[systemd-commits] 4 commits - src/libsystemd src/network src/shared src/systemd src/timesync
Lennart Poettering
lennart at kemper.freedesktop.org
Tue Aug 12 06:23:27 PDT 2014
src/libsystemd/sd-network/sd-network.c | 89 +++++++--
src/network/networkctl.c | 295 +++++++++++++++++++--------------
src/shared/socket-util.c | 16 +
src/shared/socket-util.h | 2
src/systemd/sd-network.h | 20 +-
src/timesync/timesyncd.c | 16 -
6 files changed, 272 insertions(+), 166 deletions(-)
New commits:
commit 9085f64a6694f2928c79fcce365edb1dca6937d4
Author: Lennart Poettering <lennart at poettering.net>
Date: Tue Aug 12 15:19:30 2014 +0200
networkctl: add new switch "-a" to "networkctl status" to show verbose status of all local links
diff --git a/src/network/networkctl.c b/src/network/networkctl.c
index 7ae8804..2da5c83 100644
--- a/src/network/networkctl.c
+++ b/src/network/networkctl.c
@@ -36,6 +36,7 @@
static bool arg_no_pager = false;
static bool arg_legend = true;
+static bool arg_all = false;
static void pager_open_if_enabled(void) {
@@ -208,13 +209,137 @@ static void dump_list(const char *prefix, char **l) {
}
}
+static int link_status_one(sd_rtnl *rtnl, struct udev *udev, const char *name) {
+ _cleanup_strv_free_ char **dns = NULL, **ntp = NULL;
+ _cleanup_free_ char *state = NULL, *operational_state = NULL;
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
+ _cleanup_udev_device_unref_ struct udev_device *d = NULL;
+ char devid[2 + DECIMAL_STR_MAX(int)];
+ _cleanup_free_ char *t = NULL;
+ const char *driver = NULL, *path = NULL, *vendor = NULL, *model = NULL;
+ struct ether_addr e;
+ unsigned iftype;
+ int r, ifindex;
+ bool have_mac;
+ uint32_t mtu;
+
+ assert(rtnl);
+ assert(udev);
+ assert(name);
+
+ if (safe_atoi(name, &ifindex) >= 0 && ifindex > 0)
+ r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, ifindex);
+ else {
+ r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);
+ if (r < 0)
+ return rtnl_log_create_error(r);
+
+ r = sd_rtnl_message_append_string(req, IFLA_IFNAME, name);
+ }
+
+ if (r < 0)
+ return rtnl_log_create_error(r);
+
+ r = sd_rtnl_call(rtnl, req, 0, &reply);
+ if (r < 0) {
+ log_error("Failed to query link: %s", strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_link_get_ifindex(reply, &ifindex);
+ if (r < 0)
+ return rtnl_log_parse_error(r);
+
+ r = sd_rtnl_message_read_string(reply, IFLA_IFNAME, &name);
+ if (r < 0)
+ return rtnl_log_parse_error(r);
+
+ r = sd_rtnl_message_link_get_type(reply, &iftype);
+ if (r < 0)
+ return rtnl_log_parse_error(r);
+
+ have_mac = sd_rtnl_message_read_ether_addr(reply, IFLA_ADDRESS, &e) >= 0;
+
+ if (have_mac) {
+ const uint8_t *p;
+ bool all_zeroes = true;
+
+ for (p = (uint8_t*) &e; p < (uint8_t*) &e + sizeof(e); p++)
+ if (*p != 0) {
+ all_zeroes = false;
+ break;
+ }
+
+ if (all_zeroes)
+ have_mac = false;
+ }
+
+ sd_rtnl_message_read_u32(reply, IFLA_MTU, &mtu);
+
+ sd_network_get_link_state(ifindex, &state);
+ sd_network_get_link_operational_state(ifindex, &operational_state);
+
+ sd_network_get_link_dns(ifindex, &dns);
+ sd_network_get_link_ntp(ifindex, &ntp);
+
+ sprintf(devid, "n%i", ifindex);
+ d = udev_device_new_from_device_id(udev, devid);
+
+ link_get_type_string(iftype, d, &t);
+
+ if (d) {
+ driver = udev_device_get_property_value(d, "ID_NET_DRIVER");
+ path = udev_device_get_property_value(d, "ID_PATH");
+
+ vendor = udev_device_get_property_value(d, "ID_VENDOR_FROM_DATABASE");
+ if (!vendor)
+ vendor = udev_device_get_property_value(d, "ID_VENDOR");
+
+ model = udev_device_get_property_value(d, "ID_MODEL_FROM_DATABASE");
+ if (!model)
+ model = udev_device_get_property_value(d, "ID_MODEL");
+ }
+
+ printf("%i: %s\n", ifindex, name);
+
+ printf(" Type: %s\n"
+ " State: %s (%s)\n",
+ strna(t),
+ strna(operational_state),
+ strna(state));
+
+ if (path)
+ printf(" Path: %s\n", path);
+ if (driver)
+ printf(" Driver: %s\n", driver);
+ if (vendor)
+ printf(" Vendor: %s\n", vendor);
+ if (model)
+ printf(" Model: %s\n", model);
+
+ if (have_mac)
+ printf(" HW Address: %s\n", ether_ntoa(&e));
+
+ if (mtu > 0)
+ printf(" MTU: %u\n", mtu);
+
+ dump_addresses(rtnl, " Address: ", ifindex);
+
+ if (!strv_isempty(dns))
+ dump_list(" DNS: ", dns);
+ if (!strv_isempty(ntp))
+ dump_list(" NTP: ", ntp);
+
+ return 0;
+}
+
static int link_status(char **args, unsigned n) {
_cleanup_udev_unref_ struct udev *udev = NULL;
_cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
char **name;
int r;
- if (n <= 1) {
+ if (n <= 1 && !arg_all) {
_cleanup_free_ char *operational_state = NULL;
_cleanup_strv_free_ char **dns = NULL, **ntp = NULL;
@@ -247,126 +372,53 @@ static int link_status(char **args, unsigned n) {
return -errno;
}
- STRV_FOREACH(name, args + 1) {
- _cleanup_strv_free_ char **dns = NULL, **ntp = NULL;
- _cleanup_free_ char *state = NULL, *operational_state = NULL;
+ if (arg_all) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
- _cleanup_udev_device_unref_ struct udev_device *d = NULL;
- const char *canonical_name = NULL;
- char devid[2 + DECIMAL_STR_MAX(int)];
- int ifindex, canonical_ifindex;
- _cleanup_free_ char *t = NULL;
- const char *driver = NULL, *path = NULL, *vendor = NULL, *model = NULL;
- struct ether_addr e;
- unsigned iftype;
- bool have_mac;
- uint32_t mtu;
-
- if (name != args+1)
- printf("\n");
-
- if (safe_atoi(*name, &ifindex) >= 0 && ifindex > 0)
- r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, ifindex);
- else {
- r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);
- if (r < 0)
- return rtnl_log_create_error(r);
+ sd_rtnl_message *i;
+ bool space = false;
+ uint16_t type;
- r = sd_rtnl_message_append_string(req, IFLA_IFNAME, *name);
- }
+ r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);
+ if (r < 0)
+ return rtnl_log_create_error(r);
+ r = sd_rtnl_message_request_dump(req, true);
if (r < 0)
return rtnl_log_create_error(r);
r = sd_rtnl_call(rtnl, req, 0, &reply);
if (r < 0) {
- log_error("Failed to query link: %s", strerror(-r));
- continue;
- }
-
- r = sd_rtnl_message_link_get_ifindex(reply, &canonical_ifindex);
- if (r < 0)
- return rtnl_log_parse_error(r);
-
- r = sd_rtnl_message_read_string(reply, IFLA_IFNAME, &canonical_name);
- if (r < 0)
- return rtnl_log_parse_error(r);
-
- r = sd_rtnl_message_link_get_type(reply, &iftype);
- if (r < 0)
- return rtnl_log_parse_error(r);
-
- have_mac = sd_rtnl_message_read_ether_addr(reply, IFLA_ADDRESS, &e) >= 0;
-
- if (have_mac) {
- const uint8_t *p;
- bool all_zeroes = true;
-
- for (p = (uint8_t*) &e; p < (uint8_t*) &e + sizeof(e); p++)
- if (*p != 0) {
- all_zeroes = false;
- break;
- }
-
- if (all_zeroes)
- have_mac = false;
+ log_error("Failed to enumerate links: %s", strerror(-r));
+ return r;
}
- sd_rtnl_message_read_u32(reply, IFLA_MTU, &mtu);
-
- sd_network_get_link_state(canonical_ifindex, &state);
- sd_network_get_link_operational_state(canonical_ifindex, &operational_state);
-
- sd_network_get_link_dns(canonical_ifindex, &dns);
- sd_network_get_link_ntp(canonical_ifindex, &ntp);
+ for (i = reply; i; i = sd_rtnl_message_next(i)) {
+ const char *nn;
- sprintf(devid, "n%i", canonical_ifindex);
- d = udev_device_new_from_device_id(udev, devid);
+ r = sd_rtnl_message_get_type(i, &type);
+ if (r < 0)
+ return rtnl_log_parse_error(r);
- link_get_type_string(iftype, d, &t);
+ if (type != RTM_NEWLINK)
+ continue;
- if (d) {
- driver = udev_device_get_property_value(d, "ID_NET_DRIVER");
- path = udev_device_get_property_value(d, "ID_PATH");
+ r = sd_rtnl_message_read_string(i, IFLA_IFNAME, &nn);
+ if (r < 0)
+ return rtnl_log_parse_error(r);
- vendor = udev_device_get_property_value(d, "ID_VENDOR_FROM_DATABASE");
- if (!vendor)
- vendor = udev_device_get_property_value(d, "ID_VENDOR");
+ if (space)
+ fputc('\n', stdout);
- model = udev_device_get_property_value(d, "ID_MODEL_FROM_DATABASE");
- if (!model)
- model = udev_device_get_property_value(d, "ID_MODEL");
+ link_status_one(rtnl, udev, nn);
+ space = true;
}
+ }
- printf("%i: %s\n", canonical_ifindex, canonical_name);
-
- printf(" Type: %s\n"
- " State: %s (%s)\n",
- strna(t),
- strna(operational_state),
- strna(state));
-
- if (path)
- printf(" Path: %s\n", path);
- if (driver)
- printf(" Driver: %s\n", driver);
- if (vendor)
- printf(" Vendor: %s\n", vendor);
- if (model)
- printf(" Model: %s\n", model);
-
- if (have_mac)
- printf(" HW Address: %s\n", ether_ntoa(&e));
-
- if (mtu > 0)
- printf(" MTU: %u\n", mtu);
-
- dump_addresses(rtnl, " Address: ", canonical_ifindex);
+ STRV_FOREACH(name, args + 1) {
+ if (name != args+1)
+ fputc('\n', stdout);
- if (!strv_isempty(dns))
- dump_list(" DNS: ", dns);
- if (!strv_isempty(ntp))
- dump_list(" NTP: ", ntp);
+ link_status_one(rtnl, udev, *name);
}
return 0;
@@ -376,7 +428,10 @@ static void help(void) {
printf("%s [OPTIONS...]\n\n"
"Query and control the networking subsystem.\n\n"
" -h --help Show this help\n"
- " --version Show package version\n\n"
+ " --version Show package version\n"
+ " --no-pager Do not pipe output into a pager\n"
+ " --no-legend Do not show the headers and footers\n"
+ " -a --all Show status for all links\n\n"
"Commands:\n"
" list List links\n"
" status LINK Show link status\n"
@@ -396,6 +451,7 @@ static int parse_argv(int argc, char *argv[]) {
{ "version", no_argument, NULL, ARG_VERSION },
{ "no-pager", no_argument, NULL, ARG_NO_PAGER },
{ "no-legend", no_argument, NULL, ARG_NO_LEGEND },
+ { "all", no_argument, NULL, 'a' },
{}
};
@@ -404,7 +460,7 @@ static int parse_argv(int argc, char *argv[]) {
assert(argc >= 0);
assert(argv);
- while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
+ while ((c = getopt_long(argc, argv, "ha", options, NULL)) >= 0) {
switch (c) {
@@ -425,6 +481,10 @@ static int parse_argv(int argc, char *argv[]) {
arg_legend = false;
break;
+ case 'a':
+ arg_all = true;
+ break;
+
case '?':
return -EINVAL;
commit 1b17f21198e79cabe9e196cff69a9d96653bcdd3
Author: Lennart Poettering <lennart at poettering.net>
Date: Tue Aug 12 15:08:09 2014 +0200
networkctl: properly format MAC addresses
diff --git a/src/network/networkctl.c b/src/network/networkctl.c
index d5d3c80..7ae8804 100644
--- a/src/network/networkctl.c
+++ b/src/network/networkctl.c
@@ -355,15 +355,8 @@ static int link_status(char **args, unsigned n) {
if (model)
printf(" Model: %s\n", model);
- if (have_mac) {
- _cleanup_free_ char *h = NULL;
-
- h = hexmem(&e, sizeof(e));
- if (!h)
- return log_oom();
-
- printf(" HW Address: %s\n", h);
- }
+ if (have_mac)
+ printf(" HW Address: %s\n", ether_ntoa(&e));
if (mtu > 0)
printf(" MTU: %u\n", mtu);
commit 03cc0fd1431b82e59c11ae12a274c1f2df23169d
Author: Lennart Poettering <lennart at poettering.net>
Date: Tue Aug 12 15:05:21 2014 +0200
sd-network: add API to output all collected system-wide NTP and DNS servers
Also, output the collected information in "networkctl".
diff --git a/src/libsystemd/sd-network/sd-network.c b/src/libsystemd/sd-network/sd-network.c
index 6375788..d2e608c 100644
--- a/src/libsystemd/sd-network/sd-network.c
+++ b/src/libsystemd/sd-network/sd-network.c
@@ -34,26 +34,19 @@
#include "sd-network.h"
#include "network-internal.h"
-_public_ int sd_network_get_link_state(int ifindex, char **state) {
- _cleanup_free_ char *s = NULL, *p = NULL;
+_public_ int sd_network_get_operational_state(char **state) {
+ _cleanup_free_ char *s = NULL;
int r;
- assert_return(ifindex > 0, -EINVAL);
assert_return(state, -EINVAL);
- if (asprintf(&p, "/run/systemd/netif/links/%d", ifindex) < 0)
- return -ENOMEM;
-
- r = parse_env_file(p, NEWLINE, "ADMIN_STATE", &s, NULL);
+ r = parse_env_file("/run/systemd/netif/state", NEWLINE, "OPER_STATE", &s, NULL);
if (r == -ENOENT)
return -ENODATA;
- else if (r < 0)
+ if (r < 0)
return r;
- else if (!s)
- return -EIO;
-
- if (streq(s, "initializing"))
- return -EBUSY;
+ if (isempty(s))
+ return -ENODATA;
*state = s;
s = NULL;
@@ -61,20 +54,63 @@ _public_ int sd_network_get_link_state(int ifindex, char **state) {
return 0;
}
-_public_ int sd_network_get_operational_state(char **state) {
+static int network_get_strv(const char *key, char ***ret) {
+ _cleanup_strv_free_ char **a = NULL;
_cleanup_free_ char *s = NULL;
int r;
+ assert_return(ret, -EINVAL);
+
+ r = parse_env_file("/run/systemd/netif/state", NEWLINE, key, &s, NULL);
+ 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);
+ r = strv_length(a);
+
+ *ret = a;
+ a = NULL;
+
+ 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);
+}
+
+_public_ int sd_network_get_link_state(int ifindex, char **state) {
+ _cleanup_free_ char *s = NULL, *p = NULL;
+ int r;
+
+ assert_return(ifindex > 0, -EINVAL);
assert_return(state, -EINVAL);
- r = parse_env_file("/run/systemd/netif/state", NEWLINE, "OPER_STATE",
- &s, NULL);
+ if (asprintf(&p, "/run/systemd/netif/links/%d", ifindex) < 0)
+ return -ENOMEM;
+
+ r = parse_env_file(p, NEWLINE, "ADMIN_STATE", &s, NULL);
if (r == -ENOENT)
return -ENODATA;
- else if (r < 0)
+ if (r < 0)
return r;
- else if (!s)
- return -EIO;
+ if (isempty(s))
+ return -ENODATA;
+ if (streq(s, "initializing"))
+ return -EBUSY;
*state = s;
s = NULL;
@@ -95,10 +131,10 @@ _public_ int sd_network_get_link_operational_state(int ifindex, char **state) {
r = parse_env_file(p, NEWLINE, "OPER_STATE", &s, NULL);
if (r == -ENOENT)
return -ENODATA;
- else if (r < 0)
+ if (r < 0)
return r;
- else if (!s)
- return -EIO;
+ if (isempty(s))
+ return -ENODATA;
*state = s;
s = NULL;
@@ -119,9 +155,9 @@ _public_ int sd_network_get_link_llmnr(int ifindex, char **llmnr) {
r = parse_env_file(p, NEWLINE, "LLMNR", &s, NULL);
if (r == -ENOENT)
return -ENODATA;
- else if (r < 0)
+ if (r < 0)
return r;
- else if (!s)
+ if (isempty(s))
return -ENODATA;
*llmnr = s;
@@ -142,11 +178,12 @@ static int network_get_link_strv(const char *key, int ifindex, char ***ret) {
return -ENOMEM;
r = parse_env_file(p, NEWLINE, key, &s, NULL);
+ if (r == -ENOENT)
+ return -ENODATA;
if (r < 0)
return r;
- else if (!s) {
+ if (isempty(s)) {
*ret = NULL;
-
return 0;
}
diff --git a/src/network/networkctl.c b/src/network/networkctl.c
index 93b1293..d5d3c80 100644
--- a/src/network/networkctl.c
+++ b/src/network/networkctl.c
@@ -216,14 +216,20 @@ static int link_status(char **args, unsigned n) {
if (n <= 1) {
_cleanup_free_ char *operational_state = NULL;
+ _cleanup_strv_free_ char **dns = NULL, **ntp = NULL;
- r = sd_network_get_operational_state(&operational_state);
- if (r < 0) {
- log_error("Failed to get operational state: %s", strerror(-r));
- return r;
- }
+ sd_network_get_operational_state(&operational_state);
+ if (operational_state)
+ printf(" State: %s\n", operational_state);
+
+ sd_network_get_dns(&dns);
+ if (!strv_isempty(dns))
+ dump_list(" DNS: ", dns);
+
+ sd_network_get_dns(&ntp);
+ if (!strv_isempty(ntp))
+ dump_list(" NTP: ", ntp);
- printf("State: %s\n", operational_state);
return 0;
}
@@ -312,7 +318,7 @@ static int link_status(char **args, unsigned n) {
sd_network_get_link_operational_state(canonical_ifindex, &operational_state);
sd_network_get_link_dns(canonical_ifindex, &dns);
- sd_network_get_link_dns(canonical_ifindex, &ntp);
+ sd_network_get_link_ntp(canonical_ifindex, &ntp);
sprintf(devid, "n%i", canonical_ifindex);
d = udev_device_new_from_device_id(udev, devid);
diff --git a/src/systemd/sd-network.h b/src/systemd/sd-network.h
index 3e95072..44c4e97 100644
--- a/src/systemd/sd-network.h
+++ b/src/systemd/sd-network.h
@@ -56,6 +56,14 @@ _SD_BEGIN_DECLARATIONS;
*/
int sd_network_get_operational_state(char **state);
+/* Get DNS entries for all links. These are string representations of
+ * IP addresses */
+int sd_network_get_dns(char ***addr);
+
+/* Get NTP entries for all links. These are domain names or string
+ * reperesentations of IP addresses */
+int sd_network_get_ntp(char ***addr);
+
/* Get state from ifindex.
* Possible states: failed, configuring, configured, unmanaged
* Possible return codes:
@@ -71,12 +79,6 @@ int sd_network_get_link_state(int ifindex, char **state);
*/
int sd_network_get_link_operational_state(int ifindex, char **state);
-/* Indicates whether or not LLMNR should be enabled for the link
- * Possible levels of support: yes, no, resolve
- * Possible return codes:
- * -ENODATA: networkd is not aware of the link*/
-int sd_network_get_link_llmnr(int ifindex, char **llmnr);
-
/* Get DNS entries for a given link. These are string representations of
* IP addresses */
int sd_network_get_link_dns(int ifindex, char ***addr);
@@ -85,6 +87,12 @@ int sd_network_get_link_dns(int ifindex, char ***addr);
* reperesentations of IP addresses */
int sd_network_get_link_ntp(int ifindex, char ***addr);
+/* Indicates whether or not LLMNR should be enabled for the link
+ * Possible levels of support: yes, no, resolve
+ * Possible return codes:
+ * -ENODATA: networkd is not aware of the link*/
+int sd_network_get_link_llmnr(int ifindex, char **llmnr);
+
/* Monitor object */
typedef struct sd_network_monitor sd_network_monitor;
commit f01e5736f1555eec9183e48448fa3454f265b73e
Author: Lennart Poettering <lennart at poettering.net>
Date: Tue Aug 12 14:54:32 2014 +0200
timesyncd: move the generic sockaddr_equal() call to socket-util.h
diff --git a/src/shared/socket-util.c b/src/shared/socket-util.c
index 0a0726d..1a04f32 100644
--- a/src/shared/socket-util.c
+++ b/src/shared/socket-util.c
@@ -711,3 +711,19 @@ static const char* const socket_address_bind_ipv6_only_table[_SOCKET_ADDRESS_BIN
};
DEFINE_STRING_TABLE_LOOKUP(socket_address_bind_ipv6_only, SocketAddressBindIPv6Only);
+
+bool sockaddr_equal(const union sockaddr_union *a, const union sockaddr_union *b) {
+ assert(a);
+ assert(b);
+
+ if (a->sa.sa_family != b->sa.sa_family)
+ return false;
+
+ if (a->sa.sa_family == AF_INET)
+ return a->in.sin_addr.s_addr == b->in.sin_addr.s_addr;
+
+ if (a->sa.sa_family == AF_INET6)
+ return memcmp(&a->in6.sin6_addr, &b->in6.sin6_addr, sizeof(a->in6.sin6_addr)) == 0;
+
+ return false;
+}
diff --git a/src/shared/socket-util.h b/src/shared/socket-util.h
index 9883ab0..0b4998d 100644
--- a/src/shared/socket-util.h
+++ b/src/shared/socket-util.h
@@ -109,3 +109,5 @@ SocketAddressBindIPv6Only socket_address_bind_ipv6_only_from_string(const char *
int netlink_family_to_string_alloc(int b, char **s);
int netlink_family_from_string(const char *s) _pure_;
+
+bool sockaddr_equal(const union sockaddr_union *a, const union sockaddr_union *b);
diff --git a/src/timesync/timesyncd.c b/src/timesync/timesyncd.c
index e5a8a57..500f83f 100644
--- a/src/timesync/timesyncd.c
+++ b/src/timesync/timesyncd.c
@@ -536,22 +536,6 @@ static void manager_adjust_poll(Manager *m, double offset, bool spike) {
}
}
-static bool sockaddr_equal(union sockaddr_union *a, union sockaddr_union *b) {
- assert(a);
- assert(b);
-
- if (a->sa.sa_family != b->sa.sa_family)
- return false;
-
- if (a->sa.sa_family == AF_INET)
- return a->in.sin_addr.s_addr == b->in.sin_addr.s_addr;
-
- if (a->sa.sa_family == AF_INET6)
- return memcmp(&a->in6.sin6_addr, &b->in6.sin6_addr, sizeof(a->in6.sin6_addr)) == 0;
-
- return false;
-}
-
static int manager_receive_response(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
Manager *m = userdata;
struct ntp_msg ntpmsg;
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