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scripts/kconfig/symbol.c
27.1 KB
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/* * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> * Released under the terms of the GNU GPL v2.0. */ #include <ctype.h> #include <stdlib.h> #include <string.h> #include <regex.h> #include <sys/utsname.h> |
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#include "lkc.h" struct symbol symbol_yes = { .name = "y", .curr = { "y", yes }, |
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.flags = SYMBOL_CONST|SYMBOL_VALID, |
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}, symbol_mod = { .name = "m", .curr = { "m", mod }, |
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.flags = SYMBOL_CONST|SYMBOL_VALID, |
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}, symbol_no = { .name = "n", .curr = { "n", no }, |
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.flags = SYMBOL_CONST|SYMBOL_VALID, |
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}, symbol_empty = { .name = "", .curr = { "", no }, .flags = SYMBOL_VALID, }; |
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struct symbol *sym_defconfig_list; |
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struct symbol *modules_sym; tristate modules_val; |
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struct expr *sym_env_list; |
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static void sym_add_default(struct symbol *sym, const char *def) |
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{ struct property *prop = prop_alloc(P_DEFAULT, sym); |
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prop->expr = expr_alloc_symbol(sym_lookup(def, SYMBOL_CONST)); |
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} void sym_init(void) { struct symbol *sym; struct utsname uts; |
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static bool inited = false; if (inited) return; inited = true; uname(&uts); |
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sym = sym_lookup("UNAME_RELEASE", 0); sym->type = S_STRING; sym->flags |= SYMBOL_AUTO; sym_add_default(sym, uts.release); } enum symbol_type sym_get_type(struct symbol *sym) { enum symbol_type type = sym->type; if (type == S_TRISTATE) { if (sym_is_choice_value(sym) && sym->visible == yes) type = S_BOOLEAN; else if (modules_val == no) type = S_BOOLEAN; } return type; } const char *sym_type_name(enum symbol_type type) { switch (type) { case S_BOOLEAN: return "boolean"; case S_TRISTATE: return "tristate"; case S_INT: return "integer"; case S_HEX: return "hex"; case S_STRING: return "string"; case S_UNKNOWN: return "unknown"; case S_OTHER: break; } return "???"; } struct property *sym_get_choice_prop(struct symbol *sym) { struct property *prop; for_all_choices(sym, prop) return prop; return NULL; } |
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struct property *sym_get_env_prop(struct symbol *sym) { struct property *prop; for_all_properties(sym, prop, P_ENV) return prop; return NULL; } |
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struct property *sym_get_default_prop(struct symbol *sym) { struct property *prop; for_all_defaults(sym, prop) { prop->visible.tri = expr_calc_value(prop->visible.expr); if (prop->visible.tri != no) return prop; } return NULL; } |
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static struct property *sym_get_range_prop(struct symbol *sym) |
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{ struct property *prop; for_all_properties(sym, prop, P_RANGE) { prop->visible.tri = expr_calc_value(prop->visible.expr); if (prop->visible.tri != no) return prop; } return NULL; } |
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static int sym_get_range_val(struct symbol *sym, int base) { sym_calc_value(sym); switch (sym->type) { case S_INT: base = 10; break; case S_HEX: base = 16; break; default: break; } return strtol(sym->curr.val, NULL, base); } static void sym_validate_range(struct symbol *sym) { struct property *prop; int base, val, val2; char str[64]; switch (sym->type) { case S_INT: base = 10; break; case S_HEX: base = 16; break; default: return; } prop = sym_get_range_prop(sym); if (!prop) return; val = strtol(sym->curr.val, NULL, base); val2 = sym_get_range_val(prop->expr->left.sym, base); if (val >= val2) { val2 = sym_get_range_val(prop->expr->right.sym, base); if (val <= val2) return; } if (sym->type == S_INT) sprintf(str, "%d", val2); else sprintf(str, "0x%x", val2); sym->curr.val = strdup(str); } |
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static void sym_calc_visibility(struct symbol *sym) { struct property *prop; tristate tri; /* any prompt visible? */ tri = no; for_all_prompts(sym, prop) { prop->visible.tri = expr_calc_value(prop->visible.expr); |
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tri = EXPR_OR(tri, prop->visible.tri); |
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} if (tri == mod && (sym->type != S_TRISTATE || modules_val == no)) tri = yes; if (sym->visible != tri) { sym->visible = tri; sym_set_changed(sym); } if (sym_is_choice_value(sym)) return; |
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/* defaulting to "yes" if no explicit "depends on" are given */ tri = yes; if (sym->dir_dep.expr) tri = expr_calc_value(sym->dir_dep.expr); if (tri == mod) tri = yes; if (sym->dir_dep.tri != tri) { sym->dir_dep.tri = tri; sym_set_changed(sym); } |
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tri = no; if (sym->rev_dep.expr) tri = expr_calc_value(sym->rev_dep.expr); if (tri == mod && sym_get_type(sym) == S_BOOLEAN) tri = yes; if (sym->rev_dep.tri != tri) { sym->rev_dep.tri = tri; sym_set_changed(sym); } } |
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/* * Find the default symbol for a choice. * First try the default values for the choice symbol * Next locate the first visible choice value * Return NULL if none was found */ struct symbol *sym_choice_default(struct symbol *sym) |
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{ struct symbol *def_sym; struct property *prop; struct expr *e; |
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/* any of the defaults visible? */ for_all_defaults(sym, prop) { prop->visible.tri = expr_calc_value(prop->visible.expr); if (prop->visible.tri == no) continue; def_sym = prop_get_symbol(prop); |
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if (def_sym->visible != no) return def_sym; } /* just get the first visible value */ prop = sym_get_choice_prop(sym); |
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expr_list_for_each_sym(prop->expr, e, def_sym) |
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if (def_sym->visible != no) return def_sym; |
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|
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/* failed to locate any defaults */ |
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return NULL; } |
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static struct symbol *sym_calc_choice(struct symbol *sym) { struct symbol *def_sym; struct property *prop; struct expr *e; /* first calculate all choice values' visibilities */ prop = sym_get_choice_prop(sym); expr_list_for_each_sym(prop->expr, e, def_sym) sym_calc_visibility(def_sym); /* is the user choice visible? */ def_sym = sym->def[S_DEF_USER].val; if (def_sym && def_sym->visible != no) return def_sym; def_sym = sym_choice_default(sym); if (def_sym == NULL) /* no choice? reset tristate value */ sym->curr.tri = no; return def_sym; } |
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void sym_calc_value(struct symbol *sym) { struct symbol_value newval, oldval; struct property *prop; struct expr *e; if (!sym) return; if (sym->flags & SYMBOL_VALID) return; sym->flags |= SYMBOL_VALID; oldval = sym->curr; switch (sym->type) { case S_INT: case S_HEX: case S_STRING: newval = symbol_empty.curr; break; case S_BOOLEAN: case S_TRISTATE: newval = symbol_no.curr; break; default: sym->curr.val = sym->name; sym->curr.tri = no; return; } if (!sym_is_choice_value(sym)) sym->flags &= ~SYMBOL_WRITE; sym_calc_visibility(sym); /* set default if recursively called */ sym->curr = newval; switch (sym_get_type(sym)) { case S_BOOLEAN: case S_TRISTATE: if (sym_is_choice_value(sym) && sym->visible == yes) { prop = sym_get_choice_prop(sym); newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no; |
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} else { if (sym->visible != no) { /* if the symbol is visible use the user value * if available, otherwise try the default value */ sym->flags |= SYMBOL_WRITE; if (sym_has_value(sym)) { newval.tri = EXPR_AND(sym->def[S_DEF_USER].tri, sym->visible); goto calc_newval; } |
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} |
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if (sym->rev_dep.tri != no) |
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sym->flags |= SYMBOL_WRITE; |
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if (!sym_is_choice(sym)) { prop = sym_get_default_prop(sym); if (prop) { sym->flags |= SYMBOL_WRITE; newval.tri = EXPR_AND(expr_calc_value(prop->expr), prop->visible.tri); } |
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} |
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calc_newval: |
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if (sym->dir_dep.tri == no && sym->rev_dep.tri != no) { |
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struct expr *e; e = expr_simplify_unmet_dep(sym->rev_dep.expr, sym->dir_dep.expr); |
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fprintf(stderr, "warning: ("); |
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expr_fprint(e, stderr); |
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fprintf(stderr, ") selects %s which has unmet direct dependencies (", sym->name); expr_fprint(sym->dir_dep.expr, stderr); fprintf(stderr, ") "); |
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expr_free(e); |
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} |
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newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri); |
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} if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN) newval.tri = yes; break; case S_STRING: case S_HEX: case S_INT: if (sym->visible != no) { sym->flags |= SYMBOL_WRITE; if (sym_has_value(sym)) { |
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newval.val = sym->def[S_DEF_USER].val; |
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break; } } prop = sym_get_default_prop(sym); if (prop) { struct symbol *ds = prop_get_symbol(prop); if (ds) { sym->flags |= SYMBOL_WRITE; sym_calc_value(ds); newval.val = ds->curr.val; } } break; default: ; } sym->curr = newval; if (sym_is_choice(sym) && newval.tri == yes) sym->curr.val = sym_calc_choice(sym); |
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sym_validate_range(sym); |
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if (memcmp(&oldval, &sym->curr, sizeof(oldval))) { |
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sym_set_changed(sym); |
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if (modules_sym == sym) { sym_set_all_changed(); modules_val = modules_sym->curr.tri; } } |
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if (sym_is_choice(sym)) { |
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struct symbol *choice_sym; |
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|
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prop = sym_get_choice_prop(sym); |
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expr_list_for_each_sym(prop->expr, e, choice_sym) { |
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if ((sym->flags & SYMBOL_WRITE) && choice_sym->visible != no) choice_sym->flags |= SYMBOL_WRITE; if (sym->flags & SYMBOL_CHANGED) |
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sym_set_changed(choice_sym); |
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} } |
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if (sym->flags & SYMBOL_AUTO) sym->flags &= ~SYMBOL_WRITE; |
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} void sym_clear_all_valid(void) { struct symbol *sym; int i; for_all_symbols(i, sym) sym->flags &= ~SYMBOL_VALID; |
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sym_add_change_count(1); |
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if (modules_sym) sym_calc_value(modules_sym); } void sym_set_changed(struct symbol *sym) { struct property *prop; sym->flags |= SYMBOL_CHANGED; for (prop = sym->prop; prop; prop = prop->next) { if (prop->menu) prop->menu->flags |= MENU_CHANGED; } } void sym_set_all_changed(void) { struct symbol *sym; int i; for_all_symbols(i, sym) sym_set_changed(sym); } bool sym_tristate_within_range(struct symbol *sym, tristate val) { int type = sym_get_type(sym); if (sym->visible == no) return false; if (type != S_BOOLEAN && type != S_TRISTATE) return false; if (type == S_BOOLEAN && val == mod) return false; if (sym->visible <= sym->rev_dep.tri) return false; if (sym_is_choice_value(sym) && sym->visible == yes) return val == yes; return val >= sym->rev_dep.tri && val <= sym->visible; } bool sym_set_tristate_value(struct symbol *sym, tristate val) { tristate oldval = sym_get_tristate_value(sym); if (oldval != val && !sym_tristate_within_range(sym, val)) return false; |
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if (!(sym->flags & SYMBOL_DEF_USER)) { sym->flags |= SYMBOL_DEF_USER; |
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sym_set_changed(sym); } |
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/* * setting a choice value also resets the new flag of the choice * symbol and all other choice values. */ |
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if (sym_is_choice_value(sym) && val == yes) { struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); |
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struct property *prop; struct expr *e; |
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cs->def[S_DEF_USER].val = sym; |
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cs->flags |= SYMBOL_DEF_USER; |
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prop = sym_get_choice_prop(cs); for (e = prop->expr; e; e = e->left.expr) { if (e->right.sym->visible != no) |
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e->right.sym->flags |= SYMBOL_DEF_USER; |
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} |
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} |
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sym->def[S_DEF_USER].tri = val; |
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if (oldval != val) |
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sym_clear_all_valid(); |
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return true; } tristate sym_toggle_tristate_value(struct symbol *sym) { tristate oldval, newval; oldval = newval = sym_get_tristate_value(sym); do { switch (newval) { case no: newval = mod; break; case mod: newval = yes; break; case yes: newval = no; break; } if (sym_set_tristate_value(sym, newval)) break; } while (oldval != newval); return newval; } bool sym_string_valid(struct symbol *sym, const char *str) { signed char ch; switch (sym->type) { case S_STRING: return true; case S_INT: ch = *str++; if (ch == '-') ch = *str++; if (!isdigit(ch)) return false; if (ch == '0' && *str != 0) return false; while ((ch = *str++)) { if (!isdigit(ch)) return false; } return true; case S_HEX: if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) str += 2; ch = *str++; do { if (!isxdigit(ch)) return false; } while ((ch = *str++)); return true; case S_BOOLEAN: case S_TRISTATE: switch (str[0]) { case 'y': case 'Y': case 'm': case 'M': case 'n': case 'N': return true; } return false; default: return false; } } bool sym_string_within_range(struct symbol *sym, const char *str) { struct property *prop; int val; switch (sym->type) { case S_STRING: return sym_string_valid(sym, str); case S_INT: if (!sym_string_valid(sym, str)) return false; prop = sym_get_range_prop(sym); if (!prop) return true; val = strtol(str, NULL, 10); |
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return val >= sym_get_range_val(prop->expr->left.sym, 10) && val <= sym_get_range_val(prop->expr->right.sym, 10); |
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case S_HEX: if (!sym_string_valid(sym, str)) return false; prop = sym_get_range_prop(sym); if (!prop) return true; val = strtol(str, NULL, 16); |
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return val >= sym_get_range_val(prop->expr->left.sym, 16) && val <= sym_get_range_val(prop->expr->right.sym, 16); |
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case S_BOOLEAN: case S_TRISTATE: switch (str[0]) { case 'y': case 'Y': return sym_tristate_within_range(sym, yes); case 'm': case 'M': return sym_tristate_within_range(sym, mod); case 'n': case 'N': return sym_tristate_within_range(sym, no); } return false; default: return false; } } bool sym_set_string_value(struct symbol *sym, const char *newval) { const char *oldval; char *val; int size; switch (sym->type) { case S_BOOLEAN: case S_TRISTATE: switch (newval[0]) { case 'y': case 'Y': return sym_set_tristate_value(sym, yes); case 'm': case 'M': return sym_set_tristate_value(sym, mod); case 'n': case 'N': return sym_set_tristate_value(sym, no); } return false; default: ; } if (!sym_string_within_range(sym, newval)) return false; |
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if (!(sym->flags & SYMBOL_DEF_USER)) { sym->flags |= SYMBOL_DEF_USER; |
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sym_set_changed(sym); } |
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oldval = sym->def[S_DEF_USER].val; |
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size = strlen(newval) + 1; if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) { size += 2; |
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sym->def[S_DEF_USER].val = val = malloc(size); |
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*val++ = '0'; *val++ = 'x'; } else if (!oldval || strcmp(oldval, newval)) |
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sym->def[S_DEF_USER].val = val = malloc(size); |
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else return true; strcpy(val, newval); free((void *)oldval); sym_clear_all_valid(); return true; } |
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/* * Find the default value associated to a symbol. * For tristate symbol handle the modules=n case * in which case "m" becomes "y". * If the symbol does not have any default then fallback * to the fixed default values. */ const char *sym_get_string_default(struct symbol *sym) { struct property *prop; struct symbol *ds; const char *str; tristate val; sym_calc_visibility(sym); sym_calc_value(modules_sym); val = symbol_no.curr.tri; str = symbol_empty.curr.val; /* If symbol has a default value look it up */ prop = sym_get_default_prop(sym); if (prop != NULL) { switch (sym->type) { case S_BOOLEAN: case S_TRISTATE: |
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/* The visibility may limit the value from yes => mod */ |
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val = EXPR_AND(expr_calc_value(prop->expr), prop->visible.tri); break; default: /* * The following fails to handle the situation * where a default value is further limited by * the valid range. */ ds = prop_get_symbol(prop); if (ds != NULL) { sym_calc_value(ds); str = (const char *)ds->curr.val; } } } /* Handle select statements */ val = EXPR_OR(val, sym->rev_dep.tri); /* transpose mod to yes if modules are not enabled */ if (val == mod) if (!sym_is_choice_value(sym) && modules_sym->curr.tri == no) val = yes; /* transpose mod to yes if type is bool */ if (sym->type == S_BOOLEAN && val == mod) val = yes; switch (sym->type) { case S_BOOLEAN: case S_TRISTATE: switch (val) { case no: return "n"; case mod: return "m"; case yes: return "y"; } case S_INT: case S_HEX: return str; case S_STRING: return str; case S_OTHER: case S_UNKNOWN: break; } return ""; } |
1da177e4c Linux-2.6.12-rc2 |
721 722 723 724 725 726 727 728 729 730 731 732 |
const char *sym_get_string_value(struct symbol *sym) { tristate val; switch (sym->type) { case S_BOOLEAN: case S_TRISTATE: val = sym_get_tristate_value(sym); switch (val) { case no: return "n"; case mod: |
e54e692ba kconfig: introduc... |
733 734 |
sym_calc_value(modules_sym); return (modules_sym->curr.tri == no) ? "n" : "m"; |
1da177e4c Linux-2.6.12-rc2 |
735 736 737 738 739 740 741 742 743 744 745 746 747 748 |
case yes: return "y"; } break; default: ; } return (const char *)sym->curr.val; } bool sym_is_changable(struct symbol *sym) { return sym->visible > sym->rev_dep.tri; } |
e66f25d7d Improve kconfig s... |
749 750 751 752 753 754 755 756 |
static unsigned strhash(const char *s) { /* fnv32 hash */ unsigned hash = 2166136261U; for (; *s; s++) hash = (hash ^ *s) * 0x01000193; return hash; } |
5a1aa8a1a kconfig: add name... |
757 |
struct symbol *sym_lookup(const char *name, int flags) |
1da177e4c Linux-2.6.12-rc2 |
758 759 |
{ struct symbol *symbol; |
1da177e4c Linux-2.6.12-rc2 |
760 |
char *new_name; |
e66f25d7d Improve kconfig s... |
761 |
int hash; |
1da177e4c Linux-2.6.12-rc2 |
762 763 764 765 766 767 768 769 770 |
if (name) { if (name[0] && !name[1]) { switch (name[0]) { case 'y': return &symbol_yes; case 'm': return &symbol_mod; case 'n': return &symbol_no; } } |
e66f25d7d Improve kconfig s... |
771 |
hash = strhash(name) % SYMBOL_HASHSIZE; |
1da177e4c Linux-2.6.12-rc2 |
772 773 |
for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) { |
e66f25d7d Improve kconfig s... |
774 775 |
if (symbol->name && !strcmp(symbol->name, name) && |
5a1aa8a1a kconfig: add name... |
776 777 778 |
(flags ? symbol->flags & flags : !(symbol->flags & (SYMBOL_CONST|SYMBOL_CHOICE)))) return symbol; |
1da177e4c Linux-2.6.12-rc2 |
779 780 781 782 |
} new_name = strdup(name); } else { new_name = NULL; |
e66f25d7d Improve kconfig s... |
783 |
hash = 0; |
1da177e4c Linux-2.6.12-rc2 |
784 785 786 787 788 789 |
} symbol = malloc(sizeof(*symbol)); memset(symbol, 0, sizeof(*symbol)); symbol->name = new_name; symbol->type = S_UNKNOWN; |
5a1aa8a1a kconfig: add name... |
790 |
symbol->flags |= flags; |
1da177e4c Linux-2.6.12-rc2 |
791 792 793 794 795 796 797 798 799 800 |
symbol->next = symbol_hash[hash]; symbol_hash[hash] = symbol; return symbol; } struct symbol *sym_find(const char *name) { struct symbol *symbol = NULL; |
1da177e4c Linux-2.6.12-rc2 |
801 802 803 804 805 806 807 808 809 810 811 812 |
int hash = 0; if (!name) return NULL; if (name[0] && !name[1]) { switch (name[0]) { case 'y': return &symbol_yes; case 'm': return &symbol_mod; case 'n': return &symbol_no; } } |
e66f25d7d Improve kconfig s... |
813 |
hash = strhash(name) % SYMBOL_HASHSIZE; |
1da177e4c Linux-2.6.12-rc2 |
814 815 |
for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) { |
e66f25d7d Improve kconfig s... |
816 817 |
if (symbol->name && !strcmp(symbol->name, name) && |
1da177e4c Linux-2.6.12-rc2 |
818 819 820 821 822 823 |
!(symbol->flags & SYMBOL_CONST)) break; } return symbol; } |
76a540958 kconfig: add a sy... |
824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 |
/* * Expand symbol's names embedded in the string given in argument. Symbols' * name to be expanded shall be prefixed by a '$'. Unknown symbol expands to * the empty string. */ const char *sym_expand_string_value(const char *in) { const char *src; char *res; size_t reslen; reslen = strlen(in) + 1; res = malloc(reslen); res[0] = '\0'; while ((src = strchr(in, '$'))) { char *p, name[SYMBOL_MAXLENGTH]; const char *symval = ""; struct symbol *sym; size_t newlen; strncat(res, in, src - in); src++; p = name; while (isalnum(*src) || *src == '_') *p++ = *src++; *p = '\0'; sym = sym_find(name); if (sym != NULL) { sym_calc_value(sym); symval = sym_get_string_value(sym); } |
020e773f6 kconfig: sym_expa... |
858 |
newlen = strlen(res) + strlen(symval) + strlen(src) + 1; |
76a540958 kconfig: add a sy... |
859 860 |
if (newlen > reslen) { reslen = newlen; |
19c29f326 kconfig: Fix real... |
861 |
res = realloc(res, reslen); |
76a540958 kconfig: add a sy... |
862 863 864 865 866 867 868 869 870 |
} strcat(res, symval); in = src; } strcat(res, in); return res; } |
e54e692ba kconfig: introduc... |
871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 |
const char *sym_escape_string_value(const char *in) { const char *p; size_t reslen; char *res; size_t l; reslen = strlen(in) + strlen("\"\"") + 1; p = in; for (;;) { l = strcspn(p, "\"\\"); p += l; if (p[0] == '\0') break; reslen++; p++; } res = malloc(reslen); res[0] = '\0'; strcat(res, "\""); p = in; for (;;) { l = strcspn(p, "\"\\"); strncat(res, p, l); p += l; if (p[0] == '\0') break; strcat(res, "\\"); strncat(res, p++, 1); } strcat(res, "\""); return res; } |
1da177e4c Linux-2.6.12-rc2 |
913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 |
struct symbol **sym_re_search(const char *pattern) { struct symbol *sym, **sym_arr = NULL; int i, cnt, size; regex_t re; cnt = size = 0; /* Skip if empty */ if (strlen(pattern) == 0) return NULL; if (regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB|REG_ICASE)) return NULL; for_all_symbols(i, sym) { if (sym->flags & SYMBOL_CONST || !sym->name) continue; if (regexec(&re, sym->name, 0, NULL, 0)) continue; if (cnt + 1 >= size) { void *tmp = sym_arr; size += 16; sym_arr = realloc(sym_arr, size * sizeof(struct symbol *)); if (!sym_arr) { free(tmp); return NULL; } } |
da6df879b kconfig: recalc s... |
940 |
sym_calc_value(sym); |
1da177e4c Linux-2.6.12-rc2 |
941 942 943 944 945 946 947 948 |
sym_arr[cnt++] = sym; } if (sym_arr) sym_arr[cnt] = NULL; regfree(&re); return sym_arr; } |
d595cea62 kconfig: print mo... |
949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 |
/* * When we check for recursive dependencies we use a stack to save * current state so we can print out relevant info to user. * The entries are located on the call stack so no need to free memory. * Note inser() remove() must always match to properly clear the stack. */ static struct dep_stack { struct dep_stack *prev, *next; struct symbol *sym; struct property *prop; struct expr *expr; } *check_top; static void dep_stack_insert(struct dep_stack *stack, struct symbol *sym) { memset(stack, 0, sizeof(*stack)); if (check_top) check_top->next = stack; stack->prev = check_top; stack->sym = sym; check_top = stack; } static void dep_stack_remove(void) { check_top = check_top->prev; if (check_top) check_top->next = NULL; } /* * Called when we have detected a recursive dependency. * check_top point to the top of the stact so we use * the ->prev pointer to locate the bottom of the stack. */ static void sym_check_print_recursive(struct symbol *last_sym) { struct dep_stack *stack; struct symbol *sym, *next_sym; struct menu *menu = NULL; struct property *prop; struct dep_stack cv_stack; if (sym_is_choice_value(last_sym)) { dep_stack_insert(&cv_stack, last_sym); last_sym = prop_get_symbol(sym_get_choice_prop(last_sym)); } for (stack = check_top; stack != NULL; stack = stack->prev) if (stack->sym == last_sym) break; if (!stack) { fprintf(stderr, "unexpected recursive dependency error "); return; } for (; stack; stack = stack->next) { sym = stack->sym; next_sym = stack->next ? stack->next->sym : last_sym; prop = stack->prop; |
3643f849d kconfig: fix segf... |
1010 1011 |
if (prop == NULL) prop = stack->sym->prop; |
d595cea62 kconfig: print mo... |
1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 |
/* for choice values find the menu entry (used below) */ if (sym_is_choice(sym) || sym_is_choice_value(sym)) { for (prop = sym->prop; prop; prop = prop->next) { menu = prop->menu; if (prop->menu) break; } } if (stack->sym == last_sym) fprintf(stderr, "%s:%d:error: recursive dependency detected! ", prop->file->name, prop->lineno); if (stack->expr) { fprintf(stderr, "%s:%d:\tsymbol %s %s value contains %s ", prop->file->name, prop->lineno, sym->name ? sym->name : "<choice>", prop_get_type_name(prop->type), next_sym->name ? next_sym->name : "<choice>"); } else if (stack->prop) { fprintf(stderr, "%s:%d:\tsymbol %s depends on %s ", prop->file->name, prop->lineno, sym->name ? sym->name : "<choice>", next_sym->name ? next_sym->name : "<choice>"); } else if (sym_is_choice(sym)) { fprintf(stderr, "%s:%d:\tchoice %s contains symbol %s ", menu->file->name, menu->lineno, sym->name ? sym->name : "<choice>", next_sym->name ? next_sym->name : "<choice>"); } else if (sym_is_choice_value(sym)) { fprintf(stderr, "%s:%d:\tsymbol %s is part of choice %s ", menu->file->name, menu->lineno, sym->name ? sym->name : "<choice>", next_sym->name ? next_sym->name : "<choice>"); } else { fprintf(stderr, "%s:%d:\tsymbol %s is selected by %s ", prop->file->name, prop->lineno, sym->name ? sym->name : "<choice>", next_sym->name ? next_sym->name : "<choice>"); } } if (check_top == &cv_stack) dep_stack_remove(); } |
1da177e4c Linux-2.6.12-rc2 |
1062 |
|
1da177e4c Linux-2.6.12-rc2 |
1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 |
static struct symbol *sym_check_expr_deps(struct expr *e) { struct symbol *sym; if (!e) return NULL; switch (e->type) { case E_OR: case E_AND: sym = sym_check_expr_deps(e->left.expr); if (sym) return sym; return sym_check_expr_deps(e->right.expr); case E_NOT: return sym_check_expr_deps(e->left.expr); case E_EQUAL: case E_UNEQUAL: sym = sym_check_deps(e->left.sym); if (sym) return sym; return sym_check_deps(e->right.sym); case E_SYMBOL: return sym_check_deps(e->left.sym); default: break; } printf("Oops! How to check %d? ", e->type); return NULL; } |
5447d34b0 kconfig: error ou... |
1093 |
/* return NULL when dependencies are OK */ |
489811788 kconfig: fix choi... |
1094 |
static struct symbol *sym_check_sym_deps(struct symbol *sym) |
1da177e4c Linux-2.6.12-rc2 |
1095 1096 1097 |
{ struct symbol *sym2; struct property *prop; |
d595cea62 kconfig: print mo... |
1098 1099 1100 |
struct dep_stack stack; dep_stack_insert(&stack, sym); |
1da177e4c Linux-2.6.12-rc2 |
1101 |
|
1da177e4c Linux-2.6.12-rc2 |
1102 1103 |
sym2 = sym_check_expr_deps(sym->rev_dep.expr); if (sym2) |
d595cea62 kconfig: print mo... |
1104 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1105 1106 1107 1108 |
for (prop = sym->prop; prop; prop = prop->next) { if (prop->type == P_CHOICE || prop->type == P_SELECT) continue; |
d595cea62 kconfig: print mo... |
1109 |
stack.prop = prop; |
1da177e4c Linux-2.6.12-rc2 |
1110 1111 |
sym2 = sym_check_expr_deps(prop->visible.expr); if (sym2) |
489811788 kconfig: fix choi... |
1112 |
break; |
1da177e4c Linux-2.6.12-rc2 |
1113 1114 |
if (prop->type != P_DEFAULT || sym_is_choice(sym)) continue; |
d595cea62 kconfig: print mo... |
1115 |
stack.expr = prop->expr; |
1da177e4c Linux-2.6.12-rc2 |
1116 1117 |
sym2 = sym_check_expr_deps(prop->expr); if (sym2) |
489811788 kconfig: fix choi... |
1118 |
break; |
d595cea62 kconfig: print mo... |
1119 |
stack.expr = NULL; |
1da177e4c Linux-2.6.12-rc2 |
1120 |
} |
489811788 kconfig: fix choi... |
1121 |
|
d595cea62 kconfig: print mo... |
1122 1123 |
out: dep_stack_remove(); |
489811788 kconfig: fix choi... |
1124 1125 1126 1127 1128 1129 1130 1131 |
return sym2; } static struct symbol *sym_check_choice_deps(struct symbol *choice) { struct symbol *sym, *sym2; struct property *prop; struct expr *e; |
d595cea62 kconfig: print mo... |
1132 1133 1134 |
struct dep_stack stack; dep_stack_insert(&stack, choice); |
489811788 kconfig: fix choi... |
1135 1136 1137 1138 1139 1140 1141 1142 |
prop = sym_get_choice_prop(choice); expr_list_for_each_sym(prop->expr, e, sym) sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); choice->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); sym2 = sym_check_sym_deps(choice); choice->flags &= ~SYMBOL_CHECK; |
5447d34b0 kconfig: error ou... |
1143 |
if (sym2) |
489811788 kconfig: fix choi... |
1144 1145 1146 1147 |
goto out; expr_list_for_each_sym(prop->expr, e, sym) { sym2 = sym_check_sym_deps(sym); |
d595cea62 kconfig: print mo... |
1148 |
if (sym2) |
489811788 kconfig: fix choi... |
1149 |
break; |
489811788 kconfig: fix choi... |
1150 1151 1152 1153 1154 1155 1156 1157 |
} out: expr_list_for_each_sym(prop->expr, e, sym) sym->flags &= ~SYMBOL_CHECK; if (sym2 && sym_is_choice_value(sym2) && prop_get_symbol(sym_get_choice_prop(sym2)) == choice) sym2 = choice; |
d595cea62 kconfig: print mo... |
1158 |
dep_stack_remove(); |
489811788 kconfig: fix choi... |
1159 1160 1161 1162 1163 1164 1165 1166 1167 |
return sym2; } struct symbol *sym_check_deps(struct symbol *sym) { struct symbol *sym2; struct property *prop; if (sym->flags & SYMBOL_CHECK) { |
d595cea62 kconfig: print mo... |
1168 |
sym_check_print_recursive(sym); |
489811788 kconfig: fix choi... |
1169 1170 1171 1172 1173 1174 |
return sym; } if (sym->flags & SYMBOL_CHECKED) return NULL; if (sym_is_choice_value(sym)) { |
d595cea62 kconfig: print mo... |
1175 |
struct dep_stack stack; |
489811788 kconfig: fix choi... |
1176 |
/* for choice groups start the check with main choice symbol */ |
d595cea62 kconfig: print mo... |
1177 |
dep_stack_insert(&stack, sym); |
489811788 kconfig: fix choi... |
1178 1179 |
prop = sym_get_choice_prop(sym); sym2 = sym_check_deps(prop_get_symbol(prop)); |
d595cea62 kconfig: print mo... |
1180 |
dep_stack_remove(); |
489811788 kconfig: fix choi... |
1181 1182 1183 1184 1185 1186 1187 |
} else if (sym_is_choice(sym)) { sym2 = sym_check_choice_deps(sym); } else { sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); sym2 = sym_check_sym_deps(sym); sym->flags &= ~SYMBOL_CHECK; } |
d595cea62 kconfig: print mo... |
1188 1189 |
if (sym2 && sym2 == sym) sym2 = NULL; |
489811788 kconfig: fix choi... |
1190 |
|
1da177e4c Linux-2.6.12-rc2 |
1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 |
return sym2; } struct property *prop_alloc(enum prop_type type, struct symbol *sym) { struct property *prop; struct property **propp; prop = malloc(sizeof(*prop)); memset(prop, 0, sizeof(*prop)); prop->type = type; prop->sym = sym; prop->file = current_file; prop->lineno = zconf_lineno(); /* append property to the prop list of symbol */ if (sym) { for (propp = &sym->prop; *propp; propp = &(*propp)->next) ; *propp = prop; } return prop; } struct symbol *prop_get_symbol(struct property *prop) { if (prop->expr && (prop->expr->type == E_SYMBOL || |
7a9629233 kconfig: explicit... |
1219 |
prop->expr->type == E_LIST)) |
1da177e4c Linux-2.6.12-rc2 |
1220 1221 1222 1223 1224 1225 1226 1227 1228 |
return prop->expr->left.sym; return NULL; } const char *prop_get_type_name(enum prop_type type) { switch (type) { case P_PROMPT: return "prompt"; |
93449082e kconfig: environm... |
1229 1230 |
case P_ENV: return "env"; |
1da177e4c Linux-2.6.12-rc2 |
1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 |
case P_COMMENT: return "comment"; case P_MENU: return "menu"; case P_DEFAULT: return "default"; case P_CHOICE: return "choice"; case P_SELECT: return "select"; case P_RANGE: return "range"; |
59e89e3dd kconfig: save loc... |
1243 1244 |
case P_SYMBOL: return "symbol"; |
1da177e4c Linux-2.6.12-rc2 |
1245 1246 1247 1248 1249 |
case P_UNKNOWN: break; } return "unknown"; } |
93449082e kconfig: environm... |
1250 |
|
4356f4890 kbuild: add stati... |
1251 |
static void prop_add_env(const char *env) |
93449082e kconfig: environm... |
1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 |
{ struct symbol *sym, *sym2; struct property *prop; char *p; sym = current_entry->sym; sym->flags |= SYMBOL_AUTO; for_all_properties(sym, prop, P_ENV) { sym2 = prop_get_symbol(prop); if (strcmp(sym2->name, env)) menu_warn(current_entry, "redefining environment symbol from %s", sym2->name); return; } prop = prop_alloc(P_ENV, sym); |
5a1aa8a1a kconfig: add name... |
1268 |
prop->expr = expr_alloc_symbol(sym_lookup(env, SYMBOL_CONST)); |
93449082e kconfig: environm... |
1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 |
sym_env_list = expr_alloc_one(E_LIST, sym_env_list); sym_env_list->right.sym = sym; p = getenv(env); if (p) sym_add_default(sym, p); else menu_warn(current_entry, "environment variable %s undefined", env); } |