blob: 724d7f27d999ac2324f3af808aae84b568ce0900 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <sys/stat.h>
#include <sys/statvfs.h>
#include <sys/vfs.h>
#include "binfmt-util.h"
#include "fileio.h"
#include "missing_magic.h"
#include "stat-util.h"
int disable_binfmt(void) {
int r;
/* Flush out all rules. This is important during shutdown to cover for rules using "F", since those
* might pin a file and thus block us from unmounting stuff cleanly.
*
* We are a bit careful here, since binfmt_misc might still be an autofs which we don't want to
* trigger. */
r = path_is_fs_type("/proc/sys/fs/binfmt_misc", BINFMTFS_MAGIC);
if (r == 0 || r == -ENOENT) {
log_debug("binfmt_misc is not mounted, not detaching entries.");
return 0;
}
if (r < 0)
return log_warning_errno(r, "Failed to determine whether binfmt_misc is mounted: %m");
r = write_string_file("/proc/sys/fs/binfmt_misc/status", "-1", WRITE_STRING_FILE_DISABLE_BUFFER);
if (r < 0)
return log_warning_errno(r, "Failed to unregister binfmt_misc entries: %m");
log_debug("Unregistered all remaining binfmt_misc entries.");
return 0;
}
|
