Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / hci / shell.c

diff --git a/qemu/roms/ipxe/src/hci/shell.c b/qemu/roms/ipxe/src/hci/shell.c
new file mode 100644 (file)
index 0000000..c1a5438
--- /dev/null
+++ b/qemu/roms/ipxe/src/hci/shell.c
@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 2006 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.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <getopt.h>
+#include <readline/readline.h>
+#include <ipxe/command.h>
+#include <ipxe/parseopt.h>
+#include <ipxe/shell.h>
+
+/** @file
+ *
+ * Minimal command shell
+ *
+ */
+
+/** The shell prompt string */
+static const char shell_prompt[] = "iPXE> ";
+
+/**
+ * "help" command
+ *
+ * @v argc             Argument count
+ * @v argv             Argument list
+ * @ret rc             Return status code
+ */
+static int help_exec ( int argc __unused, char **argv __unused ) {
+       struct command *command;
+       unsigned int hpos = 0;
+
+       printf ( "\nAvailable commands:\n\n" );
+       for_each_table_entry ( command, COMMANDS ) {
+               hpos += printf ( "  %s", command->name );
+               if ( hpos > ( 16 * 4 ) ) {
+                       printf ( "\n" );
+                       hpos = 0;
+               } else {
+                       while ( hpos % 16 ) {
+                               printf ( " " );
+                               hpos++;
+                       }
+               }
+       }
+       printf ( "\n\nType \"<command> --help\" for further information\n\n" );
+       return 0;
+}
+
+/** "help" command */
+struct command help_command __command = {
+       .name = "help",
+       .exec = help_exec,
+};
+
+/**
+ * Start command shell
+ *
+ */
+int shell ( void ) {
+       struct readline_history history;
+       char *line;
+       int rc = 0;
+
+       /* Initialise shell history */
+       memset ( &history, 0, sizeof ( history ) );
+
+       /* Read and execute commands */
+       do {
+               readline_history ( shell_prompt, NULL, &history, &line );
+               if ( line ) {
+                       rc = system ( line );
+                       free ( line );
+               }
+       } while ( ! shell_stopped ( SHELL_STOP_COMMAND_SEQUENCE ) );
+
+       /* Discard shell history */
+       history_free ( &history );
+
+       return rc;
+}
+
+/** "shell" options */
+struct shell_options {};
+
+/** "shell" option list */
+static struct option_descriptor shell_opts[] = {};
+
+/** "shell" command descriptor */
+static struct command_descriptor shell_cmd =
+       COMMAND_DESC ( struct shell_options, shell_opts, 0, 0, NULL );
+
+/**
+ * "shell" command
+ *
+ * @v argc             Argument count
+ * @v argv             Argument list
+ * @ret rc             Return status code
+ */
+static int shell_exec ( int argc, char **argv ) {
+       struct shell_options opts;
+       int rc;
+
+       /* Parse options */
+       if ( ( rc = parse_options ( argc, argv, &shell_cmd, &opts ) ) != 0 )
+               return rc;
+
+       /* Start shell */
+       if ( ( rc = shell() ) != 0 )
+               return rc;
+
+       return 0;
+}
+
+/** "shell" command */
+struct command shell_command __command = {
+       .name = "shell",
+       .exec = shell_exec,
+};