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Commit | Line | Data |
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8bc9a0c7 LT |
1 | /* |
2 | * GIT - The information manager from hell | |
3 | * | |
4 | * Copyright (C) Linus Torvalds, 2005 | |
5 | */ | |
e83c5163 | 6 | #include "cache.h" |
c3c8835f | 7 | #include "builtin.h" |
e83c5163 | 8 | |
d3af621b JH |
9 | #ifndef DEFAULT_GIT_TEMPLATE_DIR |
10 | #define DEFAULT_GIT_TEMPLATE_DIR "/usr/share/git-core/templates/" | |
11 | #endif | |
12 | ||
af6e277c | 13 | static void safe_create_dir(const char *dir, int share) |
cb126d8d | 14 | { |
f312de01 | 15 | if (mkdir(dir, 0777) < 0) { |
cb126d8d ZW |
16 | if (errno != EEXIST) { |
17 | perror(dir); | |
18 | exit(1); | |
19 | } | |
20 | } | |
af6e277c JS |
21 | else if (share && adjust_shared_perm(dir)) |
22 | die("Could not make %s writable by group\n", dir); | |
cb126d8d ZW |
23 | } |
24 | ||
8d5afef0 JH |
25 | static int copy_file(const char *dst, const char *src, int mode) |
26 | { | |
32276c80 | 27 | int fdi, fdo, status; |
8d5afef0 JH |
28 | |
29 | mode = (mode & 0111) ? 0777 : 0666; | |
30 | if ((fdi = open(src, O_RDONLY)) < 0) | |
31 | return fdi; | |
32 | if ((fdo = open(dst, O_WRONLY | O_CREAT | O_EXCL, mode)) < 0) { | |
33 | close(fdi); | |
34 | return fdo; | |
35 | } | |
32276c80 | 36 | status = copy_fd(fdi, fdo); |
8d5afef0 | 37 | close(fdo); |
af6e277c JS |
38 | |
39 | if (!status && adjust_shared_perm(dst)) | |
40 | return -1; | |
41 | ||
32276c80 | 42 | return status; |
8d5afef0 JH |
43 | } |
44 | ||
45 | static void copy_templates_1(char *path, int baselen, | |
46 | char *template, int template_baselen, | |
47 | DIR *dir) | |
48 | { | |
49 | struct dirent *de; | |
50 | ||
51 | /* Note: if ".git/hooks" file exists in the repository being | |
52 | * re-initialized, /etc/core-git/templates/hooks/update would | |
53 | * cause git-init-db to fail here. I think this is sane but | |
54 | * it means that the set of templates we ship by default, along | |
55 | * with the way the namespace under .git/ is organized, should | |
56 | * be really carefully chosen. | |
57 | */ | |
af6e277c | 58 | safe_create_dir(path, 1); |
8d5afef0 JH |
59 | while ((de = readdir(dir)) != NULL) { |
60 | struct stat st_git, st_template; | |
61 | int namelen; | |
62 | int exists = 0; | |
63 | ||
64 | if (de->d_name[0] == '.') | |
65 | continue; | |
66 | namelen = strlen(de->d_name); | |
67 | if ((PATH_MAX <= baselen + namelen) || | |
68 | (PATH_MAX <= template_baselen + namelen)) | |
69 | die("insanely long template name %s", de->d_name); | |
70 | memcpy(path + baselen, de->d_name, namelen+1); | |
71 | memcpy(template + template_baselen, de->d_name, namelen+1); | |
72 | if (lstat(path, &st_git)) { | |
73 | if (errno != ENOENT) | |
74 | die("cannot stat %s", path); | |
75 | } | |
76 | else | |
77 | exists = 1; | |
78 | ||
79 | if (lstat(template, &st_template)) | |
80 | die("cannot stat template %s", template); | |
81 | ||
82 | if (S_ISDIR(st_template.st_mode)) { | |
83 | DIR *subdir = opendir(template); | |
84 | int baselen_sub = baselen + namelen; | |
85 | int template_baselen_sub = template_baselen + namelen; | |
86 | if (!subdir) | |
87 | die("cannot opendir %s", template); | |
88 | path[baselen_sub++] = | |
89 | template[template_baselen_sub++] = '/'; | |
90 | path[baselen_sub] = | |
91 | template[template_baselen_sub] = 0; | |
92 | copy_templates_1(path, baselen_sub, | |
93 | template, template_baselen_sub, | |
94 | subdir); | |
95 | closedir(subdir); | |
96 | } | |
97 | else if (exists) | |
98 | continue; | |
99 | else if (S_ISLNK(st_template.st_mode)) { | |
100 | char lnk[256]; | |
101 | int len; | |
102 | len = readlink(template, lnk, sizeof(lnk)); | |
103 | if (len < 0) | |
104 | die("cannot readlink %s", template); | |
105 | if (sizeof(lnk) <= len) | |
106 | die("insanely long symlink %s", template); | |
107 | lnk[len] = 0; | |
108 | if (symlink(lnk, path)) | |
109 | die("cannot symlink %s %s", lnk, path); | |
110 | } | |
111 | else if (S_ISREG(st_template.st_mode)) { | |
112 | if (copy_file(path, template, st_template.st_mode)) | |
113 | die("cannot copy %s to %s", template, path); | |
114 | } | |
115 | else | |
116 | error("ignoring template %s", template); | |
117 | } | |
118 | } | |
119 | ||
c3c8835f | 120 | static void copy_templates(const char *git_dir, int len, const char *template_dir) |
8d5afef0 JH |
121 | { |
122 | char path[PATH_MAX]; | |
123 | char template_path[PATH_MAX]; | |
d3af621b | 124 | int template_len; |
8d5afef0 JH |
125 | DIR *dir; |
126 | ||
8d5afef0 | 127 | if (!template_dir) |
d3af621b | 128 | template_dir = DEFAULT_GIT_TEMPLATE_DIR; |
8d5afef0 JH |
129 | strcpy(template_path, template_dir); |
130 | template_len = strlen(template_path); | |
131 | if (template_path[template_len-1] != '/') { | |
132 | template_path[template_len++] = '/'; | |
133 | template_path[template_len] = 0; | |
134 | } | |
8d5afef0 | 135 | dir = opendir(template_path); |
d3af621b JH |
136 | if (!dir) { |
137 | fprintf(stderr, "warning: templates not found %s\n", | |
138 | template_dir); | |
8d5afef0 | 139 | return; |
d3af621b JH |
140 | } |
141 | ||
4f629539 JH |
142 | /* Make sure that template is from the correct vintage */ |
143 | strcpy(template_path + template_len, "config"); | |
144 | repository_format_version = 0; | |
145 | git_config_from_file(check_repository_format_version, | |
146 | template_path); | |
147 | template_path[template_len] = 0; | |
148 | ||
149 | if (repository_format_version && | |
150 | repository_format_version != GIT_REPO_VERSION) { | |
151 | fprintf(stderr, "warning: not copying templates of " | |
152 | "a wrong format version %d from '%s'\n", | |
153 | repository_format_version, | |
154 | template_dir); | |
155 | closedir(dir); | |
156 | return; | |
157 | } | |
158 | ||
d3af621b | 159 | memcpy(path, git_dir, len); |
1f961c19 | 160 | path[len] = 0; |
8d5afef0 JH |
161 | copy_templates_1(path, len, |
162 | template_path, template_len, | |
163 | dir); | |
164 | closedir(dir); | |
165 | } | |
166 | ||
c3c8835f | 167 | static void create_default_files(const char *git_dir, const char *template_path) |
cad88fdf LT |
168 | { |
169 | unsigned len = strlen(git_dir); | |
170 | static char path[PATH_MAX]; | |
8098a178 | 171 | unsigned char sha1[20]; |
4f629539 JH |
172 | struct stat st1; |
173 | char repo_version_string[10]; | |
cad88fdf LT |
174 | |
175 | if (len > sizeof(path)-50) | |
176 | die("insane git directory %s", git_dir); | |
177 | memcpy(path, git_dir, len); | |
178 | ||
179 | if (len && path[len-1] != '/') | |
180 | path[len++] = '/'; | |
181 | ||
182 | /* | |
183 | * Create .git/refs/{heads,tags} | |
184 | */ | |
185 | strcpy(path + len, "refs"); | |
af6e277c | 186 | safe_create_dir(path, 1); |
cad88fdf | 187 | strcpy(path + len, "refs/heads"); |
af6e277c | 188 | safe_create_dir(path, 1); |
cad88fdf | 189 | strcpy(path + len, "refs/tags"); |
af6e277c | 190 | safe_create_dir(path, 1); |
cad88fdf | 191 | |
4f629539 JH |
192 | /* First copy the templates -- we might have the default |
193 | * config file there, in which case we would want to read | |
194 | * from it after installing. | |
195 | */ | |
196 | path[len] = 0; | |
197 | copy_templates(path, len, template_path); | |
198 | ||
199 | git_config(git_default_config); | |
200 | ||
138086a7 JH |
201 | /* |
202 | * We would have created the above under user's umask -- under | |
203 | * shared-repository settings, we would need to fix them up. | |
204 | */ | |
205 | if (shared_repository) { | |
206 | path[len] = 0; | |
207 | adjust_shared_perm(path); | |
208 | strcpy(path + len, "refs"); | |
209 | adjust_shared_perm(path); | |
210 | strcpy(path + len, "refs/heads"); | |
211 | adjust_shared_perm(path); | |
212 | strcpy(path + len, "refs/tags"); | |
213 | adjust_shared_perm(path); | |
214 | } | |
215 | ||
cad88fdf LT |
216 | /* |
217 | * Create the default symlink from ".git/HEAD" to the "master" | |
8098a178 | 218 | * branch, if it does not exist yet. |
cad88fdf LT |
219 | */ |
220 | strcpy(path + len, "HEAD"); | |
8098a178 JH |
221 | if (read_ref(path, sha1) < 0) { |
222 | if (create_symref(path, "refs/heads/master") < 0) | |
cad88fdf | 223 | exit(1); |
cad88fdf | 224 | } |
e24317b4 | 225 | |
4f629539 JH |
226 | /* This forces creation of new config file */ |
227 | sprintf(repo_version_string, "%d", GIT_REPO_VERSION); | |
228 | git_config_set("core.repositoryformatversion", repo_version_string); | |
229 | ||
230 | path[len] = 0; | |
e24317b4 | 231 | strcpy(path + len, "config"); |
4f629539 JH |
232 | |
233 | /* Check filemode trustability */ | |
234 | if (!lstat(path, &st1)) { | |
235 | struct stat st2; | |
236 | int filemode = (!chmod(path, st1.st_mode ^ S_IXUSR) && | |
237 | !lstat(path, &st2) && | |
238 | st1.st_mode != st2.st_mode); | |
239 | git_config_set("core.filemode", | |
240 | filemode ? "true" : "false"); | |
e24317b4 | 241 | } |
cad88fdf LT |
242 | } |
243 | ||
d3af621b | 244 | static const char init_db_usage[] = |
af6e277c | 245 | "git-init-db [--template=<template-directory>] [--shared]"; |
d3af621b | 246 | |
4696cb93 ZW |
247 | /* |
248 | * If you want to, you can share the DB area with any number of branches. | |
249 | * That has advantages: you can save space by sharing all the SHA1 objects. | |
250 | * On the other hand, it might just make lookup slower and messier. You | |
251 | * be the judge. The default case is to have one DB per managed directory. | |
252 | */ | |
a633fca0 | 253 | int cmd_init_db(int argc, const char **argv, const char *prefix) |
e83c5163 | 254 | { |
cad88fdf | 255 | const char *git_dir; |
d19938ab | 256 | const char *sha1_dir; |
c3c8835f TH |
257 | const char *template_dir = NULL; |
258 | char *path; | |
19b2860c | 259 | int len, i; |
e83c5163 | 260 | |
d3af621b | 261 | for (i = 1; i < argc; i++, argv++) { |
c3c8835f | 262 | const char *arg = argv[1]; |
4a62eaed | 263 | if (!strncmp(arg, "--template=", 11)) |
d3af621b | 264 | template_dir = arg+11; |
af6e277c | 265 | else if (!strcmp(arg, "--shared")) |
94df2506 JH |
266 | shared_repository = PERM_GROUP; |
267 | else if (!strncmp(arg, "--shared=", 9)) | |
268 | shared_repository = git_config_perm("arg", arg+9); | |
d3af621b | 269 | else |
8cdf3364 | 270 | usage(init_db_usage); |
d3af621b JH |
271 | } |
272 | ||
cad88fdf LT |
273 | /* |
274 | * Set up the default .git directory contents | |
275 | */ | |
a9ab586a | 276 | git_dir = getenv(GIT_DIR_ENVIRONMENT); |
cad88fdf LT |
277 | if (!git_dir) { |
278 | git_dir = DEFAULT_GIT_DIR_ENVIRONMENT; | |
addb315d | 279 | fprintf(stderr, "defaulting to local storage area\n"); |
e83c5163 | 280 | } |
af6e277c | 281 | safe_create_dir(git_dir, 0); |
4f629539 JH |
282 | |
283 | /* Check to see if the repository version is right. | |
284 | * Note that a newly created repository does not have | |
285 | * config file, so this will not fail. What we are catching | |
286 | * is an attempt to reinitialize new repository with an old tool. | |
287 | */ | |
288 | check_repository_format(); | |
289 | ||
d3af621b | 290 | create_default_files(git_dir, template_dir); |
cad88fdf LT |
291 | |
292 | /* | |
293 | * And set up the object store. | |
294 | */ | |
295 | sha1_dir = get_object_directory(); | |
e83c5163 | 296 | len = strlen(sha1_dir); |
812666c8 | 297 | path = xmalloc(len + 40); |
e83c5163 | 298 | memcpy(path, sha1_dir, len); |
cb126d8d | 299 | |
af6e277c | 300 | safe_create_dir(sha1_dir, 1); |
f49fb35d | 301 | strcpy(path+len, "/pack"); |
af6e277c | 302 | safe_create_dir(path, 1); |
d57306c7 | 303 | strcpy(path+len, "/info"); |
af6e277c JS |
304 | safe_create_dir(path, 1); |
305 | ||
94df2506 JH |
306 | if (shared_repository) { |
307 | char buf[10]; | |
308 | /* We do not spell "group" and such, so that | |
309 | * the configuration can be read by older version | |
310 | * of git. | |
311 | */ | |
312 | sprintf(buf, "%d", shared_repository); | |
313 | git_config_set("core.sharedrepository", buf); | |
11031d7e | 314 | git_config_set("receive.denyNonFastforwards", "true"); |
94df2506 | 315 | } |
af6e277c | 316 | |
e83c5163 LT |
317 | return 0; |
318 | } |