc-tests/tests/symbols/Makefile
@@ -37,6 +37,7 @@ SYMTESTS = \
 	string_h \
 	strings_h \
 	sys_atomic_h \
+	sys_mman_h \
 	sys_stat_h \
 	sys_time_h \
 	sys_timeb_h \