2017-11-18 17:09:20 +01:00
|
|
|
/* SPDX-License-Identifier: LGPL-2.1+ */
|
2014-02-27 01:24:05 +01:00
|
|
|
|
|
|
|
#include <errno.h>
|
2015-02-12 14:06:32 +01:00
|
|
|
#include <poll.h>
|
2015-10-24 22:58:24 +02:00
|
|
|
#include <sys/inotify.h>
|
2014-02-27 01:24:05 +01:00
|
|
|
|
2015-10-24 22:58:24 +02:00
|
|
|
#include "sd-network.h"
|
|
|
|
|
2015-10-27 03:01:06 +01:00
|
|
|
#include "alloc-util.h"
|
2018-11-30 22:08:41 +01:00
|
|
|
#include "env-file.h"
|
2015-10-27 14:58:05 +01:00
|
|
|
#include "fd-util.h"
|
|
|
|
#include "fs-util.h"
|
2014-02-27 01:24:05 +01:00
|
|
|
#include "macro.h"
|
2015-10-27 14:58:05 +01:00
|
|
|
#include "parse-util.h"
|
2016-02-20 22:06:12 +01:00
|
|
|
#include "stdio-util.h"
|
2015-10-24 22:58:24 +02:00
|
|
|
#include "string-util.h"
|
2014-02-27 01:24:05 +01:00
|
|
|
#include "strv.h"
|
2015-10-24 22:58:24 +02:00
|
|
|
#include "util.h"
|
2014-02-27 01:24:05 +01:00
|
|
|
|
2019-06-09 21:56:03 +02:00
|
|
|
static int network_get_string(const char *field, char **ret) {
|
2014-08-12 15:05:21 +02:00
|
|
|
_cleanup_free_ char *s = NULL;
|
2014-05-07 16:35:05 +02:00
|
|
|
int r;
|
|
|
|
|
2019-06-09 21:56:03 +02:00
|
|
|
assert_return(ret, -EINVAL);
|
2014-02-27 01:24:05 +01:00
|
|
|
|
2019-06-09 21:56:03 +02:00
|
|
|
r = parse_env_file(NULL, "/run/systemd/netif/state", field, &s);
|
2014-02-28 02:07:29 +01:00
|
|
|
if (r == -ENOENT)
|
|
|
|
return -ENODATA;
|
2014-08-12 15:05:21 +02:00
|
|
|
if (r < 0)
|
2014-02-27 01:24:05 +01:00
|
|
|
return r;
|
2014-08-12 15:05:21 +02:00
|
|
|
if (isempty(s))
|
|
|
|
return -ENODATA;
|
2014-05-07 16:35:05 +02:00
|
|
|
|
2019-06-09 21:56:03 +02:00
|
|
|
*ret = TAKE_PTR(s);
|
2014-05-07 16:35:05 +02:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2019-06-09 21:56:03 +02:00
|
|
|
_public_ int sd_network_get_operational_state(char **state) {
|
|
|
|
return network_get_string("OPER_STATE", state);
|
|
|
|
}
|
|
|
|
|
|
|
|
_public_ int sd_network_get_carrier_state(char **state) {
|
|
|
|
return network_get_string("CARRIER_STATE", state);
|
|
|
|
}
|
|
|
|
|
|
|
|
_public_ int sd_network_get_address_state(char **state) {
|
|
|
|
return network_get_string("ADDRESS_STATE", state);
|
|
|
|
}
|
|
|
|
|
2014-08-12 15:05:21 +02:00
|
|
|
static int network_get_strv(const char *key, char ***ret) {
|
|
|
|
_cleanup_strv_free_ char **a = NULL;
|
2014-05-08 17:21:37 +02:00
|
|
|
_cleanup_free_ char *s = NULL;
|
|
|
|
int r;
|
|
|
|
|
2014-08-12 15:05:21 +02:00
|
|
|
assert_return(ret, -EINVAL);
|
|
|
|
|
2018-11-12 14:18:03 +01:00
|
|
|
r = parse_env_file(NULL, "/run/systemd/netif/state", key, &s);
|
2014-08-12 15:05:21 +02:00
|
|
|
if (r == -ENOENT)
|
|
|
|
return -ENODATA;
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
if (isempty(s)) {
|
|
|
|
*ret = NULL;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
a = strv_split(s, " ");
|
|
|
|
if (!a)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
strv_uniq(a);
|
tree-wide: be more careful with the type of array sizes
Previously we were a bit sloppy with the index and size types of arrays,
we'd regularly use unsigned. While I don't think this ever resulted in
real issues I think we should be more careful there and follow a
stricter regime: unless there's a strong reason not to use size_t for
array sizes and indexes, size_t it should be. Any allocations we do
ultimately will use size_t anyway, and converting forth and back between
unsigned and size_t will always be a source of problems.
Note that on 32bit machines "unsigned" and "size_t" are equivalent, and
on 64bit machines our arrays shouldn't grow that large anyway, and if
they do we have a problem, however that kind of overly large allocation
we have protections for usually, but for overflows we do not have that
so much, hence let's add it.
So yeah, it's a story of the current code being already "good enough",
but I think some extra type hygiene is better.
This patch tries to be comprehensive, but it probably isn't and I missed
a few cases. But I guess we can cover that later as we notice it. Among
smaller fixes, this changes:
1. strv_length()' return type becomes size_t
2. the unit file changes array size becomes size_t
3. DNS answer and query array sizes become size_t
Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=76745
2018-04-27 14:09:31 +02:00
|
|
|
r = (int) strv_length(a);
|
2014-08-12 15:05:21 +02:00
|
|
|
|
2018-03-22 16:53:26 +01:00
|
|
|
*ret = TAKE_PTR(a);
|
2014-08-12 15:05:21 +02:00
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
_public_ int sd_network_get_dns(char ***ret) {
|
|
|
|
return network_get_strv("DNS", ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
_public_ int sd_network_get_ntp(char ***ret) {
|
|
|
|
return network_get_strv("NTP", ret);
|
|
|
|
}
|
|
|
|
|
networkd: rework Domains= setting
Previously, .network files only knew a vaguely defined "Domains=" concept, for which the documentation declared it was
the "DNS domain" for the network connection, without specifying what that means.
With this the Domains setting is reworked, so that there are now "routing" domains and "search" domains. The former are
to be used by resolved to route DNS request to specific network interfaces, the latter is to be used for searching
single-label hostnames with (in addition to being used for routing). Both settings are configured in the "Domains="
setting. Normal domain names listed in it are now considered search domains (for compatibility with existing setups),
while those prefixed with "~" are considered routing domains only. To route all lookups to a specific interface the
routing domain "." may be used, referring to the root domain. An alternative syntax for this is the "*", as was already
implemented before using the "wildcard" domain concept.
This commit adds proper parsers for this new logic, and exposes this via the sd-network API. This information is not
used by resolved yet, this will be added in a later commit.
2016-01-25 19:46:00 +01:00
|
|
|
_public_ int sd_network_get_search_domains(char ***ret) {
|
2014-08-15 16:02:14 +02:00
|
|
|
return network_get_strv("DOMAINS", ret);
|
|
|
|
}
|
|
|
|
|
networkd: rework Domains= setting
Previously, .network files only knew a vaguely defined "Domains=" concept, for which the documentation declared it was
the "DNS domain" for the network connection, without specifying what that means.
With this the Domains setting is reworked, so that there are now "routing" domains and "search" domains. The former are
to be used by resolved to route DNS request to specific network interfaces, the latter is to be used for searching
single-label hostnames with (in addition to being used for routing). Both settings are configured in the "Domains="
setting. Normal domain names listed in it are now considered search domains (for compatibility with existing setups),
while those prefixed with "~" are considered routing domains only. To route all lookups to a specific interface the
routing domain "." may be used, referring to the root domain. An alternative syntax for this is the "*", as was already
implemented before using the "wildcard" domain concept.
This commit adds proper parsers for this new logic, and exposes this via the sd-network API. This information is not
used by resolved yet, this will be added in a later commit.
2016-01-25 19:46:00 +01:00
|
|
|
_public_ int sd_network_get_route_domains(char ***ret) {
|
|
|
|
return network_get_strv("ROUTE_DOMAINS", ret);
|
|
|
|
}
|
|
|
|
|
2016-01-05 16:43:07 +01:00
|
|
|
static int network_link_get_string(int ifindex, const char *field, char **ret) {
|
2017-12-14 19:02:29 +01:00
|
|
|
char path[STRLEN("/run/systemd/netif/links/") + DECIMAL_STR_MAX(ifindex) + 1];
|
2016-02-20 22:06:12 +01:00
|
|
|
_cleanup_free_ char *s = NULL;
|
2014-08-12 15:05:21 +02:00
|
|
|
int r;
|
|
|
|
|
|
|
|
assert_return(ifindex > 0, -EINVAL);
|
2016-01-05 16:43:07 +01:00
|
|
|
assert_return(ret, -EINVAL);
|
2014-05-08 17:21:37 +02:00
|
|
|
|
2016-02-20 22:06:12 +01:00
|
|
|
xsprintf(path, "/run/systemd/netif/links/%i", ifindex);
|
2014-08-12 15:05:21 +02:00
|
|
|
|
2018-11-12 14:18:03 +01:00
|
|
|
r = parse_env_file(NULL, path, field, &s);
|
2014-05-08 17:21:37 +02:00
|
|
|
if (r == -ENOENT)
|
|
|
|
return -ENODATA;
|
2014-08-12 15:05:21 +02:00
|
|
|
if (r < 0)
|
2014-05-08 17:21:37 +02:00
|
|
|
return r;
|
2014-08-12 15:05:21 +02:00
|
|
|
if (isempty(s))
|
|
|
|
return -ENODATA;
|
2014-05-08 17:21:37 +02:00
|
|
|
|
2018-03-22 16:53:26 +01:00
|
|
|
*ret = TAKE_PTR(s);
|
2014-05-08 17:21:37 +02:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2016-01-06 18:36:32 +01:00
|
|
|
static int network_link_get_strv(int ifindex, const char *key, char ***ret) {
|
2017-12-14 19:02:29 +01:00
|
|
|
char path[STRLEN("/run/systemd/netif/links/") + DECIMAL_STR_MAX(ifindex) + 1];
|
2016-01-06 18:36:32 +01:00
|
|
|
_cleanup_strv_free_ char **a = NULL;
|
2016-02-20 22:06:12 +01:00
|
|
|
_cleanup_free_ char *s = NULL;
|
2016-01-06 18:36:32 +01:00
|
|
|
int r;
|
|
|
|
|
|
|
|
assert_return(ifindex > 0, -EINVAL);
|
|
|
|
assert_return(ret, -EINVAL);
|
|
|
|
|
2016-02-20 22:06:12 +01:00
|
|
|
xsprintf(path, "/run/systemd/netif/links/%i", ifindex);
|
2018-11-12 14:18:03 +01:00
|
|
|
r = parse_env_file(NULL, path, key, &s);
|
2016-01-06 18:36:32 +01:00
|
|
|
if (r == -ENOENT)
|
|
|
|
return -ENODATA;
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
if (isempty(s)) {
|
|
|
|
*ret = NULL;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
a = strv_split(s, " ");
|
|
|
|
if (!a)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
strv_uniq(a);
|
tree-wide: be more careful with the type of array sizes
Previously we were a bit sloppy with the index and size types of arrays,
we'd regularly use unsigned. While I don't think this ever resulted in
real issues I think we should be more careful there and follow a
stricter regime: unless there's a strong reason not to use size_t for
array sizes and indexes, size_t it should be. Any allocations we do
ultimately will use size_t anyway, and converting forth and back between
unsigned and size_t will always be a source of problems.
Note that on 32bit machines "unsigned" and "size_t" are equivalent, and
on 64bit machines our arrays shouldn't grow that large anyway, and if
they do we have a problem, however that kind of overly large allocation
we have protections for usually, but for overflows we do not have that
so much, hence let's add it.
So yeah, it's a story of the current code being already "good enough",
but I think some extra type hygiene is better.
This patch tries to be comprehensive, but it probably isn't and I missed
a few cases. But I guess we can cover that later as we notice it. Among
smaller fixes, this changes:
1. strv_length()' return type becomes size_t
2. the unit file changes array size becomes size_t
3. DNS answer and query array sizes become size_t
Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=76745
2018-04-27 14:09:31 +02:00
|
|
|
r = (int) strv_length(a);
|
2016-01-06 18:36:32 +01:00
|
|
|
|
2018-03-22 16:53:26 +01:00
|
|
|
*ret = TAKE_PTR(a);
|
2016-01-06 18:36:32 +01:00
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2016-01-05 16:43:07 +01:00
|
|
|
_public_ int sd_network_link_get_setup_state(int ifindex, char **state) {
|
|
|
|
return network_link_get_string(ifindex, "ADMIN_STATE", state);
|
|
|
|
}
|
2014-09-08 13:50:52 +02:00
|
|
|
|
2016-01-05 16:43:07 +01:00
|
|
|
_public_ int sd_network_link_get_network_file(int ifindex, char **filename) {
|
|
|
|
return network_link_get_string(ifindex, "NETWORK_FILE", filename);
|
2014-09-08 13:50:52 +02:00
|
|
|
}
|
|
|
|
|
2014-08-13 22:37:45 +02:00
|
|
|
_public_ int sd_network_link_get_operational_state(int ifindex, char **state) {
|
2016-01-05 16:43:07 +01:00
|
|
|
return network_link_get_string(ifindex, "OPER_STATE", state);
|
2014-02-27 01:24:05 +01:00
|
|
|
}
|
|
|
|
|
2019-06-09 21:56:03 +02:00
|
|
|
_public_ int sd_network_link_get_carrier_state(int ifindex, char **state) {
|
|
|
|
return network_link_get_string(ifindex, "CARRIER_STATE", state);
|
|
|
|
}
|
|
|
|
|
|
|
|
_public_ int sd_network_link_get_address_state(int ifindex, char **state) {
|
|
|
|
return network_link_get_string(ifindex, "ADDRESS_STATE", state);
|
|
|
|
}
|
|
|
|
|
2020-06-09 10:49:38 +02:00
|
|
|
_public_ int sd_network_link_get_dhcp6_client_iaid_string(int ifindex, char **iaid) {
|
|
|
|
return network_link_get_string(ifindex, "DHCP6_CLIENT_IAID", iaid);
|
|
|
|
}
|
|
|
|
|
2020-06-09 16:49:12 +02:00
|
|
|
_public_ int sd_network_link_get_dhcp6_client_duid_string(int ifindex, char **duid) {
|
|
|
|
return network_link_get_string(ifindex, "DHCP6_CLIENT_DUID", duid);
|
|
|
|
}
|
|
|
|
|
2017-11-30 18:03:50 +01:00
|
|
|
_public_ int sd_network_link_get_required_for_online(int ifindex) {
|
|
|
|
_cleanup_free_ char *s = NULL;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
r = network_link_get_string(ifindex, "REQUIRED_FOR_ONLINE", &s);
|
|
|
|
if (r < 0) {
|
|
|
|
/* Handle -ENODATA as RequiredForOnline=yes, for compatibility */
|
|
|
|
if (r == -ENODATA)
|
|
|
|
return true;
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
return parse_boolean(s);
|
|
|
|
}
|
|
|
|
|
2019-03-06 06:45:17 +01:00
|
|
|
_public_ int sd_network_link_get_required_operstate_for_online(int ifindex, char **state) {
|
|
|
|
_cleanup_free_ char *s = NULL;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
assert_return(state, -EINVAL);
|
|
|
|
|
|
|
|
r = network_link_get_string(ifindex, "REQUIRED_OPER_STATE_FOR_ONLINE", &s);
|
|
|
|
if (r < 0) {
|
|
|
|
if (r != -ENODATA)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
/* For compatibility, assuming degraded. */
|
|
|
|
s = strdup("degraded");
|
|
|
|
if (!s)
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
*state = TAKE_PTR(s);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2014-08-13 22:37:45 +02:00
|
|
|
_public_ int sd_network_link_get_llmnr(int ifindex, char **llmnr) {
|
2016-01-05 16:43:07 +01:00
|
|
|
return network_link_get_string(ifindex, "LLMNR", llmnr);
|
2014-08-03 18:45:07 +02:00
|
|
|
}
|
|
|
|
|
2016-01-05 17:32:25 +01:00
|
|
|
_public_ int sd_network_link_get_mdns(int ifindex, char **mdns) {
|
|
|
|
return network_link_get_string(ifindex, "MDNS", mdns);
|
|
|
|
}
|
|
|
|
|
2018-06-13 20:26:24 +02:00
|
|
|
_public_ int sd_network_link_get_dns_over_tls(int ifindex, char **dns_over_tls) {
|
|
|
|
return network_link_get_string(ifindex, "DNS_OVER_TLS", dns_over_tls);
|
2018-05-04 17:31:16 +02:00
|
|
|
}
|
|
|
|
|
2016-01-05 19:57:33 +01:00
|
|
|
_public_ int sd_network_link_get_dnssec(int ifindex, char **dnssec) {
|
|
|
|
return network_link_get_string(ifindex, "DNSSEC", dnssec);
|
|
|
|
}
|
|
|
|
|
2016-01-06 18:36:32 +01:00
|
|
|
_public_ int sd_network_link_get_dnssec_negative_trust_anchors(int ifindex, char ***nta) {
|
|
|
|
return network_link_get_strv(ifindex, "DNSSEC_NTA", nta);
|
|
|
|
}
|
|
|
|
|
2014-08-13 22:37:45 +02:00
|
|
|
_public_ int sd_network_link_get_dns(int ifindex, char ***ret) {
|
2016-01-06 18:36:32 +01:00
|
|
|
return network_link_get_strv(ifindex, "DNS", ret);
|
2014-05-19 18:42:14 +02:00
|
|
|
}
|
|
|
|
|
2014-08-13 22:37:45 +02:00
|
|
|
_public_ int sd_network_link_get_ntp(int ifindex, char ***ret) {
|
2016-01-06 18:36:32 +01:00
|
|
|
return network_link_get_strv(ifindex, "NTP", ret);
|
2014-05-19 18:42:14 +02:00
|
|
|
}
|
|
|
|
|
2020-03-22 10:39:23 +01:00
|
|
|
_public_ int sd_network_link_get_sip(int ifindex, char ***ret) {
|
|
|
|
return network_link_get_strv(ifindex, "SIP", ret);
|
|
|
|
}
|
|
|
|
|
networkd: rework Domains= setting
Previously, .network files only knew a vaguely defined "Domains=" concept, for which the documentation declared it was
the "DNS domain" for the network connection, without specifying what that means.
With this the Domains setting is reworked, so that there are now "routing" domains and "search" domains. The former are
to be used by resolved to route DNS request to specific network interfaces, the latter is to be used for searching
single-label hostnames with (in addition to being used for routing). Both settings are configured in the "Domains="
setting. Normal domain names listed in it are now considered search domains (for compatibility with existing setups),
while those prefixed with "~" are considered routing domains only. To route all lookups to a specific interface the
routing domain "." may be used, referring to the root domain. An alternative syntax for this is the "*", as was already
implemented before using the "wildcard" domain concept.
This commit adds proper parsers for this new logic, and exposes this via the sd-network API. This information is not
used by resolved yet, this will be added in a later commit.
2016-01-25 19:46:00 +01:00
|
|
|
_public_ int sd_network_link_get_search_domains(int ifindex, char ***ret) {
|
2016-01-06 18:36:32 +01:00
|
|
|
return network_link_get_strv(ifindex, "DOMAINS", ret);
|
2014-08-14 20:35:37 +02:00
|
|
|
}
|
|
|
|
|
networkd: rework Domains= setting
Previously, .network files only knew a vaguely defined "Domains=" concept, for which the documentation declared it was
the "DNS domain" for the network connection, without specifying what that means.
With this the Domains setting is reworked, so that there are now "routing" domains and "search" domains. The former are
to be used by resolved to route DNS request to specific network interfaces, the latter is to be used for searching
single-label hostnames with (in addition to being used for routing). Both settings are configured in the "Domains="
setting. Normal domain names listed in it are now considered search domains (for compatibility with existing setups),
while those prefixed with "~" are considered routing domains only. To route all lookups to a specific interface the
routing domain "." may be used, referring to the root domain. An alternative syntax for this is the "*", as was already
implemented before using the "wildcard" domain concept.
This commit adds proper parsers for this new logic, and exposes this via the sd-network API. This information is not
used by resolved yet, this will be added in a later commit.
2016-01-25 19:46:00 +01:00
|
|
|
_public_ int sd_network_link_get_route_domains(int ifindex, char ***ret) {
|
|
|
|
return network_link_get_strv(ifindex, "ROUTE_DOMAINS", ret);
|
|
|
|
}
|
|
|
|
|
2018-12-04 13:47:53 +01:00
|
|
|
_public_ int sd_network_link_get_dns_default_route(int ifindex) {
|
|
|
|
char path[STRLEN("/run/systemd/netif/links/") + DECIMAL_STR_MAX(ifindex) + 1];
|
|
|
|
_cleanup_free_ char *s = NULL;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
assert_return(ifindex > 0, -EINVAL);
|
|
|
|
|
|
|
|
xsprintf(path, "/run/systemd/netif/links/%i", ifindex);
|
|
|
|
|
|
|
|
r = parse_env_file(NULL, path, "DNS_DEFAULT_ROUTE", &s);
|
|
|
|
if (r == -ENOENT)
|
|
|
|
return -ENODATA;
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
if (isempty(s))
|
|
|
|
return -ENODATA;
|
|
|
|
return parse_boolean(s);
|
|
|
|
}
|
|
|
|
|
2016-02-19 20:43:03 +01:00
|
|
|
static int network_link_get_ifindexes(int ifindex, const char *key, int **ret) {
|
2017-12-14 19:02:29 +01:00
|
|
|
char path[STRLEN("/run/systemd/netif/links/") + DECIMAL_STR_MAX(ifindex) + 1];
|
2016-02-19 20:43:03 +01:00
|
|
|
_cleanup_free_ int *ifis = NULL;
|
2016-02-20 22:06:12 +01:00
|
|
|
_cleanup_free_ char *s = NULL;
|
2016-02-19 20:43:03 +01:00
|
|
|
size_t allocated = 0, c = 0;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
assert_return(ifindex > 0, -EINVAL);
|
|
|
|
assert_return(ret, -EINVAL);
|
|
|
|
|
2016-02-20 22:06:12 +01:00
|
|
|
xsprintf(path, "/run/systemd/netif/links/%i", ifindex);
|
2018-11-12 14:18:03 +01:00
|
|
|
r = parse_env_file(NULL, path, key, &s);
|
2016-02-19 20:43:03 +01:00
|
|
|
if (r == -ENOENT)
|
|
|
|
return -ENODATA;
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
2019-12-18 13:54:13 +01:00
|
|
|
for (const char *x = s;;) {
|
2016-02-19 20:43:03 +01:00
|
|
|
_cleanup_free_ char *word = NULL;
|
|
|
|
|
|
|
|
r = extract_first_word(&x, &word, NULL, 0);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
if (r == 0)
|
|
|
|
break;
|
|
|
|
|
2016-11-11 18:58:41 +01:00
|
|
|
if (!GREEDY_REALLOC(ifis, allocated, c + 2))
|
2016-02-19 20:43:03 +01:00
|
|
|
return -ENOMEM;
|
|
|
|
|
2019-12-18 13:54:13 +01:00
|
|
|
r = ifis[c++] = parse_ifindex(word);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
2016-02-19 20:43:03 +01:00
|
|
|
}
|
|
|
|
|
2016-11-11 18:58:41 +01:00
|
|
|
if (ifis)
|
2017-02-24 18:14:02 +01:00
|
|
|
ifis[c] = 0; /* Let's add a 0 ifindex to the end, to be nice */
|
2016-02-19 20:43:03 +01:00
|
|
|
|
2018-03-22 16:53:26 +01:00
|
|
|
*ret = TAKE_PTR(ifis);
|
2016-02-19 20:43:03 +01:00
|
|
|
|
|
|
|
return c;
|
|
|
|
}
|
|
|
|
|
|
|
|
_public_ int sd_network_link_get_carrier_bound_to(int ifindex, int **ret) {
|
|
|
|
return network_link_get_ifindexes(ifindex, "CARRIER_BOUND_TO", ret);
|
2015-02-17 13:06:57 +01:00
|
|
|
}
|
|
|
|
|
2016-02-19 20:43:03 +01:00
|
|
|
_public_ int sd_network_link_get_carrier_bound_by(int ifindex, int **ret) {
|
|
|
|
return network_link_get_ifindexes(ifindex, "CARRIER_BOUND_BY", ret);
|
2015-02-17 13:06:57 +01:00
|
|
|
}
|
|
|
|
|
2019-01-15 08:12:28 +01:00
|
|
|
static int MONITOR_TO_FD(sd_network_monitor *m) {
|
2014-02-27 01:24:05 +01:00
|
|
|
return (int) (unsigned long) m - 1;
|
|
|
|
}
|
|
|
|
|
2019-01-15 08:12:28 +01:00
|
|
|
static sd_network_monitor* FD_TO_MONITOR(int fd) {
|
2014-02-27 01:24:05 +01:00
|
|
|
return (sd_network_monitor*) (unsigned long) (fd + 1);
|
|
|
|
}
|
|
|
|
|
2015-06-10 19:00:39 +02:00
|
|
|
static int monitor_add_inotify_watch(int fd) {
|
|
|
|
int k;
|
|
|
|
|
|
|
|
k = inotify_add_watch(fd, "/run/systemd/netif/links/", IN_MOVED_TO|IN_DELETE);
|
|
|
|
if (k >= 0)
|
|
|
|
return 0;
|
|
|
|
else if (errno != ENOENT)
|
|
|
|
return -errno;
|
|
|
|
|
|
|
|
k = inotify_add_watch(fd, "/run/systemd/netif/", IN_CREATE|IN_ISDIR);
|
|
|
|
if (k >= 0)
|
|
|
|
return 0;
|
|
|
|
else if (errno != ENOENT)
|
|
|
|
return -errno;
|
|
|
|
|
|
|
|
k = inotify_add_watch(fd, "/run/systemd/", IN_CREATE|IN_ISDIR);
|
|
|
|
if (k < 0)
|
|
|
|
return -errno;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2014-07-17 01:07:17 +02:00
|
|
|
_public_ int sd_network_monitor_new(sd_network_monitor **m, const char *category) {
|
2015-06-10 19:00:39 +02:00
|
|
|
_cleanup_close_ int fd = -1;
|
|
|
|
int k;
|
2014-02-27 01:24:05 +01:00
|
|
|
bool good = false;
|
|
|
|
|
|
|
|
assert_return(m, -EINVAL);
|
|
|
|
|
|
|
|
fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
|
|
|
|
if (fd < 0)
|
|
|
|
return -errno;
|
|
|
|
|
2014-04-29 22:27:29 +02:00
|
|
|
if (!category || streq(category, "links")) {
|
2015-06-10 19:00:39 +02:00
|
|
|
k = monitor_add_inotify_watch(fd);
|
|
|
|
if (k < 0)
|
|
|
|
return k;
|
2014-02-27 01:24:05 +01:00
|
|
|
|
|
|
|
good = true;
|
|
|
|
}
|
|
|
|
|
2015-06-11 10:37:15 +02:00
|
|
|
if (!good)
|
2014-02-27 01:24:05 +01:00
|
|
|
return -EINVAL;
|
|
|
|
|
2020-09-22 17:33:06 +02:00
|
|
|
*m = FD_TO_MONITOR(TAKE_FD(fd));
|
2014-02-27 01:24:05 +01:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
_public_ sd_network_monitor* sd_network_monitor_unref(sd_network_monitor *m) {
|
2020-09-22 17:33:06 +02:00
|
|
|
if (m)
|
|
|
|
close_nointr(MONITOR_TO_FD(m));
|
2014-02-27 01:24:05 +01:00
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
_public_ int sd_network_monitor_flush(sd_network_monitor *m) {
|
2015-06-10 19:00:39 +02:00
|
|
|
union inotify_event_buffer buffer;
|
|
|
|
struct inotify_event *e;
|
|
|
|
ssize_t l;
|
|
|
|
int fd, k;
|
2014-02-27 01:24:05 +01:00
|
|
|
|
|
|
|
assert_return(m, -EINVAL);
|
|
|
|
|
2015-06-10 19:00:39 +02:00
|
|
|
fd = MONITOR_TO_FD(m);
|
|
|
|
|
|
|
|
l = read(fd, &buffer, sizeof(buffer));
|
|
|
|
if (l < 0) {
|
2017-09-28 10:17:04 +02:00
|
|
|
if (IN_SET(errno, EAGAIN, EINTR))
|
2015-06-10 19:00:39 +02:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
return -errno;
|
|
|
|
}
|
|
|
|
|
|
|
|
FOREACH_INOTIFY_EVENT(e, buffer, l) {
|
|
|
|
if (e->mask & IN_ISDIR) {
|
|
|
|
k = monitor_add_inotify_watch(fd);
|
|
|
|
if (k < 0)
|
|
|
|
return k;
|
|
|
|
|
|
|
|
k = inotify_rm_watch(fd, e->wd);
|
|
|
|
if (k < 0)
|
|
|
|
return -errno;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
2014-02-27 01:24:05 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
_public_ int sd_network_monitor_get_fd(sd_network_monitor *m) {
|
|
|
|
|
|
|
|
assert_return(m, -EINVAL);
|
|
|
|
|
|
|
|
return MONITOR_TO_FD(m);
|
|
|
|
}
|
|
|
|
|
|
|
|
_public_ int sd_network_monitor_get_events(sd_network_monitor *m) {
|
|
|
|
|
|
|
|
assert_return(m, -EINVAL);
|
|
|
|
|
|
|
|
/* For now we will only return POLLIN here, since we don't
|
|
|
|
* need anything else ever for inotify. However, let's have
|
|
|
|
* this API to keep our options open should we later on need
|
|
|
|
* it. */
|
|
|
|
return POLLIN;
|
|
|
|
}
|
|
|
|
|
|
|
|
_public_ int sd_network_monitor_get_timeout(sd_network_monitor *m, uint64_t *timeout_usec) {
|
|
|
|
|
|
|
|
assert_return(m, -EINVAL);
|
|
|
|
assert_return(timeout_usec, -EINVAL);
|
|
|
|
|
|
|
|
/* For now we will only return (uint64_t) -1, since we don't
|
|
|
|
* need any timeout. However, let's have this API to keep our
|
|
|
|
* options open should we later on need it. */
|
|
|
|
*timeout_usec = (uint64_t) -1;
|
|
|
|
return 0;
|
|
|
|
}
|