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03467c88 | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
60918275 | 2 | |
c2f1db8f | 3 | #pragma once |
60918275 | 4 | |
a7334b09 LP |
5 | /*** |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright 2010 Lennart Poettering | |
9 | ||
10 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
11 | under the terms of the GNU Lesser General Public License as published by |
12 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
13 | (at your option) any later version. |
14 | ||
15 | systemd is distributed in the hope that it will be useful, but | |
16 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 18 | Lesser General Public License for more details. |
a7334b09 | 19 | |
5430f7f2 | 20 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
22 | ***/ | |
23 | ||
60918275 | 24 | #include <assert.h> |
6a39419f | 25 | #include <sys/param.h> |
60918275 | 26 | #include <sys/types.h> |
c31e1495 LP |
27 | #include <sys/uio.h> |
28 | #include <inttypes.h> | |
60918275 | 29 | |
44b601bc | 30 | #define _printf_(a,b) __attribute__ ((format (printf, a, b))) |
750ef272 | 31 | #define _alloc_(...) __attribute__ ((alloc_size(__VA_ARGS__))) |
93a46b0b | 32 | #define _sentinel_ __attribute__ ((sentinel)) |
93a46b0b LP |
33 | #define _unused_ __attribute__ ((unused)) |
34 | #define _destructor_ __attribute__ ((destructor)) | |
35 | #define _pure_ __attribute__ ((pure)) | |
36 | #define _const_ __attribute__ ((const)) | |
37 | #define _deprecated_ __attribute__ ((deprecated)) | |
38 | #define _packed_ __attribute__ ((packed)) | |
39 | #define _malloc_ __attribute__ ((malloc)) | |
40 | #define _weak_ __attribute__ ((weak)) | |
41 | #define _likely_(x) (__builtin_expect(!!(x),1)) | |
42 | #define _unlikely_(x) (__builtin_expect(!!(x),0)) | |
40473a70 LP |
43 | #define _public_ __attribute__ ((visibility("default"))) |
44 | #define _hidden_ __attribute__ ((visibility("hidden"))) | |
ad780f19 | 45 | #define _weakref_(x) __attribute__((weakref(#x))) |
19d1e4ee | 46 | #define _alignas_(x) __attribute__((aligned(__alignof(x)))) |
dfb33a97 | 47 | #define _cleanup_(x) __attribute__((cleanup(x))) |
60918275 | 48 | |
7ebe131a LP |
49 | /* Temporarily disable some warnings */ |
50 | #define DISABLE_WARNING_DECLARATION_AFTER_STATEMENT \ | |
51 | _Pragma("GCC diagnostic push"); \ | |
52 | _Pragma("GCC diagnostic ignored \"-Wdeclaration-after-statement\"") | |
53 | ||
bcfce235 LP |
54 | #define DISABLE_WARNING_FORMAT_NONLITERAL \ |
55 | _Pragma("GCC diagnostic push"); \ | |
56 | _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"") | |
57 | ||
f0f2e63b LP |
58 | #define DISABLE_WARNING_MISSING_PROTOTYPES \ |
59 | _Pragma("GCC diagnostic push"); \ | |
60 | _Pragma("GCC diagnostic ignored \"-Wmissing-prototypes\"") | |
61 | ||
8fca4e30 LP |
62 | #define DISABLE_WARNING_NONNULL \ |
63 | _Pragma("GCC diagnostic push"); \ | |
64 | _Pragma("GCC diagnostic ignored \"-Wnonnull\"") | |
65 | ||
d442e2ec DH |
66 | #define DISABLE_WARNING_SHADOW \ |
67 | _Pragma("GCC diagnostic push"); \ | |
68 | _Pragma("GCC diagnostic ignored \"-Wshadow\"") | |
69 | ||
7ebe131a LP |
70 | #define REENABLE_WARNING \ |
71 | _Pragma("GCC diagnostic pop") | |
72 | ||
49e5de64 ZJS |
73 | /* automake test harness */ |
74 | #define EXIT_TEST_SKIP 77 | |
75 | ||
bef2733f LP |
76 | #define XSTRINGIFY(x) #x |
77 | #define STRINGIFY(x) XSTRINGIFY(x) | |
78 | ||
ab9cbe34 LS |
79 | #define XCONCATENATE(x, y) x ## y |
80 | #define CONCATENATE(x, y) XCONCATENATE(x, y) | |
81 | ||
fb835651 DH |
82 | #define UNIQ_T(x, uniq) CONCATENATE(__unique_prefix_, CONCATENATE(x, uniq)) |
83 | #define UNIQ __COUNTER__ | |
84 | ||
60918275 | 85 | /* Rounds up */ |
9be9c7cf LP |
86 | |
87 | #define ALIGN4(l) (((l) + 3) & ~3) | |
88 | #define ALIGN8(l) (((l) + 7) & ~7) | |
89 | ||
90 | #if __SIZEOF_POINTER__ == 8 | |
91 | #define ALIGN(l) ALIGN8(l) | |
92 | #elif __SIZEOF_POINTER__ == 4 | |
93 | #define ALIGN(l) ALIGN4(l) | |
94 | #else | |
95 | #error "Wut? Pointers are neither 4 nor 8 bytes long?" | |
96 | #endif | |
97 | ||
5f86c1f4 LP |
98 | #define ALIGN_PTR(p) ((void*) ALIGN((unsigned long) (p))) |
99 | #define ALIGN4_PTR(p) ((void*) ALIGN4((unsigned long) (p))) | |
100 | #define ALIGN8_PTR(p) ((void*) ALIGN8((unsigned long) (p))) | |
e86b80b8 | 101 | |
37f85e66 | 102 | static inline size_t ALIGN_TO(size_t l, size_t ali) { |
103 | return ((l + ali - 1) & ~(ali - 1)); | |
22be093f LP |
104 | } |
105 | ||
5f86c1f4 | 106 | #define ALIGN_TO_PTR(p, ali) ((void*) ALIGN_TO((unsigned long) (p), (ali))) |
49aa47c7 | 107 | |
625e870b DH |
108 | /* align to next higher power-of-2 (except for: 0 => 0, overflow => 0) */ |
109 | static inline unsigned long ALIGN_POWER2(unsigned long u) { | |
110 | /* clz(0) is undefined */ | |
111 | if (u == 1) | |
112 | return 1; | |
113 | ||
114 | /* left-shift overflow is undefined */ | |
115 | if (__builtin_clzl(u - 1UL) < 1) | |
116 | return 0; | |
117 | ||
118 | return 1UL << (sizeof(u) * 8 - __builtin_clzl(u - 1UL)); | |
119 | } | |
120 | ||
60918275 LP |
121 | #define ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0])) |
122 | ||
bbc98d32 KS |
123 | /* |
124 | * container_of - cast a member of a structure out to the containing structure | |
125 | * @ptr: the pointer to the member. | |
126 | * @type: the type of the container struct this is embedded in. | |
127 | * @member: the name of the member within the struct. | |
bbc98d32 | 128 | */ |
fb835651 DH |
129 | #define container_of(ptr, type, member) __container_of(UNIQ, (ptr), type, member) |
130 | #define __container_of(uniq, ptr, type, member) \ | |
fa70beaa | 131 | __extension__ ({ \ |
fb835651 DH |
132 | const typeof( ((type*)0)->member ) *UNIQ_T(A, uniq) = (ptr); \ |
133 | (type*)( (char *)UNIQ_T(A, uniq) - offsetof(type,member) ); \ | |
134 | }) | |
bbc98d32 | 135 | |
9607d947 | 136 | #undef MAX |
667a0377 DH |
137 | #define MAX(a, b) __MAX(UNIQ, (a), UNIQ, (b)) |
138 | #define __MAX(aq, a, bq, b) \ | |
fdcba430 | 139 | __extension__ ({ \ |
667a0377 DH |
140 | const typeof(a) UNIQ_T(A, aq) = (a); \ |
141 | const typeof(b) UNIQ_T(B, bq) = (b); \ | |
142 | UNIQ_T(A,aq) > UNIQ_T(B,bq) ? UNIQ_T(A,aq) : UNIQ_T(B,bq); \ | |
143 | }) | |
60918275 | 144 | |
7242d742 DH |
145 | /* evaluates to (void) if _A or _B are not constant or of different types */ |
146 | #define CONST_MAX(_A, _B) \ | |
147 | __extension__ (__builtin_choose_expr( \ | |
148 | __builtin_constant_p(_A) && \ | |
149 | __builtin_constant_p(_B) && \ | |
150 | __builtin_types_compatible_p(typeof(_A), typeof(_B)), \ | |
151 | ((_A) > (_B)) ? (_A) : (_B), \ | |
152 | (void)0)) | |
153 | ||
40a1eebd DH |
154 | /* takes two types and returns the size of the larger one */ |
155 | #define MAXSIZE(A, B) (sizeof(union _packed_ { typeof(A) a; typeof(B) b; })) | |
156 | ||
fdcba430 DH |
157 | #define MAX3(x,y,z) \ |
158 | __extension__ ({ \ | |
159 | const typeof(x) _c = MAX(x,y); \ | |
160 | MAX(_c, z); \ | |
9607d947 | 161 | }) |
3b63d2d3 | 162 | |
9607d947 | 163 | #undef MIN |
667a0377 DH |
164 | #define MIN(a, b) __MIN(UNIQ, (a), UNIQ, (b)) |
165 | #define __MIN(aq, a, bq, b) \ | |
fdcba430 | 166 | __extension__ ({ \ |
667a0377 DH |
167 | const typeof(a) UNIQ_T(A, aq) = (a); \ |
168 | const typeof(b) UNIQ_T(B, bq) = (b); \ | |
169 | UNIQ_T(A,aq) < UNIQ_T(B,bq) ? UNIQ_T(A,aq) : UNIQ_T(B,bq); \ | |
170 | }) | |
60918275 | 171 | |
fdcba430 DH |
172 | #define MIN3(x,y,z) \ |
173 | __extension__ ({ \ | |
174 | const typeof(x) _c = MIN(x,y); \ | |
175 | MIN(_c, z); \ | |
7df23077 DH |
176 | }) |
177 | ||
667a0377 DH |
178 | #define LESS_BY(a, b) __LESS_BY(UNIQ, (a), UNIQ, (b)) |
179 | #define __LESS_BY(aq, a, bq, b) \ | |
fdcba430 | 180 | __extension__ ({ \ |
667a0377 DH |
181 | const typeof(a) UNIQ_T(A, aq) = (a); \ |
182 | const typeof(b) UNIQ_T(B, bq) = (b); \ | |
183 | UNIQ_T(A,aq) > UNIQ_T(B,bq) ? UNIQ_T(A,aq) - UNIQ_T(B,bq) : 0; \ | |
184 | }) | |
348ced90 | 185 | |
667a0377 DH |
186 | #undef CLAMP |
187 | #define CLAMP(x, low, high) __CLAMP(UNIQ, (x), UNIQ, (low), UNIQ, (high)) | |
188 | #define __CLAMP(xq, x, lowq, low, highq, high) \ | |
60918275 | 189 | __extension__ ({ \ |
667a0377 DH |
190 | const typeof(x) UNIQ_T(X,xq) = (x); \ |
191 | const typeof(low) UNIQ_T(LOW,lowq) = (low); \ | |
192 | const typeof(high) UNIQ_T(HIGH,highq) = (high); \ | |
193 | UNIQ_T(X,xq) > UNIQ_T(HIGH,highq) ? \ | |
194 | UNIQ_T(HIGH,highq) : \ | |
195 | UNIQ_T(X,xq) < UNIQ_T(LOW,lowq) ? \ | |
196 | UNIQ_T(LOW,lowq) : \ | |
197 | UNIQ_T(X,xq); \ | |
198 | }) | |
60918275 | 199 | |
180a60bc DH |
200 | /* [(x + y - 1) / y] suffers from an integer overflow, even though the |
201 | * computation should be possible in the given type. Therefore, we use | |
202 | * [x / y + !!(x % y)]. Note that on "Real CPUs" a division returns both the | |
203 | * quotient and the remainder, so both should be equally fast. */ | |
204 | #define DIV_ROUND_UP(_x, _y) \ | |
205 | __extension__ ({ \ | |
206 | const typeof(_x) __x = (_x); \ | |
207 | const typeof(_y) __y = (_y); \ | |
208 | (__x / __y + !!(__x % __y)); \ | |
209 | }) | |
210 | ||
dd8f71ee LP |
211 | #define assert_se(expr) \ |
212 | do { \ | |
93a46b0b | 213 | if (_unlikely_(!(expr))) \ |
b7f33638 | 214 | log_assert_failed(#expr, __FILE__, __LINE__, __PRETTY_FUNCTION__); \ |
dd8f71ee LP |
215 | } while (false) \ |
216 | ||
217 | /* We override the glibc assert() here. */ | |
218 | #undef assert | |
219 | #ifdef NDEBUG | |
220 | #define assert(expr) do {} while(false) | |
221 | #else | |
222 | #define assert(expr) assert_se(expr) | |
223 | #endif | |
60918275 | 224 | |
dd8f71ee LP |
225 | #define assert_not_reached(t) \ |
226 | do { \ | |
b7f33638 | 227 | log_assert_failed_unreachable(t, __FILE__, __LINE__, __PRETTY_FUNCTION__); \ |
dd8f71ee | 228 | } while (false) |
60918275 | 229 | |
f791c684 | 230 | #if defined(static_assert) |
7ebe131a LP |
231 | /* static_assert() is sometimes defined in a way that trips up |
232 | * -Wdeclaration-after-statement, hence let's temporarily turn off | |
233 | * this warning around it. */ | |
234 | #define assert_cc(expr) \ | |
235 | DISABLE_WARNING_DECLARATION_AFTER_STATEMENT; \ | |
236 | static_assert(expr, #expr); \ | |
237 | REENABLE_WARNING | |
f791c684 | 238 | #else |
7ebe131a LP |
239 | #define assert_cc(expr) \ |
240 | DISABLE_WARNING_DECLARATION_AFTER_STATEMENT; \ | |
418bcb0c | 241 | struct CONCATENATE(_assert_struct_, __LINE__) { \ |
7ebe131a LP |
242 | char x[(expr) ? 0 : -1]; \ |
243 | }; \ | |
244 | REENABLE_WARNING | |
f791c684 | 245 | #endif |
60918275 | 246 | |
80514f9c LP |
247 | #define assert_return(expr, r) \ |
248 | do { \ | |
249 | if (_unlikely_(!(expr))) { \ | |
250 | log_assert_failed_return(#expr, __FILE__, __LINE__, __PRETTY_FUNCTION__); \ | |
251 | return (r); \ | |
252 | } \ | |
18387b59 LP |
253 | } while (false) |
254 | ||
a3dc3547 KS |
255 | #define PTR_TO_INT(p) ((int) ((intptr_t) (p))) |
256 | #define INT_TO_PTR(u) ((void *) ((intptr_t) (u))) | |
60918275 | 257 | #define PTR_TO_UINT(p) ((unsigned int) ((uintptr_t) (p))) |
a3dc3547 | 258 | #define UINT_TO_PTR(u) ((void *) ((uintptr_t) (u))) |
60918275 | 259 | |
a3dc3547 KS |
260 | #define PTR_TO_LONG(p) ((long) ((intptr_t) (p))) |
261 | #define LONG_TO_PTR(u) ((void *) ((intptr_t) (u))) | |
c6c18be3 | 262 | #define PTR_TO_ULONG(p) ((unsigned long) ((uintptr_t) (p))) |
a3dc3547 | 263 | #define ULONG_TO_PTR(u) ((void *) ((uintptr_t) (u))) |
c6c18be3 | 264 | |
a3dc3547 KS |
265 | #define PTR_TO_INT32(p) ((int32_t) ((intptr_t) (p))) |
266 | #define INT32_TO_PTR(u) ((void *) ((intptr_t) (u))) | |
267 | #define PTR_TO_UINT32(p) ((uint32_t) ((uintptr_t) (p))) | |
268 | #define UINT32_TO_PTR(u) ((void *) ((uintptr_t) (u))) | |
60918275 | 269 | |
a3dc3547 KS |
270 | #define PTR_TO_INT64(p) ((int64_t) ((intptr_t) (p))) |
271 | #define INT64_TO_PTR(u) ((void *) ((intptr_t) (u))) | |
272 | #define PTR_TO_UINT64(p) ((uint64_t) ((uintptr_t) (p))) | |
273 | #define UINT64_TO_PTR(u) ((void *) ((uintptr_t) (u))) | |
c6c18be3 | 274 | |
74b2466e LP |
275 | #define PTR_TO_SIZE(p) ((size_t) ((uintptr_t) (p))) |
276 | #define SIZE_TO_PTR(u) ((void *) ((uintptr_t) (u))) | |
277 | ||
8cb4ab00 LP |
278 | /* The following macros add 1 when converting things, since UID 0 is a |
279 | * valid UID, while the pointer NULL is special */ | |
280 | #define PTR_TO_UID(p) ((uid_t) (((uintptr_t) (p))-1)) | |
281 | #define UID_TO_PTR(u) ((void*) (((uintptr_t) (u))+1)) | |
282 | ||
283 | #define PTR_TO_GID(p) ((gid_t) (((uintptr_t) (p))-1)) | |
284 | #define GID_TO_PTR(u) ((void*) (((uintptr_t) (u))+1)) | |
285 | ||
476fe607 LP |
286 | #define memzero(x,l) (memset((x), 0, (l))) |
287 | #define zero(x) (memzero(&(x), sizeof(x))) | |
288 | ||
a9c55a88 LP |
289 | #define CHAR_TO_STR(x) ((char[2]) { x, 0 }) |
290 | ||
034c6ed7 LP |
291 | #define char_array_0(x) x[sizeof(x)-1] = 0; |
292 | ||
bff7c062 | 293 | #define IOVEC_SET_STRING(i, s) \ |
2fa086a8 | 294 | do { \ |
bff7c062 LP |
295 | struct iovec *_i = &(i); \ |
296 | char *_s = (char *)(s); \ | |
297 | _i->iov_base = _s; \ | |
298 | _i->iov_len = strlen(_s); \ | |
9b3c575e | 299 | } while(false) |
2fa086a8 | 300 | |
c31e1495 LP |
301 | static inline size_t IOVEC_TOTAL_SIZE(const struct iovec *i, unsigned n) { |
302 | unsigned j; | |
303 | size_t r = 0; | |
304 | ||
305 | for (j = 0; j < n; j++) | |
306 | r += i[j].iov_len; | |
307 | ||
308 | return r; | |
309 | } | |
310 | ||
311 | static inline size_t IOVEC_INCREMENT(struct iovec *i, unsigned n, size_t k) { | |
312 | unsigned j; | |
313 | ||
314 | for (j = 0; j < n; j++) { | |
315 | size_t sub; | |
316 | ||
317 | if (_unlikely_(k <= 0)) | |
318 | break; | |
319 | ||
320 | sub = MIN(i[j].iov_len, k); | |
321 | i[j].iov_len -= sub; | |
322 | i[j].iov_base = (uint8_t*) i[j].iov_base + sub; | |
323 | k -= sub; | |
324 | } | |
325 | ||
326 | return k; | |
327 | } | |
328 | ||
cecd32f6 LP |
329 | #define VA_FORMAT_ADVANCE(format, ap) \ |
330 | do { \ | |
331 | int _argtypes[128]; \ | |
963ddb91 LP |
332 | size_t _i, _k; \ |
333 | _k = parse_printf_format((format), ELEMENTSOF(_argtypes), _argtypes); \ | |
cecd32f6 | 334 | assert(_k < ELEMENTSOF(_argtypes)); \ |
963ddb91 LP |
335 | for (_i = 0; _i < _k; _i++) { \ |
336 | if (_argtypes[_i] & PA_FLAG_PTR) { \ | |
337 | (void) va_arg(ap, void*); \ | |
338 | continue; \ | |
339 | } \ | |
340 | \ | |
341 | switch (_argtypes[_i]) { \ | |
342 | case PA_INT: \ | |
343 | case PA_INT|PA_FLAG_SHORT: \ | |
344 | case PA_CHAR: \ | |
345 | (void) va_arg(ap, int); \ | |
346 | break; \ | |
347 | case PA_INT|PA_FLAG_LONG: \ | |
348 | (void) va_arg(ap, long int); \ | |
349 | break; \ | |
350 | case PA_INT|PA_FLAG_LONG_LONG: \ | |
351 | (void) va_arg(ap, long long int); \ | |
352 | break; \ | |
353 | case PA_WCHAR: \ | |
354 | (void) va_arg(ap, wchar_t); \ | |
355 | break; \ | |
356 | case PA_WSTRING: \ | |
357 | case PA_STRING: \ | |
358 | case PA_POINTER: \ | |
359 | (void) va_arg(ap, void*); \ | |
360 | break; \ | |
361 | case PA_FLOAT: \ | |
362 | case PA_DOUBLE: \ | |
363 | (void) va_arg(ap, double); \ | |
364 | break; \ | |
365 | case PA_DOUBLE|PA_FLAG_LONG_DOUBLE: \ | |
366 | (void) va_arg(ap, long double); \ | |
367 | break; \ | |
368 | default: \ | |
369 | assert_not_reached("Unknown format string argument."); \ | |
370 | } \ | |
371 | } \ | |
372 | } while(false) | |
373 | ||
e5f476db | 374 | /* Because statfs.t_type can be int on some architectures, we have to cast |
bdd29249 HH |
375 | * the const magic to the type, otherwise the compiler warns about |
376 | * signed/unsigned comparison, because the magic can be 32 bit unsigned. | |
377 | */ | |
c51cf056 | 378 | #define F_TYPE_EQUAL(a, b) (a == (typeof(a)) b) |
bdd29249 | 379 | |
fa70beaa LP |
380 | /* Returns the number of chars needed to format variables of the |
381 | * specified type as a decimal string. Adds in extra space for a | |
382 | * negative '-' prefix. */ | |
fa70beaa | 383 | #define DECIMAL_STR_MAX(type) \ |
5bcb0f2b | 384 | (2+(sizeof(type) <= 1 ? 3 : \ |
fa70beaa LP |
385 | sizeof(type) <= 2 ? 5 : \ |
386 | sizeof(type) <= 4 ? 10 : \ | |
387 | sizeof(type) <= 8 ? 20 : sizeof(int[-2*(sizeof(type) > 8)]))) | |
388 | ||
264ad849 LP |
389 | #define SET_FLAG(v, flag, b) \ |
390 | (v) = (b) ? ((v) | (flag)) : ((v) & ~(flag)) | |
391 | ||
dc36d78e | 392 | #define IN_SET(x, y, ...) \ |
059d9fbb | 393 | ({ \ |
dc36d78e LP |
394 | const typeof(y) _y = (y); \ |
395 | const typeof(_y) _x = (x); \ | |
059d9fbb LP |
396 | unsigned _i; \ |
397 | bool _found = false; \ | |
dc36d78e LP |
398 | for (_i = 0; _i < 1 + sizeof((const typeof(_x)[]) { __VA_ARGS__ })/sizeof(const typeof(_x)); _i++) \ |
399 | if (((const typeof(_x)[]) { _y, __VA_ARGS__ })[_i] == _x) { \ | |
059d9fbb LP |
400 | _found = true; \ |
401 | break; \ | |
402 | } \ | |
403 | _found; \ | |
cabb7806 LP |
404 | }) |
405 | ||
7f0a55d4 JT |
406 | /* Return a nulstr for a standard cascade of configuration directories, |
407 | * suitable to pass to conf_files_list_nulstr or config_parse_many. */ | |
408 | #define CONF_DIRS_NULSTR(n) \ | |
409 | "/etc/" n ".d\0" \ | |
410 | "/run/" n ".d\0" \ | |
411 | "/usr/local/lib/" n ".d\0" \ | |
412 | "/usr/lib/" n ".d\0" \ | |
413 | CONF_DIR_SPLIT_USR(n) | |
414 | ||
415 | #ifdef HAVE_SPLIT_USR | |
416 | #define CONF_DIR_SPLIT_USR(n) "/lib/" n ".d\0" | |
417 | #else | |
418 | #define CONF_DIR_SPLIT_USR(n) | |
419 | #endif | |
420 | ||
919ce0b7 SL |
421 | /* Define C11 thread_local attribute even on older gcc compiler |
422 | * version */ | |
ec202eae SL |
423 | #ifndef thread_local |
424 | /* | |
425 | * Don't break on glibc < 2.16 that doesn't define __STDC_NO_THREADS__ | |
426 | * see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53769 | |
427 | */ | |
428 | #if __STDC_VERSION__ >= 201112L && !(defined(__STDC_NO_THREADS__) || (defined(__GNU_LIBRARY__) && __GLIBC__ == 2 && __GLIBC_MINOR__ < 16)) | |
429 | #define thread_local _Thread_local | |
430 | #else | |
431 | #define thread_local __thread | |
432 | #endif | |
433 | #endif | |
cabb7806 | 434 | |
919ce0b7 SL |
435 | /* Define C11 noreturn without <stdnoreturn.h> and even on older gcc |
436 | * compiler versions */ | |
437 | #ifndef noreturn | |
438 | #if __STDC_VERSION__ >= 201112L | |
439 | #define noreturn _Noreturn | |
440 | #else | |
441 | #define noreturn __attribute__((noreturn)) | |
442 | #endif | |
443 | #endif | |
444 | ||
fed1e721 LP |
445 | #define UID_INVALID ((uid_t) -1) |
446 | #define GID_INVALID ((gid_t) -1) | |
447 | #define MODE_INVALID ((mode_t) -1) | |
448 | ||
dd8f71ee | 449 | #include "log.h" |