From: Tim Kientzle <kientzle@gmail.com>
Date: Thu, 26 Jun 2008 08:51:21 +0000 (-0400)
Subject: When hardlinking files for -l by using archive_write_header(),
X-Git-Tag: v2.6.0~149
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3bda5744a404eccf4c57d00227d717cc996bd4f9;p=thirdparty%2Flibarchive.git

When hardlinking files for -l by using archive_write_header(),
ensure that we're just doing a bare hardlink without any accompanying
data.  (Remember that cpio allows hardlinks to have data.)
Otherwise, -l creates a link and then opens the linked files
for overwrite, resulting in the files being erased.

SVN-Revision: 143
---

diff --git a/cpio/cpio.c b/cpio/cpio.c
index 7b3006238..a92cd3e86 100644
--- a/cpio/cpio.c
+++ b/cpio/cpio.c
@@ -546,6 +546,7 @@ entry_to_archive(struct cpio *cpio, struct archive_entry *entry)
 		/* Note: link(2) doesn't create parent directories,
 		 * so we use archive_write_header() instead. */
 		archive_entry_set_hardlink(t, srcpath);
+		archive_entry_set_size(t, 0);
 		r = archive_write_header(cpio->archive, t);
 		archive_entry_free(t);
 		if (r != ARCHIVE_OK)