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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 | ||
12 | char git_default_email[MAX_GITNAME]; | |
13 | char git_default_name[MAX_GITNAME]; | |
14 | int user_ident_explicitly_given; | |
15 | int trust_executable_bit = 1; | |
16 | int trust_ctime = 1; | |
17 | int has_symlinks = 1; | |
18 | int ignore_case; | |
19 | int assume_unchanged; | |
20 | int prefer_symlink_refs; | |
21 | int is_bare_repository_cfg = -1; /* unspecified */ | |
22 | int log_all_ref_updates = -1; /* unspecified */ | |
23 | int warn_ambiguous_refs = 1; | |
24 | int repository_format_version; | |
25 | const char *git_commit_encoding; | |
26 | const char *git_log_output_encoding; | |
27 | int shared_repository = PERM_UMASK; | |
28 | const char *apply_default_whitespace; | |
29 | const char *apply_default_ignorewhitespace; | |
30 | int zlib_compression_level = Z_BEST_SPEED; | |
31 | int core_compression_level; | |
32 | int core_compression_seen; | |
33 | int fsync_object_files; | |
34 | size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE; | |
35 | size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT; | |
36 | size_t delta_base_cache_limit = 16 * 1024 * 1024; | |
37 | const char *pager_program; | |
38 | int pager_use_color = 1; | |
39 | const char *editor_program; | |
40 | const char *askpass_program; | |
41 | const char *excludes_file; | |
42 | enum auto_crlf auto_crlf = AUTO_CRLF_FALSE; | |
43 | int read_replace_refs = 1; | |
44 | enum eol eol = EOL_UNSET; | |
45 | enum safe_crlf safe_crlf = SAFE_CRLF_WARN; | |
46 | unsigned whitespace_rule_cfg = WS_DEFAULT_RULE; | |
47 | enum branch_track git_branch_track = BRANCH_TRACK_REMOTE; | |
48 | enum rebase_setup_type autorebase = AUTOREBASE_NEVER; | |
49 | enum push_default_type push_default = PUSH_DEFAULT_MATCHING; | |
50 | #ifndef OBJECT_CREATION_MODE | |
51 | #define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS | |
52 | #endif | |
53 | enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE; | |
54 | char *notes_ref_name; | |
55 | int grafts_replace_parents = 1; | |
56 | int core_apply_sparse_checkout; | |
57 | struct startup_info *startup_info; | |
58 | ||
59 | /* Parallel index stat data preload? */ | |
60 | int core_preload_index = 0; | |
61 | ||
62 | /* This is set by setup_git_dir_gently() and/or git_default_config() */ | |
63 | char *git_work_tree_cfg; | |
64 | static char *work_tree; | |
65 | ||
66 | static const char *git_dir; | |
67 | static 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 | */ | |
74 | const 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 | ||
87 | static 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 | ||
114 | int 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 | ||
120 | int have_git_dir(void) | |
121 | { | |
122 | return !!git_dir; | |
123 | } | |
124 | ||
125 | const char *get_git_dir(void) | |
126 | { | |
127 | if (!git_dir) | |
128 | setup_git_env(); | |
129 | return git_dir; | |
130 | } | |
131 | ||
132 | static 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 | */ | |
139 | void 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 | ||
153 | const char *get_git_work_tree(void) | |
154 | { | |
155 | return work_tree; | |
156 | } | |
157 | ||
158 | char *get_object_directory(void) | |
159 | { | |
160 | if (!git_object_dir) | |
161 | setup_git_env(); | |
162 | return git_object_dir; | |
163 | } | |
164 | ||
165 | int 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 | ||
187 | int 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 | ||
202 | char *get_index_file(void) | |
203 | { | |
204 | if (!git_index_file) | |
205 | setup_git_env(); | |
206 | return git_index_file; | |
207 | } | |
208 | ||
209 | char *get_graft_file(void) | |
210 | { | |
211 | if (!git_graft_file) | |
212 | setup_git_env(); | |
213 | return git_graft_file; | |
214 | } | |
215 | ||
216 | int 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 | ||
224 | const char *get_log_output_encoding(void) | |
225 | { | |
226 | return git_log_output_encoding ? git_log_output_encoding | |
227 | : get_commit_output_encoding(); | |
228 | } | |
229 | ||
230 | const char *get_commit_output_encoding(void) | |
231 | { | |
232 | return git_commit_encoding ? git_commit_encoding : "UTF-8"; | |
233 | } |