diff options
author | Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
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committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/ipxe/src/hci/shell.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/ipxe/src/hci/shell.c')
-rw-r--r-- | qemu/roms/ipxe/src/hci/shell.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/hci/shell.c b/qemu/roms/ipxe/src/hci/shell.c new file mode 100644 index 000000000..c1a543849 --- /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, +}; |