1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
2 #pragma once
3 
4 #include <stdbool.h>
5 
6 #include "hashmap.h"
7 #include "macro.h"
8 #include "set.h"
9 
10 typedef struct FDSet FDSet;
11 
12 FDSet* fdset_new(void);
13 FDSet* fdset_free(FDSet *s);
14 
15 int fdset_put(FDSet *s, int fd);
16 int fdset_put_dup(FDSet *s, int fd);
17 
18 bool fdset_contains(FDSet *s, int fd);
19 int fdset_remove(FDSet *s, int fd);
20 
21 int fdset_new_array(FDSet **ret, const int *fds, size_t n_fds);
22 int fdset_new_fill(FDSet **ret);
23 int fdset_new_listen_fds(FDSet **ret, bool unset);
24 
25 int fdset_cloexec(FDSet *fds, bool b);
26 
27 int fdset_close_others(FDSet *fds);
28 
29 unsigned fdset_size(FDSet *fds);
30 bool fdset_isempty(FDSet *fds);
31 
32 int fdset_iterate(FDSet *s, Iterator *i);
33 
34 int fdset_steal_first(FDSet *fds);
35 
36 void fdset_close(FDSet *fds);
37 
38 #define _FDSET_FOREACH(fd, fds, i) \
39         for (Iterator i = ITERATOR_FIRST; ((fd) = fdset_iterate((fds), &i)) >= 0; )
40 #define FDSET_FOREACH(fd, fds) \
41         _FDSET_FOREACH(fd, fds, UNIQ_T(i, UNIQ))
42 
43 DEFINE_TRIVIAL_CLEANUP_FUNC(FDSet*, fdset_free);
44 #define _cleanup_fdset_free_ _cleanup_(fdset_freep)
45