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* upload-archive: use start_command instead of forkErik Faye-Lund2011-10-30
| | | | | | | | | | | | | | | | | | | The POSIX-function fork is not supported on Windows. Use our start_command API instead. As this is the last call-site that depends on the fork-stub in compat/mingw.h, remove that as well. Add an undocumented flag to git-archive that tells it that the action originated from a remote, so features can be disabled. Thanks to Jeff King for work on this part. Remove the NOT_MINGW-prereq for t5000, as git-archive --remote now works. Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com> Helped-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* compat/win32/poll.c: upgrade from upstreamErik Faye-Lund2011-10-30
| | | | | | | | | | | | | | poll.c is updated from revision adc3a5b in git://git.savannah.gnu.org/gnulib.git The changes are applied with --whitespace=fix to reduce noise. poll.h is not upgraded, because the most recent version now contains template-stuff that breaks compilation for us. Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com> Acked-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* mingw: move poll out of sys-folderErik Faye-Lund2011-10-30
| | | | | | | | | | | Both XSI and upstream Gnulib versions expects to find poll.h at the root of some include path, not inside the sys-folder. This helps us when upgrading Gnulib. Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com> Acked-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Merge branch 'maint'Junio C Hamano2011-10-23
|\ | | | | | | | | | | | | | | | | * maint: Git 1.7.7.1 RelNotes/1.7.7.1: setgid bit patch is about fixing "git init" via Makefile setting Conflicts: GIT-VERSION-GEN
| * Git 1.7.7.1v1.7.7.1Junio C Hamano2011-10-23
| | | | | | | | Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * RelNotes/1.7.7.1: setgid bit patch is about fixing "git init" via Makefile ↵Jonathan Nieder2011-10-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | setting The change was actually about "git init -s" which sets the setgid bit on SysV-style systems to allow shared access to a repository, and can provoke errors on BSD-style systems, depending on how permissive the filesystem in use wants to be. More to the point, the patch was just taking a fix that arrived for FreeBSD in v1.5.5 days and making it also apply to machines using an (obscure) GNU userland/FreeBSD kernel mixture. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Update draft release notes to 1.7.8Junio C Hamano2011-10-21
| | | | | | | | Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'po/insn-editor'Junio C Hamano2011-10-21
|\ \ | | | | | | | | | | | | * po/insn-editor: "rebase -i": support special-purpose editor to edit insn sheet
| * | "rebase -i": support special-purpose editor to edit insn sheetPeter Oberndorfer2011-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The insn sheet used by "rebase -i" is designed to be easily editable by any text editor, but an editor that is specifically meant for it (but is otherwise unsuitable for editing regular text files) could be useful by allowing drag & drop reordering in a GUI environment, for example. The GIT_SEQUENCE_EDITOR environment variable and/or the sequence.editor configuration variable can be used to specify such an editor, while allowing the usual editor to be used to edit commit log messages. As usual, the environment variable takes precedence over the configuration variable. It is envisioned that other "sequencer" based tools will use the same mechanism. Signed-off-by: Peter Oberndorfer <kumbayo84@arcor.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Merge branch 'jc/broken-ref-dwim-fix'Junio C Hamano2011-10-21
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | * jc/broken-ref-dwim-fix: resolve_ref(): report breakage to the caller without warning resolve_ref(): expose REF_ISBROKEN flag refs.c: move dwim_ref()/dwim_log() from sha1_name.c
| * | | resolve_ref(): report breakage to the caller without warningJunio C Hamano2011-10-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 629cd3a (resolve_ref(): emit warnings for improperly-formatted references, 2011-09-15) made resolve_ref() warn against files that are found in the directories the ref dwimmery looks at. The intent may be good, but these messages come from a wrong level of the API hierarchy. Instead record the breakage in "flags" whose purpose is to explain the result of the function to the caller, who is in a much better position to make intelligent decision based on the information. This updates sha1_name.c::dwim_ref() to warn against such a broken candidate only when it does not appear directly below $GIT_DIR to restore the traditional behaviour, as we know many files directly underneath $GIT_DIR/ are not refs. Warning against "git show config --" with "$GIT_DIR/config does not look like a well-formed ref" does not make sense, and we may later tweak the dwimmery not to even consider them as candidates, but that is a longer term topic. Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | resolve_ref(): expose REF_ISBROKEN flagJunio C Hamano2011-10-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of keeping this as an internal API, let the callers find out the reason why resolve_ref() returned NULL is not because there was no such file in $GIT_DIR but because a file was corrupt. Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | refs.c: move dwim_ref()/dwim_log() from sha1_name.cJunio C Hamano2011-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Both dwim_ref()/dwim_log() functions are intimately related to the ref parsing rules defined in refs.c and better fits there. Move them together with substitute_branch_name(), a file scope static helper function. Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | Merge branch 'mh/ref-api'Junio C Hamano2011-10-21
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * mh/ref-api: clear_ref_cache(): inline function write_ref_sha1(): only invalidate the loose ref cache clear_ref_cache(): extract two new functions clear_ref_cache(): rename parameter invalidate_ref_cache(): expose this function in the refs API invalidate_ref_cache(): take the submodule as parameter invalidate_ref_cache(): rename function from invalidate_cached_refs()
| * | | | clear_ref_cache(): inline functionMichael Haggerty2011-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | clear_ref_cache() was only called from one place, so inline it there. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | write_ref_sha1(): only invalidate the loose ref cacheMichael Haggerty2011-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since write_ref_sha1() can only write loose refs and cannot write symbolic refs, there is no need for it to invalidate the packed ref cache. Suggested by: Martin Fick <mfick@codeaurora.org> Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | clear_ref_cache(): extract two new functionsMichael Haggerty2011-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Extract two new functions from clear_cached_refs(): clear_loose_ref_cache() and clear_packed_ref_cache(). Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | clear_ref_cache(): rename parameterMichael Haggerty2011-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ...for consistency with the rest of this module. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | invalidate_ref_cache(): expose this function in the refs APIMichael Haggerty2011-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make invalidate_ref_cache() an official part of the refs API. It is currently a fact of life that code outside of refs.c mucks about with references. This change gives such code a way of informing the refs module that it should no longer trust its cache. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | invalidate_ref_cache(): take the submodule as parameterMichael Haggerty2011-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of invalidating the ref cache on an all-or-nothing basis, invalidate the cache for a specific submodule. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | invalidate_ref_cache(): rename function from invalidate_cached_refs()Michael Haggerty2011-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is the cache that is being invalidated, not the references, and the new name makes this unambiguous. Rename other items analogously: * struct cached_refs -> struct ref_cache * cached_refs (the variable) -> ref_cache * clear_cached_refs() -> clear_ref_cache() * create_cached_refs() -> create_ref_cache() * get_cached_refs() -> get_ref_cache() Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | Merge branch 'jc/match-refs-clarify'Junio C Hamano2011-10-21
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * jc/match-refs-clarify: rename "match_refs()" to "match_push_refs()" send-pack: typofix error message
| * | | | | rename "match_refs()" to "match_push_refs()"Junio C Hamano2011-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Yes, there is a warning that says the function is only used by push in big red letters in front of this function, but it didn't say a more important thing it should have said: what the function is for and what it does. Rename it and document it to avoid future confusion. Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | send-pack: typofix error messageJunio C Hamano2011-09-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The message identifies the process as receive-pack when it cannot fork the sideband demultiplexer. We are actually a send-pack. Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | Merge branch 'jc/make-tags'Junio C Hamano2011-10-21
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | * jc/make-tags: Makefile: ask "ls-files" to list source files if available
| * | | | | | Makefile: ask "ls-files" to list source files if availableJunio C Hamano2011-10-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The [ce]tags and cscope targets used to run "find" looking for any paths that match '*.[chS]' to feed the list of source files to downstream xargs. Use "git ls-files" if it is already available to us, and otherwise use a tighter "find" expression that does not list directories and does not go into our .git directory. Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | | Merge branch 'ss/inet-ntop'Junio C Hamano2011-10-21
|\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * ss/inet-ntop: inet_ntop.c: Work around GCC 4.6's detection of uninitialized variables
| * | | | | | | inet_ntop.c: Work around GCC 4.6's detection of uninitialized variablesSebastian Schuberth2011-10-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GCC 4.6 claims that error: 'best.len' may be used uninitialized in this function so silence that warning which is treated as an error by also initializing the "len" members of the struct. Signed-off-by: Sebastian Schuberth <sschuberth@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | | | Merge branch 'jc/maint-remove-renamed-ref'Junio C Hamano2011-10-21
|\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * jc/maint-remove-renamed-ref: branch -m/-M: remove undocumented RENAMED-REF Conflicts: refs.c
| * | | | | | | | branch -m/-M: remove undocumented RENAMED-REFJunio C Hamano2011-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The commit message for c976d41 (git-branch: add options and tests for branch renaming, 2006-11-28) mentions RENAME_REF but otherwise this is not documented anywhere, and it does not appear in any of the tests. Worse yet, the name of the actual file is "RENAMED-REF". This was supposed to hold the commit object name at the tip of the branch the most recent "branch -m/-M" renamed, but that is not necessary in order to be able to recover from a mistake. Even when "branch -M A B" overwrites an existing branch B, what is kept in RENAMED-REF is the commit at the tip of the original branch A, not the commit B from the now-lost branch. Just remove this unused "feature". Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | | | | Merge branch 'pw/p4-update'Junio C Hamano2011-10-21
|\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * pw/p4-update: git-p4: handle files with shell metacharacters git-p4: keyword flattening fixes git-p4: stop ignoring apple filetype git-p4: recognize all p4 filetypes git-p4: handle utf16 filetype properly git-p4 tests: refactor and cleanup
| * | | | | | | | | git-p4: handle files with shell metacharactersLuke Diamand2011-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git-p4 used to simply pass strings into system() and popen(), and relied on the shell doing the necessary expansion. This though meant that shell metacharacters in file names would be corrupted - for example files with $ or space in them. Switch to using subprocess.Popen() and friends, and pass in explicit arrays in the places where it matters. This then avoids needing shell expansion. Add trivial helper functions for some common perforce operations. Add test case. [pw: test cleanup] Signed-off-by: Luke Diamand <luke@diamand.org> Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | | | | | git-p4: keyword flattening fixesPete Wyckoff2011-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Join the text before looking for keywords. There is nothing to prevent the p4 output marshaller from splitting in the middle of a keyword, although it has never been known to happen. Also remove the (?i) regexp modifier; perforce keywords are documented as case-sensitive. Remove the "\n" end-character match. I don't know why that is in there, and every keyword in a fairly large production p4 repository always ends with a $. Acked-by: Luke Diamand <luke@diamand.org> Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | | | | | git-p4: stop ignoring apple filetypePete Wyckoff2011-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently "apple" filetype is ignored explicitly, and the file is not even included in the git repository. This seems wrong. Remove this, letting it be treated like a "binary" filetype. Acked-by: Luke Diamand <luke@diamand.org> Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | | | | | git-p4: recognize all p4 filetypesPete Wyckoff2011-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The previous code was approximate in the filetypes it recognized. Put in the canonical list and be more careful about matching elements of the file type. This might change behavior in some cases, hopefully for the better. Windows newline mangling will now happen on all text files. Previously some like "text+ko" were oddly exempt. Files with multiple combinations of modifiers, like "text+klx", are now recognized for keyword expansion. I expect these to be seen only rarely. Acked-by: Luke Diamand <luke@diamand.org> Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | | | | | git-p4: handle utf16 filetype properlyPete Wyckoff2011-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | One of the filetypes that p4 supports is utf16. Its behavior is odd in this case. The data delivered through "p4 -G print" is not encoded in utf16, although "p4 print -o" will produce the proper utf16-encoded file. When dealing with this filetype, discard the data from -G, and instead read the contents directly. An alternate approach would be to try to encode the data in python. That worked for true utf16 files, but for other files marked as utf16, p4 delivers mangled text in no recognizable encoding. Add a test case to check utf16 handling, and +k and +ko handling. Reported-by: Chris Li <git@chrisli.org> Acked-by: Luke Diamand <luke@diamand.org> Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | | | | | git-p4 tests: refactor and cleanupPete Wyckoff2011-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce a library for functions that are common to multiple git-p4 test files. Be a bit more clever about starting and stopping p4d. Specify a unique port number for each test, so that tests can run in parallel. Start p4d not in daemon mode, and save the pid, to be able to kill it cleanly later. Never kill p4d at startup; always shutdown cleanly. Handle directory changes better. Always chdir inside a subshell, and remove any post-test directory changes. Clean up whitespace, and use test_cmp and test_must_fail more consistently. Separate the tests related to detecting p4 branches into their own file, and add a few more. Acked-by: Luke Diamand <luke@diamand.org> Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | | | | | Merge branch 'cn/doc-config-bare-subsection'Junio C Hamano2011-10-21
|\ \ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * cn/doc-config-bare-subsection: Documentation: update [section.subsection] to reflect what git does
| * | | | | | | | | | Documentation: update [section.subsection] to reflect what git doesCarlos Martín Nieto2011-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using the [section.subsection] syntax, the subsection is transformed to lower-case and is matched case sensitively. Say so in the documentation and mention that you shouldn't be using it anyway. Signed-off-by: Carlos Martín Nieto <cmn@elego.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | | | | | | Merge branch 'jk/maint-pack-objects-compete-with-delete'Junio C Hamano2011-10-21
|\ \ \ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * jk/maint-pack-objects-compete-with-delete: downgrade "packfile cannot be accessed" errors to warnings pack-objects: protect against disappearing packs
| * | | | | | | | | | | downgrade "packfile cannot be accessed" errors to warningsJeff King2011-10-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These can happen if another process simultaneously prunes a pack. But that is not usually an error condition, because a properly-running prune should have repacked the object into a new pack. So we will notice that the pack has disappeared unexpectedly, print a message, try other packs (possibly after re-scanning the list of packs), and find it in the new pack. Acked-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | | | | | | | pack-objects: protect against disappearing packsJeff King2011-10-14
| | |_|_|_|/ / / / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's possible that while pack-objects is running, a simultaneously running prune process might delete a pack that we are interested in. Because we load the pack indices early on, we know that the pack contains our item, but by the time we try to open and map it, it is gone. Since c715f78, we already protect against this in the normal object access code path, but pack-objects accesses the packs at a lower level. In the normal access path, we call find_pack_entry, which will call find_pack_entry_one on each pack index, which does the actual lookup. If it gets a hit, we will actually open and verify the validity of the matching packfile (using c715f78's is_pack_valid). If we can't open it, we'll issue a warning and pretend that we didn't find it, causing us to go on to the next pack (or on to loose objects). Furthermore, we will cache the descriptor to the opened packfile. Which means that later, when we actually try to access the object, we are likely to still have that packfile opened, and won't care if it has been unlinked from the filesystem. Notice the "likely" above. If there is another pack access in the interim, and we run out of descriptors, we could close the pack. And then a later attempt to access the closed pack could fail (we'll try to re-open it, of course, but it may have been deleted). In practice, this doesn't happen because we tend to look up items and then access them immediately. Pack-objects does not follow this code path. Instead, it accesses the packs at a much lower level, using find_pack_entry_one directly. This means we skip the is_pack_valid check, and may end up with the name of a packfile, but no open descriptor. We can add the same is_pack_valid check here. Unfortunately, the access patterns of pack-objects are not quite as nice for keeping lookup and object access together. We look up each object as we find out about it, and the only later when writing the packfile do we necessarily access it. Which means that the opened packfile may be closed in the interim. In practice, however, adding this check still has value, for three reasons. 1. If you have a reasonable number of packs and/or a reasonable file descriptor limit, you can keep all of your packs open simultaneously. If this is the case, then the race is impossible to trigger. 2. Even if you can't keep all packs open at once, you may end up keeping the deleted one open (i.e., you may get lucky). 3. The race window is shortened. You may notice early that the pack is gone, and not try to access it. Triggering the problem without this check means deleting the pack any time after we read the list of index files, but before we access the looked-up objects. Triggering it with this check means deleting the pack means deleting the pack after we do a lookup (and successfully access the packfile), but before we access the object. Which is a smaller window. Acked-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | | | | | | Merge branch 'jk/daemon-msgs'Junio C Hamano2011-10-21
|\ \ \ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * jk/daemon-msgs: daemon: give friendlier error messages to clients Conflicts: daemon.c
| * | | | | | | | | | | daemon: give friendlier error messages to clientsJeff King2011-10-15
| |/ / / / / / / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the git-daemon is asked about an inaccessible repository, it simply hangs up the connection without saying anything further. This makes it hard to distinguish between a repository we cannot access (e.g., due to typo), and a service or network outage. Instead, let's print an "ERR" line, which git clients understand since v1.6.1 (2008-12-24). Because there is a risk of leaking information about non-exported repositories, by default all errors simply say "access denied or repository not exported". Sites which don't have hidden repositories, or don't care, can pass a flag to turn on more specific messages. Signed-off-by: Jeff King <peff@peff.net> Helped-by: Sitaram Chamarty <sitaramc@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | | | | | | Merge branch 'sc/difftool-skip'Junio C Hamano2011-10-21
|\ \ \ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * sc/difftool-skip: t7800: avoid arithmetic expansion notation git-difftool: allow skipping file by typing 'n' at prompt
| * | | | | | | | | | | t7800: avoid arithmetic expansion notationJunio C Hamano2011-10-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The construct "var=$(( something ..." is interpreted by some shells as arithmetic expansion, even when it clearly is not, e.g. var=$((foo; bar) | baz) Avoid the issue by giving an extra SP to help the parser, i.e. var=$( (foo; bar) | baz ) Noticed by Michael J Gruber. Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | | | | | | | git-difftool: allow skipping file by typing 'n' at promptSitaram Chamarty2011-10-10
| |/ / / / / / / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is useful if you forgot to restrict the diff to the paths you want to see, or selecting precisely the ones you want is too much typing. [jc: with a change to return from the function upon 'n' by Charles Bailey and a small tweak in stdin_doesnot_contain() in the test] Signed-off-by: Sitaram Chamarty <sitaram@atc.tcs.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | | | | | | Merge branch 'jc/unseekable-bundle'Junio C Hamano2011-10-21
|\ \ \ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * jc/unseekable-bundle: bundle: add parse_bundle_header() helper function bundle: allowing to read from an unseekable fd Conflicts: transport.c
| * | | | | | | | | | | bundle: add parse_bundle_header() helper functionJunio C Hamano2011-10-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move most of the code from read_bundle_header() to parse_bundle_header() that takes a file descriptor that is already opened for reading, and make the former responsible only for opening the file and noticing errors. As a logical consequence of this, is_bundle() helper function can be implemented as a non-complaining variant of read_bundle_header() that does not return an open file descriptor, and can be used to tighten the check used to decide the use of bundle transport in transport_get() function. Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | | | | | | | bundle: allowing to read from an unseekable fdJunio C Hamano2011-10-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We wished that "git bundle" to eventually learn to read from a network socket which is not seekable. The current code opens with fopen(), reads the file halfway and run ftell(), and reopens the same file with open() and seeks, to skip the header. This patch by itself does not reach that goal yet, but I think it is a right step in that direction. Signed-off-by: Junio C Hamano <gitster@pobox.com>