| /* rescue_parser.c - rescue mode parser */ |
| /* |
| * GRUB -- GRand Unified Bootloader |
| * Copyright (C) 2009 Free Software Foundation, Inc. |
| * |
| * GRUB 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 3 of the License, or |
| * (at your option) any later version. |
| * |
| * GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include <grub/types.h> |
| #include <grub/mm.h> |
| #include <grub/env.h> |
| #include <grub/parser.h> |
| #include <grub/misc.h> |
| #include <grub/command.h> |
| |
| static grub_err_t |
| grub_rescue_parse_line (char *line, grub_reader_getline_t getline) |
| { |
| char *name; |
| int n; |
| grub_command_t cmd; |
| char **args; |
| |
| if (grub_parser_split_cmdline (line, getline, &n, &args) || n < 0) |
| return grub_errno; |
| |
| /* In case of an assignment set the environment accordingly |
| instead of calling a function. */ |
| if (n == 0 && grub_strchr (line, '=')) |
| { |
| char *val = grub_strchr (args[0], '='); |
| val[0] = 0; |
| grub_env_set (args[0], val + 1); |
| val[0] = '='; |
| goto quit; |
| } |
| |
| /* Get the command name. */ |
| name = args[0]; |
| |
| /* If nothing is specified, restart. */ |
| if (*name == '\0') |
| goto quit; |
| |
| cmd = grub_command_find (name); |
| if (cmd) |
| { |
| (cmd->func) (cmd, n, &args[1]); |
| } |
| else |
| { |
| grub_printf ("Unknown command `%s'\n", name); |
| if (grub_command_find ("help")) |
| grub_printf ("Try `help' for usage\n"); |
| } |
| |
| quit: |
| grub_free (args[0]); |
| grub_free (args); |
| |
| return grub_errno; |
| } |
| |
| static struct grub_parser grub_rescue_parser = |
| { |
| .name = "rescue", |
| .parse_line = grub_rescue_parse_line |
| }; |
| |
| void |
| grub_register_rescue_parser (void) |
| { |
| grub_parser_register ("rescue", &grub_rescue_parser); |
| } |