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* Convert memcpy(a,b,20) to hashcpy(a,b).Shawn Pearce2006-08-23
| | | | | | | | | | | | | | | | | | | | | | | This abstracts away the size of the hash values when copying them from memory location to memory location, much as the introduction of hashcmp abstracted away hash value comparsion. A few call sites were using char* rather than unsigned char* so I added the cast rather than open hashcpy to be void*. This is a reasonable tradeoff as most call sites already use unsigned char* and the existing hashcmp is also declared to be unsigned char*. [jc: Splitted the patch to "master" part, to be followed by a patch for merge-recursive.c which is not in "master" yet. Fixed the cast in the latter hunk to combine-diff.c which was wrong in the original. Also converted ones left-over in combine-diff.c, diff-lib.c and upload-pack.c ] Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Do not use memcmp(sha1_1, sha1_2, 20) with hardcoded length.David Rientjes2006-08-17
| | | | | | | | | | | | | Introduces global inline: hashcmp(const unsigned char *sha1, const unsigned char *sha2) Uses memcmp for comparison and returns the result based on the length of the hash name (a future runtime decision). Acked-by: Alex Riesen <raa.lkml@gmail.com> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Better error message when we are unable to lock the index fileJunio C Hamano2006-08-12
| | | | | | | | | | | | | | | | | Most of the callers except the one in refs.c use the function to update the index file. Among the index writers, everybody except write-tree dies if they cannot open it for writing. This gives the function an extra argument, to tell it to die when it cannot create a new file as the lockfile. The only caller that does not have to die is write-tree, because updating the index for the cache-tree part is optional and not being able to do so does not affect the correctness. I think we do not have to be so careful and make the failure into die() the same way as other callers, but that would be a different patch. Signed-off-by: Junio C Hamano <junkio@cox.net>
* drop length argument of has_extensionRene Scharfe2006-08-11
| | | | | | | | | | | | | | | | | | | As Fredrik points out the current interface of has_extension() is potentially confusing. Its parameters include both a nul-terminated string and a length-limited string. This patch drops the length argument, requiring two nul-terminated strings; all callsites are updated. I checked that all of them indeed provide nul-terminated strings. Filenames need to be nul-terminated anyway if they are to be passed to open() etc. The performance penalty of the additional strlen() is negligible compared to the system calls which inevitably surround has_extension() calls. Additionally, change has_extension() to use size_t inside instead of int, as that is the exact type strlen() returns and memcmp() expects. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Add has_extension()Rene Scharfe2006-08-10
| | | | | | | | The little helper has_extension() documents through its name what we are trying to do and makes sure we don't forget the underrun check. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Display an error from update-ref if target ref name is invalid.Shawn Pearce2006-07-28
| | | | | | | | | | | | | | | | | | | | Alex Riesen (raa.lkml@gmail.com) recently observed that git branch would fail with no error message due to unexpected situations with regards to refs. For example, if .git/refs/heads/gu is a file but "git branch -b refs/heads/gu/fixa HEAD" was invoked by the user it would fail silently due to refs/heads/gu being a file and not a directory. This change adds a test for trying to create a ref within a directory that is actually currently a file, and adds error printing within the ref locking routine should the resolve operation fail. The error printing code probably belongs at this level of the library as other failures within the ref locking, writing and logging code are also currently at this level of the code. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Allow user.name and user.email to drive reflog entry.Shawn Pearce2006-07-10
| | | | | | | | | | | | | | Apparently calling setup_ident() after git_config causes the user.name and user.email values read from the config file to be replaced with the data obtained from the host. This means that users who have setup their email address in user.email will instead be writing reflog entries with their hostname. Moving setup_ident() to before git_config in update-ref resolves this ordering problem. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Fix typos involving the word 'commit'Alp Toker2006-07-09
| | | | | Signed-off-by: Alp Toker <alp@atoker.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
* shared repository - add a few missing calls to adjust_shared_perm().Junio C Hamano2006-06-09
| | | | | | | | | | | | | | | | | | | | | | | | | | There were a few calls to adjust_shared_perm() that were missing: - init-db creates refs, refs/heads, and refs/tags before reading from templates that could specify sharedrepository in the config file; - updating config file created it under user's umask without adjusting; - updating refs created it under user's umask without adjusting; - switching branches created .git/HEAD under user's umask without adjusting. This moves adjust_shared_perm() from sha1_file.c to path.c, since a few SIMPLE_PROGRAM need to call repository configuration functions which in turn need to call adjust_shared_perm(). sha1_file.c needs to link with SHA1 computation library which is usually not linked to SIMPLE_PROGRAM. Signed-off-by: Junio C Hamano <junkio@cox.net>
* ref-log: style fixes.Junio C Hamano2006-06-06
| | | | | | | | | | | | | | | | | | | | A few style fixes to get the code in line with the rest. - asterisk to make a type a pointer to something goes in front of the variable, not at the end of the base type. E.g. a pointer to an integer is "int *ip", not "int* ip". - open parenthesis for function parameter list, unlike syntactic constructs, comes immediately after the function name. E.g. "if (foo) bar();" not "if(foo) bar ();". - "else" does not come on the same line as the closing brace of corresponding "if". The style is mostly a matter of personal taste, and people may disagree, but consistency is important. Signed-off-by: Junio C Hamano <junkio@cox.net>
* refs.c: convert it to use lockfile interface.Junio C Hamano2006-06-06
| | | | | | | | This updates the ref locking code to use creat-rename locking code we use for the index file, so that it can borrow the code to clean things up upon signals and program termination. Signed-off-by: Junio C Hamano <junkio@cox.net>
* Correct force_write bug in refs.cShawn Pearce2006-05-19
| | | | | | | | | My earlier attempt at forcing a write for non-existant refs worked; it forced a write for pretty much all refs. This corrects the condition to only force a write for refs which don't exist yet. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Log ref updates made by fetch.Shawn Pearce2006-05-19
| | | | | | | | | | | | If a ref is changed by http-fetch, local-fetch or ssh-fetch record the change and the remote URL/name in the log for the ref. This requires loading the config file to check logAllRefUpdates. Also fixed a bug in the ref lock generation; the log file name was not being produced right due to a bad prefix length. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Force writing ref if it doesn't exist.Shawn Pearce2006-05-19
| | | | | | | | | Normally we try to skip writing a ref if its value hasn't changed but in the special case that the ref doesn't exist but the new value is going to be 0{40} then force writing the ref anyway. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* General ref log reading improvements.Shawn Pearce2006-05-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Corrected the log starting time displayed in the error message (as it was always showing the epoch due to a bad input to strtoul). Improved the log parser so we only scan backwards towards the '\n' from the end of the prior log; during this scan the last '>' is remembered to improve performance (rather than scanning forward to it). If the log record matched is the last log record in the file only use its new sha1 value if the date matches exactly; otherwise we leave the passed in sha1 alone as it already contains the current value of the ref. This way lookups of dates later than the log end to stick with the current ref value in case the ref was updated without logging. If it looks like someone changed the ref without logging it and we are going to return the sha1 which should have been valid during the missing period then warn the user that there might be log data missing and thus their query result may not be accurate. The check isn't perfect as its just based on comparing the old and new sha1 values between the two log records but its better than not checking at all. Implemented test cases based on git-rev-parse for most of the boundary conditions. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Fix ref log parsing so it works properly.Shawn Pearce2006-05-17
| | | | | | | | | The log parser was only ever matching the last log record due to calling strtoul on "> 1136091609" rather than " 1136091609". Also once a match for '@' has been found after the name of the ref there is no point in looking for another '@' within the remaining text. Signed-off-by: Junio C Hamano <junkio@cox.net>
* Support 'master@2 hours ago' syntaxShawn Pearce2006-05-17
| | | | | | | | | | | Extended sha1 expressions may now include date specifications which indicate a point in time within the local repository's history. If the ref indicated to the left of '@' has a log in $GIT_DIR/logs/<ref> then the value of the ref at the time indicated by the specification is obtained from the ref's log. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Log ref updates to logs/refs/<ref>Shawn Pearce2006-05-17
| | | | | | | | | | | | | | | | | | If config parameter core.logAllRefUpdates is true or the log file already exists then append a line to ".git/logs/refs/<ref>" whenever git-update-ref <ref> is executed. Each log line contains the following information: oldsha1 <SP> newsha1 <SP> committer <LF> where committer is the current user, date, time and timezone in the standard GIT ident format. If the caller is unable to append to the log file then git-update-ref will fail without updating <ref>. An optional message may be included in the log line with the -m flag. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Improve abstraction of ref lock/write.Shawn Pearce2006-05-17
| | | | | | | | | | | Created 'struct ref_lock' to contain the data necessary to perform a ref update. This change improves writing a ref as the file names are generated only once (rather than twice) and supports following symrefs (up to the maximum depth). Further the ref_lock structure provides room to extend the update API with ref logging. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Remove unnecessary local in get_ref_sha1.Shawn Pearce2006-05-17
| | | | | Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Add "--branches", "--tags" and "--remotes" options to git-rev-parse.Sean2006-05-14
| | | | | | | | | "git branch" uses "rev-parse --all" and becomes much too slow when there are many tags (it scans all refs). Use the new "--branches" option of rev-parse to speed things up. Signed-off-by: Sean Estabrooks <seanlkml@sympatico.ca> Signed-off-by: Junio C Hamano <junkio@cox.net>
* core.prefersymlinkrefs: use symlinks for .git/HEADJunio C Hamano2006-05-02
| | | | | | | | | When inspecting a project whose build infrastructure used to assume that .git/HEAD is a symlink ref, core.prefersymlinkrefs in the config file of such a project would help to bisect its history. Signed-off-by: Junio C Hamano <junkio@cox.net>
* refs.c::do_for_each_ref(): Finish error message lines with "\n"Junio C Hamano2006-03-09
| | | | | | | | | We used fprintf() to show an error message without terminating it with LF; use error() for that. cf. c401cb48e77459a4ccad76888ad31bef252facc5 Signed-off-by: Junio C Hamano <junkio@cox.net>
* Warn about invalid refsJohannes Schindelin2006-03-01
| | | | | Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Give no terminating LF to error() function.Junio C Hamano2006-02-22
| | | | Signed-off-by: Junio C Hamano <junkio@cox.net>
* Disable USE_SYMLINK_HEAD by defaultPavel Roskin2006-01-19
| | | | | | | | | | | Disable USE_SYMLINK_HEAD by default. Recommend using it only for compatibility with older software. Treat USE_SYMLINK_HEAD like other optional defines - check whether it's defined, not its value. Signed-off-by: Pavel Roskin <proski@gnu.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Revert "We do not like "HEAD" as a new branch name"Junio C Hamano2005-12-17
| | | | This reverts ee34518d629331dadd58b1a75294369d679eda8b commit.
* Revert "refs.c: off-by-one fix."Junio C Hamano2005-12-17
| | | | This reverts 06bf6ac4248e834a229027908d405f5e42ac96d7 commit.
* Forbid pattern maching characters in refnames.Junio C Hamano2005-12-16
| | | | | | by marking '?', '*', and '[' as bad_ref_char(). Signed-off-by: Junio C Hamano <junkio@cox.net>
* refs.c: off-by-one fix.Junio C Hamano2005-12-15
| | | | Signed-off-by: Junio C Hamano <junkio@cox.net>
* We do not like "HEAD" as a new branch nameJohannes Schindelin2005-12-15
| | | | | | | | | | | | | | This makes git-check-ref-format fail for "HEAD". Since the check is only executed when creating refs, the existing symbolic ref is safe. Otherwise these commands, most likely are pilot errors, would do pretty funky stuff: git checkout -b HEAD git pull . other:HEAD Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
* refs.c: make sure leading directories exist before writing a ref.Junio C Hamano2005-12-07
| | | | | | | Otherwise cloning a repository with hierarchical branch/tag over http would fail. Signed-off-by: Junio C Hamano <junkio@cox.net>
* Do not DWIM in userpath library under strict mode.Junio C Hamano2005-11-19
| | | | | | | | | | | | | This should force git-daemon administrator's job a bit harder because the exact paths need to be given in the whitelist, but at the same time makes the auditing easier. This moves validate_symref() from refs.c to path.c, because we need to link path.c with git-daemon for its "enter_repo()", but we do not want to link the daemon with the rest of git libraries and its requirements. Signed-off-by: Junio C Hamano <junkio@cox.net>
* Add config variable core.symrefsonlyJohannes Schindelin2005-11-15
| | | | | | | | | | | | | | | This allows you to force git to avoid symlinks for refs. Just add something like [core] symrefsonly = true to .git/config. Don´t forget to "git checkout your_branch", or it does not do anything... Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
* create_symref: if symlink fails, fall back to writing a "symbolic ref"Johannes Schindelin2005-10-25
| | | | | | | | | There are filesystems out there which do not understand symlinks, even if the OS is perfectly capable of writing them. So, do not fail right away, but try to write a symbolic ref first. If that fails, you can die(). Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
* git-check-ref-format: reject funny ref names.Junio C Hamano2005-10-15
| | | | | | | | | | | | | | Update check_ref_format() function to reject ref names that: * has a path component that begins with a ".", or * has a double dots "..", or * has ASCII control character, "~", "^", ":" or SP, anywhere, or * ends with a "/". Use it in 'git-checkout -b', 'git-branch', and 'git-tag' to make sure that newly created refs are well-formed. Signed-off-by: Junio C Hamano <junkio@cox.net>
* Unlocalized isspace and friendsLinus Torvalds2005-10-14
| | | | | | | | | Do our own ctype.h, just to get the sane semantics: we want locale-independence, _and_ we want the right signed behaviour. Plus we only use a very small subset of ctype.h anyway (isspace, isalpha, isdigit and isalnum). Signed-off-by: Junio C Hamano <junkio@cox.net>
* [PATCH] Fix symbolic ref validationJonas Fonseca2005-10-05
| | | | | | | Use the correct buffer when validating 'ref: refs/...' Signed-off-by: Jonas Fonseca <fonseca@diku.dk> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Add git-symbolic-refJunio C Hamano2005-10-01
| | | | | | | | | | | | | This adds the counterpart of git-update-ref that lets you read and create "symbolic refs". By default it uses a symbolic link to represent ".git/HEAD -> refs/heads/master", but it can be compiled to use the textfile symbolic ref. The places that did 'readlink .git/HEAD' and 'ln -s refs/heads/blah .git/HEAD' have been converted to use new git-symbolic-ref command, so that they can deal with either implementation. Signed-off-by: Junio C Hamano <junio@twinsun.com>
* Use resolve_ref() to implement read_ref().Junio C Hamano2005-10-01
| | | | | | | Symbolic refs are understood by resolve_ref(), so existing read_ref() users will automatically understand them as well. Signed-off-by: Junio C Hamano <junio@twinsun.com>
* [PATCH] Allow reading "symbolic refs" that point to other refsLinus Torvalds2005-10-01
| | | | | | | | | | | | | | | | This extends the ref reading to understand a "symbolic ref": a ref file that starts with "ref: " and points to another ref file, and thus introduces the notion of ref aliases. This is in preparation of allowing HEAD to eventually not be a symlink, but one of these symbolic refs instead. [jc: Linus originally required the prefix to be "ref: " five bytes and nothing else, but I changed it to allow and strip any number of leading whitespaces to match what update-ref.c does.] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* [PATCH] Make do_each_ref() follow symlinks.Matt Draisey2005-08-16
| | | | | | | | | | | | | | | | | | | Because there is no reason not to, and this makes things a bit safer when running "git prune". [jc: I do not necessarily agree with the reasoning of the original author that it is a good way to keep "git prune" from stomping on objects to have a symlink that points at .git/refs of the repository A in the .git/refs of the repository B when repository A borrows object database from repository B. For one thing, the object database that everybody borrows objects from may not even have its own .git/refs hierarchy. Come to think of it, maybe we should disallow symlink inside .git/refs hierarchy; we update the files there by creat/rename pair, so having symlinks would not work anyway when you do anything that would update them.] Signed-off-by: Junio C Hamano <junkio@cox.net>
* [PATCH] -Werror fixesTimo Sirainen2005-08-09
| | | | | | GCC's format __attribute__ is good for checking errors, especially with -Wformat=2 parameter. This fixes most of the reported problems against 2005-08-09 snapshot.
* Make "for_each_ref()" always use the "canonical" refname.Linus Torvalds2005-07-08
| | | | | | | | It always uses a git-relative pathname, ie "refs/heads/master" instead of ".git/refs/heads/master" or whatever your GIT_DIR might be. This way when we send refs back-and-forth between repositories, there's never any question about GIT_DIR on either side.
* Fix silly thinko in "head_ref()"Linus Torvalds2005-07-05
| | | | | It did a "for_each_ref()" in addition to the HEAD case, which was a left-over from an early broken test.
* Add "git_path()" and "head_ref()" helper functions.Linus Torvalds2005-07-05
| | | | | | | "git_path()" returns a static pathname pointer into the git directory using a printf-like format specifier. "head_ref()" works like "for_each_ref()", except for just the HEAD.
* Clean up output of "for_each_ref()" when GIT_DIR is "."Linus Torvalds2005-07-04
| | | | Remove the "./" at the head, it just looks much nicer.
* Fix up "for_each_ref()" to be more usable, and use it in git-fsck-cacheLinus Torvalds2005-07-03
| | | | | It needed to take the GIT_DIR information into account, something that the original receive-pack usage just never cared about.
* Generalize the "show each ref" code in receice-packLinus Torvalds2005-07-02
| | | | This turns it into a generic "do xyz for each ref" library function.
* [PATCH] Operations on refsDaniel Barkalow2005-06-06
This patch adds code to read a hash out of a specified file under {GIT_DIR}/refs/, and to write such files atomically and optionally with an compare and lock. Signed-off-by: Daniel Barkalow <barkalow@iabervon.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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