Merge branches 'bw/ls-files-sans-the-index' and 'bw/config-h' into bw/repo-object
[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"
b2141fc1 11#include "config.h"
a1bea2c1 12#include "refs.h"
273c7032 13#include "fmt-merge-msg.h"
069c0532 14#include "commit.h"
e1b10391 15
e1b10391 16int trust_executable_bit = 1;
1ce4790b 17int trust_ctime = 1;
c08e4d5b 18int check_stat = 1;
78a8d641 19int has_symlinks = 1;
e6c587c7 20int minimum_abbrev = 4, default_abbrev = -1;
0a9b88b7 21int ignore_case;
96f1e58f
DR
22int assume_unchanged;
23int prefer_symlink_refs;
7d1864ce 24int is_bare_repository_cfg = -1; /* unspecified */
1b371f56 25int warn_ambiguous_refs = 1;
25fba78d 26int warn_on_object_refname_ambiguity = 1;
49672f26 27int ref_paranoia = -1;
067fbd41 28int repository_format_precious_objects;
1a8f2741 29const char *git_commit_encoding;
3a55602e 30const char *git_log_output_encoding;
96f1e58f 31const char *apply_default_whitespace;
86c91f91 32const char *apply_default_ignorewhitespace;
64589a03 33const char *git_attributes_file;
867ad08a 34const char *git_hooks_path;
960ccca6
DH
35int zlib_compression_level = Z_BEST_SPEED;
36int core_compression_level;
8de7eeb5 37int pack_compression_level = Z_DEFAULT_COMPRESSION;
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;
aa086eb8 43int pager_use_color = 1;
ee9601e6 44const char *editor_program;
d3e7da89 45const char *askpass_program;
dfb068be 46const char *excludes_file;
fd6cce9e 47enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
afc711b8 48int check_replace_refs = 1;
58d121b2 49char *git_replace_ref_base;
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() */
568508e7 65unsigned long pack_size_limit_cfg;
f30afdab 66enum hide_dotfiles_type hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
341fb286 67enum log_refs_config log_all_ref_updates = LOG_REFS_UNSET;
e1b10391 68
a42643aa
JK
69#ifndef PROTECT_HFS_DEFAULT
70#define PROTECT_HFS_DEFAULT 0
71#endif
72int protect_hfs = PROTECT_HFS_DEFAULT;
73
2b4c6efc
JS
74#ifndef PROTECT_NTFS_DEFAULT
75#define PROTECT_NTFS_DEFAULT 0
76#endif
77int protect_ntfs = PROTECT_NTFS_DEFAULT;
78
eff80a9f
JH
79/*
80 * The character that begins a commented line in user-editable file
81 * that is subject to stripspace.
82 */
83char comment_line_char = '#';
84c9dc2c 84int auto_comment_line_char;
eff80a9f 85
671c9b7e 86/* Parallel index stat data preload? */
299e2987 87int core_preload_index = 1;
671c9b7e 88
dae6c322
CC
89/*
90 * This is a hack for test programs like test-dump-untracked-cache to
91 * ensure that they do not modify the untracked cache when reading it.
92 * Do not use it otherwise!
93 */
94int ignore_untracked_cache_config;
95
e90fdc39
JS
96/* This is set by setup_git_dir_gently() and/or git_default_config() */
97char *git_work_tree_cfg;
19757d80 98static char *work_tree;
e90fdc39 99
a1bea2c1
JT
100static const char *namespace;
101static size_t namespace_len;
102
74866d75
BW
103static const char *super_prefix;
104
c7b3a3d2 105static const char *git_dir, *git_common_dir;
7f7868ea 106static char *git_object_dir, *git_index_file, *git_graft_file;
c7b3a3d2 107int git_db_env, git_index_env, git_graft_env, git_common_dir_env;
c5fba16c 108
48a7c1c4 109/*
2163e5db 110 * Repository-local GIT_* environment variables; see cache.h for details.
48a7c1c4 111 */
2163e5db 112const char * const local_repo_env[] = {
48a7c1c4
GB
113 ALTERNATE_DB_ENVIRONMENT,
114 CONFIG_ENVIRONMENT,
655e8d9c 115 CONFIG_DATA_ENVIRONMENT,
48a7c1c4
GB
116 DB_ENVIRONMENT,
117 GIT_DIR_ENVIRONMENT,
118 GIT_WORK_TREE_ENVIRONMENT,
2cd83d10 119 GIT_IMPLICIT_WORK_TREE_ENVIRONMENT,
48a7c1c4
GB
120 GRAFT_ENVIRONMENT,
121 INDEX_ENVIRONMENT,
122 NO_REPLACE_OBJECTS_ENVIRONMENT,
58d121b2 123 GIT_REPLACE_REF_BASE_ENVIRONMENT,
a6f7f9a3 124 GIT_PREFIX_ENVIRONMENT,
74866d75 125 GIT_SUPER_PREFIX_ENVIRONMENT,
069c0532 126 GIT_SHALLOW_FILE_ENVIRONMENT,
c7b3a3d2 127 GIT_COMMON_DIR_ENVIRONMENT,
48a7c1c4
GB
128 NULL
129};
130
a1bea2c1
JT
131static char *expand_namespace(const char *raw_namespace)
132{
133 struct strbuf buf = STRBUF_INIT;
134 struct strbuf **components, **c;
135
136 if (!raw_namespace || !*raw_namespace)
137 return xstrdup("");
138
139 strbuf_addstr(&buf, raw_namespace);
140 components = strbuf_split(&buf, '/');
141 strbuf_reset(&buf);
142 for (c = components; *c; c++)
143 if (strcmp((*c)->buf, "/") != 0)
144 strbuf_addf(&buf, "refs/namespaces/%s", (*c)->buf);
145 strbuf_list_free(components);
8d9c5010 146 if (check_refname_format(buf.buf, 0))
a1bea2c1
JT
147 die("bad git namespace path \"%s\"", raw_namespace);
148 strbuf_addch(&buf, '/');
149 return strbuf_detach(&buf, NULL);
150}
151
c7b3a3d2
NTND
152static char *git_path_from_env(const char *envvar, const char *git_dir,
153 const char *path, int *fromenv)
cb6c38d5
JK
154{
155 const char *value = getenv(envvar);
75faa45a
JK
156 if (!value)
157 return xstrfmt("%s/%s", git_dir, path);
557bd833
NTND
158 if (fromenv)
159 *fromenv = 1;
160 return xstrdup(value);
cb6c38d5
JK
161}
162
e1b10391
LT
163static void setup_git_env(void)
164{
31e26ebc 165 struct strbuf sb = STRBUF_INIT;
487a2b73 166 const char *gitfile;
069c0532 167 const char *shallow_file;
58d121b2 168 const char *replace_ref_base;
487a2b73 169
e1b10391 170 git_dir = getenv(GIT_DIR_ENVIRONMENT);
b1ef400e
JK
171 if (!git_dir) {
172 if (!startup_info->have_repository)
588a538a 173 BUG("setup_git_env called without repository");
e1b10391 174 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
b1ef400e 175 }
487a2b73
NTND
176 gitfile = read_gitfile(git_dir);
177 git_dir = xstrdup(gitfile ? gitfile : git_dir);
31e26ebc 178 if (get_common_dir(&sb, git_dir))
c7b3a3d2 179 git_common_dir_env = 1;
31e26ebc 180 git_common_dir = strbuf_detach(&sb, NULL);
c7b3a3d2
NTND
181 git_object_dir = git_path_from_env(DB_ENVIRONMENT, git_common_dir,
182 "objects", &git_db_env);
183 git_index_file = git_path_from_env(INDEX_ENVIRONMENT, git_dir,
184 "index", &git_index_env);
185 git_graft_file = git_path_from_env(GRAFT_ENVIRONMENT, git_common_dir,
186 "info/grafts", &git_graft_env);
6476b38b 187 if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
afc711b8 188 check_replace_refs = 0;
58d121b2
MH
189 replace_ref_base = getenv(GIT_REPLACE_REF_BASE_ENVIRONMENT);
190 git_replace_ref_base = xstrdup(replace_ref_base ? replace_ref_base
191 : "refs/replace/");
a1bea2c1
JT
192 namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT));
193 namespace_len = strlen(namespace);
069c0532
NTND
194 shallow_file = getenv(GIT_SHALLOW_FILE_ENVIRONMENT);
195 if (shallow_file)
196 set_alternate_shallow_file(shallow_file, 0);
0bee5918
SP
197}
198
7d1864ce 199int is_bare_repository(void)
0bee5918 200{
e90fdc39
JS
201 /* if core.bare is not 'false', let's see if there is a work tree */
202 return is_bare_repository_cfg && !get_git_work_tree();
e1b10391
LT
203}
204
b9605bc4
JK
205int have_git_dir(void)
206{
207 return startup_info->have_repository
208 || git_dir
209 || getenv(GIT_DIR_ENVIRONMENT);
210}
211
c5fba16c 212const char *get_git_dir(void)
e1b10391
LT
213{
214 if (!git_dir)
215 setup_git_env();
216 return git_dir;
217}
218
c7b3a3d2
NTND
219const char *get_git_common_dir(void)
220{
a560d870
NTND
221 if (!git_dir)
222 setup_git_env();
c7b3a3d2
NTND
223 return git_common_dir;
224}
225
a1bea2c1
JT
226const char *get_git_namespace(void)
227{
228 if (!namespace)
229 setup_git_env();
230 return namespace;
231}
232
233const char *strip_namespace(const char *namespaced_ref)
234{
59556548 235 if (!starts_with(namespaced_ref, get_git_namespace()))
a1bea2c1
JT
236 return NULL;
237 return namespaced_ref + namespace_len;
238}
239
74866d75
BW
240const char *get_super_prefix(void)
241{
242 static int initialized;
243 if (!initialized) {
244 super_prefix = getenv(GIT_SUPER_PREFIX_ENVIRONMENT);
245 initialized = 1;
246 }
247 return super_prefix;
248}
249
19757d80
DB
250static int git_work_tree_initialized;
251
252/*
253 * Note. This works only before you used a work tree. This was added
254 * primarily to support git-clone to work in a new repository it just
255 * created, and is not meant to flip between different work trees.
256 */
257void set_git_work_tree(const char *new_work_tree)
258{
83518360 259 if (git_work_tree_initialized) {
e2a57aac 260 new_work_tree = real_path(new_work_tree);
83518360
NTND
261 if (strcmp(new_work_tree, work_tree))
262 die("internal error: work tree has already been set\n"
263 "Current worktree: %s\nNew worktree: %s",
264 work_tree, new_work_tree);
265 return;
266 }
19757d80 267 git_work_tree_initialized = 1;
ce83eadd 268 work_tree = real_pathdup(new_work_tree, 1);
19757d80
DB
269}
270
e90fdc39
JS
271const char *get_git_work_tree(void)
272{
e90fdc39
JS
273 return work_tree;
274}
275
e1b10391
LT
276char *get_object_directory(void)
277{
278 if (!git_object_dir)
279 setup_git_env();
280 return git_object_dir;
281}
282
594fa999 283int odb_mkstemp(struct strbuf *template, const char *pattern)
463db9b1
JN
284{
285 int fd;
286 /*
287 * we let the umask do its job, don't try to be more
288 * restrictive except to remove write permission.
289 */
290 int mode = 0444;
4aa7d75e 291 git_path_buf(template, "objects/%s", pattern);
594fa999 292 fd = git_mkstemp_mode(template->buf, mode);
463db9b1
JN
293 if (0 <= fd)
294 return fd;
295
296 /* slow path */
297 /* some mkstemp implementations erase template on failure */
4aa7d75e 298 git_path_buf(template, "objects/%s", pattern);
594fa999
JK
299 safe_create_leading_directories(template->buf);
300 return xmkstemp_mode(template->buf, mode);
463db9b1
JN
301}
302
eaeefc32 303int odb_pack_keep(const char *name)
463db9b1
JN
304{
305 int fd;
306
463db9b1
JN
307 fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
308 if (0 <= fd)
309 return fd;
310
311 /* slow path */
eaeefc32 312 safe_create_leading_directories_const(name);
463db9b1
JN
313 return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
314}
315
e1b10391
LT
316char *get_index_file(void)
317{
318 if (!git_index_file)
319 setup_git_env();
320 return git_index_file;
321}
322
323char *get_graft_file(void)
324{
325 if (!git_graft_file)
326 setup_git_env();
327 return git_graft_file;
328}
d7ac12b2
JS
329
330int set_git_dir(const char *path)
331{
332 if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
333 return error("Could not set GIT_DIR to '%s'", path);
334 setup_git_env();
335 return 0;
336}
a6fa5992
PN
337
338const char *get_log_output_encoding(void)
339{
340 return git_log_output_encoding ? git_log_output_encoding
341 : get_commit_output_encoding();
342}
343
344const char *get_commit_output_encoding(void)
345{
346 return git_commit_encoding ? git_commit_encoding : "UTF-8";
347}
7875acb6
JK
348
349static int the_shared_repository = PERM_UMASK;
ae5f6776 350static int need_shared_repository_from_config = 1;
7875acb6
JK
351
352void set_shared_repository(int value)
353{
354 the_shared_repository = value;
ae5f6776 355 need_shared_repository_from_config = 0;
7875acb6
JK
356}
357
358int get_shared_repository(void)
359{
ae5f6776
JK
360 if (need_shared_repository_from_config) {
361 const char *var = "core.sharedrepository";
362 const char *value;
363 if (!git_config_get_value(var, &value))
364 the_shared_repository = git_config_perm(var, value);
365 need_shared_repository_from_config = 0;
366 }
7875acb6
JK
367 return the_shared_repository;
368}
4543926b
JK
369
370void reset_shared_repository(void)
371{
372 need_shared_repository_from_config = 1;
373}