Junio C Hamano [Fri, 12 Jan 2007 00:47:34 +0000 (16:47 -0800)]
Merge branch 'jc/detached-head'
* jc/detached-head:
git-checkout: handle local changes sanely when detaching HEAD
git-checkout: safety check for detached HEAD checks existing refs
git-checkout: fix branch name output from the command
git-checkout: safety when coming back from the detached HEAD state.
git-checkout: rewording comments regarding detached HEAD.
git-checkout: do not warn detaching HEAD when it is already detached.
Detached HEAD (experimental)
git-branch: show detached HEAD
git-status: show detached HEAD
Junio C Hamano [Thu, 11 Jan 2007 22:58:47 +0000 (14:58 -0800)]
git-rm: do not fail on already removed file.
Often the user would do "/bin/rm foo" before telling git, but
then want to tell git about it. "git rm foo" however would fail
because it cannot unlink(2) foo.
Treat ENOENT error return from unlink(2) as if a successful
removal happened.
Linus Torvalds [Thu, 11 Jan 2007 22:09:31 +0000 (14:09 -0800)]
Better error messages for corrupt databases
This fixes another problem that Andy's case showed: git-fsck-objects
reports nonsensical results for corrupt objects.
There were actually two independent and confusing problems:
- when we had a zero-sized file and used map_sha1_file, mmap() would
return EINVAL, and git-fsck-objects would report that as an insane and
confusing error. I don't know when this was introduced, it might have
been there forever.
- when "parse_object()" returned NULL, fsck would say "object not found",
which can be very confusing, since obviously the object might "exist",
it's just unparseable because it's totally corrupt.
So this just makes "xmmap()" return NULL for a zero-sized object (which is
a valid thing pointer, exactly the same way "malloc()" can return NULL for
a zero-sized allocation). That fixes the first problem (but we could have
fixed it in the caller too - I don't personally much care whichever way it
goes, but maybe somebody should check that the NO_MMAP case does
something sane in this case too?).
And the second problem is solved by just making the error message slightly
clearer - the failure to parse an object may be because it's missing or
corrupt, not necessarily because it's not "found".
Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Thu, 11 Jan 2007 20:58:10 +0000 (12:58 -0800)]
Document git-init
These days, the command does a lot more than just initialise the
object database (such as setting default config-variables,
installing template hooks...), and "git init" is actually a more
sensible name nowadays.
Since wt-status is already computing all the information needed go the whole
way and actually track the (non-)emptiness of all three sections separately,
unify the code, and provide useful messages for each individual case.
Thanks to Junio and Michael Loeffler for suggestions.
Junio C Hamano [Wed, 10 Jan 2007 20:24:54 +0000 (12:24 -0800)]
Makefile: remove $foo when $foo.exe is built/installed.
On Cygwin, newly builtins are not recognized, because there exist both
the executable binaries (with .exe extension) _and_ the now-obsolete
scripts (without extension), but the script is executed.
Jürgen Rühle [Wed, 10 Jan 2007 21:36:39 +0000 (13:36 -0800)]
send-email: work around double encoding of in-body From field.
git-send-email sends out the message taken from format-patch
output without quoting nor encoding. When copying the From:
line to form in-body From: field, it should not copy it
verbatim, because the From: for the header is quoted according
to RFC 2047 when not ASCII.
The original came from Jürgen Rühle, but I moved the
string munging into a separate function so that later other
people can tweak it more easily. Bugs introduced during the
translation are mine.
Since c869753e, core.filemode is hardwired to false on Cygwin.
So this test had no chance to succeed, since an early commit
(changing just the filemode) failed, and therefore all subsequent
tests.
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Wed, 10 Jan 2007 04:39:09 +0000 (20:39 -0800)]
git-checkout: handle local changes sanely when detaching HEAD
When switching branches, we usually first try read-tree to make
sure that we do not lose the local changes and then updated the
HEAD using update-ref. However, we detached and updated HEAD
before these checks, which was quite bad in a repository with
local changes.
Shawn O. Pearce [Wed, 10 Jan 2007 01:04:52 +0000 (20:04 -0500)]
Don't die in git-http-fetch when fetching packs.
My sp/mmap changes to pack-check.c modified the function such that
it expects packed_git.pack_size to be populated with the total
bytecount of the packfile by the caller.
But that isn't the case for packs obtained by git-http-fetch as
pack_size was not initialized before being accessed. This caused
verify_pack to think it had 2^32-21 bytes available when the
downloaded pack perhaps was only 305 bytes in length. The use_pack
function then later dies with "offset beyond end of packfile"
when computing the overall file checksum.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
Stefan-W. Hahn [Tue, 9 Jan 2007 21:04:12 +0000 (22:04 +0100)]
Replacing the system call pread() with lseek()/xread()/lseek() sequence.
Using cygwin with cygwin.dll before 1.5.22 the system call pread() is buggy.
This patch introduces NO_PREAD. If NO_PREAD is set git uses a sequence of
lseek()/xread()/lseek() to emulate pread.
Signed-off-by: Stefan-W. Hahn <stefan.hahn@s-hahn.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
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>
Junio C Hamano [Tue, 9 Jan 2007 10:52:31 +0000 (02:52 -0800)]
Do not ignore a detected patchfile brokenness.
find_header() function is used to read and parse the patchfile
and it detects errors in the patch, but one place ignored the
error and went ahead, which was quite bad.
Brian Gernhardt [Tue, 9 Jan 2007 05:27:41 +0000 (00:27 -0500)]
Auto-quote config values in config.c:store_write_pair()
Suggested by Jakub Narebski <jnareb@gmail.com> on the list.
When we send a value to store_write_pair(), make sure that the value
that gets read out matches the one passed in. This means that for any
value that contains leading or trailing whitespace or any comment
character (# and ;), we need to surround it in quotes.
Signed-off-by: Brian Gernhardt <benji@silverinsanity.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
Martin Langhoff [Tue, 9 Jan 2007 02:10:41 +0000 (15:10 +1300)]
cvsserver: fix revision number during file adds
With this patch, cvs add / cvs commit echoes back to the client
the correct file version (1.1) so that the file in the checkout
is recognised as up-to-date.
Signed-off-by: Martin Langhoff <martin@catalyst.net.nz> Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Mon, 8 Jan 2007 23:56:51 +0000 (15:56 -0800)]
Merge branch 'jc/reflog'
* jc/reflog:
reflog --fix-stale: do not check the same trees and commits repeatedly.
reflog expire --fix-stale
Move traversal of reachable objects into a separate library.
builtin-prune: separate ref walking from reflog walking.
builtin-prune: make file-scope static struct to an argument.
Andy Whitcroft [Mon, 8 Jan 2007 15:58:23 +0000 (15:58 +0000)]
short i/o: fix calls to write to use xwrite or write_in_full
We have a number of badly checked write() calls. Often we are
expecting write() to write exactly the size we requested or fail,
this fails to handle interrupts or short writes. Switch to using
the new write_in_full(). Otherwise we at a minimum need to check
for EINTR and EAGAIN, where this is appropriate use xwrite().
Note, the changes to config handling are much larger and handled
in the next patch in the sequence.
Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
Andy Whitcroft [Mon, 8 Jan 2007 15:58:08 +0000 (15:58 +0000)]
short i/o: fix calls to read to use xread or read_in_full
We have a number of badly checked read() calls. Often we are
expecting read() to read exactly the size we requested or fail, this
fails to handle interrupts or short reads. Add a read_in_full()
providing those semantics. Otherwise we at a minimum need to check
for EINTR and EAGAIN, where this is appropriate use xread().
Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
Andy Whitcroft [Mon, 8 Jan 2007 15:57:52 +0000 (15:57 +0000)]
short i/o: clean up the naming for the write_{in,or}_xxx family
We recently introduced a write_in_full() which would either write
the specified object or emit an error message and fail. In order
to fix the read side we now want to introduce a read_in_full()
but without an error emit. This patch cleans up the naming
of this family of calls:
1) convert the existing write_or_whine() to write_or_whine_pipe()
to better indicate its pipe specific nature,
2) convert the existing write_in_full() calls to write_or_whine()
to better indicate its nature,
3) introduce a write_in_full() providing a write or fail semantic,
and
4) convert write_or_whine() and write_or_whine_pipe() to use
write_in_full().
Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Mon, 8 Jan 2007 10:42:30 +0000 (02:42 -0800)]
git-checkout: safety when coming back from the detached HEAD state.
After making commits in the detached HEAD state, if you run "git
checkout" to switch to an existing branch, you will lose your
work. Make sure the switched-to branch is a fast-forward of the
current HEAD, or require -f when switching.
We used to say "you are not on a branch" before the initial
commit. This is incorrect -- the user is on a branch yet to be
born, but its name has been already determined.
Junio C Hamano [Tue, 2 Jan 2007 07:31:08 +0000 (23:31 -0800)]
Detached HEAD (experimental)
This allows "git checkout v1.4.3" to dissociate the HEAD of
repository from any branch. After this point, "git branch"
starts reporting that you are not on any branch. You can go
back to an existing branch by saying "git checkout master", for
example.
This is still experimental. While I think it makes sense to
allow commits on top of detached HEAD, it is rather dangerous
unless you are careful in the current form. Next "git checkout
master" will obviously lose what you have done, so we might want
to require "git checkout -f" out of a detached HEAD if we find
that the HEAD commit is not an ancestor of any other branches.
There is no such safety valve implemented right now.
On the other hand, the reason the user did not start the ad-hoc
work on a new branch with "git checkout -b" was probably because
the work was of a throw-away nature, so the convenience of not
having that safety valve might be even better. The user, after
accumulating some commits on top of a detached HEAD, can always
create a new branch with "git checkout -b" not to lose useful
work done while the HEAD was detached.
Martin Langhoff [Mon, 8 Jan 2007 01:11:23 +0000 (14:11 +1300)]
cvsimport: skip commits that are too recent
With this patch, cvsimport will skip commits made
in the last 10 minutes. The recent-ness test is of
5 minutes + cvsps fuzz window (5 minutes default).
When working with a CVS repository that is in use,
importing commits that are too recent can lead to
partially incorrect trees. This is mainly due to
- Commits that are within the cvsps fuzz window may later
be found to have affected more files.
- When performing incremental imports, clock drift between
the systems may lead to skipped commits.
This commit helps keep incremental imports of in-use
CVS repositories sane.
Signed-off-by: Martin Langhoff <martin@catalyst.net.nz> Signed-off-by: Junio C Hamano <junkio@cox.net>
Jürgen Rühle [Sun, 7 Jan 2007 19:18:26 +0000 (20:18 +0100)]
Remove unnecessary git-rm --cached reference from status output
Since git-reset has learned restoring the absence of paths git-rm --cached is
no longer necessary. Therefore remove it from the cached content header hint.
Also remove the unfortunate wording 'Cached' from the header itself.
Signed-off-by: Jürgen Rühle <j-r@online.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Sun, 7 Jan 2007 08:12:47 +0000 (00:12 -0800)]
Merge branch 'sp/mmap'
* sp/mmap: (27 commits)
Spell default packedgitlimit slightly differently
Increase packedGit{Limit,WindowSize} on 64 bit systems.
Update packedGit config option documentation.
mmap: set FD_CLOEXEC for file descriptors we keep open for mmap()
pack-objects: fix use of use_pack().
Fix random segfaults in pack-objects.
Cleanup read_cache_from error handling.
Replace mmap with xmmap, better handling MAP_FAILED.
Release pack windows before reporting out of memory.
Default core.packdGitWindowSize to 1 MiB if NO_MMAP.
Test suite for sliding window mmap implementation.
Create pack_report() as a debugging aid.
Support unmapping windows on 'temporary' packfiles.
Improve error message when packfile mmap fails.
Ensure core.packedGitWindowSize cannot be less than 2 pages.
Load core configuration in git-verify-pack.
Fully activate the sliding window pack access.
Unmap individual windows rather than entire files.
Document why header parsing won't exceed a window.
Loop over pack_windows when inflating/accessing data.
...
Junio C Hamano [Sun, 7 Jan 2007 07:49:24 +0000 (23:49 -0800)]
Merge branch 'jr/status'
* jr/status:
Improve cached content header of status output
Support --amend on initial commit in status output
Improve "nothing to commit" part of status output
Clarify syntax and role of git-add in status output
Junio C Hamano [Fri, 5 Jan 2007 09:38:56 +0000 (01:38 -0800)]
git-reset <tree> -- <path> restores absense of <path> in <tree>
When <path> exists in the index (either merged or unmerged), and
<tree> does not have it, git-reset should be usable to restore
the absense of it from the tree. This implements it.
Junio C Hamano [Fri, 5 Jan 2007 09:25:18 +0000 (01:25 -0800)]
diff-index --cached --raw: show tree entry on the LHS for unmerged entries.
This updates the way diffcore represents an unmerged pair
somewhat. It used to be that entries with mode=0 on both sides
were used to represent an unmerged pair, but now it has an
explicit flag. This is to allow diff-index --cached to report
the entry from the tree when the path is unmerged in the index.
This is used in updating "git reset <tree> -- <path>" to restore
absense of the path in the index from the tree.
Junio C Hamano [Sun, 7 Jan 2007 06:32:41 +0000 (22:32 -0800)]
reflog --fix-stale: do not check the same trees and commits repeatedly.
Since we use the reachability tracking machinery now, we should
keep the already checked trees and commits whose completeness is
known, to avoid checking the same thing over and over again.
Junio C Hamano [Sat, 6 Jan 2007 10:16:19 +0000 (02:16 -0800)]
reflog expire --fix-stale
The logic in an earlier round to detect reflog entries that
point at a broken commit was not sufficient. Just like we do
not trust presense of a commit during pack transfer (we trust
only our refs), we should not trust a commit's presense, even if
the tree of that commit is complete.
A repository that had reflog enabled on some of the refs that
was rewound and then run git-repack or git-prune from older
versions of git can have reflog entries that point at a commit
that still exist but lack commits (or trees and blobs needed for
that commit) between it and some commit that is reachable from
one of the refs.
This revamps the logic -- the definition of "broken commit"
becomes: a commit that is not reachable from any of the refs and
there is a missing object among the commit, tree, or blob
objects reachable from it that is not reachable from any of the
refs. Entries in the reflog that refer to such a commit are
expired.
Since this computation involves traversing all the reachable
objects, i.e. it has the same cost as 'git prune', it is enabled
only when a new option --fix-stale. Fortunately, once this is
run, we should not have to ever worry about missing objects,
because the current prune and pack-objects know about reflogs
and protect objects referred by them.
Unfortunately, this will be absolutely necessary to help people
migrate to the newer prune and repack.
Junio C Hamano [Sat, 6 Jan 2007 10:16:17 +0000 (02:16 -0800)]
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.
Junio C Hamano [Sat, 6 Jan 2007 10:16:14 +0000 (02:16 -0800)]
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.
Junio C Hamano [Sat, 6 Jan 2007 10:16:10 +0000 (02:16 -0800)]
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.
Jakub Narebski [Sun, 7 Jan 2007 01:52:27 +0000 (02:52 +0100)]
gitweb: Fix split patches output (e.g. file to symlink)
Do not replace /dev/null in two-line from-file/to-file diff header for
split patches ("split" patch mean more than one patch per one
diff-tree raw line) by a/file or b/file link.
Split patches differ from pair of deletion/creation patch in git diff
header: both a/file and b/file are hyperlinks, in all patches in a
split.
Signed-off-by: Jakub Narebski <jnareb@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
Jakub Narebski [Sun, 7 Jan 2007 01:52:25 +0000 (02:52 +0100)]
gitweb: Fix errors in git_patchset_body for empty patches
We now do not skip over empty patches in git_patchset_body (where
empty means that they consist only of git diff header, and of extended
diff header, for example "pure rename" patch). This means that after
extended diff header there can be next patch (i.e. /^diff /) or end of
patchset, and not necessary patch body (i.e. /^--- /).
Signed-off-by: Jakub Narebski <jnareb@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
Jakub Narebski [Sun, 7 Jan 2007 01:52:23 +0000 (02:52 +0100)]
gitweb: Fix error in git_patchest_body for file creation/deletion patch
$from_id, $to_id variables should be local per PATCH.
Fix error in git_patchset_body for file creation (deletion) patches,
where instead of /dev/null as from-file (to-file) diff header line, it
had link to previous file with current file name. This error occured
only if there was another patch before file creation (deletion) patch.
Signed-off-by: Jakub Narebski <jnareb@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
Eric Wong [Sun, 7 Jan 2007 01:53:40 +0000 (17:53 -0800)]
Documentation/git-svn: clarify dcommit, rebase vs pull/merge
Clarify that dcommit creates a revision in SVN for every commit
in git. Also, add 'merge' to the rebase vs pull section because
git-merge is now a first-class UI.
Signed-off-by: Eric Wong <normalperson@yhbt.net> Signed-off-by: Junio C Hamano <junkio@cox.net>
This adds ability to do import "in chunks" (default 1000 revisions),
after each chunk git repo will be repacked. The option -R is used to
change default value of chunk size (or how often repository will
repacked).
Signed-off-by: Sasha Khapyorsky <sashak@voltaire.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
Steven Grimm [Sat, 6 Jan 2007 01:52:20 +0000 (17:52 -0800)]
Describe git-clone's actual behavior in the summary
If a branch other than "master" is checked out in the origin repository,
git-clone makes a local copy of that branch rather than the origin's
"master"
branch. This patch describes the actual behavior.
Signed-off-by: Steven Grimm <koreth@midwinter.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
René Scharfe [Fri, 5 Jan 2007 22:30:22 +0000 (23:30 +0100)]
Set default "tar" umask to 002 and owner.group to root.root
In order to make the generated tar files more friendly to users who
extract them as root using GNU tar and its implied -p option, change
the default umask to 002 and change the owner name and group name to
root. This ensures that a) the extracted files and directories are
not world-writable and b) that they belong to user and group root.
Before they would have been assigned to a user and/or group named
git if it existed. This also answers the question in the removed
comment: uid=0, gid=0, uname=root, gname=root is exactly what we
want.
Normal users who let tar apply their umask while extracting are
only affected if their umask allowed the world to change their
files (e.g. a umask of zero). This case is so unlikely and strange
that we don't need to support it.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Fri, 5 Jan 2007 03:28:08 +0000 (22:28 -0500)]
Increase packedGit{Limit,WindowSize} on 64 bit systems.
If we have a 64 bit address space we can easily afford to commit
a larger amount of virtual address space to pack file access.
So on these platforms we should increase the default settings of
core.packedGit{Limit,WindowSize} to something that will better
handle very large projects.
Thanks to Andy Whitcroft for pointing out that we can safely
increase these defaults on such systems.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>