libselinux: Fix const-ness of parameters & make usage() methods static

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Dan Walsh <dwalsh@redhat.com>

libselinux/utils/getconlist.c

@@ -9,7 +9,7 @@
 #include <selinux/selinux.h>
 #include <selinux/get_context_list.h>
 
-void usage(char *name, char *detail, int rc)
+static void usage(const char *name, const char *detail, int rc)
 {
 	fprintf(stderr, "usage:  %s [-l level] user [context]\n", name);
 	if (detail)

libselinux/utils/getdefaultcon.c

@@ -9,7 +9,7 @@
 #include <selinux/selinux.h>
 #include <selinux/get_context_list.h>
 
-void usage(char *name, char *detail, int rc)
+static void usage(const char *name, const char *detail, int rc)
 {
 	fprintf(stderr, "usage:  %s [-l level] user fromcon\n", name);
 	if (detail)

libselinux/utils/getsebool.c

@@ -6,7 +6,7 @@
 #include <string.h>
 #include <selinux/selinux.h>
 
-void usage(const char *progname)
+static void usage(const char *progname)
 {
 	fprintf(stderr, "usage:  %s -a or %s boolean...\n", progname, progname);
 	exit(1);

libselinux/utils/matchpathcon.c

@@ -13,7 +13,7 @@
 #include <stdlib.h>
 
 
-void usage(const char *progname)
+static void usage(const char *progname)
 {
 	fprintf(stderr,
 		"usage:  %s [-N] [-n] [-f file_contexts] [-p prefix] [-Vq] path...\n",
@@ -21,7 +21,7 @@ void usage(const char *progname)
 	exit(1);
 }
 
-int printmatchpathcon(char *path, int header, int mode)
+static int printmatchpathcon(const char *path, int header, int mode)
 {
 	char *buf;
 	int rc = matchpathcon(path, mode, &buf);

libselinux/utils/selinux_check_securetty_context.c

@@ -9,7 +9,7 @@
 #include <sys/errno.h>
 #include <selinux/selinux.h>
 
-void usage(const char *progname)
+static void usage(const char *progname)
 {
 	fprintf(stderr, "usage:  %s tty_context...\n", progname);
 	exit(1);

libselinux/utils/selinuxexeccon.c

@@ -9,7 +9,7 @@
 #include <selinux/flask.h>
 #include <selinux/selinux.h>
 
-void usage(char *name, char *detail, int rc)
+static void usage(const char *name, const char *detail, int rc)
 {
 	fprintf(stderr, "usage:  %s command [ fromcon ]\n", name);
 	if (detail)

libselinux/utils/setenforce.c

@@ -6,7 +6,7 @@
 #include <strings.h>
 #include <selinux/selinux.h>
 
-void usage(const char *progname)
+static void usage(const char *progname)
 {
 	fprintf(stderr, "usage:  %s [ Enforcing | Permissive | 1 | 0 ]\n",
 		progname);

libselinux/utils/togglesebool.c

@@ -10,7 +10,7 @@
 
 /* Attempt to rollback the transaction. No need to check error
    codes since this is rolling back something that blew up. */
-void rollback(int argc, char **argv)
+static void rollback(int argc, char **argv)
 {
 	int i;