/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ #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/types.h> #include <time.h> #include <unistd.h> #include "formats-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"; } void execute_directories(const char* const* directories, usec_t timeout, char *argv[]); 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 *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); } 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; } bool id128_is_valid(const char *s) _pure_; 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); int update_reboot_param_file(const char *param); int version(void);