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
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/* SPDX-License-Identifier: LGPL-2.1+ */
/***
Copyright © 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
***/
#include <errno.h>
#include <sched.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/mount.h>
#include <sys/signalfd.h>
#include <unistd.h>
#include "device-private.h"
#include "fs-util.h"
#include "log.h"
#include "main-func.h"
#include "missing.h"
#include "mkdir.h"
#include "selinux-util.h"
#include "signal-util.h"
#include "string-util.h"
#include "tests.h"
#include "udev.h"
static int fake_filesystems(void) {
static const struct fakefs {
const char *src;
const char *target;
const char *error;
bool ignore_mount_error;
} fakefss[] = {
{ "test/tmpfs/sys", "/sys", "Failed to mount test /sys", false },
{ "test/tmpfs/dev", "/dev", "Failed to mount test /dev", false },
{ "test/run", "/run", "Failed to mount test /run", false },
{ "test/run", "/etc/udev/rules.d", "Failed to mount empty /etc/udev/rules.d", true },
{ "test/run", UDEVLIBEXECDIR "/rules.d", "Failed to mount empty " UDEVLIBEXECDIR "/rules.d", true },
};
unsigned i;
if (unshare(CLONE_NEWNS) < 0)
return log_error_errno(errno, "Failed to call unshare(): %m");
if (mount(NULL, "/", NULL, MS_SLAVE|MS_REC, NULL) < 0)
return log_error_errno(errno, "Failed to mount / as private: %m");
for (i = 0; i < ELEMENTSOF(fakefss); i++)
if (mount(fakefss[i].src, fakefss[i].target, NULL, MS_BIND, NULL) < 0) {
log_full_errno(fakefss[i].ignore_mount_error ? LOG_DEBUG : LOG_ERR, errno, "%s: %m", fakefss[i].error);
if (!fakefss[i].ignore_mount_error)
return -errno;
}
return 0;
}
static int run(int argc, char *argv[]) {
_cleanup_(udev_rules_freep) struct udev_rules *rules = NULL;
_cleanup_(udev_event_freep) struct udev_event *event = NULL;
_cleanup_(sd_device_unrefp) sd_device *dev = NULL;
const char *devpath, *devname, *action;
int r;
test_setup_logging(LOG_INFO);
if (!IN_SET(argc, 2, 3)) {
log_error("This program needs one or two arguments, %d given", argc - 1);
return -EINVAL;
}
r = fake_filesystems();
if (r < 0)
return r;
if (argc == 2) {
if (!streq(argv[1], "check")) {
log_error("Unknown argument: %s", argv[1]);
return -EINVAL;
}
return 0;
}
log_debug("version %s", PACKAGE_VERSION);
mac_selinux_init();
action = argv[1];
devpath = argv[2];
rules = udev_rules_new(RESOLVE_NAME_EARLY);
const char *syspath = strjoina("/sys", devpath);
r = device_new_from_synthetic_event(&dev, syspath, action);
if (r < 0)
return log_debug_errno(r, "Failed to open device '%s'", devpath);
assert_se(event = udev_event_new(dev, 0, NULL));
assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, SIGHUP, SIGCHLD, -1) >= 0);
/* do what devtmpfs usually provides us */
if (sd_device_get_devname(dev, &devname) >= 0) {
const char *subsystem;
mode_t mode = 0600;
if (sd_device_get_subsystem(dev, &subsystem) >= 0 && streq(subsystem, "block"))
mode |= S_IFBLK;
else
mode |= S_IFCHR;
if (!streq(action, "remove")) {
dev_t devnum = makedev(0, 0);
(void) mkdir_parents_label(devname, 0755);
(void) sd_device_get_devnum(dev, &devnum);
if (mknod(devname, mode, devnum) < 0)
return log_error_errno(errno, "mknod() failed for '%s': %m", devname);
} else {
if (unlink(devname) < 0)
return log_error_errno(errno, "unlink('%s') failed: %m", devname);
(void) rmdir_parents(devname, "/");
}
}
udev_event_execute_rules(event, 3 * USEC_PER_SEC, NULL, rules);
udev_event_execute_run(event, 3 * USEC_PER_SEC);
return 0;
}
DEFINE_MAIN_FUNCTION(run);
|
GitWeb