unlink a previous file before its extracted

git-svn-id: svn://busybox.net/trunk/busybox@6805 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 2 insertions, 1 deletions

diff --git a/archival/libunarchive/data_extract_all.c b/archival/libunarchive/data_extract_all.c
index 77b4de593..bd264dd74 100644
--- a/archival/libunarchive/data_extract_all.c
+++ b/archival/libunarchive/data_extract_all.c
@@ -53,7 +53,8 @@ extern void data_extract_all(archive_handle_t *archive_handle)
 #endif
                         {
                                 /* Regular file */
-                                dst_fd = bb_xopen(file_header->name, O_WRONLY | O_CREAT);
+                                unlink(file_header->name);
+                                dst_fd = bb_xopen(file_header->name, O_WRONLY | O_CREAT | O_EXCL);
                                 archive_copy_file(archive_handle, dst_fd);
                                 close(dst_fd);
                         }