The size of objects we read from the repository and data we try to put
into the repository are represented in "unsigned long", so that on larger
architectures we can handle objects that weigh more than 4GB.
But the interface defined in zlib.h to communicate with inflate/deflate
limits avail_in (how many bytes of input are we calling zlib with) and
avail_out (how many bytes of output from zlib are we ready to accept)
fields effectively to 4GB by defining their type to be uInt.
In many places in our code, we allocate a large buffer (e.g. mmap'ing a
large loose object file) and tell zlib its size by assigning the size to
avail_in field of the stream, but that will truncate the high octets of
the real size. The worst part of this story is that we often pass around
z_stream (the state object used by zlib) to keep track of the number of
used bytes in input/output buffer by inspecting these two fields, which
practically limits our callchain to the same 4GB limit.
Wrap z_stream in another structure git_zstream that can express avail_in
and avail_out in unsigned long. For now, just die() when the caller gives
a size that cannot be given to a single zlib call. In later patches in the
series, we would make git_inflate() and git_deflate() internally loop to
give callers an illusion that our "improved" version of zlib interface can
operate on a buffer larger than 4GB in one go.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Wrap deflateInit, deflate, and deflateEnd for everybody, and the sole use
of deflateInit2 in remote-curl.c to tell the library to use gzip header
and trailer in git_deflate_init_gzip().
There is only one caller that cares about the status from deflateEnd().
Introduce git_deflate_end_gently() to let that sole caller retrieve the
status and act on it (i.e. die) for now, but we would probably want to
make inflate_end/deflate_end die when they ran out of memory and get
rid of the _gently() kind.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
While refactoring the options parser in bc3c79a (fast-import: add
(non-)relative-marks feature, 2009-12-04), it was made too lenient
for options that take no argument, fix that.
Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The pack-objects command should take notice of the object file and
refrain from attempting to delta large ones, to be consistent with
the fast-import command.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Fix warnings from 'make check'.
- These files don't include 'builtin.h' causing sparse to complain that
cmd_* isn't declared:
builtin/clone.c:364, builtin/fetch-pack.c:797,
builtin/fmt-merge-msg.c:34, builtin/hash-object.c:78,
builtin/merge-index.c:69, builtin/merge-recursive.c:22
builtin/merge-tree.c:341, builtin/mktag.c:156, builtin/notes.c:426
builtin/notes.c:822, builtin/pack-redundant.c:596,
builtin/pack-refs.c:10, builtin/patch-id.c:60, builtin/patch-id.c:149,
builtin/remote.c:1512, builtin/remote-ext.c:240,
builtin/remote-fd.c:53, builtin/reset.c:236, builtin/send-pack.c:384,
builtin/unpack-file.c:25, builtin/var.c:75
- These files have symbols which should be marked static since they're
only file scope:
submodule.c:12, diff.c:631, replace_object.c:92, submodule.c:13,
submodule.c:14, trace.c:78, transport.c:195, transport-helper.c:79,
unpack-trees.c:19, url.c:3, url.c:18, url.c:104, url.c:117, url.c:123,
url.c:129, url.c:136, thread-utils.c:21, thread-utils.c:48
- These files redeclare symbols to be different types:
builtin/index-pack.c:210, parse-options.c:564, parse-options.c:571,
usage.c:49, usage.c:58, usage.c:63, usage.c:72
- These files use a literal integer 0 when they really should use a NULL
pointer:
daemon.c:663, fast-import.c:2942, imap-send.c:1072, notes-merge.c:362
While we're in the area, clean up some unused #includes in builtin files
(mostly exec_cmd.h).
Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
Prepare draft release notes to 1.7.4.2
gitweb: highlight: replace tabs with spaces
make_absolute_path: return the input path if it points to our buffer
valgrind: ignore SSE-based strlen invalid reads
diff --submodule: split into bite-sized pieces
cherry: split off function to print output lines
branch: split off function that writes tracking info and commit subject
standardize brace placement in struct definitions
compat: make gcc bswap an inline function
enums: omit trailing comma for portability
Conflicts:
RelNotes
In a struct definitions, unlike functions, the prevailing style is for
the opening brace to go on the same line as the struct name, like so:
struct foo {
int bar;
char *baz;
};
Indeed, grepping for 'struct [a-z_]* {$' yields about 5 times as many
matches as 'struct [a-z_]*$'.
Linus sayeth:
Heretic people all over the world have claimed that this inconsistency
is ... well ... inconsistent, but all right-thinking people know that
(a) K&R are _right_ and (b) K&R are right.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* sp/maint-fd-limit:
sha1_file.c: Don't retain open fds on small packs
mingw: add minimum getrlimit() compatibility stub
Limit file descriptors used by packs
If a pack file is small enough that its entire contents fits within
one mmap window, mmap the file and then immediately close its file
descriptor. This reduces the number of file descriptors that are
needed to read from repositories with many tiny pack files, such
as one that has received 1000 pushes (and created 1000 small pack
files) since its last repack.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The dereference() function to peel a tree-ish and find the underlying
tree expects arithmetic to (void *) to work on byte addresses. We
should be reading the text of objects through a char * anyway.
Noticed-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Remove two globals, pack_idx_default version and pack_idx_off32_limit,
and place them in a pack_idx_option structure. Allow callers to pass
it to write_idx_file() as a parameter.
Adjust all callers to the API change.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Lazy fast-import frontend authors that want to rely on the backend to
keep track of the content of the imported trees _almost_ have what
they need in the 'cat-blob' command (v1.7.4-rc0~30^2~3, 2010-11-28).
But it is not quite enough, since
(1) cat-blob can be used to retrieve the content of files, but
not their mode, and
(2) using cat-blob requires the frontend to keep track of a name
(mark number or object id) for each blob to be retrieved
Introduce an 'ls' command to complement cat-blob and take care of the
remaining needs. The 'ls' command finds what is at a given path
within a given tree-ish (tag, commit, or tree):
'ls' SP <dataref> SP <path> LF
or in fast-import's active commit:
'ls' SP <path> LF
The response is a single line sent through the cat-blob channel,
imitating ls-tree output. So for example:
FE> ls :1 Documentation
gfi> 040000 tree 9e6c2b599341d28a2a375f8207507e0a2a627fe9 Documentation
FE> ls 9e6c2b599341d28a2a375f8207507e0a2a627fe9 git-fast-import.txt
gfi> 100644 blob 4f92954396e3f0f97e75b6838a5635b583708870 git-fast-import.txt
FE> ls :1 RelNotes
gfi> 120000 blob b942e49944 RelNotes
FE> cat-blob b942e49944
gfi> b942e49944 blob 32
gfi> Documentation/RelNotes/1.7.4.txt
The most interesting parts of the reply are the first word, which is
a 6-digit octal mode (regular file, executable, symlink, directory,
or submodule), and the part from the second space to the tab, which is
a <dataref> that can be used in later cat-blob, ls, and filemodify (M)
commands to refer to the content (blob, tree, or commit) at that path.
If there is nothing there, the response is "missing some/path".
The intent is for this command to be used to read files from the
active commit, so a frontend can apply patches to them, and to copy
files and directories from previous revisions.
For example, proposed updates to svn-fe use this command in place of
its internal representation of the repository directory structure.
This simplifies the frontend a great deal and means support for
resuming an import in a separate fast-import run (i.e., incremental
import) is basically free.
Signed-off-by: David Barr <david.barr@cordelta.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Improved-by: Junio C Hamano <gitster@pobox.com>
Improved-by: Sverre Rabbelier <srabbelier@gmail.com>
Here is a 'feature' command for streams to use to require support for
the notemodify (N) command.
When the 'feature' facility was introduced (v1.7.0-rc0~95^2~4,
2009-12-04), the notes import feature was old news (v1.6.6-rc0~21^2~8,
2009-10-09) and it was not obvious it deserved to be a named feature.
But now that is clear, since all major non-git fast-import backends
lack support for it.
Details: on git version with this patch applied, any "feature notes"
command in the features/options section at the beginning of a stream
will be treated as a no-op. On fast-import implementations without
the feature (and older git versions), the command instead errors out
with a message like
This version of fast-import does not support feature notes.
So by declaring use of notes at the beginning of a stream, frontends
can avoid wasting time and other resources when the backend does not
support notes. (This would be especially important for backends that
do not support rewinding history after a botched import.)
Improved-by: Thomas Rast <trast@student.ethz.ch>
Improved-by: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
rebase -i: clarify in-editor documentation of "exec"
tests: sanitize more git environment variables
fast-import: treat filemodify with empty tree as delete
rebase: give a better error message for bogus branch
rebase: use explicit "--" with checkout
Conflicts:
t/t9300-fast-import.sh
Normal git processes do not allow one to build a tree with an empty
subtree entry without trying hard at it. This is in keeping with the
general UI philosophy: git tracks content, not empty directories.
v1.7.3-rc0~75^2 (2010-06-30) changed that by making it easy to include
an empty subtree in fast-import's active commit:
M 040000 4b825dc642 subdir
One can trigger this by reading an empty tree (for example, the tree
corresponding to an empty root commit) and trying to move it to a
subtree. It is better and more closely analogous to 'git read-tree
--prefix' to treat such commands as requests to remove the subtree.
Noticed-by: David Barr <david.barr@cordelta.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When a frontend uses a marks file to ensure its state persists between
runs, it may represent "clean slate" when bootstrapping with "no marks
yet". In such a case, feeding the last state with --import-marks and
saving the state after the current run with --export-marks would be a
natural thing to do.
The --import-marks option however errors out when the specified marks file
doesn't exist; this makes bootstrapping a bit difficult. The location of
the marks file becomes backend-dependent when --relative-marks is in
effect, and the frontend cannot check for the existence of the file in
such a case.
The --import-marks-if-exists option does the same thing as --import-marks
but does not flag an error if the named file does not exist yet to help
these frontends.
Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* jn/fast-import-blob-access:
t9300: avoid short reads from dd
t9300: remove unnecessary use of /dev/stdin
fast-import: Allow cat-blob requests at arbitrary points in stream
fast-import: let importers retrieve blobs
fast-import: clarify documentation of "feature" command
fast-import: stricter parsing of integer options
Conflicts:
fast-import.c
* jj/icase-directory:
Support case folding in git fast-import when core.ignorecase=true
Support case folding for git add when core.ignorecase=true
Add case insensitivity support when using git ls-files
Add case insensitivity support for directories when using git status
Case insensitivity support for .gitignore via core.ignorecase
Add string comparison functions that respect the ignore_case variable.
Makefile & configure: add a NO_FNMATCH_CASEFOLD flag
Makefile & configure: add a NO_FNMATCH flag
Conflicts:
Makefile
config.mak.in
configure.ac
fast-import.c
The new rule: a "cat-blob" can be inserted wherever a comment is
allowed, which means at the start of any line except in the middle of
a "data" command.
This saves frontends from having to loop over everything they want to
commit in the next commit and cat-ing the necessary objects in
advance.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: David Barr <david.barr@cordelta.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
New objects written by fast-import are not available immediately.
Until a checkpoint has been started and finishes writing the pack
index, any new blobs will not be accessible using standard git tools.
So introduce a new way to access them: a "cat-blob" command in the
command stream requests for fast-import to print a blob to stdout or a
file descriptor specified by the argument to --cat-blob-fd. The value
for cat-blob-fd cannot be specified in the stream because that would
be a layering violation: the decision of where to direct a stream has
to be made when fast-import is started anyway, so we might as well
make the stream format is independent of that detail.
Output uses the same format as "git cat-file --batch".
Thanks to Sverre Rabbelier and Sam Vilain for guidance in designing
the protocol.
Based-on-patch-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: David Barr <david.barr@cordelta.com>
Acked-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Check the result from strtoul to avoid accepting arguments like
--depth=-1 and --active-branches=foo,bar,baz.
Requested-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* jn/fast-import-fix:
fast-import: do not clear notes in do_change_note_fanout()
t9300 (fast-import): another test for the "replace root" feature
fast-import: tighten M 040000 syntax
fast-import: filemodify after M 040000 <tree> "" crashes
It can be tedious to wait for a multi-million-revision import.
Unfortunately it is hard to spy on the import because fast-import
works by continuously streaming out objects, without updating the pack
index or refs until a checkpoint command or the end of the stream.
So allow the impatient operator to request checkpoints by sending a
signal, like so:
killall -USR1 git-fast-import
When receiving such a signal, fast-import would schedule a checkpoint
to take place after the current top-level command (usually a "commit"
or "blob" request) finishes.
Caveats: just like ordinary checkpoint commands, such requests slow
down the import. Switching to a new pack at a suboptimal moment is
also likely to result in a less dense initial collection of packs.
That's the price.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
More often than not, find_object is called for recently inserted objects.
Optimise for this case by inserting new entries at the start of the chain.
This doesn't affect the cost of new inserts but reduces the cost of find
and insert for existing object entries.
Signed-off-by: David Barr <david.barr@cordelta.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit 5edde51 (fast-import: filemodify after M 040000 <tree> ""
crashes, 2010-10-17) taught fast-import to load trees from the
object db as needed when it is time to access them.
But it went too far. In change_note_fanout(), an empty,
not-loaded tree is not meant to destroy notes, so calling
load_tree() at that point is exactly the wrong thing to do.
Kudos to Johan Herland for t9301, which caught this failure.
Reported-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When tree_content_set() is asked to modify the path "foo/bar/",
it first recurses like so:
tree_content_set(root, "foo/bar/", sha1, S_IFDIR) ->
tree_content_set(root:foo, "bar/", ...) ->
tree_content_set(root:foo/bar, "", ...)
And as a side-effect of 2794ad5 (fast-import: Allow filemodify to set
the root, 2010-10-10), this last call is accepted and changes
the tree entry for root:foo/bar to refer to the specified tree.
That seems safe enough but let's reject the new syntax (we never meant
to support it) and make it harder for frontends to introduce pointless
incompatibilities with git fast-import 1.7.3.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Until M 040000 <tree> "" syntax was introduced in commit 2794ad5
(fast-import: Allow filemodify to set the root, 2010-10-10), it
was impossible for the root entry to refer to an unloaded tree.
Update various functions to take that possibility into account.
Otherwise
M 040000 <tree> ""
M 100644 :1 "foo"
and similar commands (using D, C, or R after resetting the root
tree) segfault.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
v1.7.3-rc0~75^2 (Teach fast-import to import subtrees named by tree id,
2010-06-30) has a shortcoming - it doesn't allow the root to be set.
Extend this behaviour by allowing the root to be referenced as the
empty path, "".
For a command (like filter-branch --subdirectory-filter) that wants
to commit a lot of trees that already exist in the object db, writing
undeltified objects as loose files only to repack them later can
involve a significant amount of overhead.
(23% slow-down observed on Linux 2.6.35, worse on Mac OS X 10.6)
Fortunately we have fast-import (which is one of the only git commands
that will write to a pack directly) but there is not an advertised way
to tell fast-import to commit a given tree without unpacking it.
This patch changes that, by allowing
M 040000 <tree id> ""
as a filemodify line in a commit to reset to a particular tree without
any need to parse it. For example,
M 040000 4b825dc642 ""
is a synonym for the deleteall command and the fast-import equivalent of
git read-tree 4b825dc642
Signed-off-by: David Barr <david.barr@cordelta.com>
Commit-message-by: Jonathan Nieder <jrnieder@gmail.com>
Acked-by: Sverre Rabbelier <srabbelier@gmail.com>
Tested-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When core.ignorecase=true, imported file paths will be folded to match
existing directory case.
Signed-off-by: Joshua Jensen <jjensen@workspacewhiz.com>
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* en/d-f-conflict-fix:
merge-recursive: Avoid excessive output for and reprocessing of renames
merge-recursive: Fix multiple file rename across D/F conflict
t6031: Add a testcase covering multiple renames across a D/F conflict
merge-recursive: Fix typo
Mark tests that use symlinks as needing SYMLINKS prerequisite
t/t6035-merge-dir-to-symlink.sh: Remove TODO on passing test
fast-import: Improve robustness when D->F changes provided in wrong order
fast-export: Fix output order of D/F changes
merge_recursive: Fix renames across paths below D/F conflicts
merge-recursive: Fix D/F conflicts
Add a rename + D/F conflict testcase
Add additional testcases for D/F conflicts
Conflicts:
merge-recursive.c
dump_marks_helper() has a bug when dumping marks larger than 2^20-1,
i.e., when the sparse array has more than two levels. The bug was
that the 'base' counter was being shifted by 20 bits at level 3, and
then again by 10 bits at level 2, rather than a total shift of 20 bits
in this argument to the recursive call:
(base + k) << m->shift
There are two ways to fix this correctly, the elegant:
(base + k) << 10
and the one I chose due to edit distance:
base + (k << m->shift)
Signed-off-by: Raja R Harinath <harinath@hurrynot.org>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When older versions of fast-export came across a directory changing to a
symlink (or regular file), it would output the changes in the form
M 120000 :239821 dir-changing-to-symlink
D dir-changing-to-symlink/filename1
When fast-import sees the first line, it deletes the directory named
dir-changing-to-symlink (and any files below it) and creates a symlink in
its place. When fast-import came across the second line, it was previously
trying to remove the file and relevant leading directories in
tree_content_remove(), and as a side effect it would delete the symlink
that was just created. This resulted in the symlink silently missing from
the resulting repository.
To improve robustness, we ignore file deletions underneath directory names
that correspond to non-directories. This can also be viewed as a minor
optimization: since there cannot be a file and a directory with the same
name in the same directory, the file clearly can't exist so nothing needs
to be done to delete it.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
To simulate the svn cp command, it would be very useful to be
replace an arbitrary file in the current revision by an
arbitrary directory from a previous one. Modify the filemodify
command to allow that:
M 040000 <tree id> pathname
This would be most useful in combination with a facility to
print the commit ids for new revisions as they are written.
Cc: Shawn O. Pearce <spearce@spearce.org>
Cc: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* gv/portable:
test-lib: use DIFF definition from GIT-BUILD-OPTIONS
build: propagate $DIFF to scripts
Makefile: Tru64 portability fix
Makefile: HP-UX 10.20 portability fixes
Makefile: HPUX11 portability fixes
Makefile: SunOS 5.6 portability fix
inline declaration does not work on AIX
Allow disabling "inline"
Some platforms lack socklen_t type
Make NO_{INET_NTOP,INET_PTON} configured independently
Makefile: some platforms do not have hstrerror anywhere
git-compat-util.h: some platforms with mmap() lack MAP_FAILED definition
test_cmp: do not use "diff -u" on platforms that lack one
fixup: do not unconditionally disable "diff -u"
tests: use "test_cmp", not "diff", when verifying the result
Do not use "diff" found on PATH while building and installing
enums: omit trailing comma for portability
Makefile: -lpthread may still be necessary when libc has only pthread stubs
Rewrite dynamic structure initializations to runtime assignment
Makefile: pass CPPFLAGS through to fllow customization
Conflicts:
Makefile
wt-status.h
Without this patch at least IBM VisualAge C 5.0 (I have 5.0.2) on AIX
5.1 fails to compile git.
enum style is inconsistent already, with some enums declared on one
line, some over 3 lines with the enum values all on the middle line,
sometimes with 1 enum value per line... and independently of that the
trailing comma is sometimes present and other times absent, often
mixing with/without trailing comma styles in a single file, and
sometimes in consecutive enum declarations.
Clearly, omitting the comma is the more portable style, and this patch
changes all enum declarations to use the portable omitted dangling
comma style consistently.
Signed-off-by: Gary V. Vaughan <gary@thewrittenword.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The following function is duplicated:
encode_header
Move this function to sha1_file.c and rename it 'encode_in_pack_object_header',
as suggested by Junio C Hamano
Signed-off-by: Michael Lukashov <michael.lukashov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This let diff_delta() abort early if it is going to bust the given
size limit. Also, only objects larger than 20 bytes are considered
as objects smaller than that are most certainly going to produce
larger deltas than the original object due to the additional headers.
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Now that fast-import is creating packs with index version 2, there is
no point limiting the pack size by default. A pack split will still
happen if off_t is not sufficiently large to hold large offsets.
While updating the doc, let's remove the "packfiles fit on CDs"
suggestion. Pack files created by fast-import are still suboptimal and
a 'git repack -a -f -d' or even 'git gc --aggressive' would be a pretty
good idea before considering storage on CDs.
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This allows for the creation of pack index version 2 with its object
CRC and the possibility for a pack to be larger than 4 GB.
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is in preparation for using write_idx_file(). Also, by using
sha1write() we get some buffering to reduces the number of write
syscalls, and the written data is SHA1 summed which allows for the extra
data integrity validation check performed in fixup_pack_header_footer()
(details on this in commit abeb40e5aa).
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Similar in spirit to 07cf0f2 (make --max-pack-size argument to 'git
pack-object' count in bytes, 2010-02-03) which made the option by the same
name to pack-objects, this counts the pack size limit in bytes.
In order not to cause havoc with people used to the previous megabyte
scale an integer smaller than 8192 is interpreted in megabytes but the
user gets a warning. Also a minimum size of 1 MiB is enforced to avoid an
explosion of pack files.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Manual merge made at 844ad3d (Merge branch 'sp/maint-fast-import-large-blob'
into sp/fast-import-large-blob, 2010-02-01) did not correctly reflect the change
of unit in which this variable's value is counted from its previous version.
Now it counts in bytes, not in megabytes.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
* sp/maint-fast-import-large-blob:
fast-import: Stream very large blobs directly to pack
bash: don't offer remote transport helpers as subcommands
Conflicts:
fast-import.c
If a blob is larger than the configured big-file-threshold, instead
of reading it into a single buffer obtained from malloc, stream it
onto the end of the current pack file. Streaming the larger objects
into the pack avoids the 4+ GiB memory footprint that occurs when
fast-import is processing 2+ GiB blobs.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* 'jh/notes' (early part):
Add more testcases to test fast-import of notes
Rename t9301 to t9350, to make room for more fast-import tests
fast-import: Proper notes tree manipulation
* sr/gfi-options:
fast-import: add (non-)relative-marks feature
fast-import: allow for multiple --import-marks= arguments
fast-import: test the new option command
fast-import: add option command
fast-import: add feature command
fast-import: put marks reading in its own function
fast-import: put option parsing code in separate functions
If you tried to export the official git repository, and then to import it
back then git-fast-import would die complaining that "Mark :1 not a commit".
Accordingly to a generated crash file, Mark 1 is not a commit but a blob,
which is pointed by junio-gpg-pub tag. Because git-tag allows to create such
tags, git-fast-import should import them.
Signed-off-by: Dmitry Potapov <dpotapov@gmail.com>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The fast-import parser does not validate that the author, committer
or tagger name component contains both a name and an email address.
Therefore the name component has always been optional. Correct the
documentation to match the implementation.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This patch teaches 'git fast-import' to automatically organize note objects
in a fast-import stream into an appropriate fanout structure. The notes API
in notes.h is NOT used to accomplish this, because trying to keep the
fast-import and notes data structures in sync would yield a significantly
larger patch with higher complexity.
Note objects are added with the 'N' command, and accounted for with a
per-branch counter, which is used to trigger fanout restructuring when
needed. Note that when restructuring the branch tree, _any_ entry whose
path consists of 40 hex chars (not including directory separators) will
be recognized as a note object. It is therefore not advisable to
manipulate note entries with M/D/R/C commands.
Since note objects are stored in the same tree structure as other objects,
the unloading and reloading of a fast-import branches handle note objects
transparently.
This patch has been improved by the following contributions:
- Shawn O. Pearce: Several style- and logic-related improvements
Cc: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
After specifying 'feature relative-marks' the paths specified with
'feature import-marks' and 'feature export-marks' are relative to an
internal directory in the current repository.
In git-fast-import this means that the paths are relative to the
'.git/info/fast-import' directory. However, other importers may use a
different location.
Add 'feature non-relative-marks' to disable this behavior, this way
it is possible to, for example, specify the import-marks location as
relative, and the export-marks location as non-relative.
Also add tests to verify this behavior.
Cc: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The --import-marks= option may be specified multiple times on the
commandline and should result in all marks being read in. Only one
import-marks feature may be specified in the stream, which is
overriden by any --import-marks= commandline options.
If one wishes to specify import-marks files in addition to the one
specified in the stream, it is easy to repeat the stream option as a
--import-marks= commandline option.
Also verify this behavior with tests.
Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This allows the frontend to specify any of the supported options as
long as no non-option command has been given. This way the
user does not have to include any frontend-specific options, but
instead she can rely on the frontend to tell fast-import what it
needs.
Also factor out parsing of argv and have it execute when we reach the
first non-option command, or after all commands have been read and
no non-option command has been encountered.
Non-git options are ignored, unrecognised options result in an error.
Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This allows the fronted to require a specific feature to be supported
by the backend, or abort.
Also add support for four initial feature, date-format=, force=,
import-marks=, export-marks=.
Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
All options do nothing but set settings, with the exception of the
--input-marks option. Delay the reading of the marks file till after
all options have been parsed.
Also, rename mark_file to export_marks_file as it is now ambiguous.
Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Putting the options in their own functions increases readability of
the option parsing block and makes it easier to reuse the option
parsing code later on.
Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* 'jh/notes' (early part):
Add selftests verifying concatenation of multiple notes for the same commit
Refactor notes code to concatenate multiple notes annotating the same object
Add selftests verifying that we can parse notes trees with various fanouts
Teach the notes lookup code to parse notes trees with various fanout schemes
Teach notes code to free its internal data structures on request
Add '%N'-format for pretty-printing commit notes
Add flags to get_commit_notes() to control the format of the note string
t3302-notes-index-expensive: Speed up create_repo()
fast-import: Add support for importing commit notes
Teach "-m <msg>" and "-F <file>" to "git notes edit"
Add an expensive test for git-notes
Speed up git notes lookup
Add a script to edit/inspect notes
Introduce commit notes
Conflicts:
.gitignore
Documentation/pretty-formats.txt
pretty.c
Let "git fast-import -h" (with no other arguments) print usage
before exiting, even when run outside any repository.
Cc: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Introduce a 'notemodify' subcommand of the 'commit' command. This subcommand
is similar to 'filemodify', except that no mode is supplied (all notes have
mode 0644), and the path is set to the hex SHA1 of the given "comittish".
This enables fast import of note objects along with their associated commits,
since the notes can now be named using the mark references of their
corresponding commits.
The patch also includes a test case of the added functionality.
Signed-off-by: Johan Herland <johan@herland.net>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When reading the "raw format" timestamp from the input stream, make sure
that the timezone offset is a reasonable value by imitating 7122f82
(date.c: improve guess between timezone offset and year., 2006-06-08).
We _might_ want to also check if the timestamp itself is reasonable, but
that is left for a separate commit.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Lots of die() calls did not actually report the kind of error, which
can leave the user confused as to the real problem. Use die_errno()
where we check a system/library call that sets errno on failure, or
one of the following that wrap such calls:
Function Passes on error from
-------- --------------------
odb_pack_keep open
read_ancestry fopen
read_in_full xread
strbuf_read xread
strbuf_read_file open or strbuf_read_file
strbuf_readlink readlink
write_in_full xwrite
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change calls to die(..., strerror(errno)) to use the new die_errno().
In the process, also make slight style adjustments: at least state
_something_ about the function that failed (instead of just printing
the pathname), and put paths in single quotes.
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* ar/unlink-err:
print unlink(2) errno in copy_or_link_directory
replace direct calls to unlink(2) with unlink_or_warn
Introduce an unlink(2) wrapper which gives warning if unlink failed
Essentially; s/type* /type */ as per the coding guidelines.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This helps to notice when something's going wrong, especially on
systems which lock open files.
I used the following criteria when selecting the code for replacement:
- it was already printing a warning for the unlink failures
- it is in a function which already printing something or is
called from such a function
- it is in a static function, returning void and the function is only
called from a builtin main function (cmd_)
- it is in a function which handles emergency exit (signal handlers)
- it is in a function which is obvously cleaning up the lockfiles
Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A few more fixes on top of the automatic spell checker generated ones.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* jc/shared-literally:
t1301: loosen test for forced modes
set_shared_perm(): sometimes we know what the final mode bits should look like
move_temp_to_file(): do not forget to chmod() in "Coda hack" codepath
Move chmod(foo, 0444) into move_temp_to_file()
"core.sharedrepository = 0mode" should set, not loosen
When writing out a loose object or a pack (index), move_temp_to_file() is
called to finalize the resulting file. These files (loose files and packs)
should all have permission mode 0444 (modulo adjust_shared_perm()).
Therefore, instead of doing chmod(foo, 0444) explicitly from each callsite
(or even forgetting to chmod() at all), do the chmod() call from within
move_temp_to_file().
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
These variables were unused and can be removed safely:
builtin-clone.c::cmd_clone(): use_local_hardlinks, use_separate_remote
builtin-fetch-pack.c::find_common(): len
builtin-remote.c::mv(): symref
diff.c::show_stats():show_stats(): total
diffcore-break.c::should_break(): base_size
fast-import.c::validate_raw_date(): date, sign
fsck.c::fsck_tree(): o_sha1, sha1
xdiff-interface.c::parse_num(): read_some
Signed-off-by: Benjamin Kramer <benny.kra@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In a repository created with git older than f49fb35 (git-init-db: create
"pack" subdirectory under objects, 2005-06-27), objects/pack/ directory is
not created upon initialization. It was Ok because subdirectories are
created as needed inside directories init-db creates, and back then,
packfiles were recent invention.
After the said commit, new codepaths started relying on the presense of
objects/pack/ directory in the repository. This was exacerbated with
8b4eb6b (Do not perform cross-directory renames when creating packs,
2008-09-22) that moved the location temporary pack files are created from
objects/ directory to objects/pack/ directory, because moving temporary to
the final location was done carefully with lazy leading directory creation.
Many packfile related operations in such an old repository can fail
mysteriously because of this.
This commit introduces two helper functions to make things work better.
- odb_mkstemp() is a specialized version of mkstemp() to refactor the
code and teach it to create leading directories as needed;
- odb_pack_keep() refactors the code to create a ".keep" file while
create leading directories as needed.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Otherwise we may reuse the same memory address for a totally
different "struct packed_git", and a previously cached object from
the prior occupant might be returned when trying to unpack an object
from the new pack.
Found-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Programs that use git_config need to find the global configuration.
When runtime prefix computation is enabled, this requires that
git_extract_argv0_path() is called early in the program's main().
This commit adds the necessary calls.
Signed-off-by: Steffen Prohaska <prohaska@zib.de>
Acked-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"S_IFREG | mode" makes only sense for 0644 and 0755.
Even though doing (S_IFREG | mode) may not hurt when mode is any other
supported value, that is only true because S_IFREG mode bit happens to
be already on for S_IFLNK or S_IFGITLINK.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Store the return value of strtoul() in order to avoid compiler
warnings on Ubuntu 8.10.
Also check errno after each call, which is the only way to notice
an overflow without making ULONG_MAX an illegal date.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Even though newer Porcelain tools always record the tagger information
when creating new tags, export/import pair should be able to faithfully
reproduce ancient tag objects that lack tagger information.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
* maint:
fast-import: close pack before unlinking it
pager: do not dup2 stderr if it is already redirected
git-show: do not segfault when showing a bad tag
This is sort of a companion patch to 4723ee9(Close files opened by
lock_file() before unlinking.): on Windows, you cannot delete what
is still open.
This makes test 9300-fast-import pass on Windows for me; quite a few
fast-imports leave temporary packs until the test "blank lines not
necessary after other commands" actually tests for the number of files
in .git/objects/pack/, which has a few temporary packs now.
I guess that 8b4eb6b(Do not perform cross-directory renames when
creating packs) was "responsible" for the breakage.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano
Sverre Rabbelier
Stephen Boyd
Jonathan Nieder
Shawn O. Pearce
David Barr
Ramkumar Ramachandra
Štěpán Němec
Joshua Jensen
Raja R Harinath
Elijah Newren
Gary V. Vaughan
Michael Lukashov
Nicolas Pitre
Dmitry Potapov
Johan Herland
Thomas Rast
Felipe Contreras
Alex Riesen
Michael J Gruber
Mike Ralphson
Benjamin Kramer
Steffen Prohaska
René Scharfe
Johannes Schindelin