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* strempty(const char *s) {
99 static inline const char* strnull(const char *s) {
100 return s ? s : "(null)";
103 static inline const char *strna(const char *s) {
104 return s ? s : "n/a";
107 static inline bool isempty(const char *p) {
111 static inline const char *startswith(const char *s, const char *prefix) {
112 if (strncmp(s, prefix, strlen(prefix)) == 0)
113 return s + strlen(prefix);
117 static inline const char *startswith_no_case(const char *s, const char *prefix) {
118 if (strncasecmp(s, prefix, strlen(prefix)) == 0)
119 return s + strlen(prefix);
123 char *endswith(const char *s, const char *postfix) _pure_;
125 bool first_word(const char *s, const char *word) _pure_;
127 int close_nointr(int fd);
128 void close_nointr_nofail(int fd);
129 void close_many(const int fds[], unsigned n_fd);
131 int parse_boolean(const char *v) _pure_;
132 int parse_bytes(const char *t, off_t *bytes);
133 int parse_pid(const char *s, pid_t* ret_pid);
134 int parse_uid(const char *s, uid_t* ret_uid);
135 #define parse_gid(s, ret_uid) parse_uid(s, ret_uid)
137 int safe_atou(const char *s, unsigned *ret_u);
138 int safe_atoi(const char *s, int *ret_i);
140 int safe_atollu(const char *s, unsigned long long *ret_u);
141 int safe_atolli(const char *s, long long int *ret_i);
143 int safe_atod(const char *s, double *ret_d);
146 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
147 assert_cc(sizeof(unsigned long) == sizeof(unsigned));
148 return safe_atou(s, (unsigned*) ret_u);
150 static inline int safe_atoli(const char *s, long int *ret_u) {
151 assert_cc(sizeof(long int) == sizeof(int));
152 return safe_atoi(s, (int*) ret_u);
155 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
156 assert_cc(sizeof(unsigned long) == sizeof(unsigned long long));
157 return safe_atollu(s, (unsigned long long*) ret_u);
159 static inline int safe_atoli(const char *s, long int *ret_u) {
160 assert_cc(sizeof(long int) == sizeof(long long int));
161 return safe_atolli(s, (long long int*) ret_u);
165 static inline int safe_atou32(const char *s, uint32_t *ret_u) {
166 assert_cc(sizeof(uint32_t) == sizeof(unsigned));
167 return safe_atou(s, (unsigned*) ret_u);
170 static inline int safe_atoi32(const char *s, int32_t *ret_i) {
171 assert_cc(sizeof(int32_t) == sizeof(int));
172 return safe_atoi(s, (int*) ret_i);
175 static inline int safe_atou64(const char *s, uint64_t *ret_u) {
176 assert_cc(sizeof(uint64_t) == sizeof(unsigned long long));
177 return safe_atollu(s, (unsigned long long*) ret_u);
180 static inline int safe_atoi64(const char *s, int64_t *ret_i) {
181 assert_cc(sizeof(int64_t) == sizeof(long long int));
182 return safe_atolli(s, (long long int*) ret_i);
185 char *split(const char *c, size_t *l, const char *separator, char **state);
186 char *split_quoted(const char *c, size_t *l, char **state);
188 #define FOREACH_WORD(word, length, s, state) \
189 for ((state) = NULL, (word) = split((s), &(length), WHITESPACE, &(state)); (word); (word) = split((s), &(length), WHITESPACE, &(state)))
191 #define FOREACH_WORD_SEPARATOR(word, length, s, separator, state) \
192 for ((state) = NULL, (word) = split((s), &(length), (separator), &(state)); (word); (word) = split((s), &(length), (separator), &(state)))
194 #define FOREACH_WORD_QUOTED(word, length, s, state) \
195 for ((state) = NULL, (word) = split_quoted((s), &(length), &(state)); (word); (word) = split_quoted((s), &(length), &(state)))
197 pid_t get_parent_of_pid(pid_t pid, pid_t *ppid);
198 int get_starttime_of_pid(pid_t pid, unsigned long long *st);
200 char *strappend(const char *s, const char *suffix);
201 char *strnappend(const char *s, const char *suffix, size_t length);
203 char *replace_env(const char *format, char **env);
204 char **replace_env_argv(char **argv, char **env);
206 int readlink_malloc(const char *p, char **r);
207 int readlink_and_make_absolute(const char *p, char **r);
208 int readlink_and_canonicalize(const char *p, char **r);
210 int reset_all_signal_handlers(void);
212 char *strstrip(char *s);
213 char *delete_chars(char *s, const char *bad);
214 char *truncate_nl(char *s);
216 char *file_in_same_dir(const char *path, const char *filename);
218 int rmdir_parents(const char *path, const char *stop);
220 int get_process_comm(pid_t pid, char **name);
221 int get_process_cmdline(pid_t pid, size_t max_length, bool comm_fallback, char **line);
222 int get_process_exe(pid_t pid, char **name);
223 int get_process_uid(pid_t pid, uid_t *uid);
224 int get_process_gid(pid_t pid, gid_t *gid);
225 int get_process_capeff(pid_t pid, char **capeff);
227 char hexchar(int x) _const_;
228 int unhexchar(char c) _const_;
229 char octchar(int x) _const_;
230 int unoctchar(char c) _const_;
231 char decchar(int x) _const_;
232 int undecchar(char c) _const_;
234 char *cescape(const char *s);
235 char *cunescape(const char *s);
236 char *cunescape_length(const char *s, size_t length);
237 char *cunescape_length_with_prefix(const char *s, size_t length, const char *prefix);
239 char *xescape(const char *s, const char *bad);
241 char *ascii_strlower(char *path);
243 bool dirent_is_file(const struct dirent *de) _pure_;
244 bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix) _pure_;
246 bool ignore_file(const char *filename) _pure_;
248 bool chars_intersect(const char *a, const char *b) _pure_;
250 int make_stdio(int fd);
251 int make_null_stdio(void);
252 int make_console_stdio(void);
254 unsigned long long random_ull(void);
255 unsigned random_u(void);
257 /* For basic lookup tables with strictly enumerated entries */
258 #define __DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \
259 scope const char *name##_to_string(type i) { \
260 if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \
262 return name##_table[i]; \
264 scope type name##_from_string(const char *s) { \
267 for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \
268 if (name##_table[i] && \
269 streq(name##_table[i], s)) \
273 struct __useless_struct_to_allow_trailing_semicolon__
275 #define DEFINE_STRING_TABLE_LOOKUP(name,type) __DEFINE_STRING_TABLE_LOOKUP(name,type,)
276 #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP(name,type) __DEFINE_STRING_TABLE_LOOKUP(name,type,static)
278 /* For string conversions where numbers are also acceptable */
279 #define DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(name,type,max) \
280 int name##_to_string_alloc(type i, char **str) { \
283 if (i < 0 || i > max) \
285 if (i < (type) ELEMENTSOF(name##_table)) { \
286 s = strdup(name##_table[i]); \
290 r = asprintf(&s, "%u", i); \
297 type name##_from_string(const char *s) { \
301 for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \
302 if (name##_table[i] && \
303 streq(name##_table[i], s)) \
305 if (safe_atou(s, &u) >= 0 && u <= max) \
309 struct __useless_struct_to_allow_trailing_semicolon__
311 int fd_nonblock(int fd, bool nonblock);
312 int fd_cloexec(int fd, bool cloexec);
314 int close_all_fds(const int except[], unsigned n_except);
316 bool fstype_is_network(const char *fstype);
320 int read_one_char(FILE *f, char *ret, usec_t timeout, bool *need_nl);
321 int ask(char *ret, const char *replies, const char *text, ...) _printf_(3, 4);
323 int reset_terminal_fd(int fd, bool switch_to_text);
324 int reset_terminal(const char *name);
326 int open_terminal(const char *name, int mode);
327 int acquire_terminal(const char *name, bool fail, bool force, bool ignore_tiocstty_eperm, usec_t timeout);
328 int release_terminal(void);
330 int flush_fd(int fd);
332 int ignore_signals(int sig, ...);
333 int default_signals(int sig, ...);
334 int sigaction_many(const struct sigaction *sa, ...);
336 int close_pipe(int p[]);
337 int fopen_temporary(const char *path, FILE **_f, char **_temp_path);
339 ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll);
340 ssize_t loop_write(int fd, const void *buf, size_t nbytes, bool do_poll);
342 bool is_device_path(const char *path);
344 int dir_is_empty(const char *path);
345 char* dirname_malloc(const char *path);
347 void rename_process(const char name[8]);
349 void sigset_add_many(sigset_t *ss, ...);
351 bool hostname_is_set(void);
353 char* gethostname_malloc(void);
354 char* getlogname_malloc(void);
355 char* getusername_malloc(void);
357 int getttyname_malloc(int fd, char **r);
358 int getttyname_harder(int fd, char **r);
360 int get_ctty_devnr(pid_t pid, dev_t *d);
361 int get_ctty(pid_t, dev_t *_devnr, char **r);
363 int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid);
364 int fchmod_and_fchown(int fd, mode_t mode, uid_t uid, gid_t gid);
366 int rm_rf_children(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev);
367 int rm_rf_children_dangerous(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev);
368 int rm_rf(const char *path, bool only_dirs, bool delete_root, bool honour_sticky);
369 int rm_rf_dangerous(const char *path, bool only_dirs, bool delete_root, bool honour_sticky);
371 int pipe_eof(int fd);
373 cpu_set_t* cpu_set_malloc(unsigned *ncpus);
375 int status_vprintf(const char *status, bool ellipse, bool ephemeral, const char *format, va_list ap) _printf_(4,0);
376 int status_printf(const char *status, bool ellipse, bool ephemeral, const char *format, ...) _printf_(4,5);
377 int status_welcome(void);
379 int fd_columns(int fd);
380 unsigned columns(void);
381 int fd_lines(int fd);
382 unsigned lines(void);
383 void columns_lines_cache_reset(int _unused_ signum);
387 static inline const char *ansi_highlight(void) {
388 return on_tty() ? ANSI_HIGHLIGHT_ON : "";
391 static inline const char *ansi_highlight_red(void) {
392 return on_tty() ? ANSI_HIGHLIGHT_RED_ON : "";
395 static inline const char *ansi_highlight_green(void) {
396 return on_tty() ? ANSI_HIGHLIGHT_GREEN_ON : "";
399 static inline const char *ansi_highlight_yellow(void) {
400 return on_tty() ? ANSI_HIGHLIGHT_YELLOW_ON : "";
403 static inline const char *ansi_highlight_blue(void) {
404 return on_tty() ? ANSI_HIGHLIGHT_BLUE_ON : "";
407 static inline const char *ansi_highlight_off(void) {
408 return on_tty() ? ANSI_HIGHLIGHT_OFF : "";
411 int running_in_chroot(void);
413 char *ellipsize(const char *s, size_t length, unsigned percent);
415 char *ellipsize_mem(const char *s, size_t old_length, size_t new_length, unsigned percent);
417 int touch(const char *path);
419 char *unquote(const char *s, const char *quotes);
420 char *normalize_env_assignment(const char *s);
422 int wait_for_terminate(pid_t pid, siginfo_t *status);
423 int wait_for_terminate_and_warn(const char *name, pid_t pid);
425 _noreturn_ void freeze(void);
427 bool null_or_empty(struct stat *st) _pure_;
428 int null_or_empty_path(const char *fn);
430 DIR *xopendirat(int dirfd, const char *name, int flags);
432 char *fstab_node_to_udev_node(const char *p);
434 char *resolve_dev_console(char **active);
435 bool tty_is_vc(const char *tty);
436 bool tty_is_vc_resolve(const char *tty);
437 bool tty_is_console(const char *tty) _pure_;
438 int vtnr_from_tty(const char *tty);
439 const char *default_term_for_tty(const char *tty);
441 void execute_directory(const char *directory, DIR *_d, char *argv[]);
443 int kill_and_sigcont(pid_t pid, int sig);
445 bool nulstr_contains(const char*nulstr, const char *needle);
447 bool plymouth_running(void);
449 bool hostname_is_valid(const char *s) _pure_;
450 char* hostname_cleanup(char *s, bool lowercase);
452 char* strshorten(char *s, size_t l);
454 int terminal_vhangup_fd(int fd);
455 int terminal_vhangup(const char *name);
457 int vt_disallocate(const char *name);
459 int copy_file(const char *from, const char *to, int flags);
461 int symlink_atomic(const char *from, const char *to);
463 int fchmod_umask(int fd, mode_t mode);
465 bool display_is_local(const char *display) _pure_;
466 int socket_from_display(const char *display, char **path);
468 int get_user_creds(const char **username, uid_t *uid, gid_t *gid, const char **home, const char **shell);
469 int get_group_creds(const char **groupname, gid_t *gid);
471 int in_gid(gid_t gid);
472 int in_group(const char *name);
474 char* uid_to_name(uid_t uid);
475 char* gid_to_name(gid_t gid);
477 int glob_exists(const char *path);
478 int glob_extend(char ***strv, const char *path);
480 int dirent_ensure_type(DIR *d, struct dirent *de);
482 int in_search_path(const char *path, char **search);
483 int get_files_in_directory(const char *path, char ***list);
485 char *strjoin(const char *x, ...) _sentinel_;
487 bool is_main_thread(void);
489 bool in_charset(const char *s, const char* charset) _pure_;
491 int block_get_whole_disk(dev_t d, dev_t *ret);
493 int file_is_priv_sticky(const char *p);
495 int strdup_or_null(const char *a, char **b);
497 #define NULSTR_FOREACH(i, l) \
498 for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1)
500 #define NULSTR_FOREACH_PAIR(i, j, l) \
501 for ((i) = (l), (j) = strchr((i), 0)+1; (i) && *(i); (i) = strchr((j), 0)+1, (j) = *(i) ? strchr((i), 0)+1 : (i))
503 int ioprio_class_to_string_alloc(int i, char **s);
504 int ioprio_class_from_string(const char *s);
506 const char *sigchld_code_to_string(int i) _const_;
507 int sigchld_code_from_string(const char *s) _pure_;
509 int log_facility_unshifted_to_string_alloc(int i, char **s);
510 int log_facility_unshifted_from_string(const char *s);
512 int log_level_to_string_alloc(int i, char **s);
513 int log_level_from_string(const char *s);
515 int sched_policy_to_string_alloc(int i, char **s);
516 int sched_policy_from_string(const char *s);
518 const char *rlimit_to_string(int i) _const_;
519 int rlimit_from_string(const char *s) _pure_;
521 int ip_tos_to_string_alloc(int i, char **s);
522 int ip_tos_from_string(const char *s);
524 const char *signal_to_string(int i) _const_;
525 int signal_from_string(const char *s) _pure_;
527 int signal_from_string_try_harder(const char *s);
529 extern int saved_argc;
530 extern char **saved_argv;
532 bool kexec_loaded(void);
534 int prot_from_flags(int flags) _const_;
536 char *format_bytes(char *buf, size_t l, off_t t);
538 int fd_wait_for_event(int fd, int event, usec_t timeout);
540 void* memdup(const void *p, size_t l) _alloc_(2);
542 int is_kernel_thread(pid_t pid);
544 int fd_inc_sndbuf(int fd, size_t n);
545 int fd_inc_rcvbuf(int fd, size_t n);
547 int fork_agent(pid_t *pid, const int except[], unsigned n_except, const char *path, ...);
549 int setrlimit_closest(int resource, const struct rlimit *rlim);
551 int getenv_for_pid(pid_t pid, const char *field, char **_value);
553 bool is_valid_documentation_url(const char *url) _pure_;
555 bool in_initrd(void);
557 void warn_melody(void);
559 int get_home_dir(char **ret);
560 int get_shell(char **_ret);
562 static inline void freep(void *p) {
566 #define DEFINE_TRIVIAL_CLEANUP_FUNC(type, func) \
567 static inline void func##p(type *p) { \
571 struct __useless_struct_to_allow_trailing_semicolon__
573 static inline void closep(int *fd) {
575 close_nointr_nofail(*fd);
578 static inline void umaskp(mode_t *u) {
582 static inline void close_pipep(int (*p)[2]) {
586 DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, fclose);
587 DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, pclose);
588 DEFINE_TRIVIAL_CLEANUP_FUNC(DIR*, closedir);
589 DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, endmntent);
591 #define _cleanup_free_ _cleanup_(freep)
592 #define _cleanup_close_ _cleanup_(closep)
593 #define _cleanup_umask_ _cleanup_(umaskp)
594 #define _cleanup_globfree_ _cleanup_(globfree)
595 #define _cleanup_fclose_ _cleanup_(fclosep)
596 #define _cleanup_pclose_ _cleanup_(pclosep)
597 #define _cleanup_closedir_ _cleanup_(closedirp)
598 #define _cleanup_endmntent_ _cleanup_(endmntentp)
599 #define _cleanup_close_pipe_ _cleanup_(close_pipep)
601 _malloc_ _alloc_(1, 2) static inline void *malloc_multiply(size_t a, size_t b) {
602 if (_unlikely_(b == 0 || a > ((size_t) -1) / b))
605 return malloc(a * b);
608 _alloc_(2, 3) static inline void *memdup_multiply(const void *p, size_t a, size_t b) {
609 if (_unlikely_(b == 0 || a > ((size_t) -1) / b))
612 return memdup(p, a * b);
615 bool filename_is_safe(const char *p) _pure_;
616 bool path_is_safe(const char *p) _pure_;
617 bool string_is_safe(const char *p) _pure_;
618 bool string_has_cc(const char *p) _pure_;
620 void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size,
621 int (*compar) (const void *, const void *, void *),
624 bool is_locale_utf8(void);
626 typedef enum DrawSpecialChar {
631 DRAW_TRIANGULAR_BULLET,
633 _DRAW_SPECIAL_CHAR_MAX
635 const char *draw_special_char(DrawSpecialChar ch);
637 char *strreplace(const char *text, const char *old_string, const char *new_string);
639 char *strip_tab_ansi(char **p, size_t *l);
641 int on_ac_power(void);
643 int search_and_fopen(const char *path, const char *mode, const char **search, FILE **_f);
644 int search_and_fopen_nulstr(const char *path, const char *mode, const char *search, FILE **_f);
646 #define FOREACH_LINE(line, f, on_error) \
648 if (!fgets(line, sizeof(line), f)) { \
655 #define FOREACH_DIRENT(de, d, on_error) \
656 for (errno = 0, de = readdir(d);; errno = 0, de = readdir(d)) \
662 } else if (ignore_file((de)->d_name)) \
666 static inline void *mempset(void *s, int c, size_t n) {
668 return (uint8_t*)s + n;
671 char *hexmem(const void *p, size_t l);
672 void *unhexmem(const char *p, size_t l);
674 char *strextend(char **x, ...) _sentinel_;
675 char *strrep(const char *s, unsigned n);
677 void* greedy_realloc(void **p, size_t *allocated, size_t need);
678 void* greedy_realloc0(void **p, size_t *allocated, size_t need);
679 #define GREEDY_REALLOC(array, allocated, need) \
680 greedy_realloc((void**) &(array), &(allocated), sizeof((array)[0]) * (need))
681 #define GREEDY_REALLOC0(array, allocated, need) \
682 greedy_realloc0((void**) &(array), &(allocated), sizeof((array)[0]) * (need))
684 static inline void _reset_errno_(int *saved_errno) {
685 errno = *saved_errno;
688 #define PROTECT_ERRNO _cleanup_(_reset_errno_) __attribute__((unused)) int _saved_errno_ = errno
690 struct _umask_struct_ {
695 static inline void _reset_umask_(struct _umask_struct_ *s) {
699 #define RUN_WITH_UMASK(mask) \
700 for (_cleanup_(_reset_umask_) struct _umask_struct_ _saved_umask_ = { umask(mask), false }; \
701 !_saved_umask_.quit ; \
702 _saved_umask_.quit = true)
704 static inline unsigned u64log2(uint64_t n) {
705 return (n > 1) ? __builtin_clzll(n) ^ 63U : 0;
708 static inline bool logind_running(void) {
709 return access("/run/systemd/seats/", F_OK) >= 0;
712 #define DECIMAL_STR_WIDTH(x) \
714 typeof(x) _x_ = (x); \
721 int unlink_noerrno(const char *path);
727 _new_ = alloca(_len_); \
728 (void *) memset(_new_, 0, _len_); \
731 #define strappenda(a, b) \
733 const char *_a_ = (a), *_b_ = (b); \
738 _c_ = alloca(_x_ + _y_ + 1); \
739 strcpy(stpcpy(_c_, _a_), _b_); \
743 #define procfs_file_alloca(pid, field) \
745 pid_t _pid_ = (pid); \
747 _r_ = alloca(sizeof("/proc/") -1 + DECIMAL_STR_MAX(pid_t) + 1 + sizeof(field)); \
748 sprintf(_r_, "/proc/%lu/" field, (unsigned long) _pid_); \
752 struct _locale_struct_ {
753 locale_t saved_locale;
758 static inline void _reset_locale_(struct _locale_struct_ *s) {
760 if (s->saved_locale != (locale_t) 0)
761 uselocale(s->saved_locale);
762 if (s->new_locale != (locale_t) 0)
763 freelocale(s->new_locale);
766 #define RUN_WITH_LOCALE(mask, loc) \
767 for (_cleanup_(_reset_locale_) struct _locale_struct_ _saved_locale_ = { (locale_t) 0, (locale_t) 0, false }; \
769 if (!_saved_locale_.quit) { \
771 _saved_locale_.new_locale = newlocale((mask), (loc), (locale_t) 0); \
772 if (_saved_locale_.new_locale != (locale_t) 0) \
773 _saved_locale_.saved_locale = uselocale(_saved_locale_.new_locale); \
775 !_saved_locale_.quit; }) ; \
776 _saved_locale_.quit = true)
778 bool id128_is_valid(const char *s) _pure_;
779 void parse_user_at_host(char *arg, char **user, char **host);
781 int split_pair(const char *s, const char *sep, char **l, char **r);
783 int shall_restore_state(void);
786 * Normal qsort requires base to be nonnull. Here were require
787 * that only if nmemb > 0.
789 static inline void qsort_safe(void *base, size_t nmemb, size_t size,
790 int (*compar)(const void *, const void *)) {
793 qsort(base, nmemb, size, compar);
797 int proc_cmdline(char **ret);
799 int container_get_leader(const char *machine, pid_t *pid);
801 int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *root_fd);
802 int namespace_enter(int pidns_fd, int mntns_fd, int root_fd);