[PATCH 1/1] server: Create temp files for anonymous mappings with memfd_create() if available.

[Paul Gofman]

From: Paul Gofman <[e-mail]>

---
 configure.ac     | 1 +
 server/mapping.c | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/configure.ac b/configure.ac
index 77b80ecb395..35f21a7b486 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2116,6 +2116,7 @@ AC_CHECK_FUNCS(\
 	getifaddrs \
 	getrandom \
 	kqueue \
+	memfd_create \
 	pipe2 \
 	port_create \
 	posix_fadvise \
diff --git a/server/mapping.c b/server/mapping.c
index 905d528b04f..d3fcc708022 100644
--- a/server/mapping.c
+++ b/server/mapping.c
@@ -365,6 +365,13 @@ static int create_temp_file( file_pos_t size )
     char tmpfn[16];
     int fd;
 
+#ifdef HAVE_MEMFD_CREATE
+    if ((fd = memfd_create( "wine-mapping", 0 )) != -1)
+    {
+        if (grow_file( fd, size )) return fd;
+        close( fd );
+    }
+#endif
     if (temp_dir_fd == -1)
     {
         temp_dir_fd = server_dir_fd;
-- 
GitLab

https://gitlab.winehq.org/wine/wine/-/merge_requests/10251