Go to file
Peter Korsgaard cdac332d20 check-host-tar.sh: bump minimum tar version to 1.27 for reproducible tar files with long paths
Fixes:
http://autobuild.buildroot.net/results/b18/b187e64a61918f17f69588e2355a03286bc5808e

tar 1.27 subtly changed the tar format when a GNU long link entry is added
(which is done for path elements > 100 characters).  The code used to set
the permission mode of the link entry to 0:

  header = start_private_header ("././@LongLink", size, time (NULL));
  FILL (header->header.mtime, '0');
  FILL (header->header.mode, '0');
  FILL (header->header.uid, '0');
  FILL (header->header.gid, '0');
  FILL (header->header.devmajor, 0);
  FILL (header->header.devminor, 0);

This got dropped in 1.27 by commit df7b55a8f6354e3 (Fix some problems with
negative and out-of-range integers), so the settings from
start_private_header() are used directly - Which are:

  TIME_TO_CHARS (t < 0 ? 0 : min (t, MAX_OCTAL_VAL (header->header.mtime)),
		 header->header.mtime);
  MODE_TO_CHARS (S_IFREG|S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH, header->header.mode);
  UID_TO_CHARS (0, header->header.uid);
  GID_TO_CHARS (0, header->header.gid);

The end result is that tar >= 1.27 sets mode to 644.

The consequence of this is that we create different tar files when long path
names are encountered (which often happens when a package downloads a
specific sha1 from a git repo) depending on the host tar version used,
causing hash mismatches.

As a workaround, bump our minimum tar version to 1.27.  It would be nicer to
only do this if we have packages from bzr/git/hg enabled, but that is an
exercise for later.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2018-04-02 14:46:52 +02:00
arch */Config.in*: remove consecutive empty lines 2018-04-01 08:48:24 +02:00
board configs/qemu_ppc64_e5500: new defconfig 2018-04-02 00:42:59 +02:00
boot syslinux: use the host compiler to build extlinux 2018-04-01 17:49:05 +02:00
configs configs: switch to a wget download for kernels on github 2018-04-02 11:35:48 +02:00
docs docs/manual: add check-package to "Tips and tricks" 2018-04-02 00:42:59 +02:00
fs fs/*/Config.in: re-wrap help text 2018-04-01 08:52:45 +02:00
linux linux/Config.*: re-wrap help text 2018-04-01 08:53:57 +02:00
package download: put most of the infra in dl-wrapper 2018-04-02 14:19:51 +02:00
support check-host-tar.sh: bump minimum tar version to 1.27 for reproducible tar files with long paths 2018-04-02 14:46:52 +02:00
system system/Config.in: re-wrap help text 2018-04-01 08:01:05 +02:00
toolchain toolchain-wrapper: use -ffp-contract=off on MIPS Xburst for gcc >= 4.6 2018-04-01 16:23:33 +02:00
utils check-package: support symlinks to the script 2018-04-01 22:41:54 +02:00
.defconfig arch: remove support for sh64 2016-09-08 22:15:15 +02:00
.flake8 .flake8: ignore utils/diffconfig 2018-03-13 22:37:54 +01:00
.gitignore update gitignore 2013-05-04 12:41:55 +02:00
.gitlab-ci.yml configs/qemu_ppc64_e5500: new defconfig 2018-04-02 00:42:59 +02:00
.gitlab-ci.yml.in .gitlab-ci.yml: extend check-package test to Config.* files 2018-04-01 10:16:35 +02:00
CHANGES Update for 2018.02 2018-03-04 22:28:34 +01:00
Config.in Config.in*: re-wrap help text 2018-04-01 09:11:46 +02:00
Config.in.legacy package/kodi-adsp-*: remove packages 2018-04-01 16:20:11 +02:00
COPYING COPYING: add exception about patch licensing 2016-02-26 19:50:13 +01:00
DEVELOPERS configs/qemu_ppc64_e5500: new defconfig 2018-04-02 00:42:59 +02:00
Makefile package/pkg-generic: add <pkg>-show-recursive-(r)depends targets 2018-04-01 22:25:57 +02:00
Makefile.legacy Remove BR2_DEPRECATED 2016-10-15 23:14:45 +02:00
README README: add reference to submitting-patches 2016-02-01 19:16:08 +01:00

Buildroot is a simple, efficient and easy-to-use tool to generate embedded
Linux systems through cross-compilation.

The documentation can be found in docs/manual. You can generate a text
document with 'make manual-text' and read output/docs/manual/manual.text.
Online documentation can be found at http://buildroot.org/docs.html

To build and use the buildroot stuff, do the following:

1) run 'make menuconfig'
2) select the target architecture and the packages you wish to compile
3) run 'make'
4) wait while it compiles
5) find the kernel, bootloader, root filesystem, etc. in output/images

You do not need to be root to build or run buildroot.  Have fun!

Buildroot comes with a basic configuration for a number of boards. Run
'make list-defconfigs' to view the list of provided configurations.

Please feed suggestions, bug reports, insults, and bribes back to the
buildroot mailing list: buildroot@buildroot.org
You can also find us on #buildroot on Freenode IRC.

If you would like to contribute patches, please read
https://buildroot.org/manual.html#submitting-patches