add chdir-notify API
[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"
c14c234f 11#include "repository.h"
b2141fc1 12#include "config.h"
a1bea2c1 13#include "refs.h"
273c7032 14#include "fmt-merge-msg.h"
069c0532 15#include "commit.h"
e1b10391 16
e1b10391 17int trust_executable_bit = 1;
1ce4790b 18int trust_ctime = 1;
c08e4d5b 19int check_stat = 1;
78a8d641 20int has_symlinks = 1;
e6c587c7 21int minimum_abbrev = 4, default_abbrev = -1;
0a9b88b7 22int ignore_case;
96f1e58f
DR
23int assume_unchanged;
24int prefer_symlink_refs;
7d1864ce 25int is_bare_repository_cfg = -1; /* unspecified */
1b371f56 26int warn_ambiguous_refs = 1;
25fba78d 27int warn_on_object_refname_ambiguity = 1;
49672f26 28int ref_paranoia = -1;
067fbd41 29int repository_format_precious_objects;
75b97fec 30char *repository_format_partial_clone;
1e1e39b3 31const char *core_partial_clone_filter_default;
1a8f2741 32const char *git_commit_encoding;
3a55602e 33const char *git_log_output_encoding;
96f1e58f 34const char *apply_default_whitespace;
86c91f91 35const char *apply_default_ignorewhitespace;
64589a03 36const char *git_attributes_file;
867ad08a 37const char *git_hooks_path;
960ccca6
DH
38int zlib_compression_level = Z_BEST_SPEED;
39int core_compression_level;
8de7eeb5 40int pack_compression_level = Z_DEFAULT_COMPRESSION;
aafe9fba 41int fsync_object_files;
8c82534d
SP
42size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
43size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
4874f544 44size_t delta_base_cache_limit = 96 * 1024 * 1024;
15366280 45unsigned long big_file_threshold = 512 * 1024 * 1024;
aa086eb8 46int pager_use_color = 1;
ee9601e6 47const char *editor_program;
d3e7da89 48const char *askpass_program;
dfb068be 49const char *excludes_file;
fd6cce9e 50enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
afc711b8 51int check_replace_refs = 1;
58d121b2 52char *git_replace_ref_base;
ec70f52f 53enum eol core_eol = EOL_UNSET;
8462ff43 54int global_conv_flags_eol = CONV_EOL_RNDTRP_WARN;
cf1b7869 55unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
9ed36cfa 56enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
c998ae9b 57enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
f25950f3 58enum push_default_type push_default = PUSH_DEFAULT_UNSPECIFIED;
348df166
JS
59#ifndef OBJECT_CREATION_MODE
60#define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
be66a6c4 61#endif
348df166 62enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
a97a7468 63char *notes_ref_name;
7f3140cd 64int grafts_replace_parents = 1;
08aefc9e 65int core_apply_sparse_checkout;
898eacd8 66int merge_log_config = -1;
76759c7d 67int precomposed_unicode = -1; /* see probe_utf8_pathname_composition() */
568508e7 68unsigned long pack_size_limit_cfg;
f30afdab 69enum hide_dotfiles_type hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
341fb286 70enum log_refs_config log_all_ref_updates = LOG_REFS_UNSET;
e1b10391 71
a42643aa
JK
72#ifndef PROTECT_HFS_DEFAULT
73#define PROTECT_HFS_DEFAULT 0
74#endif
75int protect_hfs = PROTECT_HFS_DEFAULT;
76
2b4c6efc
JS
77#ifndef PROTECT_NTFS_DEFAULT
78#define PROTECT_NTFS_DEFAULT 0
79#endif
80int protect_ntfs = PROTECT_NTFS_DEFAULT;
883e248b 81const char *core_fsmonitor;
2b4c6efc 82
eff80a9f
JH
83/*
84 * The character that begins a commented line in user-editable file
85 * that is subject to stripspace.
86 */
87char comment_line_char = '#';
84c9dc2c 88int auto_comment_line_char;
eff80a9f 89
671c9b7e 90/* Parallel index stat data preload? */
299e2987 91int core_preload_index = 1;
671c9b7e 92
dae6c322
CC
93/*
94 * This is a hack for test programs like test-dump-untracked-cache to
95 * ensure that they do not modify the untracked cache when reading it.
96 * Do not use it otherwise!
97 */
98int ignore_untracked_cache_config;
99
e90fdc39
JS
100/* This is set by setup_git_dir_gently() and/or git_default_config() */
101char *git_work_tree_cfg;
e90fdc39 102
38f3f094 103static char *git_namespace;
a1bea2c1 104
74866d75
BW
105static const char *super_prefix;
106
48a7c1c4 107/*
2163e5db 108 * Repository-local GIT_* environment variables; see cache.h for details.
48a7c1c4 109 */
2163e5db 110const char * const local_repo_env[] = {
48a7c1c4
GB
111 ALTERNATE_DB_ENVIRONMENT,
112 CONFIG_ENVIRONMENT,
655e8d9c 113 CONFIG_DATA_ENVIRONMENT,
48a7c1c4
GB
114 DB_ENVIRONMENT,
115 GIT_DIR_ENVIRONMENT,
116 GIT_WORK_TREE_ENVIRONMENT,
2cd83d10 117 GIT_IMPLICIT_WORK_TREE_ENVIRONMENT,
48a7c1c4
GB
118 GRAFT_ENVIRONMENT,
119 INDEX_ENVIRONMENT,
120 NO_REPLACE_OBJECTS_ENVIRONMENT,
58d121b2 121 GIT_REPLACE_REF_BASE_ENVIRONMENT,
a6f7f9a3 122 GIT_PREFIX_ENVIRONMENT,
74866d75 123 GIT_SUPER_PREFIX_ENVIRONMENT,
069c0532 124 GIT_SHALLOW_FILE_ENVIRONMENT,
c7b3a3d2 125 GIT_COMMON_DIR_ENVIRONMENT,
48a7c1c4
GB
126 NULL
127};
128
a1bea2c1
JT
129static char *expand_namespace(const char *raw_namespace)
130{
131 struct strbuf buf = STRBUF_INIT;
132 struct strbuf **components, **c;
133
134 if (!raw_namespace || !*raw_namespace)
135 return xstrdup("");
136
137 strbuf_addstr(&buf, raw_namespace);
138 components = strbuf_split(&buf, '/');
139 strbuf_reset(&buf);
140 for (c = components; *c; c++)
141 if (strcmp((*c)->buf, "/") != 0)
142 strbuf_addf(&buf, "refs/namespaces/%s", (*c)->buf);
143 strbuf_list_free(components);
8d9c5010 144 if (check_refname_format(buf.buf, 0))
a1bea2c1
JT
145 die("bad git namespace path \"%s\"", raw_namespace);
146 strbuf_addch(&buf, '/');
147 return strbuf_detach(&buf, NULL);
148}
149
73f192c9 150void setup_git_env(void)
e1b10391 151{
069c0532 152 const char *shallow_file;
58d121b2 153 const char *replace_ref_base;
487a2b73 154
6476b38b 155 if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
afc711b8 156 check_replace_refs = 0;
58d121b2 157 replace_ref_base = getenv(GIT_REPLACE_REF_BASE_ENVIRONMENT);
f9b7573f 158 free(git_replace_ref_base);
58d121b2
MH
159 git_replace_ref_base = xstrdup(replace_ref_base ? replace_ref_base
160 : "refs/replace/");
38f3f094
BW
161 free(git_namespace);
162 git_namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT));
069c0532
NTND
163 shallow_file = getenv(GIT_SHALLOW_FILE_ENVIRONMENT);
164 if (shallow_file)
165 set_alternate_shallow_file(shallow_file, 0);
0bee5918
SP
166}
167
7d1864ce 168int is_bare_repository(void)
0bee5918 169{
e90fdc39
JS
170 /* if core.bare is not 'false', let's see if there is a work tree */
171 return is_bare_repository_cfg && !get_git_work_tree();
e1b10391
LT
172}
173
b9605bc4
JK
174int have_git_dir(void)
175{
176 return startup_info->have_repository
c14c234f 177 || the_repository->gitdir;
b9605bc4
JK
178}
179
c5fba16c 180const char *get_git_dir(void)
e1b10391 181{
c14c234f 182 if (!the_repository->gitdir)
73f192c9 183 BUG("git environment hasn't been setup");
c14c234f 184 return the_repository->gitdir;
e1b10391
LT
185}
186
c7b3a3d2
NTND
187const char *get_git_common_dir(void)
188{
c14c234f 189 if (!the_repository->commondir)
73f192c9 190 BUG("git environment hasn't been setup");
c14c234f 191 return the_repository->commondir;
c7b3a3d2
NTND
192}
193
a1bea2c1
JT
194const char *get_git_namespace(void)
195{
38f3f094 196 if (!git_namespace)
73f192c9 197 BUG("git environment hasn't been setup");
38f3f094 198 return git_namespace;
a1bea2c1
JT
199}
200
201const char *strip_namespace(const char *namespaced_ref)
202{
bf08c8cf
BW
203 const char *out;
204 if (skip_prefix(namespaced_ref, get_git_namespace(), &out))
205 return out;
206 return NULL;
a1bea2c1
JT
207}
208
74866d75
BW
209const char *get_super_prefix(void)
210{
211 static int initialized;
212 if (!initialized) {
213 super_prefix = getenv(GIT_SUPER_PREFIX_ENVIRONMENT);
214 initialized = 1;
215 }
216 return super_prefix;
217}
218
19757d80
DB
219static int git_work_tree_initialized;
220
221/*
222 * Note. This works only before you used a work tree. This was added
223 * primarily to support git-clone to work in a new repository it just
224 * created, and is not meant to flip between different work trees.
225 */
226void set_git_work_tree(const char *new_work_tree)
227{
83518360 228 if (git_work_tree_initialized) {
e2a57aac 229 new_work_tree = real_path(new_work_tree);
b4158732 230 if (strcmp(new_work_tree, the_repository->worktree))
83518360
NTND
231 die("internal error: work tree has already been set\n"
232 "Current worktree: %s\nNew worktree: %s",
b4158732 233 the_repository->worktree, new_work_tree);
83518360
NTND
234 return;
235 }
19757d80 236 git_work_tree_initialized = 1;
b4158732 237 repo_set_worktree(the_repository, new_work_tree);
19757d80
DB
238}
239
e90fdc39
JS
240const char *get_git_work_tree(void)
241{
b4158732 242 return the_repository->worktree;
e90fdc39
JS
243}
244
e1b10391
LT
245char *get_object_directory(void)
246{
c14c234f 247 if (!the_repository->objectdir)
73f192c9 248 BUG("git environment hasn't been setup");
c14c234f 249 return the_repository->objectdir;
e1b10391
LT
250}
251
a63b5fca 252int odb_mkstemp(struct strbuf *temp_filename, const char *pattern)
463db9b1
JN
253{
254 int fd;
255 /*
256 * we let the umask do its job, don't try to be more
257 * restrictive except to remove write permission.
258 */
259 int mode = 0444;
a63b5fca
BW
260 git_path_buf(temp_filename, "objects/%s", pattern);
261 fd = git_mkstemp_mode(temp_filename->buf, mode);
463db9b1
JN
262 if (0 <= fd)
263 return fd;
264
265 /* slow path */
a63b5fca
BW
266 /* some mkstemp implementations erase temp_filename on failure */
267 git_path_buf(temp_filename, "objects/%s", pattern);
268 safe_create_leading_directories(temp_filename->buf);
269 return xmkstemp_mode(temp_filename->buf, mode);
463db9b1
JN
270}
271
eaeefc32 272int odb_pack_keep(const char *name)
463db9b1
JN
273{
274 int fd;
275
463db9b1
JN
276 fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
277 if (0 <= fd)
278 return fd;
279
280 /* slow path */
eaeefc32 281 safe_create_leading_directories_const(name);
463db9b1
JN
282 return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
283}
284
e1b10391
LT
285char *get_index_file(void)
286{
c14c234f 287 if (!the_repository->index_file)
73f192c9 288 BUG("git environment hasn't been setup");
c14c234f 289 return the_repository->index_file;
e1b10391
LT
290}
291
292char *get_graft_file(void)
293{
c14c234f 294 if (!the_repository->graft_file)
73f192c9 295 BUG("git environment hasn't been setup");
c14c234f 296 return the_repository->graft_file;
e1b10391 297}
d7ac12b2 298
48988c4d 299void set_git_dir(const char *path)
d7ac12b2
JS
300{
301 if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
48988c4d 302 die("could not set GIT_DIR to '%s'", path);
c14c234f 303 repo_set_gitdir(the_repository, path);
d7ac12b2 304 setup_git_env();
d7ac12b2 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}
7875acb6
JK
317
318static int the_shared_repository = PERM_UMASK;
ae5f6776 319static int need_shared_repository_from_config = 1;
7875acb6
JK
320
321void set_shared_repository(int value)
322{
323 the_shared_repository = value;
ae5f6776 324 need_shared_repository_from_config = 0;
7875acb6
JK
325}
326
327int get_shared_repository(void)
328{
ae5f6776
JK
329 if (need_shared_repository_from_config) {
330 const char *var = "core.sharedrepository";
331 const char *value;
332 if (!git_config_get_value(var, &value))
333 the_shared_repository = git_config_perm(var, value);
334 need_shared_repository_from_config = 0;
335 }
7875acb6
JK
336 return the_shared_repository;
337}
4543926b
JK
338
339void reset_shared_repository(void)
340{
341 need_shared_repository_from_config = 1;
342}
27344d6a
JK
343
344int use_optional_locks(void)
345{
346 return git_env_bool(GIT_OPTIONAL_LOCKS_ENVIRONMENT, 1);
347}
a2cd709d
AR
348
349int print_sha1_ellipsis(void)
350{
351 /*
352 * Determine if the calling environment contains the variable
353 * GIT_PRINT_SHA1_ELLIPSIS set to "yes".
354 */
355 static int cached_result = -1; /* unknown */
356
357 if (cached_result < 0) {
358 const char *v = getenv("GIT_PRINT_SHA1_ELLIPSIS");
359 cached_result = (v && !strcasecmp(v, "yes"));
360 }
361 return cached_result;
362}