Commit Graph

39280 Commits

Author SHA1 Message Date
Junio C Hamano
63296d583c Merge branch 'jc/refer-to-t-readme-from-submitting-patches'
* jc/refer-to-t-readme-from-submitting-patches:
  t/README: justify why "! grep foo" is sufficient
  SubmittingPatches: refer to t/README for tests
2014-12-22 12:26:38 -08:00
Junio C Hamano
168ab99d4c Merge branch 'tb/config-core-filemode-check-on-broken-fs'
Some filesystems assign filemodes in a strange way, fooling then
automatic "filemode trustability" check done during a new
repository creation.

* tb/config-core-filemode-check-on-broken-fs:
  init-db: improve the filemode trustability check
2014-12-22 12:26:34 -08:00
Junio C Hamano
0178207021 Merge branch 'mg/add-ignore-errors'
"git add --ignore-errors ..." did not ignore an error to
give a file that did not exist.

* mg/add-ignore-errors:
  add: ignore only ignored files
2014-12-22 12:26:30 -08:00
Junio C Hamano
3cdb0cb610 Merge branch 'jk/lock-ref-sha1-basic-return-errors'
Correct an API anomaly.

* jk/lock-ref-sha1-basic-return-errors:
  lock_ref_sha1_basic: do not die on locking errors
2014-12-22 12:26:27 -08:00
Junio C Hamano
0ed8a4e161 Merge branch 'cc/interpret-trailers-more'
"git interpret-trailers" learned to properly handle the
"Conflicts:" block at the end.

* cc/interpret-trailers-more:
  trailer: add test with an old style conflict block
  trailer: reuse ignore_non_trailer() to ignore conflict lines
  commit: make ignore_non_trailer() non static
  merge & sequencer: turn "Conflicts:" hint into a comment
  builtin/commit.c: extract ignore_non_trailer() helper function
  merge & sequencer: unify codepaths that write "Conflicts:" hint
  builtin/merge.c: drop a parameter that is never used
2014-12-22 12:26:24 -08:00
Junio C Hamano
c2e8e4b9da Prepare for 2.2.2
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22 12:20:38 -08:00
Junio C Hamano
57815a4f56 Merge branch 'jk/rebuild-perl-scripts-with-no-perl-seting-change' into maint
The build procedure did not bother fixing perl and python scripts
when NO_PERL and NO_PYTHON build-time configuration changed.

* jk/rebuild-perl-scripts-with-no-perl-seting-change:
  Makefile: have python scripts depend on NO_PYTHON setting
  Makefile: simplify by using SCRIPT_{PERL,SH}_GEN macros
  Makefile: have perl scripts depend on NO_PERL setting
2014-12-22 12:18:35 -08:00
Junio C Hamano
7d37ed1382 Merge branch 'jk/no-perl-tests' into maint
Some tests that depend on perl lacked PERL prerequisite to protect
them, breaking build with NO_PERL configuration.

* jk/no-perl-tests:
  t960[34]: mark cvsimport tests as requiring perl
  t0090: mark add-interactive test with PERL prerequisite
2014-12-22 12:18:26 -08:00
Junio C Hamano
ebae81e96d Merge branch 'po/everyday-doc' into maint
"Everyday" document had a broken link.

* po/everyday-doc:
  Documentation: change "gitlink" typo in git-push
2014-12-22 12:18:17 -08:00
Junio C Hamano
0eeb9b86d6 Merge branch 'jk/push-simple' into maint
Git 2.0 was supposed to make the "simple" mode for the default of
"git push", but it didn't.

* jk/push-simple:
  push: truly use "simple" as default, not "upstream"
2014-12-22 12:18:08 -08:00
Junio C Hamano
e524fb497a Merge branch 'mh/config-flip-xbit-back-after-checking' into maint
"git init" (hence "git clone") initialized the per-repository
configuration file .git/config with x-bit by mistake.

* mh/config-flip-xbit-back-after-checking:
  create_default_files(): don't set u+x bit on $GIT_DIR/config
2014-12-22 12:18:00 -08:00
Junio C Hamano
0b5c641490 Merge branch 'jk/gitweb-with-newer-cgi-multi-param' into maint
"gitweb" used to depend on a behaviour that was deprecated by recent
CGI.pm.

* jk/gitweb-with-newer-cgi-multi-param:
  gitweb: hack around CGI's list-context param() handling
2014-12-22 12:17:34 -08:00
Junio C Hamano
8d5134399c Merge branch 'rs/receive-pack-use-labs' into maint
* rs/receive-pack-use-labs:
  use labs() for variables of type long instead of abs()
2014-12-22 12:17:32 -08:00
Junio C Hamano
e8c2351157 Merge branch 'rs/maint-config-use-labs' into maint
* rs/maint-config-use-labs:
  use labs() for variables of type long instead of abs()
2014-12-22 12:17:23 -08:00
Junio C Hamano
8390d5cda9 Merge branch 'js/windows-open-eisdir-error' into maint
open() emulated on Windows platforms did not give EISDIR upon an
attempt to open a directory for writing.

* js/windows-open-eisdir-error:
  Windows: correct detection of EISDIR in mingw_open()
2014-12-22 12:17:13 -08:00
Junio C Hamano
5d509d5e1c Merge branch 'jk/colors-fix' into maint
"git config --get-color" did not parse its command line arguments
carefully.

* jk/colors-fix:
  t4026: test "normal" color
  config: fix parsing of "git config --get-color some.key -1"
  docs: describe ANSI 256-color mode
2014-12-22 12:16:58 -08:00
Junio C Hamano
447c39a9b2 Merge branch 'jk/checkout-from-tree' into maint
"git checkout $treeish $path", when $path in the index and the
working tree already matched what is in $treeish at the $path,
still overwrote the $path unnecessarily.

* jk/checkout-from-tree:
  checkout $tree: do not throw away unchanged index entries
2014-12-22 12:16:30 -08:00
brian m. carlson
8297643fcd Documentation: add missing article in rev-list-options.txt
Add the missing article "a".

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22 12:08:46 -08:00
Tony Finch
eb443e3b39 git-prompt: preserve value of $? inside shell prompt
If you have a prompt which displays the command exit status,
__git_ps1 without this change corrupts it, although it has
the correct value in the parent shell:

	~/src/git (master) 0 $ set | grep ^PS1
	PS1='\w$(__git_ps1) $? \$ '
	~/src/git (master) 0 $ false
	~/src/git (master) 0 $ echo $?
	1
	~/src/git (master) 0 $

There is a slightly ugly workaround:

	~/src/git (master) 0 $ set | grep ^PS1
	PS1='\w$(x=$?; __git_ps1; exit $x) $? \$ '
	~/src/git (master) 0 $ false
	~/src/git (master) 1 $

This change makes the workaround unnecessary.

Signed-off-by: Tony Finch <dot@dotat.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22 11:58:56 -08:00
Jim Hill
3af74cfb15 pre-push.sample: remove unnecessary and misleading IFS=' '
The sample hook explicitly sets IFS to SP and nothing else so that
the "read" used in the per-ref while loop that iterates over
"<localref> SP <localsha1> SP <remoteref> SP <remotesha>" records,
where we know refs and sha1s will not have SPs, would split them
correctly.

While this is not wrong per-se, it is not necessary; because we know
these fields do not contain HT or LF, either, we can simply leave
IFS the default.

This will also prevent those who cut and paste from this sample from
getting bitten when they write things in the per-ref loop that need
splitting with the default $IFS (e.g. use $(git rev-list ...) to
produce one-record-per-line output).

Signed-off-by: Jim Hill <gjthill@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22 10:27:42 -08:00
Stefan Beller
c653e0343d refs.c: let fprintf handle the formatting
Instead of calculating whether to put a plus or minus sign, offload
the responsibilty to the fprintf function.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22 10:13:16 -08:00
Stefan Beller
3581d79335 refs.c: don't expose the internal struct ref_lock in the header file
Now the struct ref_lock is used completely internally, so let's
remove it from the header file.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22 10:13:15 -08:00
Michael Haggerty
31e07f76a9 lock_any_ref_for_update(): inline function
Inline the function at its one remaining caller (which is within
refs.c) and remove it.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22 10:13:15 -08:00
Ronnie Sahlberg
0b1e654801 refs.c: remove unlock_ref/close_ref/commit_ref from the refs api
unlock|close|commit_ref can be made static since there are no more external
callers.

Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22 10:13:15 -08:00
Michael Haggerty
fa5b1830b0 reflog_expire(): new function in the reference API
Move expire_reflog() into refs.c and rename it to reflog_expire().
Turn the three policy functions into function pointers that are passed
into reflog_expire(). Add function prototypes and documentation to
refs.h.

[jc: squashed in $gmane/261582, drop "extern" in function definition]

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Reviewed-by: Stefan Beller <sbeller@google.com>
Tweaked-by: Ramsay Jones
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22 10:11:40 -08:00
Beat Bolli
32c239d1fb update_unicode.sh: delete the command group
Now that the whole file is generated by one single command, the
command group is no longer needed.

Signed-off-by: Beat Bolli <dev+git@drbeat.li>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22 10:03:37 -08:00
Beat Bolli
1679acdbff update_unicode.sh: make the output structure visible
By using a here document instead of the echo/uniset sequence, the
final structure of the generated file becomes obvious.

Signed-off-by: Beat Bolli <dev+git@drbeat.li>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22 10:03:37 -08:00
Beat Bolli
3a77c2096d update_unicode.sh: shorten uniset invocation path
"uniset/uniset" is a relative path; there's no need to prefix it
with "./".

Signed-off-by: Beat Bolli <dev+git@drbeat.li>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22 10:03:24 -08:00
Beat Bolli
69d84a3b58 update_unicode.sh: set UNICODE_DIR only once
The value is the same on both uniset invocations, so "Don't Repeat
Yourself" applies.

Since this is done as the last command in the sequence, there's no
need to unset UNICODE_DIR at the end.

Signed-off-by: Beat Bolli <dev+git@drbeat.li>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22 10:02:46 -08:00
Beat Bolli
2aa590cb07 update_unicode.sh: simplify output capture
Instead of capturing the output of each echo and uniset invocation,
wrap the whole section in a group command and redirect its output
all at once.

Signed-off-by: Beat Bolli <dev+git@drbeat.li>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22 10:02:38 -08:00
Alexander Kuleshov
bef111d0a5 clean: typofix
Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22 09:57:42 -08:00
Stefan Beller
c376d96825 Documentation/SubmittingPatches: unify whitespace/tabs for the DCO
The Developers Certificate of Origin has a mixture of tabs and white
spaces which is annoying to view if your editor explicitly views white
space characters.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-22 09:56:25 -08:00
Junio C Hamano
3f1509809e Sync with v2.2.1
* maint:
  Git 2.2.1
  Git 2.1.4
  Git 2.0.5
  Git 1.9.5
  Git 1.8.5.6
  fsck: complain about NTFS ".git" aliases in trees
  read-cache: optionally disallow NTFS .git variants
  path: add is_ntfs_dotgit() helper
  fsck: complain about HFS+ ".git" aliases in trees
  read-cache: optionally disallow HFS+ .git variants
  utf8: add is_hfs_dotgit() helper
  fsck: notice .git case-insensitively
  t1450: refactor ".", "..", and ".git" fsck tests
  verify_dotfile(): reject .git case-insensitively
  read-tree: add tests for confusing paths like ".." and ".git"
  unpack-trees: propagate errors adding entries to the index
2014-12-18 12:30:53 -08:00
Eric Sunshine
b195aa00c1 git-compat-util: suppress unavoidable Apple-specific deprecation warnings
With the release of Mac OS X 10.7 in July 2011, Apple deprecated all
openssl.h functionality due to OpenSSL ABI (application binary
interface) instability, resulting in an explosion of compilation
warnings about deprecated SSL, SHA1, and X509 functions (among others).

61067954ce (cache.h: eliminate SHA-1 deprecation warnings on Mac OS X;
2013-05-19) and be4c828b76 (imap-send: eliminate HMAC deprecation
warnings on Mac OS X; 2013-05-19) attempted to ameliorate the situation
by taking advantage of drop-in replacement functionality provided by
Apple's (ABI-stable) CommonCrypto facility, however CommonCrypto
supplies only a subset of deprecated OpenSSL functionality, thus a host
of warnings remain.

Despite this shortcoming, it was hoped that Apple would ultimately
provide CommonCrypto replacements for all deprecated OpenSSL
functionality, and that the effort started by 61067954ce and be4c828b76
would be continued and eventually eliminate all deprecation warnings.
However, now 3.5 years later, and with Mac OS X at 10.10, the hoped-for
CommonCrypto replacements have not yet materialized, nor is there any
indication that they will be forthcoming.

These Apple-specific warnings are pure noise: they don't tell us
anything useful and we have no control over them, nor is Apple likely to
provide replacements any time soon. Such noise may obscure other
legitimate warnings, therefore silence them.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-18 11:01:30 -08:00
Junio C Hamano
9b7cbb3159 Git 2.2.1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-17 11:49:34 -08:00
Junio C Hamano
77933f4449 Sync with v2.1.4
* maint-2.1:
  Git 2.1.4
  Git 2.0.5
  Git 1.9.5
  Git 1.8.5.6
  fsck: complain about NTFS ".git" aliases in trees
  read-cache: optionally disallow NTFS .git variants
  path: add is_ntfs_dotgit() helper
  fsck: complain about HFS+ ".git" aliases in trees
  read-cache: optionally disallow HFS+ .git variants
  utf8: add is_hfs_dotgit() helper
  fsck: notice .git case-insensitively
  t1450: refactor ".", "..", and ".git" fsck tests
  verify_dotfile(): reject .git case-insensitively
  read-tree: add tests for confusing paths like ".." and ".git"
  unpack-trees: propagate errors adding entries to the index
2014-12-17 11:46:57 -08:00
Junio C Hamano
8e36a6d575 Git 2.1.4
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-17 11:44:59 -08:00
Junio C Hamano
58f1d950e3 Sync with v2.0.5
* maint-2.0:
  Git 2.0.5
  Git 1.9.5
  Git 1.8.5.6
  fsck: complain about NTFS ".git" aliases in trees
  read-cache: optionally disallow NTFS .git variants
  path: add is_ntfs_dotgit() helper
  fsck: complain about HFS+ ".git" aliases in trees
  read-cache: optionally disallow HFS+ .git variants
  utf8: add is_hfs_dotgit() helper
  fsck: notice .git case-insensitively
  t1450: refactor ".", "..", and ".git" fsck tests
  verify_dotfile(): reject .git case-insensitively
  read-tree: add tests for confusing paths like ".." and ".git"
  unpack-trees: propagate errors adding entries to the index
2014-12-17 11:42:28 -08:00
Junio C Hamano
9a8c2b67cd Git 2.0.5
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-17 11:30:46 -08:00
Junio C Hamano
5e519fb8b0 Sync with v1.9.5
* maint-1.9:
  Git 1.9.5
  Git 1.8.5.6
  fsck: complain about NTFS ".git" aliases in trees
  read-cache: optionally disallow NTFS .git variants
  path: add is_ntfs_dotgit() helper
  fsck: complain about HFS+ ".git" aliases in trees
  read-cache: optionally disallow HFS+ .git variants
  utf8: add is_hfs_dotgit() helper
  fsck: notice .git case-insensitively
  t1450: refactor ".", "..", and ".git" fsck tests
  verify_dotfile(): reject .git case-insensitively
  read-tree: add tests for confusing paths like ".." and ".git"
  unpack-trees: propagate errors adding entries to the index
2014-12-17 11:28:54 -08:00
Junio C Hamano
83332636f5 Git 1.9.5
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-17 11:22:32 -08:00
Junio C Hamano
6898b79721 Sync with v1.8.5.6
* maint-1.8.5:
  Git 1.8.5.6
  fsck: complain about NTFS ".git" aliases in trees
  read-cache: optionally disallow NTFS .git variants
  path: add is_ntfs_dotgit() helper
  fsck: complain about HFS+ ".git" aliases in trees
  read-cache: optionally disallow HFS+ .git variants
  utf8: add is_hfs_dotgit() helper
  fsck: notice .git case-insensitively
  t1450: refactor ".", "..", and ".git" fsck tests
  verify_dotfile(): reject .git case-insensitively
  read-tree: add tests for confusing paths like ".." and ".git"
  unpack-trees: propagate errors adding entries to the index
2014-12-17 11:20:31 -08:00
Junio C Hamano
5c8213a769 Git 1.8.5.6
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-17 11:18:45 -08:00
Junio C Hamano
2aa9100846 Merge branch 'dotgit-case-maint-1.8.5' into maint-1.8.5
* dotgit-case-maint-1.8.5:
  fsck: complain about NTFS ".git" aliases in trees
  read-cache: optionally disallow NTFS .git variants
  path: add is_ntfs_dotgit() helper
  fsck: complain about HFS+ ".git" aliases in trees
  read-cache: optionally disallow HFS+ .git variants
  utf8: add is_hfs_dotgit() helper
  fsck: notice .git case-insensitively
  t1450: refactor ".", "..", and ".git" fsck tests
  verify_dotfile(): reject .git case-insensitively
  read-tree: add tests for confusing paths like ".." and ".git"
  unpack-trees: propagate errors adding entries to the index
2014-12-17 11:11:15 -08:00
Johannes Schindelin
d08c13b947 fsck: complain about NTFS ".git" aliases in trees
Now that the index can block pathnames that can be mistaken
to mean ".git" on NTFS and FAT32, it would be helpful for
fsck to notice such problematic paths. This lets servers
which use receive.fsckObjects block them before the damage
spreads.

Note that the fsck check is always on, even for systems
without core.protectNTFS set. This is technically more
restrictive than we need to be, as a set of users on ext4
could happily use these odd filenames without caring about
NTFS.

However, on balance, it's helpful for all servers to block
these (because the paths can be used for mischief, and
servers which bother to fsck would want to stop the spread
whether they are on NTFS themselves or not), and hardly
anybody will be affected (because the blocked names are
variants of .git or git~1, meaning mischief is almost
certainly what the tree author had in mind).

Ideally these would be controlled by a separate
"fsck.protectNTFS" flag. However, it would be much nicer to
be able to enable/disable _any_ fsck flag individually, and
any scheme we choose should match such a system. Given the
likelihood of anybody using such a path in practice, it is
not unreasonable to wait until such a system materializes.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-17 11:04:45 -08:00
Johannes Schindelin
2b4c6efc82 read-cache: optionally disallow NTFS .git variants
The point of disallowing ".git" in the index is that we
would never want to accidentally overwrite files in the
repository directory. But this means we need to respect the
filesystem's idea of when two paths are equal. The prior
commit added a helper to make such a comparison for NTFS
and FAT32; let's use it in verify_path().

We make this check optional for two reasons:

  1. It restricts the set of allowable filenames, which is
     unnecessary for people who are not on NTFS nor FAT32.
     In practice this probably doesn't matter, though, as
     the restricted names are rather obscure and almost
     certainly would never come up in practice.

  2. It has a minor performance penalty for every path we
     insert into the index.

This patch ties the check to the core.protectNTFS config
option. Though this is expected to be most useful on Windows,
we allow it to be set everywhere, as NTFS may be mounted on
other platforms. The variable does default to on for Windows,
though.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-17 11:04:45 -08:00
Johannes Schindelin
1d1d69bc52 path: add is_ntfs_dotgit() helper
We do not allow paths with a ".git" component to be added to
the index, as that would mean repository contents could
overwrite our repository files. However, asking "is this
path the same as .git" is not as simple as strcmp() on some
filesystems.

On NTFS (and FAT32), there exist so-called "short names" for
backwards-compatibility: 8.3 compliant names that refer to the same files
as their long names. As ".git" is not an 8.3 compliant name, a short name
is generated automatically, typically "git~1".

Depending on the Windows version, any combination of trailing spaces and
periods are ignored, too, so that both "git~1." and ".git." still refer
to the Git directory. The reason is that 8.3 stores file names shorter
than 8 characters with trailing spaces. So literally, it does not matter
for the short name whether it is padded with spaces or whether it is
shorter than 8 characters, it is considered to be the exact same.

The period is the separator between file name and file extension, and
again, an empty extension consists just of spaces in 8.3 format. So
technically, we would need only take care of the equivalent of this
regex:
        (\.git {0,4}|git~1 {0,3})\. {0,3}

However, there are indications that at least some Windows versions might
be more lenient and accept arbitrary combinations of trailing spaces and
periods and strip them out. So we're playing it real safe here. Besides,
there can be little doubt about the intention behind using file names
matching even the more lenient pattern specified above, therefore we
should be fine with disallowing such patterns.

Extra care is taken to catch names such as '.\\.git\\booh' because the
backslash is marked as a directory separator only on Windows, and we want
to use this new helper function also in fsck on other platforms.

A big thank you goes to Ed Thomson and an unnamed Microsoft engineer for
the detailed analysis performed to come up with the corresponding fixes
for libgit2.

This commit adds a function to detect whether a given file name can refer
to the Git directory by mistake.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-17 11:04:45 -08:00
Jeff King
a18fcc9ff2 fsck: complain about HFS+ ".git" aliases in trees
Now that the index can block pathnames that case-fold to
".git" on HFS+, it would be helpful for fsck to notice such
problematic paths. This lets servers which use
receive.fsckObjects block them before the damage spreads.

Note that the fsck check is always on, even for systems
without core.protectHFS set. This is technically more
restrictive than we need to be, as a set of users on ext4
could happily use these odd filenames without caring about
HFS+.

However, on balance, it's helpful for all servers to block
these (because the paths can be used for mischief, and
servers which bother to fsck would want to stop the spread
whether they are on HFS+ themselves or not), and hardly
anybody will be affected (because the blocked names are
variants of .git with invisible Unicode code-points mixed
in, meaning mischief is almost certainly what the tree
author had in mind).

Ideally these would be controlled by a separate
"fsck.protectHFS" flag. However, it would be much nicer to
be able to enable/disable _any_ fsck flag individually, and
any scheme we choose should match such a system. Given the
likelihood of anybody using such a path in practice, it is
not unreasonable to wait until such a system materializes.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-17 11:04:45 -08:00
Jeff King
a42643aa8d read-cache: optionally disallow HFS+ .git variants
The point of disallowing ".git" in the index is that we
would never want to accidentally overwrite files in the
repository directory. But this means we need to respect the
filesystem's idea of when two paths are equal. The prior
commit added a helper to make such a comparison for HFS+;
let's use it in verify_path.

We make this check optional for two reasons:

  1. It restricts the set of allowable filenames, which is
     unnecessary for people who are not on HFS+. In practice
     this probably doesn't matter, though, as the restricted
     names are rather obscure and almost certainly would
     never come up in practice.

  2. It has a minor performance penalty for every path we
     insert into the index.

This patch ties the check to the core.protectHFS config
option. Though this is expected to be most useful on OS X,
we allow it to be set everywhere, as HFS+ may be mounted on
other platforms. The variable does default to on for OS X,
though.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-17 11:04:44 -08:00
Jeff King
6162a1d323 utf8: add is_hfs_dotgit() helper
We do not allow paths with a ".git" component to be added to
the index, as that would mean repository contents could
overwrite our repository files. However, asking "is this
path the same as .git" is not as simple as strcmp() on some
filesystems.

HFS+'s case-folding does more than just fold uppercase into
lowercase (which we already handle with strcasecmp). It may
also skip past certain "ignored" Unicode code points, so
that (for example) ".gi\u200ct" is mapped ot ".git".

The full list of folds can be found in the tables at:

  https://www.opensource.apple.com/source/xnu/xnu-1504.15.3/bsd/hfs/hfscommon/Unicode/UCStringCompareData.h

Implementing a full "is this path the same as that path"
comparison would require us importing the whole set of
tables.  However, what we want to do is much simpler: we
only care about checking ".git". We know that 'G' is the
only thing that folds to 'g', and so on, so we really only
need to deal with the set of ignored code points, which is
much smaller.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-17 11:04:39 -08:00