git/builtin
Jeff King ee0e38727f clone: initialize atexit cleanup handler earlier
If clone fails, we generally try to clean up any directories
we've created. We do this by installing an atexit handler,
so that we don't have to manually trigger cleanup. However,
since we install this after touching the filesystem, any
errors between our initial mkdir() and our atexit() call
will result in us leaving a crufty directory around.

We can fix this by moving our atexit() call earlier. It's OK
to do it before the junk_work_tree variable is set, because
remove_junk makes sure the variable is initialized. This
means we "activate" the handler by assigning to the
junk_work_tree variable, which we now bump down to just
after we call mkdir(). We probably do not want to do it
before, because a plausible reason for mkdir() to fail is
EEXIST (i.e., we are racing with another "git init"), and we
would not want to remove their work.

OTOH, this is probably not that big a deal; we will allow
cloning into an empty directory (and skip the mkdir), which
is already racy (i.e., one clone may see the other's empty
dir and start writing into it). Still, it does not hurt to
err on the side of caution here.

Note that writing into junk_work_tree and junk_git_dir after
installing the handler is also technically racy, as we call
our handler on an async signal.  Depending on the platform,
we could see a sheared write to the variables. Traditionally
we have not worried about this, and indeed we already do
this later in the function. If we want to address that, it
can come as a separate topic.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-03-19 13:38:07 -07:00
..
add.c Merge branch 'fr/add-interactive-argv-array' 2014-03-28 13:51:05 -07:00
annotate.c annotate: use argv_array 2014-07-16 11:10:11 -07:00
apply.c use xmemdupz() to allocate copies of strings given by start and length 2014-07-21 10:37:02 -07:00
archive.c replace {pre,suf}fixcmp() with {starts,ends}_with() 2013-12-05 14:13:21 -08:00
bisect--helper.c Replace deprecated OPT_BOOLEAN by OPT_BOOL 2013-08-05 11:32:19 -07:00
blame.c move setting of object->type to alloc_* functions 2014-07-28 10:14:33 -07:00
branch.c use wildmatch() directly without fnmatch() wrapper 2014-02-20 14:15:46 -08:00
bundle.c
cat-file.c Merge branch 'jk/warn-on-object-refname-ambiguity' 2014-03-25 11:07:36 -07:00
check-attr.c Merge branch 'jc/check-attr-honor-working-tree' into maint 2014-03-18 14:03:03 -07:00
check-ignore.c Merge branch 'dw/check-ignore-sans-index' 2013-09-20 12:37:32 -07:00
check-mailmap.c builtin: add git-check-mailmap command 2013-07-13 10:19:37 -07:00
check-ref-format.c
checkout-index.c Merge branch 'nd/lift-path-max' 2013-10-30 12:10:56 -07:00
checkout.c Merge branch 'jl/nor-or-nand-and' into maint 2014-04-09 12:03:26 -07:00
clean.c use xcalloc() to allocate zero-initialized memory 2014-07-21 10:30:21 -07:00
clone.c clone: initialize atexit cleanup handler earlier 2015-03-19 13:38:07 -07:00
column.c replace {pre,suf}fixcmp() with {starts,ends}_with() 2013-12-05 14:13:21 -08:00
commit-tree.c commit_tree: take a pointer/len pair rather than a const strbuf 2014-06-12 10:29:41 -07:00
commit.c Merge branch 'jk/commit-buffer-length' into maint 2014-07-16 11:16:38 -07:00
config.c config: teach "git config --file -" to read from the standard input 2014-02-18 16:12:14 -08:00
count-objects.c count-objects: add -H option to humanize sizes 2013-04-10 13:27:26 -07:00
credential.c
describe.c Merge branch 'nd/no-more-fnmatch' 2014-03-14 14:25:31 -07:00
diff-files.c convert read_cache_preload() to take struct pathspec 2013-07-15 10:56:08 -07:00
diff-index.c convert read_cache_preload() to take struct pathspec 2013-07-15 10:56:08 -07:00
diff-tree.c diff-tree: avoid lookup_unknown_object 2014-07-28 10:14:34 -07:00
diff.c Merge branch 'tg/diff-no-index-refactor' 2013-12-27 14:58:17 -08:00
fast-export.c commit: record buffer length in cache 2014-06-13 12:09:38 -07:00
fetch-pack.c Merge branch 'nd/shallow-clone' 2014-01-17 12:21:20 -08:00
fetch.c Merge branch 'ep/varscope' 2014-02-27 14:01:30 -08:00
fmt-merge-msg.c commit: record buffer length in cache 2014-06-13 12:09:38 -07:00
for-each-ref.c use wildmatch() directly without fnmatch() wrapper 2014-02-20 14:15:46 -08:00
fsck.c provide a helper to free commit buffer 2014-06-13 12:07:47 -07:00
gc.c Merge branch 'nd/daemonize-gc' into maint 2014-06-25 11:47:36 -07:00
get-tar-commit-id.c stop installing git-tar-tree link 2013-12-03 12:35:22 -08:00
grep.c Merge branch 'sk/spawn-less-case-insensitively-from-grep-O-i' into maint 2014-06-25 11:47:49 -07:00
hash-object.c hash-object: replace stdin parsing OPT_BOOLEAN by OPT_COUNTUP 2013-08-07 08:30:55 -07:00
help.c builtin/help.c: speed up is_git_command() by checking for builtin commands first 2014-01-06 11:26:31 -08:00
index-pack.c use xcalloc() to allocate zero-initialized memory 2014-07-21 10:30:21 -07:00
init-db.c i18n: only extract comments marked with "TRANSLATORS:" 2014-04-17 11:09:56 -07:00
log.c Merge branch 'jk/commit-buffer-length' into maint 2014-07-16 11:16:38 -07:00
ls-files.c pathspec: pass directory indicator to match_pathspec_item() 2014-02-24 14:37:19 -08:00
ls-remote.c builtin/ls-remote.c: rearrange xcalloc arguments 2014-05-27 14:00:43 -07:00
ls-tree.c pathspec: rename match_pathspec_depth() to match_pathspec() 2014-02-24 14:37:14 -08:00
mailinfo.c Merge branch 'rs/mailinfo-header-cmp' into maint 2014-06-25 11:48:23 -07:00
mailsplit.c mailsplit: sort maildir filenames more cleverly 2013-03-02 22:52:44 -08:00
merge-base.c Merge branch 'bm/merge-base-octopus-dedup' into maint 2014-02-13 13:38:59 -08:00
merge-file.c Replace deprecated OPT_BOOLEAN by OPT_BOOL 2013-08-05 11:32:19 -07:00
merge-index.c Convert "struct cache_entry *" to "const ..." wherever possible 2013-07-09 09:12:48 -07:00
merge-ours.c
merge-recursive.c replace {pre,suf}fixcmp() with {starts,ends}_with() 2013-12-05 14:13:21 -08:00
merge-tree.c merge-tree: handle directory/empty conflict correctly 2013-05-06 22:17:00 -07:00
merge.c commit_tree: take a pointer/len pair rather than a const strbuf 2014-06-12 10:29:41 -07:00
mktag.c
mktree.c builtin/mktree.c: use ALLOC_GROW() in append_to_tree() 2014-03-03 14:54:45 -08:00
mv.c Merge branch 'dt/merge-recursive-case-insensitive' into maint 2014-06-25 11:48:34 -07:00
name-rev.c use wildmatch() directly without fnmatch() wrapper 2014-02-20 14:15:46 -08:00
notes.c parse-options: multi-word argh should use dash to separate words 2014-03-24 10:43:34 -07:00
pack-objects.c Merge branch 'jk/pack-bitmap' 2014-04-08 12:00:33 -07:00
pack-redundant.c Fix sizeof usage in get_permutations 2012-12-13 11:13:44 -08:00
pack-refs.c pack-refs: merge code from pack-refs.{c,h} into refs.{c,h} 2013-05-01 15:33:11 -07:00
patch-id.c
prune-packed.c i18n: mark all progress lines for translation 2014-02-24 09:08:37 -08:00
prune.c Merge branch 'mh/replace-refs-variable-rename' 2014-03-14 14:27:06 -07:00
push.c Merge branch 'cc/starts-n-ends-with-endgame' 2014-03-07 15:18:28 -08:00
read-tree.c C: have space around && and || operators 2013-10-16 10:26:39 -07:00
receive-pack.c shallow: automatically clean up shallow tempfiles 2014-02-27 12:07:13 -08:00
reflog.c use wildmatch() directly without fnmatch() wrapper 2014-02-20 14:15:46 -08:00
remote-ext.c
remote-fd.c
remote.c Merge branch 'bg/xcalloc-nmemb-then-size' into maint 2014-07-22 10:25:17 -07:00
repack.c Merge branch 'jk/repack-pack-keep-objects' into maint 2014-07-10 11:10:05 -07:00
replace.c Merge branch 'mh/replace-refs-variable-rename' 2014-03-14 14:27:06 -07:00
rerere.c rerere: fix for merge.conflictstyle 2014-04-30 10:30:02 -07:00
reset.c convert logmsg_reencode to get_commit_buffer 2014-06-13 12:08:17 -07:00
rev-list.c commit: record buffer length in cache 2014-06-13 12:09:38 -07:00
rev-parse.c rev-parse --parseopt: option argument name hints 2014-03-23 17:28:03 -07:00
revert.c parse-options: multi-word argh should use dash to separate words 2014-03-24 10:43:34 -07:00
rm.c Merge branch 'nd/submodule-pathspec-ending-with-slash' 2014-02-27 14:01:15 -08:00
send-pack.c Merge branch 'nd/shallow-clone' 2014-01-17 12:21:20 -08:00
shortlog.c replace {pre,suf}fixcmp() with {starts,ends}_with() 2013-12-05 14:13:21 -08:00
show-branch.c use wildmatch() directly without fnmatch() wrapper 2014-02-20 14:15:46 -08:00
show-ref.c replace {pre,suf}fixcmp() with {starts,ends}_with() 2013-12-05 14:13:21 -08:00
stripspace.c builtin/stripspace.c: fix broken indentation 2013-09-06 13:33:17 -07:00
symbolic-ref.c replace {pre,suf}fixcmp() with {starts,ends}_with() 2013-12-05 14:13:21 -08:00
tag.c parse-options: multi-word argh should use dash to separate words 2014-03-24 10:43:34 -07:00
unpack-file.c
unpack-objects.c Merge branch 'mh/replace-refs-variable-rename' 2014-03-14 14:27:06 -07:00
update-index.c update-index: fix segfault with missing --cacheinfo argument 2014-06-04 11:02:55 -07:00
update-ref.c update-ref: fail create operation over stdin if ref already exists 2014-04-02 10:40:43 -07:00
update-server-info.c i18n: update-server-info: mark parseopt strings for translation 2012-08-22 10:58:29 -07:00
upload-archive.c replace {pre,suf}fixcmp() with {starts,ends}_with() 2013-12-05 14:13:21 -08:00
var.c
verify-pack.c i18n: verify-pack: mark parseopt strings for translation 2012-08-22 10:58:29 -07:00
verify-tag.c gpg_interface: allow to request status return 2013-02-14 09:30:04 -08:00
write-tree.c i18n: write-tree: mark parseopt strings for translation 2012-08-22 10:58:29 -07:00