Merge branch 'cc/untracked'
authorJunio C Hamano <gitster@pobox.com>
Tue, 11 Apr 2017 07:21:51 +0000 (00:21 -0700)
committerJunio C Hamano <gitster@pobox.com>
Tue, 11 Apr 2017 07:21:51 +0000 (00:21 -0700)
Code cleanup.

* cc/untracked:
update-index: fix xgetcwd() related memory leak

1  2 
builtin/update-index.c
diff --combined builtin/update-index.c
index d74d72cc7fad93980abd409d2c9dc10ae4652fd3,984fe37da1b2f7f95b5e3e9e0eef4f61d176fafc..ebfc09faa0d604218af8f5815af5e5fee5915158
@@@ -125,12 -125,16 +125,16 @@@ static int test_if_untracked_cache_is_s
        struct stat st;
        struct stat_data base;
        int fd, ret = 0;
+       char *cwd;
  
        strbuf_addstr(&mtime_dir, "mtime-test-XXXXXX");
        if (!mkdtemp(mtime_dir.buf))
                die_errno("Could not make temporary directory");
  
-       fprintf(stderr, _("Testing mtime in '%s' "), xgetcwd());
+       cwd = xgetcwd();
+       fprintf(stderr, _("Testing mtime in '%s' "), cwd);
+       free(cwd);
        atexit(remove_test_directory);
        xstat_mtime_dir(&st);
        fill_stat_data(&base, &st);
@@@ -255,7 -259,7 +259,7 @@@ static int process_lstat_error(const ch
  {
        if (err == ENOENT || err == ENOTDIR)
                return remove_one_path(path);
 -      return error("lstat(\"%s\"): %s", path, strerror(errno));
 +      return error("lstat(\"%s\"): %s", path, strerror(err));
  }
  
  static int add_one_path(const struct cache_entry *old, const char *path, int len, struct stat *st)
        fill_stat_cache_info(ce, st);
        ce->ce_mode = ce_mode_from_stat(old, st->st_mode);
  
 -      if (index_path(ce->sha1, path, st,
 +      if (index_path(ce->oid.hash, path, st,
                       info_only ? 0 : HASH_WRITE_OBJECT)) {
                free(ce);
                return -1;
   */
  static int process_directory(const char *path, int len, struct stat *st)
  {
 -      unsigned char sha1[20];
 +      struct object_id oid;
        int pos = cache_name_pos(path, len);
  
        /* Exact match: file or existing gitlink */
                if (S_ISGITLINK(ce->ce_mode)) {
  
                        /* Do nothing to the index if there is no HEAD! */
 -                      if (resolve_gitlink_ref(path, "HEAD", sha1) < 0)
 +                      if (resolve_gitlink_ref(path, "HEAD", oid.hash) < 0)
                                return 0;
  
                        return add_one_path(ce, path, len, st);
        }
  
        /* No match - should we add it as a gitlink? */
 -      if (!resolve_gitlink_ref(path, "HEAD", sha1))
 +      if (!resolve_gitlink_ref(path, "HEAD", oid.hash))
                return add_one_path(NULL, path, len, st);
  
        /* Error out. */
@@@ -390,7 -394,7 +394,7 @@@ static int process_path(const char *pat
        return add_one_path(ce, path, len, &st);
  }
  
 -static int add_cacheinfo(unsigned int mode, const unsigned char *sha1,
 +static int add_cacheinfo(unsigned int mode, const struct object_id *oid,
                         const char *path, int stage)
  {
        int size, len, option;
        size = cache_entry_size(len);
        ce = xcalloc(1, size);
  
 -      hashcpy(ce->sha1, sha1);
 +      oidcpy(&ce->oid, oid);
        memcpy(ce->name, path, len);
        ce->ce_flags = create_ce_flags(stage);
        ce->ce_namelen = len;
        return 0;
  }
  
 -static void chmod_path(int flip, const char *path)
 +static void chmod_path(char flip, const char *path)
  {
        int pos;
        struct cache_entry *ce;
 -      unsigned int mode;
  
        pos = cache_name_pos(path, strlen(path));
        if (pos < 0)
                goto fail;
        ce = active_cache[pos];
 -      mode = ce->ce_mode;
 -      if (!S_ISREG(mode))
 -              goto fail;
 -      switch (flip) {
 -      case '+':
 -              ce->ce_mode |= 0111; break;
 -      case '-':
 -              ce->ce_mode &= ~0111; break;
 -      default:
 +      if (chmod_cache_entry(ce, flip) < 0)
                goto fail;
 -      }
 -      cache_tree_invalidate_path(&the_index, path);
 -      ce->ce_flags |= CE_UPDATE_IN_BASE;
 -      active_cache_changed |= CE_ENTRY_CHANGED;
 +
        report("chmod %cx '%s'", flip, path);
        return;
   fail:
@@@ -465,17 -481,15 +469,17 @@@ static void update_one(const char *path
        report("add '%s'", path);
  }
  
 -static void read_index_info(int line_termination)
 +static void read_index_info(int nul_term_line)
  {
        struct strbuf buf = STRBUF_INIT;
        struct strbuf uq = STRBUF_INIT;
 +      strbuf_getline_fn getline_fn;
  
 -      while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
 +      getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf;
 +      while (getline_fn(&buf, stdin) != EOF) {
                char *ptr, *tab;
                char *path_name;
 -              unsigned char sha1[20];
 +              struct object_id oid;
                unsigned int mode;
                unsigned long ul;
                int stage;
                mode = ul;
  
                tab = strchr(ptr, '\t');
 -              if (!tab || tab - ptr < 41)
 +              if (!tab || tab - ptr < GIT_SHA1_HEXSZ + 1)
                        goto bad_line;
  
                if (tab[-2] == ' ' && '0' <= tab[-1] && tab[-1] <= '3') {
                        ptr = tab + 1; /* point at the head of path */
                }
  
 -              if (get_sha1_hex(tab - 40, sha1) || tab[-41] != ' ')
 +              if (get_oid_hex(tab - GIT_SHA1_HEXSZ, &oid) ||
 +                      tab[-(GIT_SHA1_HEXSZ + 1)] != ' ')
                        goto bad_line;
  
                path_name = ptr;
 -              if (line_termination && path_name[0] == '"') {
 +              if (!nul_term_line && path_name[0] == '"') {
                        strbuf_reset(&uq);
                        if (unquote_c_style(&uq, path_name, NULL)) {
                                die("git update-index: bad quoting of path name");
                         * ptr[-1] points at tab,
                         * ptr[-41] is at the beginning of sha1
                         */
 -                      ptr[-42] = ptr[-1] = 0;
 -                      if (add_cacheinfo(mode, sha1, path_name, stage))
 +                      ptr[-(GIT_SHA1_HEXSZ + 2)] = ptr[-1] = 0;
 +                      if (add_cacheinfo(mode, &oid, path_name, stage))
                                die("git update-index: unable to update %s",
                                    path_name);
                }
@@@ -565,19 -578,19 +569,19 @@@ static const char * const update_index_
        NULL
  };
  
 -static unsigned char head_sha1[20];
 -static unsigned char merge_head_sha1[20];
 +static struct object_id head_oid;
 +static struct object_id merge_head_oid;
  
  static struct cache_entry *read_one_ent(const char *which,
 -                                      unsigned char *ent, const char *path,
 +                                      struct object_id *ent, const char *path,
                                        int namelen, int stage)
  {
        unsigned mode;
 -      unsigned char sha1[20];
 +      struct object_id oid;
        int size;
        struct cache_entry *ce;
  
 -      if (get_tree_entry(ent, path, sha1, &mode)) {
 +      if (get_tree_entry(ent->hash, path, oid.hash, &mode)) {
                if (which)
                        error("%s: not in %s branch.", path, which);
                return NULL;
        size = cache_entry_size(namelen);
        ce = xcalloc(1, size);
  
 -      hashcpy(ce->sha1, sha1);
 +      oidcpy(&ce->oid, &oid);
        memcpy(ce->name, path, namelen);
        ce->ce_flags = create_ce_flags(stage);
        ce->ce_namelen = namelen;
@@@ -640,14 -653,14 +644,14 @@@ static int unresolve_one(const char *pa
         * stuff HEAD version in stage #2,
         * stuff MERGE_HEAD version in stage #3.
         */
 -      ce_2 = read_one_ent("our", head_sha1, path, namelen, 2);
 -      ce_3 = read_one_ent("their", merge_head_sha1, path, namelen, 3);
 +      ce_2 = read_one_ent("our", &head_oid, path, namelen, 2);
 +      ce_3 = read_one_ent("their", &merge_head_oid, path, namelen, 3);
  
        if (!ce_2 || !ce_3) {
                ret = -1;
                goto free_return;
        }
 -      if (!hashcmp(ce_2->sha1, ce_3->sha1) &&
 +      if (!oidcmp(&ce_2->oid, &ce_3->oid) &&
            ce_2->ce_mode == ce_3->ce_mode) {
                fprintf(stderr, "%s: identical in both, skipping.\n",
                        path);
  
  static void read_head_pointers(void)
  {
 -      if (read_ref("HEAD", head_sha1))
 +      if (read_ref("HEAD", head_oid.hash))
                die("No HEAD -- no initial commit yet?");
 -      if (read_ref("MERGE_HEAD", merge_head_sha1)) {
 +      if (read_ref("MERGE_HEAD", merge_head_oid.hash)) {
                fprintf(stderr, "Not in the middle of a merge.\n");
                exit(0);
        }
@@@ -714,7 -727,7 +718,7 @@@ static int do_reupdate(int ac, const ch
                       PATHSPEC_PREFER_CWD,
                       prefix, av + 1);
  
 -      if (read_ref("HEAD", head_sha1))
 +      if (read_ref("HEAD", head_oid.hash))
                /* If there is no HEAD, that means it is an initial
                 * commit.  Update everything in the index.
                 */
                if (ce_stage(ce) || !ce_path_match(ce, &pathspec, NULL))
                        continue;
                if (has_head)
 -                      old = read_one_ent(NULL, head_sha1,
 +                      old = read_one_ent(NULL, &head_oid,
                                           ce->name, ce_namelen(ce), 0);
                if (old && ce->ce_mode == old->ce_mode &&
 -                  !hashcmp(ce->sha1, old->sha1)) {
 +                  !oidcmp(&ce->oid, &old->oid)) {
                        free(old);
                        continue; /* unchanged */
                }
                if (save_nr != active_nr)
                        goto redo;
        }
 -      free_pathspec(&pathspec);
 +      clear_pathspec(&pathspec);
        return 0;
  }
  
@@@ -796,7 -809,7 +800,7 @@@ static int resolve_undo_clear_callback(
  
  static int parse_new_style_cacheinfo(const char *arg,
                                     unsigned int *mode,
 -                                   unsigned char sha1[],
 +                                   struct object_id *oid,
                                     const char **path)
  {
        unsigned long ul;
                return -1; /* not a new-style cacheinfo */
        *mode = ul;
        endp++;
 -      if (get_sha1_hex(endp, sha1) || endp[40] != ',')
 +      if (get_oid_hex(endp, oid) || endp[GIT_SHA1_HEXSZ] != ',')
                return -1;
 -      *path = endp + 41;
 +      *path = endp + GIT_SHA1_HEXSZ + 1;
        return 0;
  }
  
  static int cacheinfo_callback(struct parse_opt_ctx_t *ctx,
                                const struct option *opt, int unset)
  {
 -      unsigned char sha1[20];
 +      struct object_id oid;
        unsigned int mode;
        const char *path;
  
 -      if (!parse_new_style_cacheinfo(ctx->argv[1], &mode, sha1, &path)) {
 -              if (add_cacheinfo(mode, sha1, path, 0))
 +      if (!parse_new_style_cacheinfo(ctx->argv[1], &mode, &oid, &path)) {
 +              if (add_cacheinfo(mode, &oid, path, 0))
                        die("git update-index: --cacheinfo cannot add %s", path);
                ctx->argv++;
                ctx->argc--;
        if (ctx->argc <= 3)
                return error("option 'cacheinfo' expects <mode>,<sha1>,<path>");
        if (strtoul_ui(*++ctx->argv, 8, &mode) ||
 -          get_sha1_hex(*++ctx->argv, sha1) ||
 -          add_cacheinfo(mode, sha1, *++ctx->argv, 0))
 +          get_oid_hex(*++ctx->argv, &oid) ||
 +          add_cacheinfo(mode, &oid, *++ctx->argv, 0))
                die("git update-index: --cacheinfo cannot add %s", *ctx->argv);
        ctx->argc -= 3;
        return 0;
  static int stdin_cacheinfo_callback(struct parse_opt_ctx_t *ctx,
                              const struct option *opt, int unset)
  {
 -      int *line_termination = opt->value;
 +      int *nul_term_line = opt->value;
  
        if (ctx->argc != 1)
                return error("option '%s' must be the last argument", opt->long_name);
        allow_add = allow_replace = allow_remove = 1;
 -      read_index_info(*line_termination);
 +      read_index_info(*nul_term_line);
        return 0;
  }
  
@@@ -901,7 -914,7 +905,7 @@@ static int reupdate_callback(struct par
  
  int cmd_update_index(int argc, const char **argv, const char *prefix)
  {
 -      int newfd, entries, has_errors = 0, line_termination = '\n';
 +      int newfd, entries, has_errors = 0, nul_term_line = 0;
        enum uc_mode untracked_cache = UC_UNSPECIFIED;
        int read_from_stdin = 0;
        int prefix_length = prefix ? strlen(prefix) : 0;
        int split_index = -1;
        struct lock_file *lock_file;
        struct parse_opt_ctx_t ctx;
 +      strbuf_getline_fn getline_fn;
        int parseopt_state = PARSE_OPT_UNKNOWN;
        struct option options[] = {
                OPT_BIT('q', NULL, &refresh_args.flags,
                        N_("add to index only; do not add content to object database"), 1),
                OPT_SET_INT(0, "force-remove", &force_remove,
                        N_("remove named paths even if present in worktree"), 1),
 -              OPT_SET_INT('z', NULL, &line_termination,
 -                      N_("with --stdin: input lines are terminated by null bytes"), '\0'),
 +              OPT_BOOL('z', NULL, &nul_term_line,
 +                       N_("with --stdin: input lines are terminated by null bytes")),
                {OPTION_LOWLEVEL_CALLBACK, 0, "stdin", &read_from_stdin, NULL,
                        N_("read list of paths to be updated from standard input"),
                        PARSE_OPT_NONEG | PARSE_OPT_NOARG,
                        (parse_opt_cb *) stdin_callback},
 -              {OPTION_LOWLEVEL_CALLBACK, 0, "index-info", &line_termination, NULL,
 +              {OPTION_LOWLEVEL_CALLBACK, 0, "index-info", &nul_term_line, NULL,
                        N_("add entries from standard input to the index"),
                        PARSE_OPT_NONEG | PARSE_OPT_NOARG,
                        (parse_opt_cb *) stdin_cacheinfo_callback},
        /* We can't free this memory, it becomes part of a linked list parsed atexit() */
        lock_file = xcalloc(1, sizeof(struct lock_file));
  
 +      /* we will diagnose later if it turns out that we need to update it */
        newfd = hold_locked_index(lock_file, 0);
        if (newfd < 0)
                lock_error = errno;
                }
        }
        argc = parse_options_end(&ctx);
 +
 +      getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf;
        if (preferred_index_format) {
                if (preferred_index_format < INDEX_FORMAT_LB ||
                    INDEX_FORMAT_UB < preferred_index_format)
        }
  
        if (read_from_stdin) {
 -              struct strbuf buf = STRBUF_INIT, nbuf = STRBUF_INIT;
 +              struct strbuf buf = STRBUF_INIT;
 +              struct strbuf unquoted = STRBUF_INIT;
  
                setup_work_tree();
 -              while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
 +              while (getline_fn(&buf, stdin) != EOF) {
                        char *p;
 -                      if (line_termination && buf.buf[0] == '"') {
 -                              strbuf_reset(&nbuf);
 -                              if (unquote_c_style(&nbuf, buf.buf, NULL))
 +                      if (!nul_term_line && buf.buf[0] == '"') {
 +                              strbuf_reset(&unquoted);
 +                              if (unquote_c_style(&unquoted, buf.buf, NULL))
                                        die("line is badly quoted");
 -                              strbuf_swap(&buf, &nbuf);
 +                              strbuf_swap(&buf, &unquoted);
                        }
                        p = prefix_path(prefix, prefix_length, buf.buf);
                        update_one(p);
                                chmod_path(set_executable_bit, p);
                        free(p);
                }
 -              strbuf_release(&nbuf);
 +              strbuf_release(&unquoted);
                strbuf_release(&buf);
        }
  
        if (split_index > 0) {
 -              init_split_index(&the_index);
 -              the_index.cache_changed |= SPLIT_INDEX_ORDERED;
 -      } else if (!split_index && the_index.split_index) {
 -              /*
 -               * can't discard_split_index(&the_index); because that
 -               * will destroy split_index->base->cache[], which may
 -               * be shared with the_index.cache[]. So yeah we're
 -               * leaking a bit here.
 -               */
 -              the_index.split_index = NULL;
 -              the_index.cache_changed |= SOMETHING_CHANGED;
 +              if (git_config_get_split_index() == 0)
 +                      warning(_("core.splitIndex is set to false; "
 +                                "remove or change it, if you really want to "
 +                                "enable split index"));
 +              if (the_index.split_index)
 +                      the_index.cache_changed |= SPLIT_INDEX_ORDERED;
 +              else
 +                      add_split_index(&the_index);
 +      } else if (!split_index) {
 +              if (git_config_get_split_index() == 1)
 +                      warning(_("core.splitIndex is set to true; "
 +                                "remove or change it, if you really want to "
 +                                "disable split index"));
 +              remove_split_index(&the_index);
        }
  
        switch (untracked_cache) {
                break;
        case UC_DISABLE:
                if (git_config_get_untracked_cache() == 1)
 -                      warning("core.untrackedCache is set to true; "
 -                              "remove or change it, if you really want to "
 -                              "disable the untracked cache");
 +                      warning(_("core.untrackedCache is set to true; "
 +                                "remove or change it, if you really want to "
 +                                "disable the untracked cache"));
                remove_untracked_cache(&the_index);
                report(_("Untracked cache disabled"));
                break;
        case UC_ENABLE:
        case UC_FORCE:
                if (git_config_get_untracked_cache() == 0)
 -                      warning("core.untrackedCache is set to false; "
 -                              "remove or change it, if you really want to "
 -                              "enable the untracked cache");
 +                      warning(_("core.untrackedCache is set to false; "
 +                                "remove or change it, if you really want to "
 +                                "enable the untracked cache"));
                add_untracked_cache(&the_index);
                report(_("Untracked cache enabled for '%s'"), get_git_work_tree());
                break;
        default:
 -              die("Bug: bad untracked_cache value: %d", untracked_cache);
 +              die("BUG: bad untracked_cache value: %d", untracked_cache);
        }
  
        if (active_cache_changed) {