network: dhcp6: do not request address if UseAddress=no

Fixes #22068.

src/basic/log.c

@@ -1189,14 +1189,9 @@ static bool should_parse_proc_cmdline(void) {
         return getpid_cached() == p;
 }
 
-void log_parse_environment(void) {
+void log_parse_environment_variables(void) {
         const char *e;
 
-        /* Do not call from library code. */
-
-        if (should_parse_proc_cmdline())
-                (void) proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX);
-
         e = getenv("SYSTEMD_LOG_TARGET");
         if (e && log_set_target_from_string(e) < 0)
                 log_warning("Failed to parse log target '%s'. Ignoring.", e);
@@ -1222,6 +1217,15 @@ void log_parse_environment(void) {
                 log_warning("Failed to parse log tid '%s'. Ignoring.", e);
 }
 
+void log_parse_environment(void) {
+        /* Do not call from library code. */
+
+        if (should_parse_proc_cmdline())
+                (void) proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX);
+
+        log_parse_environment_variables();
+}
+
 LogTarget log_get_target(void) {
         return log_target;
 }

src/basic/log.h

@@ -82,6 +82,7 @@ int log_open(void);
 void log_close(void);
 void log_forget_fds(void);
 
+void log_parse_environment_variables(void);
 void log_parse_environment(void);
 
 int log_dispatch_internal(

src/boot/bootctl.c

@@ -1382,6 +1382,39 @@ static void print_yes_no_line(bool first, bool good, const char *name) {
                name);
 }
 
+static int are_we_installed(void) {
+        int r;
+
+        r = acquire_esp(/* privileged_mode= */ false, /* graceful= */ false, NULL, NULL, NULL, NULL);
+        if (r < 0)
+                return r;
+
+        /* Tests whether systemd-boot is installed. It's not obvious what to use as check here: we could
+         * check EFI variables, we could check what binary /EFI/BOOT/BOOT*.EFI points to, or whether the
+         * loader entries directory exists. Here we opted to check whether /EFI/systemd/ is non-empty, which
+         * should be a suitable and very minimal check for a number of reasons:
+         *
+         *  → The check is architecture independent (i.e. we check if any systemd-boot loader is installed,
+         *    not a specific one.)
+         *
+         *  → It doesn't assume we are the only boot loader (i.e doesn't check if we own the main
+         *    /EFI/BOOT/BOOT*.EFI fallback binary.
+         *
+         *  → It specifically checks for systemd-boot, not for other boot loaders (which a check for
+         *    /boot/loader/entries would do). */
+
+        _cleanup_free_ char *p = path_join(arg_esp_path, "/EFI/systemd/");
+        if (!p)
+                return log_oom();
+
+        log_debug("Checking whether %s contains any files…", p);
+        r = dir_is_empty(p);
+        if (r < 0 && r != -ENOENT)
+                return log_error_errno(r, "Failed to check whether %s contains any files: %m", p);
+
+        return r == 0;
+}
+
 static int verb_status(int argc, char *argv[], void *userdata) {
         sd_id128_t esp_uuid = SD_ID128_NULL, xbootldr_uuid = SD_ID128_NULL;
         int r, k;
@@ -1758,6 +1791,17 @@ static int verb_install(int argc, char *argv[], void *userdata) {
         if (r < 0)
                 return r;
 
+        if (!install) {
+                /* If we are updating, don't do anything if sd-boot wasn't actually installed. */
+                r = are_we_installed();
+                if (r < 0)
+                        return r;
+                if (r == 0) {
+                        log_debug("Skipping update because sd-boot is not installed in the ESP.");
+                        return 0;
+                }
+        }
+
         r = acquire_xbootldr(/* unprivileged_mode= */ false, NULL);
         if (r < 0)
                 return r;
@@ -1880,41 +1924,19 @@ static int verb_remove(int argc, char *argv[], void *userdata) {
 }
 
 static int verb_is_installed(int argc, char *argv[], void *userdata) {
-        _cleanup_free_ char *p = NULL;
         int r;
 
-        r = acquire_esp(/* privileged_mode= */ false, /* graceful= */ false, NULL, NULL, NULL, NULL);
+        r = are_we_installed();
         if (r < 0)
                 return r;
 
-        /* Tests whether systemd-boot is installed. It's not obvious what to use as check here: we could
-         * check EFI variables, we could check what binary /EFI/BOOT/BOOT*.EFI points to, or whether the
-         * loader entries directory exists. Here we opted to check whether /EFI/systemd/ is non-empty, which
-         * should be a suitable and very minimal check for a number of reasons:
-         *
-         *  → The check is architecture independent (i.e. we check if any systemd-boot loader is installed, not a
-         *    specific one.)
-         *
-         *  → It doesn't assume we are the only boot loader (i.e doesn't check if we own the main
-         *    /EFI/BOOT/BOOT*.EFI fallback binary.
-         *
-         *  → It specifically checks for systemd-boot, not for other boot loaders (which a check for
-         *    /boot/loader/entries would do). */
-
-        p = path_join(arg_esp_path, "/EFI/systemd/");
-        if (!p)
-                return log_oom();
-
-        r = dir_is_empty(p);
-        if (r > 0 || r == -ENOENT) {
+        if (r > 0) {
+                puts("yes");
+                return EXIT_SUCCESS;
+        } else {
                 puts("no");
                 return EXIT_FAILURE;
         }
-        if (r < 0)
-                return log_error_errno(r, "Failed to detect whether systemd-boot is installed: %m");
-
-        puts("yes");
-        return EXIT_SUCCESS;
 }
 
 static int parse_timeout(const char *arg1, char16_t **ret_timeout, size_t *ret_timeout_size) {

src/network/networkd-dhcp6.c

@@ -646,9 +646,15 @@ static int dhcp6_configure(Link *link) {
 
         r = sd_dhcp6_client_set_prefix_delegation(client, link->network->dhcp6_use_pd_prefix);
         if (r < 0)
-                return log_link_debug_errno(link, r, "DHCPv6 CLIENT: Failed to %s prefix delegation: %m",
+                return log_link_debug_errno(link, r, "DHCPv6 CLIENT: Failed to %s requesting prefixes to be delegated: %m",
                                             enable_disable(link->network->dhcp6_use_pd_prefix));
 
+        /* Even if UseAddress=no, we need to request IA_NA, as the dhcp6 client may be started in managed mode. */
+        r = sd_dhcp6_client_set_address_request(client, link->network->dhcp6_use_pd_prefix ? link->network->dhcp6_use_address : true);
+        if (r < 0)
+                return log_link_debug_errno(link, r, "DHCPv6 CLIENT: Failed to %s requesting address: %m",
+                                            enable_disable(link->network->dhcp6_use_address));
+
         if (link->network->dhcp6_pd_prefix_length > 0) {
                 r = sd_dhcp6_client_set_prefix_delegation_hint(client,
                                                                link->network->dhcp6_pd_prefix_length,

src/nss-mymachines/nss-mymachines.c

@@ -22,14 +22,9 @@
 #include "signal-util.h"
 #include "string-util.h"
 
-static void setup_logging(void) {
-        /* We need a dummy function because log_parse_environment is a macro. */
-        log_parse_environment();
-}
-
 static void setup_logging_once(void) {
         static pthread_once_t once = PTHREAD_ONCE_INIT;
-        assert_se(pthread_once(&once, setup_logging) == 0);
+        assert_se(pthread_once(&once, log_parse_environment_variables) == 0);
 }
 
 #define NSS_ENTRYPOINT_BEGIN                    \

src/nss-resolve/nss-resolve.c

@@ -22,7 +22,7 @@
 static JsonDispatchFlags json_dispatch_flags = 0;
 
 static void setup_logging(void) {
-        log_parse_environment();
+        log_parse_environment_variables();
 
         if (DEBUG_LOGGING)
                 json_dispatch_flags = JSON_LOG;

src/nss-systemd/nss-systemd.c

@@ -116,14 +116,9 @@ static GetentData getsgent_data = {
         .mutex = PTHREAD_MUTEX_INITIALIZER,
 };
 
-static void setup_logging(void) {
-        /* We need a dummy function because log_parse_environment is a macro. */
-        log_parse_environment();
-}
-
 static void setup_logging_once(void) {
         static pthread_once_t once = PTHREAD_ONCE_INIT;
-        assert_se(pthread_once(&once, setup_logging) == 0);
+        assert_se(pthread_once(&once, log_parse_environment_variables) == 0);
 }
 
 #define NSS_ENTRYPOINT_BEGIN                    \