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Commit | Line | Data |
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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 | |
a7334b09 LP |
8 | ***/ |
9 | ||
31885cd5 | 10 | #include <alloca.h> |
11c3a366 | 11 | #include <errno.h> |
370c860f | 12 | #include <fcntl.h> |
60918275 | 13 | #include <inttypes.h> |
f6c2284a LP |
14 | #include <limits.h> |
15 | #include <locale.h> | |
ec2002f8 | 16 | #include <stdarg.h> |
60918275 | 17 | #include <stdbool.h> |
f6c2284a | 18 | #include <stddef.h> |
11c3a366 | 19 | #include <stdint.h> |
80876c20 | 20 | #include <stdio.h> |
f6c2284a | 21 | #include <stdlib.h> |
11c3a366 | 22 | #include <string.h> |
f6c2284a | 23 | #include <sys/inotify.h> |
2c35d880 | 24 | #include <sys/socket.h> |
00dc5d76 | 25 | #include <sys/stat.h> |
c6878637 | 26 | #include <sys/statfs.h> |
27d13af7 | 27 | #include <sys/sysmacros.h> |
f6c2284a LP |
28 | #include <sys/types.h> |
29 | #include <time.h> | |
30 | #include <unistd.h> | |
60918275 | 31 | |
f97b34a6 | 32 | #include "format-util.h" |
a838e6a1 | 33 | #include "macro.h" |
dced1557 | 34 | #include "missing.h" |
9a98c7a1 | 35 | #include "time-util.h" |
871d7de4 | 36 | |
2e857429 | 37 | size_t page_size(void) _pure_; |
37f85e66 | 38 | #define PAGE_ALIGN(l) ALIGN_TO((l), page_size()) |
39 | ||
60918275 LP |
40 | static inline const char* yes_no(bool b) { |
41 | return b ? "yes" : "no"; | |
42 | } | |
43 | ||
5232c42e LS |
44 | static inline const char* true_false(bool b) { |
45 | return b ? "true" : "false"; | |
46 | } | |
47 | ||
769d324c LP |
48 | static inline const char* one_zero(bool b) { |
49 | return b ? "1" : "0"; | |
50 | } | |
51 | ||
2d37cd53 ZJS |
52 | static inline const char* enable_disable(bool b) { |
53 | return b ? "enable" : "disable"; | |
54 | } | |
55 | ||
a88c8750 TG |
56 | bool plymouth_running(void); |
57 | ||
44a6b1b6 | 58 | bool display_is_local(const char *display) _pure_; |
4d6d6518 LP |
59 | int socket_from_display(const char *display, char **path); |
60 | ||
e23a0ce8 | 61 | #define NULSTR_FOREACH(i, l) \ |
c4e2ceae LP |
62 | for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1) |
63 | ||
5c0532d1 LP |
64 | #define NULSTR_FOREACH_PAIR(i, j, l) \ |
65 | for ((i) = (l), (j) = strchr((i), 0)+1; (i) && *(i); (i) = strchr((j), 0)+1, (j) = *(i) ? strchr((i), 0)+1 : (i)) | |
66 | ||
9a0e6896 LP |
67 | extern int saved_argc; |
68 | extern char **saved_argv; | |
69 | ||
65457142 FC |
70 | bool kexec_loaded(void); |
71 | ||
44a6b1b6 | 72 | int prot_from_flags(int flags) _const_; |
87d2c1ff | 73 | |
9be346c9 | 74 | bool in_initrd(void); |
dcd61450 | 75 | void in_initrd_force(bool value); |
069cfc85 | 76 | |
a9e12476 KS |
77 | void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size, |
78 | int (*compar) (const void *, const void *, void *), | |
79 | void *arg); | |
09017585 | 80 | |
d6c5d19b ZJS |
81 | /** |
82 | * Normal bsearch requires base to be nonnull. Here were require | |
83 | * that only if nmemb > 0. | |
84 | */ | |
85 | static inline void* bsearch_safe(const void *key, const void *base, | |
86 | size_t nmemb, size_t size, comparison_fn_t compar) { | |
87 | if (nmemb <= 0) | |
88 | return NULL; | |
89 | ||
90 | assert(base); | |
91 | return bsearch(key, base, nmemb, size, compar); | |
92 | } | |
93 | ||
b5efdb8a LP |
94 | /** |
95 | * Normal qsort requires base to be nonnull. Here were require | |
96 | * that only if nmemb > 0. | |
97 | */ | |
98 | static inline void qsort_safe(void *base, size_t nmemb, size_t size, comparison_fn_t compar) { | |
99 | if (nmemb <= 1) | |
100 | return; | |
f74e605f | 101 | |
b5efdb8a LP |
102 | assert(base); |
103 | qsort(base, nmemb, size, compar); | |
6282c859 | 104 | } |
66e35261 | 105 | |
1ce36081 LP |
106 | /* A wrapper around the above, but that adds typesafety: the element size is automatically derived from the type and so |
107 | * is the prototype for the comparison function */ | |
108 | #define typesafe_qsort(p, n, func) \ | |
109 | ({ \ | |
110 | int (*_func_)(const typeof(p[0])*, const typeof(p[0])*) = func; \ | |
111 | qsort_safe((p), (n), sizeof((p)[0]), (__compar_fn_t) _func_); \ | |
112 | }) | |
113 | ||
adea407d LP |
114 | static inline void qsort_r_safe(void *base, size_t nmemb, size_t size, int (*compar)(const void*, const void*, void*), void *userdata) { |
115 | if (nmemb <= 1) | |
116 | return; | |
117 | ||
118 | assert(base); | |
119 | qsort_r(base, nmemb, size, compar, userdata); | |
120 | } | |
121 | ||
75f32f04 ZJS |
122 | /** |
123 | * Normal memcpy requires src to be nonnull. We do nothing if n is 0. | |
124 | */ | |
125 | static inline void memcpy_safe(void *dst, const void *src, size_t n) { | |
126 | if (n == 0) | |
127 | return; | |
128 | assert(src); | |
129 | memcpy(dst, src, n); | |
130 | } | |
131 | ||
b5efdb8a LP |
132 | int on_ac_power(void); |
133 | ||
7d50b32a LP |
134 | #define memzero(x,l) (memset((x), 0, (l))) |
135 | #define zero(x) (memzero(&(x), sizeof(x))) | |
136 | ||
b5efdb8a LP |
137 | static inline void *mempset(void *s, int c, size_t n) { |
138 | memset(s, c, n); | |
139 | return (uint8_t*)s + n; | |
140 | } | |
a1937e67 | 141 | |
5c0d398d | 142 | static inline void _reset_errno_(int *saved_errno) { |
5c0aa72a LP |
143 | errno = *saved_errno; |
144 | } | |
145 | ||
2a371001 | 146 | #define PROTECT_ERRNO _cleanup_(_reset_errno_) __attribute__((unused)) int _saved_errno_ = errno |
5c0d398d | 147 | |
44dd2c6e DH |
148 | static inline int negative_errno(void) { |
149 | /* This helper should be used to shut up gcc if you know 'errno' is | |
150 | * negative. Instead of "return -errno;", use "return negative_errno();" | |
151 | * It will suppress bogus gcc warnings in case it assumes 'errno' might | |
152 | * be 0 and thus the caller's error-handling might not be triggered. */ | |
153 | assert_return(errno > 0, -EINVAL); | |
154 | return -errno; | |
155 | } | |
156 | ||
144e51ec | 157 | static inline unsigned u64log2(uint64_t n) { |
ec417ccc | 158 | #if __SIZEOF_LONG_LONG__ == 8 |
693eb9a2 | 159 | return (n > 1) ? (unsigned) __builtin_clzll(n) ^ 63U : 0; |
ec417ccc LP |
160 | #else |
161 | #error "Wut?" | |
162 | #endif | |
163 | } | |
164 | ||
165 | static inline unsigned u32ctz(uint32_t n) { | |
166 | #if __SIZEOF_INT__ == 4 | |
167 | return __builtin_ctz(n); | |
168 | #else | |
169 | #error "Wut?" | |
170 | #endif | |
144e51ec | 171 | } |
79d860fe | 172 | |
7d328b54 | 173 | static inline unsigned log2i(int x) { |
8fe90522 ZJS |
174 | assert(x > 0); |
175 | ||
176 | return __SIZEOF_INT__ * 8 - __builtin_clz(x) - 1; | |
177 | } | |
178 | ||
b5de6d98 MS |
179 | static inline unsigned log2u(unsigned x) { |
180 | assert(x > 0); | |
181 | ||
182 | return sizeof(unsigned) * 8 - __builtin_clz(x) - 1; | |
183 | } | |
184 | ||
185 | static inline unsigned log2u_round_up(unsigned x) { | |
186 | assert(x > 0); | |
187 | ||
188 | if (x == 1) | |
189 | return 0; | |
190 | ||
191 | return log2u(x - 1) + 1; | |
192 | } | |
193 | ||
bc9fd78c LP |
194 | int container_get_leader(const char *machine, pid_t *pid); |
195 | ||
671c3419 RM |
196 | int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *netns_fd, int *userns_fd, int *root_fd); |
197 | int namespace_enter(int pidns_fd, int mntns_fd, int netns_fd, int userns_fd, int root_fd); | |
bf108e55 | 198 | |
1c231f56 | 199 | uint64_t physical_memory(void); |
d8cf2ac7 | 200 | uint64_t physical_memory_scale(uint64_t v, uint64_t max); |
6db615c1 | 201 | |
83f8e808 LP |
202 | uint64_t system_tasks_max(void); |
203 | uint64_t system_tasks_max_scale(uint64_t v, uint64_t max); | |
204 | ||
3f6fd1ba | 205 | int version(void); |
68c58c67 LP |
206 | |
207 | int str_verscmp(const char *s1, const char *s2); | |
9ce17593 | 208 | |
e557b1a6 | 209 | void disable_coredumps(void); |