5f968e1e61
Change the semantics of variable hooks. They now return strings instead of error values. * util/i386/pc/grub-setup.c: Include grub/env.h. (setup): Use grub_device_set_root instead of grub_env_set. * kern/rescue.c (grub_rescue_cmd_root): Use grub_env_set and grub_env_get instead of grub_device_set_root and grub_device_get_root, respectively. * kern/main.c (grub_env_write_root): New function. (grub_set_root_dev): Register grub_env_write_hook for "root". Use grub_env_set instead of grub_device_set_root. * kern/env.c (HASHSZ): Reduced to 13, because GRUB does not need many variables. (grub_env_set): Set ENV->VALUE to the result of ENV->WRITE_HOOK rather than calling ENV->WRITE_HOOK afterwards. (grub_env_get): Return the result of ENV->READ_HOOK rather than passing a pointer of a pointer. (grub_register_variable_hook): Change the types of "read_hook" and "write_hook" to grub_env_read_hook_t and grub_env_write_hook_t, respectively. Allocate the default empty string on the heap, because this string may be freed later. * kern/device.c: Include grub/env.h. (grub_device_set_root): Removed. (grub_device_get_root): Likewise. (grub_device_open): Use grub_env_get instead of grub_device_get_root. * include/grub/env.h (grub_env_read_hook_t): New type. (grub_env_write_hook_t): Likewise. (grub_env_var): Change the types of "read_hook" and "write_hook" to grub_env_read_hook_t and grub_env_write_hook_t, respectively. (grub_register_variable_hook): Likewise. * include/grub/device.h (grub_device_set_root): Removed. (grub_device_set_root): Likewise. * fs/fat.c (grub_fat_dir): Make a copy of PATH in DIRNAME, and make sure that DIRNAME terminates with '/', so that grub_fat_find_dir will fail if PATH is not a directory. * commands/ls.c (grub_ls_list_files): Remove the qualifier const from DIRNAME. Use the qualifier auto for print_files and print_files_long. If FS->DIR sets GRUB_ERRNO to GRUB_ERR_BAD_FILE_TYPE, try DIRNAME as a regular file. Put a newline only if there is no error. (grub_cmd_ls): Remove grub_ls_print_files, because this is not used.
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2003,2005 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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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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struct grub_env_var *sort_next;
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struct grub_env_var **sort_prevp;
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};
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grub_err_t EXPORT_FUNC(grub_env_set) (const char *var, 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 *var,
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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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#endif /* ! GRUB_ENV_HEADER */
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