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-rw-r--r--Documentation/git-fast-import.txt3
-rw-r--r--builtin-fast-export.c19
-rw-r--r--fast-import.c16
-rwxr-xr-xt/t9300-fast-import.sh152
-rwxr-xr-xt/t9301-fast-export.sh42
5 files changed, 227 insertions, 5 deletions
diff --git a/Documentation/git-fast-import.txt b/Documentation/git-fast-import.txt
index 2d01d0d10..c2f483a8d 100644
--- a/Documentation/git-fast-import.txt
+++ b/Documentation/git-fast-import.txt
@@ -481,6 +481,9 @@ in octal. Git only supports the following modes:
what you want.
* `100755` or `755`: A normal, but executable, file.
* `120000`: A symlink, the content of the file will be the link target.
+* `160000`: A gitlink, SHA-1 of the object refers to a commit in
+ another repository. Git links can only be specified by SHA or through
+ a commit mark. They are used to implement submodules.
In both formats `<path>` is the complete path of the file to be added
(if not already existing) or modified (if already existing).
diff --git a/builtin-fast-export.c b/builtin-fast-export.c
index 76f316727..a443d5946 100644
--- a/builtin-fast-export.c
+++ b/builtin-fast-export.c
@@ -136,9 +136,18 @@ static void show_filemodify(struct diff_queue_struct *q,
if (is_null_sha1(spec->sha1))
printf("D %s\n", spec->path);
else {
- struct object *object = lookup_object(spec->sha1);
- printf("M %06o :%d %s\n", spec->mode,
- get_object_mark(object), spec->path);
+ /*
+ * Links refer to objects in another repositories;
+ * output the SHA-1 verbatim.
+ */
+ if (S_ISGITLINK(spec->mode))
+ printf("M %06o %s %s\n", spec->mode,
+ sha1_to_hex(spec->sha1), spec->path);
+ else {
+ struct object *object = lookup_object(spec->sha1);
+ printf("M %06o :%d %s\n", spec->mode,
+ get_object_mark(object), spec->path);
+ }
}
}
}
@@ -196,8 +205,10 @@ static void handle_commit(struct commit *commit, struct rev_info *rev)
diff_root_tree_sha1(commit->tree->object.sha1,
"", &rev->diffopt);
+ /* Export the referenced blobs, and remember the marks. */
for (i = 0; i < diff_queued_diff.nr; i++)
- handle_object(diff_queued_diff.queue[i]->two->sha1);
+ if (!S_ISGITLINK(diff_queued_diff.queue[i]->two->mode))
+ handle_object(diff_queued_diff.queue[i]->two->sha1);
mark_next_object(&commit->object);
if (!is_encoding_utf8(encoding))
diff --git a/fast-import.c b/fast-import.c
index c4d054ecc..7089e6f9e 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -1868,6 +1868,7 @@ static void file_change_m(struct branch *b)
case S_IFREG | 0644:
case S_IFREG | 0755:
case S_IFLNK:
+ case S_IFGITLINK:
case 0644:
case 0755:
/* ok */
@@ -1900,7 +1901,20 @@ static void file_change_m(struct branch *b)
p = uq.buf;
}
- if (inline_data) {
+ if (S_ISGITLINK(mode)) {
+ if (inline_data)
+ die("Git links cannot be specified 'inline': %s",
+ command_buf.buf);
+ else if (oe) {
+ if (oe->type != OBJ_COMMIT)
+ die("Not a commit (actually a %s): %s",
+ typename(oe->type), command_buf.buf);
+ }
+ /*
+ * Accept the sha1 without checking; it expected to be in
+ * another repository.
+ */
+ } else if (inline_data) {
static struct strbuf buf = STRBUF_INIT;
if (p != uq.buf) {
diff --git a/t/t9300-fast-import.sh b/t/t9300-fast-import.sh
index e17afa8c3..1fc06c5a2 100755
--- a/t/t9300-fast-import.sh
+++ b/t/t9300-fast-import.sh
@@ -918,4 +918,156 @@ test_expect_success \
grep "progress " <input >expect &&
test_cmp expect actual'
+###
+### series P (gitlinks)
+###
+
+cat >input <<INPUT_END
+blob
+mark :1
+data 10
+test file
+
+reset refs/heads/sub
+commit refs/heads/sub
+mark :2
+committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
+data 12
+sub_initial
+M 100644 :1 file
+
+blob
+mark :3
+data <<DATAEND
+[submodule "sub"]
+ path = sub
+ url = "`pwd`/sub"
+DATAEND
+
+commit refs/heads/subuse1
+mark :4
+committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
+data 8
+initial
+from refs/heads/master
+M 100644 :3 .gitmodules
+M 160000 :2 sub
+
+blob
+mark :5
+data 20
+test file
+more data
+
+commit refs/heads/sub
+mark :6
+committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
+data 11
+sub_second
+from :2
+M 100644 :5 file
+
+commit refs/heads/subuse1
+mark :7
+committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
+data 7
+second
+from :4
+M 160000 :6 sub
+
+INPUT_END
+
+test_expect_success \
+ 'P: supermodule & submodule mix' \
+ 'git-fast-import <input &&
+ git checkout subuse1 &&
+ rm -rf sub && mkdir sub && cd sub &&
+ git init &&
+ git fetch .. refs/heads/sub:refs/heads/master &&
+ git checkout master &&
+ cd .. &&
+ git submodule init &&
+ git submodule update'
+
+SUBLAST=$(git-rev-parse --verify sub)
+SUBPREV=$(git-rev-parse --verify sub^)
+
+cat >input <<INPUT_END
+blob
+mark :1
+data <<DATAEND
+[submodule "sub"]
+ path = sub
+ url = "`pwd`/sub"
+DATAEND
+
+commit refs/heads/subuse2
+mark :2
+committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
+data 8
+initial
+from refs/heads/master
+M 100644 :1 .gitmodules
+M 160000 $SUBPREV sub
+
+commit refs/heads/subuse2
+mark :3
+committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
+data 7
+second
+from :2
+M 160000 $SUBLAST sub
+
+INPUT_END
+
+test_expect_success \
+ 'P: verbatim SHA gitlinks' \
+ 'git branch -D sub &&
+ git gc && git prune &&
+ git-fast-import <input &&
+ test $(git-rev-parse --verify subuse2) = $(git-rev-parse --verify subuse1)'
+
+test_tick
+cat >input <<INPUT_END
+commit refs/heads/subuse3
+mark :1
+committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
+data <<COMMIT
+corrupt
+COMMIT
+
+from refs/heads/subuse2
+M 160000 inline sub
+data <<DATA
+$SUBPREV
+DATA
+
+INPUT_END
+
+test_expect_success 'P: fail on inline gitlink' '
+ ! git-fast-import <input'
+
+test_tick
+cat >input <<INPUT_END
+blob
+mark :1
+data <<DATA
+$SUBPREV
+DATA
+
+commit refs/heads/subuse3
+mark :2
+committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
+data <<COMMIT
+corrupt
+COMMIT
+
+from refs/heads/subuse2
+M 160000 :1 sub
+
+INPUT_END
+
+test_expect_success 'P: fail on blob mark in gitlink' '
+ ! git-fast-import <input'
+
test_done
diff --git a/t/t9301-fast-export.sh b/t/t9301-fast-export.sh
index 0959f2f81..8324f6e3b 100755
--- a/t/t9301-fast-export.sh
+++ b/t/t9301-fast-export.sh
@@ -143,4 +143,46 @@ test_expect_success 'signed-tags=strip' '
'
+test_expect_success 'setup submodule' '
+
+ git checkout -f master &&
+ mkdir sub &&
+ cd sub &&
+ git init &&
+ echo test file > file &&
+ git add file &&
+ git commit -m sub_initial &&
+ cd .. &&
+ git submodule add "`pwd`/sub" sub &&
+ git commit -m initial &&
+ test_tick &&
+ cd sub &&
+ echo more data >> file &&
+ git add file &&
+ git commit -m sub_second &&
+ cd .. &&
+ git add sub &&
+ git commit -m second
+
+'
+
+test_expect_success 'submodule fast-export | fast-import' '
+
+ SUBENT1=$(git ls-tree master^ sub) &&
+ SUBENT2=$(git ls-tree master sub) &&
+ rm -rf new &&
+ mkdir new &&
+ git --git-dir=new/.git init &&
+ git fast-export --signed-tags=strip --all |
+ (cd new &&
+ git fast-import &&
+ test "$SUBENT1" = "$(git ls-tree refs/heads/master^ sub)" &&
+ test "$SUBENT2" = "$(git ls-tree refs/heads/master sub)" &&
+ git checkout master &&
+ git submodule init &&
+ git submodule update &&
+ cmp sub/file ../sub/file)
+
+'
+
test_done