From 18796375054498bba8a85def2f42876586fc4b8f Mon Sep 17 00:00:00 2001
From: Andrew Cooper <andrew.cooper3@citrix.com>
Date: Fri, 5 Dec 2025 21:33:25 +0000
Subject: [PATCH] tools/sd-notify.h: Include string.h too
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Alpine Linux, when using --enable-systemd to get the init files, fails with:

  tools/include/xen-sd-notify.h:69:3: error: call to undeclared library
  function 'memcpy' with type 'void *(void *, const void *, unsigned long)';
  ISO C99 and later do not support implicit function declarations
  [-Wimplicit-function-declaration]
     69 |   memcpy(socket_addr.sun.sun_path, socket_path, path_length);
        |   ^

This will be down to using musl rather than glibc.  Include the appropriate
header.

Fixes: 78510f3a1522 ("tools: Import stand-alone sd_notify() implementation from systemd")
Reported-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Acked-by: Anthony PERARD <anthony.perard@vates.tech>
(cherry picked from commit 8efff5a69ab7596f6c63031d0aef292114948cd9)
---
 tools/include/xen-sd-notify.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/include/xen-sd-notify.h b/tools/include/xen-sd-notify.h
index 28c9b20f15..20441d0ec9 100644
--- a/tools/include/xen-sd-notify.h
+++ b/tools/include/xen-sd-notify.h
@@ -20,6 +20,7 @@
 #include <errno.h>
 #include <stddef.h>
 #include <stdlib.h>
+#include <string.h>
 #include <sys/socket.h>
 #include <sys/un.h>
 #include <unistd.h>