Andrew's git - gitweb.git/blob

   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
  12char git_default_email[MAX_GITNAME];
  13char git_default_name[MAX_GITNAME];
  14int user_ident_explicitly_given;
  15int trust_executable_bit = 1;
  16int trust_ctime = 1;
  17int has_symlinks = 1;
  18int ignore_case;
  19int assume_unchanged;
  20int prefer_symlink_refs;
  21int is_bare_repository_cfg = -1; /* unspecified */
  22int log_all_ref_updates = -1; /* unspecified */
  23int warn_ambiguous_refs = 1;
  24int repository_format_version;
  25const char *git_commit_encoding;
  26const char *git_log_output_encoding;
  27int shared_repository = PERM_UMASK;
  28const char *apply_default_whitespace;
  29const char *apply_default_ignorewhitespace;
  30int zlib_compression_level = Z_BEST_SPEED;
  31int core_compression_level;
  32int core_compression_seen;
  33int fsync_object_files;
  34size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
  35size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
  36size_t delta_base_cache_limit = 16 * 1024 * 1024;
  37const char *pager_program;
  38int pager_use_color = 1;
  39const char *editor_program;
  40const char *askpass_program;
  41const char *excludes_file;
  42enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
  43int read_replace_refs = 1;
  44enum eol eol = EOL_UNSET;
  45enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
  46unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
  47enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
  48enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
  49enum push_default_type push_default = PUSH_DEFAULT_MATCHING;
  50#ifndef OBJECT_CREATION_MODE
  51#define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
  52#endif
  53enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
  54char *notes_ref_name;
  55int grafts_replace_parents = 1;
  56int core_apply_sparse_checkout;
  57struct startup_info *startup_info;
  58
  59/* Parallel index stat data preload? */
  60int core_preload_index = 0;
  61
  62/* This is set by setup_git_dir_gently() and/or git_default_config() */
  63char *git_work_tree_cfg;
  64static char *work_tree;
  65
  66static const char *git_dir;
  67static char *git_object_dir, *git_index_file, *git_graft_file;
  68
  69/*
  70 * Repository-local GIT_* environment variables
  71 * Remember to update local_repo_env_size in cache.h when
  72 * the size of the list changes
  73 */
  74const char * const local_repo_env[LOCAL_REPO_ENV_SIZE + 1] = {
  75        ALTERNATE_DB_ENVIRONMENT,
  76        CONFIG_ENVIRONMENT,
  77        CONFIG_DATA_ENVIRONMENT,
  78        DB_ENVIRONMENT,
  79        GIT_DIR_ENVIRONMENT,
  80        GIT_WORK_TREE_ENVIRONMENT,
  81        GRAFT_ENVIRONMENT,
  82        INDEX_ENVIRONMENT,
  83        NO_REPLACE_OBJECTS_ENVIRONMENT,
  84        NULL
  85};
  86
  87static void setup_git_env(void)
  88{
  89        git_dir = getenv(GIT_DIR_ENVIRONMENT);
  90        git_dir = git_dir ? xstrdup(git_dir) : NULL;
  91        if (!git_dir) {
  92                git_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
  93                git_dir = git_dir ? xstrdup(git_dir) : NULL;
  94        }
  95        if (!git_dir)
  96                git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
  97        git_object_dir = getenv(DB_ENVIRONMENT);
  98        if (!git_object_dir) {
  99                git_object_dir = xmalloc(strlen(git_dir) + 9);
 100                sprintf(git_object_dir, "%s/objects", git_dir);
 101        }
 102        git_index_file = getenv(INDEX_ENVIRONMENT);
 103        if (!git_index_file) {
 104                git_index_file = xmalloc(strlen(git_dir) + 7);
 105                sprintf(git_index_file, "%s/index", git_dir);
 106        }
 107        git_graft_file = getenv(GRAFT_ENVIRONMENT);
 108        if (!git_graft_file)
 109                git_graft_file = git_pathdup("info/grafts");
 110        if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
 111                read_replace_refs = 0;
 112}
 113
 114int is_bare_repository(void)
 115{
 116        /* if core.bare is not 'false', let's see if there is a work tree */
 117        return is_bare_repository_cfg && !get_git_work_tree();
 118}
 119
 120int have_git_dir(void)
 121{
 122        return !!git_dir;
 123}
 124
 125const char *get_git_dir(void)
 126{
 127        if (!git_dir)
 128                setup_git_env();
 129        return git_dir;
 130}
 131
 132static int git_work_tree_initialized;
 133
 134/*
 135 * Note.  This works only before you used a work tree.  This was added
 136 * primarily to support git-clone to work in a new repository it just
 137 * created, and is not meant to flip between different work trees.
 138 */
 139void set_git_work_tree(const char *new_work_tree)
 140{
 141        if (git_work_tree_initialized) {
 142                new_work_tree = make_absolute_path(new_work_tree);
 143                if (strcmp(new_work_tree, work_tree))
 144                        die("internal error: work tree has already been set\n"
 145                            "Current worktree: %s\nNew worktree: %s",
 146                            work_tree, new_work_tree);
 147                return;
 148        }
 149        git_work_tree_initialized = 1;
 150        work_tree = xstrdup(make_absolute_path(new_work_tree));
 151}
 152
 153const char *get_git_work_tree(void)
 154{
 155        return work_tree;
 156}
 157
 158char *get_object_directory(void)
 159{
 160        if (!git_object_dir)
 161                setup_git_env();
 162        return git_object_dir;
 163}
 164
 165int odb_mkstemp(char *template, size_t limit, const char *pattern)
 166{
 167        int fd;
 168        /*
 169         * we let the umask do its job, don't try to be more
 170         * restrictive except to remove write permission.
 171         */
 172        int mode = 0444;
 173        snprintf(template, limit, "%s/%s",
 174                 get_object_directory(), pattern);
 175        fd = git_mkstemp_mode(template, mode);
 176        if (0 <= fd)
 177                return fd;
 178
 179        /* slow path */
 180        /* some mkstemp implementations erase template on failure */
 181        snprintf(template, limit, "%s/%s",
 182                 get_object_directory(), pattern);
 183        safe_create_leading_directories(template);
 184        return xmkstemp_mode(template, mode);
 185}
 186
 187int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1)
 188{
 189        int fd;
 190
 191        snprintf(name, namesz, "%s/pack/pack-%s.keep",
 192                 get_object_directory(), sha1_to_hex(sha1));
 193        fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
 194        if (0 <= fd)
 195                return fd;
 196
 197        /* slow path */
 198        safe_create_leading_directories(name);
 199        return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
 200}
 201
 202char *get_index_file(void)
 203{
 204        if (!git_index_file)
 205                setup_git_env();
 206        return git_index_file;
 207}
 208
 209char *get_graft_file(void)
 210{
 211        if (!git_graft_file)
 212                setup_git_env();
 213        return git_graft_file;
 214}
 215
 216int set_git_dir(const char *path)
 217{
 218        if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
 219                return error("Could not set GIT_DIR to '%s'", path);
 220        setup_git_env();
 221        return 0;
 222}
 223
 224const char *get_log_output_encoding(void)
 225{
 226        return git_log_output_encoding ? git_log_output_encoding
 227                : get_commit_output_encoding();
 228}
 229
 230const char *get_commit_output_encoding(void)
 231{
 232        return git_commit_encoding ? git_commit_encoding : "UTF-8";
 233}