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 minimum_abbrev = 4, default_abbrev = 7;
  19int ignore_case;
  20int assume_unchanged;
  21int prefer_symlink_refs;
  22int is_bare_repository_cfg = -1; /* unspecified */
  23int log_all_ref_updates = -1; /* unspecified */
  24int warn_ambiguous_refs = 1;
  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 (git_work_tree_initialized) {
 143                new_work_tree = make_absolute_path(new_work_tree);
 144                if (strcmp(new_work_tree, work_tree))
 145                        die("internal error: work tree has already been set\n"
 146                            "Current worktree: %s\nNew worktree: %s",
 147                            work_tree, new_work_tree);
 148                return;
 149        }
 150        git_work_tree_initialized = 1;
 151        work_tree = xstrdup(make_absolute_path(new_work_tree));
 152}
 153
 154const char *get_git_work_tree(void)
 155{
 156        return work_tree;
 157}
 158
 159char *get_object_directory(void)
 160{
 161        if (!git_object_dir)
 162                setup_git_env();
 163        return git_object_dir;
 164}
 165
 166int odb_mkstemp(char *template, size_t limit, const char *pattern)
 167{
 168        int fd;
 169        /*
 170         * we let the umask do its job, don't try to be more
 171         * restrictive except to remove write permission.
 172         */
 173        int mode = 0444;
 174        snprintf(template, limit, "%s/%s",
 175                 get_object_directory(), pattern);
 176        fd = git_mkstemp_mode(template, mode);
 177        if (0 <= fd)
 178                return fd;
 179
 180        /* slow path */
 181        /* some mkstemp implementations erase template on failure */
 182        snprintf(template, limit, "%s/%s",
 183                 get_object_directory(), pattern);
 184        safe_create_leading_directories(template);
 185        return xmkstemp_mode(template, mode);
 186}
 187
 188int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1)
 189{
 190        int fd;
 191
 192        snprintf(name, namesz, "%s/pack/pack-%s.keep",
 193                 get_object_directory(), sha1_to_hex(sha1));
 194        fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
 195        if (0 <= fd)
 196                return fd;
 197
 198        /* slow path */
 199        safe_create_leading_directories(name);
 200        return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
 201}
 202
 203char *get_index_file(void)
 204{
 205        if (!git_index_file)
 206                setup_git_env();
 207        return git_index_file;
 208}
 209
 210char *get_graft_file(void)
 211{
 212        if (!git_graft_file)
 213                setup_git_env();
 214        return git_graft_file;
 215}
 216
 217int set_git_dir(const char *path)
 218{
 219        if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
 220                return error("Could not set GIT_DIR to '%s'", path);
 221        setup_git_env();
 222        return 0;
 223}
 224
 225const char *get_log_output_encoding(void)
 226{
 227        return git_log_output_encoding ? git_log_output_encoding
 228                : get_commit_output_encoding();
 229}
 230
 231const char *get_commit_output_encoding(void)
 232{
 233        return git_commit_encoding ? git_commit_encoding : "UTF-8";
 234}