From 3421578393a5983db6fa76a203c9dee95c74801d Mon Sep 17 00:00:00 2001 From: Jonathan Nieder Date: Sun, 17 Oct 2010 20:08:53 -0500 Subject: fast-import: tighten M 040000 syntax 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 Signed-off-by: Junio C Hamano --- fast-import.c | 34 +++++++++++++++++++++++++--------- 1 file changed, 25 insertions(+), 9 deletions(-) (limited to 'fast-import.c') diff --git a/fast-import.c b/fast-import.c index aaf47c5745..cb947c10d7 100644 --- a/fast-import.c +++ b/fast-import.c @@ -1437,6 +1437,20 @@ static void store_tree(struct tree_entry *root) t->entry_count -= del; } +static void tree_content_replace( + struct tree_entry *root, + const unsigned char *sha1, + const uint16_t mode, + struct tree_content *newtree) +{ + if (!S_ISDIR(mode)) + die("Root cannot be a non-directory"); + hashcpy(root->versions[1].sha1, sha1); + if (root->tree) + release_tree_content_recursive(root->tree); + root->tree = newtree; +} + static int tree_content_set( struct tree_entry *root, const char *p, @@ -1454,15 +1468,6 @@ static int tree_content_set( n = slash1 - p; else n = strlen(p); - if (!slash1 && !n) { - if (!S_ISDIR(mode)) - die("Root cannot be a non-directory"); - hashcpy(root->versions[1].sha1, sha1); - if (root->tree) - release_tree_content_recursive(root->tree); - root->tree = subtree; - return 1; - } if (!n) die("Empty path component found in input"); if (!slash1 && !S_ISDIR(mode) && subtree) @@ -2230,6 +2235,10 @@ static void file_change_m(struct branch *b) command_buf.buf); } + if (!*p) { + tree_content_replace(&b->branch_tree, sha1, mode, NULL); + return; + } tree_content_set(&b->branch_tree, p, sha1, mode, NULL); } @@ -2288,6 +2297,13 @@ static void file_change_cr(struct branch *b, int rename) tree_content_get(&b->branch_tree, s, &leaf); if (!leaf.versions[1].mode) die("Path %s not in branch", s); + if (!*d) { /* C "path/to/subdir" "" */ + tree_content_replace(&b->branch_tree, + leaf.versions[1].sha1, + leaf.versions[1].mode, + leaf.tree); + return; + } tree_content_set(&b->branch_tree, d, leaf.versions[1].sha1, leaf.versions[1].mode, -- cgit v1.2.1