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726f6388 JA |
1 | /* variables.h -- data structures for shell variables. */ |
2 | ||
a0c0a00f | 3 | /* Copyright (C) 1987-2015 Free Software Foundation, Inc. |
bb70624e JA |
4 | |
5 | This file is part of GNU Bash, the Bourne Again SHell. | |
6 | ||
3185942a JA |
7 | Bash is free software: you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation, either version 3 of the License, or | |
10 | (at your option) any later version. | |
bb70624e | 11 | |
3185942a JA |
12 | Bash is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
bb70624e JA |
16 | |
17 | You should have received a copy of the GNU General Public License | |
3185942a JA |
18 | along with Bash. If not, see <http://www.gnu.org/licenses/>. |
19 | */ | |
bb70624e | 20 | |
726f6388 JA |
21 | #if !defined (_VARIABLES_H_) |
22 | #define _VARIABLES_H_ | |
23 | ||
24 | #include "stdc.h" | |
ccc6cda3 | 25 | #include "array.h" |
3185942a | 26 | #include "assoc.h" |
726f6388 JA |
27 | |
28 | /* Shell variables and functions are stored in hash tables. */ | |
ccc6cda3 | 29 | #include "hashlib.h" |
726f6388 | 30 | |
f73dda09 | 31 | #include "conftypes.h" |
b72432fd | 32 | |
7117c2d2 JA |
33 | /* A variable context. */ |
34 | typedef struct var_context { | |
35 | char *name; /* empty or NULL means global context */ | |
36 | int scope; /* 0 means global context */ | |
37 | int flags; | |
38 | struct var_context *up; /* previous function calls */ | |
39 | struct var_context *down; /* down towards global context */ | |
40 | HASH_TABLE *table; /* variables at this scope */ | |
41 | } VAR_CONTEXT; | |
42 | ||
43 | /* Flags for var_context->flags */ | |
44 | #define VC_HASLOCAL 0x01 | |
45 | #define VC_HASTMPVAR 0x02 | |
46 | #define VC_FUNCENV 0x04 /* also function if name != NULL */ | |
47 | #define VC_BLTNENV 0x08 /* builtin_env */ | |
48 | #define VC_TEMPENV 0x10 /* temporary_env */ | |
49 | ||
50 | #define VC_TEMPFLAGS (VC_FUNCENV|VC_BLTNENV|VC_TEMPENV) | |
51 | ||
52 | /* Accessing macros */ | |
53 | #define vc_isfuncenv(vc) (((vc)->flags & VC_FUNCENV) != 0) | |
54 | #define vc_isbltnenv(vc) (((vc)->flags & VC_BLTNENV) != 0) | |
55 | #define vc_istempenv(vc) (((vc)->flags & (VC_TEMPFLAGS)) == VC_TEMPENV) | |
56 | ||
57 | #define vc_istempscope(vc) (((vc)->flags & (VC_TEMPENV|VC_BLTNENV)) != 0) | |
58 | ||
59 | #define vc_haslocals(vc) (((vc)->flags & VC_HASLOCAL) != 0) | |
60 | #define vc_hastmpvars(vc) (((vc)->flags & VC_HASTMPVAR) != 0) | |
61 | ||
726f6388 JA |
62 | /* What a shell variable looks like. */ |
63 | ||
7117c2d2 | 64 | typedef struct variable *sh_var_value_func_t __P((struct variable *)); |
3185942a | 65 | typedef struct variable *sh_var_assign_func_t __P((struct variable *, char *, arrayind_t, char *)); |
7117c2d2 JA |
66 | |
67 | /* For the future */ | |
68 | union _value { | |
69 | char *s; /* string value */ | |
70 | intmax_t i; /* int value */ | |
71 | COMMAND *f; /* function */ | |
72 | ARRAY *a; /* array */ | |
73 | HASH_TABLE *h; /* associative array */ | |
74 | double d; /* floating point number */ | |
b80f6443 JA |
75 | #if defined (HAVE_LONG_DOUBLE) |
76 | long double ld; /* long double */ | |
77 | #endif | |
78 | struct variable *v; /* possible indirect variable use */ | |
79 | void *opaque; /* opaque data for future use */ | |
7117c2d2 | 80 | }; |
726f6388 JA |
81 | |
82 | typedef struct variable { | |
83 | char *name; /* Symbol that the user types. */ | |
84 | char *value; /* Value that is returned. */ | |
bb70624e | 85 | char *exportstr; /* String for the environment. */ |
7117c2d2 | 86 | sh_var_value_func_t *dynamic_value; /* Function called to return a `dynamic' |
726f6388 JA |
87 | value for a variable, like $SECONDS |
88 | or $RANDOM. */ | |
7117c2d2 | 89 | sh_var_assign_func_t *assign_func; /* Function called when this `special |
726f6388 JA |
90 | variable' is assigned a value in |
91 | bind_variable. */ | |
92 | int attributes; /* export, readonly, array, invisible... */ | |
93 | int context; /* Which context this variable belongs to. */ | |
726f6388 JA |
94 | } SHELL_VAR; |
95 | ||
7117c2d2 JA |
96 | typedef struct _vlist { |
97 | SHELL_VAR **list; | |
98 | int list_size; /* allocated size */ | |
99 | int list_len; /* current number of entries */ | |
100 | } VARLIST; | |
101 | ||
cce855bc | 102 | /* The various attributes that a given variable can have. */ |
7117c2d2 JA |
103 | /* First, the user-visible attributes */ |
104 | #define att_exported 0x0000001 /* export to environment */ | |
105 | #define att_readonly 0x0000002 /* cannot change */ | |
106 | #define att_array 0x0000004 /* value is an array */ | |
107 | #define att_function 0x0000008 /* value is a function */ | |
108 | #define att_integer 0x0000010 /* internal representation is int */ | |
109 | #define att_local 0x0000020 /* variable is local to a function */ | |
110 | #define att_assoc 0x0000040 /* variable is an associative array */ | |
111 | #define att_trace 0x0000080 /* function is traced with DEBUG trap */ | |
3185942a JA |
112 | #define att_uppercase 0x0000100 /* word converted to uppercase on assignment */ |
113 | #define att_lowercase 0x0000200 /* word converted to lowercase on assignment */ | |
114 | #define att_capcase 0x0000400 /* word capitalized on assignment */ | |
ac50fbac | 115 | #define att_nameref 0x0000800 /* word is a name reference */ |
3185942a | 116 | |
ac50fbac | 117 | #define user_attrs (att_exported|att_readonly|att_integer|att_local|att_trace|att_uppercase|att_lowercase|att_capcase|att_nameref) |
7117c2d2 JA |
118 | |
119 | #define attmask_user 0x0000fff | |
120 | ||
121 | /* Internal attributes used for bookkeeping */ | |
122 | #define att_invisible 0x0001000 /* cannot see */ | |
123 | #define att_nounset 0x0002000 /* cannot unset */ | |
124 | #define att_noassign 0x0004000 /* assignment not allowed */ | |
125 | #define att_imported 0x0008000 /* came from environment */ | |
126 | #define att_special 0x0010000 /* requires special handling */ | |
3185942a | 127 | #define att_nofree 0x0020000 /* do not free value on unset */ |
7117c2d2 JA |
128 | |
129 | #define attmask_int 0x00ff000 | |
130 | ||
131 | /* Internal attributes used for variable scoping. */ | |
132 | #define att_tempvar 0x0100000 /* variable came from the temp environment */ | |
133 | #define att_propagate 0x0200000 /* propagate to previous scope */ | |
134 | ||
135 | #define attmask_scope 0x0f00000 | |
726f6388 JA |
136 | |
137 | #define exported_p(var) ((((var)->attributes) & (att_exported))) | |
138 | #define readonly_p(var) ((((var)->attributes) & (att_readonly))) | |
726f6388 JA |
139 | #define array_p(var) ((((var)->attributes) & (att_array))) |
140 | #define function_p(var) ((((var)->attributes) & (att_function))) | |
141 | #define integer_p(var) ((((var)->attributes) & (att_integer))) | |
ccc6cda3 | 142 | #define local_p(var) ((((var)->attributes) & (att_local))) |
7117c2d2 JA |
143 | #define assoc_p(var) ((((var)->attributes) & (att_assoc))) |
144 | #define trace_p(var) ((((var)->attributes) & (att_trace))) | |
3185942a JA |
145 | #define uppercase_p(var) ((((var)->attributes) & (att_uppercase))) |
146 | #define lowercase_p(var) ((((var)->attributes) & (att_lowercase))) | |
147 | #define capcase_p(var) ((((var)->attributes) & (att_capcase))) | |
ac50fbac | 148 | #define nameref_p(var) ((((var)->attributes) & (att_nameref))) |
7117c2d2 JA |
149 | |
150 | #define invisible_p(var) ((((var)->attributes) & (att_invisible))) | |
151 | #define non_unsettable_p(var) ((((var)->attributes) & (att_nounset))) | |
28ef6c31 | 152 | #define noassign_p(var) ((((var)->attributes) & (att_noassign))) |
7117c2d2 JA |
153 | #define imported_p(var) ((((var)->attributes) & (att_imported))) |
154 | #define specialvar_p(var) ((((var)->attributes) & (att_special))) | |
3185942a | 155 | #define nofree_p(var) ((((var)->attributes) & (att_nofree))) |
7117c2d2 JA |
156 | |
157 | #define tempvar_p(var) ((((var)->attributes) & (att_tempvar))) | |
158 | ||
a0c0a00f CR |
159 | /* Variable names: lvalues */ |
160 | #define name_cell(var) ((var)->name) | |
161 | ||
7117c2d2 JA |
162 | /* Acessing variable values: rvalues */ |
163 | #define value_cell(var) ((var)->value) | |
164 | #define function_cell(var) (COMMAND *)((var)->value) | |
165 | #define array_cell(var) (ARRAY *)((var)->value) | |
3185942a | 166 | #define assoc_cell(var) (HASH_TABLE *)((var)->value) |
ac50fbac CR |
167 | #define nameref_cell(var) ((var)->value) /* so it can change later */ |
168 | ||
169 | #define NAMEREF_MAX 8 /* only 8 levels of nameref indirection */ | |
7117c2d2 | 170 | |
7117c2d2 | 171 | #define var_isset(var) ((var)->value != 0) |
a0c0a00f CR |
172 | #define var_isunset(var) ((var)->value == 0) |
173 | #define var_isnull(var) ((var)->value && *(var)->value == 0) | |
7117c2d2 JA |
174 | |
175 | /* Assigning variable values: lvalues */ | |
176 | #define var_setvalue(var, str) ((var)->value = (str)) | |
177 | #define var_setfunc(var, func) ((var)->value = (char *)(func)) | |
178 | #define var_setarray(var, arr) ((var)->value = (char *)(arr)) | |
3185942a | 179 | #define var_setassoc(var, arr) ((var)->value = (char *)(arr)) |
ac50fbac | 180 | #define var_setref(var, str) ((var)->value = (str)) |
726f6388 | 181 | |
7117c2d2 JA |
182 | /* Make VAR be auto-exported. */ |
183 | #define set_auto_export(var) \ | |
184 | do { (var)->attributes |= att_exported; array_needs_making = 1; } while (0) | |
ccc6cda3 JA |
185 | |
186 | #define SETVARATTR(var, attr, undo) \ | |
bb70624e JA |
187 | ((undo == 0) ? ((var)->attributes |= (attr)) \ |
188 | : ((var)->attributes &= ~(attr))) | |
189 | ||
190 | #define VSETATTR(var, attr) ((var)->attributes |= (attr)) | |
191 | #define VUNSETATTR(var, attr) ((var)->attributes &= ~(attr)) | |
192 | ||
f73dda09 JA |
193 | #define VGETFLAGS(var) ((var)->attributes) |
194 | ||
195 | #define VSETFLAGS(var, flags) ((var)->attributes = (flags)) | |
196 | #define VCLRFLAGS(var) ((var)->attributes = 0) | |
197 | ||
bb70624e JA |
198 | /* Macros to perform various operations on `exportstr' member of a SHELL_VAR. */ |
199 | #define CLEAR_EXPORTSTR(var) (var)->exportstr = (char *)NULL | |
200 | #define COPY_EXPORTSTR(var) ((var)->exportstr) ? savestring ((var)->exportstr) : (char *)NULL | |
201 | #define SET_EXPORTSTR(var, value) (var)->exportstr = (value) | |
202 | #define SAVE_EXPORTSTR(var, value) (var)->exportstr = (value) ? savestring (value) : (char *)NULL | |
203 | ||
204 | #define FREE_EXPORTSTR(var) \ | |
7117c2d2 | 205 | do { if ((var)->exportstr) free ((var)->exportstr); } while (0) |
bb70624e | 206 | |
bb70624e | 207 | #define CACHE_IMPORTSTR(var, value) \ |
7117c2d2 | 208 | (var)->exportstr = savestring (value) |
bb70624e JA |
209 | |
210 | #define INVALIDATE_EXPORTSTR(var) \ | |
211 | do { \ | |
212 | if ((var)->exportstr) \ | |
213 | { \ | |
7117c2d2 | 214 | free ((var)->exportstr); \ |
bb70624e | 215 | (var)->exportstr = (char *)NULL; \ |
bb70624e JA |
216 | } \ |
217 | } while (0) | |
a0c0a00f CR |
218 | |
219 | #define ifsname(s) ((s)[0] == 'I' && (s)[1] == 'F' && (s)[2] == 'S' && (s)[3] == '\0') | |
220 | ||
221 | /* Special value for nameref with invalid value for creation or assignment */ | |
222 | extern SHELL_VAR nameref_invalid_value; | |
223 | #define INVALID_NAMEREF_VALUE (void *)&nameref_invalid_value | |
bb70624e | 224 | |
726f6388 | 225 | /* Stuff for hacking variables. */ |
f73dda09 JA |
226 | typedef int sh_var_map_func_t __P((SHELL_VAR *)); |
227 | ||
7117c2d2 JA |
228 | /* Where we keep the variables and functions */ |
229 | extern VAR_CONTEXT *global_variables; | |
230 | extern VAR_CONTEXT *shell_variables; | |
231 | ||
232 | extern HASH_TABLE *shell_functions; | |
233 | extern HASH_TABLE *temporary_env; | |
234 | ||
726f6388 | 235 | extern int variable_context; |
726f6388 JA |
236 | extern char *dollar_vars[]; |
237 | extern char **export_env; | |
726f6388 | 238 | |
ccc6cda3 JA |
239 | extern void initialize_shell_variables __P((char **, int)); |
240 | extern SHELL_VAR *set_if_not __P((char *, char *)); | |
28ef6c31 | 241 | |
7117c2d2 | 242 | extern void sh_set_lines_and_columns __P((int, int)); |
28ef6c31 | 243 | extern void set_pwd __P((void)); |
b72432fd | 244 | extern void set_ppid __P((void)); |
bb70624e JA |
245 | extern void make_funcname_visible __P((int)); |
246 | ||
7117c2d2 | 247 | extern SHELL_VAR *var_lookup __P((const char *, VAR_CONTEXT *)); |
f73dda09 JA |
248 | |
249 | extern SHELL_VAR *find_function __P((const char *)); | |
b80f6443 | 250 | extern FUNCTION_DEF *find_function_def __P((const char *)); |
f73dda09 | 251 | extern SHELL_VAR *find_variable __P((const char *)); |
ac50fbac | 252 | extern SHELL_VAR *find_variable_noref __P((const char *)); |
a0c0a00f CR |
253 | extern SHELL_VAR *find_variable_last_nameref __P((const char *, int)); |
254 | extern SHELL_VAR *find_global_variable_last_nameref __P((const char *, int)); | |
ac50fbac | 255 | extern SHELL_VAR *find_variable_nameref __P((SHELL_VAR *)); |
a0c0a00f CR |
256 | extern SHELL_VAR *find_variable_nameref_for_create __P((const char *, int)); |
257 | extern SHELL_VAR *find_variable_nameref_for_assignment __P((const char *, int)); | |
258 | /*extern SHELL_VAR *find_variable_internal __P((const char *, int));*/ | |
ac50fbac CR |
259 | extern SHELL_VAR *find_variable_tempenv __P((const char *)); |
260 | extern SHELL_VAR *find_variable_notempenv __P((const char *)); | |
495aee44 | 261 | extern SHELL_VAR *find_global_variable __P((const char *)); |
ac50fbac CR |
262 | extern SHELL_VAR *find_global_variable_noref __P((const char *)); |
263 | extern SHELL_VAR *find_shell_variable __P((const char *)); | |
264 | extern SHELL_VAR *find_tempenv_variable __P((const char *)); | |
a0c0a00f CR |
265 | extern SHELL_VAR *find_variable_no_invisible __P((const char *)); |
266 | extern SHELL_VAR *find_variable_for_assignment __P((const char *)); | |
726f6388 | 267 | extern SHELL_VAR *copy_variable __P((SHELL_VAR *)); |
f73dda09 | 268 | extern SHELL_VAR *make_local_variable __P((const char *)); |
95732b49 | 269 | extern SHELL_VAR *bind_variable __P((const char *, char *, int)); |
ac50fbac | 270 | extern SHELL_VAR *bind_global_variable __P((const char *, char *, int)); |
f73dda09 | 271 | extern SHELL_VAR *bind_function __P((const char *, COMMAND *)); |
bb70624e | 272 | |
b80f6443 JA |
273 | extern void bind_function_def __P((const char *, FUNCTION_DEF *)); |
274 | ||
7117c2d2 JA |
275 | extern SHELL_VAR **map_over __P((sh_var_map_func_t *, VAR_CONTEXT *)); |
276 | SHELL_VAR **map_over_funcs __P((sh_var_map_func_t *)); | |
277 | ||
726f6388 JA |
278 | extern SHELL_VAR **all_shell_variables __P((void)); |
279 | extern SHELL_VAR **all_shell_functions __P((void)); | |
280 | extern SHELL_VAR **all_visible_variables __P((void)); | |
281 | extern SHELL_VAR **all_visible_functions __P((void)); | |
bb70624e | 282 | extern SHELL_VAR **all_exported_variables __P((void)); |
7117c2d2 JA |
283 | extern SHELL_VAR **local_exported_variables __P((void)); |
284 | extern SHELL_VAR **all_local_variables __P((void)); | |
bb70624e JA |
285 | #if defined (ARRAY_VARS) |
286 | extern SHELL_VAR **all_array_variables __P((void)); | |
287 | #endif | |
f73dda09 | 288 | extern char **all_variables_matching_prefix __P((const char *)); |
726f6388 JA |
289 | |
290 | extern char **make_var_array __P((HASH_TABLE *)); | |
d166f048 | 291 | extern char **add_or_supercede_exported_var __P((char *, int)); |
726f6388 | 292 | |
7117c2d2 | 293 | extern char *get_variable_value __P((SHELL_VAR *)); |
28ef6c31 | 294 | extern char *get_string_value __P((const char *)); |
7117c2d2 | 295 | extern char *sh_get_env_value __P((const char *)); |
95732b49 | 296 | extern char *make_variable_value __P((SHELL_VAR *, char *, int)); |
726f6388 | 297 | |
95732b49 | 298 | extern SHELL_VAR *bind_variable_value __P((SHELL_VAR *, char *, int)); |
bb70624e | 299 | extern SHELL_VAR *bind_int_variable __P((char *, char *)); |
7117c2d2 | 300 | extern SHELL_VAR *bind_var_to_int __P((char *, intmax_t)); |
bb70624e | 301 | |
495aee44 | 302 | extern int assign_in_env __P((WORD_DESC *, int)); |
95732b49 | 303 | |
f73dda09 | 304 | extern int unbind_variable __P((const char *)); |
a0c0a00f | 305 | extern int check_unbind_variable __P((const char *)); |
ac50fbac | 306 | extern int unbind_nameref __P((const char *)); |
a0c0a00f | 307 | extern int unbind_variable_noref __P((const char *)); |
7117c2d2 | 308 | extern int unbind_func __P((const char *)); |
b80f6443 | 309 | extern int unbind_function_def __P((const char *)); |
ac50fbac | 310 | extern int delete_var __P((const char *, VAR_CONTEXT *)); |
7117c2d2 | 311 | extern int makunbound __P((const char *, VAR_CONTEXT *)); |
f73dda09 | 312 | extern int kill_local_variable __P((const char *)); |
726f6388 | 313 | extern void delete_all_variables __P((HASH_TABLE *)); |
7117c2d2 JA |
314 | extern void delete_all_contexts __P((VAR_CONTEXT *)); |
315 | ||
316 | extern VAR_CONTEXT *new_var_context __P((char *, int)); | |
317 | extern void dispose_var_context __P((VAR_CONTEXT *)); | |
318 | extern VAR_CONTEXT *push_var_context __P((char *, int, HASH_TABLE *)); | |
319 | extern void pop_var_context __P((void)); | |
320 | extern VAR_CONTEXT *push_scope __P((int, HASH_TABLE *)); | |
321 | extern void pop_scope __P((int)); | |
322 | ||
323 | extern void push_context __P((char *, int, HASH_TABLE *)); | |
324 | extern void pop_context __P((void)); | |
325 | extern void push_dollar_vars __P((void)); | |
326 | extern void pop_dollar_vars __P((void)); | |
327 | extern void dispose_saved_dollar_vars __P((void)); | |
726f6388 | 328 | |
b80f6443 JA |
329 | extern void push_args __P((WORD_LIST *)); |
330 | extern void pop_args __P((void)); | |
331 | ||
726f6388 JA |
332 | extern void adjust_shell_level __P((int)); |
333 | extern void non_unsettable __P((char *)); | |
334 | extern void dispose_variable __P((SHELL_VAR *)); | |
ccc6cda3 | 335 | extern void dispose_used_env_vars __P((void)); |
726f6388 JA |
336 | extern void dispose_function_env __P((void)); |
337 | extern void dispose_builtin_env __P((void)); | |
ccc6cda3 | 338 | extern void merge_temporary_env __P((void)); |
a0c0a00f | 339 | extern void flush_temporary_env __P((void)); |
ccc6cda3 | 340 | extern void merge_builtin_env __P((void)); |
726f6388 | 341 | extern void kill_all_local_variables __P((void)); |
7117c2d2 | 342 | |
726f6388 | 343 | extern void set_var_read_only __P((char *)); |
f73dda09 | 344 | extern void set_func_read_only __P((const char *)); |
726f6388 | 345 | extern void set_var_auto_export __P((char *)); |
f73dda09 | 346 | extern void set_func_auto_export __P((const char *)); |
7117c2d2 | 347 | |
726f6388 | 348 | extern void sort_variables __P((SHELL_VAR **)); |
7117c2d2 | 349 | |
2bbe8058 | 350 | extern int chkexport __P((char *)); |
726f6388 | 351 | extern void maybe_make_export_env __P((void)); |
b72432fd | 352 | extern void update_export_env_inplace __P((char *, int, char *)); |
726f6388 | 353 | extern void put_command_name_into_env __P((char *)); |
7117c2d2 JA |
354 | extern void put_gnu_argv_flags_into_env __P((intmax_t, char *)); |
355 | ||
726f6388 | 356 | extern void print_var_list __P((SHELL_VAR **)); |
28ef6c31 | 357 | extern void print_func_list __P((SHELL_VAR **)); |
726f6388 | 358 | extern void print_assignment __P((SHELL_VAR *)); |
ccc6cda3 | 359 | extern void print_var_value __P((SHELL_VAR *, int)); |
726f6388 JA |
360 | extern void print_var_function __P((SHELL_VAR *)); |
361 | ||
ccc6cda3 JA |
362 | #if defined (ARRAY_VARS) |
363 | extern SHELL_VAR *make_new_array_variable __P((char *)); | |
ac50fbac | 364 | extern SHELL_VAR *make_local_array_variable __P((char *, int)); |
cce855bc | 365 | |
3185942a JA |
366 | extern SHELL_VAR *make_new_assoc_variable __P((char *)); |
367 | extern SHELL_VAR *make_local_assoc_variable __P((char *)); | |
368 | ||
7117c2d2 | 369 | extern void set_pipestatus_array __P((int *, int)); |
495aee44 CR |
370 | extern ARRAY *save_pipestatus_array __P((void)); |
371 | extern void restore_pipestatus_array __P((ARRAY *)); | |
ccc6cda3 JA |
372 | #endif |
373 | ||
cce855bc JA |
374 | extern void set_pipestatus_from_exit __P((int)); |
375 | ||
376 | /* The variable in NAME has just had its state changed. Check to see if it | |
377 | is one of the special ones where something special happens. */ | |
378 | extern void stupidly_hack_special_variables __P((char *)); | |
379 | ||
3185942a JA |
380 | /* Reinitialize some special variables that have external effects upon unset |
381 | when the shell reinitializes itself. */ | |
382 | extern void reinit_special_variables __P((void)); | |
383 | ||
28ef6c31 JA |
384 | extern int get_random_number __P((void)); |
385 | ||
cce855bc JA |
386 | /* The `special variable' functions that get called when a particular |
387 | variable is set. */ | |
7117c2d2 | 388 | extern void sv_ifs __P((char *)); |
f73dda09 JA |
389 | extern void sv_path __P((char *)); |
390 | extern void sv_mail __P((char *)); | |
495aee44 | 391 | extern void sv_funcnest __P((char *)); |
a0c0a00f | 392 | extern void sv_execignore __P((char *)); |
f73dda09 JA |
393 | extern void sv_globignore __P((char *)); |
394 | extern void sv_ignoreeof __P((char *)); | |
395 | extern void sv_strict_posix __P((char *)); | |
396 | extern void sv_optind __P((char *)); | |
397 | extern void sv_opterr __P((char *)); | |
398 | extern void sv_locale __P((char *)); | |
0001803f | 399 | extern void sv_xtracefd __P((char *)); |
ac50fbac | 400 | extern void sv_shcompat __P((char *)); |
cce855bc JA |
401 | |
402 | #if defined (READLINE) | |
b80f6443 | 403 | extern void sv_comp_wordbreaks __P((char *)); |
f73dda09 JA |
404 | extern void sv_terminal __P((char *)); |
405 | extern void sv_hostfile __P((char *)); | |
95732b49 | 406 | extern void sv_winsize __P((char *)); |
cce855bc JA |
407 | #endif |
408 | ||
95732b49 JA |
409 | #if defined (__CYGWIN__) |
410 | extern void sv_home __P((char *)); | |
cce855bc JA |
411 | #endif |
412 | ||
413 | #if defined (HISTORY) | |
f73dda09 JA |
414 | extern void sv_histsize __P((char *)); |
415 | extern void sv_histignore __P((char *)); | |
416 | extern void sv_history_control __P((char *)); | |
cce855bc | 417 | # if defined (BANG_HISTORY) |
f73dda09 | 418 | extern void sv_histchars __P((char *)); |
cce855bc | 419 | # endif |
b80f6443 | 420 | extern void sv_histtimefmt __P((char *)); |
cce855bc JA |
421 | #endif /* HISTORY */ |
422 | ||
ac50fbac | 423 | #if defined (HAVE_TZSET) |
95732b49 JA |
424 | extern void sv_tz __P((char *)); |
425 | #endif | |
426 | ||
ac50fbac CR |
427 | #if defined (JOB_CONTROL) |
428 | extern void sv_childmax __P((char *)); | |
429 | #endif | |
430 | ||
726f6388 | 431 | #endif /* !_VARIABLES_H_ */ |