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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"
e730b81d 11#include "branch.h"
b9d147fb 12#include "environment.h"
c14c234f 13#include "repository.h"
b2141fc1 14#include "config.h"
a1bea2c1 15#include "refs.h"
273c7032 16#include "fmt-merge-msg.h"
069c0532 17#include "commit.h"
dbbcd44f 18#include "strvec.h"
90c62155 19#include "object-store.h"
8500e0de 20#include "chdir-notify.h"
120ad2b0 21#include "shallow.h"
e1b10391 22
e1b10391 23int trust_executable_bit = 1;
1ce4790b 24int trust_ctime = 1;
c08e4d5b 25int check_stat = 1;
78a8d641 26int has_symlinks = 1;
e6c587c7 27int minimum_abbrev = 4, default_abbrev = -1;
0a9b88b7 28int ignore_case;
96f1e58f
DR
29int assume_unchanged;
30int prefer_symlink_refs;
7d1864ce 31int is_bare_repository_cfg = -1; /* unspecified */
1b371f56 32int warn_ambiguous_refs = 1;
25fba78d 33int warn_on_object_refname_ambiguity = 1;
49672f26 34int ref_paranoia = -1;
067fbd41 35int repository_format_precious_objects;
58b284a2 36int repository_format_worktree_config;
1a8f2741 37const char *git_commit_encoding;
3a55602e 38const char *git_log_output_encoding;
9a53219f
JK
39char *apply_default_whitespace;
40char *apply_default_ignorewhitespace;
64589a03 41const char *git_attributes_file;
867ad08a 42const char *git_hooks_path;
960ccca6
DH
43int zlib_compression_level = Z_BEST_SPEED;
44int core_compression_level;
8de7eeb5 45int pack_compression_level = Z_DEFAULT_COMPRESSION;
aafe9fba 46int fsync_object_files;
8c82534d
SP
47size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
48size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
4874f544 49size_t delta_base_cache_limit = 96 * 1024 * 1024;
15366280 50unsigned long big_file_threshold = 512 * 1024 * 1024;
aa086eb8 51int pager_use_color = 1;
ee9601e6 52const char *editor_program;
d3e7da89 53const char *askpass_program;
dfb068be 54const char *excludes_file;
fd6cce9e 55enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
6ebd1caf 56int read_replace_refs = 1;
58d121b2 57char *git_replace_ref_base;
ec70f52f 58enum eol core_eol = EOL_UNSET;
8462ff43 59int global_conv_flags_eol = CONV_EOL_RNDTRP_WARN;
e92d6225 60char *check_roundtrip_encoding = "SHIFT-JIS";
cf1b7869 61unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
9ed36cfa 62enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
c998ae9b 63enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
f25950f3 64enum push_default_type push_default = PUSH_DEFAULT_UNSPECIFIED;
348df166
JS
65#ifndef OBJECT_CREATION_MODE
66#define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
be66a6c4 67#endif
348df166 68enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
a97a7468 69char *notes_ref_name;
7f3140cd 70int grafts_replace_parents = 1;
08aefc9e 71int core_apply_sparse_checkout;
879321eb 72int core_sparse_checkout_cone;
898eacd8 73int merge_log_config = -1;
76759c7d 74int precomposed_unicode = -1; /* see probe_utf8_pathname_composition() */
568508e7 75unsigned long pack_size_limit_cfg;
341fb286 76enum log_refs_config log_all_ref_updates = LOG_REFS_UNSET;
e1b10391 77
a42643aa
JK
78#ifndef PROTECT_HFS_DEFAULT
79#define PROTECT_HFS_DEFAULT 0
80#endif
81int protect_hfs = PROTECT_HFS_DEFAULT;
82
2b4c6efc 83#ifndef PROTECT_NTFS_DEFAULT
9102f958 84#define PROTECT_NTFS_DEFAULT 1
2b4c6efc
JS
85#endif
86int protect_ntfs = PROTECT_NTFS_DEFAULT;
883e248b 87const char *core_fsmonitor;
2b4c6efc 88
eff80a9f
JH
89/*
90 * The character that begins a commented line in user-editable file
91 * that is subject to stripspace.
92 */
93char comment_line_char = '#';
84c9dc2c 94int auto_comment_line_char;
eff80a9f 95
671c9b7e 96/* Parallel index stat data preload? */
299e2987 97int core_preload_index = 1;
671c9b7e 98
dae6c322
CC
99/*
100 * This is a hack for test programs like test-dump-untracked-cache to
101 * ensure that they do not modify the untracked cache when reading it.
102 * Do not use it otherwise!
103 */
104int ignore_untracked_cache_config;
105
e90fdc39
JS
106/* This is set by setup_git_dir_gently() and/or git_default_config() */
107char *git_work_tree_cfg;
e90fdc39 108
38f3f094 109static char *git_namespace;
a1bea2c1 110
8aac6903 111static char *super_prefix;
74866d75 112
48a7c1c4 113/*
2163e5db 114 * Repository-local GIT_* environment variables; see cache.h for details.
48a7c1c4 115 */
2163e5db 116const char * const local_repo_env[] = {
48a7c1c4
GB
117 ALTERNATE_DB_ENVIRONMENT,
118 CONFIG_ENVIRONMENT,
655e8d9c 119 CONFIG_DATA_ENVIRONMENT,
d8d77153 120 CONFIG_COUNT_ENVIRONMENT,
48a7c1c4
GB
121 DB_ENVIRONMENT,
122 GIT_DIR_ENVIRONMENT,
123 GIT_WORK_TREE_ENVIRONMENT,
2cd83d10 124 GIT_IMPLICIT_WORK_TREE_ENVIRONMENT,
48a7c1c4
GB
125 GRAFT_ENVIRONMENT,
126 INDEX_ENVIRONMENT,
127 NO_REPLACE_OBJECTS_ENVIRONMENT,
58d121b2 128 GIT_REPLACE_REF_BASE_ENVIRONMENT,
a6f7f9a3 129 GIT_PREFIX_ENVIRONMENT,
74866d75 130 GIT_SUPER_PREFIX_ENVIRONMENT,
069c0532 131 GIT_SHALLOW_FILE_ENVIRONMENT,
c7b3a3d2 132 GIT_COMMON_DIR_ENVIRONMENT,
48a7c1c4
GB
133 NULL
134};
135
a1bea2c1
JT
136static char *expand_namespace(const char *raw_namespace)
137{
138 struct strbuf buf = STRBUF_INIT;
139 struct strbuf **components, **c;
140
141 if (!raw_namespace || !*raw_namespace)
142 return xstrdup("");
143
144 strbuf_addstr(&buf, raw_namespace);
145 components = strbuf_split(&buf, '/');
146 strbuf_reset(&buf);
147 for (c = components; *c; c++)
148 if (strcmp((*c)->buf, "/") != 0)
149 strbuf_addf(&buf, "refs/namespaces/%s", (*c)->buf);
150 strbuf_list_free(components);
8d9c5010 151 if (check_refname_format(buf.buf, 0))
cbb46ca7 152 die(_("bad git namespace path \"%s\""), raw_namespace);
a1bea2c1
JT
153 strbuf_addch(&buf, '/');
154 return strbuf_detach(&buf, NULL);
155}
156
b9d147fb 157const char *getenv_safe(struct strvec *argv, const char *name)
357a03eb
NTND
158{
159 const char *value = getenv(name);
160
161 if (!value)
162 return NULL;
163
ef8d7ac4 164 strvec_push(argv, value);
d70a9eb6 165 return argv->v[argv->nr - 1];
357a03eb
NTND
166}
167
168void setup_git_env(const char *git_dir)
e1b10391 169{
069c0532 170 const char *shallow_file;
58d121b2 171 const char *replace_ref_base;
357a03eb 172 struct set_gitdir_args args = { NULL };
ef8d7ac4 173 struct strvec to_free = STRVEC_INIT;
357a03eb
NTND
174
175 args.commondir = getenv_safe(&to_free, GIT_COMMON_DIR_ENVIRONMENT);
176 args.object_dir = getenv_safe(&to_free, DB_ENVIRONMENT);
177 args.graft_file = getenv_safe(&to_free, GRAFT_ENVIRONMENT);
178 args.index_file = getenv_safe(&to_free, INDEX_ENVIRONMENT);
7bc0dcaa 179 args.alternate_db = getenv_safe(&to_free, ALTERNATE_DB_ENVIRONMENT);
357a03eb 180 repo_set_gitdir(the_repository, git_dir, &args);
ef8d7ac4 181 strvec_clear(&to_free);
487a2b73 182
6476b38b 183 if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
6ebd1caf 184 read_replace_refs = 0;
58d121b2 185 replace_ref_base = getenv(GIT_REPLACE_REF_BASE_ENVIRONMENT);
f9b7573f 186 free(git_replace_ref_base);
58d121b2
MH
187 git_replace_ref_base = xstrdup(replace_ref_base ? replace_ref_base
188 : "refs/replace/");
38f3f094
BW
189 free(git_namespace);
190 git_namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT));
069c0532
NTND
191 shallow_file = getenv(GIT_SHALLOW_FILE_ENVIRONMENT);
192 if (shallow_file)
6a2df51c 193 set_alternate_shallow_file(the_repository, shallow_file, 0);
0bee5918
SP
194}
195
7d1864ce 196int is_bare_repository(void)
0bee5918 197{
e90fdc39
JS
198 /* if core.bare is not 'false', let's see if there is a work tree */
199 return is_bare_repository_cfg && !get_git_work_tree();
e1b10391
LT
200}
201
b9605bc4
JK
202int have_git_dir(void)
203{
204 return startup_info->have_repository
c14c234f 205 || the_repository->gitdir;
b9605bc4
JK
206}
207
c5fba16c 208const char *get_git_dir(void)
e1b10391 209{
c14c234f 210 if (!the_repository->gitdir)
73f192c9 211 BUG("git environment hasn't been setup");
c14c234f 212 return the_repository->gitdir;
e1b10391
LT
213}
214
c7b3a3d2
NTND
215const char *get_git_common_dir(void)
216{
c14c234f 217 if (!the_repository->commondir)
73f192c9 218 BUG("git environment hasn't been setup");
c14c234f 219 return the_repository->commondir;
c7b3a3d2
NTND
220}
221
a1bea2c1
JT
222const char *get_git_namespace(void)
223{
38f3f094 224 if (!git_namespace)
73f192c9 225 BUG("git environment hasn't been setup");
38f3f094 226 return git_namespace;
a1bea2c1
JT
227}
228
229const char *strip_namespace(const char *namespaced_ref)
230{
bf08c8cf
BW
231 const char *out;
232 if (skip_prefix(namespaced_ref, get_git_namespace(), &out))
233 return out;
234 return NULL;
a1bea2c1
JT
235}
236
74866d75
BW
237const char *get_super_prefix(void)
238{
239 static int initialized;
240 if (!initialized) {
8aac6903 241 super_prefix = xstrdup_or_null(getenv(GIT_SUPER_PREFIX_ENVIRONMENT));
74866d75
BW
242 initialized = 1;
243 }
244 return super_prefix;
245}
246
19757d80
DB
247static int git_work_tree_initialized;
248
249/*
250 * Note. This works only before you used a work tree. This was added
251 * primarily to support git-clone to work in a new repository it just
252 * created, and is not meant to flip between different work trees.
253 */
254void set_git_work_tree(const char *new_work_tree)
255{
83518360 256 if (git_work_tree_initialized) {
14c3dd81
AH
257 struct strbuf realpath = STRBUF_INIT;
258
3d7747e3
AM
259 strbuf_realpath(&realpath, new_work_tree, 1);
260 new_work_tree = realpath.buf;
b4158732 261 if (strcmp(new_work_tree, the_repository->worktree))
83518360
NTND
262 die("internal error: work tree has already been set\n"
263 "Current worktree: %s\nNew worktree: %s",
b4158732 264 the_repository->worktree, new_work_tree);
14c3dd81 265 strbuf_release(&realpath);
83518360
NTND
266 return;
267 }
19757d80 268 git_work_tree_initialized = 1;
b4158732 269 repo_set_worktree(the_repository, new_work_tree);
19757d80
DB
270}
271
e90fdc39
JS
272const char *get_git_work_tree(void)
273{
b4158732 274 return the_repository->worktree;
e90fdc39
JS
275}
276
e1b10391
LT
277char *get_object_directory(void)
278{
f0eaf638 279 if (!the_repository->objects->odb)
73f192c9 280 BUG("git environment hasn't been setup");
f0eaf638 281 return the_repository->objects->odb->path;
e1b10391
LT
282}
283
a63b5fca 284int odb_mkstemp(struct strbuf *temp_filename, const char *pattern)
463db9b1
JN
285{
286 int fd;
287 /*
288 * we let the umask do its job, don't try to be more
289 * restrictive except to remove write permission.
290 */
291 int mode = 0444;
a63b5fca
BW
292 git_path_buf(temp_filename, "objects/%s", pattern);
293 fd = git_mkstemp_mode(temp_filename->buf, mode);
463db9b1
JN
294 if (0 <= fd)
295 return fd;
296
297 /* slow path */
a63b5fca
BW
298 /* some mkstemp implementations erase temp_filename on failure */
299 git_path_buf(temp_filename, "objects/%s", pattern);
300 safe_create_leading_directories(temp_filename->buf);
301 return xmkstemp_mode(temp_filename->buf, mode);
463db9b1
JN
302}
303
eaeefc32 304int odb_pack_keep(const char *name)
463db9b1
JN
305{
306 int fd;
307
463db9b1
JN
308 fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
309 if (0 <= fd)
310 return fd;
311
312 /* slow path */
eaeefc32 313 safe_create_leading_directories_const(name);
463db9b1
JN
314 return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
315}
316
e1b10391
LT
317char *get_index_file(void)
318{
c14c234f 319 if (!the_repository->index_file)
73f192c9 320 BUG("git environment hasn't been setup");
c14c234f 321 return the_repository->index_file;
e1b10391
LT
322}
323
0437a2e3 324char *get_graft_file(struct repository *r)
e1b10391 325{
0437a2e3 326 if (!r->graft_file)
73f192c9 327 BUG("git environment hasn't been setup");
0437a2e3 328 return r->graft_file;
e1b10391 329}
d7ac12b2 330
8500e0de 331static void set_git_dir_1(const char *path)
d7ac12b2
JS
332{
333 if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
cbb46ca7 334 die(_("could not set GIT_DIR to '%s'"), path);
357a03eb 335 setup_git_env(path);
d7ac12b2 336}
a6fa5992 337
8500e0de
JK
338static void update_relative_gitdir(const char *name,
339 const char *old_cwd,
340 const char *new_cwd,
341 void *data)
342{
343 char *path = reparent_relative_path(old_cwd, new_cwd, get_git_dir());
344 trace_printf_key(&trace_setup_key,
345 "setup: move $GIT_DIR to '%s'",
346 path);
347 set_git_dir_1(path);
348 free(path);
349}
350
0915a5b4 351void set_git_dir(const char *path, int make_realpath)
8500e0de 352{
0915a5b4
AM
353 struct strbuf realpath = STRBUF_INIT;
354
355 if (make_realpath) {
356 strbuf_realpath(&realpath, path, 1);
357 path = realpath.buf;
358 }
359
8500e0de
JK
360 set_git_dir_1(path);
361 if (!is_absolute_path(path))
362 chdir_notify_register(NULL, update_relative_gitdir, NULL);
0915a5b4
AM
363
364 strbuf_release(&realpath);
d7ac12b2 365}
a6fa5992
PN
366
367const char *get_log_output_encoding(void)
368{
369 return git_log_output_encoding ? git_log_output_encoding
370 : get_commit_output_encoding();
371}
372
373const char *get_commit_output_encoding(void)
374{
375 return git_commit_encoding ? git_commit_encoding : "UTF-8";
376}
7875acb6
JK
377
378static int the_shared_repository = PERM_UMASK;
ae5f6776 379static int need_shared_repository_from_config = 1;
7875acb6
JK
380
381void set_shared_repository(int value)
382{
383 the_shared_repository = value;
ae5f6776 384 need_shared_repository_from_config = 0;
7875acb6
JK
385}
386
387int get_shared_repository(void)
388{
ae5f6776
JK
389 if (need_shared_repository_from_config) {
390 const char *var = "core.sharedrepository";
391 const char *value;
392 if (!git_config_get_value(var, &value))
393 the_shared_repository = git_config_perm(var, value);
394 need_shared_repository_from_config = 0;
395 }
7875acb6
JK
396 return the_shared_repository;
397}
4543926b
JK
398
399void reset_shared_repository(void)
400{
401 need_shared_repository_from_config = 1;
402}
27344d6a
JK
403
404int use_optional_locks(void)
405{
406 return git_env_bool(GIT_OPTIONAL_LOCKS_ENVIRONMENT, 1);
407}
a2cd709d
AR
408
409int print_sha1_ellipsis(void)
410{
411 /*
412 * Determine if the calling environment contains the variable
413 * GIT_PRINT_SHA1_ELLIPSIS set to "yes".
414 */
415 static int cached_result = -1; /* unknown */
416
417 if (cached_result < 0) {
418 const char *v = getenv("GIT_PRINT_SHA1_ELLIPSIS");
419 cached_result = (v && !strcasecmp(v, "yes"));
420 }
421 return cached_result;
422}