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/>.
36 #include <sys/inotify.h>
37 #include <sys/socket.h>
39 #include <sys/statfs.h>
40 #include <sys/types.h>
44 #include "formats-util.h"
47 #include "time-util.h"
49 /* What is interpreted as whitespace? */
50 #define WHITESPACE " \t\n\r"
51 #define NEWLINE "\n\r"
54 #define GLOB_CHARS "*?["
56 #define FORMAT_BYTES_MAX 8
58 size_t page_size(void) _pure_
;
59 #define PAGE_ALIGN(l) ALIGN_TO((l), page_size())
61 #define new(t, n) ((t*) malloc_multiply(sizeof(t), (n)))
63 #define new0(t, n) ((t*) calloc((n), sizeof(t)))
65 #define newa(t, n) ((t*) alloca(sizeof(t)*(n)))
67 #define newa0(t, n) ((t*) alloca0(sizeof(t)*(n)))
69 #define newdup(t, p, n) ((t*) memdup_multiply(p, sizeof(t), (n)))
71 #define malloc0(n) (calloc(1, (n)))
73 static inline void *mfree(void *memory
) {
78 static inline const char* yes_no(bool b
) {
79 return b
? "yes" : "no";
82 static inline const char* true_false(bool b
) {
83 return b
? "true" : "false";
86 static inline const char* one_zero(bool b
) {
90 int parse_size(const char *t
, uint64_t base
, uint64_t *size
);
92 int parse_boolean(const char *v
) _pure_
;
93 int parse_pid(const char *s
, pid_t
* ret_pid
);
94 int parse_uid(const char *s
, uid_t
* ret_uid
);
95 #define parse_gid(s, ret_gid) parse_uid(s, ret_gid)
97 bool uid_is_valid(uid_t uid
);
99 static inline bool gid_is_valid(gid_t gid
) {
100 return uid_is_valid((uid_t
) gid
);
103 int safe_atou(const char *s
, unsigned *ret_u
);
104 int safe_atoi(const char *s
, int *ret_i
);
106 int safe_atollu(const char *s
, unsigned long long *ret_u
);
107 int safe_atolli(const char *s
, long long int *ret_i
);
109 int safe_atod(const char *s
, double *ret_d
);
111 int safe_atou8(const char *s
, uint8_t *ret
);
113 #if LONG_MAX == INT_MAX
114 static inline int safe_atolu(const char *s
, unsigned long *ret_u
) {
115 assert_cc(sizeof(unsigned long) == sizeof(unsigned));
116 return safe_atou(s
, (unsigned*) ret_u
);
118 static inline int safe_atoli(const char *s
, long int *ret_u
) {
119 assert_cc(sizeof(long int) == sizeof(int));
120 return safe_atoi(s
, (int*) ret_u
);
123 static inline int safe_atolu(const char *s
, unsigned long *ret_u
) {
124 assert_cc(sizeof(unsigned long) == sizeof(unsigned long long));
125 return safe_atollu(s
, (unsigned long long*) ret_u
);
127 static inline int safe_atoli(const char *s
, long int *ret_u
) {
128 assert_cc(sizeof(long int) == sizeof(long long int));
129 return safe_atolli(s
, (long long int*) ret_u
);
133 static inline int safe_atou32(const char *s
, uint32_t *ret_u
) {
134 assert_cc(sizeof(uint32_t) == sizeof(unsigned));
135 return safe_atou(s
, (unsigned*) ret_u
);
138 static inline int safe_atoi32(const char *s
, int32_t *ret_i
) {
139 assert_cc(sizeof(int32_t) == sizeof(int));
140 return safe_atoi(s
, (int*) ret_i
);
143 static inline int safe_atou64(const char *s
, uint64_t *ret_u
) {
144 assert_cc(sizeof(uint64_t) == sizeof(unsigned long long));
145 return safe_atollu(s
, (unsigned long long*) ret_u
);
148 static inline int safe_atoi64(const char *s
, int64_t *ret_i
) {
149 assert_cc(sizeof(int64_t) == sizeof(long long int));
150 return safe_atolli(s
, (long long int*) ret_i
);
153 int safe_atou16(const char *s
, uint16_t *ret
);
154 int safe_atoi16(const char *s
, int16_t *ret
);
156 int readlinkat_malloc(int fd
, const char *p
, char **ret
);
157 int readlink_malloc(const char *p
, char **r
);
158 int readlink_value(const char *p
, char **ret
);
159 int readlink_and_make_absolute(const char *p
, char **r
);
160 int readlink_and_canonicalize(const char *p
, char **r
);
162 char *file_in_same_dir(const char *path
, const char *filename
);
164 int rmdir_parents(const char *path
, const char *stop
);
166 char hexchar(int x
) _const_
;
167 int unhexchar(char c
) _const_
;
168 char octchar(int x
) _const_
;
169 int unoctchar(char c
) _const_
;
170 char decchar(int x
) _const_
;
171 int undecchar(char c
) _const_
;
172 char base32hexchar(int x
) _const_
;
173 int unbase32hexchar(char c
) _const_
;
174 char base64char(int x
) _const_
;
175 int unbase64char(char c
) _const_
;
177 bool dirent_is_file(const struct dirent
*de
) _pure_
;
178 bool dirent_is_file_with_suffix(const struct dirent
*de
, const char *suffix
) _pure_
;
180 bool hidden_file(const char *filename
) _pure_
;
182 /* For basic lookup tables with strictly enumerated entries */
183 #define _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,scope) \
184 scope const char *name##_to_string(type i) { \
185 if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \
187 return name##_table[i]; \
190 ssize_t
string_table_lookup(const char * const *table
, size_t len
, const char *key
);
192 #define _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,scope) \
193 scope type name##_from_string(const char *s) { \
194 return (type) string_table_lookup(name##_table, ELEMENTSOF(name##_table), s); \
197 #define _DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \
198 _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,scope) \
199 _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,scope) \
200 struct __useless_struct_to_allow_trailing_semicolon__
202 #define DEFINE_STRING_TABLE_LOOKUP(name,type) _DEFINE_STRING_TABLE_LOOKUP(name,type,)
203 #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP(name,type) _DEFINE_STRING_TABLE_LOOKUP(name,type,static)
204 #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(name,type) _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,static)
205 #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(name,type) _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,static)
207 /* For string conversions where numbers are also acceptable */
208 #define DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(name,type,max) \
209 int name##_to_string_alloc(type i, char **str) { \
211 if (i < 0 || i > max) \
213 if (i < (type) ELEMENTSOF(name##_table)) { \
214 s = strdup(name##_table[i]); \
218 if (asprintf(&s, "%i", i) < 0) \
224 type name##_from_string(const char *s) { \
229 for (i = 0; i < (type) ELEMENTSOF(name##_table); i++) \
230 if (streq_ptr(name##_table[i], s)) \
232 if (safe_atou(s, &u) >= 0 && u <= max) \
236 struct __useless_struct_to_allow_trailing_semicolon__
238 bool fstype_is_network(const char *fstype
);
240 int fopen_temporary(const char *path
, FILE **_f
, char **_temp_path
);
242 bool is_device_path(const char *path
);
244 int dir_is_empty(const char *path
);
245 char* dirname_malloc(const char *path
);
247 static inline int dir_is_populated(const char *path
) {
249 r
= dir_is_empty(path
);
255 char* lookup_uid(uid_t uid
);
256 char* getlogname_malloc(void);
257 char* getusername_malloc(void);
259 int chmod_and_chown(const char *path
, mode_t mode
, uid_t uid
, gid_t gid
);
260 int fchmod_and_fchown(int fd
, mode_t mode
, uid_t uid
, gid_t gid
);
262 typedef long statfs_f_type_t
;
264 bool is_fs_type(const struct statfs
*s
, statfs_f_type_t magic_value
) _pure_
;
265 int fd_check_fstype(int fd
, statfs_f_type_t magic_value
);
266 int path_check_fstype(const char *path
, statfs_f_type_t magic_value
);
268 bool is_temporary_fs(const struct statfs
*s
) _pure_
;
269 int fd_is_temporary_fs(int fd
);
271 #define xsprintf(buf, fmt, ...) \
272 assert_message_se((size_t) snprintf(buf, ELEMENTSOF(buf), fmt, __VA_ARGS__) < ELEMENTSOF(buf), \
273 "xsprintf: " #buf "[] must be big enough")
275 int files_same(const char *filea
, const char *fileb
);
277 int running_in_chroot(void);
279 int touch_file(const char *path
, bool parents
, usec_t stamp
, uid_t uid
, gid_t gid
, mode_t mode
);
280 int touch(const char *path
);
282 noreturn
void freeze(void);
284 bool null_or_empty(struct stat
*st
) _pure_
;
285 int null_or_empty_path(const char *fn
);
286 int null_or_empty_fd(int fd
);
288 DIR *xopendirat(int dirfd
, const char *name
, int flags
);
290 char *fstab_node_to_udev_node(const char *p
);
292 void execute_directories(const char* const* directories
, usec_t timeout
, char *argv
[]);
294 bool plymouth_running(void);
296 int symlink_idempotent(const char *from
, const char *to
);
298 int symlink_atomic(const char *from
, const char *to
);
299 int mknod_atomic(const char *path
, mode_t mode
, dev_t dev
);
300 int mkfifo_atomic(const char *path
, mode_t mode
);
302 int fchmod_umask(int fd
, mode_t mode
);
304 bool display_is_local(const char *display
) _pure_
;
305 int socket_from_display(const char *display
, char **path
);
307 int get_user_creds(const char **username
, uid_t
*uid
, gid_t
*gid
, const char **home
, const char **shell
);
308 int get_group_creds(const char **groupname
, gid_t
*gid
);
310 int in_gid(gid_t gid
);
311 int in_group(const char *name
);
313 char* uid_to_name(uid_t uid
);
314 char* gid_to_name(gid_t gid
);
316 int glob_exists(const char *path
);
317 int glob_extend(char ***strv
, const char *path
);
319 int dirent_ensure_type(DIR *d
, struct dirent
*de
);
321 int get_files_in_directory(const char *path
, char ***list
);
323 bool is_main_thread(void);
325 int block_get_whole_disk(dev_t d
, dev_t
*ret
);
327 #define NULSTR_FOREACH(i, l) \
328 for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1)
330 #define NULSTR_FOREACH_PAIR(i, j, l) \
331 for ((i) = (l), (j) = strchr((i), 0)+1; (i) && *(i); (i) = strchr((j), 0)+1, (j) = *(i) ? strchr((i), 0)+1 : (i))
333 int ioprio_class_to_string_alloc(int i
, char **s
);
334 int ioprio_class_from_string(const char *s
);
336 const char *sigchld_code_to_string(int i
) _const_
;
337 int sigchld_code_from_string(const char *s
) _pure_
;
339 int log_facility_unshifted_to_string_alloc(int i
, char **s
);
340 int log_facility_unshifted_from_string(const char *s
);
341 bool log_facility_unshifted_is_valid(int faciliy
);
343 int log_level_to_string_alloc(int i
, char **s
);
344 int log_level_from_string(const char *s
);
345 bool log_level_is_valid(int level
);
347 int sched_policy_to_string_alloc(int i
, char **s
);
348 int sched_policy_from_string(const char *s
);
350 const char *rlimit_to_string(int i
) _const_
;
351 int rlimit_from_string(const char *s
) _pure_
;
353 int ip_tos_to_string_alloc(int i
, char **s
);
354 int ip_tos_from_string(const char *s
);
356 extern int saved_argc
;
357 extern char **saved_argv
;
359 bool kexec_loaded(void);
361 int prot_from_flags(int flags
) _const_
;
363 char *format_bytes(char *buf
, size_t l
, uint64_t t
);
365 void* memdup(const void *p
, size_t l
) _alloc_(2);
367 int fd_inc_sndbuf(int fd
, size_t n
);
368 int fd_inc_rcvbuf(int fd
, size_t n
);
370 int fork_agent(pid_t
*pid
, const int except
[], unsigned n_except
, const char *path
, ...);
372 int setrlimit_closest(int resource
, const struct rlimit
*rlim
);
374 bool http_url_is_valid(const char *url
) _pure_
;
375 bool documentation_url_is_valid(const char *url
) _pure_
;
377 bool http_etag_is_valid(const char *etag
);
379 bool in_initrd(void);
381 int get_home_dir(char **ret
);
382 int get_shell(char **_ret
);
384 static inline void freep(void *p
) {
388 static inline void umaskp(mode_t
*u
) {
392 DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, endmntent
);
394 #define _cleanup_free_ _cleanup_(freep)
395 #define _cleanup_umask_ _cleanup_(umaskp)
396 #define _cleanup_globfree_ _cleanup_(globfree)
397 #define _cleanup_endmntent_ _cleanup_(endmntentp)
399 _malloc_
_alloc_(1, 2) static inline void *malloc_multiply(size_t a
, size_t b
) {
400 if (_unlikely_(b
!= 0 && a
> ((size_t) -1) / b
))
403 return malloc(a
* b
);
406 _alloc_(2, 3) static inline void *realloc_multiply(void *p
, size_t a
, size_t b
) {
407 if (_unlikely_(b
!= 0 && a
> ((size_t) -1) / b
))
410 return realloc(p
, a
* b
);
413 _alloc_(2, 3) static inline void *memdup_multiply(const void *p
, size_t a
, size_t b
) {
414 if (_unlikely_(b
!= 0 && a
> ((size_t) -1) / b
))
417 return memdup(p
, a
* b
);
420 bool filename_is_valid(const char *p
) _pure_
;
421 bool path_is_safe(const char *p
) _pure_
;
422 bool string_is_safe(const char *p
) _pure_
;
425 * Check if a string contains any glob patterns.
427 _pure_
static inline bool string_is_glob(const char *p
) {
428 return !!strpbrk(p
, GLOB_CHARS
);
431 void *xbsearch_r(const void *key
, const void *base
, size_t nmemb
, size_t size
,
432 int (*compar
) (const void *, const void *, void *),
435 #define _(String) gettext (String)
436 #define N_(String) String
437 void init_gettext(void);
438 bool is_locale_utf8(void);
440 typedef enum DrawSpecialChar
{
445 DRAW_TRIANGULAR_BULLET
,
449 _DRAW_SPECIAL_CHAR_MAX
452 const char *draw_special_char(DrawSpecialChar ch
);
454 int on_ac_power(void);
456 int search_and_fopen(const char *path
, const char *mode
, const char *root
, const char **search
, FILE **_f
);
457 int search_and_fopen_nulstr(const char *path
, const char *mode
, const char *root
, const char *search
, FILE **_f
);
459 #define FOREACH_LINE(line, f, on_error) \
461 if (!fgets(line, sizeof(line), f)) { \
468 #define FOREACH_DIRENT(de, d, on_error) \
469 for (errno = 0, de = readdir(d);; errno = 0, de = readdir(d)) \
475 } else if (hidden_file((de)->d_name)) \
479 #define FOREACH_DIRENT_ALL(de, d, on_error) \
480 for (errno = 0, de = readdir(d);; errno = 0, de = readdir(d)) \
488 static inline void *mempset(void *s
, int c
, size_t n
) {
490 return (uint8_t*)s
+ n
;
493 char *hexmem(const void *p
, size_t l
);
494 int unhexmem(const char *p
, size_t l
, void **mem
, size_t *len
);
496 char *base32hexmem(const void *p
, size_t l
, bool padding
);
497 int unbase32hexmem(const char *p
, size_t l
, bool padding
, void **mem
, size_t *len
);
499 char *base64mem(const void *p
, size_t l
);
500 int unbase64mem(const char *p
, size_t l
, void **mem
, size_t *len
);
502 void* greedy_realloc(void **p
, size_t *allocated
, size_t need
, size_t size
);
503 void* greedy_realloc0(void **p
, size_t *allocated
, size_t need
, size_t size
);
504 #define GREEDY_REALLOC(array, allocated, need) \
505 greedy_realloc((void**) &(array), &(allocated), (need), sizeof((array)[0]))
507 #define GREEDY_REALLOC0(array, allocated, need) \
508 greedy_realloc0((void**) &(array), &(allocated), (need), sizeof((array)[0]))
510 static inline void _reset_errno_(int *saved_errno
) {
511 errno
= *saved_errno
;
514 #define PROTECT_ERRNO _cleanup_(_reset_errno_) __attribute__((unused)) int _saved_errno_ = errno
516 static inline int negative_errno(void) {
517 /* This helper should be used to shut up gcc if you know 'errno' is
518 * negative. Instead of "return -errno;", use "return negative_errno();"
519 * It will suppress bogus gcc warnings in case it assumes 'errno' might
520 * be 0 and thus the caller's error-handling might not be triggered. */
521 assert_return(errno
> 0, -EINVAL
);
525 struct _umask_struct_
{
530 static inline void _reset_umask_(struct _umask_struct_
*s
) {
534 #define RUN_WITH_UMASK(mask) \
535 for (_cleanup_(_reset_umask_) struct _umask_struct_ _saved_umask_ = { umask(mask), false }; \
536 !_saved_umask_.quit ; \
537 _saved_umask_.quit = true)
539 static inline unsigned u64log2(uint64_t n
) {
540 #if __SIZEOF_LONG_LONG__ == 8
541 return (n
> 1) ? (unsigned) __builtin_clzll(n
) ^ 63U : 0;
547 static inline unsigned u32ctz(uint32_t n
) {
548 #if __SIZEOF_INT__ == 4
549 return __builtin_ctz(n
);
555 static inline unsigned log2i(int x
) {
558 return __SIZEOF_INT__
* 8 - __builtin_clz(x
) - 1;
561 static inline unsigned log2u(unsigned x
) {
564 return sizeof(unsigned) * 8 - __builtin_clz(x
) - 1;
567 static inline unsigned log2u_round_up(unsigned x
) {
573 return log2u(x
- 1) + 1;
576 #define DECIMAL_STR_WIDTH(x) \
578 typeof(x) _x_ = (x); \
585 int unlink_noerrno(const char *path
);
591 _new_ = alloca(_len_); \
592 (void *) memset(_new_, 0, _len_); \
595 /* It's not clear what alignment glibc/gcc alloca() guarantee, hence provide a guaranteed safe version */
596 #define alloca_align(size, align) \
599 size_t _mask_ = (align) - 1; \
600 _ptr_ = alloca((size) + _mask_); \
601 (void*)(((uintptr_t)_ptr_ + _mask_) & ~_mask_); \
604 #define alloca0_align(size, align) \
607 size_t _size_ = (size); \
608 _new_ = alloca_align(_size_, (align)); \
609 (void*)memset(_new_, 0, _size_); \
612 bool id128_is_valid(const char *s
) _pure_
;
614 int shall_restore_state(void);
617 * Normal qsort requires base to be nonnull. Here were require
618 * that only if nmemb > 0.
620 static inline void qsort_safe(void *base
, size_t nmemb
, size_t size
, comparison_fn_t compar
) {
625 qsort(base
, nmemb
, size
, compar
);
628 int proc_cmdline(char **ret
);
629 int parse_proc_cmdline(int (*parse_word
)(const char *key
, const char *value
));
630 int get_proc_cmdline_key(const char *parameter
, char **value
);
632 int container_get_leader(const char *machine
, pid_t
*pid
);
634 int namespace_open(pid_t pid
, int *pidns_fd
, int *mntns_fd
, int *netns_fd
, int *userns_fd
, int *root_fd
);
635 int namespace_enter(int pidns_fd
, int mntns_fd
, int netns_fd
, int userns_fd
, int root_fd
);
637 int getpeercred(int fd
, struct ucred
*ucred
);
638 int getpeersec(int fd
, char **ret
);
640 int mkostemp_safe(char *pattern
, int flags
);
641 int open_tmpfile(const char *path
, int flags
);
643 int fd_warn_permissions(const char *path
, int fd
);
645 #ifndef PERSONALITY_INVALID
646 /* personality(7) documents that 0xffffffffUL is used for querying the
647 * current personality, hence let's use that here as error
649 #define PERSONALITY_INVALID 0xffffffffLU
652 unsigned long personality_from_string(const char *p
);
653 const char *personality_to_string(unsigned long);
655 uint64_t physical_memory(void);
657 void hexdump(FILE *f
, const void *p
, size_t s
);
659 union file_handle_union
{
660 struct file_handle handle
;
661 char padding
[sizeof(struct file_handle
) + MAX_HANDLE_SZ
];
663 #define FILE_HANDLE_INIT { .handle.handle_bytes = MAX_HANDLE_SZ }
665 int update_reboot_param_file(const char *param
);
667 int umount_recursive(const char *target
, int flags
);
669 int bind_remount_recursive(const char *prefix
, bool ro
);
671 int fflush_and_check(FILE *f
);
673 int tempfn_xxxxxx(const char *p
, const char *extra
, char **ret
);
674 int tempfn_random(const char *p
, const char *extra
, char **ret
);
675 int tempfn_random_child(const char *p
, const char *extra
, char **ret
);
677 int take_password_lock(const char *root
);
679 int is_symlink(const char *path
);
680 int is_dir(const char *path
, bool follow
);
681 int is_device_node(const char *path
);
683 #define INOTIFY_EVENT_MAX (sizeof(struct inotify_event) + NAME_MAX + 1)
685 #define FOREACH_INOTIFY_EVENT(e, buffer, sz) \
686 for ((e) = &buffer.ev; \
687 (uint8_t*) (e) < (uint8_t*) (buffer.raw) + (sz); \
688 (e) = (struct inotify_event*) ((uint8_t*) (e) + sizeof(struct inotify_event) + (e)->len))
690 union inotify_event_buffer
{
691 struct inotify_event ev
;
692 uint8_t raw
[INOTIFY_EVENT_MAX
];
695 #define laccess(path, mode) faccessat(AT_FDCWD, (path), (mode), AT_SYMLINK_NOFOLLOW)
697 ssize_t
fgetxattrat_fake(int dirfd
, const char *filename
, const char *attribute
, void *value
, size_t size
, int flags
);
699 int fd_setcrtime(int fd
, usec_t usec
);
700 int fd_getcrtime(int fd
, usec_t
*usec
);
701 int path_getcrtime(const char *p
, usec_t
*usec
);
702 int fd_getcrtime_at(int dirfd
, const char *name
, usec_t
*usec
, int flags
);
704 int chattr_fd(int fd
, unsigned value
, unsigned mask
);
705 int chattr_path(const char *p
, unsigned value
, unsigned mask
);
707 int read_attr_fd(int fd
, unsigned *ret
);
708 int read_attr_path(const char *p
, unsigned *ret
);
710 #define RLIMIT_MAKE_CONST(lim) ((struct rlimit) { lim, lim })
712 void sigkill_wait(pid_t
*pid
);
713 #define _cleanup_sigkill_wait_ _cleanup_(sigkill_wait)
715 int syslog_parse_priority(const char **p
, int *priority
, bool with_facility
);
717 int rename_noreplace(int olddirfd
, const char *oldpath
, int newdirfd
, const char *newpath
);
719 int parse_mode(const char *s
, mode_t
*ret
);
721 int mount_move_root(const char *path
);
723 int reset_uid_gid(void);
725 int getxattr_malloc(const char *path
, const char *name
, char **value
, bool allow_symlink
);
726 int fgetxattr_malloc(int fd
, const char *name
, char **value
);
728 int send_one_fd(int transport_fd
, int fd
, int flags
);
729 int receive_one_fd(int transport_fd
, int flags
);
731 void nop_signal_handler(int sig
);
735 bool fdname_is_valid(const char *s
);
737 bool oom_score_adjust_is_valid(int oa
);