/* * Copyright (C) 2002 Roman Zippel * Released under the terms of the GNU GPL v2.0. */ #include #include #include #include #include #include #include #define LKC_DIRECT_LINK #include "lkc.h" static void conf_warning(const char *fmt, ...) __attribute__ ((format (printf, 1, 2))); static const char *conf_filename; static int conf_lineno, conf_warnings, conf_unsaved; const char conf_def_filename[] = ".config"; const char conf_defname[] = "arch/$ARCH/defconfig"; const char *conf_confnames[] = { ".config", "/lib/modules/$UNAME_RELEASE/.config", "/etc/kernel-config", "/boot/config-$UNAME_RELEASE", conf_defname, NULL, }; static void conf_warning(const char *fmt, ...) { va_list ap; va_start(ap, fmt); fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno); vfprintf(stderr, fmt, ap); fprintf(stderr, "\n"); va_end(ap); conf_warnings++; } static char *conf_expand_value(const char *in) { struct symbol *sym; const char *src; static char res_value[SYMBOL_MAXLENGTH]; char *dst, name[SYMBOL_MAXLENGTH]; res_value[0] = 0; dst = name; while ((src = strchr(in, '$'))) { strncat(res_value, in, src - in); src++; dst = name; while (isalnum(*src) || *src == '_') *dst++ = *src++; *dst = 0; sym = sym_lookup(name, 0); sym_calc_value(sym); strcat(res_value, sym_get_string_value(sym)); in = src; } strcat(res_value, in); return res_value; } char *conf_get_default_confname(void) { struct stat buf; static char fullname[PATH_MAX+1]; char *env, *name; name = conf_expand_value(conf_defname); env = getenv(SRCTREE); if (env) { sprintf(fullname, "%s/%s", env, name); if (!stat(fullname, &buf)) return fullname; } return name; } int conf_read_simple(const char *name, int def) { FILE *in = NULL; char line[1024]; char *p, *p2; struct symbol *sym; int i, def_flags; if (name) { in = zconf_fopen(name); } else { const char **names = conf_confnames; name = *names++; if (!name) return 1; in = zconf_fopen(name); if (in) goto load; sym_change_count++; while ((name = *names++)) { name = conf_expand_value(name); in = zconf_fopen(name); if (in) { printf(_("#\n" "# using defaults found in %s\n" "#\n"), name); goto load; } } } if (!in) return 1; load: conf_filename = name; conf_lineno = 0; conf_warnings = 0; conf_unsaved = 0; def_flags = SYMBOL_DEF << def; for_all_symbols(i, sym) { sym->flags |= SYMBOL_CHANGED; sym->flags &= ~(def_flags|SYMBOL_VALID); if (sym_is_choice(sym)) sym->flags |= def_flags; switch (sym->type) { case S_INT: case S_HEX: case S_STRING: if (sym->def[def].val) free(sym->def[def].val); default: sym->def[def].val = NULL; sym->def[def].tri = no; } } while (fgets(line, sizeof(line), in)) { conf_lineno++; sym = NULL; switch (line[0]) { case '#': if (memcmp(line + 2, "CONFIG_", 7)) continue; p = strchr(line + 9, ' '); if (!p) continue; *p++ = 0; if (strncmp(p, "is not set", 10)) continue; if (def == S_DEF_USER) { sym = sym_find(line + 9); if (!sym) { conf_warning("trying to assign nonexistent symbol %s", line + 9); break; } } else { sym = sym_lookup(line + 9, 0); if (sym->type == S_UNKNOWN) sym->type = S_BOOLEAN; } if (sym->flags & def_flags) { conf_warning("trying to reassign symbol %s", sym->name); break; } switch (sym->type) { case S_BOOLEAN: case S_TRISTATE: sym->def[def].tri = no; sym->flags |= def_flags; break; default: ; } break; case 'C': if (memcmp(line, "CONFIG_", 7)) { conf_warning("unexpected data"); continue; } p = strchr(line + 7, '='); if (!p) continue; *p++ = 0; p2 = strchr(p, '\n'); if (p2) *p2 = 0; if (def == S_DEF_USER) { sym = sym_find(line + 7); if (!sym) { conf_warning("trying to assign nonexistent symbol %s", line + 7); break; } } else { sym = sym_lookup(line + 7, 0); if (sym->type == S_UNKNOWN) sym->type = S_OTHER; } if (sym->flags & def_flags) { conf_warning("trying to reassign symbol %s", sym->name); break; } switch (sym->type) { case S_TRISTATE: if (p[0] == 'm') { sym->def[def].tri = mod; sym->flags |= def_flags; break; } case S_BOOLEAN: if (p[0] == 'y') { sym->def[def].tri = yes; sym->flags |= def_flags; break; } if (p[0] == 'n') { sym->def[def].tri = no; sym->flags |= def_flags; break; } conf_warning("symbol value '%s' invalid for %s", p, sym->name); break; case S_OTHER: if (*p != '"') { for (p2 = p; *p2 && !isspace(*p2); p2++) ; sym->type = S_STRING; goto done; } case S_STRING: if (*p++ != '"') break; for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) { if (*p2 == '"') { *p2 = 0; break; } memmove(p2, p2 + 1, strlen(p2)); } if (!p2) { conf_warning("invalid string found"); continue; } case S_INT: case S_HEX: done: if (sym_string_valid(sym, p)) { sym->def[def].val = strdup(p); sym->flags |= def_flags; } else { conf_warning("symbol value '%s' invalid for %s", p, sym->name); continue; } break; default: ; } break; case '\n': break; default: conf_warning("unexpected data"); continue; } if (sym && sym_is_choice_value(sym)) { struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); switch (sym->def[def].tri) { case no: break; case mod: if (cs->def[def].tri == yes) { conf_warning("%s creates inconsistent choice state", sym->name); cs->flags &= ~def_flags; } break; case yes: if (cs->def[def].tri != no) { conf_warning("%s creates inconsistent choice state", sym->name); cs->flags &= ~def_flags; } else cs->def[def].val = sym; break; } cs->def[def].tri = E_OR(cs->def[def].tri, sym->def[def].tri); } } fclose(in); if (modules_sym) sym_calc_value(modules_sym); return 0; } int conf_read(const char *name) { struct symbol *sym; struct property *prop; struct expr *e; int i, flags; sym_change_count = 0; if (conf_read_simple(name, S_DEF_USER)) return 1; for_all_symbols(i, sym) { sym_calc_value(sym); if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO)) goto sym_ok; if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) { /* check that calculated value agrees with saved value */ switch (sym->type) { case S_BOOLEAN: case S_TRISTATE: if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym)) break; if (!sym_is_choice(sym)) goto sym_ok; default: if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val)) goto sym_ok; break; } } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE)) /* no previous value and not saved */ goto sym_ok; conf_unsaved++; /* maybe print value in verbose mode... */ sym_ok: if (sym_has_value(sym) && !sym_is_choice_value(sym)) { if (sym->visible == no) sym->flags &= ~SYMBOL_DEF_USER; switch (sym->type) { case S_STRING: case S_INT: case S_HEX: if (!sym_string_within_range(sym, sym->def[S_DEF_USER].val)) sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER); default: break; } } if (!sym_is_choice(sym)) continue; prop = sym_get_choice_prop(sym); flags = sym->flags; for (e = prop->expr; e; e = e->left.expr) if (e->right.sym->visible != no) flags &= e->right.sym->flags; sym->flags |= flags & SYMBOL_DEF_USER; } sym_change_count += conf_warnings || conf_unsaved; return 0; } int conf_write(const char *name) { FILE *out; struct symbol *sym; struct menu *menu; const char *basename; char dirname[128], tmpname[128], newname[128]; int type, l; const char *str; time_t now; int use_timestamp = 1; char *env; dirname[0] = 0; if (name && name[0]) { struct stat st; char *slash; if (!stat(name, &st) && S_ISDIR(st.st_mode)) { strcpy(dirname, name); strcat(dirname, "/"); basename = conf_def_filename; } else if ((slash = strrchr(name, '/'))) { int size = slash - name + 1; memcpy(dirname, name, size); dirname[size] = 0; if (slash[1]) basename = slash + 1; else basename = conf_def_filename; } else basename = name; } else basename = conf_def_filename; sprintf(newname, "%s.tmpconfig.%d", dirname, (int)getpid()); out = fopen(newname, "w"); if (!out) return 1; sym = sym_lookup("KERNELVERSION", 0); sym_calc_value(sym); time(&now); env = getenv("KCONFIG_NOTIMESTAMP"); if (env && *env) use_timestamp = 0; fprintf(out, _("#\n" "# Automatically generated make config: don't edit\n" "# Linux kernel version: %s\n" "%s%s" "#\n"), sym_get_string_value(sym), use_timestamp ? "# " : "", use_timestamp ? ctime(&now) : ""); if (!sym_change_count) sym_clear_all_valid(); menu = rootmenu.list; while (menu) { sym = menu->sym; if (!sym) { if (!menu_is_visible(menu)) goto next; str = menu_get_prompt(menu); fprintf(out, "\n" "#\n" "# %s\n" "#\n", str); } else if (!(sym->flags & SYMBOL_CHOICE)) { sym_calc_value(sym); if (!(sym->flags & SYMBOL_WRITE)) goto next; sym->flags &= ~SYMBOL_WRITE; type = sym->type; if (type == S_TRISTATE) { sym_calc_value(modules_sym); if (modules_sym->curr.tri == no) type = S_BOOLEAN; } switch (type) { case S_BOOLEAN: case S_TRISTATE: switch (sym_get_tristate_value(sym)) { case no: fprintf(out, "# CONFIG_%s is not set\n", sym->name); break; case mod: fprintf(out, "CONFIG_%s=m\n", sym->name); break; case yes: fprintf(out, "CONFIG_%s=y\n", sym->name); break; } break; case S_STRING: str = sym_get_string_value(sym); fprintf(out, "CONFIG_%s=\"", sym->name); while (1) { l = strcspn(str, "\"\\"); if (l) { fwrite(str, l, 1, out); str += l; } if (!*str) break; fprintf(out, "\\%c", *str++); } fputs("\"\n", out); break; case S_HEX: str = sym_get_string_value(sym); if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) { fprintf(out, "CONFIG_%s=%s\n", sym->name, str); break; } case S_INT: str = sym_get_string_value(sym); fprintf(out, "CONFIG_%s=%s\n", sym->name, str); break; } } next: if (menu->list) { menu = menu->list; continue; } if (menu->next) menu = menu->next; else while ((menu = menu->parent)) { if (menu->next) { menu = menu->next; break; } } } fclose(out); if (!name || basename != conf_def_filename) { if (!name) name = conf_def_filename; sprintf(tmpname, "%s.old", name); rename(name, tmpname); } sprintf(tmpname, "%s%s", dirname, basename); if (rename(newname, tmpname)) return 1; printf(_("#\n" "# configuration written to %s\n" "#\n"), tmpname); sym_change_count = 0; return 0; } int conf_write_autoconf(void) { struct symbol *sym; const char *str; char *name; FILE *out, *out_h; time_t now; int i, l; file_write_dep("include/config/auto.conf.cmd"); out = fopen(".tmpconfig", "w"); if (!out) return 1; out_h = fopen(".tmpconfig.h", "w"); if (!out_h) { fclose(out); return 1; } sym = sym_lookup("KERNELVERSION", 0); sym_calc_value(sym); time(&now); fprintf(out, "#\n" "# Automatically generated make config: don't edit\n" "# Linux kernel version: %s\n" "# %s" "#\n", sym_get_string_value(sym), ctime(&now)); fprintf(out_h, "/*\n" " * Automatically generated C config: don't edit\n" " * Linux kernel version: %s\n" " * %s" " */\n" "#define AUTOCONF_INCLUDED\n", sym_get_string_value(sym), ctime(&now)); sym_clear_all_valid(); for_all_symbols(i, sym) { sym_calc_value(sym); if (!(sym->flags & SYMBOL_WRITE) || !sym->name) continue; switch (sym->type) { case S_BOOLEAN: case S_TRISTATE: switch (sym_get_tristate_value(sym)) { case no: break; case mod: fprintf(out, "CONFIG_%s=m\n", sym->name); fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name); break; case yes: fprintf(out, "CONFIG_%s=y\n", sym->name); fprintf(out_h, "#define CONFIG_%s 1\n", sym->name); break; } break; case S_STRING: str = sym_get_string_value(sym); fprintf(out, "CONFIG_%s=\"", sym->name); fprintf(out_h, "#define CONFIG_%s \"", sym->name); while (1) { l = strcspn(str, "\"\\"); if (l) { fwrite(str, l, 1, out); fwrite(str, l, 1, out_h); str += l; } if (!*str) break; fprintf(out, "\\%c", *str); fprintf(out_h, "\\%c", *str); str++; } fputs("\"\n", out); fputs("\"\n", out_h); break; case S_HEX: str = sym_get_string_value(sym); if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) { fprintf(out, "CONFIG_%s=%s\n", sym->name, str); fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str); break; } case S_INT: str = sym_get_string_value(sym); fprintf(out, "CONFIG_%s=%s\n", sym->name, str); fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str); break; default: break; } } fclose(out); fclose(out_h); name = getenv("KCONFIG_AUTOHEADER"); if (!name) name = "include/linux/autoconf.h"; if (rename(".tmpconfig.h", name)) return 1; name = getenv("KCONFIG_AUTOCONFIG"); if (!name) name = "include/config/auto.conf"; /* * This must be the last step, kbuild has a dependency on auto.conf * and this marks the successful completion of the previous steps. */ if (rename(".tmpconfig", name)) return 1; return 0; }