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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
c2f1db8f | 2 | #pragma once |
60918275 | 3 | |
a7334b09 LP |
4 | /*** |
5 | This file is part of systemd. | |
6 | ||
7 | Copyright 2010 Lennart Poettering | |
8 | ||
9 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
10 | under the terms of the GNU Lesser General Public License as published by |
11 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
12 | (at your option) any later version. |
13 | ||
14 | systemd is distributed in the hope that it will be useful, but | |
15 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 17 | Lesser General Public License for more details. |
a7334b09 | 18 | |
5430f7f2 | 19 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
20 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
21 | ***/ | |
22 | ||
31885cd5 | 23 | #include <alloca.h> |
11c3a366 | 24 | #include <errno.h> |
370c860f | 25 | #include <fcntl.h> |
60918275 | 26 | #include <inttypes.h> |
f6c2284a LP |
27 | #include <limits.h> |
28 | #include <locale.h> | |
ec2002f8 | 29 | #include <stdarg.h> |
60918275 | 30 | #include <stdbool.h> |
f6c2284a | 31 | #include <stddef.h> |
11c3a366 | 32 | #include <stdint.h> |
80876c20 | 33 | #include <stdio.h> |
f6c2284a | 34 | #include <stdlib.h> |
11c3a366 | 35 | #include <string.h> |
f6c2284a | 36 | #include <sys/inotify.h> |
2c35d880 | 37 | #include <sys/socket.h> |
00dc5d76 | 38 | #include <sys/stat.h> |
c6878637 | 39 | #include <sys/statfs.h> |
27d13af7 | 40 | #include <sys/sysmacros.h> |
f6c2284a LP |
41 | #include <sys/types.h> |
42 | #include <time.h> | |
43 | #include <unistd.h> | |
60918275 | 44 | |
f97b34a6 | 45 | #include "format-util.h" |
a838e6a1 | 46 | #include "macro.h" |
dced1557 | 47 | #include "missing.h" |
9a98c7a1 | 48 | #include "time-util.h" |
871d7de4 | 49 | |
2e857429 | 50 | size_t page_size(void) _pure_; |
37f85e66 | 51 | #define PAGE_ALIGN(l) ALIGN_TO((l), page_size()) |
52 | ||
60918275 LP |
53 | static inline const char* yes_no(bool b) { |
54 | return b ? "yes" : "no"; | |
55 | } | |
56 | ||
5232c42e LS |
57 | static inline const char* true_false(bool b) { |
58 | return b ? "true" : "false"; | |
59 | } | |
60 | ||
769d324c LP |
61 | static inline const char* one_zero(bool b) { |
62 | return b ? "1" : "0"; | |
63 | } | |
64 | ||
2d37cd53 ZJS |
65 | static inline const char* enable_disable(bool b) { |
66 | return b ? "enable" : "disable"; | |
67 | } | |
68 | ||
a88c8750 TG |
69 | bool plymouth_running(void); |
70 | ||
44a6b1b6 | 71 | bool display_is_local(const char *display) _pure_; |
4d6d6518 LP |
72 | int socket_from_display(const char *display, char **path); |
73 | ||
94959f0f LP |
74 | int block_get_whole_disk(dev_t d, dev_t *ret); |
75 | ||
e23a0ce8 | 76 | #define NULSTR_FOREACH(i, l) \ |
c4e2ceae LP |
77 | for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1) |
78 | ||
5c0532d1 LP |
79 | #define NULSTR_FOREACH_PAIR(i, j, l) \ |
80 | for ((i) = (l), (j) = strchr((i), 0)+1; (i) && *(i); (i) = strchr((j), 0)+1, (j) = *(i) ? strchr((i), 0)+1 : (i)) | |
81 | ||
9a0e6896 LP |
82 | extern int saved_argc; |
83 | extern char **saved_argv; | |
84 | ||
65457142 FC |
85 | bool kexec_loaded(void); |
86 | ||
44a6b1b6 | 87 | int prot_from_flags(int flags) _const_; |
87d2c1ff | 88 | |
9bdc770c | 89 | int fork_agent(pid_t *pid, const int except[], unsigned n_except, const char *path, ...); |
6bb92a16 | 90 | |
9be346c9 | 91 | bool in_initrd(void); |
dcd61450 | 92 | void in_initrd_force(bool value); |
069cfc85 | 93 | |
a9e12476 KS |
94 | void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size, |
95 | int (*compar) (const void *, const void *, void *), | |
96 | void *arg); | |
09017585 | 97 | |
b5efdb8a LP |
98 | /** |
99 | * Normal qsort requires base to be nonnull. Here were require | |
100 | * that only if nmemb > 0. | |
101 | */ | |
102 | static inline void qsort_safe(void *base, size_t nmemb, size_t size, comparison_fn_t compar) { | |
103 | if (nmemb <= 1) | |
104 | return; | |
f74e605f | 105 | |
b5efdb8a LP |
106 | assert(base); |
107 | qsort(base, nmemb, size, compar); | |
6282c859 | 108 | } |
66e35261 | 109 | |
75f32f04 ZJS |
110 | /** |
111 | * Normal memcpy requires src to be nonnull. We do nothing if n is 0. | |
112 | */ | |
113 | static inline void memcpy_safe(void *dst, const void *src, size_t n) { | |
114 | if (n == 0) | |
115 | return; | |
116 | assert(src); | |
117 | memcpy(dst, src, n); | |
118 | } | |
119 | ||
b5efdb8a LP |
120 | int on_ac_power(void); |
121 | ||
7d50b32a LP |
122 | #define memzero(x,l) (memset((x), 0, (l))) |
123 | #define zero(x) (memzero(&(x), sizeof(x))) | |
124 | ||
b5efdb8a LP |
125 | static inline void *mempset(void *s, int c, size_t n) { |
126 | memset(s, c, n); | |
127 | return (uint8_t*)s + n; | |
128 | } | |
a1937e67 | 129 | |
5c0d398d | 130 | static inline void _reset_errno_(int *saved_errno) { |
5c0aa72a LP |
131 | errno = *saved_errno; |
132 | } | |
133 | ||
2a371001 | 134 | #define PROTECT_ERRNO _cleanup_(_reset_errno_) __attribute__((unused)) int _saved_errno_ = errno |
5c0d398d | 135 | |
44dd2c6e DH |
136 | static inline int negative_errno(void) { |
137 | /* This helper should be used to shut up gcc if you know 'errno' is | |
138 | * negative. Instead of "return -errno;", use "return negative_errno();" | |
139 | * It will suppress bogus gcc warnings in case it assumes 'errno' might | |
140 | * be 0 and thus the caller's error-handling might not be triggered. */ | |
141 | assert_return(errno > 0, -EINVAL); | |
142 | return -errno; | |
143 | } | |
144 | ||
144e51ec | 145 | static inline unsigned u64log2(uint64_t n) { |
ec417ccc | 146 | #if __SIZEOF_LONG_LONG__ == 8 |
693eb9a2 | 147 | return (n > 1) ? (unsigned) __builtin_clzll(n) ^ 63U : 0; |
ec417ccc LP |
148 | #else |
149 | #error "Wut?" | |
150 | #endif | |
151 | } | |
152 | ||
153 | static inline unsigned u32ctz(uint32_t n) { | |
154 | #if __SIZEOF_INT__ == 4 | |
155 | return __builtin_ctz(n); | |
156 | #else | |
157 | #error "Wut?" | |
158 | #endif | |
144e51ec | 159 | } |
79d860fe | 160 | |
7d328b54 | 161 | static inline unsigned log2i(int x) { |
8fe90522 ZJS |
162 | assert(x > 0); |
163 | ||
164 | return __SIZEOF_INT__ * 8 - __builtin_clz(x) - 1; | |
165 | } | |
166 | ||
b5de6d98 MS |
167 | static inline unsigned log2u(unsigned x) { |
168 | assert(x > 0); | |
169 | ||
170 | return sizeof(unsigned) * 8 - __builtin_clz(x) - 1; | |
171 | } | |
172 | ||
173 | static inline unsigned log2u_round_up(unsigned x) { | |
174 | assert(x > 0); | |
175 | ||
176 | if (x == 1) | |
177 | return 0; | |
178 | ||
179 | return log2u(x - 1) + 1; | |
180 | } | |
181 | ||
bc9fd78c LP |
182 | int container_get_leader(const char *machine, pid_t *pid); |
183 | ||
671c3419 RM |
184 | int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *netns_fd, int *userns_fd, int *root_fd); |
185 | int namespace_enter(int pidns_fd, int mntns_fd, int netns_fd, int userns_fd, int root_fd); | |
bf108e55 | 186 | |
1c231f56 | 187 | uint64_t physical_memory(void); |
d8cf2ac7 | 188 | uint64_t physical_memory_scale(uint64_t v, uint64_t max); |
6db615c1 | 189 | |
83f8e808 LP |
190 | uint64_t system_tasks_max(void); |
191 | uint64_t system_tasks_max_scale(uint64_t v, uint64_t max); | |
192 | ||
27c06cb5 | 193 | int update_reboot_parameter_and_warn(const char *param); |
6d313367 | 194 | |
3f6fd1ba | 195 | int version(void); |
c43b2b9c FB |
196 | |
197 | int get_block_device(const char *path, dev_t *dev); | |
198 | int get_block_device_harder(const char *path, dev_t *dev); |