--- /dev/null
+/*
+ * Copyright (C) 2010 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <getopt.h>
+#include <byteswap.h>
+#include <ipxe/settings.h>
+#include <ipxe/command.h>
+#include <ipxe/parseopt.h>
+#include <readline/readline.h>
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/** @file
+ *
+ * Non-volatile option commands
+ *
+ */
+
+/** "show" options */
+struct show_options {};
+
+/** "show" option list */
+static struct option_descriptor show_opts[] = {};
+
+/** "show" command descriptor */
+static struct command_descriptor show_cmd =
+ COMMAND_DESC ( struct show_options, show_opts, 1, 1, "<setting>" );
+
+/**
+ * "show" command
+ *
+ * @v argc Argument count
+ * @v argv Argument list
+ * @ret rc Return status code
+ */
+static int show_exec ( int argc, char **argv ) {
+ struct show_options opts;
+ struct named_setting setting;
+ struct settings *origin;
+ struct setting fetched;
+ char name_buf[32];
+ char *value;
+ int len;
+ int rc;
+
+ /* Parse options */
+ if ( ( rc = parse_options ( argc, argv, &show_cmd, &opts ) ) != 0 )
+ goto err_parse_options;
+
+ /* Parse setting name */
+ if ( ( rc = parse_existing_setting ( argv[optind], &setting ) ) != 0 )
+ goto err_parse_setting;
+
+ /* Fetch formatted setting value */
+ if ( ( len = fetchf_setting_copy ( setting.settings, &setting.setting,
+ &origin, &fetched, &value ) ) < 0 ) {
+ rc = len;
+ printf ( "Could not find \"%s\": %s\n",
+ setting.setting.name, strerror ( rc ) );
+ goto err_fetchf;
+ }
+
+ /* Print setting value */
+ setting_name ( origin, &fetched, name_buf, sizeof ( name_buf ) );
+ printf ( "%s = %s\n", name_buf, value );
+
+ /* Success */
+ rc = 0;
+
+ free ( value );
+ err_fetchf:
+ err_parse_setting:
+ err_parse_options:
+ return rc;
+}
+
+/** "set", "clear", and "read" options */
+struct set_core_options {};
+
+/** "set", "clear", and "read" option list */
+static struct option_descriptor set_core_opts[] = {};
+
+/** "set" command descriptor */
+static struct command_descriptor set_cmd =
+ COMMAND_DESC ( struct set_core_options, set_core_opts, 1, MAX_ARGUMENTS,
+ "<setting> <value>" );
+
+/** "clear" and "read" command descriptor */
+static struct command_descriptor clear_read_cmd =
+ COMMAND_DESC ( struct set_core_options, set_core_opts, 1, 1,
+ "<setting>" );
+
+/**
+ * "set", "clear", and "read" command
+ *
+ * @v argc Argument count
+ * @v argv Argument list
+ * @v cmd Command descriptor
+ * @v get_value Method to obtain setting value
+ * @ret rc Return status code
+ */
+static int set_core_exec ( int argc, char **argv,
+ struct command_descriptor *cmd,
+ int ( * get_value ) ( struct named_setting *setting,
+ char **args, char **value ) ) {
+ struct set_core_options opts;
+ struct named_setting setting;
+ char *value;
+ int rc;
+
+ /* Parse options */
+ if ( ( rc = parse_options ( argc, argv, cmd, &opts ) ) != 0 )
+ goto err_parse_options;
+
+ /* Parse setting name */
+ if ( ( rc = parse_autovivified_setting ( argv[optind],
+ &setting ) ) != 0 )
+ goto err_parse_setting;
+
+ /* Parse setting value */
+ if ( ( rc = get_value ( &setting, &argv[ optind + 1 ], &value ) ) != 0 )
+ goto err_get_value;
+
+ /* Apply default type if necessary */
+ if ( ! setting.setting.type )
+ setting.setting.type = &setting_type_string;
+
+ /* Store setting */
+ if ( ( rc = storef_setting ( setting.settings, &setting.setting,
+ value ) ) != 0 ) {
+ printf ( "Could not store \"%s\": %s\n",
+ setting.setting.name, strerror ( rc ) );
+ goto err_store;
+ }
+
+ err_store:
+ free ( value );
+ err_get_value:
+ err_parse_setting:
+ err_parse_options:
+ return rc;
+}
+
+/**
+ * Get setting value for "set" command
+ *
+ * @v setting Named setting
+ * @v args Remaining arguments
+ * @ret value Setting value
+ * @ret rc Return status code
+ */
+static int set_value ( struct named_setting *setting __unused,
+ char **args, char **value ) {
+
+ *value = concat_args ( args );
+ if ( ! *value )
+ return -ENOMEM;
+
+ return 0;
+}
+
+/**
+ * "set" command
+ *
+ * @v argc Argument count
+ * @v argv Argument list
+ * @ret rc Return status code
+ */
+static int set_exec ( int argc, char **argv ) {
+ return set_core_exec ( argc, argv, &set_cmd, set_value );
+}
+
+/**
+ * Get setting value for "clear" command
+ *
+ * @v setting Named setting
+ * @v args Remaining arguments
+ * @ret value Setting value
+ * @ret rc Return status code
+ */
+static int clear_value ( struct named_setting *setting __unused,
+ char **args __unused, char **value ) {
+
+ *value = NULL;
+ return 0;
+}
+
+/**
+ * "clear" command
+ *
+ * @v argc Argument count
+ * @v argv Argument list
+ * @ret rc Return status code
+ */
+static int clear_exec ( int argc, char **argv ) {
+ return set_core_exec ( argc, argv, &clear_read_cmd, clear_value );
+}
+
+/**
+ * Get setting value for "read" command
+ *
+ * @v setting Named setting
+ * @v args Remaining arguments
+ * @ret value Setting value
+ * @ret rc Return status code
+ */
+static int read_value ( struct named_setting *setting, char **args __unused,
+ char **value ) {
+ char *existing;
+ int rc;
+
+ /* Read existing value, treating errors as equivalent to an
+ * empty initial setting.
+ */
+ fetchf_setting_copy ( setting->settings, &setting->setting,
+ NULL, &setting->setting, &existing );
+
+ /* Read new value */
+ if ( ( rc = readline_history ( NULL, existing, NULL, value ) ) != 0 )
+ goto err_readline;
+
+ err_readline:
+ free ( existing );
+ return rc;
+}
+
+/**
+ * "read" command
+ *
+ * @v argc Argument count
+ * @v argv Argument list
+ * @ret rc Return status code
+ */
+static int read_exec ( int argc, char **argv ) {
+ return set_core_exec ( argc, argv, &clear_read_cmd, read_value );
+}
+
+/** "inc" options */
+struct inc_options {};
+
+/** "inc" option list */
+static struct option_descriptor inc_opts[] = {};
+
+/** "inc" command descriptor */
+static struct command_descriptor inc_cmd =
+ COMMAND_DESC ( struct inc_options, inc_opts, 1, 2,
+ "<setting> [<increment>]" );
+
+/**
+ * "inc" command
+ *
+ * @v argc Argument count
+ * @v argv Argument list
+ * @ret rc Return status code
+ */
+static int inc_exec ( int argc, char **argv ) {
+ struct inc_options opts;
+ struct named_setting setting;
+ unsigned int increment = 1;
+ unsigned long value;
+ int rc;
+
+ /* Parse options */
+ if ( ( rc = parse_options ( argc, argv, &inc_cmd, &opts ) ) != 0 )
+ goto err_parse_options;
+
+ /* Parse setting name */
+ if ( ( rc = parse_existing_setting ( argv[optind], &setting ) ) != 0 )
+ goto err_parse_setting;
+
+ /* Parse increment (if present) */
+ if ( ( ( optind + 1 ) < argc ) &&
+ ( ( rc = parse_integer ( argv[ optind + 1 ], &increment ) ) != 0))
+ goto err_parse_increment;
+
+ /* Read existing value, treating errors as equivalent to a
+ * zero-valued :int32 initial setting.
+ */
+ if ( ( rc = fetchn_setting ( setting.settings, &setting.setting,
+ NULL, &setting.setting, &value ) ) != 0 ) {
+ value = 0;
+ if ( ! setting.setting.type )
+ setting.setting.type = &setting_type_int32;
+ }
+
+ /* Increment value */
+ value += increment;
+
+ /* Store updated setting value */
+ if ( ( rc = storen_setting ( setting.settings, &setting.setting,
+ value ) ) != 0 ) {
+ printf ( "Could not store \"%s\": %s\n",
+ setting.setting.name, strerror ( rc ) );
+ goto err_store;
+ }
+
+ err_store:
+ err_parse_increment:
+ err_parse_setting:
+ err_parse_options:
+ return rc;
+}
+
+/** Non-volatile option commands */
+struct command nvo_commands[] __command = {
+ {
+ .name = "show",
+ .exec = show_exec,
+ },
+ {
+ .name = "set",
+ .exec = set_exec,
+ },
+ {
+ .name = "clear",
+ .exec = clear_exec,
+ },
+ {
+ .name = "read",
+ .exec = read_exec,
+ },
+ {
+ .name = "inc",
+ .exec = inc_exec,
+ },
+};
Code Review / kvmfornfv.git / blobdiff