kernel/git - git - PowerEL Git System

Commit Graph

Author	SHA1	Message	Date
Andy Parkins	8d2244ba74	Make git-prune submodule aware (and fix a SEGFAULT in the process) I ran git-prune on a repository and got this: $ git-prune error: Object 228f8065b930120e35fc0c154c237487ab02d64a is a blob, not a commit Segmentation fault (core dumped) This repository was a strange one in that it was being used to provide its own submodule. That is, the repository was cloned into a subdirectory, an independent branch checked out in that subdirectory, and then it was marked as a submodule. git-prune then failed in the above manner. The problem was that git-prune was not submodule aware in two areas. Linus said: > So what happens is that something traverses a tree object, looks at each > entry, sees that it's not a tree, and tries to look it up as a blob. But > subprojects are commits, not blobs, and then when you look at the object > more closely, you get the above kind of object type confusion. and included a patch to add an S_ISGITLINK() test to reachable.c's process_tree() function. That fixed the first git-prune error, and stopped it from trying to process the gitlink entries in trees as if they were pointers to other trees (and of course failing, because gitlinks _aren't_ trees). That part of this patch is his. The second area is add_cache_refs(). This is called before starting the reachability analysis, and was calling lookup_blob() on every object hash found in the index. However, it is no longer true that every hash in the index is a pointer to a blob, some of them are gitlinks, and are not backed by any object at all, they are commits in another repository. Normally this bug was not causing any problems, but in the case of the self-referencing repository described above, it meant that the gitlink hash was being marked as being of type OBJ_BLOB by add_cache_refs() call to lookup_blob(). Then later, because that hash was also pointed to by a ref, add_one_ref() would treat it as a commit; lookup_commit() would return a NULL because that object was already noted as being an OBJ_BLOB, not an OBJ_COMMIT; and parse_commit_buffer() would SEGFAULT on that NULL pointer. The fix made by this patch is to not blindly call lookup_blob() in reachable.c's add_cache_refs(), and instead skip any index entries that are S_ISGITLINK(). Signed-off-by: Andy Parkins <andyparkins@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	18 years ago
Linus Torvalds	6fda5e5180	Initialize tree descriptors with a helper function rather than by hand. This removes slightly more lines than it adds, but the real reason for doing this is that future optimizations will require more setup of the tree descriptor, and so we want to do it in one place. Also renamed the "desc.buf" field to "desc.buffer" just to trigger compiler errors for old-style manual initializations, making sure I didn't miss anything. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Nicolas Pitre	eb8381c885	scan reflogs independently from refs Currently, the search for all reflogs depends on the existence of corresponding refs under the .git/refs/ directory. Let's scan the .git/logs/ directory directly instead. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Johannes Schindelin	883d60fa97	Sanitize for_each_reflog_ent() It used to ignore the return value of the helper function; now, it expects it to return 0, and stops iteration upon non-zero return values; this value is then passed on as the return value of for_each_reflog_ent(). Further, it makes no sense to force the parsing upon the helper functions; for_each_reflog_ent() now calls the helper function with old and new sha1, the email, the timestamp & timezone, and the message. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	94421474e0	Move traversal of reachable objects into a separate library. This moves major part of builtin-prune into a separate file, reachable.c. It is used to mark the objects that are reachable from refs, and optionally from reflogs. The patch looks very large, but if you look at it with diff -C, which this message is formatted in, most of them are copied lines and there are very little additions. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	ca4f293fb4	builtin-prune: separate ref walking from reflog walking. This is necessary for the next step, because the reason I am making the connectivity walker into a library is because I want to use it for cleaning up stale reflog entries. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	2430481614	builtin-prune: make file-scope static struct to an argument. I want to make the first part of 'git prune' that marks the reachable objects callable as a library, so this starts the first step toward the goal by making the callchain to pass rev_info structure as an argument. No functionality change should be in this step. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	16157b8074	builtin-prune: memory diet. Somehow we forgot to turn save_commit_buffer off while walking the reachable objects. Releasing the memory for commit object data that we do not use matters for large projects (for example, about 90MB is saved while traversing linux-2.6 history). Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	55dd55263b	Protect commits recorded in reflog from pruning. This teaches fsck-objects and prune to protect objects referred to by reflog entries. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	ac1471b39f	Typefix builtin-prune.c::prune_object() It passed (const char) to a function that took a (char ); the buffer itself was of course writable, so pass the buffer itself. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Andy Parkins	21f88ac84a	Improve git-prune -n output prune_object() in show_only mode would previously just show the path to the object that would be deleted. The path the object is stored in shouldn't be shown to users, they only know about sha1 identifiers so show that instead. Further, the sha1 alone isn't that useful for examining what is going to be deleted. This patch also adds the object type to the output, which makes it easy to pick out, say, the commits and use git-show to display them. Signed-off-by: Andy Parkins <andyparkins@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
J. Bruce Fields	2eb53e65bd	Make prune also run prune-packed Both the git-prune manpage and everday.txt say that git-prune should also prune unpacked objects that are also found in packs, by running git prune-packed. Junio thought this was "a regression when prune was rewritten as a built-in." So modify prune to call prune-packed again. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>	18 years ago
Junio C Hamano	8da1977554	Tell between packed, unpacked and symbolic refs. This adds a "int *flag" parameter to resolve_ref() and makes for_each_ref() family to call callback function with an extra "int flag" parameter. They are used to give two bits of information (REF_ISSYMREF and REF_ISPACKED) about the ref. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	cb5d709ff8	Add callback data to for_each_ref() family. This is a long overdue fix to the API for for_each_ref() family of functions. It allows the callers to specify a callback data pointer, so that the caller does not have to use static variables to communicate with the callback funciton. The updated for_each_ref() family takes a function of type int (fn)(const char , const unsigned char , void ) and a void pointer as parameters, and calls the function with the name of the ref and its SHA-1 with the caller-supplied void pointer as parameters. The commit updates two callers, builtin-name-rev.c and builtin-pack-refs.c as an example. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Shawn Pearce	9befac470b	Replace uses of strdup with xstrdup. Like xmalloc and xrealloc xstrdup dies with a useful message if the native strdup() implementation returns NULL rather than a valid pointer. I just tried to use xstrdup in new code and found it to be missing. However I expected it to be present as xmalloc and xrealloc are already commonly used throughout the code. [jc: removed the part that deals with last_XXX, which I am finding more and more dubious these days.] Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
David Rientjes	96f1e58f52	remove unnecessary initializations [jc: I needed to hand merge the changes to the updated codebase, so the result needs to be checked.] Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	cba05fa840	Further clean-up: usage() vs die() This hopefully finishes the clean-up Ramsay started with recent commit `15e593e4d3` and commit `8cdf33643d`. Signed-off-by: Junio C Hamano <junkio@cox.net>	19 years ago
Linus Torvalds	a633fca0c0	Call setup_git_directory() much earlier This changes the calling convention of built-in commands and passes the "prefix" (i.e. pathname of $PWD relative to the project root level) down to them. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>	19 years ago
Linus Torvalds	db6296a566	Call setup_git_directory() early Any git command that expects to work in a subdirectory of a project, and that reads the git config files (which is just about all of them) needs to make sure that it does the "setup_git_directory()" call before it tries to read the config file. This means, among other things, that we need to move the call out of "init_revisions()", and into the caller. This does the mostly trivial conversion to do that. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>	19 years ago
Junio C Hamano	e5a78b1ca8	builtin-prune.c: forgot TYPE => OBJ changes. Signed-off-by: Junio C Hamano <junkio@cox.net>	19 years ago
Linus Torvalds	ba84a797e7	builtin "git prune" This actually removes the objects to be pruned, unless you specify "-n" (at which point it will just tell you which files it would prune). This doesn't do the pack-file pruning that the shell-script used to do, but if somebody really wants to, they could add it easily enough. I wonder how useful it is, though, considering that "git repack -a -d" is just a lot more efficient and generates a better end result. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>	19 years ago

6 Commits (e4465f0e71cc389a26bcf7474ad12112f683f633)