2005-11-06 Marco Gerards <mgerards@xs4all.nl>
Add initial scripting support. * commands/test.c: New file. * include/grub/script.h: Likewise. * normal/execute.c: Likewise. * normal/function.c: Likewise. * normal/lexer.c: Likewise. * normal/parser.y: Likewise. * normal/script.c: Likewise. * configure.ac: Add `AC_PROG_YACC' test. * conf/i386-pc.rmk (grub_emu_SOURCES): Add `commands/test.c', `normal/execute.c', `normal/lexer.c', `grub_script.tab.c', `normal/function.c' and `normal/script.c'. (normal_mod_SOURCES): `normal/execute.c', `normal/lexer.c', `grub_script.tab.c', `normal/function.c' and `normal/script.c'. (test_mod_SOURCES, test_mod_CFLAGS, test_mod_LDFLAGS): New variables. (pkgdata_MODULES): Add `test.mod'. (grub_script.tab.c): New rule. (grub_script.tab.h): Likewise. * include/grub/err.h (grub_err_t): Add `GRUB_ERR_TEST_FAILURE'. * include/grub/normal.h (grub_test_init): New prototype. (grub_test_fini): Likewise. * normal/command.c: Include <grub/script.h>. (grub_command_execute): Rewritten. * util/grub-emu.c (main): Call `grub_test_init' and `grub_test_fini'.
This commit is contained in:
marco_g
parent
77500b2bf0
commit
daac212ae3
16 changed files with 1702 additions and 76 deletions
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@ -26,6 +26,7 @@
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typedef enum
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{
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GRUB_ERR_NONE = 0,
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GRUB_ERR_TEST_FAILURE,
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GRUB_ERR_BAD_MODULE,
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GRUB_ERR_OUT_OF_MEMORY,
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GRUB_ERR_BAD_FILE_TYPE,
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@ -224,6 +224,8 @@ void grub_configfile_init (void);
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void grub_configfile_fini (void);
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void grub_search_init (void);
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void grub_search_fini (void);
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void grub_test_init (void);
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void grub_test_fini (void);
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#endif
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#endif /* ! GRUB_NORMAL_HEADER */
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189
include/grub/script.h
Normal file
189
include/grub/script.h
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@ -0,0 +1,189 @@
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/* script.h */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2005 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <grub/types.h>
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#include <grub/err.h>
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struct grub_script_mem;
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/* The generic header for each scripting command or structure. */
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struct grub_script_cmd
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{
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/* This function is called to execute the command. */
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grub_err_t (*exec) (struct grub_script_cmd *cmd);
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/* The next command. This can be used by the parent to form a chain
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of commands. */
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struct grub_script_cmd *next;
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};
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struct grub_script
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{
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struct grub_script_mem *mem;
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struct grub_script_cmd *cmd;
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};
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typedef enum
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{
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GRUB_SCRIPT_ARG_TYPE_STR,
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GRUB_SCRIPT_ARG_TYPE_VAR
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} grub_script_arg_type_t;
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/* A part of an argument. */
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struct grub_script_arg
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{
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grub_script_arg_type_t type;
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char *str;
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/* Next argument part. */
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struct grub_script_arg *next;
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};
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/* A complete argument. It consists of a list of one or more `struct
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grub_script_arg's. */
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struct grub_script_arglist
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{
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struct grub_script_arglist *next;
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struct grub_script_arg *arg;
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/* Only stored in the first link. */
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int argcount;
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};
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/* A single command line. */
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struct grub_script_cmdline
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{
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struct grub_script_cmd cmd;
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/* The arguments for this command. */
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struct grub_script_arglist *arglist;
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/* The command name of this command. XXX: Perhaps an argument
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should be used for this so we can use variables as command
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name. */
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char *cmdname;
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};
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/* A block of commands, this can be used to group commands. */
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struct grub_script_cmdblock
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{
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struct grub_script_cmd cmd;
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/* A chain of commands. */
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struct grub_script_cmd *cmdlist;
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};
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/* An if statement. */
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struct grub_script_cmdif
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{
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struct grub_script_cmd cmd;
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/* The command used to check if the if is true or false. */
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struct grub_script_cmd *bool;
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/* The code executed in case the result if bool was true. */
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struct grub_script_cmd *true;
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/* The code executed in case the result if bool was false. */
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struct grub_script_cmd *false;
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};
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struct grub_script_arglist *
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grub_script_create_arglist (void);
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struct grub_script_arglist *
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grub_script_add_arglist (struct grub_script_arglist *list,
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struct grub_script_arg *arg);
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struct grub_script_cmd *
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grub_script_create_cmdline (char *cmdname,
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struct grub_script_arglist *arglist);
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struct grub_script_cmd *
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grub_script_create_cmdblock (void);
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struct grub_script_cmd *
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grub_script_create_cmdif (struct grub_script_cmd *bool,
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struct grub_script_cmd *true,
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struct grub_script_cmd *false);
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struct grub_script_cmd *
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grub_script_add_cmd (struct grub_script_cmdblock *cmdblock,
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struct grub_script_cmd *cmd);
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struct grub_script_arg *
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grub_script_arg_add (struct grub_script_arg *arg,
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grub_script_arg_type_t type, char *str);
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struct grub_script *grub_script_parse (char *script,
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grub_err_t (*getline) (char **));
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void grub_script_free (struct grub_script *script);
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struct grub_script *grub_script_create (struct grub_script_cmd *cmd,
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struct grub_script_mem *mem);
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void grub_script_lexer_init (char *s, grub_err_t (*getline) (char **));
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void grub_script_lexer_ref (void);
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void grub_script_lexer_deref (void);
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/* Functions to track allocated memory. */
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void *grub_script_malloc (grub_size_t size);
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struct grub_script_mem *grub_script_mem_record (void);
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struct grub_script_mem *grub_script_mem_record_stop (struct grub_script_mem *restore);
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/* Functions used by bison. */
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int grub_script_yylex (void);
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int grub_script_yyparse (void);
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void grub_script_yyerror (char const *err);
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/* Commands to execute, don't use these directly. */
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grub_err_t grub_script_execute_cmdline (struct grub_script_cmd *cmd);
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grub_err_t grub_script_execute_cmdblock (struct grub_script_cmd *cmd);
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grub_err_t grub_script_execute_cmdif (struct grub_script_cmd *cmd);
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/* Execute any GRUB pre-parsed command or script. */
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grub_err_t grub_script_execute (struct grub_script *script);
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/* This variable points to the parsed command. This is used to
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communicate with the bison code. */
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extern struct grub_script_cmd *grub_script_parsed;
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/* The function description. */
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struct grub_script_function
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{
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/* The name. */
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char *name;
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/* The script function. */
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struct grub_script *func;
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/* The flags. */
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unsigned flags;
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/* The next element. */
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struct grub_script_function *next;
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int references;
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};
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typedef struct grub_script_function *grub_script_function_t;
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grub_script_function_t grub_script_function_create (char *functionname,
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struct grub_script *cmd);
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void grub_script_function_remove (const char *name);
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grub_script_function_t grub_script_function_find (char *functionname);
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int grub_script_function_iterate (int (*iterate) (grub_script_function_t));
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int grub_script_function_call (grub_script_function_t func,
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int argc, char **args);
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