Add support for determining tty via sysctl on other BSD variants.

config.h.in

@@ -502,9 +502,15 @@
 /* Define to 1 if the system has the type `struct in6_addr'. */
 #undef HAVE_STRUCT_IN6_ADDR
 
-/* Define if your struct kinfo_proc has a ki_tdev field. */
+/* Define to 1 if `ki_tdev' is a member of `struct kinfo_proc'. */
 #undef HAVE_STRUCT_KINFO_PROC_KI_TDEV
 
+/* Define to 1 if `kp_eproc.e_tdev' is a member of `struct kinfo_proc'. */
+#undef HAVE_STRUCT_KINFO_PROC_KP_EPROC_E_TDEV
+
+/* Define to 1 if `p_tdev' is a member of `struct kinfo_proc'. */
+#undef HAVE_STRUCT_KINFO_PROC_P_TDEV
+
 /* Define if your struct sockadr has an sa_len field. */
 #undef HAVE_STRUCT_SOCKADDR_SA_LEN
 

configure

@@ -16317,16 +16317,56 @@ if test "x$ac_cv_func_sysctl" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_SYSCTL 1
 _ACEOF
- ac_fn_c_check_member "$LINENO" "struct kinfo_proc" "ki_tdev" "ac_cv_member_struct_kinfo_proc_ki_tdev" " #include <sys/param.h>
+ ac_fn_c_check_member "$LINENO" "struct kinfo_proc" "ki_tdev" "ac_cv_member_struct_kinfo_proc_ki_tdev" "
-      #include <sys/user.h>
+	#include <sys/param.h>
+	#include <sys/sysctl.h>
+	#include <sys/user.h>
 
 "
 if test "x$ac_cv_member_struct_kinfo_proc_ki_tdev" = xyes; then :
 
-$as_echo "#define HAVE_STRUCT_KINFO_PROC_KI_TDEV 1" >>confdefs.h
+cat >>confdefs.h <<_ACEOF
+#define HAVE_STRUCT_KINFO_PROC_KI_TDEV 1
+_ACEOF
+
+
+else
+
+	ac_fn_c_check_member "$LINENO" "struct kinfo_proc" "kp_eproc.e_tdev" "ac_cv_member_struct_kinfo_proc_kp_eproc_e_tdev" "
+	    #include <sys/param.h>
+	    #include <sys/sysctl.h>
+
+"
+if test "x$ac_cv_member_struct_kinfo_proc_kp_eproc_e_tdev" = xyes; then :
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_STRUCT_KINFO_PROC_KP_EPROC_E_TDEV 1
+_ACEOF
+
+
+else
+
+	    ac_fn_c_check_member "$LINENO" "struct kinfo_proc" "p_tdev" "ac_cv_member_struct_kinfo_proc_p_tdev" "
+		#include <sys/param.h>
+		#include <sys/sysctl.h>
+
+"
+if test "x$ac_cv_member_struct_kinfo_proc_p_tdev" = xyes; then :
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_STRUCT_KINFO_PROC_P_TDEV 1
+_ACEOF
+
 
 fi
 
+
+fi
+
+
+fi
+
+
 fi
 done
 

configure.in

@@ -2090,12 +2090,26 @@ if test "$utmp_style" = "LEGACY"; then
     AC_CHECK_FUNCS(getttyent ttyslot, [break])
 fi
 
-AC_CHECK_FUNCS(sysctl, [AC_CHECK_MEMBER([struct kinfo_proc.ki_tdev], 
+AC_CHECK_FUNCS(sysctl, [AC_CHECK_MEMBERS([struct kinfo_proc.ki_tdev], 
-    [AC_DEFINE(HAVE_STRUCT_KINFO_PROC_KI_TDEV, 1, [Define if your struct kinfo_proc has a ki_tdev field.])],    
     [],
-    [ #include <sys/param.h>
+    [
-      #include <sys/user.h>]
+	AC_CHECK_MEMBERS([struct kinfo_proc.kp_eproc.e_tdev], [], [
-)])
+	    AC_CHECK_MEMBERS([struct kinfo_proc.p_tdev], [], [], [
+		#include <sys/param.h>
+		#include <sys/sysctl.h>
+	    ])
+	],
+	[
+	    #include <sys/param.h>
+	    #include <sys/sysctl.h>
+	])
+    ],
+    [
+	#include <sys/param.h>
+	#include <sys/sysctl.h>
+	#include <sys/user.h>
+    ])
+])
 
 AC_CHECK_FUNCS(openpty, [AC_CHECK_HEADERS(libutil.h util.h pty.h, [break])], [
     AC_CHECK_LIB(util, openpty, [

src/sudo.c

@@ -89,7 +89,9 @@
 #ifdef HAVE_PRIV_SET
 # include <priv.h>
 #endif
-#ifdef HAVE_STRUCT_KINFO_PROC_KI_TDEV
+#if defined(HAVE_STRUCT_KINFO_PROC_P_TDEV) || defined (HAVE_STRUCT_KINFO_PROC_KP_EPROC_E_TDEV)
+# include <sys/sysctl.h>
+#elif defined(HAVE_STRUCT_KINFO_PROC_KI_TDEV)
 # include <sys/sysctl.h>
 # include <sys/user.h>
 #endif
@@ -424,7 +426,21 @@ get_user_groups(struct user_details *ud)
     debug_return_str(gid_list);
 }
 
-#ifdef HAVE_STRUCT_KINFO_PROC_KI_TDEV
+/*
+ * How to access the tty device number in struct kinfo_proc.
+ */
+#if defined(HAVE_STRUCT_KINFO_PROC_KP_EPROC_E_TDEV)
+# define sudo_kp_tdev		kp_eproc.e_tdev
+# define sudo_kp_namelen	4
+#elif defined(HAVE_STRUCT_KINFO_PROC_KI_TDEV)
+# define sudo_kp_tdev		ki_tdev
+# define sudo_kp_namelen	4
+#elif defined(HAVE_STRUCT_KINFO_PROC_P_TDEV)
+# define sudo_kp_tdev		p_tdev
+# define sudo_kp_namelen	6
+#endif
+
+#ifdef sudo_kp_tdev
 /*
  * Return a string from ttyname() containing the tty to which the process is
  * attached or NULL if there is no tty associated with the process (or its
@@ -437,7 +453,7 @@ get_process_tty(void)
     char *tty = NULL;
     struct kinfo_proc *ki_proc = NULL;
     size_t size = sizeof(*ki_proc);
-    int i, mib[4], rc;
+    int i, mib[6], rc;
     debug_decl(get_process_tty, SUDO_DEBUG_UTIL)
 
     /*
@@ -449,13 +465,15 @@ get_process_tty(void)
 	mib[1] = KERN_PROC;
 	mib[2] = KERN_PROC_PID;
 	mib[3] = i ? (int)getppid() : (int)getpid();
+	mib[4] = sizeof(*ki_proc);
+	mib[5] = 1;
 	do {
 	    size += size / 10;
 	    ki_proc = erealloc(ki_proc, size);
-	    rc = sysctl(mib, 4, ki_proc, &size, NULL, 0);
+	    rc = sysctl(mib, sudo_kp_namelen, ki_proc, &size, NULL, 0);
 	} while (rc == -1 && errno == ENOMEM);
 	if (rc != -1)
-	    tty = devname(ki_proc->ki_tdev, S_IFCHR);
+	    tty = devname(ki_proc->sudo_kp_tdev, S_IFCHR);
     }
 
     /* If all else fails, fall back on ttyname(). */