posix/annexc.c

   1 /* Copyright (C) 1998-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <ctype.h>
  19 #include <fnmatch.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <unistd.h>
  24 #include <signal.h>
  25 #include <sys/wait.h>
  26
  27 #define HEADER_MAX          256
  28
  29 static const char *macrofile;
  30
  31 /* <aio.h>.  */
  32 static const char *const aio_syms[] =
  33 {
  34   "AIO_ALLDONE", "AIO_CANCELED", "AIO_NOTCANCELED", "LIO_NOP", "LIO_NOWAIT",
  35   "LIO_READ", "LIO_WAIT", "LIO_WRITE",
  36   /* From <fcntl.h>.  */
  37   "FD_CLOEXEC", "F_DUPFD", "F_GETFD", "F_GETFL", "F_GETLK", "F_RDLCK",
  38   "F_SETFD", "F_SETFL", "F_SETLK", "F_SETLKW", "F_UNLCK", "F_WRLCK",
  39   "O_ACCMODE", "O_APPEND", "O_CREAT", "O_DSYNC", "O_EXCL", "O_NOCTTY",
  40   "O_NONBLOCK", "O_RDONLY", "O_RDWR", "O_RSYNC", "O_SYNC", "O_TRUNC",
  41   "O_WRONLY",
  42   /* From <signal.h>.  */
  43   "SA_NOCLDSTOP", "SA_SIGINFO", "SIGABRT", "SIGALRM", "SIGBUS", "SIGCHLD",
  44   "SIGCONT", "SIGEV_NONE", "SIGEV_SIGNAL", "SIGEV_SIGNAL", "SIGEV_THREAD",
  45   "SIGFPE", "SIGHUP", "SIGILL", "SIGINT", "SIGKILL", "SIGPIPE", "SIGQUIT",
  46   "SIGRTMAX", "SIGRTMIN", "SIGSEGV", "SIGSTOP", "SIGTERM", "SIGTSTP",
  47   "SIGTTIN", "SIGTTOU", "SIGUSR1", "SIGUSR2", "SIG_BLOCK", "SIG_DFL",
  48   "SIG_ERR", "SIG_IGN", "SIG_SETMASK", "SIG_UNBLOCK", "SI_ASYNCIO",
  49   "SI_MESGQ", "SI_QUEUE", "SI_TIMER", "SI_USER"
  50 };
  51 static const char *const aio_maybe[] =
  52 {
  53   "aio_cancel", "aio_error", "aio_fsync", "aio_read", "aio_return",
  54   "aio_suspend", "aio_write", "lio_listio",
  55   /* From <fcntl.h>.  */
  56   "creat", "fcntl", "open", "SEEK_CUR", "SEEK_END", "SEEK_SET", "S_IRGRP",
  57   "S_IROTH", "S_IRUSR", "S_IRWXG", "S_IRWXO", "S_IRWXU", "S_ISBLK",
  58   "S_ISCHR", "S_ISDIR", "S_ISFIFO", "S_ISGID", "S_ISREG", "S_ISUID",
  59   "S_IWGRP", "S_IWOTH", "S_IWUSR", "S_IXGRP", "S_IXOTH", "S_IXUSR",
  60   /* From <signal.h>.  */
  61   "kill", "raise", "sigaction", "sigaddset", "sigdelset", "sigemptyset",
  62   "sigfillset", "sigismember", "signal", "sigpending", "sigprocmask",
  63   "sigqueue", "sigsuspend", "sigtimedwait", "sigwait", "sigwaitinfo"
  64 };
  65
  66 /* <assert.h>.  */
  67 static const char *const assert_syms[] =
  68 {
  69   "assert"
  70 };
  71 static const char *const assert_maybe[] =
  72 {
  73 };
  74
  75 /* <ctype.h>.   */
  76 static const char *const ctype_syms[] =
  77 {
  78 };
  79 static const char *const ctype_maybe[] =
  80 {
  81   "isalnum", "isalpha", "iscntrl", "isdigit", "isgraph", "islower",
  82   "isprint", "ispunct", "isspace", "isupper", "isxdigit", "tolower",
  83   "toupper"
  84 };
  85
  86 /* <dirent.h>.  */
  87 static const char *const dirent_syms[] =
  88 {
  89 };
  90 static const char *const dirent_maybe[] =
  91 {
  92   "closedir", "opendir", "readdir", "readdir_r", "rewinddir"
  93 };
  94
  95 /* <errno.h>.  */
  96 static const char *const errno_syms[] =
  97 {
  98   "E2BIG", "EACCES", "EAGAIN", "EBADF", "EBADMSG", "EBUSY", "ECANCELED",
  99   "ECHILD", "EDEADLK", "EDOM", "EEXIST", "EFAULT", "EFBIG", "EINPROGRESS",
 100   "EINTR", "EINVAL", "EIO", "EISDIR", "EMFILE", "EMLINK", "EMSGSIZE",
 101   "ENAMETOOLONG", "ENFILE", "ENODEV", "ENOENT", "ENOEXEC", "ENOLCK",
 102   "ENOMEM", "ENOSPC", "ENOSYS", "ENOTDIR", "ENOTEMPTY", "ENOTSUP",
 103   "ENOTTY", "ENXIO", "EPERM", "EPIPE", "ERANGE", "EROFS", "ESPIPE",
 104   "ESRCH", "ETIMEDOUT", "EXDEV"
 105 };
 106 static const char *const errno_maybe[] =
 107 {
 108   "errno", "E*"
 109 };
 110
 111 /* <fcntl.h>.  */
 112 static const char *const fcntl_syms[] =
 113 {
 114   "FD_CLOEXEC", "F_DUPFD", "F_GETFD", "F_GETFL", "F_GETLK", "F_RDLCK",
 115   "F_SETFD", "F_SETFL", "F_SETLK", "F_SETLKW", "F_UNLCK", "F_WRLCK",
 116   "O_ACCMODE", "O_APPEND", "O_CREAT", "O_DSYNC", "O_EXCL", "O_NOCTTY",
 117   "O_NONBLOCK", "O_RDONLY", "O_RDWR", "O_RSYNC", "O_SYNC", "O_TRUNC",
 118   "O_WRONLY"
 119 };
 120 static const char *const fcntl_maybe[] =
 121 {
 122   "creat", "fcntl", "open", "SEEK_CUR", "SEEK_END", "SEEK_SET", "S_IRGRP",
 123   "S_IROTH", "S_IRUSR", "S_IRWXG", "S_IRWXO", "S_IRWXU", "S_ISBLK",
 124   "S_ISCHR", "S_ISDIR", "S_ISFIFO", "S_ISGID", "S_ISREG", "S_ISUID",
 125   "S_IWGRP", "S_IWOTH", "S_IWUSR", "S_IXGRP", "S_IXOTH", "S_IXUSR"
 126 };
 127
 128 /* <float.h>.  */
 129 static const char *const float_syms[] =
 130 {
 131   "DBL_DIG", "DBL_EPSILON", "DBL_MANT_DIG", "DBL_MAX", "DBL_MAX_10_EXP",
 132   "DBL_MAX_EXP", "DBL_MIN", "DBL_MIN_10_EXP", "DBL_MIN_EXP", "FLT_DIG",
 133   "FLT_EPSILON", "FLT_MANT_DIG", "FLT_MAX", "FLT_MAX_10_EXP", "FLT_MAX_EXP",
 134   "FLT_MIN", "FLT_MIN_10_EXP", "FLT_MIN_EXP", "FLT_RADIX", "FLT_ROUNDS",
 135   "LDBL_DIG", "LDBL_EPSILON", "LDBL_MANT_DIG", "LDBL_MAX", "LDBL_MAX_10_EXP",
 136   "LDBL_MAX_EXP", "LDBL_MIN", "LDBL_MIN_10_EXP", "LDBL_MIN_EXP"
 137 };
 138 static const char *const float_maybe[] =
 139 {
 140 };
 141
 142 /* <grp.h>.  */
 143 static const char *const grp_syms[] =
 144 {
 145 };
 146 static const char *const grp_maybe[] =
 147 {
 148   "getgrgid", "getgrgid_r", "getgrnam", "getgrnam_r"
 149 };
 150
 151 /* <limits.h>.  */
 152 static const char *const limits_syms[] =
 153 {
 154   "_POSIX_AIO_LISTIO_MAX", "_POSIX_AIO_MAX", "_POSIX_ARG_MAX",
 155   "_POSIX_CHILD_MAX", "_POSIX_CLOCKRES_MAX", "_POSIX_DELAYTIMER_MAX",
 156   "_POSIX_LINK_MAX", "_POSIX_LOGIN_NAME_MAX", "_POSIX_MAX_CANON",
 157   "_POSIX_MAX_INPUT", "_POSIX_MQ_OPEN_MAX", "_POSIX_MQ_PRIO_MAX",
 158   "_POSIX_NAME_MAX", "_POSIX_NGROUPS_MAX", "_POSIX_OPEN_MAX",
 159   "_POSIX_PATH_MAX", "_POSIX_PIPE_BUF", "_POSIX_RTSIG_MAX",
 160   "_POSIX_SEM_NSEMS_MAX", "_POSIX_SEM_VALUE_MAX", "_POSIX_SIGQUEUE_MAX",
 161   "_POSIX_SSIZE_MAX", "_POSIX_STREAM_MAX",
 162   "_POSIX_THREAD_DESTRUCTOR_ITERATIONS", "_POSIX_THREAD_KEYS_MAX",
 163   "_POSIX_THREAD_THREADS_MAX", "_POSIX_TIMER_MAX", "_POSIX_TTY_NAME_MAX",
 164   "_POSIX_TZNAME_MAX", "_POSIX_THREAD_DESTRUCTOR_ITERATIONS",
 165   "CHAR_BIT", "CHAR_MAX", "CHAR_MIN", "INT_MAX", "INT_MIN", "LONG_MAX",
 166   "LONG_MIN", "MB_LEN_MAX", "NGROUPS_MAX", "PAGESIZE", "SCHAR_MAX",
 167   "SCHAR_MIN", "SHRT_MAX", "SHRT_MIN", "UCHAR_MAX", "UINT_MAX",
 168   "ULONG_MAX", "USHRT_MAX"
 169 };
 170 static const char *const limits_maybe[] =
 171 {
 172   "AIO_LISTIO_MAX", "AIO_MAX", "ARG_MAX", "CHILD_MAX", "DELAYTIMER_MAX",
 173   "LINK_MAX", "LOGIN_NAME_MAX", "LONG_MAX", "LONG_MIN", "MAX_CANON",
 174   "MAX_INPUT", "MQ_OPEN_MAX", "MQ_PRIO_MAX", "NAME_MAX", "OPEN_MAX",
 175   "PATH_MAX", "PIPE_BUF", "RTSIG_MAX", "PTHREAD_DESTRUCTOR_ITERATIONS",
 176   "PTHREAD_KEYS_MAX", "PTHREAD_STACK_MIN", "PTHREAD_THREADS_MAX"
 177 };
 178
 179 /* <locale.h>.  */
 180 static const char *const locale_syms[] =
 181 {
 182   "LC_ALL", "LC_COLLATE", "LC_CTYPE", "LC_MONETARY", "LC_NUMERIC",
 183   "LC_TIME", "NULL"
 184 };
 185 static const char *const locale_maybe[] =
 186 {
 187   "LC_*", "localeconv", "setlocale"
 188 };
 189
 190 /* <math.h>.  */
 191 static const char *const math_syms[] =
 192 {
 193   "HUGE_VAL"
 194 };
 195 static const char *const math_maybe[] =
 196 {
 197   "acos", "asin", "atan2", "atan", "ceil", "cos", "cosh", "exp",
 198   "fabs", "floor", "fmod", "frexp", "ldexp", "log10", "log", "modf",
 199   "pow", "sin", "sinh", "sqrt", "tan", "tanh",
 200   "acosf", "asinf", "atan2f", "atanf", "ceilf", "cosf", "coshf", "expf",
 201   "fabsf", "floorf", "fmodf", "frexpf", "ldexpf", "log10f", "logf", "modff",
 202   "powf", "sinf", "sinhf", "sqrtf", "tanf", "tanhf",
 203   "acosl", "asinl", "atan2l", "atanl", "ceill", "cosl", "coshl", "expl",
 204   "fabsl", "floorl", "fmodl", "frexpl", "ldexpl", "log10l", "logl", "modfl",
 205   "powl", "sinl", "sinhl", "sqrtl", "tanl", "tanhl"
 206 };
 207
 208 /* <mqueue.h>.  */
 209 static const char *const mqueue_syms[] =
 210 {
 211 };
 212 static const char *const mqueue_maybe[] =
 213 {
 214   "mq_close", "mq_getattr", "mq_notify", "mq_open", "mq_receive",
 215   "mq_send", "mq_setattr", "mq_unlink"
 216 };
 217
 218 /* <pthread.h>.  */
 219 static const char *const pthread_syms[] =
 220 {
 221   "PTHREAD_CANCELED", "PTHREAD_CANCEL_ASYNCHRONOUS",
 222   "PTHREAD_CANCEL_DEFERRED", "PTHREAD_CANCEL_DISABLE", "PTHREAD_CANCEL_ENABLE",
 223   "PTHREAD_COND_INITIALIZER", "PTHREAD_CREATE_DETACHED",
 224   "PTHREAD_CREATE_JOINABLE", "PTHREAD_EXPLICIT_SCHED",
 225   "PTHREAD_INHERIT_SCHED", "PTHREAD_MUTEX_INITIALIZER",
 226   "PTHREAD_ONCE_INIT", "PTHREAD_PRIO_INHERIT", "PTHREAD_PRIO_NONE",
 227   "PTHREAD_PRIO_PROTECT", "PTHREAD_PROCESS_PRIVATE",
 228   "PTHREAD_PROCESS_SHARED", "PTHREAD_SCOPE_PROCESS", "PTHREAD_SCOPE_SYSTEM",
 229   /* These come from <sched.h>.  */
 230   "SCHED_FIFO", "SCHED_OTHER", "SCHED_RR",
 231   /* These come from <time.h>.  */
 232   "CLK_TCK", "CLOCKS_PER_SEC", "CLOCK_REALTIME", "NULL", "TIMER_ABSTIME"
 233 };
 234 static const char *const pthread_maybe[] =
 235 {
 236   "pthread_atfork", "pthread_attr_destroy", "pthread_attr_getdetachstate",
 237   "pthread_attr_getinheritsched", "pthread_attr_getschedparam",
 238   "pthread_attr_getschedpolicy", "pthread_attr_getscope",
 239   "pthread_attr_getstackaddr", "pthread_attr_getstacksize",
 240   "pthread_attr_init", "pthread_attr_setdetachstate",
 241   "pthread_attr_setinheritsched", "pthread_attr_setschedparam",
 242   "pthread_attr_setschedpolicy", "pthread_attr_setscope",
 243   "pthread_attr_setstackaddr", "pthread_attr_setstacksize",
 244   "pthread_cleanup_pop", "pthread_cleanup_push", "pthread_cond_broadcast",
 245   "pthread_cond_destroy", "pthread_cond_init", "pthread_cond_signal",
 246   "pthread_cond_timedwait", "pthread_cond_wait", "pthread_condattr_destroy",
 247   "pthread_condattr_getpshared", "pthread_condattr_init",
 248   "pthread_condattr_setpshared", "pthread_create", "pthread_detach",
 249   "pthread_equal", "pthread_exit", "pthread_getspecific", "pthread_join",
 250   "pthread_key_create", "pthread_key_destroy", "pthread_kill",
 251   "pthread_mutex_destroy", "pthread_mutex_getprioceiling",
 252   "pthread_mutex_init", "pthread_mutex_lock", "pthread_mutex_setprioceiling",
 253   "pthread_mutex_trylock", "pthread_mutex_unlock", "pthread_mutexattr_destroy",
 254   "pthread_mutexattr_getprioceiling", "pthread_mutexattr_getprotocol",
 255   "pthread_mutexattr_getpshared", "pthread_mutexattr_init",
 256   "pthread_mutexattr_setprioceiling", "pthread_mutexattr_setprotocol",
 257   "pthread_mutexattr_setpshared", "pthread_once", "pthread_self",
 258   "pthread_setcancelstate", "pthread_setcanceltype", "pthread_setspecific",
 259   "pthread_sigmask", "pthread_testcancel"
 260   /* These come from <sched.h>.  */
 261   "sched_get_priority_max", "sched_get_priority_min",
 262   "sched_get_rr_interval", "sched_getparam", "sched_getscheduler",
 263   "sched_setparam", "sched_setscheduler", "sched_yield",
 264   /* These come from <time.h>.  */
 265   "asctime", "asctime_r", "clock", "clock_getres", "clock_gettime",
 266   "clock_settime", "ctime", "ctime_r", "difftime", "gmtime", "gmtime_r",
 267   "localtime", "localtime_r", "mktime", "nanosleep", "strftime", "time",
 268   "timer_create", "timer_delete", "timer_getoverrun", "timer_gettime",
 269   "timer_settime", "tzset"
 270 };
 271
 272 /* <pwd.h>.  */
 273 static const char *const pwd_syms[] =
 274 {
 275 };
 276 static const char *const pwd_maybe[] =
 277 {
 278   "getpwnam", "getpwnam_r", "getpwuid", "getpwuid_r"
 279 };
 280
 281 /* <sched.h>.  */
 282 static const char *const sched_syms[] =
 283 {
 284   "SCHED_FIFO", "SCHED_OTHER", "SCHED_RR",
 285 };
 286 static const char *const sched_maybe[] =
 287 {
 288   "sched_get_priority_max", "sched_get_priority_min",
 289   "sched_get_rr_interval", "sched_getparam", "sched_getscheduler",
 290   "sched_setparam", "sched_setscheduler", "sched_yield",
 291   /* These come from <time.h>.  */
 292   "CLK_TCK", "CLOCKS_PER_SEC", "CLOCK_REALTIME", "NULL", "TIMER_ABSTIME"
 293   "asctime", "asctime_r", "clock", "clock_getres", "clock_gettime",
 294   "clock_settime", "ctime", "ctime_r", "difftime", "gmtime", "gmtime_r",
 295   "localtime", "localtime_r", "mktime", "nanosleep", "strftime", "time",
 296   "timer_create", "timer_delete", "timer_getoverrun", "timer_gettime",
 297   "timer_settime", "tzset"
 298 };
 299
 300 /* <semaphore.h>.  */
 301 static const char *const semaphore_syms[] =
 302 {
 303 };
 304 static const char *const semaphore_maybe[] =
 305 {
 306   "sem_close", "sem_destroy", "sem_getvalue", "sem_init", "sem_open",
 307   "sen_post", "sem_trywait", "sem_unlink", "sem_wait"
 308 };
 309
 310 /* <setjmp.h>.  */
 311 static const char *const setjmp_syms[] =
 312 {
 313 };
 314 static const char *const setjmp_maybe[] =
 315 {
 316   "longjmp", "setjmp", "siglongjmp", "sigsetjmp"
 317 };
 318
 319 /* <signal.h>.  */
 320 static const char *const signal_syms[] =
 321 {
 322   "SA_NOCLDSTOP", "SA_SIGINFO", "SIGABRT", "SIGALRM", "SIGBUS", "SIGCHLD",
 323   "SIGCONT", "SIGEV_NONE", "SIGEV_SIGNAL", "SIGEV_THREAD",
 324   "SIGFPE", "SIGHUP", "SIGILL", "SIGINT", "SIGKILL", "SIGPIPE", "SIGQUIT",
 325   "SIGRTMAX", "SIGRTMIN", "SIGSEGV", "SIGSTOP", "SIGTERM", "SIGTSTP",
 326   "SIGTTIN", "SIGTTOU", "SIGUSR1", "SIGUSR2", "SIG_BLOCK", "SIG_DFL",
 327   "SIG_ERR", "SIG_IGN", "SIG_SETMASK", "SIG_UNBLOCK", "SI_ASYNCIO",
 328   "SI_MESGQ", "SI_QUEUE", "SI_TIMER", "SI_USER"
 329 };
 330 static const char *const signal_maybe[] =
 331 {
 332   "kill", "raise", "sigaction", "sigaddset", "sigdelset", "sigemptyset",
 333   "sigfillset", "sigismember", "signal", "sigpending", "sigprocmask",
 334   "sigqueue", "sigsuspend", "sigtimedwait", "sigwait", "sigwaitinfo"
 335 };
 336
 337 /* <stdarg.h>.  */
 338 static const char *const stdarg_syms[] =
 339 {
 340   "va_arg", "va_end", "va_start"
 341 };
 342 static const char *const stdarg_maybe[] =
 343 {
 344   "va_list"
 345 };
 346
 347 /* <stddef.h>.  */
 348 static const char *const stddef_syms[] =
 349 {
 350   "NULL", "offsetof"
 351 };
 352 static const char *const stddef_maybe[] =
 353 {
 354 };
 355
 356 /* <stdio.h>.  */
 357 static const char *const stdio_syms[] =
 358 {
 359   "BUFSIZ", "EOF", "FILENAME_MAX", "FOPEN_MAX", "L_ctermid", "L_cuserid",
 360   "L_tmpnam", "NULL", "SEEK_CUR", "SEEK_END", "SEEK_SET", "STREAM_MAX",
 361   "TMP_MAX", "stderr", "stdin", "stdout", "_IOFBF", "_IOLBF", "_IONBF"
 362 };
 363 static const char *const stdio_maybe[] =
 364 {
 365   "clearerr", "fclose", "fdopen", "feof", "ferror", "fflush", "fgetc",
 366   "fgetpos", "fgets", "fileno", "flockfile", "fopen", "fprintf", "fputc",
 367   "fputs", "fread", "freopen", "fscanf", "fseek", "fsetpos", "ftell",
 368   "ftrylockfile", "funlockfile", "fwrite", "getc", "getchar",
 369   "getchar_unlocked", "getc_unlocked", "gets", "perror", "printf", "putc",
 370   "putchar", "putchar_unlocked", "putc_unlocked", "puts", "remove", "rename",
 371   "rewind", "scanf", "setbuf", "setvbuf", "sprintf", "sscanf", "tmpfile",
 372   "tmpnam", "ungetc", "vfprintf", "vprintf", "vsprintf"
 373 };
 374
 375 /* <stdlib.h>.  */
 376 static const char *const stdlib_syms[] =
 377 {
 378   "EXIT_FAILURE", "EXIT_SUCCESS", "MB_CUR_MAX", "NULL", "RAND_MAX"
 379 };
 380 static const char *const stdlib_maybe[] =
 381 {
 382   "abort", "abs", "atexit", "atof", "atoi", "atol", "bsearch", "calloc",
 383   "div", "exit", "free", "getenv", "labs", "ldiv", "malloc", "mblen",
 384   "mbstowcs", "mbtowc", "qsort", "rand", "rand_r", "realloc", "srand",
 385   "strtod", "strtol", "strtoul", "system", "wcstombs", "wctomb"
 386 };
 387
 388 /* <string.h>.  */
 389 static const char *const string_syms[] =
 390 {
 391   "NULL"
 392 };
 393 static const char *const string_maybe[] =
 394 {
 395   "memchr", "memcmp", "memcpy", "memmove", "memset", "strcat", "strchr",
 396   "strcmp", "strcoll", "strcpy", "strcspn", "strerror", "strlen",
 397   "strncat", "strncmp", "strncpy", "strpbrk", "strrchr", "strspn",
 398   "strstr", "strtok", "strtok_r", "strxfrm"
 399 };
 400
 401 /* <sys/mman.h>.  */
 402 static const char *const mman_syms[] =
 403 {
 404   "MAP_FAILED", "MAP_FIXED", "MAP_PRIVATE", "MAP_SHARED", "MCL_CURRENT",
 405   "MCL_FUTURE", "MS_ASYNC", "MS_INVALIDATE", "MS_SYNC", "PROT_EXEC",
 406   "PROT_NONE", "PROT_READ", "PROT_WRITE"
 407 };
 408 static const char *const mman_maybe[] =
 409 {
 410   "mlock", "mlockall", "mmap", "mprotect", "msync", "munlock", "munlockall",
 411   "munmap", "shm_open", "shm_unlock"
 412 };
 413
 414 /* <sys/stat.h>.  */
 415 static const char *const stat_syms[] =
 416 {
 417   "S_IRGRP", "S_IROTH", "S_IRUSR", "S_IRWXG", "S_IRWXO", "S_IRWXU",
 418   "S_ISBLK", "S_ISCHR", "S_ISDIR", "S_ISFIFO", "S_ISGID", "S_ISREG",
 419   "S_ISUID", "S_IWGRP", "S_IWOTH", "S_IWUSR", "S_IXGRP", "S_IXOTH",
 420   "S_IXUSR", "S_TYPEISMQ", "S_TYPEISSEM", "S_TYPEISSHM"
 421 };
 422 static const char *const stat_maybe[] =
 423 {
 424   "chmod", "fchmod", "fstat", "mkdir", "mkfifo", "stat", "umask"
 425 };
 426
 427 /* <sys/times.h>.  */
 428 static const char *const times_syms[] =
 429 {
 430 };
 431 static const char *const times_maybe[] =
 432 {
 433   "times"
 434 };
 435
 436 /* <sys/types.h>.  */
 437 static const char *const types_syms[] =
 438 {
 439 };
 440 static const char *const types_maybe[] =
 441 {
 442 };
 443
 444 /* <sys/utsname.h>.  */
 445 static const char *const utsname_syms[] =
 446 {
 447 };
 448 static const char *const utsname_maybe[] =
 449 {
 450   "uname"
 451 };
 452
 453 /* <sys/wait.h>.  */
 454 static const char *const wait_syms[] =
 455 {
 456   "WEXITSTATUS", "WIFEXITED", "WIFSIGNALED", "WIFSTOPPED", "WNOHANG",
 457   "WSTOPSIG", "WTERMSIG", "WUNTRACED"
 458 };
 459 static const char *const wait_maybe[] =
 460 {
 461   "wait", "waitpid"
 462 };
 463
 464 /* <termios.h>.  */
 465 static const char *const termios_syms[] =
 466 {
 467   "B0", "B110", "B1200", "B134", "B150", "B1800", "B19200", "B200", "B2400",
 468   "B300", "B38400", "B4800", "B50", "B600", "B75", "B9600", "BRKINT", "CLOCAL",
 469   "CREAD", "CS5", "CS6", "CS7", "CS8", "CSIZE", "CSTOPN", "ECHO", "ECHOE",
 470   "ECHOK", "ECHONL", "HUPCL", "ICANON", "ICRNL", "IEXTEN", "IGNBRK", "IGNCR",
 471   "IGNPAR", "INCLR", "INPCK", "ISIG", "ISTRIP", "IXOFF", "IXON", "NCCS",
 472   "NOFLSH", "OPOST", "PARENB", "PARMRK", "PARODD", "TCIFLUSH", "TCIOFF",
 473   "TCIOFLUSH", "TCOFLUSH", "TCOOFF", "TCOON", "TCSADRAIN", "TCSAFLUSH",
 474   "TCSANOW", "TOSTOP", "VEOF", "VEOL", "VERASE", "VINTR", "VKILL", "VMIN",
 475   "VQUIT", "VSTART", "VSTOP", "VSUSP", "VTIME"
 476 };
 477 static const char *const termios_maybe[] =
 478 {
 479   "cfgetispeed", "cfgetospeed", "cfsetispeed", "cfsetospeed", "tcdrain",
 480   "tcflow", "tcflush", "tcgetattr", "tcsendbrk", "tcsetattr"
 481 };
 482
 483 /* <time.h>.  */
 484 static const char *const time_syms[] =
 485 {
 486   "CLK_TCK", "CLOCKS_PER_SEC", "CLOCK_REALTIME", "NULL", "TIMER_ABSTIME"
 487 };
 488 static const char *const time_maybe[] =
 489 {
 490   "asctime", "asctime_r", "clock", "clock_getres", "clock_gettime",
 491   "clock_settime", "ctime", "ctime_r", "difftime", "gmtime", "gmtime_r",
 492   "localtime", "localtime_r", "mktime", "nanosleep", "strftime", "time",
 493   "timer_create", "timer_delete", "timer_getoverrun", "timer_gettime",
 494   "timer_settime", "tzset"
 495 };
 496
 497 /* <unistd.h>.  */
 498 static const char *const unistd_syms[] =
 499 {
 500   "F_OK", "NULL", "R_OK", "SEEK_CUR", "SEEK_END", "SEEK_SET", "STDERR_FILENO",
 501   "STDIN_FILENO", "STDOUT_FILENO", "W_OK", "X_OK",
 502   "_PC_ASYNC_IO", "_PC_CHOWN_RESTRICTED", "_PC_LINK_MAX", "_PC_MAX_CANON",
 503   "_PC_MAX_INPUT", "_PC_NAME_MAX", "_PC_NO_TRUNC", "_PC_PATH_MAX",
 504   "_PC_PIPE_BUF", "_PC_PRIO_IO", "_PC_SYNC_IO", "_PC_VDISABLE",
 505   "_SC_AIO_LISTIO_MAX", "_SC_AIO_MAX", "_SC_AIO_PRIO_DELTA_MAX",
 506   "_SC_ARG_MAX", "_SC_ASYNCHRONOUS_IO", "_SC_CHILD_MAX", "_SC_CLK_TCK",
 507   "_SC_DELAYTIMER_MAX", "_SC_FSYNC", "_SC_GETGR_R_SIZE_MAX",
 508   "_SC_GETPW_R_SIZE_MAX", "_SC_JOB_CONTROL", "_SC_LOGIN_NAME_MAX",
 509   "_SC_MAPPED_FILES", "_SC_MEMLOCK", "_SC_MEMLOCK_RANGE",
 510   "_SC_MEMORY_PROTECTION", "_SC_MESSAGE_PASSING", "_SC_MQ_OPEN_MAX",
 511   "_SC_MQ_PRIO_MAX", "_SC_NGROUPS_MAX", "_SC_OPEN_MAX", "_SC_PAGESIZE",
 512   "_SC_PRIORITIZED_IO", "_SC_PRIORITY_SCHEDULING", "_SC_REALTIME_SIGNALS",
 513   "_SC_RTSIG_MAX", "_SC_SAVED_IDS", "_SC_SEMAPHORES", "_SC_SEM_NSEMS_MAX",
 514   "_SC_SEM_VALUE_MAX", "_SC_SHARED_MEMORY_OBJECTS", "_SC_SIGQUEUE_MAX",
 515   "_SC_STREAM_MAX", "_SC_SYNCHRONIZED_IO", "_SC_THREADS",
 516   "_SC_THREAD_ATTR_STACKADDR", "_SC_THREAD_ATTR_STACKSIZE",
 517   "_SC_THREAD_DESTRUCTOR_ITERATIONS", "_SC_THREAD_PRIO_INHERIT",
 518   "_SC_THREAD_PRIORITY_SCHEDULING", "_SC_THREAD_PRIO_PROTECT",
 519   "_SC_THREAD_PROCESS_SHARED", "_SC_THREAD_SAFE_FUNCTIONS",
 520   "_SC_THREAD_STACK_MIN", "_SC_THREAD_THREADS_MAX", "_SC_TIMERS",
 521   "_SC_TIMER_MAX", "_SC_TTY_NAME_MAX", "_SC_TZNAME_MAX", "_SC_VERSION"
 522 };
 523 static const char *const unistd_maybe[] =
 524 {
 525   "_POSIX_ASYNCHRONOUS_IO", "_POSIX_ASYNC_IO", "_POSIX_CHOWN_RESTRICTED",
 526   "_POSIX_FSYNC", "_POSIX_JOB_CONTROL", "_POSIX_MAPPED_FILES",
 527   "_POSIX_MEMLOCK", "_POSIX_MEMLOCK_RANGE", "_MEMORY_PROTECTION",
 528   "_POSIX_MESSAGE_PASSING", "_POSIX_NO_TRUNC", "_POSIX_PRIORITIZED_IO",
 529   "_POSIX_PRIORITY_SCHEDULING", "_POSIX_PRIO_IO", "_POSIX_REATIME_SIGNALS",
 530   "_POSIX_SAVED_IDS", "_POSIX_SEMAPHORES", "_POSIX_SHARED_MEMORY_OBJECTS",
 531   "_POSIX_SYNCHRONIZED_IO", "_POSIX_SYNC_IO", "_POSIX_THREADS",
 532   "_POSIX_THREAD_ATTR_STACKADDR", "_POSIX_THREAD_ATTR_STACKSIZE",
 533   "_POSIX_THREAD_PRIO_INHERIT", "_POSIX_THREAD_PRIO_PROTECT",
 534   "_POSIX_THREAD_PROCESS_SHARED", "_POSIX_THREAD_SAFE_FUNCTIONS",
 535   "_POSIX_THREAD_PRIORITY_SCHEDULING", "_POSIX_TIMERS",
 536   "_POSIX_VDISABLE", "_POSIX_VERSION",
 537   "_exit", "access", "alarm", "chdir", "chown", "close", "ctermid", "cuserid",
 538   "dup2", "dup", "execl", "execle", "execlp", "execv", "execve", "execvp",
 539   "fdatasync", "fork", "fpathconf", "fsync", "ftruncate", "getcwd", "getegid",
 540   "geteuid", "getgid", "getgroups", "getlogin", "getlogin_r", "getpgrp",
 541   "getpid", "getppid", "getuid", "isatty", "link", "lseek", "pathconf",
 542   "pause", "pipe", "read", "rmdir", "setgid", "setgpid", "setsid", "setuid",
 543   "sleep", "sleep", "sysconf", "tcgetpgrp", "tcsetpgrp", "ttyname",
 544   "ttyname_r", "unlink", "write"
 545 };
 546
 547 /* <utime.h>.  */
 548 static const char *const utime_syms[] =
 549 {
 550 };
 551 static const char *const utime_maybe[] =
 552 {
 553   "utime"
 554 };
 555
 556
 557 static struct header
 558 {
 559   const char *name;
 560   const char *const *syms;
 561   size_t nsyms;
 562   const char *const *maybe;
 563   size_t nmaybe;
 564   const char *subset;
 565 } headers[] =
 566 {
 567 #define H(n) \
 568   { #n ".h", n##_syms, sizeof (n##_syms) / sizeof (n##_syms[0]), \
 569     n##_maybe, sizeof (n##_maybe) / sizeof (n##_maybe[0]), NULL }
 570 #define Hc(n, s) \
 571   { #n ".h", n##_syms, sizeof (n##_syms) / sizeof (n##_syms[0]), \
 572     n##_maybe, sizeof (n##_maybe) / sizeof (n##_maybe[0]), s }
 573 #define Hs(n) \
 574   { "sys/" #n ".h", n##_syms, sizeof (n##_syms) / sizeof (n##_syms[0]), \
 575     n##_maybe, sizeof (n##_maybe) / sizeof (n##_maybe[0]), NULL }
 576   H(aio),
 577   H(assert),
 578   H(ctype),
 579   H(dirent),
 580   H(errno),
 581   H(fcntl),
 582   H(float),
 583   H(grp),
 584   H(limits),
 585   H(locale),
 586   H(math),
 587   Hc(mqueue, "_POSIX_MESSAGE_PASSING"),
 588   H(pthread),
 589   H(pwd),
 590   H(sched),
 591   H(semaphore),
 592   H(setjmp),
 593   H(signal),
 594   H(stdarg),
 595   H(stddef),
 596   H(stdio),
 597   H(stdlib),
 598   H(string),
 599   Hs(mman),
 600   Hs(stat),
 601   Hs(times),
 602   Hs(types),
 603   Hs(utsname),
 604   Hs(wait),
 605   H(termios),
 606   H(time),
 607   H(unistd),
 608   H(utime)
 609 };
 610
 611 #define NUMBER_OF_HEADERS              (sizeof headers / sizeof *headers)
 612
 613
 614 /* Format string to build command to invoke compiler.  */
 615 static const char fmt[] = "\
 616 echo \"#include <%s>\" |\
 617 %s -E -dM -D_POSIX_SOURCE %s \
 618 -isystem `%s --print-prog-name=include` - > %s";
 619
 620 static const char testfmt[] = "\
 621 echo \"#include <unistd.h>\n#if !defined %s || %s == -1\n#error not defined\n#endif\n\" |\
 622 %s -E -dM -D_POSIX_SOURCE %s \
 623 -isystem `%s --print-prog-name=include` - 2> /dev/null > %s";
 624
 625
 626 /* The compiler we use (given on the command line).  */
 627 const char *CC;
 628 /* The -I parameters for CC to find all headers.  */
 629 const char *INC;
 630
 631 static char *xstrndup (const char *, size_t);
 632 static const char **get_null_defines (void);
 633 static int check_header (const struct header *, const char **);
 634 static int xsystem (const char *);
 635
 636 int
 637 main (int argc, char *argv[])
 638 {
 639   int h;
 640   int result = 0;
 641   const char **ignore_list;
 642
 643   CC = argc > 1 ? argv[1] : "gcc";
 644   INC = argc > 2 ? argv[2] : "";
 645
 646   if (system (NULL) == 0)
 647     {
 648       puts ("Sorry, no command processor.");
 649       return EXIT_FAILURE;
 650     }
 651
 652   /* First get list of symbols which are defined by the compiler.  */
 653   ignore_list = get_null_defines ();
 654
 655   fputs ("Tested files:\n", stdout);
 656
 657   for (h = 0; h < NUMBER_OF_HEADERS; ++h)
 658     result |= check_header (&headers[h], ignore_list);
 659
 660   /* The test suite should return errors but for now this is not
 661      practical.  Give a warning and ask the user to correct the bugs.  */
 662   return result;
 663 }
 664
 665
 666 static char *
 667 xstrndup (const char *s, size_t n)
 668 {
 669   size_t len = n;
 670   char *new = malloc (len + 1);
 671
 672   if (new == NULL)
 673     return NULL;
 674
 675   new[len] = '\0';
 676   return memcpy (new, s, len);
 677 }
 678
 679
 680 /* Like system but propagate interrupt and quit signals.  */
 681 int
 682 xsystem (const char *cmd)
 683 {
 684   int status;
 685
 686   status = system (cmd);
 687   if (status != -1)
 688     {
 689       if (WIFSIGNALED (status))
 690         {
 691           if (WTERMSIG (status) == SIGINT || WTERMSIG (status) == SIGQUIT)
 692             raise (WTERMSIG (status));
 693         }
 694       else if (WIFEXITED (status))
 695         {
 696           if (WEXITSTATUS (status) == SIGINT + 128
 697               || WEXITSTATUS (status) == SIGQUIT + 128)
 698             raise (WEXITSTATUS (status) - 128);
 699         }
 700     }
 701   return status;
 702 }
 703
 704
 705 static const char **
 706 get_null_defines (void)
 707 {
 708   char line[BUFSIZ], *command;
 709   char **result = NULL;
 710   size_t result_len = 0;
 711   size_t result_max = 0;
 712   FILE *input;
 713   int first = 1;
 714
 715   macrofile = tmpnam (NULL);
 716
 717   command = malloc (sizeof fmt + sizeof "/dev/null" + 2 * strlen (CC)
 718                     + strlen (INC) + strlen (macrofile));
 719
 720   if (command == NULL)
 721     {
 722       puts ("No more memory.");
 723       exit (1);
 724     }
 725
 726   sprintf (command, fmt, "/dev/null", CC, INC, CC, macrofile);
 727
 728   if (xsystem (command))
 729     {
 730       puts ("system() returned nonzero");
 731       return NULL;
 732     }
 733   free (command);
 734   input = fopen (macrofile, "r");
 735
 736   if (input == NULL)
 737     {
 738       printf ("Could not read %s: ", macrofile);
 739       perror (NULL);
 740       return NULL;
 741     }
 742
 743   while (fgets (line, sizeof line, input) != NULL)
 744     {
 745       char *start;
 746       if (strlen (line) < 9 || line[7] != ' ')
 747         { /* "#define A" */
 748           printf ("Malformed input, expected '#define MACRO'\ngot '%s'\n",
 749                   line);
 750           continue;
 751         }
 752       if (line[8] == '_')
 753         /* It's a safe identifier.  */
 754         continue;
 755       if (result_len == result_max)
 756         {
 757           result_max += 10;
 758           result = realloc (result, result_max * sizeof (char **));
 759           if (result == NULL)
 760             {
 761               puts ("No more memory.");
 762               exit (1);
 763             }
 764         }
 765       start = &line[8];
 766       result[result_len++] = xstrndup (start, strcspn (start, " ("));
 767
 768       if (first)
 769         {
 770           fputs ("The following identifiers will be ignored since the compiler defines them\nby default:\n", stdout);
 771           first = 0;
 772         }
 773       puts (result[result_len - 1]);
 774     }
 775   if (result_len == result_max)
 776     {
 777       result_max += 1;
 778       result = realloc (result, result_max * sizeof (char **));
 779       if (result == NULL)
 780         {
 781           puts ("No more memory.");
 782           exit (1);
 783         }
 784     }
 785   result[result_len] = NULL;
 786   fclose (input);
 787   remove (macrofile);
 788
 789   return (const char **) result;
 790 }
 791
 792
 793 static int
 794 check_header (const struct header *header, const char **except)
 795 {
 796   char line[BUFSIZ], command[sizeof fmt + strlen (header->name)
 797                              + 2 * strlen (CC)
 798                              + strlen (INC) + strlen (macrofile)];
 799   FILE *input;
 800   int result = 0;
 801   int found[header->nsyms];
 802   int i;
 803
 804   memset (found, '\0', header->nsyms * sizeof (int));
 805
 806   printf ("=== %s ===\n", header->name);
 807   sprintf (command, fmt, header->name, CC, INC, CC, macrofile);
 808
 809   /* First see whether this subset is supported at all.  */
 810   if (header->subset != NULL)
 811     {
 812       sprintf (line, testfmt, header->subset, header->subset, CC, INC, CC,
 813                macrofile);
 814       if (xsystem (line))
 815         {
 816           printf ("!! not available\n");
 817           return 0;
 818         }
 819     }
 820
 821   if (xsystem (command))
 822     {
 823       puts ("system() returned nonzero");
 824       result = 1;
 825     }
 826   input = fopen (macrofile, "r");
 827
 828   if (input == NULL)
 829     {
 830       printf ("Could not read %s: ", macrofile);
 831       perror (NULL);
 832       return 1;
 833     }
 834
 835   while (fgets (line, sizeof line, input) != NULL)
 836     {
 837       const char **ignore;
 838       if (strlen (line) < 9 || line[7] != ' ')
 839         { /* "#define A" */
 840           printf ("Malformed input, expected '#define MACRO'\ngot '%s'\n",
 841                   line);
 842           result = 1;
 843           continue;
 844         }
 845
 846       /* Find next char after the macro identifier; this can be either
 847          a space or an open parenthesis.  */
 848       line[8 + strcspn (&line[8], " (")] = '\0';
 849
 850       /* Now check whether it's one of the required macros.  */
 851       for (i = 0; i < header->nsyms; ++i)
 852         if (!strcmp (&line[8], header->syms[i]))
 853           break;
 854       if (i < header->nsyms)
 855         {
 856           found[i] = 1;
 857           continue;
 858         }
 859
 860       /* Symbols starting with "_" are ok.  */
 861       if (line[8] == '_')
 862         continue;
 863
 864       /* Maybe one of the symbols which are always defined.  */
 865       for (ignore = except; *ignore != NULL; ++ignore)
 866         if (! strcmp (&line[8], *ignore))
 867           break;
 868       if (*ignore != NULL)
 869         continue;
 870
 871       /* Otherwise the symbol better should match one of the following.  */
 872       for (i = 0; i < header->nmaybe; ++i)
 873         if (fnmatch (header->maybe[i], &line[8], 0) == 0)
 874           break;
 875       if (i < header->nmaybe)
 876         continue;
 877
 878       printf ("*  invalid macro `%s'\n", &line[8]);
 879       result |= 1;
 880     }
 881   fclose (input);
 882   remove (macrofile);
 883
 884   for (i = 0; i < header->nsyms; ++i)
 885     if (found[i] == 0)
 886       printf ("** macro `%s' not defined\n", header->syms[i]);
 887
 888   return result;
 889 }