Commit Graph

78 Commits

Author SHA1 Message Date
Junio C Hamano
39fa6112ec Merge branch 'sb/atomic-push'
"git push" has been taught a "--atomic" option that makes push to
update more than one ref an "all-or-none" affair.

* sb/atomic-push:
  Document receive.advertiseatomic
  t5543-atomic-push.sh: add basic tests for atomic pushes
  push.c: add an --atomic argument
  send-pack.c: add --atomic command line argument
  send-pack: rename ref_update_to_be_sent to check_to_send_update
  receive-pack.c: negotiate atomic push support
  receive-pack.c: add execute_commands_atomic function
  receive-pack.c: move transaction handling in a central place
  receive-pack.c: move iterating over all commands outside execute_commands
  receive-pack.c: die instead of error in case of possible future bug
  receive-pack.c: shorten the execute_commands loop over all commands
2015-02-11 13:43:51 -08:00
Ronnie Sahlberg
d0e8e09cd8 push.c: add an --atomic argument
Add a command line argument to the git push command to request atomic
pushes.

Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-01-07 19:56:44 -08:00
Junio C Hamano
23c0956441 Merge branch 'jk/push-simple'
Git 2.0 was supposed to make the "simple" mode for the default of
"git push", but it didn't.

* jk/push-simple:
  push: truly use "simple" as default, not "upstream"
2014-12-12 14:31:40 -08:00
Junio C Hamano
bb87344a74 Merge branch 'rt/push-recurse-submodule-usage-string'
* rt/push-recurse-submodule-usage-string:
  builtin/push.c: fix description of --recurse-submodules option
2014-12-12 14:31:38 -08:00
Jeff King
00a6fa0720 push: truly use "simple" as default, not "upstream"
The plan for the push.default transition had all along been
to use the "simple" method rather than "upstream" as a
default if the user did not specify their own push.default
value. Commit 11037ee (push: switch default from "matching"
to "simple", 2013-01-04) tried to implement that by moving
PUSH_DEFAULT_UNSPECIFIED in our switch statement to
fall-through to the PUSH_DEFAULT_SIMPLE case.

When the commit that became 11037ee was originally written,
that would have been enough. We would fall through to
calling setup_push_upstream() with the "simple" parameter
set to 1. However, it was delayed for a while until we were
ready to make the transition in Git 2.0.

And in the meantime, commit ed2b182 (push: change `simple`
to accommodate triangular workflows, 2013-06-19) threw a
monkey wrench into the works. That commit drops the "simple"
parameter to setup_push_upstream, and instead checks whether
the global "push_default" is PUSH_DEFAULT_SIMPLE. This is
right when the user has explicitly configured push.default
to simple, but wrong when we are a fall-through for the
"unspecified" case.

We never noticed because our push.default tests do not cover
the case of the variable being totally unset; they only
check the "simple" behavior itself.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-11-30 18:11:25 -08:00
Ralf Thielow
eedc4be54f builtin/push.c: fix description of --recurse-submodules option
The description of the option for argument "recurse-submodules"
is marked for translation even if it expects the untranslated
string and it's missing the option "on-demand" which was introduced
in eb21c73 (2014-03-29, push: teach --recurse-submodules the on-demand
option). Fix this by unmark the string for translation and add the
missing option.

Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-11-18 11:19:16 -08:00
Michael J Gruber
b9459019bb push: heed user.signingkey for signed pushes
push --signed promises to take user.signingkey as the signing key but
fails to read the config.

Make it do so.

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-24 10:50:05 -07:00
Junio C Hamano
a85b377d04 push: the beginning of "git push --signed"
While signed tags and commits assert that the objects thusly signed
came from you, who signed these objects, there is not a good way to
assert that you wanted to have a particular object at the tip of a
particular branch.  My signing v2.0.1 tag only means I want to call
the version v2.0.1, and it does not mean I want to push it out to my
'master' branch---it is likely that I only want it in 'maint', so
the signature on the object alone is insufficient.

The only assurance to you that 'maint' points at what I wanted to
place there comes from your trust on the hosting site and my
authentication with it, which cannot easily audited later.

Introduce a mechanism that allows you to sign a "push certificate"
(for the lack of better name) every time you push, asserting that
what object you are pushing to update which ref that used to point
at what other object.  Think of it as a cryptographic protection for
ref updates, similar to signed tags/commits but working on an
orthogonal axis.

The basic flow based on this mechanism goes like this:

 1. You push out your work with "git push --signed".

 2. The sending side learns where the remote refs are as usual,
    together with what protocol extension the receiving end
    supports.  If the receiving end does not advertise the protocol
    extension "push-cert", an attempt to "git push --signed" fails.

    Otherwise, a text file, that looks like the following, is
    prepared in core:

	certificate version 0.1
	pusher Junio C Hamano <gitster@pobox.com> 1315427886 -0700

	7339ca65... 21580ecb... refs/heads/master
	3793ac56... 12850bec... refs/heads/next

    The file begins with a few header lines, which may grow as we
    gain more experience.  The 'pusher' header records the name of
    the signer (the value of user.signingkey configuration variable,
    falling back to GIT_COMMITTER_{NAME|EMAIL}) and the time of the
    certificate generation.  After the header, a blank line follows,
    followed by a copy of the protocol message lines.

    Each line shows the old and the new object name at the tip of
    the ref this push tries to update, in the way identical to how
    the underlying "git push" protocol exchange tells the ref
    updates to the receiving end (by recording the "old" object
    name, the push certificate also protects against replaying).  It
    is expected that new command packet types other than the
    old-new-refname kind will be included in push certificate in the
    same way as would appear in the plain vanilla command packets in
    unsigned pushes.

    The user then is asked to sign this push certificate using GPG,
    formatted in a way similar to how signed tag objects are signed,
    and the result is sent to the other side (i.e. receive-pack).

    In the protocol exchange, this step comes immediately before the
    sender tells what the result of the push should be, which in
    turn comes before it sends the pack data.

 3. When the receiving end sees a push certificate, the certificate
    is written out as a blob.  The pre-receive hook can learn about
    the certificate by checking GIT_PUSH_CERT environment variable,
    which, if present, tells the object name of this blob, and make
    the decision to allow or reject this push.  Additionally, the
    post-receive hook can also look at the certificate, which may be
    a good place to log all the received certificates for later
    audits.

Because a push certificate carry the same information as the usual
command packets in the protocol exchange, we can omit the latter
when a push certificate is in use and reduce the protocol overhead.
This however is not included in this patch to make it easier to
review (in other words, the series at this step should never be
released without the remainder of the series, as it implements an
interim protocol that will be incompatible with the final one).
As such, the documentation update for the protocol is left out of
this step.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-15 13:23:20 -07:00
Jeff King
cf4fff579e refactor skip_prefix to return a boolean
The skip_prefix() function returns a pointer to the content
past the prefix, or NULL if the prefix was not found. While
this is nice and simple, in practice it makes it hard to use
for two reasons:

  1. When you want to conditionally skip or keep the string
     as-is, you have to introduce a temporary variable.
     For example:

       tmp = skip_prefix(buf, "foo");
       if (tmp)
	       buf = tmp;

  2. It is verbose to check the outcome in a conditional, as
     you need extra parentheses to silence compiler
     warnings. For example:

       if ((cp = skip_prefix(buf, "foo"))
	       /* do something with cp */

Both of these make it harder to use for long if-chains, and
we tend to use starts_with() instead. However, the first line
of "do something" is often to then skip forward in buf past
the prefix, either using a magic constant or with an extra
strlen(3) (which is generally computed at compile time, but
means we are repeating ourselves).

This patch refactors skip_prefix() to return a simple boolean,
and to provide the pointer value as an out-parameter. If the
prefix is not found, the out-parameter is untouched. This
lets you write:

  if (skip_prefix(arg, "foo ", &arg))
	  do_foo(arg);
  else if (skip_prefix(arg, "bar ", &arg))
	  do_bar(arg);

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-06-20 10:44:43 -07:00
Junio C Hamano
e3f1185946 Merge branch 'cc/starts-n-ends-with-endgame'
prefixcmp/suffixcmp are gone.
2014-03-07 15:18:28 -08:00
Junio C Hamano
289ca27dee Merge branch 'gj/push-more-verbose-advice' 2014-03-07 15:17:20 -08:00
Junio C Hamano
009055f3ec Merge branch 'jc/push-2.0-default-to-simple'
Finally update the "git push" default behaviour to "simple".
2014-03-07 15:13:15 -08:00
Junio C Hamano
7cdebd8a20 Merge branch 'jc/push-refmap'
Make "git push origin master" update the same ref that would be
updated by our 'master' when "git push origin" (no refspecs) is run
while the 'master' branch is checked out, which makes "git push"
more symmetric to "git fetch" and more usable for the triangular
workflow.

* jc/push-refmap:
  push: also use "upstream" mapping when pushing a single ref
  push: use remote.$name.push as a refmap
  builtin/push.c: use strbuf instead of manual allocation
2013-12-27 14:57:50 -08:00
Junio C Hamano
fc9261ca61 push: also use "upstream" mapping when pushing a single ref
When the user is using the 'upstream' mode, these commands:

    $ git push
    $ git push origin

would find the 'upstream' branch for the current branch, and then
push the current branch to update it.  However, pushing a single
branch explicitly, i.e.

    $ git push origin $(git symbolic-ref --short HEAD)

would not go through the same ref mapping process, and ends up
updating the branch at 'origin' of the same name, which may not
necessarily be the upstream of the branch being pushed.

In the spirit similar to the previous one, map a colon-less refspec
using the upstream mapping logic.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-12-04 15:12:34 -08:00
Junio C Hamano
ca02465b41 push: use remote.$name.push as a refmap
Since f2690487 (fetch: opportunistically update tracking refs,
2013-05-11), we stopped taking a non-storing refspec given on the
command line of "git fetch" literally, and instead started mapping
it via remote.$name.fetch refspecs.  This allows

    $ git fetch origin master

from the 'origin' repository, which is configured with

    [remote "origin"]
        fetch = +refs/heads/*:refs/remotes/origin/*

to update refs/remotes/origin/master with the result, as if the
command line were

    $ git fetch origin +master:refs/remotes/origin/master

to reduce surprises and improve usability.  Before that change, a
refspec on the command line without a colon was only to fetch the
history and leave the result in FETCH_HEAD, without updating the
remote-tracking branches.

When you are simulating a fetch from you by your mothership with a
push by you into your mothership, instead of having:

    [remote "satellite"]
        fetch = +refs/heads/*:refs/remotes/satellite/*

on the mothership repository and running:

    mothership$ git fetch satellite

you would have:

    [remote "mothership"]
        push = +refs/heads/*:refs/remotes/satellite/*

on your satellite machine, and run:

    satellite$ git push mothership

Because we so far did not make the corresponding change to the push
side, this command:

    satellite$ git push mothership master

does _not_ allow you on the satellite to only push 'master' out but
still to the usual destination (i.e. refs/remotes/satellite/master).

Implement the logic to map an unqualified refspec given on the
command line via the remote.$name.push refspec.  This will bring a
bit more symmetry between "fetch" and "push".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-12-04 15:11:08 -08:00
Junio C Hamano
50d829c11a builtin/push.c: use strbuf instead of manual allocation
The command line arguments given to "git push" are massaged into
a list of refspecs in set_refspecs() function. This was implemented
using xmalloc, strcpy and friends, but it is much easier to read if
done using strbuf.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-12-03 14:47:18 -08:00
Junio C Hamano
11037ee7e3 push: switch default from "matching" to "simple"
We promised to change the behaviour of lazy "git push [there]" that
does not say what to push on the command line from "matching" to
"simple" in Git 2.0.

This finally flips that bit.

Helped-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-11-13 14:12:37 -08:00
Greg Jacobson
c13a5fe47b push: enhance unspecified push default warning
When the unset push.default warning message is displayed this may be
the first time many users encounter push.default.

Explain in the warning message in a compact manner what push.default
is and what the change means to the end-user to help the users decide.

Signed-off-by: Greg Jacobson <coder5000@gmail.com>
Helped-by: Jonathan Nieder <jrnieder@gmail.com>
Helped-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Helped-by: Marc Branchaud <marcnarc@xiplink.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-11-13 14:12:23 -08:00
Junio C Hamano
2de0f39cd2 Merge branch 'nd/push-no-thin'
"git push --no-thin" was a no-op by mistake.

* nd/push-no-thin:
  push: respect --no-thin
2013-09-11 14:56:59 -07:00
Junio C Hamano
2233ad4534 Merge branch 'jc/push-cas'
Allow a safer "rewind of the remote tip" push than blind "--force",
by requiring that the overwritten remote ref to be unchanged since
the new history to replace it was prepared.

The machinery is more or less ready.  The "--force" option is again
the big red button to override any safety, thanks to J6t's sanity
(the original round allowed --lockref to defeat --force).

The logic to choose the default implemented here is fragile
(e.g. "git fetch" after seeing a failure will update the
remote-tracking branch and will make the next "push" pass,
defeating the safety pretty easily).  It is suitable only for the
simplest workflows, and it may hurt users more than it helps them.

* jc/push-cas:
  push: teach --force-with-lease to smart-http transport
  send-pack: fix parsing of --force-with-lease option
  t5540/5541: smart-http does not support "--force-with-lease"
  t5533: test "push --force-with-lease"
  push --force-with-lease: tie it all together
  push --force-with-lease: implement logic to populate old_sha1_expect[]
  remote.c: add command line option parser for "--force-with-lease"
  builtin/push.c: use OPT_BOOL, not OPT_BOOLEAN
  cache.h: move remote/connect API out of it
2013-09-09 14:30:29 -07:00
Junio C Hamano
a86a8b9752 Merge branch 'sb/parseopt-boolean-removal'
Convert most uses of OPT_BOOLEAN/OPTION_BOOLEAN that can use
OPT_BOOL/OPTION_BOOLEAN which have much saner semantics, and turn
remaining ones into OPT_SET_INT, OPT_COUNTUP, etc. as necessary.

* sb/parseopt-boolean-removal:
  revert: use the OPT_CMDMODE for parsing, reducing code
  checkout-index: fix negations of even numbers of -n
  config parsing options: allow one flag multiple times
  hash-object: replace stdin parsing OPT_BOOLEAN by OPT_COUNTUP
  branch, commit, name-rev: ease up boolean conditions
  checkout: remove superfluous local variable
  log, format-patch: parsing uses OPT__QUIET
  Replace deprecated OPT_BOOLEAN by OPT_BOOL
  Remove deprecated OPTION_BOOLEAN for parsing arguments
2013-09-04 12:39:03 -07:00
Nguyễn Thái Ngọc Duy
f7c815c3ee push: respect --no-thin
- From the beginning of push.c in 755225d, 2006-04-29, "thin" option
  was enabled by default but could be turned off with --no-thin.

- Then Shawn changed the default to 0 in favor of saving server
  resources in a4503a1, 2007-09-09. --no-thin worked great.

- One day later, in 9b28851 Daniel extracted some code from push.c to
  create transport.c. He (probably accidentally) flipped the default
  value from 0 to 1 in transport_get().

From then on --no-thin is effectively no-op because git-push still
expects the default value to be false and only calls
transport_set_option() when "thin" variable in push.c is true (which
is unnecessary). Correct the code to respect --no-thin by calling
transport_set_option() in both cases.

receive-pack learns about --reject-thin-pack-for-testing option,
which only is for testing purposes, hence no document update.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-08-13 10:32:26 -07:00
Stefan Beller
d5d09d4754 Replace deprecated OPT_BOOLEAN by OPT_BOOL
This task emerged from b04ba2bb (parse-options: deprecate OPT_BOOLEAN,
2011-09-27). All occurrences of the respective variables have
been reviewed and none of them relied on the counting up mechanism,
but all of them were using the variable as a true boolean.

This patch does not change semantics of any command intentionally.

Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-08-05 11:32:19 -07:00
Ondřej Bílka
98e023dea4 many small typofixes
Signed-off-by: Ondřej Bílka <neleai@seznam.cz>
Reviewed-by: Marc Branchaud <marcnarc@xiplink.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-29 12:32:25 -07:00
Junio C Hamano
91048a9537 push --force-with-lease: implement logic to populate old_sha1_expect[]
This plugs the push_cas_option data collected by the command line
option parser to the transport system with a new function
apply_push_cas(), which is called after match_push_refs() has
already been called.

At this point, we know which remote we are talking to, and what
remote refs we are going to update, so we can fill in the details
that may have been missing from the command line, such as

 (1) what abbreviated refname the user gave us matches the actual
     refname at the remote; and

 (2) which remote-tracking branch in our local repository to read
     the value of the object to expect at the remote.

to populate the old_sha1_expect[] field of each of the remote ref.
As stated in the documentation, the use of remote-tracking branch
as the default is a tentative one, and we may come up with a better
logic as we gain experience.

Still nobody uses this information, which is the topic of the next
patch.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-22 22:18:19 -07:00
Junio C Hamano
28f5d17611 remote.c: add command line option parser for "--force-with-lease"
Update "git push" and "git send-pack" to parse this commnd line
option.

The intended sematics is:

 * "--force-with-lease" alone, without specifying the details, will
   protect _all_ remote refs that are going to be updated by
   requiring their current value to be the same as some reasonable
   default, unless otherwise specified;

 * "--force-with-lease=refname", without specifying the expected
   value, will protect that refname, if it is going to be updated,
   by requiring its current value to be the same as some reasonable
   default.

 * "--force-with-lease=refname:value" will protect that refname, if
   it is going to be updated, by requiring its current value to be
   the same as the specified value; and

 * "--no-force-with-lease" will cancel all the previous --force-with-lease on the
   command line.

For now, "some reasonable default" is tentatively defined as "the
value of the remote-tracking branch we have for the ref of the
remote being updated", and it is an error if we do not have such a
remote-tracking branch.  But this is known to be fragile, its use is
not yet recommended, and hopefully we will find more reasonable
default as we gain experience with this feature.  The manual marks
the feature as experimental unless the expected value is specified
explicitly for this reason.

Because the command line options are parsed _before_ we know which
remote we are pushing to, there needs further processing to the
parsed data after we instantiate the transport object to:

 * expand "refname" given by the user to a full refname to be
   matched with the list of "struct ref" used in match_push_refs()
   and set_ref_status_for_push(); and

 * learning the actual local ref that is the remote-tracking branch
   for the specified remote ref.

Further, some processing need to be deferred until we find the set
of remote refs and match_push_refs() returns in order to find the
ones that need to be checked after explicit ones have been processed
for "--force-with-lease" (no specific details).

These post-processing will be the topic of the next patch.

This option was originally called "cas" (for "compare and swap"),
the name which nobody liked because it was too technical.  The
second attempt called it "lockref" (because it is conceptually like
pushing after taking a lock) but the word "lock" was hated because
it implied that it may reject push by others, which is not the way
this option works.  This round calls it "force-with-lease".  You
assume you took the lease on the ref when you fetched to decide what
the rebased history should be, and you can push back only if the
lease has not been broken.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-22 22:02:55 -07:00
Junio C Hamano
5b307e95e8 Merge branch 'jk/pull-to-integrate'
* jk/pull-to-integrate:
  pull: change the description to "integrate" changes
  push: avoid suggesting "merging" remote changes
2013-07-12 12:04:06 -07:00
Junio C Hamano
ab22d2eb83 builtin/push.c: use OPT_BOOL, not OPT_BOOLEAN
The command line parser of "git push" for "--tags", "--delete", and
"--thin" options still used outdated OPT_BOOLEAN.  Because these
options do not give escalating levels when given multiple times,
they should use OPT_BOOL.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-08 22:19:15 -07:00
John Keeping
fc6c4e96f1 push: avoid suggesting "merging" remote changes
With some workflows, it is more suitable to rebase on top of remote
changes when a push does not fast-forward.  Change the advice messages
in git-push to suggest that a user "integrate the remote changes"
instead of "merge the remote changes" to make this slightly clearer.

Also change the suggested 'git pull' to 'git pull ...' to hint to users
that they may want to add other parameters.

Suggested-by: Philip Oakley <philipoakley@iee.org>
Signed-off-by: John Keeping <john@keeping.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-07 13:35:48 -07:00
Ramkumar Ramachandra
ed2b18292b push: change simple to accommodate triangular workflows
When remote.pushdefault or branch.<name>.pushremote is set to a
remote that is different from where you usually fetch from (i.e. a
triangular workflow), master@{u} != origin, and push.default is set
to `upstream` or `simple` would fail with this error:

  $ git push
  fatal: You are pushing to remote 'origin', which is not the upstream of
  your current branch 'master', without telling me what to push
  to update which remote branch.

The very name of "upstream" indicates that it is only suitable for
use in central workflows; let us not even attempt to give it a new
meaning in triangular workflows, and error out as before.

However, the `simple` does not have to share this error.  It is
poised to be the default for Git 2.0, and we would like it to do
something sensible in triangular workflows.

Redefine "simple" as "safer upstream" for centralized workflow as
before, but work as "current" for triangular workflow.

We may want to make it "safer current", but that is a separate
issue.

Reported-by: Leandro Lucarella <leandro.lucarella@sociomantic.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-06-24 10:16:49 -07:00
Junio C Hamano
b2ed944af7 push: switch default from "matching" to "simple"
We promised to change the behaviour of lazy "git push [there]" that
does not say what to push on the command line from "matching" to
"simple" in Git 2.0.

This finally flips that bit.

Helped-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-06-18 12:36:00 -07:00
Ramkumar Ramachandra
0f075b2208 push: make push.default = current use resolved HEAD
With this change, the output of the push (with push.default set to
current) changes subtly from:

  $ git push
  ...
   * [new branch]      HEAD -> push-current-head

to:

  $ git push
  ...
   * [new branch]      push-current-head -> push-current-head

This patch was written with a different motivation. There is a problem
unique to push.default = current:

  # on branch push-current-head
  $ git push
  # on another terminal
  $ git checkout master
  # return to the first terminal
  # the push tried to push master!

This happens because the 'git checkout' on the second terminal races
with the 'git push' on the first terminal.  Although this patch does not
solve the core problem (there is still no guarantee that 'git push' on
the first terminal will resolve HEAD before 'git checkout' changes HEAD
on the second), it works in practice.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-29 15:34:07 -07:00
Ramkumar Ramachandra
7b2ecd8108 push: fail early with detached HEAD and current
Setting push.default to current adds the refspec "HEAD" for the
transport layer to handle.  If "HEAD" doesn't resolve to a branch (and
since no refspec rhs is specified), the push fails after some time with
a cryptic error message:

  $ git push
  error: unable to push to unqualified destination: HEAD
  The destination refspec neither matches an existing ref on the remote nor
  begins with refs/, and we are unable to guess a prefix based on the source ref.
  error: failed to push some refs to 'git@github.com:artagnon/git'

Fail early with a nicer error message:

  $ git push
  fatal: You are not currently on a branch.
  To push the history leading to the current (detached HEAD)
  state now, use

    git push ram HEAD:<name-of-remote-branch>

Just like in the upstream and simple cases.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-29 15:34:04 -07:00
Ramkumar Ramachandra
35ee69c0f6 push: factor out the detached HEAD error message
With push.default set to upstream or simple, and a detached HEAD, git
push prints the following error:

  $ git push
  fatal: You are not currently on a branch.
  To push the history leading to the current (detached HEAD)
  state now, use

    git push ram HEAD:<name-of-remote-branch>

This error is not unique to upstream or simple: current cannot push with
a detached HEAD either.  So, factor out the error string in preparation
for using it in current.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-29 12:31:10 -07:00
Ramkumar Ramachandra
f24f715e05 remote.c: introduce a way to have different remotes for fetch/push
Currently, do_push() in push.c calls remote_get(), which gets the
configured remote for fetching and pushing.  Replace this call with a
call to pushremote_get() instead, a new function that will return the
remote configured specifically for pushing.  This function tries to
work with the string pushremote_name, before falling back to the
codepath of remote_get().  This patch has no visible impact, but
serves to enable future patches to introduce configuration variables
to set pushremote_name.  For example, you can now do the following in
handle_config():

    if (!strcmp(key, "remote.pushdefault"))
       git_config_string(&pushremote_name, key, value);

Then, pushes will automatically go to the remote specified by
remote.pushdefault.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-02 10:41:42 -07:00
Junio C Hamano
55f6fbef3d Merge branch 'jc/push-follow-tag'
The new "--follow-tags" option tells "git push" to push relevant
annotated tags when pushing branches out.

* jc/push-follow-tag:
  push: --follow-tags
  commit.c: use clear_commit_marks_many() in in_merge_bases_many()
  commit.c: add in_merge_bases_many()
  commit.c: add clear_commit_marks_many()
2013-03-25 14:00:41 -07:00
Junio C Hamano
c2aba155da push: --follow-tags
The new option "--follow-tags" tells "git push" to push annotated
tags that are missing from the other side and that can be reached by
the history that is otherwise pushed out.

For example, if you are using the "simple", "current", or "upstream"
push, you would ordinarily push the history leading to the commit at
your current HEAD and nothing else.  With this option, you would
also push all annotated tags that can be reached from that commit to
the other side.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-03-05 13:39:46 -08:00
Junio C Hamano
370855e967 Merge branch 'jc/push-reject-reasons'
Improve error and advice messages given locally when "git push"
refuses when it cannot compute fast-forwardness by separating these
cases from the normal "not a fast-forward; merge first and push
again" case.

* jc/push-reject-reasons:
  push: finishing touches to explain REJECT_ALREADY_EXISTS better
  push: introduce REJECT_FETCH_FIRST and REJECT_NEEDS_FORCE
  push: further simplify the logic to assign rejection reason
  push: further clean up fields of "struct ref"
2013-02-04 10:25:04 -08:00
Junio C Hamano
b4cf8db275 push: finishing touches to explain REJECT_ALREADY_EXISTS better
Now that "already exists" errors are given only when a push tries to
update an existing ref in refs/tags/ hierarchy, we can say "the
tag", instead of "the destination reference", and that is far easier
to understand.

Pointed out by Chris Rorvick.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-24 23:28:50 -08:00
Junio C Hamano
75e5c0dc55 push: introduce REJECT_FETCH_FIRST and REJECT_NEEDS_FORCE
When we push to update an existing ref, if:

 * the object at the tip of the remote is not a commit; or
 * the object we are pushing is not a commit,

it won't be correct to suggest to fetch, integrate and push again,
as the old and new objects will not "merge".  We should explain that
the push must be forced when there is a non-committish object is
involved in such a case.

If we do not have the current object at the tip of the remote, we do
not even know that object, when fetched, is something that can be
merged.  In such a case, suggesting to pull first just like
non-fast-forward case may not be technically correct, but in
practice, most such failures are seen when you try to push your work
to a branch without knowing that somebody else already pushed to
update the same branch since you forked, so "pull first" would work
as a suggestion most of the time.  And if the object at the tip is
not a commit, "pull first" will fail, without making any permanent
damage.  As a side effect, it also makes the error message the user
will get during the next "push" attempt easier to understand, now
the user is aware that a non-commit object is involved.

In these cases, the current code already rejects such a push on the
client end, but we used the same error and advice messages as the
ones used when rejecting a non-fast-forward push, i.e. pull from
there and integrate before pushing again.

Introduce new rejection reasons and reword the messages
appropriately.

[jc: with help by Peff on message details]

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-24 14:37:23 -08:00
Aaron Schrab
ec55559f93 push: Add support for pre-push hooks
Add support for a pre-push hook which can be used to determine if the
set of refs to be pushed is suitable for the target repository.  The
hook is run with two arguments specifying the name and location of the
destination repository.

Information about what is to be pushed is provided by sending lines of
the following form to the hook's standard input:

  <local ref> SP <local sha1> SP <remote ref> SP <remote sha1> LF

If the hook exits with a non-zero status, the push will be aborted.

This will allow the script to determine if the push is acceptable based
on the target repository and branch(es), the commits which are to be
pushed, and even the source branches in some cases.

Signed-off-by: Aaron Schrab <aaron@schrab.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-18 11:13:22 -08:00
Chris Rorvick
b450568209 push: allow already-exists advice to be disabled
Add 'advice.pushAlreadyExists' option to disable the advice shown when
an update is rejected for a reference that is not allowed to update at
all (verses those that are allowed to fast-forward.)

Signed-off-by: Chris Rorvick <chris@rorvick.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-03 08:04:09 -08:00
Chris Rorvick
1184564eac push: rename config variable for more general use
The 'pushNonFastForward' advice config can be used to squelch several
instances of push-related advice.  Rename it to 'pushUpdateRejected' to
cover other reject scenarios that are unrelated to fast-forwarding.
Retain the old name for compatibility.

Signed-off-by: Chris Rorvick <chris@rorvick.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-03 08:04:08 -08:00
Chris Rorvick
dbfeddb12e push: require force for refs under refs/tags/
References are allowed to update from one commit-ish to another if the
former is an ancestor of the latter.  This behavior is oriented to
branches which are expected to move with commits.  Tag references are
expected to be static in a repository, though, thus an update to
something under refs/tags/ should be rejected unless the update is
forced.

Signed-off-by: Chris Rorvick <chris@rorvick.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-02 01:44:34 -08:00
Chris Rorvick
b24e6047a8 push: add advice for rejected tag reference
Advising the user to fetch and merge only makes sense if the rejected
reference is a branch.  If none of the rejections are for branches, just
tell the user the reference already exists.

Signed-off-by: Chris Rorvick <chris@rorvick.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-02 01:39:50 -08:00
Chris Rorvick
10643d4ec3 push: return reject reasons as a bitset
Pass all rejection reasons back from transport_push().  The logic is
simpler and more flexible with regard to providing useful feedback.

Signed-off-by: Chris Rorvick <chris@rorvick.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-02 01:37:20 -08:00
Junio C Hamano
096bbd6537 Merge branch 'nd/i18n-parseopt-help'
A lot of i18n mark-up for the help text from "git <cmd> -h".

* nd/i18n-parseopt-help: (66 commits)
  Use imperative form in help usage to describe an action
  Reduce translations by using same terminologies
  i18n: write-tree: mark parseopt strings for translation
  i18n: verify-tag: mark parseopt strings for translation
  i18n: verify-pack: mark parseopt strings for translation
  i18n: update-server-info: mark parseopt strings for translation
  i18n: update-ref: mark parseopt strings for translation
  i18n: update-index: mark parseopt strings for translation
  i18n: tag: mark parseopt strings for translation
  i18n: symbolic-ref: mark parseopt strings for translation
  i18n: show-ref: mark parseopt strings for translation
  i18n: show-branch: mark parseopt strings for translation
  i18n: shortlog: mark parseopt strings for translation
  i18n: rm: mark parseopt strings for translation
  i18n: revert, cherry-pick: mark parseopt strings for translation
  i18n: rev-parse: mark parseopt strings for translation
  i18n: reset: mark parseopt strings for translation
  i18n: rerere: mark parseopt strings for translation
  i18n: status: mark parseopt strings for translation
  i18n: replace: mark parseopt strings for translation
  ...
2012-09-07 11:09:09 -07:00
Junio C Hamano
b9148c3763 Merge branch 'mm/push-default-switch-warning'
In the next major release, we will switch "git push [$there]" that
does not say what to push from the traditional "matching" to the
updated "simple" semantics, that pushes the current branch to the
branch with the same name only when the current branch is set to
integrate with that remote branch (all other cases will error out).

* mm/push-default-switch-warning:
  push: start warning upcoming default change for push.default
2012-08-27 11:54:04 -07:00
Nguyễn Thái Ngọc Duy
f63cf8c9fb Use imperative form in help usage to describe an action
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-08-22 12:02:28 -07:00
Nguyễn Thái Ngọc Duy
78dafaa5cb i18n: push: mark parseopt strings for translation
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-08-20 12:23:19 -07:00