t/helper: ignore only executable files
[git/git.git] / git-compat-util.h
1 #ifndef GIT_COMPAT_UTIL_H
2 #define GIT_COMPAT_UTIL_H
3
4 #ifdef USE_MSVC_CRTDBG
5 /*
6 * For these to work they must appear very early in each
7 * file -- before most of the standard header files.
8 */
9 #include <stdlib.h>
10 #include <crtdbg.h>
11 #endif
12
13 #define _FILE_OFFSET_BITS 64
14
15
16 /* Derived from Linux "Features Test Macro" header
17 * Convenience macros to test the versions of gcc (or
18 * a compatible compiler).
19 * Use them like this:
20 * #if GIT_GNUC_PREREQ (2,8)
21 * ... code requiring gcc 2.8 or later ...
22 * #endif
23 */
24 #if defined(__GNUC__) && defined(__GNUC_MINOR__)
25 # define GIT_GNUC_PREREQ(maj, min) \
26 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
27 #else
28 #define GIT_GNUC_PREREQ(maj, min) 0
29 #endif
30
31
32 #ifndef FLEX_ARRAY
33 /*
34 * See if our compiler is known to support flexible array members.
35 */
36 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && (!defined(__SUNPRO_C) || (__SUNPRO_C > 0x580))
37 # define FLEX_ARRAY /* empty */
38 #elif defined(__GNUC__)
39 # if (__GNUC__ >= 3)
40 # define FLEX_ARRAY /* empty */
41 # else
42 # define FLEX_ARRAY 0 /* older GNU extension */
43 # endif
44 #endif
45
46 /*
47 * Otherwise, default to safer but a bit wasteful traditional style
48 */
49 #ifndef FLEX_ARRAY
50 # define FLEX_ARRAY 1
51 #endif
52 #endif
53
54
55 /*
56 * BUILD_ASSERT_OR_ZERO - assert a build-time dependency, as an expression.
57 * @cond: the compile-time condition which must be true.
58 *
59 * Your compile will fail if the condition isn't true, or can't be evaluated
60 * by the compiler. This can be used in an expression: its value is "0".
61 *
62 * Example:
63 * #define foo_to_char(foo) \
64 * ((char *)(foo) \
65 * + BUILD_ASSERT_OR_ZERO(offsetof(struct foo, string) == 0))
66 */
67 #define BUILD_ASSERT_OR_ZERO(cond) \
68 (sizeof(char [1 - 2*!(cond)]) - 1)
69
70 #if GIT_GNUC_PREREQ(3, 1)
71 /* &arr[0] degrades to a pointer: a different type from an array */
72 # define BARF_UNLESS_AN_ARRAY(arr) \
73 BUILD_ASSERT_OR_ZERO(!__builtin_types_compatible_p(__typeof__(arr), \
74 __typeof__(&(arr)[0])))
75 #else
76 # define BARF_UNLESS_AN_ARRAY(arr) 0
77 #endif
78 /*
79 * ARRAY_SIZE - get the number of elements in a visible array
80 * <at> x: the array whose size you want.
81 *
82 * This does not work on pointers, or arrays declared as [], or
83 * function parameters. With correct compiler support, such usage
84 * will cause a build error (see the build_assert_or_zero macro).
85 */
86 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]) + BARF_UNLESS_AN_ARRAY(x))
87
88 #define bitsizeof(x) (CHAR_BIT * sizeof(x))
89
90 #define maximum_signed_value_of_type(a) \
91 (INTMAX_MAX >> (bitsizeof(intmax_t) - bitsizeof(a)))
92
93 #define maximum_unsigned_value_of_type(a) \
94 (UINTMAX_MAX >> (bitsizeof(uintmax_t) - bitsizeof(a)))
95
96 /*
97 * Signed integer overflow is undefined in C, so here's a helper macro
98 * to detect if the sum of two integers will overflow.
99 *
100 * Requires: a >= 0, typeof(a) equals typeof(b)
101 */
102 #define signed_add_overflows(a, b) \
103 ((b) > maximum_signed_value_of_type(a) - (a))
104
105 #define unsigned_add_overflows(a, b) \
106 ((b) > maximum_unsigned_value_of_type(a) - (a))
107
108 /*
109 * Returns true if the multiplication of "a" and "b" will
110 * overflow. The types of "a" and "b" must match and must be unsigned.
111 * Note that this macro evaluates "a" twice!
112 */
113 #define unsigned_mult_overflows(a, b) \
114 ((a) && (b) > maximum_unsigned_value_of_type(a) / (a))
115
116 #ifdef __GNUC__
117 #define TYPEOF(x) (__typeof__(x))
118 #else
119 #define TYPEOF(x)
120 #endif
121
122 #define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (bitsizeof(x) - (bits))))
123 #define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */
124
125 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
126
127 /* Approximation of the length of the decimal representation of this type. */
128 #define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1)
129
130 #if defined(__sun__)
131 /*
132 * On Solaris, when _XOPEN_EXTENDED is set, its header file
133 * forces the programs to be XPG4v2, defeating any _XOPEN_SOURCE
134 * setting to say we are XPG5 or XPG6. Also on Solaris,
135 * XPG6 programs must be compiled with a c99 compiler, while
136 * non XPG6 programs must be compiled with a pre-c99 compiler.
137 */
138 # if __STDC_VERSION__ - 0 >= 199901L
139 # define _XOPEN_SOURCE 600
140 # else
141 # define _XOPEN_SOURCE 500
142 # endif
143 #elif !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__USLC__) && \
144 !defined(_M_UNIX) && !defined(__sgi) && !defined(__DragonFly__) && \
145 !defined(__TANDEM) && !defined(__QNX__) && !defined(__MirBSD__) && \
146 !defined(__CYGWIN__)
147 #define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */
148 #define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */
149 #endif
150 #define _ALL_SOURCE 1
151 #define _GNU_SOURCE 1
152 #define _BSD_SOURCE 1
153 #define _DEFAULT_SOURCE 1
154 #define _NETBSD_SOURCE 1
155 #define _SGI_SOURCE 1
156
157 #if defined(WIN32) && !defined(__CYGWIN__) /* Both MinGW and MSVC */
158 # if !defined(_WIN32_WINNT)
159 # define _WIN32_WINNT 0x0600
160 # endif
161 #define WIN32_LEAN_AND_MEAN /* stops windows.h including winsock.h */
162 #include <winsock2.h>
163 #include <windows.h>
164 #define GIT_WINDOWS_NATIVE
165 #endif
166
167 #include <unistd.h>
168 #include <stdio.h>
169 #include <sys/stat.h>
170 #include <fcntl.h>
171 #include <stddef.h>
172 #include <stdlib.h>
173 #include <stdarg.h>
174 #include <string.h>
175 #ifdef HAVE_STRINGS_H
176 #include <strings.h> /* for strcasecmp() */
177 #endif
178 #include <errno.h>
179 #include <limits.h>
180 #ifdef NEEDS_SYS_PARAM_H
181 #include <sys/param.h>
182 #endif
183 #include <sys/types.h>
184 #include <dirent.h>
185 #include <sys/time.h>
186 #include <time.h>
187 #include <signal.h>
188 #include <assert.h>
189 #include <regex.h>
190 #include <utime.h>
191 #include <syslog.h>
192 #if !defined(NO_POLL_H)
193 #include <poll.h>
194 #elif !defined(NO_SYS_POLL_H)
195 #include <sys/poll.h>
196 #else
197 /* Pull the compat stuff */
198 #include <poll.h>
199 #endif
200 #ifdef HAVE_BSD_SYSCTL
201 #include <sys/sysctl.h>
202 #endif
203
204 #if defined(__CYGWIN__)
205 #include "compat/win32/path-utils.h"
206 #endif
207 #if defined(__MINGW32__)
208 /* pull in Windows compatibility stuff */
209 #include "compat/win32/path-utils.h"
210 #include "compat/mingw.h"
211 #elif defined(_MSC_VER)
212 #include "compat/win32/path-utils.h"
213 #include "compat/msvc.h"
214 #else
215 #include <sys/utsname.h>
216 #include <sys/wait.h>
217 #include <sys/resource.h>
218 #include <sys/socket.h>
219 #include <sys/ioctl.h>
220 #include <termios.h>
221 #ifndef NO_SYS_SELECT_H
222 #include <sys/select.h>
223 #endif
224 #include <netinet/in.h>
225 #include <netinet/tcp.h>
226 #include <arpa/inet.h>
227 #include <netdb.h>
228 #include <pwd.h>
229 #include <sys/un.h>
230 #ifndef NO_INTTYPES_H
231 #include <inttypes.h>
232 #else
233 #include <stdint.h>
234 #endif
235 #ifdef NO_INTPTR_T
236 /*
237 * On I16LP32, ILP32 and LP64 "long" is the safe bet, however
238 * on LLP86, IL33LLP64 and P64 it needs to be "long long",
239 * while on IP16 and IP16L32 it is "int" (resp. "short")
240 * Size needs to match (or exceed) 'sizeof(void *)'.
241 * We can't take "long long" here as not everybody has it.
242 */
243 typedef long intptr_t;
244 typedef unsigned long uintptr_t;
245 #endif
246 #undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */
247 #include <grp.h>
248 #define _ALL_SOURCE 1
249 #endif
250
251 /* used on Mac OS X */
252 #ifdef PRECOMPOSE_UNICODE
253 #include "compat/precompose_utf8.h"
254 #else
255 #define precompose_str(in,i_nfd2nfc)
256 #define precompose_argv(c,v)
257 #define probe_utf8_pathname_composition()
258 #endif
259
260 #ifdef MKDIR_WO_TRAILING_SLASH
261 #define mkdir(a,b) compat_mkdir_wo_trailing_slash((a),(b))
262 int compat_mkdir_wo_trailing_slash(const char*, mode_t);
263 #endif
264
265 #ifdef NO_STRUCT_ITIMERVAL
266 struct itimerval {
267 struct timeval it_interval;
268 struct timeval it_value;
269 };
270 #endif
271
272 #ifdef NO_SETITIMER
273 #define setitimer(which,value,ovalue)
274 #endif
275
276 #ifndef NO_LIBGEN_H
277 #include <libgen.h>
278 #else
279 #define basename gitbasename
280 char *gitbasename(char *);
281 #define dirname gitdirname
282 char *gitdirname(char *);
283 #endif
284
285 #ifndef NO_ICONV
286 #include <iconv.h>
287 #endif
288
289 #ifndef NO_OPENSSL
290 #ifdef __APPLE__
291 #define __AVAILABILITY_MACROS_USES_AVAILABILITY 0
292 #include <AvailabilityMacros.h>
293 #undef DEPRECATED_ATTRIBUTE
294 #define DEPRECATED_ATTRIBUTE
295 #undef __AVAILABILITY_MACROS_USES_AVAILABILITY
296 #endif
297 #include <openssl/ssl.h>
298 #include <openssl/err.h>
299 #endif
300
301 #ifdef HAVE_SYSINFO
302 # include <sys/sysinfo.h>
303 #endif
304
305 /* On most systems <netdb.h> would have given us this, but
306 * not on some systems (e.g. z/OS).
307 */
308 #ifndef NI_MAXHOST
309 #define NI_MAXHOST 1025
310 #endif
311
312 #ifndef NI_MAXSERV
313 #define NI_MAXSERV 32
314 #endif
315
316 /* On most systems <limits.h> would have given us this, but
317 * not on some systems (e.g. GNU/Hurd).
318 */
319 #ifndef PATH_MAX
320 #define PATH_MAX 4096
321 #endif
322
323 #ifndef PRIuMAX
324 #define PRIuMAX "llu"
325 #endif
326
327 #ifndef SCNuMAX
328 #define SCNuMAX PRIuMAX
329 #endif
330
331 #ifndef PRIu32
332 #define PRIu32 "u"
333 #endif
334
335 #ifndef PRIx32
336 #define PRIx32 "x"
337 #endif
338
339 #ifndef PRIo32
340 #define PRIo32 "o"
341 #endif
342
343 typedef uintmax_t timestamp_t;
344 #define PRItime PRIuMAX
345 #define parse_timestamp strtoumax
346 #define TIME_MAX UINTMAX_MAX
347
348 #ifndef PATH_SEP
349 #define PATH_SEP ':'
350 #endif
351
352 #ifdef HAVE_PATHS_H
353 #include <paths.h>
354 #endif
355 #ifndef _PATH_DEFPATH
356 #define _PATH_DEFPATH "/usr/local/bin:/usr/bin:/bin"
357 #endif
358
359 #ifndef platform_core_config
360 static inline int noop_core_config(const char *var, const char *value, void *cb)
361 {
362 return 0;
363 }
364 #define platform_core_config noop_core_config
365 #endif
366
367 #ifndef has_dos_drive_prefix
368 static inline int git_has_dos_drive_prefix(const char *path)
369 {
370 return 0;
371 }
372 #define has_dos_drive_prefix git_has_dos_drive_prefix
373 #endif
374
375 #ifndef skip_dos_drive_prefix
376 static inline int git_skip_dos_drive_prefix(char **path)
377 {
378 return 0;
379 }
380 #define skip_dos_drive_prefix git_skip_dos_drive_prefix
381 #endif
382
383 #ifndef is_dir_sep
384 static inline int git_is_dir_sep(int c)
385 {
386 return c == '/';
387 }
388 #define is_dir_sep git_is_dir_sep
389 #endif
390
391 #ifndef offset_1st_component
392 static inline int git_offset_1st_component(const char *path)
393 {
394 return is_dir_sep(path[0]);
395 }
396 #define offset_1st_component git_offset_1st_component
397 #endif
398
399 #ifndef find_last_dir_sep
400 static inline char *git_find_last_dir_sep(const char *path)
401 {
402 return strrchr(path, '/');
403 }
404 #define find_last_dir_sep git_find_last_dir_sep
405 #endif
406
407 #ifndef query_user_email
408 #define query_user_email() NULL
409 #endif
410
411 #ifdef __TANDEM
412 #include <floss.h(floss_execl,floss_execlp,floss_execv,floss_execvp)>
413 #include <floss.h(floss_getpwuid)>
414 #ifndef NSIG
415 /*
416 * NonStop NSE and NSX do not provide NSIG. SIGGUARDIAN(99) is the highest
417 * known, by detective work using kill -l as a list is all signals
418 * instead of signal.h where it should be.
419 */
420 # define NSIG 100
421 #endif
422 #endif
423
424 #if defined(__HP_cc) && (__HP_cc >= 61000)
425 #define NORETURN __attribute__((noreturn))
426 #define NORETURN_PTR
427 #elif defined(__GNUC__) && !defined(NO_NORETURN)
428 #define NORETURN __attribute__((__noreturn__))
429 #define NORETURN_PTR __attribute__((__noreturn__))
430 #elif defined(_MSC_VER)
431 #define NORETURN __declspec(noreturn)
432 #define NORETURN_PTR
433 #else
434 #define NORETURN
435 #define NORETURN_PTR
436 #ifndef __GNUC__
437 #ifndef __attribute__
438 #define __attribute__(x)
439 #endif
440 #endif
441 #endif
442
443 /* The sentinel attribute is valid from gcc version 4.0 */
444 #if defined(__GNUC__) && (__GNUC__ >= 4)
445 #define LAST_ARG_MUST_BE_NULL __attribute__((sentinel))
446 #else
447 #define LAST_ARG_MUST_BE_NULL
448 #endif
449
450 #define MAYBE_UNUSED __attribute__((__unused__))
451
452 #include "compat/bswap.h"
453
454 #include "wildmatch.h"
455
456 struct strbuf;
457
458 /* General helper functions */
459 void vreportf(const char *prefix, const char *err, va_list params);
460 NORETURN void usage(const char *err);
461 NORETURN void usagef(const char *err, ...) __attribute__((format (printf, 1, 2)));
462 NORETURN void die(const char *err, ...) __attribute__((format (printf, 1, 2)));
463 NORETURN void die_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
464 int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
465 int error_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
466 void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
467 void warning_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
468
469 #ifndef NO_OPENSSL
470 #ifdef APPLE_COMMON_CRYPTO
471 #include "compat/apple-common-crypto.h"
472 #else
473 #include <openssl/evp.h>
474 #include <openssl/hmac.h>
475 #endif /* APPLE_COMMON_CRYPTO */
476 #include <openssl/x509v3.h>
477 #endif /* NO_OPENSSL */
478
479 /*
480 * Let callers be aware of the constant return value; this can help
481 * gcc with -Wuninitialized analysis. We restrict this trick to gcc, though,
482 * because some compilers may not support variadic macros. Since we're only
483 * trying to help gcc, anyway, it's OK; other compilers will fall back to
484 * using the function as usual.
485 */
486 #if defined(__GNUC__)
487 static inline int const_error(void)
488 {
489 return -1;
490 }
491 #define error(...) (error(__VA_ARGS__), const_error())
492 #define error_errno(...) (error_errno(__VA_ARGS__), const_error())
493 #endif
494
495 void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params));
496 void set_error_routine(void (*routine)(const char *err, va_list params));
497 extern void (*get_error_routine(void))(const char *err, va_list params);
498 void set_warn_routine(void (*routine)(const char *warn, va_list params));
499 extern void (*get_warn_routine(void))(const char *warn, va_list params);
500 void set_die_is_recursing_routine(int (*routine)(void));
501
502 int starts_with(const char *str, const char *prefix);
503 int istarts_with(const char *str, const char *prefix);
504
505 /*
506 * If the string "str" begins with the string found in "prefix", return 1.
507 * The "out" parameter is set to "str + strlen(prefix)" (i.e., to the point in
508 * the string right after the prefix).
509 *
510 * Otherwise, return 0 and leave "out" untouched.
511 *
512 * Examples:
513 *
514 * [extract branch name, fail if not a branch]
515 * if (!skip_prefix(ref, "refs/heads/", &branch)
516 * return -1;
517 *
518 * [skip prefix if present, otherwise use whole string]
519 * skip_prefix(name, "refs/heads/", &name);
520 */
521 static inline int skip_prefix(const char *str, const char *prefix,
522 const char **out)
523 {
524 do {
525 if (!*prefix) {
526 *out = str;
527 return 1;
528 }
529 } while (*str++ == *prefix++);
530 return 0;
531 }
532
533 /*
534 * If the string "str" is the same as the string in "prefix", then the "arg"
535 * parameter is set to the "def" parameter and 1 is returned.
536 * If the string "str" begins with the string found in "prefix" and then a
537 * "=" sign, then the "arg" parameter is set to "str + strlen(prefix) + 1"
538 * (i.e., to the point in the string right after the prefix and the "=" sign),
539 * and 1 is returned.
540 *
541 * Otherwise, return 0 and leave "arg" untouched.
542 *
543 * When we accept both a "--key" and a "--key=<val>" option, this function
544 * can be used instead of !strcmp(arg, "--key") and then
545 * skip_prefix(arg, "--key=", &arg) to parse such an option.
546 */
547 int skip_to_optional_arg_default(const char *str, const char *prefix,
548 const char **arg, const char *def);
549
550 static inline int skip_to_optional_arg(const char *str, const char *prefix,
551 const char **arg)
552 {
553 return skip_to_optional_arg_default(str, prefix, arg, "");
554 }
555
556 /*
557 * Like skip_prefix, but promises never to read past "len" bytes of the input
558 * buffer, and returns the remaining number of bytes in "out" via "outlen".
559 */
560 static inline int skip_prefix_mem(const char *buf, size_t len,
561 const char *prefix,
562 const char **out, size_t *outlen)
563 {
564 size_t prefix_len = strlen(prefix);
565 if (prefix_len <= len && !memcmp(buf, prefix, prefix_len)) {
566 *out = buf + prefix_len;
567 *outlen = len - prefix_len;
568 return 1;
569 }
570 return 0;
571 }
572
573 /*
574 * If buf ends with suffix, return 1 and subtract the length of the suffix
575 * from *len. Otherwise, return 0 and leave *len untouched.
576 */
577 static inline int strip_suffix_mem(const char *buf, size_t *len,
578 const char *suffix)
579 {
580 size_t suflen = strlen(suffix);
581 if (*len < suflen || memcmp(buf + (*len - suflen), suffix, suflen))
582 return 0;
583 *len -= suflen;
584 return 1;
585 }
586
587 /*
588 * If str ends with suffix, return 1 and set *len to the size of the string
589 * without the suffix. Otherwise, return 0 and set *len to the size of the
590 * string.
591 *
592 * Note that we do _not_ NUL-terminate str to the new length.
593 */
594 static inline int strip_suffix(const char *str, const char *suffix, size_t *len)
595 {
596 *len = strlen(str);
597 return strip_suffix_mem(str, len, suffix);
598 }
599
600 static inline int ends_with(const char *str, const char *suffix)
601 {
602 size_t len;
603 return strip_suffix(str, suffix, &len);
604 }
605
606 #define SWAP(a, b) do { \
607 void *_swap_a_ptr = &(a); \
608 void *_swap_b_ptr = &(b); \
609 unsigned char _swap_buffer[sizeof(a)]; \
610 memcpy(_swap_buffer, _swap_a_ptr, sizeof(a)); \
611 memcpy(_swap_a_ptr, _swap_b_ptr, sizeof(a) + \
612 BUILD_ASSERT_OR_ZERO(sizeof(a) == sizeof(b))); \
613 memcpy(_swap_b_ptr, _swap_buffer, sizeof(a)); \
614 } while (0)
615
616 #if defined(NO_MMAP) || defined(USE_WIN32_MMAP)
617
618 #ifndef PROT_READ
619 #define PROT_READ 1
620 #define PROT_WRITE 2
621 #define MAP_PRIVATE 1
622 #endif
623
624 #define mmap git_mmap
625 #define munmap git_munmap
626 void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);
627 int git_munmap(void *start, size_t length);
628
629 #else /* NO_MMAP || USE_WIN32_MMAP */
630
631 #include <sys/mman.h>
632
633 #endif /* NO_MMAP || USE_WIN32_MMAP */
634
635 #ifdef NO_MMAP
636
637 /* This value must be multiple of (pagesize * 2) */
638 #define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024)
639
640 #else /* NO_MMAP */
641
642 /* This value must be multiple of (pagesize * 2) */
643 #define DEFAULT_PACKED_GIT_WINDOW_SIZE \
644 (sizeof(void*) >= 8 \
645 ? 1 * 1024 * 1024 * 1024 \
646 : 32 * 1024 * 1024)
647
648 #endif /* NO_MMAP */
649
650 #ifndef MAP_FAILED
651 #define MAP_FAILED ((void *)-1)
652 #endif
653
654 #ifdef NO_ST_BLOCKS_IN_STRUCT_STAT
655 #define on_disk_bytes(st) ((st).st_size)
656 #else
657 #define on_disk_bytes(st) ((st).st_blocks * 512)
658 #endif
659
660 #ifdef NEEDS_MODE_TRANSLATION
661 #undef S_IFMT
662 #undef S_IFREG
663 #undef S_IFDIR
664 #undef S_IFLNK
665 #undef S_IFBLK
666 #undef S_IFCHR
667 #undef S_IFIFO
668 #undef S_IFSOCK
669 #define S_IFMT 0170000
670 #define S_IFREG 0100000
671 #define S_IFDIR 0040000
672 #define S_IFLNK 0120000
673 #define S_IFBLK 0060000
674 #define S_IFCHR 0020000
675 #define S_IFIFO 0010000
676 #define S_IFSOCK 0140000
677 #ifdef stat
678 #undef stat
679 #endif
680 #define stat(path, buf) git_stat(path, buf)
681 int git_stat(const char *, struct stat *);
682 #ifdef fstat
683 #undef fstat
684 #endif
685 #define fstat(fd, buf) git_fstat(fd, buf)
686 int git_fstat(int, struct stat *);
687 #ifdef lstat
688 #undef lstat
689 #endif
690 #define lstat(path, buf) git_lstat(path, buf)
691 int git_lstat(const char *, struct stat *);
692 #endif
693
694 #define DEFAULT_PACKED_GIT_LIMIT \
695 ((1024L * 1024L) * (size_t)(sizeof(void*) >= 8 ? (32 * 1024L * 1024L) : 256))
696
697 #ifdef NO_PREAD
698 #define pread git_pread
699 ssize_t git_pread(int fd, void *buf, size_t count, off_t offset);
700 #endif
701 /*
702 * Forward decl that will remind us if its twin in cache.h changes.
703 * This function is used in compat/pread.c. But we can't include
704 * cache.h there.
705 */
706 ssize_t read_in_full(int fd, void *buf, size_t count);
707
708 #ifdef NO_SETENV
709 #define setenv gitsetenv
710 int gitsetenv(const char *, const char *, int);
711 #endif
712
713 #ifdef NO_MKDTEMP
714 #define mkdtemp gitmkdtemp
715 char *gitmkdtemp(char *);
716 #endif
717
718 #ifdef NO_UNSETENV
719 #define unsetenv gitunsetenv
720 void gitunsetenv(const char *);
721 #endif
722
723 #ifdef NO_STRCASESTR
724 #define strcasestr gitstrcasestr
725 char *gitstrcasestr(const char *haystack, const char *needle);
726 #endif
727
728 #ifdef NO_STRLCPY
729 #define strlcpy gitstrlcpy
730 size_t gitstrlcpy(char *, const char *, size_t);
731 #endif
732
733 #ifdef NO_STRTOUMAX
734 #define strtoumax gitstrtoumax
735 uintmax_t gitstrtoumax(const char *, char **, int);
736 #define strtoimax gitstrtoimax
737 intmax_t gitstrtoimax(const char *, char **, int);
738 #endif
739
740 #ifdef NO_HSTRERROR
741 #define hstrerror githstrerror
742 const char *githstrerror(int herror);
743 #endif
744
745 #ifdef NO_MEMMEM
746 #define memmem gitmemmem
747 void *gitmemmem(const void *haystack, size_t haystacklen,
748 const void *needle, size_t needlelen);
749 #endif
750
751 #ifdef OVERRIDE_STRDUP
752 #ifdef strdup
753 #undef strdup
754 #endif
755 #define strdup gitstrdup
756 char *gitstrdup(const char *s);
757 #endif
758
759 #ifdef NO_GETPAGESIZE
760 #define getpagesize() sysconf(_SC_PAGESIZE)
761 #endif
762
763 #ifndef O_CLOEXEC
764 #define O_CLOEXEC 0
765 #endif
766
767 #ifdef FREAD_READS_DIRECTORIES
768 # if !defined(SUPPRESS_FOPEN_REDEFINITION)
769 # ifdef fopen
770 # undef fopen
771 # endif
772 # define fopen(a,b) git_fopen(a,b)
773 # endif
774 FILE *git_fopen(const char*, const char*);
775 #endif
776
777 #ifdef SNPRINTF_RETURNS_BOGUS
778 #ifdef snprintf
779 #undef snprintf
780 #endif
781 #define snprintf git_snprintf
782 int git_snprintf(char *str, size_t maxsize,
783 const char *format, ...);
784 #ifdef vsnprintf
785 #undef vsnprintf
786 #endif
787 #define vsnprintf git_vsnprintf
788 int git_vsnprintf(char *str, size_t maxsize,
789 const char *format, va_list ap);
790 #endif
791
792 #ifdef __GLIBC_PREREQ
793 #if __GLIBC_PREREQ(2, 1)
794 #define HAVE_STRCHRNUL
795 #endif
796 #endif
797
798 #ifndef HAVE_STRCHRNUL
799 #define strchrnul gitstrchrnul
800 static inline char *gitstrchrnul(const char *s, int c)
801 {
802 while (*s && *s != c)
803 s++;
804 return (char *)s;
805 }
806 #endif
807
808 #ifdef NO_INET_PTON
809 int inet_pton(int af, const char *src, void *dst);
810 #endif
811
812 #ifdef NO_INET_NTOP
813 const char *inet_ntop(int af, const void *src, char *dst, size_t size);
814 #endif
815
816 #ifdef NO_PTHREADS
817 #define atexit git_atexit
818 int git_atexit(void (*handler)(void));
819 #endif
820
821 typedef void (*try_to_free_t)(size_t);
822 try_to_free_t set_try_to_free_routine(try_to_free_t);
823
824 static inline size_t st_add(size_t a, size_t b)
825 {
826 if (unsigned_add_overflows(a, b))
827 die("size_t overflow: %"PRIuMAX" + %"PRIuMAX,
828 (uintmax_t)a, (uintmax_t)b);
829 return a + b;
830 }
831 #define st_add3(a,b,c) st_add(st_add((a),(b)),(c))
832 #define st_add4(a,b,c,d) st_add(st_add3((a),(b),(c)),(d))
833
834 static inline size_t st_mult(size_t a, size_t b)
835 {
836 if (unsigned_mult_overflows(a, b))
837 die("size_t overflow: %"PRIuMAX" * %"PRIuMAX,
838 (uintmax_t)a, (uintmax_t)b);
839 return a * b;
840 }
841
842 static inline size_t st_sub(size_t a, size_t b)
843 {
844 if (a < b)
845 die("size_t underflow: %"PRIuMAX" - %"PRIuMAX,
846 (uintmax_t)a, (uintmax_t)b);
847 return a - b;
848 }
849
850 #ifdef HAVE_ALLOCA_H
851 # include <alloca.h>
852 # define xalloca(size) (alloca(size))
853 # define xalloca_free(p) do {} while (0)
854 #else
855 # define xalloca(size) (xmalloc(size))
856 # define xalloca_free(p) (free(p))
857 #endif
858 char *xstrdup(const char *str);
859 void *xmalloc(size_t size);
860 void *xmallocz(size_t size);
861 void *xmallocz_gently(size_t size);
862 void *xmemdupz(const void *data, size_t len);
863 char *xstrndup(const char *str, size_t len);
864 void *xrealloc(void *ptr, size_t size);
865 void *xcalloc(size_t nmemb, size_t size);
866 void *xmmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);
867 void *xmmap_gently(void *start, size_t length, int prot, int flags, int fd, off_t offset);
868 int xopen(const char *path, int flags, ...);
869 ssize_t xread(int fd, void *buf, size_t len);
870 ssize_t xwrite(int fd, const void *buf, size_t len);
871 ssize_t xpread(int fd, void *buf, size_t len, off_t offset);
872 int xdup(int fd);
873 FILE *xfopen(const char *path, const char *mode);
874 FILE *xfdopen(int fd, const char *mode);
875 int xmkstemp(char *temp_filename);
876 int xmkstemp_mode(char *temp_filename, int mode);
877 char *xgetcwd(void);
878 FILE *fopen_for_writing(const char *path);
879 FILE *fopen_or_warn(const char *path, const char *mode);
880
881 /*
882 * FREE_AND_NULL(ptr) is like free(ptr) followed by ptr = NULL. Note
883 * that ptr is used twice, so don't pass e.g. ptr++.
884 */
885 #define FREE_AND_NULL(p) do { free(p); (p) = NULL; } while (0)
886
887 #define ALLOC_ARRAY(x, alloc) (x) = xmalloc(st_mult(sizeof(*(x)), (alloc)))
888 #define CALLOC_ARRAY(x, alloc) (x) = xcalloc((alloc), sizeof(*(x)));
889 #define REALLOC_ARRAY(x, alloc) (x) = xrealloc((x), st_mult(sizeof(*(x)), (alloc)))
890
891 #define COPY_ARRAY(dst, src, n) copy_array((dst), (src), (n), sizeof(*(dst)) + \
892 BUILD_ASSERT_OR_ZERO(sizeof(*(dst)) == sizeof(*(src))))
893 static inline void copy_array(void *dst, const void *src, size_t n, size_t size)
894 {
895 if (n)
896 memcpy(dst, src, st_mult(size, n));
897 }
898
899 #define MOVE_ARRAY(dst, src, n) move_array((dst), (src), (n), sizeof(*(dst)) + \
900 BUILD_ASSERT_OR_ZERO(sizeof(*(dst)) == sizeof(*(src))))
901 static inline void move_array(void *dst, const void *src, size_t n, size_t size)
902 {
903 if (n)
904 memmove(dst, src, st_mult(size, n));
905 }
906
907 /*
908 * These functions help you allocate structs with flex arrays, and copy
909 * the data directly into the array. For example, if you had:
910 *
911 * struct foo {
912 * int bar;
913 * char name[FLEX_ARRAY];
914 * };
915 *
916 * you can do:
917 *
918 * struct foo *f;
919 * FLEX_ALLOC_MEM(f, name, src, len);
920 *
921 * to allocate a "foo" with the contents of "src" in the "name" field.
922 * The resulting struct is automatically zero'd, and the flex-array field
923 * is NUL-terminated (whether the incoming src buffer was or not).
924 *
925 * The FLEXPTR_* variants operate on structs that don't use flex-arrays,
926 * but do want to store a pointer to some extra data in the same allocated
927 * block. For example, if you have:
928 *
929 * struct foo {
930 * char *name;
931 * int bar;
932 * };
933 *
934 * you can do:
935 *
936 * struct foo *f;
937 * FLEXPTR_ALLOC_STR(f, name, src);
938 *
939 * and "name" will point to a block of memory after the struct, which will be
940 * freed along with the struct (but the pointer can be repointed anywhere).
941 *
942 * The *_STR variants accept a string parameter rather than a ptr/len
943 * combination.
944 *
945 * Note that these macros will evaluate the first parameter multiple
946 * times, and it must be assignable as an lvalue.
947 */
948 #define FLEX_ALLOC_MEM(x, flexname, buf, len) do { \
949 size_t flex_array_len_ = (len); \
950 (x) = xcalloc(1, st_add3(sizeof(*(x)), flex_array_len_, 1)); \
951 memcpy((void *)(x)->flexname, (buf), flex_array_len_); \
952 } while (0)
953 #define FLEXPTR_ALLOC_MEM(x, ptrname, buf, len) do { \
954 size_t flex_array_len_ = (len); \
955 (x) = xcalloc(1, st_add3(sizeof(*(x)), flex_array_len_, 1)); \
956 memcpy((x) + 1, (buf), flex_array_len_); \
957 (x)->ptrname = (void *)((x)+1); \
958 } while(0)
959 #define FLEX_ALLOC_STR(x, flexname, str) \
960 FLEX_ALLOC_MEM((x), flexname, (str), strlen(str))
961 #define FLEXPTR_ALLOC_STR(x, ptrname, str) \
962 FLEXPTR_ALLOC_MEM((x), ptrname, (str), strlen(str))
963
964 static inline char *xstrdup_or_null(const char *str)
965 {
966 return str ? xstrdup(str) : NULL;
967 }
968
969 static inline size_t xsize_t(off_t len)
970 {
971 size_t size = (size_t) len;
972
973 if (len != (off_t) size)
974 die("Cannot handle files this big");
975 return size;
976 }
977
978 __attribute__((format (printf, 3, 4)))
979 int xsnprintf(char *dst, size_t max, const char *fmt, ...);
980
981 #ifndef HOST_NAME_MAX
982 #define HOST_NAME_MAX 256
983 #endif
984
985 int xgethostname(char *buf, size_t len);
986
987 /* in ctype.c, for kwset users */
988 extern const unsigned char tolower_trans_tbl[256];
989
990 /* Sane ctype - no locale, and works with signed chars */
991 #undef isascii
992 #undef isspace
993 #undef isdigit
994 #undef isalpha
995 #undef isalnum
996 #undef isprint
997 #undef islower
998 #undef isupper
999 #undef tolower
1000 #undef toupper
1001 #undef iscntrl
1002 #undef ispunct
1003 #undef isxdigit
1004
1005 extern const unsigned char sane_ctype[256];
1006 #define GIT_SPACE 0x01
1007 #define GIT_DIGIT 0x02
1008 #define GIT_ALPHA 0x04
1009 #define GIT_GLOB_SPECIAL 0x08
1010 #define GIT_REGEX_SPECIAL 0x10
1011 #define GIT_PATHSPEC_MAGIC 0x20
1012 #define GIT_CNTRL 0x40
1013 #define GIT_PUNCT 0x80
1014 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
1015 #define isascii(x) (((x) & ~0x7f) == 0)
1016 #define isspace(x) sane_istest(x,GIT_SPACE)
1017 #define isdigit(x) sane_istest(x,GIT_DIGIT)
1018 #define isalpha(x) sane_istest(x,GIT_ALPHA)
1019 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
1020 #define isprint(x) ((x) >= 0x20 && (x) <= 0x7e)
1021 #define islower(x) sane_iscase(x, 1)
1022 #define isupper(x) sane_iscase(x, 0)
1023 #define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL)
1024 #define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL)
1025 #define iscntrl(x) (sane_istest(x,GIT_CNTRL))
1026 #define ispunct(x) sane_istest(x, GIT_PUNCT | GIT_REGEX_SPECIAL | \
1027 GIT_GLOB_SPECIAL | GIT_PATHSPEC_MAGIC)
1028 #define isxdigit(x) (hexval_table[(unsigned char)(x)] != -1)
1029 #define tolower(x) sane_case((unsigned char)(x), 0x20)
1030 #define toupper(x) sane_case((unsigned char)(x), 0)
1031 #define is_pathspec_magic(x) sane_istest(x,GIT_PATHSPEC_MAGIC)
1032
1033 static inline int sane_case(int x, int high)
1034 {
1035 if (sane_istest(x, GIT_ALPHA))
1036 x = (x & ~0x20) | high;
1037 return x;
1038 }
1039
1040 static inline int sane_iscase(int x, int is_lower)
1041 {
1042 if (!sane_istest(x, GIT_ALPHA))
1043 return 0;
1044
1045 if (is_lower)
1046 return (x & 0x20) != 0;
1047 else
1048 return (x & 0x20) == 0;
1049 }
1050
1051 /*
1052 * Like skip_prefix, but compare case-insensitively. Note that the comparison
1053 * is done via tolower(), so it is strictly ASCII (no multi-byte characters or
1054 * locale-specific conversions).
1055 */
1056 static inline int skip_iprefix(const char *str, const char *prefix,
1057 const char **out)
1058 {
1059 do {
1060 if (!*prefix) {
1061 *out = str;
1062 return 1;
1063 }
1064 } while (tolower(*str++) == tolower(*prefix++));
1065 return 0;
1066 }
1067
1068 static inline int strtoul_ui(char const *s, int base, unsigned int *result)
1069 {
1070 unsigned long ul;
1071 char *p;
1072
1073 errno = 0;
1074 /* negative values would be accepted by strtoul */
1075 if (strchr(s, '-'))
1076 return -1;
1077 ul = strtoul(s, &p, base);
1078 if (errno || *p || p == s || (unsigned int) ul != ul)
1079 return -1;
1080 *result = ul;
1081 return 0;
1082 }
1083
1084 static inline int strtol_i(char const *s, int base, int *result)
1085 {
1086 long ul;
1087 char *p;
1088
1089 errno = 0;
1090 ul = strtol(s, &p, base);
1091 if (errno || *p || p == s || (int) ul != ul)
1092 return -1;
1093 *result = ul;
1094 return 0;
1095 }
1096
1097 #ifdef INTERNAL_QSORT
1098 void git_qsort(void *base, size_t nmemb, size_t size,
1099 int(*compar)(const void *, const void *));
1100 #define qsort git_qsort
1101 #endif
1102
1103 #define QSORT(base, n, compar) sane_qsort((base), (n), sizeof(*(base)), compar)
1104 static inline void sane_qsort(void *base, size_t nmemb, size_t size,
1105 int(*compar)(const void *, const void *))
1106 {
1107 if (nmemb > 1)
1108 qsort(base, nmemb, size, compar);
1109 }
1110
1111 #ifndef HAVE_ISO_QSORT_S
1112 int git_qsort_s(void *base, size_t nmemb, size_t size,
1113 int (*compar)(const void *, const void *, void *), void *ctx);
1114 #define qsort_s git_qsort_s
1115 #endif
1116
1117 #define QSORT_S(base, n, compar, ctx) do { \
1118 if (qsort_s((base), (n), sizeof(*(base)), compar, ctx)) \
1119 BUG("qsort_s() failed"); \
1120 } while (0)
1121
1122 #ifndef REG_STARTEND
1123 #error "Git requires REG_STARTEND support. Compile with NO_REGEX=NeedsStartEnd"
1124 #endif
1125
1126 static inline int regexec_buf(const regex_t *preg, const char *buf, size_t size,
1127 size_t nmatch, regmatch_t pmatch[], int eflags)
1128 {
1129 assert(nmatch > 0 && pmatch);
1130 pmatch[0].rm_so = 0;
1131 pmatch[0].rm_eo = size;
1132 return regexec(preg, buf, nmatch, pmatch, eflags | REG_STARTEND);
1133 }
1134
1135 #ifndef DIR_HAS_BSD_GROUP_SEMANTICS
1136 # define FORCE_DIR_SET_GID S_ISGID
1137 #else
1138 # define FORCE_DIR_SET_GID 0
1139 #endif
1140
1141 #ifdef NO_NSEC
1142 #undef USE_NSEC
1143 #define ST_CTIME_NSEC(st) 0
1144 #define ST_MTIME_NSEC(st) 0
1145 #else
1146 #ifdef USE_ST_TIMESPEC
1147 #define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctimespec.tv_nsec))
1148 #define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtimespec.tv_nsec))
1149 #else
1150 #define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctim.tv_nsec))
1151 #define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtim.tv_nsec))
1152 #endif
1153 #endif
1154
1155 #ifdef UNRELIABLE_FSTAT
1156 #define fstat_is_reliable() 0
1157 #else
1158 #define fstat_is_reliable() 1
1159 #endif
1160
1161 #ifndef va_copy
1162 /*
1163 * Since an obvious implementation of va_list would be to make it a
1164 * pointer into the stack frame, a simple assignment will work on
1165 * many systems. But let's try to be more portable.
1166 */
1167 #ifdef __va_copy
1168 #define va_copy(dst, src) __va_copy(dst, src)
1169 #else
1170 #define va_copy(dst, src) ((dst) = (src))
1171 #endif
1172 #endif
1173
1174 #if defined(__GNUC__) || (_MSC_VER >= 1400) || defined(__C99_MACRO_WITH_VA_ARGS)
1175 #define HAVE_VARIADIC_MACROS 1
1176 #endif
1177
1178 /* usage.c: only to be used for testing BUG() implementation (see test-tool) */
1179 extern int BUG_exit_code;
1180
1181 #ifdef HAVE_VARIADIC_MACROS
1182 __attribute__((format (printf, 3, 4))) NORETURN
1183 void BUG_fl(const char *file, int line, const char *fmt, ...);
1184 #define BUG(...) BUG_fl(__FILE__, __LINE__, __VA_ARGS__)
1185 #else
1186 __attribute__((format (printf, 1, 2))) NORETURN
1187 void BUG(const char *fmt, ...);
1188 #endif
1189
1190 /*
1191 * Preserves errno, prints a message, but gives no warning for ENOENT.
1192 * Returns 0 on success, which includes trying to unlink an object that does
1193 * not exist.
1194 */
1195 int unlink_or_warn(const char *path);
1196 /*
1197 * Tries to unlink file. Returns 0 if unlink succeeded
1198 * or the file already didn't exist. Returns -1 and
1199 * appends a message to err suitable for
1200 * 'error("%s", err->buf)' on error.
1201 */
1202 int unlink_or_msg(const char *file, struct strbuf *err);
1203 /*
1204 * Preserves errno, prints a message, but gives no warning for ENOENT.
1205 * Returns 0 on success, which includes trying to remove a directory that does
1206 * not exist.
1207 */
1208 int rmdir_or_warn(const char *path);
1209 /*
1210 * Calls the correct function out of {unlink,rmdir}_or_warn based on
1211 * the supplied file mode.
1212 */
1213 int remove_or_warn(unsigned int mode, const char *path);
1214
1215 /*
1216 * Call access(2), but warn for any error except "missing file"
1217 * (ENOENT or ENOTDIR).
1218 */
1219 #define ACCESS_EACCES_OK (1U << 0)
1220 int access_or_warn(const char *path, int mode, unsigned flag);
1221 int access_or_die(const char *path, int mode, unsigned flag);
1222
1223 /* Warn on an inaccessible file if errno indicates this is an error */
1224 int warn_on_fopen_errors(const char *path);
1225
1226 #ifdef GMTIME_UNRELIABLE_ERRORS
1227 struct tm *git_gmtime(const time_t *);
1228 struct tm *git_gmtime_r(const time_t *, struct tm *);
1229 #define gmtime git_gmtime
1230 #define gmtime_r git_gmtime_r
1231 #endif
1232
1233 #if !defined(USE_PARENS_AROUND_GETTEXT_N) && defined(__GNUC__)
1234 #define USE_PARENS_AROUND_GETTEXT_N 1
1235 #endif
1236
1237 #ifndef SHELL_PATH
1238 # define SHELL_PATH "/bin/sh"
1239 #endif
1240
1241 #ifndef _POSIX_THREAD_SAFE_FUNCTIONS
1242 #define flockfile(fh)
1243 #define funlockfile(fh)
1244 #define getc_unlocked(fh) getc(fh)
1245 #endif
1246
1247 #ifdef FILENO_IS_A_MACRO
1248 int git_fileno(FILE *stream);
1249 # ifndef COMPAT_CODE_FILENO
1250 # undef fileno
1251 # define fileno(p) git_fileno(p)
1252 # endif
1253 #endif
1254
1255 #ifdef NEED_ACCESS_ROOT_HANDLER
1256 int git_access(const char *path, int mode);
1257 # ifndef COMPAT_CODE_ACCESS
1258 # ifdef access
1259 # undef access
1260 # endif
1261 # define access(path, mode) git_access(path, mode)
1262 # endif
1263 #endif
1264
1265 /*
1266 * Our code often opens a path to an optional file, to work on its
1267 * contents when we can successfully open it. We can ignore a failure
1268 * to open if such an optional file does not exist, but we do want to
1269 * report a failure in opening for other reasons (e.g. we got an I/O
1270 * error, or the file is there, but we lack the permission to open).
1271 *
1272 * Call this function after seeing an error from open() or fopen() to
1273 * see if the errno indicates a missing file that we can safely ignore.
1274 */
1275 static inline int is_missing_file_error(int errno_)
1276 {
1277 return (errno_ == ENOENT || errno_ == ENOTDIR);
1278 }
1279
1280 int cmd_main(int, const char **);
1281
1282 /*
1283 * Intercept all calls to exit() and route them to trace2 to
1284 * optionally emit a message before calling the real exit().
1285 */
1286 int trace2_cmd_exit_fl(const char *file, int line, int code);
1287 #define exit(code) exit(trace2_cmd_exit_fl(__FILE__, __LINE__, (code)))
1288
1289 /*
1290 * You can mark a stack variable with UNLEAK(var) to avoid it being
1291 * reported as a leak by tools like LSAN or valgrind. The argument
1292 * should generally be the variable itself (not its address and not what
1293 * it points to). It's safe to use this on pointers which may already
1294 * have been freed, or on pointers which may still be in use.
1295 *
1296 * Use this _only_ for a variable that leaks by going out of scope at
1297 * program exit (so only from cmd_* functions or their direct helpers).
1298 * Normal functions, especially those which may be called multiple
1299 * times, should actually free their memory. This is only meant as
1300 * an annotation, and does nothing in non-leak-checking builds.
1301 */
1302 #ifdef SUPPRESS_ANNOTATED_LEAKS
1303 void unleak_memory(const void *ptr, size_t len);
1304 #define UNLEAK(var) unleak_memory(&(var), sizeof(var))
1305 #else
1306 #define UNLEAK(var) do {} while (0)
1307 #endif
1308
1309 /*
1310 * This include must come after system headers, since it introduces macros that
1311 * replace system names.
1312 */
1313 #include "banned.h"
1314
1315 #endif