environment.con commit Merge branch 'ml/mailmap' into maint-1.7.6 (6d1cdad)
   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;
  38unsigned long big_file_threshold = 512 * 1024 * 1024;
  39const char *pager_program;
  40int pager_use_color = 1;
  41const char *editor_program;
  42const char *askpass_program;
  43const char *excludes_file;
  44enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
  45int read_replace_refs = 1; /* NEEDSWORK: rename to use_replace_refs */
  46enum eol core_eol = EOL_UNSET;
  47enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
  48unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
  49enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
  50enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
  51enum push_default_type push_default = PUSH_DEFAULT_MATCHING;
  52#ifndef OBJECT_CREATION_MODE
  53#define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
  54#endif
  55enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
  56char *notes_ref_name;
  57int grafts_replace_parents = 1;
  58int core_apply_sparse_checkout;
  59struct startup_info *startup_info;
  60
  61/* Parallel index stat data preload? */
  62int core_preload_index = 0;
  63
  64/* This is set by setup_git_dir_gently() and/or git_default_config() */
  65char *git_work_tree_cfg;
  66static char *work_tree;
  67
  68static const char *git_dir;
  69static char *git_object_dir, *git_index_file, *git_graft_file;
  70
  71/*
  72 * Repository-local GIT_* environment variables
  73 * Remember to update local_repo_env_size in cache.h when
  74 * the size of the list changes
  75 */
  76const char * const local_repo_env[LOCAL_REPO_ENV_SIZE + 1] = {
  77        ALTERNATE_DB_ENVIRONMENT,
  78        CONFIG_ENVIRONMENT,
  79        CONFIG_DATA_ENVIRONMENT,
  80        DB_ENVIRONMENT,
  81        GIT_DIR_ENVIRONMENT,
  82        GIT_WORK_TREE_ENVIRONMENT,
  83        GRAFT_ENVIRONMENT,
  84        INDEX_ENVIRONMENT,
  85        NO_REPLACE_OBJECTS_ENVIRONMENT,
  86        NULL
  87};
  88
  89static void setup_git_env(void)
  90{
  91        git_dir = getenv(GIT_DIR_ENVIRONMENT);
  92        git_dir = git_dir ? xstrdup(git_dir) : NULL;
  93        if (!git_dir) {
  94                git_dir = read_gitfile(DEFAULT_GIT_DIR_ENVIRONMENT);
  95                git_dir = git_dir ? xstrdup(git_dir) : NULL;
  96        }
  97        if (!git_dir)
  98                git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
  99        git_object_dir = getenv(DB_ENVIRONMENT);
 100        if (!git_object_dir) {
 101                git_object_dir = xmalloc(strlen(git_dir) + 9);
 102                sprintf(git_object_dir, "%s/objects", git_dir);
 103        }
 104        git_index_file = getenv(INDEX_ENVIRONMENT);
 105        if (!git_index_file) {
 106                git_index_file = xmalloc(strlen(git_dir) + 7);
 107                sprintf(git_index_file, "%s/index", git_dir);
 108        }
 109        git_graft_file = getenv(GRAFT_ENVIRONMENT);
 110        if (!git_graft_file)
 111                git_graft_file = git_pathdup("info/grafts");
 112        if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
 113                read_replace_refs = 0;
 114}
 115
 116int is_bare_repository(void)
 117{
 118        /* if core.bare is not 'false', let's see if there is a work tree */
 119        return is_bare_repository_cfg && !get_git_work_tree();
 120}
 121
 122int have_git_dir(void)
 123{
 124        return !!git_dir;
 125}
 126
 127const char *get_git_dir(void)
 128{
 129        if (!git_dir)
 130                setup_git_env();
 131        return git_dir;
 132}
 133
 134static int git_work_tree_initialized;
 135
 136/*
 137 * Note.  This works only before you used a work tree.  This was added
 138 * primarily to support git-clone to work in a new repository it just
 139 * created, and is not meant to flip between different work trees.
 140 */
 141void set_git_work_tree(const char *new_work_tree)
 142{
 143        if (git_work_tree_initialized) {
 144                new_work_tree = real_path(new_work_tree);
 145                if (strcmp(new_work_tree, work_tree))
 146                        die("internal error: work tree has already been set\n"
 147                            "Current worktree: %s\nNew worktree: %s",
 148                            work_tree, new_work_tree);
 149                return;
 150        }
 151        git_work_tree_initialized = 1;
 152        work_tree = xstrdup(real_path(new_work_tree));
 153}
 154
 155const char *get_git_work_tree(void)
 156{
 157        return work_tree;
 158}
 159
 160char *get_object_directory(void)
 161{
 162        if (!git_object_dir)
 163                setup_git_env();
 164        return git_object_dir;
 165}
 166
 167int odb_mkstemp(char *template, size_t limit, const char *pattern)
 168{
 169        int fd;
 170        /*
 171         * we let the umask do its job, don't try to be more
 172         * restrictive except to remove write permission.
 173         */
 174        int mode = 0444;
 175        snprintf(template, limit, "%s/%s",
 176                 get_object_directory(), pattern);
 177        fd = git_mkstemp_mode(template, mode);
 178        if (0 <= fd)
 179                return fd;
 180
 181        /* slow path */
 182        /* some mkstemp implementations erase template on failure */
 183        snprintf(template, limit, "%s/%s",
 184                 get_object_directory(), pattern);
 185        safe_create_leading_directories(template);
 186        return xmkstemp_mode(template, mode);
 187}
 188
 189int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1)
 190{
 191        int fd;
 192
 193        snprintf(name, namesz, "%s/pack/pack-%s.keep",
 194                 get_object_directory(), sha1_to_hex(sha1));
 195        fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
 196        if (0 <= fd)
 197                return fd;
 198
 199        /* slow path */
 200        safe_create_leading_directories(name);
 201        return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
 202}
 203
 204char *get_index_file(void)
 205{
 206        if (!git_index_file)
 207                setup_git_env();
 208        return git_index_file;
 209}
 210
 211char *get_graft_file(void)
 212{
 213        if (!git_graft_file)
 214                setup_git_env();
 215        return git_graft_file;
 216}
 217
 218int set_git_dir(const char *path)
 219{
 220        if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
 221                return error("Could not set GIT_DIR to '%s'", path);
 222        setup_git_env();
 223        return 0;
 224}
 225
 226const char *get_log_output_encoding(void)
 227{
 228        return git_log_output_encoding ? git_log_output_encoding
 229                : get_commit_output_encoding();
 230}
 231
 232const char *get_commit_output_encoding(void)
 233{
 234        return git_commit_encoding ? git_commit_encoding : "UTF-8";
 235}