Andrew's git / gitweb.git / git-compat-util.h
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git-compat-util.hon commit git-compat-util.h: add FLOSS headers for HPE NonStop (1305ef3)
   1#ifndef GIT_COMPAT_UTIL_H
   2#define GIT_COMPAT_UTIL_H
   3
   4#define _FILE_OFFSET_BITS 64
   5
   6
   7/* Derived from Linux "Features Test Macro" header
   8 * Convenience macros to test the versions of gcc (or
   9 * a compatible compiler).
  10 * Use them like this:
  11 *  #if GIT_GNUC_PREREQ (2,8)
  12 *   ... code requiring gcc 2.8 or later ...
  13 *  #endif
  14*/
  15#if defined(__GNUC__) && defined(__GNUC_MINOR__)
  16# define GIT_GNUC_PREREQ(maj, min) \
  17        ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
  18#else
  19 #define GIT_GNUC_PREREQ(maj, min) 0
  20#endif
  21
  22
  23#ifndef FLEX_ARRAY
  24/*
  25 * See if our compiler is known to support flexible array members.
  26 */
  27#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && (!defined(__SUNPRO_C) || (__SUNPRO_C > 0x580))
  28# define FLEX_ARRAY /* empty */
  29#elif defined(__GNUC__)
  30# if (__GNUC__ >= 3)
  31#  define FLEX_ARRAY /* empty */
  32# else
  33#  define FLEX_ARRAY 0 /* older GNU extension */
  34# endif
  35#endif
  36
  37/*
  38 * Otherwise, default to safer but a bit wasteful traditional style
  39 */
  40#ifndef FLEX_ARRAY
  41# define FLEX_ARRAY 1
  42#endif
  43#endif
  44
  45
  46/*
  47 * BUILD_ASSERT_OR_ZERO - assert a build-time dependency, as an expression.
  48 * @cond: the compile-time condition which must be true.
  49 *
  50 * Your compile will fail if the condition isn't true, or can't be evaluated
  51 * by the compiler.  This can be used in an expression: its value is "0".
  52 *
  53 * Example:
  54 *      #define foo_to_char(foo)                                        \
  55 *               ((char *)(foo)                                         \
  56 *                + BUILD_ASSERT_OR_ZERO(offsetof(struct foo, string) == 0))
  57 */
  58#define BUILD_ASSERT_OR_ZERO(cond) \
  59        (sizeof(char [1 - 2*!(cond)]) - 1)
  60
  61#if GIT_GNUC_PREREQ(3, 1)
  62 /* &arr[0] degrades to a pointer: a different type from an array */
  63# define BARF_UNLESS_AN_ARRAY(arr)                                              \
  64        BUILD_ASSERT_OR_ZERO(!__builtin_types_compatible_p(__typeof__(arr), \
  65                                                           __typeof__(&(arr)[0])))
  66#else
  67# define BARF_UNLESS_AN_ARRAY(arr) 0
  68#endif
  69/*
  70 * ARRAY_SIZE - get the number of elements in a visible array
  71 *  <at> x: the array whose size you want.
  72 *
  73 * This does not work on pointers, or arrays declared as [], or
  74 * function parameters.  With correct compiler support, such usage
  75 * will cause a build error (see the build_assert_or_zero macro).
  76 */
  77#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]) + BARF_UNLESS_AN_ARRAY(x))
  78
  79#define bitsizeof(x)  (CHAR_BIT * sizeof(x))
  80
  81#define maximum_signed_value_of_type(a) \
  82    (INTMAX_MAX >> (bitsizeof(intmax_t) - bitsizeof(a)))
  83
  84#define maximum_unsigned_value_of_type(a) \
  85    (UINTMAX_MAX >> (bitsizeof(uintmax_t) - bitsizeof(a)))
  86
  87/*
  88 * Signed integer overflow is undefined in C, so here's a helper macro
  89 * to detect if the sum of two integers will overflow.
  90 *
  91 * Requires: a >= 0, typeof(a) equals typeof(b)
  92 */
  93#define signed_add_overflows(a, b) \
  94    ((b) > maximum_signed_value_of_type(a) - (a))
  95
  96#define unsigned_add_overflows(a, b) \
  97    ((b) > maximum_unsigned_value_of_type(a) - (a))
  98
  99/*
 100 * Returns true if the multiplication of "a" and "b" will
 101 * overflow. The types of "a" and "b" must match and must be unsigned.
 102 * Note that this macro evaluates "a" twice!
 103 */
 104#define unsigned_mult_overflows(a, b) \
 105    ((a) && (b) > maximum_unsigned_value_of_type(a) / (a))
 106
 107#ifdef __GNUC__
 108#define TYPEOF(x) (__typeof__(x))
 109#else
 110#define TYPEOF(x)
 111#endif
 112
 113#define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (bitsizeof(x) - (bits))))
 114#define HAS_MULTI_BITS(i)  ((i) & ((i) - 1))  /* checks if an integer has more than 1 bit set */
 115
 116#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
 117
 118/* Approximation of the length of the decimal representation of this type. */
 119#define decimal_length(x)       ((int)(sizeof(x) * 2.56 + 0.5) + 1)
 120
 121#if defined(__sun__)
 122 /*
 123  * On Solaris, when _XOPEN_EXTENDED is set, its header file
 124  * forces the programs to be XPG4v2, defeating any _XOPEN_SOURCE
 125  * setting to say we are XPG5 or XPG6.  Also on Solaris,
 126  * XPG6 programs must be compiled with a c99 compiler, while
 127  * non XPG6 programs must be compiled with a pre-c99 compiler.
 128  */
 129# if __STDC_VERSION__ - 0 >= 199901L
 130# define _XOPEN_SOURCE 600
 131# else
 132# define _XOPEN_SOURCE 500
 133# endif
 134#elif !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__USLC__) && \
 135      !defined(_M_UNIX) && !defined(__sgi) && !defined(__DragonFly__) && \
 136      !defined(__TANDEM) && !defined(__QNX__) && !defined(__MirBSD__) && \
 137      !defined(__CYGWIN__)
 138#define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */
 139#define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */
 140#endif
 141#define _ALL_SOURCE 1
 142#define _GNU_SOURCE 1
 143#define _BSD_SOURCE 1
 144#define _DEFAULT_SOURCE 1
 145#define _NETBSD_SOURCE 1
 146#define _SGI_SOURCE 1
 147
 148#if defined(WIN32) && !defined(__CYGWIN__) /* Both MinGW and MSVC */
 149# if !defined(_WIN32_WINNT)
 150#  define _WIN32_WINNT 0x0600
 151# endif
 152#define WIN32_LEAN_AND_MEAN  /* stops windows.h including winsock.h */
 153#include <winsock2.h>
 154#include <windows.h>
 155#define GIT_WINDOWS_NATIVE
 156#endif
 157
 158#include <unistd.h>
 159#include <stdio.h>
 160#include <sys/stat.h>
 161#include <fcntl.h>
 162#include <stddef.h>
 163#include <stdlib.h>
 164#include <stdarg.h>
 165#include <string.h>
 166#ifdef HAVE_STRINGS_H
 167#include <strings.h> /* for strcasecmp() */
 168#endif
 169#include <errno.h>
 170#include <limits.h>
 171#ifdef NEEDS_SYS_PARAM_H
 172#include <sys/param.h>
 173#endif
 174#include <sys/types.h>
 175#include <dirent.h>
 176#include <sys/time.h>
 177#include <time.h>
 178#include <signal.h>
 179#include <assert.h>
 180#include <regex.h>
 181#include <utime.h>
 182#include <syslog.h>
 183#if !defined(NO_POLL_H)
 184#include <poll.h>
 185#elif !defined(NO_SYS_POLL_H)
 186#include <sys/poll.h>
 187#else
 188/* Pull the compat stuff */
 189#include <poll.h>
 190#endif
 191#ifdef HAVE_BSD_SYSCTL
 192#include <sys/sysctl.h>
 193#endif
 194
 195#if defined(__CYGWIN__)
 196#include "compat/cygwin.h"
 197#endif
 198#if defined(__MINGW32__)
 199/* pull in Windows compatibility stuff */
 200#include "compat/mingw.h"
 201#elif defined(_MSC_VER)
 202#include "compat/msvc.h"
 203#else
 204#include <sys/utsname.h>
 205#include <sys/wait.h>
 206#include <sys/resource.h>
 207#include <sys/socket.h>
 208#include <sys/ioctl.h>
 209#include <termios.h>
 210#ifndef NO_SYS_SELECT_H
 211#include <sys/select.h>
 212#endif
 213#include <netinet/in.h>
 214#include <netinet/tcp.h>
 215#include <arpa/inet.h>
 216#include <netdb.h>
 217#include <pwd.h>
 218#include <sys/un.h>
 219#ifndef NO_INTTYPES_H
 220#include <inttypes.h>
 221#else
 222#include <stdint.h>
 223#endif
 224#ifdef NO_INTPTR_T
 225/*
 226 * On I16LP32, ILP32 and LP64 "long" is the safe bet, however
 227 * on LLP86, IL33LLP64 and P64 it needs to be "long long",
 228 * while on IP16 and IP16L32 it is "int" (resp. "short")
 229 * Size needs to match (or exceed) 'sizeof(void *)'.
 230 * We can't take "long long" here as not everybody has it.
 231 */
 232typedef long intptr_t;
 233typedef unsigned long uintptr_t;
 234#endif
 235#undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */
 236#include <grp.h>
 237#define _ALL_SOURCE 1
 238#endif
 239
 240/* used on Mac OS X */
 241#ifdef PRECOMPOSE_UNICODE
 242#include "compat/precompose_utf8.h"
 243#else
 244#define precompose_str(in,i_nfd2nfc)
 245#define precompose_argv(c,v)
 246#define probe_utf8_pathname_composition()
 247#endif
 248
 249#ifdef MKDIR_WO_TRAILING_SLASH
 250#define mkdir(a,b) compat_mkdir_wo_trailing_slash((a),(b))
 251extern int compat_mkdir_wo_trailing_slash(const char*, mode_t);
 252#endif
 253
 254#ifdef NO_STRUCT_ITIMERVAL
 255struct itimerval {
 256        struct timeval it_interval;
 257        struct timeval it_value;
 258};
 259#endif
 260
 261#ifdef NO_SETITIMER
 262#define setitimer(which,value,ovalue)
 263#endif
 264
 265#ifndef NO_LIBGEN_H
 266#include <libgen.h>
 267#else
 268#define basename gitbasename
 269extern char *gitbasename(char *);
 270#define dirname gitdirname
 271extern char *gitdirname(char *);
 272#endif
 273
 274#ifndef NO_ICONV
 275#include <iconv.h>
 276#endif
 277
 278#ifndef NO_OPENSSL
 279#ifdef __APPLE__
 280#define __AVAILABILITY_MACROS_USES_AVAILABILITY 0
 281#include <AvailabilityMacros.h>
 282#undef DEPRECATED_ATTRIBUTE
 283#define DEPRECATED_ATTRIBUTE
 284#undef __AVAILABILITY_MACROS_USES_AVAILABILITY
 285#endif
 286#include <openssl/ssl.h>
 287#include <openssl/err.h>
 288#endif
 289
 290#ifdef HAVE_SYSINFO
 291# include <sys/sysinfo.h>
 292#endif
 293
 294/* On most systems <netdb.h> would have given us this, but
 295 * not on some systems (e.g. z/OS).
 296 */
 297#ifndef NI_MAXHOST
 298#define NI_MAXHOST 1025
 299#endif
 300
 301#ifndef NI_MAXSERV
 302#define NI_MAXSERV 32
 303#endif
 304
 305/* On most systems <limits.h> would have given us this, but
 306 * not on some systems (e.g. GNU/Hurd).
 307 */
 308#ifndef PATH_MAX
 309#define PATH_MAX 4096
 310#endif
 311
 312#ifndef PRIuMAX
 313#define PRIuMAX "llu"
 314#endif
 315
 316#ifndef SCNuMAX
 317#define SCNuMAX PRIuMAX
 318#endif
 319
 320#ifndef PRIu32
 321#define PRIu32 "u"
 322#endif
 323
 324#ifndef PRIx32
 325#define PRIx32 "x"
 326#endif
 327
 328#ifndef PRIo32
 329#define PRIo32 "o"
 330#endif
 331
 332typedef uintmax_t timestamp_t;
 333#define PRItime PRIuMAX
 334#define parse_timestamp strtoumax
 335#define TIME_MAX UINTMAX_MAX
 336
 337#ifndef PATH_SEP
 338#define PATH_SEP ':'
 339#endif
 340
 341#ifdef HAVE_PATHS_H
 342#include <paths.h>
 343#endif
 344#ifndef _PATH_DEFPATH
 345#define _PATH_DEFPATH "/usr/local/bin:/usr/bin:/bin"
 346#endif
 347
 348#ifndef platform_core_config
 349static inline int noop_core_config(const char *var, const char *value, void *cb)
 350{
 351        return 0;
 352}
 353#define platform_core_config noop_core_config
 354#endif
 355
 356#ifndef has_dos_drive_prefix
 357static inline int git_has_dos_drive_prefix(const char *path)
 358{
 359        return 0;
 360}
 361#define has_dos_drive_prefix git_has_dos_drive_prefix
 362#endif
 363
 364#ifndef skip_dos_drive_prefix
 365static inline int git_skip_dos_drive_prefix(char **path)
 366{
 367        return 0;
 368}
 369#define skip_dos_drive_prefix git_skip_dos_drive_prefix
 370#endif
 371
 372#ifndef is_dir_sep
 373static inline int git_is_dir_sep(int c)
 374{
 375        return c == '/';
 376}
 377#define is_dir_sep git_is_dir_sep
 378#endif
 379
 380#ifndef offset_1st_component
 381static inline int git_offset_1st_component(const char *path)
 382{
 383        return is_dir_sep(path[0]);
 384}
 385#define offset_1st_component git_offset_1st_component
 386#endif
 387
 388#ifndef find_last_dir_sep
 389static inline char *git_find_last_dir_sep(const char *path)
 390{
 391        return strrchr(path, '/');
 392}
 393#define find_last_dir_sep git_find_last_dir_sep
 394#endif
 395
 396#ifndef query_user_email
 397#define query_user_email() NULL
 398#endif
 399
 400#ifdef __TANDEM
 401#include <floss.h(floss_execl,floss_execlp,floss_execv,floss_execvp)>
 402#include <floss.h(floss_getpwuid)>
 403#ifndef NSIG
 404/*
 405 * NonStop NSE and NSX do not provide NSIG. SIGGUARDIAN(99) is the highest
 406 * known, by detective work using kill -l as a list is all signals
 407 * instead of signal.h where it should be.
 408 */
 409# define NSIG 100
 410#endif
 411#endif
 412
 413#if defined(__HP_cc) && (__HP_cc >= 61000)
 414#define NORETURN __attribute__((noreturn))
 415#define NORETURN_PTR
 416#elif defined(__GNUC__) && !defined(NO_NORETURN)
 417#define NORETURN __attribute__((__noreturn__))
 418#define NORETURN_PTR __attribute__((__noreturn__))
 419#elif defined(_MSC_VER)
 420#define NORETURN __declspec(noreturn)
 421#define NORETURN_PTR
 422#else
 423#define NORETURN
 424#define NORETURN_PTR
 425#ifndef __GNUC__
 426#ifndef __attribute__
 427#define __attribute__(x)
 428#endif
 429#endif
 430#endif
 431
 432/* The sentinel attribute is valid from gcc version 4.0 */
 433#if defined(__GNUC__) && (__GNUC__ >= 4)
 434#define LAST_ARG_MUST_BE_NULL __attribute__((sentinel))
 435#else
 436#define LAST_ARG_MUST_BE_NULL
 437#endif
 438
 439#define MAYBE_UNUSED __attribute__((__unused__))
 440
 441#include "compat/bswap.h"
 442
 443#include "wildmatch.h"
 444
 445struct strbuf;
 446
 447/* General helper functions */
 448extern void vreportf(const char *prefix, const char *err, va_list params);
 449extern NORETURN void usage(const char *err);
 450extern NORETURN void usagef(const char *err, ...) __attribute__((format (printf, 1, 2)));
 451extern NORETURN void die(const char *err, ...) __attribute__((format (printf, 1, 2)));
 452extern NORETURN void die_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
 453extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
 454extern int error_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
 455extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
 456extern void warning_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
 457
 458#ifndef NO_OPENSSL
 459#ifdef APPLE_COMMON_CRYPTO
 460#include "compat/apple-common-crypto.h"
 461#else
 462#include <openssl/evp.h>
 463#include <openssl/hmac.h>
 464#endif /* APPLE_COMMON_CRYPTO */
 465#include <openssl/x509v3.h>
 466#endif /* NO_OPENSSL */
 467
 468/*
 469 * Let callers be aware of the constant return value; this can help
 470 * gcc with -Wuninitialized analysis. We restrict this trick to gcc, though,
 471 * because some compilers may not support variadic macros. Since we're only
 472 * trying to help gcc, anyway, it's OK; other compilers will fall back to
 473 * using the function as usual.
 474 */
 475#if defined(__GNUC__)
 476static inline int const_error(void)
 477{
 478        return -1;
 479}
 480#define error(...) (error(__VA_ARGS__), const_error())
 481#define error_errno(...) (error_errno(__VA_ARGS__), const_error())
 482#endif
 483
 484extern void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params));
 485extern void set_error_routine(void (*routine)(const char *err, va_list params));
 486extern void (*get_error_routine(void))(const char *err, va_list params);
 487extern void set_warn_routine(void (*routine)(const char *warn, va_list params));
 488extern void (*get_warn_routine(void))(const char *warn, va_list params);
 489extern void set_die_is_recursing_routine(int (*routine)(void));
 490
 491extern int starts_with(const char *str, const char *prefix);
 492extern int istarts_with(const char *str, const char *prefix);
 493
 494/*
 495 * If the string "str" begins with the string found in "prefix", return 1.
 496 * The "out" parameter is set to "str + strlen(prefix)" (i.e., to the point in
 497 * the string right after the prefix).
 498 *
 499 * Otherwise, return 0 and leave "out" untouched.
 500 *
 501 * Examples:
 502 *
 503 *   [extract branch name, fail if not a branch]
 504 *   if (!skip_prefix(ref, "refs/heads/", &branch)
 505 *      return -1;
 506 *
 507 *   [skip prefix if present, otherwise use whole string]
 508 *   skip_prefix(name, "refs/heads/", &name);
 509 */
 510static inline int skip_prefix(const char *str, const char *prefix,
 511                              const char **out)
 512{
 513        do {
 514                if (!*prefix) {
 515                        *out = str;
 516                        return 1;
 517                }
 518        } while (*str++ == *prefix++);
 519        return 0;
 520}
 521
 522/*
 523 * If the string "str" is the same as the string in "prefix", then the "arg"
 524 * parameter is set to the "def" parameter and 1 is returned.
 525 * If the string "str" begins with the string found in "prefix" and then a
 526 * "=" sign, then the "arg" parameter is set to "str + strlen(prefix) + 1"
 527 * (i.e., to the point in the string right after the prefix and the "=" sign),
 528 * and 1 is returned.
 529 *
 530 * Otherwise, return 0 and leave "arg" untouched.
 531 *
 532 * When we accept both a "--key" and a "--key=<val>" option, this function
 533 * can be used instead of !strcmp(arg, "--key") and then
 534 * skip_prefix(arg, "--key=", &arg) to parse such an option.
 535 */
 536int skip_to_optional_arg_default(const char *str, const char *prefix,
 537                                 const char **arg, const char *def);
 538
 539static inline int skip_to_optional_arg(const char *str, const char *prefix,
 540                                       const char **arg)
 541{
 542        return skip_to_optional_arg_default(str, prefix, arg, "");
 543}
 544
 545/*
 546 * Like skip_prefix, but promises never to read past "len" bytes of the input
 547 * buffer, and returns the remaining number of bytes in "out" via "outlen".
 548 */
 549static inline int skip_prefix_mem(const char *buf, size_t len,
 550                                  const char *prefix,
 551                                  const char **out, size_t *outlen)
 552{
 553        size_t prefix_len = strlen(prefix);
 554        if (prefix_len <= len && !memcmp(buf, prefix, prefix_len)) {
 555                *out = buf + prefix_len;
 556                *outlen = len - prefix_len;
 557                return 1;
 558        }
 559        return 0;
 560}
 561
 562/*
 563 * If buf ends with suffix, return 1 and subtract the length of the suffix
 564 * from *len. Otherwise, return 0 and leave *len untouched.
 565 */
 566static inline int strip_suffix_mem(const char *buf, size_t *len,
 567                                   const char *suffix)
 568{
 569        size_t suflen = strlen(suffix);
 570        if (*len < suflen || memcmp(buf + (*len - suflen), suffix, suflen))
 571                return 0;
 572        *len -= suflen;
 573        return 1;
 574}
 575
 576/*
 577 * If str ends with suffix, return 1 and set *len to the size of the string
 578 * without the suffix. Otherwise, return 0 and set *len to the size of the
 579 * string.
 580 *
 581 * Note that we do _not_ NUL-terminate str to the new length.
 582 */
 583static inline int strip_suffix(const char *str, const char *suffix, size_t *len)
 584{
 585        *len = strlen(str);
 586        return strip_suffix_mem(str, len, suffix);
 587}
 588
 589static inline int ends_with(const char *str, const char *suffix)
 590{
 591        size_t len;
 592        return strip_suffix(str, suffix, &len);
 593}
 594
 595#define SWAP(a, b) do {                                         \
 596        void *_swap_a_ptr = &(a);                               \
 597        void *_swap_b_ptr = &(b);                               \
 598        unsigned char _swap_buffer[sizeof(a)];                  \
 599        memcpy(_swap_buffer, _swap_a_ptr, sizeof(a));           \
 600        memcpy(_swap_a_ptr, _swap_b_ptr, sizeof(a) +            \
 601               BUILD_ASSERT_OR_ZERO(sizeof(a) == sizeof(b)));   \
 602        memcpy(_swap_b_ptr, _swap_buffer, sizeof(a));           \
 603} while (0)
 604
 605#if defined(NO_MMAP) || defined(USE_WIN32_MMAP)
 606
 607#ifndef PROT_READ
 608#define PROT_READ 1
 609#define PROT_WRITE 2
 610#define MAP_PRIVATE 1
 611#endif
 612
 613#define mmap git_mmap
 614#define munmap git_munmap
 615extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);
 616extern int git_munmap(void *start, size_t length);
 617
 618#else /* NO_MMAP || USE_WIN32_MMAP */
 619
 620#include <sys/mman.h>
 621
 622#endif /* NO_MMAP || USE_WIN32_MMAP */
 623
 624#ifdef NO_MMAP
 625
 626/* This value must be multiple of (pagesize * 2) */
 627#define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024)
 628
 629#else /* NO_MMAP */
 630
 631/* This value must be multiple of (pagesize * 2) */
 632#define DEFAULT_PACKED_GIT_WINDOW_SIZE \
 633        (sizeof(void*) >= 8 \
 634                ?  1 * 1024 * 1024 * 1024 \
 635                : 32 * 1024 * 1024)
 636
 637#endif /* NO_MMAP */
 638
 639#ifndef MAP_FAILED
 640#define MAP_FAILED ((void *)-1)
 641#endif
 642
 643#ifdef NO_ST_BLOCKS_IN_STRUCT_STAT
 644#define on_disk_bytes(st) ((st).st_size)
 645#else
 646#define on_disk_bytes(st) ((st).st_blocks * 512)
 647#endif
 648
 649#ifdef NEEDS_MODE_TRANSLATION
 650#undef S_IFMT
 651#undef S_IFREG
 652#undef S_IFDIR
 653#undef S_IFLNK
 654#undef S_IFBLK
 655#undef S_IFCHR
 656#undef S_IFIFO
 657#undef S_IFSOCK
 658#define S_IFMT   0170000
 659#define S_IFREG  0100000
 660#define S_IFDIR  0040000
 661#define S_IFLNK  0120000
 662#define S_IFBLK  0060000
 663#define S_IFCHR  0020000
 664#define S_IFIFO  0010000
 665#define S_IFSOCK 0140000
 666#ifdef stat
 667#undef stat
 668#endif
 669#define stat(path, buf) git_stat(path, buf)
 670extern int git_stat(const char *, struct stat *);
 671#ifdef fstat
 672#undef fstat
 673#endif
 674#define fstat(fd, buf) git_fstat(fd, buf)
 675extern int git_fstat(int, struct stat *);
 676#ifdef lstat
 677#undef lstat
 678#endif
 679#define lstat(path, buf) git_lstat(path, buf)
 680extern int git_lstat(const char *, struct stat *);
 681#endif
 682
 683#define DEFAULT_PACKED_GIT_LIMIT \
 684        ((1024L * 1024L) * (size_t)(sizeof(void*) >= 8 ? (32 * 1024L * 1024L) : 256))
 685
 686#ifdef NO_PREAD
 687#define pread git_pread
 688extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset);
 689#endif
 690/*
 691 * Forward decl that will remind us if its twin in cache.h changes.
 692 * This function is used in compat/pread.c.  But we can't include
 693 * cache.h there.
 694 */
 695extern ssize_t read_in_full(int fd, void *buf, size_t count);
 696
 697#ifdef NO_SETENV
 698#define setenv gitsetenv
 699extern int gitsetenv(const char *, const char *, int);
 700#endif
 701
 702#ifdef NO_MKDTEMP
 703#define mkdtemp gitmkdtemp
 704extern char *gitmkdtemp(char *);
 705#endif
 706
 707#ifdef NO_UNSETENV
 708#define unsetenv gitunsetenv
 709extern void gitunsetenv(const char *);
 710#endif
 711
 712#ifdef NO_STRCASESTR
 713#define strcasestr gitstrcasestr
 714extern char *gitstrcasestr(const char *haystack, const char *needle);
 715#endif
 716
 717#ifdef NO_STRLCPY
 718#define strlcpy gitstrlcpy
 719extern size_t gitstrlcpy(char *, const char *, size_t);
 720#endif
 721
 722#ifdef NO_STRTOUMAX
 723#define strtoumax gitstrtoumax
 724extern uintmax_t gitstrtoumax(const char *, char **, int);
 725#define strtoimax gitstrtoimax
 726extern intmax_t gitstrtoimax(const char *, char **, int);
 727#endif
 728
 729#ifdef NO_HSTRERROR
 730#define hstrerror githstrerror
 731extern const char *githstrerror(int herror);
 732#endif
 733
 734#ifdef NO_MEMMEM
 735#define memmem gitmemmem
 736void *gitmemmem(const void *haystack, size_t haystacklen,
 737                const void *needle, size_t needlelen);
 738#endif
 739
 740#ifdef OVERRIDE_STRDUP
 741#ifdef strdup
 742#undef strdup
 743#endif
 744#define strdup gitstrdup
 745char *gitstrdup(const char *s);
 746#endif
 747
 748#ifdef NO_GETPAGESIZE
 749#define getpagesize() sysconf(_SC_PAGESIZE)
 750#endif
 751
 752#ifndef O_CLOEXEC
 753#define O_CLOEXEC 0
 754#endif
 755
 756#ifdef FREAD_READS_DIRECTORIES
 757# if !defined(SUPPRESS_FOPEN_REDEFINITION)
 758#  ifdef fopen
 759#   undef fopen
 760#  endif
 761#  define fopen(a,b) git_fopen(a,b)
 762# endif
 763extern FILE *git_fopen(const char*, const char*);
 764#endif
 765
 766#ifdef SNPRINTF_RETURNS_BOGUS
 767#ifdef snprintf
 768#undef snprintf
 769#endif
 770#define snprintf git_snprintf
 771extern int git_snprintf(char *str, size_t maxsize,
 772                        const char *format, ...);
 773#ifdef vsnprintf
 774#undef vsnprintf
 775#endif
 776#define vsnprintf git_vsnprintf
 777extern int git_vsnprintf(char *str, size_t maxsize,
 778                         const char *format, va_list ap);
 779#endif
 780
 781#ifdef __GLIBC_PREREQ
 782#if __GLIBC_PREREQ(2, 1)
 783#define HAVE_STRCHRNUL
 784#endif
 785#endif
 786
 787#ifndef HAVE_STRCHRNUL
 788#define strchrnul gitstrchrnul
 789static inline char *gitstrchrnul(const char *s, int c)
 790{
 791        while (*s && *s != c)
 792                s++;
 793        return (char *)s;
 794}
 795#endif
 796
 797#ifdef NO_INET_PTON
 798int inet_pton(int af, const char *src, void *dst);
 799#endif
 800
 801#ifdef NO_INET_NTOP
 802const char *inet_ntop(int af, const void *src, char *dst, size_t size);
 803#endif
 804
 805#ifdef NO_PTHREADS
 806#define atexit git_atexit
 807extern int git_atexit(void (*handler)(void));
 808#endif
 809
 810typedef void (*try_to_free_t)(size_t);
 811extern try_to_free_t set_try_to_free_routine(try_to_free_t);
 812
 813static inline size_t st_add(size_t a, size_t b)
 814{
 815        if (unsigned_add_overflows(a, b))
 816                die("size_t overflow: %"PRIuMAX" + %"PRIuMAX,
 817                    (uintmax_t)a, (uintmax_t)b);
 818        return a + b;
 819}
 820#define st_add3(a,b,c)   st_add(st_add((a),(b)),(c))
 821#define st_add4(a,b,c,d) st_add(st_add3((a),(b),(c)),(d))
 822
 823static inline size_t st_mult(size_t a, size_t b)
 824{
 825        if (unsigned_mult_overflows(a, b))
 826                die("size_t overflow: %"PRIuMAX" * %"PRIuMAX,
 827                    (uintmax_t)a, (uintmax_t)b);
 828        return a * b;
 829}
 830
 831static inline size_t st_sub(size_t a, size_t b)
 832{
 833        if (a < b)
 834                die("size_t underflow: %"PRIuMAX" - %"PRIuMAX,
 835                    (uintmax_t)a, (uintmax_t)b);
 836        return a - b;
 837}
 838
 839#ifdef HAVE_ALLOCA_H
 840# include <alloca.h>
 841# define xalloca(size)      (alloca(size))
 842# define xalloca_free(p)    do {} while (0)
 843#else
 844# define xalloca(size)      (xmalloc(size))
 845# define xalloca_free(p)    (free(p))
 846#endif
 847extern char *xstrdup(const char *str);
 848extern void *xmalloc(size_t size);
 849extern void *xmallocz(size_t size);
 850extern void *xmallocz_gently(size_t size);
 851extern void *xmemdupz(const void *data, size_t len);
 852extern char *xstrndup(const char *str, size_t len);
 853extern void *xrealloc(void *ptr, size_t size);
 854extern void *xcalloc(size_t nmemb, size_t size);
 855extern void *xmmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);
 856extern void *xmmap_gently(void *start, size_t length, int prot, int flags, int fd, off_t offset);
 857extern int xopen(const char *path, int flags, ...);
 858extern ssize_t xread(int fd, void *buf, size_t len);
 859extern ssize_t xwrite(int fd, const void *buf, size_t len);
 860extern ssize_t xpread(int fd, void *buf, size_t len, off_t offset);
 861extern int xdup(int fd);
 862extern FILE *xfopen(const char *path, const char *mode);
 863extern FILE *xfdopen(int fd, const char *mode);
 864extern int xmkstemp(char *temp_filename);
 865extern int xmkstemp_mode(char *temp_filename, int mode);
 866extern char *xgetcwd(void);
 867extern FILE *fopen_for_writing(const char *path);
 868extern FILE *fopen_or_warn(const char *path, const char *mode);
 869
 870/*
 871 * FREE_AND_NULL(ptr) is like free(ptr) followed by ptr = NULL. Note
 872 * that ptr is used twice, so don't pass e.g. ptr++.
 873 */
 874#define FREE_AND_NULL(p) do { free(p); (p) = NULL; } while (0)
 875
 876#define ALLOC_ARRAY(x, alloc) (x) = xmalloc(st_mult(sizeof(*(x)), (alloc)))
 877#define CALLOC_ARRAY(x, alloc) (x) = xcalloc((alloc), sizeof(*(x)));
 878#define REALLOC_ARRAY(x, alloc) (x) = xrealloc((x), st_mult(sizeof(*(x)), (alloc)))
 879
 880#define COPY_ARRAY(dst, src, n) copy_array((dst), (src), (n), sizeof(*(dst)) + \
 881        BUILD_ASSERT_OR_ZERO(sizeof(*(dst)) == sizeof(*(src))))
 882static inline void copy_array(void *dst, const void *src, size_t n, size_t size)
 883{
 884        if (n)
 885                memcpy(dst, src, st_mult(size, n));
 886}
 887
 888#define MOVE_ARRAY(dst, src, n) move_array((dst), (src), (n), sizeof(*(dst)) + \
 889        BUILD_ASSERT_OR_ZERO(sizeof(*(dst)) == sizeof(*(src))))
 890static inline void move_array(void *dst, const void *src, size_t n, size_t size)
 891{
 892        if (n)
 893                memmove(dst, src, st_mult(size, n));
 894}
 895
 896/*
 897 * These functions help you allocate structs with flex arrays, and copy
 898 * the data directly into the array. For example, if you had:
 899 *
 900 *   struct foo {
 901 *     int bar;
 902 *     char name[FLEX_ARRAY];
 903 *   };
 904 *
 905 * you can do:
 906 *
 907 *   struct foo *f;
 908 *   FLEX_ALLOC_MEM(f, name, src, len);
 909 *
 910 * to allocate a "foo" with the contents of "src" in the "name" field.
 911 * The resulting struct is automatically zero'd, and the flex-array field
 912 * is NUL-terminated (whether the incoming src buffer was or not).
 913 *
 914 * The FLEXPTR_* variants operate on structs that don't use flex-arrays,
 915 * but do want to store a pointer to some extra data in the same allocated
 916 * block. For example, if you have:
 917 *
 918 *   struct foo {
 919 *     char *name;
 920 *     int bar;
 921 *   };
 922 *
 923 * you can do:
 924 *
 925 *   struct foo *f;
 926 *   FLEXPTR_ALLOC_STR(f, name, src);
 927 *
 928 * and "name" will point to a block of memory after the struct, which will be
 929 * freed along with the struct (but the pointer can be repointed anywhere).
 930 *
 931 * The *_STR variants accept a string parameter rather than a ptr/len
 932 * combination.
 933 *
 934 * Note that these macros will evaluate the first parameter multiple
 935 * times, and it must be assignable as an lvalue.
 936 */
 937#define FLEX_ALLOC_MEM(x, flexname, buf, len) do { \
 938        size_t flex_array_len_ = (len); \
 939        (x) = xcalloc(1, st_add3(sizeof(*(x)), flex_array_len_, 1)); \
 940        memcpy((void *)(x)->flexname, (buf), flex_array_len_); \
 941} while (0)
 942#define FLEXPTR_ALLOC_MEM(x, ptrname, buf, len) do { \
 943        size_t flex_array_len_ = (len); \
 944        (x) = xcalloc(1, st_add3(sizeof(*(x)), flex_array_len_, 1)); \
 945        memcpy((x) + 1, (buf), flex_array_len_); \
 946        (x)->ptrname = (void *)((x)+1); \
 947} while(0)
 948#define FLEX_ALLOC_STR(x, flexname, str) \
 949        FLEX_ALLOC_MEM((x), flexname, (str), strlen(str))
 950#define FLEXPTR_ALLOC_STR(x, ptrname, str) \
 951        FLEXPTR_ALLOC_MEM((x), ptrname, (str), strlen(str))
 952
 953static inline char *xstrdup_or_null(const char *str)
 954{
 955        return str ? xstrdup(str) : NULL;
 956}
 957
 958static inline size_t xsize_t(off_t len)
 959{
 960        size_t size = (size_t) len;
 961
 962        if (len != (off_t) size)
 963                die("Cannot handle files this big");
 964        return size;
 965}
 966
 967__attribute__((format (printf, 3, 4)))
 968extern int xsnprintf(char *dst, size_t max, const char *fmt, ...);
 969
 970#ifndef HOST_NAME_MAX
 971#define HOST_NAME_MAX 256
 972#endif
 973
 974extern int xgethostname(char *buf, size_t len);
 975
 976/* in ctype.c, for kwset users */
 977extern const unsigned char tolower_trans_tbl[256];
 978
 979/* Sane ctype - no locale, and works with signed chars */
 980#undef isascii
 981#undef isspace
 982#undef isdigit
 983#undef isalpha
 984#undef isalnum
 985#undef isprint
 986#undef islower
 987#undef isupper
 988#undef tolower
 989#undef toupper
 990#undef iscntrl
 991#undef ispunct
 992#undef isxdigit
 993
 994extern const unsigned char sane_ctype[256];
 995#define GIT_SPACE 0x01
 996#define GIT_DIGIT 0x02
 997#define GIT_ALPHA 0x04
 998#define GIT_GLOB_SPECIAL 0x08
 999#define GIT_REGEX_SPECIAL 0x10
1000#define GIT_PATHSPEC_MAGIC 0x20
1001#define GIT_CNTRL 0x40
1002#define GIT_PUNCT 0x80
1003#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
1004#define isascii(x) (((x) & ~0x7f) == 0)
1005#define isspace(x) sane_istest(x,GIT_SPACE)
1006#define isdigit(x) sane_istest(x,GIT_DIGIT)
1007#define isalpha(x) sane_istest(x,GIT_ALPHA)
1008#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
1009#define isprint(x) ((x) >= 0x20 && (x) <= 0x7e)
1010#define islower(x) sane_iscase(x, 1)
1011#define isupper(x) sane_iscase(x, 0)
1012#define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL)
1013#define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL)
1014#define iscntrl(x) (sane_istest(x,GIT_CNTRL))
1015#define ispunct(x) sane_istest(x, GIT_PUNCT | GIT_REGEX_SPECIAL | \
1016                GIT_GLOB_SPECIAL | GIT_PATHSPEC_MAGIC)
1017#define isxdigit(x) (hexval_table[(unsigned char)(x)] != -1)
1018#define tolower(x) sane_case((unsigned char)(x), 0x20)
1019#define toupper(x) sane_case((unsigned char)(x), 0)
1020#define is_pathspec_magic(x) sane_istest(x,GIT_PATHSPEC_MAGIC)
1021
1022static inline int sane_case(int x, int high)
1023{
1024        if (sane_istest(x, GIT_ALPHA))
1025                x = (x & ~0x20) | high;
1026        return x;
1027}
1028
1029static inline int sane_iscase(int x, int is_lower)
1030{
1031        if (!sane_istest(x, GIT_ALPHA))
1032                return 0;
1033
1034        if (is_lower)
1035                return (x & 0x20) != 0;
1036        else
1037                return (x & 0x20) == 0;
1038}
1039
1040/*
1041 * Like skip_prefix, but compare case-insensitively. Note that the comparison
1042 * is done via tolower(), so it is strictly ASCII (no multi-byte characters or
1043 * locale-specific conversions).
1044 */
1045static inline int skip_iprefix(const char *str, const char *prefix,
1046                               const char **out)
1047{
1048        do {
1049                if (!*prefix) {
1050                        *out = str;
1051                        return 1;
1052                }
1053        } while (tolower(*str++) == tolower(*prefix++));
1054        return 0;
1055}
1056
1057static inline int strtoul_ui(char const *s, int base, unsigned int *result)
1058{
1059        unsigned long ul;
1060        char *p;
1061
1062        errno = 0;
1063        /* negative values would be accepted by strtoul */
1064        if (strchr(s, '-'))
1065                return -1;
1066        ul = strtoul(s, &p, base);
1067        if (errno || *p || p == s || (unsigned int) ul != ul)
1068                return -1;
1069        *result = ul;
1070        return 0;
1071}
1072
1073static inline int strtol_i(char const *s, int base, int *result)
1074{
1075        long ul;
1076        char *p;
1077
1078        errno = 0;
1079        ul = strtol(s, &p, base);
1080        if (errno || *p || p == s || (int) ul != ul)
1081                return -1;
1082        *result = ul;
1083        return 0;
1084}
1085
1086#ifdef INTERNAL_QSORT
1087void git_qsort(void *base, size_t nmemb, size_t size,
1088               int(*compar)(const void *, const void *));
1089#define qsort git_qsort
1090#endif
1091
1092#define QSORT(base, n, compar) sane_qsort((base), (n), sizeof(*(base)), compar)
1093static inline void sane_qsort(void *base, size_t nmemb, size_t size,
1094                              int(*compar)(const void *, const void *))
1095{
1096        if (nmemb > 1)
1097                qsort(base, nmemb, size, compar);
1098}
1099
1100#ifndef HAVE_ISO_QSORT_S
1101int git_qsort_s(void *base, size_t nmemb, size_t size,
1102                int (*compar)(const void *, const void *, void *), void *ctx);
1103#define qsort_s git_qsort_s
1104#endif
1105
1106#define QSORT_S(base, n, compar, ctx) do {                      \
1107        if (qsort_s((base), (n), sizeof(*(base)), compar, ctx)) \
1108                BUG("qsort_s() failed");                        \
1109} while (0)
1110
1111#ifndef REG_STARTEND
1112#error "Git requires REG_STARTEND support. Compile with NO_REGEX=NeedsStartEnd"
1113#endif
1114
1115static inline int regexec_buf(const regex_t *preg, const char *buf, size_t size,
1116                              size_t nmatch, regmatch_t pmatch[], int eflags)
1117{
1118        assert(nmatch > 0 && pmatch);
1119        pmatch[0].rm_so = 0;
1120        pmatch[0].rm_eo = size;
1121        return regexec(preg, buf, nmatch, pmatch, eflags | REG_STARTEND);
1122}
1123
1124#ifndef DIR_HAS_BSD_GROUP_SEMANTICS
1125# define FORCE_DIR_SET_GID S_ISGID
1126#else
1127# define FORCE_DIR_SET_GID 0
1128#endif
1129
1130#ifdef NO_NSEC
1131#undef USE_NSEC
1132#define ST_CTIME_NSEC(st) 0
1133#define ST_MTIME_NSEC(st) 0
1134#else
1135#ifdef USE_ST_TIMESPEC
1136#define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctimespec.tv_nsec))
1137#define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtimespec.tv_nsec))
1138#else
1139#define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctim.tv_nsec))
1140#define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtim.tv_nsec))
1141#endif
1142#endif
1143
1144#ifdef UNRELIABLE_FSTAT
1145#define fstat_is_reliable() 0
1146#else
1147#define fstat_is_reliable() 1
1148#endif
1149
1150#ifndef va_copy
1151/*
1152 * Since an obvious implementation of va_list would be to make it a
1153 * pointer into the stack frame, a simple assignment will work on
1154 * many systems.  But let's try to be more portable.
1155 */
1156#ifdef __va_copy
1157#define va_copy(dst, src) __va_copy(dst, src)
1158#else
1159#define va_copy(dst, src) ((dst) = (src))
1160#endif
1161#endif
1162
1163#if defined(__GNUC__) || (_MSC_VER >= 1400) || defined(__C99_MACRO_WITH_VA_ARGS)
1164#define HAVE_VARIADIC_MACROS 1
1165#endif
1166
1167/* usage.c: only to be used for testing BUG() implementation (see test-tool) */
1168extern int BUG_exit_code;
1169
1170#ifdef HAVE_VARIADIC_MACROS
1171__attribute__((format (printf, 3, 4))) NORETURN
1172void BUG_fl(const char *file, int line, const char *fmt, ...);
1173#define BUG(...) BUG_fl(__FILE__, __LINE__, __VA_ARGS__)
1174#else
1175__attribute__((format (printf, 1, 2))) NORETURN
1176void BUG(const char *fmt, ...);
1177#endif
1178
1179/*
1180 * Preserves errno, prints a message, but gives no warning for ENOENT.
1181 * Returns 0 on success, which includes trying to unlink an object that does
1182 * not exist.
1183 */
1184int unlink_or_warn(const char *path);
1185 /*
1186  * Tries to unlink file.  Returns 0 if unlink succeeded
1187  * or the file already didn't exist.  Returns -1 and
1188  * appends a message to err suitable for
1189  * 'error("%s", err->buf)' on error.
1190  */
1191int unlink_or_msg(const char *file, struct strbuf *err);
1192/*
1193 * Preserves errno, prints a message, but gives no warning for ENOENT.
1194 * Returns 0 on success, which includes trying to remove a directory that does
1195 * not exist.
1196 */
1197int rmdir_or_warn(const char *path);
1198/*
1199 * Calls the correct function out of {unlink,rmdir}_or_warn based on
1200 * the supplied file mode.
1201 */
1202int remove_or_warn(unsigned int mode, const char *path);
1203
1204/*
1205 * Call access(2), but warn for any error except "missing file"
1206 * (ENOENT or ENOTDIR).
1207 */
1208#define ACCESS_EACCES_OK (1U << 0)
1209int access_or_warn(const char *path, int mode, unsigned flag);
1210int access_or_die(const char *path, int mode, unsigned flag);
1211
1212/* Warn on an inaccessible file if errno indicates this is an error */
1213int warn_on_fopen_errors(const char *path);
1214
1215#ifdef GMTIME_UNRELIABLE_ERRORS
1216struct tm *git_gmtime(const time_t *);
1217struct tm *git_gmtime_r(const time_t *, struct tm *);
1218#define gmtime git_gmtime
1219#define gmtime_r git_gmtime_r
1220#endif
1221
1222#if !defined(USE_PARENS_AROUND_GETTEXT_N) && defined(__GNUC__)
1223#define USE_PARENS_AROUND_GETTEXT_N 1
1224#endif
1225
1226#ifndef SHELL_PATH
1227# define SHELL_PATH "/bin/sh"
1228#endif
1229
1230#ifndef _POSIX_THREAD_SAFE_FUNCTIONS
1231#define flockfile(fh)
1232#define funlockfile(fh)
1233#define getc_unlocked(fh) getc(fh)
1234#endif
1235
1236/*
1237 * Our code often opens a path to an optional file, to work on its
1238 * contents when we can successfully open it.  We can ignore a failure
1239 * to open if such an optional file does not exist, but we do want to
1240 * report a failure in opening for other reasons (e.g. we got an I/O
1241 * error, or the file is there, but we lack the permission to open).
1242 *
1243 * Call this function after seeing an error from open() or fopen() to
1244 * see if the errno indicates a missing file that we can safely ignore.
1245 */
1246static inline int is_missing_file_error(int errno_)
1247{
1248        return (errno_ == ENOENT || errno_ == ENOTDIR);
1249}
1250
1251extern int cmd_main(int, const char **);
1252
1253/*
1254 * You can mark a stack variable with UNLEAK(var) to avoid it being
1255 * reported as a leak by tools like LSAN or valgrind. The argument
1256 * should generally be the variable itself (not its address and not what
1257 * it points to). It's safe to use this on pointers which may already
1258 * have been freed, or on pointers which may still be in use.
1259 *
1260 * Use this _only_ for a variable that leaks by going out of scope at
1261 * program exit (so only from cmd_* functions or their direct helpers).
1262 * Normal functions, especially those which may be called multiple
1263 * times, should actually free their memory. This is only meant as
1264 * an annotation, and does nothing in non-leak-checking builds.
1265 */
1266#ifdef SUPPRESS_ANNOTATED_LEAKS
1267extern void unleak_memory(const void *ptr, size_t len);
1268#define UNLEAK(var) unleak_memory(&(var), sizeof(var))
1269#else
1270#define UNLEAK(var) do {} while (0)
1271#endif
1272
1273/*
1274 * This include must come after system headers, since it introduces macros that
1275 * replace system names.
1276 */
1277#include "banned.h"
1278
1279#endif