]>
Commit | Line | Data |
---|---|---|
03467c88 | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
60918275 | 2 | |
c2f1db8f | 3 | #pragma once |
60918275 | 4 | |
a7334b09 LP |
5 | /*** |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright 2010 Lennart Poettering | |
9 | ||
10 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
11 | under the terms of the GNU Lesser General Public License as published by |
12 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
13 | (at your option) any later version. |
14 | ||
15 | systemd is distributed in the hope that it will be useful, but | |
16 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 18 | Lesser General Public License for more details. |
a7334b09 | 19 | |
5430f7f2 | 20 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
22 | ***/ | |
23 | ||
31885cd5 | 24 | #include <alloca.h> |
370c860f | 25 | #include <fcntl.h> |
60918275 LP |
26 | #include <inttypes.h> |
27 | #include <time.h> | |
28 | #include <sys/time.h> | |
ec2002f8 | 29 | #include <stdarg.h> |
60918275 | 30 | #include <stdbool.h> |
5cb5a6ff | 31 | #include <stdlib.h> |
80876c20 | 32 | #include <stdio.h> |
9a34ec5f | 33 | #include <signal.h> |
82c121a4 | 34 | #include <sched.h> |
8f75a603 | 35 | #include <limits.h> |
25ea79fe | 36 | #include <sys/types.h> |
00dc5d76 | 37 | #include <sys/stat.h> |
3b63d2d3 | 38 | #include <dirent.h> |
68faf98c | 39 | #include <sys/resource.h> |
7d5e9c0f | 40 | #include <stddef.h> |
79d860fe | 41 | #include <unistd.h> |
d6dd604b | 42 | #include <locale.h> |
5862d652 | 43 | #include <mntent.h> |
eff05270 | 44 | #include <sys/socket.h> |
0254e944 | 45 | #include <sys/inotify.h> |
60918275 | 46 | |
ccd06097 ZJS |
47 | #if SIZEOF_PID_T == 4 |
48 | # define PID_FMT "%" PRIu32 | |
49 | #elif SIZEOF_PID_T == 2 | |
50 | # define PID_FMT "%" PRIu16 | |
51 | #else | |
52 | # error Unknown pid_t size | |
53 | #endif | |
54 | ||
55 | #if SIZEOF_UID_T == 4 | |
56 | # define UID_FMT "%" PRIu32 | |
57 | #elif SIZEOF_UID_T == 2 | |
58 | # define UID_FMT "%" PRIu16 | |
59 | #else | |
60 | # error Unknown uid_t size | |
61 | #endif | |
62 | ||
1c231f56 LP |
63 | #if SIZEOF_GID_T == 4 |
64 | # define GID_FMT "%" PRIu32 | |
65 | #elif SIZEOF_GID_T == 2 | |
66 | # define GID_FMT "%" PRIu16 | |
67 | #else | |
68 | # error Unknown gid_t size | |
69 | #endif | |
70 | ||
de0671ee ZJS |
71 | #if SIZEOF_TIME_T == 8 |
72 | # define PRI_TIME PRIu64 | |
1f2b7175 | 73 | #elif SIZEOF_TIME_T == 4 |
de0671ee ZJS |
74 | # define PRI_TIME PRIu32 |
75 | #else | |
76 | # error Unknown time_t size | |
77 | #endif | |
78 | ||
79 | #if SIZEOF_RLIM_T == 8 | |
80 | # define RLIM_FMT "%" PRIu64 | |
81 | #elif SIZEOF_RLIM_T == 4 | |
82 | # define RLIM_FMT "%" PRIu32 | |
83 | #else | |
84 | # error Unknown rlim_t size | |
85 | #endif | |
86 | ||
a838e6a1 | 87 | #include "macro.h" |
dced1557 | 88 | #include "missing.h" |
9a98c7a1 | 89 | #include "time-util.h" |
871d7de4 | 90 | |
44d8db9e | 91 | /* What is interpreted as whitespace? */ |
4a72ff34 | 92 | #define WHITESPACE " \t\n\r" |
e3e0314b ZJS |
93 | #define NEWLINE "\n\r" |
94 | #define QUOTES "\"\'" | |
95 | #define COMMENTS "#;" | |
96 | #define GLOB_CHARS "*?[" | |
44d8db9e | 97 | |
0ce5a806 MM |
98 | /* What characters are special in the shell? */ |
99 | /* must be escaped outside and inside double-quotes */ | |
100 | #define SHELL_NEED_ESCAPE "\"\\`$" | |
101 | /* can be escaped or double-quoted */ | |
102 | #define SHELL_NEED_QUOTES SHELL_NEED_ESCAPE GLOB_CHARS "'()<>|&;" | |
103 | ||
a7bc2c2a | 104 | #define FORMAT_BYTES_MAX 8 |
8b6c7120 | 105 | |
c1072ea0 | 106 | #define ANSI_HIGHLIGHT_ON "\x1B[1;39m" |
03b717a3 | 107 | #define ANSI_RED_ON "\x1B[31m" |
281605bf | 108 | #define ANSI_HIGHLIGHT_RED_ON "\x1B[1;31m" |
076a24ad | 109 | #define ANSI_GREEN_ON "\x1B[32m" |
2ee68f72 | 110 | #define ANSI_HIGHLIGHT_GREEN_ON "\x1B[1;32m" |
5f23d5b1 | 111 | #define ANSI_HIGHLIGHT_YELLOW_ON "\x1B[1;33m" |
c0fdf098 | 112 | #define ANSI_HIGHLIGHT_BLUE_ON "\x1B[1;34m" |
61cbdc4b | 113 | #define ANSI_HIGHLIGHT_OFF "\x1B[0m" |
984a2be4 | 114 | #define ANSI_ERASE_TO_END_OF_LINE "\x1B[K" |
61cbdc4b | 115 | |
2e857429 | 116 | size_t page_size(void) _pure_; |
37f85e66 | 117 | #define PAGE_ALIGN(l) ALIGN_TO((l), page_size()) |
118 | ||
60918275 | 119 | #define streq(a,b) (strcmp((a),(b)) == 0) |
3846aeeb | 120 | #define strneq(a, b, n) (strncmp((a), (b), (n)) == 0) |
b43d1d01 TA |
121 | #define strcaseeq(a,b) (strcasecmp((a),(b)) == 0) |
122 | #define strncaseeq(a, b, n) (strncasecmp((a), (b), (n)) == 0) | |
60918275 | 123 | |
44a6b1b6 | 124 | bool streq_ptr(const char *a, const char *b) _pure_; |
e05797fb | 125 | |
4b8772bf | 126 | #define new(t, n) ((t*) malloc_multiply(sizeof(t), (n))) |
60918275 LP |
127 | |
128 | #define new0(t, n) ((t*) calloc((n), sizeof(t))) | |
129 | ||
0f0dbc46 LP |
130 | #define newa(t, n) ((t*) alloca(sizeof(t)*(n))) |
131 | ||
7629889c LP |
132 | #define newa0(t, n) ((t*) alloca0(sizeof(t)*(n))) |
133 | ||
4b8772bf | 134 | #define newdup(t, p, n) ((t*) memdup_multiply(p, sizeof(t), (n))) |
888c7102 | 135 | |
60918275 LP |
136 | #define malloc0(n) (calloc((n), 1)) |
137 | ||
138 | static inline const char* yes_no(bool b) { | |
139 | return b ? "yes" : "no"; | |
140 | } | |
141 | ||
5232c42e LS |
142 | static inline const char* true_false(bool b) { |
143 | return b ? "true" : "false"; | |
144 | } | |
145 | ||
60918275 LP |
146 | static inline const char* strempty(const char *s) { |
147 | return s ? s : ""; | |
148 | } | |
149 | ||
150 | static inline const char* strnull(const char *s) { | |
151 | return s ? s : "(null)"; | |
152 | } | |
153 | ||
04fd6fe4 LP |
154 | static inline const char *strna(const char *s) { |
155 | return s ? s : "n/a"; | |
156 | } | |
157 | ||
9beb3f4d LP |
158 | static inline bool isempty(const char *p) { |
159 | return !p || !p[0]; | |
160 | } | |
161 | ||
11adc1ae LP |
162 | static inline char *startswith(const char *s, const char *prefix) { |
163 | size_t l; | |
164 | ||
165 | l = strlen(prefix); | |
166 | if (strncmp(s, prefix, l) == 0) | |
167 | return (char*) s + l; | |
168 | ||
df89481a KS |
169 | return NULL; |
170 | } | |
171 | ||
11adc1ae LP |
172 | static inline char *startswith_no_case(const char *s, const char *prefix) { |
173 | size_t l; | |
174 | ||
175 | l = strlen(prefix); | |
176 | if (strncasecmp(s, prefix, l) == 0) | |
177 | return (char*) s + l; | |
178 | ||
df89481a KS |
179 | return NULL; |
180 | } | |
181 | ||
44a6b1b6 | 182 | char *endswith(const char *s, const char *postfix) _pure_; |
60918275 | 183 | |
5cb36f41 | 184 | char *first_word(const char *s, const char *word) _pure_; |
79d6d816 | 185 | |
42f4e3c4 | 186 | int close_nointr(int fd); |
03e334a1 | 187 | int safe_close(int fd); |
3d94f76c | 188 | void safe_close_pair(int p[]); |
03e334a1 | 189 | |
5b6319dc | 190 | void close_many(const int fds[], unsigned n_fd); |
60918275 | 191 | |
5556b5fe LP |
192 | int parse_size(const char *t, off_t base, off_t *size); |
193 | ||
44a6b1b6 | 194 | int parse_boolean(const char *v) _pure_; |
3ba686c1 | 195 | int parse_pid(const char *s, pid_t* ret_pid); |
034a2a52 LP |
196 | int parse_uid(const char *s, uid_t* ret_uid); |
197 | #define parse_gid(s, ret_uid) parse_uid(s, ret_uid) | |
85261803 LP |
198 | |
199 | int safe_atou(const char *s, unsigned *ret_u); | |
200 | int safe_atoi(const char *s, int *ret_i); | |
201 | ||
8f75a603 LP |
202 | int safe_atollu(const char *s, unsigned long long *ret_u); |
203 | int safe_atolli(const char *s, long long int *ret_i); | |
204 | ||
f7900e25 TA |
205 | int safe_atod(const char *s, double *ret_d); |
206 | ||
b914e211 LP |
207 | int safe_atou8(const char *s, uint8_t *ret); |
208 | ||
8507eb20 | 209 | #if LONG_MAX == INT_MAX |
8f75a603 LP |
210 | static inline int safe_atolu(const char *s, unsigned long *ret_u) { |
211 | assert_cc(sizeof(unsigned long) == sizeof(unsigned)); | |
212 | return safe_atou(s, (unsigned*) ret_u); | |
213 | } | |
214 | static inline int safe_atoli(const char *s, long int *ret_u) { | |
215 | assert_cc(sizeof(long int) == sizeof(int)); | |
216 | return safe_atoi(s, (int*) ret_u); | |
217 | } | |
218 | #else | |
219 | static inline int safe_atolu(const char *s, unsigned long *ret_u) { | |
220 | assert_cc(sizeof(unsigned long) == sizeof(unsigned long long)); | |
221 | return safe_atollu(s, (unsigned long long*) ret_u); | |
222 | } | |
223 | static inline int safe_atoli(const char *s, long int *ret_u) { | |
224 | assert_cc(sizeof(long int) == sizeof(long long int)); | |
225 | return safe_atolli(s, (long long int*) ret_u); | |
226 | } | |
227 | #endif | |
228 | ||
a838e6a1 LP |
229 | static inline int safe_atou32(const char *s, uint32_t *ret_u) { |
230 | assert_cc(sizeof(uint32_t) == sizeof(unsigned)); | |
231 | return safe_atou(s, (unsigned*) ret_u); | |
232 | } | |
233 | ||
8f75a603 | 234 | static inline int safe_atoi32(const char *s, int32_t *ret_i) { |
a838e6a1 | 235 | assert_cc(sizeof(int32_t) == sizeof(int)); |
8f75a603 | 236 | return safe_atoi(s, (int*) ret_i); |
a838e6a1 LP |
237 | } |
238 | ||
8f75a603 LP |
239 | static inline int safe_atou64(const char *s, uint64_t *ret_u) { |
240 | assert_cc(sizeof(uint64_t) == sizeof(unsigned long long)); | |
241 | return safe_atollu(s, (unsigned long long*) ret_u); | |
242 | } | |
034c6ed7 | 243 | |
8f75a603 LP |
244 | static inline int safe_atoi64(const char *s, int64_t *ret_i) { |
245 | assert_cc(sizeof(int64_t) == sizeof(long long int)); | |
246 | return safe_atolli(s, (long long int*) ret_i); | |
247 | } | |
034c6ed7 | 248 | |
781fa938 LP |
249 | int safe_atou16(const char *s, uint16_t *ret); |
250 | int safe_atoi16(const char *s, int16_t *ret); | |
251 | ||
a2a5291b | 252 | const char* split(const char **state, size_t *l, const char *separator, bool quoted); |
a41e8209 | 253 | |
034c6ed7 | 254 | #define FOREACH_WORD(word, length, s, state) \ |
bf85c24d | 255 | _FOREACH_WORD(word, length, s, WHITESPACE, false, state) |
65d2ebdc LP |
256 | |
257 | #define FOREACH_WORD_SEPARATOR(word, length, s, separator, state) \ | |
bf85c24d | 258 | _FOREACH_WORD(word, length, s, separator, false, state) |
a41e8209 | 259 | |
034c6ed7 | 260 | #define FOREACH_WORD_QUOTED(word, length, s, state) \ |
bf85c24d SP |
261 | _FOREACH_WORD(word, length, s, WHITESPACE, true, state) |
262 | ||
bf85c24d | 263 | #define _FOREACH_WORD(word, length, s, separator, quoted, state) \ |
a2a5291b | 264 | for ((state) = (s), (word) = split(&(state), &(length), (separator), (quoted)); (word); (word) = split(&(state), &(length), (separator), (quoted))) |
034c6ed7 | 265 | |
034c6ed7 LP |
266 | pid_t get_parent_of_pid(pid_t pid, pid_t *ppid); |
267 | ||
44d8db9e | 268 | char *strappend(const char *s, const char *suffix); |
fab56fc5 LP |
269 | char *strnappend(const char *s, const char *suffix, size_t length); |
270 | ||
271 | char *replace_env(const char *format, char **env); | |
272 | char **replace_env_argv(char **argv, char **env); | |
44d8db9e | 273 | |
849958d1 | 274 | int readlinkat_malloc(int fd, const char *p, char **ret); |
87f0e418 | 275 | int readlink_malloc(const char *p, char **r); |
9a67bcf2 | 276 | int readlink_value(const char *p, char **ret); |
2c7108c4 | 277 | int readlink_and_make_absolute(const char *p, char **r); |
83096483 | 278 | int readlink_and_canonicalize(const char *p, char **r); |
87f0e418 | 279 | |
2a987ee8 | 280 | int reset_all_signal_handlers(void); |
1dedb74a | 281 | int reset_signal_mask(void); |
2a987ee8 | 282 | |
4a72ff34 | 283 | char *strstrip(char *s); |
ee9b5e01 | 284 | char *delete_chars(char *s, const char *bad); |
7072ced8 | 285 | char *truncate_nl(char *s); |
ee9b5e01 | 286 | |
4a72ff34 LP |
287 | char *file_in_same_dir(const char *path, const char *filename); |
288 | ||
c32dd69b LP |
289 | int rmdir_parents(const char *path, const char *stop); |
290 | ||
93b5eaec | 291 | int get_process_state(pid_t pid); |
87d2c1ff LP |
292 | int get_process_comm(pid_t pid, char **name); |
293 | int get_process_cmdline(pid_t pid, size_t max_length, bool comm_fallback, char **line); | |
294 | int get_process_exe(pid_t pid, char **name); | |
7e4ab3c5 | 295 | int get_process_uid(pid_t pid, uid_t *uid); |
901c3d0d | 296 | int get_process_gid(pid_t pid, gid_t *gid); |
3a832116 | 297 | int get_process_capeff(pid_t pid, char **capeff); |
ad450c3e JF |
298 | int get_process_cwd(pid_t pid, char **cwd); |
299 | int get_process_root(pid_t pid, char **root); | |
c593bb36 | 300 | int get_process_environ(pid_t pid, char **environ); |
7072ced8 | 301 | |
bcb92f48 CR |
302 | char hexchar(int x) _const_; |
303 | int unhexchar(char c) _const_; | |
304 | char octchar(int x) _const_; | |
305 | int unoctchar(char c) _const_; | |
306 | char decchar(int x) _const_; | |
307 | int undecchar(char c) _const_; | |
4fe88d28 LP |
308 | |
309 | char *cescape(const char *s); | |
310 | char *cunescape(const char *s); | |
6febfd0d | 311 | char *cunescape_length(const char *s, size_t length); |
5b4c61cd | 312 | char *cunescape_length_with_prefix(const char *s, size_t length, const char *prefix); |
6febfd0d LP |
313 | |
314 | char *xescape(const char *s, const char *bad); | |
315 | ||
4fe88d28 LP |
316 | char *ascii_strlower(char *path); |
317 | ||
44a6b1b6 ZJS |
318 | bool dirent_is_file(const struct dirent *de) _pure_; |
319 | bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix) _pure_; | |
87d2c1ff | 320 | |
a34bf9db | 321 | bool hidden_file(const char *filename) _pure_; |
c85dc17b | 322 | |
44a6b1b6 | 323 | bool chars_intersect(const char *a, const char *b) _pure_; |
db12775d | 324 | |
843d2643 | 325 | int make_stdio(int fd); |
ade509ce | 326 | int make_null_stdio(void); |
cd3bd60a | 327 | int make_console_stdio(void); |
843d2643 | 328 | |
b89446bb | 329 | int dev_urandom(void *p, size_t n); |
9bf3b535 | 330 | void random_bytes(void *p, size_t n); |
ef309a68 | 331 | void initialize_srand(void); |
9bf3b535 LP |
332 | |
333 | static inline uint64_t random_u64(void) { | |
334 | uint64_t u; | |
335 | random_bytes(&u, sizeof(u)); | |
336 | return u; | |
337 | } | |
338 | ||
339 | static inline uint32_t random_u32(void) { | |
340 | uint32_t u; | |
341 | random_bytes(&u, sizeof(u)); | |
342 | return u; | |
343 | } | |
d3782d60 | 344 | |
f8b69d1d | 345 | /* For basic lookup tables with strictly enumerated entries */ |
4e240ab0 MS |
346 | #define __DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \ |
347 | scope const char *name##_to_string(type i) { \ | |
1dccbe19 LP |
348 | if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \ |
349 | return NULL; \ | |
350 | return name##_table[i]; \ | |
351 | } \ | |
4e240ab0 | 352 | scope type name##_from_string(const char *s) { \ |
1dccbe19 | 353 | type i; \ |
2c3d81d4 TG |
354 | if (!s) \ |
355 | return (type) -1; \ | |
1dccbe19 | 356 | for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \ |
4fd5948e LP |
357 | if (name##_table[i] && \ |
358 | streq(name##_table[i], s)) \ | |
1dccbe19 LP |
359 | return i; \ |
360 | return (type) -1; \ | |
361 | } \ | |
362 | struct __useless_struct_to_allow_trailing_semicolon__ | |
363 | ||
4e240ab0 MS |
364 | #define DEFINE_STRING_TABLE_LOOKUP(name,type) __DEFINE_STRING_TABLE_LOOKUP(name,type,) |
365 | #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP(name,type) __DEFINE_STRING_TABLE_LOOKUP(name,type,static) | |
1dccbe19 | 366 | |
f8b69d1d MS |
367 | /* For string conversions where numbers are also acceptable */ |
368 | #define DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(name,type,max) \ | |
369 | int name##_to_string_alloc(type i, char **str) { \ | |
370 | char *s; \ | |
371 | int r; \ | |
372 | if (i < 0 || i > max) \ | |
373 | return -ERANGE; \ | |
374 | if (i < (type) ELEMENTSOF(name##_table)) { \ | |
375 | s = strdup(name##_table[i]); \ | |
376 | if (!s) \ | |
377 | return log_oom(); \ | |
378 | } else { \ | |
379 | r = asprintf(&s, "%u", i); \ | |
380 | if (r < 0) \ | |
381 | return log_oom(); \ | |
382 | } \ | |
383 | *str = s; \ | |
384 | return 0; \ | |
385 | } \ | |
386 | type name##_from_string(const char *s) { \ | |
387 | type i; \ | |
388 | unsigned u = 0; \ | |
389 | assert(s); \ | |
390 | for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \ | |
391 | if (name##_table[i] && \ | |
392 | streq(name##_table[i], s)) \ | |
393 | return i; \ | |
8511dd18 | 394 | if (safe_atou(s, &u) >= 0 && u <= max) \ |
f8b69d1d MS |
395 | return (type) u; \ |
396 | return (type) -1; \ | |
397 | } \ | |
398 | struct __useless_struct_to_allow_trailing_semicolon__ | |
399 | ||
3a0ecb08 LP |
400 | int fd_nonblock(int fd, bool nonblock); |
401 | int fd_cloexec(int fd, bool cloexec); | |
402 | ||
a0d40ac5 LP |
403 | int close_all_fds(const int except[], unsigned n_except); |
404 | ||
42856c10 LP |
405 | bool fstype_is_network(const char *fstype); |
406 | ||
601f6a1e LP |
407 | int chvt(int vt); |
408 | ||
8f2d43a0 | 409 | int read_one_char(FILE *f, char *ret, usec_t timeout, bool *need_nl); |
6294aa76 LP |
410 | int ask_char(char *ret, const char *replies, const char *text, ...) _printf_(3, 4); |
411 | int ask_string(char **ret, const char *text, ...) _printf_(2, 3); | |
80876c20 | 412 | |
512947d4 | 413 | int reset_terminal_fd(int fd, bool switch_to_text); |
6ea832a2 LP |
414 | int reset_terminal(const char *name); |
415 | ||
80876c20 | 416 | int open_terminal(const char *name, int mode); |
af6da548 | 417 | int acquire_terminal(const char *name, bool fail, bool force, bool ignore_tiocstty_eperm, usec_t timeout); |
80876c20 LP |
418 | int release_terminal(void); |
419 | ||
420 | int flush_fd(int fd); | |
421 | ||
9a34ec5f LP |
422 | int ignore_signals(int sig, ...); |
423 | int default_signals(int sig, ...); | |
424 | int sigaction_many(const struct sigaction *sa, ...); | |
a337c6fc | 425 | |
5a3ab509 | 426 | int fopen_temporary(const char *path, FILE **_f, char **_temp_path); |
8d567588 | 427 | |
eb22ac37 | 428 | ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll); |
553acb7b | 429 | int loop_write(int fd, const void *buf, size_t nbytes, bool do_poll); |
8d567588 | 430 | |
8407a5d0 LP |
431 | bool is_device_path(const char *path); |
432 | ||
01f78473 | 433 | int dir_is_empty(const char *path); |
844ec79b | 434 | char* dirname_malloc(const char *path); |
01f78473 | 435 | |
5b6319dc | 436 | void rename_process(const char name[8]); |
2d368c14 | 437 | |
7d793605 | 438 | void sigset_add_many(sigset_t *ss, ...); |
856a5a7d | 439 | int sigprocmask_many(int how, ...); |
7d793605 | 440 | |
344de609 | 441 | bool hostname_is_set(void); |
7c5f152a | 442 | |
f1566e63 | 443 | char* lookup_uid(uid_t uid); |
7c5f152a | 444 | char* gethostname_malloc(void); |
ef2f1067 | 445 | char* getlogname_malloc(void); |
7c5f152a | 446 | char* getusername_malloc(void); |
fc116c6a LP |
447 | |
448 | int getttyname_malloc(int fd, char **r); | |
449 | int getttyname_harder(int fd, char **r); | |
450 | ||
4d6d6518 LP |
451 | int get_ctty_devnr(pid_t pid, dev_t *d); |
452 | int get_ctty(pid_t, dev_t *_devnr, char **r); | |
8c6db833 LP |
453 | |
454 | int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid); | |
f4b47811 | 455 | int fchmod_and_fchown(int fd, mode_t mode, uid_t uid, gid_t gid); |
8c6db833 | 456 | |
979ef53a DR |
457 | int is_fd_on_temporary_fs(int fd); |
458 | ||
597f43c7 | 459 | int rm_rf_children(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev); |
f56d5db9 | 460 | int rm_rf_children_dangerous(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev); |
ad293f5a | 461 | int rm_rf(const char *path, bool only_dirs, bool delete_root, bool honour_sticky); |
f56d5db9 | 462 | int rm_rf_dangerous(const char *path, bool only_dirs, bool delete_root, bool honour_sticky); |
ef2f1067 | 463 | |
1325aa42 LP |
464 | int pipe_eof(int fd); |
465 | ||
82c121a4 LP |
466 | cpu_set_t* cpu_set_malloc(unsigned *ncpus); |
467 | ||
44b601bc LP |
468 | int status_vprintf(const char *status, bool ellipse, bool ephemeral, const char *format, va_list ap) _printf_(4,0); |
469 | int status_printf(const char *status, bool ellipse, bool ephemeral, const char *format, ...) _printf_(4,5); | |
9e58ff9c | 470 | |
81beb750 | 471 | int fd_columns(int fd); |
72f59706 | 472 | unsigned columns(void); |
8f2d43a0 LP |
473 | int fd_lines(int fd); |
474 | unsigned lines(void); | |
ed757c0c LP |
475 | void columns_lines_cache_reset(int _unused_ signum); |
476 | ||
477 | bool on_tty(void); | |
8f2d43a0 | 478 | |
0b5a519c DS |
479 | static inline const char *ansi_highlight(void) { |
480 | return on_tty() ? ANSI_HIGHLIGHT_ON : ""; | |
481 | } | |
482 | ||
483 | static inline const char *ansi_highlight_red(void) { | |
484 | return on_tty() ? ANSI_HIGHLIGHT_RED_ON : ""; | |
485 | } | |
486 | ||
487 | static inline const char *ansi_highlight_green(void) { | |
488 | return on_tty() ? ANSI_HIGHLIGHT_GREEN_ON : ""; | |
489 | } | |
490 | ||
dbc2c080 LP |
491 | static inline const char *ansi_highlight_yellow(void) { |
492 | return on_tty() ? ANSI_HIGHLIGHT_YELLOW_ON : ""; | |
493 | } | |
494 | ||
c0fdf098 ZJS |
495 | static inline const char *ansi_highlight_blue(void) { |
496 | return on_tty() ? ANSI_HIGHLIGHT_BLUE_ON : ""; | |
497 | } | |
498 | ||
0b5a519c DS |
499 | static inline const char *ansi_highlight_off(void) { |
500 | return on_tty() ? ANSI_HIGHLIGHT_OFF : ""; | |
501 | } | |
502 | ||
9d9951a4 HH |
503 | int files_same(const char *filea, const char *fileb); |
504 | ||
b4f10a5e LP |
505 | int running_in_chroot(void); |
506 | ||
72f59706 | 507 | char *ellipsize(const char *s, size_t length, unsigned percent); |
f405e86d | 508 | /* bytes columns */ |
72f59706 | 509 | char *ellipsize_mem(const char *s, size_t old_length, size_t new_length, unsigned percent); |
8fe914ec | 510 | |
c38dfac9 | 511 | int touch_file(const char *path, bool parents, usec_t stamp, uid_t uid, gid_t gid, mode_t mode); |
f6144808 LP |
512 | int touch(const char *path); |
513 | ||
97c4a07d | 514 | char *unquote(const char *s, const char *quotes); |
5f7c426e | 515 | char *normalize_env_assignment(const char *s); |
11ce3427 | 516 | |
8e12a6ae | 517 | int wait_for_terminate(pid_t pid, siginfo_t *status); |
820d3acf | 518 | int wait_for_terminate_and_warn(const char *name, pid_t pid, bool check_exit_code); |
2e78aa99 | 519 | |
919ce0b7 | 520 | noreturn void freeze(void); |
3c14d26c | 521 | |
44a6b1b6 | 522 | bool null_or_empty(struct stat *st) _pure_; |
83096483 | 523 | int null_or_empty_path(const char *fn); |
ed88bcfb | 524 | int null_or_empty_fd(int fd); |
00dc5d76 | 525 | |
a247755d | 526 | DIR *xopendirat(int dirfd, const char *name, int flags); |
3b63d2d3 | 527 | |
e23a0ce8 LP |
528 | char *fstab_node_to_udev_node(const char *p); |
529 | ||
21baf21a | 530 | char *resolve_dev_console(char **active); |
f212ac12 | 531 | bool tty_is_vc(const char *tty); |
3043935f | 532 | bool tty_is_vc_resolve(const char *tty); |
44a6b1b6 | 533 | bool tty_is_console(const char *tty) _pure_; |
98a28fef | 534 | int vtnr_from_tty(const char *tty); |
e3aa71c3 LP |
535 | const char *default_term_for_tty(const char *tty); |
536 | ||
e2680723 | 537 | void execute_directory(const char *directory, DIR *_d, usec_t timeout, char *argv[]); |
83cc030f | 538 | |
430c18ed LP |
539 | int kill_and_sigcont(pid_t pid, int sig); |
540 | ||
05feefe0 LP |
541 | bool nulstr_contains(const char*nulstr, const char *needle); |
542 | ||
6faa1114 LP |
543 | bool plymouth_running(void); |
544 | ||
44a6b1b6 | 545 | bool hostname_is_valid(const char *s) _pure_; |
e724b063 | 546 | char* hostname_cleanup(char *s, bool lowercase); |
9beb3f4d | 547 | |
7f0d207d | 548 | bool machine_name_is_valid(const char *s) _pure_; |
c2ce6a3d | 549 | bool image_name_is_valid(const char *s) _pure_; |
7f0d207d | 550 | |
9beb3f4d LP |
551 | char* strshorten(char *s, size_t l); |
552 | ||
6ea832a2 LP |
553 | int terminal_vhangup_fd(int fd); |
554 | int terminal_vhangup(const char *name); | |
555 | ||
556 | int vt_disallocate(const char *name); | |
557 | ||
424a19f8 | 558 | int symlink_atomic(const char *from, const char *to); |
1554afae LP |
559 | int mknod_atomic(const char *path, mode_t mode, dev_t dev); |
560 | int mkfifo_atomic(const char *path, mode_t mode); | |
34ca941c LP |
561 | |
562 | int fchmod_umask(int fd, mode_t mode); | |
563 | ||
44a6b1b6 | 564 | bool display_is_local(const char *display) _pure_; |
4d6d6518 LP |
565 | int socket_from_display(const char *display, char **path); |
566 | ||
d05c5031 | 567 | int get_user_creds(const char **username, uid_t *uid, gid_t *gid, const char **home, const char **shell); |
4b67834e | 568 | int get_group_creds(const char **groupname, gid_t *gid); |
1cccf435 | 569 | |
4468addc | 570 | int in_gid(gid_t gid); |
43673799 LP |
571 | int in_group(const char *name); |
572 | ||
59164be4 | 573 | char* uid_to_name(uid_t uid); |
4468addc | 574 | char* gid_to_name(gid_t gid); |
59164be4 | 575 | |
8092a428 | 576 | int glob_exists(const char *path); |
8d98da3f | 577 | int glob_extend(char ***strv, const char *path); |
8092a428 | 578 | |
83096483 LP |
579 | int dirent_ensure_type(DIR *d, struct dirent *de); |
580 | ||
034a2a52 | 581 | int get_files_in_directory(const char *path, char ***list); |
83096483 | 582 | |
b7def684 | 583 | char *strjoin(const char *x, ...) _sentinel_; |
911a4828 | 584 | |
b636465b LP |
585 | bool is_main_thread(void); |
586 | ||
01f83c1c JT |
587 | static inline bool _pure_ in_charset(const char *s, const char* charset) { |
588 | assert(s); | |
589 | assert(charset); | |
590 | return s[strspn(s, charset)] == '\0'; | |
591 | } | |
ab1f0633 | 592 | |
94959f0f LP |
593 | int block_get_whole_disk(dev_t d, dev_t *ret); |
594 | ||
e23a0ce8 | 595 | #define NULSTR_FOREACH(i, l) \ |
c4e2ceae LP |
596 | for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1) |
597 | ||
5c0532d1 LP |
598 | #define NULSTR_FOREACH_PAIR(i, j, l) \ |
599 | for ((i) = (l), (j) = strchr((i), 0)+1; (i) && *(i); (i) = strchr((j), 0)+1, (j) = *(i) ? strchr((i), 0)+1 : (i)) | |
600 | ||
f8b69d1d | 601 | int ioprio_class_to_string_alloc(int i, char **s); |
1dccbe19 LP |
602 | int ioprio_class_from_string(const char *s); |
603 | ||
44a6b1b6 ZJS |
604 | const char *sigchld_code_to_string(int i) _const_; |
605 | int sigchld_code_from_string(const char *s) _pure_; | |
1dccbe19 | 606 | |
f8b69d1d | 607 | int log_facility_unshifted_to_string_alloc(int i, char **s); |
7d76f312 | 608 | int log_facility_unshifted_from_string(const char *s); |
1dccbe19 | 609 | |
f8b69d1d | 610 | int log_level_to_string_alloc(int i, char **s); |
1dccbe19 LP |
611 | int log_level_from_string(const char *s); |
612 | ||
f8b69d1d | 613 | int sched_policy_to_string_alloc(int i, char **s); |
1dccbe19 LP |
614 | int sched_policy_from_string(const char *s); |
615 | ||
44a6b1b6 ZJS |
616 | const char *rlimit_to_string(int i) _const_; |
617 | int rlimit_from_string(const char *s) _pure_; | |
1dccbe19 | 618 | |
f8b69d1d | 619 | int ip_tos_to_string_alloc(int i, char **s); |
4fd5948e LP |
620 | int ip_tos_from_string(const char *s); |
621 | ||
44a6b1b6 ZJS |
622 | const char *signal_to_string(int i) _const_; |
623 | int signal_from_string(const char *s) _pure_; | |
2e22afe9 | 624 | |
8a0867d6 LP |
625 | int signal_from_string_try_harder(const char *s); |
626 | ||
9a0e6896 LP |
627 | extern int saved_argc; |
628 | extern char **saved_argv; | |
629 | ||
65457142 FC |
630 | bool kexec_loaded(void); |
631 | ||
44a6b1b6 | 632 | int prot_from_flags(int flags) _const_; |
87d2c1ff | 633 | |
babfc091 LP |
634 | char *format_bytes(char *buf, size_t l, off_t t); |
635 | ||
8f2d43a0 | 636 | int fd_wait_for_event(int fd, int event, usec_t timeout); |
df50185b | 637 | |
750ef272 | 638 | void* memdup(const void *p, size_t l) _alloc_(2); |
55d7bfc1 | 639 | |
1e5678d0 LP |
640 | int is_kernel_thread(pid_t pid); |
641 | ||
bb99a35a LP |
642 | int fd_inc_sndbuf(int fd, size_t n); |
643 | int fd_inc_rcvbuf(int fd, size_t n); | |
6bb92a16 | 644 | |
9bdc770c | 645 | int fork_agent(pid_t *pid, const int except[], unsigned n_except, const char *path, ...); |
6bb92a16 | 646 | |
68faf98c LP |
647 | int setrlimit_closest(int resource, const struct rlimit *rlim); |
648 | ||
ab94af92 LP |
649 | int getenv_for_pid(pid_t pid, const char *field, char **_value); |
650 | ||
44a6b1b6 | 651 | bool is_valid_documentation_url(const char *url) _pure_; |
49dbfa7b | 652 | |
9be346c9 | 653 | bool in_initrd(void); |
069cfc85 LP |
654 | |
655 | void warn_melody(void); | |
656 | ||
7c5f152a | 657 | int get_home_dir(char **ret); |
2cfbd749 | 658 | int get_shell(char **_ret); |
2fbe635a | 659 | |
a740c14c MS |
660 | static inline void freep(void *p) { |
661 | free(*(void**) p); | |
662 | } | |
663 | ||
14bf2c9d LP |
664 | #define DEFINE_TRIVIAL_CLEANUP_FUNC(type, func) \ |
665 | static inline void func##p(type *p) { \ | |
666 | if (*p) \ | |
667 | func(*p); \ | |
668 | } \ | |
669 | struct __useless_struct_to_allow_trailing_semicolon__ | |
dfb33a97 LP |
670 | |
671 | static inline void closep(int *fd) { | |
03e334a1 | 672 | safe_close(*fd); |
dfb33a97 LP |
673 | } |
674 | ||
dfb33a97 LP |
675 | static inline void umaskp(mode_t *u) { |
676 | umask(*u); | |
763c7aa2 ZJS |
677 | } |
678 | ||
3d94f76c LP |
679 | static inline void close_pairp(int (*p)[2]) { |
680 | safe_close_pair(*p); | |
04d39279 LP |
681 | } |
682 | ||
14bf2c9d LP |
683 | DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, fclose); |
684 | DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, pclose); | |
685 | DEFINE_TRIVIAL_CLEANUP_FUNC(DIR*, closedir); | |
686 | DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, endmntent); | |
5862d652 | 687 | |
dfb33a97 | 688 | #define _cleanup_free_ _cleanup_(freep) |
dfb33a97 | 689 | #define _cleanup_close_ _cleanup_(closep) |
dfb33a97 LP |
690 | #define _cleanup_umask_ _cleanup_(umaskp) |
691 | #define _cleanup_globfree_ _cleanup_(globfree) | |
1ca208fb ZJS |
692 | #define _cleanup_fclose_ _cleanup_(fclosep) |
693 | #define _cleanup_pclose_ _cleanup_(pclosep) | |
694 | #define _cleanup_closedir_ _cleanup_(closedirp) | |
5862d652 | 695 | #define _cleanup_endmntent_ _cleanup_(endmntentp) |
3d94f76c | 696 | #define _cleanup_close_pair_ _cleanup_(close_pairp) |
c84a9488 | 697 | |
750ef272 | 698 | _malloc_ _alloc_(1, 2) static inline void *malloc_multiply(size_t a, size_t b) { |
368504f4 | 699 | if (_unlikely_(b != 0 && a > ((size_t) -1) / b)) |
4b8772bf LP |
700 | return NULL; |
701 | ||
702 | return malloc(a * b); | |
703 | } | |
704 | ||
9489490a DH |
705 | _alloc_(2, 3) static inline void *realloc_multiply(void *p, size_t a, size_t b) { |
706 | if (_unlikely_(b != 0 && a > ((size_t) -1) / b)) | |
707 | return NULL; | |
708 | ||
709 | return realloc(p, a * b); | |
710 | } | |
711 | ||
750ef272 | 712 | _alloc_(2, 3) static inline void *memdup_multiply(const void *p, size_t a, size_t b) { |
368504f4 | 713 | if (_unlikely_(b != 0 && a > ((size_t) -1) / b)) |
4b8772bf LP |
714 | return NULL; |
715 | ||
716 | return memdup(p, a * b); | |
717 | } | |
0b507b17 | 718 | |
ae6c3cc0 | 719 | bool filename_is_valid(const char *p) _pure_; |
44a6b1b6 ZJS |
720 | bool path_is_safe(const char *p) _pure_; |
721 | bool string_is_safe(const char *p) _pure_; | |
6294aa76 | 722 | bool string_has_cc(const char *p, const char *ok) _pure_; |
cfbc22ab | 723 | |
e3e0314b ZJS |
724 | /** |
725 | * Check if a string contains any glob patterns. | |
726 | */ | |
727 | _pure_ static inline bool string_is_glob(const char *p) { | |
728 | return !!strpbrk(p, GLOB_CHARS); | |
729 | } | |
730 | ||
a9e12476 KS |
731 | void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size, |
732 | int (*compar) (const void *, const void *, void *), | |
733 | void *arg); | |
09017585 MS |
734 | |
735 | bool is_locale_utf8(void); | |
c339d977 MS |
736 | |
737 | typedef enum DrawSpecialChar { | |
6b01f1d3 | 738 | DRAW_TREE_VERTICAL, |
45a5ff0d MS |
739 | DRAW_TREE_BRANCH, |
740 | DRAW_TREE_RIGHT, | |
55c0b89c | 741 | DRAW_TREE_SPACE, |
c339d977 | 742 | DRAW_TRIANGULAR_BULLET, |
3deadb91 | 743 | DRAW_BLACK_CIRCLE, |
6b01f1d3 | 744 | DRAW_ARROW, |
13f8b8cb | 745 | DRAW_DASH, |
c339d977 MS |
746 | _DRAW_SPECIAL_CHAR_MAX |
747 | } DrawSpecialChar; | |
6b01f1d3 | 748 | |
c339d977 | 749 | const char *draw_special_char(DrawSpecialChar ch); |
409bc9c3 LP |
750 | |
751 | char *strreplace(const char *text, const char *old_string, const char *new_string); | |
e8bc0ea2 LP |
752 | |
753 | char *strip_tab_ansi(char **p, size_t *l); | |
240dbaa4 LP |
754 | |
755 | int on_ac_power(void); | |
f74e605f | 756 | |
4cf7ea55 MM |
757 | int search_and_fopen(const char *path, const char *mode, const char *root, const char **search, FILE **_f); |
758 | int search_and_fopen_nulstr(const char *path, const char *mode, const char *root, const char *search, FILE **_f); | |
fabe5c0e | 759 | |
9db11a99 LP |
760 | #define FOREACH_LINE(line, f, on_error) \ |
761 | for (;;) \ | |
f74e605f LP |
762 | if (!fgets(line, sizeof(line), f)) { \ |
763 | if (ferror(f)) { \ | |
764 | on_error; \ | |
765 | } \ | |
766 | break; \ | |
767 | } else | |
9db11a99 LP |
768 | |
769 | #define FOREACH_DIRENT(de, d, on_error) \ | |
770 | for (errno = 0, de = readdir(d);; errno = 0, de = readdir(d)) \ | |
771 | if (!de) { \ | |
8333c77e | 772 | if (errno > 0) { \ |
9db11a99 LP |
773 | on_error; \ |
774 | } \ | |
775 | break; \ | |
a34bf9db | 776 | } else if (hidden_file((de)->d_name)) \ |
9db11a99 LP |
777 | continue; \ |
778 | else | |
cd61c3bf LP |
779 | |
780 | #define FOREACH_DIRENT_ALL(de, d, on_error) \ | |
781 | for (errno = 0, de = readdir(d);; errno = 0, de = readdir(d)) \ | |
782 | if (!de) { \ | |
783 | if (errno > 0) { \ | |
784 | on_error; \ | |
785 | } \ | |
786 | break; \ | |
787 | } else | |
6282c859 MS |
788 | |
789 | static inline void *mempset(void *s, int c, size_t n) { | |
790 | memset(s, c, n); | |
dfb33a97 | 791 | return (uint8_t*)s + n; |
6282c859 | 792 | } |
66e35261 LP |
793 | |
794 | char *hexmem(const void *p, size_t l); | |
2181a7f5 LP |
795 | void *unhexmem(const char *p, size_t l); |
796 | ||
a432cb69 | 797 | char *strextend(char **x, ...) _sentinel_; |
9a17484d | 798 | char *strrep(const char *s, unsigned n); |
392d5b37 | 799 | |
ca2d3784 ZJS |
800 | void* greedy_realloc(void **p, size_t *allocated, size_t need, size_t size); |
801 | void* greedy_realloc0(void **p, size_t *allocated, size_t need, size_t size); | |
802 | #define GREEDY_REALLOC(array, allocated, need) \ | |
803 | greedy_realloc((void**) &(array), &(allocated), (need), sizeof((array)[0])) | |
804 | ||
805 | #define GREEDY_REALLOC0(array, allocated, need) \ | |
806 | greedy_realloc0((void**) &(array), &(allocated), (need), sizeof((array)[0])) | |
a1937e67 | 807 | |
5c0d398d | 808 | static inline void _reset_errno_(int *saved_errno) { |
5c0aa72a LP |
809 | errno = *saved_errno; |
810 | } | |
811 | ||
2a371001 | 812 | #define PROTECT_ERRNO _cleanup_(_reset_errno_) __attribute__((unused)) int _saved_errno_ = errno |
5c0d398d | 813 | |
44dd2c6e DH |
814 | static inline int negative_errno(void) { |
815 | /* This helper should be used to shut up gcc if you know 'errno' is | |
816 | * negative. Instead of "return -errno;", use "return negative_errno();" | |
817 | * It will suppress bogus gcc warnings in case it assumes 'errno' might | |
818 | * be 0 and thus the caller's error-handling might not be triggered. */ | |
819 | assert_return(errno > 0, -EINVAL); | |
820 | return -errno; | |
821 | } | |
822 | ||
d6dd604b | 823 | struct _umask_struct_ { |
5c0d398d LP |
824 | mode_t mask; |
825 | bool quit; | |
826 | }; | |
827 | ||
d6dd604b | 828 | static inline void _reset_umask_(struct _umask_struct_ *s) { |
5c0d398d LP |
829 | umask(s->mask); |
830 | }; | |
831 | ||
832 | #define RUN_WITH_UMASK(mask) \ | |
d6dd604b | 833 | for (_cleanup_(_reset_umask_) struct _umask_struct_ _saved_umask_ = { umask(mask), false }; \ |
5c0d398d LP |
834 | !_saved_umask_.quit ; \ |
835 | _saved_umask_.quit = true) | |
144e51ec CR |
836 | |
837 | static inline unsigned u64log2(uint64_t n) { | |
ec417ccc | 838 | #if __SIZEOF_LONG_LONG__ == 8 |
693eb9a2 | 839 | return (n > 1) ? (unsigned) __builtin_clzll(n) ^ 63U : 0; |
ec417ccc LP |
840 | #else |
841 | #error "Wut?" | |
842 | #endif | |
843 | } | |
844 | ||
845 | static inline unsigned u32ctz(uint32_t n) { | |
846 | #if __SIZEOF_INT__ == 4 | |
847 | return __builtin_ctz(n); | |
848 | #else | |
849 | #error "Wut?" | |
850 | #endif | |
144e51ec | 851 | } |
79d860fe | 852 | |
8fe90522 ZJS |
853 | static inline int log2i(int x) { |
854 | assert(x > 0); | |
855 | ||
856 | return __SIZEOF_INT__ * 8 - __builtin_clz(x) - 1; | |
857 | } | |
858 | ||
b5de6d98 MS |
859 | static inline unsigned log2u(unsigned x) { |
860 | assert(x > 0); | |
861 | ||
862 | return sizeof(unsigned) * 8 - __builtin_clz(x) - 1; | |
863 | } | |
864 | ||
865 | static inline unsigned log2u_round_up(unsigned x) { | |
866 | assert(x > 0); | |
867 | ||
868 | if (x == 1) | |
869 | return 0; | |
870 | ||
871 | return log2u(x - 1) + 1; | |
872 | } | |
873 | ||
79d860fe MP |
874 | static inline bool logind_running(void) { |
875 | return access("/run/systemd/seats/", F_OK) >= 0; | |
876 | } | |
4b73a0c0 | 877 | |
82da66fb LP |
878 | #define DECIMAL_STR_WIDTH(x) \ |
879 | ({ \ | |
880 | typeof(x) _x_ = (x); \ | |
881 | unsigned ans = 1; \ | |
882 | while (_x_ /= 10) \ | |
883 | ans++; \ | |
884 | ans; \ | |
885 | }) | |
75add28a | 886 | |
4b73a0c0 | 887 | int unlink_noerrno(const char *path); |
ed5c5dbd | 888 | |
82da66fb LP |
889 | #define alloca0(n) \ |
890 | ({ \ | |
891 | char *_new_; \ | |
892 | size_t _len_ = n; \ | |
893 | _new_ = alloca(_len_); \ | |
894 | (void *) memset(_new_, 0, _len_); \ | |
ed5c5dbd | 895 | }) |
95d78c7e | 896 | |
257224b0 | 897 | /* It's not clear what alignment glibc/gcc alloca() guarantee, hence provide a guaranteed safe version */ |
95d78c7e DH |
898 | #define alloca_align(size, align) \ |
899 | ({ \ | |
900 | void *_ptr_; \ | |
901 | size_t _mask_ = (align) - 1; \ | |
902 | _ptr_ = alloca((size) + _mask_); \ | |
903 | (void*)(((uintptr_t)_ptr_ + _mask_) & ~_mask_); \ | |
904 | }) | |
905 | ||
906 | #define alloca0_align(size, align) \ | |
907 | ({ \ | |
908 | void *_new_; \ | |
909 | size_t _size_ = (size); \ | |
910 | _new_ = alloca_align(_size_, (align)); \ | |
911 | (void*)memset(_new_, 0, _size_); \ | |
912 | }) | |
66060897 | 913 | |
8085f163 DR |
914 | #define strappenda(a, ...) \ |
915 | ({ \ | |
916 | int _len = strlen(a); \ | |
917 | unsigned _i; \ | |
918 | char *_d_, *_p_; \ | |
919 | const char *_appendees_[] = { __VA_ARGS__ }; \ | |
920 | for (_i = 0; _i < ELEMENTSOF(_appendees_); _i++) \ | |
921 | _len += strlen(_appendees_[_i]); \ | |
922 | _d_ = alloca(_len + 1); \ | |
923 | _p_ = stpcpy(_d_, a); \ | |
924 | for (_i = 0; _i < ELEMENTSOF(_appendees_); _i++) \ | |
925 | _p_ = stpcpy(_p_, _appendees_[_i]); \ | |
926 | _d_; \ | |
f39d4a08 HH |
927 | }) |
928 | ||
31885cd5 ZJS |
929 | #define procfs_file_alloca(pid, field) \ |
930 | ({ \ | |
931 | pid_t _pid_ = (pid); \ | |
b68fa010 SP |
932 | const char *_r_; \ |
933 | if (_pid_ == 0) { \ | |
934 | _r_ = ("/proc/self/" field); \ | |
935 | } else { \ | |
936 | _r_ = alloca(strlen("/proc/") + DECIMAL_STR_MAX(pid_t) + 1 + sizeof(field)); \ | |
937 | sprintf((char*) _r_, "/proc/"PID_FMT"/" field, _pid_); \ | |
938 | } \ | |
31885cd5 ZJS |
939 | _r_; \ |
940 | }) | |
d6dd604b LP |
941 | |
942 | struct _locale_struct_ { | |
943 | locale_t saved_locale; | |
944 | locale_t new_locale; | |
945 | bool quit; | |
946 | }; | |
947 | ||
948 | static inline void _reset_locale_(struct _locale_struct_ *s) { | |
949 | PROTECT_ERRNO; | |
950 | if (s->saved_locale != (locale_t) 0) | |
951 | uselocale(s->saved_locale); | |
952 | if (s->new_locale != (locale_t) 0) | |
953 | freelocale(s->new_locale); | |
954 | } | |
955 | ||
956 | #define RUN_WITH_LOCALE(mask, loc) \ | |
957 | for (_cleanup_(_reset_locale_) struct _locale_struct_ _saved_locale_ = { (locale_t) 0, (locale_t) 0, false }; \ | |
958 | ({ \ | |
959 | if (!_saved_locale_.quit) { \ | |
960 | PROTECT_ERRNO; \ | |
961 | _saved_locale_.new_locale = newlocale((mask), (loc), (locale_t) 0); \ | |
962 | if (_saved_locale_.new_locale != (locale_t) 0) \ | |
963 | _saved_locale_.saved_locale = uselocale(_saved_locale_.new_locale); \ | |
964 | } \ | |
965 | !_saved_locale_.quit; }) ; \ | |
966 | _saved_locale_.quit = true) | |
aa96c6cb | 967 | |
44a6b1b6 | 968 | bool id128_is_valid(const char *s) _pure_; |
d4ac85c6 LP |
969 | |
970 | int split_pair(const char *s, const char *sep, char **l, char **r); | |
7ff7394d | 971 | |
74df0fca | 972 | int shall_restore_state(void); |
295edddf | 973 | |
7ff7394d ZJS |
974 | /** |
975 | * Normal qsort requires base to be nonnull. Here were require | |
976 | * that only if nmemb > 0. | |
977 | */ | |
978 | static inline void qsort_safe(void *base, size_t nmemb, size_t size, | |
979 | int (*compar)(const void *, const void *)) { | |
980 | if (nmemb) { | |
981 | assert(base); | |
982 | qsort(base, nmemb, size, compar); | |
983 | } | |
984 | } | |
74df0fca LP |
985 | |
986 | int proc_cmdline(char **ret); | |
059cb385 | 987 | int parse_proc_cmdline(int (*parse_word)(const char *key, const char *value)); |
1a299299 | 988 | int get_proc_cmdline_key(const char *parameter, char **value); |
bc9fd78c LP |
989 | |
990 | int container_get_leader(const char *machine, pid_t *pid); | |
991 | ||
878cd7e9 LP |
992 | int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *netns_fd, int *root_fd); |
993 | int namespace_enter(int pidns_fd, int mntns_fd, int netns_fd, int root_fd); | |
bf108e55 | 994 | |
9f5650ae LP |
995 | bool pid_is_alive(pid_t pid); |
996 | bool pid_is_unwaited(pid_t pid); | |
eff05270 LP |
997 | |
998 | int getpeercred(int fd, struct ucred *ucred); | |
999 | int getpeersec(int fd, char **ret); | |
8e33886e | 1000 | |
65b3903f ZJS |
1001 | int writev_safe(int fd, const struct iovec *w, int j); |
1002 | ||
1003 | int mkostemp_safe(char *pattern, int flags); | |
8e33886e | 1004 | int open_tmpfile(const char *path, int flags); |
fdb9161c LP |
1005 | |
1006 | int fd_warn_permissions(const char *path, int fd); | |
6afc95b7 | 1007 | |
ac45f971 LP |
1008 | unsigned long personality_from_string(const char *p); |
1009 | const char *personality_to_string(unsigned long); | |
1c231f56 LP |
1010 | |
1011 | uint64_t physical_memory(void); | |
6db615c1 LP |
1012 | |
1013 | char* mount_test_option(const char *haystack, const char *needle); | |
29bfbcd6 LP |
1014 | |
1015 | void hexdump(FILE *f, const void *p, size_t s); | |
370c860f DR |
1016 | |
1017 | union file_handle_union { | |
c5220a94 MO |
1018 | struct file_handle handle; |
1019 | char padding[sizeof(struct file_handle) + MAX_HANDLE_SZ]; | |
370c860f | 1020 | }; |
c5220a94 MO |
1021 | |
1022 | int update_reboot_param_file(const char *param); | |
6d313367 LP |
1023 | |
1024 | int umount_recursive(const char *target, int flags); | |
d6797c92 LP |
1025 | |
1026 | int bind_remount_recursive(const char *prefix, bool ro); | |
1b992147 LP |
1027 | |
1028 | int fflush_and_check(FILE *f); | |
2e78fa79 | 1029 | |
ae6c3cc0 LP |
1030 | int tempfn_xxxxxx(const char *p, char **ret); |
1031 | int tempfn_random(const char *p, char **ret); | |
c4e34a61 | 1032 | int tempfn_random_child(const char *p, char **ret); |
fecc80c1 LP |
1033 | |
1034 | bool is_localhost(const char *hostname); | |
45035609 LP |
1035 | |
1036 | int take_password_lock(const char *root); | |
5261ba90 | 1037 | |
7629889c | 1038 | int is_symlink(const char *path); |
be57e297 | 1039 | int is_dir(const char *path, bool follow); |
7629889c | 1040 | |
f32d2db1 | 1041 | int unquote_first_word(const char **p, char **ret, bool relax); |
7629889c | 1042 | int unquote_many_words(const char **p, ...) _sentinel_; |
2928b0a8 LP |
1043 | |
1044 | int free_and_strdup(char **p, const char *s); | |
605f81a8 MS |
1045 | |
1046 | int sethostname_idempotent(const char *s); | |
f7c1ad4f LP |
1047 | |
1048 | #define INOTIFY_EVENT_MAX (sizeof(struct inotify_event) + NAME_MAX + 1) | |
1049 | ||
1050 | #define FOREACH_INOTIFY_EVENT(e, buffer, sz) \ | |
0254e944 SL |
1051 | for ((e) = &buffer.ev; \ |
1052 | (uint8_t*) (e) < (uint8_t*) (buffer.raw) + (sz); \ | |
f7c1ad4f | 1053 | (e) = (struct inotify_event*) ((uint8_t*) (e) + sizeof(struct inotify_event) + (e)->len)) |
72648326 | 1054 | |
0254e944 SL |
1055 | union inotify_event_buffer { |
1056 | struct inotify_event ev; | |
1057 | uint8_t raw[INOTIFY_EVENT_MAX]; | |
1058 | }; | |
1059 | ||
72648326 | 1060 | #define laccess(path, mode) faccessat(AT_FDCWD, (path), (mode), AT_SYMLINK_NOFOLLOW) |
ee451d76 LP |
1061 | |
1062 | int ptsname_malloc(int fd, char **ret); | |
5f8cc96a LP |
1063 | |
1064 | int openpt_in_namespace(pid_t pid, int flags); | |
4a4d89b6 | 1065 | |
10f9c755 LP |
1066 | ssize_t fgetxattrat_fake(int dirfd, const char *filename, const char *attribute, void *value, size_t size, int flags); |
1067 | ||
4a4d89b6 LP |
1068 | int fd_setcrtime(int fd, usec_t usec); |
1069 | int fd_getcrtime(int fd, usec_t *usec); | |
1070 | int path_getcrtime(const char *p, usec_t *usec); | |
10f9c755 | 1071 | int fd_getcrtime_at(int dirfd, const char *name, usec_t *usec, int flags); |