Remove -f option from pg_verify_checksums

This option makes no sense when the cluster checksum state cannot be
changed, and should have been removed in the revert.

Author: Daniel Gustafsson
Review: Michael Paquier

doc/src/sgml/ref/pg_verify_checksums.sgml

@@ -52,15 +52,6 @@ PostgreSQL documentation
       </listitem>
      </varlistentry>
 
-     <varlistentry>
-      <term><option>-f</option></term>
-      <listitem>
-       <para>
-        Force check even if checksums are disabled on cluster.
-       </para>
-      </listitem>
-     </varlistentry>
-
      <varlistentry>
       <term><option>-d</option></term>
       <listitem>

src/bin/pg_verify_checksums/pg_verify_checksums.c

@@ -42,7 +42,6 @@ usage()
 	printf(_("  %s [OPTION] [DATADIR]\n"), progname);
 	printf(_("\nOptions:\n"));
 	printf(_(" [-D] DATADIR    data directory\n"));
-	printf(_("  -f,            force check even if checksums are disabled\n"));
 	printf(_("  -r relfilenode check only relation with specified relfilenode\n"));
 	printf(_("  -d             debug output, listing all checked blocks\n"));
 	printf(_("  -V, --version  output version information, then exit\n"));
@@ -202,7 +201,6 @@ int
 main(int argc, char *argv[])
 {
 	char	   *DataDir = NULL;
-	bool		force = false;
 	int			c;
 	bool		crc_ok;
 
@@ -224,7 +222,7 @@ main(int argc, char *argv[])
 		}
 	}
 
-	while ((c = getopt(argc, argv, "D:fr:d")) != -1)
+	while ((c = getopt(argc, argv, "D:r:d")) != -1)
 	{
 		switch (c)
 		{
@@ -234,9 +232,6 @@ main(int argc, char *argv[])
 			case 'D':
 				DataDir = optarg;
 				break;
-			case 'f':
-				force = true;
-				break;
 			case 'r':
 				if (atoi(optarg) <= 0)
 				{
@@ -292,7 +287,7 @@ main(int argc, char *argv[])
 		exit(1);
 	}
 
-	if (ControlFile->data_checksum_version == 0 && !force)
+	if (ControlFile->data_checksum_version == 0)
 	{
 		fprintf(stderr, _("%s: data checksums are not enabled in cluster.\n"), progname);
 		exit(1);