X-Git-Url: https://jxself.org/git/?p=carl9170fw.git;a=blobdiff_plain;f=config%2Fconfdata.c;h=57c09a7d3883914627ea3ababa9b6f1bbe486bd0;hp=b7171503936a208af6e103d07ad54c2a8d95ce38;hb=786134321b6ef391f04409de1200482e7693284d;hpb=f239f43b91dfa5fbec1a8d19b41db0b792d4c751 diff --git a/config/confdata.c b/config/confdata.c index b717150..57c09a7 100644 --- a/config/confdata.c +++ b/config/confdata.c @@ -1,12 +1,13 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2002 Roman Zippel - * Released under the terms of the GNU GPL v2.0. */ #include #include #include #include +#include #include #include #include @@ -74,6 +75,47 @@ static int make_parent_dir(const char *path) return 0; } +static char depfile_path[PATH_MAX]; +static size_t depfile_prefix_len; + +/* touch depfile for symbol 'name' */ +static int conf_touch_dep(const char *name) +{ + int fd, ret; + const char *s; + char *d, c; + + /* check overflow: prefix + name + ".h" + '\0' must fit in buffer. */ + if (depfile_prefix_len + strlen(name) + 3 > sizeof(depfile_path)) + return -1; + + d = depfile_path + depfile_prefix_len; + s = name; + + while ((c = *s++)) + *d++ = (c == '_') ? '/' : tolower(c); + strcpy(d, ".h"); + + /* Assume directory path already exists. */ + fd = open(depfile_path, O_WRONLY | O_CREAT | O_TRUNC, 0644); + if (fd == -1) { + if (errno != ENOENT) + return -1; + + ret = make_parent_dir(depfile_path); + if (ret) + return ret; + + /* Try it again. */ + fd = open(depfile_path, O_WRONLY | O_CREAT | O_TRUNC, 0644); + if (fd == -1) + return -1; + } + close(fd); + + return 0; +} + struct conf_printer { void (*print_symbol)(FILE *, struct symbol *, const char *, void *); void (*print_comment)(FILE *, const char *, void *); @@ -186,14 +228,6 @@ static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p) conf_warning("symbol value '%s' invalid for %s", p, sym->name); return 1; - case S_OTHER: - if (*p != '"') { - for (p2 = p; *p2 && !isspace(*p2); p2++) - ; - sym->type = S_STRING; - goto done; - } - /* fall through */ case S_STRING: if (*p++ != '"') break; @@ -212,7 +246,6 @@ static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p) /* fall through */ case S_INT: case S_HEX: - done: if (sym_string_valid(sym, p)) { sym->def[def].val = xstrdup(p); sym->flags |= def_flags; @@ -393,17 +426,22 @@ load: if (*p2 == '\r') *p2 = 0; } - if (def == S_DEF_USER) { - sym = sym_find(line + strlen(CONFIG_)); - if (!sym) { + + sym = sym_find(line + strlen(CONFIG_)); + if (!sym) { + if (def == S_DEF_AUTO) + /* + * Reading from include/config/auto.conf + * If CONFIG_FOO previously existed in + * auto.conf but it is missing now, + * include/config/foo.h must be touched. + */ + conf_touch_dep(line + strlen(CONFIG_)); + else sym_add_change_count(1); - continue; - } - } else { - sym = sym_lookup(line + strlen(CONFIG_), 0); - if (sym->type == S_UNKNOWN) - sym->type = S_OTHER; + continue; } + if (sym->flags & def_flags) { conf_warning("override: reassigning to symbol %s", sym->name); } @@ -544,46 +582,6 @@ kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg) fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value); } -static void -kconfig_print_cmake_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg) -{ - - switch (sym->type) { - case S_BOOLEAN: - case S_TRISTATE: - if (*value == 'n') { - bool skip_unset = (arg != NULL); - - if (!skip_unset) - fprintf(fp, "set(%s%s false)\n", - CONFIG_, sym->name, value); - return; - } else if (*value == 'm') { - abort(); - } else { - fprintf(fp, "set(%s%s true)\n", CONFIG_, sym->name, value); - } - break; - case S_HEX: { - const char *prefix = ""; - - if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X')) - prefix = "0x"; - fprintf(fp, "set(%s%s %s%s)\n", - CONFIG_, sym->name, prefix, value); - break; - } - case S_STRING: - case S_INT: - fprintf(fp, "set(%s%s %s)\n", - CONFIG_, sym->name, value); - break; - default: - break; - } - -} - static void kconfig_print_comment(FILE *fp, const char *value, void *arg) { @@ -610,12 +608,6 @@ static struct conf_printer kconfig_printer_cb = .print_comment = kconfig_print_comment, }; -static struct conf_printer kconfig_printer_cmake_cb = -{ - .print_symbol = kconfig_print_cmake_symbol, - .print_comment = kconfig_print_comment, -}; - /* * Header printer * @@ -715,7 +707,6 @@ static void conf_write_symbol(FILE *fp, struct symbol *sym, const char *str; switch (sym->type) { - case S_OTHER: case S_UNKNOWN: break; case S_STRING: @@ -952,24 +943,19 @@ static int conf_write_dep(const char *name) return 0; } -static int conf_split_config(void) +static int conf_touch_deps(void) { const char *name; - char path[PATH_MAX+1]; - char *s, *d, c; struct symbol *sym; - int res, i, fd; + int res, i; + + strcpy(depfile_path, "include/generated/"); + depfile_prefix_len = strlen(depfile_path); name = conf_get_autoconfig_name(); conf_read_simple(name, S_DEF_AUTO); sym_calc_value(modules_sym); - if (make_parent_dir("include/generated/foo.h")) - return 1; - if (chdir("include/generated")) - return 1; - - res = 0; for_all_symbols(i, sym) { sym_calc_value(sym); if ((sym->flags & SYMBOL_NO_WRITE) || !sym->name) @@ -1021,56 +1007,30 @@ static int conf_split_config(void) * different from 'no'). */ - /* Replace all '_' and append ".h" */ - s = sym->name; - d = path; - while ((c = *s++)) { - c = tolower(c); - *d++ = (c == '_') ? '/' : c; - } - strcpy(d, ".h"); - - /* Assume directory path already exists. */ - fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); - if (fd == -1) { - if (errno != ENOENT) { - res = 1; - break; - } - - if (make_parent_dir(path)) { - res = 1; - goto out; - } - - /* Try it again. */ - fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); - if (fd == -1) { - res = 1; - break; - } - } - close(fd); + res = conf_touch_dep(sym->name); + if (res) + return res; } -out: - if (chdir("../..")) - return 1; - return res; + return 0; } -int conf_write_autoconf(void) +int conf_write_autoconf(int overwrite) { struct symbol *sym; const char *name; - FILE *out, *tristate, *out_h, *out_c; + const char *autoconf_name = conf_get_autoconfig_name(); + FILE *out, *tristate, *out_h; int i; + if (!overwrite && is_present(autoconf_name)) + return 0; + sym_clear_all_valid(); conf_write_dep("include/generated/auto.conf.cmd"); - if (conf_split_config()) + if (conf_touch_deps()) return 1; out = fopen(".tmpconfig", "w"); @@ -1090,21 +1050,12 @@ int conf_write_autoconf(void) return 1; } - out_c = fopen(".tmpconfig.cmake", "w"); - if (!out_c) { - fclose(out); - fclose(tristate); - fclose(out_h); - } - conf_write_heading(out, &kconfig_printer_cb, NULL); conf_write_heading(tristate, &tristate_printer_cb, NULL); conf_write_heading(out_h, &header_printer_cb, NULL); - conf_write_heading(out_c, &kconfig_printer_cmake_cb, NULL); - for_all_symbols(i, sym) { sym_calc_value(sym); if (!(sym->flags & SYMBOL_WRITE) || !sym->name) @@ -1116,13 +1067,10 @@ int conf_write_autoconf(void) conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1); conf_write_symbol(out_h, sym, &header_printer_cb, NULL); - - conf_write_symbol(out_c, sym, &kconfig_printer_cmake_cb, NULL); } fclose(out); fclose(tristate); fclose(out_h); - fclose(out_c); name = getenv("KCONFIG_AUTOHEADER"); if (!name) @@ -1140,23 +1088,13 @@ int conf_write_autoconf(void) if (rename(".tmpconfig_tristate", name)) return 1; - name = getenv("KCONFIG_CMAKE"); - if (!name) - name = "config.cmake"; - if (make_parent_dir(name)) - return 1; - if (rename(".tmpconfig.cmake", name)) - return 1; - - name = conf_get_autoconfig_name(); - if (make_parent_dir(name)) + if (make_parent_dir(autoconf_name)) return 1; - /* * 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)) + if (rename(".tmpconfig", autoconf_name)) return 1; return 0;