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2014-02-24dir.c: prepare match_pathspec_item for taking more flagsLibravatar Nguyễn Thái Ngọc Duy1-6/+13
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24pathspec: rename match_pathspec_depth() to match_pathspec()Libravatar Nguyễn Thái Ngọc Duy7-25/+27
A long time ago, for some reason I was not happy with match_pathspec(). I created a better version, match_pathspec_depth() that was suppose to replace match_pathspec() eventually. match_pathspec() has finally been gone since 6 months ago. Use the shorter name for match_pathspec_depth(). Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24pathspec: convert some match_pathspec_depth() to dir_path_match()Libravatar Nguyễn Thái Ngọc Duy5-8/+12
This helps reduce the number of match_pathspec_depth() call sites and show how m_p_d() is used. And it usage is: - match against an index entry (ce_path_match or match_pathspec_depth in ls-files) - match against a dir_entry from read_directory (dir_path_match and match_pathspec_depth in clean.c, which will be converted later) - resolve-undo (rerere.c and ls-files.c) Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24pathspec: convert some match_pathspec_depth() to ce_path_match()Libravatar Nguyễn Thái Ngọc Duy14-22/+24
This helps reduce the number of match_pathspec_depth() call sites and show how match_pathspec_depth() is used. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-27Merge branch 'nd/negative-pathspec'Libravatar Junio C Hamano2-1/+18
* nd/negative-pathspec: tree-walk.c: ignore trailing slash on submodule in tree_entry_interesting()
2014-01-27Merge branch 'pw/git-p4'Libravatar Junio C Hamano10-44/+342
Various "git p4" updates. * pw/git-p4: git p4 doc: use two-line style for options with multiple spellings git p4 test: examine behavior with locked (+l) files git p4: fix an error message when "p4 where" fails git p4: handle files with wildcards when doing RCS scrubbing git p4 test: do not pollute /tmp git p4 test: run as user "author" git p4 test: is_cli_file_writeable succeeds git p4 test: explicitly check p4 wildcard delete git p4: work around p4 bug that causes empty symlinks git p4 test: ensure p4 symlink parsing works git p4 test: wildcards are supported
2014-01-27Merge branch 'ss/safe-create-leading-dir-with-slash'Libravatar Junio C Hamano1-4/+8
"git clone $origin foo\bar\baz" on Windows failed to create the leading directories (i.e. a moral-equivalent of "mkdir -p"). * ss/safe-create-leading-dir-with-slash: safe_create_leading_directories(): on Windows, \ can separate path components
2014-01-27Merge branch 'mh/safe-create-leading-directories'Libravatar Junio C Hamano6-67/+155
Code clean-up and protection against concurrent write access to the ref namespace. * mh/safe-create-leading-directories: rename_tmp_log(): on SCLD_VANISHED, retry rename_tmp_log(): limit the number of remote_empty_directories() attempts rename_tmp_log(): handle a possible mkdir/rmdir race rename_ref(): extract function rename_tmp_log() remove_dir_recurse(): handle disappearing files and directories remove_dir_recurse(): tighten condition for removing unreadable dir lock_ref_sha1_basic(): if locking fails with ENOENT, retry lock_ref_sha1_basic(): on SCLD_VANISHED, retry safe_create_leading_directories(): add new error value SCLD_VANISHED cmd_init_db(): when creating directories, handle errors conservatively safe_create_leading_directories(): introduce enum for return values safe_create_leading_directories(): always restore slash at end of loop safe_create_leading_directories(): split on first of multiple slashes safe_create_leading_directories(): rename local variable safe_create_leading_directories(): add explicit "slash" pointer safe_create_leading_directories(): reduce scope of local variable safe_create_leading_directories(): fix format of "if" chaining
2014-01-27Merge branch 'tr/nth-previous-is-a-commit'Libravatar Junio C Hamano2-3/+3
* tr/nth-previous-is-a-commit: Documentation: @{-N} can refer to a commit
2014-01-27Merge branch 'tr/gitk-doc-range-trace'Libravatar Junio C Hamano1-0/+16
* tr/gitk-doc-range-trace: Documentation/gitk: document -L option
2014-01-27Merge branch 'jk/mark-edges-uninteresting'Libravatar Junio C Hamano2-9/+23
Fix performance regression in v1.8.4.x and later. * jk/mark-edges-uninteresting: list-objects: only look at cmdline trees with edge_hint t/perf: time rev-list with UNINTERESTING commits
2014-01-27Merge branch 'jk/diff-filespec-cleanup'Libravatar Junio C Hamano2-7/+5
* jk/diff-filespec-cleanup: diff_filespec: use only 2 bits for is_binary flag diff_filespec: reorder is_binary field diff_filespec: drop xfrm_flags field diff_filespec: drop funcname_pattern_ident field diff_filespec: reorder dirty_submodule macro definitions
2014-01-27Merge branch 'ef/mingw-write'Libravatar Junio C Hamano5-25/+4
* ef/mingw-write: mingw: remove mingw_write prefer xwrite instead of write
2014-01-27Merge branch 'rk/send-email-ssl-cert'Libravatar Junio C Hamano1-1/+2
The "if /etc/ssl/certs/ directory exists, explicitly telling the library to use it as SSL_ca_path" blind-defaulting in "git send-email" broke platforms where /etc/ssl/certs/ directory exists, but it cannot used as SSL_ca_path (e.g. Fedora rawhide). Fix it by not specifying any SSL_ca_path/SSL_ca_file but still asking for peer verification in such a case. * rk/send-email-ssl-cert: send-email: /etc/ssl/certs/ directory may not be usable as ca_path
2014-01-27Merge branch 'jn/ignore-doc'Libravatar Junio C Hamano1-1/+1
Explicitly list $HOME/.config/git/ignore as one of the places you can use to keep ignore patterns that depend on your personal choice of tools, e.g. *~ for Emacs users. * jn/ignore-doc: gitignore doc: add global gitignore to synopsis
2014-01-27Merge branch 'jk/interpret-branch-name-fix'Libravatar Junio C Hamano3-45/+124
Fix a handful of bugs around interpreting $branch@{upstream} notation and its lookalike, when $branch part has interesting characters, e.g. "@", and ":". * jk/interpret-branch-name-fix: interpret_branch_name: find all possible @-marks interpret_branch_name: avoid @{upstream} past colon interpret_branch_name: always respect "namelen" parameter interpret_branch_name: rename "cp" variable to "at" interpret_branch_name: factor out upstream handling
2014-01-27Merge branch 'jk/allow-fetch-onelevel-refname'Libravatar Junio C Hamano2-1/+12
"git clone" would fail to clone from a repository that has a ref directly under "refs/", e.g. "refs/stash", because different validation paths do different things on such a refname. Loosen the client side's validation to allow such a ref. * jk/allow-fetch-onelevel-refname: fetch-pack: do not filter out one-level refs
2014-01-27Merge branch 'jc/revision-range-unpeel'Libravatar Junio C Hamano2-12/+33
"git log --left-right A...B" lost the "leftness" of commits reachable from A when A is a tag as a side effect of a recent bugfix. This is a regression in 1.8.4.x series. * jc/revision-range-unpeel: revision: propagate flag bits from tags to pointees revision: mark contents of an uninteresting tree uninteresting
2014-01-27Merge branch 'mh/retire-ref-fetch-rules'Libravatar Junio C Hamano3-10/+13
Code simplification. * mh/retire-ref-fetch-rules: refname_match(): always use the rules in ref_rev_parse_rules
2014-01-27Merge branch 'mh/attr-macro-doc'Libravatar Junio C Hamano1-3/+6
* mh/attr-macro-doc: gitattributes: document more clearly where macros are allowed
2014-01-27Merge branch 'jc/maint-pull-docfix'Libravatar Junio C Hamano2-5/+8
* jc/maint-pull-docfix: Documentation: "git pull" does not have the "-m" option Documentation: exclude irrelevant options from "git pull"
2014-01-27Merge branch 'jk/complete-merge-base'Libravatar Junio C Hamano1-1/+7
* jk/complete-merge-base: completion: handle --[no-]fork-point options to git-rebase completion: complete merge-base options
2014-01-27Merge branch 'ab/subtree-doc'Libravatar Junio C Hamano2-13/+23
* ab/subtree-doc: subtree: fix argument validation in add/pull/push
2014-01-23tree-walk.c: ignore trailing slash on submodule in tree_entry_interesting()Libravatar Nguyễn Thái Ngọc Duy2-1/+18
We do ignore trailing slash on a directory, so pathspec "abc/" matches directory "abc". A submodule is also a directory. Apply the same logic to it. This makes "git log submodule-path" and "git log submodule-path/" produce the same output. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-23Makefile: Fix compilation of Windows resource fileLibravatar Johannes Sixt2-3/+3
If the git version number consists of less than three period separated numbers, then the Windows resource file compilation issues a syntax error: $ touch git.rc $ make V=1 git.res GIT_VERSION = 1.9.rc0 windres -O coff \ -DMAJOR=1 -DMINOR=9 -DPATCH=rc0 \ -DGIT_VERSION="\\\"1.9.rc0\\\"" git.rc -o git.res C:\msysgit\msysgit\mingw\bin\windres.exe: git.rc:2: syntax error make: *** [git.res] Error 1 $ Note that -DPATCH=rc0. The values passed via -DMAJOR=, -DMINOR=, and -DPATCH= are used in FILEVERSION and PRODUCTVERSION statements, which expect up to four numeric values. These version numbers are intended for machine consumption. They are typically inspected by installers to decide whether a file to be installed is newer than one that exists on the system, but are not used for much else. We can be pretty certain that there are no tools that look at these version numbers, not even the installer of Git for Windows does. Therefore, to fix the syntax error, fill in only the first two numbers, which we are guaranteed to find in Git version numbers. Signed-off-by: Johannes Sixt <j6t@kdbg.org> Acked-by: Pat Thoyts <patthoyts@users.sourceforge.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-23Merge git://git.bogomips.org/git-svnLibravatar Junio C Hamano1-3/+38
* 'master' of git://git.bogomips.org/git-svn: git-svn: memoize _rev_list and rebuild
2014-01-23Merge git://ozlabs.org/~paulus/gitkLibravatar Junio C Hamano3-11/+1396
* 'master' of git://ozlabs.org/~paulus/gitk: gitk: Indent word-wrapped lines in commit display header gitk: Comply with XDG base directory specification gitk: Replace "next" and "prev" buttons with down and up arrows gitk: chmod +x po2msg.sh gitk: Update copyright dates gitk: Add Bulgarian translation (304t) gitk: Fix mistype
2014-01-23gitk: Indent word-wrapped lines in commit display headerLibravatar Paul Mackerras1-1/+1
In the cases where the lines starting with Precedes:, Follows: and Branches: in the commit display are long enough to be word-wrapped, this adds a 1cm margin on the left of the wrapped lines, to make the display more readable. Suggested by Stephen Rothwell. Signed-off-by: Paul Mackerras <paulus@samba.org>
2014-01-23git-svn: memoize _rev_list and rebuildLibravatar lin zuojian1-3/+38
According to profile data, _rev_list and rebuild consume a large portion of time. Memoize the results of _rev_list and memoize rebuild internals to avoid subprocess invocation. When importing 15152 revisions on a LAN, time improved from 10 hours to 3-4 hours. Signed-off-by: lin zuojian <manjian2006@gmail.com> Signed-off-by: Eric Wong <normalperson@yhbt.net>
2014-01-22Add cross-references between docs for for-each-ref and show-refLibravatar Michael Haggerty2-0/+5
Add cross-references between the manpages for git-for-each-ref(1) and git-show-ref(1). Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22safe_create_leading_directories(): on Windows, \ can separate path componentsLibravatar Michael Haggerty1-4/+8
When cloning to a directory "C:\foo\bar" from Windows' cmd.exe where "foo" does not exist yet, Git would throw an error like fatal: could not create work tree dir 'c:\foo\bar'.: No such file or directory Fix this by not hard-coding a platform specific directory separator into safe_create_leading_directories(). This patch, including its entire commit message, is derived from a patch by Sebastian Schuberth. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Sebastian Schuberth <sschuberth@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22git p4 doc: use two-line style for options with multiple spellingsLibravatar Pete Wyckoff1-2/+4
Thomas Rast noticed the docs have a mix of styles when it comes to options with multiple spellings. Standardize the couple in git-p4.txt that are odd. Instead of: -n, --dry-run:: Do this: -n:: --dry-run:: See http://thread.gmane.org/gmane.comp.version-control.git/219936/focus=219945 Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22git p4 test: examine behavior with locked (+l) filesLibravatar Pete Wyckoff1-0/+145
The p4 server can enforce file locking, so that only one user can edit a file at a time. Git p4 is unable to submit changes to locked files. Currently it exits poorly. Ideally it would notice the locked condition and clean up nicely. Add a bunch of tests that describe the problem, hoping that fixes appear in the future. Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22git p4: fix an error message when "p4 where" failsLibravatar Pete Wyckoff1-1/+1
When "p4 where" fails, for whatever reason, the error message tries to show an undefined variable. This minor bug applies only when using a client spec, and was introduced recently in 9d57c4a (git p4: implement view spec wildcards with "p4 where", 2013-08-30). Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22git p4: handle files with wildcards when doing RCS scrubbingLibravatar Pete Wyckoff2-2/+25
Commit 9d7d446 (git p4: submit files with wildcards, 2012-04-29) fixed problems with handling files that had p4 wildcard characters, like "@" and "*". But it missed one case, that of RCS keyword scrubbing, which uses "p4 fstat" to extract type information. Fix it by calling wildcard_encode() on the raw filename. Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22git p4 test: do not pollute /tmpLibravatar Pete Wyckoff3-4/+12
Generating the submit template for p4 uses tempfile.mkstemp(), which by default puts files in /tmp. For a test that fails, possibly on purpose, this is not cleaned up. Run with TMPDIR pointing into the trash directory so the temp files go away with the test results. To do this required some other minor changes. First, the editor is launched using system(editor + " " + template_file), using shell expansion to build the command string. This doesn't work if editor has a space in it. And is generally unwise as it's easy to fool the shell into doing extra work. Exec the args directly, without shell expansion. Second, without shell expansion, the trick of "P4EDITOR=:" used in the tests doesn't work. Use a real command, true, as the non-interactive editor for testing. Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22git p4 test: run as user "author"Libravatar Pete Wyckoff2-25/+28
The tests use author@example.com as the canonical submitter, but he does not have an entry in the p4 users database. This causes the generated change description to complain that the git and p4 users disagree. The complaint message is still valid, but isn't useful in tests. It was introduced in 848de9c (git-p4: warn if git authorship won't be retained, 2011-05-13). Fix t9813 to use @example.com instead of @localhost due to change in p4_add_user(). Move the function into the git p4 test library so author can be added at initialization time. Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22git p4 test: is_cli_file_writeable succeedsLibravatar Pete Wyckoff1-1/+1
Commit e9df0f9 (git p4: cygwin p4 client does not mark read-only, 2013-01-26) fixed a problem with "test -w" on cygwin, but mistakenly marked the new test as failing. Fix this. Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22git p4 test: explicitly check p4 wildcard deleteLibravatar Pete Wyckoff1-0/+27
There was no test where p4 deleted a file with a wildcard character. Make sure git p4 applies the wildcard decoding properly when importing a delete that includes a wildcard. Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22git p4: work around p4 bug that causes empty symlinksLibravatar Pete Wyckoff2-1/+74
Damien Gérard highlights an interesting problem. Some p4 repositories end up with symlinks that have an empty target. It is not possible to create this with current p4, but they do indeed exist. The effect in git p4 is that "p4 print" on the symlink returns an empty string, confusing the curret symlink-handling code. Such broken repositories cause problems in p4 as well, even with no git involved. In p4, syncing to a change that includes a bogus symlink causes errors: //depot/empty-symlink - updating /home/me/p4/empty-symlink rename: /home/me/p4/empty-symlink: No such file or directory and leaves no symlink. In git, replicate the p4 behavior by ignoring these bad symlinks. If, in a later p4 revision, the symlink happens to point to something non-null, the symlink will be replaced properly. Add a big test for all this too. This happens to be a regression introduced by 1292df1 (git-p4: Fix occasional truncation of symlink contents., 2013-08-08) and appeared first in 1.8.5. But it shows up only in p4 repositories of dubious character, so can wait for a proper release. Tested-by: Damien Gérard <damien@iwi.me> Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-22gitk: Comply with XDG base directory specificationLibravatar Astril Hayato1-5/+30
Write the gitk config data to $XDG_CONFIG_HOME/git/gitk ($HOME/.config/git/gitk by default) in line with the XDG specification. This makes it consistent with git which also follows the spec. If $HOME/.gitk already exists use that for backward compatibility, so only new installations are affected. Signed-off-by: Astril Hayato <astrilhayato@gmail.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2014-01-21git p4 test: ensure p4 symlink parsing worksLibravatar Pete Wyckoff1-0/+17
While this happens to work, there was no test to make sure that the basic importing of a symlink from p4 to git functioned. Add a simple test to create a symlink in p4 and import it into git, then verify that the symlink exists and has the correct target. Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21git p4 test: wildcards are supportedLibravatar Pete Wyckoff1-8/+8
Since 9d57c4a (git p4: implement view spec wildcards with "p4 where", 2013-08-30), all the wildcard types should be supported. Change must-fail tests to mark that they now pass. Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21list-objects: only look at cmdline trees with edge_hintLibravatar Jeff King1-9/+11
When rev-list is given a command-line like: git rev-list --objects $commit --not --all the most accurate answer is the difference between the set of objects reachable from $commit and the set reachable from all of the existing refs. However, we have not historically provided that answer, because it is very expensive to calculate. We would have to open every tree of every commit in the entire history. Instead, we find the accurate set difference of the reachable commits, and then mark the trees at the boundaries as uninteresting. This misses objects which appear in the trees of both the interesting commits and deep within the uninteresting history. Commit fbd4a70 (list-objects: mark more commits as edges in mark_edges_uninteresting, 2013-08-16) noticed that we miss those objects during pack-objects, and added code to examine the trees of all of the "--not" refs given on the command-line. Note that this is still not the complete set difference, because we look only at the tips of the command-line arguments, not all of their reachable commits. But it increases the set of boundary objects we consider, which is especially important for shallow fetches. So we are trading extra CPU time for a larger set of boundary objects, which can improve the resulting pack size for a --thin pack. This tradeoff probably makes sense in the context of pack-objects, where we have set revs->edge_hint to have the traversal feed us the set of boundary objects. For a regular rev-list, though, it is probably not a good tradeoff. It is true that it makes our list slightly closer to a true set difference, but it is a rare case where this is important. And because we do not have revs->edge_hint set, we do nothing useful with the larger set of boundary objects. This patch therefore ties the extra tree examination to the revs->edge_hint flag; it is the presence of that flag that makes the tradeoff worthwhile. Here is output from the p0001-rev-list showing the improvement in performance: Test HEAD^ HEAD ----------------------------------------------------------------------------------------- 0001.1: rev-list --all 0.69(0.65+0.02) 0.69(0.66+0.02) +0.0% 0001.2: rev-list --all --objects 3.22(3.19+0.03) 3.23(3.20+0.03) +0.3% 0001.4: rev-list $commit --not --all 0.04(0.04+0.00) 0.04(0.04+0.00) +0.0% 0001.5: rev-list --objects $commit --not --all 0.27(0.26+0.01) 0.04(0.04+0.00) -85.2% Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21t/perf: time rev-list with UNINTERESTING commitsLibravatar Jeff King1-0/+12
We time a straight "rev-list --all" and its "--object" counterpart, both going all the way to the root. However, we do not time a partial history walk. This patch adds an extreme case: a walk over a very small slice of history, but with a very large set of UNINTERESTING tips. This is similar to the connectivity check run by git on a small fetch, or the walk done by any pre-receive hooks that want to check incoming commits. This test reveals a performance regression in git v1.8.4.2, caused by fbd4a70 (list-objects: mark more commits as edges in mark_edges_uninteresting, 2013-08-16): Test fbd4a703^ fbd4a703 ------------------------------------------------------------------------------------------ 0001.1: rev-list --all 0.69(0.67+0.02) 0.69(0.68+0.01) +0.0% 0001.2: rev-list --all --objects 3.47(3.44+0.02) 3.48(3.44+0.03) +0.3% 0001.4: rev-list $commit --not --all 0.04(0.04+0.00) 0.04(0.04+0.00) +0.0% 0001.5: rev-list --objects $commit --not --all 0.04(0.03+0.00) 0.27(0.24+0.02) +575.0% Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21Documentation: @{-N} can refer to a commitLibravatar Thomas Rast2-3/+3
The @{-N} syntax always referred to the N-th last thing checked out, which can be either a branch or a commit (for detached HEAD cases). However, the documentation only mentioned branches. Edit in a "/commit" in the appropriate places. Reported-by: Kevin <ikke@ikke.info> Signed-off-by: Thomas Rast <tr@thomasrast.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21rename_tmp_log(): on SCLD_VANISHED, retryLibravatar Michael Haggerty1-1/+8
If safe_create_leading_directories() fails because a file along the path unexpectedly vanished, try again from the beginning. Try at most 4 times. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21rename_tmp_log(): limit the number of remote_empty_directories() attemptsLibravatar Michael Haggerty1-2/+2
This doesn't seem to be a likely error, but we've got the counter anyway, so we might as well use it for an added bit of safety. Please note that the first call to rename() is optimistic, and it is normal for it to fail if there is a directory in the way. So bump the total number of allowed attempts to 4, to be sure that we can still have at least 3 retries in the case of a race. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21rename_tmp_log(): handle a possible mkdir/rmdir raceLibravatar Michael Haggerty1-1/+10
If a directory vanishes while renaming the temporary reflog file, retry (up to 3 times). This could happen if another process deletes the directory created by safe_create_leading_directories() just before we rename the file into the directory. As far as I can tell, this race could not occur internal to git. The only time that a directory under $GIT_DIR/logs is deleted is if room has to be made for a log file for a reference with the same name; for example, in the following sequence: git branch foo/bar # Creates file .git/logs/refs/heads/foo/bar git branch -d foo/bar # Deletes file but leaves .git/logs/refs/heads/foo/ git branch foo # Deletes .git/logs/refs/heads/foo/ But the only reason the last command deletes the directory is because it wants to create a file with the same name. So if another process (e.g., git branch foo/baz ) wants to create that directory, one of the two is doomed to failure anyway because of a D/F conflict. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-21rename_ref(): extract function rename_tmp_log()Libravatar Michael Haggerty1-22/+30
It's about to become a bit more complex. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>