push: Provide situational hints for non-fast-forward errors
[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"
e1b10391
LT
13
14char git_default_email[MAX_GITNAME];
15char git_default_name[MAX_GITNAME];
bb1ae3f6 16int user_ident_explicitly_given;
e1b10391 17int trust_executable_bit = 1;
1ce4790b 18int trust_ctime = 1;
78a8d641 19int has_symlinks = 1;
dce96489 20int minimum_abbrev = 4, default_abbrev = 7;
0a9b88b7 21int ignore_case;
96f1e58f
DR
22int assume_unchanged;
23int prefer_symlink_refs;
7d1864ce 24int is_bare_repository_cfg = -1; /* unspecified */
510c5a8e 25int log_all_ref_updates = -1; /* unspecified */
1b371f56 26int warn_ambiguous_refs = 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;
18bdec11 40size_t delta_base_cache_limit = 16 * 1024 * 1024;
15366280 41unsigned long big_file_threshold = 512 * 1024 * 1024;
5f44324d 42const char *log_pack_access;
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;
e1111cef 49int read_replace_refs = 1; /* NEEDSWORK: rename to use_replace_refs */
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;
e37c1329 64struct startup_info *startup_info;
568508e7 65unsigned long pack_size_limit_cfg;
e1b10391 66
671c9b7e
LT
67/* Parallel index stat data preload? */
68int core_preload_index = 0;
69
e90fdc39
JS
70/* This is set by setup_git_dir_gently() and/or git_default_config() */
71char *git_work_tree_cfg;
19757d80 72static char *work_tree;
e90fdc39 73
a1bea2c1
JT
74static const char *namespace;
75static size_t namespace_len;
76
c5fba16c 77static const char *git_dir;
7f7868ea 78static char *git_object_dir, *git_index_file, *git_graft_file;
c5fba16c 79
48a7c1c4
GB
80/*
81 * Repository-local GIT_* environment variables
82 * Remember to update local_repo_env_size in cache.h when
83 * the size of the list changes
84 */
85const char * const local_repo_env[LOCAL_REPO_ENV_SIZE + 1] = {
86 ALTERNATE_DB_ENVIRONMENT,
87 CONFIG_ENVIRONMENT,
655e8d9c 88 CONFIG_DATA_ENVIRONMENT,
48a7c1c4
GB
89 DB_ENVIRONMENT,
90 GIT_DIR_ENVIRONMENT,
91 GIT_WORK_TREE_ENVIRONMENT,
92 GRAFT_ENVIRONMENT,
93 INDEX_ENVIRONMENT,
94 NO_REPLACE_OBJECTS_ENVIRONMENT,
95 NULL
96};
97
a1bea2c1
JT
98static char *expand_namespace(const char *raw_namespace)
99{
100 struct strbuf buf = STRBUF_INIT;
101 struct strbuf **components, **c;
102
103 if (!raw_namespace || !*raw_namespace)
104 return xstrdup("");
105
106 strbuf_addstr(&buf, raw_namespace);
107 components = strbuf_split(&buf, '/');
108 strbuf_reset(&buf);
109 for (c = components; *c; c++)
110 if (strcmp((*c)->buf, "/") != 0)
111 strbuf_addf(&buf, "refs/namespaces/%s", (*c)->buf);
112 strbuf_list_free(components);
8d9c5010 113 if (check_refname_format(buf.buf, 0))
a1bea2c1
JT
114 die("bad git namespace path \"%s\"", raw_namespace);
115 strbuf_addch(&buf, '/');
116 return strbuf_detach(&buf, NULL);
117}
118
e1b10391
LT
119static void setup_git_env(void)
120{
121 git_dir = getenv(GIT_DIR_ENVIRONMENT);
15431ca6 122 git_dir = git_dir ? xstrdup(git_dir) : NULL;
06f3549d 123 if (!git_dir) {
13d6ec91 124 git_dir = read_gitfile(DEFAULT_GIT_DIR_ENVIRONMENT);
06f3549d
JN
125 git_dir = git_dir ? xstrdup(git_dir) : NULL;
126 }
e1b10391
LT
127 if (!git_dir)
128 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
129 git_object_dir = getenv(DB_ENVIRONMENT);
130 if (!git_object_dir) {
131 git_object_dir = xmalloc(strlen(git_dir) + 9);
132 sprintf(git_object_dir, "%s/objects", git_dir);
133 }
e1b10391
LT
134 git_index_file = getenv(INDEX_ENVIRONMENT);
135 if (!git_index_file) {
136 git_index_file = xmalloc(strlen(git_dir) + 7);
137 sprintf(git_index_file, "%s/index", git_dir);
138 }
139 git_graft_file = getenv(GRAFT_ENVIRONMENT);
140 if (!git_graft_file)
a4f34cbb 141 git_graft_file = git_pathdup("info/grafts");
6476b38b
CC
142 if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
143 read_replace_refs = 0;
a1bea2c1
JT
144 namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT));
145 namespace_len = strlen(namespace);
0bee5918
SP
146}
147
7d1864ce 148int is_bare_repository(void)
0bee5918 149{
e90fdc39
JS
150 /* if core.bare is not 'false', let's see if there is a work tree */
151 return is_bare_repository_cfg && !get_git_work_tree();
e1b10391
LT
152}
153
d2b0708e
DP
154int have_git_dir(void)
155{
156 return !!git_dir;
157}
158
c5fba16c 159const char *get_git_dir(void)
e1b10391
LT
160{
161 if (!git_dir)
162 setup_git_env();
163 return git_dir;
164}
165
a1bea2c1
JT
166const char *get_git_namespace(void)
167{
168 if (!namespace)
169 setup_git_env();
170 return namespace;
171}
172
173const char *strip_namespace(const char *namespaced_ref)
174{
175 if (prefixcmp(namespaced_ref, get_git_namespace()) != 0)
176 return NULL;
177 return namespaced_ref + namespace_len;
178}
179
19757d80
DB
180static int git_work_tree_initialized;
181
182/*
183 * Note. This works only before you used a work tree. This was added
184 * primarily to support git-clone to work in a new repository it just
185 * created, and is not meant to flip between different work trees.
186 */
187void set_git_work_tree(const char *new_work_tree)
188{
83518360 189 if (git_work_tree_initialized) {
e2a57aac 190 new_work_tree = real_path(new_work_tree);
83518360
NTND
191 if (strcmp(new_work_tree, work_tree))
192 die("internal error: work tree has already been set\n"
193 "Current worktree: %s\nNew worktree: %s",
194 work_tree, new_work_tree);
195 return;
196 }
19757d80 197 git_work_tree_initialized = 1;
e2a57aac 198 work_tree = xstrdup(real_path(new_work_tree));
19757d80
DB
199}
200
e90fdc39
JS
201const char *get_git_work_tree(void)
202{
e90fdc39
JS
203 return work_tree;
204}
205
e1b10391
LT
206char *get_object_directory(void)
207{
208 if (!git_object_dir)
209 setup_git_env();
210 return git_object_dir;
211}
212
463db9b1
JN
213int odb_mkstemp(char *template, size_t limit, const char *pattern)
214{
215 int fd;
216 /*
217 * we let the umask do its job, don't try to be more
218 * restrictive except to remove write permission.
219 */
220 int mode = 0444;
221 snprintf(template, limit, "%s/%s",
222 get_object_directory(), pattern);
223 fd = git_mkstemp_mode(template, mode);
224 if (0 <= fd)
225 return fd;
226
227 /* slow path */
228 /* some mkstemp implementations erase template on failure */
229 snprintf(template, limit, "%s/%s",
230 get_object_directory(), pattern);
231 safe_create_leading_directories(template);
232 return xmkstemp_mode(template, mode);
233}
234
235int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1)
236{
237 int fd;
238
239 snprintf(name, namesz, "%s/pack/pack-%s.keep",
240 get_object_directory(), sha1_to_hex(sha1));
241 fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
242 if (0 <= fd)
243 return fd;
244
245 /* slow path */
246 safe_create_leading_directories(name);
247 return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
248}
249
e1b10391
LT
250char *get_index_file(void)
251{
252 if (!git_index_file)
253 setup_git_env();
254 return git_index_file;
255}
256
257char *get_graft_file(void)
258{
259 if (!git_graft_file)
260 setup_git_env();
261 return git_graft_file;
262}
d7ac12b2
JS
263
264int set_git_dir(const char *path)
265{
266 if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
267 return error("Could not set GIT_DIR to '%s'", path);
268 setup_git_env();
269 return 0;
270}
a6fa5992
PN
271
272const char *get_log_output_encoding(void)
273{
274 return git_log_output_encoding ? git_log_output_encoding
275 : get_commit_output_encoding();
276}
277
278const char *get_commit_output_encoding(void)
279{
280 return git_commit_encoding ? git_commit_encoding : "UTF-8";
281}