tree-wide: cleanup headers (#39559)

This also adds missing license header.

Follow-up for ee2108dcd5f62593a3081b57cc92b3535d8096fa.

src/analyze/analyze-compare-versions.h

@@ -1,3 +1,4 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 int verb_compare_versions(int argc, char *argv[], void *userdata);

src/analyze/analyze-fdstore.h

@@ -1,3 +1,4 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 int verb_fdstore(int argc, char *argv[], void *userdata);

src/analyze/analyze-image-policy.h

@@ -1,3 +1,4 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 int verb_image_policy(int argc, char *argv[], void *userdata);

src/boot/export-vars.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 #include "proto/loaded-image.h"
 

src/bootctl/bootctl-reboot-to-firmware.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 #include "shared-forward.h"
 

src/bootctl/bootctl-status.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 #include "shared-forward.h"
 

src/bootctl/bootctl-uki.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 #include "shared-forward.h"
 

src/core/bpf/restrict-fs/restrict-fs-skel.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 /* The SPDX header above is actually correct in claiming this was
  * LGPL-2.1-or-later, because it is. Since the kernel doesn't consider that

src/core/bpf/restrict-ifaces/restrict-ifaces-skel.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 /* The SPDX header above is actually correct in claiming this was
  * LGPL-2.1-or-later, because it is. Since the kernel doesn't consider that

src/core/bpf/socket-bind/socket-bind-api.bpf.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 /* The SPDX header above is actually correct in claiming this was
  * LGPL-2.1-or-later, because it is. Since the kernel doesn't consider that

src/core/bpf/socket-bind/socket-bind-skel.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 /* The SPDX header above is actually correct in claiming this was
  * LGPL-2.1-or-later, because it is. Since the kernel doesn't consider that

src/fundamental/confidential-virt-fundamental.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 #include <stdint.h>
 

src/fundamental/sbat.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 #ifdef SBAT_DISTRO
 #  include "version.h"

src/libsystemd-network/ndisc-option.h

@@ -5,6 +5,7 @@
 #include <netinet/ip6.h>
 
 #include "sd-dns-resolver.h"
+#include "sd-forward.h"
 
 #include "time-util.h"
 

src/libsystemd/sd-bus/test-vtable-data.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 #include <stdbool.h>
 

src/network/bpf/sysctl-monitor/sysctl-monitor-skel.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 /* The SPDX header above is actually correct in claiming this was
  * LGPL-2.1-or-later, because it is. Since the kernel doesn't consider that

src/network/networkctl-link-info.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 #include <linux/if.h>
 #include <linux/if_link.h>

src/nspawn/nspawn-bind-user.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 #include "shared-forward.h"
 

src/nsresourced/bpf/userns-restrict/userns-restrict-skel.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 /* The SPDX header above is actually correct in claiming this was
  * LGPL-2.1-or-later, because it is. Since the kernel doesn't consider that

src/shared/kernel-config.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 #include "shared-forward.h"
 

src/systemd/meson.build

@@ -35,6 +35,7 @@ _not_installed_headers = [
         'sd-dhcp6-lease.h',
         'sd-dhcp6-option.h',
         'sd-dhcp6-protocol.h',
+        'sd-dns-resolver.h',
         'sd-ipv4acd.h',
         'sd-ipv4ll.h',
         'sd-lldp-rx.h',

src/systemd/sd-dns-resolver.h

@@ -1,16 +1,33 @@
-#ifndef SD_DNS_RESOLVER_H
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
-#define SD_DNS_RESOLVER_H
+#ifndef foosddnsresolverhfoo
+#define foosddnsresolverhfoo
+
+/***
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <https://www.gnu.org/licenses/>.
+***/
 
 #include "_sd-common.h"
 
-#include "sd-forward.h"
-
 _SD_BEGIN_DECLARATIONS;
 
+struct in_addr;
+struct in6_addr;
+
 typedef struct sd_dns_resolver sd_dns_resolver;
 
 /* https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml#alpn-protocol-ids */
-typedef enum sd_dns_alpn_flags {
+__extension__ typedef enum sd_dns_alpn_flags {
         /* There isn't really an alpn reserved for Do53 service, but designated resolvers may or may not offer
          * Do53 service, so we should probably have a flag to represent this capability. Unfortunately DNR
          * does not indicate the status to us. */
@@ -38,4 +55,4 @@ _SD_DEFINE_POINTER_CLEANUP_FUNC(sd_dns_resolver, sd_dns_resolver_unref);
 
 _SD_END_DECLARATIONS;
 
-#endif /* SD_DNS_RESOLVER_H */
+#endif

src/systemd/sd-utf8.h

@@ -1,29 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-#ifndef foosdutf8hfoo
-#define foosdutf8hfoo
-
-/***
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <https://www.gnu.org/licenses/>.
-***/
-
-#include "_sd-common.h"
-
-_SD_BEGIN_DECLARATIONS;
-
-_sd_pure_ const char *sd_utf8_is_valid(const char *s);
-_sd_pure_ const char *sd_ascii_is_valid(const char *s);
-
-_SD_END_DECLARATIONS;
-
-#endif

src/sysupdate/sysupdate-feature.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 #include "sysupdate-forward.h"
 

src/vmspawn/vmspawn-register.h

@@ -1,4 +1,5 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
 
 #include "shared-forward.h"