Merge sudo 1.9.6p1 from tip

--HG--
branch : 1.9

NEWS

@@ -1,3 +1,9 @@
+What's new in Sudo 1.9.6p1
+
+ * Fixed a regression introduced in sudo 1.9.6 that resulted in an
+   error message instead of a usage message when sudo is run with
+   no arguments.
+
 What's new in Sudo 1.9.6
 
  * Fixed a sudo_sendlog compilation problem with the AIX xlC compiler.

configure

@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.71 for sudo 1.9.6.
+# Generated by GNU Autoconf 2.71 for sudo 1.9.6p1.
 #
 # Report bugs to <https://bugzilla.sudo.ws/>.
 #
@@ -621,8 +621,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='sudo'
 PACKAGE_TARNAME='sudo'
-PACKAGE_VERSION='1.9.6'
-PACKAGE_STRING='sudo 1.9.6'
+PACKAGE_VERSION='1.9.6p1'
+PACKAGE_STRING='sudo 1.9.6p1'
 PACKAGE_BUGREPORT='https://bugzilla.sudo.ws/'
 PACKAGE_URL=''
 
@@ -1615,7 +1615,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures sudo 1.9.6 to adapt to many kinds of systems.
+\`configure' configures sudo 1.9.6p1 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1681,7 +1681,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of sudo 1.9.6:";;
+     short | recursive ) echo "Configuration of sudo 1.9.6p1:";;
    esac
   cat <<\_ACEOF
 
@@ -1964,7 +1964,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-sudo configure 1.9.6
+sudo configure 1.9.6p1
 generated by GNU Autoconf 2.71
 
 Copyright (C) 2021 Free Software Foundation, Inc.
@@ -2621,7 +2621,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by sudo $as_me 1.9.6, which was
+It was created by sudo $as_me 1.9.6p1, which was
 generated by GNU Autoconf 2.71.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -30207,7 +30207,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by sudo $as_me 1.9.6, which was
+This file was extended by sudo $as_me 1.9.6p1, which was
 generated by GNU Autoconf 2.71.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -30275,7 +30275,7 @@ ac_cs_config_escaped=`printf "%s\n" "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-sudo config.status 1.9.6
+sudo config.status 1.9.6p1
 configured by $0, generated by GNU Autoconf 2.71,
   with options \\"\$ac_cs_config\\"
 

configure.ac

@@ -18,7 +18,7 @@ dnl ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 dnl OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 dnl
 AC_PREREQ([2.59])
-AC_INIT([sudo], [1.9.6], [https://bugzilla.sudo.ws/], [sudo])
+AC_INIT([sudo], [1.9.6p1], [https://bugzilla.sudo.ws/], [sudo])
 AC_CONFIG_HEADERS([config.h pathnames.h])
 AC_CONFIG_SRCDIR([src/sudo.c])
 dnl

plugins/sudoers/policy.c

@@ -81,7 +81,7 @@ parse_bool(const char *line, int varlen, int *flags, int fval)
     }
 }
 
-#define RUN_VALID_FLAGS	(MODE_BACKGROUND|MODE_PRESERVE_ENV|MODE_RESET_HOME|MODE_LOGIN_SHELL|MODE_NONINTERACTIVE|MODE_IGNORE_TICKET|MODE_PRESERVE_GROUPS|MODE_SHELL|MODE_RUN)
+#define RUN_VALID_FLAGS	(MODE_BACKGROUND|MODE_PRESERVE_ENV|MODE_RESET_HOME|MODE_IMPLIED_SHELL|MODE_LOGIN_SHELL|MODE_NONINTERACTIVE|MODE_IGNORE_TICKET|MODE_PRESERVE_GROUPS|MODE_SHELL|MODE_RUN)
 #define EDIT_VALID_FLAGS	(MODE_NONINTERACTIVE|MODE_IGNORE_TICKET|MODE_EDIT)
 #define LIST_VALID_FLAGS	(MODE_NONINTERACTIVE|MODE_IGNORE_TICKET|MODE_LIST|MODE_CHECK)
 #define VALIDATE_VALID_FLAGS	(MODE_NONINTERACTIVE|MODE_IGNORE_TICKET|MODE_VALIDATE)