Andrew's git / gitweb.git /
a73b08f5d9fa61afe691dd489b951fd341142850
   1/*
   2 * We put all the git config variables in this same object
   3 * file, so that programs can link against the config parser
   4 * without having to link against all the rest of git.
   5 *
   6 * In particular, no need to bring in libz etc unless needed,
   7 * even if you might want to know where the git directory etc
   8 * are.
   9 */
  10#include "cache.h"
  11#include "config.h"
  12#include "refs.h"
  13#include "fmt-merge-msg.h"
  14#include "commit.h"
  15
  16int trust_executable_bit = 1;
  17int trust_ctime = 1;
  18int check_stat = 1;
  19int has_symlinks = 1;
  20int minimum_abbrev = 4, default_abbrev = -1;
  21int ignore_case;
  22int assume_unchanged;
  23int prefer_symlink_refs;
  24int is_bare_repository_cfg = -1; /* unspecified */
  25int warn_ambiguous_refs = 1;
  26int warn_on_object_refname_ambiguity = 1;
  27int ref_paranoia = -1;
  28int repository_format_precious_objects;
  29const char *git_commit_encoding;
  30const char *git_log_output_encoding;
  31const char *apply_default_whitespace;
  32const char *apply_default_ignorewhitespace;
  33const char *git_attributes_file;
  34const char *git_hooks_path;
  35int zlib_compression_level = Z_BEST_SPEED;
  36int core_compression_level;
  37int pack_compression_level = Z_DEFAULT_COMPRESSION;
  38int fsync_object_files;
  39size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
  40size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
  41size_t delta_base_cache_limit = 96 * 1024 * 1024;
  42unsigned long big_file_threshold = 512 * 1024 * 1024;
  43int pager_use_color = 1;
  44const char *editor_program;
  45const char *askpass_program;
  46const char *excludes_file;
  47enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
  48int check_replace_refs = 1;
  49char *git_replace_ref_base;
  50enum eol core_eol = EOL_UNSET;
  51enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
  52unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
  53enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
  54enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
  55enum push_default_type push_default = PUSH_DEFAULT_UNSPECIFIED;
  56#ifndef OBJECT_CREATION_MODE
  57#define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
  58#endif
  59enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
  60char *notes_ref_name;
  61int grafts_replace_parents = 1;
  62int core_apply_sparse_checkout;
  63int merge_log_config = -1;
  64int precomposed_unicode = -1; /* see probe_utf8_pathname_composition() */
  65unsigned long pack_size_limit_cfg;
  66enum hide_dotfiles_type hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
  67enum log_refs_config log_all_ref_updates = LOG_REFS_UNSET;
  68
  69#ifndef PROTECT_HFS_DEFAULT
  70#define PROTECT_HFS_DEFAULT 0
  71#endif
  72int protect_hfs = PROTECT_HFS_DEFAULT;
  73
  74#ifndef PROTECT_NTFS_DEFAULT
  75#define PROTECT_NTFS_DEFAULT 0
  76#endif
  77int protect_ntfs = PROTECT_NTFS_DEFAULT;
  78
  79/*
  80 * The character that begins a commented line in user-editable file
  81 * that is subject to stripspace.
  82 */
  83char comment_line_char = '#';
  84int auto_comment_line_char;
  85
  86/* Parallel index stat data preload? */
  87int core_preload_index = 1;
  88
  89/*
  90 * This is a hack for test programs like test-dump-untracked-cache to
  91 * ensure that they do not modify the untracked cache when reading it.
  92 * Do not use it otherwise!
  93 */
  94int ignore_untracked_cache_config;
  95
  96/* This is set by setup_git_dir_gently() and/or git_default_config() */
  97char *git_work_tree_cfg;
  98static char *work_tree;
  99
 100static const char *namespace;
 101static size_t namespace_len;
 102
 103static const char *super_prefix;
 104
 105static const char *git_dir, *git_common_dir;
 106static char *git_object_dir, *git_index_file, *git_graft_file;
 107int git_db_env, git_index_env, git_graft_env, git_common_dir_env;
 108
 109/*
 110 * Repository-local GIT_* environment variables; see cache.h for details.
 111 */
 112const char * const local_repo_env[] = {
 113        ALTERNATE_DB_ENVIRONMENT,
 114        CONFIG_ENVIRONMENT,
 115        CONFIG_DATA_ENVIRONMENT,
 116        DB_ENVIRONMENT,
 117        GIT_DIR_ENVIRONMENT,
 118        GIT_WORK_TREE_ENVIRONMENT,
 119        GIT_IMPLICIT_WORK_TREE_ENVIRONMENT,
 120        GRAFT_ENVIRONMENT,
 121        INDEX_ENVIRONMENT,
 122        NO_REPLACE_OBJECTS_ENVIRONMENT,
 123        GIT_REPLACE_REF_BASE_ENVIRONMENT,
 124        GIT_PREFIX_ENVIRONMENT,
 125        GIT_SUPER_PREFIX_ENVIRONMENT,
 126        GIT_SHALLOW_FILE_ENVIRONMENT,
 127        GIT_COMMON_DIR_ENVIRONMENT,
 128        NULL
 129};
 130
 131static char *expand_namespace(const char *raw_namespace)
 132{
 133        struct strbuf buf = STRBUF_INIT;
 134        struct strbuf **components, **c;
 135
 136        if (!raw_namespace || !*raw_namespace)
 137                return xstrdup("");
 138
 139        strbuf_addstr(&buf, raw_namespace);
 140        components = strbuf_split(&buf, '/');
 141        strbuf_reset(&buf);
 142        for (c = components; *c; c++)
 143                if (strcmp((*c)->buf, "/") != 0)
 144                        strbuf_addf(&buf, "refs/namespaces/%s", (*c)->buf);
 145        strbuf_list_free(components);
 146        if (check_refname_format(buf.buf, 0))
 147                die("bad git namespace path \"%s\"", raw_namespace);
 148        strbuf_addch(&buf, '/');
 149        return strbuf_detach(&buf, NULL);
 150}
 151
 152static char *git_path_from_env(const char *envvar, const char *git_dir,
 153                               const char *path, int *fromenv)
 154{
 155        const char *value = getenv(envvar);
 156        if (!value)
 157                return xstrfmt("%s/%s", git_dir, path);
 158        if (fromenv)
 159                *fromenv = 1;
 160        return xstrdup(value);
 161}
 162
 163void setup_git_env(void)
 164{
 165        struct strbuf sb = STRBUF_INIT;
 166        const char *gitfile;
 167        const char *shallow_file;
 168        const char *replace_ref_base;
 169
 170        git_dir = getenv(GIT_DIR_ENVIRONMENT);
 171        if (!git_dir) {
 172                if (!startup_info->have_repository)
 173                        BUG("setup_git_env called without repository");
 174                git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
 175        }
 176        gitfile = read_gitfile(git_dir);
 177        git_dir = xstrdup(gitfile ? gitfile : git_dir);
 178        if (get_common_dir(&sb, git_dir))
 179                git_common_dir_env = 1;
 180        git_common_dir = strbuf_detach(&sb, NULL);
 181        git_object_dir = git_path_from_env(DB_ENVIRONMENT, git_common_dir,
 182                                           "objects", &git_db_env);
 183        git_index_file = git_path_from_env(INDEX_ENVIRONMENT, git_dir,
 184                                           "index", &git_index_env);
 185        git_graft_file = git_path_from_env(GRAFT_ENVIRONMENT, git_common_dir,
 186                                           "info/grafts", &git_graft_env);
 187        if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
 188                check_replace_refs = 0;
 189        replace_ref_base = getenv(GIT_REPLACE_REF_BASE_ENVIRONMENT);
 190        git_replace_ref_base = xstrdup(replace_ref_base ? replace_ref_base
 191                                                          : "refs/replace/");
 192        namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT));
 193        namespace_len = strlen(namespace);
 194        shallow_file = getenv(GIT_SHALLOW_FILE_ENVIRONMENT);
 195        if (shallow_file)
 196                set_alternate_shallow_file(shallow_file, 0);
 197}
 198
 199int is_bare_repository(void)
 200{
 201        /* if core.bare is not 'false', let's see if there is a work tree */
 202        return is_bare_repository_cfg && !get_git_work_tree();
 203}
 204
 205int have_git_dir(void)
 206{
 207        return startup_info->have_repository
 208                || git_dir;
 209}
 210
 211const char *get_git_dir(void)
 212{
 213        if (!git_dir)
 214                BUG("git environment hasn't been setup");
 215        return git_dir;
 216}
 217
 218const char *get_git_common_dir(void)
 219{
 220        if (!git_dir)
 221                BUG("git environment hasn't been setup");
 222        return git_common_dir;
 223}
 224
 225const char *get_git_namespace(void)
 226{
 227        if (!namespace)
 228                BUG("git environment hasn't been setup");
 229        return namespace;
 230}
 231
 232const char *strip_namespace(const char *namespaced_ref)
 233{
 234        if (!starts_with(namespaced_ref, get_git_namespace()))
 235                return NULL;
 236        return namespaced_ref + namespace_len;
 237}
 238
 239const char *get_super_prefix(void)
 240{
 241        static int initialized;
 242        if (!initialized) {
 243                super_prefix = getenv(GIT_SUPER_PREFIX_ENVIRONMENT);
 244                initialized = 1;
 245        }
 246        return super_prefix;
 247}
 248
 249static int git_work_tree_initialized;
 250
 251/*
 252 * Note.  This works only before you used a work tree.  This was added
 253 * primarily to support git-clone to work in a new repository it just
 254 * created, and is not meant to flip between different work trees.
 255 */
 256void set_git_work_tree(const char *new_work_tree)
 257{
 258        if (git_work_tree_initialized) {
 259                new_work_tree = real_path(new_work_tree);
 260                if (strcmp(new_work_tree, work_tree))
 261                        die("internal error: work tree has already been set\n"
 262                            "Current worktree: %s\nNew worktree: %s",
 263                            work_tree, new_work_tree);
 264                return;
 265        }
 266        git_work_tree_initialized = 1;
 267        work_tree = real_pathdup(new_work_tree, 1);
 268}
 269
 270const char *get_git_work_tree(void)
 271{
 272        return work_tree;
 273}
 274
 275char *get_object_directory(void)
 276{
 277        if (!git_object_dir)
 278                BUG("git environment hasn't been setup");
 279        return git_object_dir;
 280}
 281
 282int odb_mkstemp(struct strbuf *template, const char *pattern)
 283{
 284        int fd;
 285        /*
 286         * we let the umask do its job, don't try to be more
 287         * restrictive except to remove write permission.
 288         */
 289        int mode = 0444;
 290        git_path_buf(template, "objects/%s", pattern);
 291        fd = git_mkstemp_mode(template->buf, mode);
 292        if (0 <= fd)
 293                return fd;
 294
 295        /* slow path */
 296        /* some mkstemp implementations erase template on failure */
 297        git_path_buf(template, "objects/%s", pattern);
 298        safe_create_leading_directories(template->buf);
 299        return xmkstemp_mode(template->buf, mode);
 300}
 301
 302int odb_pack_keep(const char *name)
 303{
 304        int fd;
 305
 306        fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
 307        if (0 <= fd)
 308                return fd;
 309
 310        /* slow path */
 311        safe_create_leading_directories_const(name);
 312        return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
 313}
 314
 315char *get_index_file(void)
 316{
 317        if (!git_index_file)
 318                BUG("git environment hasn't been setup");
 319        return git_index_file;
 320}
 321
 322char *get_graft_file(void)
 323{
 324        if (!git_graft_file)
 325                BUG("git environment hasn't been setup");
 326        return git_graft_file;
 327}
 328
 329int set_git_dir(const char *path)
 330{
 331        if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
 332                return error("Could not set GIT_DIR to '%s'", path);
 333        setup_git_env();
 334        return 0;
 335}
 336
 337const char *get_log_output_encoding(void)
 338{
 339        return git_log_output_encoding ? git_log_output_encoding
 340                : get_commit_output_encoding();
 341}
 342
 343const char *get_commit_output_encoding(void)
 344{
 345        return git_commit_encoding ? git_commit_encoding : "UTF-8";
 346}
 347
 348static int the_shared_repository = PERM_UMASK;
 349static int need_shared_repository_from_config = 1;
 350
 351void set_shared_repository(int value)
 352{
 353        the_shared_repository = value;
 354        need_shared_repository_from_config = 0;
 355}
 356
 357int get_shared_repository(void)
 358{
 359        if (need_shared_repository_from_config) {
 360                const char *var = "core.sharedrepository";
 361                const char *value;
 362                if (!git_config_get_value(var, &value))
 363                        the_shared_repository = git_config_perm(var, value);
 364                need_shared_repository_from_config = 0;
 365        }
 366        return the_shared_repository;
 367}
 368
 369void reset_shared_repository(void)
 370{
 371        need_shared_repository_from_config = 1;
 372}