PG-1400: Correct pg_tde_change_key_provider naming

Previusly the tool was named pg_tde_alter_key_provider, but in the
help message it referred to itself as pg_tde_modify_key_provider.

Instead of any of that, the name should align with the online
function, which i pg_tde_change_key_provider.

This commit renames the tool and addresses the help message.

Also, the help message is now more detailed to make the parameters
cleaner.

src/bin/Makefile

@@ -31,7 +31,7 @@ SUBDIRS = \
 	pg_dump \
 	pg_resetwal \
 	pg_rewind \
-	pg_tde_alter_key_provider \
+	pg_tde_change_key_provider \
 	pg_test_fsync \
 	pg_test_timing \
 	pg_upgrade \

src/bin/meson.build

@@ -12,7 +12,7 @@ subdir('pg_ctl')
 subdir('pg_dump')
 subdir('pg_resetwal')
 subdir('pg_rewind')
-subdir('pg_tde_alter_key_provider')
+subdir('pg_tde_change_key_provider')
 subdir('pg_test_fsync')
 subdir('pg_test_timing')
 subdir('pg_upgrade')

src/bin/pg_tde_alter_key_provider/.gitignore

@@ -1 +0,0 @@
-/pg_tde_alter_key_provider

src/bin/pg_tde_change_key_provider/.gitignore

@@ -0,0 +1 @@
+/pg_tde_change_key_provider

src/bin/pg_tde_change_key_provider/Makefile

@@ -1,13 +1,13 @@
-# src/bin/pg_tde_alter_key_provider/Makefile
+# src/bin/pg_tde_change_key_provider/Makefile
 
-PGFILEDESC = "pg_tde_alter_key_provider"
+PGFILEDESC = "pg_tde_change_key_provider"
 
-subdir = src/bin/pg_tde_alter_key_provider
+subdir = src/bin/pg_tde_change_key_provider
 top_builddir = ../../..
 include $(top_builddir)/src/Makefile.global
 
 OBJS = \
-	pg_tde_alter_key_provider.o 
+	pg_tde_change_key_provider.o 
 
 override CPPFLAGS := -DFRONTEND $(CPPFLAGS)
 
@@ -17,20 +17,20 @@ OBJS += \
 
 override CPPFLAGS := -I$(top_srcdir)/contrib/pg_tde/src/include -I$(top_srcdir)/contrib/pg_tde/src/libkmip/libkmip/include $(CPPFLAGS)
 
-all: pg_tde_alter_key_provider
+all: pg_tde_change_key_provider
 
-pg_tde_alter_key_provider: $(OBJS) | submake-libpgport
+pg_tde_change_key_provider: $(OBJS) | submake-libpgport
 	$(CC) $(CFLAGS) $^ $(LDFLAGS) $(LDFLAGS_EX) $(LIBS) -o $@$(X)
 
 install: all installdirs
-	$(INSTALL_PROGRAM) pg_tde_alter_key_provider$(X) '$(DESTDIR)$(bindir)/pg_tde_alter_key_provider$(X)'
+	$(INSTALL_PROGRAM) pg_tde_change_key_provider$(X) '$(DESTDIR)$(bindir)/pg_tde_change_key_provider$(X)'
 
 installdirs:
 	$(MKDIR_P) '$(DESTDIR)$(bindir)'
 
 uninstall:
-	rm -f '$(DESTDIR)$(bindir)/pg_tde_alter_key_provider$(X)'
+	rm -f '$(DESTDIR)$(bindir)/pg_tde_change_key_provider$(X)'
 
 clean distclean:
-	rm -f pg_tde_alter_key_provider$(X) $(OBJS) $(RMGRDESCSOURCES) xlogreader.c xlogstats.c
+	rm -f pg_tde_change_key_provider$(X) $(OBJS) $(RMGRDESCSOURCES) xlogreader.c xlogstats.c
 	rm -rf tmp_check

src/bin/pg_tde_change_key_provider/meson.build

@@ -1,22 +1,22 @@
-pg_tde_alter_key_provider_sources = files(
-  'pg_tde_alter_key_provider.c',
+pg_tde_change_key_provider_sources = files(
+  'pg_tde_change_key_provider.c',
 )
 
 link_w = [pg_tde_frontend]
 include_dirs = [postgres_inc, pg_tde_inc]
 
-pg_tde_alter_key_provider = executable('pg_tde_alter_key_provider',
-  pg_tde_alter_key_provider_sources,
+pg_tde_change_key_provider = executable('pg_tde_change_key_provider',
+  pg_tde_change_key_provider_sources,
   dependencies: [frontend_code, lz4, zstd],
   c_args: ['-DFRONTEND'], # needed for xlogreader et al
   kwargs: default_bin_args,
   include_directories: include_dirs,
   link_with: link_w
 )
-bin_targets += pg_tde_alter_key_provider
+bin_targets += pg_tde_change_key_provider
 
 tests += {
-  'name': 'pg_tde_alter_key_provider',
+  'name': 'pg_tde_change_key_provider',
   'sd': meson.current_source_dir(),
   'bd': meson.current_build_dir(),
   'tap': {

src/bin/pg_tde_change_key_provider/pg_tde_change_key_provider.c

@@ -10,20 +10,29 @@
 #include <stdarg.h>
 #include <stdio.h>
 
-/* version string we expect back from pg_tde_modify_key_provider */
-#define PROGNAME "pg_tde_modify_key_provider (PostgreSQL) " PG_VERSION "\n"
+/* version string we expect back from pg_tde_change_key_provider */
+#define PROGNAME "pg_tde_change_key_provider (PostgreSQL) " PG_VERSION "\n"
 
 static void
 help(void)
 {
-	printf("pg_tde_modify_key_provider changes the configuration of a pg_tde key provider\n");
+	puts("pg_tde_change_key_provider changes the configuration of a pg_tde key provider");
 	puts("");
-	printf("Usage:\n");
-	printf("pg_tde_modify_key_provider [-D <datadir>] <dbOid> <provider_name> file <filename>\n");
-	printf("pg_tde_modify_key_provider [-D <datadir>] <dbOid> <provider_name> vault <token> <url> <mount_path> [<ca_path>]\n");
-	printf("pg_tde_modify_key_provider [-D <datadir>] <dbOid> <provider_name> kmip <host> <port> <cert_path> [<ca_path>]\n");
-	printf("\nWARNING:\n");
-	printf("This tool only changes the values, without properly XLogging the changes. Only use it in case the database is inaccessible and can't be started.\n");
+	puts("Usage:");
+	puts("");
+	puts("pg_tde_change_key_provider [-D <datadir>] <dbOid> <provider_name> <new_provider_type> <provider_parameters...>");
+	puts("");
+	puts("  Where <new_provider_type> can be file, vault or kmip");
+	puts("");
+	puts("Depending on the provider type, the complete parameter list is:");
+	puts("");
+	puts("pg_tde_change_key_provider [-D <datadir>] <dbOid> <provider_name> file <filename>");
+	puts("pg_tde_change_key_provider [-D <datadir>] <dbOid> <provider_name> vault <token> <url> <mount_path> [<ca_path>]");
+	puts("pg_tde_change_key_provider [-D <datadir>] <dbOid> <provider_name> kmip <host> <port> <cert_path> [<ca_path>]");
+	puts("");
+	puts("WARNING:");
+	puts("");
+	puts("This tool only changes the values, without properly XLogging the changes, or adjusting the configuration in the running postgres processes. Only use it in case the database is inaccessible and can't be started.\n");
 }
 
 #define BUFFER_SIZE 1024
@@ -110,7 +119,7 @@ main(int argc, char *argv[])
 
 	pg_logging_init(argv[0]);
 	pg_logging_set_level(PG_LOG_WARNING);
-	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_tde_alter_key_provider"));
+	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_tde_change_key_provider"));
 
 	if (argc > 1)
 	{
@@ -121,7 +130,7 @@ main(int argc, char *argv[])
 		}
 		if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
 		{
-			puts("pg_tde_alter_key_provider (PostgreSQL) " PG_VERSION);
+			puts("pg_tde_change_key_provider (PostgreSQL) " PG_VERSION);
 			exit(0);
 		}
 	}