#pragma once

#include <alloca.h>

#include <fcntl.h>

#include <inttypes.h>

#include <time.h>

#include <stdarg.h>

#include <stdbool.h>

#include <stdlib.h>

#include <stdio.h>

#include <sched.h>

#include <limits.h>

#include <sys/types.h>

#include <sys/socket.h>

#include <sys/stat.h>

#include <dirent.h>

#include <stddef.h>

#include <unistd.h>

#include <locale.h>

#include <mntent.h>

#include <sys/inotify.h>

#include <sys/statfs.h>

#include "macro.h"

#include "missing.h"

#include "time-util.h"

#include "formats-util.h"

#define WHITESPACE " \t\n\r"

#define NEWLINE "\n\r"

#define QUOTES "\"\'"

#define COMMENTS "#;"

#define GLOB_CHARS "*?["

#define SHELL_NEED_ESCAPE "\"\\`$"

#define SHELL_NEED_QUOTES SHELL_NEED_ESCAPE GLOB_CHARS "'()<>|&;"

#define FORMAT_BYTES_MAX 8

size_t page_size(void) _pure_;

#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_;

int strcmp_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 newa0(t, n) ((t*) alloca0(sizeof(t)*(n)))

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

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

static inline void *mfree(void *memory) {

free(memory);

return NULL;

}

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* one_zero(bool b) {

return b ? "1" : "0";

}

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

size_t l;

l = strlen(prefix);

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

return (char*) s + l;

return NULL;

}

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

size_t l;

l = strlen(prefix);

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

return (char*) s + l;

return NULL;

}

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

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

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

int close_nointr(int fd);

int safe_close(int fd);

void safe_close_pair(int p[]);

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

int parse_size(const char *t, off_t base, off_t *size);

int parse_boolean(const char *v) _pure_;

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_gid) parse_uid(s, ret_gid)

bool uid_is_valid(uid_t uid);

#define gid_is_valid(gid) uid_is_valid(gid)

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);

int safe_atou8(const char *s, uint8_t *ret);

#if LONG_MAX == INT_MAX

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);

}

int safe_atou16(const char *s, uint16_t *ret);

int safe_atoi16(const char *s, int16_t *ret);

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

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

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

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

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

int readlinkat_malloc(int fd, const char *p, char **ret);

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

int readlink_value(const char *p, char **ret);

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

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

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);

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 base32hexchar(int x) _const_;

int unbase32hexchar(char c) _const_;

char base64char(int x) _const_;

int unbase64char(char c) _const_;

char *cescape(const char *s);

size_t cescape_char(char c, char *buf);

typedef enum UnescapeFlags {

UNESCAPE_RELAX = 1,

} UnescapeFlags;

int cunescape(const char *s, UnescapeFlags flags, char **ret);

int cunescape_length(const char *s, size_t length, UnescapeFlags flags, char **ret);

int cunescape_length_with_prefix(const char *s, size_t length, const char *prefix, UnescapeFlags flags, char **ret);

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 hidden_file(const char *filename) _pure_;

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

#define _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(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]; \

}

ssize_t string_table_lookup(const char * const *table, size_t len, const char *key);

#define _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,scope) \

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

return (type)string_table_lookup(name##_table, ELEMENTSOF(name##_table), s); \

}

#define _DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \

_DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,scope) \

_DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,scope) \

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_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(name,type) _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,static)

#define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(name,type) _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(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, "%i", 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 flush_fd(int fd);

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);

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

int 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);

char* lookup_uid(uid_t uid);

char* getlogname_malloc(void);

char* getusername_malloc(void);

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);

bool is_temporary_fs(const struct statfs *s) _pure_;

int fd_is_temporary_fs(int fd);

int pipe_eof(int fd);

DEFINE_TRIVIAL_CLEANUP_FUNC(cpu_set_t*, CPU_FREE);

#define _cleanup_cpu_free_ _cleanup_(CPU_FREEp)

cpu_set_t* cpu_set_malloc(unsigned *ncpus);

#define xsprintf(buf, fmt, ...) assert_se((size_t) snprintf(buf, ELEMENTSOF(buf), fmt, __VA_ARGS__) < ELEMENTSOF(buf))

int files_same(const char *filea, const char *fileb);

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_file(const char *path, bool parents, usec_t stamp, uid_t uid, gid_t gid, mode_t mode);

int touch(const char *path);

noreturn void freeze(void);

bool null_or_empty(struct stat *st) _pure_;

int null_or_empty_path(const char *fn);

int null_or_empty_fd(int fd);

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

char *fstab_node_to_udev_node(const char *p);

void execute_directories(const char* const* directories, usec_t timeout, char *argv[]);

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

bool plymouth_running(void);

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

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

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

int mknod_atomic(const char *path, mode_t mode, dev_t dev);

int mkfifo_atomic(const char *path, mode_t mode);

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

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

bool is_main_thread(void);

static inline bool _pure_ in_charset(const char *s, const char* charset) {

assert(s);

assert(charset);

return s[strspn(s, charset)] == '\0';

}

int block_get_whole_disk(dev_t d, dev_t *ret);

#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);

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 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);

bool http_url_is_valid(const char *url) _pure_;

bool documentation_url_is_valid(const char *url) _pure_;

bool http_etag_is_valid(const char *etag);

bool in_initrd(void);

int get_home_dir(char **ret);

int get_shell(char **_ret);

static inline void freep(void *p) {

free(*(void**) p);

}

static inline void closep(int *fd) {

safe_close(*fd);

}

static inline void umaskp(mode_t *u) {

umask(*u);

}

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

safe_close_pair(*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_pair_ _cleanup_(close_pairp)

_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 *realloc_multiply(void *p, size_t a, size_t b) {

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

return NULL;

return realloc(p, 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_valid(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, const char *ok) _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);

#define _(String) gettext (String)

void init_gettext(void);

bool is_locale_utf8(void);

typedef enum DrawSpecialChar {

DRAW_TREE_VERTICAL,

DRAW_TREE_BRANCH,

DRAW_TREE_RIGHT,

DRAW_TREE_SPACE,

DRAW_TRIANGULAR_BULLET,

DRAW_BLACK_CIRCLE,

DRAW_ARROW,

DRAW_DASH,

_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 *root, const char **search, FILE **_f);

int search_and_fopen_nulstr(const char *path, const char *mode, const char *root, 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 (hidden_file((de)->d_name)) \

continue; \

else

#define FOREACH_DIRENT_ALL(de, d, on_error) \

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

if (!de) { \

if (errno > 0) { \

on_error; \

} \

break; \

} 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);

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

char *base32hexmem(const void *p, size_t l, bool padding);

int unbase32hexmem(const char *p, size_t l, bool padding, void **mem, size_t *len);

char *base64mem(const void *p, size_t l);

int unbase64mem(const char *p, size_t l, void **mem, size_t *len);

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

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

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

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

#define GREEDY_REALLOC(array, allocated, need) \

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

#define GREEDY_REALLOC0(array, allocated, need) \

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

static inline void _reset_errno_(int *saved_errno) {

errno = *saved_errno;

}

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

static inline int negative_errno(void) {

/* This helper should be used to shut up gcc if you know 'errno' is

assert_return(errno > 0, -EINVAL);

return -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 unsigned log2i(int x) {

assert(x > 0);

return __SIZEOF_INT__ * 8 - __builtin_clz(x) - 1;

}

static inline unsigned log2u(unsigned x) {

assert(x > 0);

return sizeof(unsigned) * 8 - __builtin_clz(x) - 1;

}

static inline unsigned log2u_round_up(unsigned x) {

assert(x > 0);

if (x == 1)

return 0;

return log2u(x - 1) + 1;

}

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 alloca_align(size, align) \

({ \

void *_ptr_; \

size_t _mask_ = (align) - 1; \

_ptr_ = alloca((size) + _mask_); \

(void*)(((uintptr_t)_ptr_ + _mask_) & ~_mask_); \

})

#define alloca0_align(size, align) \

({ \

void *_new_; \

size_t _size_ = (size); \

_new_ = alloca_align(_size_, (align)); \

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

})

#define strjoina(a, ...) \

({ \

const char *_appendees_[] = { a, __VA_ARGS__ }; \

char *_d_, *_p_; \

int _len_ = 0; \

unsigned _i_; \

for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \

_len_ += strlen(_appendees_[_i_]); \

_p_ = _d_ = alloca(_len_ + 1); \

for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \

_p_ = stpcpy(_p_, _appendees_[_i_]); \

*_p_ = 0; \

_d_; \

})

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, comparison_fn_t compar) {

if (nmemb <= 1)

return;

assert(base);

qsort(base, nmemb, size, compar);

}

static inline void *memmem_safe(const void *haystack, size_t haystacklen, const void *needle, size_t needlelen) {

if (needlelen <= 0)

return (void*) haystack;

if (haystacklen < needlelen)

return NULL;

assert(haystack);

assert(needle);

return memmem(haystack, haystacklen, needle, needlelen);

}

int proc_cmdline(char **ret);

int parse_proc_cmdline(int (*parse_word)(const char *key, const char *value));

int get_proc_cmdline_key(const char *parameter, char **value);

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

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

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

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);

#ifndef PERSONALITY_INVALID

#define PERSONALITY_INVALID 0xffffffffLU

#endif

unsigned long personality_from_string(const char *p);

const char *personality_to_string(unsigned long);

uint64_t physical_memory(void);

void hexdump(FILE *f, const void *p, size_t s);

union file_handle_union {

struct file_handle handle;

char padding[sizeof(struct file_handle) + MAX_HANDLE_SZ];

};

#define FILE_HANDLE_INIT { .handle.handle_bytes = MAX_HANDLE_SZ }

int update_reboot_param_file(const char *param);

int umount_recursive(const char *target, int flags);

int bind_remount_recursive(const char *prefix, bool ro);

int fflush_and_check(FILE *f);

int tempfn_xxxxxx(const char *p, const char *extra, char **ret);

int tempfn_random(const char *p, const char *extra, char **ret);

int tempfn_random_child(const char *p, const char *extra, char **ret);

int take_password_lock(const char *root);

int is_symlink(const char *path);

int is_dir(const char *path, bool follow);

int is_device_node(const char *path);

typedef enum ExtractFlags {

EXTRACT_RELAX = 1,

EXTRACT_CUNESCAPE = 2,

EXTRACT_CUNESCAPE_RELAX = 4,

EXTRACT_QUOTES = 8,

EXTRACT_DONT_COALESCE_SEPARATORS = 16,

} ExtractFlags;

int extract_first_word(const char **p, char **ret, const char *separators, ExtractFlags flags);

int extract_first_word_and_warn(const char **p, char **ret, const char *separators, ExtractFlags flags, const char *unit, const char *filename, unsigned line, const char *rvalue);

int extract_many_words(const char **p, const char *separators, ExtractFlags flags, ...) _sentinel_;

static inline void free_and_replace(char **s, char *v) {

free(*s);

*s = v;

}

int free_and_strdup(char **p, const char *s);

#define INOTIFY_EVENT_MAX (sizeof(struct inotify_event) + NAME_MAX + 1)

#define FOREACH_INOTIFY_EVENT(e, buffer, sz) \

for ((e) = &buffer.ev; \

(uint8_t*) (e) < (uint8_t*) (buffer.raw) + (sz); \

(e) = (struct inotify_event*) ((uint8_t*) (e) + sizeof(struct inotify_event) + (e)->len))

union inotify_event_buffer {

struct inotify_event ev;

uint8_t raw[INOTIFY_EVENT_MAX];

};

#define laccess(path, mode) faccessat(AT_FDCWD, (path), (mode), AT_SYMLINK_NOFOLLOW)

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

int openpt_in_namespace(pid_t pid, int flags);

ssize_t fgetxattrat_fake(int dirfd, const char *filename, const char *attribute, void *value, size_t size, int flags);

int fd_setcrtime(int fd, usec_t usec);

int fd_getcrtime(int fd, usec_t *usec);

int path_getcrtime(const char *p, usec_t *usec);

int fd_getcrtime_at(int dirfd, const char *name, usec_t *usec, int flags);

int same_fd(int a, int b);

int chattr_fd(int fd, unsigned value, unsigned mask);

int chattr_path(const char *p, unsigned value, unsigned mask);

int read_attr_fd(int fd, unsigned *ret);

int read_attr_path(const char *p, unsigned *ret);

#define RLIMIT_MAKE_CONST(lim) ((struct rlimit) { lim, lim })

ssize_t sparse_write(int fd, const void *p, size_t sz, size_t run_length);

void sigkill_wait(pid_t *pid);

#define _cleanup_sigkill_wait_ _cleanup_(sigkill_wait)

int syslog_parse_priority(const char **p, int *priority, bool with_facility);

void cmsg_close_all(struct msghdr *mh);

int rename_noreplace(int olddirfd, const char *oldpath, int newdirfd, const char *newpath);

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

char *shell_maybe_quote(const char *s);

int parse_mode(const char *s, mode_t *ret);

int mount_move_root(const char *path);

int reset_uid_gid(void);

int getxattr_malloc(const char *path, const char *name, char **value, bool allow_symlink);

int fgetxattr_malloc(int fd, const char *name, char **value);