diff --git a/src/util/os_memory_fd.c b/src/util/os_memory_fd.c
index 86c80c9e8a1..eaf31bd45c4 100644
--- a/src/util/os_memory_fd.c
+++ b/src/util/os_memory_fd.c
@@ -66,6 +66,23 @@ get_driver_id_sha1_hash(uint8_t sha1[SHA1_DIGEST_LENGTH], const char *driver_id)
    _mesa_sha1_final(&sha1_ctx, sha1);
 }
 
+static bool
+get_fd_header(int fd, struct memory_header *header, char const *driver_id)
+{
+   lseek(fd, 0, SEEK_SET);
+   const int bytes_read = read(fd, header, sizeof(*header));
+   if (bytes_read != sizeof(*header))
+      return false;
+
+   // Check the uuid we put after the sizes in order to verify that the fd
+   // is a memfd that we created and not some random fd.
+   uint8_t sha1[SHA1_DIGEST_LENGTH];
+   get_driver_id_sha1_hash(sha1, driver_id);
+
+   assert(SHA1_DIGEST_LENGTH >= UUID_SIZE);
+   return memcmp(header->uuid, sha1, UUID_SIZE) == 0;
+}
+
 /**
  * Imports memory from a file descriptor
  */
@@ -75,21 +92,9 @@ os_import_memory_fd(int fd, void **ptr, uint64_t *size, char const *driver_id)
    void *mapped_ptr;
    struct memory_header header;
 
-   lseek(fd, 0, SEEK_SET);
-   int bytes_read = read(fd, &header, sizeof(header));
-   if(bytes_read != sizeof(header))
+   if (!get_fd_header(fd, &header, driver_id))
       return false;
 
-   // Check the uuid we put after the sizes in order to verify that the fd
-   // is a memfd that we created and not some random fd.
-   uint8_t sha1[SHA1_DIGEST_LENGTH];
-   get_driver_id_sha1_hash(sha1, driver_id);
-
-   assert(SHA1_DIGEST_LENGTH >= UUID_SIZE);
-   if (memcmp(header.uuid, sha1, UUID_SIZE)) {
-      return false;
-   }
-
    mapped_ptr = mmap(NULL, header.size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
    if (mapped_ptr == MAP_FAILED) {
       return false;