git
9 years agoMerge branch 'js/fsck-tag-validation'
Junio C Hamano [Fri, 26 Sep 2014 21:39:43 +0000 (14:39 -0700)] 
Merge branch 'js/fsck-tag-validation'

Teach "git fsck" to inspect the contents of annotated tag objects.

* js/fsck-tag-validation:
  Make sure that index-pack --strict checks tag objects
  Add regression tests for stricter tag fsck'ing
  fsck: check tag objects' headers
  Make sure fsck_commit_buffer() does not run out of the buffer
  fsck_object(): allow passing object data separately from the object itself
  Refactor type_from_string() to allow continuing after detecting an error

9 years agoMerge branch 'jk/faster-name-conflicts'
Junio C Hamano [Fri, 26 Sep 2014 21:39:43 +0000 (14:39 -0700)] 
Merge branch 'jk/faster-name-conflicts'

Optimize the check to see if a ref $F can be created by making sure
no existing ref has $F/ as its prefix, which especially matters in
a repository with a large number of existing refs.

* jk/faster-name-conflicts:
  refs: speed up is_refname_available

9 years agoMerge branch 'jk/write-packed-refs-via-stdio'
Junio C Hamano [Fri, 26 Sep 2014 21:39:42 +0000 (14:39 -0700)] 
Merge branch 'jk/write-packed-refs-via-stdio'

Optimize the code path to write out the packed-refs file, which
especially matters in a repository with a large number of refs.

* jk/write-packed-refs-via-stdio:
  refs: write packed_refs file using stdio

9 years agoUpdate draft release notes to 2.2
Junio C Hamano [Fri, 19 Sep 2014 18:51:14 +0000 (11:51 -0700)] 
Update draft release notes to 2.2

Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agoSync with Git 2.1.1
Junio C Hamano [Fri, 19 Sep 2014 21:22:34 +0000 (14:22 -0700)] 
Sync with Git 2.1.1

9 years agoGit 2.1.1 v2.1.1
Junio C Hamano [Fri, 19 Sep 2014 21:21:31 +0000 (14:21 -0700)] 
Git 2.1.1

Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agoMerge branch 'et/spell-poll-infinite-with-minus-one-only' into maint
Junio C Hamano [Fri, 19 Sep 2014 21:05:13 +0000 (14:05 -0700)] 
Merge branch 'et/spell-poll-infinite-with-minus-one-only' into maint

* et/spell-poll-infinite-with-minus-one-only:
  upload-pack: keep poll(2)'s timeout to -1

9 years agoMerge branch 'nd/fetch-pass-quiet-to-gc-child-process' into maint
Junio C Hamano [Fri, 19 Sep 2014 21:05:12 +0000 (14:05 -0700)] 
Merge branch 'nd/fetch-pass-quiet-to-gc-child-process' into maint

* nd/fetch-pass-quiet-to-gc-child-process:
  fetch: silence git-gc if --quiet is given
  fetch: convert argv_gc_auto to struct argv_array

9 years agoMerge branch 'jk/prune-top-level-refs-after-packing' into maint
Junio C Hamano [Fri, 19 Sep 2014 21:05:12 +0000 (14:05 -0700)] 
Merge branch 'jk/prune-top-level-refs-after-packing' into maint

* jk/prune-top-level-refs-after-packing:
  pack-refs: prune top-level refs like "refs/foo"

9 years agoMerge branch 'jk/fast-import-fixes' into maint
Junio C Hamano [Fri, 19 Sep 2014 21:05:12 +0000 (14:05 -0700)] 
Merge branch 'jk/fast-import-fixes' into maint

* jk/fast-import-fixes:
  fast-import: fix buffer overflow in dump_tags
  fast-import: clean up pack_data pointer in end_packfile

9 years agoMerge branch 'jn/unpack-trees-checkout-m-carry-deletion' into maint
Junio C Hamano [Fri, 19 Sep 2014 21:05:12 +0000 (14:05 -0700)] 
Merge branch 'jn/unpack-trees-checkout-m-carry-deletion' into maint

* jn/unpack-trees-checkout-m-carry-deletion:
  checkout -m: attempt merge when deletion of path was staged
  unpack-trees: use 'cuddled' style for if-else cascade
  unpack-trees: simplify 'all other failures' case

9 years agoMerge branch 'sp/pack-protocol-doc-on-shallow' into maint
Junio C Hamano [Fri, 19 Sep 2014 21:05:11 +0000 (14:05 -0700)] 
Merge branch 'sp/pack-protocol-doc-on-shallow' into maint

* sp/pack-protocol-doc-on-shallow:
  Document LF appearing in shallow command during send-pack/receive-pack

9 years agoMerge branch 'jk/prompt-stash-could-be-packed' into maint
Junio C Hamano [Fri, 19 Sep 2014 21:05:11 +0000 (14:05 -0700)] 
Merge branch 'jk/prompt-stash-could-be-packed' into maint

* jk/prompt-stash-could-be-packed:
  git-prompt: do not look for refs/stash in $GIT_DIR

9 years agoMerge branch 'rs/refresh-beyond-symlink' into maint
Junio C Hamano [Fri, 19 Sep 2014 21:05:11 +0000 (14:05 -0700)] 
Merge branch 'rs/refresh-beyond-symlink' into maint

* rs/refresh-beyond-symlink:
  read-cache: check for leading symlinks when refreshing index

9 years agoMerge branch 'lf/bundle-exclusion' into maint
Junio C Hamano [Fri, 19 Sep 2014 21:05:11 +0000 (14:05 -0700)] 
Merge branch 'lf/bundle-exclusion' into maint

* lf/bundle-exclusion:
  bundle: fix exclusion of annotated tags

9 years agoMerge branch 'jc/apply-ws-prefix' into maint
Junio C Hamano [Fri, 19 Sep 2014 21:05:10 +0000 (14:05 -0700)] 
Merge branch 'jc/apply-ws-prefix' into maint

* jc/apply-ws-prefix:
  apply: omit ws check for excluded paths
  apply: hoist use_patch() helper for path exclusion up
  apply: use the right attribute for paths in non-Git patches

Conflicts:
builtin/apply.c

9 years agoMerge branch 'jk/command-line-config-empty-string' into maint
Junio C Hamano [Fri, 19 Sep 2014 21:05:10 +0000 (14:05 -0700)] 
Merge branch 'jk/command-line-config-empty-string' into maint

* jk/command-line-config-empty-string:
  config: teach "git -c" to recognize an empty string

Conflicts:
config.c

9 years agoMerge branch 'jk/pretty-empty-format' into maint
Junio C Hamano [Fri, 19 Sep 2014 21:05:09 +0000 (14:05 -0700)] 
Merge branch 'jk/pretty-empty-format' into maint

* jk/pretty-empty-format:
  pretty: make empty userformats truly empty
  pretty: treat "--format=" as an empty userformat
  revision: drop useless string offset when parsing "--pretty"

9 years agoMerge branch 'jk/fsck-exit-code-fix'
Junio C Hamano [Fri, 19 Sep 2014 18:38:42 +0000 (11:38 -0700)] 
Merge branch 'jk/fsck-exit-code-fix'

"git fsck" failed to report that it found corrupt objects via its
exit status in some cases.

* jk/fsck-exit-code-fix:
  fsck: return non-zero status on missing ref tips
  fsck: exit with non-zero status upon error from fsck_obj()

9 years agoMerge branch 'so/rebase-doc'
Junio C Hamano [Fri, 19 Sep 2014 18:38:42 +0000 (11:38 -0700)] 
Merge branch 'so/rebase-doc'

* so/rebase-doc:
  Documentation/git-rebase.txt: <upstream> must be given to specify <branch>

9 years agoMerge branch 'ir/makefile-typofix'
Junio C Hamano [Fri, 19 Sep 2014 18:38:41 +0000 (11:38 -0700)] 
Merge branch 'ir/makefile-typofix'

* ir/makefile-typofix:
  Makefile: fix some typos in the preamble

9 years agoMerge branch 'wk/pre-push-sample-hook'
Junio C Hamano [Fri, 19 Sep 2014 18:38:41 +0000 (11:38 -0700)] 
Merge branch 'wk/pre-push-sample-hook'

* wk/pre-push-sample-hook:
  pre-push.sample: Write error message to stderr

9 years agoMerge branch 'ss/compat-default-source-for-newer-gnu'
Junio C Hamano [Fri, 19 Sep 2014 18:38:41 +0000 (11:38 -0700)] 
Merge branch 'ss/compat-default-source-for-newer-gnu'

* ss/compat-default-source-for-newer-gnu:
  compat-util: add _DEFAULT_SOURCE define

9 years agoMerge branch 'mr/mark-i18n-log-rerere'
Junio C Hamano [Fri, 19 Sep 2014 18:38:40 +0000 (11:38 -0700)] 
Merge branch 'mr/mark-i18n-log-rerere'

* mr/mark-i18n-log-rerere:
  builtin/log.c: mark strings for translation
  rerere.h: mark string for translation

9 years agoMerge branch 'js/no-test-cmp-for-binaries'
Junio C Hamano [Fri, 19 Sep 2014 18:38:40 +0000 (11:38 -0700)] 
Merge branch 'js/no-test-cmp-for-binaries'

* js/no-test-cmp-for-binaries:
  t9300: use test_cmp_bin instead of test_cmp to compare binary files

9 years agoMerge branch 'ta/config-add-to-empty-or-true-fix'
Junio C Hamano [Fri, 19 Sep 2014 18:38:40 +0000 (11:38 -0700)] 
Merge branch 'ta/config-add-to-empty-or-true-fix'

"git config --add section.var val" used to lose existing
section.var whose value was an empty string.

* ta/config-add-to-empty-or-true-fix:
  config: avoid a funny sentinel value "a^"
  make config --add behave correctly for empty and NULL values

9 years agoMerge branch 'sp/doc-update-index-cacheinfo'
Junio C Hamano [Fri, 19 Sep 2014 18:38:39 +0000 (11:38 -0700)] 
Merge branch 'sp/doc-update-index-cacheinfo'

* sp/doc-update-index-cacheinfo:
  Documentation: use single-parameter --cacheinfo in example

9 years agoMerge branch 'rs/export-strbuf-addchars'
Junio C Hamano [Fri, 19 Sep 2014 18:38:39 +0000 (11:38 -0700)] 
Merge branch 'rs/export-strbuf-addchars'

Code clean-up.

* rs/export-strbuf-addchars:
  strbuf: use strbuf_addchars() for adding a char multiple times
  strbuf: export strbuf_addchars()

9 years agoMerge branch 'kb/perf-trace'
Junio C Hamano [Fri, 19 Sep 2014 18:38:39 +0000 (11:38 -0700)] 
Merge branch 'kb/perf-trace'

Compilation fix for some compilers.

* kb/perf-trace:
  trace: correct trace_strbuf() parameter type for !HAVE_VARIADIC_MACROS

9 years agoMerge branch 'jc/parseopt-verify-short-name'
Junio C Hamano [Fri, 19 Sep 2014 18:38:38 +0000 (11:38 -0700)] 
Merge branch 'jc/parseopt-verify-short-name'

Add checks for a common programming mistake to assign the same
short option name to two separate options to help developers.

* jc/parseopt-verify-short-name:
  parse-options: detect attempt to add a duplicate short option name

9 years agoMerge branch 'mk/reachable-protect-detached-head'
Junio C Hamano [Fri, 19 Sep 2014 18:38:38 +0000 (11:38 -0700)] 
Merge branch 'mk/reachable-protect-detached-head'

* mk/reachable-protect-detached-head:
  reachable.c: add HEAD to reachability starting commits

9 years agoMerge branch 'tb/complete-diff-ignore-blank-lines'
Junio C Hamano [Fri, 19 Sep 2014 18:38:38 +0000 (11:38 -0700)] 
Merge branch 'tb/complete-diff-ignore-blank-lines'

* tb/complete-diff-ignore-blank-lines:
  completion: Add --ignore-blank-lines for diff

9 years agoMerge branch 'as/calloc-takes-nmemb-then-size'
Junio C Hamano [Fri, 19 Sep 2014 18:38:37 +0000 (11:38 -0700)] 
Merge branch 'as/calloc-takes-nmemb-then-size'

Code clean-up.

* as/calloc-takes-nmemb-then-size:
  calloc() and xcalloc() takes nmemb and then size

9 years agoMerge branch 'tb/crlf-tests'
Junio C Hamano [Fri, 19 Sep 2014 18:38:37 +0000 (11:38 -0700)] 
Merge branch 'tb/crlf-tests'

* tb/crlf-tests:
  MinGW: update tests to handle a native eol of crlf
  Makefile: propagate NATIVE_CRLF to C
  t0027: Tests for core.eol=native, eol=lf, eol=crlf

9 years agoMerge branch 'rs/simplify-http-walker'
Junio C Hamano [Fri, 19 Sep 2014 18:38:36 +0000 (11:38 -0700)] 
Merge branch 'rs/simplify-http-walker'

Code clean-up.

* rs/simplify-http-walker:
  http-walker: simplify process_alternates_response() using strbuf

9 years agoMerge branch 'rs/simplify-config-include'
Junio C Hamano [Fri, 19 Sep 2014 18:38:36 +0000 (11:38 -0700)] 
Merge branch 'rs/simplify-config-include'

Code clean-up.

* rs/simplify-config-include:
  config: simplify git_config_include()

9 years agoMerge branch 'rs/merge-tree-simplify'
Junio C Hamano [Fri, 19 Sep 2014 18:38:36 +0000 (11:38 -0700)] 
Merge branch 'rs/merge-tree-simplify'

Code clean-up.

* rs/merge-tree-simplify:
  merge-tree: remove unused df_conflict arguments

9 years agoMerge branch 'da/styles'
Junio C Hamano [Fri, 19 Sep 2014 18:38:35 +0000 (11:38 -0700)] 
Merge branch 'da/styles'

* da/styles:
  stylefix: asterisks stick to the variable, not the type

9 years agoMerge branch 'ah/grammofix'
Junio C Hamano [Fri, 19 Sep 2014 18:38:35 +0000 (11:38 -0700)] 
Merge branch 'ah/grammofix'

* ah/grammofix:
  grammofix in user-facing messages

9 years agoMerge branch 'rs/more-uses-of-skip-prefix'
Junio C Hamano [Fri, 19 Sep 2014 18:38:35 +0000 (11:38 -0700)] 
Merge branch 'rs/more-uses-of-skip-prefix'

Code clean-up.

* rs/more-uses-of-skip-prefix:
  pack-write: simplify index_pack_lockfile using skip_prefix() and xstrfmt()
  connect: simplify check_ref() using skip_prefix() and starts_with()

9 years agoMerge branch 'mb/fast-import-delete-root'
Junio C Hamano [Fri, 19 Sep 2014 18:38:34 +0000 (11:38 -0700)] 
Merge branch 'mb/fast-import-delete-root'

An attempt to remove the entire tree in the "git fast-import" input
stream caused it to misbehave.

* mb/fast-import-delete-root:
  fast-import: fix segfault in store_tree()
  t9300: test filedelete command

9 years agoMerge branch 'jp/index-with-corrupt-stages'
Junio C Hamano [Fri, 19 Sep 2014 18:38:34 +0000 (11:38 -0700)] 
Merge branch 'jp/index-with-corrupt-stages'

A broken reimplementation of Git could write an invalid index that
records both stage #0 and higher stage entries for the same path.
Notice and reject such an index, as there is no sensible fallback
(we do not know if the broken tool wanted to resolve and forgot to
remove higher stage entries, or if it wanted to unresolve and
forgot to remove the stage#0 entry).

* jp/index-with-corrupt-stages:
  read_index_unmerged(): remove unnecessary loop index adjustment
  read_index_from(): catch out of order entries when reading an index file

9 years agoMerge branch 'jk/index-pack-threading-races'
Junio C Hamano [Fri, 19 Sep 2014 18:38:33 +0000 (11:38 -0700)] 
Merge branch 'jk/index-pack-threading-races'

When receiving an invalid pack stream that records the same object
twice, multiple threads got confused due to a race.  We should
reject or correct such a stream upon receiving, but that will be a
larger change.

* jk/index-pack-threading-races:
  index-pack: fix race condition with duplicate bases

9 years agoMerge branch 'jk/commit-author-parsing'
Junio C Hamano [Fri, 19 Sep 2014 18:38:33 +0000 (11:38 -0700)] 
Merge branch 'jk/commit-author-parsing'

Code clean-up.

* jk/commit-author-parsing:
  determine_author_info(): copy getenv output
  determine_author_info(): reuse parsing functions
  date: use strbufs in date-formatting functions
  record_author_date(): use find_commit_header()
  record_author_date(): fix memory leak on malformed commit
  commit: provide a function to find a header in a buffer

9 years agoMerge branch 'bb/date-iso-strict'
Junio C Hamano [Fri, 19 Sep 2014 18:38:32 +0000 (11:38 -0700)] 
Merge branch 'bb/date-iso-strict'

"log --date=iso" uses a slight variant of ISO 8601 format that is
made more human readable.  A new "--date=iso-strict" option gives
datetime output that is more strictly conformant.

* bb/date-iso-strict:
  pretty: provide a strict ISO 8601 date format

9 years agoMerge branch 'mb/build-contrib-svn-fe'
Junio C Hamano [Fri, 19 Sep 2014 18:38:32 +0000 (11:38 -0700)] 
Merge branch 'mb/build-contrib-svn-fe'

* mb/build-contrib-svn-fe:
  contrib/svn-fe: fix Makefile

9 years agoMerge branch 'jk/fast-export-anonymize'
Junio C Hamano [Fri, 19 Sep 2014 18:38:31 +0000 (11:38 -0700)] 
Merge branch 'jk/fast-export-anonymize'

Sometimes users want to report a bug they experience on their
repository, but they are not at liberty to share the contents of
the repository.  "fast-export" was taught an "--anonymize" option
to replace blob contents, names of people and paths and log
messages with bland and simple strings to help them.

* jk/fast-export-anonymize:
  docs/fast-export: explain --anonymize more completely
  teach fast-export an --anonymize option

9 years agoMerge branch 'jk/send-pack-many-refspecs'
Junio C Hamano [Fri, 19 Sep 2014 18:38:31 +0000 (11:38 -0700)] 
Merge branch 'jk/send-pack-many-refspecs'

The number of refs that can be pushed at once over smart HTTP was
limited by the command line length.  The limitation has been lifted
by passing these refs from the standard input of send-pack.

* jk/send-pack-many-refspecs:
  send-pack: take refspecs over stdin

9 years agoDocumentation/git-rebase.txt: <upstream> must be given to specify <branch>
Sergey Organov [Fri, 29 Aug 2014 13:51:46 +0000 (17:51 +0400)] 
Documentation/git-rebase.txt: <upstream> must be given to specify <branch>

Current syntax description makes one wonder if there is any
syntactic way to distinguish between <branch> and <upstream> so that
one can specify <branch> but not <upstream>, but that is not the
case.

Make it explicit that these arguments are positional, i.e. the
earlier ones cannot be omitted if you want to give later ones.

Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agocompat-util: add _DEFAULT_SOURCE define
Sergey Senozhatsky [Sun, 14 Sep 2014 05:33:35 +0000 (14:33 +0900)] 
compat-util: add _DEFAULT_SOURCE define

glibc has deprecated the use of _BSD_SOURCE define

  warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE"

To make it easier to maintain a cross platform source code, that
warning can be suppressed by _DEFAULT_SOURCE.

Define both _BSD_SOURCE and _DEFAULT_SOURCE to clean-up the build.

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agoMakefile: fix some typos in the preamble
Ian Liu Rodrigues [Sat, 13 Sep 2014 14:20:22 +0000 (11:20 -0300)] 
Makefile: fix some typos in the preamble

Signed-off-by: Ian Liu Rodrigues <ian.liu88@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agobuiltin/log.c: mark strings for translation
Matthias Ruester [Sun, 14 Sep 2014 22:07:10 +0000 (00:07 +0200)] 
builtin/log.c: mark strings for translation

Signed-off-by: Matthias Ruester <matthias.ruester@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agorerere.h: mark string for translation
Matthias Ruester [Sun, 14 Sep 2014 22:40:53 +0000 (00:40 +0200)] 
rerere.h: mark string for translation

Signed-off-by: Matthias Ruester <matthias.ruester@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agogit-svn: delay term initialization
Eric Wong [Sun, 14 Sep 2014 07:38:29 +0000 (07:38 +0000)] 
git-svn: delay term initialization

On my Debian 7 system, this fixes annoying warnings when the output
of "git svn" commands are redirected:

    Unable to get Terminal Size. The TIOCGWINSZ ioctl didn't work.
    The COLUMNS and LINES environment variables didn't work. The
    resize program didn't work.

Signed-off-by: Eric Wong <normalperson@yhbt.net>
9 years agogit svn: find-rev allows short switches for near matches
Eric Wong [Sun, 7 Sep 2014 08:35:19 +0000 (08:35 +0000)] 
git svn: find-rev allows short switches for near matches

Allow -B and -A to act as short aliases for --before and --after
options respectively.  This reduces typing and hopefully allows
reuse of muscle memory for grep(1) users.

Signed-off-by: Eric Wong <normalperson@yhbt.net>
9 years agogit-svn.txt: Remove mentions of repack options
Lawrence Velázquez [Fri, 5 Sep 2014 03:46:25 +0000 (23:46 -0400)] 
git-svn.txt: Remove mentions of repack options

Git no longer seems to use these flags or their associated config keys;
when they are present, git-svn outputs a message indicating that they
are being ignored.

Signed-off-by: Lawrence Velázquez <vq@larryv.me>
Signed-off-by: Eric Wong <normalperson@yhbt.net>
9 years agogit svn: info: correctly handle absolute path args
Eric Wong [Sun, 3 Aug 2014 01:44:08 +0000 (01:44 +0000)] 
git svn: info: correctly handle absolute path args

Calling "git svn info $(pwd)" would hit:
  "Reading from filehandle failed at ..."
errors due to improper prefixing and canonicalization.

Strip the toplevel path from absolute filesystem paths to ensure
downstream canonicalization routines are only exposed to paths
tracked in git (or SVN).

v2:
  Thanks to Andrej Manduch for originally noticing the issue
  and fixing my original version of this to handle
  more corner cases such as "/path/to/top/../top" and
  "/path/to/top/../top/file" as shown in the new test cases.

v3:
  Fix pathname portability problems pointed out by Johannes Sixt
  with a hint from brian m. carlson.

Cc: Johannes Sixt <j6t@kdbg.org>
Cc: "brian m. carlson" <sandals@crustytoothpaste.net>
Signed-off-by: Andrej Manduch <amanduch@gmail.com>
Signed-off-by: Eric Wong <normalperson@yhbt.net>
9 years agogit-svn: branch: avoid systematic prompt for cert/pass
Monard Vong [Thu, 24 Jul 2014 16:25:59 +0000 (18:25 +0200)] 
git-svn: branch: avoid systematic prompt for cert/pass

Commands such as "git svn init/fetch/dcommit" do not prompt for client
certificate/password if they are stored in SVN config file.  Make
"git svn branch" consistent with the other commands, as SVN::Client is
capable of building its own authentication baton from information in the
SVN config directory.

Signed-off-by: Monard Vong <travelingsoul86@gmail.com>
Signed-off-by: Eric Wong <normalperson@yhbt.net>
9 years agot9300: use test_cmp_bin instead of test_cmp to compare binary files
Johannes Sixt [Fri, 12 Sep 2014 19:47:34 +0000 (21:47 +0200)] 
t9300: use test_cmp_bin instead of test_cmp to compare binary files

test_cmp is intended to produce diff output for human consumption. The
input in one instance in t9300-fast-import.sh are binary files, however.
Use test_cmp_bin to compare the files.

This was noticed because on Windows we have a special implementation of
test_cmp in pure bash code (to ignore differences due to intermittent CR
in actual output), and bash runs into an infinite loop due to the binary
nature of the input.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agorefs: speed up is_refname_available
Jeff King [Wed, 10 Sep 2014 11:11:55 +0000 (07:11 -0400)] 
refs: speed up is_refname_available

Our filesystem ref storage does not allow D/F conflicts; so
if "refs/heads/a/b" exists, we do not allow "refs/heads/a"
to exist (and vice versa). This falls out naturally for
loose refs, where the filesystem enforces the condition. But
for packed-refs, we have to make the check ourselves.

We do so by iterating over the entire packed-refs namespace
and checking whether each name creates a conflict. If you
have a very large number of refs, this is quite inefficient,
as you end up doing a large number of comparisons with
uninteresting bits of the ref tree (e.g., we know that all
of "refs/tags" is uninteresting in the example above, yet we
check each entry in it).

Instead, let's take advantage of the fact that we have the
packed refs stored as a trie of ref_entry structs. We can
find each component of the proposed refname as we walk
through the trie, checking for D/F conflicts as we go. For a
refname of depth N (i.e., 4 in the above example), we only
have to visit N nodes. And at each visit, we can binary
search the M names at that level, for a total complexity of
O(N lg M). ("M" is different at each level, of course, but
we can take the worst-case "M" as a bound).

In a pathological case of fetching 30,000 fresh refs into a
repository with 8.5 million refs, this dropped the time to
run "git fetch" from tens of minutes to ~30s.

This may also help smaller cases in which we check against
loose refs (which we do when renaming a ref), as we may
avoid a disk access for unrelated loose directories.

Note that the tests we add appear at first glance to be
redundant with what is already in t3210. However, the early
tests are not robust; they are run with reflogs turned on,
meaning that we are not actually testing
is_refname_available at all! The operations will still fail
because the reflogs will hit D/F conflicts in the
filesystem. To get a true test, we must turn off reflogs
(but we don't want to do so for the entire script, because
the point of turning them on was to cover some other cases).

Reviewed-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agoMake sure that index-pack --strict checks tag objects
Johannes Schindelin [Fri, 12 Sep 2014 08:08:16 +0000 (10:08 +0200)] 
Make sure that index-pack --strict checks tag objects

One of the most important use cases for the strict tag object checking
is when transfer.fsckobjects is set to true to catch invalid objects
early on. This new regression test essentially tests the same code path
by directly calling 'index-pack --strict' on a pack containing an
tag object without a 'tagger' line.

Technically, this test is not enough: it only exercises a code path that
*warns*, not one that *fails*. The reason is that hash-object and
pack-objects both insist on parsing the tag objects and would fail on
invalid tag objects at this time.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agofsck: return non-zero status on missing ref tips
Jeff King [Fri, 12 Sep 2014 03:38:30 +0000 (23:38 -0400)] 
fsck: return non-zero status on missing ref tips

Fsck tries hard to detect missing objects, and will complain
(and exit non-zero) about any inter-object links that are
missing. However, it will not exit non-zero for any missing
ref tips, meaning that a severely broken repository may
still pass "git fsck && echo ok".

The problem is that we use for_each_ref to iterate over the
ref tips, which hides broken tips. It does at least print an
error from the refs.c code, but fsck does not ever see the
ref and cannot note the problem in its exit code. We can solve
this by using for_each_rawref and noting the error ourselves.

In addition to adding tests for this case, we add tests for
all types of missing-object links (all of which worked, but
which we were not testing).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agoconfig: avoid a funny sentinel value "a^"
Jeff King [Tue, 19 Aug 2014 06:20:00 +0000 (02:20 -0400)] 
config: avoid a funny sentinel value "a^"

Introduce CONFIG_REGEX_NONE as a more explicit sentinel value to say
"we do not want to replace any existing entry" and use it in the
implementation of "git config --add".

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agopre-push.sample: Write error message to stderr
W. Trevor King [Thu, 11 Sep 2014 20:35:30 +0000 (13:35 -0700)] 
pre-push.sample: Write error message to stderr

githooks(5) suggests:

  Information about why the push is rejected may be sent to the user
  by writing to standard error.

So follow that advice in the sample.

Signed-off-by: W. Trevor King <wking@tremily.us>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agoAdd regression tests for stricter tag fsck'ing
Johannes Schindelin [Thu, 11 Sep 2014 14:26:41 +0000 (16:26 +0200)] 
Add regression tests for stricter tag fsck'ing

The intent of the new test case is to catch general breakages in
the fsck_tag() function, not so much to test it extensively, trying to
strike the proper balance between thoroughness and speed.

While it *would* have been nice to test the code path where fsck_object()
encounters an invalid tag object, this is not possible using git fsck: tag
objects are parsed already before fsck'ing (and the parser already fails
upon such objects).

Even worse: we would not even be able write out invalid tag objects
because git hash-object parses those objects, too, unless we resorted to
really ugly hacks such as using something like this in the unit tests
(essentially depending on Perl *and* Compress::Zlib):

hash_invalid_object () {
contents="$(printf '%s %d\0%s' "$1" ${#2} "$2")" &&
sha1=$(echo "$contents" | test-sha1) &&
suffix=${sha1#??} &&
mkdir -p .git/objects/${sha1%$suffix} &&
echo "$contents" |
perl -MCompress::Zlib -e 'undef $/; print compress(<>)' \
> .git/objects/${sha1%$suffix}/$suffix &&
echo $sha1
}

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agoUpdate draft release notes to 2.2
Junio C Hamano [Thu, 11 Sep 2014 18:19:47 +0000 (11:19 -0700)] 
Update draft release notes to 2.2

Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agofsck: check tag objects' headers
Johannes Schindelin [Thu, 11 Sep 2014 14:26:38 +0000 (16:26 +0200)] 
fsck: check tag objects' headers

We inspect commit objects pretty much in detail in git-fsck, but we just
glanced over the tag objects. Let's be stricter.

Since we do not want to limit 'tag' lines unduly, values that would fail
the refname check only result in warnings, not errors.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agoMake sure fsck_commit_buffer() does not run out of the buffer
Johannes Schindelin [Thu, 11 Sep 2014 14:26:33 +0000 (16:26 +0200)] 
Make sure fsck_commit_buffer() does not run out of the buffer

So far, we assumed that the buffer is NUL terminated, but this is not
a safe assumption, now that we opened the fsck_object() API to pass a
buffer directly.

So let's make sure that there is at least an empty line in the buffer.
That way, our checks would fail if the empty line was encountered
prematurely, and consequently we can get away with the current string
comparisons even with non-NUL-terminated buffers are passed to
fsck_object().

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agoDocumentation: use single-parameter --cacheinfo in example
Steffen Prohaska [Thu, 11 Sep 2014 15:19:51 +0000 (17:19 +0200)] 
Documentation: use single-parameter --cacheinfo in example

The single-parameter form is described as the preferred way.  Separate
arguments are only supported for backward compatibility.  Update the
example to the recommended form.

Signed-off-by: Steffen Prohaska <prohaska@zib.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agoMerge branch 'br/imap-send-simplify-tunnel-child-process'
Junio C Hamano [Thu, 11 Sep 2014 17:33:37 +0000 (10:33 -0700)] 
Merge branch 'br/imap-send-simplify-tunnel-child-process'

Code clean-up.

* br/imap-send-simplify-tunnel-child-process:
  imap-send: simplify v_issue_imap_cmd() and get_cmd_result() using starts_with()
  imap-send.c: imap_folder -> imap_server_conf.folder
  git-imap-send: simplify tunnel construction

9 years agoMerge branch 'jk/name-decoration-alloc'
Junio C Hamano [Thu, 11 Sep 2014 17:33:36 +0000 (10:33 -0700)] 
Merge branch 'jk/name-decoration-alloc'

The API to allocate the structure to keep track of commit
decoration was cumbersome to use, inviting lazy code to
overallocate memory.

* jk/name-decoration-alloc:
  log-tree: use FLEX_ARRAY in name_decoration
  log-tree: make name_decoration hash static
  log-tree: make add_name_decoration a public function

9 years agoMerge branch 'jn/unpack-trees-checkout-m-carry-deletion'
Junio C Hamano [Thu, 11 Sep 2014 17:33:35 +0000 (10:33 -0700)] 
Merge branch 'jn/unpack-trees-checkout-m-carry-deletion'

"git checkout -m" did not switch to another branch while carrying
the local changes forward when a path was deleted from the index.

* jn/unpack-trees-checkout-m-carry-deletion:
  checkout -m: attempt merge when deletion of path was staged
  unpack-trees: use 'cuddled' style for if-else cascade
  unpack-trees: simplify 'all other failures' case

9 years agoMerge branch 'rs/list-optim'
Junio C Hamano [Thu, 11 Sep 2014 17:33:35 +0000 (10:33 -0700)] 
Merge branch 'rs/list-optim'

Fix a couple of "accumulate into a sorted list" to "accumulate and
then sort the list".

* rs/list-optim:
  walker: avoid quadratic list insertion in mark_complete
  sha1_name: avoid quadratic list insertion in handle_one_ref

9 years agoMerge branch 'jk/fast-import-fixes'
Junio C Hamano [Thu, 11 Sep 2014 17:33:34 +0000 (10:33 -0700)] 
Merge branch 'jk/fast-import-fixes'

With sufficiently long refnames, fast-import could have overflown
an on-stack buffer.

* jk/fast-import-fixes:
  fast-import: fix buffer overflow in dump_tags
  fast-import: clean up pack_data pointer in end_packfile

9 years agoMerge branch 'jk/prune-top-level-refs-after-packing'
Junio C Hamano [Thu, 11 Sep 2014 17:33:33 +0000 (10:33 -0700)] 
Merge branch 'jk/prune-top-level-refs-after-packing'

After "pack-refs --prune" packed refs at the top-level, it failed
to prune them.

* jk/prune-top-level-refs-after-packing:
  pack-refs: prune top-level refs like "refs/foo"

9 years agoMerge branch 'nd/large-blobs'
Junio C Hamano [Thu, 11 Sep 2014 17:33:32 +0000 (10:33 -0700)] 
Merge branch 'nd/large-blobs'

Teach a few codepaths to punt (instead of dying) when large blobs
that would not fit in core are involved in the operation.

* nd/large-blobs:
  diff: shortcut for diff'ing two binary SHA-1 objects
  diff --stat: mark any file larger than core.bigfilethreshold binary
  diff.c: allow to pass more flags to diff_populate_filespec
  sha1_file.c: do not die failing to malloc in unpack_compressed_entry
  wrapper.c: introduce gentle xmallocz that does not die()

9 years agoMerge branch 'nd/fetch-pass-quiet-to-gc-child-process'
Junio C Hamano [Thu, 11 Sep 2014 17:33:32 +0000 (10:33 -0700)] 
Merge branch 'nd/fetch-pass-quiet-to-gc-child-process'

Progress output from "git gc --auto" was visible in "git fetch -q".

* nd/fetch-pass-quiet-to-gc-child-process:
  fetch: silence git-gc if --quiet is given
  fetch: convert argv_gc_auto to struct argv_array

9 years agoMerge branch 'dt/cache-tree-repair'
Junio C Hamano [Thu, 11 Sep 2014 17:33:32 +0000 (10:33 -0700)] 
Merge branch 'dt/cache-tree-repair'

Add a few more places in "commit" and "checkout" that make sure
that the cache-tree is fully populated in the index.

* dt/cache-tree-repair:
  cache-tree: do not try to use an invalidated subtree info to build a tree
  cache-tree: Write updated cache-tree after commit
  cache-tree: subdirectory tests
  test-dump-cache-tree: invalid trees are not errors
  cache-tree: create/update cache-tree on checkout

9 years agoMerge branch 'rs/ref-transaction-1'
Junio C Hamano [Thu, 11 Sep 2014 17:33:30 +0000 (10:33 -0700)] 
Merge branch 'rs/ref-transaction-1'

The second batch of the transactional ref update series.

* rs/ref-transaction-1: (22 commits)
  update-ref --stdin: pass transaction around explicitly
  update-ref --stdin: narrow scope of err strbuf
  refs.c: make delete_ref use a transaction
  refs.c: make prune_ref use a transaction to delete the ref
  refs.c: remove lock_ref_sha1
  refs.c: remove the update_ref_write function
  refs.c: remove the update_ref_lock function
  refs.c: make lock_ref_sha1 static
  walker.c: use ref transaction for ref updates
  fast-import.c: use a ref transaction when dumping tags
  receive-pack.c: use a reference transaction for updating the refs
  refs.c: change update_ref to use a transaction
  branch.c: use ref transaction for all ref updates
  fast-import.c: change update_branch to use ref transactions
  sequencer.c: use ref transactions for all ref updates
  commit.c: use ref transactions for updates
  replace.c: use the ref transaction functions for updates
  tag.c: use ref transactions when doing updates
  refs.c: add transaction.status and track OPEN/CLOSED
  refs.c: make ref_transaction_begin take an err argument
  ...

9 years agoMerge branch 'nd/mv-code-cleaning'
Junio C Hamano [Thu, 11 Sep 2014 17:33:30 +0000 (10:33 -0700)] 
Merge branch 'nd/mv-code-cleaning'

Code clean-up.

* nd/mv-code-cleaning:
  mv: no SP between function name and the first opening parenthese
  mv: combine two if(s)
  mv: unindent one level for directory move code
  mv: move index search code out
  mv: remove an "if" that's always true
  mv: split submodule move preparation code out
  mv: flatten error handling code block
  mv: mark strings for translations

9 years agoMerge branch 'mm/discourage-commit-a-to-finish-conflict-resolution'
Junio C Hamano [Thu, 11 Sep 2014 17:33:29 +0000 (10:33 -0700)] 
Merge branch 'mm/discourage-commit-a-to-finish-conflict-resolution'

* mm/discourage-commit-a-to-finish-conflict-resolution:
  merge, pull: stop advising 'commit -a' in case of conflict

9 years agoMerge branch 'jk/make-simplify-dependencies'
Junio C Hamano [Thu, 11 Sep 2014 17:33:29 +0000 (10:33 -0700)] 
Merge branch 'jk/make-simplify-dependencies'

Admit that keeping LIB_H up-to-date, only for those that do not use
the automatically generated dependencies, is a losing battle, and
make it conservative by making everything depend on anything.

* jk/make-simplify-dependencies:
  Makefile: drop CHECK_HEADER_DEPENDENCIES code
  Makefile: use `find` to determine static header dependencies
  i18n: treat "make pot" as an explicitly-invoked target

9 years agoMerge branch 'et/spell-poll-infinite-with-minus-one-only'
Junio C Hamano [Thu, 11 Sep 2014 17:33:28 +0000 (10:33 -0700)] 
Merge branch 'et/spell-poll-infinite-with-minus-one-only'

We used to pass -1000 to poll(2), expecting it to also mean "no
timeout", which should be spelled as -1.

* et/spell-poll-infinite-with-minus-one-only:
  upload-pack: keep poll(2)'s timeout to -1

9 years agoMerge branch 'br/http-init-fix'
Junio C Hamano [Thu, 11 Sep 2014 17:33:27 +0000 (10:33 -0700)] 
Merge branch 'br/http-init-fix'

Code clean-up.

* br/http-init-fix:
  http: style fixes for curl_multi_init error check
  http.c: die if curl_*_init fails

9 years agoMerge branch 'rs/child-process-init'
Junio C Hamano [Thu, 11 Sep 2014 17:33:27 +0000 (10:33 -0700)] 
Merge branch 'rs/child-process-init'

Code clean-up.

* rs/child-process-init:
  run-command: inline prepare_run_command_v_opt()
  run-command: call run_command_v_opt_cd_env() instead of duplicating it
  run-command: introduce child_process_init()
  run-command: introduce CHILD_PROCESS_INIT

9 years agoMerge branch 'jk/contrib-subtree-make-all'
Junio C Hamano [Thu, 11 Sep 2014 17:33:26 +0000 (10:33 -0700)] 
Merge branch 'jk/contrib-subtree-make-all'

* jk/contrib-subtree-make-all:
  subtree: make "all" default target of Makefile

9 years agoMerge branch 'ta/config-set-2'
Junio C Hamano [Thu, 11 Sep 2014 17:33:26 +0000 (10:33 -0700)] 
Merge branch 'ta/config-set-2'

Update git_config() users with callback functions for a very narrow
scope with calls to config-set API that lets us query a single
variable.

* ta/config-set-2:
  builtin/apply.c: replace `git_config()` with `git_config_get_string_const()`
  merge-recursive.c: replace `git_config()` with `git_config_get_int()`
  ll-merge.c: refactor `read_merge_config()` to use `git_config_string()`
  fast-import.c: replace `git_config()` with `git_config_get_*()` family
  branch.c: replace `git_config()` with `git_config_get_string()
  alias.c: replace `git_config()` with `git_config_get_string()`
  imap-send.c: replace `git_config()` with `git_config_get_*()` family
  pager.c: replace `git_config()` with `git_config_get_value()`
  builtin/gc.c: replace `git_config()` with `git_config_get_*()` family
  rerere.c: replace `git_config()` with `git_config_get_*()` family
  fetchpack.c: replace `git_config()` with `git_config_get_*()` family
  archive.c: replace `git_config()` with `git_config_get_bool()` family
  read-cache.c: replace `git_config()` with `git_config_get_*()` family
  http-backend.c: replace `git_config()` with `git_config_get_bool()` family
  daemon.c: replace `git_config()` with `git_config_get_bool()` family

9 years agoMerge branch 'ta/config-set-1'
Junio C Hamano [Thu, 11 Sep 2014 17:33:25 +0000 (10:33 -0700)] 
Merge branch 'ta/config-set-1'

Use the new caching config-set API in git_config() calls.

* ta/config-set-1:
  add tests for `git_config_get_string_const()`
  add a test for semantic errors in config files
  rewrite git_config() to use the config-set API
  config: add `git_die_config()` to the config-set API
  change `git_config()` return value to void
  add line number and file name info to `config_set`
  config.c: fix accuracy of line number in errors
  config.c: mark error and warnings strings for translation

9 years agofsck_object(): allow passing object data separately from the object itself
Johannes Schindelin [Wed, 10 Sep 2014 13:52:51 +0000 (15:52 +0200)] 
fsck_object(): allow passing object data separately from the object itself

When fsck'ing an incoming pack, we need to fsck objects that cannot be
read via read_sha1_file() because they are not local yet (and might even
be rejected if transfer.fsckobjects is set to 'true').

For commits, there is a hack in place: we basically cache commit
objects' buffers anyway, but the same is not true, say, for tag objects.

By refactoring fsck_object() to take the object buffer and size as
optional arguments -- optional, because we still fall back to the
previous method to look at the cached commit objects if the caller
passes NULL -- we prepare the machinery for the upcoming handling of tag
objects.

The assumption that such buffers are inherently NUL terminated is now
wrong, of course, hence we pass the size of the buffer so that we can
add a sanity check later, to prevent running past the end of the buffer.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agoRefactor type_from_string() to allow continuing after detecting an error
Johannes Schindelin [Wed, 10 Sep 2014 13:52:44 +0000 (15:52 +0200)] 
Refactor type_from_string() to allow continuing after detecting an error

In the next commits, we will enhance the fsck_tag() function to check
tag objects more thoroughly. To this end, we need a function to verify
that a given string is a valid object type, but that does not die() in
the negative case.

While at it, prepare type_from_string() for counted strings, i.e. strings
with an explicitly specified length rather than a NUL termination.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agorefs: write packed_refs file using stdio
Jeff King [Wed, 10 Sep 2014 10:03:52 +0000 (06:03 -0400)] 
refs: write packed_refs file using stdio

We write each line of a new packed-refs file individually
using a write() syscall (and sometimes 2, if the ref is
peeled). Since each line is only about 50-100 bytes long,
this creates a lot of system call overhead.

We can instead open a stdio handle around our descriptor and
use fprintf to write to it. The extra buffering is not a
problem for us, because nobody will read our new packed-refs
file until we call commit_lock_file (by which point we have
flushed everything).

On a pathological repository with 8.5 million refs, this
dropped the time to run `git pack-refs` from 20s to 6s.

Signed-off-by: Jeff King <peff@peff.net>
Reviewed-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agofsck: exit with non-zero status upon error from fsck_obj()
Jeff King [Fri, 29 Aug 2014 20:31:46 +0000 (16:31 -0400)] 
fsck: exit with non-zero status upon error from fsck_obj()

Upon finding a corrupt loose object, we forgot to note the error to
signal it with the exit status of the entire process.

[jc: adjusted t1450 and added another test]

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agoUpdate draft release notes to 2.2
Junio C Hamano [Tue, 9 Sep 2014 20:06:26 +0000 (13:06 -0700)] 
Update draft release notes to 2.2

Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years agoMerge branch 'sp/pack-protocol-doc-on-shallow'
Junio C Hamano [Tue, 9 Sep 2014 19:54:09 +0000 (12:54 -0700)] 
Merge branch 'sp/pack-protocol-doc-on-shallow'

* sp/pack-protocol-doc-on-shallow:
  Document LF appearing in shallow command during send-pack/receive-pack

9 years agoMerge branch 'tf/imap-send-create'
Junio C Hamano [Tue, 9 Sep 2014 19:54:08 +0000 (12:54 -0700)] 
Merge branch 'tf/imap-send-create'

* tf/imap-send-create:
  imap-send: create target mailbox if it is missing
  imap-send: clarify CRAM-MD5 vs LOGIN documentation

9 years agoMerge branch 'jk/prompt-stash-could-be-packed'
Junio C Hamano [Tue, 9 Sep 2014 19:54:08 +0000 (12:54 -0700)] 
Merge branch 'jk/prompt-stash-could-be-packed'

The prompt script checked $GIT_DIR/ref/stash file to see if there
is a stash, which was a no-no.

* jk/prompt-stash-could-be-packed:
  git-prompt: do not look for refs/stash in $GIT_DIR

9 years agoMerge branch 'tb/pretty-format-cd-date-format'
Junio C Hamano [Tue, 9 Sep 2014 19:54:07 +0000 (12:54 -0700)] 
Merge branch 'tb/pretty-format-cd-date-format'

Documentation update.

* tb/pretty-format-cd-date-format:
  pretty: note that %cd respects the --date= option

9 years agoMerge branch 'rs/inline-compat-path-macros'
Junio C Hamano [Tue, 9 Sep 2014 19:54:07 +0000 (12:54 -0700)] 
Merge branch 'rs/inline-compat-path-macros'

* rs/inline-compat-path-macros:
  turn path macros into inline function

9 years agoMerge branch 'rs/clean-menu-item-defn'
Junio C Hamano [Tue, 9 Sep 2014 19:54:06 +0000 (12:54 -0700)] 
Merge branch 'rs/clean-menu-item-defn'

* rs/clean-menu-item-defn:
  clean: use f(void) instead of f() to declare a pointer to a function without arguments

9 years agoMerge branch 'jc/config-mak-document-darwin-vs-macosx'
Junio C Hamano [Tue, 9 Sep 2014 19:54:05 +0000 (12:54 -0700)] 
Merge branch 'jc/config-mak-document-darwin-vs-macosx'

* jc/config-mak-document-darwin-vs-macosx:
  config.mak.uname: add hint on uname_R for MacOS X
  config.mak.uname: set NO_APPLE_COMMON_CRYPTO on older systems