зеркало из https://github.com/microsoft/git.git
Allow callers of unpack_trees() to handle failure
Return an error from unpack_trees() instead of calling die(), and exit with an error in read-tree, builtin-commit, and diff-lib. merge-recursive already expected an error return from unpack_trees, so it doesn't need to be changed. The merge function can return negative to abort. This will be used in builtin-checkout -m. Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
This commit is contained in:
Daniel Barkalow
Junio C Hamano
Родитель
9cb76b8cdc
Коммит
203a2fe117
|
|
@ -200,7 +200,8 @@ static void create_base_index(void)
|
|||
die("failed to unpack HEAD tree object");
|
||||
parse_tree(tree);
|
||||
init_tree_desc(&t, tree->buffer, tree->size);
|
||||
unpack_trees(1, &t, &opts);
|
||||
if (unpack_trees(1, &t, &opts))
|
||||
exit(128); /* We've already reported the error, finish dying */
|
||||
}
|
||||
|
||||
static char *prepare_index(int argc, const char **argv, const char *prefix)
|
||||
|
|
|
|||
|
|
@ -268,7 +268,8 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
|
|||
parse_tree(tree);
|
||||
init_tree_desc(t+i, tree->buffer, tree->size);
|
||||
}
|
||||
unpack_trees(nr_trees, t, &opts);
|
||||
if (unpack_trees(nr_trees, t, &opts))
|
||||
return 128;
|
||||
|
||||
/*
|
||||
* When reading only one tree (either the most basic form,
|
||||
|
|
|
|||
|
|
@ -737,7 +737,8 @@ int run_diff_index(struct rev_info *revs, int cached)
|
|||
opts.unpack_data = revs;
|
||||
|
||||
init_tree_desc(&t, tree->buffer, tree->size);
|
||||
unpack_trees(1, &t, &opts);
|
||||
if (unpack_trees(1, &t, &opts))
|
||||
exit(128);
|
||||
|
||||
diffcore_std(&revs->diffopt);
|
||||
diff_flush(&revs->diffopt);
|
||||
|
|
@ -789,6 +790,7 @@ int do_diff_cache(const unsigned char *tree_sha1, struct diff_options *opt)
|
|||
opts.unpack_data = &revs;
|
||||
|
||||
init_tree_desc(&t, tree->buffer, tree->size);
|
||||
unpack_trees(1, &t, &opts);
|
||||
if (unpack_trees(1, &t, &opts))
|
||||
exit(128);
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -219,6 +219,8 @@ static int unpack_trees_rec(struct tree_entry_list **posns, int len,
|
|||
}
|
||||
#endif
|
||||
ret = o->fn(src, o, remove);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
#if DBRT_DEBUG > 1
|
||||
printf("Added %d entries\n", ret);
|
||||
|
|
@ -359,7 +361,7 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
|
|||
}
|
||||
|
||||
if (o->trivial_merges_only && o->nontrivial_merge)
|
||||
die("Merge requires file-level merging");
|
||||
return error("Merge requires file-level merging");
|
||||
|
||||
check_updates(active_cache, active_nr, o);
|
||||
return 0;
|
||||
|
|
@ -367,10 +369,10 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
|
|||
|
||||
/* Here come the merge functions */
|
||||
|
||||
static void reject_merge(struct cache_entry *ce)
|
||||
static int reject_merge(struct cache_entry *ce)
|
||||
{
|
||||
die("Entry '%s' would be overwritten by merge. Cannot merge.",
|
||||
ce->name);
|
||||
return error("Entry '%s' would be overwritten by merge. Cannot merge.",
|
||||
ce->name);
|
||||
}
|
||||
|
||||
static int same(struct cache_entry *a, struct cache_entry *b)
|
||||
|
|
@ -388,18 +390,18 @@ static int same(struct cache_entry *a, struct cache_entry *b)
|
|||
* When a CE gets turned into an unmerged entry, we
|
||||
* want it to be up-to-date
|
||||
*/
|
||||
static void verify_uptodate(struct cache_entry *ce,
|
||||
static int verify_uptodate(struct cache_entry *ce,
|
||||
struct unpack_trees_options *o)
|
||||
{
|
||||
struct stat st;
|
||||
|
||||
if (o->index_only || o->reset)
|
||||
return;
|
||||
return 0;
|
||||
|
||||
if (!lstat(ce->name, &st)) {
|
||||
unsigned changed = ce_match_stat(ce, &st, CE_MATCH_IGNORE_VALID);
|
||||
if (!changed)
|
||||
return;
|
||||
return 0;
|
||||
/*
|
||||
* NEEDSWORK: the current default policy is to allow
|
||||
* submodule to be out of sync wrt the supermodule
|
||||
|
|
@ -408,12 +410,12 @@ static void verify_uptodate(struct cache_entry *ce,
|
|||
* checked out.
|
||||
*/
|
||||
if (S_ISGITLINK(ce->ce_mode))
|
||||
return;
|
||||
return 0;
|
||||
errno = 0;
|
||||
}
|
||||
if (errno == ENOENT)
|
||||
return;
|
||||
die("Entry '%s' not uptodate. Cannot merge.", ce->name);
|
||||
return 0;
|
||||
return error("Entry '%s' not uptodate. Cannot merge.", ce->name);
|
||||
}
|
||||
|
||||
static void invalidate_ce_path(struct cache_entry *ce)
|
||||
|
|
@ -479,7 +481,8 @@ static int verify_clean_subdirectory(struct cache_entry *ce, const char *action,
|
|||
* ce->name is an entry in the subdirectory.
|
||||
*/
|
||||
if (!ce_stage(ce)) {
|
||||
verify_uptodate(ce, o);
|
||||
if (verify_uptodate(ce, o))
|
||||
return -1;
|
||||
ce->ce_flags |= CE_REMOVE;
|
||||
}
|
||||
cnt++;
|
||||
|
|
@ -498,8 +501,8 @@ static int verify_clean_subdirectory(struct cache_entry *ce, const char *action,
|
|||
d.exclude_per_dir = o->dir->exclude_per_dir;
|
||||
i = read_directory(&d, ce->name, pathbuf, namelen+1, NULL);
|
||||
if (i)
|
||||
die("Updating '%s' would lose untracked files in it",
|
||||
ce->name);
|
||||
return error("Updating '%s' would lose untracked files in it",
|
||||
ce->name);
|
||||
free(pathbuf);
|
||||
return cnt;
|
||||
}
|
||||
|
|
@ -508,16 +511,16 @@ static int verify_clean_subdirectory(struct cache_entry *ce, const char *action,
|
|||
* We do not want to remove or overwrite a working tree file that
|
||||
* is not tracked, unless it is ignored.
|
||||
*/
|
||||
static void verify_absent(struct cache_entry *ce, const char *action,
|
||||
struct unpack_trees_options *o)
|
||||
static int verify_absent(struct cache_entry *ce, const char *action,
|
||||
struct unpack_trees_options *o)
|
||||
{
|
||||
struct stat st;
|
||||
|
||||
if (o->index_only || o->reset || !o->update)
|
||||
return;
|
||||
return 0;
|
||||
|
||||
if (has_symlink_leading_path(ce->name, NULL))
|
||||
return;
|
||||
return 0;
|
||||
|
||||
if (!lstat(ce->name, &st)) {
|
||||
int cnt;
|
||||
|
|
@ -527,7 +530,7 @@ static void verify_absent(struct cache_entry *ce, const char *action,
|
|||
* ce->name is explicitly excluded, so it is Ok to
|
||||
* overwrite it.
|
||||
*/
|
||||
return;
|
||||
return 0;
|
||||
if (S_ISDIR(st.st_mode)) {
|
||||
/*
|
||||
* We are checking out path "foo" and
|
||||
|
|
@ -556,7 +559,7 @@ static void verify_absent(struct cache_entry *ce, const char *action,
|
|||
* deleted entries here.
|
||||
*/
|
||||
o->pos += cnt;
|
||||
return;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -568,12 +571,13 @@ static void verify_absent(struct cache_entry *ce, const char *action,
|
|||
if (0 <= cnt) {
|
||||
struct cache_entry *ce = active_cache[cnt];
|
||||
if (ce->ce_flags & CE_REMOVE)
|
||||
return;
|
||||
return 0;
|
||||
}
|
||||
|
||||
die("Untracked working tree file '%s' "
|
||||
"would be %s by merge.", ce->name, action);
|
||||
return error("Untracked working tree file '%s' "
|
||||
"would be %s by merge.", ce->name, action);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int merged_entry(struct cache_entry *merge, struct cache_entry *old,
|
||||
|
|
@ -591,12 +595,14 @@ static int merged_entry(struct cache_entry *merge, struct cache_entry *old,
|
|||
if (same(old, merge)) {
|
||||
memcpy(merge, old, offsetof(struct cache_entry, name));
|
||||
} else {
|
||||
verify_uptodate(old, o);
|
||||
if (verify_uptodate(old, o))
|
||||
return -1;
|
||||
invalidate_ce_path(old);
|
||||
}
|
||||
}
|
||||
else {
|
||||
verify_absent(merge, "overwritten", o);
|
||||
if (verify_absent(merge, "overwritten", o))
|
||||
return -1;
|
||||
invalidate_ce_path(merge);
|
||||
}
|
||||
|
||||
|
|
@ -608,10 +614,12 @@ static int merged_entry(struct cache_entry *merge, struct cache_entry *old,
|
|||
static int deleted_entry(struct cache_entry *ce, struct cache_entry *old,
|
||||
struct unpack_trees_options *o)
|
||||
{
|
||||
if (old)
|
||||
verify_uptodate(old, o);
|
||||
else
|
||||
verify_absent(ce, "removed", o);
|
||||
if (old) {
|
||||
if (verify_uptodate(old, o))
|
||||
return -1;
|
||||
} else
|
||||
if (verify_absent(ce, "removed", o))
|
||||
return -1;
|
||||
ce->ce_flags |= CE_REMOVE;
|
||||
add_cache_entry(ce, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE);
|
||||
invalidate_ce_path(ce);
|
||||
|
|
@ -699,7 +707,7 @@ int threeway_merge(struct cache_entry **stages,
|
|||
/* #14, #14ALT, #2ALT */
|
||||
if (remote && !df_conflict_head && head_match && !remote_match) {
|
||||
if (index && !same(index, remote) && !same(index, head))
|
||||
reject_merge(index);
|
||||
return reject_merge(index);
|
||||
return merged_entry(remote, index, o);
|
||||
}
|
||||
/*
|
||||
|
|
@ -707,7 +715,7 @@ int threeway_merge(struct cache_entry **stages,
|
|||
* make sure that it matches head.
|
||||
*/
|
||||
if (index && !same(index, head)) {
|
||||
reject_merge(index);
|
||||
return reject_merge(index);
|
||||
}
|
||||
|
||||
if (head) {
|
||||
|
|
@ -758,8 +766,10 @@ int threeway_merge(struct cache_entry **stages,
|
|||
remove_entry(remove);
|
||||
if (index)
|
||||
return deleted_entry(index, index, o);
|
||||
else if (ce && !head_deleted)
|
||||
verify_absent(ce, "removed", o);
|
||||
else if (ce && !head_deleted) {
|
||||
if (verify_absent(ce, "removed", o))
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
/*
|
||||
|
|
@ -775,7 +785,8 @@ int threeway_merge(struct cache_entry **stages,
|
|||
* conflict resolution files.
|
||||
*/
|
||||
if (index) {
|
||||
verify_uptodate(index, o);
|
||||
if (verify_uptodate(index, o))
|
||||
return -1;
|
||||
}
|
||||
|
||||
remove_entry(remove);
|
||||
|
|
@ -855,11 +866,11 @@ int twoway_merge(struct cache_entry **src,
|
|||
/* all other failures */
|
||||
remove_entry(remove);
|
||||
if (oldtree)
|
||||
reject_merge(oldtree);
|
||||
return reject_merge(oldtree);
|
||||
if (current)
|
||||
reject_merge(current);
|
||||
return reject_merge(current);
|
||||
if (newtree)
|
||||
reject_merge(newtree);
|
||||
return reject_merge(newtree);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
|
@ -886,7 +897,7 @@ int bind_merge(struct cache_entry **src,
|
|||
return error("Cannot do a bind merge of %d trees\n",
|
||||
o->merge_size);
|
||||
if (a && old)
|
||||
die("Entry '%s' overlaps. Cannot bind.", a->name);
|
||||
return error("Entry '%s' overlaps. Cannot bind.", a->name);
|
||||
if (!a)
|
||||
return keep_entry(old, o);
|
||||
else
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче