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bd60f5a207
If line contains single word, line and argv[0] are aliases, so no NULL dereference is possible, but Coverity does not know it. Change code to avoid ambiguity and also remove redundant call to grub_strchr. CID: 86725
85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
/* rescue_parser.c - rescue mode parser */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2009 Free Software Foundation, Inc.
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*
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* GRUB 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 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/types.h>
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#include <grub/mm.h>
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#include <grub/env.h>
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#include <grub/parser.h>
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#include <grub/misc.h>
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#include <grub/command.h>
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#include <grub/i18n.h>
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grub_err_t
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grub_rescue_parse_line (char *line,
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grub_reader_getline_t getline, void *getline_data)
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{
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char *name;
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int n;
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grub_command_t cmd;
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char **args;
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if (grub_parser_split_cmdline (line, getline, getline_data, &n, &args)
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|| n < 0)
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return grub_errno;
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if (n == 0)
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return GRUB_ERR_NONE;
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/* In case of an assignment set the environment accordingly
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instead of calling a function. */
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if (n == 1)
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{
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char *val = grub_strchr (args[0], '=');
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if (val)
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{
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val[0] = 0;
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grub_env_set (args[0], val + 1);
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val[0] = '=';
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goto quit;
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}
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}
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/* Get the command name. */
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name = args[0];
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/* If nothing is specified, restart. */
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if (*name == '\0')
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goto quit;
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cmd = grub_command_find (name);
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if (cmd)
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{
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(cmd->func) (cmd, n - 1, &args[1]);
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}
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else
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{
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grub_printf_ (N_("Unknown command `%s'.\n"), name);
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if (grub_command_find ("help"))
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grub_printf ("Try `help' for usage\n");
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}
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quit:
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/* Arguments are returned in single memory chunk separated by zeroes */
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grub_free (args[0]);
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grub_free (args);
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return grub_errno;
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}
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