385bd9c12e
* kern/env.c (struct grub_env_context): Removed "sorted". Renamed
"next" to "prev" for readability.
(struct grub_env_sorted_var): New struct.
(grub_env_context): Renamed to ...
(initial_context): ... this.
(grub_env_var_context): Renamed to ...
(current_context): ... this.
(grub_env_find): Look only at CURRENT_CONTEXT.
(grub_env_context_open): Rewritten to copy exported variables from
previous context.
(grub_env_context_close): Rewritten according to the new
scheme. Also, add an assertion to prevent the initial context from
removed.
(grub_env_insert): Removed the code for the sorted list.
(grub_env_remove): Likewise.
(grub_env_export): Simply mark the variable with
GRUB_ENV_VAR_GLOBAL.
(grub_env_set): A cosmetic change for naming consistency.
(grub_env_get): Likewise.
(grub_env_unset): Likewise.
(grub_env_iterate): Rewritten to sort variables within this
function.
(grub_register_variable_hook): Fixed for naming consistency. Call
grub_env_find again, only if NAME is not found at the first time.
(mangle_data_slot_name): New function.
(grub_env_set_data_slot): Likewise.
(grub_env_get_data_slot): Likewise.
(grub_env_unset_data_slot): Likewise.
* include/grub/env.h (grub_env_var_type): New enum.
(GRUB_ENV_VAR_LOCAL): New constant.
(GRUB_ENV_VAR_GLOBAL): Likewise.
(GRUB_ENV_VAR_DATA): Likewise.
(struct grub_env_var): Removed "sort_next" and "sort_prevp". Added
"type".
(grub_env_set): Replace VAR with NAME for consistency.
(grub_register_variable_hook): Likewise.
(grub_env_export): Specify the name of the argument.
(grub_env_set_data_slot): New prototype.
(grub_env_get_data_slot): Likewise.
(grub_env_unset_data_slot): Likewise.
73 lines
2.4 KiB
C
73 lines
2.4 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2003,2005,2006 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 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 GRUB; 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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#ifndef GRUB_ENV_HEADER
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#define GRUB_ENV_HEADER 1
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#include <grub/symbol.h>
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#include <grub/err.h>
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#include <grub/types.h>
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struct grub_env_var;
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typedef char *(*grub_env_read_hook_t) (struct grub_env_var *var,
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const char *val);
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typedef char *(*grub_env_write_hook_t) (struct grub_env_var *var,
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const char *val);
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enum grub_env_var_type
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{
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/* The default variable type which is local in current context. */
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GRUB_ENV_VAR_LOCAL,
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/* The exported type, which is passed to new contexts. */
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GRUB_ENV_VAR_GLOBAL,
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/* The data slot type, which is used to store arbitrary data. */
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GRUB_ENV_VAR_DATA
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};
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struct grub_env_var
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{
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char *name;
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char *value;
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grub_env_read_hook_t read_hook;
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grub_env_write_hook_t write_hook;
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struct grub_env_var *next;
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struct grub_env_var **prevp;
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enum grub_env_var_type type;
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};
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grub_err_t EXPORT_FUNC(grub_env_set) (const char *name, const char *val);
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char *EXPORT_FUNC(grub_env_get) (const char *name);
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void EXPORT_FUNC(grub_env_unset) (const char *name);
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void EXPORT_FUNC(grub_env_iterate) (int (*func) (struct grub_env_var *var));
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grub_err_t EXPORT_FUNC(grub_register_variable_hook) (const char *name,
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grub_env_read_hook_t read_hook,
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grub_env_write_hook_t write_hook);
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grub_err_t EXPORT_FUNC(grub_env_context_open) (void);
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grub_err_t EXPORT_FUNC(grub_env_context_close) (void);
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grub_err_t EXPORT_FUNC(grub_env_export) (const char *name);
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grub_err_t EXPORT_FUNC(grub_env_set_data_slot) (const char *name,
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const void *ptr);
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void *EXPORT_FUNC(grub_env_get_data_slot) (const char *name);
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void EXPORT_FUNC(grub_env_unset_data_slot) (const char *name);
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#endif /* ! GRUB_ENV_HEADER */
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