3 * Joe Hershberger, National Instruments, joe.hershberger@ni.com
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 #ifndef __ENV_FLAGS_H__
25 #define __ENV_FLAGS_H__
27 enum env_flags_vartype {
28 env_flags_vartype_string,
29 env_flags_vartype_decimal,
30 env_flags_vartype_hex,
31 env_flags_vartype_bool,
33 env_flags_vartype_ipaddr,
34 env_flags_vartype_macaddr,
39 enum env_flags_varaccess {
40 env_flags_varaccess_any,
41 env_flags_varaccess_readonly,
42 env_flags_varaccess_writeonce,
43 env_flags_varaccess_changedefault,
44 env_flags_varaccess_end
47 #define ENV_FLAGS_VAR ".flags"
48 #define ENV_FLAGS_ATTR_MAX_LEN 2
49 #define ENV_FLAGS_VARTYPE_LOC 0
50 #define ENV_FLAGS_VARACCESS_LOC 1
52 #ifndef CONFIG_ENV_FLAGS_LIST_STATIC
53 #define CONFIG_ENV_FLAGS_LIST_STATIC ""
56 #define ENV_FLAGS_LIST_STATIC \
57 CONFIG_ENV_FLAGS_LIST_STATIC
59 #ifdef CONFIG_CMD_ENV_FLAGS
61 * Print the whole list of available type flags.
63 void env_flags_print_vartypes(void);
65 * Print the whole list of available access flags.
67 void env_flags_print_varaccess(void);
69 * Return the name of the type.
71 const char *env_flags_get_vartype_name(enum env_flags_vartype type);
73 * Return the name of the access.
75 const char *env_flags_get_varaccess_name(enum env_flags_varaccess access);
79 * Parse the flags string from a .flags attribute list into the vartype enum.
81 enum env_flags_vartype env_flags_parse_vartype(const char *flags);
83 * Parse the flags string from a .flags attribute list into the varaccess enum.
85 enum env_flags_varaccess env_flags_parse_varaccess(const char *flags);
87 * Parse the binary flags from a hash table entry into the varaccess enum.
89 enum env_flags_varaccess env_flags_parse_varaccess_from_binflags(int binflags);
93 * Look up the type of a variable directly from the .flags var.
95 enum env_flags_vartype env_flags_get_type(const char *name);
97 * Look up the access of a variable directly from the .flags var.
99 enum env_flags_varaccess env_flags_get_access(const char *name);
101 * Validate the newval for its type to conform with the requirements defined by
102 * its flags (directly looked at the .flags var).
104 int env_flags_validate_type(const char *name, const char *newval);
106 * Validate the newval for its access to conform with the requirements defined
107 * by its flags (directly looked at the .flags var).
109 int env_flags_validate_access(const char *name, int check_mask);
111 * Validate that the proposed access to variable "name" is valid according to
112 * the defined flags for that variable, if any.
114 int env_flags_validate_varaccess(const char *name, int check_mask);
116 * Validate the parameters passed to "env set" for type compliance
118 int env_flags_validate_env_set_params(int argc, char * const argv[]);
120 #else /* !USE_HOSTCC */
125 * When adding a variable to the environment, initialize the flags for that
128 void env_flags_init(ENTRY *var_entry);
131 * Validate the newval for to conform with the requirements defined by its flags
133 int env_flags_validate(const ENTRY *item, const char *newval, enum env_op op,
136 #endif /* USE_HOSTCC */
139 * These are the binary flags used in the environment entry->flags variable to
140 * decribe properties of veriables in the table
142 #define ENV_FLAGS_VARTYPE_BIN_MASK 0x00000007
143 /* The actual variable type values use the enum value (within the mask) */
144 #define ENV_FLAGS_VARACCESS_PREVENT_DELETE 0x00000008
145 #define ENV_FLAGS_VARACCESS_PREVENT_CREATE 0x00000010
146 #define ENV_FLAGS_VARACCESS_PREVENT_OVERWR 0x00000020
147 #define ENV_FLAGS_VARACCESS_PREVENT_NONDEF_OVERWR 0x00000040
148 #define ENV_FLAGS_VARACCESS_BIN_MASK 0x00000078
150 #endif /* __ENV_FLAGS_H__ */