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#include "refs.h"
12#include "fmt-merge-msg.h"
13int trust_executable_bit = 1;
15int trust_ctime = 1;
16int check_stat = 1;
17int has_symlinks = 1;
18int minimum_abbrev = 4, default_abbrev = 7;
19int ignore_case;
20int assume_unchanged;
21int prefer_symlink_refs;
22int is_bare_repository_cfg = -1; /* unspecified */
23int log_all_ref_updates = -1; /* unspecified */
24int warn_ambiguous_refs = 1;
25int warn_on_object_refname_ambiguity = 1;
26int repository_format_version;
27const char *git_commit_encoding;
28const char *git_log_output_encoding;
29int shared_repository = PERM_UMASK;
30const char *apply_default_whitespace;
31const char *apply_default_ignorewhitespace;
32const char *git_attributes_file;
33int zlib_compression_level = Z_BEST_SPEED;
34int core_compression_level;
35int core_compression_seen;
36int fsync_object_files;
37size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
38size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
39size_t delta_base_cache_limit = 16 * 1024 * 1024;
40unsigned long big_file_threshold = 512 * 1024 * 1024;
41const char *pager_program;
42int pager_use_color = 1;
43const char *editor_program;
44const char *askpass_program;
45const char *excludes_file;
46enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
47int read_replace_refs = 1; /* NEEDSWORK: rename to use_replace_refs */
48enum eol core_eol = EOL_UNSET;
49enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
50unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
51enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
52enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
53enum push_default_type push_default = PUSH_DEFAULT_UNSPECIFIED;
54#ifndef OBJECT_CREATION_MODE
55#define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
56#endif
57enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
58char *notes_ref_name;
59int grafts_replace_parents = 1;
60int core_apply_sparse_checkout;
61int merge_log_config = -1;
62int precomposed_unicode = -1; /* see probe_utf8_pathname_composition() */
63struct startup_info *startup_info;
64unsigned long pack_size_limit_cfg;
65/*
67 * The character that begins a commented line in user-editable file
68 * that is subject to stripspace.
69 */
70char comment_line_char = '#';
71/* Parallel index stat data preload? */
73int core_preload_index = 0;
74/* This is set by setup_git_dir_gently() and/or git_default_config() */
76char *git_work_tree_cfg;
77static char *work_tree;
78static const char *namespace;
80static size_t namespace_len;
81static const char *git_dir;
83static char *git_object_dir, *git_index_file, *git_graft_file;
84/*
86 * Repository-local GIT_* environment variables; see cache.h for details.
87 */
88const char * const local_repo_env[] = {
89 ALTERNATE_DB_ENVIRONMENT,
90 CONFIG_ENVIRONMENT,
91 CONFIG_DATA_ENVIRONMENT,
92 DB_ENVIRONMENT,
93 GIT_DIR_ENVIRONMENT,
94 GIT_WORK_TREE_ENVIRONMENT,
95 GIT_IMPLICIT_WORK_TREE_ENVIRONMENT,
96 GRAFT_ENVIRONMENT,
97 INDEX_ENVIRONMENT,
98 NO_REPLACE_OBJECTS_ENVIRONMENT,
99 GIT_PREFIX_ENVIRONMENT,
100 NULL
101};
102static char *expand_namespace(const char *raw_namespace)
104{
105 struct strbuf buf = STRBUF_INIT;
106 struct strbuf **components, **c;
107 if (!raw_namespace || !*raw_namespace)
109 return xstrdup("");
110 strbuf_addstr(&buf, raw_namespace);
112 components = strbuf_split(&buf, '/');
113 strbuf_reset(&buf);
114 for (c = components; *c; c++)
115 if (strcmp((*c)->buf, "/") != 0)
116 strbuf_addf(&buf, "refs/namespaces/%s", (*c)->buf);
117 strbuf_list_free(components);
118 if (check_refname_format(buf.buf, 0))
119 die("bad git namespace path \"%s\"", raw_namespace);
120 strbuf_addch(&buf, '/');
121 return strbuf_detach(&buf, NULL);
122}
123static void setup_git_env(void)
125{
126 const char *gitfile;
127 git_dir = getenv(GIT_DIR_ENVIRONMENT);
129 if (!git_dir)
130 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
131 gitfile = read_gitfile(git_dir);
132 git_dir = xstrdup(gitfile ? gitfile : git_dir);
133 git_object_dir = getenv(DB_ENVIRONMENT);
134 if (!git_object_dir) {
135 git_object_dir = xmalloc(strlen(git_dir) + 9);
136 sprintf(git_object_dir, "%s/objects", git_dir);
137 }
138 git_index_file = getenv(INDEX_ENVIRONMENT);
139 if (!git_index_file) {
140 git_index_file = xmalloc(strlen(git_dir) + 7);
141 sprintf(git_index_file, "%s/index", git_dir);
142 }
143 git_graft_file = getenv(GRAFT_ENVIRONMENT);
144 if (!git_graft_file)
145 git_graft_file = git_pathdup("info/grafts");
146 if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
147 read_replace_refs = 0;
148 namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT));
149 namespace_len = strlen(namespace);
150}
151int is_bare_repository(void)
153{
154 /* if core.bare is not 'false', let's see if there is a work tree */
155 return is_bare_repository_cfg && !get_git_work_tree();
156}
157int have_git_dir(void)
159{
160 return !!git_dir;
161}
162const char *get_git_dir(void)
164{
165 if (!git_dir)
166 setup_git_env();
167 return git_dir;
168}
169const char *get_git_namespace(void)
171{
172 if (!namespace)
173 setup_git_env();
174 return namespace;
175}
176const char *strip_namespace(const char *namespaced_ref)
178{
179 if (prefixcmp(namespaced_ref, get_git_namespace()) != 0)
180 return NULL;
181 return namespaced_ref + namespace_len;
182}
183static int git_work_tree_initialized;
185/*
187 * Note. This works only before you used a work tree. This was added
188 * primarily to support git-clone to work in a new repository it just
189 * created, and is not meant to flip between different work trees.
190 */
191void set_git_work_tree(const char *new_work_tree)
192{
193 if (git_work_tree_initialized) {
194 new_work_tree = real_path(new_work_tree);
195 if (strcmp(new_work_tree, work_tree))
196 die("internal error: work tree has already been set\n"
197 "Current worktree: %s\nNew worktree: %s",
198 work_tree, new_work_tree);
199 return;
200 }
201 git_work_tree_initialized = 1;
202 work_tree = xstrdup(real_path(new_work_tree));
203}
204const char *get_git_work_tree(void)
206{
207 return work_tree;
208}
209char *get_object_directory(void)
211{
212 if (!git_object_dir)
213 setup_git_env();
214 return git_object_dir;
215}
216int odb_mkstemp(char *template, size_t limit, const char *pattern)
218{
219 int fd;
220 /*
221 * we let the umask do its job, don't try to be more
222 * restrictive except to remove write permission.
223 */
224 int mode = 0444;
225 snprintf(template, limit, "%s/%s",
226 get_object_directory(), pattern);
227 fd = git_mkstemp_mode(template, mode);
228 if (0 <= fd)
229 return fd;
230 /* slow path */
232 /* some mkstemp implementations erase template on failure */
233 snprintf(template, limit, "%s/%s",
234 get_object_directory(), pattern);
235 safe_create_leading_directories(template);
236 return xmkstemp_mode(template, mode);
237}
238int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1)
240{
241 int fd;
242 snprintf(name, namesz, "%s/pack/pack-%s.keep",
244 get_object_directory(), sha1_to_hex(sha1));
245 fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
246 if (0 <= fd)
247 return fd;
248 /* slow path */
250 safe_create_leading_directories(name);
251 return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
252}
253char *get_index_file(void)
255{
256 if (!git_index_file)
257 setup_git_env();
258 return git_index_file;
259}
260char *get_graft_file(void)
262{
263 if (!git_graft_file)
264 setup_git_env();
265 return git_graft_file;
266}
267int set_git_dir(const char *path)
269{
270 if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
271 return error("Could not set GIT_DIR to '%s'", path);
272 setup_git_env();
273 return 0;
274}
275const char *get_log_output_encoding(void)
277{
278 return git_log_output_encoding ? git_log_output_encoding
279 : get_commit_output_encoding();
280}
281const char *get_commit_output_encoding(void)
283{
284 return git_commit_encoding ? git_commit_encoding : "UTF-8";
285}