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
132
133
134
135
136
137
138
139
140
141
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "device-private.h"
#include "device-util.h"
#include "devnum-util.h"
#include "fd-util.h"
#include "string-util.h"
#include "strv.h"
int devname_from_devnum(mode_t mode, dev_t devnum, char **ret) {
_cleanup_(sd_device_unrefp) sd_device *dev = NULL;
_cleanup_free_ char *s = NULL;
const char *devname;
int r;
assert(ret);
if (devnum_is_zero(devnum))
return device_path_make_inaccessible(mode, ret);
r = device_new_from_mode_and_devnum(&dev, mode, devnum);
if (r < 0)
return r;
r = sd_device_get_devname(dev, &devname);
if (r < 0)
return r;
s = strdup(devname);
if (!s)
return -ENOMEM;
*ret = TAKE_PTR(s);
return 0;
}
int device_open_from_devnum(mode_t mode, dev_t devnum, int flags, char **ret) {
_cleanup_(sd_device_unrefp) sd_device *dev = NULL;
_cleanup_close_ int fd = -EBADF;
int r;
r = device_new_from_mode_and_devnum(&dev, mode, devnum);
if (r < 0)
return r;
fd = sd_device_open(dev, flags);
if (fd < 0)
return fd;
if (ret) {
const char *devname;
char *s;
r = sd_device_get_devname(dev, &devname);
if (r < 0)
return r;
s = strdup(devname);
if (!s)
return -ENOMEM;
*ret = s;
}
return TAKE_FD(fd);
}
static int add_string_field(
sd_device *device,
const char *field,
int (*func)(sd_device *dev, const char **s),
char ***strv) {
const char *s;
int r;
assert(device);
assert(field);
assert(func);
assert(strv);
r = func(device, &s);
if (r < 0 && r != -ENOENT)
log_device_debug_errno(device, r, "Failed to get device \"%s\" property, ignoring: %m", field);
if (r >= 0)
(void) strv_extend_assignment(strv, field, s);
return 0;
}
char** device_make_log_fields(sd_device *device) {
_cleanup_strv_free_ char **strv = NULL;
dev_t devnum;
int ifindex;
sd_device_action_t action;
uint64_t seqnum, diskseq;
int r;
assert(device);
(void) add_string_field(device, "SYSPATH", sd_device_get_syspath, &strv);
(void) add_string_field(device, "SUBSYSTEM", sd_device_get_subsystem, &strv);
(void) add_string_field(device, "DEVTYPE", sd_device_get_devtype, &strv);
(void) add_string_field(device, "DRIVER", sd_device_get_driver, &strv);
(void) add_string_field(device, "DEVPATH", sd_device_get_devpath, &strv);
(void) add_string_field(device, "DEVNAME", sd_device_get_devname, &strv);
(void) add_string_field(device, "SYSNAME", sd_device_get_sysname, &strv);
(void) add_string_field(device, "SYSNUM", sd_device_get_sysnum, &strv);
r = sd_device_get_devnum(device, &devnum);
if (r < 0 && r != -ENOENT)
log_device_debug_errno(device, r, "Failed to get device \"DEVNUM\" property, ignoring: %m");
if (r >= 0)
(void) strv_extendf(&strv, "DEVNUM="DEVNUM_FORMAT_STR, DEVNUM_FORMAT_VAL(devnum));
r = sd_device_get_ifindex(device, &ifindex);
if (r < 0 && r != -ENOENT)
log_device_debug_errno(device, r, "Failed to get device \"IFINDEX\" property, ignoring: %m");
if (r >= 0)
(void) strv_extendf(&strv, "IFINDEX=%i", ifindex);
r = sd_device_get_action(device, &action);
if (r < 0 && r != -ENOENT)
log_device_debug_errno(device, r, "Failed to get device \"ACTION\" property, ignoring: %m");
if (r >= 0)
(void) strv_extendf(&strv, "ACTION=%s", device_action_to_string(action));
r = sd_device_get_seqnum(device, &seqnum);
if (r < 0 && r != -ENOENT)
log_device_debug_errno(device, r, "Failed to get device \"SEQNUM\" property, ignoring: %m");
if (r >= 0)
(void) strv_extendf(&strv, "SEQNUM=%"PRIu64, seqnum);
r = sd_device_get_diskseq(device, &diskseq);
if (r < 0 && r != -ENOENT)
log_device_debug_errno(device, r, "Failed to get device \"DISKSEQ\" property, ignoring: %m");
if (r >= 0)
(void) strv_extendf(&strv, "DISKSEQ=%"PRIu64, diskseq);
return TAKE_PTR(strv);
}
|
