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2016-01-20Merge branch 'nd/ita-cleanup'Libravatar Junio C Hamano1-1/+1
Paths that have been told the index about with "add -N" are not quite yet in the index, but a few commands behaved as if they already are in a harmful way. * nd/ita-cleanup: grep: make it clear i-t-a entries are ignored add and use a convenience macro ce_intent_to_add() blame: remove obsolete comment
2015-11-20Remove get_object_hash.Libravatar brian m. carlson1-1/+1
Convert all instances of get_object_hash to use an appropriate reference to the hash member of the oid member of struct object. This provides no functional change, as it is essentially a macro substitution. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Jeff King <peff@peff.net>
2015-11-20Add several uses of get_object_hash.Libravatar brian m. carlson1-1/+1
Convert most instances where the sha1 member of struct object is dereferenced to use get_object_hash. Most instances that are passed to functions that have versions taking struct object_id, such as get_sha1_hex/get_oid_hex, or instances that can be trivially converted to use struct object_id instead, are not converted. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Jeff King <peff@peff.net>
2015-09-06add and use a convenience macro ce_intent_to_add()Libravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04cache-tree: introduce write_index_as_tree()Libravatar Paul Tan1-12/+17
A caller may wish to write a temporary index as a tree. However, write_cache_as_tree() assumes that the index was read from, and will write to, the default index file path. Introduce write_index_as_tree() which removes this limitation by allowing the caller to specify its own index_state and index file path. Signed-off-by: Paul Tan <pyokagan@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-11-06Merge branch 'jk/cache-tree-protect-from-broken-libgit2'Libravatar Junio C Hamano1-0/+2
The code to use cache-tree trusted the on-disk data too much and fell into an infinite loop. * jk/cache-tree-protect-from-broken-libgit2: cache-tree: avoid infinite loop on zero-entry tree
2014-10-30cache-tree: avoid infinite loop on zero-entry treeLibravatar Jeff King1-0/+2
The loop in cache-tree's update_one iterates over all the entries in the index. For each one, we find the cache-tree subtree which represents our path (creating it if necessary), and then recurse into update_one again. The return value we get is the number of index entries that belonged in that subtree. So for example, with entries: a/one a/two b/one We start by processing the first entry, "a/one". We would find the subtree for "a" and recurse into update_one. That would then handle "a/one" and "a/two", and return the value 2. The parent function then skips past the 2 handled entries, and we continue by processing "b/one". If the recursed-into update_one ever returns 0, then we make no forward progress in our loop. We would process "a/one" over and over, infinitely. This should not happen normally. Any subtree we create must have at least one path in it (the one that we are processing!). However, we may also reuse a cache-tree entry we found in the on-disk index. For the same reason, this should also never have zero entries. However, certain buggy versions of libgit2 could produce such bogus cache-tree records. The libgit2 bug has since been fixed, but it does not hurt to protect ourselves against bogus input coming from the on-disk data structures. Note that this is not a die("BUG") or assert, because it is not an internal bug, but rather a corrupted on-disk structure. It's possible that we could even recover from it (by throwing out the bogus cache-tree entry), but it is not worth the effort; the important thing is that we report an error instead of looping infinitely. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-10-01lockfile.h: extract new header file for the functions in lockfile.cLibravatar Michael Haggerty1-0/+1
Move the interface declaration for the functions in lockfile.c from cache.h to a new file, lockfile.h. Add #includes where necessary (and remove some redundant includes of cache.h by files that already include builtin.h). Move the documentation of the lock_file state diagram from lockfile.c to the new header file. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-11Merge branch 'dt/cache-tree-repair'Libravatar Junio C Hamano1-2/+17
Add a few more places in "commit" and "checkout" that make sure that the cache-tree is fully populated in the index. * dt/cache-tree-repair: cache-tree: do not try to use an invalidated subtree info to build a tree cache-tree: Write updated cache-tree after commit cache-tree: subdirectory tests test-dump-cache-tree: invalid trees are not errors cache-tree: create/update cache-tree on checkout
2014-09-03cache-tree: do not try to use an invalidated subtree info to build a treeLibravatar Junio C Hamano1-1/+6
We punt from repairing the cache-tree during a branch switching if it involves having to create a new tree object that does not yet exist in the object store. "mkdir dir && >dir/file && git add dir" followed by "git checkout" is one example, when a tree that records the state of such "dir/" is not in the object store. However, after discovering that we do not have a tree object that records the state of "dir/", the caller failed to remember the fact that it noticed the cache-tree entry it received for "dir/" is invalidated, it already knows it should not be populating the level that has "dir/" as its immediate subdirectory, and it is not an error at all for the sublevel cache-tree entry gave it a bogus object name it shouldn't even look at. This led the caller to detect and report a non-existent error. The end result was the same and we avoided stuffing a non-existent tree to the cache-tree, but we shouldn't have issued an alarming error message to the user. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-07-07cache-tree: create/update cache-tree on checkoutLibravatar David Turner1-1/+11
When git checkout checks out a branch, create or update the cache-tree so that subsequent operations are faster. update_main_cache_tree learned a new flag, WRITE_TREE_REPAIR. When WRITE_TREE_REPAIR is set, portions of the cache-tree which do not correspond to existing tree objects are invalidated (and portions which do are marked as valid). No new tree objects are created. Signed-off-by: David Turner <dturner@twitter.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-06-13cache-tree: mark istate->cache_changed on prime_cache_tree()Libravatar Nguyễn Thái Ngọc Duy1-4/+5
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-06-13cache-tree: mark istate->cache_changed on cache tree updateLibravatar Nguyễn Thái Ngọc Duy1-14/+11
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-06-13cache-tree: mark istate->cache_changed on cache tree invalidationLibravatar Nguyễn Thái Ngọc Duy1-4/+11
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-06-13read-cache: new API write_locked_index instead of write_index/write_cacheLibravatar Nguyễn Thái Ngọc Duy1-2/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-18Merge branch 'rm/strchrnul-not-strlen'Libravatar Junio C Hamano1-4/+3
* rm/strchrnul-not-strlen: use strchrnul() in place of strchr() and strlen()
2014-03-18Merge branch 'mh/simplify-cache-tree-find'Libravatar Junio C Hamano1-10/+7
* mh/simplify-cache-tree-find: cache_tree_find(): use path variable when passing over slashes cache_tree_find(): remove early return cache_tree_find(): remove redundant check cache_tree_find(): fix comment formatting cache_tree_find(): find the end of path component using strchrnul() cache_tree_find(): remove redundant checks
2014-03-10use strchrnul() in place of strchr() and strlen()Libravatar Rohit Mani1-9/+6
Avoid scanning strings twice, once with strchr() and then with strlen(), by using strchrnul(). Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Rohit Mani <rohit.mani@outlook.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-05cache_tree_find(): use path variable when passing over slashesLibravatar Michael Haggerty1-2/+3
The search for the end of the slashes is part of the update of the path variable for the next iteration as opposed to an update of the slash variable. So iterate using path rather than slash. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-05cache_tree_find(): remove early returnLibravatar Michael Haggerty1-2/+0
There is no need for an early return it; from the loop if slash points at the end of the string, because that is exactly what will happen when the while condition fails at the start of the next iteration. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-05cache_tree_find(): remove redundant checkLibravatar Michael Haggerty1-1/+1
If *slash == '/', then it is necessarily non-NUL. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-05cache_tree_find(): fix comment formattingLibravatar Michael Haggerty1-2/+3
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-05cache_tree_find(): find the end of path component using strchrnul()Libravatar Michael Haggerty1-3/+1
Suggested-by: Junio Hamano <gitster@pobox.com> Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-05cache_tree_find(): remove redundant checksLibravatar Michael Haggerty1-4/+3
slash is initialized to a value that cannot be NULL. So remove the guards against slash == NULL later in the loop. Suggested-by: David Kastrup <dak@gnu.org> Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-03cache-tree.c: use ALLOC_GROW() in find_subtree()Libravatar Dmitry S. Dolzhenko1-5/+1
Signed-off-by: Dmitry S. Dolzhenko <dmitrys.dolzhenko@yandex.ru> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-09Convert "struct cache_entry *" to "const ..." wherever possibleLibravatar Nguyễn Thái Ngọc Duy1-9/+10
I attempted to make index_state->cache[] a "const struct cache_entry **" to find out how existing entries in index are modified and where. The question I have is what do we do if we really need to keep track of on-disk changes in the index. The result is - diff-lib.c: setting CE_UPTODATE - name-hash.c: setting CE_HASHED - preload-index.c, read-cache.c, unpack-trees.c and builtin/update-index: obvious - entry.c: write_entry() may refresh the checked out entry via fill_stat_cache_info(). This causes "non-const struct cache_entry *" in builtin/apply.c, builtin/checkout-index.c and builtin/checkout.c - builtin/ls-files.c: --with-tree changes stagemask and may set CE_UPDATE Of these, write_entry() and its call sites are probably most interesting because it modifies on-disk info. But this is stat info and can be retrieved via refresh, at least for porcelain commands. Other just uses ce_flags for local purposes. So, keeping track of "dirty" entries is just a matter of setting a flag in index modification functions exposed by read-cache.c. Except unpack-trees, the rest of the code base does not do anything funny behind read-cache's back. The actual patch is less valueable than the summary above. But if anyone wants to re-identify the above sites. Applying this patch, then this: diff --git a/cache.h b/cache.h index 430d021..1692891 100644 --- a/cache.h +++ b/cache.h @@ -267,7 +267,7 @@ static inline unsigned int canon_mode(unsigned int mode) #define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1) struct index_state { - struct cache_entry **cache; + const struct cache_entry **cache; unsigned int version; unsigned int cache_nr, cache_alloc, cache_changed; struct string_list *resolve_undo; will help quickly identify them without bogus warnings. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-15cache-tree: invalidate i-t-a paths after generating treesLibravatar Nguyễn Thái Ngọc Duy1-2/+12
Intent-to-add entries used to forbid writing trees so it was not a problem. After commit 3f6d56d (commit: ignore intent-to-add entries instead of refusing - 2012-02-07), we can generate trees from an index with i-t-a entries. However, the commit forgets to invalidate all paths leading to i-t-a entries. With fully valid cache-tree (e.g. after commit or write-tree), diff operations may prefer cache-tree to index and not see i-t-a entries in the index, because cache-tree does not have them. Reported-by: Jonathon Mah <me@JonathonMah.com> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-15cache-tree: fix writing cache-tree when CE_REMOVE is presentLibravatar Nguyễn Thái Ngọc Duy1-7/+23
entry_count is used in update_one() for two purposes: 1. to skip through the number of processed entries in in-memory index 2. to record the number of entries this cache-tree covers on disk Unfortunately when CE_REMOVE is present these numbers are not the same because CE_REMOVE entries are automatically removed before writing to disk but entry_count is not adjusted and still counts CE_REMOVE entries. Separate the two use cases into two different variables. #1 is taken care by the new field count in struct cache_tree_sub and entry_count is prepared for #2. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-15cache-tree: replace "for" loops in update_one with "while" loopsLibravatar Nguyễn Thái Ngọc Duy1-5/+10
The loops in update_one can be increased in two different ways: step by one for files and by <n> for directories. "for" loop is not suitable for this as it always steps by one and special handling is required for directories. Replace them with "while" loops for clarity. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-15cache-tree: remove dead i-t-a code in verify_cache()Libravatar Nguyễn Thái Ngọc Duy1-6/+2
This code is added in 331fcb5 (git add --intent-to-add: do not let an empty blob be committed by accident - 2008-11-28) to forbid committing when i-t-a entries are present. When we allow that, we forgot to remove this. Noticed-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-12Merge branch 'nd/cache-tree-api-refactor'Libravatar Junio C Hamano1-15/+12
* nd/cache-tree-api-refactor: cache-tree: update API to take abitrary flags
2012-02-12Merge branch 'jc/maint-commit-ignore-i-t-a'Libravatar Junio C Hamano1-3/+3
* jc/maint-commit-ignore-i-t-a: commit: ignore intent-to-add entries instead of refusing Conflicts: cache-tree.c
2012-02-07cache-tree: update API to take abitrary flagsLibravatar Nguyễn Thái Ngọc Duy1-15/+12
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-07commit: ignore intent-to-add entries instead of refusingLibravatar Junio C Hamano1-3/+3
Originally, "git add -N" was introduced to help users from forgetting to add new files to the index before they ran "git commit -a". As an attempt to help them further so that they do not forget to say "-a", "git commit" to commit the index as-is was taught to error out, reminding the user that they may have forgotten to add the final contents of the paths before running the command. This turned out to be a false "safety" that is useless. If the user made changes to already tracked paths and paths added with "git add -N", and then ran "git add" to register the final contents of the paths added with "git add -N", "git commit" will happily create a commit out of the index, without including the local changes made to the already tracked paths. It was not a useful "safety" measure to prevent "forgetful" mistakes from happening. It turns out that this behaviour is not just a useless false "safety", but actively hurts use cases of "git add -N" that were discovered later and have become popular, namely, to tell Git to be aware of these paths added by "git add -N", so that commands like "git status" and "git diff" would include them in their output, even though the user is not interested in including them in the next commit they are going to make. Fix this ancient UI mistake, and instead make a commit from the index ignoring the paths added by "git add -N" without adding real contents. Based on the work by Nguyễn Thái Ngọc Duy, and helped by injection of sanity from Jonathan Nieder and others on the Git mailing list. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-06Refactor cache_tree_update idiom from commitLibravatar Thomas Rast1-4/+15
We'll need to safely create or update the cache-tree data of the_index from other places. While at it, give it an argument that lets us silence the messages produced by unmerged entries (which prevent it from working). Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-09-06cache_tree_free: Fix small memory leakLibravatar Elijah Newren1-1/+3
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-11write-tree: Avoid leak when index refers to an invalid objectLibravatar Jonathan Nieder1-1/+3
Noticed by valgrind during test t0000.35 “writing this tree without --missing-ok”. Even in the cherry-pick foo..bar code path, such an error is the end of the line. But maybe some day an interactive porcelain will want to link to libgit, making this matter. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-14Improve on the 'invalid object' error message at commit timeLibravatar Linus Torvalds1-1/+2
Not that anybody should ever get it, but somebody did (probably because of a flaky filesystem, but whatever). And each time I see an error message that I haven't seen before, I decide that next time it will look better. So this makes us write more relevant information about exactly which file ended up having issues with a missing object. Which will tell whether it was a tree object, for example, or just a regular file in the index (and which one). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-25Optimize "diff-index --cached" using cache-treeLibravatar Junio C Hamano1-0/+32
When running "diff-index --cached" after making a change to only a small portion of the index, there is no point unpacking unchanged subtrees into the index recursively, only to find that all entries match anyway. Tweak unpack_trees() logic that is used to read in the tree object to catch the case where the tree entry we are looking at matches the index as a whole by looking at the cache-tree. As an exercise, after modifying a few paths in the kernel tree, here are a few numbers on my Athlon 64X2 3800+: (without patch, hot cache) $ /usr/bin/time git diff --cached --raw :100644 100644 b57e1f5... e69de29... M Makefile :100644 000000 8c86b72... 0000000... D arch/x86/Makefile :000000 100644 0000000... e69de29... A arche 0.07user 0.02system 0:00.09elapsed 102%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+9407minor)pagefaults 0swaps (with patch, hot cache) $ /usr/bin/time ../git.git/git-diff --cached --raw :100644 100644 b57e1f5... e69de29... M Makefile :100644 000000 8c86b72... 0000000... D arch/x86/Makefile :000000 100644 0000000... e69de29... A arche 0.02user 0.00system 0:00.02elapsed 103%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+2446minor)pagefaults 0swaps Cold cache numbers are very impressive, but it does not matter very much in practice: (without patch, cold cache) $ su root sh -c 'echo 3 >/proc/sys/vm/drop_caches' $ /usr/bin/time git diff --cached --raw :100644 100644 b57e1f5... e69de29... M Makefile :100644 000000 8c86b72... 0000000... D arch/x86/Makefile :000000 100644 0000000... e69de29... A arche 0.06user 0.17system 0:10.26elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k 247032inputs+0outputs (1172major+8237minor)pagefaults 0swaps (with patch, cold cache) $ su root sh -c 'echo 3 >/proc/sys/vm/drop_caches' $ /usr/bin/time ../git.git/git-diff --cached --raw :100644 100644 b57e1f5... e69de29... M Makefile :100644 000000 8c86b72... 0000000... D arch/x86/Makefile :000000 100644 0000000... e69de29... A arche 0.02user 0.01system 0:01.01elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k 18440inputs+0outputs (79major+2369minor)pagefaults 0swaps This of course helps "git status" as well. (without patch, hot cache) $ /usr/bin/time ../git.git/git-status >/dev/null 0.17user 0.18system 0:00.35elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+5336outputs (0major+10970minor)pagefaults 0swaps (with patch, hot cache) $ /usr/bin/time ../git.git/git-status >/dev/null 0.10user 0.16system 0:00.27elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+5336outputs (0major+3921minor)pagefaults 0swaps Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-25cache-tree.c::cache_tree_find(): simplify internal APILibravatar Junio C Hamano1-0/+2
Earlier cache_tree_find() needs to be called with a valid cache_tree, but repeated look-up may find an invalid or missing cache_tree in between. Help simplify the callers by returning NULL to mean "nothing appropriate found" when the input is NULL. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-20write-tree --ignore-cache-treeLibravatar Junio C Hamano1-3/+7
This allows you to discard the cache-tree information before writing the tree out of the index (i.e. it always recomputes the tree object names for all the subtrees). This is only useful as a debug option, so I did not bother documenting it. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-20Move prime_cache_tree() to cache-tree.cLibravatar Junio C Hamano1-0/+34
The interface to build cache-tree belongs there. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-30git add --intent-to-add: do not let an empty blob be committed by accidentLibravatar Junio C Hamano1-3/+7
Writing a tree out of an index with an "intent to add" entry is blocked. This implies that you cannot "git commit" from such a state; however you can still do "git commit -a" or "git commit $that_path". Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-16cache-tree.c: make cache_tree_find() staticLibravatar Nanako Shiraishi1-1/+1
This function is not used by any other file. Signed-off-by: Nanako Shiraishi <nanako3@lavabit.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-24Merge branch 'maint-1.5.4' into maintLibravatar Junio C Hamano1-2/+5
* maint-1.5.4: t5516: remove ambiguity test (1) Linked glossary from cvs-migration page write-tree: properly detect failure to write tree objects
2008-04-23write-tree: properly detect failure to write tree objectsLibravatar Junio C Hamano1-2/+5
Tomasz Fortuna reported that "git commit" does not error out properly when it cannot write tree objects out. "git write-tree" shares the same issue, as the failure to notice the error is deep in the logic to write tree objects out recursively. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-11Merge branch 'jc/error-message-in-cherry-pick'Libravatar Junio C Hamano1-0/+55
* jc/error-message-in-cherry-pick: Make error messages from cherry-pick/revert more sensible
2008-02-05Make error messages from cherry-pick/revert more sensibleLibravatar Junio C Hamano1-0/+55
The original "rewrite in C" did somewhat a sloppy job while stealing code from git-write-tree. The caller pretends as if the write_tree() function would return an error code and being able to issue a sensible error message itself, but write_tree() function just calls die() and never returns an error. Worse yet, the function claims that it was running git-write-tree (which is no longer true after cherry-pick stole it). Tested-by: Björn Steinbrink <B.Steinbrink@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-21Make on-disk index representation separate from in-core oneLibravatar Linus Torvalds1-2/+2
This converts the index explicitly on read and write to its on-disk format, allowing the in-core format to contain more flags, and be simpler. In particular, the in-core format is now host-endian (as opposed to the on-disk one that is network endian in order to be able to be shared across machines) and as a result we can dispense with all the htonl/ntohl on accesses to the cache_entry fields. This will make it easier to make use of various temporary flags that do not exist in the on-disk format. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-09-26Small cache_tree_write refactor.Libravatar Pierre Habouzit1-14/+5
This function cannot fail, make it void. Also make write_one act on a const char* instead of a char*. Signed-off-by: Pierre Habouzit <madcoder@debian.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>