diff options
Diffstat (limited to 'unpack-trees.c')
-rw-r--r-- | unpack-trees.c | 214 |
1 files changed, 187 insertions, 27 deletions
diff --git a/unpack-trees.c b/unpack-trees.c index dd5999c35..0ddbef3e6 100644 --- a/unpack-trees.c +++ b/unpack-trees.c @@ -32,6 +32,12 @@ static struct unpack_trees_error_msgs unpack_plumbing_errors = { /* bind_overlap */ "Entry '%s' overlaps with '%s'. Cannot bind.", + + /* sparse_not_uptodate_file */ + "Entry '%s' not uptodate. Cannot update sparse checkout.", + + /* would_lose_orphaned */ + "Working tree file '%s' would be %s by sparse checkout update.", }; #define ERRORMSG(o,fld) \ @@ -61,8 +67,16 @@ static void unlink_entry(struct cache_entry *ce) { if (has_symlink_or_noent_leading_path(ce->name, ce_namelen(ce))) return; - if (unlink_or_warn(ce->name)) - return; + if (S_ISGITLINK(ce->ce_mode)) { + if (rmdir(ce->name)) { + warning("unable to rmdir %s: %s", + ce->name, strerror(errno)); + return; + } + } + else + if (unlink_or_warn(ce->name)) + return; schedule_dir_for_removal(ce->name, ce_namelen(ce)); } @@ -78,7 +92,7 @@ static int check_updates(struct unpack_trees_options *o) if (o->update && o->verbose_update) { for (total = cnt = 0; cnt < index->cache_nr; cnt++) { struct cache_entry *ce = index->cache[cnt]; - if (ce->ce_flags & (CE_UPDATE | CE_REMOVE)) + if (ce->ce_flags & (CE_UPDATE | CE_REMOVE | CE_WT_REMOVE)) total++; } @@ -92,6 +106,13 @@ static int check_updates(struct unpack_trees_options *o) for (i = 0; i < index->cache_nr; i++) { struct cache_entry *ce = index->cache[i]; + if (ce->ce_flags & CE_WT_REMOVE) { + display_progress(progress, ++cnt); + if (o->update) + unlink_entry(ce); + continue; + } + if (ce->ce_flags & CE_REMOVE) { display_progress(progress, ++cnt); if (o->update) @@ -118,6 +139,57 @@ static int check_updates(struct unpack_trees_options *o) return errs != 0; } +static int verify_uptodate_sparse(struct cache_entry *ce, struct unpack_trees_options *o); +static int verify_absent_sparse(struct cache_entry *ce, const char *action, struct unpack_trees_options *o); + +static int will_have_skip_worktree(const struct cache_entry *ce, struct unpack_trees_options *o) +{ + const char *basename; + + if (ce_stage(ce)) + return 0; + + basename = strrchr(ce->name, '/'); + basename = basename ? basename+1 : ce->name; + return excluded_from_list(ce->name, ce_namelen(ce), basename, NULL, o->el) <= 0; +} + +static int apply_sparse_checkout(struct cache_entry *ce, struct unpack_trees_options *o) +{ + int was_skip_worktree = ce_skip_worktree(ce); + + if (will_have_skip_worktree(ce, o)) + ce->ce_flags |= CE_SKIP_WORKTREE; + else + ce->ce_flags &= ~CE_SKIP_WORKTREE; + + /* + * We only care about files getting into the checkout area + * If merge strategies want to remove some, go ahead, this + * flag will be removed eventually in unpack_trees() if it's + * outside checkout area. + */ + if (ce->ce_flags & CE_REMOVE) + return 0; + + if (!was_skip_worktree && ce_skip_worktree(ce)) { + /* + * If CE_UPDATE is set, verify_uptodate() must be called already + * also stat info may have lost after merged_entry() so calling + * verify_uptodate() again may fail + */ + if (!(ce->ce_flags & CE_UPDATE) && verify_uptodate_sparse(ce, o)) + return -1; + ce->ce_flags |= CE_WT_REMOVE; + } + if (was_skip_worktree && !ce_skip_worktree(ce)) { + if (verify_absent_sparse(ce, "overwritten", o)) + return -1; + ce->ce_flags |= CE_UPDATE; + } + return 0; +} + static inline int call_unpack_fn(struct cache_entry **src, struct unpack_trees_options *o) { int ret = o->fn(src, o); @@ -369,8 +441,9 @@ static int unpack_callback(int n, unsigned long mask, unsigned long dirmask, str */ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options *o) { - int ret; + int i, ret; static struct cache_entry *dfc; + struct exclude_list el; if (len > MAX_UNPACK_TREES) die("unpack_trees takes at most %d trees", MAX_UNPACK_TREES); @@ -380,6 +453,16 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options state.quiet = 1; state.refresh_cache = 1; + memset(&el, 0, sizeof(el)); + if (!core_apply_sparse_checkout || !o->update) + o->skip_sparse_checkout = 1; + if (!o->skip_sparse_checkout) { + if (add_excludes_from_file_to_list(git_path("info/sparse-checkout"), "", 0, NULL, &el, 0) < 0) + o->skip_sparse_checkout = 1; + else + o->el = ⪙ + } + memset(&o->result, 0, sizeof(o->result)); o->result.initialized = 1; if (o->src_index) { @@ -400,26 +483,65 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options info.fn = unpack_callback; info.data = o; - if (traverse_trees(len, t, &info) < 0) - return unpack_failed(o, NULL); + if (traverse_trees(len, t, &info) < 0) { + ret = unpack_failed(o, NULL); + goto done; + } } /* Any left-over entries in the index? */ if (o->merge) { while (o->pos < o->src_index->cache_nr) { struct cache_entry *ce = o->src_index->cache[o->pos]; - if (unpack_index_entry(ce, o) < 0) - return unpack_failed(o, NULL); + if (unpack_index_entry(ce, o) < 0) { + ret = unpack_failed(o, NULL); + goto done; + } } } - if (o->trivial_merges_only && o->nontrivial_merge) - return unpack_failed(o, "Merge requires file-level merging"); + if (o->trivial_merges_only && o->nontrivial_merge) { + ret = unpack_failed(o, "Merge requires file-level merging"); + goto done; + } + + if (!o->skip_sparse_checkout) { + int empty_worktree = 1; + for (i = 0;i < o->result.cache_nr;i++) { + struct cache_entry *ce = o->result.cache[i]; + + if (apply_sparse_checkout(ce, o)) { + ret = -1; + goto done; + } + /* + * Merge strategies may set CE_UPDATE|CE_REMOVE outside checkout + * area as a result of ce_skip_worktree() shortcuts in + * verify_absent() and verify_uptodate(). Clear them. + */ + if (ce_skip_worktree(ce)) + ce->ce_flags &= ~(CE_UPDATE | CE_REMOVE); + else + empty_worktree = 0; + + } + if (o->result.cache_nr && empty_worktree) { + ret = unpack_failed(o, "Sparse checkout leaves no entry on working directory"); + goto done; + } + } o->src_index = NULL; ret = check_updates(o) ? (-2) : 0; if (o->dst_index) *o->dst_index = o->result; + +done: + for (i = 0;i < el.nr;i++) + free(el.excludes[i]); + if (el.excludes) + free(el.excludes); + return ret; } @@ -436,6 +558,8 @@ static int same(struct cache_entry *a, struct cache_entry *b) return 0; if (!a && !b) return 1; + if ((a->ce_flags | b->ce_flags) & CE_CONFLICTED) + return 0; return a->ce_mode == b->ce_mode && !hashcmp(a->sha1, b->sha1); } @@ -445,16 +569,17 @@ 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 int verify_uptodate(struct cache_entry *ce, - struct unpack_trees_options *o) +static int verify_uptodate_1(struct cache_entry *ce, + struct unpack_trees_options *o, + const char *error_msg) { struct stat st; - if (o->index_only || o->reset || ce_uptodate(ce)) + if (o->index_only || (!ce_skip_worktree(ce) && (o->reset || ce_uptodate(ce)))) return 0; if (!lstat(ce->name, &st)) { - unsigned changed = ie_match_stat(o->src_index, ce, &st, CE_MATCH_IGNORE_VALID); + unsigned changed = ie_match_stat(o->src_index, ce, &st, CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE); if (!changed) return 0; /* @@ -471,7 +596,21 @@ static int verify_uptodate(struct cache_entry *ce, if (errno == ENOENT) return 0; return o->gently ? -1 : - error(ERRORMSG(o, not_uptodate_file), ce->name); + error(error_msg, ce->name); +} + +static int verify_uptodate(struct cache_entry *ce, + struct unpack_trees_options *o) +{ + if (!o->skip_sparse_checkout && will_have_skip_worktree(ce, o)) + return 0; + return verify_uptodate_1(ce, o, ERRORMSG(o, not_uptodate_file)); +} + +static int verify_uptodate_sparse(struct cache_entry *ce, + struct unpack_trees_options *o) +{ + return verify_uptodate_1(ce, o, ERRORMSG(o, sparse_not_uptodate_file)); } static void invalidate_ce_path(struct cache_entry *ce, struct unpack_trees_options *o) @@ -572,15 +711,16 @@ static int icase_exists(struct unpack_trees_options *o, struct cache_entry *dst, struct cache_entry *src; src = index_name_exists(o->src_index, dst->name, ce_namelen(dst), 1); - return src && !ie_match_stat(o->src_index, src, st, CE_MATCH_IGNORE_VALID); + return src && !ie_match_stat(o->src_index, src, st, CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE); } /* * We do not want to remove or overwrite a working tree file that * is not tracked, unless it is ignored. */ -static int verify_absent(struct cache_entry *ce, const char *action, - struct unpack_trees_options *o) +static int verify_absent_1(struct cache_entry *ce, const char *action, + struct unpack_trees_options *o, + const char *error_msg) { struct stat st; @@ -660,13 +800,30 @@ static int verify_absent(struct cache_entry *ce, const char *action, } return 0; } +static int verify_absent(struct cache_entry *ce, const char *action, + struct unpack_trees_options *o) +{ + if (!o->skip_sparse_checkout && will_have_skip_worktree(ce, o)) + return 0; + return verify_absent_1(ce, action, o, ERRORMSG(o, would_lose_untracked)); +} + +static int verify_absent_sparse(struct cache_entry *ce, const char *action, + struct unpack_trees_options *o) +{ + return verify_absent_1(ce, action, o, ERRORMSG(o, would_lose_orphaned)); +} static int merged_entry(struct cache_entry *merge, struct cache_entry *old, struct unpack_trees_options *o) { int update = CE_UPDATE; - if (old) { + if (!old) { + if (verify_absent(merge, "overwritten", o)) + return -1; + invalidate_ce_path(merge, o); + } else if (!(old->ce_flags & CE_CONFLICTED)) { /* * See if we can re-use the old CE directly? * That way we get the uptodate stat info. @@ -680,13 +837,16 @@ static int merged_entry(struct cache_entry *merge, struct cache_entry *old, } else { if (verify_uptodate(old, o)) return -1; + if (ce_skip_worktree(old)) + update |= CE_SKIP_WORKTREE; invalidate_ce_path(old, o); } - } - else { - if (verify_absent(merge, "overwritten", o)) - return -1; - invalidate_ce_path(merge, o); + } else { + /* + * Previously unmerged entry left as an existence + * marker by read_index_unmerged(); + */ + invalidate_ce_path(old, o); } add_entry(o, merge, update, CE_STAGEMASK); @@ -702,7 +862,7 @@ static int deleted_entry(struct cache_entry *ce, struct cache_entry *old, return -1; return 0; } - if (verify_uptodate(old, o)) + if (!(old->ce_flags & CE_CONFLICTED) && verify_uptodate(old, o)) return -1; add_entry(o, ce, CE_REMOVE, 0); invalidate_ce_path(ce, o); @@ -1004,10 +1164,10 @@ int oneway_merge(struct cache_entry **src, struct unpack_trees_options *o) if (old && same(old, a)) { int update = 0; - if (o->reset && !ce_uptodate(old)) { + if (o->reset && !ce_uptodate(old) && !ce_skip_worktree(old)) { struct stat st; if (lstat(old->name, &st) || - ie_match_stat(o->src_index, old, &st, CE_MATCH_IGNORE_VALID)) + ie_match_stat(o->src_index, old, &st, CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE)) update |= CE_UPDATE; } add_entry(o, old, update, 0); |