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 unique_abbrev_extra_length;
  25int repository_format_version;
  26const char *git_commit_encoding;
  27const char *git_log_output_encoding;
  28int shared_repository = PERM_UMASK;
  29const char *apply_default_whitespace;
  30const char *apply_default_ignorewhitespace;
  31int zlib_compression_level = Z_BEST_SPEED;
  32int core_compression_level;
  33int core_compression_seen;
  34int fsync_object_files;
  35size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
  36size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
  37size_t delta_base_cache_limit = 16 * 1024 * 1024;
  38const char *pager_program;
  39int pager_use_color = 1;
  40const char *editor_program;
  41const char *askpass_program;
  42const char *excludes_file;
  43enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
  44int read_replace_refs = 1;
  45enum eol eol = EOL_UNSET;
  46enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
  47unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
  48enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
  49enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
  50enum push_default_type push_default = PUSH_DEFAULT_MATCHING;
  51#ifndef OBJECT_CREATION_MODE
  52#define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
  53#endif
  54enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
  55char *notes_ref_name;
  56int grafts_replace_parents = 1;
  57int core_apply_sparse_checkout;
  58struct startup_info *startup_info;
  59
  60/* Parallel index stat data preload? */
  61int core_preload_index = 0;
  62
  63/* This is set by setup_git_dir_gently() and/or git_default_config() */
  64char *git_work_tree_cfg;
  65static char *work_tree;
  66
  67static const char *git_dir;
  68static char *git_object_dir, *git_index_file, *git_graft_file;
  69
  70/*
  71 * Repository-local GIT_* environment variables
  72 * Remember to update local_repo_env_size in cache.h when
  73 * the size of the list changes
  74 */
  75const char * const local_repo_env[LOCAL_REPO_ENV_SIZE + 1] = {
  76        ALTERNATE_DB_ENVIRONMENT,
  77        CONFIG_ENVIRONMENT,
  78        CONFIG_DATA_ENVIRONMENT,
  79        DB_ENVIRONMENT,
  80        GIT_DIR_ENVIRONMENT,
  81        GIT_WORK_TREE_ENVIRONMENT,
  82        GRAFT_ENVIRONMENT,
  83        INDEX_ENVIRONMENT,
  84        NO_REPLACE_OBJECTS_ENVIRONMENT,
  85        NULL
  86};
  87
  88static void setup_git_env(void)
  89{
  90        git_dir = getenv(GIT_DIR_ENVIRONMENT);
  91        git_dir = git_dir ? xstrdup(git_dir) : NULL;
  92        if (!git_dir) {
  93                git_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
  94                git_dir = git_dir ? xstrdup(git_dir) : NULL;
  95        }
  96        if (!git_dir)
  97                git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
  98        git_object_dir = getenv(DB_ENVIRONMENT);
  99        if (!git_object_dir) {
 100                git_object_dir = xmalloc(strlen(git_dir) + 9);
 101                sprintf(git_object_dir, "%s/objects", git_dir);
 102        }
 103        git_index_file = getenv(INDEX_ENVIRONMENT);
 104        if (!git_index_file) {
 105                git_index_file = xmalloc(strlen(git_dir) + 7);
 106                sprintf(git_index_file, "%s/index", git_dir);
 107        }
 108        git_graft_file = getenv(GRAFT_ENVIRONMENT);
 109        if (!git_graft_file)
 110                git_graft_file = git_pathdup("info/grafts");
 111        if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
 112                read_replace_refs = 0;
 113}
 114
 115int is_bare_repository(void)
 116{
 117        /* if core.bare is not 'false', let's see if there is a work tree */
 118        return is_bare_repository_cfg && !get_git_work_tree();
 119}
 120
 121int have_git_dir(void)
 122{
 123        return !!git_dir;
 124}
 125
 126const char *get_git_dir(void)
 127{
 128        if (!git_dir)
 129                setup_git_env();
 130        return git_dir;
 131}
 132
 133static int git_work_tree_initialized;
 134
 135/*
 136 * Note.  This works only before you used a work tree.  This was added
 137 * primarily to support git-clone to work in a new repository it just
 138 * created, and is not meant to flip between different work trees.
 139 */
 140void set_git_work_tree(const char *new_work_tree)
 141{
 142        if (is_bare_repository_cfg >= 0)
 143                die("cannot set work tree after initialization");
 144        git_work_tree_initialized = 1;
 145        free(work_tree);
 146        work_tree = xstrdup(make_absolute_path(new_work_tree));
 147        is_bare_repository_cfg = 0;
 148}
 149
 150const char *get_git_work_tree(void)
 151{
 152        if (!git_work_tree_initialized) {
 153                work_tree = getenv(GIT_WORK_TREE_ENVIRONMENT);
 154                /* core.bare = true overrides implicit and config work tree */
 155                if (!work_tree && is_bare_repository_cfg < 1) {
 156                        work_tree = git_work_tree_cfg;
 157                        /* make_absolute_path also normalizes the path */
 158                        if (work_tree && !is_absolute_path(work_tree))
 159                                work_tree = xstrdup(make_absolute_path(git_path("%s", work_tree)));
 160                } else if (work_tree)
 161                        work_tree = xstrdup(make_absolute_path(work_tree));
 162                git_work_tree_initialized = 1;
 163                if (work_tree)
 164                        is_bare_repository_cfg = 0;
 165        }
 166        return work_tree;
 167}
 168
 169char *get_object_directory(void)
 170{
 171        if (!git_object_dir)
 172                setup_git_env();
 173        return git_object_dir;
 174}
 175
 176int odb_mkstemp(char *template, size_t limit, const char *pattern)
 177{
 178        int fd;
 179        /*
 180         * we let the umask do its job, don't try to be more
 181         * restrictive except to remove write permission.
 182         */
 183        int mode = 0444;
 184        snprintf(template, limit, "%s/%s",
 185                 get_object_directory(), pattern);
 186        fd = git_mkstemp_mode(template, mode);
 187        if (0 <= fd)
 188                return fd;
 189
 190        /* slow path */
 191        /* some mkstemp implementations erase template on failure */
 192        snprintf(template, limit, "%s/%s",
 193                 get_object_directory(), pattern);
 194        safe_create_leading_directories(template);
 195        return xmkstemp_mode(template, mode);
 196}
 197
 198int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1)
 199{
 200        int fd;
 201
 202        snprintf(name, namesz, "%s/pack/pack-%s.keep",
 203                 get_object_directory(), sha1_to_hex(sha1));
 204        fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
 205        if (0 <= fd)
 206                return fd;
 207
 208        /* slow path */
 209        safe_create_leading_directories(name);
 210        return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
 211}
 212
 213char *get_index_file(void)
 214{
 215        if (!git_index_file)
 216                setup_git_env();
 217        return git_index_file;
 218}
 219
 220char *get_graft_file(void)
 221{
 222        if (!git_graft_file)
 223                setup_git_env();
 224        return git_graft_file;
 225}
 226
 227int set_git_dir(const char *path)
 228{
 229        if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
 230                return error("Could not set GIT_DIR to '%s'", path);
 231        setup_git_env();
 232        return 0;
 233}
 234
 235const char *get_log_output_encoding(void)
 236{
 237        return git_log_output_encoding ? git_log_output_encoding
 238                : get_commit_output_encoding();
 239}
 240
 241const char *get_commit_output_encoding(void)
 242{
 243        return git_commit_encoding ? git_commit_encoding : "UTF-8";
 244}