* jc/upload-corrupt:
  daemon: send stderr to /dev/null instead of closing.
  upload-pack/fetch-pack: support side-band communication
  Retire git-clone-pack
  upload-pack: prepare for sideband message support.
  upload-pack: avoid sending an incomplete pack upon failure

* jc/waitpid:
  Restore SIGCHLD to SIG_DFL where we care about waitpid().

* ff/c99:
  Remove all void-pointer arithmetic.
  Change types used in bitfields to be `int's.
  Don't use empty structure initializers.
  Cast pointers to `void *' when used in a format.
  Don't instantiate structures with FAMs.
  Initialize FAMs using `FLEX_ARRAY'.
  Remove ranges from switch statements.

* pb/config:
  git_config: access() returns 0 on success, not > 0
  repo-config: Fix late-night bug
  Read configuration also from $HOME/.gitconfig
  Fix setting config variables with an alternative GIT_CONFIG
  Support for extracting configuration from different files

* lt/objlist:
  Add "named object array" concept

Trying to open an interactive editor in the console while stdout is
being piped to the parent process doesn't work out very well.
Signed-off-by: NEric Wong <normalperson@yhbt.net>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Signed-off-by: NJunio C Hamano <junkio@cox.net>

When multiple recipients are given to git-send-email on the same
--cc line the code does not properly handle it.

Full and proper parsing of the email addresses so I can detect
which commas mean a new email address is more than I care to implement.

In particular this email address: "bibo,mao" <bibo.mao@intel.com>
must not be treated as two email addresses.

So this patch simply treats all commas in recipient lists as
an error and fails if one is given.

At the same time it documents that git-send-email wants multiple
instances of --cc specified on the command line if you want to
cc multiple recipients.
Signed-off-by: NEric W. Biederman <ebiederm@xmission.com>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Before this patch, -DDEFAULT_GIT_TEMPLATE_DIR was passed on compilation
command line to all and every .c file compiled. In fact the macro
is used by only one .c file, and unused by all other .c files.
Remove -DDEFAULT_GIT_TEMPLATE_DIR where unused. Follow the example of
exec_cmd.o. Pass -DDEFAULT_GIT_TEMPLATE_DIR only where actually used.
Signed-off-by: NYakov Lerner <iler.ml@gmail.com>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Signed-off-by: NJunio C Hamano <junkio@cox.net>

Earlier commit 3e4339e6 had a
thinko that did not check for collisions while repopulating the
objects in the new hash table.
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Currently, we don't check refs_hash_size size and happily call
lookup_object_refs() even if refs_hash_size is zero which leads to
a division by zero in hash_obj().
Signed-off-by: NAndre Noll <maan@systemlinux.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This implements a protocol extension between fetch-pack and
upload-pack to allow stderr stream from upload-pack (primarily
used for the progress bar display) to be passed back.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

The program is not used by git-clone since git-fetch-pack was extended
to allow its caller do what git-clone-pack alone did, and git-clone was
updated to use it.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This does not implement sideband for propagating the status to
the downloader yet, but add code to capture the standard error
output from the pack-objects process in preparation for sending
it off to the client when the protocol extension allows us to do
so.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

When the repository on the remote side is corrupted, rev-list
spawned from upload-pack would die with error, but pack-objects
that reads from the rev-list happily created a packfile that can
be unpacked by the downloader.  When this happens, the resulting
packfile is not corrupted and unpacks cleanly, but the list of
the objects contained in it is not what the protocol exchange
computed.

This update makes upload-pack to monitor its subprocesses, and
when either of them dies with error, sends an incomplete pack
data to the downloader to cause it to fail.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

If match is "", match[-1] is accessed.  Let pathspec_matches return 1 in that
case indicating that "" matches everything.

Incidently this fixes git-grep'ing in ".".
Signed-off-by: NUwe Zeisberger <Uwe_Zeisberger@digi.com>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Earlier we did not consider untracked working tree files
"precious", but we have always considered them fair game to
clobber.  These days, branch switching by read-tree is more
careful and tries to protect untracked working tree files.  This
caused the following workflow to stop working:

	git checkout one-branch-with-file-F
	git checkout -f another-without-file-F
	git pull . one-branch-with-file-F

Because the second checkout leaves F from the previous state as
untracked file in the working tree, the merge would fail, trying
to protect F from being clobbered.

This changes "git checkout -f" to remove working tree files that
are known to git in the switched-from state but do not exist in
the switched-to state, borrowing the same logic from "reset --hard".
Signed-off-by: NJunio C Hamano <junkio@cox.net>

When we run git-daemon from inetd, even with the --verbose option, it
doesn't log the peer address. That logic was only in the standalone
daemon code -- move it to the execute() function instead. Tested with
both IPv6 and Legacy IP clients, in both inetd and daemon mode.
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>
Acked-by: NJon Loeliger <jdl@jdl.com>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

ANSI C99 doesn't allow void-pointer arithmetic. This patch fixes this in
various ways. Usually the strategy that required the least changes was used.
Signed-off-by: NFlorian Forster <octo@verplant.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

When tracking directories with nearly all of its files at
the most nested levels, --rmdir would accidentally go too
far when deleting.

Of course, we'll add a test for this condition, too.

Makefile: automatically run new tests as they appear in t/
Signed-off-by: NEric Wong <normalperson@yhbt.net>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Another late-night bug. Sorry again.
Signed-off-by: NJohannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This bug was hidden by the "future-proofing" of the test. Sigh.

When neither GIT_CONFIG nor GIT_CONFIG_LOCAL is set, do not use NULL,
but $GIT_DIR/config. Instead of using $GIT_DIR/config when only
GIT_CONFIG_LOCAL is set. Sorry.
Signed-off-by: NJohannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

We've had this notion of a "object_list" for a long time, which eventually
grew a "name" member because some users (notably git-rev-list) wanted to
name each object as it is generated.

That object_list is great for some things, but it isn't all that wonderful
for others, and the "name" member is generally not used by everybody.

This patch splits the users of the object_list array up into two: the
traditional list users, who want the list-like format, and who don't
actually use or want the name. And another class of users that really used
the list as an extensible array, and generally wanted to name the objects.

The patch is fairly straightforward, but it's also biggish. Most of it
really just cleans things up: switching the revision parsing and listing
over to the array makes things like the builtin-diff usage much simpler
(we now see exactly how many members the array has, and we don't get the
objects reversed from the order they were on the command line).

One of the main reasons for doing this at all is that the malloc overhead
of the simple object list was actually pretty high, and the array is just
a lot denser. So this patch brings down memory usage by git-rev-list by
just under 3% (on top of all the other memory use optimizations) on the
mozilla archive.

It does add more lines than it removes, and more importantly, it adds a
whole new infrastructure for maintaining lists of objects, but on the
other hand, the new dynamic array code is pretty obvious. The change to
builtin-diff-tree.c shows a fairly good example of why an array interface
is sometimes more natural, and just much simpler for everybody.
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

It was reported that under one implementation of socks client
"git clone" fails with "error: waitpid failed (No child processes)",
because "git" is spawned after setting SIGCHLD to SIG_IGN.

Arguably it may be a broken setting, but we should protect
ourselves so that we can get reliable results from waitpid() for
the children we care about.

This patch resets SIGCHLD to SIG_DFL in three places:

 - connect.c::git_connect() - initiators of git native
   protocol transfer are covered with this.

 - daemon.c::main() - obviously.

 - merge-index.c::main() - obviously.

There are other programs that do fork() but do not waitpid():
http-push, imap-send.  upload-pack does not either, but in the
case of that program, each of the forked halves runs exec()
another program, so this change would not have much effect
there.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This reformats the change 621c53cc
introduced to match what upstream author implemented in libxdiff-0.21
without changing any logic (hopefully ;-).  This is to help keep
us in sync with the upstream.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Running git-format-patch on patches from Lukas destroyed
the From: line.  This fixes it.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

There seems to be at least one implementation of Perl which requires the
user to specify an extension for backup files.

Reported by Alex Riesen.
Signed-off-by: NDennis Stosberg <dennis@stosberg.net>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This creates a simple specialized object allocator for basic
objects.

This avoids wasting space with malloc overhead (metadata and
extra alignment), since the specialized allocator knows the
alignment, and that objects, once allocated, are never freed.

It also allows us to track some basic statistics about object
allocations. For example, for the mozilla import, it shows
object usage as follows:

     blobs:   627629 (14710 kB)
     trees:  1119035 (34969 kB)
   commits:   196423  (8440 kB)
      tags:     1336    (46 kB)

and the simpler allocator shaves off about 2.5% off the memory
footprint off a "git-rev-list --all --objects", and is a bit
faster too.

[ Side note: this concludes the series of "save memory in object storage".
  The thing is, there simply isn't much more to be saved on the objects.

  Doing "git-rev-list --all --objects" on the mozilla archive has a final
  total RSS of 131498 pages for me: that's about 513MB. Of that, the
  object overhead is now just 56MB, the rest is going somewhere else (put
  another way: the fact that this patch shaves off 2.5% of the total
  memory overhead, considering that objects are now not much more than 10%
  of the total shows how big the wasted space really was: this makes
  object allocations much more memory- and time-efficient).

  I haven't looked at where the rest is, but I suspect the bulk of it is
  just the pack-file loading. It may be that we should pack the tree
  objects separately from the blob objects: for git-rev-list --objects, we
  don't actually ever need to even look at the blobs, but since trees and
  blobs are interspersed in the pack-file, we end up not being dense in
  the tree accesses, so we end up looking at more pages than we strictly
  need to.

  So with a 535MB pack-file, it's entirely possible - even likely - that
  most of the remaining RSS is just the mmap of the pack-file itself. We
  don't need to map in _all_ of it, but we do end up mapping a fair
  amount. ]
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This patch is based on Pasky's, with three notable differences:

- I did not yet update the documentation
- I named it .gitconfig, not .gitrc
- git-repo-config does not barf when a unique key is overridden locally

The last means that if you have something like

	[alias]
		l = log --stat -M

in ~/.gitconfig, and

	[alias]
		l = log --stat -M next..

in $GIT_DIR/config, then

	git-repo-config alias.l

returns only one value, namely the value from $GIT_DIR/config.

If you set the environment variable GIT_CONFIG, $HOME/.gitconfig is not
read, and neither $GIT_DIR/config, but $GIT_CONFIG instead.

If you set GIT_CONFIG_LOCAL instead, it is interpreted instead of
$GIT_DIR/config, but $HOME/.gitconfig is still read.
Signed-off-by: NJohannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

When setting a config variable, git_config_set() ignored the variables
GIT_CONFIG and GIT_CONFIG_LOCAL. Now, when GIT_CONFIG_LOCAL is set, it
will write to that file. If not, GIT_CONFIG is checked, and only as a
fallback, the change is written to $GIT_DIR/config.

Add a test for it, and also future-proof the test for the upcoming
$HOME/.gitconfig support.
Signed-off-by: NJohannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

According to ANSI C99 bitfields are only defined for `signed int' and `unsigned
int'. This patch corrects the bitfield in the `msg_data_t' type from
`imap-send.c'.
Signed-off-by: NFlorian Forster <octo@verplant.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Empty initializers for structures are not allowed in ANSI C99. This patch
removes such an initializer from `builtin-read-tree.c'. Since the struct was
static (and is therefore implicitely initialized to zero anyway) it wasn't
actually needed.
Signed-off-by: NFlorian Forster <octo@verplant.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

ANSI C99 requires void-pointers when using the `%p' format. This patch adds the
neccessary cast in `blame.c'.
Signed-off-by: NFlorian Forster <octo@verplant.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Since structures with `flexible array members' are an incomplete datatype ANSI
C99 forbids creating instances of them. This patch removes such an instance
from `diff-lib.c' and replaces it with a pointer to a `struct
combine_diff_path'. Since all neccessary memory is allocated at once the number
of calls to `xmalloc' is not increased.
Signed-off-by: NFlorian Forster <octo@verplant.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

When initializing a `flexible array member' the macro `FLEX_ARRAY' should be
used. This was forgotten in `diff-delta.c'.
Signed-off-by: NFlorian Forster <octo@verplant.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Though very nice and readable, the "case 'a'...'z':" construct is not ANSI C99
compliant. This patch unfolds the range in `quote.c' and substitutes the
switch-statement with an if-statement in `http-fetch.c' and `http-push.c'.
Signed-off-by: NFlorian Forster <octo@verplant.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Add $GIT_CONFIG environment variable whose content is used instead
of .git/config if set. Also add $GIT_CONFIG_LOCAL as a
forward-compatibility cue for whenever we will finally come to support]
global configuration files (properly).
Signed-off-by: NPetr Baudis <pasky@suse.cz>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

* yl/build:
  auto-detect changed prefix and/or changed build flags

* jc/shared:
  shared repository: optionally allow reading to "others".