Git 1.7.6
[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"
11
12char git_default_email[MAX_GITNAME];
13char git_default_name[MAX_GITNAME];
bb1ae3f6 14int user_ident_explicitly_given;
e1b10391 15int trust_executable_bit = 1;
1ce4790b 16int trust_ctime = 1;
78a8d641 17int has_symlinks = 1;
dce96489 18int minimum_abbrev = 4, default_abbrev = 7;
0a9b88b7 19int ignore_case;
96f1e58f
DR
20int assume_unchanged;
21int prefer_symlink_refs;
7d1864ce 22int is_bare_repository_cfg = -1; /* unspecified */
510c5a8e 23int log_all_ref_updates = -1; /* unspecified */
1b371f56 24int warn_ambiguous_refs = 1;
96f1e58f 25int repository_format_version;
1a8f2741 26const char *git_commit_encoding;
3a55602e 27const char *git_log_output_encoding;
94df2506 28int shared_repository = PERM_UMASK;
96f1e58f 29const char *apply_default_whitespace;
86c91f91 30const char *apply_default_ignorewhitespace;
960ccca6
DH
31int zlib_compression_level = Z_BEST_SPEED;
32int core_compression_level;
33int core_compression_seen;
aafe9fba 34int fsync_object_files;
8c82534d
SP
35size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
36size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
18bdec11 37size_t delta_base_cache_limit = 16 * 1024 * 1024;
15366280 38unsigned long big_file_threshold = 512 * 1024 * 1024;
872da32d 39const char *pager_program;
aa086eb8 40int pager_use_color = 1;
ee9601e6 41const char *editor_program;
d3e7da89 42const char *askpass_program;
dfb068be 43const char *excludes_file;
fd6cce9e 44enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
e1111cef 45int read_replace_refs = 1; /* NEEDSWORK: rename to use_replace_refs */
ec70f52f 46enum eol core_eol = EOL_UNSET;
21e5ad50 47enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
cf1b7869 48unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
9ed36cfa 49enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
c998ae9b 50enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
bba0fd22 51enum push_default_type push_default = PUSH_DEFAULT_MATCHING;
348df166
JS
52#ifndef OBJECT_CREATION_MODE
53#define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
be66a6c4 54#endif
348df166 55enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
a97a7468 56char *notes_ref_name;
7f3140cd 57int grafts_replace_parents = 1;
08aefc9e 58int core_apply_sparse_checkout;
e37c1329 59struct startup_info *startup_info;
e1b10391 60
671c9b7e
LT
61/* Parallel index stat data preload? */
62int core_preload_index = 0;
63
e90fdc39
JS
64/* This is set by setup_git_dir_gently() and/or git_default_config() */
65char *git_work_tree_cfg;
19757d80 66static char *work_tree;
e90fdc39 67
c5fba16c 68static const char *git_dir;
7f7868ea 69static char *git_object_dir, *git_index_file, *git_graft_file;
c5fba16c 70
48a7c1c4
GB
71/*
72 * Repository-local GIT_* environment variables
73 * Remember to update local_repo_env_size in cache.h when
74 * the size of the list changes
75 */
76const char * const local_repo_env[LOCAL_REPO_ENV_SIZE + 1] = {
77 ALTERNATE_DB_ENVIRONMENT,
78 CONFIG_ENVIRONMENT,
655e8d9c 79 CONFIG_DATA_ENVIRONMENT,
48a7c1c4
GB
80 DB_ENVIRONMENT,
81 GIT_DIR_ENVIRONMENT,
82 GIT_WORK_TREE_ENVIRONMENT,
83 GRAFT_ENVIRONMENT,
84 INDEX_ENVIRONMENT,
85 NO_REPLACE_OBJECTS_ENVIRONMENT,
86 NULL
87};
88
e1b10391
LT
89static void setup_git_env(void)
90{
91 git_dir = getenv(GIT_DIR_ENVIRONMENT);
15431ca6 92 git_dir = git_dir ? xstrdup(git_dir) : NULL;
06f3549d 93 if (!git_dir) {
b44ebb19 94 git_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
06f3549d
JN
95 git_dir = git_dir ? xstrdup(git_dir) : NULL;
96 }
e1b10391
LT
97 if (!git_dir)
98 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
99 git_object_dir = getenv(DB_ENVIRONMENT);
100 if (!git_object_dir) {
101 git_object_dir = xmalloc(strlen(git_dir) + 9);
102 sprintf(git_object_dir, "%s/objects", git_dir);
103 }
e1b10391
LT
104 git_index_file = getenv(INDEX_ENVIRONMENT);
105 if (!git_index_file) {
106 git_index_file = xmalloc(strlen(git_dir) + 7);
107 sprintf(git_index_file, "%s/index", git_dir);
108 }
109 git_graft_file = getenv(GRAFT_ENVIRONMENT);
110 if (!git_graft_file)
a4f34cbb 111 git_graft_file = git_pathdup("info/grafts");
6476b38b
CC
112 if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
113 read_replace_refs = 0;
0bee5918
SP
114}
115
7d1864ce 116int is_bare_repository(void)
0bee5918 117{
e90fdc39
JS
118 /* if core.bare is not 'false', let's see if there is a work tree */
119 return is_bare_repository_cfg && !get_git_work_tree();
e1b10391
LT
120}
121
d2b0708e
DP
122int have_git_dir(void)
123{
124 return !!git_dir;
125}
126
c5fba16c 127const char *get_git_dir(void)
e1b10391
LT
128{
129 if (!git_dir)
130 setup_git_env();
131 return git_dir;
132}
133
19757d80
DB
134static int git_work_tree_initialized;
135
136/*
137 * Note. This works only before you used a work tree. This was added
138 * primarily to support git-clone to work in a new repository it just
139 * created, and is not meant to flip between different work trees.
140 */
141void set_git_work_tree(const char *new_work_tree)
142{
83518360 143 if (git_work_tree_initialized) {
e2a57aac 144 new_work_tree = real_path(new_work_tree);
83518360
NTND
145 if (strcmp(new_work_tree, work_tree))
146 die("internal error: work tree has already been set\n"
147 "Current worktree: %s\nNew worktree: %s",
148 work_tree, new_work_tree);
149 return;
150 }
19757d80 151 git_work_tree_initialized = 1;
e2a57aac 152 work_tree = xstrdup(real_path(new_work_tree));
19757d80
DB
153}
154
e90fdc39
JS
155const char *get_git_work_tree(void)
156{
e90fdc39
JS
157 return work_tree;
158}
159
e1b10391
LT
160char *get_object_directory(void)
161{
162 if (!git_object_dir)
163 setup_git_env();
164 return git_object_dir;
165}
166
463db9b1
JN
167int odb_mkstemp(char *template, size_t limit, const char *pattern)
168{
169 int fd;
170 /*
171 * we let the umask do its job, don't try to be more
172 * restrictive except to remove write permission.
173 */
174 int mode = 0444;
175 snprintf(template, limit, "%s/%s",
176 get_object_directory(), pattern);
177 fd = git_mkstemp_mode(template, mode);
178 if (0 <= fd)
179 return fd;
180
181 /* slow path */
182 /* some mkstemp implementations erase template on failure */
183 snprintf(template, limit, "%s/%s",
184 get_object_directory(), pattern);
185 safe_create_leading_directories(template);
186 return xmkstemp_mode(template, mode);
187}
188
189int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1)
190{
191 int fd;
192
193 snprintf(name, namesz, "%s/pack/pack-%s.keep",
194 get_object_directory(), sha1_to_hex(sha1));
195 fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
196 if (0 <= fd)
197 return fd;
198
199 /* slow path */
200 safe_create_leading_directories(name);
201 return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
202}
203
e1b10391
LT
204char *get_index_file(void)
205{
206 if (!git_index_file)
207 setup_git_env();
208 return git_index_file;
209}
210
211char *get_graft_file(void)
212{
213 if (!git_graft_file)
214 setup_git_env();
215 return git_graft_file;
216}
d7ac12b2
JS
217
218int set_git_dir(const char *path)
219{
220 if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
221 return error("Could not set GIT_DIR to '%s'", path);
222 setup_git_env();
223 return 0;
224}
a6fa5992
PN
225
226const char *get_log_output_encoding(void)
227{
228 return git_log_output_encoding ? git_log_output_encoding
229 : get_commit_output_encoding();
230}
231
232const char *get_commit_output_encoding(void)
233{
234 return git_commit_encoding ? git_commit_encoding : "UTF-8";
235}