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diff --git a/include/sudo_util.h b/include/sudo_util.h
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+/*
+ * Copyright (c) 2013-2018 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef SUDO_UTIL_H
+#define SUDO_UTIL_H
+
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif /* HAVE_STDBOOL_H */
+
+#ifndef TIME_T_MAX
+# if SIZEOF_TIME_T == 8
+# define TIME_T_MAX LLONG_MAX
+# else
+# define TIME_T_MAX INT_MAX
+# endif
+#endif
+
+/*
+ * Macros for operating on struct timeval.
+ */
+#define sudo_timevalclear(tv) ((tv)->tv_sec = (tv)->tv_usec = 0)
+
+#define sudo_timevalisset(tv) ((tv)->tv_sec || (tv)->tv_usec)
+
+#define sudo_timevalcmp(tv1, tv2, op) \
+ (((tv1)->tv_sec == (tv2)->tv_sec) ? \
+ ((tv1)->tv_usec op (tv2)->tv_usec) : \
+ ((tv1)->tv_sec op (tv2)->tv_sec))
+
+#define sudo_timevaladd(tv1, tv2, tv3) \
+ do { \
+ (tv3)->tv_sec = (tv1)->tv_sec + (tv2)->tv_sec; \
+ (tv3)->tv_usec = (tv1)->tv_usec + (tv2)->tv_usec; \
+ if ((tv3)->tv_usec >= 1000000) { \
+ (tv3)->tv_sec++; \
+ (tv3)->tv_usec -= 1000000; \
+ } \
+ } while (0)
+
+#define sudo_timevalsub(tv1, tv2, tv3) \
+ do { \
+ (tv3)->tv_sec = (tv1)->tv_sec - (tv2)->tv_sec; \
+ (tv3)->tv_usec = (tv1)->tv_usec - (tv2)->tv_usec; \
+ if ((tv3)->tv_usec < 0) { \
+ (tv3)->tv_sec--; \
+ (tv3)->tv_usec += 1000000; \
+ } \
+ } while (0)
+
+#ifndef TIMEVAL_TO_TIMESPEC
+# define TIMEVAL_TO_TIMESPEC(tv, ts) \
+ do { \
+ (ts)->tv_sec = (tv)->tv_sec; \
+ (ts)->tv_nsec = (tv)->tv_usec * 1000; \
+ } while (0)
+#endif
+
+/*
+ * Macros for operating on struct timespec.
+ */
+#define sudo_timespecclear(ts) ((ts)->tv_sec = (ts)->tv_nsec = 0)
+
+#define sudo_timespecisset(ts) ((ts)->tv_sec || (ts)->tv_nsec)
+
+#define sudo_timespeccmp(ts1, ts2, op) \
+ (((ts1)->tv_sec == (ts2)->tv_sec) ? \
+ ((ts1)->tv_nsec op (ts2)->tv_nsec) : \
+ ((ts1)->tv_sec op (ts2)->tv_sec))
+
+#define sudo_timespecadd(ts1, ts2, ts3) \
+ do { \
+ (ts3)->tv_sec = (ts1)->tv_sec + (ts2)->tv_sec; \
+ (ts3)->tv_nsec = (ts1)->tv_nsec + (ts2)->tv_nsec; \
+ while ((ts3)->tv_nsec >= 1000000000) { \
+ (ts3)->tv_sec++; \
+ (ts3)->tv_nsec -= 1000000000; \
+ } \
+ } while (0)
+
+#define sudo_timespecsub(ts1, ts2, ts3) \
+ do { \
+ (ts3)->tv_sec = (ts1)->tv_sec - (ts2)->tv_sec; \
+ (ts3)->tv_nsec = (ts1)->tv_nsec - (ts2)->tv_nsec; \
+ while ((ts3)->tv_nsec < 0) { \
+ (ts3)->tv_sec--; \
+ (ts3)->tv_nsec += 1000000000; \
+ } \
+ } while (0)
+
+#ifndef TIMESPEC_TO_TIMEVAL
+# define TIMESPEC_TO_TIMEVAL(tv, ts) \
+ do { \
+ (tv)->tv_sec = (ts)->tv_sec; \
+ (tv)->tv_usec = (ts)->tv_nsec / 1000; \
+ } while (0)
+#endif
+
+/*
+ * The timespec version of st_mtime may vary on different platforms.
+ */
+#if defined(HAVE_ST_MTIM)
+# if defined(HAVE_ST__TIM)
+# define SUDO_ST_MTIM st_mtim.st__tim
+# else
+# define SUDO_ST_MTIM st_mtim
+# endif
+#elif defined(HAVE_ST_MTIMESPEC)
+# define SUDO_ST_MTIM st_mtimespec
+#endif
+
+/*
+ * Macro to extract mtime as timespec.
+ * If there is no way to set the timestamp using nanosecond precision,
+ * we only fetch microsecond precision. Otherwise there is a mismatch
+ * between the timestamp we read and the one we wrote.
+ */
+#if defined(SUDO_ST_MTIM)
+# if defined(HAVE_FUTIMENS) && defined(HAVE_UTIMENSAT)
+# define mtim_get(_x, _y) do { (_y).tv_sec = (_x)->SUDO_ST_MTIM.tv_sec; (_y).tv_nsec = (_x)->SUDO_ST_MTIM.tv_nsec; } while (0)
+# else
+# define mtim_get(_x, _y) do { (_y).tv_sec = (_x)->SUDO_ST_MTIM.tv_sec; (_y).tv_nsec = ((_x)->SUDO_ST_MTIM.tv_nsec / 1000) * 1000; } while (0)
+# endif
+#elif defined(HAVE_ST_NMTIME)
+# define mtim_get(_x, _y) do { (_y).tv_sec = (_x)->st_mtime; (_y).tv_nsec = (_x)->st_nmtime; } while (0)
+#else
+# define mtim_get(_x, _y) do { (_y).tv_sec = (_x)->st_mtime; (_y).tv_nsec = 0; } while (0)
+#endif /* HAVE_ST_MTIM */
+
+/* Bit map macros. */
+#define sudo_setbit(_a, _i) ((_a)[(_i) / NBBY] |= 1 << ((_i) % NBBY))
+#define sudo_clrbit(_a, _i) ((_a)[(_i) / NBBY] &= ~(1<<((_i) % NBBY)))
+#define sudo_isset(_a, _i) ((_a)[(_i) / NBBY] & (1<<((_i) % NBBY)))
+#define sudo_isclr(_a, _i) (((_a)[(_i) / NBBY] & (1<<((_i) % NBBY))) == 0)
+
+/* sudo_parseln() flags */
+#define PARSELN_COMM_BOL 0x01 /* comments only at begining of line */
+#define PARSELN_CONT_IGN 0x02 /* ignore line continuation char */
+
+/*
+ * Macros to quiet gcc's warn_unused_result attribute.
+ */
+#ifdef __GNUC__
+# define ignore_result(x) do { \
+ __typeof__(x) y = (x); \
+ (void)y; \
+} while(0)
+#else
+# define ignore_result(x) (void)(x)
+#endif
+
+/* aix.c */
+__dso_public int aix_getauthregistry_v1(char *user, char *saved_registry);
+#define aix_getauthregistry(_a, _b) aix_getauthregistry_v1((_a), (_b))
+__dso_public int aix_prep_user_v1(char *user, const char *tty);
+#define aix_prep_user(_a, _b) aix_prep_user_v1((_a), (_b))
+__dso_public int aix_restoreauthdb_v1(void);
+#define aix_restoreauthdb() aix_restoreauthdb_v1()
+__dso_public int aix_setauthdb_v1(char *user);
+__dso_public int aix_setauthdb_v2(char *user, char *registry);
+#define aix_setauthdb(_a, _b) aix_setauthdb_v2((_a), (_b))
+
+/* gethostname.c */
+__dso_public char *sudo_gethostname_v1(void);
+#define sudo_gethostname() sudo_gethostname_v1()
+
+/* gettime.c */
+__dso_public int sudo_gettime_awake_v1(struct timespec *ts);
+#define sudo_gettime_awake(_a) sudo_gettime_awake_v1((_a))
+__dso_public int sudo_gettime_mono_v1(struct timespec *ts);
+#define sudo_gettime_mono(_a) sudo_gettime_mono_v1((_a))
+__dso_public int sudo_gettime_real_v1(struct timespec *ts);
+#define sudo_gettime_real(_a) sudo_gettime_real_v1((_a))
+
+/* gidlist.c */
+__dso_public int sudo_parse_gids_v1(const char *gidstr, const gid_t *basegid, GETGROUPS_T **gidsp);
+#define sudo_parse_gids(_a, _b, _c) sudo_parse_gids_v1((_a), (_b), (_c))
+
+/* getgrouplist.c */
+__dso_public int sudo_getgrouplist2_v1(const char *name, gid_t basegid, GETGROUPS_T **groupsp, int *ngroupsp);
+#define sudo_getgrouplist2(_a, _b, _c, _d) sudo_getgrouplist2_v1((_a), (_b), (_c), (_d))
+
+/* key_val.c */
+__dso_public char *sudo_new_key_val_v1(const char *key, const char *value);
+#define sudo_new_key_val(_a, _b) sudo_new_key_val_v1((_a), (_b))
+
+/* locking.c */
+#define SUDO_LOCK 1 /* lock a file */
+#define SUDO_TLOCK 2 /* test & lock a file (non-blocking) */
+#define SUDO_UNLOCK 4 /* unlock a file */
+__dso_public bool sudo_lock_file_v1(int fd, int action);
+#define sudo_lock_file(_a, _b) sudo_lock_file_v1((_a), (_b))
+__dso_public bool sudo_lock_region_v1(int fd, int action, off_t len);
+#define sudo_lock_region(_a, _b, _c) sudo_lock_region_v1((_a), (_b), (_c))
+
+/* parseln.c */
+__dso_public ssize_t sudo_parseln_v1(char **buf, size_t *bufsize, unsigned int *lineno, FILE *fp);
+__dso_public ssize_t sudo_parseln_v2(char **buf, size_t *bufsize, unsigned int *lineno, FILE *fp, int flags);
+#define sudo_parseln(_a, _b, _c, _d, _e) sudo_parseln_v2((_a), (_b), (_c), (_d), (_e))
+
+/* progname.c */
+__dso_public void initprogname(const char *);
+
+/* secure_path.c */
+#define SUDO_PATH_SECURE 0
+#define SUDO_PATH_MISSING -1
+#define SUDO_PATH_BAD_TYPE -2
+#define SUDO_PATH_WRONG_OWNER -3
+#define SUDO_PATH_WORLD_WRITABLE -4
+#define SUDO_PATH_GROUP_WRITABLE -5
+struct stat;
+__dso_public int sudo_secure_dir_v1(const char *path, uid_t uid, gid_t gid, struct stat *sbp);
+#define sudo_secure_dir(_a, _b, _c, _d) sudo_secure_dir_v1((_a), (_b), (_c), (_d))
+__dso_public int sudo_secure_file_v1(const char *path, uid_t uid, gid_t gid, struct stat *sbp);
+#define sudo_secure_file(_a, _b, _c, _d) sudo_secure_file_v1((_a), (_b), (_c), (_d))
+
+/* setgroups.c */
+__dso_public int sudo_setgroups_v1(int ngids, const GETGROUPS_T *gids);
+#define sudo_setgroups(_a, _b) sudo_setgroups_v1((_a), (_b))
+
+/* strsplit.c */
+__dso_public const char *sudo_strsplit_v1(const char *str, const char *endstr, const char *sep, const char **last);
+#define sudo_strsplit(_a, _b, _c, _d) sudo_strsplit_v1(_a, _b, _c, _d)
+
+/* strtobool.c */
+__dso_public int sudo_strtobool_v1(const char *str);
+#define sudo_strtobool(_a) sudo_strtobool_v1((_a))
+
+/* strtoid.c */
+__dso_public id_t sudo_strtoid_v1(const char *str, const char *sep, char **endp, const char **errstr);
+#define sudo_strtoid(_a, _b, _c, _d) sudo_strtoid_v1((_a), (_b), (_c), (_d))
+
+/* strtomode.c */
+__dso_public int sudo_strtomode_v1(const char *cp, const char **errstr);
+#define sudo_strtomode(_a, _b) sudo_strtomode_v1((_a), (_b))
+
+/* sudo_printf.c */
+extern int (*sudo_printf)(int msg_type, const char *fmt, ...);
+
+/* term.c */
+__dso_public bool sudo_term_cbreak_v1(int fd);
+#define sudo_term_cbreak(_a) sudo_term_cbreak_v1((_a))
+__dso_public bool sudo_term_copy_v1(int src, int dst);
+#define sudo_term_copy(_a, _b) sudo_term_copy_v1((_a), (_b))
+__dso_public bool sudo_term_noecho_v1(int fd);
+#define sudo_term_noecho(_a) sudo_term_noecho_v1((_a))
+__dso_public bool sudo_term_raw_v1(int fd, int isig);
+#define sudo_term_raw(_a, _b) sudo_term_raw_v1((_a), (_b))
+__dso_public bool sudo_term_restore_v1(int fd, bool flush);
+#define sudo_term_restore(_a, _b) sudo_term_restore_v1((_a), (_b))
+
+/* ttyname_dev.c */
+__dso_public char *sudo_ttyname_dev_v1(dev_t tdev, char *name, size_t namelen);
+#define sudo_ttyname_dev(_a, _b, _c) sudo_ttyname_dev_v1((_a), (_b), (_c))
+
+/* ttysize.c */
+__dso_public void sudo_get_ttysize_v1(int *rowp, int *colp);
+#define sudo_get_ttysize(_a, _b) sudo_get_ttysize_v1((_a), (_b))
+
+#endif /* SUDO_UTIL_H */
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