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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 <inttypes.h> | |
25 | #include <time.h> | |
26 | #include <sys/time.h> | |
27 | #include <stdarg.h> | |
28 | #include <stdbool.h> | |
29 | #include <stdlib.h> | |
30 | #include <stdio.h> | |
31 | #include <signal.h> | |
32 | #include <sched.h> | |
33 | #include <limits.h> | |
34 | #include <sys/types.h> | |
35 | #include <sys/stat.h> | |
36 | #include <dirent.h> | |
37 | #include <sys/resource.h> | |
38 | #include <stddef.h> | |
39 | #include <unistd.h> | |
40 | ||
41 | #include <systemd/sd-journal.h> | |
42 | #include "macro.h" | |
43 | #include "time-util.h" | |
44 | ||
45 | union dirent_storage { | |
46 | struct dirent de; | |
47 | uint8_t storage[offsetof(struct dirent, d_name) + | |
48 | ((NAME_MAX + 1 + sizeof(long)) & ~(sizeof(long) - 1))]; | |
49 | }; | |
50 | ||
51 | /* What is interpreted as whitespace? */ | |
52 | #define WHITESPACE " \t\n\r" | |
53 | #define NEWLINE "\n\r" | |
54 | #define QUOTES "\"\'" | |
55 | #define COMMENTS "#;\n" | |
56 | ||
57 | #define FORMAT_BYTES_MAX 8 | |
58 | ||
59 | #define ANSI_HIGHLIGHT_ON "\x1B[1;39m" | |
60 | #define ANSI_RED_ON "\x1B[31m" | |
61 | #define ANSI_HIGHLIGHT_RED_ON "\x1B[1;31m" | |
62 | #define ANSI_GREEN_ON "\x1B[32m" | |
63 | #define ANSI_HIGHLIGHT_GREEN_ON "\x1B[1;32m" | |
64 | #define ANSI_HIGHLIGHT_YELLOW_ON "\x1B[1;33m" | |
65 | #define ANSI_HIGHLIGHT_OFF "\x1B[0m" | |
66 | #define ANSI_ERASE_TO_END_OF_LINE "\x1B[K" | |
67 | ||
68 | size_t page_size(void); | |
69 | #define PAGE_ALIGN(l) ALIGN_TO((l), page_size()) | |
70 | ||
71 | #define streq(a,b) (strcmp((a),(b)) == 0) | |
72 | #define strneq(a, b, n) (strncmp((a), (b), (n)) == 0) | |
73 | #define strcaseeq(a,b) (strcasecmp((a),(b)) == 0) | |
74 | #define strncaseeq(a, b, n) (strncasecmp((a), (b), (n)) == 0) | |
75 | ||
76 | bool streq_ptr(const char *a, const char *b); | |
77 | ||
78 | #define new(t, n) ((t*) malloc_multiply(sizeof(t), (n))) | |
79 | ||
80 | #define new0(t, n) ((t*) calloc((n), sizeof(t))) | |
81 | ||
82 | #define newa(t, n) ((t*) alloca(sizeof(t)*(n))) | |
83 | ||
84 | #define newdup(t, p, n) ((t*) memdup_multiply(p, sizeof(t), (n))) | |
85 | ||
86 | #define malloc0(n) (calloc((n), 1)) | |
87 | ||
88 | static inline const char* yes_no(bool b) { | |
89 | return b ? "yes" : "no"; | |
90 | } | |
91 | ||
92 | static inline const char* strempty(const char *s) { | |
93 | return s ? s : ""; | |
94 | } | |
95 | ||
96 | static inline const char* strnull(const char *s) { | |
97 | return s ? s : "(null)"; | |
98 | } | |
99 | ||
100 | static inline const char *strna(const char *s) { | |
101 | return s ? s : "n/a"; | |
102 | } | |
103 | ||
104 | static inline bool isempty(const char *p) { | |
105 | return !p || !p[0]; | |
106 | } | |
107 | ||
108 | char *endswith(const char *s, const char *postfix); | |
109 | char *startswith(const char *s, const char *prefix); | |
110 | char *startswith_no_case(const char *s, const char *prefix); | |
111 | ||
112 | bool first_word(const char *s, const char *word); | |
113 | ||
114 | int close_nointr(int fd); | |
115 | void close_nointr_nofail(int fd); | |
116 | void close_many(const int fds[], unsigned n_fd); | |
117 | ||
118 | int parse_boolean(const char *v); | |
119 | int parse_bytes(const char *t, off_t *bytes); | |
120 | int parse_pid(const char *s, pid_t* ret_pid); | |
121 | int parse_uid(const char *s, uid_t* ret_uid); | |
122 | #define parse_gid(s, ret_uid) parse_uid(s, ret_uid) | |
123 | ||
124 | int safe_atou(const char *s, unsigned *ret_u); | |
125 | int safe_atoi(const char *s, int *ret_i); | |
126 | ||
127 | int safe_atollu(const char *s, unsigned long long *ret_u); | |
128 | int safe_atolli(const char *s, long long int *ret_i); | |
129 | ||
130 | int safe_atod(const char *s, double *ret_d); | |
131 | ||
132 | #if __WORDSIZE == 32 | |
133 | static inline int safe_atolu(const char *s, unsigned long *ret_u) { | |
134 | assert_cc(sizeof(unsigned long) == sizeof(unsigned)); | |
135 | return safe_atou(s, (unsigned*) ret_u); | |
136 | } | |
137 | static inline int safe_atoli(const char *s, long int *ret_u) { | |
138 | assert_cc(sizeof(long int) == sizeof(int)); | |
139 | return safe_atoi(s, (int*) ret_u); | |
140 | } | |
141 | #else | |
142 | static inline int safe_atolu(const char *s, unsigned long *ret_u) { | |
143 | assert_cc(sizeof(unsigned long) == sizeof(unsigned long long)); | |
144 | return safe_atollu(s, (unsigned long long*) ret_u); | |
145 | } | |
146 | static inline int safe_atoli(const char *s, long int *ret_u) { | |
147 | assert_cc(sizeof(long int) == sizeof(long long int)); | |
148 | return safe_atolli(s, (long long int*) ret_u); | |
149 | } | |
150 | #endif | |
151 | ||
152 | static inline int safe_atou32(const char *s, uint32_t *ret_u) { | |
153 | assert_cc(sizeof(uint32_t) == sizeof(unsigned)); | |
154 | return safe_atou(s, (unsigned*) ret_u); | |
155 | } | |
156 | ||
157 | static inline int safe_atoi32(const char *s, int32_t *ret_i) { | |
158 | assert_cc(sizeof(int32_t) == sizeof(int)); | |
159 | return safe_atoi(s, (int*) ret_i); | |
160 | } | |
161 | ||
162 | static inline int safe_atou64(const char *s, uint64_t *ret_u) { | |
163 | assert_cc(sizeof(uint64_t) == sizeof(unsigned long long)); | |
164 | return safe_atollu(s, (unsigned long long*) ret_u); | |
165 | } | |
166 | ||
167 | static inline int safe_atoi64(const char *s, int64_t *ret_i) { | |
168 | assert_cc(sizeof(int64_t) == sizeof(long long int)); | |
169 | return safe_atolli(s, (long long int*) ret_i); | |
170 | } | |
171 | ||
172 | char *split(const char *c, size_t *l, const char *separator, char **state); | |
173 | char *split_quoted(const char *c, size_t *l, char **state); | |
174 | ||
175 | #define FOREACH_WORD(word, length, s, state) \ | |
176 | for ((state) = NULL, (word) = split((s), &(length), WHITESPACE, &(state)); (word); (word) = split((s), &(length), WHITESPACE, &(state))) | |
177 | ||
178 | #define FOREACH_WORD_SEPARATOR(word, length, s, separator, state) \ | |
179 | for ((state) = NULL, (word) = split((s), &(length), (separator), &(state)); (word); (word) = split((s), &(length), (separator), &(state))) | |
180 | ||
181 | #define FOREACH_WORD_QUOTED(word, length, s, state) \ | |
182 | for ((state) = NULL, (word) = split_quoted((s), &(length), &(state)); (word); (word) = split_quoted((s), &(length), &(state))) | |
183 | ||
184 | pid_t get_parent_of_pid(pid_t pid, pid_t *ppid); | |
185 | int get_starttime_of_pid(pid_t pid, unsigned long long *st); | |
186 | ||
187 | char *strappend(const char *s, const char *suffix); | |
188 | char *strnappend(const char *s, const char *suffix, size_t length); | |
189 | ||
190 | char *replace_env(const char *format, char **env); | |
191 | char **replace_env_argv(char **argv, char **env); | |
192 | ||
193 | int readlink_malloc(const char *p, char **r); | |
194 | int readlink_and_make_absolute(const char *p, char **r); | |
195 | int readlink_and_canonicalize(const char *p, char **r); | |
196 | ||
197 | int reset_all_signal_handlers(void); | |
198 | ||
199 | char *strstrip(char *s); | |
200 | char *delete_chars(char *s, const char *bad); | |
201 | char *truncate_nl(char *s); | |
202 | ||
203 | char *file_in_same_dir(const char *path, const char *filename); | |
204 | ||
205 | int rmdir_parents(const char *path, const char *stop); | |
206 | ||
207 | int get_process_comm(pid_t pid, char **name); | |
208 | int get_process_cmdline(pid_t pid, size_t max_length, bool comm_fallback, char **line); | |
209 | int get_process_exe(pid_t pid, char **name); | |
210 | int get_process_uid(pid_t pid, uid_t *uid); | |
211 | int get_process_gid(pid_t pid, gid_t *gid); | |
212 | ||
213 | char hexchar(int x); | |
214 | int unhexchar(char c); | |
215 | char octchar(int x); | |
216 | int unoctchar(char c); | |
217 | char decchar(int x); | |
218 | int undecchar(char c); | |
219 | ||
220 | char *cescape(const char *s); | |
221 | char *cunescape(const char *s); | |
222 | char *cunescape_length(const char *s, size_t length); | |
223 | char *cunescape_length_with_prefix(const char *s, size_t length, const char *prefix); | |
224 | ||
225 | char *xescape(const char *s, const char *bad); | |
226 | ||
227 | char *bus_path_escape(const char *s); | |
228 | char *bus_path_unescape(const char *s); | |
229 | ||
230 | char *ascii_strlower(char *path); | |
231 | ||
232 | bool dirent_is_file(const struct dirent *de); | |
233 | bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix); | |
234 | ||
235 | bool ignore_file(const char *filename); | |
236 | ||
237 | bool chars_intersect(const char *a, const char *b); | |
238 | ||
239 | int make_stdio(int fd); | |
240 | int make_null_stdio(void); | |
241 | int make_console_stdio(void); | |
242 | ||
243 | unsigned long long random_ull(void); | |
244 | ||
245 | /* For basic lookup tables with strictly enumerated entries */ | |
246 | #define __DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \ | |
247 | scope const char *name##_to_string(type i) { \ | |
248 | if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \ | |
249 | return NULL; \ | |
250 | return name##_table[i]; \ | |
251 | } \ | |
252 | scope type name##_from_string(const char *s) { \ | |
253 | type i; \ | |
254 | assert(s); \ | |
255 | for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \ | |
256 | if (name##_table[i] && \ | |
257 | streq(name##_table[i], s)) \ | |
258 | return i; \ | |
259 | return (type) -1; \ | |
260 | } \ | |
261 | struct __useless_struct_to_allow_trailing_semicolon__ | |
262 | ||
263 | #define DEFINE_STRING_TABLE_LOOKUP(name,type) __DEFINE_STRING_TABLE_LOOKUP(name,type,) | |
264 | #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP(name,type) __DEFINE_STRING_TABLE_LOOKUP(name,type,static) | |
265 | ||
266 | /* For string conversions where numbers are also acceptable */ | |
267 | #define DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(name,type,max) \ | |
268 | int name##_to_string_alloc(type i, char **str) { \ | |
269 | char *s; \ | |
270 | int r; \ | |
271 | if (i < 0 || i > max) \ | |
272 | return -ERANGE; \ | |
273 | if (i < (type) ELEMENTSOF(name##_table)) { \ | |
274 | s = strdup(name##_table[i]); \ | |
275 | if (!s) \ | |
276 | return log_oom(); \ | |
277 | } else { \ | |
278 | r = asprintf(&s, "%u", i); \ | |
279 | if (r < 0) \ | |
280 | return log_oom(); \ | |
281 | } \ | |
282 | *str = s; \ | |
283 | return 0; \ | |
284 | } \ | |
285 | type name##_from_string(const char *s) { \ | |
286 | type i; \ | |
287 | unsigned u = 0; \ | |
288 | assert(s); \ | |
289 | for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \ | |
290 | if (name##_table[i] && \ | |
291 | streq(name##_table[i], s)) \ | |
292 | return i; \ | |
293 | if (safe_atou(s, &u) >= 0 && u <= max) \ | |
294 | return (type) u; \ | |
295 | return (type) -1; \ | |
296 | } \ | |
297 | struct __useless_struct_to_allow_trailing_semicolon__ | |
298 | ||
299 | int fd_nonblock(int fd, bool nonblock); | |
300 | int fd_cloexec(int fd, bool cloexec); | |
301 | ||
302 | int close_all_fds(const int except[], unsigned n_except); | |
303 | ||
304 | bool fstype_is_network(const char *fstype); | |
305 | ||
306 | int chvt(int vt); | |
307 | ||
308 | int read_one_char(FILE *f, char *ret, usec_t timeout, bool *need_nl); | |
309 | int ask(char *ret, const char *replies, const char *text, ...); | |
310 | ||
311 | int reset_terminal_fd(int fd, bool switch_to_text); | |
312 | int reset_terminal(const char *name); | |
313 | ||
314 | int open_terminal(const char *name, int mode); | |
315 | int acquire_terminal(const char *name, bool fail, bool force, bool ignore_tiocstty_eperm, usec_t timeout); | |
316 | int release_terminal(void); | |
317 | ||
318 | int flush_fd(int fd); | |
319 | ||
320 | int ignore_signals(int sig, ...); | |
321 | int default_signals(int sig, ...); | |
322 | int sigaction_many(const struct sigaction *sa, ...); | |
323 | ||
324 | int close_pipe(int p[]); | |
325 | int fopen_temporary(const char *path, FILE **_f, char **_temp_path); | |
326 | ||
327 | ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll); | |
328 | ssize_t loop_write(int fd, const void *buf, size_t nbytes, bool do_poll); | |
329 | ||
330 | bool is_device_path(const char *path); | |
331 | ||
332 | int dir_is_empty(const char *path); | |
333 | char* dirname_malloc(const char *path); | |
334 | ||
335 | void rename_process(const char name[8]); | |
336 | ||
337 | void sigset_add_many(sigset_t *ss, ...); | |
338 | ||
339 | bool hostname_is_set(void); | |
340 | ||
341 | char* gethostname_malloc(void); | |
342 | char* getlogname_malloc(void); | |
343 | char* getusername_malloc(void); | |
344 | ||
345 | int getttyname_malloc(int fd, char **r); | |
346 | int getttyname_harder(int fd, char **r); | |
347 | ||
348 | int get_ctty_devnr(pid_t pid, dev_t *d); | |
349 | int get_ctty(pid_t, dev_t *_devnr, char **r); | |
350 | ||
351 | int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid); | |
352 | int fchmod_and_fchown(int fd, mode_t mode, uid_t uid, gid_t gid); | |
353 | ||
354 | int rm_rf_children(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev); | |
355 | int rm_rf_children_dangerous(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev); | |
356 | int rm_rf(const char *path, bool only_dirs, bool delete_root, bool honour_sticky); | |
357 | int rm_rf_dangerous(const char *path, bool only_dirs, bool delete_root, bool honour_sticky); | |
358 | ||
359 | int pipe_eof(int fd); | |
360 | ||
361 | cpu_set_t* cpu_set_malloc(unsigned *ncpus); | |
362 | ||
363 | int status_vprintf(const char *status, bool ellipse, bool ephemeral, const char *format, va_list ap); | |
364 | int status_printf(const char *status, bool ellipse, bool ephemeral, const char *format, ...); | |
365 | int status_welcome(void); | |
366 | ||
367 | int fd_columns(int fd); | |
368 | unsigned columns(void); | |
369 | int fd_lines(int fd); | |
370 | unsigned lines(void); | |
371 | void columns_lines_cache_reset(int _unused_ signum); | |
372 | ||
373 | bool on_tty(void); | |
374 | ||
375 | int running_in_chroot(void); | |
376 | ||
377 | char *ellipsize(const char *s, size_t length, unsigned percent); | |
378 | char *ellipsize_mem(const char *s, size_t old_length, size_t new_length, unsigned percent); | |
379 | ||
380 | int touch(const char *path); | |
381 | ||
382 | char *unquote(const char *s, const char *quotes); | |
383 | char *normalize_env_assignment(const char *s); | |
384 | ||
385 | int wait_for_terminate(pid_t pid, siginfo_t *status); | |
386 | int wait_for_terminate_and_warn(const char *name, pid_t pid); | |
387 | ||
388 | _noreturn_ void freeze(void); | |
389 | ||
390 | bool null_or_empty(struct stat *st); | |
391 | int null_or_empty_path(const char *fn); | |
392 | ||
393 | DIR *xopendirat(int dirfd, const char *name, int flags); | |
394 | ||
395 | char *fstab_node_to_udev_node(const char *p); | |
396 | ||
397 | char *resolve_dev_console(char **active); | |
398 | bool tty_is_vc(const char *tty); | |
399 | bool tty_is_vc_resolve(const char *tty); | |
400 | bool tty_is_console(const char *tty); | |
401 | int vtnr_from_tty(const char *tty); | |
402 | const char *default_term_for_tty(const char *tty); | |
403 | ||
404 | void execute_directory(const char *directory, DIR *_d, char *argv[]); | |
405 | ||
406 | int kill_and_sigcont(pid_t pid, int sig); | |
407 | ||
408 | bool nulstr_contains(const char*nulstr, const char *needle); | |
409 | ||
410 | bool plymouth_running(void); | |
411 | ||
412 | bool hostname_is_valid(const char *s); | |
413 | char* hostname_cleanup(char *s); | |
414 | ||
415 | char* strshorten(char *s, size_t l); | |
416 | ||
417 | int terminal_vhangup_fd(int fd); | |
418 | int terminal_vhangup(const char *name); | |
419 | ||
420 | int vt_disallocate(const char *name); | |
421 | ||
422 | int copy_file(const char *from, const char *to); | |
423 | ||
424 | int symlink_atomic(const char *from, const char *to); | |
425 | ||
426 | int fchmod_umask(int fd, mode_t mode); | |
427 | ||
428 | bool display_is_local(const char *display); | |
429 | int socket_from_display(const char *display, char **path); | |
430 | ||
431 | int get_user_creds(const char **username, uid_t *uid, gid_t *gid, const char **home, const char **shell); | |
432 | int get_group_creds(const char **groupname, gid_t *gid); | |
433 | ||
434 | int in_gid(gid_t gid); | |
435 | int in_group(const char *name); | |
436 | ||
437 | char* uid_to_name(uid_t uid); | |
438 | char* gid_to_name(gid_t gid); | |
439 | ||
440 | int glob_exists(const char *path); | |
441 | ||
442 | int dirent_ensure_type(DIR *d, struct dirent *de); | |
443 | ||
444 | int in_search_path(const char *path, char **search); | |
445 | int get_files_in_directory(const char *path, char ***list); | |
446 | ||
447 | char *strjoin(const char *x, ...) _sentinel_; | |
448 | ||
449 | bool is_main_thread(void); | |
450 | ||
451 | bool in_charset(const char *s, const char* charset); | |
452 | ||
453 | int block_get_whole_disk(dev_t d, dev_t *ret); | |
454 | ||
455 | int file_is_priv_sticky(const char *p); | |
456 | ||
457 | int strdup_or_null(const char *a, char **b); | |
458 | ||
459 | #define NULSTR_FOREACH(i, l) \ | |
460 | for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1) | |
461 | ||
462 | #define NULSTR_FOREACH_PAIR(i, j, l) \ | |
463 | for ((i) = (l), (j) = strchr((i), 0)+1; (i) && *(i); (i) = strchr((j), 0)+1, (j) = *(i) ? strchr((i), 0)+1 : (i)) | |
464 | ||
465 | int ioprio_class_to_string_alloc(int i, char **s); | |
466 | int ioprio_class_from_string(const char *s); | |
467 | ||
468 | const char *sigchld_code_to_string(int i); | |
469 | int sigchld_code_from_string(const char *s); | |
470 | ||
471 | int log_facility_unshifted_to_string_alloc(int i, char **s); | |
472 | int log_facility_unshifted_from_string(const char *s); | |
473 | ||
474 | int log_level_to_string_alloc(int i, char **s); | |
475 | int log_level_from_string(const char *s); | |
476 | ||
477 | int sched_policy_to_string_alloc(int i, char **s); | |
478 | int sched_policy_from_string(const char *s); | |
479 | ||
480 | const char *rlimit_to_string(int i); | |
481 | int rlimit_from_string(const char *s); | |
482 | ||
483 | int ip_tos_to_string_alloc(int i, char **s); | |
484 | int ip_tos_from_string(const char *s); | |
485 | ||
486 | const char *signal_to_string(int i); | |
487 | int signal_from_string(const char *s); | |
488 | ||
489 | int signal_from_string_try_harder(const char *s); | |
490 | ||
491 | extern int saved_argc; | |
492 | extern char **saved_argv; | |
493 | ||
494 | bool kexec_loaded(void); | |
495 | ||
496 | int prot_from_flags(int flags); | |
497 | ||
498 | char *format_bytes(char *buf, size_t l, off_t t); | |
499 | ||
500 | int fd_wait_for_event(int fd, int event, usec_t timeout); | |
501 | ||
502 | void* memdup(const void *p, size_t l) _malloc_; | |
503 | ||
504 | int is_kernel_thread(pid_t pid); | |
505 | ||
506 | int fd_inc_sndbuf(int fd, size_t n); | |
507 | int fd_inc_rcvbuf(int fd, size_t n); | |
508 | ||
509 | int fork_agent(pid_t *pid, const int except[], unsigned n_except, const char *path, ...); | |
510 | ||
511 | int setrlimit_closest(int resource, const struct rlimit *rlim); | |
512 | ||
513 | int getenv_for_pid(pid_t pid, const char *field, char **_value); | |
514 | ||
515 | int can_sleep(const char *type); | |
516 | int can_sleep_disk(const char *type); | |
517 | ||
518 | bool is_valid_documentation_url(const char *url); | |
519 | ||
520 | bool in_initrd(void); | |
521 | ||
522 | void warn_melody(void); | |
523 | ||
524 | int get_home_dir(char **ret); | |
525 | ||
526 | static inline void freep(void *p) { | |
527 | free(*(void**) p); | |
528 | } | |
529 | ||
530 | void fclosep(FILE **f); | |
531 | void pclosep(FILE **f); | |
532 | void closep(int *fd); | |
533 | void closedirp(DIR **d); | |
534 | static inline void umaskp(mode_t *u) { | |
535 | umask(*u); | |
536 | } | |
537 | ||
538 | static inline void journal_closep(sd_journal **j) { | |
539 | sd_journal_close(*j); | |
540 | } | |
541 | ||
542 | #define _cleanup_globfree_ __attribute__((cleanup(globfree))) | |
543 | ||
544 | _malloc_ static inline void *malloc_multiply(size_t a, size_t b) { | |
545 | if (_unlikely_(b == 0 || a > ((size_t) -1) / b)) | |
546 | return NULL; | |
547 | ||
548 | return malloc(a * b); | |
549 | } | |
550 | ||
551 | _malloc_ static inline void *memdup_multiply(const void *p, size_t a, size_t b) { | |
552 | if (_unlikely_(b == 0 || a > ((size_t) -1) / b)) | |
553 | return NULL; | |
554 | ||
555 | return memdup(p, a * b); | |
556 | } | |
557 | ||
558 | bool filename_is_safe(const char *p); | |
559 | bool path_is_safe(const char *p); | |
560 | bool string_is_safe(const char *p); | |
561 | bool string_has_cc(const char *p); | |
562 | ||
563 | void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size, | |
564 | int (*compar) (const void *, const void *, void *), | |
565 | void *arg); | |
566 | ||
567 | bool is_locale_utf8(void); | |
568 | ||
569 | typedef enum DrawSpecialChar { | |
570 | DRAW_TREE_VERT, | |
571 | DRAW_TREE_BRANCH, | |
572 | DRAW_TREE_RIGHT, | |
573 | DRAW_TREE_SPACE, | |
574 | DRAW_TRIANGULAR_BULLET, | |
575 | _DRAW_SPECIAL_CHAR_MAX | |
576 | } DrawSpecialChar; | |
577 | const char *draw_special_char(DrawSpecialChar ch); | |
578 | ||
579 | char *strreplace(const char *text, const char *old_string, const char *new_string); | |
580 | ||
581 | char *strip_tab_ansi(char **p, size_t *l); | |
582 | ||
583 | int on_ac_power(void); | |
584 | ||
585 | int search_and_fopen(const char *path, const char *mode, const char **search, FILE **_f); | |
586 | int search_and_fopen_nulstr(const char *path, const char *mode, const char *search, FILE **_f); | |
587 | int create_tmp_dir(char template[], char** dir_name); | |
588 | ||
589 | #define FOREACH_LINE(line, f, on_error) \ | |
590 | for (;;) \ | |
591 | if (!fgets(line, sizeof(line), f)) { \ | |
592 | if (ferror(f)) { \ | |
593 | on_error; \ | |
594 | } \ | |
595 | break; \ | |
596 | } else | |
597 | ||
598 | #define FOREACH_DIRENT(de, d, on_error) \ | |
599 | for (errno = 0, de = readdir(d);; errno = 0, de = readdir(d)) \ | |
600 | if (!de) { \ | |
601 | if (errno > 0) { \ | |
602 | on_error; \ | |
603 | } \ | |
604 | break; \ | |
605 | } else if (ignore_file((de)->d_name)) \ | |
606 | continue; \ | |
607 | else | |
608 | ||
609 | static inline void *mempset(void *s, int c, size_t n) { | |
610 | memset(s, c, n); | |
611 | return (char*)s + n; | |
612 | } | |
613 | ||
614 | char *hexmem(const void *p, size_t l); | |
615 | void *unhexmem(const char *p, size_t l); | |
616 | ||
617 | char *strextend(char **x, ...); | |
618 | char *strrep(const char *s, unsigned n); | |
619 | ||
620 | void* greedy_realloc(void **p, size_t *allocated, size_t need); | |
621 | ||
622 | static inline void _reset_errno_(int *saved_errno) { | |
623 | errno = *saved_errno; | |
624 | } | |
625 | ||
626 | #define PROTECT_ERRNO __attribute__((cleanup(_reset_errno_))) int _saved_errno_ = errno | |
627 | ||
628 | struct umask_struct { | |
629 | mode_t mask; | |
630 | bool quit; | |
631 | }; | |
632 | ||
633 | static inline void _reset_umask_(struct umask_struct *s) { | |
634 | umask(s->mask); | |
635 | }; | |
636 | ||
637 | #define RUN_WITH_UMASK(mask) \ | |
638 | for (__attribute__((cleanup(_reset_umask_))) struct umask_struct _saved_umask_ = { umask(mask), false }; \ | |
639 | !_saved_umask_.quit ; \ | |
640 | _saved_umask_.quit = true) | |
641 | ||
642 | static inline unsigned u64log2(uint64_t n) { | |
643 | return (n > 1) ? __builtin_clzll(n) ^ 63U : 0; | |
644 | } | |
645 | ||
646 | static inline bool logind_running(void) { | |
647 | return access("/run/systemd/seats/", F_OK) >= 0; | |
648 | } |