Ensure that getpwent() is used in setpwent(), getpwent(),

endpwend() sequences (ditto for getgrent(), getspent(), and
getsgent()). The only real (minor) issue was in login, which kept
the passwd file open.
* libmisc/entry.c: Remove unneeded setspent() and endspent() (only
  getspnam is called in the middle).
* libmisc/find_new_ids.c: Make sure to close the password and
  group files with endpwent() and endgrent().
* libmisc/pwdcheck.c: Remove unneeded endspent() (only getspnam()
  is called before).
* src/lastlog.c, src/passwd.c, src/groupmod.c, src/faillog.c,
  src/groups.c: Make sure to close
  the password file with endpwent().
* src/login.c: Remove unneeded setpwent() (only xgetpwnam is
  called before).
* src/login.c, src/newgrp.c: Fix typos in comments.

src/faillog.c

@@ -170,6 +170,7 @@ static void reset (void)
 		while ( (pwent = getpwent ()) != NULL ) {
 			reset_one (pwent->pw_uid);
 		}
+		endpwent ();
 	}
 }
 
@@ -246,8 +247,10 @@ static void setmax (int max)
 		setmax_one (user, max);
 	} else {
 		setpwent ();
-		while ((pwent = getpwent ()))
+		while ( (pwent = getpwent ()) != NULL ) {
 			setmax_one (pwent->pw_uid, max);
+		}
+		endpwent ();
 	}
 }
 
@@ -288,8 +291,10 @@ static void set_locktime (long locktime)
 		set_locktime_one (user, locktime);
 	} else {
 		setpwent ();
-		while ((pwent = getpwent ()))
+		while ( (pwent = getpwent ()) != NULL ) {
 			set_locktime_one (pwent->pw_uid, locktime);
+		}
+		endpwent ();
 	}
 }
 

src/groupmod.c

@@ -547,6 +547,7 @@ void update_primary_groups (gid_t ogid, gid_t ngid)
 			}
 		}
 	}
+	endpwent ();
 }
 
 /*

src/groups.c

@@ -57,13 +57,12 @@ static void print_groups (const char *member)
 	struct passwd *pwd;
 	int flag = 0;
 
-	setgrent ();
-
 	/* local, no need for xgetpwnam */
 	if ((pwd = getpwnam (member)) == 0) {
 		fprintf (stderr, _("%s: unknown user %s\n"), Prog, member);
 		exit (1);
 	}
+	setgrent ();
 	while ((grp = getgrent ())) {
 		if (is_on_list (grp->gr_mem, member)) {
 			if (groups++)
@@ -74,6 +73,7 @@ static void print_groups (const char *member)
 				flag = 1;
 		}
 	}
+	endgrent ();
 	/* local, no need for xgetgrgid */
 	if (!flag && (grp = getgrgid (pwd->pw_gid))) {
 		if (groups++)

src/lastlog.c

@@ -128,7 +128,7 @@ static void print (void)
 	uid_t user;
 
 	setpwent ();
-	while ((pwent = getpwent ())) {
+	while ( (pwent = getpwent ()) != NULL ) {
 		user = pwent->pw_uid;
 		if (uflg &&
 		    ((umin != -1 && user < (uid_t)umin) ||
@@ -149,6 +149,7 @@ static void print (void)
 
 		print_one (pwent);
 	}
+	endpwent ();
 }
 
 int main (int argc, char **argv)

src/login.c

@@ -738,7 +738,6 @@ int main (int argc, char **argv)
 		 */
 		retcode =
 		    pam_get_item (pamh, PAM_USER, (const void **)ptr_pam_user);
-		setpwent ();
 		pwd = xgetpwnam (pam_user);
 		if (!pwd) {
 			SYSLOG ((LOG_ERR, "xgetpwnam(%s) failed",
@@ -962,7 +961,7 @@ int main (int argc, char **argv)
 	if (pwent.pw_shell[0] == '*') {	/* subsystem root */
 		pwent.pw_shell++;	/* skip the '*' */
 		subsystem (&pwent);	/* figure out what to execute */
-		subroot++;	/* say i was here again */
+		subroot++;	/* say I was here again */
 		endpwent ();	/* close all of the file which were */
 		endgrent ();	/* open in the original rooted file */
 		endspent ();	/* system. they will be re-opened */

src/newgrp.c

@@ -695,7 +695,7 @@ int main (int argc, char **argv)
 		prog = "/bin/sh";
 
 	/*
-	 * Now i try to find the basename of the login shell. This will
+	 * Now I try to find the basename of the login shell. This will
 	 * become argv[0] of the spawned command.
 	 */
 	cp = Basename ((char *) prog);

src/passwd.c

@@ -848,8 +848,10 @@ int main (int argc, char **argv)
 			exit (E_NOPERM);
 		}
 		setpwent ();
-		while ((pw = getpwent ()))
+		while ( (pw = getpwent ()) != NULL ) {
 			print_status (pw);
+		}
+		endpwent ();
 		exit (E_SUCCESS);
 	}
 #if 0