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/* SPDX-License-Identifier: LGPL-2.1+ */
#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 <alloca.h>
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <limits.h>
#include <locale.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/inotify.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/statfs.h>
#include <sys/sysmacros.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include "format-util.h"
#include "macro.h"
#include "missing.h"
#include "time-util.h"
size_t page_size(void) _pure_;
#define PAGE_ALIGN(l) ALIGN_TO((l), page_size())
static inline const char* yes_no(bool b) {
return b ? "yes" : "no";
}
static inline const char* true_false(bool b) {
return b ? "true" : "false";
}
static inline const char* one_zero(bool b) {
return b ? "1" : "0";
}
static inline const char* enable_disable(bool b) {
return b ? "enable" : "disable";
}
bool plymouth_running(void);
bool display_is_local(const char *display) _pure_;
int socket_from_display(const char *display, char **path);
int block_get_whole_disk(dev_t d, dev_t *ret);
#define NULSTR_FOREACH(i, l) \
for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1)
#define NULSTR_FOREACH_PAIR(i, j, l) \
for ((i) = (l), (j) = strchr((i), 0)+1; (i) && *(i); (i) = strchr((j), 0)+1, (j) = *(i) ? strchr((i), 0)+1 : (i))
extern int saved_argc;
extern char **saved_argv;
bool kexec_loaded(void);
int prot_from_flags(int flags) _const_;
int fork_agent(pid_t *pid, const int except[], unsigned n_except, const char *path, ...);
bool in_initrd(void);
void in_initrd_force(bool value);
void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size,
int (*compar) (const void *, const void *, void *),
void *arg);
/**
* Normal qsort requires base to be nonnull. Here were require
* that only if nmemb > 0.
*/
static inline void qsort_safe(void *base, size_t nmemb, size_t size, comparison_fn_t compar) {
if (nmemb <= 1)
return;
assert(base);
qsort(base, nmemb, size, compar);
}
/**
* Normal memcpy requires src to be nonnull. We do nothing if n is 0.
*/
static inline void memcpy_safe(void *dst, const void *src, size_t n) {
if (n == 0)
return;
assert(src);
memcpy(dst, src, n);
}
int on_ac_power(void);
#define memzero(x,l) (memset((x), 0, (l)))
#define zero(x) (memzero(&(x), sizeof(x)))
static inline void *mempset(void *s, int c, size_t n) {
memset(s, c, n);
return (uint8_t*)s + n;
}
static inline void _reset_errno_(int *saved_errno) {
errno = *saved_errno;
}
#define PROTECT_ERRNO _cleanup_(_reset_errno_) __attribute__((unused)) int _saved_errno_ = errno
static inline int negative_errno(void) {
/* This helper should be used to shut up gcc if you know 'errno' is
* negative. Instead of "return -errno;", use "return negative_errno();"
* It will suppress bogus gcc warnings in case it assumes 'errno' might
* be 0 and thus the caller's error-handling might not be triggered. */
assert_return(errno > 0, -EINVAL);
return -errno;
}
static inline unsigned u64log2(uint64_t n) {
#if __SIZEOF_LONG_LONG__ == 8
return (n > 1) ? (unsigned) __builtin_clzll(n) ^ 63U : 0;
#else
#error "Wut?"
#endif
}
static inline unsigned u32ctz(uint32_t n) {
#if __SIZEOF_INT__ == 4
return __builtin_ctz(n);
#else
#error "Wut?"
#endif
}
static inline unsigned log2i(int x) {
assert(x > 0);
return __SIZEOF_INT__ * 8 - __builtin_clz(x) - 1;
}
static inline unsigned log2u(unsigned x) {
assert(x > 0);
return sizeof(unsigned) * 8 - __builtin_clz(x) - 1;
}
static inline unsigned log2u_round_up(unsigned x) {
assert(x > 0);
if (x == 1)
return 0;
return log2u(x - 1) + 1;
}
int container_get_leader(const char *machine, pid_t *pid);
int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *netns_fd, int *userns_fd, int *root_fd);
int namespace_enter(int pidns_fd, int mntns_fd, int netns_fd, int userns_fd, int root_fd);
uint64_t physical_memory(void);
uint64_t physical_memory_scale(uint64_t v, uint64_t max);
uint64_t system_tasks_max(void);
uint64_t system_tasks_max_scale(uint64_t v, uint64_t max);
int update_reboot_parameter_and_warn(const char *param);
int version(void);
int get_block_device(const char *path, dev_t *dev);
int get_block_device_harder(const char *path, dev_t *dev);
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