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Junio C Hamano f859c846e9 Add has_symlink_leading_path() function. 
When we are applying a patch that creates a blob at a path, or
when we are switching from a branch that does not have a blob at
the path to another branch that has one, we need to make sure
that there is nothing at the path in the working tree, as such a
file is a local modification made by the user that would be lost
by the operation.

Normally, lstat() on the path and making sure ENOENT is returned
is good enough for that purpose.  However there is a twist.  We
may be creating a regular file arch/x86_64/boot/Makefile, while
removing an existing symbolic link at arch/x86_64/boot that
points at existing ../i386/boot directory that has Makefile in
it.  We always first check without touching filesystem and then
perform the actual operation, so when we verify the new file,
arch/x86_64/boot/Makefile, does not exist, we haven't removed
the symbolic link arc/x86_64/boot symbolic link yet.  lstat() on
the file sees through the symbolic link and reports the file is
there, which is not what we want.

The function has_symlink_leading_path() function takes a path,
and sees if any of the leading directory component is a symbolic
link.

When files in a new directory are created, we tend to process
them together because both index and tree are sorted.  The
function takes advantage of this and allows the caller to cache
and reuse which symbolic link on the filesystem caused the
function to return true.

The calling sequence would be:

	char last_symlink[PATH_MAX];

        *last_symlink = '\0';
        for each index entry {
		if (!lose)
			continue;
		if (lstat(it))
			if (errno == ENOENT)
				; /* happy */
			else
				error;
		else if (has_symlink_leading_path(it, last_symlink))
			; /* happy */
		else
			error; /* would lose local changes */
		unlink_entry(it, last_symlink);
	}

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-05-11 22:11:07 -07:00
arm
compat
contrib Merge branch 'maint' 2007-05-10 14:48:04 -07:00
Documentation Minor copyediting on Release Notes for 1.5.2 2007-05-10 21:59:13 -07:00
git-gui Merge branch 'master' of git://repo.or.cz/git-gui 2007-05-10 15:08:18 -07:00
gitweb gitweb: Do not use absolute font sizes 2007-05-10 14:13:29 -07:00
mozilla-sha1
perl Git.pm: config_boolean() -> config_bool() 2007-05-10 14:13:29 -07:00
ppc
t t9400: skip cvsserver test if Perl SQLite interface is unavailable 2007-05-09 12:34:00 -07:00
templates Have sample update hook not refuse deleting a branch through push. 2007-04-16 01:35:39 -07:00
xdiff xdiff/xutils.c(xdl_hash_record): factor out whitespace handling 2007-03-19 22:17:25 -07:00
.gitignore git-gui: Refactor into multiple files to save my sanity 2007-05-07 23:35:48 -04:00
.mailmap .mailmap: add some aliases 2007-05-10 13:26:26 -07:00
alloc.c Clean up object creation to use more common code 2007-04-16 23:36:16 -07:00
archive-tar.c
archive-zip.c
archive.h
attr.c Fix crash in t0020 (crlf conversion) 2007-04-22 10:44:56 -07:00
attr.h Fix funny types used in attribute value representation 2007-04-18 16:17:13 -07:00
base85.c (encode_85, decode_85): Mark source buffer pointer as "const". 2007-04-11 00:51:20 -07:00
blob.c Clean up object creation to use more common code 2007-04-16 23:36:16 -07:00
blob.h
builtin-add.c git-add -u: match the index with working tree. 2007-04-20 01:47:47 -07:00
builtin-annotate.c
builtin-apply.c Merge branch 'jc/attr' 2007-04-21 17:38:00 -07:00
builtin-archive.c git-archive: make tar the default format 2007-04-09 18:51:40 -07:00
builtin-blame.c Merge branch 'maint' 2007-05-06 00:21:03 -07:00
builtin-branch.c Make builtin-branch.c handle the git config file 2007-04-06 16:54:39 -07:00
builtin-bundle.c Rename warn() to warning() to fix symbol conflicts on BSD and Mac OS 2007-03-31 01:11:11 -07:00
builtin-cat-file.c Cleanup variables in cat-file 2007-04-22 00:43:24 -07:00
builtin-check-attr.c Fix funny types used in attribute value representation 2007-04-18 16:17:13 -07:00
builtin-check-ref-format.c
builtin-checkout-index.c _GIT_INDEX_OUTPUT: allow plumbing to output to an alternative index file. 2007-04-03 23:44:32 -07:00
builtin-commit-tree.c init_buffer(): Kill buf pointer 2007-04-25 13:45:12 -07:00
builtin-config.c Update git-config documentation 2007-04-18 22:08:16 -07:00
builtin-count-objects.c get rid of num_packed_objects() 2007-04-10 12:48:14 -07:00
builtin-describe.c
builtin-diff-files.c Removing -n option from git-diff-files documentation 2007-04-26 22:43:10 -07:00
builtin-diff-index.c Allow git-diff exit with codes similar to diff(1) 2007-03-14 16:21:19 -07:00
builtin-diff-tree.c Allow git-diff exit with codes similar to diff(1) 2007-03-14 16:21:19 -07:00
builtin-diff.c Diff between two blobs should take mode changes into account now. 2007-04-24 00:08:49 -07:00
builtin-fetch--tool.c Merge branch 'maint' 2007-04-29 01:52:43 -07:00
builtin-fmt-merge-msg.c Merge branch 'maint' 2007-02-27 22:15:42 -08:00
builtin-for-each-ref.c General const correctness fixes 2007-03-07 10:47:10 -08:00
builtin-fsck.c Merge branch 'maint' 2007-04-29 01:52:43 -07:00
builtin-gc.c Make gc a builtin. 2007-03-17 00:34:19 -07:00
builtin-grep.c sscanf/strtoul: parse integers robustly 2007-04-14 19:47:20 -07:00
builtin-init-db.c
builtin-log.c Add support for "commit name decorations" to log family of commands 2007-04-16 16:51:11 -07:00
builtin-ls-files.c Fix some "git ls-files -o" fallout from gitlinks 2007-04-14 17:42:58 -07:00
builtin-ls-tree.c Teach core object handling functions about gitlinks 2007-04-10 13:50:43 -07:00
builtin-mailinfo.c git-mailinfo fixes for patch munging 2007-03-31 00:59:19 -07:00
builtin-mailsplit.c
builtin-merge-base.c
builtin-merge-file.c
builtin-mv.c Merge branch 'jc/index-output' 2007-04-07 02:26:24 -07:00
builtin-name-rev.c
builtin-pack-objects.c Increase pack.depth default to 50 2007-05-08 22:47:17 -07:00
builtin-pack-refs.c
builtin-prune-packed.c
builtin-prune.c minor git-prune optimization 2007-03-20 22:17:47 -07:00
builtin-push.c git-push to multiple locations does not stop at the first failure 2007-04-07 02:27:31 -07:00
builtin-read-tree.c Merge branch 'jc/read-tree-df' (early part) 2007-04-07 23:52:40 -07:00
builtin-reflog.c Initialize tree descriptors with a helper function rather than by hand. 2007-03-21 10:21:57 -07:00
builtin-rerere.c rerere: make sorting really stable. 2007-04-04 14:12:03 -07:00
builtin-rev-list.c Add --date={local,relative,default} 2007-04-25 21:39:43 -07:00
builtin-rev-parse.c
builtin-revert.c Correct error message in revert/cherry-pick 2007-05-10 15:21:50 -07:00
builtin-rm.c Add --ignore-unmatch option to exit with zero status when no files are removed. 2007-04-17 00:19:11 -07:00
builtin-runstatus.c
builtin-shortlog.c Remove pointless calls to access(2) when checking for .mailmap 2007-04-30 16:57:52 -07:00
builtin-show-branch.c General const correctness fixes 2007-03-07 10:47:10 -08:00
builtin-show-ref.c
builtin-stripspace.c
builtin-symbolic-ref.c
builtin-tar-tree.c
builtin-unpack-objects.c make progress "title" part of the common progress interface 2007-04-22 22:18:05 -07:00
builtin-update-index.c Merge branch 'lt/gitlink' 2007-04-21 17:21:10 -07:00
builtin-update-ref.c
builtin-upload-archive.c
builtin-verify-pack.c
builtin-write-tree.c Merge branch 'maint' 2007-04-25 23:31:45 -07:00
builtin.h Add basic infrastructure to assign attributes to paths 2007-04-14 08:57:06 -07:00
cache-tree.c Teach core object handling functions about gitlinks 2007-04-10 13:50:43 -07:00
cache-tree.h
cache.h Add has_symlink_leading_path() function. 2007-05-11 22:11:07 -07:00
check-builtins.sh
check-racy.c
color.c
color.h
combine-diff.c Support 'diff=pgm' attribute 2007-04-22 22:16:14 -07:00
commit.c Merge branch 'maint' 2007-05-06 00:21:03 -07:00
commit.h Add --date={local,relative,default} 2007-04-25 21:39:43 -07:00
config.c Fix renaming branch without config file 2007-04-05 14:53:22 -07:00
config.mak.in Add --with-tcltk and --without-tcltk to configure. 2007-03-31 23:59:47 -07:00
configure.ac Eliminate checks of user-specified Tcl/Tk interpreter. 2007-03-31 23:59:47 -07:00
connect.c Fix "getaddrinfo()" buglet 2007-03-27 13:00:13 -07:00
convert-objects.c fix up strtoul_ui error handling 2007-04-18 19:26:33 -07:00
convert.c Add 'filter' attribute and external filter driver definition. 2007-04-24 22:38:51 -07:00
copy.c
COPYING
csum-file.c compute a CRC32 for each object as stored in a pack 2007-04-10 12:48:14 -07:00
csum-file.h compute a CRC32 for each object as stored in a pack 2007-04-10 12:48:14 -07:00
ctype.c
daemon.c
date.c Add --date={local,relative,default} 2007-04-25 21:39:43 -07:00
decorate.c Fix a copy-n-paste bug in the object decorator code. 2007-04-20 19:16:12 -07:00
decorate.h Add a generic "object decorator" interface, and make object refs use it 2007-04-16 16:51:09 -07:00
delta.h
diff-delta.c
diff-lib.c Merge branch 'lt/gitlink' 2007-04-21 17:21:10 -07:00
diff.c diff.c: do not use a separate "size cache". 2007-05-07 15:54:32 -07:00
diff.h Support 'diff=pgm' attribute 2007-04-22 22:16:14 -07:00
diffcore-break.c Cast 64 bit off_t to 32 bit size_t 2007-03-07 11:15:26 -08:00
diffcore-delta.c
diffcore-order.c Cast 64 bit off_t to 32 bit size_t 2007-03-07 11:15:26 -08:00
diffcore-pickaxe.c diff -S: release the image after looking for needle in it 2007-05-07 15:54:32 -07:00
diffcore-rename.c diff -M: release the preimage candidate blobs after rename detection. 2007-05-07 15:54:32 -07:00
diffcore.h Make macros to prevent double-inclusion in headers consistent. 2007-04-29 02:05:11 -07:00
dir.c dir.c: Omit non-excluded directories with dir->show_ignored 2007-05-07 15:29:29 -07:00
dir.h Teach directory traversal about subprojects 2007-04-11 19:09:55 -07:00
dump-cache-tree.c
entry.c entry.c: Use const qualifier for 'struct checkout' parameters 2007-04-25 13:15:59 -07:00
environment.c Limit the size of the new delta_base_cache 2007-03-18 22:43:37 -07:00
exec_cmd.c
exec_cmd.h Make macros to prevent double-inclusion in headers consistent. 2007-04-29 02:05:11 -07:00
fast-import.c Create pack-write.c for common pack writing code 2007-05-02 13:24:18 -04:00
fetch-pack.c Merge branch 'js/fetch-progress' (early part) 2007-03-04 17:31:21 -08:00
fetch.c Initialize tree descriptors with a helper function rather than by hand. 2007-03-21 10:21:57 -07:00
fetch.h
generate-cmdlist.sh
git-add--interactive.perl
git-am.sh Fix typo in git-am: s/Was is/Was it/ 2007-04-23 22:14:24 -07:00
git-applymbox.sh applymbox & quiltimport: typofix. 2007-04-24 14:27:41 -07:00
git-applypatch.sh
git-archimport.perl git-archimport: allow remapping branch names 2007-03-07 10:30:22 -08:00
git-bisect.sh Bisect: simplify "bisect start" logging. 2007-04-16 21:44:40 -07:00
git-checkout.sh add file checkout progress 2007-04-23 21:39:28 -07:00
git-clean.sh Add clean.requireForce option, and add -f option to git-clean to override it 2007-04-23 22:13:50 -07:00
git-clone.sh git-clone: don't get fooled by $PWD 2007-05-10 13:26:14 -07:00
git-commit.sh Display the subject of the commit just made. 2007-04-16 01:06:00 -07:00
git-compat-util.h Merge branch 'maint' 2007-05-03 23:26:54 -07:00
git-cvsexportcommit.perl cvsexportcommit -p : fix the usage of git-apply -C. 2007-04-09 18:52:41 -07:00
git-cvsimport.perl cvsimport: Improve usage error reporting 2007-04-06 16:46:11 -07:00
git-cvsserver.perl Merge branch 'maint' 2007-05-02 11:27:31 -07:00
git-fetch.sh git-fetch: Fix "argument list too long" 2007-04-24 00:08:01 -07:00
git-instaweb.sh
git-lost-found.sh Fix lost-found to show commits only referenced by reflogs 2007-04-05 15:00:03 -07:00
git-ls-remote.sh
git-merge-octopus.sh
git-merge-one-file.sh
git-merge-ours.sh Use diff* with --exit-code in git-am, git-rebase and git-merge-ours 2007-03-24 23:01:36 -07:00
git-merge-resolve.sh
git-merge-stupid.sh
git-merge.sh A new merge stragety 'subtree'. 2007-04-07 02:29:40 -07:00
git-mergetool.sh mergetool: Clean up description of files and prompts for merge resolutions 2007-03-29 22:46:16 -04:00
git-p4import.py
git-parse-remote.sh git-fetch, git-branch: Support local --track via a special remote '.' 2007-03-16 02:10:12 -07:00
git-pull.sh
git-quiltimport.sh applymbox & quiltimport: typofix. 2007-04-24 14:27:41 -07:00
git-rebase.sh Use rev-list --reverse in git-rebase.sh 2007-04-13 19:06:40 -07:00
git-relink.perl
git-remote.perl Git.pm: config_boolean() -> config_bool() 2007-05-10 14:13:29 -07:00
git-repack.sh
git-request-pull.sh Improve request-pull to handle non-rebased branches 2007-05-03 23:27:03 -07:00
git-reset.sh add file checkout progress 2007-04-23 21:39:28 -07:00
git-send-email.perl Git.pm: config_boolean() -> config_bool() 2007-05-10 14:13:29 -07:00
git-sh-setup.sh
git-svn.perl Add --no-rebase option to git-svn dcommit 2007-05-04 15:08:31 -07:00
git-svnimport.perl
git-tag.sh
git-verify-tag.sh
GIT-VERSION-GEN GIT v1.5.2-rc3 2007-05-10 15:22:02 -07:00
git.c Add basic infrastructure to assign attributes to paths 2007-04-14 08:57:06 -07:00
git.spec.in Added new git-gui library files to rpm spec 2007-05-10 00:09:28 -07:00
gitk gitk: Allow user to choose whether to see the diff, old file, or new file 2007-04-19 11:39:12 +10:00
grep.c
grep.h
hash-object.c index_fd(): pass optional path parameter as hint for blob conversion 2007-02-28 12:00:00 -08:00
help.c use xrealloc in help.c 2007-03-27 16:57:57 -07:00
http-fetch.c Fix lseek(2) calls with args 2 and 3 swapped 2007-04-05 15:39:12 -07:00
http-push.c Fix lseek(2) calls with args 2 and 3 swapped 2007-04-05 15:39:12 -07:00
http.c http.c: Fix problem with repeated calls of http_init 2007-04-29 01:34:59 -07:00
http.h http-fetch: Disable use of curl multi support for libcurl < 7.16. 2007-05-03 22:12:40 -07:00
ident.c Fall back to $EMAIL for missing GIT_AUTHOR_EMAIL and GIT_COMMITTER_EMAIL 2007-04-29 02:05:06 -07:00
imap-send.c
index-pack.c Reuse fixup_pack_header_footer in index-pack 2007-05-02 13:24:21 -04:00
INSTALL
interpolate.c General const correctness fixes 2007-03-07 10:47:10 -08:00
interpolate.h General const correctness fixes 2007-03-07 10:47:10 -08:00
list-objects.c Teach git list-objects logic to not follow gitlinks 2007-04-14 03:14:14 -07:00
list-objects.h
local-fetch.c [PATCH] local-fetch.c: some error printing cleanup 2007-03-16 21:27:35 -07:00
lockfile.c lockfile: record the primary process. 2007-04-21 11:55:23 -07:00
log-tree.c Merge branch 'maint' 2007-05-06 00:21:03 -07:00
log-tree.h
mailmap.c Include mailmap.h in mailmap.c to catch mailmap interface changes 2007-04-30 16:57:59 -07:00
mailmap.h Split out mailmap handling out of shortlog 2007-04-29 02:05:06 -07:00
Makefile git-gui: Define a simple class/method system 2007-05-08 21:38:54 -04:00
match-trees.c A new merge stragety 'subtree'. 2007-04-07 02:29:40 -07:00
merge-file.c
merge-index.c Fix merge-index 2007-03-19 02:48:37 -07:00
merge-recursive.c Ignore merged status of the file-level merge 2007-04-26 16:11:39 -07:00
merge-tree.c Remove "pathlen" from "struct name_entry" 2007-03-21 10:21:56 -07:00
mktag.c
mktree.c
object-refs.c Add a generic "object decorator" interface, and make object refs use it 2007-04-16 16:51:09 -07:00
object.c add add_object_array_with_mode 2007-04-24 00:08:49 -07:00
object.h add add_object_array_with_mode 2007-04-24 00:08:49 -07:00
pack-check.c get rid of num_packed_objects() 2007-04-10 12:48:14 -07:00
pack-redundant.c pack-redundant.c: learn about index v2 2007-04-10 12:48:14 -07:00
pack-write.c Create pack-write.c for common pack writing code 2007-05-02 13:24:18 -04:00
pack.h Create pack-write.c for common pack writing code 2007-05-02 13:24:18 -04:00
pager.c
patch-delta.c
patch-id.c
patch-ids.c Refactor patch-id filtering out of git-cherry and git-format-patch. 2007-04-11 20:02:03 -07:00
patch-ids.h Refactor patch-id filtering out of git-cherry and git-format-patch. 2007-04-11 20:02:03 -07:00
path-list.c
path-list.h Make macros to prevent double-inclusion in headers consistent. 2007-04-29 02:05:11 -07:00
path.c General const correctness fixes 2007-03-07 10:47:10 -08:00
peek-remote.c
pkt-line.c
pkt-line.h
progress.c provide a facility for "delayed" progress reporting 2007-04-22 22:18:05 -07:00
progress.h Make macros to prevent double-inclusion in headers consistent. 2007-04-29 02:05:11 -07:00
quote.c
quote.h
reachable.c Initialize tree descriptors with a helper function rather than by hand. 2007-03-21 10:21:57 -07:00
reachable.h
read-cache.c read_cache_from(): small simplification 2007-04-25 13:44:27 -07:00
README Update README to point at a few key periodical messages to the list 2007-03-25 17:42:32 -07:00
receive-pack.c Use run_command within receive-pack to invoke index-pack 2007-03-12 23:40:18 -07:00
reflog-walk.c
reflog-walk.h
refs.c Merge branch 'lt/gitlink' 2007-04-21 17:21:10 -07:00
refs.h Add 'resolve_gitlink_ref()' helper function 2007-04-10 13:44:16 -07:00
RelNotes GIT v1.5.1.4 2007-05-08 22:11:17 -07:00
revision.c Handle return code of parse_commit in revision machinery 2007-05-06 00:07:07 -07:00
revision.h Handle return code of parse_commit in revision machinery 2007-05-06 00:07:07 -07:00
rsh.c
rsh.h
run-command.c Teach run-command to redirect stdout to /dev/null 2007-03-12 23:40:17 -07:00
run-command.h Teach run-command to redirect stdout to /dev/null 2007-03-12 23:40:17 -07:00
send-pack.c Use run_command within send-pack 2007-03-12 23:40:18 -07:00
server-info.c
setup.c Merge branch 'maint' 2007-03-10 22:07:26 -08:00
sha1_file.c Merge branch 'maint' 2007-04-25 23:31:45 -07:00
sha1_name.c add get_sha1_with_mode 2007-04-24 00:08:49 -07:00
shallow.c
shell.c
show-index.c show-index.c: learn about index v2 2007-04-10 12:48:14 -07:00
sideband.c
sideband.h
ssh-fetch.c
ssh-pull.c
ssh-push.c
ssh-upload.c
strbuf.c
strbuf.h
symlinks.c Add has_symlink_leading_path() function. 2007-05-11 22:11:07 -07:00
tag.c Clean up object creation to use more common code 2007-04-16 23:36:16 -07:00
tag.h
tar.h
test-chmtime.c
test-date.c
test-delta.c Fix compilation of test-delta 2007-05-01 02:59:08 -07:00
test-genrandom.c simple random data generator for tests 2007-04-11 19:23:32 -07:00
test-match-trees.c A new merge stragety 'subtree'. 2007-04-07 02:29:40 -07:00
test-sha1.c
test-sha1.sh
trace.c git-branch, git-checkout: autosetup for remote branch tracking 2007-03-10 23:41:58 -08:00
tree-diff.c tree_entry_interesting(): allow it to say "everything is interesting" 2007-03-22 00:36:00 -07:00
tree-walk.c Switch over tree descriptors to contain a pre-parsed entry 2007-03-21 11:15:26 -07:00
tree-walk.h Switch over tree descriptors to contain a pre-parsed entry 2007-03-21 11:15:26 -07:00
tree.c Merge branch 'lt/objalloc' 2007-04-21 17:42:02 -07:00
tree.h
unpack-file.c
unpack-trees.c delay progress display when checking out files 2007-04-22 22:18:05 -07:00
unpack-trees.h unpack-trees: get rid of *indpos parameter. 2007-04-04 00:19:28 -07:00
update-server-info.c
upload-pack.c git-upload-pack: make sure we close unused pipe ends 2007-03-29 01:41:23 -07:00
usage.c Rename warn() to warning() to fix symbol conflicts on BSD and Mac OS 2007-03-31 01:11:11 -07:00
utf8.c wcwidth redeclaration 2007-05-07 22:02:40 -07:00
utf8.h
var.c
write_or_die.c
wt-status.c Optimize directory listing with pathspec limiter. 2007-03-31 17:41:32 -07:00
wt-status.h
xdiff-interface.c Cast 64 bit off_t to 32 bit size_t 2007-03-07 11:15:26 -08:00
xdiff-interface.h

README 

////////////////////////////////////////////////////////////////

	GIT - the stupid content tracker

////////////////////////////////////////////////////////////////

"git" can mean anything, depending on your mood.

 - random three-letter combination that is pronounceable, and not
   actually used by any common UNIX command.  The fact that it is a
   mispronunciation of "get" may or may not be relevant.
 - stupid. contemptible and despicable. simple. Take your pick from the
   dictionary of slang.
 - "global information tracker": you're in a good mood, and it actually
   works for you. Angels sing, and a light suddenly fills the room.
 - "goddamn idiotic truckload of sh*t": when it breaks

Git is a fast, scalable, distributed revision control system with an
unusually rich command set that provides both high-level operations
and full access to internals.

Git is an Open Source project covered by the GNU General Public License.
It was originally written by Linus Torvalds with help of a group of
hackers around the net. It is currently maintained by Junio C Hamano.

Please read the file INSTALL for installation instructions.
See Documentation/tutorial.txt to get started, then see
Documentation/everyday.txt for a useful minimum set of commands,
and "man git-commandname" for documentation of each command.
CVS users may also want to read Documentation/cvs-migration.txt.

Many Git online resources are accessible from http://git.or.cz/
including full documentation and Git related tools.

The user discussion and development of Git take place on the Git
mailing list -- everyone is welcome to post bug reports, feature
requests, comments and patches to git@vger.kernel.org. To subscribe
to the list, send an email with just "subscribe git" in the body to
majordomo@vger.kernel.org. The mailing list archives are available at
http://marc.theaimsgroup.com/?l=git and other archival sites.

The messages titled "A note from the maintainer", "What's in
git.git (stable)" and "What's cooking in git.git (topics)" and
the discussion following them on the mailing list give a good
reference for project status, development direction and
remaining tasks.