From: Stefan Beller <sbeller@google.com>
To: unlisted-recipients:; (no To-header on input)
Cc: git@vger.kernel.org, bmwill@google.com, gitster@pobox.com,
jrnieder@gmail.com, mogulguy10@gmail.com,
David.Turner@twosigma.com, Stefan Beller <sbeller@google.com>
Subject: [PATCH 13/16] submodule: teach unpack_trees() to update submodules
Date: Tue, 15 Nov 2016 15:06:48 -0800 [thread overview]
Message-ID: <20161115230651.23953-14-sbeller@google.com> (raw)
In-Reply-To: <20161115230651.23953-1-sbeller@google.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
---
entry.c | 7 +++--
unpack-trees.c | 97 ++++++++++++++++++++++++++++++++++++++++++++++++----------
unpack-trees.h | 1 +
3 files changed, 86 insertions(+), 19 deletions(-)
diff --git a/entry.c b/entry.c
index 2330b6e..dd829ec 100644
--- a/entry.c
+++ b/entry.c
@@ -270,7 +270,7 @@ int checkout_entry(struct cache_entry *ce,
if (!check_path(path.buf, path.len, &st, state->base_dir_len)) {
unsigned changed = ce_match_stat(ce, &st, CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE);
- if (!changed)
+ if (!changed && (!S_ISDIR(st.st_mode) || !S_ISGITLINK(ce->ce_mode)))
return 0;
if (!state->force) {
if (!state->quiet)
@@ -287,9 +287,10 @@ int checkout_entry(struct cache_entry *ce,
* just do the right thing)
*/
if (S_ISDIR(st.st_mode)) {
- /* If it is a gitlink, leave it alone! */
- if (S_ISGITLINK(ce->ce_mode))
+ if (S_ISGITLINK(ce->ce_mode)) {
+ schedule_submodule_for_update(ce, 1);
return 0;
+ }
if (!state->force)
return error("%s is a directory", path.buf);
remove_subtree(&path);
diff --git a/unpack-trees.c b/unpack-trees.c
index 576e1d5..c5c22ed 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -29,6 +29,9 @@ static const char *unpack_plumbing_errors[NB_UNPACK_TREES_ERROR_TYPES] = {
/* ERROR_NOT_UPTODATE_DIR */
"Updating '%s' would lose untracked files in it",
+ /* ERROR_NOT_UPTODATE_SUBMODULE */
+ "Updating submodule '%s' would lose modifications in it",
+
/* ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN */
"Untracked working tree file '%s' would be overwritten by merge.",
@@ -80,6 +83,8 @@ void setup_unpack_trees_porcelain(struct unpack_trees_options *opts,
msgs[ERROR_NOT_UPTODATE_DIR] =
_("Updating the following directories would lose untracked files in it:\n%s");
+ msgs[ERROR_NOT_UPTODATE_SUBMODULE] =
+ _("Updating the following submodules would lose modifications in it:\n%s");
if (!strcmp(cmd, "checkout"))
msg = advice_commit_before_merge
@@ -1315,19 +1320,18 @@ static int verify_uptodate_1(const struct cache_entry *ce,
return 0;
if (!lstat(ce->name, &st)) {
- int flags = CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE;
- unsigned changed = ie_match_stat(o->src_index, ce, &st, flags);
- if (!changed)
- return 0;
- /*
- * NEEDSWORK: the current default policy is to allow
- * submodule to be out of sync wrt the superproject
- * index. This needs to be tightened later for
- * submodules that are marked to be automatically
- * checked out.
- */
- if (S_ISGITLINK(ce->ce_mode))
- return 0;
+ if (!S_ISGITLINK(ce->ce_mode)) {
+ int flags = CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE;
+ unsigned changed = ie_match_stat(o->src_index, ce, &st, flags);
+ if (!changed)
+ return 0;
+ } else {
+ if (!submodule_is_interesting(ce->name, null_sha1))
+ return 0;
+ if (ce_stage(ce) ? is_submodule_checkout_safe(ce->name, &ce->oid)
+ : !is_submodule_modified(ce->name, 1))
+ return 0;
+ }
errno = 0;
}
if (errno == ENOENT)
@@ -1350,6 +1354,59 @@ static int verify_uptodate_sparse(const struct cache_entry *ce,
return verify_uptodate_1(ce, o, ERROR_SPARSE_NOT_UPTODATE_FILE);
}
+/*
+ * When a submodule gets turned into an unmerged entry, we want it to be
+ * up-to-date regarding the merge changes.
+ */
+static int verify_uptodate_submodule(const struct cache_entry *old,
+ const struct cache_entry *new,
+ struct unpack_trees_options *o)
+{
+ struct stat st;
+
+ if (o->index_only
+ || (!((old->ce_flags & CE_VALID) || ce_skip_worktree(old))
+ && (o->reset || ce_uptodate(old))))
+ return 0;
+ if (!submodule_is_interesting(new->name, null_sha1))
+ return 0;
+ if (!lstat(old->name, &st)) {
+ unsigned changed = ie_match_stat(o->src_index, old, &st,
+ CE_MATCH_IGNORE_VALID|
+ CE_MATCH_IGNORE_SKIP_WORKTREE);
+ if (!changed) {
+ /* old is always a submodule */
+ if (S_ISGITLINK(new->ce_mode)) {
+ /*
+ * new is also a submodule, so check if we care
+ * and then if can checkout the new sha1 safely
+ */
+ if (submodule_is_interesting(old->name, null_sha1)
+ && is_submodule_checkout_safe(new->name, &new->oid))
+ return 0;
+ } else {
+ /*
+ * new is not a submodule any more, so only
+ * care if we care:
+ */
+ if (submodule_is_interesting(old->name, null_sha1)
+ && ok_to_remove_submodule(old->name))
+ return 0;
+ }
+ } else {
+ if (S_ISGITLINK(new->ce_mode))
+ return !is_submodule_checkout_safe(new->name, &new->oid);
+ else
+ return !ok_to_remove_submodule(old->name);
+ }
+ errno = 0;
+ }
+ if (errno == ENOENT)
+ return 0;
+ return o->gently ? -1 :
+ add_rejected_path(o, ERROR_NOT_UPTODATE_SUBMODULE, old->name);
+}
+
static void invalidate_ce_path(const struct cache_entry *ce,
struct unpack_trees_options *o)
{
@@ -1608,9 +1665,17 @@ static int merged_entry(const struct cache_entry *ce,
copy_cache_entry(merge, old);
update = 0;
} else {
- if (verify_uptodate(old, o)) {
- free(merge);
- return -1;
+ if (S_ISGITLINK(old->ce_mode) ||
+ S_ISGITLINK(merge->ce_mode)) {
+ if (verify_uptodate_submodule(old, merge, o)) {
+ free(merge);
+ return -1;
+ }
+ } else {
+ if (verify_uptodate(old, o)) {
+ free(merge);
+ return -1;
+ }
}
/* Migrate old flags over */
update |= old->ce_flags & (CE_SKIP_WORKTREE | CE_NEW_SKIP_WORKTREE);
diff --git a/unpack-trees.h b/unpack-trees.h
index 36a73a6..bee8740 100644
--- a/unpack-trees.h
+++ b/unpack-trees.h
@@ -15,6 +15,7 @@ enum unpack_trees_error_types {
ERROR_WOULD_OVERWRITE = 0,
ERROR_NOT_UPTODATE_FILE,
ERROR_NOT_UPTODATE_DIR,
+ ERROR_NOT_UPTODATE_SUBMODULE,
ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN,
ERROR_WOULD_LOSE_UNTRACKED_REMOVED,
ERROR_BIND_OVERLAP,
--
2.10.1.469.g00a8914
next prev parent reply other threads:[~2016-11-15 23:07 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-15 23:06 [RFC PATCH 00/16] Checkout aware of Submodules! Stefan Beller
2016-11-15 23:06 ` [PATCH 01/16] submodule.h: add extern keyword to functions, break line before 80 Stefan Beller
2016-11-16 19:08 ` Junio C Hamano
2016-11-17 18:29 ` Stefan Beller
2016-11-15 23:06 ` [PATCH 02/16] submodule: modernize ok_to_remove_submodule to use argv_array Stefan Beller
2016-11-15 23:11 ` David Turner
2016-11-16 19:03 ` Junio C Hamano
2016-11-17 18:36 ` Stefan Beller
2016-11-15 23:06 ` [PATCH 03/16] submodule: use absolute path for computing relative path connecting Stefan Beller
2016-11-15 23:06 ` [PATCH 04/16] update submodules: add is_submodule_populated Stefan Beller
2016-11-15 23:20 ` Brandon Williams
2016-11-15 23:06 ` [PATCH 05/16] update submodules: add submodule config parsing Stefan Beller
2016-11-15 23:06 ` [PATCH 06/16] update submodules: add a config option to determine if submodules are updated Stefan Beller
2016-11-15 23:06 ` [PATCH 07/16] update submodules: introduce submodule_is_interesting Stefan Beller
2016-11-15 23:34 ` Brandon Williams
2016-11-16 0:14 ` David Turner
2016-11-17 20:03 ` Stefan Beller
[not found] ` <20161117105715.GC39230@book.hvoigt.net>
2016-11-17 20:08 ` Stefan Beller
2016-11-15 23:06 ` [PATCH 08/16] update submodules: add depopulate_submodule Stefan Beller
2016-11-15 23:44 ` Brandon Williams
2016-11-17 22:23 ` Stefan Beller
2016-11-17 22:29 ` Brandon Williams
2016-11-17 22:42 ` Stefan Beller
2016-11-18 0:16 ` Stefan Beller
2016-11-18 17:46 ` Brandon Williams
2016-11-18 18:25 ` Stefan Beller
[not found] ` <20161117111337.GD39230@book.hvoigt.net>
2016-11-17 22:28 ` Stefan Beller
2016-11-15 23:06 ` [PATCH 09/16] update submodules: add scheduling to update submodules Stefan Beller
2016-11-16 0:02 ` Brandon Williams
2016-11-16 0:07 ` David Turner
2016-11-18 0:28 ` Stefan Beller
2016-11-15 23:06 ` [PATCH 10/16] update submodules: is_submodule_checkout_safe Stefan Beller
2016-11-16 0:06 ` Brandon Williams
2016-11-15 23:06 ` [PATCH 11/16] teach unpack_trees() to remove submodule contents Stefan Beller
2016-11-16 0:14 ` Brandon Williams
[not found] ` <20161117133538.GF39230@book.hvoigt.net>
2016-11-18 19:25 ` Stefan Beller
2016-11-15 23:06 ` [PATCH 12/16] entry: write_entry to write populate submodules Stefan Beller
2016-11-15 23:06 ` Stefan Beller [this message]
2016-11-16 0:22 ` [PATCH 13/16] submodule: teach unpack_trees() to update submodules David Turner
2016-11-18 23:33 ` Stefan Beller
2016-11-21 18:12 ` David Turner
2016-11-16 0:25 ` Brandon Williams
2016-11-18 23:39 ` Stefan Beller
2016-11-15 23:06 ` [PATCH 14/16] checkout: recurse into submodules if asked to Stefan Beller
2016-11-16 0:33 ` Brandon Williams
2016-11-16 17:03 ` David Turner
2016-11-16 17:05 ` David Turner
2016-11-15 23:06 ` [PATCH 15/16] completion: add '--recurse-submodules' to checkout Stefan Beller
2016-11-15 23:06 ` [PATCH 16/16] checkout: add config option to recurse into submodules by default Stefan Beller
2016-12-03 6:13 ` [RFC PATCH 00/16] Checkout aware of Submodules! Xiaodong Qi
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