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
142
143
144
145
146
147
148
149
150
151
152
153
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "sd-network.h"
#include "alloc-util.h"
#include "hashmap.h"
#include "link.h"
#include "manager.h"
#include "string-util.h"
int link_new(Manager *m, Link **ret, int ifindex, const char *ifname) {
_cleanup_(link_freep) Link *l = NULL;
_cleanup_free_ char *n = NULL;
int r;
assert(m);
assert(ifindex > 0);
r = hashmap_ensure_allocated(&m->links, NULL);
if (r < 0)
return r;
r = hashmap_ensure_allocated(&m->links_by_name, &string_hash_ops);
if (r < 0)
return r;
n = strdup(ifname);
if (!n)
return -ENOMEM;
l = new(Link, 1);
if (!l)
return -ENOMEM;
*l = (Link) {
.manager = m,
.ifname = TAKE_PTR(n),
.ifindex = ifindex,
.required_operstate = LINK_OPERSTATE_RANGE_DEFAULT,
};
r = hashmap_put(m->links_by_name, l->ifname, l);
if (r < 0)
return r;
r = hashmap_put(m->links, INT_TO_PTR(ifindex), l);
if (r < 0)
return r;
if (ret)
*ret = l;
TAKE_PTR(l);
return 0;
}
Link *link_free(Link *l) {
if (!l)
return NULL;
if (l->manager) {
hashmap_remove(l->manager->links, INT_TO_PTR(l->ifindex));
hashmap_remove(l->manager->links_by_name, l->ifname);
}
free(l->state);
free(l->ifname);
return mfree(l);
}
int link_update_rtnl(Link *l, sd_netlink_message *m) {
const char *ifname;
int r;
assert(l);
assert(l->manager);
assert(m);
r = sd_rtnl_message_link_get_flags(m, &l->flags);
if (r < 0)
return r;
r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname);
if (r < 0)
return r;
if (!streq(l->ifname, ifname)) {
char *new_ifname;
new_ifname = strdup(ifname);
if (!new_ifname)
return -ENOMEM;
assert_se(hashmap_remove(l->manager->links_by_name, l->ifname) == l);
free_and_replace(l->ifname, new_ifname);
r = hashmap_put(l->manager->links_by_name, l->ifname, l);
if (r < 0)
return r;
}
return 0;
}
int link_update_monitor(Link *l) {
_cleanup_free_ char *operstate = NULL, *required_operstate = NULL, *state = NULL;
int r, ret = 0;
assert(l);
assert(l->ifname);
r = sd_network_link_get_required_for_online(l->ifindex);
if (r < 0)
ret = log_link_debug_errno(l, r, "Failed to determine whether the link is required for online or not, "
"ignoring: %m");
else
l->required_for_online = r > 0;
r = sd_network_link_get_required_operstate_for_online(l->ifindex, &required_operstate);
if (r < 0)
ret = log_link_debug_errno(l, r, "Failed to get required operational state, ignoring: %m");
else if (isempty(required_operstate))
l->required_operstate = LINK_OPERSTATE_RANGE_DEFAULT;
else {
r = parse_operational_state_range(required_operstate, &l->required_operstate);
if (r < 0)
ret = log_link_debug_errno(l, SYNTHETIC_ERRNO(EINVAL),
"Failed to parse required operational state, ignoring: %m");
}
r = sd_network_link_get_operational_state(l->ifindex, &operstate);
if (r < 0)
ret = log_link_debug_errno(l, r, "Failed to get operational state, ignoring: %m");
else {
LinkOperationalState s;
s = link_operstate_from_string(operstate);
if (s < 0)
ret = log_link_debug_errno(l, SYNTHETIC_ERRNO(EINVAL),
"Failed to parse operational state, ignoring: %m");
else
l->operational_state = s;
}
r = sd_network_link_get_setup_state(l->ifindex, &state);
if (r < 0)
ret = log_link_debug_errno(l, r, "Failed to get setup state, ignoring: %m");
else
free_and_replace(l->state, state);
return ret;
}
|
