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>
43 #include <sys/socket.h>
46 #include "time-util.h"
48 /* What is interpreted as whitespace? */
49 #define WHITESPACE " \t\n\r"
50 #define NEWLINE "\n\r"
54 #define FORMAT_BYTES_MAX 8
56 #define ANSI_HIGHLIGHT_ON "\x1B[1;39m"
57 #define ANSI_RED_ON "\x1B[31m"
58 #define ANSI_HIGHLIGHT_RED_ON "\x1B[1;31m"
59 #define ANSI_GREEN_ON "\x1B[32m"
60 #define ANSI_HIGHLIGHT_GREEN_ON "\x1B[1;32m"
61 #define ANSI_HIGHLIGHT_YELLOW_ON "\x1B[1;33m"
62 #define ANSI_HIGHLIGHT_BLUE_ON "\x1B[1;34m"
63 #define ANSI_HIGHLIGHT_OFF "\x1B[0m"
64 #define ANSI_ERASE_TO_END_OF_LINE "\x1B[K"
66 size_t page_size(void);
67 #define PAGE_ALIGN(l) ALIGN_TO((l), page_size())
69 #define streq(a,b) (strcmp((a),(b)) == 0)
70 #define strneq(a, b, n) (strncmp((a), (b), (n)) == 0)
71 #define strcaseeq(a,b) (strcasecmp((a),(b)) == 0)
72 #define strncaseeq(a, b, n) (strncasecmp((a), (b), (n)) == 0)
74 bool streq_ptr(const char *a, const char *b) _pure_;
76 #define new(t, n) ((t*) malloc_multiply(sizeof(t), (n)))
78 #define new0(t, n) ((t*) calloc((n), sizeof(t)))
80 #define newa(t, n) ((t*) alloca(sizeof(t)*(n)))
82 #define newdup(t, p, n) ((t*) memdup_multiply(p, sizeof(t), (n)))
84 #define malloc0(n) (calloc((n), 1))
86 static inline const char* yes_no(bool b) {
87 return b ? "yes" : "no";
90 static inline const char* true_false(bool b) {
91 return b ? "true" : "false";
94 static inline const char* strempty(const char *s) {
98 static inline const char* strnull(const char *s) {
99 return s ? s : "(null)";
102 static inline const char *strna(const char *s) {
103 return s ? s : "n/a";
106 static inline bool isempty(const char *p) {
110 static inline const char *startswith(const char *s, const char *prefix) {
111 if (strncmp(s, prefix, strlen(prefix)) == 0)
112 return s + strlen(prefix);
116 static inline const char *startswith_no_case(const char *s, const char *prefix) {
117 if (strncasecmp(s, prefix, strlen(prefix)) == 0)
118 return s + strlen(prefix);
122 char *endswith(const char *s, const char *postfix) _pure_;
124 bool first_word(const char *s, const char *word) _pure_;
126 int close_nointr(int fd);
127 void close_nointr_nofail(int fd);
128 void close_many(const int fds[], unsigned n_fd);
130 int parse_boolean(const char *v) _pure_;
131 int parse_bytes(const char *t, off_t *bytes);
132 int parse_pid(const char *s, pid_t* ret_pid);
133 int parse_uid(const char *s, uid_t* ret_uid);
134 #define parse_gid(s, ret_uid) parse_uid(s, ret_uid)
136 int safe_atou(const char *s, unsigned *ret_u);
137 int safe_atoi(const char *s, int *ret_i);
139 int safe_atollu(const char *s, unsigned long long *ret_u);
140 int safe_atolli(const char *s, long long int *ret_i);
142 int safe_atod(const char *s, double *ret_d);
145 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
146 assert_cc(sizeof(unsigned long) == sizeof(unsigned));
147 return safe_atou(s, (unsigned*) ret_u);
149 static inline int safe_atoli(const char *s, long int *ret_u) {
150 assert_cc(sizeof(long int) == sizeof(int));
151 return safe_atoi(s, (int*) ret_u);
154 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
155 assert_cc(sizeof(unsigned long) == sizeof(unsigned long long));
156 return safe_atollu(s, (unsigned long long*) ret_u);
158 static inline int safe_atoli(const char *s, long int *ret_u) {
159 assert_cc(sizeof(long int) == sizeof(long long int));
160 return safe_atolli(s, (long long int*) ret_u);
164 static inline int safe_atou32(const char *s, uint32_t *ret_u) {
165 assert_cc(sizeof(uint32_t) == sizeof(unsigned));
166 return safe_atou(s, (unsigned*) ret_u);
169 static inline int safe_atoi32(const char *s, int32_t *ret_i) {
170 assert_cc(sizeof(int32_t) == sizeof(int));
171 return safe_atoi(s, (int*) ret_i);
174 static inline int safe_atou64(const char *s, uint64_t *ret_u) {
175 assert_cc(sizeof(uint64_t) == sizeof(unsigned long long));
176 return safe_atollu(s, (unsigned long long*) ret_u);
179 static inline int safe_atoi64(const char *s, int64_t *ret_i) {
180 assert_cc(sizeof(int64_t) == sizeof(long long int));
181 return safe_atolli(s, (long long int*) ret_i);
184 char *split(const char *c, size_t *l, const char *separator, char **state);
185 char *split_quoted(const char *c, size_t *l, char **state);
187 #define FOREACH_WORD(word, length, s, state) \
188 for ((state) = NULL, (word) = split((s), &(length), WHITESPACE, &(state)); (word); (word) = split((s), &(length), WHITESPACE, &(state)))
190 #define FOREACH_WORD_SEPARATOR(word, length, s, separator, state) \
191 for ((state) = NULL, (word) = split((s), &(length), (separator), &(state)); (word); (word) = split((s), &(length), (separator), &(state)))
193 #define FOREACH_WORD_QUOTED(word, length, s, state) \
194 for ((state) = NULL, (word) = split_quoted((s), &(length), &(state)); (word); (word) = split_quoted((s), &(length), &(state)))
196 pid_t get_parent_of_pid(pid_t pid, pid_t *ppid);
197 int get_starttime_of_pid(pid_t pid, unsigned long long *st);
199 char *strappend(const char *s, const char *suffix);
200 char *strnappend(const char *s, const char *suffix, size_t length);
202 char *replace_env(const char *format, char **env);
203 char **replace_env_argv(char **argv, char **env);
205 int readlink_malloc(const char *p, char **r);
206 int readlink_and_make_absolute(const char *p, char **r);
207 int readlink_and_canonicalize(const char *p, char **r);
209 int reset_all_signal_handlers(void);
211 char *strstrip(char *s);
212 char *delete_chars(char *s, const char *bad);
213 char *truncate_nl(char *s);
215 char *file_in_same_dir(const char *path, const char *filename);
217 int rmdir_parents(const char *path, const char *stop);
219 int get_process_comm(pid_t pid, char **name);
220 int get_process_cmdline(pid_t pid, size_t max_length, bool comm_fallback, char **line);
221 int get_process_exe(pid_t pid, char **name);
222 int get_process_uid(pid_t pid, uid_t *uid);
223 int get_process_gid(pid_t pid, gid_t *gid);
224 int get_process_capeff(pid_t pid, char **capeff);
226 char hexchar(int x) _const_;
227 int unhexchar(char c) _const_;
228 char octchar(int x) _const_;
229 int unoctchar(char c) _const_;
230 char decchar(int x) _const_;
231 int undecchar(char c) _const_;
233 char *cescape(const char *s);
234 char *cunescape(const char *s);
235 char *cunescape_length(const char *s, size_t length);
236 char *cunescape_length_with_prefix(const char *s, size_t length, const char *prefix);
238 char *xescape(const char *s, const char *bad);
240 char *ascii_strlower(char *path);
242 bool dirent_is_file(const struct dirent *de) _pure_;
243 bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix) _pure_;
245 bool ignore_file(const char *filename) _pure_;
247 bool chars_intersect(const char *a, const char *b) _pure_;
249 int make_stdio(int fd);
250 int make_null_stdio(void);
251 int make_console_stdio(void);
253 void random_bytes(void *p, size_t n);
255 static inline uint64_t random_u64(void) {
257 random_bytes(&u, sizeof(u));
261 static inline uint32_t random_u32(void) {
263 random_bytes(&u, sizeof(u));
267 /* For basic lookup tables with strictly enumerated entries */
268 #define __DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \
269 scope const char *name##_to_string(type i) { \
270 if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \
272 return name##_table[i]; \
274 scope type name##_from_string(const char *s) { \
277 for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \
278 if (name##_table[i] && \
279 streq(name##_table[i], s)) \
283 struct __useless_struct_to_allow_trailing_semicolon__
285 #define DEFINE_STRING_TABLE_LOOKUP(name,type) __DEFINE_STRING_TABLE_LOOKUP(name,type,)
286 #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP(name,type) __DEFINE_STRING_TABLE_LOOKUP(name,type,static)
288 /* For string conversions where numbers are also acceptable */
289 #define DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(name,type,max) \
290 int name##_to_string_alloc(type i, char **str) { \
293 if (i < 0 || i > max) \
295 if (i < (type) ELEMENTSOF(name##_table)) { \
296 s = strdup(name##_table[i]); \
300 r = asprintf(&s, "%u", i); \
307 type name##_from_string(const char *s) { \
311 for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \
312 if (name##_table[i] && \
313 streq(name##_table[i], s)) \
315 if (safe_atou(s, &u) >= 0 && u <= max) \
319 struct __useless_struct_to_allow_trailing_semicolon__
321 int fd_nonblock(int fd, bool nonblock);
322 int fd_cloexec(int fd, bool cloexec);
324 int close_all_fds(const int except[], unsigned n_except);
326 bool fstype_is_network(const char *fstype);
330 int read_one_char(FILE *f, char *ret, usec_t timeout, bool *need_nl);
331 int ask(char *ret, const char *replies, const char *text, ...) _printf_(3, 4);
333 int reset_terminal_fd(int fd, bool switch_to_text);
334 int reset_terminal(const char *name);
336 int open_terminal(const char *name, int mode);
337 int acquire_terminal(const char *name, bool fail, bool force, bool ignore_tiocstty_eperm, usec_t timeout);
338 int release_terminal(void);
340 int flush_fd(int fd);
342 int ignore_signals(int sig, ...);
343 int default_signals(int sig, ...);
344 int sigaction_many(const struct sigaction *sa, ...);
346 int close_pipe(int p[]);
347 int fopen_temporary(const char *path, FILE **_f, char **_temp_path);
349 ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll);
350 ssize_t loop_write(int fd, const void *buf, size_t nbytes, bool do_poll);
352 bool is_device_path(const char *path);
354 int dir_is_empty(const char *path);
355 char* dirname_malloc(const char *path);
357 void rename_process(const char name[8]);
359 void sigset_add_many(sigset_t *ss, ...);
361 bool hostname_is_set(void);
363 char* gethostname_malloc(void);
364 char* getlogname_malloc(void);
365 char* getusername_malloc(void);
367 int getttyname_malloc(int fd, char **r);
368 int getttyname_harder(int fd, char **r);
370 int get_ctty_devnr(pid_t pid, dev_t *d);
371 int get_ctty(pid_t, dev_t *_devnr, char **r);
373 int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid);
374 int fchmod_and_fchown(int fd, mode_t mode, uid_t uid, gid_t gid);
376 int rm_rf_children(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev);
377 int rm_rf_children_dangerous(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev);
378 int rm_rf(const char *path, bool only_dirs, bool delete_root, bool honour_sticky);
379 int rm_rf_dangerous(const char *path, bool only_dirs, bool delete_root, bool honour_sticky);
381 int pipe_eof(int fd);
383 cpu_set_t* cpu_set_malloc(unsigned *ncpus);
385 int status_vprintf(const char *status, bool ellipse, bool ephemeral, const char *format, va_list ap) _printf_(4,0);
386 int status_printf(const char *status, bool ellipse, bool ephemeral, const char *format, ...) _printf_(4,5);
387 int status_welcome(void);
389 int fd_columns(int fd);
390 unsigned columns(void);
391 int fd_lines(int fd);
392 unsigned lines(void);
393 void columns_lines_cache_reset(int _unused_ signum);
397 static inline const char *ansi_highlight(void) {
398 return on_tty() ? ANSI_HIGHLIGHT_ON : "";
401 static inline const char *ansi_highlight_red(void) {
402 return on_tty() ? ANSI_HIGHLIGHT_RED_ON : "";
405 static inline const char *ansi_highlight_green(void) {
406 return on_tty() ? ANSI_HIGHLIGHT_GREEN_ON : "";
409 static inline const char *ansi_highlight_yellow(void) {
410 return on_tty() ? ANSI_HIGHLIGHT_YELLOW_ON : "";
413 static inline const char *ansi_highlight_blue(void) {
414 return on_tty() ? ANSI_HIGHLIGHT_BLUE_ON : "";
417 static inline const char *ansi_highlight_off(void) {
418 return on_tty() ? ANSI_HIGHLIGHT_OFF : "";
421 int running_in_chroot(void);
423 char *ellipsize(const char *s, size_t length, unsigned percent);
425 char *ellipsize_mem(const char *s, size_t old_length, size_t new_length, unsigned percent);
427 int touch(const char *path);
429 char *unquote(const char *s, const char *quotes);
430 char *normalize_env_assignment(const char *s);
432 int wait_for_terminate(pid_t pid, siginfo_t *status);
433 int wait_for_terminate_and_warn(const char *name, pid_t pid);
435 noreturn void freeze(void);
437 bool null_or_empty(struct stat *st) _pure_;
438 int null_or_empty_path(const char *fn);
440 DIR *xopendirat(int dirfd, const char *name, int flags);
442 char *fstab_node_to_udev_node(const char *p);
444 char *resolve_dev_console(char **active);
445 bool tty_is_vc(const char *tty);
446 bool tty_is_vc_resolve(const char *tty);
447 bool tty_is_console(const char *tty) _pure_;
448 int vtnr_from_tty(const char *tty);
449 const char *default_term_for_tty(const char *tty);
451 void execute_directory(const char *directory, DIR *_d, char *argv[]);
453 int kill_and_sigcont(pid_t pid, int sig);
455 bool nulstr_contains(const char*nulstr, const char *needle);
457 bool plymouth_running(void);
459 bool hostname_is_valid(const char *s) _pure_;
460 char* hostname_cleanup(char *s, bool lowercase);
462 char* strshorten(char *s, size_t l);
464 int terminal_vhangup_fd(int fd);
465 int terminal_vhangup(const char *name);
467 int vt_disallocate(const char *name);
469 int copy_file(const char *from, const char *to, int flags);
471 int symlink_atomic(const char *from, const char *to);
473 int fchmod_umask(int fd, mode_t mode);
475 bool display_is_local(const char *display) _pure_;
476 int socket_from_display(const char *display, char **path);
478 int get_user_creds(const char **username, uid_t *uid, gid_t *gid, const char **home, const char **shell);
479 int get_group_creds(const char **groupname, gid_t *gid);
481 int in_gid(gid_t gid);
482 int in_group(const char *name);
484 char* uid_to_name(uid_t uid);
485 char* gid_to_name(gid_t gid);
487 int glob_exists(const char *path);
488 int glob_extend(char ***strv, const char *path);
490 int dirent_ensure_type(DIR *d, struct dirent *de);
492 int in_search_path(const char *path, char **search);
493 int get_files_in_directory(const char *path, char ***list);
495 char *strjoin(const char *x, ...) _sentinel_;
497 bool is_main_thread(void);
499 bool in_charset(const char *s, const char* charset) _pure_;
501 int block_get_whole_disk(dev_t d, dev_t *ret);
503 int file_is_priv_sticky(const char *p);
505 int strdup_or_null(const char *a, char **b);
507 #define NULSTR_FOREACH(i, l) \
508 for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1)
510 #define NULSTR_FOREACH_PAIR(i, j, l) \
511 for ((i) = (l), (j) = strchr((i), 0)+1; (i) && *(i); (i) = strchr((j), 0)+1, (j) = *(i) ? strchr((i), 0)+1 : (i))
513 int ioprio_class_to_string_alloc(int i, char **s);
514 int ioprio_class_from_string(const char *s);
516 const char *sigchld_code_to_string(int i) _const_;
517 int sigchld_code_from_string(const char *s) _pure_;
519 int log_facility_unshifted_to_string_alloc(int i, char **s);
520 int log_facility_unshifted_from_string(const char *s);
522 int log_level_to_string_alloc(int i, char **s);
523 int log_level_from_string(const char *s);
525 int sched_policy_to_string_alloc(int i, char **s);
526 int sched_policy_from_string(const char *s);
528 const char *rlimit_to_string(int i) _const_;
529 int rlimit_from_string(const char *s) _pure_;
531 int ip_tos_to_string_alloc(int i, char **s);
532 int ip_tos_from_string(const char *s);
534 const char *signal_to_string(int i) _const_;
535 int signal_from_string(const char *s) _pure_;
537 int signal_from_string_try_harder(const char *s);
539 extern int saved_argc;
540 extern char **saved_argv;
542 bool kexec_loaded(void);
544 int prot_from_flags(int flags) _const_;
546 char *format_bytes(char *buf, size_t l, off_t t);
548 int fd_wait_for_event(int fd, int event, usec_t timeout);
550 void* memdup(const void *p, size_t l) _alloc_(2);
552 int is_kernel_thread(pid_t pid);
554 int fd_inc_sndbuf(int fd, size_t n);
555 int fd_inc_rcvbuf(int fd, size_t n);
557 int fork_agent(pid_t *pid, const int except[], unsigned n_except, const char *path, ...);
559 int setrlimit_closest(int resource, const struct rlimit *rlim);
561 int getenv_for_pid(pid_t pid, const char *field, char **_value);
563 bool is_valid_documentation_url(const char *url) _pure_;
565 bool in_initrd(void);
567 void warn_melody(void);
569 int get_home_dir(char **ret);
570 int get_shell(char **_ret);
572 static inline void freep(void *p) {
576 #define DEFINE_TRIVIAL_CLEANUP_FUNC(type, func) \
577 static inline void func##p(type *p) { \
581 struct __useless_struct_to_allow_trailing_semicolon__
583 static inline void closep(int *fd) {
585 close_nointr_nofail(*fd);
588 static inline void umaskp(mode_t *u) {
592 static inline void close_pipep(int (*p)[2]) {
596 DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, fclose);
597 DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, pclose);
598 DEFINE_TRIVIAL_CLEANUP_FUNC(DIR*, closedir);
599 DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, endmntent);
601 #define _cleanup_free_ _cleanup_(freep)
602 #define _cleanup_close_ _cleanup_(closep)
603 #define _cleanup_umask_ _cleanup_(umaskp)
604 #define _cleanup_globfree_ _cleanup_(globfree)
605 #define _cleanup_fclose_ _cleanup_(fclosep)
606 #define _cleanup_pclose_ _cleanup_(pclosep)
607 #define _cleanup_closedir_ _cleanup_(closedirp)
608 #define _cleanup_endmntent_ _cleanup_(endmntentp)
609 #define _cleanup_close_pipe_ _cleanup_(close_pipep)
611 _malloc_ _alloc_(1, 2) static inline void *malloc_multiply(size_t a, size_t b) {
612 if (_unlikely_(b == 0 || a > ((size_t) -1) / b))
615 return malloc(a * b);
618 _alloc_(2, 3) static inline void *memdup_multiply(const void *p, size_t a, size_t b) {
619 if (_unlikely_(b == 0 || a > ((size_t) -1) / b))
622 return memdup(p, a * b);
625 bool filename_is_safe(const char *p) _pure_;
626 bool path_is_safe(const char *p) _pure_;
627 bool string_is_safe(const char *p) _pure_;
628 bool string_has_cc(const char *p) _pure_;
630 void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size,
631 int (*compar) (const void *, const void *, void *),
634 bool is_locale_utf8(void);
636 typedef enum DrawSpecialChar {
641 DRAW_TRIANGULAR_BULLET,
643 _DRAW_SPECIAL_CHAR_MAX
645 const char *draw_special_char(DrawSpecialChar ch);
647 char *strreplace(const char *text, const char *old_string, const char *new_string);
649 char *strip_tab_ansi(char **p, size_t *l);
651 int on_ac_power(void);
653 int search_and_fopen(const char *path, const char *mode, const char **search, FILE **_f);
654 int search_and_fopen_nulstr(const char *path, const char *mode, const char *search, FILE **_f);
656 #define FOREACH_LINE(line, f, on_error) \
658 if (!fgets(line, sizeof(line), f)) { \
665 #define FOREACH_DIRENT(de, d, on_error) \
666 for (errno = 0, de = readdir(d);; errno = 0, de = readdir(d)) \
672 } else if (ignore_file((de)->d_name)) \
676 static inline void *mempset(void *s, int c, size_t n) {
678 return (uint8_t*)s + n;
681 char *hexmem(const void *p, size_t l);
682 void *unhexmem(const char *p, size_t l);
684 char *strextend(char **x, ...) _sentinel_;
685 char *strrep(const char *s, unsigned n);
687 void* greedy_realloc(void **p, size_t *allocated, size_t need);
688 void* greedy_realloc0(void **p, size_t *allocated, size_t need);
689 #define GREEDY_REALLOC(array, allocated, need) \
690 greedy_realloc((void**) &(array), &(allocated), sizeof((array)[0]) * (need))
691 #define GREEDY_REALLOC0(array, allocated, need) \
692 greedy_realloc0((void**) &(array), &(allocated), sizeof((array)[0]) * (need))
694 static inline void _reset_errno_(int *saved_errno) {
695 errno = *saved_errno;
698 #define PROTECT_ERRNO _cleanup_(_reset_errno_) __attribute__((unused)) int _saved_errno_ = errno
700 struct _umask_struct_ {
705 static inline void _reset_umask_(struct _umask_struct_ *s) {
709 #define RUN_WITH_UMASK(mask) \
710 for (_cleanup_(_reset_umask_) struct _umask_struct_ _saved_umask_ = { umask(mask), false }; \
711 !_saved_umask_.quit ; \
712 _saved_umask_.quit = true)
714 static inline unsigned u64log2(uint64_t n) {
715 return (n > 1) ? (unsigned) __builtin_clzll(n) ^ 63U : 0;
718 static inline bool logind_running(void) {
719 return access("/run/systemd/seats/", F_OK) >= 0;
722 #define DECIMAL_STR_WIDTH(x) \
724 typeof(x) _x_ = (x); \
731 int unlink_noerrno(const char *path);
737 _new_ = alloca(_len_); \
738 (void *) memset(_new_, 0, _len_); \
741 #define strappenda(a, b) \
743 const char *_a_ = (a), *_b_ = (b); \
748 _c_ = alloca(_x_ + _y_ + 1); \
749 strcpy(stpcpy(_c_, _a_), _b_); \
753 #define procfs_file_alloca(pid, field) \
755 pid_t _pid_ = (pid); \
757 _r_ = alloca(sizeof("/proc/") -1 + DECIMAL_STR_MAX(pid_t) + 1 + sizeof(field)); \
758 sprintf(_r_, "/proc/%lu/" field, (unsigned long) _pid_); \
762 struct _locale_struct_ {
763 locale_t saved_locale;
768 static inline void _reset_locale_(struct _locale_struct_ *s) {
770 if (s->saved_locale != (locale_t) 0)
771 uselocale(s->saved_locale);
772 if (s->new_locale != (locale_t) 0)
773 freelocale(s->new_locale);
776 #define RUN_WITH_LOCALE(mask, loc) \
777 for (_cleanup_(_reset_locale_) struct _locale_struct_ _saved_locale_ = { (locale_t) 0, (locale_t) 0, false }; \
779 if (!_saved_locale_.quit) { \
781 _saved_locale_.new_locale = newlocale((mask), (loc), (locale_t) 0); \
782 if (_saved_locale_.new_locale != (locale_t) 0) \
783 _saved_locale_.saved_locale = uselocale(_saved_locale_.new_locale); \
785 !_saved_locale_.quit; }) ; \
786 _saved_locale_.quit = true)
788 bool id128_is_valid(const char *s) _pure_;
789 void parse_user_at_host(char *arg, char **user, char **host);
791 int split_pair(const char *s, const char *sep, char **l, char **r);
793 int shall_restore_state(void);
796 * Normal qsort requires base to be nonnull. Here were require
797 * that only if nmemb > 0.
799 static inline void qsort_safe(void *base, size_t nmemb, size_t size,
800 int (*compar)(const void *, const void *)) {
803 qsort(base, nmemb, size, compar);
807 int proc_cmdline(char **ret);
809 int container_get_leader(const char *machine, pid_t *pid);
811 int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *root_fd);
812 int namespace_enter(int pidns_fd, int mntns_fd, int root_fd);
814 bool pid_valid(pid_t pid);
816 int getpeercred(int fd, struct ucred *ucred);
817 int getpeersec(int fd, char **ret);