Martin Roth | be08c1d | 2024-02-16 09:12:33 -0700 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 4 | */ |
| 5 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 6 | #include <sys/mman.h> |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 7 | #include <sys/stat.h> |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 8 | #include <sys/types.h> |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 9 | #include <ctype.h> |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 10 | #include <errno.h> |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 11 | #include <fcntl.h> |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 12 | #include <limits.h> |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 13 | #include <stdarg.h> |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 14 | #include <stdbool.h> |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 15 | #include <stdio.h> |
| 16 | #include <stdlib.h> |
| 17 | #include <string.h> |
| 18 | #include <time.h> |
| 19 | #include <unistd.h> |
| 20 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 21 | #include "lkc.h" |
| 22 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 23 | /* return true if 'path' exists, false otherwise */ |
| 24 | static bool is_present(const char *path) |
| 25 | { |
| 26 | struct stat st; |
| 27 | |
| 28 | return !stat(path, &st); |
| 29 | } |
| 30 | |
| 31 | /* return true if 'path' exists and it is a directory, false otherwise */ |
| 32 | static bool is_dir(const char *path) |
| 33 | { |
| 34 | struct stat st; |
| 35 | |
| 36 | if (stat(path, &st)) |
| 37 | return false; |
| 38 | |
| 39 | return S_ISDIR(st.st_mode); |
| 40 | } |
| 41 | |
| 42 | /* return true if the given two files are the same, false otherwise */ |
| 43 | static bool is_same(const char *file1, const char *file2) |
| 44 | { |
| 45 | int fd1, fd2; |
| 46 | struct stat st1, st2; |
| 47 | void *map1, *map2; |
| 48 | bool ret = false; |
| 49 | |
| 50 | fd1 = open(file1, O_RDONLY); |
| 51 | if (fd1 < 0) |
| 52 | return ret; |
| 53 | |
| 54 | fd2 = open(file2, O_RDONLY); |
| 55 | if (fd2 < 0) |
| 56 | goto close1; |
| 57 | |
| 58 | ret = fstat(fd1, &st1); |
| 59 | if (ret) |
| 60 | goto close2; |
| 61 | ret = fstat(fd2, &st2); |
| 62 | if (ret) |
| 63 | goto close2; |
| 64 | |
| 65 | if (st1.st_size != st2.st_size) |
| 66 | goto close2; |
| 67 | |
| 68 | map1 = mmap(NULL, st1.st_size, PROT_READ, MAP_PRIVATE, fd1, 0); |
| 69 | if (map1 == MAP_FAILED) |
| 70 | goto close2; |
| 71 | |
| 72 | map2 = mmap(NULL, st2.st_size, PROT_READ, MAP_PRIVATE, fd2, 0); |
| 73 | if (map2 == MAP_FAILED) |
| 74 | goto close2; |
| 75 | |
| 76 | if (bcmp(map1, map2, st1.st_size)) |
| 77 | goto close2; |
| 78 | |
| 79 | ret = true; |
| 80 | close2: |
| 81 | close(fd2); |
| 82 | close1: |
| 83 | close(fd1); |
| 84 | |
| 85 | return ret; |
| 86 | } |
| 87 | |
| 88 | /* |
| 89 | * Create the parent directory of the given path. |
| 90 | * |
| 91 | * For example, if 'include/config/auto.conf' is given, create 'include/config'. |
| 92 | */ |
| 93 | static int make_parent_dir(const char *path) |
| 94 | { |
| 95 | char tmp[PATH_MAX + 1]; |
| 96 | char *p; |
| 97 | |
| 98 | strncpy(tmp, path, sizeof(tmp)); |
| 99 | tmp[sizeof(tmp) - 1] = 0; |
| 100 | |
| 101 | /* Remove the base name. Just return if nothing is left */ |
| 102 | p = strrchr(tmp, '/'); |
| 103 | if (!p) |
| 104 | return 0; |
| 105 | *(p + 1) = 0; |
| 106 | |
| 107 | /* Just in case it is an absolute path */ |
| 108 | p = tmp; |
| 109 | while (*p == '/') |
| 110 | p++; |
| 111 | |
| 112 | while ((p = strchr(p, '/'))) { |
| 113 | *p = 0; |
| 114 | |
| 115 | /* skip if the directory exists */ |
| 116 | if (!is_dir(tmp) && mkdir(tmp, 0755)) |
| 117 | return -1; |
| 118 | |
| 119 | *p = '/'; |
| 120 | while (*p == '/') |
| 121 | p++; |
| 122 | } |
| 123 | |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | static char depfile_path[PATH_MAX]; |
| 128 | static size_t depfile_prefix_len; |
| 129 | |
| 130 | /* touch depfile for symbol 'name' */ |
| 131 | static int conf_touch_dep(const char *name) |
| 132 | { |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 133 | int fd; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 134 | |
| 135 | /* check overflow: prefix + name + '\0' must fit in buffer. */ |
| 136 | if (depfile_prefix_len + strlen(name) + 1 > sizeof(depfile_path)) |
| 137 | return -1; |
| 138 | |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 139 | strcpy(depfile_path + depfile_prefix_len, name); |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 140 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 141 | fd = open(depfile_path, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 142 | if (fd == -1) |
| 143 | return -1; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 144 | close(fd); |
| 145 | |
| 146 | return 0; |
| 147 | } |
| 148 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 149 | static void conf_warning(const char *fmt, ...) |
| 150 | __attribute__ ((format (printf, 1, 2))); |
| 151 | |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 152 | static void conf_message(const char *fmt, ...) |
| 153 | __attribute__ ((format (printf, 1, 2))); |
| 154 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 155 | static const char *conf_filename; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 156 | static int conf_lineno, conf_warnings; |
zbao | 2f3fd26 | 2015-09-26 06:20:53 -0400 | [diff] [blame] | 157 | |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 158 | #ifdef __MINGW32__ |
| 159 | #define mkdir(_n,_p) mkdir((_n)) |
| 160 | #endif |
| 161 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 162 | static void conf_warning(const char *fmt, ...) |
| 163 | { |
| 164 | va_list ap; |
| 165 | va_start(ap, fmt); |
| 166 | fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno); |
| 167 | vfprintf(stderr, fmt, ap); |
| 168 | fprintf(stderr, "\n"); |
| 169 | va_end(ap); |
| 170 | conf_warnings++; |
| 171 | } |
| 172 | |
Martin Roth | 00cbc7f | 2016-09-21 14:27:26 -0600 | [diff] [blame] | 173 | static void conf_notice(const char *fmt, ...) |
| 174 | { |
| 175 | va_list ap; |
| 176 | va_start(ap, fmt); |
| 177 | fprintf(stderr, "%s:%d:notice: ", conf_filename, conf_lineno); |
| 178 | vfprintf(stderr, fmt, ap); |
| 179 | fprintf(stderr, "\n"); |
| 180 | va_end(ap); |
| 181 | } |
| 182 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 183 | static void conf_default_message_callback(const char *s) |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 184 | { |
| 185 | printf("#\n# "); |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 186 | printf("%s", s); |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 187 | printf("\n#\n"); |
| 188 | } |
| 189 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 190 | static void (*conf_message_callback)(const char *s) = |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 191 | conf_default_message_callback; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 192 | void conf_set_message_callback(void (*fn)(const char *s)) |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 193 | { |
| 194 | conf_message_callback = fn; |
| 195 | } |
| 196 | |
| 197 | static void conf_message(const char *fmt, ...) |
| 198 | { |
| 199 | va_list ap; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 200 | char buf[4096]; |
| 201 | |
| 202 | if (!conf_message_callback) |
| 203 | return; |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 204 | |
| 205 | va_start(ap, fmt); |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 206 | |
| 207 | vsnprintf(buf, sizeof(buf), fmt, ap); |
| 208 | conf_message_callback(buf); |
Stefan Reinauer | cce6662 | 2015-04-06 01:14:21 +0200 | [diff] [blame] | 209 | va_end(ap); |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 210 | } |
| 211 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 212 | const char *conf_get_configname(void) |
| 213 | { |
| 214 | char *name = getenv("KCONFIG_CONFIG"); |
| 215 | |
| 216 | return name ? name : ".config"; |
| 217 | } |
| 218 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 219 | static const char *conf_get_autoconfig_name(void) |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 220 | { |
| 221 | char *name = getenv("KCONFIG_AUTOCONFIG"); |
| 222 | |
| 223 | return name ? name : "include/config/auto.conf"; |
| 224 | } |
| 225 | |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 226 | static const char *conf_get_autoheader_name(void) |
| 227 | { |
| 228 | char *name = getenv("KCONFIG_AUTOHEADER"); |
| 229 | |
| 230 | return name ? name : "include/generated/autoconf.h"; |
| 231 | } |
| 232 | |
Patrick Georgi | 7f93aa4 | 2023-11-20 17:58:40 +0100 | [diff] [blame] | 233 | static const char *conf_get_rustccfg_name(void) |
| 234 | { |
| 235 | char *name = getenv("KCONFIG_RUSTCCFG"); |
| 236 | |
| 237 | return name ? name : "include/generated/rustc_cfg"; |
| 238 | } |
| 239 | |
Martin Roth | 35e09ec | 2022-11-13 15:20:57 -0700 | [diff] [blame] | 240 | static const char *conf_get_autobase_name(void) |
| 241 | { |
| 242 | char *name = getenv("KCONFIG_SPLITCONFIG"); |
| 243 | |
| 244 | return name ? name : "include/config/"; |
| 245 | } |
| 246 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 247 | static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p) |
| 248 | { |
| 249 | char *p2; |
| 250 | |
| 251 | switch (sym->type) { |
| 252 | case S_TRISTATE: |
| 253 | if (p[0] == 'm') { |
| 254 | sym->def[def].tri = mod; |
| 255 | sym->flags |= def_flags; |
| 256 | break; |
| 257 | } |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 258 | /* fall through */ |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 259 | case S_BOOLEAN: |
| 260 | if (p[0] == 'y') { |
| 261 | sym->def[def].tri = yes; |
| 262 | sym->flags |= def_flags; |
| 263 | break; |
| 264 | } |
| 265 | if (p[0] == 'n') { |
| 266 | sym->def[def].tri = no; |
| 267 | sym->flags |= def_flags; |
| 268 | break; |
| 269 | } |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 270 | if (def != S_DEF_AUTO) |
| 271 | conf_warning("symbol value '%s' invalid for %s", |
| 272 | p, sym->name); |
| 273 | return 1; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 274 | case S_STRING: |
Patrick Georgi | 7eb03cb | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 275 | /* No escaping for S_DEF_AUTO (include/config/auto.conf) */ |
| 276 | if (def != S_DEF_AUTO) { |
| 277 | if (*p++ != '"') |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 278 | break; |
Patrick Georgi | 7eb03cb | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 279 | for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) { |
| 280 | if (*p2 == '"') { |
| 281 | *p2 = 0; |
| 282 | break; |
| 283 | } |
| 284 | memmove(p2, p2 + 1, strlen(p2)); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 285 | } |
Patrick Georgi | 7eb03cb | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 286 | if (!p2) { |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 287 | conf_warning("invalid string found"); |
Patrick Georgi | 7eb03cb | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 288 | return 1; |
| 289 | } |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 290 | } |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 291 | /* fall through */ |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 292 | case S_INT: |
| 293 | case S_HEX: |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 294 | if (sym_string_valid(sym, p)) { |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 295 | sym->def[def].val = xstrdup(p); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 296 | sym->flags |= def_flags; |
| 297 | } else { |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 298 | if (def != S_DEF_AUTO) |
| 299 | conf_warning("symbol value '%s' invalid for %s", |
| 300 | p, sym->name); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 301 | return 1; |
| 302 | } |
| 303 | break; |
| 304 | default: |
| 305 | ; |
| 306 | } |
| 307 | return 0; |
| 308 | } |
| 309 | |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 310 | #define LINE_GROWTH 16 |
| 311 | static int add_byte(int c, char **lineptr, size_t slen, size_t *n) |
| 312 | { |
| 313 | char *nline; |
| 314 | size_t new_size = slen + 1; |
| 315 | if (new_size > *n) { |
| 316 | new_size += LINE_GROWTH - 1; |
| 317 | new_size *= 2; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 318 | nline = xrealloc(*lineptr, new_size); |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 319 | if (!nline) |
| 320 | return -1; |
| 321 | |
| 322 | *lineptr = nline; |
| 323 | *n = new_size; |
| 324 | } |
| 325 | |
| 326 | (*lineptr)[slen] = c; |
| 327 | |
| 328 | return 0; |
| 329 | } |
| 330 | |
| 331 | static ssize_t compat_getline(char **lineptr, size_t *n, FILE *stream) |
| 332 | { |
| 333 | char *line = *lineptr; |
| 334 | size_t slen = 0; |
| 335 | |
| 336 | for (;;) { |
| 337 | int c = getc(stream); |
| 338 | |
| 339 | switch (c) { |
| 340 | case '\n': |
| 341 | if (add_byte(c, &line, slen, n) < 0) |
| 342 | goto e_out; |
| 343 | slen++; |
| 344 | /* fall through */ |
| 345 | case EOF: |
| 346 | if (add_byte('\0', &line, slen, n) < 0) |
| 347 | goto e_out; |
| 348 | *lineptr = line; |
| 349 | if (slen == 0) |
| 350 | return -1; |
| 351 | return slen; |
| 352 | default: |
| 353 | if (add_byte(c, &line, slen, n) < 0) |
| 354 | goto e_out; |
| 355 | slen++; |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | e_out: |
| 360 | line[slen-1] = '\0'; |
| 361 | *lineptr = line; |
| 362 | return -1; |
| 363 | } |
| 364 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 365 | int conf_read_simple(const char *name, int def) |
| 366 | { |
| 367 | FILE *in = NULL; |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 368 | char *line = NULL; |
| 369 | size_t line_asize = 0; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 370 | char *p, *p2; |
| 371 | struct symbol *sym; |
| 372 | int i, def_flags; |
Patrick Georgi | 0eab62b | 2023-11-20 19:49:29 +0100 | [diff] [blame] | 373 | const char *warn_unknown; |
| 374 | const char *werror; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 375 | |
Patrick Georgi | 0eab62b | 2023-11-20 19:49:29 +0100 | [diff] [blame] | 376 | warn_unknown = getenv("KCONFIG_WARN_UNKNOWN_SYMBOLS"); |
| 377 | werror = getenv("KCONFIG_WERROR"); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 378 | if (name) { |
| 379 | in = zconf_fopen(name); |
| 380 | } else { |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 381 | char *env; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 382 | |
| 383 | name = conf_get_configname(); |
| 384 | in = zconf_fopen(name); |
| 385 | if (in) |
| 386 | goto load; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 387 | conf_set_changed(true); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 388 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 389 | env = getenv("KCONFIG_DEFCONFIG_LIST"); |
| 390 | if (!env) |
| 391 | return 1; |
| 392 | |
| 393 | while (1) { |
| 394 | bool is_last; |
| 395 | |
| 396 | while (isspace(*env)) |
| 397 | env++; |
| 398 | |
| 399 | if (!*env) |
| 400 | break; |
| 401 | |
| 402 | p = env; |
| 403 | while (*p && !isspace(*p)) |
| 404 | p++; |
| 405 | |
| 406 | is_last = (*p == '\0'); |
| 407 | |
| 408 | *p = '\0'; |
| 409 | |
| 410 | in = zconf_fopen(env); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 411 | if (in) { |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 412 | conf_message("using defaults found in %s", |
| 413 | env); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 414 | goto load; |
| 415 | } |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 416 | |
| 417 | if (is_last) |
| 418 | break; |
| 419 | |
| 420 | env = p + 1; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 421 | } |
| 422 | } |
| 423 | if (!in) |
| 424 | return 1; |
| 425 | |
| 426 | load: |
| 427 | conf_filename = name; |
| 428 | conf_lineno = 0; |
| 429 | conf_warnings = 0; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 430 | |
| 431 | def_flags = SYMBOL_DEF << def; |
| 432 | for_all_symbols(i, sym) { |
| 433 | sym->flags |= SYMBOL_CHANGED; |
| 434 | sym->flags &= ~(def_flags|SYMBOL_VALID); |
| 435 | if (sym_is_choice(sym)) |
| 436 | sym->flags |= def_flags; |
| 437 | switch (sym->type) { |
| 438 | case S_INT: |
| 439 | case S_HEX: |
| 440 | case S_STRING: |
| 441 | if (sym->def[def].val) |
| 442 | free(sym->def[def].val); |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 443 | /* fall through */ |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 444 | default: |
| 445 | sym->def[def].val = NULL; |
| 446 | sym->def[def].tri = no; |
| 447 | } |
| 448 | } |
| 449 | |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 450 | while (compat_getline(&line, &line_asize, in) != -1) { |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 451 | conf_lineno++; |
| 452 | sym = NULL; |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 453 | if (line[0] == '#') { |
| 454 | if (memcmp(line + 2, CONFIG_, strlen(CONFIG_))) |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 455 | continue; |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 456 | p = strchr(line + 2 + strlen(CONFIG_), ' '); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 457 | if (!p) |
| 458 | continue; |
| 459 | *p++ = 0; |
| 460 | if (strncmp(p, "is not set", 10)) |
| 461 | continue; |
| 462 | if (def == S_DEF_USER) { |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 463 | sym = sym_find(line + 2 + strlen(CONFIG_)); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 464 | if (!sym) { |
Patrick Georgi | 0eab62b | 2023-11-20 19:49:29 +0100 | [diff] [blame] | 465 | if (warn_unknown) |
| 466 | conf_warning("unknown symbol: %s", |
| 467 | line + 2 + strlen(CONFIG_)); |
| 468 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 469 | conf_set_changed(true); |
| 470 | continue; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 471 | } |
| 472 | } else { |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 473 | sym = sym_lookup(line + 2 + strlen(CONFIG_), 0); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 474 | if (sym->type == S_UNKNOWN) |
| 475 | sym->type = S_BOOLEAN; |
| 476 | } |
| 477 | if (sym->flags & def_flags) { |
Martin Roth | 00cbc7f | 2016-09-21 14:27:26 -0600 | [diff] [blame] | 478 | conf_notice("override: reassigning to symbol %s", sym->name); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 479 | } |
| 480 | switch (sym->type) { |
| 481 | case S_BOOLEAN: |
| 482 | case S_TRISTATE: |
| 483 | sym->def[def].tri = no; |
| 484 | sym->flags |= def_flags; |
| 485 | break; |
| 486 | default: |
| 487 | ; |
| 488 | } |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 489 | } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) { |
| 490 | p = strchr(line + strlen(CONFIG_), '='); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 491 | if (!p) |
| 492 | continue; |
| 493 | *p++ = 0; |
| 494 | p2 = strchr(p, '\n'); |
| 495 | if (p2) { |
| 496 | *p2-- = 0; |
| 497 | if (*p2 == '\r') |
| 498 | *p2 = 0; |
| 499 | } |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 500 | |
| 501 | sym = sym_find(line + strlen(CONFIG_)); |
| 502 | if (!sym) { |
Patrick Georgi | 0eab62b | 2023-11-20 19:49:29 +0100 | [diff] [blame] | 503 | if (def == S_DEF_AUTO) { |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 504 | /* |
| 505 | * Reading from include/config/auto.conf |
| 506 | * If CONFIG_FOO previously existed in |
| 507 | * auto.conf but it is missing now, |
| 508 | * include/config/FOO must be touched. |
| 509 | */ |
| 510 | conf_touch_dep(line + strlen(CONFIG_)); |
Patrick Georgi | 0eab62b | 2023-11-20 19:49:29 +0100 | [diff] [blame] | 511 | } else { |
| 512 | if (warn_unknown) |
| 513 | conf_warning("unknown symbol: %s", |
| 514 | line + strlen(CONFIG_)); |
| 515 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 516 | conf_set_changed(true); |
Patrick Georgi | 0eab62b | 2023-11-20 19:49:29 +0100 | [diff] [blame] | 517 | } |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 518 | continue; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 519 | } |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 520 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 521 | if (sym->flags & def_flags) { |
Martin Roth | 00cbc7f | 2016-09-21 14:27:26 -0600 | [diff] [blame] | 522 | conf_notice("override: reassigning to symbol %s", sym->name); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 523 | } |
| 524 | if (conf_set_sym_val(sym, def, def_flags, p)) |
| 525 | continue; |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 526 | } else { |
| 527 | if (line[0] != '\r' && line[0] != '\n') |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 528 | conf_warning("unexpected data: %.*s", |
| 529 | (int)strcspn(line, "\r\n"), line); |
| 530 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 531 | continue; |
| 532 | } |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 533 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 534 | if (sym && sym_is_choice_value(sym)) { |
| 535 | struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); |
| 536 | switch (sym->def[def].tri) { |
| 537 | case no: |
| 538 | break; |
| 539 | case mod: |
| 540 | if (cs->def[def].tri == yes) { |
| 541 | conf_warning("%s creates inconsistent choice state", sym->name); |
| 542 | cs->flags &= ~def_flags; |
| 543 | } |
| 544 | break; |
| 545 | case yes: |
| 546 | if (cs->def[def].tri != no) |
Martin Roth | 00cbc7f | 2016-09-21 14:27:26 -0600 | [diff] [blame] | 547 | conf_notice("override: %s changes choice state", sym->name); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 548 | cs->def[def].val = sym; |
| 549 | break; |
| 550 | } |
| 551 | cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri); |
| 552 | } |
| 553 | } |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 554 | free(line); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 555 | fclose(in); |
| 556 | |
Patrick Georgi | 0eab62b | 2023-11-20 19:49:29 +0100 | [diff] [blame] | 557 | if (conf_warnings && werror) { |
| 558 | fprintf(stderr, "\nERROR: %d warnings encountered, and warnings are errors.\n\n", conf_warnings); |
| 559 | exit(1); |
| 560 | } |
Stefan Reinauer | f534203 | 2015-07-17 17:26:48 -0700 | [diff] [blame] | 561 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 562 | return 0; |
| 563 | } |
| 564 | |
| 565 | int conf_read(const char *name) |
| 566 | { |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 567 | struct symbol *sym; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 568 | int conf_unsaved = 0; |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 569 | int i; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 570 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 571 | conf_set_changed(false); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 572 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 573 | if (conf_read_simple(name, S_DEF_USER)) { |
| 574 | sym_calc_value(modules_sym); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 575 | return 1; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 576 | } |
| 577 | |
| 578 | sym_calc_value(modules_sym); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 579 | |
| 580 | for_all_symbols(i, sym) { |
| 581 | sym_calc_value(sym); |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 582 | if (sym_is_choice(sym) || (sym->flags & SYMBOL_NO_WRITE)) |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 583 | continue; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 584 | if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) { |
| 585 | /* check that calculated value agrees with saved value */ |
| 586 | switch (sym->type) { |
| 587 | case S_BOOLEAN: |
| 588 | case S_TRISTATE: |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 589 | if (sym->def[S_DEF_USER].tri == sym_get_tristate_value(sym)) |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 590 | continue; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 591 | break; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 592 | default: |
| 593 | if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val)) |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 594 | continue; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 595 | break; |
| 596 | } |
| 597 | } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE)) |
| 598 | /* no previous value and not saved */ |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 599 | continue; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 600 | conf_unsaved++; |
| 601 | /* maybe print value in verbose mode... */ |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 602 | } |
| 603 | |
| 604 | for_all_symbols(i, sym) { |
| 605 | if (sym_has_value(sym) && !sym_is_choice_value(sym)) { |
| 606 | /* Reset values of generates values, so they'll appear |
| 607 | * as new, if they should become visible, but that |
| 608 | * doesn't quite work if the Kconfig and the saved |
| 609 | * configuration disagree. |
| 610 | */ |
| 611 | if (sym->visible == no && !conf_unsaved) |
| 612 | sym->flags &= ~SYMBOL_DEF_USER; |
| 613 | switch (sym->type) { |
| 614 | case S_STRING: |
| 615 | case S_INT: |
| 616 | case S_HEX: |
| 617 | /* Reset a string value if it's out of range */ |
| 618 | if (sym_string_within_range(sym, sym->def[S_DEF_USER].val)) |
| 619 | break; |
| 620 | sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER); |
| 621 | conf_unsaved++; |
| 622 | break; |
| 623 | default: |
| 624 | break; |
| 625 | } |
| 626 | } |
| 627 | } |
| 628 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 629 | if (conf_warnings || conf_unsaved) |
| 630 | conf_set_changed(true); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 631 | |
| 632 | return 0; |
| 633 | } |
| 634 | |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 635 | struct comment_style { |
| 636 | const char *decoration; |
| 637 | const char *prefix; |
| 638 | const char *postfix; |
| 639 | }; |
| 640 | |
| 641 | static const struct comment_style comment_style_pound = { |
| 642 | .decoration = "#", |
| 643 | .prefix = "#", |
| 644 | .postfix = "#", |
| 645 | }; |
| 646 | |
| 647 | static const struct comment_style comment_style_c = { |
| 648 | .decoration = " *", |
| 649 | .prefix = "/*", |
| 650 | .postfix = " */", |
| 651 | }; |
| 652 | |
| 653 | static void conf_write_heading(FILE *fp, const struct comment_style *cs) |
| 654 | { |
Patrick Georgi | 7f93aa4 | 2023-11-20 17:58:40 +0100 | [diff] [blame] | 655 | if (!cs) |
| 656 | return; |
| 657 | |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 658 | fprintf(fp, "%s\n", cs->prefix); |
| 659 | |
| 660 | fprintf(fp, "%s Automatically generated file; DO NOT EDIT.\n", |
| 661 | cs->decoration); |
| 662 | |
| 663 | fprintf(fp, "%s %s\n", cs->decoration, rootmenu.prompt->text); |
| 664 | |
| 665 | fprintf(fp, "%s\n", cs->postfix); |
| 666 | } |
| 667 | |
| 668 | /* The returned pointer must be freed on the caller side */ |
| 669 | static char *escape_string_value(const char *in) |
| 670 | { |
| 671 | const char *p; |
| 672 | char *out; |
| 673 | size_t len; |
| 674 | |
| 675 | len = strlen(in) + strlen("\"\"") + 1; |
| 676 | |
| 677 | p = in; |
| 678 | while (1) { |
| 679 | p += strcspn(p, "\"\\"); |
| 680 | |
| 681 | if (p[0] == '\0') |
| 682 | break; |
| 683 | |
| 684 | len++; |
| 685 | p++; |
| 686 | } |
| 687 | |
| 688 | out = xmalloc(len); |
| 689 | out[0] = '\0'; |
| 690 | |
| 691 | strcat(out, "\""); |
| 692 | |
| 693 | p = in; |
| 694 | while (1) { |
| 695 | len = strcspn(p, "\"\\"); |
| 696 | strncat(out, p, len); |
| 697 | p += len; |
| 698 | |
| 699 | if (p[0] == '\0') |
| 700 | break; |
| 701 | |
| 702 | strcat(out, "\\"); |
| 703 | strncat(out, p++, 1); |
| 704 | } |
| 705 | |
| 706 | strcat(out, "\""); |
| 707 | |
| 708 | return out; |
| 709 | } |
| 710 | |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 711 | enum output_n { OUTPUT_N, OUTPUT_N_AS_UNSET, OUTPUT_N_NONE }; |
| 712 | |
| 713 | static void __print_symbol(FILE *fp, struct symbol *sym, enum output_n output_n, |
| 714 | bool escape_string) |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 715 | { |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 716 | const char *val; |
| 717 | char *escaped = NULL; |
| 718 | |
| 719 | if (sym->type == S_UNKNOWN) |
| 720 | return; |
| 721 | |
| 722 | val = sym_get_string_value(sym); |
| 723 | |
| 724 | if ((sym->type == S_BOOLEAN || sym->type == S_TRISTATE) && |
| 725 | output_n != OUTPUT_N && *val == 'n') { |
| 726 | if (output_n == OUTPUT_N_AS_UNSET) |
| 727 | fprintf(fp, "# %s%s is not set\n", CONFIG_, sym->name); |
| 728 | return; |
| 729 | } |
| 730 | |
| 731 | if (sym->type == S_STRING && escape_string) { |
| 732 | escaped = escape_string_value(val); |
| 733 | val = escaped; |
| 734 | } |
| 735 | |
| 736 | fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, val); |
| 737 | |
| 738 | free(escaped); |
| 739 | } |
| 740 | |
| 741 | static void print_symbol_for_dotconfig(FILE *fp, struct symbol *sym) |
| 742 | { |
| 743 | __print_symbol(fp, sym, OUTPUT_N_AS_UNSET, true); |
| 744 | } |
| 745 | |
| 746 | static void print_symbol_for_autoconf(FILE *fp, struct symbol *sym) |
| 747 | { |
| 748 | int print_negatives = getenv("KCONFIG_NEGATIVES") != NULL; |
| 749 | enum output_n out = OUTPUT_N_NONE; |
| 750 | if (print_negatives) { |
| 751 | out = OUTPUT_N; |
| 752 | } |
Patrick Georgi | 7eb03cb | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 753 | __print_symbol(fp, sym, out, false); |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 754 | } |
| 755 | |
| 756 | void print_symbol_for_listconfig(struct symbol *sym) |
| 757 | { |
| 758 | __print_symbol(stdout, sym, OUTPUT_N, true); |
| 759 | } |
| 760 | |
| 761 | static void print_symbol_for_c(FILE *fp, struct symbol *sym) |
| 762 | { |
| 763 | const char *val; |
| 764 | const char *sym_suffix = ""; |
| 765 | const char *val_prefix = ""; |
| 766 | char *escaped = NULL; |
| 767 | |
| 768 | if (sym->type == S_UNKNOWN) |
| 769 | return; |
| 770 | |
| 771 | val = sym_get_string_value(sym); |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 772 | |
| 773 | switch (sym->type) { |
| 774 | case S_BOOLEAN: |
| 775 | case S_TRISTATE: |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 776 | switch (*val) { |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 777 | case 'n': |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 778 | if (getenv("KCONFIG_NEGATIVES") != NULL) { |
| 779 | val = "0"; |
| 780 | break; |
| 781 | } |
| 782 | return; |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 783 | case 'm': |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 784 | sym_suffix = "_MODULE"; |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 785 | /* fall through */ |
| 786 | default: |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 787 | val = "1"; |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 788 | } |
| 789 | break; |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 790 | case S_HEX: |
| 791 | if (val[0] != '0' || (val[1] != 'x' && val[1] != 'X')) |
| 792 | val_prefix = "0x"; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 793 | /* fall through */ |
| 794 | case S_INT: |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 795 | if (val[0] == '\0') { |
| 796 | val = "0"; |
| 797 | val_prefix = ""; |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 798 | } |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 799 | break; |
| 800 | case S_STRING: |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 801 | escaped = escape_string_value(val); |
| 802 | val = escaped; |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 803 | default: |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 804 | break; |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 805 | } |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 806 | |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 807 | fprintf(fp, "#define %s%s%s %s%s\n", CONFIG_, sym->name, sym_suffix, |
| 808 | val_prefix, val); |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 809 | |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 810 | free(escaped); |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 811 | } |
| 812 | |
Patrick Georgi | 7f93aa4 | 2023-11-20 17:58:40 +0100 | [diff] [blame] | 813 | static void print_symbol_for_rustccfg(FILE *fp, struct symbol *sym) |
| 814 | { |
| 815 | const char *val; |
| 816 | const char *val_prefix = ""; |
| 817 | char *val_prefixed = NULL; |
| 818 | size_t val_prefixed_len; |
| 819 | char *escaped = NULL; |
| 820 | |
| 821 | if (sym->type == S_UNKNOWN) |
| 822 | return; |
| 823 | |
| 824 | val = sym_get_string_value(sym); |
| 825 | |
| 826 | switch (sym->type) { |
| 827 | case S_BOOLEAN: |
| 828 | case S_TRISTATE: |
| 829 | /* |
| 830 | * We do not care about disabled ones, i.e. no need for |
| 831 | * what otherwise are "comments" in other printers. |
| 832 | */ |
| 833 | if (*val == 'n') |
| 834 | return; |
| 835 | |
| 836 | /* |
| 837 | * To have similar functionality to the C macro `IS_ENABLED()` |
| 838 | * we provide an empty `--cfg CONFIG_X` here in both `y` |
| 839 | * and `m` cases. |
| 840 | * |
| 841 | * Then, the common `fprintf()` below will also give us |
| 842 | * a `--cfg CONFIG_X="y"` or `--cfg CONFIG_X="m"`, which can |
| 843 | * be used as the equivalent of `IS_BUILTIN()`/`IS_MODULE()`. |
| 844 | */ |
| 845 | fprintf(fp, "--cfg=%s%s\n", CONFIG_, sym->name); |
| 846 | break; |
| 847 | case S_HEX: |
| 848 | if (val[0] != '0' || (val[1] != 'x' && val[1] != 'X')) |
| 849 | val_prefix = "0x"; |
| 850 | break; |
| 851 | default: |
| 852 | break; |
| 853 | } |
| 854 | |
| 855 | if (strlen(val_prefix) > 0) { |
| 856 | val_prefixed_len = strlen(val) + strlen(val_prefix) + 1; |
| 857 | val_prefixed = xmalloc(val_prefixed_len); |
| 858 | snprintf(val_prefixed, val_prefixed_len, "%s%s", val_prefix, val); |
| 859 | val = val_prefixed; |
| 860 | } |
| 861 | |
| 862 | /* All values get escaped: the `--cfg` option only takes strings */ |
| 863 | escaped = escape_string_value(val); |
| 864 | val = escaped; |
| 865 | |
| 866 | fprintf(fp, "--cfg=%s%s=%s\n", CONFIG_, sym->name, val); |
| 867 | |
| 868 | free(escaped); |
| 869 | free(val_prefixed); |
| 870 | } |
| 871 | |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 872 | /* |
| 873 | * Write out a minimal config. |
| 874 | * All values that has default values are skipped as this is redundant. |
| 875 | */ |
| 876 | int conf_write_defconfig(const char *filename) |
| 877 | { |
| 878 | struct symbol *sym; |
| 879 | struct menu *menu; |
| 880 | FILE *out; |
| 881 | |
| 882 | out = fopen(filename, "w"); |
| 883 | if (!out) |
| 884 | return 1; |
| 885 | |
| 886 | sym_clear_all_valid(); |
| 887 | |
| 888 | /* Traverse all menus to find all relevant symbols */ |
| 889 | menu = rootmenu.list; |
| 890 | |
| 891 | while (menu != NULL) |
| 892 | { |
| 893 | sym = menu->sym; |
| 894 | if (sym == NULL) { |
| 895 | if (!menu_is_visible(menu)) |
| 896 | goto next_menu; |
| 897 | } else if (!sym_is_choice(sym)) { |
| 898 | sym_calc_value(sym); |
| 899 | if (!(sym->flags & SYMBOL_WRITE)) |
| 900 | goto next_menu; |
| 901 | sym->flags &= ~SYMBOL_WRITE; |
| 902 | /* If we cannot change the symbol - skip */ |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 903 | if (!sym_is_changeable(sym)) |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 904 | goto next_menu; |
| 905 | /* If symbol equals to default value - skip */ |
| 906 | if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0) |
| 907 | goto next_menu; |
| 908 | |
| 909 | /* |
| 910 | * If symbol is a choice value and equals to the |
| 911 | * default for a choice - skip. |
| 912 | * But only if value is bool and equal to "y" and |
| 913 | * choice is not "optional". |
| 914 | * (If choice is "optional" then all values can be "n") |
| 915 | */ |
| 916 | if (sym_is_choice_value(sym)) { |
| 917 | struct symbol *cs; |
| 918 | struct symbol *ds; |
| 919 | |
| 920 | cs = prop_get_symbol(sym_get_choice_prop(sym)); |
| 921 | ds = sym_choice_default(cs); |
| 922 | if (!sym_is_optional(cs) && sym == ds) { |
| 923 | if ((sym->type == S_BOOLEAN) && |
| 924 | sym_get_tristate_value(sym) == yes) |
| 925 | goto next_menu; |
| 926 | } |
| 927 | } |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 928 | print_symbol_for_dotconfig(out, sym); |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 929 | } |
| 930 | next_menu: |
| 931 | if (menu->list != NULL) { |
| 932 | menu = menu->list; |
| 933 | } |
| 934 | else if (menu->next != NULL) { |
| 935 | menu = menu->next; |
| 936 | } else { |
| 937 | while ((menu = menu->parent)) { |
| 938 | if (menu->next != NULL) { |
| 939 | menu = menu->next; |
| 940 | break; |
| 941 | } |
| 942 | } |
| 943 | } |
| 944 | } |
| 945 | fclose(out); |
| 946 | return 0; |
| 947 | } |
| 948 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 949 | int conf_write(const char *name) |
| 950 | { |
| 951 | FILE *out; |
| 952 | struct symbol *sym; |
| 953 | struct menu *menu; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 954 | const char *str; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 955 | char tmpname[PATH_MAX + 1], oldname[PATH_MAX + 1]; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 956 | char *env; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 957 | int i; |
| 958 | bool need_newline = false; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 959 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 960 | if (!name) |
Raul E Rangel | d2f90a0 | 2019-07-25 16:00:50 -0600 | [diff] [blame] | 961 | name = conf_get_configname(); |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 962 | |
| 963 | if (!*name) { |
| 964 | fprintf(stderr, "config name is empty\n"); |
| 965 | return -1; |
Raul E Rangel | d2f90a0 | 2019-07-25 16:00:50 -0600 | [diff] [blame] | 966 | } |
| 967 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 968 | if (is_dir(name)) { |
| 969 | fprintf(stderr, "%s: Is a directory\n", name); |
| 970 | return -1; |
Raul E Rangel | d2f90a0 | 2019-07-25 16:00:50 -0600 | [diff] [blame] | 971 | } |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 972 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 973 | if (make_parent_dir(name)) |
| 974 | return -1; |
| 975 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 976 | env = getenv("KCONFIG_OVERWRITECONFIG"); |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 977 | if (env && *env) { |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 978 | *tmpname = 0; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 979 | out = fopen(name, "w"); |
| 980 | } else { |
| 981 | snprintf(tmpname, sizeof(tmpname), "%s.%d.tmp", |
| 982 | name, (int)getpid()); |
| 983 | out = fopen(tmpname, "w"); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 984 | } |
| 985 | if (!out) |
| 986 | return 1; |
| 987 | |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 988 | conf_write_heading(out, &comment_style_pound); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 989 | |
| 990 | if (!conf_get_changed()) |
| 991 | sym_clear_all_valid(); |
| 992 | |
| 993 | menu = rootmenu.list; |
| 994 | while (menu) { |
| 995 | sym = menu->sym; |
| 996 | if (!sym) { |
| 997 | if (!menu_is_visible(menu)) |
| 998 | goto next; |
| 999 | str = menu_get_prompt(menu); |
| 1000 | fprintf(out, "\n" |
| 1001 | "#\n" |
| 1002 | "# %s\n" |
| 1003 | "#\n", str); |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1004 | need_newline = false; |
| 1005 | } else if (!(sym->flags & SYMBOL_CHOICE) && |
| 1006 | !(sym->flags & SYMBOL_WRITTEN)) { |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1007 | sym_calc_value(sym); |
| 1008 | if (!(sym->flags & SYMBOL_WRITE)) |
| 1009 | goto next; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1010 | if (need_newline) { |
| 1011 | fprintf(out, "\n"); |
| 1012 | need_newline = false; |
| 1013 | } |
| 1014 | sym->flags |= SYMBOL_WRITTEN; |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1015 | print_symbol_for_dotconfig(out, sym); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1016 | } |
| 1017 | |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 1018 | next: |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1019 | if (menu->list) { |
| 1020 | menu = menu->list; |
| 1021 | continue; |
| 1022 | } |
Patrick Georgi | 5526be2 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1023 | |
| 1024 | end_check: |
| 1025 | if (!menu->sym && menu_is_visible(menu) && menu != &rootmenu && |
| 1026 | menu->prompt->type == P_MENU) { |
| 1027 | fprintf(out, "# end of %s\n", menu_get_prompt(menu)); |
| 1028 | need_newline = true; |
| 1029 | } |
| 1030 | |
| 1031 | if (menu->next) { |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1032 | menu = menu->next; |
Patrick Georgi | 5526be2 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1033 | } else { |
| 1034 | menu = menu->parent; |
| 1035 | if (menu) |
| 1036 | goto end_check; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1037 | } |
| 1038 | } |
| 1039 | fclose(out); |
| 1040 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1041 | for_all_symbols(i, sym) |
| 1042 | sym->flags &= ~SYMBOL_WRITTEN; |
| 1043 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1044 | if (*tmpname) { |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1045 | if (is_same(name, tmpname)) { |
| 1046 | conf_message("No change to %s", name); |
| 1047 | unlink(tmpname); |
| 1048 | conf_set_changed(false); |
| 1049 | return 0; |
| 1050 | } |
| 1051 | |
| 1052 | snprintf(oldname, sizeof(oldname), "%s.old", name); |
| 1053 | rename(name, oldname); |
| 1054 | if (rename(tmpname, name)) |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1055 | return 1; |
| 1056 | } |
| 1057 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1058 | conf_message("configuration written to %s", name); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1059 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1060 | conf_set_changed(false); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1061 | |
| 1062 | return 0; |
| 1063 | } |
| 1064 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1065 | /* write a dependency file as used by kbuild to track dependencies */ |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1066 | static int conf_write_autoconf_cmd(const char *autoconf_name) |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1067 | { |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1068 | char name[PATH_MAX], tmp[PATH_MAX]; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1069 | struct file *file; |
| 1070 | FILE *out; |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1071 | int ret; |
| 1072 | |
| 1073 | ret = snprintf(name, sizeof(name), "%s.cmd", autoconf_name); |
| 1074 | if (ret >= sizeof(name)) /* check truncation */ |
| 1075 | return -1; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1076 | |
| 1077 | if (make_parent_dir(name)) |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1078 | return -1; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1079 | |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1080 | ret = snprintf(tmp, sizeof(tmp), "%s.cmd.tmp", autoconf_name); |
| 1081 | if (ret >= sizeof(tmp)) /* check truncation */ |
| 1082 | return -1; |
| 1083 | |
| 1084 | out = fopen(tmp, "w"); |
| 1085 | if (!out) { |
| 1086 | perror("fopen"); |
| 1087 | return -1; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1088 | } |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1089 | |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1090 | fprintf(out, "deps_config := \\\n"); |
| 1091 | for (file = file_list; file; file = file->next) |
| 1092 | fprintf(out, "\t%s \\\n", file->name); |
| 1093 | |
| 1094 | fprintf(out, "\n%s: $(deps_config)\n\n", autoconf_name); |
| 1095 | |
| 1096 | env_write_dep(out, autoconf_name); |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1097 | |
| 1098 | fprintf(out, "\n$(deps_config): ;\n"); |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1099 | |
Patrick Georgi | 5526be2 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1100 | fflush(out); |
Patrick Georgi | 7eb03cb | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1101 | ret = ferror(out); /* error check for all fprintf() calls */ |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1102 | fclose(out); |
Patrick Georgi | 7eb03cb | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1103 | if (ret) |
| 1104 | return -1; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1105 | |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1106 | if (rename(tmp, name)) { |
| 1107 | perror("rename"); |
| 1108 | return -1; |
| 1109 | } |
| 1110 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1111 | return 0; |
| 1112 | } |
| 1113 | |
| 1114 | static int conf_touch_deps(void) |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1115 | { |
Martin Roth | 35e09ec | 2022-11-13 15:20:57 -0700 | [diff] [blame] | 1116 | const char *name; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1117 | struct symbol *sym; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1118 | int res, i; |
| 1119 | |
Nicholas Chin | 8ef2f7c | 2022-11-23 10:18:32 -0700 | [diff] [blame] | 1120 | /* |
| 1121 | * Upstream Kconfig sets depfile_path based on the directory |
| 1122 | * prefix of the autoconfig path, but coreboot overrides this |
| 1123 | * using the KCONFIG_SPLITCONFIG environment variable |
| 1124 | */ |
Martin Roth | 35e09ec | 2022-11-13 15:20:57 -0700 | [diff] [blame] | 1125 | strcpy(depfile_path, conf_get_autobase_name()); |
| 1126 | depfile_prefix_len = strlen(depfile_path); |
| 1127 | |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 1128 | name = conf_get_autoconfig_name(); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1129 | conf_read_simple(name, S_DEF_AUTO); |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1130 | sym_calc_value(modules_sym); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1131 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1132 | for_all_symbols(i, sym) { |
| 1133 | sym_calc_value(sym); |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1134 | if ((sym->flags & SYMBOL_NO_WRITE) || !sym->name) |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1135 | continue; |
| 1136 | if (sym->flags & SYMBOL_WRITE) { |
| 1137 | if (sym->flags & SYMBOL_DEF_AUTO) { |
| 1138 | /* |
| 1139 | * symbol has old and new value, |
| 1140 | * so compare them... |
| 1141 | */ |
| 1142 | switch (sym->type) { |
| 1143 | case S_BOOLEAN: |
| 1144 | case S_TRISTATE: |
| 1145 | if (sym_get_tristate_value(sym) == |
| 1146 | sym->def[S_DEF_AUTO].tri) |
| 1147 | continue; |
| 1148 | break; |
| 1149 | case S_STRING: |
| 1150 | case S_HEX: |
| 1151 | case S_INT: |
| 1152 | if (!strcmp(sym_get_string_value(sym), |
| 1153 | sym->def[S_DEF_AUTO].val)) |
| 1154 | continue; |
| 1155 | break; |
| 1156 | default: |
| 1157 | break; |
| 1158 | } |
| 1159 | } else { |
| 1160 | /* |
| 1161 | * If there is no old value, only 'no' (unset) |
| 1162 | * is allowed as new value. |
| 1163 | */ |
| 1164 | switch (sym->type) { |
| 1165 | case S_BOOLEAN: |
| 1166 | case S_TRISTATE: |
| 1167 | if (sym_get_tristate_value(sym) == no) |
| 1168 | continue; |
| 1169 | break; |
| 1170 | default: |
| 1171 | break; |
| 1172 | } |
| 1173 | } |
| 1174 | } else if (!(sym->flags & SYMBOL_DEF_AUTO)) |
| 1175 | /* There is neither an old nor a new value. */ |
| 1176 | continue; |
| 1177 | /* else |
| 1178 | * There is an old value, but no new value ('no' (unset) |
| 1179 | * isn't saved in auto.conf, so the old value is always |
| 1180 | * different from 'no'). |
| 1181 | */ |
| 1182 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1183 | res = conf_touch_dep(sym->name); |
| 1184 | if (res) |
| 1185 | return res; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1186 | } |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1187 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1188 | return 0; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1189 | } |
| 1190 | |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1191 | static int __conf_write_autoconf(const char *filename, |
| 1192 | void (*print_symbol)(FILE *, struct symbol *), |
| 1193 | const struct comment_style *comment_style) |
| 1194 | { |
| 1195 | char tmp[PATH_MAX]; |
| 1196 | FILE *file; |
| 1197 | struct symbol *sym; |
| 1198 | int ret, i; |
| 1199 | |
| 1200 | if (make_parent_dir(filename)) |
| 1201 | return -1; |
| 1202 | |
| 1203 | ret = snprintf(tmp, sizeof(tmp), "%s.tmp", filename); |
| 1204 | if (ret >= sizeof(tmp)) /* check truncation */ |
| 1205 | return -1; |
| 1206 | |
| 1207 | file = fopen(tmp, "w"); |
| 1208 | if (!file) { |
| 1209 | perror("fopen"); |
| 1210 | return -1; |
| 1211 | } |
| 1212 | |
| 1213 | conf_write_heading(file, comment_style); |
| 1214 | |
| 1215 | int print_negatives = getenv("KCONFIG_NEGATIVES") != NULL; |
| 1216 | for_all_symbols(i, sym) |
| 1217 | if (((sym->flags & SYMBOL_WRITE) || (print_negatives && sym->type != S_STRING)) && sym->name) |
| 1218 | print_symbol(file, sym); |
| 1219 | |
Patrick Georgi | 5526be2 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1220 | fflush(file); |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1221 | /* check possible errors in conf_write_heading() and print_symbol() */ |
Patrick Georgi | 7eb03cb | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1222 | ret = ferror(file); |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1223 | fclose(file); |
Patrick Georgi | 7eb03cb | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1224 | if (ret) |
| 1225 | return -1; |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1226 | |
| 1227 | if (rename(tmp, filename)) { |
| 1228 | perror("rename"); |
| 1229 | return -1; |
| 1230 | } |
| 1231 | |
| 1232 | return 0; |
| 1233 | } |
| 1234 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1235 | int conf_write_autoconf(int overwrite) |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1236 | { |
| 1237 | struct symbol *sym; |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1238 | const char *autoconf_name = conf_get_autoconfig_name(); |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1239 | int ret, i; |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 1240 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1241 | if (!overwrite && is_present(autoconf_name)) |
| 1242 | return 0; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1243 | |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1244 | ret = conf_write_autoconf_cmd(autoconf_name); |
| 1245 | if (ret) |
| 1246 | return -1; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1247 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1248 | if (conf_touch_deps()) |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1249 | return 1; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1250 | |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1251 | for_all_symbols(i, sym) |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1252 | sym_calc_value(sym); |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 1253 | |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1254 | ret = __conf_write_autoconf(conf_get_autoheader_name(), |
| 1255 | print_symbol_for_c, |
| 1256 | &comment_style_c); |
| 1257 | if (ret) |
| 1258 | return ret; |
Raul E Rangel | 7b2dedd | 2019-07-25 15:49:52 -0600 | [diff] [blame] | 1259 | |
Patrick Georgi | 7f93aa4 | 2023-11-20 17:58:40 +0100 | [diff] [blame] | 1260 | ret = __conf_write_autoconf(conf_get_rustccfg_name(), |
| 1261 | print_symbol_for_rustccfg, |
| 1262 | NULL); |
| 1263 | if (ret) |
| 1264 | return ret; |
| 1265 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1266 | /* |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1267 | * Create include/config/auto.conf. This must be the last step because |
| 1268 | * Kbuild has a dependency on auto.conf and this marks the successful |
| 1269 | * completion of the previous steps. |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1270 | */ |
Patrick Georgi | 4c9b9e9 | 2022-10-28 01:00:26 +0200 | [diff] [blame] | 1271 | ret = __conf_write_autoconf(conf_get_autoconfig_name(), |
| 1272 | print_symbol_for_autoconf, |
| 1273 | &comment_style_pound); |
| 1274 | if (ret) |
| 1275 | return ret; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1276 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1277 | return 0; |
| 1278 | } |
| 1279 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1280 | static bool conf_changed; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1281 | static void (*conf_changed_callback)(void); |
| 1282 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1283 | void conf_set_changed(bool val) |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1284 | { |
Patrick Georgi | 54cec70 | 2023-11-20 18:07:18 +0100 | [diff] [blame] | 1285 | bool changed = conf_changed != val; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1286 | |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1287 | conf_changed = val; |
Patrick Georgi | 54cec70 | 2023-11-20 18:07:18 +0100 | [diff] [blame] | 1288 | |
| 1289 | if (conf_changed_callback && changed) |
| 1290 | conf_changed_callback(); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1291 | } |
| 1292 | |
| 1293 | bool conf_get_changed(void) |
| 1294 | { |
Patrick Georgi | 53ea1d4 | 2019-11-22 16:55:58 +0100 | [diff] [blame] | 1295 | return conf_changed; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 1296 | } |
| 1297 | |
| 1298 | void conf_set_changed_callback(void (*fn)(void)) |
| 1299 | { |
| 1300 | conf_changed_callback = fn; |
| 1301 | } |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 1302 | |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 1303 | void set_all_choice_values(struct symbol *csym) |
| 1304 | { |
| 1305 | struct property *prop; |
| 1306 | struct symbol *sym; |
| 1307 | struct expr *e; |
| 1308 | |
| 1309 | prop = sym_get_choice_prop(csym); |
| 1310 | |
| 1311 | /* |
| 1312 | * Set all non-assinged choice values to no |
| 1313 | */ |
| 1314 | expr_list_for_each_sym(prop->expr, e, sym) { |
| 1315 | if (!sym_has_value(sym)) |
| 1316 | sym->def[S_DEF_USER].tri = no; |
| 1317 | } |
| 1318 | csym->flags |= SYMBOL_DEF_USER; |
| 1319 | /* clear VALID to get value calculated */ |
| 1320 | csym->flags &= ~(SYMBOL_VALID | SYMBOL_NEED_SET_CHOICE_VALUES); |
| 1321 | } |