merge with mainline
This commit is contained in:
BVK Chaitanya
commit
16c7cb32c8
80 changed files with 5101 additions and 1687 deletions
133
grub-core/script/argv.c
Normal file
133
grub-core/script/argv.c
Normal file
|
|
@ -0,0 +1,133 @@
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|||
/* argv.c - methods for constructing argument vector */
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/*
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||||
* GRUB -- GRand Unified Bootloader
|
||||
* Copyright (C) 2010 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.
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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
|
||||
* 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/>.
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||||
*/
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#include <grub/mm.h>
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#include <grub/script_sh.h>
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/* Return nearest power of two that is >= v. */
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static unsigned
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round_up_exp (unsigned v)
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{
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v--;
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v |= v >> 1;
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v |= v >> 2;
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v |= v >> 4;
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v |= v >> 8;
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v |= v >> 16;
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if (sizeof (v) > 4)
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v |= v >> 32;
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v++;
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v += (v == 0);
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return v;
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}
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void
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||||
grub_script_argv_free (struct grub_script_argv *argv)
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{
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unsigned i;
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|
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if (argv->args)
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{
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for (i = 0; i < argv->argc; i++)
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grub_free (argv->args[i]);
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grub_free (argv->args);
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}
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argv->argc = 0;
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argv->args = 0;
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}
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/* Prepare for next argc. */
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int
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grub_script_argv_next (struct grub_script_argv *argv)
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{
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char **p = argv->args;
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if (argv->args && argv->args[argv->argc - 1] == 0)
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return 0;
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p = grub_realloc (p, round_up_exp ((argv->argc + 2) * sizeof (char *)));
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if (! p)
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return 1;
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argv->argc++;
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argv->args = p;
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if (argv->argc == 1)
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argv->args[0] = 0;
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argv->args[argv->argc] = 0;
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return 0;
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}
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/* Append `s' to the last argument. */
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int
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grub_script_argv_append (struct grub_script_argv *argv, const char *s)
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{
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int a, b;
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char *p = argv->args[argv->argc - 1];
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if (! s)
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return 0;
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a = p ? grub_strlen (p) : 0;
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b = grub_strlen (s);
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p = grub_realloc (p, round_up_exp ((a + b + 1) * sizeof (char)));
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if (! p)
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return 1;
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grub_strcpy (p + a, s);
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argv->args[argv->argc - 1] = p;
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return 0;
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}
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/* Split `s' and append words as multiple arguments. */
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int
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grub_script_argv_split_append (struct grub_script_argv *argv, char *s)
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{
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char ch;
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char *p;
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int errors = 0;
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if (! s)
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return 0;
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while (! errors && *s)
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{
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p = s;
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while (*s && ! grub_isspace (*s))
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s++;
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ch = *s;
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*s = '\0';
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errors += grub_script_argv_append (argv, p);
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*s = ch;
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while (*s && grub_isspace (*s))
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s++;
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||||
|
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if (*s)
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errors += grub_script_argv_next (argv);
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}
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return errors;
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}
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|
|
@ -30,6 +30,252 @@
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|||
is sizeof (int) * 3, and one extra for a possible -ve sign. */
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#define ERRNO_DIGITS_MAX (sizeof (int) * 3 + 1)
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static unsigned long is_continue;
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static unsigned long active_loops;
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||||
static unsigned long active_breaks;
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||||
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||||
/* Scope for grub script functions. */
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||||
struct grub_script_scope
|
||||
{
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struct grub_script_argv argv;
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};
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static struct grub_script_scope *scope = 0;
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||||
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||||
grub_err_t
|
||||
grub_script_break (grub_command_t cmd, int argc, char *argv[])
|
||||
{
|
||||
char *p = 0;
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||||
unsigned long count;
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||||
|
||||
if (argc == 0)
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||||
count = 1;
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||||
else if ((argc > 1) || (count = grub_strtoul (argv[0], &p, 10)) == 0 ||
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(*p != '\0'))
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||||
return grub_error (GRUB_ERR_BAD_ARGUMENT, "bad break");
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||||
|
||||
is_continue = grub_strcmp (cmd->name, "break") ? 1 : 0;
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||||
active_breaks = grub_min (active_loops, count);
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||||
return GRUB_ERR_NONE;
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||||
}
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||||
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||||
grub_err_t
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grub_script_shift (grub_command_t cmd __attribute__((unused)),
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int argc, char *argv[])
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{
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char *p = 0;
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unsigned long n = 0;
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if (! scope)
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return GRUB_ERR_NONE;
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if (argc == 0)
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n = 1;
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else if (argc > 1)
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return GRUB_ERR_BAD_ARGUMENT;
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||||
|
||||
else
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||||
{
|
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n = grub_strtoul (argv[0], &p, 10);
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if (*p != '\0')
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return GRUB_ERR_BAD_ARGUMENT;
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||||
}
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||||
|
||||
if (n > scope->argv.argc)
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||||
return GRUB_ERR_BAD_ARGUMENT;
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||||
scope->argv.argc -= n;
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||||
scope->argv.args += n;
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||||
return GRUB_ERR_NONE;
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||||
}
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||||
|
||||
static int
|
||||
grub_env_special (const char *name)
|
||||
{
|
||||
if (grub_isdigit (name[0]) ||
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||||
grub_strcmp (name, "#") == 0 ||
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||||
grub_strcmp (name, "*") == 0 ||
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||||
grub_strcmp (name, "@") == 0)
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||||
return 1;
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||||
return 0;
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||||
}
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||||
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||||
static char **
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||||
grub_script_env_get (const char *name, grub_script_arg_type_t type)
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{
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||||
struct grub_script_argv result = { 0, 0 };
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||||
|
||||
if (grub_script_argv_next (&result))
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||||
goto fail;
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||||
|
||||
if (! grub_env_special (name))
|
||||
{
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||||
char *v = grub_env_get (name);
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||||
if (v && v[0])
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||||
{
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||||
if (type == GRUB_SCRIPT_ARG_TYPE_VAR)
|
||||
{
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||||
if (grub_script_argv_split_append (&result, v))
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||||
goto fail;
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||||
}
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||||
else
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||||
if (grub_script_argv_append (&result, v))
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||||
goto fail;
|
||||
}
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||||
}
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||||
else if (! scope)
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||||
{
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if (grub_script_argv_append (&result, 0))
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goto fail;
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||||
}
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else if (grub_strcmp (name, "#") == 0)
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{
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char buffer[ERRNO_DIGITS_MAX + 1];
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grub_snprintf (buffer, sizeof (buffer), "%u", scope->argv.argc);
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if (grub_script_argv_append (&result, buffer))
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goto fail;
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}
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else if (grub_strcmp (name, "*") == 0)
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{
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unsigned i;
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for (i = 0; i < scope->argv.argc; i++)
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if (type == GRUB_SCRIPT_ARG_TYPE_VAR)
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{
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if (i != 0 && grub_script_argv_next (&result))
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goto fail;
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if (grub_script_argv_split_append (&result, scope->argv.args[i]))
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goto fail;
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||||
}
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||||
else
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{
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if (i != 0 && grub_script_argv_append (&result, " "))
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goto fail;
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||||
|
||||
if (grub_script_argv_append (&result, scope->argv.args[i]))
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||||
goto fail;
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||||
}
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}
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else if (grub_strcmp (name, "@") == 0)
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{
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unsigned i;
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for (i = 0; i < scope->argv.argc; i++)
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{
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if (i != 0 && grub_script_argv_next (&result))
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goto fail;
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if (type == GRUB_SCRIPT_ARG_TYPE_VAR)
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{
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if (grub_script_argv_split_append (&result, scope->argv.args[i]))
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goto fail;
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}
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else
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if (grub_script_argv_append (&result, scope->argv.args[i]))
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goto fail;
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}
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||||
}
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else
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{
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unsigned long num = grub_strtoul (name, 0, 10);
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if (num == 0)
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; /* XXX no file name, for now. */
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else if (num <= scope->argv.argc)
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{
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if (type == GRUB_SCRIPT_ARG_TYPE_VAR)
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{
|
||||
if (grub_script_argv_split_append (&result,
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||||
scope->argv.args[num - 1]))
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||||
goto fail;
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||||
}
|
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else
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||||
if (grub_script_argv_append (&result, scope->argv.args[num - 1]))
|
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goto fail;
|
||||
}
|
||||
}
|
||||
|
||||
return result.args;
|
||||
|
||||
fail:
|
||||
|
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grub_script_argv_free (&result);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static grub_err_t
|
||||
grub_script_env_set (const char *name, const char *val)
|
||||
{
|
||||
if (grub_env_special (name))
|
||||
return grub_error (GRUB_ERR_BAD_ARGUMENT, "bad variable name");
|
||||
|
||||
return grub_env_set (name, val);
|
||||
}
|
||||
|
||||
/* Expand arguments in ARGLIST into multiple arguments. */
|
||||
static int
|
||||
grub_script_arglist_to_argv (struct grub_script_arglist *arglist,
|
||||
struct grub_script_argv *argv)
|
||||
{
|
||||
int i;
|
||||
char **values = 0;
|
||||
struct grub_script_arg *arg = 0;
|
||||
struct grub_script_argv result = { 0, 0 };
|
||||
|
||||
for (; arglist && arglist->arg; arglist = arglist->next)
|
||||
{
|
||||
if (grub_script_argv_next (&result))
|
||||
goto fail;
|
||||
|
||||
arg = arglist->arg;
|
||||
while (arg)
|
||||
{
|
||||
switch (arg->type)
|
||||
{
|
||||
case GRUB_SCRIPT_ARG_TYPE_VAR:
|
||||
case GRUB_SCRIPT_ARG_TYPE_DQVAR:
|
||||
values = grub_script_env_get (arg->str, arg->type);
|
||||
for (i = 0; values && values[i]; i++)
|
||||
{
|
||||
if (i != 0 && grub_script_argv_next (&result))
|
||||
goto fail;
|
||||
|
||||
if (grub_script_argv_append (&result, values[i]))
|
||||
goto fail;
|
||||
}
|
||||
grub_free (values);
|
||||
break;
|
||||
|
||||
case GRUB_SCRIPT_ARG_TYPE_TEXT:
|
||||
if (grub_strlen (arg->str) &&
|
||||
grub_script_argv_append (&result, arg->str))
|
||||
goto fail;
|
||||
break;
|
||||
|
||||
case GRUB_SCRIPT_ARG_TYPE_DQSTR:
|
||||
case GRUB_SCRIPT_ARG_TYPE_SQSTR:
|
||||
if (grub_script_argv_append (&result, arg->str))
|
||||
goto fail;
|
||||
break;
|
||||
}
|
||||
arg = arg->next;
|
||||
}
|
||||
}
|
||||
|
||||
if (! result.args[result.argc - 1])
|
||||
result.argc--;
|
||||
|
||||
*argv = result;
|
||||
return 0;
|
||||
|
||||
fail:
|
||||
|
||||
grub_script_argv_free (&result);
|
||||
return 1;
|
||||
}
|
||||
|
||||
static grub_err_t
|
||||
grub_script_execute_cmd (struct grub_script_cmd *cmd)
|
||||
{
|
||||
|
|
@ -46,149 +292,27 @@ grub_script_execute_cmd (struct grub_script_cmd *cmd)
|
|||
return ret;
|
||||
}
|
||||
|
||||
#define ARG_ALLOCATION_UNIT (32 * sizeof (char))
|
||||
#define ARGV_ALLOCATION_UNIT (8 * sizeof (void*))
|
||||
|
||||
/* Expand arguments in ARGLIST into multiple arguments. */
|
||||
char **
|
||||
grub_script_execute_arglist_to_argv (struct grub_script_arglist *arglist, int *count)
|
||||
/* Execute a function call. */
|
||||
grub_err_t
|
||||
grub_script_function_call (grub_script_function_t func, int argc, char **args)
|
||||
{
|
||||
int i;
|
||||
int oom;
|
||||
int argc;
|
||||
int empty;
|
||||
char *ptr;
|
||||
char **argv;
|
||||
char *value;
|
||||
struct grub_script_arg *arg;
|
||||
grub_err_t ret = 0;
|
||||
unsigned long loops = active_loops;
|
||||
struct grub_script_scope *old_scope;
|
||||
struct grub_script_scope new_scope;
|
||||
|
||||
auto void push (char *str);
|
||||
void push (char *str)
|
||||
{
|
||||
char **p;
|
||||
active_loops = 0;
|
||||
new_scope.argv.argc = argc;
|
||||
new_scope.argv.args = args;
|
||||
|
||||
if (oom)
|
||||
return;
|
||||
old_scope = scope;
|
||||
scope = &new_scope;
|
||||
|
||||
p = grub_realloc (argv, ALIGN_UP (sizeof(char*) * (argc + 1), ARGV_ALLOCATION_UNIT));
|
||||
if (!p)
|
||||
oom = 1;
|
||||
else
|
||||
{
|
||||
p[argc++] = str;
|
||||
argv = p;
|
||||
}
|
||||
}
|
||||
ret = grub_script_execute (func->func);
|
||||
|
||||
auto char* append (const char *str, grub_size_t nchar);
|
||||
char* append (const char *str, grub_size_t nchar)
|
||||
{
|
||||
int len;
|
||||
int old;
|
||||
char *p;
|
||||
|
||||
if (oom || !str)
|
||||
return 0;
|
||||
|
||||
len = nchar ?: grub_strlen (str);
|
||||
old = argv[argc - 1] ? grub_strlen (argv[argc - 1]) : 0;
|
||||
p = grub_realloc (argv[argc - 1], ALIGN_UP(old + len + 1, ARG_ALLOCATION_UNIT));
|
||||
|
||||
if (p)
|
||||
{
|
||||
grub_strncpy (p + old, str, len);
|
||||
p[old + len] = '\0';
|
||||
}
|
||||
else
|
||||
{
|
||||
oom = 1;
|
||||
grub_free (argv[argc - 1]);
|
||||
}
|
||||
argv[argc - 1] = p;
|
||||
return argv[argc - 1];
|
||||
}
|
||||
|
||||
/* Move *STR to the begining of next word, but return current word. */
|
||||
auto char* move_to_next (char **str);
|
||||
char* move_to_next (char **str)
|
||||
{
|
||||
char *end;
|
||||
char *start;
|
||||
|
||||
if (oom || !str || !*str)
|
||||
return 0;
|
||||
|
||||
start = *str;
|
||||
while (*start && grub_isspace (*start)) start++;
|
||||
if (*start == '\0')
|
||||
return 0;
|
||||
|
||||
end = start + 1;
|
||||
while (*end && !grub_isspace (*end)) end++;
|
||||
|
||||
*str = end;
|
||||
return start;
|
||||
}
|
||||
|
||||
oom = 0;
|
||||
argv = 0;
|
||||
argc = 0;
|
||||
push (0);
|
||||
for (; arglist; arglist = arglist->next)
|
||||
{
|
||||
empty = 1;
|
||||
arg = arglist->arg;
|
||||
while (arg)
|
||||
{
|
||||
switch (arg->type)
|
||||
{
|
||||
case GRUB_SCRIPT_ARG_TYPE_VAR:
|
||||
value = grub_env_get (arg->str);
|
||||
while (value && *value && (ptr = move_to_next(&value)))
|
||||
{
|
||||
empty = 0;
|
||||
append (ptr, value - ptr);
|
||||
if (*value) push(0);
|
||||
}
|
||||
break;
|
||||
|
||||
case GRUB_SCRIPT_ARG_TYPE_TEXT:
|
||||
if (grub_strlen (arg->str) > 0)
|
||||
{
|
||||
empty = 0;
|
||||
append (arg->str, 0);
|
||||
}
|
||||
break;
|
||||
|
||||
case GRUB_SCRIPT_ARG_TYPE_DQSTR:
|
||||
case GRUB_SCRIPT_ARG_TYPE_SQSTR:
|
||||
empty = 0;
|
||||
append (arg->str, 0);
|
||||
break;
|
||||
|
||||
case GRUB_SCRIPT_ARG_TYPE_DQVAR:
|
||||
empty = 0;
|
||||
append (grub_env_get (arg->str), 0);
|
||||
break;
|
||||
}
|
||||
arg = arg->next;
|
||||
}
|
||||
if (!empty)
|
||||
push (0);
|
||||
}
|
||||
|
||||
if (oom)
|
||||
{
|
||||
for (i = 0; i < argc; i++)
|
||||
grub_free (argv[i]);
|
||||
grub_free (argv);
|
||||
argv = 0;
|
||||
}
|
||||
|
||||
if (argv)
|
||||
*count = argc - 1;
|
||||
|
||||
return argv;
|
||||
active_loops = loops;
|
||||
scope = old_scope;
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Execute a single command line. */
|
||||
|
|
@ -196,21 +320,18 @@ grub_err_t
|
|||
grub_script_execute_cmdline (struct grub_script_cmd *cmd)
|
||||
{
|
||||
struct grub_script_cmdline *cmdline = (struct grub_script_cmdline *) cmd;
|
||||
char **args = 0;
|
||||
int i = 0;
|
||||
grub_command_t grubcmd;
|
||||
grub_err_t ret = 0;
|
||||
int argcount = 0;
|
||||
grub_script_function_t func = 0;
|
||||
char errnobuf[18];
|
||||
char *cmdname;
|
||||
struct grub_script_argv argv = { 0, 0 };
|
||||
|
||||
/* Lookup the command. */
|
||||
args = grub_script_execute_arglist_to_argv (cmdline->arglist, &argcount);
|
||||
if (!args)
|
||||
if (grub_script_arglist_to_argv (cmdline->arglist, &argv) || ! argv.args[0])
|
||||
return grub_errno;
|
||||
|
||||
cmdname = args[0];
|
||||
cmdname = argv.args[0];
|
||||
grubcmd = grub_command_find (cmdname);
|
||||
if (! grubcmd)
|
||||
{
|
||||
|
|
@ -232,13 +353,14 @@ grub_script_execute_cmdline (struct grub_script_cmd *cmd)
|
|||
/* Create two strings and set the variable. */
|
||||
*eq = '\0';
|
||||
eq++;
|
||||
grub_env_set (assign, eq);
|
||||
grub_script_env_set (assign, eq);
|
||||
}
|
||||
grub_free (assign);
|
||||
|
||||
grub_snprintf (errnobuf, sizeof (errnobuf), "%d", grub_errno);
|
||||
grub_env_set ("?", errnobuf);
|
||||
grub_script_env_set ("?", errnobuf);
|
||||
|
||||
grub_script_argv_free (&argv);
|
||||
grub_print_error ();
|
||||
|
||||
return 0;
|
||||
|
|
@ -247,14 +369,12 @@ grub_script_execute_cmdline (struct grub_script_cmd *cmd)
|
|||
|
||||
/* Execute the GRUB command or function. */
|
||||
if (grubcmd)
|
||||
ret = (grubcmd->func) (grubcmd, argcount - 1, args + 1);
|
||||
ret = (grubcmd->func) (grubcmd, argv.argc - 1, argv.args + 1);
|
||||
else
|
||||
ret = grub_script_function_call (func, argcount - 1, args + 1);
|
||||
ret = grub_script_function_call (func, argv.argc - 1, argv.args + 1);
|
||||
|
||||
/* Free arguments. */
|
||||
for (i = 0; i < argcount; i++)
|
||||
grub_free (args[i]);
|
||||
grub_free (args);
|
||||
grub_script_argv_free (&argv);
|
||||
|
||||
if (grub_errno == GRUB_ERR_TEST_FAILURE)
|
||||
grub_errno = GRUB_ERR_NONE;
|
||||
|
|
@ -269,13 +389,13 @@ grub_script_execute_cmdline (struct grub_script_cmd *cmd)
|
|||
|
||||
/* Execute a block of one or more commands. */
|
||||
grub_err_t
|
||||
grub_script_execute_cmdblock (struct grub_script_cmd *cmd)
|
||||
grub_script_execute_cmdlist (struct grub_script_cmd *list)
|
||||
{
|
||||
int ret = 0;
|
||||
struct grub_script_cmdblock *cmdblock = (struct grub_script_cmdblock *) cmd;
|
||||
struct grub_script_cmd *cmd;
|
||||
|
||||
/* Loop over every command and execute it. */
|
||||
for (cmd = cmdblock->cmdlist; cmd; cmd = cmd->next)
|
||||
for (cmd = list->next; cmd && ! active_breaks; cmd = cmd->next)
|
||||
ret = grub_script_execute_cmd (cmd);
|
||||
|
||||
return ret;
|
||||
|
|
@ -307,25 +427,34 @@ grub_script_execute_cmdif (struct grub_script_cmd *cmd)
|
|||
grub_err_t
|
||||
grub_script_execute_cmdfor (struct grub_script_cmd *cmd)
|
||||
{
|
||||
int i;
|
||||
int result;
|
||||
char **args;
|
||||
int argcount;
|
||||
unsigned i;
|
||||
grub_err_t result;
|
||||
struct grub_script_argv argv = { 0, 0 };
|
||||
|
||||
struct grub_script_cmdfor *cmdfor = (struct grub_script_cmdfor *) cmd;
|
||||
|
||||
args = grub_script_execute_arglist_to_argv (cmdfor->words, &argcount);
|
||||
if (!args)
|
||||
if (grub_script_arglist_to_argv (cmdfor->words, &argv))
|
||||
return grub_errno;
|
||||
|
||||
active_loops++;
|
||||
result = 0;
|
||||
for (i = 0; i < argcount; i++)
|
||||
for (i = 0; i < argv.argc; i++)
|
||||
{
|
||||
grub_env_set (cmdfor->name->str, args[i]);
|
||||
result = grub_script_execute_cmd (cmdfor->list);
|
||||
grub_free (args[i]);
|
||||
if (is_continue && active_breaks == 1)
|
||||
active_breaks = 0;
|
||||
|
||||
if (! active_breaks)
|
||||
{
|
||||
grub_script_env_set (cmdfor->name->str, argv.args[i]);
|
||||
result = grub_script_execute_cmd (cmdfor->list);
|
||||
}
|
||||
}
|
||||
|
||||
grub_free (args);
|
||||
if (active_breaks)
|
||||
active_breaks--;
|
||||
|
||||
active_loops--;
|
||||
grub_script_argv_free (&argv);
|
||||
return result;
|
||||
}
|
||||
|
||||
|
|
@ -337,6 +466,7 @@ grub_script_execute_cmdwhile (struct grub_script_cmd *cmd)
|
|||
int result;
|
||||
struct grub_script_cmdwhile *cmdwhile = (struct grub_script_cmdwhile *) cmd;
|
||||
|
||||
active_loops++;
|
||||
result = 0;
|
||||
do {
|
||||
cond = grub_script_execute_cmd (cmdwhile->cond);
|
||||
|
|
@ -344,8 +474,19 @@ grub_script_execute_cmdwhile (struct grub_script_cmd *cmd)
|
|||
break;
|
||||
|
||||
result = grub_script_execute_cmd (cmdwhile->list);
|
||||
|
||||
if (active_breaks == 1 && is_continue)
|
||||
active_breaks = 0;
|
||||
|
||||
if (active_breaks)
|
||||
break;
|
||||
|
||||
} while (1); /* XXX Put a check for ^C here */
|
||||
|
||||
if (active_breaks)
|
||||
active_breaks--;
|
||||
|
||||
active_loops--;
|
||||
return result;
|
||||
}
|
||||
|
||||
|
|
@ -354,26 +495,20 @@ grub_err_t
|
|||
grub_script_execute_menuentry (struct grub_script_cmd *cmd)
|
||||
{
|
||||
struct grub_script_cmd_menuentry *cmd_menuentry;
|
||||
char **args = 0;
|
||||
int argcount = 0;
|
||||
int i = 0;
|
||||
struct grub_script_argv argv = { 0, 0 };
|
||||
|
||||
cmd_menuentry = (struct grub_script_cmd_menuentry *) cmd;
|
||||
|
||||
if (cmd_menuentry->arglist)
|
||||
{
|
||||
args = grub_script_execute_arglist_to_argv (cmd_menuentry->arglist, &argcount);
|
||||
if (!args)
|
||||
if (grub_script_arglist_to_argv (cmd_menuentry->arglist, &argv))
|
||||
return grub_errno;
|
||||
}
|
||||
|
||||
grub_normal_add_menu_entry (argcount, (const char **) args,
|
||||
grub_normal_add_menu_entry (argv.argc, (const char **) argv.args,
|
||||
cmd_menuentry->sourcecode);
|
||||
|
||||
/* Free arguments. */
|
||||
for (i = 0; i < argcount; i++)
|
||||
grub_free (args[i]);
|
||||
grub_free (args);
|
||||
grub_script_argv_free (&argv);
|
||||
|
||||
return grub_errno;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -103,12 +103,3 @@ grub_script_function_find (char *functionname)
|
|||
|
||||
return func;
|
||||
}
|
||||
|
||||
int
|
||||
grub_script_function_call (grub_script_function_t func,
|
||||
int argc __attribute__((unused)),
|
||||
char **args __attribute__((unused)))
|
||||
{
|
||||
/* XXX: Arguments are not supported yet. */
|
||||
return grub_script_execute (func->func);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -17,6 +17,7 @@
|
|||
*/
|
||||
|
||||
#include <grub/dl.h>
|
||||
#include <grub/i18n.h>
|
||||
#include <grub/parser.h>
|
||||
#include <grub/script_sh.h>
|
||||
|
||||
|
|
@ -39,3 +40,34 @@ grub_normal_parse_line (char *line, grub_reader_getline_t getline)
|
|||
|
||||
return grub_errno;
|
||||
}
|
||||
|
||||
static grub_command_t cmd_break;
|
||||
static grub_command_t cmd_continue;
|
||||
static grub_command_t cmd_shift;
|
||||
|
||||
void
|
||||
grub_script_init (void)
|
||||
{
|
||||
cmd_break = grub_register_command ("break", grub_script_break,
|
||||
N_("[n]"), N_("Exit from loops"));
|
||||
cmd_continue = grub_register_command ("continue", grub_script_break,
|
||||
N_("[n]"), N_("Continue loops"));
|
||||
cmd_shift = grub_register_command ("shift", grub_script_shift,
|
||||
N_("[n]"), N_("Shift positional parameters."));
|
||||
}
|
||||
|
||||
void
|
||||
grub_script_fini (void)
|
||||
{
|
||||
if (cmd_break)
|
||||
grub_unregister_command (cmd_break);
|
||||
cmd_break = 0;
|
||||
|
||||
if (cmd_continue)
|
||||
grub_unregister_command (cmd_continue);
|
||||
cmd_continue = 0;
|
||||
|
||||
if (cmd_shift)
|
||||
grub_unregister_command (cmd_shift);
|
||||
cmd_shift = 0;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -97,9 +97,7 @@ script: newlines0
|
|||
}
|
||||
| script statement delimiter newlines0
|
||||
{
|
||||
struct grub_script_cmdblock *cmdblock;
|
||||
cmdblock = (struct grub_script_cmdblock *) $1;
|
||||
$$ = grub_script_add_cmd (state, cmdblock, $2);
|
||||
$$ = grub_script_append_cmd (state, $1, $2);
|
||||
}
|
||||
| error
|
||||
{
|
||||
|
|
@ -185,13 +183,11 @@ command: grubcmd { $$ = $1; }
|
|||
/* A list of commands. */
|
||||
commands1: newlines0 command
|
||||
{
|
||||
$$ = grub_script_add_cmd (state, 0, $2);
|
||||
$$ = grub_script_append_cmd (state, 0, $2);
|
||||
}
|
||||
| commands1 delimiters1 command
|
||||
{
|
||||
struct grub_script_cmdblock *cmdblock;
|
||||
cmdblock = (struct grub_script_cmdblock *) $1;
|
||||
$$ = grub_script_add_cmd (state, cmdblock, $3);
|
||||
$$ = grub_script_append_cmd (state, $1, $3);
|
||||
}
|
||||
;
|
||||
|
||||
|
|
|
|||
|
|
@ -291,46 +291,40 @@ grub_script_create_cmdmenu (struct grub_parser_param *state,
|
|||
return (struct grub_script_cmd *) cmd;
|
||||
}
|
||||
|
||||
/* Create a block of commands. CMD contains the command that should
|
||||
be added at the end of CMDBLOCK's list. If CMDBLOCK is zero, a new
|
||||
cmdblock will be created. */
|
||||
/* Create a chain of commands. LAST contains the command that should
|
||||
be added at the end of LIST's list. If LIST is zero, a new list
|
||||
will be created. */
|
||||
struct grub_script_cmd *
|
||||
grub_script_add_cmd (struct grub_parser_param *state,
|
||||
struct grub_script_cmdblock *cmdblock,
|
||||
struct grub_script_cmd *cmd)
|
||||
grub_script_append_cmd (struct grub_parser_param *state,
|
||||
struct grub_script_cmd *list,
|
||||
struct grub_script_cmd *last)
|
||||
{
|
||||
struct grub_script_cmd *ptr;
|
||||
|
||||
grub_dprintf ("scripting", "cmdblock\n");
|
||||
grub_dprintf ("scripting", "append command\n");
|
||||
|
||||
if (!cmd)
|
||||
return (struct grub_script_cmd *) cmdblock;
|
||||
if (! last)
|
||||
return list;
|
||||
|
||||
if (!cmdblock)
|
||||
if (! list)
|
||||
{
|
||||
cmdblock = grub_script_malloc (state, sizeof (*cmdblock));
|
||||
if (!cmdblock)
|
||||
list = grub_script_malloc (state, sizeof (*list));
|
||||
if (! list)
|
||||
return 0;
|
||||
|
||||
cmdblock->cmd.exec = grub_script_execute_cmdblock;
|
||||
cmdblock->cmd.next = 0;
|
||||
cmdblock->cmdlist = cmd;
|
||||
cmd->next = 0;
|
||||
list->exec = grub_script_execute_cmdlist;
|
||||
list->next = last;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (!cmdblock->cmdlist)
|
||||
cmdblock->cmdlist = cmd;
|
||||
else
|
||||
{
|
||||
ptr = cmdblock->cmdlist;
|
||||
while (ptr->next)
|
||||
ptr = ptr->next;
|
||||
ptr->next = cmd;
|
||||
}
|
||||
ptr = list;
|
||||
while (ptr->next)
|
||||
ptr = ptr->next;
|
||||
|
||||
ptr->next = last;
|
||||
}
|
||||
|
||||
return (struct grub_script_cmd *) cmdblock;
|
||||
return list;
|
||||
}
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -116,10 +116,11 @@ COMMENT #.*$
|
|||
|
||||
CHAR [^{}|&$;<> \t\n\'\"\\]
|
||||
DIGITS [[:digit:]]+
|
||||
NAME [[:alpha:]_][[:alnum:][:digit:]_]*
|
||||
NAME [[:alpha:]_][[:alnum:]_]*
|
||||
|
||||
ESC \\.
|
||||
VARIABLE ${NAME}|$\{{NAME}\}|${DIGITS}|$\{{DIGITS}\}|$\?|$\{\?\}
|
||||
SPECIAL \?|\#|\*|\@
|
||||
VARIABLE ${NAME}|$\{{NAME}\}|${DIGITS}|$\{{DIGITS}\}|${SPECIAL}|$\{{SPECIAL}\}
|
||||
DQSTR \"([^\\\"]|{ESC})*\"
|
||||
SQSTR \'[^\']*\'
|
||||
WORD ({CHAR}|{DQSTR}|{SQSTR}|{ESC}|{VARIABLE})+
|
||||
|
|
@ -221,7 +222,7 @@ WORD ({CHAR}|{DQSTR}|{SQSTR}|{ESC}|{VARIABLE})+
|
|||
}
|
||||
|
||||
<VAR>{
|
||||
\? |
|
||||
{SPECIAL} |
|
||||
{DIGITS} |
|
||||
{NAME} {
|
||||
COPY (yytext, yyleng);
|
||||
|
|
@ -231,7 +232,7 @@ WORD ({CHAR}|{DQSTR}|{SQSTR}|{ESC}|{VARIABLE})+
|
|||
else
|
||||
ARG (GRUB_SCRIPT_ARG_TYPE_DQVAR);
|
||||
}
|
||||
\{\?\} |
|
||||
\{{SPECIAL}\} |
|
||||
\{{DIGITS}\} |
|
||||
\{{NAME}\} {
|
||||
yytext[yyleng - 1] = '\0';
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue