t5312: test object deletion code paths in a corrupted repository
[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;
96f1e58f 27int repository_format_version;
1a8f2741 28const char *git_commit_encoding;
3a55602e 29const char *git_log_output_encoding;
94df2506 30int shared_repository = PERM_UMASK;
96f1e58f 31const char *apply_default_whitespace;
86c91f91 32const char *apply_default_ignorewhitespace;
64589a03 33const char *git_attributes_file;
960ccca6
DH
34int zlib_compression_level = Z_BEST_SPEED;
35int core_compression_level;
36int core_compression_seen;
aafe9fba 37int fsync_object_files;
8c82534d
SP
38size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
39size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
4874f544 40size_t delta_base_cache_limit = 96 * 1024 * 1024;
15366280 41unsigned long big_file_threshold = 512 * 1024 * 1024;
872da32d 42const char *pager_program;
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;
ec70f52f 49enum eol core_eol = EOL_UNSET;
21e5ad50 50enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
cf1b7869 51unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
9ed36cfa 52enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
c998ae9b 53enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
f25950f3 54enum push_default_type push_default = PUSH_DEFAULT_UNSPECIFIED;
348df166
JS
55#ifndef OBJECT_CREATION_MODE
56#define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
be66a6c4 57#endif
348df166 58enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
a97a7468 59char *notes_ref_name;
7f3140cd 60int grafts_replace_parents = 1;
08aefc9e 61int core_apply_sparse_checkout;
898eacd8 62int merge_log_config = -1;
76759c7d 63int precomposed_unicode = -1; /* see probe_utf8_pathname_composition() */
e37c1329 64struct startup_info *startup_info;
568508e7 65unsigned long pack_size_limit_cfg;
e1b10391 66
a42643aa
JK
67#ifndef PROTECT_HFS_DEFAULT
68#define PROTECT_HFS_DEFAULT 0
69#endif
70int protect_hfs = PROTECT_HFS_DEFAULT;
71
2b4c6efc
JS
72#ifndef PROTECT_NTFS_DEFAULT
73#define PROTECT_NTFS_DEFAULT 0
74#endif
75int protect_ntfs = PROTECT_NTFS_DEFAULT;
76
eff80a9f
JH
77/*
78 * The character that begins a commented line in user-editable file
79 * that is subject to stripspace.
80 */
81char comment_line_char = '#';
84c9dc2c 82int auto_comment_line_char;
eff80a9f 83
671c9b7e 84/* Parallel index stat data preload? */
299e2987 85int core_preload_index = 1;
671c9b7e 86
e90fdc39
JS
87/* This is set by setup_git_dir_gently() and/or git_default_config() */
88char *git_work_tree_cfg;
19757d80 89static char *work_tree;
e90fdc39 90
a1bea2c1
JT
91static const char *namespace;
92static size_t namespace_len;
93
c5fba16c 94static const char *git_dir;
7f7868ea 95static char *git_object_dir, *git_index_file, *git_graft_file;
c5fba16c 96
48a7c1c4 97/*
2163e5db 98 * Repository-local GIT_* environment variables; see cache.h for details.
48a7c1c4 99 */
2163e5db 100const char * const local_repo_env[] = {
48a7c1c4
GB
101 ALTERNATE_DB_ENVIRONMENT,
102 CONFIG_ENVIRONMENT,
655e8d9c 103 CONFIG_DATA_ENVIRONMENT,
48a7c1c4
GB
104 DB_ENVIRONMENT,
105 GIT_DIR_ENVIRONMENT,
106 GIT_WORK_TREE_ENVIRONMENT,
2cd83d10 107 GIT_IMPLICIT_WORK_TREE_ENVIRONMENT,
48a7c1c4
GB
108 GRAFT_ENVIRONMENT,
109 INDEX_ENVIRONMENT,
110 NO_REPLACE_OBJECTS_ENVIRONMENT,
a6f7f9a3 111 GIT_PREFIX_ENVIRONMENT,
069c0532 112 GIT_SHALLOW_FILE_ENVIRONMENT,
48a7c1c4
GB
113 NULL
114};
115
a1bea2c1
JT
116static char *expand_namespace(const char *raw_namespace)
117{
118 struct strbuf buf = STRBUF_INIT;
119 struct strbuf **components, **c;
120
121 if (!raw_namespace || !*raw_namespace)
122 return xstrdup("");
123
124 strbuf_addstr(&buf, raw_namespace);
125 components = strbuf_split(&buf, '/');
126 strbuf_reset(&buf);
127 for (c = components; *c; c++)
128 if (strcmp((*c)->buf, "/") != 0)
129 strbuf_addf(&buf, "refs/namespaces/%s", (*c)->buf);
130 strbuf_list_free(components);
8d9c5010 131 if (check_refname_format(buf.buf, 0))
a1bea2c1
JT
132 die("bad git namespace path \"%s\"", raw_namespace);
133 strbuf_addch(&buf, '/');
134 return strbuf_detach(&buf, NULL);
135}
136
cb6c38d5
JK
137static char *git_path_from_env(const char *envvar, const char *path)
138{
139 const char *value = getenv(envvar);
140 return value ? xstrdup(value) : git_pathdup("%s", path);
141}
142
e1b10391
LT
143static void setup_git_env(void)
144{
487a2b73 145 const char *gitfile;
069c0532 146 const char *shallow_file;
487a2b73 147
e1b10391
LT
148 git_dir = getenv(GIT_DIR_ENVIRONMENT);
149 if (!git_dir)
150 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
487a2b73
NTND
151 gitfile = read_gitfile(git_dir);
152 git_dir = xstrdup(gitfile ? gitfile : git_dir);
cb6c38d5
JK
153 git_object_dir = git_path_from_env(DB_ENVIRONMENT, "objects");
154 git_index_file = git_path_from_env(INDEX_ENVIRONMENT, "index");
155 git_graft_file = git_path_from_env(GRAFT_ENVIRONMENT, "info/grafts");
6476b38b 156 if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
afc711b8 157 check_replace_refs = 0;
a1bea2c1
JT
158 namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT));
159 namespace_len = strlen(namespace);
069c0532
NTND
160 shallow_file = getenv(GIT_SHALLOW_FILE_ENVIRONMENT);
161 if (shallow_file)
162 set_alternate_shallow_file(shallow_file, 0);
0bee5918
SP
163}
164
7d1864ce 165int is_bare_repository(void)
0bee5918 166{
e90fdc39
JS
167 /* if core.bare is not 'false', let's see if there is a work tree */
168 return is_bare_repository_cfg && !get_git_work_tree();
e1b10391
LT
169}
170
c5fba16c 171const char *get_git_dir(void)
e1b10391
LT
172{
173 if (!git_dir)
174 setup_git_env();
175 return git_dir;
176}
177
a1bea2c1
JT
178const char *get_git_namespace(void)
179{
180 if (!namespace)
181 setup_git_env();
182 return namespace;
183}
184
185const char *strip_namespace(const char *namespaced_ref)
186{
59556548 187 if (!starts_with(namespaced_ref, get_git_namespace()))
a1bea2c1
JT
188 return NULL;
189 return namespaced_ref + namespace_len;
190}
191
19757d80
DB
192static int git_work_tree_initialized;
193
194/*
195 * Note. This works only before you used a work tree. This was added
196 * primarily to support git-clone to work in a new repository it just
197 * created, and is not meant to flip between different work trees.
198 */
199void set_git_work_tree(const char *new_work_tree)
200{
83518360 201 if (git_work_tree_initialized) {
e2a57aac 202 new_work_tree = real_path(new_work_tree);
83518360
NTND
203 if (strcmp(new_work_tree, work_tree))
204 die("internal error: work tree has already been set\n"
205 "Current worktree: %s\nNew worktree: %s",
206 work_tree, new_work_tree);
207 return;
208 }
19757d80 209 git_work_tree_initialized = 1;
e2a57aac 210 work_tree = xstrdup(real_path(new_work_tree));
19757d80
DB
211}
212
e90fdc39
JS
213const char *get_git_work_tree(void)
214{
e90fdc39
JS
215 return work_tree;
216}
217
e1b10391
LT
218char *get_object_directory(void)
219{
220 if (!git_object_dir)
221 setup_git_env();
222 return git_object_dir;
223}
224
463db9b1
JN
225int odb_mkstemp(char *template, size_t limit, const char *pattern)
226{
227 int fd;
228 /*
229 * we let the umask do its job, don't try to be more
230 * restrictive except to remove write permission.
231 */
232 int mode = 0444;
233 snprintf(template, limit, "%s/%s",
234 get_object_directory(), pattern);
235 fd = git_mkstemp_mode(template, mode);
236 if (0 <= fd)
237 return fd;
238
239 /* slow path */
240 /* some mkstemp implementations erase template on failure */
241 snprintf(template, limit, "%s/%s",
242 get_object_directory(), pattern);
243 safe_create_leading_directories(template);
244 return xmkstemp_mode(template, mode);
245}
246
8640d496 247int odb_pack_keep(char *name, size_t namesz, const unsigned char *sha1)
463db9b1
JN
248{
249 int fd;
250
251 snprintf(name, namesz, "%s/pack/pack-%s.keep",
252 get_object_directory(), sha1_to_hex(sha1));
253 fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
254 if (0 <= fd)
255 return fd;
256
257 /* slow path */
258 safe_create_leading_directories(name);
259 return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
260}
261
e1b10391
LT
262char *get_index_file(void)
263{
264 if (!git_index_file)
265 setup_git_env();
266 return git_index_file;
267}
268
269char *get_graft_file(void)
270{
271 if (!git_graft_file)
272 setup_git_env();
273 return git_graft_file;
274}
d7ac12b2
JS
275
276int set_git_dir(const char *path)
277{
278 if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
279 return error("Could not set GIT_DIR to '%s'", path);
280 setup_git_env();
281 return 0;
282}
a6fa5992
PN
283
284const char *get_log_output_encoding(void)
285{
286 return git_log_output_encoding ? git_log_output_encoding
287 : get_commit_output_encoding();
288}
289
290const char *get_commit_output_encoding(void)
291{
292 return git_commit_encoding ? git_commit_encoding : "UTF-8";
293}