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-rw-r--r--src/libbasic/include/basic/macro.h406
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diff --git a/src/libbasic/include/basic/macro.h b/src/libbasic/include/basic/macro.h
new file mode 100644
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+++ b/src/libbasic/include/basic/macro.h
@@ -0,0 +1,406 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <assert.h>
+#include <inttypes.h>
+#include <stdbool.h>
+#include <sys/param.h>
+#include <sys/sysmacros.h>
+#include <sys/types.h>
+
+#define _printf_(a,b) __attribute__ ((format (printf, a, b)))
+#ifdef __clang__
+# define _alloc_(...)
+#else
+# define _alloc_(...) __attribute__ ((alloc_size(__VA_ARGS__)))
+#endif
+#define _sentinel_ __attribute__ ((sentinel))
+#define _unused_ __attribute__ ((unused))
+#define _destructor_ __attribute__ ((destructor))
+#define _pure_ __attribute__ ((pure))
+#define _const_ __attribute__ ((const))
+#define _deprecated_ __attribute__ ((deprecated))
+#define _packed_ __attribute__ ((packed))
+#define _malloc_ __attribute__ ((malloc))
+#define _weak_ __attribute__ ((weak))
+#define _likely_(x) (__builtin_expect(!!(x),1))
+#define _unlikely_(x) (__builtin_expect(!!(x),0))
+#define _public_ __attribute__ ((visibility("default")))
+#define _hidden_ __attribute__ ((visibility("hidden")))
+#define _weakref_(x) __attribute__((weakref(#x)))
+#define _alignas_(x) __attribute__((aligned(__alignof(x))))
+#define _cleanup_(x) __attribute__((cleanup(x)))
+
+/* Temporarily disable some warnings */
+#define DISABLE_WARNING_DECLARATION_AFTER_STATEMENT \
+ _Pragma("GCC diagnostic push"); \
+ _Pragma("GCC diagnostic ignored \"-Wdeclaration-after-statement\"")
+
+#define DISABLE_WARNING_FORMAT_NONLITERAL \
+ _Pragma("GCC diagnostic push"); \
+ _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"")
+
+#define DISABLE_WARNING_MISSING_PROTOTYPES \
+ _Pragma("GCC diagnostic push"); \
+ _Pragma("GCC diagnostic ignored \"-Wmissing-prototypes\"")
+
+#define DISABLE_WARNING_NONNULL \
+ _Pragma("GCC diagnostic push"); \
+ _Pragma("GCC diagnostic ignored \"-Wnonnull\"")
+
+#define DISABLE_WARNING_SHADOW \
+ _Pragma("GCC diagnostic push"); \
+ _Pragma("GCC diagnostic ignored \"-Wshadow\"")
+
+#define DISABLE_WARNING_INCOMPATIBLE_POINTER_TYPES \
+ _Pragma("GCC diagnostic push"); \
+ _Pragma("GCC diagnostic ignored \"-Wincompatible-pointer-types\"")
+
+#define REENABLE_WARNING \
+ _Pragma("GCC diagnostic pop")
+
+/* automake test harness */
+#define EXIT_TEST_SKIP 77
+
+#define XSTRINGIFY(x) #x
+#define STRINGIFY(x) XSTRINGIFY(x)
+
+#define XCONCATENATE(x, y) x ## y
+#define CONCATENATE(x, y) XCONCATENATE(x, y)
+
+#define UNIQ_T(x, uniq) CONCATENATE(__unique_prefix_, CONCATENATE(x, uniq))
+#define UNIQ __COUNTER__
+
+/* Rounds up */
+
+#define ALIGN4(l) (((l) + 3) & ~3)
+#define ALIGN8(l) (((l) + 7) & ~7)
+
+#if __SIZEOF_POINTER__ == 8
+#define ALIGN(l) ALIGN8(l)
+#elif __SIZEOF_POINTER__ == 4
+#define ALIGN(l) ALIGN4(l)
+#else
+#error "Wut? Pointers are neither 4 nor 8 bytes long?"
+#endif
+
+#define ALIGN_PTR(p) ((void*) ALIGN((unsigned long) (p)))
+#define ALIGN4_PTR(p) ((void*) ALIGN4((unsigned long) (p)))
+#define ALIGN8_PTR(p) ((void*) ALIGN8((unsigned long) (p)))
+
+static inline size_t ALIGN_TO(size_t l, size_t ali) {
+ return ((l + ali - 1) & ~(ali - 1));
+}
+
+#define ALIGN_TO_PTR(p, ali) ((void*) ALIGN_TO((unsigned long) (p), (ali)))
+
+/* align to next higher power-of-2 (except for: 0 => 0, overflow => 0) */
+static inline unsigned long ALIGN_POWER2(unsigned long u) {
+ /* clz(0) is undefined */
+ if (u == 1)
+ return 1;
+
+ /* left-shift overflow is undefined */
+ if (__builtin_clzl(u - 1UL) < 1)
+ return 0;
+
+ return 1UL << (sizeof(u) * 8 - __builtin_clzl(u - 1UL));
+}
+
+#define ELEMENTSOF(x) \
+ __extension__ (__builtin_choose_expr( \
+ !__builtin_types_compatible_p(typeof(x), typeof(&*(x))), \
+ sizeof(x)/sizeof((x)[0]), \
+ (void)0))
+/*
+ * container_of - cast a member of a structure out to the containing structure
+ * @ptr: the pointer to the member.
+ * @type: the type of the container struct this is embedded in.
+ * @member: the name of the member within the struct.
+ */
+#define container_of(ptr, type, member) __container_of(UNIQ, (ptr), type, member)
+#define __container_of(uniq, ptr, type, member) \
+ __extension__ ({ \
+ const typeof( ((type*)0)->member ) *UNIQ_T(A, uniq) = (ptr); \
+ (type*)( (char *)UNIQ_T(A, uniq) - offsetof(type,member) ); \
+ })
+
+#undef MAX
+#define MAX(a, b) __MAX(UNIQ, (a), UNIQ, (b))
+#define __MAX(aq, a, bq, b) \
+ __extension__ ({ \
+ const typeof(a) UNIQ_T(A, aq) = (a); \
+ const typeof(b) UNIQ_T(B, bq) = (b); \
+ UNIQ_T(A,aq) > UNIQ_T(B,bq) ? UNIQ_T(A,aq) : UNIQ_T(B,bq); \
+ })
+
+/* evaluates to (void) if _A or _B are not constant or of different types */
+#define CONST_MAX(_A, _B) \
+ __extension__ (__builtin_choose_expr( \
+ __builtin_constant_p(_A) && \
+ __builtin_constant_p(_B) && \
+ __builtin_types_compatible_p(typeof(_A), typeof(_B)), \
+ ((_A) > (_B)) ? (_A) : (_B), \
+ (void)0))
+
+/* takes two types and returns the size of the larger one */
+#define MAXSIZE(A, B) (sizeof(union _packed_ { typeof(A) a; typeof(B) b; }))
+
+#define MAX3(x,y,z) \
+ __extension__ ({ \
+ const typeof(x) _c = MAX(x,y); \
+ MAX(_c, z); \
+ })
+
+#undef MIN
+#define MIN(a, b) __MIN(UNIQ, (a), UNIQ, (b))
+#define __MIN(aq, a, bq, b) \
+ __extension__ ({ \
+ const typeof(a) UNIQ_T(A, aq) = (a); \
+ const typeof(b) UNIQ_T(B, bq) = (b); \
+ UNIQ_T(A,aq) < UNIQ_T(B,bq) ? UNIQ_T(A,aq) : UNIQ_T(B,bq); \
+ })
+
+#define MIN3(x,y,z) \
+ __extension__ ({ \
+ const typeof(x) _c = MIN(x,y); \
+ MIN(_c, z); \
+ })
+
+#define LESS_BY(a, b) __LESS_BY(UNIQ, (a), UNIQ, (b))
+#define __LESS_BY(aq, a, bq, b) \
+ __extension__ ({ \
+ const typeof(a) UNIQ_T(A, aq) = (a); \
+ const typeof(b) UNIQ_T(B, bq) = (b); \
+ UNIQ_T(A,aq) > UNIQ_T(B,bq) ? UNIQ_T(A,aq) - UNIQ_T(B,bq) : 0; \
+ })
+
+#undef CLAMP
+#define CLAMP(x, low, high) __CLAMP(UNIQ, (x), UNIQ, (low), UNIQ, (high))
+#define __CLAMP(xq, x, lowq, low, highq, high) \
+ __extension__ ({ \
+ const typeof(x) UNIQ_T(X,xq) = (x); \
+ const typeof(low) UNIQ_T(LOW,lowq) = (low); \
+ const typeof(high) UNIQ_T(HIGH,highq) = (high); \
+ UNIQ_T(X,xq) > UNIQ_T(HIGH,highq) ? \
+ UNIQ_T(HIGH,highq) : \
+ UNIQ_T(X,xq) < UNIQ_T(LOW,lowq) ? \
+ UNIQ_T(LOW,lowq) : \
+ UNIQ_T(X,xq); \
+ })
+
+/* [(x + y - 1) / y] suffers from an integer overflow, even though the
+ * computation should be possible in the given type. Therefore, we use
+ * [x / y + !!(x % y)]. Note that on "Real CPUs" a division returns both the
+ * quotient and the remainder, so both should be equally fast. */
+#define DIV_ROUND_UP(_x, _y) \
+ __extension__ ({ \
+ const typeof(_x) __x = (_x); \
+ const typeof(_y) __y = (_y); \
+ (__x / __y + !!(__x % __y)); \
+ })
+
+#define assert_message_se(expr, message) \
+ do { \
+ if (_unlikely_(!(expr))) \
+ log_assert_failed(message, __FILE__, __LINE__, __PRETTY_FUNCTION__); \
+ } while (false)
+
+#define assert_se(expr) assert_message_se(expr, #expr)
+
+/* We override the glibc assert() here. */
+#undef assert
+#ifdef NDEBUG
+#define assert(expr) do {} while (false)
+#else
+#define assert(expr) assert_message_se(expr, #expr)
+#endif
+
+#define assert_not_reached(t) \
+ do { \
+ log_assert_failed_unreachable(t, __FILE__, __LINE__, __PRETTY_FUNCTION__); \
+ } while (false)
+
+#if defined(static_assert)
+/* static_assert() is sometimes defined in a way that trips up
+ * -Wdeclaration-after-statement, hence let's temporarily turn off
+ * this warning around it. */
+#define assert_cc(expr) \
+ DISABLE_WARNING_DECLARATION_AFTER_STATEMENT; \
+ static_assert(expr, #expr); \
+ REENABLE_WARNING
+#else
+#define assert_cc(expr) \
+ DISABLE_WARNING_DECLARATION_AFTER_STATEMENT; \
+ struct CONCATENATE(_assert_struct_, __COUNTER__) { \
+ char x[(expr) ? 0 : -1]; \
+ }; \
+ REENABLE_WARNING
+#endif
+
+#define assert_log(expr, message) ((_likely_(expr)) \
+ ? (true) \
+ : (log_assert_failed_return(message, __FILE__, __LINE__, __PRETTY_FUNCTION__), false))
+
+#define assert_return(expr, r) \
+ do { \
+ if (!assert_log(expr, #expr)) \
+ return (r); \
+ } while (false)
+
+#define assert_return_errno(expr, r, err) \
+ do { \
+ if (!assert_log(expr, #expr)) { \
+ errno = err; \
+ return (r); \
+ } \
+ } while (false)
+
+#define PTR_TO_INT(p) ((int) ((intptr_t) (p)))
+#define INT_TO_PTR(u) ((void *) ((intptr_t) (u)))
+#define PTR_TO_UINT(p) ((unsigned int) ((uintptr_t) (p)))
+#define UINT_TO_PTR(u) ((void *) ((uintptr_t) (u)))
+
+#define PTR_TO_LONG(p) ((long) ((intptr_t) (p)))
+#define LONG_TO_PTR(u) ((void *) ((intptr_t) (u)))
+#define PTR_TO_ULONG(p) ((unsigned long) ((uintptr_t) (p)))
+#define ULONG_TO_PTR(u) ((void *) ((uintptr_t) (u)))
+
+#define PTR_TO_INT32(p) ((int32_t) ((intptr_t) (p)))
+#define INT32_TO_PTR(u) ((void *) ((intptr_t) (u)))
+#define PTR_TO_UINT32(p) ((uint32_t) ((uintptr_t) (p)))
+#define UINT32_TO_PTR(u) ((void *) ((uintptr_t) (u)))
+
+#define PTR_TO_INT64(p) ((int64_t) ((intptr_t) (p)))
+#define INT64_TO_PTR(u) ((void *) ((intptr_t) (u)))
+#define PTR_TO_UINT64(p) ((uint64_t) ((uintptr_t) (p)))
+#define UINT64_TO_PTR(u) ((void *) ((uintptr_t) (u)))
+
+#define PTR_TO_SIZE(p) ((size_t) ((uintptr_t) (p)))
+#define SIZE_TO_PTR(u) ((void *) ((uintptr_t) (u)))
+
+#define CHAR_TO_STR(x) ((char[2]) { x, 0 })
+
+#define char_array_0(x) x[sizeof(x)-1] = 0;
+
+/* Returns the number of chars needed to format variables of the
+ * specified type as a decimal string. Adds in extra space for a
+ * negative '-' prefix (hence works correctly on signed
+ * types). Includes space for the trailing NUL. */
+#define DECIMAL_STR_MAX(type) \
+ (2+(sizeof(type) <= 1 ? 3 : \
+ sizeof(type) <= 2 ? 5 : \
+ sizeof(type) <= 4 ? 10 : \
+ sizeof(type) <= 8 ? 20 : sizeof(int[-2*(sizeof(type) > 8)])))
+
+#define DECIMAL_STR_WIDTH(x) \
+ ({ \
+ typeof(x) _x_ = (x); \
+ unsigned ans = 1; \
+ while (_x_ /= 10) \
+ ans++; \
+ ans; \
+ })
+
+#define SET_FLAG(v, flag, b) \
+ (v) = (b) ? ((v) | (flag)) : ((v) & ~(flag))
+
+#define CASE_F(X) case X:
+#define CASE_F_1(CASE, X) CASE_F(X)
+#define CASE_F_2(CASE, X, ...) CASE(X) CASE_F_1(CASE, __VA_ARGS__)
+#define CASE_F_3(CASE, X, ...) CASE(X) CASE_F_2(CASE, __VA_ARGS__)
+#define CASE_F_4(CASE, X, ...) CASE(X) CASE_F_3(CASE, __VA_ARGS__)
+#define CASE_F_5(CASE, X, ...) CASE(X) CASE_F_4(CASE, __VA_ARGS__)
+#define CASE_F_6(CASE, X, ...) CASE(X) CASE_F_5(CASE, __VA_ARGS__)
+#define CASE_F_7(CASE, X, ...) CASE(X) CASE_F_6(CASE, __VA_ARGS__)
+#define CASE_F_8(CASE, X, ...) CASE(X) CASE_F_7(CASE, __VA_ARGS__)
+#define CASE_F_9(CASE, X, ...) CASE(X) CASE_F_8(CASE, __VA_ARGS__)
+#define CASE_F_10(CASE, X, ...) CASE(X) CASE_F_9(CASE, __VA_ARGS__)
+#define CASE_F_11(CASE, X, ...) CASE(X) CASE_F_10(CASE, __VA_ARGS__)
+#define CASE_F_12(CASE, X, ...) CASE(X) CASE_F_11(CASE, __VA_ARGS__)
+#define CASE_F_13(CASE, X, ...) CASE(X) CASE_F_12(CASE, __VA_ARGS__)
+#define CASE_F_14(CASE, X, ...) CASE(X) CASE_F_13(CASE, __VA_ARGS__)
+#define CASE_F_15(CASE, X, ...) CASE(X) CASE_F_14(CASE, __VA_ARGS__)
+#define CASE_F_16(CASE, X, ...) CASE(X) CASE_F_15(CASE, __VA_ARGS__)
+#define CASE_F_17(CASE, X, ...) CASE(X) CASE_F_16(CASE, __VA_ARGS__)
+#define CASE_F_18(CASE, X, ...) CASE(X) CASE_F_17(CASE, __VA_ARGS__)
+#define CASE_F_19(CASE, X, ...) CASE(X) CASE_F_18(CASE, __VA_ARGS__)
+#define CASE_F_20(CASE, X, ...) CASE(X) CASE_F_19(CASE, __VA_ARGS__)
+
+#define GET_CASE_F(_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12,_13,_14,_15,_16,_17,_18,_19,_20,NAME,...) NAME
+#define FOR_EACH_MAKE_CASE(...) \
+ GET_CASE_F(__VA_ARGS__,CASE_F_20,CASE_F_19,CASE_F_18,CASE_F_17,CASE_F_16,CASE_F_15,CASE_F_14,CASE_F_13,CASE_F_12,CASE_F_11, \
+ CASE_F_10,CASE_F_9,CASE_F_8,CASE_F_7,CASE_F_6,CASE_F_5,CASE_F_4,CASE_F_3,CASE_F_2,CASE_F_1) \
+ (CASE_F,__VA_ARGS__)
+
+#define IN_SET(x, ...) \
+ ({ \
+ bool _found = false; \
+ /* If the build breaks in the line below, you need to extend the case macros */ \
+ static _unused_ char _static_assert__macros_need_to_be_extended[20 - sizeof((int[]){__VA_ARGS__})/sizeof(int)]; \
+ switch(x) { \
+ FOR_EACH_MAKE_CASE(__VA_ARGS__) \
+ _found = true; \
+ break; \
+ default: \
+ break; \
+ } \
+ _found; \
+ })
+
+#define SWAP_TWO(x, y) do { \
+ typeof(x) _t = (x); \
+ (x) = (y); \
+ (y) = (_t); \
+ } while (false)
+
+/* Define C11 thread_local attribute even on older gcc compiler
+ * version */
+#ifndef thread_local
+/*
+ * Don't break on glibc < 2.16 that doesn't define __STDC_NO_THREADS__
+ * see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53769
+ */
+#if __STDC_VERSION__ >= 201112L && !(defined(__STDC_NO_THREADS__) || (defined(__GNU_LIBRARY__) && __GLIBC__ == 2 && __GLIBC_MINOR__ < 16))
+#define thread_local _Thread_local
+#else
+#define thread_local __thread
+#endif
+#endif
+
+/* Define C11 noreturn without <stdnoreturn.h> and even on older gcc
+ * compiler versions */
+#ifndef noreturn
+#if __STDC_VERSION__ >= 201112L
+#define noreturn _Noreturn
+#else
+#define noreturn __attribute__((noreturn))
+#endif
+#endif
+
+#define DEFINE_TRIVIAL_CLEANUP_FUNC(type, func) \
+ static inline void func##p(type *p) { \
+ if (*p) \
+ func(*p); \
+ } \
+ struct __useless_struct_to_allow_trailing_semicolon__
+
+#include "log.h"
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