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Go Back   Linux Archive > ArchLinux > ArchLinux Pacman Development

 
 
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Old 11-16-2009, 01:22 AM
 
Default The official pacman repository branch, master, updated. v3.3.3-97-g8a8dfc9

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via be266b43647ef57632d7bcfd07a4441f737b5aed (commit)
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- Log -----------------------------------------------------------------
commit 8a8dfc9d55c6045d59bed6cde4ae6e2307b335ea
Author: Dan McGee <dan@archlinux.org>
Date: Sun Nov 15 20:21:50 2009 -0600

HACKING: add some notes about valgrind/gdb usage

Signed-off-by: Dan McGee <dan@archlinux.org>

commit d2dbb04a9af7a18da217fb21b9152626c43461da
Author: Dan McGee <dan@archlinux.org>
Date: Wed Nov 11 23:39:26 2009 -0600

download: major refactor to address lingering issues

Sorry for this being such a huge patch, but I believe it is necessary for
quite a few reasons which I will attempt to explain herein. I've been
mulling this over for a while, but wasn't super happy with making the
download interface more complex. Instead, if we carefully order things in
the internal download code, we can actually make the interface simpler.

1. FS#15657 - This involves `name.db.tar.gz.part` files being left around the
filesystem, and then causing all sorts of issues when someone attempts to
rerun the operation they canceled. We need to ensure that if we resume a
download, we are resuming it on exactly the same file; if we cannot be
almost postive of that then we need to start over.

2. http://www.mail-archive.com/pacman-dev@archlinux.org/msg03536.html - Here
we have a lighttpd bug to ruin the day. If we send both a Range: header and
If-Modified-Since: header across the wire in a GET request, lighttpd doesn't
do what we want in several cases. If the file hadn't been modified, it
returns a '304 Not Modified' instead of a '206 Partial Content'. We need to
do a stat (e.g. HEAD in HTTP terms) operation here, and the proceed
accordingly based off the values we get back from it.

3. The mtime stuff was rather ugly, and relied on the called function to
write back to a passed in reference, which isn't the greatest. Instead, use
the power of the filesystem to contain this info. Every file downloaded
internally is now carefully timestamped with the remote file time. This
should allow the resume logic to work. In order to guarantee this, we need
to implement a signal handler that catches interrupts, notifies the running
code, and causes it to set the mtimes on the file. It then rethrows the
signal so the pacman signal handler (or any frontend) works as expected.

4. We did a lot of funky stuff in trying to track the DB last modified time.
It is a lot easier to just keep the downloaded DB file around and track the
time on that rather than in a funky dot file. It also kills a lot of code.

5. For GPG verification of the databases down the road, we are going to need
the DB file around for at least a short bit of time anyway, so this gets us
closer to that.

Signed-off-by: Dan McGee <dan@archlinux.org>
[Xav: fixed printf with off_t]
Signed-off-by: Xavier Chantry <shiningxc@gmail.com>

commit be266b43647ef57632d7bcfd07a4441f737b5aed
Author: Laszlo Papp <djszapi2@gmail.com>
Date: Fri Nov 13 00:59:34 2009 +0100

Refactor do/while cycle and multiple while cycles

* It makes the code clearer to read/understand
* Cppcheck tool doesn't show this anymore: [./util.c:215]: (error) Resource leak: fd

[Dan: don't change the coding style]
Signed-off-by: Dan McGee <dan@archlinux.org>

-----------------------------------------------------------------------

Summary of changes:
HACKING | 13 ++++
lib/libalpm/alpm.h | 8 +--
lib/libalpm/be_files.c | 96 ++-------------------------
lib/libalpm/dload.c | 177 +++++++++++++++++++++++++++++++++---------------
lib/libalpm/dload.h | 4 +-
lib/libalpm/trans.c | 5 +-
lib/libalpm/util.c | 11 ++-
src/pacman/pacman.c | 15 ++++-
8 files changed, 168 insertions(+), 161 deletions(-)


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