Index: sys/sys/capsicum_misc.h
===================================================================
--- /dev/null
+++ sys/sys/capsicum_misc.h
@@ -0,0 +1,91 @@
+/*-
+ * Copyright (c) 2016 Mariusz Zaborski <oshogbo@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef	_CAPSICUM_MISC_
+#define	_CAPSICUM_MISC_
+
+#include <sys/param.h>
+#include <sys/capsicum.h>
+
+#include <errno.h>
+#include <nl_types.h>
+#include <stdbool.h>
+#include <termios.h>
+#include <time.h>
+#include <unistd.h>
+
+static inline bool
+capm_limit_stdout(int fd)
+{
+        cap_rights_t rights;
+	unsigned long cmds[] = { TIOCGETA };
+
+	cap_rights_init(&rights, CAP_FSTAT, CAP_IOCTL, CAP_READ, CAP_WRITE);
+	if (cap_rights_limit(fd, &rights) < 0 && errno != ENOSYS)
+		return (false);
+
+	if (cap_ioctls_limit(fd, cmds, nitems(cmds)) < 0 && errno != ENOSYS)
+		return (false);
+
+	return (true);
+}
+
+static inline bool
+capm_limit_stdin(int fd)
+{
+        cap_rights_t rights;
+
+	cap_rights_init(&rights, CAP_FSTAT, CAP_READ);
+
+	return (cap_rights_limit(fd, &rights) == 0 || errno == ENOSYS);
+}
+
+static inline bool
+capm_limit_stdio(void)
+{
+
+	return (capm_limit_stdin(STDIN_FILENO) &&
+	    capm_limit_stdout(STDOUT_FILENO) &&
+	    capm_limit_stdout(STDERR_FILENO));
+}
+
+static inline void
+capm_time(void)
+{
+
+	tzset();
+}
+
+static inline void
+capm_err(void)
+{
+
+	(void)catopen("libc", NL_CAT_LOCALE);
+}
+
+#endif /* _CAPSICUM_MISC_ */
Index: usr.bin/cmp/cmp.c
===================================================================
--- usr.bin/cmp/cmp.c
+++ usr.bin/cmp/cmp.c
@@ -44,6 +44,7 @@
 
 #include <sys/types.h>
 #include <sys/capsicum.h>
+#include <sys/capsicum_misc.h>
 #include <sys/stat.h>
 
 #include <err.h>
@@ -53,7 +54,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <termios.h>
 #include <unistd.h>
 
 #include "extern.h"
@@ -70,7 +70,6 @@
 	int ch, fd1, fd2, oflag, special;
 	const char *file1, *file2;
 	cap_rights_t rights;
-	unsigned long cmd;
 	uint32_t fcntls;
 
 	oflag = O_RDONLY;
@@ -165,20 +164,12 @@
 	if (cap_fcntls_limit(fd2, fcntls) < 0 && errno != ENOSYS)
 		err(ERR_EXIT, "unable to limit fcntls for %s", file2);
 
-	cap_rights_init(&rights, CAP_FSTAT, CAP_WRITE, CAP_IOCTL);
-	if (cap_rights_limit(STDOUT_FILENO, &rights) < 0 && errno != ENOSYS)
-		err(ERR_EXIT, "unable to limit rights for stdout");
+	if (capm_limit_stdout(STDOUT_FILENO))
+		err(ERR_EXIT, "unable to limit stdout");
+	if (capm_limit_stdout(STDERR_FILENO))
+		err(ERR_EXIT, "unable to limit stderr");
 
-	/* Required for printf(3) via isatty(3). */
-	cmd = TIOCGETA;
-	if (cap_ioctls_limit(STDOUT_FILENO, &cmd, 1) < 0 && errno != ENOSYS)
-		err(ERR_EXIT, "unable to limit ioctls for stdout");
-
-	/*
-	 * Cache NLS data, for strerror, for err(3), before entering capability
-	 * mode.
-	 */
-	(void)catopen("libc", NL_CAT_LOCALE);
+	capm_err();
 
 	if (cap_enter() < 0 && errno != ENOSYS)
 		err(ERR_EXIT, "unable to enter capability mode");
Index: usr.bin/col/col.c
===================================================================
--- usr.bin/col/col.c
+++ usr.bin/col/col.c
@@ -46,6 +46,7 @@
 __FBSDID("$FreeBSD$");
 
 #include <sys/capsicum.h>
+#include <sys/capsicum_misc.h>
 
 #include <err.h>
 #include <errno.h>
@@ -135,20 +136,11 @@
 	int nflushd_lines;		/* number of lines that were flushed */
 	int adjust, opt, warned, width;
 	const char *errstr;
-	cap_rights_t rights;
-	unsigned long cmd;
 
 	(void)setlocale(LC_CTYPE, "");
 
-	cap_rights_init(&rights, CAP_FSTAT, CAP_READ);
-	if (cap_rights_limit(STDIN_FILENO, &rights) < 0 && errno != ENOSYS)
-		err(1, "unable to limit rights for stdin");
-	cap_rights_init(&rights, CAP_FSTAT, CAP_WRITE, CAP_IOCTL);
-	if (cap_rights_limit(STDOUT_FILENO, &rights) < 0 && errno != ENOSYS)
-		err(1, "unable to limit rights for stdout");
-	cmd = TIOCGETA; /* required by isatty(3) in printf(3) */
-	if (cap_ioctls_limit(STDOUT_FILENO, &cmd, 1) < 0 && errno != ENOSYS)
-		err(1, "unable to limit ioctls for stdout");
+	if (capm_limit_stdio())
+		err(1, "unable to limit stdio");
 
 	if (cap_enter() < 0 && errno != ENOSYS)
 		err(1, "unable to enter capability mode");
Index: usr.bin/elfdump/elfdump.c
===================================================================
--- usr.bin/elfdump/elfdump.c
+++ usr.bin/elfdump/elfdump.c
@@ -31,6 +31,7 @@
 #include <sys/types.h>
 
 #include <sys/capsicum.h>
+#include <sys/capsicum_misc.h>
 #include <sys/elf32.h>
 #include <sys/elf64.h>
 #include <sys/endian.h>
@@ -44,7 +45,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <termios.h>
 #include <unistd.h>
 
 #define	ED_DYN		(1<<0)
@@ -505,7 +505,6 @@
 	u_int64_t name;
 	u_int64_t type;
 	struct stat sb;
-	unsigned long cmd;
 	u_int flags;
 	Elf32_Ehdr *e;
 	void *p;
@@ -573,14 +572,8 @@
 	cap_rights_init(&rights, CAP_MMAP_R);
 	if (cap_rights_limit(fd, &rights) < 0 && errno != ENOSYS)
 		err(1, "unable to limit rights for %s", *av);
-	cap_rights_limit(STDIN_FILENO, cap_rights_init(&rights));
-	cap_rights_init(&rights, CAP_FSTAT, CAP_IOCTL, CAP_WRITE);
-	cmd = TIOCGETA; /* required by isatty(3) in printf(3) */
-	if ((cap_rights_limit(STDOUT_FILENO, &rights) < 0 && errno != ENOSYS) ||
-	    (cap_ioctls_limit(STDOUT_FILENO, &cmd, 1) < 0 && errno != ENOSYS) ||
-	    (cap_rights_limit(STDERR_FILENO, &rights) < 0 && errno != ENOSYS) ||
-	    (cap_ioctls_limit(STDERR_FILENO, &cmd, 1) < 0 && errno != ENOSYS))
-		err(1, "unable to limit rights for stdout/stderr");
+	if (capm_limit_stdio())
+		err(1, "unable to limit rights for stdio");
 	if (cap_enter() < 0 && errno != ENOSYS)
 		err(1, "unable to enter capability mode");
 	e = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, fd, 0);
Index: usr.bin/tee/tee.c
===================================================================
--- usr.bin/tee/tee.c
+++ usr.bin/tee/tee.c
@@ -42,6 +42,7 @@
 #endif /* not lint */
 
 #include <sys/capsicum.h>
+#include <sys/capsicum_misc.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 
@@ -52,7 +53,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <termios.h>
 #include <unistd.h>
 
 typedef struct _list {
@@ -73,8 +73,6 @@
 	char *bp;
 	int append, ch, exitval;
 	char *buf;
-	cap_rights_t rights;
-	unsigned long cmd;
 #define	BSIZE (8 * 1024)
 
 	append = 0;
@@ -96,15 +94,11 @@
 	if ((buf = malloc(BSIZE)) == NULL)
 		err(1, "malloc");
 
-	cap_rights_init(&rights, CAP_READ, CAP_FSTAT);
-	if (cap_rights_limit(STDIN_FILENO, &rights) < 0 && errno != ENOSYS)
-		err(EXIT_FAILURE, "unable to limit rights for stdin");
-	cap_rights_init(&rights, CAP_WRITE, CAP_FSTAT, CAP_IOCTL);
-	if (cap_rights_limit(STDERR_FILENO, &rights) < 0 && errno != ENOSYS)
-		err(EXIT_FAILURE, "unable to limit rights for stderr");
-	cmd = TIOCGETA;
-	if (cap_ioctls_limit(STDERR_FILENO, &cmd, 1) < 0 && errno != ENOSYS)
-		err(EXIT_FAILURE, "unable to limit ioctls for stderr");
+	if (capm_limit_stdin(STDIN_FILENO))
+		err(EXIT_FAILURE, "unable to limit stdin");
+
+	if (capm_limit_stdout(STDERR_FILENO))
+		err(EXIT_FAILURE, "unable to limit stderr");
 
 	add(STDOUT_FILENO, "stdout");
 
@@ -148,19 +142,14 @@
 {
 	LIST *p;
 	cap_rights_t rights;
-	unsigned long cmd;
-
-	if (fd == STDOUT_FILENO)
-		cap_rights_init(&rights, CAP_WRITE, CAP_FSTAT, CAP_IOCTL);
-	else
-		cap_rights_init(&rights, CAP_WRITE, CAP_FSTAT);
-	if (cap_rights_limit(fd, &rights) < 0 && errno != ENOSYS)
-		err(EXIT_FAILURE, "unable to limit rights");
 
 	if (fd == STDOUT_FILENO) {
-		cmd = TIOCGETA;
-		if (cap_ioctls_limit(fd, &cmd, 1) < 0 && errno != ENOSYS)
-			err(EXIT_FAILURE, "unable to limit ioctls for stdout");
+		if (capm_limit_stdout(STDOUT_FILENO))
+			err(EXIT_FAILURE, "unable to limit stdout");
+	} else {
+		cap_rights_init(&rights, CAP_WRITE, CAP_FSTAT);
+		if (cap_rights_limit(fd, &rights) < 0 && errno != ENOSYS)
+			err(EXIT_FAILURE, "unable to limit rights");
 	}
 
 	if ((p = malloc(sizeof(LIST))) == NULL)
Index: usr.bin/tr/tr.c
===================================================================
--- usr.bin/tr/tr.c
+++ usr.bin/tr/tr.c
@@ -43,17 +43,16 @@
 
 #include <sys/types.h>
 #include <sys/capsicum.h>
+#include <sys/capsicum_misc.h>
 
 #include <ctype.h>
 #include <err.h>
-#include <errno.h>
 #include <limits.h>
 #include <locale.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <termios.h>
 #include <unistd.h>
 #include <wchar.h>
 #include <wctype.h>
@@ -72,8 +71,6 @@
 main(int argc, char **argv)
 {
 	static int carray[NCHARS_SB];
-	cap_rights_t rights;
-	unsigned long cmd;
 	struct cmap *map;
 	struct cset *delete, *squeeze;
 	int n, *p;
@@ -82,23 +79,8 @@
 
 	(void)setlocale(LC_ALL, "");
 
-	cap_rights_init(&rights, CAP_FSTAT, CAP_IOCTL, CAP_READ);
-	if (cap_rights_limit(STDIN_FILENO, &rights) < 0 && errno != ENOSYS)
-		err(1, "unable to limit rights for stdin");
-	cap_rights_init(&rights, CAP_FSTAT, CAP_IOCTL, CAP_WRITE);
-	if (cap_rights_limit(STDOUT_FILENO, &rights) < 0 && errno != ENOSYS)
-		err(1, "unable to limit rights for stdout");
-	if (cap_rights_limit(STDERR_FILENO, &rights) < 0 && errno != ENOSYS)
-		err(1, "unable to limit rights for stderr");
-
-	/* Required for isatty(3). */
-	cmd = TIOCGETA;
-	if (cap_ioctls_limit(STDIN_FILENO, &cmd, 1) < 0 && errno != ENOSYS)
-		err(1, "unable to limit ioctls for stdin");
-	if (cap_ioctls_limit(STDOUT_FILENO, &cmd, 1) < 0 && errno != ENOSYS)
-		err(1, "unable to limit ioctls for stdout");
-	if (cap_ioctls_limit(STDERR_FILENO, &cmd, 1) < 0 && errno != ENOSYS)
-		err(1, "unable to limit ioctls for stderr");
+	if (capm_limit_stdio())
+		err(1, "unable to limit stdio");
 
 	if (cap_enter() < 0 && errno != ENOSYS)
 		err(1, "unable to enter capability mode");