1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
6 This file is part of systemd.
8 Copyright 2010 Lennart Poettering
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.
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.
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/>.
35 #include <sys/types.h>
38 #include <sys/resource.h>
45 #include "time-util.h"
47 union dirent_storage {
49 uint8_t storage[offsetof(struct dirent, d_name) +
50 ((NAME_MAX + 1 + sizeof(long)) & ~(sizeof(long) - 1))];
53 /* What is interpreted as whitespace? */
54 #define WHITESPACE " \t\n\r"
55 #define NEWLINE "\n\r"
59 #define FORMAT_BYTES_MAX 8
61 #define ANSI_HIGHLIGHT_ON "\x1B[1;39m"
62 #define ANSI_RED_ON "\x1B[31m"
63 #define ANSI_HIGHLIGHT_RED_ON "\x1B[1;31m"
64 #define ANSI_GREEN_ON "\x1B[32m"
65 #define ANSI_HIGHLIGHT_GREEN_ON "\x1B[1;32m"
66 #define ANSI_HIGHLIGHT_YELLOW_ON "\x1B[1;33m"
67 #define ANSI_HIGHLIGHT_BLUE_ON "\x1B[1;34m"
68 #define ANSI_HIGHLIGHT_OFF "\x1B[0m"
69 #define ANSI_ERASE_TO_END_OF_LINE "\x1B[K"
71 size_t page_size(void);
72 #define PAGE_ALIGN(l) ALIGN_TO((l), page_size())
74 #define streq(a,b) (strcmp((a),(b)) == 0)
75 #define strneq(a, b, n) (strncmp((a), (b), (n)) == 0)
76 #define strcaseeq(a,b) (strcasecmp((a),(b)) == 0)
77 #define strncaseeq(a, b, n) (strncasecmp((a), (b), (n)) == 0)
79 bool streq_ptr(const char *a, const char *b) _pure_;
81 #define new(t, n) ((t*) malloc_multiply(sizeof(t), (n)))
83 #define new0(t, n) ((t*) calloc((n), sizeof(t)))
85 #define newa(t, n) ((t*) alloca(sizeof(t)*(n)))
87 #define newdup(t, p, n) ((t*) memdup_multiply(p, sizeof(t), (n)))
89 #define malloc0(n) (calloc((n), 1))
91 static inline const char* yes_no(bool b) {
92 return b ? "yes" : "no";
95 static inline const char* true_false(bool b) {
96 return b ? "true" : "false";
99 static inline const char* strempty(const char *s) {
103 static inline const char* strnull(const char *s) {
104 return s ? s : "(null)";
107 static inline const char *strna(const char *s) {
108 return s ? s : "n/a";
111 static inline bool isempty(const char *p) {
115 static inline const char *startswith(const char *s, const char *prefix) {
116 if (strncmp(s, prefix, strlen(prefix)) == 0)
117 return s + strlen(prefix);
121 static inline const char *startswith_no_case(const char *s, const char *prefix) {
122 if (strncasecmp(s, prefix, strlen(prefix)) == 0)
123 return s + strlen(prefix);
127 char *endswith(const char *s, const char *postfix) _pure_;
129 bool first_word(const char *s, const char *word) _pure_;
131 int close_nointr(int fd);
132 void close_nointr_nofail(int fd);
133 void close_many(const int fds[], unsigned n_fd);
135 int parse_boolean(const char *v) _pure_;
136 int parse_bytes(const char *t, off_t *bytes);
137 int parse_pid(const char *s, pid_t* ret_pid);
138 int parse_uid(const char *s, uid_t* ret_uid);
139 #define parse_gid(s, ret_uid) parse_uid(s, ret_uid)
141 int safe_atou(const char *s, unsigned *ret_u);
142 int safe_atoi(const char *s, int *ret_i);
144 int safe_atollu(const char *s, unsigned long long *ret_u);
145 int safe_atolli(const char *s, long long int *ret_i);
147 int safe_atod(const char *s, double *ret_d);
150 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
151 assert_cc(sizeof(unsigned long) == sizeof(unsigned));
152 return safe_atou(s, (unsigned*) ret_u);
154 static inline int safe_atoli(const char *s, long int *ret_u) {
155 assert_cc(sizeof(long int) == sizeof(int));
156 return safe_atoi(s, (int*) ret_u);
159 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
160 assert_cc(sizeof(unsigned long) == sizeof(unsigned long long));
161 return safe_atollu(s, (unsigned long long*) ret_u);
163 static inline int safe_atoli(const char *s, long int *ret_u) {
164 assert_cc(sizeof(long int) == sizeof(long long int));
165 return safe_atolli(s, (long long int*) ret_u);
169 static inline int safe_atou32(const char *s, uint32_t *ret_u) {
170 assert_cc(sizeof(uint32_t) == sizeof(unsigned));
171 return safe_atou(s, (unsigned*) ret_u);
174 static inline int safe_atoi32(const char *s, int32_t *ret_i) {
175 assert_cc(sizeof(int32_t) == sizeof(int));
176 return safe_atoi(s, (int*) ret_i);
179 static inline int safe_atou64(const char *s, uint64_t *ret_u) {
180 assert_cc(sizeof(uint64_t) == sizeof(unsigned long long));
181 return safe_atollu(s, (unsigned long long*) ret_u);
184 static inline int safe_atoi64(const char *s, int64_t *ret_i) {
185 assert_cc(sizeof(int64_t) == sizeof(long long int));
186 return safe_atolli(s, (long long int*) ret_i);
189 char *split(const char *c, size_t *l, const char *separator, char **state);
190 char *split_quoted(const char *c, size_t *l, char **state);
192 #define FOREACH_WORD(word, length, s, state) \
193 for ((state) = NULL, (word) = split((s), &(length), WHITESPACE, &(state)); (word); (word) = split((s), &(length), WHITESPACE, &(state)))
195 #define FOREACH_WORD_SEPARATOR(word, length, s, separator, state) \
196 for ((state) = NULL, (word) = split((s), &(length), (separator), &(state)); (word); (word) = split((s), &(length), (separator), &(state)))
198 #define FOREACH_WORD_QUOTED(word, length, s, state) \
199 for ((state) = NULL, (word) = split_quoted((s), &(length), &(state)); (word); (word) = split_quoted((s), &(length), &(state)))
201 pid_t get_parent_of_pid(pid_t pid, pid_t *ppid);
202 int get_starttime_of_pid(pid_t pid, unsigned long long *st);
204 char *strappend(const char *s, const char *suffix);
205 char *strnappend(const char *s, const char *suffix, size_t length);
207 char *replace_env(const char *format, char **env);
208 char **replace_env_argv(char **argv, char **env);
210 int readlink_malloc(const char *p, char **r);
211 int readlink_and_make_absolute(const char *p, char **r);
212 int readlink_and_canonicalize(const char *p, char **r);
214 int reset_all_signal_handlers(void);
216 char *strstrip(char *s);
217 char *delete_chars(char *s, const char *bad);
218 char *truncate_nl(char *s);
220 char *file_in_same_dir(const char *path, const char *filename);
222 int rmdir_parents(const char *path, const char *stop);
224 int get_process_comm(pid_t pid, char **name);
225 int get_process_cmdline(pid_t pid, size_t max_length, bool comm_fallback, char **line);
226 int get_process_exe(pid_t pid, char **name);
227 int get_process_uid(pid_t pid, uid_t *uid);
228 int get_process_gid(pid_t pid, gid_t *gid);
229 int get_process_capeff(pid_t pid, char **capeff);
231 char hexchar(int x) _const_;
232 int unhexchar(char c) _const_;
233 char octchar(int x) _const_;
234 int unoctchar(char c) _const_;
235 char decchar(int x) _const_;
236 int undecchar(char c) _const_;
238 char *cescape(const char *s);
239 char *cunescape(const char *s);
240 char *cunescape_length(const char *s, size_t length);
241 char *cunescape_length_with_prefix(const char *s, size_t length, const char *prefix);
243 char *xescape(const char *s, const char *bad);
245 char *ascii_strlower(char *path);
247 bool dirent_is_file(const struct dirent *de) _pure_;
248 bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix) _pure_;
250 bool ignore_file(const char *filename) _pure_;
252 bool chars_intersect(const char *a, const char *b) _pure_;
254 int make_stdio(int fd);
255 int make_null_stdio(void);
256 int make_console_stdio(void);
258 unsigned long long random_ull(void);
259 unsigned random_u(void);
261 /* For basic lookup tables with strictly enumerated entries */
262 #define __DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \
263 scope const char *name##_to_string(type i) { \
264 if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \
266 return name##_table[i]; \
268 scope type name##_from_string(const char *s) { \
271 for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \
272 if (name##_table[i] && \
273 streq(name##_table[i], s)) \
277 struct __useless_struct_to_allow_trailing_semicolon__
279 #define DEFINE_STRING_TABLE_LOOKUP(name,type) __DEFINE_STRING_TABLE_LOOKUP(name,type,)
280 #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP(name,type) __DEFINE_STRING_TABLE_LOOKUP(name,type,static)
282 /* For string conversions where numbers are also acceptable */
283 #define DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(name,type,max) \
284 int name##_to_string_alloc(type i, char **str) { \
287 if (i < 0 || i > max) \
289 if (i < (type) ELEMENTSOF(name##_table)) { \
290 s = strdup(name##_table[i]); \
294 r = asprintf(&s, "%u", i); \
301 type name##_from_string(const char *s) { \
305 for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \
306 if (name##_table[i] && \
307 streq(name##_table[i], s)) \
309 if (safe_atou(s, &u) >= 0 && u <= max) \
313 struct __useless_struct_to_allow_trailing_semicolon__
315 int fd_nonblock(int fd, bool nonblock);
316 int fd_cloexec(int fd, bool cloexec);
318 int close_all_fds(const int except[], unsigned n_except);
320 bool fstype_is_network(const char *fstype);
324 int read_one_char(FILE *f, char *ret, usec_t timeout, bool *need_nl);
325 int ask(char *ret, const char *replies, const char *text, ...) _printf_(3, 4);
327 int reset_terminal_fd(int fd, bool switch_to_text);
328 int reset_terminal(const char *name);
330 int open_terminal(const char *name, int mode);
331 int acquire_terminal(const char *name, bool fail, bool force, bool ignore_tiocstty_eperm, usec_t timeout);
332 int release_terminal(void);
334 int flush_fd(int fd);
336 int ignore_signals(int sig, ...);
337 int default_signals(int sig, ...);
338 int sigaction_many(const struct sigaction *sa, ...);
340 int close_pipe(int p[]);
341 int fopen_temporary(const char *path, FILE **_f, char **_temp_path);
343 ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll);
344 ssize_t loop_write(int fd, const void *buf, size_t nbytes, bool do_poll);
346 bool is_device_path(const char *path);
348 int dir_is_empty(const char *path);
349 char* dirname_malloc(const char *path);
351 void rename_process(const char name[8]);
353 void sigset_add_many(sigset_t *ss, ...);
355 bool hostname_is_set(void);
357 char* gethostname_malloc(void);
358 char* getlogname_malloc(void);
359 char* getusername_malloc(void);
361 int getttyname_malloc(int fd, char **r);
362 int getttyname_harder(int fd, char **r);
364 int get_ctty_devnr(pid_t pid, dev_t *d);
365 int get_ctty(pid_t, dev_t *_devnr, char **r);
367 int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid);
368 int fchmod_and_fchown(int fd, mode_t mode, uid_t uid, gid_t gid);
370 int rm_rf_children(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev);
371 int rm_rf_children_dangerous(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev);
372 int rm_rf(const char *path, bool only_dirs, bool delete_root, bool honour_sticky);
373 int rm_rf_dangerous(const char *path, bool only_dirs, bool delete_root, bool honour_sticky);
375 int pipe_eof(int fd);
377 cpu_set_t* cpu_set_malloc(unsigned *ncpus);
379 int status_vprintf(const char *status, bool ellipse, bool ephemeral, const char *format, va_list ap) _printf_(4,0);
380 int status_printf(const char *status, bool ellipse, bool ephemeral, const char *format, ...) _printf_(4,5);
381 int status_welcome(void);
383 int fd_columns(int fd);
384 unsigned columns(void);
385 int fd_lines(int fd);
386 unsigned lines(void);
387 void columns_lines_cache_reset(int _unused_ signum);
391 static inline const char *ansi_highlight(void) {
392 return on_tty() ? ANSI_HIGHLIGHT_ON : "";
395 static inline const char *ansi_highlight_red(void) {
396 return on_tty() ? ANSI_HIGHLIGHT_RED_ON : "";
399 static inline const char *ansi_highlight_green(void) {
400 return on_tty() ? ANSI_HIGHLIGHT_GREEN_ON : "";
403 static inline const char *ansi_highlight_yellow(void) {
404 return on_tty() ? ANSI_HIGHLIGHT_YELLOW_ON : "";
407 static inline const char *ansi_highlight_blue(void) {
408 return on_tty() ? ANSI_HIGHLIGHT_BLUE_ON : "";
411 static inline const char *ansi_highlight_off(void) {
412 return on_tty() ? ANSI_HIGHLIGHT_OFF : "";
415 int running_in_chroot(void);
417 char *ellipsize(const char *s, size_t length, unsigned percent);
419 char *ellipsize_mem(const char *s, size_t old_length, size_t new_length, unsigned percent);
421 int touch(const char *path);
423 char *unquote(const char *s, const char *quotes);
424 char *normalize_env_assignment(const char *s);
426 int wait_for_terminate(pid_t pid, siginfo_t *status);
427 int wait_for_terminate_and_warn(const char *name, pid_t pid);
429 noreturn void freeze(void);
431 bool null_or_empty(struct stat *st) _pure_;
432 int null_or_empty_path(const char *fn);
434 DIR *xopendirat(int dirfd, const char *name, int flags);
436 char *fstab_node_to_udev_node(const char *p);
438 char *resolve_dev_console(char **active);
439 bool tty_is_vc(const char *tty);
440 bool tty_is_vc_resolve(const char *tty);
441 bool tty_is_console(const char *tty) _pure_;
442 int vtnr_from_tty(const char *tty);
443 const char *default_term_for_tty(const char *tty);
445 void execute_directory(const char *directory, DIR *_d, char *argv[]);
447 int kill_and_sigcont(pid_t pid, int sig);
449 bool nulstr_contains(const char*nulstr, const char *needle);
451 bool plymouth_running(void);
453 bool hostname_is_valid(const char *s) _pure_;
454 char* hostname_cleanup(char *s, bool lowercase);
456 char* strshorten(char *s, size_t l);
458 int terminal_vhangup_fd(int fd);
459 int terminal_vhangup(const char *name);
461 int vt_disallocate(const char *name);
463 int copy_file(const char *from, const char *to, int flags);
465 int symlink_atomic(const char *from, const char *to);
467 int fchmod_umask(int fd, mode_t mode);
469 bool display_is_local(const char *display) _pure_;
470 int socket_from_display(const char *display, char **path);
472 int get_user_creds(const char **username, uid_t *uid, gid_t *gid, const char **home, const char **shell);
473 int get_group_creds(const char **groupname, gid_t *gid);
475 int in_gid(gid_t gid);
476 int in_group(const char *name);
478 char* uid_to_name(uid_t uid);
479 char* gid_to_name(gid_t gid);
481 int glob_exists(const char *path);
482 int glob_extend(char ***strv, const char *path);
484 int dirent_ensure_type(DIR *d, struct dirent *de);
486 int in_search_path(const char *path, char **search);
487 int get_files_in_directory(const char *path, char ***list);
489 char *strjoin(const char *x, ...) _sentinel_;
491 bool is_main_thread(void);
493 bool in_charset(const char *s, const char* charset) _pure_;
495 int block_get_whole_disk(dev_t d, dev_t *ret);
497 int file_is_priv_sticky(const char *p);
499 int strdup_or_null(const char *a, char **b);
501 #define NULSTR_FOREACH(i, l) \
502 for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1)
504 #define NULSTR_FOREACH_PAIR(i, j, l) \
505 for ((i) = (l), (j) = strchr((i), 0)+1; (i) && *(i); (i) = strchr((j), 0)+1, (j) = *(i) ? strchr((i), 0)+1 : (i))
507 int ioprio_class_to_string_alloc(int i, char **s);
508 int ioprio_class_from_string(const char *s);
510 const char *sigchld_code_to_string(int i) _const_;
511 int sigchld_code_from_string(const char *s) _pure_;
513 int log_facility_unshifted_to_string_alloc(int i, char **s);
514 int log_facility_unshifted_from_string(const char *s);
516 int log_level_to_string_alloc(int i, char **s);
517 int log_level_from_string(const char *s);
519 int sched_policy_to_string_alloc(int i, char **s);
520 int sched_policy_from_string(const char *s);
522 const char *rlimit_to_string(int i) _const_;
523 int rlimit_from_string(const char *s) _pure_;
525 int ip_tos_to_string_alloc(int i, char **s);
526 int ip_tos_from_string(const char *s);
528 const char *signal_to_string(int i) _const_;
529 int signal_from_string(const char *s) _pure_;
531 int signal_from_string_try_harder(const char *s);
533 extern int saved_argc;
534 extern char **saved_argv;
536 bool kexec_loaded(void);
538 int prot_from_flags(int flags) _const_;
540 char *format_bytes(char *buf, size_t l, off_t t);
542 int fd_wait_for_event(int fd, int event, usec_t timeout);
544 void* memdup(const void *p, size_t l) _alloc_(2);
546 int is_kernel_thread(pid_t pid);
548 int fd_inc_sndbuf(int fd, size_t n);
549 int fd_inc_rcvbuf(int fd, size_t n);
551 int fork_agent(pid_t *pid, const int except[], unsigned n_except, const char *path, ...);
553 int setrlimit_closest(int resource, const struct rlimit *rlim);
555 int getenv_for_pid(pid_t pid, const char *field, char **_value);
557 bool is_valid_documentation_url(const char *url) _pure_;
559 bool in_initrd(void);
561 void warn_melody(void);
563 int get_home_dir(char **ret);
564 int get_shell(char **_ret);
566 static inline void freep(void *p) {
570 #define DEFINE_TRIVIAL_CLEANUP_FUNC(type, func) \
571 static inline void func##p(type *p) { \
575 struct __useless_struct_to_allow_trailing_semicolon__
577 static inline void closep(int *fd) {
579 close_nointr_nofail(*fd);
582 static inline void umaskp(mode_t *u) {
586 static inline void close_pipep(int (*p)[2]) {
590 DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, fclose);
591 DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, pclose);
592 DEFINE_TRIVIAL_CLEANUP_FUNC(DIR*, closedir);
593 DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, endmntent);
595 #define _cleanup_free_ _cleanup_(freep)
596 #define _cleanup_close_ _cleanup_(closep)
597 #define _cleanup_umask_ _cleanup_(umaskp)
598 #define _cleanup_globfree_ _cleanup_(globfree)
599 #define _cleanup_fclose_ _cleanup_(fclosep)
600 #define _cleanup_pclose_ _cleanup_(pclosep)
601 #define _cleanup_closedir_ _cleanup_(closedirp)
602 #define _cleanup_endmntent_ _cleanup_(endmntentp)
603 #define _cleanup_close_pipe_ _cleanup_(close_pipep)
605 _malloc_ _alloc_(1, 2) static inline void *malloc_multiply(size_t a, size_t b) {
606 if (_unlikely_(b == 0 || a > ((size_t) -1) / b))
609 return malloc(a * b);
612 _alloc_(2, 3) static inline void *memdup_multiply(const void *p, size_t a, size_t b) {
613 if (_unlikely_(b == 0 || a > ((size_t) -1) / b))
616 return memdup(p, a * b);
619 bool filename_is_safe(const char *p) _pure_;
620 bool path_is_safe(const char *p) _pure_;
621 bool string_is_safe(const char *p) _pure_;
622 bool string_has_cc(const char *p) _pure_;
624 void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size,
625 int (*compar) (const void *, const void *, void *),
628 bool is_locale_utf8(void);
630 typedef enum DrawSpecialChar {
635 DRAW_TRIANGULAR_BULLET,
637 _DRAW_SPECIAL_CHAR_MAX
639 const char *draw_special_char(DrawSpecialChar ch);
641 char *strreplace(const char *text, const char *old_string, const char *new_string);
643 char *strip_tab_ansi(char **p, size_t *l);
645 int on_ac_power(void);
647 int search_and_fopen(const char *path, const char *mode, const char **search, FILE **_f);
648 int search_and_fopen_nulstr(const char *path, const char *mode, const char *search, FILE **_f);
650 #define FOREACH_LINE(line, f, on_error) \
652 if (!fgets(line, sizeof(line), f)) { \
659 #define FOREACH_DIRENT(de, d, on_error) \
660 for (errno = 0, de = readdir(d);; errno = 0, de = readdir(d)) \
666 } else if (ignore_file((de)->d_name)) \
670 static inline void *mempset(void *s, int c, size_t n) {
672 return (uint8_t*)s + n;
675 char *hexmem(const void *p, size_t l);
676 void *unhexmem(const char *p, size_t l);
678 char *strextend(char **x, ...) _sentinel_;
679 char *strrep(const char *s, unsigned n);
681 void* greedy_realloc(void **p, size_t *allocated, size_t need);
682 void* greedy_realloc0(void **p, size_t *allocated, size_t need);
683 #define GREEDY_REALLOC(array, allocated, need) \
684 greedy_realloc((void**) &(array), &(allocated), sizeof((array)[0]) * (need))
685 #define GREEDY_REALLOC0(array, allocated, need) \
686 greedy_realloc0((void**) &(array), &(allocated), sizeof((array)[0]) * (need))
688 static inline void _reset_errno_(int *saved_errno) {
689 errno = *saved_errno;
692 #define PROTECT_ERRNO _cleanup_(_reset_errno_) __attribute__((unused)) int _saved_errno_ = errno
694 struct _umask_struct_ {
699 static inline void _reset_umask_(struct _umask_struct_ *s) {
703 #define RUN_WITH_UMASK(mask) \
704 for (_cleanup_(_reset_umask_) struct _umask_struct_ _saved_umask_ = { umask(mask), false }; \
705 !_saved_umask_.quit ; \
706 _saved_umask_.quit = true)
708 static inline unsigned u64log2(uint64_t n) {
709 return (n > 1) ? __builtin_clzll(n) ^ 63U : 0;
712 static inline bool logind_running(void) {
713 return access("/run/systemd/seats/", F_OK) >= 0;
716 #define DECIMAL_STR_WIDTH(x) \
718 typeof(x) _x_ = (x); \
725 int unlink_noerrno(const char *path);
731 _new_ = alloca(_len_); \
732 (void *) memset(_new_, 0, _len_); \
735 #define strappenda(a, b) \
737 const char *_a_ = (a), *_b_ = (b); \
742 _c_ = alloca(_x_ + _y_ + 1); \
743 strcpy(stpcpy(_c_, _a_), _b_); \
747 #define procfs_file_alloca(pid, field) \
749 pid_t _pid_ = (pid); \
751 _r_ = alloca(sizeof("/proc/") -1 + DECIMAL_STR_MAX(pid_t) + 1 + sizeof(field)); \
752 sprintf(_r_, "/proc/%lu/" field, (unsigned long) _pid_); \
756 struct _locale_struct_ {
757 locale_t saved_locale;
762 static inline void _reset_locale_(struct _locale_struct_ *s) {
764 if (s->saved_locale != (locale_t) 0)
765 uselocale(s->saved_locale);
766 if (s->new_locale != (locale_t) 0)
767 freelocale(s->new_locale);
770 #define RUN_WITH_LOCALE(mask, loc) \
771 for (_cleanup_(_reset_locale_) struct _locale_struct_ _saved_locale_ = { (locale_t) 0, (locale_t) 0, false }; \
773 if (!_saved_locale_.quit) { \
775 _saved_locale_.new_locale = newlocale((mask), (loc), (locale_t) 0); \
776 if (_saved_locale_.new_locale != (locale_t) 0) \
777 _saved_locale_.saved_locale = uselocale(_saved_locale_.new_locale); \
779 !_saved_locale_.quit; }) ; \
780 _saved_locale_.quit = true)
782 bool id128_is_valid(const char *s) _pure_;
783 void parse_user_at_host(char *arg, char **user, char **host);
785 int split_pair(const char *s, const char *sep, char **l, char **r);
787 int shall_restore_state(void);
790 * Normal qsort requires base to be nonnull. Here were require
791 * that only if nmemb > 0.
793 static inline void qsort_safe(void *base, size_t nmemb, size_t size,
794 int (*compar)(const void *, const void *)) {
797 qsort(base, nmemb, size, compar);
801 int proc_cmdline(char **ret);
803 int container_get_leader(const char *machine, pid_t *pid);
805 int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *root_fd);
806 int namespace_enter(int pidns_fd, int mntns_fd, int root_fd);
808 bool pid_valid(pid_t pid);