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1d6cd0a3f6
Use the variable access flags to implement the protection for ethaddr and serial# instead of hard-coding them. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
173 lines
4.8 KiB
C
173 lines
4.8 KiB
C
/*
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* (C) Copyright 2012
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* Joe Hershberger, National Instruments, joe.hershberger@ni.com
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (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 this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#ifndef __ENV_FLAGS_H__
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#define __ENV_FLAGS_H__
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enum env_flags_vartype {
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env_flags_vartype_string,
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env_flags_vartype_decimal,
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env_flags_vartype_hex,
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env_flags_vartype_bool,
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#ifdef CONFIG_CMD_NET
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env_flags_vartype_ipaddr,
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env_flags_vartype_macaddr,
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#endif
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env_flags_vartype_end
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};
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enum env_flags_varaccess {
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env_flags_varaccess_any,
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env_flags_varaccess_readonly,
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env_flags_varaccess_writeonce,
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env_flags_varaccess_changedefault,
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env_flags_varaccess_end
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};
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#define ENV_FLAGS_VAR ".flags"
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#define ENV_FLAGS_ATTR_MAX_LEN 2
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#define ENV_FLAGS_VARTYPE_LOC 0
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#define ENV_FLAGS_VARACCESS_LOC 1
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#ifndef CONFIG_ENV_FLAGS_LIST_STATIC
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#define CONFIG_ENV_FLAGS_LIST_STATIC ""
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#endif
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#ifdef CONFIG_CMD_NET
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#ifdef CONFIG_ENV_OVERWRITE
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#define ETHADDR_FLAGS "ethaddr:ma,"
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#else
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#ifdef CONFIG_OVERWRITE_ETHADDR_ONCE
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#define ETHADDR_FLAGS "ethaddr:mc,"
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#else
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#define ETHADDR_FLAGS "ethaddr:mo,"
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#endif
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#endif
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#else
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#define ETHADDR_FLAGS ""
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#endif
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#ifndef CONFIG_ENV_OVERWRITE
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#define SERIAL_FLAGS "serial#:so,"
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#else
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#define SERIAL_FLAGS ""
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#endif
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#define ENV_FLAGS_LIST_STATIC \
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ETHADDR_FLAGS \
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SERIAL_FLAGS \
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CONFIG_ENV_FLAGS_LIST_STATIC
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#ifdef CONFIG_CMD_ENV_FLAGS
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/*
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* Print the whole list of available type flags.
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*/
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void env_flags_print_vartypes(void);
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/*
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* Print the whole list of available access flags.
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*/
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void env_flags_print_varaccess(void);
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/*
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* Return the name of the type.
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*/
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const char *env_flags_get_vartype_name(enum env_flags_vartype type);
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/*
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* Return the name of the access.
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*/
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const char *env_flags_get_varaccess_name(enum env_flags_varaccess access);
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#endif
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/*
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* Parse the flags string from a .flags attribute list into the vartype enum.
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*/
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enum env_flags_vartype env_flags_parse_vartype(const char *flags);
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/*
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* Parse the flags string from a .flags attribute list into the varaccess enum.
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*/
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enum env_flags_varaccess env_flags_parse_varaccess(const char *flags);
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/*
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* Parse the binary flags from a hash table entry into the varaccess enum.
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*/
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enum env_flags_varaccess env_flags_parse_varaccess_from_binflags(int binflags);
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#ifdef USE_HOSTCC
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/*
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* Look up the type of a variable directly from the .flags var.
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*/
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enum env_flags_vartype env_flags_get_type(const char *name);
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/*
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* Look up the access of a variable directly from the .flags var.
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*/
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enum env_flags_varaccess env_flags_get_access(const char *name);
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/*
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* Validate the newval for its type to conform with the requirements defined by
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* its flags (directly looked at the .flags var).
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*/
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int env_flags_validate_type(const char *name, const char *newval);
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/*
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* Validate the newval for its access to conform with the requirements defined
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* by its flags (directly looked at the .flags var).
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*/
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int env_flags_validate_access(const char *name, int check_mask);
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/*
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* Validate that the proposed access to variable "name" is valid according to
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* the defined flags for that variable, if any.
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*/
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int env_flags_validate_varaccess(const char *name, int check_mask);
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/*
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* Validate the parameters passed to "env set" for type compliance
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*/
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int env_flags_validate_env_set_params(int argc, char * const argv[]);
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#else /* !USE_HOSTCC */
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#include <search.h>
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/*
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* When adding a variable to the environment, initialize the flags for that
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* variable.
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*/
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void env_flags_init(ENTRY *var_entry);
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/*
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* Validate the newval for to conform with the requirements defined by its flags
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*/
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int env_flags_validate(const ENTRY *item, const char *newval, enum env_op op,
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int flag);
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#endif /* USE_HOSTCC */
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/*
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* These are the binary flags used in the environment entry->flags variable to
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* decribe properties of veriables in the table
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*/
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#define ENV_FLAGS_VARTYPE_BIN_MASK 0x00000007
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/* The actual variable type values use the enum value (within the mask) */
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#define ENV_FLAGS_VARACCESS_PREVENT_DELETE 0x00000008
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#define ENV_FLAGS_VARACCESS_PREVENT_CREATE 0x00000010
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#define ENV_FLAGS_VARACCESS_PREVENT_OVERWR 0x00000020
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#define ENV_FLAGS_VARACCESS_PREVENT_NONDEF_OVERWR 0x00000040
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#define ENV_FLAGS_VARACCESS_BIN_MASK 0x00000078
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#endif /* __ENV_FLAGS_H__ */
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