diff options
Diffstat (limited to 'read-tree.c')
| -rw-r--r-- | read-tree.c | 70 |
1 files changed, 57 insertions, 13 deletions
diff --git a/read-tree.c b/read-tree.c index 49436bf96..99e7c7504 100644 --- a/read-tree.c +++ b/read-tree.c @@ -13,6 +13,7 @@ #include <sys/time.h> #include <signal.h> +static int reset = 0; static int merge = 0; static int update = 0; static int index_only = 0; @@ -408,7 +409,7 @@ static void verify_uptodate(struct cache_entry *ce) { struct stat st; - if (index_only) + if (index_only || reset) return; if (!lstat(ce->name, &st)) { @@ -417,6 +418,10 @@ static void verify_uptodate(struct cache_entry *ce) return; errno = 0; } + if (reset) { + ce->ce_flags |= htons(CE_UPDATE); + return; + } if (errno == ENOENT) return; die("Entry '%s' not uptodate. Cannot merge.", ce->name); @@ -428,6 +433,21 @@ static void invalidate_ce_path(struct cache_entry *ce) cache_tree_invalidate_path(active_cache_tree, ce->name); } +/* + * We do not want to remove or overwrite a working tree file that + * is not tracked. + */ +static void verify_absent(const char *path, const char *action) +{ + struct stat st; + + if (index_only || reset || !update) + return; + if (!lstat(path, &st)) + die("Untracked working tree file '%s' " + "would be %s by merge.", path, action); +} + static int merged_entry(struct cache_entry *merge, struct cache_entry *old) { merge->ce_flags |= htons(CE_UPDATE); @@ -446,8 +466,11 @@ static int merged_entry(struct cache_entry *merge, struct cache_entry *old) invalidate_ce_path(old); } } - else + else { + verify_absent(merge->name, "overwritten"); invalidate_ce_path(merge); + } + merge->ce_flags &= ~htons(CE_STAGEMASK); add_cache_entry(merge, ADD_CACHE_OK_TO_ADD); return 1; @@ -457,6 +480,8 @@ static int deleted_entry(struct cache_entry *ce, struct cache_entry *old) { if (old) verify_uptodate(old); + else + verify_absent(ce->name, "removed"); ce->ce_mode = 0; add_cache_entry(ce, ADD_CACHE_OK_TO_ADD); invalidate_ce_path(ce); @@ -493,6 +518,7 @@ static int threeway_merge(struct cache_entry **stages) int count; int head_match = 0; int remote_match = 0; + const char *path = NULL; int df_conflict_head = 0; int df_conflict_remote = 0; @@ -504,8 +530,11 @@ static int threeway_merge(struct cache_entry **stages) for (i = 1; i < head_idx; i++) { if (!stages[i]) any_anc_missing = 1; - else + else { + if (!path) + path = stages[i]->name; no_anc_exists = 0; + } } index = stages[0]; @@ -521,8 +550,15 @@ static int threeway_merge(struct cache_entry **stages) remote = NULL; } + if (!path && index) + path = index->name; + if (!path && head) + path = head->name; + if (!path && remote) + path = remote->name; + /* First, if there's a #16 situation, note that to prevent #13 - * and #14. + * and #14. */ if (!same(remote, head)) { for (i = 1; i < head_idx; i++) { @@ -581,6 +617,8 @@ static int threeway_merge(struct cache_entry **stages) (remote_deleted && head && head_match)) { if (index) return deleted_entry(index, index); + else if (path) + verify_absent(path, "removed"); return 0; } /* @@ -598,6 +636,8 @@ static int threeway_merge(struct cache_entry **stages) if (index) { verify_uptodate(index); } + else if (path) + verify_absent(path, "overwritten"); nontrivial_merge = 1; @@ -694,14 +734,18 @@ static int oneway_merge(struct cache_entry **src) return error("Cannot do a oneway merge of %d trees", merge_size); - if (!a) { - invalidate_ce_path(old); - return 0; - } + if (!a) + return deleted_entry(old, old); if (old && same(old, a)) { + if (reset) { + struct stat st; + if (lstat(old->name, &st) || + ce_match_stat(old, &st, 1)) + old->ce_flags |= htons(CE_UPDATE); + } return keep_entry(old); } - return merged_entry(a, NULL); + return merged_entry(a, old); } static int read_cache_unmerged(void) @@ -731,7 +775,7 @@ static void prime_cache_tree_rec(struct cache_tree *it, struct tree *tree) { struct tree_entry_list *ent; int cnt; - + memcpy(it->sha1, tree->object.sha1, 20); for (cnt = 0, ent = tree->entries; ent; ent = ent->next) { if (!ent->directory) @@ -766,7 +810,7 @@ static struct cache_file cache_file; int main(int argc, char **argv) { - int i, newfd, reset, stage = 0; + int i, newfd, stage = 0; unsigned char sha1[20]; merge_fn_t fn = NULL; @@ -841,8 +885,8 @@ int main(int argc, char **argv) if (1 < index_only + update) usage(read_tree_usage); - if (get_sha1(arg, sha1) < 0) - usage(read_tree_usage); + if (get_sha1(arg, sha1)) + die("Not a valid object name %s", arg); if (list_tree(sha1) < 0) die("failed to unpack tree object %s", arg); stage++; |