chroot, env, nice, su: use EXIT_CANCELED for internal failure

* src/chroot.c (main): Use EXIT_CANCELED, not EXIT_FAILURE.
* src/env.c (main): Likewise.
* src/nice.c (main): Likewise.
* src/su.c (change_identity, main): Likewise.
* doc/coreutils.texi (chroot invocation, env invocation)
(nice invocation, su invocation): Document this.
* NEWS: Likewise.
* tests/misc/invalid-opt (exit_status): Adjust expected results.
* tests/misc/help-version (expected_failure_status): Likewise.

1 files changed, 7 insertions, 7 deletions

diff --git a/src/su.c b/src/su.c
index 25b883814..0de67c95a 100644
--- a/src/su.c
+++ b/src/su.c
@@ -286,13 +286,13 @@ change_identity (const struct passwd *pw)
 #ifdef HAVE_INITGROUPS
   errno = 0;
   if (initgroups (pw->pw_name, pw->pw_gid) == -1)
-    error (EXIT_FAILURE, errno, _("cannot set groups"));
+    error (EXIT_CANCELED, errno, _("cannot set groups"));
   endgrent ();
 #endif
   if (setgid (pw->pw_gid))
-    error (EXIT_FAILURE, errno, _("cannot set group id"));
+    error (EXIT_CANCELED, errno, _("cannot set group id"));
   if (setuid (pw->pw_uid))
-    error (EXIT_FAILURE, errno, _("cannot set user id"));
+    error (EXIT_CANCELED, errno, _("cannot set user id"));
 }
 
 /* Run SHELL, or DEFAULT_SHELL if SHELL is empty.
@@ -406,7 +406,7 @@ main (int argc, char **argv)
   bindtextdomain (PACKAGE, LOCALEDIR);
   textdomain (PACKAGE);
 
-  initialize_exit_failure (EXIT_FAILURE);
+  initialize_exit_failure (EXIT_CANCELED);
   atexit (close_stdout);
 
   fast_startup = false;
@@ -443,7 +443,7 @@ main (int argc, char **argv)
         case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
         default:
-          usage (EXIT_FAILURE);
+          usage (EXIT_CANCELED);
         }
     }
 
@@ -458,7 +458,7 @@ main (int argc, char **argv)
   pw = getpwnam (new_user);
   if (! (pw && pw->pw_name && pw->pw_name[0] && pw->pw_dir && pw->pw_dir[0]
          && pw->pw_passwd))
-    error (EXIT_FAILURE, 0, _("user %s does not exist"), new_user);
+    error (EXIT_CANCELED, 0, _("user %s does not exist"), new_user);
 
   /* Make a copy of the password information and point pw at the local
      copy instead.  Otherwise, some systems (e.g. GNU/Linux) would clobber
@@ -481,7 +481,7 @@ main (int argc, char **argv)
 #ifdef SYSLOG_FAILURE
       log_su (pw, false);
 #endif
-      error (EXIT_FAILURE, 0, _("incorrect password"));
+      error (EXIT_CANCELED, 0, _("incorrect password"));
     }
 #ifdef SYSLOG_SUCCESS
   else