5430f7f2bc
We finally got the OK from all contributors with non-trivial commits to relicense systemd from GPL2+ to LGPL2.1+. Some udev bits continue to be GPL2+ for now, but we are looking into relicensing them too, to allow free copy/paste of all code within systemd. The bits that used to be MIT continue to be MIT. The big benefit of the relicensing is that closed source code may now link against libsystemd-login.so and friends.
182 lines
6.1 KiB
C
182 lines
6.1 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#ifndef foomacrohfoo
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#define foomacrohfoo
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <assert.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <inttypes.h>
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#define _printf_attr_(a,b) __attribute__ ((format (printf, a, b)))
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#define _sentinel_ __attribute__ ((sentinel))
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#define _noreturn_ __attribute__((noreturn))
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#define _unused_ __attribute__ ((unused))
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#define _destructor_ __attribute__ ((destructor))
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#define _pure_ __attribute__ ((pure))
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#define _const_ __attribute__ ((const))
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#define _deprecated_ __attribute__ ((deprecated))
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#define _packed_ __attribute__ ((packed))
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#define _malloc_ __attribute__ ((malloc))
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#define _weak_ __attribute__ ((weak))
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#define _likely_(x) (__builtin_expect(!!(x),1))
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#define _unlikely_(x) (__builtin_expect(!!(x),0))
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#define _public_ __attribute__ ((visibility("default")))
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#define _hidden_ __attribute__ ((visibility("hidden")))
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#define _weakref_(x) __attribute__((weakref(#x)))
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#define _introspect_(x) __attribute__((section("introspect." x)))
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#define XSTRINGIFY(x) #x
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#define STRINGIFY(x) XSTRINGIFY(x)
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/* Rounds up */
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#define ALIGN(l) ALIGN_TO((l), sizeof(void*))
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static inline size_t ALIGN_TO(size_t l, size_t ali) {
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return ((l + ali - 1) & ~(ali - 1));
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}
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#define ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0]))
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#ifndef MAX
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#define MAX(a,b) \
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__extension__ ({ \
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typeof(a) _a = (a); \
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typeof(b) _b = (b); \
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_a > _b ? _a : _b; \
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})
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#endif
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#define MAX3(a,b,c) \
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MAX(MAX(a,b),c)
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#ifndef MIN
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#define MIN(a,b) \
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__extension__ ({ \
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typeof(a) _a = (a); \
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typeof(b) _b = (b); \
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_a < _b ? _a : _b; \
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})
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#endif
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#define MIN3(a,b,c) \
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MIN(MIN(a,b),c)
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#define CLAMP(x, low, high) \
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__extension__ ({ \
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typeof(x) _x = (x); \
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typeof(low) _low = (low); \
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typeof(high) _high = (high); \
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((_x > _high) ? _high : ((_x < _low) ? _low : _x)); \
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})
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#define assert_se(expr) \
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do { \
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if (_unlikely_(!(expr))) \
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log_assert_failed(#expr, __FILE__, __LINE__, __PRETTY_FUNCTION__); \
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} while (false) \
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/* We override the glibc assert() here. */
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#undef assert
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#ifdef NDEBUG
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#define assert(expr) do {} while(false)
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#else
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#define assert(expr) assert_se(expr)
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#endif
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#define assert_not_reached(t) \
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do { \
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log_assert_failed_unreachable(t, __FILE__, __LINE__, __PRETTY_FUNCTION__); \
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} while (false)
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#define assert_cc(expr) \
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do { \
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switch (0) { \
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case 0: \
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case !!(expr): \
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; \
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} \
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} while (false)
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#define PTR_TO_UINT(p) ((unsigned int) ((uintptr_t) (p)))
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#define UINT_TO_PTR(u) ((void*) ((uintptr_t) (u)))
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#define PTR_TO_UINT32(p) ((uint32_t) ((uintptr_t) (p)))
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#define UINT32_TO_PTR(u) ((void*) ((uintptr_t) (u)))
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#define PTR_TO_ULONG(p) ((unsigned long) ((uintptr_t) (p)))
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#define ULONG_TO_PTR(u) ((void*) ((uintptr_t) (u)))
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#define PTR_TO_INT(p) ((int) ((intptr_t) (p)))
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#define INT_TO_PTR(u) ((void*) ((intptr_t) (u)))
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#define TO_INT32(p) ((int32_t) ((intptr_t) (p)))
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#define INT32_TO_PTR(u) ((void*) ((intptr_t) (u)))
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#define PTR_TO_LONG(p) ((long) ((intptr_t) (p)))
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#define LONG_TO_PTR(u) ((void*) ((intptr_t) (u)))
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#define memzero(x,l) (memset((x), 0, (l)))
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#define zero(x) (memzero(&(x), sizeof(x)))
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#define char_array_0(x) x[sizeof(x)-1] = 0;
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#define IOVEC_SET_STRING(i, s) \
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do { \
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struct iovec *_i = &(i); \
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char *_s = (char *)(s); \
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_i->iov_base = _s; \
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_i->iov_len = strlen(_s); \
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} while(false)
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static inline size_t IOVEC_TOTAL_SIZE(const struct iovec *i, unsigned n) {
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unsigned j;
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size_t r = 0;
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for (j = 0; j < n; j++)
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r += i[j].iov_len;
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return r;
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}
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static inline size_t IOVEC_INCREMENT(struct iovec *i, unsigned n, size_t k) {
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unsigned j;
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for (j = 0; j < n; j++) {
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size_t sub;
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if (_unlikely_(k <= 0))
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break;
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sub = MIN(i[j].iov_len, k);
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i[j].iov_len -= sub;
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i[j].iov_base = (uint8_t*) i[j].iov_base + sub;
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k -= sub;
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}
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return k;
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}
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#include "log.h"
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#endif
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