introduce "extensions" form of core.repositoryformatversion
[git/git.git] / environment.c
CommitLineData
e1b10391
LT
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"
a1bea2c1 11#include "refs.h"
273c7032 12#include "fmt-merge-msg.h"
069c0532 13#include "commit.h"
e1b10391 14
e1b10391 15int trust_executable_bit = 1;
1ce4790b 16int trust_ctime = 1;
c08e4d5b 17int check_stat = 1;
78a8d641 18int has_symlinks = 1;
dce96489 19int minimum_abbrev = 4, default_abbrev = 7;
0a9b88b7 20int ignore_case;
96f1e58f
DR
21int assume_unchanged;
22int prefer_symlink_refs;
7d1864ce 23int is_bare_repository_cfg = -1; /* unspecified */
510c5a8e 24int log_all_ref_updates = -1; /* unspecified */
1b371f56 25int warn_ambiguous_refs = 1;
25fba78d 26int warn_on_object_refname_ambiguity = 1;
49672f26 27int ref_paranoia = -1;
96f1e58f 28int repository_format_version;
1a8f2741 29const char *git_commit_encoding;
3a55602e 30const char *git_log_output_encoding;
94df2506 31int shared_repository = PERM_UMASK;
96f1e58f 32const char *apply_default_whitespace;
86c91f91 33const char *apply_default_ignorewhitespace;
64589a03 34const char *git_attributes_file;
960ccca6
DH
35int zlib_compression_level = Z_BEST_SPEED;
36int core_compression_level;
37int core_compression_seen;
aafe9fba 38int fsync_object_files;
8c82534d
SP
39size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
40size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
4874f544 41size_t delta_base_cache_limit = 96 * 1024 * 1024;
15366280 42unsigned long big_file_threshold = 512 * 1024 * 1024;
872da32d 43const char *pager_program;
aa086eb8 44int pager_use_color = 1;
ee9601e6 45const char *editor_program;
d3e7da89 46const char *askpass_program;
dfb068be 47const char *excludes_file;
fd6cce9e 48enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
afc711b8 49int check_replace_refs = 1;
ec70f52f 50enum eol core_eol = EOL_UNSET;
21e5ad50 51enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
cf1b7869 52unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
9ed36cfa 53enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
c998ae9b 54enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
f25950f3 55enum push_default_type push_default = PUSH_DEFAULT_UNSPECIFIED;
348df166
JS
56#ifndef OBJECT_CREATION_MODE
57#define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
be66a6c4 58#endif
348df166 59enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
a97a7468 60char *notes_ref_name;
7f3140cd 61int grafts_replace_parents = 1;
08aefc9e 62int core_apply_sparse_checkout;
898eacd8 63int merge_log_config = -1;
76759c7d 64int precomposed_unicode = -1; /* see probe_utf8_pathname_composition() */
e37c1329 65struct startup_info *startup_info;
568508e7 66unsigned long pack_size_limit_cfg;
e1b10391 67
a42643aa
JK
68#ifndef PROTECT_HFS_DEFAULT
69#define PROTECT_HFS_DEFAULT 0
70#endif
71int protect_hfs = PROTECT_HFS_DEFAULT;
72
2b4c6efc
JS
73#ifndef PROTECT_NTFS_DEFAULT
74#define PROTECT_NTFS_DEFAULT 0
75#endif
76int protect_ntfs = PROTECT_NTFS_DEFAULT;
77
eff80a9f
JH
78/*
79 * The character that begins a commented line in user-editable file
80 * that is subject to stripspace.
81 */
82char comment_line_char = '#';
84c9dc2c 83int auto_comment_line_char;
eff80a9f 84
671c9b7e 85/* Parallel index stat data preload? */
299e2987 86int core_preload_index = 1;
671c9b7e 87
e90fdc39
JS
88/* This is set by setup_git_dir_gently() and/or git_default_config() */
89char *git_work_tree_cfg;
19757d80 90static char *work_tree;
e90fdc39 91
a1bea2c1
JT
92static const char *namespace;
93static size_t namespace_len;
94
c7b3a3d2 95static const char *git_dir, *git_common_dir;
7f7868ea 96static char *git_object_dir, *git_index_file, *git_graft_file;
c7b3a3d2 97int git_db_env, git_index_env, git_graft_env, git_common_dir_env;
c5fba16c 98
48a7c1c4 99/*
2163e5db 100 * Repository-local GIT_* environment variables; see cache.h for details.
48a7c1c4 101 */
2163e5db 102const char * const local_repo_env[] = {
48a7c1c4
GB
103 ALTERNATE_DB_ENVIRONMENT,
104 CONFIG_ENVIRONMENT,
655e8d9c 105 CONFIG_DATA_ENVIRONMENT,
48a7c1c4
GB
106 DB_ENVIRONMENT,
107 GIT_DIR_ENVIRONMENT,
108 GIT_WORK_TREE_ENVIRONMENT,
2cd83d10 109 GIT_IMPLICIT_WORK_TREE_ENVIRONMENT,
48a7c1c4
GB
110 GRAFT_ENVIRONMENT,
111 INDEX_ENVIRONMENT,
112 NO_REPLACE_OBJECTS_ENVIRONMENT,
a6f7f9a3 113 GIT_PREFIX_ENVIRONMENT,
069c0532 114 GIT_SHALLOW_FILE_ENVIRONMENT,
c7b3a3d2 115 GIT_COMMON_DIR_ENVIRONMENT,
48a7c1c4
GB
116 NULL
117};
118
a1bea2c1
JT
119static char *expand_namespace(const char *raw_namespace)
120{
121 struct strbuf buf = STRBUF_INIT;
122 struct strbuf **components, **c;
123
124 if (!raw_namespace || !*raw_namespace)
125 return xstrdup("");
126
127 strbuf_addstr(&buf, raw_namespace);
128 components = strbuf_split(&buf, '/');
129 strbuf_reset(&buf);
130 for (c = components; *c; c++)
131 if (strcmp((*c)->buf, "/") != 0)
132 strbuf_addf(&buf, "refs/namespaces/%s", (*c)->buf);
133 strbuf_list_free(components);
8d9c5010 134 if (check_refname_format(buf.buf, 0))
a1bea2c1
JT
135 die("bad git namespace path \"%s\"", raw_namespace);
136 strbuf_addch(&buf, '/');
137 return strbuf_detach(&buf, NULL);
138}
139
c7b3a3d2
NTND
140static char *git_path_from_env(const char *envvar, const char *git_dir,
141 const char *path, int *fromenv)
cb6c38d5
JK
142{
143 const char *value = getenv(envvar);
557bd833
NTND
144 if (!value) {
145 char *buf = xmalloc(strlen(git_dir) + strlen(path) + 2);
146 sprintf(buf, "%s/%s", git_dir, path);
147 return buf;
148 }
149 if (fromenv)
150 *fromenv = 1;
151 return xstrdup(value);
cb6c38d5
JK
152}
153
e1b10391
LT
154static void setup_git_env(void)
155{
31e26ebc 156 struct strbuf sb = STRBUF_INIT;
487a2b73 157 const char *gitfile;
069c0532 158 const char *shallow_file;
487a2b73 159
e1b10391
LT
160 git_dir = getenv(GIT_DIR_ENVIRONMENT);
161 if (!git_dir)
162 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
487a2b73
NTND
163 gitfile = read_gitfile(git_dir);
164 git_dir = xstrdup(gitfile ? gitfile : git_dir);
31e26ebc 165 if (get_common_dir(&sb, git_dir))
c7b3a3d2 166 git_common_dir_env = 1;
31e26ebc 167 git_common_dir = strbuf_detach(&sb, NULL);
c7b3a3d2
NTND
168 git_object_dir = git_path_from_env(DB_ENVIRONMENT, git_common_dir,
169 "objects", &git_db_env);
170 git_index_file = git_path_from_env(INDEX_ENVIRONMENT, git_dir,
171 "index", &git_index_env);
172 git_graft_file = git_path_from_env(GRAFT_ENVIRONMENT, git_common_dir,
173 "info/grafts", &git_graft_env);
6476b38b 174 if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
afc711b8 175 check_replace_refs = 0;
a1bea2c1
JT
176 namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT));
177 namespace_len = strlen(namespace);
069c0532
NTND
178 shallow_file = getenv(GIT_SHALLOW_FILE_ENVIRONMENT);
179 if (shallow_file)
180 set_alternate_shallow_file(shallow_file, 0);
0bee5918
SP
181}
182
7d1864ce 183int is_bare_repository(void)
0bee5918 184{
e90fdc39
JS
185 /* if core.bare is not 'false', let's see if there is a work tree */
186 return is_bare_repository_cfg && !get_git_work_tree();
e1b10391
LT
187}
188
c5fba16c 189const char *get_git_dir(void)
e1b10391
LT
190{
191 if (!git_dir)
192 setup_git_env();
193 return git_dir;
194}
195
c7b3a3d2
NTND
196const char *get_git_common_dir(void)
197{
198 return git_common_dir;
199}
200
a1bea2c1
JT
201const char *get_git_namespace(void)
202{
203 if (!namespace)
204 setup_git_env();
205 return namespace;
206}
207
208const char *strip_namespace(const char *namespaced_ref)
209{
59556548 210 if (!starts_with(namespaced_ref, get_git_namespace()))
a1bea2c1
JT
211 return NULL;
212 return namespaced_ref + namespace_len;
213}
214
19757d80
DB
215static int git_work_tree_initialized;
216
217/*
218 * Note. This works only before you used a work tree. This was added
219 * primarily to support git-clone to work in a new repository it just
220 * created, and is not meant to flip between different work trees.
221 */
222void set_git_work_tree(const char *new_work_tree)
223{
83518360 224 if (git_work_tree_initialized) {
e2a57aac 225 new_work_tree = real_path(new_work_tree);
83518360
NTND
226 if (strcmp(new_work_tree, work_tree))
227 die("internal error: work tree has already been set\n"
228 "Current worktree: %s\nNew worktree: %s",
229 work_tree, new_work_tree);
230 return;
231 }
19757d80 232 git_work_tree_initialized = 1;
e2a57aac 233 work_tree = xstrdup(real_path(new_work_tree));
19757d80
DB
234}
235
e90fdc39
JS
236const char *get_git_work_tree(void)
237{
e90fdc39
JS
238 return work_tree;
239}
240
e1b10391
LT
241char *get_object_directory(void)
242{
243 if (!git_object_dir)
244 setup_git_env();
245 return git_object_dir;
246}
247
463db9b1
JN
248int odb_mkstemp(char *template, size_t limit, const char *pattern)
249{
250 int fd;
251 /*
252 * we let the umask do its job, don't try to be more
253 * restrictive except to remove write permission.
254 */
255 int mode = 0444;
256 snprintf(template, limit, "%s/%s",
257 get_object_directory(), pattern);
258 fd = git_mkstemp_mode(template, mode);
259 if (0 <= fd)
260 return fd;
261
262 /* slow path */
263 /* some mkstemp implementations erase template on failure */
264 snprintf(template, limit, "%s/%s",
265 get_object_directory(), pattern);
266 safe_create_leading_directories(template);
267 return xmkstemp_mode(template, mode);
268}
269
8640d496 270int odb_pack_keep(char *name, size_t namesz, const unsigned char *sha1)
463db9b1
JN
271{
272 int fd;
273
274 snprintf(name, namesz, "%s/pack/pack-%s.keep",
275 get_object_directory(), sha1_to_hex(sha1));
276 fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
277 if (0 <= fd)
278 return fd;
279
280 /* slow path */
281 safe_create_leading_directories(name);
282 return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
283}
284
e1b10391
LT
285char *get_index_file(void)
286{
287 if (!git_index_file)
288 setup_git_env();
289 return git_index_file;
290}
291
292char *get_graft_file(void)
293{
294 if (!git_graft_file)
295 setup_git_env();
296 return git_graft_file;
297}
d7ac12b2
JS
298
299int set_git_dir(const char *path)
300{
301 if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
302 return error("Could not set GIT_DIR to '%s'", path);
303 setup_git_env();
304 return 0;
305}
a6fa5992
PN
306
307const char *get_log_output_encoding(void)
308{
309 return git_log_output_encoding ? git_log_output_encoding
310 : get_commit_output_encoding();
311}
312
313const char *get_commit_output_encoding(void)
314{
315 return git_commit_encoding ? git_commit_encoding : "UTF-8";
316}