From 0c73119d5c99a0e705f834b64fa9d9a47b767597 Mon Sep 17 00:00:00 2001
From: Will Korteland <will.korteland@mongodb.com>
Date: Thu, 29 Sep 2022 02:55:37 +0000
Subject: Import wiredtiger: 7e38deff7bff0f2cdad1b8760b123bcf0a476456 from
 branch mongodb-master

ref: 0081d825de..7e38deff7b
for: 6.2.0-rc0

WT-8526 test/format should copy all the files it needs to start up into the backup directories (#8297)
---
 src/third_party/wiredtiger/import.data             |  2 +-
 src/third_party/wiredtiger/test/format/backup.c    | 36 ++++++++++++++++++++++
 src/third_party/wiredtiger/test/utility/misc.c     | 14 +++++++++
 .../wiredtiger/test/utility/test_util.h            |  1 +
 4 files changed, 52 insertions(+), 1 deletion(-)

diff --git a/src/third_party/wiredtiger/import.data b/src/third_party/wiredtiger/import.data
index 65c95ab42ad..4d1d4ed28e9 100644
--- a/src/third_party/wiredtiger/import.data
+++ b/src/third_party/wiredtiger/import.data
@@ -2,5 +2,5 @@
     "vendor": "wiredtiger",
     "github": "wiredtiger/wiredtiger.git",
     "branch": "mongodb-master",
-    "commit": "0081d825de8c1db90046a87584a63c33cdf05875"
+    "commit": "7e38deff7bff0f2cdad1b8760b123bcf0a476456"
 }
diff --git a/src/third_party/wiredtiger/test/format/backup.c b/src/third_party/wiredtiger/test/format/backup.c
index 722bfdedc3f..f463b20d5a4 100644
--- a/src/third_party/wiredtiger/test/format/backup.c
+++ b/src/third_party/wiredtiger/test/format/backup.c
@@ -457,6 +457,36 @@ save_backup_info(ACTIVE_FILES *active, uint64_t id)
     free(to_path);
 }
 
+/*
+ * copy_format_files --
+ *     Copies over format-specific files to the BACKUP.copy directory. These include CONFIG and any
+ *     CONFIG.keylen* files.
+ */
+static void
+copy_format_files(WT_SESSION *session)
+{
+    size_t file_len;
+    u_int i;
+    char *filename;
+
+    /* The CONFIG file should always exist, copy it over. */
+    testutil_copy_file(session, "CONFIG");
+
+    /* Copy over any CONFIG.keylen* files if they exist. */
+    if (ntables == 0)
+        testutil_copy_if_exists(session, "CONFIG.keylen");
+    else {
+        file_len = strlen("CONFIG.keylen.") + 10;
+        filename = dmalloc(file_len);
+
+        for (i = 1; i <= ntables; ++i) {
+            testutil_check(__wt_snprintf(filename, file_len, "CONFIG.keylen.%u", i));
+            testutil_copy_if_exists(session, filename);
+        }
+        free(filename);
+    }
+}
+
 /*
  * backup --
  *     Periodically do a backup and verify it.
@@ -580,6 +610,12 @@ backup(void *arg)
         /* If we're taking a full backup, create the backup directories. */
         if (full || incremental == 0) {
             testutil_create_backup_directory(g.home);
+
+            /*
+             * Copy format-specific files into the backup directories so that test/format can be run
+             * on the BACKUP.copy database for verification.
+             */
+            copy_format_files(session);
         }
 
         /*
diff --git a/src/third_party/wiredtiger/test/utility/misc.c b/src/third_party/wiredtiger/test/utility/misc.c
index ac7f2252540..d9702d94e89 100644
--- a/src/third_party/wiredtiger/test/utility/misc.c
+++ b/src/third_party/wiredtiger/test/utility/misc.c
@@ -312,6 +312,20 @@ testutil_copy_file(WT_SESSION *session, const char *name)
     free(second);
 }
 
+/*
+ * testutil_copy_if_exists --
+ *     Copy a file into a directory if it exists.
+ */
+void
+testutil_copy_if_exists(WT_SESSION *session, const char *name)
+{
+    bool exist;
+
+    testutil_check(__wt_fs_exist((WT_SESSION_IMPL *)session, name, &exist));
+    if (exist)
+        testutil_copy_file(session, name);
+}
+
 /*
  * testutil_is_flag_set --
  *     Return if an environment variable flag is set.
diff --git a/src/third_party/wiredtiger/test/utility/test_util.h b/src/third_party/wiredtiger/test/utility/test_util.h
index 7b255d233d0..40fc123fbe3 100644
--- a/src/third_party/wiredtiger/test/utility/test_util.h
+++ b/src/third_party/wiredtiger/test/utility/test_util.h
@@ -366,6 +366,7 @@ void testutil_clean_work_dir(const char *);
 void testutil_cleanup(TEST_OPTS *);
 void testutil_copy_data(const char *);
 void testutil_copy_file(WT_SESSION *, const char *);
+void testutil_copy_if_exists(WT_SESSION *, const char *);
 void testutil_create_backup_directory(const char *);
 void testutil_make_work_dir(const char *);
 void testutil_modify_apply(WT_ITEM *, WT_ITEM *, WT_MODIFY *, int, uint8_t);
-- 
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