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Cogito wants to be able to do some initial commit at the time of cg-init,
which may be empty in case when cg-init is called in an empty tree.
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Kay Sievers noticed that you can have both path and path/file in
the cache and write-tree happily creates a tree object from such
a state. Since a merge can result in such situation and the
user should be able to see the situation by looking at the
cache, rather than forbidding add_cache_entry() to create such
conflicts, fix it by making write-tree refuse to write such an
nonsensical tree. Here is a test case.
-- test case --
$ ls -a
./ ../
$ git-init-db
defaulting to local storage area
$ date >path
$ git-update-cache --add path
$ rm path
$ mkdir path
$ date >path/file
$ git-update-cache --add path/file
$ git-ls-files --stage
100644 1738f2536b1201218c41153941da065cc26174c9 0 path
100644 620c72f1c1de15f56ff9d63d6d7cdc69e828f1e3 0 path/file
$ git-ls-tree $(git-write-tree) ;# using old one
100644 blob 1738f2536b1201218c41153941da065cc26174c9 path
040000 tree ec116937f223e3df95aeac9f076902ae1618ae98 path
$ ../git-write-tree ;# using new one
You have both path and path/file
fatal: write-tree: not able to write tree
$ exit
Signed-off-by: Junio C Hamano <junkio@cox.net>
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Introduce xmalloc and xrealloc to die gracefully with a descriptive
message when out of memory, rather than taking a SIGSEGV.
Signed-off-by: Christopher Li<chrislgit@chrisli.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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The write function now adds the header to the file by itself, so there
is no reason to duplicate it among all the users any more.
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Fix a memory leak in write-tree.c, not freeing the directory buffer.
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Of course, we can't even generate such an index yet, but give me
some time. This is a cunning plan. Let's see if it actually works.
(I feel like Wile E Coyote, waiting for the big rock to fall).
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This allows using a git tree over NFS with different byte order, and
makes it possible to just copy a fully populated repository and have
the end result immediately usable (needing just a refresh to update
the stat information).
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Now there is error() for "library" errors and die() for fatal "application"
errors. usage() is now used strictly only for usage errors.
Signed-off-by: Petr Baudis <pasky@ucw.cz>
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It now requires the "--add" flag before you add any new files, and
a "--remove" file if you want to mark files for removal. And giving
it the "--refresh" flag makes it just update all the files that it
already knows about.
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It's got some debugging printouts etc still in it, but testing on the
kernel seems to show that it does indeed fix the issue with huge tree
files for each commit.
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And fix up the warnings that it pointed out. Let's keep the tree
clean from early on.
Not that the code is very beautiful anyway ;)
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The tool interface sucks (especially "committing" information, which is just
me doing everything by hand from the command line), but I think this is in
theory actually a viable way of describing the world. So copyright it.
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Petr Baudis
Junio C Hamano
Christopher Li
Linus Torvalds
Brad Roberts