#pragma once

#include <alloca.h>

#include <inttypes.h>

#include <time.h>

#include <sys/time.h>

#include <stdarg.h>

#include <stdbool.h>

#include <stdlib.h>

#include <stdio.h>

#include <signal.h>

#include <sched.h>

#include <limits.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <dirent.h>

#include <sys/resource.h>

#include <stddef.h>

#include <unistd.h>

#include <locale.h>

#include <mntent.h>

#include <sys/socket.h>

#if SIZEOF_PID_T == 4

# define PID_FMT "%" PRIu32

#elif SIZEOF_PID_T == 2

# define PID_FMT "%" PRIu16

#else

# error Unknown pid_t size

#endif

#if SIZEOF_UID_T == 4

# define UID_FMT "%" PRIu32

#elif SIZEOF_UID_T == 2

# define UID_FMT "%" PRIu16

#else

# error Unknown uid_t size

#endif

#include "macro.h"

#include "time-util.h"

#define WHITESPACE " \t\n\r"

#define NEWLINE "\n\r"

#define QUOTES "\"\'"

#define COMMENTS "#;"

#define GLOB_CHARS "*?["

#define FORMAT_BYTES_MAX 8

#define ANSI_HIGHLIGHT_ON "\x1B[1;39m"

#define ANSI_RED_ON "\x1B[31m"

#define ANSI_HIGHLIGHT_RED_ON "\x1B[1;31m"

#define ANSI_GREEN_ON "\x1B[32m"

#define ANSI_HIGHLIGHT_GREEN_ON "\x1B[1;32m"

#define ANSI_HIGHLIGHT_YELLOW_ON "\x1B[1;33m"

#define ANSI_HIGHLIGHT_BLUE_ON "\x1B[1;34m"

#define ANSI_HIGHLIGHT_OFF "\x1B[0m"

#define ANSI_ERASE_TO_END_OF_LINE "\x1B[K"

size_t page_size(void);

#define PAGE_ALIGN(l) ALIGN_TO((l), page_size())

#define streq(a,b) (strcmp((a),(b)) == 0)

#define strneq(a, b, n) (strncmp((a), (b), (n)) == 0)

#define strcaseeq(a,b) (strcasecmp((a),(b)) == 0)

#define strncaseeq(a, b, n) (strncasecmp((a), (b), (n)) == 0)

bool streq_ptr(const char *a, const char *b) _pure_;

#define new(t, n) ((t*) malloc_multiply(sizeof(t), (n)))

#define new0(t, n) ((t*) calloc((n), sizeof(t)))

#define newa(t, n) ((t*) alloca(sizeof(t)*(n)))

#define newdup(t, p, n) ((t*) memdup_multiply(p, sizeof(t), (n)))

#define malloc0(n) (calloc((n), 1))

static inline const char* yes_no(bool b) {

return b ? "yes" : "no";

}

static inline const char* true_false(bool b) {

return b ? "true" : "false";

}

static inline const char* strempty(const char *s) {

return s ? s : "";

}

static inline const char* strnull(const char *s) {

return s ? s : "(null)";

}

static inline const char *strna(const char *s) {

return s ? s : "n/a";

}

static inline bool isempty(const char *p) {

return !p || !p[0];

}

static inline const char *startswith(const char *s, const char *prefix) {

if (strncmp(s, prefix, strlen(prefix)) == 0)

return s + strlen(prefix);

return NULL;

}

static inline const char *startswith_no_case(const char *s, const char *prefix) {

if (strncasecmp(s, prefix, strlen(prefix)) == 0)

return s + strlen(prefix);

return NULL;

}

char *endswith(const char *s, const char *postfix) _pure_;

bool first_word(const char *s, const char *word) _pure_;

int close_nointr(int fd);

void close_nointr_nofail(int fd);

void close_many(const int fds[], unsigned n_fd);

int parse_boolean(const char *v) _pure_;

int parse_bytes(const char *t, off_t *bytes);

int parse_pid(const char *s, pid_t* ret_pid);

int parse_uid(const char *s, uid_t* ret_uid);

#define parse_gid(s, ret_uid) parse_uid(s, ret_uid)

int safe_atou(const char *s, unsigned *ret_u);

int safe_atoi(const char *s, int *ret_i);

int safe_atollu(const char *s, unsigned long long *ret_u);

int safe_atolli(const char *s, long long int *ret_i);

int safe_atod(const char *s, double *ret_d);

#if __WORDSIZE == 32

static inline int safe_atolu(const char *s, unsigned long *ret_u) {

assert_cc(sizeof(unsigned long) == sizeof(unsigned));

return safe_atou(s, (unsigned*) ret_u);

}

static inline int safe_atoli(const char *s, long int *ret_u) {

assert_cc(sizeof(long int) == sizeof(int));

return safe_atoi(s, (int*) ret_u);

}

#else

static inline int safe_atolu(const char *s, unsigned long *ret_u) {

assert_cc(sizeof(unsigned long) == sizeof(unsigned long long));

return safe_atollu(s, (unsigned long long*) ret_u);

}

static inline int safe_atoli(const char *s, long int *ret_u) {

assert_cc(sizeof(long int) == sizeof(long long int));

return safe_atolli(s, (long long int*) ret_u);

}

#endif

static inline int safe_atou32(const char *s, uint32_t *ret_u) {

assert_cc(sizeof(uint32_t) == sizeof(unsigned));

return safe_atou(s, (unsigned*) ret_u);

}

static inline int safe_atoi32(const char *s, int32_t *ret_i) {

assert_cc(sizeof(int32_t) == sizeof(int));

return safe_atoi(s, (int*) ret_i);

}

static inline int safe_atou64(const char *s, uint64_t *ret_u) {

assert_cc(sizeof(uint64_t) == sizeof(unsigned long long));

return safe_atollu(s, (unsigned long long*) ret_u);

}

static inline int safe_atoi64(const char *s, int64_t *ret_i) {

assert_cc(sizeof(int64_t) == sizeof(long long int));

return safe_atolli(s, (long long int*) ret_i);

}

char *split(const char *c, size_t *l, const char *separator, bool quoted, char **state);

#define FOREACH_WORD(word, length, s, state) \

_FOREACH_WORD(word, length, s, WHITESPACE, false, state)

#define FOREACH_WORD_SEPARATOR(word, length, s, separator, state) \

_FOREACH_WORD(word, length, s, separator, false, state)

#define FOREACH_WORD_QUOTED(word, length, s, state) \

_FOREACH_WORD(word, length, s, WHITESPACE, true, state)

#define FOREACH_WORD_SEPARATOR_QUOTED(word, length, s, separator, state) \

_FOREACH_WORD(word, length, s, separator, true, state)

#define _FOREACH_WORD(word, length, s, separator, quoted, state) \

for ((state) = NULL, (word) = split((s), &(length), (separator), (quoted), &(state)); (word); (word) = split((s), &(length), (separator), (quoted), &(state)))

pid_t get_parent_of_pid(pid_t pid, pid_t *ppid);

int get_starttime_of_pid(pid_t pid, unsigned long long *st);

char *strappend(const char *s, const char *suffix);

char *strnappend(const char *s, const char *suffix, size_t length);

char *replace_env(const char *format, char **env);

char **replace_env_argv(char **argv, char **env);

int readlink_malloc(const char *p, char **r);

int readlink_and_make_absolute(const char *p, char **r);

int readlink_and_canonicalize(const char *p, char **r);

int reset_all_signal_handlers(void);

char *strstrip(char *s);

char *delete_chars(char *s, const char *bad);

char *truncate_nl(char *s);

char *file_in_same_dir(const char *path, const char *filename);

int rmdir_parents(const char *path, const char *stop);

int get_process_state(pid_t pid);

int get_process_comm(pid_t pid, char **name);

int get_process_cmdline(pid_t pid, size_t max_length, bool comm_fallback, char **line);

int get_process_exe(pid_t pid, char **name);

int get_process_uid(pid_t pid, uid_t *uid);

int get_process_gid(pid_t pid, gid_t *gid);

int get_process_capeff(pid_t pid, char **capeff);

char hexchar(int x) _const_;

int unhexchar(char c) _const_;

char octchar(int x) _const_;

int unoctchar(char c) _const_;

char decchar(int x) _const_;

int undecchar(char c) _const_;

char *cescape(const char *s);

char *cunescape(const char *s);

char *cunescape_length(const char *s, size_t length);

char *cunescape_length_with_prefix(const char *s, size_t length, const char *prefix);

char *xescape(const char *s, const char *bad);

char *ascii_strlower(char *path);

bool dirent_is_file(const struct dirent *de) _pure_;

bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix) _pure_;

bool ignore_file(const char *filename) _pure_;

bool chars_intersect(const char *a, const char *b) _pure_;

int make_stdio(int fd);

int make_null_stdio(void);

int make_console_stdio(void);

int dev_urandom(void *p, size_t n);

void random_bytes(void *p, size_t n);

static inline uint64_t random_u64(void) {

uint64_t u;

random_bytes(&u, sizeof(u));

return u;

}

static inline uint32_t random_u32(void) {

uint32_t u;

random_bytes(&u, sizeof(u));

return u;

}

#define __DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \

scope const char *name##_to_string(type i) { \

if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \

return NULL; \

return name##_table[i]; \

} \

scope type name##_from_string(const char *s) { \

type i; \

if (!s) \

return (type) -1; \

for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \

if (name##_table[i] && \

streq(name##_table[i], s)) \

return i; \

return (type) -1; \

} \

struct __useless_struct_to_allow_trailing_semicolon__

#define DEFINE_STRING_TABLE_LOOKUP(name,type) __DEFINE_STRING_TABLE_LOOKUP(name,type,)

#define DEFINE_PRIVATE_STRING_TABLE_LOOKUP(name,type) __DEFINE_STRING_TABLE_LOOKUP(name,type,static)

#define DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(name,type,max) \

int name##_to_string_alloc(type i, char **str) { \

char *s; \

int r; \

if (i < 0 || i > max) \

return -ERANGE; \

if (i < (type) ELEMENTSOF(name##_table)) { \

s = strdup(name##_table[i]); \

if (!s) \

return log_oom(); \

} else { \

r = asprintf(&s, "%u", i); \

if (r < 0) \

return log_oom(); \

} \

*str = s; \

return 0; \

} \

type name##_from_string(const char *s) { \

type i; \

unsigned u = 0; \

assert(s); \

for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \

if (name##_table[i] && \

streq(name##_table[i], s)) \

return i; \

if (safe_atou(s, &u) >= 0 && u <= max) \

return (type) u; \

return (type) -1; \

} \

struct __useless_struct_to_allow_trailing_semicolon__

int fd_nonblock(int fd, bool nonblock);

int fd_cloexec(int fd, bool cloexec);

int close_all_fds(const int except[], unsigned n_except);

bool fstype_is_network(const char *fstype);

int chvt(int vt);

int read_one_char(FILE *f, char *ret, usec_t timeout, bool *need_nl);

int ask(char *ret, const char *replies, const char *text, ...) _printf_(3, 4);

int reset_terminal_fd(int fd, bool switch_to_text);

int reset_terminal(const char *name);

int open_terminal(const char *name, int mode);

int acquire_terminal(const char *name, bool fail, bool force, bool ignore_tiocstty_eperm, usec_t timeout);

int release_terminal(void);

int flush_fd(int fd);

int ignore_signals(int sig, ...);

int default_signals(int sig, ...);

int sigaction_many(const struct sigaction *sa, ...);

int close_pipe(int p[]);

int fopen_temporary(const char *path, FILE **_f, char **_temp_path);

ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll);

ssize_t loop_write(int fd, const void *buf, size_t nbytes, bool do_poll);

bool is_device_path(const char *path);

int dir_is_empty(const char *path);

char* dirname_malloc(const char *path);

void rename_process(const char name[8]);

void sigset_add_many(sigset_t *ss, ...);

bool hostname_is_set(void);

char* gethostname_malloc(void);

char* getlogname_malloc(void);

char* getusername_malloc(void);

int getttyname_malloc(int fd, char **r);

int getttyname_harder(int fd, char **r);

int get_ctty_devnr(pid_t pid, dev_t *d);

int get_ctty(pid_t, dev_t *_devnr, char **r);

int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid);

int fchmod_and_fchown(int fd, mode_t mode, uid_t uid, gid_t gid);

int rm_rf_children(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev);

int rm_rf_children_dangerous(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev);

int rm_rf(const char *path, bool only_dirs, bool delete_root, bool honour_sticky);

int rm_rf_dangerous(const char *path, bool only_dirs, bool delete_root, bool honour_sticky);

int pipe_eof(int fd);

cpu_set_t* cpu_set_malloc(unsigned *ncpus);

int status_vprintf(const char *status, bool ellipse, bool ephemeral, const char *format, va_list ap) _printf_(4,0);

int status_printf(const char *status, bool ellipse, bool ephemeral, const char *format, ...) _printf_(4,5);

int fd_columns(int fd);

unsigned columns(void);

int fd_lines(int fd);

unsigned lines(void);

void columns_lines_cache_reset(int _unused_ signum);

bool on_tty(void);

static inline const char *ansi_highlight(void) {

return on_tty() ? ANSI_HIGHLIGHT_ON : "";

}

static inline const char *ansi_highlight_red(void) {

return on_tty() ? ANSI_HIGHLIGHT_RED_ON : "";

}

static inline const char *ansi_highlight_green(void) {

return on_tty() ? ANSI_HIGHLIGHT_GREEN_ON : "";

}

static inline const char *ansi_highlight_yellow(void) {

return on_tty() ? ANSI_HIGHLIGHT_YELLOW_ON : "";

}

static inline const char *ansi_highlight_blue(void) {

return on_tty() ? ANSI_HIGHLIGHT_BLUE_ON : "";

}

static inline const char *ansi_highlight_off(void) {

return on_tty() ? ANSI_HIGHLIGHT_OFF : "";

}

int running_in_chroot(void);

char *ellipsize(const char *s, size_t length, unsigned percent);

/* bytes columns */

char *ellipsize_mem(const char *s, size_t old_length, size_t new_length, unsigned percent);

int touch(const char *path);

char *unquote(const char *s, const char *quotes);

char *normalize_env_assignment(const char *s);

int wait_for_terminate(pid_t pid, siginfo_t *status);

int wait_for_terminate_and_warn(const char *name, pid_t pid);

noreturn void freeze(void);

bool null_or_empty(struct stat *st) _pure_;

int null_or_empty_path(const char *fn);

DIR *xopendirat(int dirfd, const char *name, int flags);

char *fstab_node_to_udev_node(const char *p);

char *resolve_dev_console(char **active);

bool tty_is_vc(const char *tty);

bool tty_is_vc_resolve(const char *tty);

bool tty_is_console(const char *tty) _pure_;

int vtnr_from_tty(const char *tty);

const char *default_term_for_tty(const char *tty);

void execute_directory(const char *directory, DIR *_d, char *argv[]);

int kill_and_sigcont(pid_t pid, int sig);

bool nulstr_contains(const char*nulstr, const char *needle);

bool plymouth_running(void);

bool hostname_is_valid(const char *s) _pure_;

char* hostname_cleanup(char *s, bool lowercase);

char* strshorten(char *s, size_t l);

int terminal_vhangup_fd(int fd);

int terminal_vhangup(const char *name);

int vt_disallocate(const char *name);

int copy_file(const char *from, const char *to, int flags);

int symlink_atomic(const char *from, const char *to);

int fchmod_umask(int fd, mode_t mode);

bool display_is_local(const char *display) _pure_;

int socket_from_display(const char *display, char **path);

int get_user_creds(const char **username, uid_t *uid, gid_t *gid, const char **home, const char **shell);

int get_group_creds(const char **groupname, gid_t *gid);

int in_gid(gid_t gid);

int in_group(const char *name);

char* uid_to_name(uid_t uid);

char* gid_to_name(gid_t gid);

int glob_exists(const char *path);

int glob_extend(char ***strv, const char *path);

int dirent_ensure_type(DIR *d, struct dirent *de);

int in_search_path(const char *path, char **search);

int get_files_in_directory(const char *path, char ***list);

char *strjoin(const char *x, ...) _sentinel_;

bool is_main_thread(void);

bool in_charset(const char *s, const char* charset) _pure_;

int block_get_whole_disk(dev_t d, dev_t *ret);

int file_is_priv_sticky(const char *p);

int strdup_or_null(const char *a, char **b);

#define NULSTR_FOREACH(i, l) \

for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1)

#define NULSTR_FOREACH_PAIR(i, j, l) \

for ((i) = (l), (j) = strchr((i), 0)+1; (i) && *(i); (i) = strchr((j), 0)+1, (j) = *(i) ? strchr((i), 0)+1 : (i))

int ioprio_class_to_string_alloc(int i, char **s);

int ioprio_class_from_string(const char *s);

const char *sigchld_code_to_string(int i) _const_;

int sigchld_code_from_string(const char *s) _pure_;

int log_facility_unshifted_to_string_alloc(int i, char **s);

int log_facility_unshifted_from_string(const char *s);

int log_level_to_string_alloc(int i, char **s);

int log_level_from_string(const char *s);

int sched_policy_to_string_alloc(int i, char **s);

int sched_policy_from_string(const char *s);

const char *rlimit_to_string(int i) _const_;

int rlimit_from_string(const char *s) _pure_;

int ip_tos_to_string_alloc(int i, char **s);

int ip_tos_from_string(const char *s);

const char *signal_to_string(int i) _const_;

int signal_from_string(const char *s) _pure_;

int signal_from_string_try_harder(const char *s);

extern int saved_argc;

extern char **saved_argv;

bool kexec_loaded(void);

int prot_from_flags(int flags) _const_;

char *format_bytes(char *buf, size_t l, off_t t);

int fd_wait_for_event(int fd, int event, usec_t timeout);

void* memdup(const void *p, size_t l) _alloc_(2);

int is_kernel_thread(pid_t pid);

int fd_inc_sndbuf(int fd, size_t n);

int fd_inc_rcvbuf(int fd, size_t n);

int fork_agent(pid_t *pid, const int except[], unsigned n_except, const char *path, ...);

int setrlimit_closest(int resource, const struct rlimit *rlim);

int getenv_for_pid(pid_t pid, const char *field, char **_value);

bool is_valid_documentation_url(const char *url) _pure_;

bool in_initrd(void);

void warn_melody(void);

int get_home_dir(char **ret);

int get_shell(char **_ret);

static inline void freep(void *p) {

free(*(void**) p);

}

#define DEFINE_TRIVIAL_CLEANUP_FUNC(type, func) \

static inline void func##p(type *p) { \

if (*p) \

func(*p); \

} \

struct __useless_struct_to_allow_trailing_semicolon__

static inline void closep(int *fd) {

if (*fd >= 0)

close_nointr_nofail(*fd);

}

static inline void umaskp(mode_t *u) {

umask(*u);

}

static inline void close_pipep(int (*p)[2]) {

close_pipe(*p);

}

DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, fclose);

DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, pclose);

DEFINE_TRIVIAL_CLEANUP_FUNC(DIR*, closedir);

DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, endmntent);

#define _cleanup_free_ _cleanup_(freep)

#define _cleanup_close_ _cleanup_(closep)

#define _cleanup_umask_ _cleanup_(umaskp)

#define _cleanup_globfree_ _cleanup_(globfree)

#define _cleanup_fclose_ _cleanup_(fclosep)

#define _cleanup_pclose_ _cleanup_(pclosep)

#define _cleanup_closedir_ _cleanup_(closedirp)

#define _cleanup_endmntent_ _cleanup_(endmntentp)

#define _cleanup_close_pipe_ _cleanup_(close_pipep)

_malloc_ _alloc_(1, 2) static inline void *malloc_multiply(size_t a, size_t b) {

if (_unlikely_(b == 0 || a > ((size_t) -1) / b))

return NULL;

return malloc(a * b);

}

_alloc_(2, 3) static inline void *memdup_multiply(const void *p, size_t a, size_t b) {

if (_unlikely_(b == 0 || a > ((size_t) -1) / b))

return NULL;

return memdup(p, a * b);

}

bool filename_is_safe(const char *p) _pure_;

bool path_is_safe(const char *p) _pure_;

bool string_is_safe(const char *p) _pure_;

bool string_has_cc(const char *p) _pure_;

_pure_ static inline bool string_is_glob(const char *p) {

return !!strpbrk(p, GLOB_CHARS);

}

void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size,

int (*compar) (const void *, const void *, void *),

void *arg);

bool is_locale_utf8(void);

typedef enum DrawSpecialChar {

DRAW_TREE_VERT,

DRAW_TREE_BRANCH,

DRAW_TREE_RIGHT,

DRAW_TREE_SPACE,

DRAW_TRIANGULAR_BULLET,

DRAW_BLACK_CIRCLE,

_DRAW_SPECIAL_CHAR_MAX

} DrawSpecialChar;

const char *draw_special_char(DrawSpecialChar ch);

char *strreplace(const char *text, const char *old_string, const char *new_string);

char *strip_tab_ansi(char **p, size_t *l);

int on_ac_power(void);

int search_and_fopen(const char *path, const char *mode, const char **search, FILE **_f);

int search_and_fopen_nulstr(const char *path, const char *mode, const char *search, FILE **_f);

#define FOREACH_LINE(line, f, on_error) \

for (;;) \

if (!fgets(line, sizeof(line), f)) { \

if (ferror(f)) { \

on_error; \

} \

break; \

} else

#define FOREACH_DIRENT(de, d, on_error) \

for (errno = 0, de = readdir(d);; errno = 0, de = readdir(d)) \

if (!de) { \

if (errno > 0) { \

on_error; \

} \

break; \

} else if (ignore_file((de)->d_name)) \

continue; \

else

static inline void *mempset(void *s, int c, size_t n) {

memset(s, c, n);

return (uint8_t*)s + n;

}

char *hexmem(const void *p, size_t l);

void *unhexmem(const char *p, size_t l);

char *strextend(char **x, ...) _sentinel_;

char *strrep(const char *s, unsigned n);

void* greedy_realloc(void **p, size_t *allocated, size_t need);

void* greedy_realloc0(void **p, size_t *allocated, size_t need);

#define GREEDY_REALLOC(array, allocated, need) \

greedy_realloc((void**) &(array), &(allocated), sizeof((array)[0]) * (need))

#define GREEDY_REALLOC0(array, allocated, need) \

greedy_realloc0((void**) &(array), &(allocated), sizeof((array)[0]) * (need))

static inline void _reset_errno_(int *saved_errno) {

errno = *saved_errno;

}

#define PROTECT_ERRNO _cleanup_(_reset_errno_) __attribute__((unused)) int _saved_errno_ = errno

struct _umask_struct_ {

mode_t mask;

bool quit;

};

static inline void _reset_umask_(struct _umask_struct_ *s) {

umask(s->mask);

};

#define RUN_WITH_UMASK(mask) \

for (_cleanup_(_reset_umask_) struct _umask_struct_ _saved_umask_ = { umask(mask), false }; \

!_saved_umask_.quit ; \

_saved_umask_.quit = true)

static inline unsigned u64log2(uint64_t n) {

#if __SIZEOF_LONG_LONG__ == 8

return (n > 1) ? (unsigned) __builtin_clzll(n) ^ 63U : 0;

#else

#error "Wut?"

#endif

}

static inline unsigned u32ctz(uint32_t n) {

#if __SIZEOF_INT__ == 4

return __builtin_ctz(n);

#else

#error "Wut?"

#endif

}

static inline bool logind_running(void) {

return access("/run/systemd/seats/", F_OK) >= 0;

}

#define DECIMAL_STR_WIDTH(x) \

({ \

typeof(x) _x_ = (x); \

unsigned ans = 1; \

while (_x_ /= 10) \

ans++; \

ans; \

})

int unlink_noerrno(const char *path);

#define alloca0(n) \

({ \

char *_new_; \

size_t _len_ = n; \

_new_ = alloca(_len_); \

(void *) memset(_new_, 0, _len_); \

})

#define strappenda(a, b) \

({ \

const char *_a_ = (a), *_b_ = (b); \

char *_c_; \

size_t _x_, _y_; \

_x_ = strlen(_a_); \

_y_ = strlen(_b_); \

_c_ = alloca(_x_ + _y_ + 1); \

strcpy(stpcpy(_c_, _a_), _b_); \

_c_; \

})

#define procfs_file_alloca(pid, field) \

({ \

pid_t _pid_ = (pid); \

const char *_r_; \

if (_pid_ == 0) { \

_r_ = ("/proc/self/" field); \

} else { \

_r_ = alloca(strlen("/proc/") + DECIMAL_STR_MAX(pid_t) + 1 + sizeof(field)); \

sprintf((char*) _r_, "/proc/"PID_FMT"/" field, _pid_); \

} \

_r_; \

})

struct _locale_struct_ {

locale_t saved_locale;

locale_t new_locale;

bool quit;

};

static inline void _reset_locale_(struct _locale_struct_ *s) {

PROTECT_ERRNO;

if (s->saved_locale != (locale_t) 0)

uselocale(s->saved_locale);

if (s->new_locale != (locale_t) 0)

freelocale(s->new_locale);

}

#define RUN_WITH_LOCALE(mask, loc) \

for (_cleanup_(_reset_locale_) struct _locale_struct_ _saved_locale_ = { (locale_t) 0, (locale_t) 0, false }; \

({ \

if (!_saved_locale_.quit) { \

PROTECT_ERRNO; \

_saved_locale_.new_locale = newlocale((mask), (loc), (locale_t) 0); \

if (_saved_locale_.new_locale != (locale_t) 0) \

_saved_locale_.saved_locale = uselocale(_saved_locale_.new_locale); \

} \

!_saved_locale_.quit; }) ; \

_saved_locale_.quit = true)

bool id128_is_valid(const char *s) _pure_;

int split_pair(const char *s, const char *sep, char **l, char **r);

int shall_restore_state(void);

static inline void qsort_safe(void *base, size_t nmemb, size_t size,

int (*compar)(const void *, const void *)) {

if (nmemb) {

assert(base);

qsort(base, nmemb, size, compar);

}

}

int proc_cmdline(char **ret);

int parse_proc_cmdline(int (*parse_word)(const char *word));

int container_get_leader(const char *machine, pid_t *pid);

int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *root_fd);

int namespace_enter(int pidns_fd, int mntns_fd, int root_fd);

bool pid_is_alive(pid_t pid);

bool pid_is_unwaited(pid_t pid);

int getpeercred(int fd, struct ucred *ucred);

int getpeersec(int fd, char **ret);

int writev_safe(int fd, const struct iovec *w, int j);

int mkostemp_safe(char *pattern, int flags);

int open_tmpfile(const char *path, int flags);

int fd_warn_permissions(const char *path, int fd);

unsigned long parse_personality(const char *p);