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1 | /* SPDX-License-Identifier: LGPL-2.1+ */ | |
2 | /*** | |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2013 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
21 | #if HAVE_VALGRIND_MEMCHECK_H | |
22 | #include <valgrind/memcheck.h> | |
23 | #endif | |
24 | ||
25 | #include <fcntl.h> | |
26 | #include <malloc.h> | |
27 | #include <sys/mman.h> | |
28 | #include <sys/prctl.h> | |
29 | ||
30 | /* When we include libgen.h because we need dirname() we immediately | |
31 | * undefine basename() since libgen.h defines it as a macro to the POSIX | |
32 | * version which is really broken. We prefer GNU basename(). */ | |
33 | #include <libgen.h> | |
34 | #undef basename | |
35 | ||
36 | #include "alloc-util.h" | |
37 | #include "bus-internal.h" | |
38 | #include "bus-kernel.h" | |
39 | #include "bus-label.h" | |
40 | #include "bus-message.h" | |
41 | #include "bus-util.h" | |
42 | #include "capability-util.h" | |
43 | #include "fd-util.h" | |
44 | #include "fileio.h" | |
45 | #include "format-util.h" | |
46 | #include "memfd-util.h" | |
47 | #include "parse-util.h" | |
48 | #include "stdio-util.h" | |
49 | #include "string-util.h" | |
50 | #include "strv.h" | |
51 | #include "user-util.h" | |
52 | #include "util.h" | |
53 | ||
54 | void close_and_munmap(int fd, void *address, size_t size) { | |
55 | if (size > 0) | |
56 | assert_se(munmap(address, PAGE_ALIGN(size)) >= 0); | |
57 | ||
58 | safe_close(fd); | |
59 | } | |
60 | ||
61 | void bus_flush_memfd(sd_bus *b) { | |
62 | unsigned i; | |
63 | ||
64 | assert(b); | |
65 | ||
66 | for (i = 0; i < b->n_memfd_cache; i++) | |
67 | close_and_munmap(b->memfd_cache[i].fd, b->memfd_cache[i].address, b->memfd_cache[i].mapped); | |
68 | } |