diff options
Diffstat (limited to 'merge-recursive.c')
| -rw-r--r-- | merge-recursive.c | 611 |
1 files changed, 358 insertions, 253 deletions
diff --git a/merge-recursive.c b/merge-recursive.c index 48fe7e7386..5200d5ccf8 100644 --- a/merge-recursive.c +++ b/merge-recursive.c @@ -23,6 +23,37 @@ #include "dir.h" #include "submodule.h" +static void flush_output(struct merge_options *o) +{ + if (o->buffer_output < 2 && o->obuf.len) { + fputs(o->obuf.buf, stdout); + strbuf_reset(&o->obuf); + } +} + +static int err(struct merge_options *o, const char *err, ...) +{ + va_list params; + + if (o->buffer_output < 2) + flush_output(o); + else { + strbuf_complete(&o->obuf, '\n'); + strbuf_addstr(&o->obuf, "error: "); + } + va_start(params, err); + strbuf_vaddf(&o->obuf, err, params); + va_end(params); + if (o->buffer_output > 1) + strbuf_addch(&o->obuf, '\n'); + else { + error("%s", o->obuf.buf); + strbuf_reset(&o->obuf); + } + + return -1; +} + static struct tree *shift_tree_object(struct tree *one, struct tree *two, const char *subtree_shift) { @@ -42,12 +73,9 @@ static struct tree *shift_tree_object(struct tree *one, struct tree *two, static struct commit *make_virtual_commit(struct tree *tree, const char *comment) { struct commit *commit = alloc_commit_node(); - struct merge_remote_desc *desc = xmalloc(sizeof(*desc)); - desc->name = comment; - desc->obj = (struct object *)commit; + set_merge_remote_desc(commit, comment, (struct object *)commit); commit->tree = tree; - commit->util = desc; commit->object.parsed = 1; return commit; } @@ -148,14 +176,6 @@ static int show(struct merge_options *o, int v) return (!o->call_depth && o->verbosity >= v) || o->verbosity >= 5; } -static void flush_output(struct merge_options *o) -{ - if (o->obuf.len) { - fputs(o->obuf.buf, stdout); - strbuf_reset(&o->obuf); - } -} - __attribute__((format (printf, 3, 4))) static void output(struct merge_options *o, int v, const char *fmt, ...) { @@ -177,37 +197,48 @@ static void output(struct merge_options *o, int v, const char *fmt, ...) static void output_commit_title(struct merge_options *o, struct commit *commit) { - int i; - flush_output(o); - for (i = o->call_depth; i--;) - fputs(" ", stdout); + strbuf_addchars(&o->obuf, ' ', o->call_depth * 2); if (commit->util) - printf("virtual %s\n", merge_remote_util(commit)->name); + strbuf_addf(&o->obuf, "virtual %s\n", + merge_remote_util(commit)->name); else { - printf("%s ", find_unique_abbrev(commit->object.oid.hash, DEFAULT_ABBREV)); + strbuf_addf(&o->obuf, "%s ", + find_unique_abbrev(commit->object.oid.hash, + DEFAULT_ABBREV)); if (parse_commit(commit) != 0) - printf(_("(bad commit)\n")); + strbuf_addstr(&o->obuf, _("(bad commit)\n")); else { const char *title; const char *msg = get_commit_buffer(commit, NULL); int len = find_commit_subject(msg, &title); if (len) - printf("%.*s\n", len, title); + strbuf_addf(&o->obuf, "%.*s\n", len, title); unuse_commit_buffer(commit, msg); } } + flush_output(o); } -static int add_cacheinfo(unsigned int mode, const struct object_id *oid, +static int add_cacheinfo(struct merge_options *o, + unsigned int mode, const struct object_id *oid, const char *path, int stage, int refresh, int options) { struct cache_entry *ce; - ce = make_cache_entry(mode, oid ? oid->hash : null_sha1, path, stage, - (refresh ? (CE_MATCH_REFRESH | - CE_MATCH_IGNORE_MISSING) : 0 )); + int ret; + + ce = make_cache_entry(mode, oid ? oid->hash : null_sha1, path, stage, 0); if (!ce) - return error(_("addinfo_cache failed for path '%s'"), path); - return add_cache_entry(ce, options); + return err(o, _("addinfo_cache failed for path '%s'"), path); + + ret = add_cache_entry(ce, options); + if (refresh) { + struct cache_entry *nce; + + nce = refresh_cache_entry(ce, CE_MATCH_REFRESH | CE_MATCH_IGNORE_MISSING); + if (nce != ce) + ret = add_cache_entry(nce, options); + } + return ret; } static void init_tree_desc_from_tree(struct tree_desc *desc, struct tree *tree) @@ -259,15 +290,17 @@ struct tree *write_tree_from_memory(struct merge_options *o) fprintf(stderr, "BUG: %d %.*s\n", ce_stage(ce), (int)ce_namelen(ce), ce->name); } - die("Bug in merge-recursive.c"); + die("BUG: unmerged index entries in merge-recursive.c"); } if (!active_cache_tree) active_cache_tree = cache_tree(); if (!cache_tree_fully_valid(active_cache_tree) && - cache_tree_update(&the_index, 0) < 0) - die(_("error building trees")); + cache_tree_update(&the_index, 0) < 0) { + err(o, _("error building trees")); + return NULL; + } result = lookup_tree(active_cache_tree->sha1); @@ -349,7 +382,7 @@ static struct string_list *get_unmerged(void) } e = item->util; e->stages[ce_stage(ce)].mode = ce->ce_mode; - hashcpy(e->stages[ce_stage(ce)].oid.hash, ce->sha1); + oidcpy(&e->stages[ce_stage(ce)].oid, &ce->oid); } return unmerged; @@ -400,7 +433,7 @@ static void record_df_conflict_files(struct merge_options *o, * and the file need to be present, then the D/F file will be * reinstated with a new unique name at the time it is processed. */ - struct string_list df_sorted_entries; + struct string_list df_sorted_entries = STRING_LIST_INIT_NODUP; const char *last_file = NULL; int last_len = 0; int i; @@ -413,7 +446,6 @@ static void record_df_conflict_files(struct merge_options *o, return; /* Ensure D/F conflicts are adjacent in the entries list. */ - memset(&df_sorted_entries, 0, sizeof(struct string_list)); for (i = 0; i < entries->nr; i++) { struct string_list_item *next = &entries->items[i]; string_list_append(&df_sorted_entries, next->string)->util = @@ -533,7 +565,8 @@ static struct string_list *get_renames(struct merge_options *o, return renames; } -static int update_stages(const char *path, const struct diff_filespec *o, +static int update_stages(struct merge_options *opt, const char *path, + const struct diff_filespec *o, const struct diff_filespec *a, const struct diff_filespec *b) { @@ -552,13 +585,13 @@ static int update_stages(const char *path, const struct diff_filespec *o, if (remove_file_from_cache(path)) return -1; if (o) - if (add_cacheinfo(o->mode, &o->oid, path, 1, 0, options)) + if (add_cacheinfo(opt, o->mode, &o->oid, path, 1, 0, options)) return -1; if (a) - if (add_cacheinfo(a->mode, &a->oid, path, 2, 0, options)) + if (add_cacheinfo(opt, a->mode, &a->oid, path, 2, 0, options)) return -1; if (b) - if (add_cacheinfo(b->mode, &b->oid, path, 3, 0, options)) + if (add_cacheinfo(opt, b->mode, &b->oid, path, 3, 0, options)) return -1; return 0; } @@ -658,23 +691,21 @@ static int was_tracked(const char *path) { int pos = cache_name_pos(path, strlen(path)); - if (pos < 0) - pos = -1 - pos; - while (pos < active_nr && - !strcmp(path, active_cache[pos]->name)) { - /* - * If stage #0, it is definitely tracked. - * If it has stage #2 then it was tracked - * before this merge started. All other - * cases the path was not tracked. - */ - switch (ce_stage(active_cache[pos])) { - case 0: - case 2: + if (0 <= pos) + /* we have been tracking this path */ + return 1; + + /* + * Look for an unmerged entry for the path, + * specifically stage #2, which would indicate + * that "our" side before the merge started + * had the path tracked (and resulted in a conflict). + */ + for (pos = -1 - pos; + pos < active_nr && !strcmp(path, active_cache[pos]->name); + pos++) + if (ce_stage(active_cache[pos]) == 2) return 1; - } - pos++; - } return 0; } @@ -709,12 +740,10 @@ static int make_room_for_path(struct merge_options *o, const char *path) /* Make sure leading directories are created */ status = safe_create_leading_directories_const(path); if (status) { - if (status == SCLD_EXISTS) { + if (status == SCLD_EXISTS) /* something else exists */ - error(msg, path, _(": perhaps a D/F conflict?")); - return -1; - } - die(msg, path, ""); + return err(o, msg, path, _(": perhaps a D/F conflict?")); + return err(o, msg, path, ""); } /* @@ -722,7 +751,7 @@ static int make_room_for_path(struct merge_options *o, const char *path) * tracking it. */ if (would_lose_untracked(path)) - return error(_("refusing to lose untracked file at '%s'"), + return err(o, _("refusing to lose untracked file at '%s'"), path); /* Successful unlink is good.. */ @@ -732,16 +761,18 @@ static int make_room_for_path(struct merge_options *o, const char *path) if (errno == ENOENT) return 0; /* .. but not some other error (who really cares what?) */ - return error(msg, path, _(": perhaps a D/F conflict?")); + return err(o, msg, path, _(": perhaps a D/F conflict?")); } -static void update_file_flags(struct merge_options *o, - const struct object_id *oid, - unsigned mode, - const char *path, - int update_cache, - int update_wd) +static int update_file_flags(struct merge_options *o, + const struct object_id *oid, + unsigned mode, + const char *path, + int update_cache, + int update_wd) { + int ret = 0; + if (o->call_depth) update_wd = 0; @@ -762,9 +793,11 @@ static void update_file_flags(struct merge_options *o, buf = read_sha1_file(oid->hash, &type, &size); if (!buf) - die(_("cannot read object %s '%s'"), oid_to_hex(oid), path); - if (type != OBJ_BLOB) - die(_("blob expected for %s '%s'"), oid_to_hex(oid), path); + return err(o, _("cannot read object %s '%s'"), oid_to_hex(oid), path); + if (type != OBJ_BLOB) { + ret = err(o, _("blob expected for %s '%s'"), oid_to_hex(oid), path); + goto free_buf; + } if (S_ISREG(mode)) { struct strbuf strbuf = STRBUF_INIT; if (convert_to_working_tree(path, buf, size, &strbuf)) { @@ -776,8 +809,7 @@ static void update_file_flags(struct merge_options *o, if (make_room_for_path(o, path) < 0) { update_wd = 0; - free(buf); - goto update_index; + goto free_buf; } if (S_ISREG(mode) || (!has_symlinks && S_ISLNK(mode))) { int fd; @@ -786,8 +818,11 @@ static void update_file_flags(struct merge_options *o, else mode = 0666; fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode); - if (fd < 0) - die_errno(_("failed to open '%s'"), path); + if (fd < 0) { + ret = err(o, _("failed to open '%s': %s"), + path, strerror(errno)); + goto free_buf; + } write_in_full(fd, buf, size); close(fd); } else if (S_ISLNK(mode)) { @@ -795,25 +830,29 @@ static void update_file_flags(struct merge_options *o, safe_create_leading_directories_const(path); unlink(path); if (symlink(lnk, path)) - die_errno(_("failed to symlink '%s'"), path); + ret = err(o, _("failed to symlink '%s': %s"), + path, strerror(errno)); free(lnk); } else - die(_("do not know what to do with %06o %s '%s'"), - mode, oid_to_hex(oid), path); + ret = err(o, + _("do not know what to do with %06o %s '%s'"), + mode, oid_to_hex(oid), path); + free_buf: free(buf); } update_index: - if (update_cache) - add_cacheinfo(mode, oid, path, 0, update_wd, ADD_CACHE_OK_TO_ADD); + if (!ret && update_cache) + add_cacheinfo(o, mode, oid, path, 0, update_wd, ADD_CACHE_OK_TO_ADD); + return ret; } -static void update_file(struct merge_options *o, - int clean, - const struct object_id *oid, - unsigned mode, - const char *path) +static int update_file(struct merge_options *o, + int clean, + const struct object_id *oid, + unsigned mode, + const char *path) { - update_file_flags(o, oid, mode, path, o->call_depth || clean, !o->call_depth); + return update_file_flags(o, oid, mode, path, o->call_depth || clean, !o->call_depth); } /* Low level file merging, update and removal */ @@ -871,9 +910,9 @@ static int merge_3way(struct merge_options *o, name2 = mkpathdup("%s", branch2); } - read_mmblob(&orig, one->oid.hash); - read_mmblob(&src1, a->oid.hash); - read_mmblob(&src2, b->oid.hash); + read_mmblob(&orig, &one->oid); + read_mmblob(&src1, &a->oid); + read_mmblob(&src2, &b->oid); merge_status = ll_merge(result_buf, a->path, &orig, base_name, &src1, name1, &src2, name2, &ll_opts); @@ -887,117 +926,120 @@ static int merge_3way(struct merge_options *o, return merge_status; } -static struct merge_file_info merge_file_1(struct merge_options *o, +static int merge_file_1(struct merge_options *o, const struct diff_filespec *one, const struct diff_filespec *a, const struct diff_filespec *b, const char *branch1, - const char *branch2) + const char *branch2, + struct merge_file_info *result) { - struct merge_file_info result; - result.merge = 0; - result.clean = 1; + result->merge = 0; + result->clean = 1; if ((S_IFMT & a->mode) != (S_IFMT & b->mode)) { - result.clean = 0; + result->clean = 0; if (S_ISREG(a->mode)) { - result.mode = a->mode; - oidcpy(&result.oid, &a->oid); + result->mode = a->mode; + oidcpy(&result->oid, &a->oid); } else { - result.mode = b->mode; - oidcpy(&result.oid, &b->oid); + result->mode = b->mode; + oidcpy(&result->oid, &b->oid); } } else { if (!oid_eq(&a->oid, &one->oid) && !oid_eq(&b->oid, &one->oid)) - result.merge = 1; + result->merge = 1; /* * Merge modes */ if (a->mode == b->mode || a->mode == one->mode) - result.mode = b->mode; + result->mode = b->mode; else { - result.mode = a->mode; + result->mode = a->mode; if (b->mode != one->mode) { - result.clean = 0; - result.merge = 1; + result->clean = 0; + result->merge = 1; } } if (oid_eq(&a->oid, &b->oid) || oid_eq(&a->oid, &one->oid)) - oidcpy(&result.oid, &b->oid); + oidcpy(&result->oid, &b->oid); else if (oid_eq(&b->oid, &one->oid)) - oidcpy(&result.oid, &a->oid); + oidcpy(&result->oid, &a->oid); else if (S_ISREG(a->mode)) { mmbuffer_t result_buf; - int merge_status; + int ret = 0, merge_status; merge_status = merge_3way(o, &result_buf, one, a, b, branch1, branch2); if ((merge_status < 0) || !result_buf.ptr) - die(_("Failed to execute internal merge")); + ret = err(o, _("Failed to execute internal merge")); - if (write_sha1_file(result_buf.ptr, result_buf.size, - blob_type, result.oid.hash)) - die(_("Unable to add %s to database"), - a->path); + if (!ret && write_sha1_file(result_buf.ptr, result_buf.size, + blob_type, result->oid.hash)) + ret = err(o, _("Unable to add %s to database"), + a->path); free(result_buf.ptr); - result.clean = (merge_status == 0); + if (ret) + return ret; + result->clean = (merge_status == 0); } else if (S_ISGITLINK(a->mode)) { - result.clean = merge_submodule(result.oid.hash, + result->clean = merge_submodule(result->oid.hash, one->path, one->oid.hash, a->oid.hash, b->oid.hash, !o->call_depth); } else if (S_ISLNK(a->mode)) { - oidcpy(&result.oid, &a->oid); + oidcpy(&result->oid, &a->oid); if (!oid_eq(&a->oid, &b->oid)) - result.clean = 0; - } else { - die(_("unsupported object type in the tree")); - } + result->clean = 0; + } else + die("BUG: unsupported object type in the tree"); } - return result; + return 0; } -static struct merge_file_info -merge_file_special_markers(struct merge_options *o, +static int merge_file_special_markers(struct merge_options *o, const struct diff_filespec *one, const struct diff_filespec *a, const struct diff_filespec *b, const char *branch1, const char *filename1, const char *branch2, - const char *filename2) + const char *filename2, + struct merge_file_info *mfi) { char *side1 = NULL; char *side2 = NULL; - struct merge_file_info mfi; + int ret; if (filename1) side1 = xstrfmt("%s:%s", branch1, filename1); if (filename2) side2 = xstrfmt("%s:%s", branch2, filename2); - mfi = merge_file_1(o, one, a, b, - side1 ? side1 : branch1, side2 ? side2 : branch2); + ret = merge_file_1(o, one, a, b, + side1 ? side1 : branch1, + side2 ? side2 : branch2, mfi); free(side1); free(side2); - return mfi; + return ret; } -static struct merge_file_info merge_file_one(struct merge_options *o, +static int merge_file_one(struct merge_options *o, const char *path, const struct object_id *o_oid, int o_mode, const struct object_id *a_oid, int a_mode, const struct object_id *b_oid, int b_mode, const char *branch1, - const char *branch2) + const char *branch2, + struct merge_file_info *mfi) { struct diff_filespec one, a, b; @@ -1008,10 +1050,10 @@ static struct merge_file_info merge_file_one(struct merge_options *o, a.mode = a_mode; oidcpy(&b.oid, b_oid); b.mode = b_mode; - return merge_file_1(o, &one, &a, &b, branch1, branch2); + return merge_file_1(o, &one, &a, &b, branch1, branch2, mfi); } -static void handle_change_delete(struct merge_options *o, +static int handle_change_delete(struct merge_options *o, const char *path, const struct object_id *o_oid, int o_mode, const struct object_id *a_oid, int a_mode, @@ -1019,6 +1061,7 @@ static void handle_change_delete(struct merge_options *o, const char *change, const char *change_past) { char *renamed = NULL; + int ret = 0; if (dir_in_way(path, !o->call_depth)) { renamed = unique_path(o, path, a_oid ? o->branch1 : o->branch2); } @@ -1029,21 +1072,23 @@ static void handle_change_delete(struct merge_options *o, * correct; since there is no true "middle point" between * them, simply reuse the base version for virtual merge base. */ - remove_file_from_cache(path); - update_file(o, 0, o_oid, o_mode, renamed ? renamed : path); + ret = remove_file_from_cache(path); + if (!ret) + ret = update_file(o, 0, o_oid, o_mode, + renamed ? renamed : path); } else if (!a_oid) { if (!renamed) { output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s " "and %s in %s. Version %s of %s left in tree."), change, path, o->branch1, change_past, o->branch2, o->branch2, path); - update_file(o, 0, b_oid, b_mode, path); + ret = update_file(o, 0, b_oid, b_mode, path); } else { output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s " "and %s in %s. Version %s of %s left in tree at %s."), change, path, o->branch1, change_past, o->branch2, o->branch2, path, renamed); - update_file(o, 0, b_oid, b_mode, renamed); + ret = update_file(o, 0, b_oid, b_mode, renamed); } } else { if (!renamed) { @@ -1056,7 +1101,7 @@ static void handle_change_delete(struct merge_options *o, "and %s in %s. Version %s of %s left in tree at %s."), change, path, o->branch2, change_past, o->branch1, o->branch1, path, renamed); - update_file(o, 0, a_oid, a_mode, renamed); + ret = update_file(o, 0, a_oid, a_mode, renamed); } /* * No need to call update_file() on path when !renamed, since @@ -1066,9 +1111,11 @@ static void handle_change_delete(struct merge_options *o, */ } free(renamed); + + return ret; } -static void conflict_rename_delete(struct merge_options *o, +static int conflict_rename_delete(struct merge_options *o, struct diff_filepair *pair, const char *rename_branch, const char *other_branch) @@ -1088,21 +1135,20 @@ static void conflict_rename_delete(struct merge_options *o, b_mode = dest->mode; } - handle_change_delete(o, - o->call_depth ? orig->path : dest->path, - &orig->oid, orig->mode, - a_oid, a_mode, - b_oid, b_mode, - _("rename"), _("renamed")); - - if (o->call_depth) { - remove_file_from_cache(dest->path); - } else { - update_stages(dest->path, NULL, - rename_branch == o->branch1 ? dest : NULL, - rename_branch == o->branch1 ? NULL : dest); - } + if (handle_change_delete(o, + o->call_depth ? orig->path : dest->path, + &orig->oid, orig->mode, + a_oid, a_mode, + b_oid, b_mode, + _("rename"), _("renamed"))) + return -1; + if (o->call_depth) + return remove_file_from_cache(dest->path); + else + return update_stages(o, dest->path, NULL, + rename_branch == o->branch1 ? dest : NULL, + rename_branch == o->branch1 ? NULL : dest); } static struct diff_filespec *filespec_from_entry(struct diff_filespec *target, @@ -1118,7 +1164,7 @@ static struct diff_filespec *filespec_from_entry(struct diff_filespec *target, return target; } -static void handle_file(struct merge_options *o, +static int handle_file(struct merge_options *o, struct diff_filespec *rename, int stage, struct rename_conflict_info *ci) @@ -1128,6 +1174,7 @@ static void handle_file(struct merge_options *o, const char *cur_branch, *other_branch; struct diff_filespec other; struct diff_filespec *add; + int ret; if (stage == 2) { dst_entry = ci->dst_entry1; @@ -1142,7 +1189,8 @@ static void handle_file(struct merge_options *o, add = filespec_from_entry(&other, dst_entry, stage ^ 1); if (add) { char *add_name = unique_path(o, rename->path, other_branch); - update_file(o, 0, &add->oid, add->mode, add_name); + if (update_file(o, 0, &add->oid, add->mode, add_name)) + return -1; remove_file(o, 0, rename->path, 0); dst_name = unique_path(o, rename->path, cur_branch); @@ -1153,17 +1201,20 @@ static void handle_file(struct merge_options *o, rename->path, other_branch, dst_name); } } - update_file(o, 0, &rename->oid, rename->mode, dst_name); - if (stage == 2) - update_stages(rename->path, NULL, rename, add); + if ((ret = update_file(o, 0, &rename->oid, rename->mode, dst_name))) + ; /* fall through, do allow dst_name to be released */ + else if (stage == 2) + ret = update_stages(o, rename->path, NULL, rename, add); else - update_stages(rename->path, NULL, add, rename); + ret = update_stages(o, rename->path, NULL, add, rename); if (dst_name != rename->path) free(dst_name); + + return ret; } -static void conflict_rename_rename_1to2(struct merge_options *o, +static int conflict_rename_rename_1to2(struct merge_options *o, struct rename_conflict_info *ci) { /* One file was renamed in both branches, but to different names. */ @@ -1181,18 +1232,21 @@ static void conflict_rename_rename_1to2(struct merge_options *o, struct merge_file_info mfi; struct diff_filespec other; struct diff_filespec *add; - mfi = merge_file_one(o, one->path, + if (merge_file_one(o, one->path, &one->oid, one->mode, &a->oid, a->mode, &b->oid, b->mode, - ci->branch1, ci->branch2); + ci->branch1, ci->branch2, &mfi)) + return -1; + /* * FIXME: For rename/add-source conflicts (if we could detect * such), this is wrong. We should instead find a unique * pathname and then either rename the add-source file to that * unique path, or use that unique path instead of src here. */ - update_file(o, 0, &mfi.oid, mfi.mode, one->path); + if (update_file(o, 0, &mfi.oid, mfi.mode, one->path)) + return -1; /* * Above, we put the merged content at the merge-base's @@ -1203,22 +1257,26 @@ static void conflict_rename_rename_1to2(struct merge_options *o, * resolving the conflict at that path in its favor. */ add = filespec_from_entry(&other, ci->dst_entry1, 2 ^ 1); - if (add) - update_file(o, 0, &add->oid, add->mode, a->path); + if (add) { + if (update_file(o, 0, &add->oid, add->mode, a->path)) + return -1; + } else remove_file_from_cache(a->path); add = filespec_from_entry(&other, ci->dst_entry2, 3 ^ 1); - if (add) - update_file(o, 0, &add->oid, add->mode, b->path); + if (add) { + if (update_file(o, 0, &add->oid, add->mode, b->path)) + return -1; + } else remove_file_from_cache(b->path); - } else { - handle_file(o, a, 2, ci); - handle_file(o, b, 3, ci); - } + } else if (handle_file(o, a, 2, ci) || handle_file(o, b, 3, ci)) + return -1; + + return 0; } -static void conflict_rename_rename_2to1(struct merge_options *o, +static int conflict_rename_rename_2to1(struct merge_options *o, struct rename_conflict_info *ci) { /* Two files, a & b, were renamed to the same thing, c. */ @@ -1229,6 +1287,7 @@ static void conflict_rename_rename_2to1(struct merge_options *o, char *path = c1->path; /* == c2->path */ struct merge_file_info mfi_c1; struct merge_file_info mfi_c2; + int ret; output(o, 1, _("CONFLICT (rename/rename): " "Rename %s->%s in %s. " @@ -1239,12 +1298,13 @@ static void conflict_rename_rename_2to1(struct merge_options *o, remove_file(o, 1, a->path, o->call_depth || would_lose_untracked(a->path)); remove_file(o, 1, b->path, o->call_depth || would_lose_untracked(b->path)); - mfi_c1 = merge_file_special_markers(o, a, c1, &ci->ren1_other, - o->branch1, c1->path, - o->branch2, ci->ren1_other.path); - mfi_c2 = merge_file_special_markers(o, b, &ci->ren2_other, c2, - o->branch1, ci->ren2_other.path, - o->branch2, c2->path); + if (merge_file_special_markers(o, a, c1, &ci->ren1_other, + o->branch1, c1->path, + o->branch2, ci->ren1_other.path, &mfi_c1) || + merge_file_special_markers(o, b, &ci->ren2_other, c2, + o->branch1, ci->ren2_other.path, + o->branch2, c2->path, &mfi_c2)) + return -1; if (o->call_depth) { /* @@ -1255,19 +1315,25 @@ static void conflict_rename_rename_2to1(struct merge_options *o, * again later for the non-recursive merge. */ remove_file(o, 0, path, 0); - update_file(o, 0, &mfi_c1.oid, mfi_c1.mode, a->path); - update_file(o, 0, &mfi_c2.oid, mfi_c2.mode, b->path); + ret = update_file(o, 0, &mfi_c1.oid, mfi_c1.mode, a->path); + if (!ret) + ret = update_file(o, 0, &mfi_c2.oid, mfi_c2.mode, + b->path); } else { char *new_path1 = unique_path(o, path, ci->branch1); char *new_path2 = unique_path(o, path, ci->branch2); output(o, 1, _("Renaming %s to %s and %s to %s instead"), a->path, new_path1, b->path, new_path2); remove_file(o, 0, path, 0); - update_file(o, 0, &mfi_c1.oid, mfi_c1.mode, new_path1); - update_file(o, 0, &mfi_c2.oid, mfi_c2.mode, new_path2); + ret = update_file(o, 0, &mfi_c1.oid, mfi_c1.mode, new_path1); + if (!ret) + ret = update_file(o, 0, &mfi_c2.oid, mfi_c2.mode, + new_path2); free(new_path2); free(new_path1); } + + return ret; } static int process_renames(struct merge_options *o, @@ -1345,7 +1411,7 @@ static int process_renames(struct merge_options *o, const char *ren2_dst = ren2->pair->two->path; enum rename_type rename_type; if (strcmp(ren1_src, ren2_src) != 0) - die("ren1_src != ren2_src"); + die("BUG: ren1_src != ren2_src"); ren2->dst_entry->processed = 1; ren2->processed = 1; if (strcmp(ren1_dst, ren2_dst) != 0) { @@ -1379,7 +1445,7 @@ static int process_renames(struct merge_options *o, ren2 = lookup->util; ren2_dst = ren2->pair->two->path; if (strcmp(ren1_dst, ren2_dst) != 0) - die("ren1_dst != ren2_dst"); + die("BUG: ren1_dst != ren2_dst"); clean_merge = 0; ren2->processed = 1; @@ -1452,12 +1518,13 @@ static int process_renames(struct merge_options *o, * update_file_flags() instead of * update_file(). */ - update_file_flags(o, - &ren1->pair->two->oid, - ren1->pair->two->mode, - ren1_dst, - 1, /* update_cache */ - 0 /* update_wd */); + if (update_file_flags(o, + &ren1->pair->two->oid, + ren1->pair->two->mode, + ren1_dst, + 1, /* update_cache */ + 0 /* update_wd */)) + clean_merge = -1; } else if (!oid_eq(&dst_other.oid, &null_oid)) { clean_merge = 0; try_merge = 1; @@ -1467,26 +1534,33 @@ static int process_renames(struct merge_options *o, ren1_dst, branch2); if (o->call_depth) { struct merge_file_info mfi; - mfi = merge_file_one(o, ren1_dst, &null_oid, 0, - &ren1->pair->two->oid, - ren1->pair->two->mode, - &dst_other.oid, - dst_other.mode, - branch1, branch2); + if (merge_file_one(o, ren1_dst, &null_oid, 0, + &ren1->pair->two->oid, + ren1->pair->two->mode, + &dst_other.oid, + dst_other.mode, + branch1, branch2, &mfi)) { + clean_merge = -1; + goto cleanup_and_return; + } output(o, 1, _("Adding merged %s"), ren1_dst); - update_file(o, 0, &mfi.oid, - mfi.mode, ren1_dst); + if (update_file(o, 0, &mfi.oid, + mfi.mode, ren1_dst)) + clean_merge = -1; try_merge = 0; } else { char *new_path = unique_path(o, ren1_dst, branch2); output(o, 1, _("Adding as %s instead"), new_path); - update_file(o, 0, &dst_other.oid, - dst_other.mode, new_path); + if (update_file(o, 0, &dst_other.oid, + dst_other.mode, new_path)) + clean_merge = -1; free(new_path); } } else try_merge = 1; + if (clean_merge < 0) + goto cleanup_and_return; if (try_merge) { struct diff_filespec *one, *a, *b; src_other.path = (char *)ren1_src; @@ -1513,6 +1587,7 @@ static int process_renames(struct merge_options *o, } } } +cleanup_and_return: string_list_clear(&a_by_dst, 0); string_list_clear(&b_by_dst, 0); @@ -1524,23 +1599,25 @@ static struct object_id *stage_oid(const struct object_id *oid, unsigned mode) return (is_null_oid(oid) || mode == 0) ? NULL: (struct object_id *)oid; } -static int read_oid_strbuf(const struct object_id *oid, struct strbuf *dst) +static int read_oid_strbuf(struct merge_options *o, + const struct object_id *oid, struct strbuf *dst) { void *buf; enum object_type type; unsigned long size; buf = read_sha1_file(oid->hash, &type, &size); if (!buf) - return error(_("cannot read object %s"), oid_to_hex(oid)); + return err(o, _("cannot read object %s"), oid_to_hex(oid)); if (type != OBJ_BLOB) { free(buf); - return error(_("object %s is not a blob"), oid_to_hex(oid)); + return err(o, _("object %s is not a blob"), oid_to_hex(oid)); } strbuf_attach(dst, buf, size, size + 1); return 0; } -static int blob_unchanged(const struct object_id *o_oid, +static int blob_unchanged(struct merge_options *opt, + const struct object_id *o_oid, unsigned o_mode, const struct object_id *a_oid, unsigned a_mode, @@ -1558,7 +1635,7 @@ static int blob_unchanged(const struct object_id *o_oid, return 0; assert(o_oid && a_oid); - if (read_oid_strbuf(o_oid, &o) || read_oid_strbuf(a_oid, &a)) + if (read_oid_strbuf(opt, o_oid, &o) || read_oid_strbuf(opt, a_oid, &a)) goto error_return; /* * Note: binary | is used so that both renormalizations are @@ -1575,18 +1652,18 @@ error_return: return ret; } -static void handle_modify_delete(struct merge_options *o, +static int handle_modify_delete(struct merge_options *o, const char *path, struct object_id *o_oid, int o_mode, struct object_id *a_oid, int a_mode, struct object_id *b_oid, int b_mode) { - handle_change_delete(o, - path, - o_oid, o_mode, - a_oid, a_mode, - b_oid, b_mode, - _("modify"), _("modified")); + return handle_change_delete(o, + path, + o_oid, o_mode, + a_oid, a_mode, + b_oid, b_mode, + _("modify"), _("modified")); } static int merge_content(struct merge_options *o, @@ -1630,9 +1707,10 @@ static int merge_content(struct merge_options *o, if (dir_in_way(path, !o->call_depth)) df_conflict_remains = 1; } - mfi = merge_file_special_markers(o, &one, &a, &b, - o->branch1, path1, - o->branch2, path2); + if (merge_file_special_markers(o, &one, &a, &b, + o->branch1, path1, + o->branch2, path2, &mfi)) + return -1; if (mfi.clean && !df_conflict_remains && oid_eq(&mfi.oid, a_oid) && mfi.mode == a_mode) { @@ -1646,7 +1724,7 @@ static int merge_content(struct merge_options *o, */ path_renamed_outside_HEAD = !path2 || !strcmp(path, path2); if (!path_renamed_outside_HEAD) { - add_cacheinfo(mfi.mode, &mfi.oid, path, + add_cacheinfo(o, mfi.mode, &mfi.oid, path, 0, (!o->call_depth), 0); return mfi.clean; } @@ -1659,7 +1737,8 @@ static int merge_content(struct merge_options *o, output(o, 1, _("CONFLICT (%s): Merge conflict in %s"), reason, path); if (rename_conflict_info && !df_conflict_remains) - update_stages(path, &one, &a, &b); + if (update_stages(o, path, &one, &a, &b)) + return -1; } if (df_conflict_remains) { @@ -1667,30 +1746,33 @@ static int merge_content(struct merge_options *o, if (o->call_depth) { remove_file_from_cache(path); } else { - if (!mfi.clean) - update_stages(path, &one, &a, &b); - else { + if (!mfi.clean) { + if (update_stages(o, path, &one, &a, &b)) + return -1; + } else { int file_from_stage2 = was_tracked(path); struct diff_filespec merged; oidcpy(&merged.oid, &mfi.oid); merged.mode = mfi.mode; - update_stages(path, NULL, - file_from_stage2 ? &merged : NULL, - file_from_stage2 ? NULL : &merged); + if (update_stages(o, path, NULL, + file_from_stage2 ? &merged : NULL, + file_from_stage2 ? NULL : &merged)) + return -1; } } new_path = unique_path(o, path, rename_conflict_info->branch1); output(o, 1, _("Adding as %s instead"), new_path); - update_file(o, 0, &mfi.oid, mfi.mode, new_path); + if (update_file(o, 0, &mfi.oid, mfi.mode, new_path)) { + free(new_path); + return -1; + } free(new_path); mfi.clean = 0; - } else { - update_file(o, mfi.clean, &mfi.oid, mfi.mode, path); - } + } else if (update_file(o, mfi.clean, &mfi.oid, mfi.mode, path)) + return -1; return mfi.clean; - } /* Per entry merge function */ @@ -1718,17 +1800,21 @@ static int process_entry(struct merge_options *o, break; case RENAME_DELETE: clean_merge = 0; - conflict_rename_delete(o, conflict_info->pair1, - conflict_info->branch1, - conflict_info->branch2); + if (conflict_rename_delete(o, + conflict_info->pair1, + conflict_info->branch1, + conflict_info->branch2)) + clean_merge = -1; break; case RENAME_ONE_FILE_TO_TWO: clean_merge = 0; - conflict_rename_rename_1to2(o, conflict_info); + if (conflict_rename_rename_1to2(o, conflict_info)) + clean_merge = -1; break; case RENAME_TWO_FILES_TO_ONE: clean_merge = 0; - conflict_rename_rename_2to1(o, conflict_info); + if (conflict_rename_rename_2to1(o, conflict_info)) + clean_merge = -1; break; default: entry->processed = 0; @@ -1737,8 +1823,8 @@ static int process_entry(struct merge_options *o, } else if (o_oid && (!a_oid || !b_oid)) { /* Case A: Deleted in one */ if ((!a_oid && !b_oid) || - (!b_oid && blob_unchanged(o_oid, o_mode, a_oid, a_mode, normalize, path)) || - (!a_oid && blob_unchanged(o_oid, o_mode, b_oid, b_mode, normalize, path))) { + (!b_oid && blob_unchanged(o, o_oid, o_mode, a_oid, a_mode, normalize, path)) || + (!a_oid && blob_unchanged(o, o_oid, o_mode, b_oid, b_mode, normalize, path))) { /* Deleted in both or deleted in one and * unchanged in the other */ if (a_oid) @@ -1748,8 +1834,9 @@ static int process_entry(struct merge_options *o, } else { /* Modify/delete; deleted side may have put a directory in the way */ clean_merge = 0; - handle_modify_delete(o, path, o_oid, o_mode, - a_oid, a_mode, b_oid, b_mode); + if (handle_modify_delete(o, path, o_oid, o_mode, + a_oid, a_mode, b_oid, b_mode)) + clean_merge = -1; } } else if ((!o_oid && a_oid && !b_oid) || (!o_oid && !a_oid && b_oid)) { @@ -1781,14 +1868,16 @@ static int process_entry(struct merge_options *o, output(o, 1, _("CONFLICT (%s): There is a directory with name %s in %s. " "Adding %s as %s"), conf, path, other_branch, path, new_path); - update_file(o, 0, oid, mode, new_path); - if (o->call_depth) + if (update_file(o, 0, oid, mode, new_path)) + clean_merge = -1; + else if (o->call_depth) remove_file_from_cache(path); free(new_path); } else { output(o, 2, _("Adding %s"), path); /* do not overwrite file if already present */ - update_file_flags(o, oid, mode, path, 1, !a_oid); + if (update_file_flags(o, oid, mode, path, 1, !a_oid)) + clean_merge = -1; } } else if (a_oid && b_oid) { /* Case C: Added in both (check for same permissions) and */ @@ -1803,7 +1892,7 @@ static int process_entry(struct merge_options *o, */ remove_file(o, 1, path, !a_mode); } else - die(_("Fatal merge failure, shouldn't happen.")); + die("BUG: fatal merge failure, shouldn't happen."); return clean_merge; } @@ -1831,11 +1920,10 @@ int merge_trees(struct merge_options *o, if (code != 0) { if (show(o, 4) || o->call_depth) - die(_("merging of trees %s and %s failed"), + err(o, _("merging of trees %s and %s failed"), oid_to_hex(&head->object.oid), oid_to_hex(&merge->object.oid)); - else - exit(128); + return -1; } if (unmerged_cache()) { @@ -1851,17 +1939,23 @@ int merge_trees(struct merge_options *o, re_head = get_renames(o, head, common, head, merge, entries); re_merge = get_renames(o, merge, common, head, merge, entries); clean = process_renames(o, re_head, re_merge); + if (clean < 0) + return clean; for (i = entries->nr-1; 0 <= i; i--) { const char *path = entries->items[i].string; struct stage_data *e = entries->items[i].util; - if (!e->processed - && !process_entry(o, path, e)) - clean = 0; + if (!e->processed) { + int ret = process_entry(o, path, e); + if (!ret) + clean = 0; + else if (ret < 0) + return ret; + } } for (i = 0; i < entries->nr; i++) { struct stage_data *e = entries->items[i].util; if (!e->processed) - die(_("Unprocessed path??? %s"), + die("BUG: unprocessed path??? %s", entries->items[i].string); } @@ -1876,8 +1970,8 @@ int merge_trees(struct merge_options *o, else clean = 1; - if (o->call_depth) - *result = write_tree_from_memory(o); + if (o->call_depth && !(*result = write_tree_from_memory(o))) + return -1; return clean; } @@ -1943,23 +2037,25 @@ int merge_recursive(struct merge_options *o, /* * When the merge fails, the result contains files * with conflict markers. The cleanness flag is - * ignored, it was never actually used, as result of - * merge_trees has always overwritten it: the committed - * "conflicts" were already resolved. + * ignored (unless indicating an error), it was never + * actually used, as result of merge_trees has always + * overwritten it: the committed "conflicts" were + * already resolved. */ discard_cache(); saved_b1 = o->branch1; saved_b2 = o->branch2; o->branch1 = "Temporary merge branch 1"; o->branch2 = "Temporary merge branch 2"; - merge_recursive(o, merged_common_ancestors, iter->item, - NULL, &merged_common_ancestors); + if (merge_recursive(o, merged_common_ancestors, iter->item, + NULL, &merged_common_ancestors) < 0) + return -1; o->branch1 = saved_b1; o->branch2 = saved_b2; o->call_depth--; if (!merged_common_ancestors) - die(_("merge returned no commit")); + return err(o, _("merge returned no commit")); } discard_cache(); @@ -1969,6 +2065,10 @@ int merge_recursive(struct merge_options *o, o->ancestor = "merged common ancestors"; clean = merge_trees(o, h1->tree, h2->tree, merged_common_ancestors->tree, &mrtree); + if (clean < 0) { + flush_output(o); + return clean; + } if (o->call_depth) { *result = make_virtual_commit(mrtree, "merged tree"); @@ -1976,6 +2076,8 @@ int merge_recursive(struct merge_options *o, commit_list_insert(h2, &(*result)->parents->next); } flush_output(o); + if (!o->call_depth && o->buffer_output < 2) + strbuf_release(&o->obuf); if (show(o, 2)) diff_warn_rename_limit("merge.renamelimit", o->needed_rename_limit, 0); @@ -2016,7 +2118,7 @@ int merge_recursive_generic(struct merge_options *o, for (i = 0; i < num_base_list; ++i) { struct commit *base; if (!(base = get_ref(base_list[i], oid_to_hex(base_list[i])))) - return error(_("Could not parse object '%s'"), + return err(o, _("Could not parse object '%s'"), oid_to_hex(base_list[i])); commit_list_insert(base, &ca); } @@ -2025,9 +2127,12 @@ int merge_recursive_generic(struct merge_options *o, hold_locked_index(lock, 1); clean = merge_recursive(o, head_commit, next_commit, ca, result); + if (clean < 0) + return clean; + if (active_cache_changed && write_locked_index(&the_index, lock, COMMIT_LOCK)) - return error(_("Unable to write index.")); + return err(o, _("Unable to write index.")); return clean ? 0 : 1; } |