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2014-10-15branch -d: simplify by using RESOLVE_REF_READINGLibravatar Ronnie Sahlberg1-3/+4
When "git branch -d" reads the branch it is about to delete, it used to avoid passing the RESOLVE_REF_READING ('treat missing ref as error') flag because a symref pointing to a nonexistent ref would show up as missing instead of as something that could be deleted. To check if a ref is actually missing, we then check - is it a symref? - if not, did it resolve to null_sha1? Now we pass RESOLVE_REF_NO_RECURSE and the correct information is returned for a symref even when it points to a missing ref. Simplify by relying on RESOLVE_REF_READING. No functional change intended. Signed-off-by: Ronnie Sahlberg <sahlberg@google.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-15branch -d: avoid repeated symref resolutionLibravatar Jonathan Nieder6-3/+68
If a repository gets in a broken state with too much symref nesting, it cannot be repaired with "git branch -d": $ git symbolic-ref refs/heads/nonsense refs/heads/nonsense $ git branch -d nonsense error: branch 'nonsense' not found. Worse, "git update-ref --no-deref -d" doesn't work for such repairs either: $ git update-ref -d refs/heads/nonsense error: unable to resolve reference refs/heads/nonsense: Too many levels of symbolic links Fix both by teaching resolve_ref_unsafe a new RESOLVE_REF_NO_RECURSE flag and passing it when appropriate. Callers can still read the value of a symref (for example to print a message about it) with that flag set --- resolve_ref_unsafe will resolve one level of symrefs and stop there. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Reviewed-by: Ronnie Sahlberg <sahlberg@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-15reflog test: test interaction with detached HEADLibravatar Junio C Hamano1-0/+70
A proposed patch produced broken HEAD reflog entries when checking out anything other than a branch. The testsuite still passed, so it took a few days for the bug to be noticed. Add tests checking the content of the reflog after detaching and reattaching HEAD so we don't have to rely on manual testing to catch such problems in the future. [jn: using 'log -g --format=%H' instead of parsing --oneline output, resetting state in each test so they can be safely reordered or skipped] Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Reviewed-by: Ronnie Sahlberg <sahlberg@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-15refs.c: change resolve_ref_unsafe reading argument to be a flags fieldLibravatar Ronnie Sahlberg28-92/+124
resolve_ref_unsafe takes a boolean argument for reading (a nonexistent ref resolves successfully for writing but not for reading). Change this to be a flags field instead, and pass the new constant RESOLVE_REF_READING when we want this behaviour. While at it, swap two of the arguments in the function to put output arguments at the end. As a nice side effect, this ensures that we can catch callers that were unaware of the new API so they can be audited. Give the wrapper functions resolve_refdup and read_ref_full the same treatment for consistency. Signed-off-by: Ronnie Sahlberg <sahlberg@google.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-15refs.c: make write_ref_sha1 staticLibravatar Ronnie Sahlberg2-5/+8
No external users call write_ref_sha1 any more so let's declare it static. Signed-off-by: Ronnie Sahlberg <sahlberg@google.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-15fetch.c: change s_update_ref to use a ref transactionLibravatar Ronnie Sahlberg1-10/+24
Change s_update_ref to use a ref transaction for the ref update. Signed-off-by: Ronnie Sahlberg <sahlberg@google.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-15refs.c: ref_transaction_commit: distinguish name conflicts from other errorsLibravatar Ronnie Sahlberg2-12/+23
In _commit, ENOTDIR can happen in the call to lock_ref_sha1_basic, either when we lstat the new refname or if the name checking function reports that the same type of conflict happened. In both cases, it means that we can not create the new ref due to a name conflict. Start defining specific return codes for _commit. TRANSACTION_NAME_CONFLICT refers to a failure to create a ref due to a name conflict with another ref. TRANSACTION_GENERIC_ERROR is for all other errors. When "git fetch" is creating refs, name conflicts differ from other errors in that they are likely to be resolved by running "git remote prune <remote>". "git fetch" currently inspects errno to decide whether to give that advice. Once it switches to the transaction API, it can check for TRANSACTION_NAME_CONFLICT instead. Signed-off-by: Ronnie Sahlberg <sahlberg@google.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-15refs.c: pass a list of names to skip to is_refname_availableLibravatar Ronnie Sahlberg1-18/+32
Change is_refname_available to take a list of strings to exclude when checking for conflicts instead of just one single name. We can already exclude a single name for the sake of renames. This generalizes that support. ref_transaction_commit already tracks a set of refs that are being deleted in an array. This array is then used to exclude refs from being written to the packed-refs file. At some stage we will want to change this array to a struct string_list and then we can pass it to is_refname_available via the call to lock_ref_sha1_basic. That will allow us to perform transactions that perform multiple renames as long as there are no conflicts within the starting or ending state. For example, that would allow a single transaction that contains two renames that are both individually conflicting: m -> n/n n -> m/m No functional change intended yet. Signed-off-by: Ronnie Sahlberg <sahlberg@google.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-15refs.c: call lock_ref_sha1_basic directly from commitLibravatar Ronnie Sahlberg1-6/+6
Skip using the lock_any_ref_for_update wrapper and call lock_ref_sha1_basic directly from the commit function. Signed-off-by: Ronnie Sahlberg <sahlberg@google.com> Reviewed-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-15refs.c: refuse to lock badly named refs in lock_ref_sha1_basicLibravatar Ronnie Sahlberg1-2/+5
Move the check for check_refname_format from lock_any_ref_for_update to lock_ref_sha1_basic. At some later stage we will get rid of lock_any_ref_for_update completely. This has no visible impact to callers except for the inability to lock badly named refs, which is not possible today already for other reasons.(*) Keep lock_any_ref_for_update as a no-op wrapper. It is the public facing version of this interface and keeping it as a separate function will make it easier to experiment with the internal lock_ref_sha1_basic signature. (*) For example, if lock_ref_sha1_basic checks the refname format and refuses to lock badly named refs, it will not be possible to delete such refs because the first step of deletion is to lock the ref. We currently already fail in that case because these refs are not recognized to exist: $ cp .git/refs/heads/master .git/refs/heads/echo...\*\* $ git branch -D .git/refs/heads/echo...\*\* error: branch '.git/refs/heads/echo...**' not found. This has been broken for a while. Later patches in the series will start repairing the handling of badly named refs. Signed-off-by: Ronnie Sahlberg <sahlberg@google.com> Reviewed-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-15rename_ref: don't ask read_ref_full where the ref came fromLibravatar Ronnie Sahlberg1-1/+1
We call read_ref_full with a pointer to flags from rename_ref but since we never actually use the returned flags we can just pass NULL here instead. Signed-off-by: Ronnie Sahlberg <sahlberg@google.com> Reviewed-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-15refs.c: pass the ref log message to _create/delete/update instead of _commitLibravatar Ronnie Sahlberg11-44/+54
Change the ref transaction API so that we pass the reflog message to the create/delete/update functions instead of to ref_transaction_commit. This allows different reflog messages for each ref update in a multi-ref transaction. Signed-off-by: Ronnie Sahlberg <sahlberg@google.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-15refs.c: add an err argument to delete_ref_looseLibravatar Ronnie Sahlberg1-4/+5
Add an err argument to delete_ref_loose so that we can pass a descriptive error string back to the caller. Pass the err argument from transaction commit to this function so that transaction users will have a nice error string if the transaction failed due to delete_ref_loose. Signed-off-by: Ronnie Sahlberg <sahlberg@google.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-15wrapper.c: add a new function unlink_or_msgLibravatar Ronnie Sahlberg2-0/+23
This behaves like unlink_or_warn except that on failure it writes the message to its 'err' argument, which the caller can display in an appropriate way or ignore. Signed-off-by: Ronnie Sahlberg <sahlberg@google.com> Reviewed-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-15refs.c: lock_ref_sha1_basic is used for all refsLibravatar Ronnie Sahlberg1-1/+1
lock_ref_sha1_basic is used to lock refs that sit directly in the .git dir such as HEAD and MERGE_HEAD in addition to the more ordinary refs under "refs/". Remove the note claiming otherwise. Signed-off-by: Ronnie Sahlberg <sahlberg@google.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-15wrapper.c: remove/unlink_or_warn: simplify, treat ENOENT as successLibravatar Ronnie Sahlberg3-11/+12
Simplify the function warn_if_unremovable slightly. Additionally, change behaviour slightly. If we failed to remove the object because the object does not exist, we can still return success back to the caller since none of the callers depend on "fail if the file did not exist". Signed-off-by: Ronnie Sahlberg <sahlberg@google.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-15mv test: recreate mod/ directory instead of relying on stale copyLibravatar Jonathan Nieder1-5/+10
The tests for 'git mv moves a submodule' functionality often run commands like git mv sub mod/sub to move a submodule into a subdirectory. Just like plain /bin/mv, this is supposed to succeed if the mod/ parent directory exists and fail if it doesn't exist. Usually these tests mkdir the parent directory beforehand, but some instead rely on it being left behind by previous tests. More precisely, when 'git reset --hard' tries to move to a state where mod/sub is not present any more, it would perform the following operations: rmdir("mod/sub") rmdir("mod") The first fails with ENOENT because the test script removed mod/sub with "rm -rf" already, so 'reset --hard' doesn't bother to move on to the second, and the mod/ directory is kept around. Better to explicitly remove and re-create the mod/ directory so later tests don't have to depend on the directory left behind by the earlier ones at all (making it easier to rearrange or skip some tests in the file or to tweak 'reset --hard' behavior without breaking unrelated tests). Noticed while testing a patch that fixes the reset --hard behavior described above. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Reviewed-by: Ronnie Sahlberg <sahlberg@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-14Update draft release notes to 2.2Libravatar Junio C Hamano1-0/+21
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-14Merge branch 'bc/asciidoc-pretty-formats-fix'Libravatar Junio C Hamano1-1/+1
* bc/asciidoc-pretty-formats-fix: Documentation: fix misrender of pretty-formats in Asciidoctor
2014-10-14Merge branch 'rs/plug-leak-in-bundle'Libravatar Junio C Hamano1-7/+10
* rs/plug-leak-in-bundle: bundle: plug minor memory leak in is_tag_in_date_range()
2014-10-14Merge branch 'rs/more-uses-of-skip-prefix'Libravatar Junio C Hamano10-75/+69
* rs/more-uses-of-skip-prefix: use skip_prefix() to avoid more magic numbers
2014-10-14Merge branch 'rs/mailsplit'Libravatar Junio C Hamano1-1/+0
* rs/mailsplit: mailsplit: remove unnecessary unlink(2) call
2014-10-14Merge branch 'rs/sha1-array-test'Libravatar Junio C Hamano5-2/+130
* rs/sha1-array-test: sha1-lookup: handle duplicates in sha1_pos() sha1-array: add test-sha1-array and basic tests
2014-10-14Merge branch 'mh/lockfile-stdio'Libravatar Junio C Hamano5-39/+71
* mh/lockfile-stdio: commit_packed_refs(): reimplement using fdopen_lock_file() dump_marks(): reimplement using fdopen_lock_file() fdopen_lock_file(): access a lockfile using stdio
2014-10-14Merge branch 'mh/lockfile'Libravatar Junio C Hamano36-260/+510
The lockfile API and its users have been cleaned up. * mh/lockfile: (38 commits) lockfile.h: extract new header file for the functions in lockfile.c hold_locked_index(): move from lockfile.c to read-cache.c hold_lock_file_for_append(): restore errno before returning get_locked_file_path(): new function lockfile.c: rename static functions lockfile: rename LOCK_NODEREF to LOCK_NO_DEREF commit_lock_file_to(): refactor a helper out of commit_lock_file() trim_last_path_component(): replace last_path_elm() resolve_symlink(): take a strbuf parameter resolve_symlink(): use a strbuf for internal scratch space lockfile: change lock_file::filename into a strbuf commit_lock_file(): use a strbuf to manage temporary space try_merge_strategy(): use a statically-allocated lock_file object try_merge_strategy(): remove redundant lock_file allocation struct lock_file: declare some fields volatile lockfile: avoid transitory invalid states git_config_set_multivar_in_file(): avoid call to rollback_lock_file() dump_marks(): remove a redundant call to rollback_lock_file() api-lockfile: document edge cases commit_lock_file(): rollback lock file on failure to rename ...
2014-10-14Merge branch 'sk/tag-contains-wo-recursion'Libravatar Junio C Hamano1-2/+2
* sk/tag-contains-wo-recursion: t7004: give the test a bit more stack space
2014-10-14Merge branch 'da/completion-show-signature'Libravatar Junio C Hamano1-0/+2
* da/completion-show-signature: completion: add --show-signature for log and show
2014-10-14Merge branch 'rs/daemon-fixes'Libravatar Junio C Hamano1-18/+15
"git daemon" (with NO_IPV6 build configuration) used to incorrectly use the hostname even when gethostbyname() reported that the given hostname is not found. * rs/daemon-fixes: daemon: remove write-only variable maxfd daemon: fix error message after bind() daemon: handle gethostbyname() error
2014-10-14Merge branch 'dt/cache-tree-repair'Libravatar Junio C Hamano1-1/+1
This fixes a topic that has graduated to 'master'. * dt/cache-tree-repair: t0090: avoid passing empty string to printf %d
2014-10-14Merge branch 'so/rebase-doc-fork-point'Libravatar Junio C Hamano1-12/+19
* so/rebase-doc-fork-point: Documentation/git-rebase.txt: document when --fork-point is auto-enabled
2014-10-14Merge branch 'da/include-compat-util-first-in-c'Libravatar Junio C Hamano9-8/+7
Code clean-up. * da/include-compat-util-first-in-c: cleanups: ensure that git-compat-util.h is included first
2014-10-08Documentation: fix misrender of pretty-formats in AsciidoctorLibravatar brian m. carlson1-1/+1
Neither the AsciiDoc nor the Asciidoctor documentation specify whether the same number of delimiter characters must be used to end a block as to begin it, although both sets of documentation show exactly matching pairs. AsciiDoc allows mismatches, but AsciiDoctor apparently does not. Adjust the pretty formats documentation to use matching pairs to prevent a misrendering where the remainder of the document was rendered as a listing block. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-08Update draft release notes to 2.2Libravatar Junio C Hamano1-0/+13
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-08Merge branch 'sp/stream-clean-filter'Libravatar Junio C Hamano10-52/+164
When running a required clean filter, we do not have to mmap the original before feeding the filter. Instead, stream the file contents directly to the filter and process its output. * sp/stream-clean-filter: sha1_file: don't convert off_t to size_t too early to avoid potential die() convert: stream from fd to required clean filter to reduce used address space copy_fd(): do not close the input file descriptor mmap_limit: introduce GIT_MMAP_LIMIT to allow testing expected mmap size memory_limit: use git_env_ulong() to parse GIT_ALLOC_LIMIT config.c: add git_env_ulong() to parse environment variable convert: drop arguments other than 'path' from would_convert_to_git()
2014-10-08Merge branch 'bw/use-write-script-in-tests'Libravatar Junio C Hamano1-3/+1
* bw/use-write-script-in-tests: t/lib-credential: use write_script
2014-10-08Merge branch 'nd/archive-pathspec'Libravatar Junio C Hamano2-3/+108
"git archive" learned to filter what gets archived with pathspec. * nd/archive-pathspec: archive: support filtering paths with glob
2014-10-08Merge branch 'jc/push-cert'Libravatar Junio C Hamano23-159/+932
Allow "git push" request to be signed, so that it can be verified and audited, using the GPG signature of the person who pushed, that the tips of branches at a public repository really point the commits the pusher wanted to, without having to "trust" the server. * jc/push-cert: (24 commits) receive-pack::hmac_sha1(): copy the entire SHA-1 hash out signed push: allow stale nonce in stateless mode signed push: teach smart-HTTP to pass "git push --signed" around signed push: fortify against replay attacks signed push: add "pushee" header to push certificate signed push: remove duplicated protocol info send-pack: send feature request on push-cert packet receive-pack: GPG-validate push certificates push: the beginning of "git push --signed" pack-protocol doc: typofix for PKT-LINE gpg-interface: move parse_signature() to where it should be gpg-interface: move parse_gpg_output() to where it should be send-pack: clarify that cmds_sent is a boolean send-pack: refactor inspecting and resetting status and sending commands send-pack: rename "new_refs" to "need_pack_data" receive-pack: factor out capability string generation send-pack: factor out capability string generation send-pack: always send capabilities send-pack: refactor decision to send update per ref send-pack: move REF_STATUS_REJECT_NODELETE logic a bit higher ...
2014-10-07Sync with maintLibravatar Junio C Hamano1-1/+1
* maint: git-tag.txt: Add a missing hyphen to `-s`
2014-10-07Merge branch 'maint-2.0' into maintLibravatar Junio C Hamano1-1/+1
* maint-2.0: git-tag.txt: Add a missing hyphen to `-s`
2014-10-07Merge branch 'maint-1.9' into maint-2.0Libravatar Junio C Hamano1-1/+1
* maint-1.9: git-tag.txt: Add a missing hyphen to `-s`
2014-10-07Merge branch 'maint-1.8.5' into maint-1.9Libravatar Junio C Hamano1-1/+1
* maint-1.8.5: git-tag.txt: Add a missing hyphen to `-s`
2014-10-07Merge branch 'jk/mbox-from-line' into maintLibravatar Junio C Hamano6-1/+66
Some MUAs mangled a line in a message that begins with "From " to ">From " when writing to a mailbox file and feeding such an input to "git am" used to lose such a line. * jk/mbox-from-line: mailinfo: work around -Wstring-plus-int warning mailinfo: make ">From" in-body header check more robust
2014-10-07completion: add --show-signature for log and showLibravatar David Aguilar1-0/+2
Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-07use skip_prefix() to avoid more magic numbersLibravatar René Scharfe10-75/+69
Continue where ae021d87 (use skip_prefix to avoid magic numbers) left off and use skip_prefix() in more places for determining the lengths of prefix strings to avoid using dependent constants and other indirect methods. Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-07git-tag.txt: Add a missing hyphen to `-s`Libravatar Wieland Hoffmann1-1/+1
Signed-off-by: Wieland Hoffmann <themineo@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-07mailsplit: remove unnecessary unlink(2) callLibravatar René Scharfe1-1/+0
The output file hasn't been created at this point, yet, so there is no need to delete it when exiting early. Suggested-by: Jeff King <peff@peff.net> Signed-off-by: Rene Scharfe <l.s.r@web.de> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-07bundle: plug minor memory leak in is_tag_in_date_range()Libravatar René Scharfe1-7/+10
Free the buffer returned by read_sha1_file() even if no valid tagger line is found. Signed-off-by: Rene Scharfe <l.s.r@web.de> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-01commit_packed_refs(): reimplement using fdopen_lock_file()Libravatar Michael Haggerty1-4/+1
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-01dump_marks(): reimplement using fdopen_lock_file()Libravatar Michael Haggerty1-19/+2
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-01fdopen_lock_file(): access a lockfile using stdioLibravatar Michael Haggerty3-16/+68
Add a new function, fdopen_lock_file(), which returns a FILE pointer open to the lockfile. If a stream is open on a lock_file object, it is closed using fclose() on commit, rollback, or close_lock_file(). This change will allow callers to use stdio to write to a lockfile without having to muck around in the internal representation of the lock_file object (callers will be rewritten in upcoming commits). Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>