diff -up shadow-4.1.5.1/man/lastlog.8.xml.unexpire shadow-4.1.5.1/man/lastlog.8.xml

--- shadow-4.1.5.1/man/lastlog.8.xml.unexpire	2012-05-25 13:45:28.000000000 +0200

+++ shadow-4.1.5.1/man/lastlog.8.xml	2016-04-28 15:09:11.026084219 +0200

@@ -105,6 +105,17 @@

       </varlistentry>

       <varlistentry>

 	<term>

+	  <option>-C</option>, <option>--clear</option>

+	</term>

+	<listitem>

+	  <para>

+	    Clear lastlog record of an user. This option can be used only together

+	    with <option>-u</option> (<option>--user</option>)).

+	  </para>

+	</listitem>

+      </varlistentry>

+      <varlistentry>

+	<term>

 	  <option>-h</option>, <option>--help</option>

 	</term>

 	<listitem>

@@ -124,6 +135,17 @@

 	  </para>

 	</listitem>

       </varlistentry>

+      <varlistentry>

+	<term>

+	  <option>-S</option>, <option>--set</option>

+	</term>

+	<listitem>

+	  <para>

+	    Set lastlog record of an user to the current time. This option can be

+	    used only together with <option>-u</option> (<option>--user</option>)).

+	  </para>

+	</listitem>

+      </varlistentry>

       <varlistentry>

 	<term>

 	  <option>-t</option>, <option>--time</option>

diff -up shadow-4.1.5.1/src/lastlog.c.unexpire shadow-4.1.5.1/src/lastlog.c

--- shadow-4.1.5.1/src/lastlog.c.unexpire	2011-11-06 21:54:18.000000000 +0100

+++ shadow-4.1.5.1/src/lastlog.c	2016-04-28 15:49:30.253371990 +0200

@@ -55,6 +55,13 @@

 #endif

 /*

+ * Needed for systems with older audit library.

+ */

+#ifndef AUDIT_ACCT_UNLOCK

+#define AUDIT_ACCT_UNLOCK       1136

+#endif

+

+/*

  * Global variables

  */

 const char *Prog;		/* Program name */

@@ -71,6 +78,8 @@ static struct stat statbuf;	/* fstat buf

 static bool uflg = false;	/* print only an user of range of users */

 static bool tflg = false;	/* print is restricted to most recent days */

 static bool bflg = false;	/* print excludes most recent days */

+static bool Cflg = false;	/* clear record for user */

+static bool Sflg = false;	/* set record for user */

 #define	NOW	(time ((time_t *) 0))

@@ -83,8 +92,10 @@ static /*@noreturn@*/void usage (int sta

 	                  "Options:\n"),

 	                Prog);

 	(void) fputs (_("  -b, --before DAYS             print only lastlog records older than DAYS\n"), usageout);

+	(void) fputs (_("  -C, --clear                   clear lastlog record of an user (usable only with -u)\n"), usageout);

 	(void) fputs (_("  -h, --help                    display this help message and exit\n"), usageout);

 	(void) fputs (_("  -R, --root CHROOT_DIR         directory to chroot into\n"), usageout);

+	(void) fputs (_("  -S, --set                     set lastlog record to current time (usable only with -u)\n"), usageout);

 	(void) fputs (_("  -t, --time DAYS               print only lastlog records more recent than DAYS\n"), usageout);

 	(void) fputs (_("  -u, --user LOGIN              print lastlog record of the specified LOGIN\n"), usageout);

 	(void) fputs ("\n", usageout);

@@ -194,6 +205,80 @@ static void print (void)

 	}

 }

+static void update_one (/*@null@*/const struct passwd *pw)

+{

+	off_t offset;

+	struct lastlog ll;

+	int err;

+

+	if (NULL == pw) {

+		return;

+	}

+

+	offset = (off_t) pw->pw_uid * sizeof (ll);

+	/* fseeko errors are not really relevant for us. */

+	err = fseeko (lastlogfile, offset, SEEK_SET);

+	assert (0 == err);

+

+	memzero (&ll, sizeof (ll));

+

+	if (Sflg) {

+		ll.ll_time = NOW;

+#ifdef HAVE_LL_HOST

+		strcpy (ll.ll_host, "localhost");

+#endif

+		strcpy (ll.ll_line, "lastlog");

+#ifdef WITH_AUDIT

+		audit_logger (AUDIT_ACCT_UNLOCK, Prog,

+			"clearing-lastlog",

+			pw->pw_name, (unsigned int) pw->pw_uid, SHADOW_AUDIT_SUCCESS);

+#endif

+	}

+#ifdef WITH_AUDIT

+	else {

+		audit_logger (AUDIT_ACCT_UNLOCK, Prog,

+			"refreshing-lastlog",

+			pw->pw_name, (unsigned int) pw->pw_uid, SHADOW_AUDIT_SUCCESS);

+	}

+#endif

+

+	if (fwrite (&ll, sizeof(ll), 1, lastlogfile) != 1) {

+			fprintf (stderr,

+			         _("%s: Failed to update the entry for UID %lu\n"),

+			         Prog, (unsigned long int)pw->pw_uid);

+			exit (EXIT_FAILURE);

+	}

+}

+

+static void update (void)

+{

+	const struct passwd *pwent;

+

+	if (!uflg) /* safety measure */

+		return;

+

+	if (has_umin && has_umax && (umin == umax)) {

+		update_one (getpwuid ((uid_t)umin));

+	} else {

+		setpwent ();

+		while ( (pwent = getpwent ()) != NULL ) {

+			if ((has_umin && (pwent->pw_uid < (uid_t)umin))

+				|| (has_umax && (pwent->pw_uid > (uid_t)umax))) {

+				continue;

+			}

+			update_one (pwent);

+		}

+		endpwent ();

+	}

+

+	if (fflush (lastlogfile) != 0 || fsync (fileno (lastlogfile)) != 0) {

+			fprintf (stderr,

+			         _("%s: Failed to update the lastlog file\n"),

+			         Prog);

+			exit (EXIT_FAILURE);

+	}

+}

+

 int main (int argc, char **argv)

 {

 	/*

@@ -208,18 +293,24 @@ int main (int argc, char **argv)

 	process_root_flag ("-R", argc, argv);

+#ifdef WITH_AUDIT

+	audit_help_open ();

+#endif

+

 	{

 		int c;

 		static struct option const longopts[] = {

 			{"before", required_argument, NULL, 'b'},

+			{"clear",  no_argument,       NULL, 'C'},

 			{"help",   no_argument,       NULL, 'h'},

 			{"root",   required_argument, NULL, 'R'},

+			{"set",    no_argument,       NULL, 'S'},

 			{"time",   required_argument, NULL, 't'},

 			{"user",   required_argument, NULL, 'u'},

 			{NULL, 0, NULL, '\0'}

 		};

-		while ((c = getopt_long (argc, argv, "b:hR:t:u:", longopts,

+		while ((c = getopt_long (argc, argv, "b:ChR:St:u:", longopts,

 		                         NULL)) != -1) {

 			switch (c) {

 			case 'b':

@@ -235,11 +326,21 @@ int main (int argc, char **argv)

 				bflg = true;

 				break;

 			}

+			case 'C':

+			{

+				Cflg = true;

+				break;

+			}

 			case 'h':

 				usage (EXIT_SUCCESS);

 				/*@notreached@*/break;

 			case 'R': /* no-op, handled in process_root_flag () */

 				break;

+			case 'S':

+			{

+				Sflg = true;

+				break;

+			}

 			case 't':

 			{

 				unsigned long days;

@@ -294,9 +395,21 @@ int main (int argc, char **argv)

 			         Prog, argv[optind]);

 			usage (EXIT_FAILURE);

 		}

+		if (Cflg && Sflg) {

+			fprintf (stderr,

+			         _("%s: Option -C cannot be used together with option -S\n"),

+			         Prog);

+			usage (EXIT_FAILURE);

+		}

+		if ((Cflg || Sflg) && !uflg) {

+			fprintf (stderr,

+			         _("%s: Options -C and -S require option -u to specify the user\n"),

+			         Prog);

+			usage (EXIT_FAILURE);

+		}

 	}

-	lastlogfile = fopen (LASTLOG_FILE, "r");

+	lastlogfile = fopen (LASTLOG_FILE, (Cflg || Sflg)?"r+":"r");

 	if (NULL == lastlogfile) {

 		perror (LASTLOG_FILE);

 		exit (EXIT_FAILURE);

@@ -310,7 +423,10 @@ int main (int argc, char **argv)

 		exit (EXIT_FAILURE);

 	}

-	print ();

+	if (Cflg || Sflg)

+		update ();

+	else

+		print ();

 	(void) fclose (lastlogfile);

diff -up shadow-4.1.5.1/src/Makefile.am.unexpire shadow-4.1.5.1/src/Makefile.am

--- shadow-4.1.5.1/src/Makefile.am.unexpire	2011-11-18 22:23:30.000000000 +0100

+++ shadow-4.1.5.1/src/Makefile.am	2016-04-28 15:09:11.027084241 +0200

@@ -90,6 +90,7 @@ groupmod_LDADD = $(LDADD) $(LIBPAM_SUID)

 grpck_LDADD    = $(LDADD) $(LIBSELINUX)

 grpconv_LDADD  = $(LDADD) $(LIBSELINUX)

 grpunconv_LDADD = $(LDADD) $(LIBSELINUX)

+lastlog_LDADD   = $(LDADD) $(LIBAUDIT)

 login_SOURCES  = \

 	login.c \

 	login_nopam.c

diff -up shadow-4.1.5.1/src/Makefile.in.unexpire shadow-4.1.5.1/src/Makefile.in

--- shadow-4.1.5.1/src/Makefile.in.unexpire	2012-05-25 13:56:51.000000000 +0200

+++ shadow-4.1.5.1/src/Makefile.in	2016-04-28 15:09:11.027084241 +0200

@@ -162,7 +162,7 @@ id_DEPENDENCIES = $(am__DEPENDENCIES_1)

 	$(top_builddir)/lib/libshadow.la

 lastlog_SOURCES = lastlog.c

 lastlog_OBJECTS = lastlog.$(OBJEXT)

-lastlog_LDADD = $(LDADD)

+lastlog_LDADD = $(LDADD) $(LIBAUDIT)

 lastlog_DEPENDENCIES = $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) \

 	$(top_builddir)/libmisc/libmisc.a \

 	$(top_builddir)/lib/libshadow.la