From 2b510d97ba9f66ef1e5b40778ed85b47e3b7cbe3 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@nbd.name>
Date: Mon, 19 Dec 2016 21:06:07 +0100
Subject: [PATCH] tar: fix reproducibility issue
Force root/root as names for uid0/gid0 instead of using the system
names. This helps make packed download tarballs more reproducible
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
.../patches/100-symlink-force-root-name.patch | 22 +++++++++++++++++++
1 file changed, 22 insertions(+)
create mode 100644 tools/tar/patches/100-symlink-force-root-name.patch
diff --git a/tools/tar/patches/100-symlink-force-root-name.patch b/tools/tar/patches/100-symlink-force-root-name.patch
new file mode 100644
index 0000000000..896b4723fc
--- /dev/null
+++ b/tools/tar/patches/100-symlink-force-root-name.patch
@@ -0,0 +1,22 @@
+Force root/root as names for uid0/gid0 instead of using the system
+names. This helps make packed download tarballs more reproducible
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+--- a/src/create.c
++++ b/src/create.c
+@@ -545,12 +545,8 @@ write_gnu_long_link (struct tar_stat_inf
+ char *tmpname;
+
+ header = start_private_header ("././@LongLink", size, 0);
+- uid_to_uname (0, &tmpname);
+- UNAME_TO_CHARS (tmpname, header->header.uname);
+- free (tmpname);
+- gid_to_gname (0, &tmpname);
+- GNAME_TO_CHARS (tmpname, header->header.gname);
+- free (tmpname);
++ UNAME_TO_CHARS ("root", header->header.uname);
++ GNAME_TO_CHARS ("root", header->header.gname);
+
+ strcpy (header->buffer + offsetof (struct posix_header, magic),
+ OLDGNU_MAGIC);
--
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