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authorGreg Kurz <groug@kaod.org>2025-03-12 16:29:32 +0100
committerChristian Schoenebeck <qemu_oss@crudebyte.com>2025-05-05 11:28:29 +0200
commit610dc187e52605c8ea8d14c5e7d8e7384f8af290 (patch)
tree49bb69cc55e1517002d2aa86df80b7d694f4314c
parent4719a2d59176a6c850e2b4f1af44cecd25430fce (diff)
downloadfocaccia-qemu-610dc187e52605c8ea8d14c5e7d8e7384f8af290.tar.gz
focaccia-qemu-610dc187e52605c8ea8d14c5e7d8e7384f8af290.zip
tests/9p: Test `Tsetattr` can truncate unlinked file
Enhance the `use-after-unlink` test with a new check for the
case where the client wants to alter the size of an unlinked
file for which it still has an active fid.

Suggested-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <20250312152933.383967-7-groug@kaod.org>
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
-rw-r--r--tests/qtest/virtio-9p-test.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/tests/qtest/virtio-9p-test.c b/tests/qtest/virtio-9p-test.c
index f515a9bb15..ac38ccf595 100644
--- a/tests/qtest/virtio-9p-test.c
+++ b/tests/qtest/virtio-9p-test.c
@@ -736,6 +736,20 @@ static void fs_use_after_unlink(void *obj, void *data,
         .data = buf
     }).count;
     g_assert_cmpint(count, ==, write_count);
+
+    /* truncate file to (arbitrarily chosen) size 2001 */
+    tsetattr({
+        .client = v9p, .fid = fid_file, .attr = (v9fs_attr) {
+            .valid = P9_SETATTR_SIZE,
+            .size = 2001
+        }
+     });
+    /* truncate apparently succeeded, let's double-check the size */
+    tgetattr({
+        .client = v9p, .fid = fid_file, .request_mask = P9_GETATTR_BASIC,
+        .rgetattr.attr = &attr
+    });
+    g_assert_cmpint(attr.size, ==, 2001);
 }
 
 static void cleanup_9p_local_driver(void *data)