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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ | |
2 | ||
3 | #pragma once | |
4 | ||
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 | |
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 | |
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 | |
18 | Lesser General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU Lesser General Public License | |
21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
22 | ***/ | |
23 | ||
24 | #include <alloca.h> | |
25 | #include <fcntl.h> | |
26 | #include <inttypes.h> | |
27 | #include <time.h> | |
28 | #include <stdarg.h> | |
29 | #include <stdbool.h> | |
30 | #include <stdlib.h> | |
31 | #include <stdio.h> | |
32 | #include <signal.h> | |
33 | #include <sched.h> | |
34 | #include <limits.h> | |
35 | #include <sys/types.h> | |
36 | #include <sys/socket.h> | |
37 | #include <sys/stat.h> | |
38 | #include <dirent.h> | |
39 | #include <stddef.h> | |
40 | #include <unistd.h> | |
41 | #include <locale.h> | |
42 | #include <mntent.h> | |
43 | #include <sys/inotify.h> | |
44 | #include <sys/statfs.h> | |
45 | ||
46 | #if SIZEOF_PID_T == 4 | |
47 | # define PID_PRI PRIi32 | |
48 | #elif SIZEOF_PID_T == 2 | |
49 | # define PID_PRI PRIi16 | |
50 | #else | |
51 | # error Unknown pid_t size | |
52 | #endif | |
53 | #define PID_FMT "%" PID_PRI | |
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 | ||
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 | ||
71 | #if SIZEOF_TIME_T == 8 | |
72 | # define PRI_TIME PRIi64 | |
73 | #elif SIZEOF_TIME_T == 4 | |
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 | ||
87 | #include "macro.h" | |
88 | #include "missing.h" | |
89 | #include "time-util.h" | |
90 | ||
91 | /* What is interpreted as whitespace? */ | |
92 | #define WHITESPACE " \t\n\r" | |
93 | #define NEWLINE "\n\r" | |
94 | #define QUOTES "\"\'" | |
95 | #define COMMENTS "#;" | |
96 | #define GLOB_CHARS "*?[" | |
97 | ||
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 | ||
104 | #define FORMAT_BYTES_MAX 8 | |
105 | ||
106 | #define ANSI_HIGHLIGHT_ON "\x1B[1;39m" | |
107 | #define ANSI_RED_ON "\x1B[31m" | |
108 | #define ANSI_HIGHLIGHT_RED_ON "\x1B[1;31m" | |
109 | #define ANSI_GREEN_ON "\x1B[32m" | |
110 | #define ANSI_HIGHLIGHT_GREEN_ON "\x1B[1;32m" | |
111 | #define ANSI_HIGHLIGHT_YELLOW_ON "\x1B[1;33m" | |
112 | #define ANSI_HIGHLIGHT_BLUE_ON "\x1B[1;34m" | |
113 | #define ANSI_HIGHLIGHT_OFF "\x1B[0m" | |
114 | #define ANSI_ERASE_TO_END_OF_LINE "\x1B[K" | |
115 | ||
116 | size_t page_size(void) _pure_; | |
117 | #define PAGE_ALIGN(l) ALIGN_TO((l), page_size()) | |
118 | ||
119 | #define streq(a,b) (strcmp((a),(b)) == 0) | |
120 | #define strneq(a, b, n) (strncmp((a), (b), (n)) == 0) | |
121 | #define strcaseeq(a,b) (strcasecmp((a),(b)) == 0) | |
122 | #define strncaseeq(a, b, n) (strncasecmp((a), (b), (n)) == 0) | |
123 | ||
124 | bool streq_ptr(const char *a, const char *b) _pure_; | |
125 | ||
126 | #define new(t, n) ((t*) malloc_multiply(sizeof(t), (n))) | |
127 | ||
128 | #define new0(t, n) ((t*) calloc((n), sizeof(t))) | |
129 | ||
130 | #define newa(t, n) ((t*) alloca(sizeof(t)*(n))) | |
131 | ||
132 | #define newa0(t, n) ((t*) alloca0(sizeof(t)*(n))) | |
133 | ||
134 | #define newdup(t, p, n) ((t*) memdup_multiply(p, sizeof(t), (n))) | |
135 | ||
136 | #define malloc0(n) (calloc((n), 1)) | |
137 | ||
138 | static inline const char* yes_no(bool b) { | |
139 | return b ? "yes" : "no"; | |
140 | } | |
141 | ||
142 | static inline const char* true_false(bool b) { | |
143 | return b ? "true" : "false"; | |
144 | } | |
145 | ||
146 | static inline const char* one_zero(bool b) { | |
147 | return b ? "1" : "0"; | |
148 | } | |
149 | ||
150 | static inline const char* strempty(const char *s) { | |
151 | return s ? s : ""; | |
152 | } | |
153 | ||
154 | static inline const char* strnull(const char *s) { | |
155 | return s ? s : "(null)"; | |
156 | } | |
157 | ||
158 | static inline const char *strna(const char *s) { | |
159 | return s ? s : "n/a"; | |
160 | } | |
161 | ||
162 | static inline bool isempty(const char *p) { | |
163 | return !p || !p[0]; | |
164 | } | |
165 | ||
166 | static inline char *startswith(const char *s, const char *prefix) { | |
167 | size_t l; | |
168 | ||
169 | l = strlen(prefix); | |
170 | if (strncmp(s, prefix, l) == 0) | |
171 | return (char*) s + l; | |
172 | ||
173 | return NULL; | |
174 | } | |
175 | ||
176 | static inline char *startswith_no_case(const char *s, const char *prefix) { | |
177 | size_t l; | |
178 | ||
179 | l = strlen(prefix); | |
180 | if (strncasecmp(s, prefix, l) == 0) | |
181 | return (char*) s + l; | |
182 | ||
183 | return NULL; | |
184 | } | |
185 | ||
186 | char *endswith(const char *s, const char *postfix) _pure_; | |
187 | ||
188 | char *first_word(const char *s, const char *word) _pure_; | |
189 | ||
190 | int close_nointr(int fd); | |
191 | int safe_close(int fd); | |
192 | void safe_close_pair(int p[]); | |
193 | ||
194 | void close_many(const int fds[], unsigned n_fd); | |
195 | ||
196 | int parse_size(const char *t, off_t base, off_t *size); | |
197 | ||
198 | int parse_boolean(const char *v) _pure_; | |
199 | int parse_pid(const char *s, pid_t* ret_pid); | |
200 | int parse_uid(const char *s, uid_t* ret_uid); | |
201 | #define parse_gid(s, ret_uid) parse_uid(s, ret_uid) | |
202 | ||
203 | int safe_atou(const char *s, unsigned *ret_u); | |
204 | int safe_atoi(const char *s, int *ret_i); | |
205 | ||
206 | int safe_atollu(const char *s, unsigned long long *ret_u); | |
207 | int safe_atolli(const char *s, long long int *ret_i); | |
208 | ||
209 | int safe_atod(const char *s, double *ret_d); | |
210 | ||
211 | int safe_atou8(const char *s, uint8_t *ret); | |
212 | ||
213 | #if LONG_MAX == INT_MAX | |
214 | static inline int safe_atolu(const char *s, unsigned long *ret_u) { | |
215 | assert_cc(sizeof(unsigned long) == sizeof(unsigned)); | |
216 | return safe_atou(s, (unsigned*) ret_u); | |
217 | } | |
218 | static inline int safe_atoli(const char *s, long int *ret_u) { | |
219 | assert_cc(sizeof(long int) == sizeof(int)); | |
220 | return safe_atoi(s, (int*) ret_u); | |
221 | } | |
222 | #else | |
223 | static inline int safe_atolu(const char *s, unsigned long *ret_u) { | |
224 | assert_cc(sizeof(unsigned long) == sizeof(unsigned long long)); | |
225 | return safe_atollu(s, (unsigned long long*) ret_u); | |
226 | } | |
227 | static inline int safe_atoli(const char *s, long int *ret_u) { | |
228 | assert_cc(sizeof(long int) == sizeof(long long int)); | |
229 | return safe_atolli(s, (long long int*) ret_u); | |
230 | } | |
231 | #endif | |
232 | ||
233 | static inline int safe_atou32(const char *s, uint32_t *ret_u) { | |
234 | assert_cc(sizeof(uint32_t) == sizeof(unsigned)); | |
235 | return safe_atou(s, (unsigned*) ret_u); | |
236 | } | |
237 | ||
238 | static inline int safe_atoi32(const char *s, int32_t *ret_i) { | |
239 | assert_cc(sizeof(int32_t) == sizeof(int)); | |
240 | return safe_atoi(s, (int*) ret_i); | |
241 | } | |
242 | ||
243 | static inline int safe_atou64(const char *s, uint64_t *ret_u) { | |
244 | assert_cc(sizeof(uint64_t) == sizeof(unsigned long long)); | |
245 | return safe_atollu(s, (unsigned long long*) ret_u); | |
246 | } | |
247 | ||
248 | static inline int safe_atoi64(const char *s, int64_t *ret_i) { | |
249 | assert_cc(sizeof(int64_t) == sizeof(long long int)); | |
250 | return safe_atolli(s, (long long int*) ret_i); | |
251 | } | |
252 | ||
253 | int safe_atou16(const char *s, uint16_t *ret); | |
254 | int safe_atoi16(const char *s, int16_t *ret); | |
255 | ||
256 | const char* split(const char **state, size_t *l, const char *separator, bool quoted); | |
257 | ||
258 | #define FOREACH_WORD(word, length, s, state) \ | |
259 | _FOREACH_WORD(word, length, s, WHITESPACE, false, state) | |
260 | ||
261 | #define FOREACH_WORD_SEPARATOR(word, length, s, separator, state) \ | |
262 | _FOREACH_WORD(word, length, s, separator, false, state) | |
263 | ||
264 | #define FOREACH_WORD_QUOTED(word, length, s, state) \ | |
265 | _FOREACH_WORD(word, length, s, WHITESPACE, true, state) | |
266 | ||
267 | #define _FOREACH_WORD(word, length, s, separator, quoted, state) \ | |
268 | for ((state) = (s), (word) = split(&(state), &(length), (separator), (quoted)); (word); (word) = split(&(state), &(length), (separator), (quoted))) | |
269 | ||
270 | pid_t get_parent_of_pid(pid_t pid, pid_t *ppid); | |
271 | ||
272 | char *strappend(const char *s, const char *suffix); | |
273 | char *strnappend(const char *s, const char *suffix, size_t length); | |
274 | ||
275 | char *replace_env(const char *format, char **env); | |
276 | char **replace_env_argv(char **argv, char **env); | |
277 | ||
278 | int readlinkat_malloc(int fd, const char *p, char **ret); | |
279 | int readlink_malloc(const char *p, char **r); | |
280 | int readlink_value(const char *p, char **ret); | |
281 | int readlink_and_make_absolute(const char *p, char **r); | |
282 | int readlink_and_canonicalize(const char *p, char **r); | |
283 | ||
284 | int reset_all_signal_handlers(void); | |
285 | int reset_signal_mask(void); | |
286 | ||
287 | char *strstrip(char *s); | |
288 | char *delete_chars(char *s, const char *bad); | |
289 | char *truncate_nl(char *s); | |
290 | ||
291 | char *file_in_same_dir(const char *path, const char *filename); | |
292 | ||
293 | int rmdir_parents(const char *path, const char *stop); | |
294 | ||
295 | int get_process_state(pid_t pid); | |
296 | int get_process_comm(pid_t pid, char **name); | |
297 | int get_process_cmdline(pid_t pid, size_t max_length, bool comm_fallback, char **line); | |
298 | int get_process_exe(pid_t pid, char **name); | |
299 | int get_process_uid(pid_t pid, uid_t *uid); | |
300 | int get_process_gid(pid_t pid, gid_t *gid); | |
301 | int get_process_capeff(pid_t pid, char **capeff); | |
302 | int get_process_cwd(pid_t pid, char **cwd); | |
303 | int get_process_root(pid_t pid, char **root); | |
304 | int get_process_environ(pid_t pid, char **environ); | |
305 | ||
306 | char hexchar(int x) _const_; | |
307 | int unhexchar(char c) _const_; | |
308 | char octchar(int x) _const_; | |
309 | int unoctchar(char c) _const_; | |
310 | char decchar(int x) _const_; | |
311 | int undecchar(char c) _const_; | |
312 | ||
313 | char *cescape(const char *s); | |
314 | ||
315 | typedef enum UnescapeFlags { | |
316 | UNESCAPE_RELAX = 1, | |
317 | } UnescapeFlags; | |
318 | ||
319 | int cunescape(const char *s, UnescapeFlags flags, char **ret); | |
320 | int cunescape_length(const char *s, size_t length, UnescapeFlags flags, char **ret); | |
321 | int cunescape_length_with_prefix(const char *s, size_t length, const char *prefix, UnescapeFlags flags, char **ret); | |
322 | ||
323 | char *xescape(const char *s, const char *bad); | |
324 | ||
325 | char *ascii_strlower(char *path); | |
326 | ||
327 | bool dirent_is_file(const struct dirent *de) _pure_; | |
328 | bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix) _pure_; | |
329 | ||
330 | bool hidden_file(const char *filename) _pure_; | |
331 | ||
332 | bool chars_intersect(const char *a, const char *b) _pure_; | |
333 | ||
334 | int make_stdio(int fd); | |
335 | int make_null_stdio(void); | |
336 | int make_console_stdio(void); | |
337 | ||
338 | int dev_urandom(void *p, size_t n); | |
339 | void random_bytes(void *p, size_t n); | |
340 | void initialize_srand(void); | |
341 | ||
342 | static inline uint64_t random_u64(void) { | |
343 | uint64_t u; | |
344 | random_bytes(&u, sizeof(u)); | |
345 | return u; | |
346 | } | |
347 | ||
348 | static inline uint32_t random_u32(void) { | |
349 | uint32_t u; | |
350 | random_bytes(&u, sizeof(u)); | |
351 | return u; | |
352 | } | |
353 | ||
354 | /* For basic lookup tables with strictly enumerated entries */ | |
355 | #define _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,scope) \ | |
356 | scope const char *name##_to_string(type i) { \ | |
357 | if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \ | |
358 | return NULL; \ | |
359 | return name##_table[i]; \ | |
360 | } | |
361 | ||
362 | ssize_t string_table_lookup(const char * const *table, size_t len, const char *key); | |
363 | ||
364 | #define _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,scope) \ | |
365 | scope inline type name##_from_string(const char *s) { \ | |
366 | return (type)string_table_lookup(name##_table, ELEMENTSOF(name##_table), s); \ | |
367 | } | |
368 | ||
369 | #define _DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \ | |
370 | _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,scope) \ | |
371 | _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,scope) \ | |
372 | struct __useless_struct_to_allow_trailing_semicolon__ | |
373 | ||
374 | #define DEFINE_STRING_TABLE_LOOKUP(name,type) _DEFINE_STRING_TABLE_LOOKUP(name,type,) | |
375 | #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP(name,type) _DEFINE_STRING_TABLE_LOOKUP(name,type,static) | |
376 | #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(name,type) _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,static) | |
377 | #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(name,type) _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,static) | |
378 | ||
379 | /* For string conversions where numbers are also acceptable */ | |
380 | #define DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(name,type,max) \ | |
381 | int name##_to_string_alloc(type i, char **str) { \ | |
382 | char *s; \ | |
383 | int r; \ | |
384 | if (i < 0 || i > max) \ | |
385 | return -ERANGE; \ | |
386 | if (i < (type) ELEMENTSOF(name##_table)) { \ | |
387 | s = strdup(name##_table[i]); \ | |
388 | if (!s) \ | |
389 | return log_oom(); \ | |
390 | } else { \ | |
391 | r = asprintf(&s, "%i", i); \ | |
392 | if (r < 0) \ | |
393 | return log_oom(); \ | |
394 | } \ | |
395 | *str = s; \ | |
396 | return 0; \ | |
397 | } \ | |
398 | type name##_from_string(const char *s) { \ | |
399 | type i; \ | |
400 | unsigned u = 0; \ | |
401 | assert(s); \ | |
402 | for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \ | |
403 | if (name##_table[i] && \ | |
404 | streq(name##_table[i], s)) \ | |
405 | return i; \ | |
406 | if (safe_atou(s, &u) >= 0 && u <= max) \ | |
407 | return (type) u; \ | |
408 | return (type) -1; \ | |
409 | } \ | |
410 | struct __useless_struct_to_allow_trailing_semicolon__ | |
411 | ||
412 | int fd_nonblock(int fd, bool nonblock); | |
413 | int fd_cloexec(int fd, bool cloexec); | |
414 | ||
415 | int close_all_fds(const int except[], unsigned n_except); | |
416 | ||
417 | bool fstype_is_network(const char *fstype); | |
418 | ||
419 | int chvt(int vt); | |
420 | ||
421 | int read_one_char(FILE *f, char *ret, usec_t timeout, bool *need_nl); | |
422 | int ask_char(char *ret, const char *replies, const char *text, ...) _printf_(3, 4); | |
423 | int ask_string(char **ret, const char *text, ...) _printf_(2, 3); | |
424 | ||
425 | int reset_terminal_fd(int fd, bool switch_to_text); | |
426 | int reset_terminal(const char *name); | |
427 | ||
428 | int open_terminal(const char *name, int mode); | |
429 | int acquire_terminal(const char *name, bool fail, bool force, bool ignore_tiocstty_eperm, usec_t timeout); | |
430 | int release_terminal(void); | |
431 | ||
432 | int flush_fd(int fd); | |
433 | ||
434 | int ignore_signals(int sig, ...); | |
435 | int default_signals(int sig, ...); | |
436 | int sigaction_many(const struct sigaction *sa, ...); | |
437 | ||
438 | int fopen_temporary(const char *path, FILE **_f, char **_temp_path); | |
439 | ||
440 | ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll); | |
441 | int loop_read_exact(int fd, void *buf, size_t nbytes, bool do_poll); | |
442 | int loop_write(int fd, const void *buf, size_t nbytes, bool do_poll); | |
443 | ||
444 | bool is_device_path(const char *path); | |
445 | ||
446 | int dir_is_empty(const char *path); | |
447 | char* dirname_malloc(const char *path); | |
448 | ||
449 | void rename_process(const char name[8]); | |
450 | ||
451 | void sigset_add_many(sigset_t *ss, ...); | |
452 | int sigprocmask_many(int how, ...); | |
453 | ||
454 | bool hostname_is_set(void); | |
455 | ||
456 | char* lookup_uid(uid_t uid); | |
457 | char* gethostname_malloc(void); | |
458 | char* getlogname_malloc(void); | |
459 | char* getusername_malloc(void); | |
460 | ||
461 | int getttyname_malloc(int fd, char **r); | |
462 | int getttyname_harder(int fd, char **r); | |
463 | ||
464 | int get_ctty_devnr(pid_t pid, dev_t *d); | |
465 | int get_ctty(pid_t, dev_t *_devnr, char **r); | |
466 | ||
467 | int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid); | |
468 | int fchmod_and_fchown(int fd, mode_t mode, uid_t uid, gid_t gid); | |
469 | ||
470 | bool is_temporary_fs(const struct statfs *s) _pure_; | |
471 | int fd_is_temporary_fs(int fd); | |
472 | ||
473 | int pipe_eof(int fd); | |
474 | ||
475 | cpu_set_t* cpu_set_malloc(unsigned *ncpus); | |
476 | ||
477 | int status_vprintf(const char *status, bool ellipse, bool ephemeral, const char *format, va_list ap) _printf_(4,0); | |
478 | int status_printf(const char *status, bool ellipse, bool ephemeral, const char *format, ...) _printf_(4,5); | |
479 | ||
480 | #define xsprintf(buf, fmt, ...) assert_se((size_t) snprintf(buf, ELEMENTSOF(buf), fmt, __VA_ARGS__) < ELEMENTSOF(buf)) | |
481 | ||
482 | int fd_columns(int fd); | |
483 | unsigned columns(void); | |
484 | int fd_lines(int fd); | |
485 | unsigned lines(void); | |
486 | void columns_lines_cache_reset(int _unused_ signum); | |
487 | ||
488 | bool on_tty(void); | |
489 | ||
490 | static inline const char *ansi_highlight(void) { | |
491 | return on_tty() ? ANSI_HIGHLIGHT_ON : ""; | |
492 | } | |
493 | ||
494 | static inline const char *ansi_highlight_red(void) { | |
495 | return on_tty() ? ANSI_HIGHLIGHT_RED_ON : ""; | |
496 | } | |
497 | ||
498 | static inline const char *ansi_highlight_green(void) { | |
499 | return on_tty() ? ANSI_HIGHLIGHT_GREEN_ON : ""; | |
500 | } | |
501 | ||
502 | static inline const char *ansi_highlight_yellow(void) { | |
503 | return on_tty() ? ANSI_HIGHLIGHT_YELLOW_ON : ""; | |
504 | } | |
505 | ||
506 | static inline const char *ansi_highlight_blue(void) { | |
507 | return on_tty() ? ANSI_HIGHLIGHT_BLUE_ON : ""; | |
508 | } | |
509 | ||
510 | static inline const char *ansi_highlight_off(void) { | |
511 | return on_tty() ? ANSI_HIGHLIGHT_OFF : ""; | |
512 | } | |
513 | ||
514 | int files_same(const char *filea, const char *fileb); | |
515 | ||
516 | int running_in_chroot(void); | |
517 | ||
518 | char *ellipsize(const char *s, size_t length, unsigned percent); | |
519 | /* bytes columns */ | |
520 | char *ellipsize_mem(const char *s, size_t old_length, size_t new_length, unsigned percent); | |
521 | ||
522 | int touch_file(const char *path, bool parents, usec_t stamp, uid_t uid, gid_t gid, mode_t mode); | |
523 | int touch(const char *path); | |
524 | ||
525 | char *unquote(const char *s, const char *quotes); | |
526 | char *normalize_env_assignment(const char *s); | |
527 | ||
528 | int wait_for_terminate(pid_t pid, siginfo_t *status); | |
529 | int wait_for_terminate_and_warn(const char *name, pid_t pid, bool check_exit_code); | |
530 | ||
531 | noreturn void freeze(void); | |
532 | ||
533 | bool null_or_empty(struct stat *st) _pure_; | |
534 | int null_or_empty_path(const char *fn); | |
535 | int null_or_empty_fd(int fd); | |
536 | ||
537 | DIR *xopendirat(int dirfd, const char *name, int flags); | |
538 | ||
539 | char *fstab_node_to_udev_node(const char *p); | |
540 | ||
541 | char *resolve_dev_console(char **active); | |
542 | bool tty_is_vc(const char *tty); | |
543 | bool tty_is_vc_resolve(const char *tty); | |
544 | bool tty_is_console(const char *tty) _pure_; | |
545 | int vtnr_from_tty(const char *tty); | |
546 | const char *default_term_for_tty(const char *tty); | |
547 | ||
548 | void execute_directories(const char* const* directories, usec_t timeout, char *argv[]); | |
549 | ||
550 | int kill_and_sigcont(pid_t pid, int sig); | |
551 | ||
552 | bool nulstr_contains(const char*nulstr, const char *needle); | |
553 | ||
554 | bool plymouth_running(void); | |
555 | ||
556 | bool hostname_is_valid(const char *s) _pure_; | |
557 | char* hostname_cleanup(char *s, bool lowercase); | |
558 | ||
559 | bool machine_name_is_valid(const char *s) _pure_; | |
560 | ||
561 | char* strshorten(char *s, size_t l); | |
562 | ||
563 | int terminal_vhangup_fd(int fd); | |
564 | int terminal_vhangup(const char *name); | |
565 | ||
566 | int vt_disallocate(const char *name); | |
567 | ||
568 | int symlink_atomic(const char *from, const char *to); | |
569 | int mknod_atomic(const char *path, mode_t mode, dev_t dev); | |
570 | int mkfifo_atomic(const char *path, mode_t mode); | |
571 | ||
572 | int fchmod_umask(int fd, mode_t mode); | |
573 | ||
574 | bool display_is_local(const char *display) _pure_; | |
575 | int socket_from_display(const char *display, char **path); | |
576 | ||
577 | int get_user_creds(const char **username, uid_t *uid, gid_t *gid, const char **home, const char **shell); | |
578 | int get_group_creds(const char **groupname, gid_t *gid); | |
579 | ||
580 | int in_gid(gid_t gid); | |
581 | int in_group(const char *name); | |
582 | ||
583 | char* uid_to_name(uid_t uid); | |
584 | char* gid_to_name(gid_t gid); | |
585 | ||
586 | int glob_exists(const char *path); | |
587 | int glob_extend(char ***strv, const char *path); | |
588 | ||
589 | int dirent_ensure_type(DIR *d, struct dirent *de); | |
590 | ||
591 | int get_files_in_directory(const char *path, char ***list); | |
592 | ||
593 | char *strjoin(const char *x, ...) _sentinel_; | |
594 | ||
595 | bool is_main_thread(void); | |
596 | ||
597 | static inline bool _pure_ in_charset(const char *s, const char* charset) { | |
598 | assert(s); | |
599 | assert(charset); | |
600 | return s[strspn(s, charset)] == '\0'; | |
601 | } | |
602 | ||
603 | int block_get_whole_disk(dev_t d, dev_t *ret); | |
604 | ||
605 | #define NULSTR_FOREACH(i, l) \ | |
606 | for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1) | |
607 | ||
608 | #define NULSTR_FOREACH_PAIR(i, j, l) \ | |
609 | for ((i) = (l), (j) = strchr((i), 0)+1; (i) && *(i); (i) = strchr((j), 0)+1, (j) = *(i) ? strchr((i), 0)+1 : (i)) | |
610 | ||
611 | int ioprio_class_to_string_alloc(int i, char **s); | |
612 | int ioprio_class_from_string(const char *s); | |
613 | ||
614 | const char *sigchld_code_to_string(int i) _const_; | |
615 | int sigchld_code_from_string(const char *s) _pure_; | |
616 | ||
617 | int log_facility_unshifted_to_string_alloc(int i, char **s); | |
618 | int log_facility_unshifted_from_string(const char *s); | |
619 | ||
620 | int log_level_to_string_alloc(int i, char **s); | |
621 | int log_level_from_string(const char *s); | |
622 | ||
623 | int sched_policy_to_string_alloc(int i, char **s); | |
624 | int sched_policy_from_string(const char *s); | |
625 | ||
626 | const char *rlimit_to_string(int i) _const_; | |
627 | int rlimit_from_string(const char *s) _pure_; | |
628 | ||
629 | int ip_tos_to_string_alloc(int i, char **s); | |
630 | int ip_tos_from_string(const char *s); | |
631 | ||
632 | const char *signal_to_string(int i) _const_; | |
633 | int signal_from_string(const char *s) _pure_; | |
634 | ||
635 | int signal_from_string_try_harder(const char *s); | |
636 | ||
637 | extern int saved_argc; | |
638 | extern char **saved_argv; | |
639 | ||
640 | bool kexec_loaded(void); | |
641 | ||
642 | int prot_from_flags(int flags) _const_; | |
643 | ||
644 | char *format_bytes(char *buf, size_t l, off_t t); | |
645 | ||
646 | int fd_wait_for_event(int fd, int event, usec_t timeout); | |
647 | ||
648 | void* memdup(const void *p, size_t l) _alloc_(2); | |
649 | ||
650 | int is_kernel_thread(pid_t pid); | |
651 | ||
652 | int fd_inc_sndbuf(int fd, size_t n); | |
653 | int fd_inc_rcvbuf(int fd, size_t n); | |
654 | ||
655 | int fork_agent(pid_t *pid, const int except[], unsigned n_except, const char *path, ...); | |
656 | ||
657 | int setrlimit_closest(int resource, const struct rlimit *rlim); | |
658 | ||
659 | int getenv_for_pid(pid_t pid, const char *field, char **_value); | |
660 | ||
661 | bool http_url_is_valid(const char *url) _pure_; | |
662 | bool documentation_url_is_valid(const char *url) _pure_; | |
663 | ||
664 | bool http_etag_is_valid(const char *etag); | |
665 | ||
666 | bool in_initrd(void); | |
667 | ||
668 | void warn_melody(void); | |
669 | ||
670 | int get_home_dir(char **ret); | |
671 | int get_shell(char **_ret); | |
672 | ||
673 | static inline void freep(void *p) { | |
674 | free(*(void**) p); | |
675 | } | |
676 | ||
677 | static inline void closep(int *fd) { | |
678 | safe_close(*fd); | |
679 | } | |
680 | ||
681 | static inline void umaskp(mode_t *u) { | |
682 | umask(*u); | |
683 | } | |
684 | ||
685 | static inline void close_pairp(int (*p)[2]) { | |
686 | safe_close_pair(*p); | |
687 | } | |
688 | ||
689 | DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, fclose); | |
690 | DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, pclose); | |
691 | DEFINE_TRIVIAL_CLEANUP_FUNC(DIR*, closedir); | |
692 | DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, endmntent); | |
693 | ||
694 | #define _cleanup_free_ _cleanup_(freep) | |
695 | #define _cleanup_close_ _cleanup_(closep) | |
696 | #define _cleanup_umask_ _cleanup_(umaskp) | |
697 | #define _cleanup_globfree_ _cleanup_(globfree) | |
698 | #define _cleanup_fclose_ _cleanup_(fclosep) | |
699 | #define _cleanup_pclose_ _cleanup_(pclosep) | |
700 | #define _cleanup_closedir_ _cleanup_(closedirp) | |
701 | #define _cleanup_endmntent_ _cleanup_(endmntentp) | |
702 | #define _cleanup_close_pair_ _cleanup_(close_pairp) | |
703 | ||
704 | _malloc_ _alloc_(1, 2) static inline void *malloc_multiply(size_t a, size_t b) { | |
705 | if (_unlikely_(b != 0 && a > ((size_t) -1) / b)) | |
706 | return NULL; | |
707 | ||
708 | return malloc(a * b); | |
709 | } | |
710 | ||
711 | _alloc_(2, 3) static inline void *realloc_multiply(void *p, size_t a, size_t b) { | |
712 | if (_unlikely_(b != 0 && a > ((size_t) -1) / b)) | |
713 | return NULL; | |
714 | ||
715 | return realloc(p, a * b); | |
716 | } | |
717 | ||
718 | _alloc_(2, 3) static inline void *memdup_multiply(const void *p, size_t a, size_t b) { | |
719 | if (_unlikely_(b != 0 && a > ((size_t) -1) / b)) | |
720 | return NULL; | |
721 | ||
722 | return memdup(p, a * b); | |
723 | } | |
724 | ||
725 | bool filename_is_valid(const char *p) _pure_; | |
726 | bool path_is_safe(const char *p) _pure_; | |
727 | bool string_is_safe(const char *p) _pure_; | |
728 | bool string_has_cc(const char *p, const char *ok) _pure_; | |
729 | ||
730 | /** | |
731 | * Check if a string contains any glob patterns. | |
732 | */ | |
733 | _pure_ static inline bool string_is_glob(const char *p) { | |
734 | return !!strpbrk(p, GLOB_CHARS); | |
735 | } | |
736 | ||
737 | void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size, | |
738 | int (*compar) (const void *, const void *, void *), | |
739 | void *arg); | |
740 | ||
741 | #define _(String) gettext (String) | |
742 | void init_gettext(void); | |
743 | bool is_locale_utf8(void); | |
744 | ||
745 | typedef enum DrawSpecialChar { | |
746 | DRAW_TREE_VERTICAL, | |
747 | DRAW_TREE_BRANCH, | |
748 | DRAW_TREE_RIGHT, | |
749 | DRAW_TREE_SPACE, | |
750 | DRAW_TRIANGULAR_BULLET, | |
751 | DRAW_BLACK_CIRCLE, | |
752 | DRAW_ARROW, | |
753 | DRAW_DASH, | |
754 | _DRAW_SPECIAL_CHAR_MAX | |
755 | } DrawSpecialChar; | |
756 | ||
757 | const char *draw_special_char(DrawSpecialChar ch); | |
758 | ||
759 | char *strreplace(const char *text, const char *old_string, const char *new_string); | |
760 | ||
761 | char *strip_tab_ansi(char **p, size_t *l); | |
762 | ||
763 | int on_ac_power(void); | |
764 | ||
765 | int search_and_fopen(const char *path, const char *mode, const char *root, const char **search, FILE **_f); | |
766 | int search_and_fopen_nulstr(const char *path, const char *mode, const char *root, const char *search, FILE **_f); | |
767 | ||
768 | #define FOREACH_LINE(line, f, on_error) \ | |
769 | for (;;) \ | |
770 | if (!fgets(line, sizeof(line), f)) { \ | |
771 | if (ferror(f)) { \ | |
772 | on_error; \ | |
773 | } \ | |
774 | break; \ | |
775 | } else | |
776 | ||
777 | #define FOREACH_DIRENT(de, d, on_error) \ | |
778 | for (errno = 0, de = readdir(d);; errno = 0, de = readdir(d)) \ | |
779 | if (!de) { \ | |
780 | if (errno > 0) { \ | |
781 | on_error; \ | |
782 | } \ | |
783 | break; \ | |
784 | } else if (hidden_file((de)->d_name)) \ | |
785 | continue; \ | |
786 | else | |
787 | ||
788 | #define FOREACH_DIRENT_ALL(de, d, on_error) \ | |
789 | for (errno = 0, de = readdir(d);; errno = 0, de = readdir(d)) \ | |
790 | if (!de) { \ | |
791 | if (errno > 0) { \ | |
792 | on_error; \ | |
793 | } \ | |
794 | break; \ | |
795 | } else | |
796 | ||
797 | static inline void *mempset(void *s, int c, size_t n) { | |
798 | memset(s, c, n); | |
799 | return (uint8_t*)s + n; | |
800 | } | |
801 | ||
802 | char *hexmem(const void *p, size_t l); | |
803 | void *unhexmem(const char *p, size_t l); | |
804 | ||
805 | char *strextend(char **x, ...) _sentinel_; | |
806 | char *strrep(const char *s, unsigned n); | |
807 | ||
808 | void* greedy_realloc(void **p, size_t *allocated, size_t need, size_t size); | |
809 | void* greedy_realloc0(void **p, size_t *allocated, size_t need, size_t size); | |
810 | #define GREEDY_REALLOC(array, allocated, need) \ | |
811 | greedy_realloc((void**) &(array), &(allocated), (need), sizeof((array)[0])) | |
812 | ||
813 | #define GREEDY_REALLOC0(array, allocated, need) \ | |
814 | greedy_realloc0((void**) &(array), &(allocated), (need), sizeof((array)[0])) | |
815 | ||
816 | static inline void _reset_errno_(int *saved_errno) { | |
817 | errno = *saved_errno; | |
818 | } | |
819 | ||
820 | #define PROTECT_ERRNO _cleanup_(_reset_errno_) __attribute__((unused)) int _saved_errno_ = errno | |
821 | ||
822 | static inline int negative_errno(void) { | |
823 | /* This helper should be used to shut up gcc if you know 'errno' is | |
824 | * negative. Instead of "return -errno;", use "return negative_errno();" | |
825 | * It will suppress bogus gcc warnings in case it assumes 'errno' might | |
826 | * be 0 and thus the caller's error-handling might not be triggered. */ | |
827 | assert_return(errno > 0, -EINVAL); | |
828 | return -errno; | |
829 | } | |
830 | ||
831 | struct _umask_struct_ { | |
832 | mode_t mask; | |
833 | bool quit; | |
834 | }; | |
835 | ||
836 | static inline void _reset_umask_(struct _umask_struct_ *s) { | |
837 | umask(s->mask); | |
838 | }; | |
839 | ||
840 | #define RUN_WITH_UMASK(mask) \ | |
841 | for (_cleanup_(_reset_umask_) struct _umask_struct_ _saved_umask_ = { umask(mask), false }; \ | |
842 | !_saved_umask_.quit ; \ | |
843 | _saved_umask_.quit = true) | |
844 | ||
845 | static inline unsigned u64log2(uint64_t n) { | |
846 | #if __SIZEOF_LONG_LONG__ == 8 | |
847 | return (n > 1) ? (unsigned) __builtin_clzll(n) ^ 63U : 0; | |
848 | #else | |
849 | #error "Wut?" | |
850 | #endif | |
851 | } | |
852 | ||
853 | static inline unsigned u32ctz(uint32_t n) { | |
854 | #if __SIZEOF_INT__ == 4 | |
855 | return __builtin_ctz(n); | |
856 | #else | |
857 | #error "Wut?" | |
858 | #endif | |
859 | } | |
860 | ||
861 | static inline unsigned log2i(int x) { | |
862 | assert(x > 0); | |
863 | ||
864 | return __SIZEOF_INT__ * 8 - __builtin_clz(x) - 1; | |
865 | } | |
866 | ||
867 | static inline unsigned log2u(unsigned x) { | |
868 | assert(x > 0); | |
869 | ||
870 | return sizeof(unsigned) * 8 - __builtin_clz(x) - 1; | |
871 | } | |
872 | ||
873 | static inline unsigned log2u_round_up(unsigned x) { | |
874 | assert(x > 0); | |
875 | ||
876 | if (x == 1) | |
877 | return 0; | |
878 | ||
879 | return log2u(x - 1) + 1; | |
880 | } | |
881 | ||
882 | static inline bool logind_running(void) { | |
883 | return access("/run/systemd/seats/", F_OK) >= 0; | |
884 | } | |
885 | ||
886 | #define DECIMAL_STR_WIDTH(x) \ | |
887 | ({ \ | |
888 | typeof(x) _x_ = (x); \ | |
889 | unsigned ans = 1; \ | |
890 | while (_x_ /= 10) \ | |
891 | ans++; \ | |
892 | ans; \ | |
893 | }) | |
894 | ||
895 | int unlink_noerrno(const char *path); | |
896 | ||
897 | #define alloca0(n) \ | |
898 | ({ \ | |
899 | char *_new_; \ | |
900 | size_t _len_ = n; \ | |
901 | _new_ = alloca(_len_); \ | |
902 | (void *) memset(_new_, 0, _len_); \ | |
903 | }) | |
904 | ||
905 | /* It's not clear what alignment glibc/gcc alloca() guarantee, hence provide a guaranteed safe version */ | |
906 | #define alloca_align(size, align) \ | |
907 | ({ \ | |
908 | void *_ptr_; \ | |
909 | size_t _mask_ = (align) - 1; \ | |
910 | _ptr_ = alloca((size) + _mask_); \ | |
911 | (void*)(((uintptr_t)_ptr_ + _mask_) & ~_mask_); \ | |
912 | }) | |
913 | ||
914 | #define alloca0_align(size, align) \ | |
915 | ({ \ | |
916 | void *_new_; \ | |
917 | size_t _size_ = (size); \ | |
918 | _new_ = alloca_align(_size_, (align)); \ | |
919 | (void*)memset(_new_, 0, _size_); \ | |
920 | }) | |
921 | ||
922 | #define strjoina(a, ...) \ | |
923 | ({ \ | |
924 | const char *_appendees_[] = { a, __VA_ARGS__ }; \ | |
925 | char *_d_, *_p_; \ | |
926 | int _len_ = 0; \ | |
927 | unsigned _i_; \ | |
928 | for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \ | |
929 | _len_ += strlen(_appendees_[_i_]); \ | |
930 | _p_ = _d_ = alloca(_len_ + 1); \ | |
931 | for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \ | |
932 | _p_ = stpcpy(_p_, _appendees_[_i_]); \ | |
933 | *_p_ = 0; \ | |
934 | _d_; \ | |
935 | }) | |
936 | ||
937 | #define procfs_file_alloca(pid, field) \ | |
938 | ({ \ | |
939 | pid_t _pid_ = (pid); \ | |
940 | const char *_r_; \ | |
941 | if (_pid_ == 0) { \ | |
942 | _r_ = ("/proc/self/" field); \ | |
943 | } else { \ | |
944 | _r_ = alloca(strlen("/proc/") + DECIMAL_STR_MAX(pid_t) + 1 + sizeof(field)); \ | |
945 | sprintf((char*) _r_, "/proc/"PID_FMT"/" field, _pid_); \ | |
946 | } \ | |
947 | _r_; \ | |
948 | }) | |
949 | ||
950 | bool id128_is_valid(const char *s) _pure_; | |
951 | ||
952 | int split_pair(const char *s, const char *sep, char **l, char **r); | |
953 | ||
954 | int shall_restore_state(void); | |
955 | ||
956 | /** | |
957 | * Normal qsort requires base to be nonnull. Here were require | |
958 | * that only if nmemb > 0. | |
959 | */ | |
960 | static inline void qsort_safe(void *base, size_t nmemb, size_t size, | |
961 | int (*compar)(const void *, const void *)) { | |
962 | if (nmemb) { | |
963 | assert(base); | |
964 | qsort(base, nmemb, size, compar); | |
965 | } | |
966 | } | |
967 | ||
968 | int proc_cmdline(char **ret); | |
969 | int parse_proc_cmdline(int (*parse_word)(const char *key, const char *value)); | |
970 | int get_proc_cmdline_key(const char *parameter, char **value); | |
971 | ||
972 | int container_get_leader(const char *machine, pid_t *pid); | |
973 | ||
974 | int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *netns_fd, int *root_fd); | |
975 | int namespace_enter(int pidns_fd, int mntns_fd, int netns_fd, int root_fd); | |
976 | ||
977 | bool pid_is_alive(pid_t pid); | |
978 | bool pid_is_unwaited(pid_t pid); | |
979 | ||
980 | int getpeercred(int fd, struct ucred *ucred); | |
981 | int getpeersec(int fd, char **ret); | |
982 | ||
983 | int writev_safe(int fd, const struct iovec *w, int j); | |
984 | ||
985 | int mkostemp_safe(char *pattern, int flags); | |
986 | int open_tmpfile(const char *path, int flags); | |
987 | ||
988 | int fd_warn_permissions(const char *path, int fd); | |
989 | ||
990 | unsigned long personality_from_string(const char *p); | |
991 | const char *personality_to_string(unsigned long); | |
992 | ||
993 | uint64_t physical_memory(void); | |
994 | ||
995 | void hexdump(FILE *f, const void *p, size_t s); | |
996 | ||
997 | union file_handle_union { | |
998 | struct file_handle handle; | |
999 | char padding[sizeof(struct file_handle) + MAX_HANDLE_SZ]; | |
1000 | }; | |
1001 | #define FILE_HANDLE_INIT { .handle.handle_bytes = MAX_HANDLE_SZ } | |
1002 | ||
1003 | int update_reboot_param_file(const char *param); | |
1004 | ||
1005 | int umount_recursive(const char *target, int flags); | |
1006 | ||
1007 | int bind_remount_recursive(const char *prefix, bool ro); | |
1008 | ||
1009 | int fflush_and_check(FILE *f); | |
1010 | ||
1011 | int tempfn_xxxxxx(const char *p, char **ret); | |
1012 | int tempfn_random(const char *p, char **ret); | |
1013 | int tempfn_random_child(const char *p, char **ret); | |
1014 | ||
1015 | bool is_localhost(const char *hostname); | |
1016 | ||
1017 | int take_password_lock(const char *root); | |
1018 | ||
1019 | int is_symlink(const char *path); | |
1020 | int is_dir(const char *path, bool follow); | |
1021 | ||
1022 | typedef enum UnquoteFlags { | |
1023 | UNQUOTE_RELAX = 1, | |
1024 | UNQUOTE_CUNESCAPE = 2, | |
1025 | } UnquoteFlags; | |
1026 | ||
1027 | int unquote_first_word(const char **p, char **ret, UnquoteFlags flags); | |
1028 | int unquote_many_words(const char **p, UnquoteFlags flags, ...) _sentinel_; | |
1029 | ||
1030 | int free_and_strdup(char **p, const char *s); | |
1031 | ||
1032 | int sethostname_idempotent(const char *s); | |
1033 | ||
1034 | #define INOTIFY_EVENT_MAX (sizeof(struct inotify_event) + NAME_MAX + 1) | |
1035 | ||
1036 | #define FOREACH_INOTIFY_EVENT(e, buffer, sz) \ | |
1037 | for ((e) = &buffer.ev; \ | |
1038 | (uint8_t*) (e) < (uint8_t*) (buffer.raw) + (sz); \ | |
1039 | (e) = (struct inotify_event*) ((uint8_t*) (e) + sizeof(struct inotify_event) + (e)->len)) | |
1040 | ||
1041 | union inotify_event_buffer { | |
1042 | struct inotify_event ev; | |
1043 | uint8_t raw[INOTIFY_EVENT_MAX]; | |
1044 | }; | |
1045 | ||
1046 | #define laccess(path, mode) faccessat(AT_FDCWD, (path), (mode), AT_SYMLINK_NOFOLLOW) | |
1047 | ||
1048 | int ptsname_malloc(int fd, char **ret); | |
1049 | ||
1050 | int openpt_in_namespace(pid_t pid, int flags); | |
1051 | ||
1052 | ssize_t fgetxattrat_fake(int dirfd, const char *filename, const char *attribute, void *value, size_t size, int flags); | |
1053 | ||
1054 | int fd_setcrtime(int fd, usec_t usec); | |
1055 | int fd_getcrtime(int fd, usec_t *usec); | |
1056 | int path_getcrtime(const char *p, usec_t *usec); | |
1057 | int fd_getcrtime_at(int dirfd, const char *name, usec_t *usec, int flags); | |
1058 | ||
1059 | int same_fd(int a, int b); | |
1060 | ||
1061 | int chattr_fd(int fd, bool b, unsigned mask); | |
1062 | int chattr_path(const char *p, bool b, unsigned mask); | |
1063 | int change_attr_fd(int fd, unsigned value, unsigned mask); | |
1064 | ||
1065 | int read_attr_fd(int fd, unsigned *ret); | |
1066 | int read_attr_path(const char *p, unsigned *ret); | |
1067 | ||
1068 | typedef struct LockFile { | |
1069 | char *path; | |
1070 | int fd; | |
1071 | int operation; | |
1072 | } LockFile; | |
1073 | ||
1074 | int make_lock_file(const char *p, int operation, LockFile *ret); | |
1075 | int make_lock_file_for(const char *p, int operation, LockFile *ret); | |
1076 | void release_lock_file(LockFile *f); | |
1077 | ||
1078 | #define _cleanup_release_lock_file_ _cleanup_(release_lock_file) | |
1079 | ||
1080 | #define LOCK_FILE_INIT { .fd = -1, .path = NULL } | |
1081 | ||
1082 | #define RLIMIT_MAKE_CONST(lim) ((struct rlimit) { lim, lim }) | |
1083 | ||
1084 | ssize_t sparse_write(int fd, const void *p, size_t sz, size_t run_length); | |
1085 | ||
1086 | void sigkill_wait(pid_t *pid); | |
1087 | #define _cleanup_sigkill_wait_ _cleanup_(sigkill_wait) | |
1088 | ||
1089 | int syslog_parse_priority(const char **p, int *priority, bool with_facility); | |
1090 | ||
1091 | void cmsg_close_all(struct msghdr *mh); | |
1092 | ||
1093 | int rename_noreplace(int olddirfd, const char *oldpath, int newdirfd, const char *newpath); |