Commit Graph

420 Commits

Author SHA1 Message Date
Michael Haggerty
287750507d resolve_ref(): turn buffer into a proper string as soon as possible
Immediately strip off trailing spaces and null-terminate the string
holding the contents of the reference file; this allows the use of
string functions and avoids the need to keep separate track of the
string's length.  (get_sha1_hex() fails automatically if the string is
too short.)

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:30 -07:00
Michael Haggerty
1f58a03838 resolve_ref(): only follow a symlink that contains a valid, normalized refname
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:30 -07:00
Michael Haggerty
b54cb79597 resolve_ref(): use prefixcmp()
Terminate the link content string one step earlier, allowing
prefixcmp() to be used instead of the less clear memcmp().

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:30 -07:00
Michael Haggerty
7bb2bf8e5c resolve_ref(): explicitly fail if a symlink is not readable
Previously the failure came later, after a few steps in which the
length was treated like the actual length of a string.  Even though
the old code gave the same answers, it was somewhat misleading.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:30 -07:00
Michael Haggerty
a40e6fb67a Change check_refname_format() to reject unnormalized refnames
Since much of the infrastructure does not work correctly with
unnormalized refnames, change check_refname_format() to reject them.

Similarly, change "git check-ref-format" to reject unnormalized
refnames by default.  But add an option --normalize, which causes "git
check-ref-format" to normalize the refname before checking its format,
and print the normalized refname.  This is exactly the behavior of the
old --print option, which is retained but deprecated.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:30 -07:00
Michael Haggerty
7e9d2fe960 Do not allow ".lock" at the end of any refname component
Allowing any refname component to end with ".lock" is looking for
trouble; for example,

    $ git br foo.lock/bar
    $ git br foo
    fatal: Unable to create '[...]/.git/refs/heads/foo.lock': File exists.

Therefore, do not allow any refname component to end with ".lock".

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:30 -07:00
Michael Haggerty
49295d4e3f Refactor check_refname_format()
Among other things, extract a function check_refname_component().

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:29 -07:00
Michael Haggerty
8d9c50105f Change check_ref_format() to take a flags argument
Change check_ref_format() to take a flags argument that indicates what
is acceptable in the reference name (analogous to "git
check-ref-format"'s "--allow-onelevel" and "--refspec-pattern").  This
is more convenient for callers and also fixes a failure in the test
suite (and likely elsewhere in the code) by enabling "onelevel" and
"refspec-pattern" to be allowed independently of each other.

Also rename check_ref_format() to check_refname_format() to make it
obvious that it deals with refnames rather than references themselves.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:29 -07:00
Michael Haggerty
9224b73be0 Change bad_ref_char() to return a boolean value
Previously most bad characters were indicated by returning 1, but "*"
was special-cased to return 2 instead of 1.  One caller examined the
return value to see whether the special case occurred.

But it is easier (to document and understand) for bad_ref_char()
simply to return a boolean value, treating "*" like any other bad
character.  Special-case the handling of "*" (which only occurs in
very specific circumstances) at the caller.  The resulting calling
code thereby also becomes more transparent.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:29 -07:00
Julian Phillips
e9c4c11165 refs: Use binary search to lookup refs faster
Currently we linearly search through lists of refs when we need to
find a specific ref.  This can be very slow if we need to lookup a
large number of refs.  By changing to a binary search we can make this
faster.

In order to be able to use a binary search we need to change from
using linked lists to arrays, which we can manage using ALLOC_GROW.

We can now also use the standard library qsort function to sort the
refs arrays.

Signed-off-by: Julian Phillips <julian@quantumfyre.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-09-30 12:28:34 -07:00
Julian Phillips
b4f223c636 Don't sort ref_list too early
get_ref_dir is called recursively for subdirectories, which means that
we were calling sort_ref_list for each directory of refs instead of
once for all the refs.  This is a massive wast of processing, so now
just call sort_ref_list on the result of the top-level get_ref_dir, so
that the sort is only done once.

In the common case of only a few different directories of refs the
difference isn't very noticable, but it becomes very noticeable when
you have a large number of direcotries containing refs (e.g. as
created by Gerrit).

Reported by Martin Fick.

Signed-off-by: Julian Phillips <julian@quantumfyre.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-09-26 18:30:38 -07:00
Junio C Hamano
3ab24efeef refs.c: make create_cached_refs() static
There is nobody outside that calls into this helper function.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-09-11 15:59:26 -07:00
Junio C Hamano
4b1108eec7 Merge branch 'mh/check-ref-format-print-normalize'
* mh/check-ref-format-print-normalize:
  Forbid DEL characters in reference names
  check-ref-format --print: Normalize refnames that start with slashes
2011-09-06 11:42:52 -07:00
Junio C Hamano
2730f55527 Merge branch 'nd/maint-clone-gitdir'
* nd/maint-clone-gitdir:
  clone: allow to clone from .git file
  read_gitfile_gently(): rename misnamed function to read_gitfile()
2011-08-28 21:20:28 -07:00
Michael Haggerty
f3738c1ce9 Forbid DEL characters in reference names
DEL is an ASCII control character and therefore should not be
permitted in reference names.  Add tests for this and other unusual
characters.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-27 11:47:49 -07:00
Junio C Hamano
13d6ec9133 read_gitfile_gently(): rename misnamed function to read_gitfile()
The function was not gentle at all to the callers and died without giving
them a chance to deal with possible errors. Rename it to read_gitfile(),
and update all the callers.

As no existing caller needs a true "gently" variant, we do not bother
adding one at this point.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-22 14:04:56 -07:00
Junio C Hamano
6ed547b53b Merge branch 'js/ref-namespaces'
* js/ref-namespaces:
  ref namespaces: tests
  ref namespaces: documentation
  ref namespaces: Support remote repositories via upload-pack and receive-pack
  ref namespaces: infrastructure
  Fix prefix handling in ref iteration functions
2011-08-17 17:35:38 -07:00
Michael Haggerty
0e88c130f2 Retain caches of submodule refs
Instead of keeping track of one cache for refs in the main repo and
another single cache shared among submodules, keep a linked list of
cached_refs objects, one for each module/submodule. Change
invalidate_cached_refs() to invalidate all caches. (Previously, it
only invalidated the cache of the main repo because the submodule
caches were not reused anyway.)

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-14 15:18:52 -07:00
Michael Haggerty
ce40979cf8 Store the submodule name in struct cached_refs
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-14 15:18:52 -07:00
Michael Haggerty
e5dbf6056f Allocate cached_refs objects dynamically
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-14 15:18:52 -07:00
Michael Haggerty
db4dd93a4a Change the signature of read_packed_refs()
Change it to return a (struct ref_list *) instead of writing into
a cached_refs structure.  (This removes the need to create a
cached_refs structure in resolve_gitlink_packed_ref(), where it
is otherwise unneeded.)

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-14 15:18:52 -07:00
Michael Haggerty
4349a66805 Access reference caches only through new function get_cached_refs()
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-14 15:18:52 -07:00
Michael Haggerty
f130b1168e Extract a function clear_cached_refs()
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-14 15:18:51 -07:00
Josh Triplett
a1bea2c1fc ref namespaces: infrastructure
Add support for dividing the refs of a single repository into multiple
namespaces, each of which can have its own branches, tags, and HEAD.
Git can expose each namespace as an independent repository to pull from
and push to, while sharing the object store, and exposing all the refs
to operations such as git-gc.

Storing multiple repositories as namespaces of a single repository
avoids storing duplicate copies of the same objects, such as when
storing multiple branches of the same source.  The alternates mechanism
provides similar support for avoiding duplicates, but alternates do not
prevent duplication between new objects added to the repositories
without ongoing maintenance, while namespaces do.

To specify a namespace, set the GIT_NAMESPACE environment variable to
the namespace.  For each ref namespace, git stores the corresponding
refs in a directory under refs/namespaces/.  For example,
GIT_NAMESPACE=foo will store refs under refs/namespaces/foo/.  You can
also specify namespaces via the --namespace option to git.

Note that namespaces which include a / will expand to a hierarchy of
namespaces; for example, GIT_NAMESPACE=foo/bar will store refs under
refs/namespaces/foo/refs/namespaces/bar/.  This makes paths in
GIT_NAMESPACE behave hierarchically, so that cloning with
GIT_NAMESPACE=foo/bar produces the same result as cloning with
GIT_NAMESPACE=foo and cloning from that repo with GIT_NAMESPACE=bar.  It
also avoids ambiguity with strange namespace paths such as
foo/refs/heads/, which could otherwise generate directory/file conflicts
within the refs directory.

Add the infrastructure for ref namespaces: handle the GIT_NAMESPACE
environment variable and --namespace option, and support iterating over
refs in a namespace.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Jamey Sharp <jamey@minilop.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-07-06 11:19:24 -07:00
Josh Triplett
b3cfc4066d Fix prefix handling in ref iteration functions
The do_for_each_ref iteration function accepts a prefix and a trim, and
checks for the prefix on each ref before passing in that ref; it also
supports trimming off part of the ref before passing it.  However,
do_for_each_ref used trim as the length of the prefix to check, ignoring
the actual length of the prefix.  Switch to using prefixcmp, checking
the entire length of the prefix string, to properly support a trim value
different than the length of the prefix.

Several callers passed a prefix of "refs/" to filter out everything
outside of refs/, but a trim of 0 to avoid trimming off the "refs/"; the
trim of 0 meant that the filter of "refs/" no longer applied.  Change
these callers to pass an empty prefix instead, to avoid changing the
existing behavior.  Various callers count on this lack of filtering,
such as receive-pack which uses add_extra_ref to add alternates as refs
named ".have"; adding filtering would break that, causing
t5501-fetch-push-alternates.sh to fail.  That lack of filtering doesn't
currently have any other effect, since the loose ref functions can never
supply refs outside of "refs/", and packed-refs will not normally
include such refs unless manually edited.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Jamey Sharp <jamey@minilop.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-07-06 11:12:01 -07:00
Junio C Hamano
b985f2aeca Merge branch 'jc/maint-1.7.3-checkout-describe'
* jc/maint-1.7.3-checkout-describe:
  checkout -b <name>: correctly detect existing branch
2011-06-29 17:03:12 -07:00
Dmitry Ivankov
7be8b3baba Fix typo: existant->existent
refs.c had a error message "Trying to write ref with nonexistant object".
And no tests relied on the wrong spelling.
Also typo was present in some test scripts internals, these tests still pass.

Signed-off-by: Dmitry Ivankov <divanorama@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-06-16 10:33:50 -07:00
Junio C Hamano
c17b229454 checkout -b <name>: correctly detect existing branch
When create a new branch, we fed "refs/heads/<proposed name>" as a string
to get_sha1() and expected it to fail when a branch already exists.

The right way to check if a ref exists is to check with resolve_ref().

A naïve solution that might appear attractive but does not work is to
forbid slashes in get_describe_name() but that will not work. A describe
name is is in the form of "ANYTHING-g<short sha1>", and that ANYTHING part
comes from a original tag name used in the repository the user ran the
describe command. A sick user could have a confusing hierarchical tag
whose name is "refs/heads/foobar" (stored as refs/tags/refs/heads/foobar")
to generate a describe name "refs/heads/foobar-6-g02ac983", and we should
be able to use that name to refer to the object whose name is 02ac983.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-06-05 22:17:04 -07:00
Junio C Hamano
2d984464c6 Merge branch 'hv/submodule-find-ff-merge'
* hv/submodule-find-ff-merge:
  Implement automatic fast-forward merge for submodules
  setup_revisions(): Allow walking history in a submodule
  Teach ref iteration module about submodules

Conflicts:
	submodule.c
2010-08-21 23:27:59 -07:00
Junio C Hamano
fcd91f8de2 Merge branch 'maint'
* maint:
  backmerge a few more fixes to 1.7.1.X series
  rev-parse: fix --parse-opt --keep-dashdash --stop-at-non-option
  fix git branch -m in presence of cross devices

Conflicts:
	RelNotes
	builtin/rev-parse.c
2010-07-07 11:18:26 -07:00
Heiko Voigt
9ef6aeb09f setup_revisions(): Allow walking history in a submodule
By passing the path to a submodule in opt->submodule, the function can
be used to walk history in the named submodule repository, instead of
the toplevel repository.

Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-07 09:48:33 -07:00
Heiko Voigt
0bad611b1e Teach ref iteration module about submodules
We will use this in a later patch to extend setup_revisions() to
load revisions directly from a submodule.

Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-07 09:48:21 -07:00
Pierre Habouzit
765c22588d fix git branch -m in presence of cross devices
When you have for example a bare repository stored on NFS, and that you
create new workdirs locally (using contrib's git-new-workdir), logs/refs
is a symlink to a different device. Hence when the reflogs are renamed,
all must happen below logs/refs or one gets cross device rename errors
like:

  git branch -m foo
  error: unable to move logfile logs/refs/heads/master to tmp-renamed-log: Invalid cross-device link
  fatal: Branch rename failed

The fix is hence to use logs/refs/.tmp-renamed-log as a temporary log
name, instead of just tmp-renamed-log.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-07 09:17:00 -07:00
Junio C Hamano
8d676d85f7 Merge branch 'gv/portable'
* gv/portable:
  test-lib: use DIFF definition from GIT-BUILD-OPTIONS
  build: propagate $DIFF to scripts
  Makefile: Tru64 portability fix
  Makefile: HP-UX 10.20 portability fixes
  Makefile: HPUX11 portability fixes
  Makefile: SunOS 5.6 portability fix
  inline declaration does not work on AIX
  Allow disabling "inline"
  Some platforms lack socklen_t type
  Make NO_{INET_NTOP,INET_PTON} configured independently
  Makefile: some platforms do not have hstrerror anywhere
  git-compat-util.h: some platforms with mmap() lack MAP_FAILED definition
  test_cmp: do not use "diff -u" on platforms that lack one
  fixup: do not unconditionally disable "diff -u"
  tests: use "test_cmp", not "diff", when verifying the result
  Do not use "diff" found on PATH while building and installing
  enums: omit trailing comma for portability
  Makefile: -lpthread may still be necessary when libc has only pthread stubs
  Rewrite dynamic structure initializations to runtime assignment
  Makefile: pass CPPFLAGS through to fllow customization

Conflicts:
	Makefile
	wt-status.h
2010-06-21 06:02:44 -07:00
Thomas Rast
157aaea5ff log_ref_setup: don't return stack-allocated array
859c301 (refs: split log_ref_write logic into log_ref_setup,
2010-05-21) refactors the stack allocation of the log_file array into
the new log_ref_setup() function, but passes it back to the caller.

Since the original intent seems to have been to split the work between
log_ref_setup and log_ref_write, make it the caller's responsibility
to allocate the buffer.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Reported-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-12 09:34:17 -07:00
Erick Mattos
859c30175f refs: split log_ref_write logic into log_ref_setup
Separation of the logic for testing and preparing the reflogs from
function log_ref_write to a new non static new function: log_ref_setup.

This allows to be performed from outside the first all reasonable checks
and procedures for writing reflogs.

Signed-off-by: Erick Mattos <erick.mattos@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-02 11:17:46 -07:00
Gary V. Vaughan
66dbfd55e3 Rewrite dynamic structure initializations to runtime assignment
Unfortunately, there are still plenty of production systems with
vendor compilers that choke unless all compound declarations can be
determined statically at compile time, for example hpux10.20 (I can
provide a comprehensive list of our supported platforms that exhibit
this problem if necessary).

This patch simply breaks apart any compound declarations with dynamic
initialisation expressions, and moves the initialisation until after
the last declaration in the same block, in all the places necessary to
have the offending compilers accept the code.

Signed-off-by: Gary V. Vaughan <gary@thewrittenword.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-05-31 16:59:26 -07:00
Michael J Gruber
b2e256b0f0 refs.c: Write reflogs for notes just like for branch heads
The notes code intends to write reflog entries, but currently they are
not written because log_ref_write() checks for the refname path
explicitly.

Add refs/notes to the list of allowed paths so that notes references are
treated just like branch heads, i.e. according to core.logAllRefUpdates
and core.bare.

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Acked-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-29 21:18:07 -07:00
Junio C Hamano
a86ed83cce Merge branch 'tr/notes-display'
* tr/notes-display:
  git-notes(1): add a section about the meaning of history
  notes: track whether notes_trees were changed at all
  notes: add shorthand --ref to override GIT_NOTES_REF
  commit --amend: copy notes to the new commit
  rebase: support automatic notes copying
  notes: implement helpers needed for note copying during rewrite
  notes: implement 'git notes copy --stdin'
  rebase -i: invoke post-rewrite hook
  rebase: invoke post-rewrite hook
  commit --amend: invoke post-rewrite hook
  Documentation: document post-rewrite hook
  Support showing notes from more than one notes tree
  test-lib: unset GIT_NOTES_REF to stop it from influencing tests

Conflicts:
	git-am.sh
	refs.c
2010-03-24 16:26:43 -07:00
Junio C Hamano
954f7cfdac Merge branch 'jc/maint-refs-dangling'
* jc/maint-refs-dangling:
  refs: ref entry with NULL sha1 is can be a dangling symref
2010-03-24 16:25:34 -07:00
Junio C Hamano
e01de1c912 refs: ref entry with NULL sha1 is can be a dangling symref
Brandon Casey noticed that t5505 had accidentally broken its && chain,
hiding inconsistency between the code that writes the warning to the
standard output and the test that expects to see the warning on the
standard error, which was introduced by f8948e2 (remote prune: warn
dangling symrefs, 2009-02-08).

It turns out that the issue is deeper than that.  After f8948e2, a symref
that is dangling is marked with a NULL sha1, and the idea of using NULL
sha1 to mean a deleted ref was scrapped, but somehow a follow-up eafb452
(do_one_ref(): null_sha1 check is not about broken ref, 2009-07-22)
incorrectly reorganized do_one_ref(), still thinking NULL sha1 is never
used in the code.

Fix this by:

 - adopt Brandon's fix to t5505 test;

 - introduce REF_BROKEN flag to mark a ref that fails to resolve (dangling
   symref);

 - move the check for broken ref back inside the "if we are skipping
   dangling refs" code block.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-15 23:37:42 -07:00
René Scharfe
8ca7880356 for_each_recent_reflog_ent(): use strbuf, fix offset handling
As Vladimir reported, "git log -g refs/stash" surprisingly showed the reflog
of HEAD if the message in the reflog file was too long.  To fix this, convert
for_each_recent_reflog_ent() to use strbuf_getwholeline() instead of fgets(),
for safety and to avoid any size limits for reflog entries.

Also reverse the logic of the part of the function that only looks at file
tails.  It used to close the file if fgets() succeeded.  The following
fgets() call in the while loop was likely to fail in this case, too, so
passing an offset to for_each_recent_reflog_ent() never worked.  Change it to
error out if strbuf_getwholeline() fails instead.

Reported-by: Vladimir Panteleev <vladimir@thecybershadow.net>
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-13 13:18:09 -08:00
Thomas Rast
894a9d333e Support showing notes from more than one notes tree
With this patch, you can set notes.displayRef to a glob that points at
your favourite notes refs, e.g.,

[notes]
	displayRef = refs/notes/*

Then git-log and friends will show notes from all trees.

Thanks to Junio C Hamano for lots of feedback, which greatly
influenced the design of the entire series and this commit in
particular.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Acked-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-12 21:55:39 -08:00
Junio C Hamano
9517e6b843 Typofixes outside documentation area
begining -> beginning
    canonicalizations -> canonicalization
    comand -> command
    dewrapping -> unwrapping
    dirtyness -> dirtiness
    DISCLAMER -> DISCLAIMER
    explicitely -> explicitly
    feeded -> fed
    impiled -> implied
    madatory -> mandatory
    mimick -> mimic
    preceeding -> preceding
    reqeuest -> request
    substition -> substitution

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-03 21:28:17 -08:00
Ilari Liusvaara
b09fe971de rev-parse --branches/--tags/--remotes=pattern
Since local branch, tags and remote tracking branch namespaces are
most often used, add shortcut notations for globbing those in
manner similar to --glob option.

With this, one can express the "what I have but origin doesn't?"
as:

'git log --branches --not --remotes=origin'

Original-idea-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-20 12:30:25 -08:00
Ilari Liusvaara
d08bae7e22 rev-parse --glob
Add --glob=<glob-pattern> option to rev-parse and everything that
accepts its options. This option matches all refs that match given
shell glob pattern (complete with some DWIM logic).

Example:

'git log --branches --not --glob=remotes/origin'

To show what you have that origin doesn't.

Signed-off-by: Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-20 12:29:05 -08:00
Jay Soffian
3cf6134ad0 teach warn_dangling_symref to take a FILE argument
Different callers of warn_dangling_symref() may want to control whether its
output goes to stdout or stderr so let it take a FILE argument.

Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-11-10 01:01:47 -08:00
Miklos Vajna
1b018fd9be git branch -D: give a better error message when lockfile creation fails
Previously the old error message just told the user that it was not
possible to delete the ref from the packed-refs file. Give instructions
on how to resolve the problem.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2009-09-29 08:14:47 -07:00
Junio C Hamano
f00ecbe42b Merge branch 'cc/replace'
* cc/replace:
  t6050: check pushing something based on a replaced commit
  Documentation: add documentation for "git replace"
  Add git-replace to .gitignore
  builtin-replace: use "usage_msg_opt" to give better error messages
  parse-options: add new function "usage_msg_opt"
  builtin-replace: teach "git replace" to actually replace
  Add new "git replace" command
  environment: add global variable to disable replacement
  mktag: call "check_sha1_signature" with the replacement sha1
  replace_object: add a test case
  object: call "check_sha1_signature" with the replacement sha1
  sha1_file: add a "read_sha1_file_repl" function
  replace_object: add mechanism to replace objects found in "refs/replace/"
  refs: add a "for_each_replace_ref" function
2009-08-21 18:47:53 -07:00
Junio C Hamano
a0f4afbe87 clean: require double -f options to nuke nested git repository and work tree
When you have an embedded git work tree in your work tree (be it
an orphaned submodule, or an independent checkout of an unrelated
project), "git clean -d -f" blindly descended into it and removed
everything.  This is rarely what the user wants.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-29 12:22:30 -07:00
Junio C Hamano
f87dd2152a Merge branch 'maint'
* maint:
  SunOS grep does not understand -C<n> nor -e
  Fix export_marks() error handling.
  git branch: clean up detached branch handling
  git branch: avoid unnecessary object lookups
  git branch: fix performance problem
  do_one_ref(): null_sha1 check is not about broken ref

Conflicts:
	Makefile
2009-07-24 09:27:09 -07:00
Junio C Hamano
eafb45265b do_one_ref(): null_sha1 check is not about broken ref
f8948e2 (remote prune: warn dangling symrefs, 2009-02-08) introduced a
more dangerous variant of for_each_ref() family that skips the check for
dangling refs, but it also made another unrelated check optional by
mistake.

The check to see if a ref points at 0{40} is not about brokenness, but is
about a possible future plan to represent a deleted ref by writing 40 "0"
in a loose ref when there is a stale version of the same ref already in
.git/packed-refs, so that we can implement deletion of a ref without
having to rewrite the packed refs file excluding the ref being deleted.

This check has to live outside of the conditional.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-22 23:07:05 -07:00
Junio C Hamano
58b1ef2f0f Merge branch 'maint'
* maint:
  checkout -f: deal with a D/F conflict entry correctly
  sha1_name.c: avoid unnecessary strbuf_release
  refs.c: release file descriptor on error return
2009-07-18 16:57:47 -07:00
Brandon Casey
9d33f7c22f refs.c: release file descriptor on error return
Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-16 15:07:24 -07:00
Thomas Rast
d824cbba02 Convert existing die(..., strerror(errno)) to die_errno()
Change calls to die(..., strerror(errno)) to use the new die_errno().

In the process, also make slight style adjustments: at least state
_something_ about the function that failed (instead of just printing
the pathname), and put paths in single quotes.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-27 11:14:53 -07:00
Christian Couder
292687003a refs: add a "for_each_replace_ref" function
This is some preparation work for the following patches that are using
the "refs/replace/" ref namespace.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-31 17:02:59 -07:00
Junio C Hamano
23807fa008 Merge branch 'maint'
* maint:
  Prepare for 1.6.3.2
  fix cat-file usage message and documentation
  fetch: report ref storage DF errors more accurately
  lock_ref: inform callers of unavailable ref
  merge-options.txt: Clarify merge --squash

Conflicts:
	RelNotes
2009-05-25 19:44:52 -07:00
Junio C Hamano
2c5942dbae Merge branch 'ar/unlink-err' into maint
* ar/unlink-err:
  print unlink(2) errno in copy_or_link_directory
  replace direct calls to unlink(2) with unlink_or_warn
  Introduce an unlink(2) wrapper which gives warning if unlink failed
2009-05-25 19:01:50 -07:00
Jeff King
f475e08edb lock_ref: inform callers of unavailable ref
One of the ways that locking might fail is that there is a
DF conflict between two refs (e.g., you want to lock
"foo/bar" but "foo" already exists). In this case, we return
an error, but there is no way for the caller to know the
specific problem.

This patch sets errno to ENOTDIR, which is the most sensible
code. It's what we would see if the refs were stored purely
in the filesystem (but these days we must check the
namespace manually due to packed refs).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-25 12:06:54 -07:00
Junio C Hamano
44ee247f8d Merge branch 'fc/decorate-tag'
* fc/decorate-tag:
  Prettify log decorations even more
  Change prettify_ref to prettify_refname
2009-05-23 01:43:50 -07:00
Junio C Hamano
e05aae684d Merge branch 'rr/forbid-bs-in-ref'
* rr/forbid-bs-in-ref:
  Disallow '\' in ref names
2009-05-23 01:39:45 -07:00
Felipe Contreras
4577e48364 Change prettify_ref to prettify_refname
In preparation to be used when the ref object is not available

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-13 20:55:48 -07:00
Robin Rosenberg
a4c2e69936 Disallow '\' in ref names
This is asking for trouble since '\' is a directory separator in
Windows and thus may produce unpredictable results.

Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-09 01:35:49 -07:00
Alex Riesen
691f1a28bf replace direct calls to unlink(2) with unlink_or_warn
This helps to notice when something's going wrong, especially on
systems which lock open files.

I used the following criteria when selecting the code for replacement:
- it was already printing a warning for the unlink failures
- it is in a function which already printing something or is
  called from such a function
- it is in a static function, returning void and the function is only
  called from a builtin main function (cmd_)
- it is in a function which handles emergency exit (signal handlers)
- it is in a function which is obvously cleaning up the lockfiles

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-29 18:37:41 -07:00
Bert Wesarg
6e7b3309d3 shorten_unambiguous_ref(): add strict mode
Add the strict mode of abbreviation to shorten_unambiguous_ref(), i.e. the
resulting ref won't trigger the ambiguous ref warning.

All users of shorten_unambiguous_ref() still use the loose mode.

Signed-off-by: Bert Wesarg <bert.wesarg@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-13 09:36:44 -07:00
Junio C Hamano
3e52effcf6 Merge branch 'jk/show-upstream'
* jk/show-upstream:
  branch: show upstream branch when double verbose
  make get_short_ref a public function
  for-each-ref: add "upstream" format field
  for-each-ref: refactor refname handling
  for-each-ref: refactor get_short_ref function
2009-04-12 16:46:42 -07:00
Junio C Hamano
6e353a5e5d Merge branch 'cc/bisect-filter'
* cc/bisect-filter: (21 commits)
  rev-list: add "int bisect_show_flags" in "struct rev_list_info"
  rev-list: remove last static vars used in "show_commit"
  list-objects: add "void *data" parameter to show functions
  bisect--helper: string output variables together with "&&"
  rev-list: pass "int flags" as last argument of "show_bisect_vars"
  t6030: test bisecting with paths
  bisect: use "bisect--helper" and remove "filter_skipped" function
  bisect: implement "read_bisect_paths" to read paths in "$GIT_DIR/BISECT_NAMES"
  bisect--helper: implement "git bisect--helper"
  bisect: use the new generic "sha1_pos" function to lookup sha1
  rev-list: call new "filter_skip" function
  patch-ids: use the new generic "sha1_pos" function to lookup sha1
  sha1-lookup: add new "sha1_pos" function to efficiently lookup sha1
  rev-list: pass "revs" to "show_bisect_vars"
  rev-list: make "show_bisect_vars" non static
  rev-list: move code to show bisect vars into its own function
  rev-list: move bisect related code into its own file
  rev-list: make "bisect_list" variable local to "cmd_rev_list"
  refs: add "for_each_ref_in" function to refactor "for_each_*_ref" functions
  quote: add "sq_dequote_to_argv" to put unwrapped args in an argv array
  ...
2009-04-12 16:46:40 -07:00
Jeff King
7c2b3029df make get_short_ref a public function
Often we want to shorten a full ref name to something "prettier"
to show a user. For example, "refs/heads/master" is often shown
simply as "master", or "refs/remotes/origin/master" is shown as
"origin/master".

Many places in the code use a very simple formula: skip common
prefixes like refs/heads, refs/remotes, etc. This is codified in
the prettify_ref function.

for-each-ref has a more correct (but more expensive) approach:
consider the ref lookup rules, and try shortening as much as
possible while remaining unambiguous.

This patch makes the latter strategy globally available as
shorten_unambiguous_ref.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-07 23:22:15 -07:00
Junio C Hamano
fbdc05661d Merge branch 'jc/name-branch'
* jc/name-branch:
  Don't permit ref/branch names to end with ".lock"
  check_ref_format(): tighten refname rules
  strbuf_check_branch_ref(): a helper to check a refname for a branch
  Fix branch -m @{-1} newname
  check-ref-format --branch: give Porcelain a way to grok branch shorthand
  strbuf_branchname(): a wrapper for branch name shorthands
  Rename interpret/substitute nth_last_branch functions

Conflicts:
	Documentation/git-check-ref-format.txt
2009-04-06 00:43:44 -07:00
Junio C Hamano
5aaa507b06 Merge branch 'cc/sha1-bsearch' into HEAD
* cc/sha1-bsearch: (95 commits)
  patch-ids: use the new generic "sha1_pos" function to lookup sha1
  sha1-lookup: add new "sha1_pos" function to efficiently lookup sha1
  Update draft release notes to 1.6.3
  GIT 1.6.2.2
  send-email: ensure quoted addresses are rfc2047 encoded
  send-email: correct two tests which were going interactive
  Documentation: git-svn: fix trunk/fetch svn-remote key typo
  Mailmap: Allow empty email addresses to be mapped
  Cleanup warning about known issues in cvsimport documentation
  Documentation: Remove an odd "instead"
  send-email: ask_default should apply to all emails, not just the first
  send-email: don't attempt to prompt if tty is closed
  fix portability problem with IS_RUN_COMMAND_ERR
  Documentation: use "spurious .sp" XSLT if DOCBOOK_SUPPRESS_SP is set
  mailmap: resurrect lower-casing of email addresses
  builtin-clone.c: no need to strdup for setenv
  builtin-clone.c: make junk_pid static
  git-svn: add a double quiet option to hide git commits
  Update draft release notes to 1.6.2.2
  Documentation: push.default applies to all remotes
  ...
2009-04-04 23:04:50 -07:00
Christian Couder
2a8177b63d refs: add "for_each_ref_in" function to refactor "for_each_*_ref" functions
The "for_each_{tag,branch,remote,replace,}_ref" functions are
redefined in terms of "for_each_ref_in" so that we can lose the
hardcoded length of prefix strings from the code.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
2009-03-30 01:22:53 -07:00
Junio C Hamano
f23336f5c1 Merge branch 'db/push-cleanup'
* db/push-cleanup:
  Move push matching and reporting logic into transport.c
  Use a common function to get the pretty name of refs

Conflicts:
	transport.c
2009-03-26 00:28:46 -07:00
Shawn O. Pearce
3e262b95c5 Don't permit ref/branch names to end with ".lock"
We already skip over loose refs under $GIT_DIR/refs if the name
ends with ".lock", so creating a branch named "foo.lock" will not
appear in the output of "git branch", "git for-each-ref", nor will
its commit be considered reachable by "git rev-list --all".

In the latter case this is especially evil, as it may cause
repository corruption when objects reachable only through such a
ref are deleted by "git prune".

It should be reasonably safe to deny use of ".lock" as a ref suffix.
In prior versions of Git such branches would be "phantom branches";
you can create it, but you can't see it in "git branch" output.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-24 17:02:20 -07:00
Junio C Hamano
cbdffe4093 check_ref_format(): tighten refname rules
This changes the rules for refnames to forbid:

 (1) a refname that contains "@{" in it.

     Some people and foreign SCM converter may have named their branches
     as frotz@24 and we still want to keep supporting it.

     However, "git branch frotz@{24}" is a disaster.  It cannot even
     checked out because "git checkout frotz@{24}" will interpret it as
     "detach the HEAD at twenty-fourth reflog entry of the frotz branch".

 (2) a refname that ends with a dot.

     We already reject a path component that begins with a dot, primarily
     to avoid ambiguous range interpretation.  If we allowed ".B" as a
     valid ref, it is unclear if "A...B" means "in dot-B but not in A" or
     "either in A or B but not in both".

     But for this to be complete, we need also to forbid "A." to avoid "in
     B but not in A-dot".  This was not a problem in the original range
     notation, but we should have added this restriction when three-dot
     notation was introduced.

     Unlike "no dot at the beginning of any path component" rule, this
     rule does not have to be "no dot at the end of any path component",
     because you cannot abbreviate the tail end away, similar to you can
     say "dot-B" to mean "refs/heads/dot-B".

For these reasons, it is not likely people created branches with these
names on purpose, but we have allowed such names to be used for quite some
time, and it is possible that people created such branches by mistake or
by accident.

To help people with branches with such unfortunate names to recover,
we still allow "branch -d 'bad.'" to delete such branches, and also allow
"branch -m bad. good" to rename them.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-24 00:53:03 -07:00
Miklos Vajna
edbc25c5b3 refs: use warning() instead of fprintf(stderr, "warning: ")
Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-23 21:02:28 -07:00
Daniel Barkalow
a9c37a72c4 Use a common function to get the pretty name of refs
The result should be consistent between fetch and push, so we ought to
use the same code in both cases, even though it's short.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-09 15:41:16 -07:00
Junio C Hamano
5ad6b0252b Adjust js/remote-improvements and db/refspec-wildcard-in-the-middle
The latter topic changes the definition of how refspec's src and dst side
is stored in-core; it used to be that the asterisk for pattern was
omitted, but now it is included.  The former topic handcrafts an old style
refspec to feed the refspec matching machinery that lacks the asterisk and
triggers an error.

This resolves the semantic clash between the two topics early before they
need to be merged to integration branches.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-08 00:24:21 -08:00
Daniel Barkalow
abd2bde78b Support '*' in the middle of a refspec
In order to keep the requirements strict, each * has to be a full path
component, and there may only be one * per side. This requirement is
enforced entirely by check_ref_format(); the matching implementation
will substitute the whatever matches the * in the lhs for the * in the
rhs.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-07 12:19:28 -08:00
Daniel Barkalow
08fbdb3043 Keep '*' in pattern refspecs
In order to do anything more capable with refspecs, the first step is
to keep the entire input. Additionally, validate patterns by checking
for the ref matching the rules for a pattern as given by
check_ref_format(). This requires a slight change to
check_ref_format() to make it enforce the requirement that the '*'
immediately follow a '/'.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-07 12:19:24 -08:00
Jeff King
5483f79998 refactor find_ref_by_name() to accept const list
Since it doesn't actually touch its argument, this makes
sense.

However, we still want to return a non-const version (which
requires a cast) so that this:

  struct ref *a, *b;
  a = find_ref_by_name(b);

works. Unfortunately, you can also silently strip the const
from a variable:

  struct ref *a;
  const struct ref *b;
  a = find_ref_by_name(b);

This is a classic C const problem because there is no way to
say "return the type with the same constness that was passed
to us"; we provide the same semantics as standard library
functions like strchr.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-26 00:49:44 -08:00
Junio C Hamano
f8948e2fbc remote prune: warn dangling symrefs
If you prune from the remote "frotz" that deleted the ref your tracking
branch remotes/frotz/HEAD points at, the symbolic ref will become
dangling.  We used to detect this as an error condition and issued a
message every time refs are enumerated.

This stops the error message, but moves the warning to "remote prune".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-10 22:26:20 -08:00
Junio C Hamano
101d15e097 Introduce for_each_recent_reflog_ent().
This can be used to scan only the last few kilobytes of a reflog, as a
cheap optimization when the data you are looking for is likely to be
found near the end of it.  The caller is expected to fall back to the
full scan if that is not the case.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-19 22:18:29 -08:00
Junio C Hamano
8bb4646dae Merge branch 'maint'
* maint:
  Fix non-literal format in printf-style calls
  git-submodule: Avoid printing a spurious message.
  git ls-remote: make usage string match manpage
  Makefile: help people who run 'make check' by mistake
2008-11-11 14:49:50 -08:00
Daniel Lowe
9db56f71b9 Fix non-literal format in printf-style calls
These were found using gcc 4.3.2-1ubuntu11 with the warning:

    warning: format not a string literal and no format arguments

Incorporated suggestions from Brandon Casey <casey@nrlssc.navy.mil>.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-11 14:43:59 -08:00
Junio C Hamano
bc9c0248a5 Merge branch 'maint'
* maint:
  GIT 1.6.0.4
  Update RPM spec for the new location of git-cvsserver.
  push: fix local refs update if already up-to-date
  do not force write of packed refs

Conflicts:
	builtin-revert.c
2008-11-08 21:33:55 -08:00
Junio C Hamano
832e719d79 Merge branch 'cb/maint-update-ref-fix' into maint
* cb/maint-update-ref-fix:
  push: fix local refs update if already up-to-date
  do not force write of packed refs
2008-11-08 17:32:49 -08:00
Junio C Hamano
8b1981d32b Merge branch 'ar/maint-mksnpath' into maint
* ar/maint-mksnpath:
  Use git_pathdup instead of xstrdup(git_path(...))
  git_pathdup: returns xstrdup-ed copy of the formatted path
  Fix potentially dangerous use of git_path in ref.c
  Add git_snpath: a .git path formatting routine with output buffer
  Fix potentially dangerous uses of mkpath and git_path
  Fix mkpath abuse in dwim_ref and dwim_log of sha1_name.c
  Add mksnpath which allows you to specify the output buffer

Conflicts:
	builtin-revert.c
	rerere.c
2008-11-08 16:13:19 -08:00
Junio C Hamano
3b8572a429 Merge branch 'mv/maint-branch-m-symref' into maint
* mv/maint-branch-m-symref:
  update-ref --no-deref -d: handle the case when the pointed ref is packed
  git branch -m: forbid renaming of a symref
  Fix git update-ref --no-deref -d.
  rename_ref(): handle the case when the reflog of a ref does not exist
  Fix git branch -m for symrefs.
2008-11-08 16:07:37 -08:00
Clemens Buchacher
5bdd8d4a30 do not force write of packed refs
We force writing a ref if it does not exist. Originally, we only had to look
for the ref file to check if it existed. Now we have to look for a packed ref
as well. Luckily, resolve_ref already does all the work for us.

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-05 14:09:43 -08:00
Junio C Hamano
a1a846a19e Merge branch 'ar/mksnpath'
* ar/mksnpath:
  Use git_pathdup instead of xstrdup(git_path(...))
  git_pathdup: returns xstrdup-ed copy of the formatted path
  Fix potentially dangerous use of git_path in ref.c
  Add git_snpath: a .git path formatting routine with output buffer
  Fix potentially dangerous uses of mkpath and git_path
  Fix potentially dangerous uses of mkpath and git_path
  Fix mkpath abuse in dwim_ref and dwim_log of sha1_name.c
  Add mksnpath which allows you to specify the output buffer

Conflicts:
	builtin-revert.c
2008-11-05 11:35:53 -08:00
Junio C Hamano
efcce2e1f0 Merge branch 'mv/maint-branch-m-symref'
* mv/maint-branch-m-symref:
  update-ref --no-deref -d: handle the case when the pointed ref is packed
  git branch -m: forbid renaming of a symref
  Fix git update-ref --no-deref -d.
  rename_ref(): handle the case when the reflog of a ref does not exist
  Fix git branch -m for symrefs.
2008-11-05 11:33:19 -08:00
Miklos Vajna
045a476f91 update-ref --no-deref -d: handle the case when the pointed ref is packed
In this case we did nothing in the past, but we should delete the
reference in fact.

The problem was that when the symref is not packed but the referenced
ref is packed, then we assumed that the symref is packed as well, but
symrefs are never packed.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-31 22:41:55 -07:00
Junio C Hamano
98b35e2c74 Merge branch 'ar/maint-mksnpath' into ar/mksnpath
* ar/maint-mksnpath:
  Use git_pathdup instead of xstrdup(git_path(...))
  git_pathdup: returns xstrdup-ed copy of the formatted path
  Fix potentially dangerous use of git_path in ref.c
  Add git_snpath: a .git path formatting routine with output buffer

Conflicts:
	builtin-revert.c
	refs.c
	rerere.c
2008-10-30 18:08:58 -07:00
Alex Riesen
a4f34cbb4c Use git_pathdup instead of xstrdup(git_path(...))
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-30 17:52:24 -07:00
Alex Riesen
958a4789e0 Fix potentially dangerous use of git_path in ref.c
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-30 17:18:29 -07:00
Miklos Vajna
fa58186c9b git branch -m: forbid renaming of a symref
There may be cases where one would really want to rename the symbolic
ref without changing its value, but "git branch -m" is not such a
use-case.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-30 13:50:48 -07:00
Miklos Vajna
450d4c0f5a rename_ref(): handle the case when the reflog of a ref does not exist
We tried to check if a reflog of a ref is a symlink without first
checking if it exists, which is a bug.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-26 14:43:26 -07:00
Miklos Vajna
eca35a25a9 Fix git branch -m for symrefs.
This had two problems with symrefs. First, it copied the actual sha1
instead of the "pointer", second it failed to remove the old ref after a
successful rename.

Given that till now delete_ref() always dereferenced symrefs, a new
parameters has been introduced to delete_ref() to allow deleting refs
without a dereference.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-26 14:42:57 -07:00
Junio C Hamano
a157400c97 Merge branch 'jc/maint-co-track'
* jc/maint-co-track:
  Enhance hold_lock_file_for_{update,append}() API
  demonstrate breakage of detached checkout with symbolic link HEAD
  Fix "checkout --track -b newbranch" on detached HEAD

Conflicts:
	builtin-commit.c
2008-10-21 17:58:11 -07:00
Junio C Hamano
acd3b9eca8 Enhance hold_lock_file_for_{update,append}() API
This changes the "die_on_error" boolean parameter to a mere "flags", and
changes the existing callers of hold_lock_file_for_update/append()
functions to pass LOCK_DIE_ON_ERROR.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-19 12:35:37 -07:00
Christian Couder
4886b89f8f refs: improve comments about "reading" argument of "resolve_ref"
The existing in-code comment was misleading.  An access that is not
"reading" may often be "writing", but it does not have to be.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-09 08:34:00 -07:00
Junio C Hamano
bb293b831b Merge branch 'maint'
* maint:
  Start preparing release notes for 1.5.6.3
  git-submodule - Fix bugs in adding an existing repo as a module
  bash: offer only paths after '--'
  Remove unnecessary pack-*.keep file after successful git-clone
  make deleting a missing ref more quiet
2008-07-09 00:19:50 -07:00
Jeff King
d1a4489a56 avoid null SHA1 in oldest reflog
When the user specifies a ref by a reflog entry older than
one we have (e.g., "HEAD@{20 years ago"}), we issue a
warning and give them the "from" value of the oldest reflog
entry. That is, we say "we don't know what happened before
this entry, but before this we know we had some particular
SHA1".

However, the oldest reflog entry is often a creation event
such as clone or branch creation. In this case, the entry
claims that the ref went from "00000..." (the null sha1) to
the new value, and the reflog lookup returns the null sha1.

While this is technically correct (the entry tells us that
the ref didn't exist at the specified time) it is not
terribly useful to the end user. What they probably want
instead is "the oldest useful sha1 that this ref ever had".
This patch changes the behavior such that if the oldest ref
would return the null sha1, it instead returns the first
value the ref ever had.

We never discovered this problem in the test scripts because
we created "fake" reflogs that had only a specified segment
of history. This patch updates the tests with a creation
event at the beginning of history.

Signed-off-by: Jeff King <peff@peff.net>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-08 13:57:27 -07:00
Jeff King
0b294c0abf make deleting a missing ref more quiet
If git attempts to delete a ref, but the unlink of the ref
file fails, we print a message to stderr. This is usually a
good thing, but if the error is ENOENT, then it indicates
that the ref has _already_ been deleted. And since that's
our goal, it doesn't make sense to complain to the user.

This harmonizes the error reporting behavior for the
unpacked and packed cases; the packed case already printed
nothing on ENOENT, but the unpacked printed unconditionally.

Additionally, send-pack would, when deleting the tracking
ref corresponding to a remote delete, print "Failed to
delete" on any failure. This can be a misleading
message, since we actually _did_ delete at the remote side,
but we failed to delete locally. Rather than make the
message more precise, let's just eliminate it entirely; the
delete_ref routine already takes care of printing out a much
more specific message about what went wrong.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-08 13:05:11 -07:00
Junio C Hamano
b84c343c88 Merge branch 'db/clone-in-c'
* db/clone-in-c:
  Add test for cloning with "--reference" repo being a subset of source repo
  Add a test for another combination of --reference
  Test that --reference actually suppresses fetching referenced objects
  clone: fall back to copying if hardlinking fails
  builtin-clone.c: Need to closedir() in copy_or_link_directory()
  builtin-clone: fix initial checkout
  Build in clone
  Provide API access to init_db()
  Add a function to set a non-default work tree
  Allow for having for_each_ref() list extra refs
  Have a constant extern refspec for "--tags"
  Add a library function to add an alternate to the alternates file
  Add a lockfile function to append to a file
  Mark the list of refs to fetch as const

Conflicts:

	cache.h
	t/t5700-clone-reference.sh
2008-05-25 13:41:37 -07:00
Junio C Hamano
e2e2defc14 Merge branch 'lh/git-file'
* lh/git-file:
  Teach GIT-VERSION-GEN about the .git file
  Teach git-submodule.sh about the .git file
  Teach resolve_gitlink_ref() about the .git file
  Add platform-independent .git "symlink"
2008-05-05 19:16:16 -07:00
Daniel Barkalow
e142a3c61d Allow for having for_each_ref() list extra refs
These refs can be anything, but they are most likely useful as
pointing to objects that you know are in the object database but don't
have any regular refs for. For example, when cloning with --reference,
the refs in this repository should be listed as objects that we have,
even though we don't have refs in our newly-created repository for
them yet.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-04 17:41:44 -07:00
Heikki Orsila
0104ca09e3 Make read_in_full() and write_in_full() consistent with xread() and xwrite()
xread() and xwrite() return ssize_t values as their native POSIX
counterparts read(2) and write(2).

To be consistent, read_in_full() and write_in_full() should also return
ssize_t values.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-29 23:11:57 -07:00
Lars Hjemli
842abf06f3 Teach resolve_gitlink_ref() about the .git file
When .git in a submodule is a file, resolve_gitlink_ref() needs to pick up
the real GIT_DIR of the submodule from that file.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-09 01:22:50 -07:00
Junio C Hamano
f830d45b9f Merge commit '74359821' into js/reflog-delete
* commit '74359821': (128 commits)
  tests: introduce test_must_fail
  Fix builtin checkout crashing when given an invalid path
  templates/Makefile: don't depend on local umask setting
  Correct name of diff_flush() in API documentation
  Start preparing for 1.5.4.4
  format-patch: remove a leftover debugging message
  completion: support format-patch's --cover-letter option
  Eliminate confusing "won't bisect on seeked tree" failure
  builtin-reflog.c: don't install new reflog on write failure
  send-email: fix In-Reply-To regression
  git-svn: Don't prompt for client cert password everytime.
  git.el: Do not display empty directories.
  Fix 'git cvsexportcommit -w $cvsdir ...' when used with relative $GIT_DIR
  Add testcase for 'git cvsexportcommit -w $cvsdir ...' with relative $GIT_DIR
  Prompt to continue when editing during rebase --interactive
  Documentation/git svn log: add a note about timezones.
  git-p4: Support usage of perforce client spec
  git-p4: git-p4 submit cleanups.
  git-p4: Removed git-p4 submit --direct.
  git-p4: Clean up git-p4 submit's log message handling.
  ...
2008-03-03 01:20:19 -08:00
Shawn O. Pearce
0ae91be0e1 Optimize peel_ref for the current ref of a for_each_ref callback
Currently the only caller of peel_ref is show-ref, which is using
this function to show the peeled tag information if it is available
from an existing packed-refs file.  The call happens during the
for_each_ref callback function, so we have the proper struct ref_list
already on the call stack but it is not easily available to return
the peeled information to the caller.

We now save the current struct ref_list item before calling back
into the callback function so that future calls to peel_ref from
within the callback function can quickly access the current ref.
Doing so will save us an lstat() per ref processed as we no longer
have to check the filesystem to see if the ref exists as a loose
file or is packed.  This current ref caching also saves a linear
scan of the cached packed refs list.

As a micro-optimization we test the address of the passed ref name
against the current_ref->name before we go into the much more costly
strcmp().  Nearly any caller of peel_ref will be passing us the same
string do_for_each_ref passed them, which is current_ref->name.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-24 10:01:24 -08:00
Shawn O. Pearce
8c87dc77ae Protect peel_ref fallback case from NULL parse_object result
If the SHA-1 we are requesting the object for does not exist in
the object database we get a NULL back.  Accessing the type from
that is not likely to succeed on any system.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-24 00:52:55 -08:00
Brandon Casey
435fc8523f refs.c: make close_ref() and commit_ref() non-static
This is in preparation to the reflog-expire changes which will
allow updating the ref after expiring the reflog.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-22 22:57:38 -08:00
Brandon Casey
b531394d58 refs.c: rework ref_locks by abstracting from underlying struct lock_file
Instead of calling close_lock_file() and commit_lock_file() directly,
which take a struct lock_file argument, add two new functions:
close_ref() and commit_ref(), which handle calling the previous
lock_file functions and modifying the ref_lock structure.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-16 15:36:10 -08:00
Brandon Casey
4ed7cd3ab0 Improve use of lockfile API
Remove remaining double close(2)'s.  i.e. close() before
commit_locked_index() or commit_lock_file().

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-16 15:35:35 -08:00
Linus Torvalds
c3b0dec509 Be more careful about updating refs
This makes write_ref_sha1() more careful: it actually checks the SHA1 of
the ref it is updating, and refuses to update a ref with an object that it
cannot find.

Perhaps more importantly, it also refuses to update a branch head with a
non-commit object. I don't quite know *how* the stable series maintainers
were able to corrupt their repository to have a HEAD that pointed to a tag
rather than a commit object, but they did. Which results in a totally
broken repository that cannot be cloned or committed on.

So make it harder for people to shoot themselves in the foot like that.

The test t1400-update-ref.sh is fixed at the same time, as it
assumed that the commands involved in the particular test would
not care about corrupted repositories whose refs point at
nonexistant bogus objects.  That assumption does not hold true
anymore.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-16 11:53:35 -08:00
Junio C Hamano
257f3020f6 Update callers of check_ref_format()
This updates send-pack and fast-import to use symbolic constants
for checking the return values from check_ref_format(), and also
futureproof the logic in lock_any_ref_for_update() to explicitly
name the case that is usually considered an error but is Ok for
this particular use.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-02 11:20:09 -08:00
Junio C Hamano
5f7b202a7f lock_any_ref_for_update(): reject wildcard return from check_ref_format
Recent check_ref_format() returns -3 as well as -1 (general
error) and -2 (less than two levels).  The caller was explicitly
checking for -1, to allow "HEAD" but still needed to disallow
bogus refs.

This introduces symbolic constants for the return values from
check_ref_format() to make them read better and more
meaningful.  Normal ref creation codepath can still treat
non-zero return values as errors.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-02 02:28:54 -08:00
Junio C Hamano
774751a8bc Re-fix "builtin-commit: fix --signoff"
An earlier fix to the said commit was incomplete; it mixed up the
meaning of the flag parameter passed to the internal fmt_ident()
function, so this corrects it.

git_author_info() and git_committer_info() can be told to issue a
warning when no usable user information is found, and optionally can be
told to error out.  Operations that actually use the information to
record a new commit or a tag will still error out, but the caller to
leave reflog record will just silently use bogus user information.

Not warning on misconfigured user information while writing a reflog
entry is somewhat debatable, but it is probably nicer to the users to
silently let it pass, because the only information you are losing is who
checked out the branch.

 * git_author_info() and git_committer_info() used to take 1 (positive
   int) to error out with a warning on misconfiguration; this is now
   signalled with a symbolic constant IDENT_ERROR_ON_NO_NAME.

 * These functions used to take -1 (negative int) to warn but continue;
   this is now signalled with a symbolic constant IDENT_WARN_ON_NO_NAME.

 * fmt_ident() function implements the above error reporting behaviour
   common to git_author_info() and git_committer_info().  A symbolic
   constant IDENT_NO_DATE can be or'ed in to the flag parameter to make
   it return only the "Name <email@address.xz>".

 * fmt_name() is a thin wrapper around fmt_ident() that always passes
   IDENT_ERROR_ON_NO_NAME and IDENT_NO_DATE.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-09 00:55:55 -08:00
Junio C Hamano
9bbe6db85f Merge branch 'sp/refspec-match'
* sp/refspec-match:
  refactor fetch's ref matching to use refname_match()
  push: use same rules as git-rev-parse to resolve refspecs
  add refname_match()
  push: support pushing HEAD to real branch name
2007-12-04 17:07:10 -08:00
Junio C Hamano
fd200790dc Merge branch 'jk/send-pack'
* jk/send-pack: (24 commits)
  send-pack: cluster ref status reporting
  send-pack: fix "everything up-to-date" message
  send-pack: tighten remote error reporting
  make "find_ref_by_name" a public function
  Fix warning about bitfield in struct ref
  send-pack: assign remote errors to each ref
  send-pack: check ref->status before updating tracking refs
  send-pack: track errors for each ref
  git-push: add documentation for the newly added --mirror mode
  Add tests for git push'es mirror mode
  Update the tracking references only if they were succesfully updated on remote
  Add a test checking if send-pack updated local tracking branches correctly
  git-push: plumb in --mirror mode
  Teach send-pack a mirror mode
  send-pack: segfault fix on forced push
  Reteach builtin-ls-remote to understand remotes
  send-pack: require --verbose to show update of tracking refs
  receive-pack: don't mention successful updates
  more terse push output
  Build in ls-remote
  ...
2007-11-24 16:45:37 -08:00
Steffen Prohaska
605b4978a1 refactor fetch's ref matching to use refname_match()
The old rules used by fetch were coded as a series of ifs.  The old
rules are:
1) match full refname if it starts with "refs/" or matches "HEAD"
2) verify that full refname starts with "refs/"
3) match abbreviated name in "refs/" if it starts with "heads/",
    "tags/", or "remotes/".
4) match abbreviated name in "refs/heads/"

This is replaced by the new rules
a) match full refname
b) match abbreviated name prefixed with "refs/"
c) match abbreviated name prefixed with "refs/heads/"

The details of the new rules are different from the old rules.  We no
longer verify that the full refname starts with "refs/".  The new rule
(a) matches any full string.  The old rules (1) and (2) were stricter.
Now, the caller is responsible for using sensible full refnames.  This
should be the case for the current code.  The new rule (b) is less
strict than old rule (3).  The new rule accepts abbreviated names that
start with a non-standard prefix below "refs/".

Despite this modifications the new rules should handle all cases as
expected.  Two tests are added to verify that fetch does not resolve
short tags or HEAD in remotes.

We may even think about loosening the rules a bit more and unify them
with the rev-parse rules.  This would be done by replacing
ref_ref_fetch_rules with ref_ref_parse_rules.  Note, the two new test
would break.

Signed-off-by: Steffen Prohaska <prohaska@zib.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-18 18:39:01 -08:00
Steffen Prohaska
79803322c1 add refname_match()
We use at least two rulesets for matching abbreviated refnames with
full refnames (starting with 'refs/').  git-rev-parse and git-fetch
use slightly different rules.

This commit introduces a new function refname_match
(const char *abbrev_name, const char *full_name, const char **rules).

abbrev_name is expanded using the rules and matched against full_name.
If a match is found the function returns true.  rules is a NULL-terminate
list of format patterns with "%.*s", for example:

    const char *ref_rev_parse_rules[] = {
               "%.*s",
               "refs/%.*s",
               "refs/tags/%.*s",
               "refs/heads/%.*s",
               "refs/remotes/%.*s",
               "refs/remotes/%.*s/HEAD",
               NULL
    };

Asterisks are included in the format strings because this is the form
required in sha1_name.c.  Sharing the list with the functions there is
a good idea to avoid duplicating the rules.  Hopefully this
facilitates unified matching rules in the future.

This commit makes the rules used by rev-parse for resolving refs to
sha1s available for string comparison.  Before this change, the rules
were buried in get_sha1*() and dwim_ref().

A follow-up commit will refactor the rules used by fetch.

refname_match() will be used for matching refspecs in git-send-pack.

Thanks to Daniel Barkalow <barkalow@iabervon.org> for pointing
out that ref_matches_abbrev in remote.c solves a similar problem
and care should be taken to avoid confusion.

Signed-off-by: Steffen Prohaska <prohaska@zib.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-18 18:39:00 -08:00
Jeff King
cda69f481d make "find_ref_by_name" a public function
This was a static in remote.c, but is generally useful.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-18 02:34:34 -08:00
Johannes Sixt
549799b4a1 refs.c: Remove unused get_ref_sha1()
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-15 21:16:51 -08:00
Shawn O. Pearce
2e13e5d892 Merge branch 'master' into db/fetch-pack
There's a number of tricky conflicts between master and
this topic right now due to the rewrite of builtin-push.
Junio must have handled these via rerere; I'd rather not
deal with them again so I'm pre-merging master into the
topic.  Besides this topic somehow started to depend on
the strbuf series that was in next, but is now in master.
It no longer compiles on its own without the strbuf API.

* master: (184 commits)
  Whip post 1.5.3.4 maintenance series into shape.
  Minor usage update in setgitperms.perl
  manual: use 'URL' instead of 'url'.
  manual: add some markup.
  manual: Fix example finding commits referencing given content.
  Fix wording in push definition.
  Fix some typos, punctuation, missing words, minor markup.
  manual: Fix or remove em dashes.
  Add a --dry-run option to git-push.
  Add a --dry-run option to git-send-pack.
  Fix in-place editing functions in convert.c
  instaweb: support for Ruby's WEBrick server
  instaweb: allow for use of auto-generated scripts
  Add 'git-p4 commit' as an alias for 'git-p4 submit'
  hg-to-git speedup through selectable repack intervals
  git-svn: respect Subversion's [auth] section configuration values
  gtksourceview2 support for gitview
  fix contrib/hooks/post-receive-email hooks.recipients error message
  Support cvs via git-shell
  rebase -i: use diff plumbing instead of porcelain
  ...

Conflicts:

	Makefile
	builtin-push.c
	rsh.c
2007-10-16 00:15:25 -04:00
Johannes Schindelin
7155b727c9 Introduce remove_dir_recursively()
There was a function called remove_empty_dir_recursive() buried
in refs.c.  Expose a slightly enhanced version in dir.h: it can now
optionally remove a non-empty directory.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-30 00:04:39 -07:00
Pierre Habouzit
182af8343c Use xmemdupz() in many places.
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-18 17:42:17 -07:00
Carlos Rica
3d9f037c60 Function for updating refs.
A function intended to be called from builtins updating refs
by locking them before write, specially those that came from
scripts using "git update-ref".

[jc: with minor fixups]

Signed-off-by: Carlos Rica <jasampler@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-05 11:29:33 -07:00
Alex Riesen
cbbb218f8b Fix filehandle leak in "git branch -D"
On Windows (it can't touch open files in any way) the following fails:

    git branch -D branch1 branch2

if the both branches are in packed-refs.

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-08-10 22:50:06 -07:00
Junio C Hamano
0ec29a4760 log_ref_write() -- do not chomp reflog message at the first LF
A reflog file is organized as one-line-per-entry records, and we
enforced the file format integrity by chomping the given message
at the first LF.  This changes it to convert them to SP, which
is more in line with the --pretty=oneline format.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-07-29 23:28:55 -07:00
Junio C Hamano
73013afd14 Make show_rfc2822_date() just another date output format.
These days, show_date() takes a date_mode parameter to specify
the output format, and a separate specialized function for dates
in E-mails does not make much sense anymore.

This retires show_rfc2822_date() function and make it just
another date output format.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-07-13 23:14:52 -07:00
Jim Meyering
91c8d5905c detect close failure on just-written file handles
I audited git for potential undetected write failures.
In the cases fixed below, the diagnostics I add mimic the diagnostics
used in surrounding code, even when that means not reporting
the precise strerror(errno) cause of the error.

Signed-off-by: Jim Meyering <jim@meyering.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-06-26 21:48:53 -07:00
Junio C Hamano
4175e9e3a8 More static
There still are quite a few symbols that ought to be static.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-06-13 02:02:10 -07:00
Daniel Barkalow
8558fd9ece Move refspec pattern matching to match_refs().
This means that send-pack and http-push will support pattern refspecs,
so builtin-push.c doesn't have to expand them, and also git push can
just turn --tags into "refs/tags/*", further simplifying
builtin-push.c

check_ref_format() gets a third "conditionally okay" result for
something that's valid as a pattern but not as a particular ref.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-05-26 01:20:10 -07:00
Sven Verdoolaege
68db31cc28 git-update-ref: add --no-deref option for overwriting/detaching ref
git-checkout is also adapted to make use of this new option
instead of the handcrafted command sequence.

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-05-10 15:24:44 -07:00
Junio C Hamano
afb5b6a24b Merge branch 'lt/gitlink'
* lt/gitlink:
  Tests for core subproject support
  Expose subprojects as special files to "git diff" machinery
  Fix some "git ls-files -o" fallout from gitlinks
  Teach "git-read-tree -u" to check out submodules as a directory
  Teach git list-objects logic to not follow gitlinks
  Fix gitlink index entry filesystem matching
  Teach "git-read-tree -u" to check out submodules as a directory
  Teach git list-objects logic not to follow gitlinks
  Don't show gitlink directories when we want "other" files
  Teach git-update-index about gitlinks
  Teach directory traversal about subprojects
  Fix thinko in subproject entry sorting
  Teach core object handling functions about gitlinks
  Teach "fsck" not to follow subproject links
  Add "S_IFDIRLNK" file mode infrastructure for git links
  Add 'resolve_gitlink_ref()' helper function
  Avoid overflowing name buffer in deep directory structures
  diff-lib: use ce_mode_from_stat() rather than messing with modes manually
2007-04-21 17:21:10 -07:00
Julian Phillips
c774aab98c refs.c: add a function to sort a ref list, rather then sorting on add
Rather than sorting the refs list while building it, sort in one
go after it is built using a merge sort.  This has a large
performance boost with large numbers of refs.

It shouldn't happen that we read duplicate entries into the same
list, but just in case sort_ref_list drops them if the SHA1s are
the same, or dies, as we have no way of knowing which one is the
correct one.

Signed-off-by: Julian Phillips <julian@quantumfyre.co.uk>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-04-18 16:20:57 -07:00
Carlos Rica
1401f46bb4 Use const qualifier for 'sha1' parameter in delete_ref function
delete_ref function does not change the 'sha1' parameter. Non-const pointer
causes a compiler warning if you call to the function using a const argument.

Signed-off-by: Carlos Rica <jasampler@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-04-17 22:00:18 -07:00
Linus Torvalds
0ebde32c87 Add 'resolve_gitlink_ref()' helper function
This new function resolves a ref in *another* git repository.  It's
named for its intended use: to look up the git link to a subproject.

It's not actually wired up to anything yet, but we're getting closer to
having fundamental plumbing support for "links" from one git directory
to another, which is the basis of subproject support.

[jc: amended a FILE* leak]

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-04-10 13:44:16 -07:00
Lars Hjemli
19eba1515a Make builtin-branch.c handle the git config file
This moves the knowledge about .git/config usage out of refs.c and into
builtin-branch.c instead, which allows git-branch to update HEAD to point
at the moved branch before attempting to update the config file. It also
allows git-branch to exit with an error code if updating the config file
should fail.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-04-06 16:54:39 -07:00
Lars Hjemli
d26f9fef47 rename_ref(): only print a warning when config-file update fails
If git_config_rename_section() fails, rename_ref() used to return 1, which
left HEAD pointing to an absent refs/heads file (since the actual renaming
had already occurred).

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-04-06 16:54:37 -07:00
Nicolas Pitre
605fac8b5b update HEAD reflog when branch pointed to by HEAD is directly modified
The HEAD reflog is updated as well as the reflog for the branch pointed
to by HEAD whenever it is referenced with "HEAD".

There are some cases where a specific branch may be modified directly.
In those cases, the HEAD reflog should be updated as well if it is a
symref to that branch in order to be consistent.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-03-22 03:02:48 -07:00
Junio C Hamano
ed287ab7fa Merge branch 'maint'
* maint:
  git.el: Retrieve commit log information from .dotest directory.
  git.el: Avoid appending a signoff line that is already present.
  setup_git_directory_gently: fix off-by-one error
  user-manual: install user manual stylesheet with other web documents
  user-manual: fix rendering of history diagrams
  user-manual: fix missing colon in git-show example
  user-manual: fix inconsistent use of pull and merge
  user-manual: fix inconsistent example
  glossary: fix overoptimistic automatic linking of defined terms
  Documentation: s/seperator/separator/
  Adjust reflog filemode in shared repository
2007-03-10 22:07:26 -08:00
Matthias Kestenholz
443b92b6e5 Adjust reflog filemode in shared repository
Without this, committing in a group-shared repository would not work
even though all developers are in the same group.

Signed-off-by: Matthias Kestenholz <matthias@spinlock.ch>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-03-09 16:46:53 -08:00
Shawn O. Pearce
dc49cd769b Cast 64 bit off_t to 32 bit size_t
Some systems have sizeof(off_t) == 8 while sizeof(size_t) == 4.
This implies that we are able to access and work on files whose
maximum length is around 2^63-1 bytes, but we can only malloc or
mmap somewhat less than 2^32-1 bytes of memory.

On such a system an implicit conversion of off_t to size_t can cause
the size_t to wrap, resulting in unexpected and exciting behavior.
Right now we are working around all gcc warnings generated by the
-Wshorten-64-to-32 option by passing the off_t through xsize_t().

In the future we should make xsize_t on such problematic platforms
detect the wrapping and die if such a file is accessed.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-03-07 11:15:26 -08:00
Junio C Hamano
253e772ede Merge branch 'maint'
* maint:
  Unset NO_C99_FORMAT on Cygwin.
  Fix a "pointer type missmatch" warning.
  Fix some "comparison is always true/false" warnings.
  Fix an "implicit function definition" warning.
  Fix a "label defined but unreferenced" warning.
  Document the config variable format.suffix
  git-merge: fail correctly when we cannot fast forward.
  builtin-archive: use RUN_SETUP
  Fix git-gc usage note
2007-03-03 19:47:46 -08:00
Ramsay Jones
ee96d11beb Fix a "label defined but unreferenced" warning.
Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-03-03 18:43:25 -08:00
Junio C Hamano
cc44c7655f Mechanical conversion to use prefixcmp()
This mechanically converts strncmp() to use prefixcmp(), but only when
the parameters match specific patterns, so that they can be verified
easily.  Leftover from this will be fixed in a separate step, including
idiotic conversions like

    if (!strncmp("foo", arg, 3))

  =>

    if (!(-prefixcmp(arg, "foo")))

This was done by using this script in px.perl

   #!/usr/bin/perl -i.bak -p
   if (/strncmp\(([^,]+), "([^\\"]*)", (\d+)\)/ && (length($2) == $3)) {
           s|strncmp\(([^,]+), "([^\\"]*)", (\d+)\)|prefixcmp($1, "$2")|;
   }
   if (/strncmp\("([^\\"]*)", ([^,]+), (\d+)\)/ && (length($1) == $3)) {
           s|strncmp\("([^\\"]*)", ([^,]+), (\d+)\)|(-prefixcmp($2, "$1"))|;
   }

and running:

   $ git grep -l strncmp -- '*.c' | xargs perl px.perl

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-20 22:03:15 -08:00
Junio C Hamano
acb39f64c6 for-each-reflog: not having $GIT_DIR/logs directory is not an error.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-12 23:22:07 -08:00
Johannes Schindelin
b4dd485696 for_each_reflog_ent: be forgiving about missing message
Some reflogs are/were generated without a message; do not plainly
ignore those entries.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-08 16:06:10 -08:00
Junio C Hamano
d48744d1a8 create_symref(): create leading directories as needed.
Otherwise "git remote add -t master -m master" without the
initial fetch would not work.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-07 23:41:43 -08:00
Junio C Hamano
fcee5a145d for-each-reflog: fix case for empty log directory
When we remove the last reflog in a directory, opendir() would
succeed and we would iterate over its dirents, expecting retval
to be initialized to zero and setting it to non-zero only upon
seeing an error.  If the directory is empty, oops!, we do not
have anybody that touches retval.

The problem is because we initialize retval to errno even on
success from opendir(), which would leave the errno unmolested.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-07 09:18:57 -08:00
Junio C Hamano
d77ee72662 Merge branch 'master' into np/dreflog
This is to resolve conflicts early in preparation for possible
inclusion of "reflog on detached HEAD" series by Nico, as having
it in 1.5.0 would really help us remove confusion between
detached and attached states.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-03 23:05:34 -08:00
Nicolas Pitre
eb8381c885 scan reflogs independently from refs
Currently, the search for all reflogs depends on the existence of
corresponding refs under the .git/refs/ directory.  Let's scan the
.git/logs/ directory directly instead.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-03 11:57:18 -08:00
Junio C Hamano
a2f9fe92eb lock_any_ref_for_update(): do not accept malformatted refs.
We used to use lock_any_ref_for_update() because the command
needs to also update HEAD (which is not under refs/, so
lock_ref_sha1() cannot be used).  The function however did not
check for refs with illegal characters in them.

Use check_ref_format() to catch malformed refs.  For this check,
we specifically do not want to say having less than two levels
in the name is illegal to allow HEAD (and perhaps other special
refs in the future).

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-29 00:57:07 -08:00
Junio C Hamano
47fc52e287 create_symref(): do not assume pathname from git_path() persists long enough
Being lazy to rely on the cycling N buffers mkpath() and friends
return is nice in general, but it makes it too easy to introduce
new bugs that are "mysterious".

Introduction of read_ref() in create_symref() after calling
git_path() to get the git_HEAD value (i.e. the path to create a
new symref at) consumed more than the available buffers and
broke a later call to mkpath() that derives lockpath from it.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-28 02:16:46 -08:00
Nicolas Pitre
8b5157e407 add logref support to git-symbolic-ref
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-28 02:16:46 -08:00
Nicolas Pitre
41b625b047 move create_symref() past log_ref_write()
This doesn't change the code at all.  It is done to make the next patch
more obvious.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-28 02:16:46 -08:00
Nicolas Pitre
bd104db164 enable separate reflog for HEAD
If HEAD is tied to a branch then both logs/HEAD and logs/heads/<branch> are
updated.  This is also true for any symbolic refs in general, but only HEAD
will see its reflog created automatically.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-28 02:16:46 -08:00
Nicolas Pitre
1655707c9e lock_ref_sha1_basic(): remember the original name of a ref when resolving it
A ref might be pointing to another ref but only the name of the last ref
is remembered.  Let's remember about the first name as well.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-28 02:16:46 -08:00
Nicolas Pitre
9a13f0b71b make reflog filename independent from struct ref_lock
This allows for ref_log_write() to be used in a more flexible way,
and is needed for future changes.

This is only code reorg with no behavior change.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-28 02:16:46 -08:00
Junio C Hamano
8a56da2962 create_symref: check error return from open().
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-26 17:00:57 -08:00
Junio C Hamano
8ac65937d0 Make sure we do not write bogus reflog entries.
The file format dictates that entries are LF terminated so
the message cannot have one in it.  Chomp the message to make
sure it only has a single line if necessary, while removing the
leading whitespace.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-26 02:26:04 -08:00
Junio C Hamano
cb280e1075 Allow non-developer to clone, checkout and fetch more easily.
The code that uses committer_info() in reflog can barf and die
whenever it is asked to update a ref.  And I do not think
calling ignore_missing_committer_name() upfront like recent
receive-pack did in the aplication is a reasonable workaround.

What the patch does.

 - git_committer_info() takes one parameter.  It used to be "if
   this is true, then die() if the name is not available due to
   bad GECOS, otherwise issue a warning once but leave the name
   empty".  The reason was because we wanted to prevent bad
   commits from being made by git-commit-tree (and its
   callers).  The value 0 is only used by "git var -l".

   Now it takes -1, 0 or 1.  When set to -1, it does not
   complain but uses the pw->pw_name when name is not
   available.  Existing 0 and 1 values mean the same thing as
   they used to mean before.  0 means issue warnings and leave
   it empty, 1 means barf and die.

 - ignore_missing_committer_name() and its existing caller
   (receive-pack, to set the reflog) have been removed.

 - git-format-patch, to come up with the phoney message ID when
   asked to thread, now passes -1 to git_committer_info().  This
   codepath uses only the e-mail part, ignoring the name.  It
   used to barf and die.  The other call in the same program
   when asked to add signed-off-by line based on committer
   identity still passes 1 to make sure it barfs instead of
   adding a bogus s-o-b line.

 - log_ref_write in refs.c, to come up with the name to record
   who initiated the ref update in the reflog, passes -1.  It
   used to barf and die.

The last change means that git-update-ref, git-branch, and
commit walker backends can now be used in a repository with
reflog by somebody who does not have the user identity required
to make a commit.  They all used to barf and die.

I've run tests and all of them seem to pass, and also tried "git
clone" as a user whose GECOS is empty -- git clone works again
now (it was broken when reflog was enabled by default).

But this definitely needs extra sets of eyeballs.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-25 21:16:58 -08:00
Junio C Hamano
76a44c5c0b show-branch --reflog: show the reflog message at the top.
This changes the output so the list at the top shows the reflog
message, along with their relative timestamps.

You can use --reflog=<n> to show <n> most recent log entries, or
use --reflog=<n>,<b> to show <n> entries going back from the
entry <b>.  <b> can be either a number (so --reflog=4,20 shows 4
records starting from @{20}) or a timestamp (e.g. --reflog='4,1 day').

Here is a sample output (with --list option):

  $ git show-branch --reflog=10 --list jc/show-reflog
    [jc/show-reflog@{0}] (3 minutes ago) commit (amend): show-branch --ref
    [jc/show-reflog@{1}] (5 minutes ago) reset HEAD^
    [jc/show-reflog@{2}] (14 minutes ago) commit: show-branch --reflog: sho
    [jc/show-reflog@{3}] (14 minutes ago) commit: show-branch --reflog: sho
    [jc/show-reflog@{4}] (18 minutes ago) commit (amend): Extend read_ref_a
    [jc/show-reflog@{5}] (18 minutes ago) commit (amend): Extend read_ref_a
    [jc/show-reflog@{6}] (18 minutes ago) commit (amend): Extend read_ref_a
    [jc/show-reflog@{7}] (18 minutes ago) am: read_ref_at(): allow retrievi
    [jc/show-reflog@{8}] (18 minutes ago) reset --hard HEAD~4
    [jc/show-reflog@{9}] (61 minutes ago) commit: show-branch --reflog: use

This shows what I did more cleanly:

  $ git show-branch --reflog=10 jc/show-reflog
  ! [jc/show-reflog@{0}] (3 minutes ago) commit (amend): show-branch --ref
   ! [jc/show-reflog@{1}] (5 minutes ago) reset HEAD^
    ! [jc/show-reflog@{2}] (14 minutes ago) commit: show-branch --reflog:
     ! [jc/show-reflog@{3}] (14 minutes ago) commit: show-branch --reflog:
      ! [jc/show-reflog@{4}] (18 minutes ago) commit (amend): Extend read_
       ! [jc/show-reflog@{5}] (18 minutes ago) commit (amend): Extend read
        ! [jc/show-reflog@{6}] (18 minutes ago) commit (amend): Extend rea
         ! [jc/show-reflog@{7}] (18 minutes ago) am: read_ref_at(): allow
          ! [jc/show-reflog@{8}] (18 minutes ago) reset --hard HEAD~4
           ! [jc/show-reflog@{9}] (61 minutes ago) commit: show-branch --r
  ----------
  +          [jc/show-reflog@{0}] show-branch --reflog: show the reflog
    +        [jc/show-reflog@{2}] show-branch --reflog: show the reflog
   +++       [jc/show-reflog@{1}] show-branch --reflog: show the reflog
  +++++      [jc/show-reflog@{4}] Extend read_ref_at() to be usable fro
       +     [jc/show-reflog@{5}] Extend read_ref_at() to be usable fro
        +    [jc/show-reflog@{6}] Extend read_ref_at() to be usable fro
         +   [jc/show-reflog@{7}] read_ref_at(): allow retrieving the r
           + [jc/show-reflog@{9}] show-branch --reflog: use updated rea
           + [jc/show-reflog@{9}^] read_ref_at(): allow reporting the c
           + [jc/show-reflog@{9}~2] show-branch --reflog: show the refl
           + [jc/show-reflog@{9}~3] read_ref_at(): allow retrieving the
  ++++++++++ [jc/show-reflog@{8}] dwim_ref(): Separate name-to-ref DWIM

At @{9}, I had a commit to complete 5 patch series, but I wanted
to consolidate two commits that enhances read_ref_at() into one
(they were @{9}^ and @{9}~3), and another two that touch show-branch
into one (@{9} and @{9}~2).

I first saved them with "format-patch -4", and then did a reset
at @{8}.  At @{7}, I applied one of them with "am", and then
used "git-apply" on the other one, and amended the commit at
@{6} (so @{6} and @{7} has the same parent).  I did not like the
log message, so I amended again at @{5}.

Then I cherry-picked @{9}~2 to create @{3} (the log message
shows that it needs to learn to set GIT_REFLOG_ACTION -- it uses
"git-commit" and the log entry is attributed for it).  Another
cherry-pick built @{2} out of @{9}, but what I wanted to do was
to squash these two into one, so I did a "reset HEAD^" at @{1}
and then made the final commit by amending what was at the top.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-19 17:57:53 -08:00
Junio C Hamano
16d7cc90dd Extend read_ref_at() to be usable from places other than sha1_name.
You can pass an extra argument to the function to receive the
reflog message information.  Also when the log does not go back
beyond the point the user asked, the cut-off time and count are
given back to the caller for emitting the error messages as
appropriately.

We could later add configuration for get_sha1_basic() to make it
an error instead of it being just a warning.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-19 17:57:53 -08:00
Junio C Hamano
cb48cb585f refs.c::read_ref_at(): fix bogus munmap() call.
The code uses mmap() to read reflog data, but moves the pointer around
while reading, and uses that updated pointer in the call to munmap().

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-19 00:41:37 -08:00
Junio C Hamano
2266bf27b3 for_each_reflog_ent: do not leak FILE *
The callback function can signal an early return by returning non-zero,
but the function leaked the FILE * opened on the reflog when doing so.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-18 23:25:54 -08:00
Jason Riedy
d9e74d5745 Solaris 5.8 returns ENOTDIR for inappropriate renames.
The reflog code clears empty directories when rename returns
either EISDIR or ENOTDIR.  Seems to be the only place.

Signed-off-by: Jason Riedy <ejr@cs.berkeley.edu>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-15 22:27:05 -08:00
Junio C Hamano
e861ce1692 Merge branch 'jc/bare'
* jc/bare:
  Disallow working directory commands in a bare repository.
  git-fetch: allow updating the current branch in a bare repository.
  Introduce is_bare_repository() and core.bare configuration variable
  Move initialization of log_all_ref_updates
2007-01-11 16:50:36 -08:00
Johannes Schindelin
883d60fa97 Sanitize for_each_reflog_ent()
It used to ignore the return value of the helper function; now, it
expects it to return 0, and stops iteration upon non-zero return
values; this value is then passed on as the return value of
for_each_reflog_ent().

Further, it makes no sense to force the parsing upon the helper
functions; for_each_reflog_ent() now calls the helper function with
old and new sha1, the email, the timestamp & timezone, and the message.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-09 03:04:04 -08:00
Andy Whitcroft
93822c2239 short i/o: fix calls to write to use xwrite or write_in_full
We have a number of badly checked write() calls.  Often we are
expecting write() to write exactly the size we requested or fail,
this fails to handle interrupts or short writes.  Switch to using
the new write_in_full().  Otherwise we at a minimum need to check
for EINTR and EAGAIN, where this is appropriate use xwrite().

Note, the changes to config handling are much larger and handled
in the next patch in the sequence.

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-08 15:44:47 -08:00
Andy Whitcroft
93d26e4cb9 short i/o: fix calls to read to use xread or read_in_full
We have a number of badly checked read() calls.  Often we are
expecting read() to read exactly the size we requested or fail, this
fails to handle interrupts or short reads.  Add a read_in_full()
providing those semantics.  Otherwise we at a minimum need to check
for EINTR and EAGAIN, where this is appropriate use xread().

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-08 15:44:47 -08:00
Junio C Hamano
7d1864ce67 Introduce is_bare_repository() and core.bare configuration variable
This removes the old is_bare_git_dir(const char *) to ask if a
directory, if it is a GIT_DIR, is a bare repository, and
replaces it with is_bare_repository(void *).  The function looks
at core.bare configuration variable if exists but uses the old
heuristics: if it is ".git" or ends with "/.git", then it does
not look like a bare repository, otherwise it does.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-07 21:36:35 -08:00
Junio C Hamano
510c5a8ee3 Move initialization of log_all_ref_updates
The patches to prevent Porcelainish that require working tree
from doing any damage in a bare repository make a lot of sense,
and I want to make the is_bare_git_dir() function more reliable.

In order to allow the repository owner override the heuristic
implemented in is_bare_git_dir() if/when it misidentifies a
particular repository, it would make sense to introduce a new
configuration variable "[core] bare = true/false", and make
is_bare_git_dir() notice it.

The scripts would do a 'repo-config --bool --get core.bare' and
iff the command fails (i.e. there is no such variable in the
configuration file), it would use the heuristic implemented at
the script level [*1*].

However, setup_git_env() which is called a lot earlier than we
even read from the repository configuration currently makes a
call to is_bare_git_dir(), in order to change the default
setting for log_all_ref_updates.  It somehow feels that this is
a hack.

By the way, [*1*] is another thing I hate about the current
config mechanism.  "git-repo-config --get" does not know what
the possible configuration variables are, let alone what the
default values for them are.  It allows us not to maintain a
centralized configuration table, which makes it easy to
introduce ad-hoc variables and gives a warm fuzzy feeling of
being modular, but my feeling is that it is turning out to be a
rather high price to pay for scripts.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-07 21:36:35 -08:00
Junio C Hamano
cf2999eb4c Merge branch 'sp/mmap'
* sp/mmap: (27 commits)
  Spell default packedgitlimit slightly differently
  Increase packedGit{Limit,WindowSize} on 64 bit systems.
  Update packedGit config option documentation.
  mmap: set FD_CLOEXEC for file descriptors we keep open for mmap()
  pack-objects: fix use of use_pack().
  Fix random segfaults in pack-objects.
  Cleanup read_cache_from error handling.
  Replace mmap with xmmap, better handling MAP_FAILED.
  Release pack windows before reporting out of memory.
  Default core.packdGitWindowSize to 1 MiB if NO_MMAP.
  Test suite for sliding window mmap implementation.
  Create pack_report() as a debugging aid.
  Support unmapping windows on 'temporary' packfiles.
  Improve error message when packfile mmap fails.
  Ensure core.packedGitWindowSize cannot be less than 2 pages.
  Load core configuration in git-verify-pack.
  Fully activate the sliding window pack access.
  Unmap individual windows rather than entire files.
  Document why header parsing won't exceed a window.
  Loop over pack_windows when inflating/accessing data.
  ...

Conflicts:

	cache.h
	pack-check.c
2007-01-07 00:12:47 -08:00
Junio C Hamano
e27e609bbf Merge branch 'maint'
* maint:
  pack-check.c::verify_packfile(): don't run SHA-1 update on huge data
  Fix infinite loop when deleting multiple packed refs.
2007-01-04 22:28:21 -08:00
Junio C Hamano
1084b845d9 Fix infinite loop when deleting multiple packed refs.
It was stupid to link the same element twice to lock_file_list
and end up in a loop, so we certainly need a fix.

But it is not like we are taking a lock on multiple files in
this case.  It is just that we leave the linked element on the
list even after commit_lock_file() successfully removes the
cruft.

We cannot remove the list element in commit_lock_file(); if we
are interrupted in the middle of list manipulation, the call to
remove_lock_file_on_signal() will happen with a broken list
structure pointed by lock_file_list, which would cause the cruft
to remain, so not removing the list element is the right thing
to do.  Instead we should be reusing the element already on the
list.

There is already a code for that in lock_file() function in
lockfile.c.  The code checks lk->next and the element is linked
only when it is not already on the list -- which is incorrect
for the last element on the list (which has NULL in its next
field), but if you read the check as "is this element already on
the list?" it actually makes sense.  We do not want to link it
on the list again, nor we would want to set up signal/atexit
over and over.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-03 01:22:35 -08:00
Shawn O. Pearce
c4712e4553 Replace mmap with xmmap, better handling MAP_FAILED.
In some cases we did not even bother to check the return value of
mmap() and just assume it worked.  This is bad, because if we are
out of virtual address space the kernel returned MAP_FAILED and we
would attempt to dereference that address, segfaulting without any
real error output to the user.

We are replacing all calls to mmap() with xmmap() and moving all
MAP_FAILED checking into that single location.  If a mmap call
fails we try to release enough least-recently-used pack windows
to possibly succeed, then retry the mmap() attempt.  If we cannot
mmap even after releasing pack memory then we die() as none of our
callers have any reasonable recovery strategy for a failed mmap.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-29 11:36:45 -08:00
Junio C Hamano
e19b9ddab3 core.logallrefupdates: log remotes/ tracking branches.
Not using reflog for tags/ was very sensible; not giving reflog
for the remotes/ was not.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-28 18:37:33 -08:00
Junio C Hamano
e29cb53a8b reflog: fix warning message.
When ref@{N} is specified on a ref that has only M entries (M < N),
instead of saying the initial timestamp the reflog has, warn that
there is only M entries.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-20 17:22:10 -08:00
Junio C Hamano
2ff81662c2 add for_each_reflog_ent() iterator
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-20 17:22:10 -08:00
Junio C Hamano
85023577a8 simplify inclusion of system header files.
This is a mechanical clean-up of the way *.c files include
system header files.

 (1) sources under compat/, platform sha-1 implementations, and
     xdelta code are exempt from the following rules;

 (2) the first #include must be "git-compat-util.h" or one of
     our own header file that includes it first (e.g. config.h,
     builtin.h, pkt-line.h);

 (3) system headers that are included in "git-compat-util.h"
     need not be included in individual C source files.

 (4) "git-compat-util.h" does not have to include subsystem
     specific header files (e.g. expat.h).

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-20 09:51:35 -08:00
Johannes Schindelin
dc81c58cd6 git-branch: rename config vars branch.<branch>.*, too
When renaming a branch, the corresponding config section should
be renamed, too.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-16 13:38:44 -08:00
Junio C Hamano
abcb49cb56 Merge branch 'lh/branch-rename'
* lh/branch-rename:
  git-branch: let caller specify logmsg
  rename_ref: use lstat(2) when testing for symlink
  git-branch: add options and tests for branch renaming

Conflicts:

	builtin-branch.c
2006-12-13 11:07:51 -08:00
Junio C Hamano
37adac765a send-pack: tighten checks for remote names
"git push $URL HEAD~6" created a bogus ref HEAD~6 immediately
under $GIT_DIR of the remote repository.  While we should keep
refspecs that have arbitrary extended SHA-1 expression on the
source side working (e.g. "HEAD~6:refs/tags/yesterday"), we
should not create bogus ref on the other end.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-13 10:30:11 -08:00
Lars Hjemli
c976d415e5 git-branch: add options and tests for branch renaming
Extend git-branch with the following options:

  git-branch -m|-M [<oldbranch>] newbranch

The -M variation is required to force renaming over an exsisting
branchname.

This also indroduces $GIT_DIR/RENAME_REF which is a "metabranch"
used when renaming branches. It will always hold the original sha1
for the latest renamed branch.

Additionally, if $GIT_DIR/logs/RENAME_REF exists, all branch rename
events are logged there.

Finally, some testcases are added to verify the new options.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-05 23:50:57 -08:00
Lars Hjemli
678d0f4cbf git-branch: let caller specify logmsg
This changes the signature of rename_ref() in refs.[hc] to include a
logmessage for the reflogs.

Also, builtin-branch.c is modified to provide a proper logmessage + call
setup_ident() before any logmessages are written.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-05 23:50:57 -08:00
Lars Hjemli
16c2bfbb44 rename_ref: use lstat(2) when testing for symlink
The current check for symlinked reflogs was based on stat(2), which is
utterly embarrassing.

Fix it, and add a matching testcase.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-05 23:50:57 -08:00
Junio C Hamano
f4204ab9f6 Store peeled refs in packed-refs (take 2).
This fixes the previous implementation which failed to optimize
repositories with tons of lightweight tags.  The updated
packed-refs format begins with "# packed-refs with:" line that
lists the kind of extended data the file records.  Currently,
there is only one such extension defined, "peeled".  This stores
the "peeled tag" on a line that immediately follows a line for a
tag object itself in the format "^<sha-1>".

The header line itself and any extended data are ignored by
older implementation, so packed-refs file generated with this
version can still be used by older git.  packed-refs made by
older git can of course be used with this version.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-11-21 23:37:35 -08:00
Junio C Hamano
cf0adba788 Store peeled refs in packed-refs file.
This would speed up "show-ref -d" in a repository with mostly
packed tags.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-11-19 18:45:44 -08:00
Junio C Hamano
ef06b91804 do_for_each_ref: perform the same sanity check for leftovers.
An earlier commit b37a562a added a check to see if the ref
points at a valid object (as a part of 'negative ref' support
which we currently do not use), but did so only while iterating
over both packed and loose refs, and forgot to apply the same
check while iterating over the remaining ones.

We might want to replace the "if null then omit it" check with
"eh --- what business does a 0{40} value have here?" complaint
later since we currently do not use negative refs, but that is
a separate issue.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-11-19 18:44:29 -08:00
Junio C Hamano
2e6d8f181d Merge branch 'jc/reflog' into lj/refs
* jc/reflog:
  sha1_name.c: avoid compilation warnings.
  ref-log: allow ref@{count} syntax.
2006-10-26 18:48:30 -07:00
Junio C Hamano
3b463c3f02 ref-log: fix D/F conflict coming from deleted refs.
After deleting a branch l/k, you should be able to create a
branch l.  Earlier we added remove_empty_directories() on the
ref creation side to remove leftover .git/refs/l directory but
we also need a matching code to remove .git/logs/refs/l
directory.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-10-19 01:28:47 -07:00
Junio C Hamano
1974bf620b core.logallrefupdates thinko-fix 2006-10-09 21:15:59 -07:00
Junio C Hamano
4057deb5de core.logallrefupdates create new log file only for branch heads.
It used to mean "create log file for any ref that is updated",
but now it creates new log files only for branch heads.

The old behaviour made this configuration less useful than
otherwise it would be; automatically creating log file for tags
is almost always not useful.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-10-08 01:35:18 -07:00
Junio C Hamano
ab2a1a32ff ref-log: allow ref@{count} syntax.
Often I find myself wanting to say 'tip of "next" before I
merged the last three topics'.  Now I can say that with:

	git log next@{3}..next

Since small integers alone are invalid input strings to
approxidate, there is no fear of confusion.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-10-05 23:17:11 -07:00
Junio C Hamano
ff989b8d46 Merge branch 'master' into lj/refs
* master: (99 commits)
  lock_ref_sha1_basic does not remove empty directories on BSD
  git-push: .git/remotes/ file does not require SP after colon
  git-mv: invalidate the removed path properly in cache-tree
  Makefile: install and clean merge-recur, still.
  GIT 1.4.3-rc1
  gitweb: tree view: hash_base and hash are now context sensitive
  git-diff -B output fix.
  fetch: Reset remote refs list each time fetch_main is called
  Remove -fPIC which was only needed for Git.xs
  Fix approxidate() to understand 12:34 AM/PM are 00:34 and 12:34
  git-diff -B output fix.
  Make cvsexportcommit remove files.
  diff --stat: ensure at least one '-' for deletions, and one '+' for additions
  diff --stat=width[,name-width]: allow custom diffstat output width.
  gitweb: History: blob and tree are first, then commitdiff, etc
  gitweb: Remove redundant "commit" from history
  http/ftp: optionally ask curl to not use EPSV command
  gitweb: Don't use quotemeta on internally generated strings
  gitweb: Add snapshot to shortlog
  gitweb: Factor out gitweb_have_snapshot()
  ...
2006-10-02 11:49:59 -07:00
Dennis Stosberg
7a21632fa3 lock_ref_sha1_basic does not remove empty directories on BSD
lock_ref_sha1_basic relies on errno beeing set to EISDIR by the
call to read() in resolve_ref() to detect directories.  But calling
read() on a directory under NetBSD returns EPERM, and even succeeds
for local filesystems on FreeBSD.

Signed-off-by: Dennis Stosberg <dennis@stosberg.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-10-02 11:49:45 -07:00