Make a few internal symbols static and add a Symbols.map version script

to control which symbols are exported from the shared library.

ok guenther@, deraadt@, jca@

1 files changed, 92 insertions, 0 deletions

diff --git a/lib/libutil/Symbols.map b/lib/libutil/Symbols.map
new file mode 100644
index 00000000000..942ea2794fc
--- /dev/null
+++ b/lib/libutil/Symbols.map
@@ -0,0 +1,92 @@
+/*
+ * In order to guarantee that static and shared archs see the same "public"
+ * symbols, this file should always include all the non-static symbols that
+ * are in the application namespace.  So, if a symbol starts with a letter,
+ * don't delete it from here without either making it static or renaming it
+ * to have a leading underbar.
+ */
+
+{
+	global:
+		bcrypt_pbkdf;
+		fdforkpty;
+		fdopenpty;
+		fmt_scaled;
+		forkpty;
+		fparseln;
+		getmaxpartitions;
+		getptmfd;
+		getrawpartition;
+		ibuf_add;
+		ibuf_close;
+		ibuf_dynamic;
+		ibuf_free;
+		ibuf_left;
+		ibuf_open;
+		ibuf_reserve;
+		ibuf_seek;
+		ibuf_size;
+		ibuf_write;
+		imsg_add;
+		imsg_clear;
+		imsg_close;
+		imsg_compose;
+		imsg_composev;
+		imsg_create;
+		imsg_fd_overhead;
+		imsg_flush;
+		imsg_free;
+		imsg_get;
+		imsg_init;
+		imsg_read;
+		isduid;
+		login;
+		login_check_expire;
+		login_fbtab;
+		login_tty;
+		logout;
+		logwtmp;
+		msgbuf_clear;
+		msgbuf_drain;
+		msgbuf_init;
+		msgbuf_write;
+		ohash_create_entry;
+		ohash_delete;
+		ohash_entries;
+		ohash_find;
+		ohash_first;
+		ohash_init;
+		ohash_insert;
+		ohash_interval;
+		ohash_lookup_interval;
+		ohash_lookup_memory;
+		ohash_next;
+		ohash_qlookup;
+		ohash_qlookupi;
+		ohash_remove;
+		opendev;
+		opendisk;
+		openpty;
+		pidfile;
+		pkcs5_pbkdf2;
+		pw_abort;
+		pw_copy;
+		pw_edit;
+		pw_error;
+		pw_file;
+		pw_init;
+		pw_lock;
+		pw_mkdb;
+		pw_prompt;
+		pw_scan;
+		pw_setdir;
+		readlabelfs;
+		scan_scaled;
+		uu_lock;
+		uu_lock_txfr;
+		uu_lockerr;
+		uu_unlock;
+
+	local:
+		*;
+};