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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 | ||
8683a45d | 127 | if (!template_dir) { |
d4ebc36c | 128 | template_dir = getenv(TEMPLATE_DIR_ENVIRONMENT); |
8683a45d JS |
129 | if (!template_dir) |
130 | template_dir = DEFAULT_GIT_TEMPLATE_DIR; | |
131 | } | |
8d5afef0 JH |
132 | strcpy(template_path, template_dir); |
133 | template_len = strlen(template_path); | |
134 | if (template_path[template_len-1] != '/') { | |
135 | template_path[template_len++] = '/'; | |
136 | template_path[template_len] = 0; | |
137 | } | |
8d5afef0 | 138 | dir = opendir(template_path); |
d3af621b JH |
139 | if (!dir) { |
140 | fprintf(stderr, "warning: templates not found %s\n", | |
141 | template_dir); | |
8d5afef0 | 142 | return; |
d3af621b JH |
143 | } |
144 | ||
4f629539 JH |
145 | /* Make sure that template is from the correct vintage */ |
146 | strcpy(template_path + template_len, "config"); | |
147 | repository_format_version = 0; | |
148 | git_config_from_file(check_repository_format_version, | |
149 | template_path); | |
150 | template_path[template_len] = 0; | |
151 | ||
152 | if (repository_format_version && | |
153 | repository_format_version != GIT_REPO_VERSION) { | |
154 | fprintf(stderr, "warning: not copying templates of " | |
155 | "a wrong format version %d from '%s'\n", | |
156 | repository_format_version, | |
157 | template_dir); | |
158 | closedir(dir); | |
159 | return; | |
160 | } | |
161 | ||
d3af621b | 162 | memcpy(path, git_dir, len); |
1f961c19 | 163 | path[len] = 0; |
8d5afef0 JH |
164 | copy_templates_1(path, len, |
165 | template_path, template_len, | |
166 | dir); | |
167 | closedir(dir); | |
168 | } | |
169 | ||
ef0a89a6 | 170 | static int create_default_files(const char *git_dir, const char *template_path) |
cad88fdf LT |
171 | { |
172 | unsigned len = strlen(git_dir); | |
173 | static char path[PATH_MAX]; | |
8098a178 | 174 | unsigned char sha1[20]; |
4f629539 JH |
175 | struct stat st1; |
176 | char repo_version_string[10]; | |
ef0a89a6 | 177 | int reinit; |
cad88fdf LT |
178 | |
179 | if (len > sizeof(path)-50) | |
180 | die("insane git directory %s", git_dir); | |
181 | memcpy(path, git_dir, len); | |
182 | ||
183 | if (len && path[len-1] != '/') | |
184 | path[len++] = '/'; | |
185 | ||
186 | /* | |
187 | * Create .git/refs/{heads,tags} | |
188 | */ | |
189 | strcpy(path + len, "refs"); | |
af6e277c | 190 | safe_create_dir(path, 1); |
cad88fdf | 191 | strcpy(path + len, "refs/heads"); |
af6e277c | 192 | safe_create_dir(path, 1); |
cad88fdf | 193 | strcpy(path + len, "refs/tags"); |
af6e277c | 194 | safe_create_dir(path, 1); |
cad88fdf | 195 | |
4f629539 JH |
196 | /* First copy the templates -- we might have the default |
197 | * config file there, in which case we would want to read | |
198 | * from it after installing. | |
199 | */ | |
200 | path[len] = 0; | |
201 | copy_templates(path, len, template_path); | |
202 | ||
203 | git_config(git_default_config); | |
204 | ||
138086a7 JH |
205 | /* |
206 | * We would have created the above under user's umask -- under | |
207 | * shared-repository settings, we would need to fix them up. | |
208 | */ | |
209 | if (shared_repository) { | |
210 | path[len] = 0; | |
211 | adjust_shared_perm(path); | |
212 | strcpy(path + len, "refs"); | |
213 | adjust_shared_perm(path); | |
214 | strcpy(path + len, "refs/heads"); | |
215 | adjust_shared_perm(path); | |
216 | strcpy(path + len, "refs/tags"); | |
217 | adjust_shared_perm(path); | |
218 | } | |
219 | ||
cad88fdf LT |
220 | /* |
221 | * Create the default symlink from ".git/HEAD" to the "master" | |
8098a178 | 222 | * branch, if it does not exist yet. |
cad88fdf LT |
223 | */ |
224 | strcpy(path + len, "HEAD"); | |
ef0a89a6 SP |
225 | reinit = !read_ref("HEAD", sha1); |
226 | if (!reinit) { | |
ed378ec7 | 227 | if (create_symref("HEAD", "refs/heads/master") < 0) |
cad88fdf | 228 | exit(1); |
cad88fdf | 229 | } |
e24317b4 | 230 | |
4f629539 JH |
231 | /* This forces creation of new config file */ |
232 | sprintf(repo_version_string, "%d", GIT_REPO_VERSION); | |
233 | git_config_set("core.repositoryformatversion", repo_version_string); | |
234 | ||
235 | path[len] = 0; | |
e24317b4 | 236 | strcpy(path + len, "config"); |
4f629539 JH |
237 | |
238 | /* Check filemode trustability */ | |
239 | if (!lstat(path, &st1)) { | |
240 | struct stat st2; | |
241 | int filemode = (!chmod(path, st1.st_mode ^ S_IXUSR) && | |
242 | !lstat(path, &st2) && | |
243 | st1.st_mode != st2.st_mode); | |
244 | git_config_set("core.filemode", | |
245 | filemode ? "true" : "false"); | |
e24317b4 | 246 | } |
ef0a89a6 | 247 | |
0bee5918 SP |
248 | /* Enable logAllRefUpdates if a working tree is attached */ |
249 | if (!is_bare_git_dir(git_dir)) | |
250 | git_config_set("core.logallrefupdates", "true"); | |
ef0a89a6 | 251 | return reinit; |
cad88fdf LT |
252 | } |
253 | ||
d3af621b | 254 | static const char init_db_usage[] = |
af6e277c | 255 | "git-init-db [--template=<template-directory>] [--shared]"; |
d3af621b | 256 | |
4696cb93 ZW |
257 | /* |
258 | * If you want to, you can share the DB area with any number of branches. | |
259 | * That has advantages: you can save space by sharing all the SHA1 objects. | |
260 | * On the other hand, it might just make lookup slower and messier. You | |
261 | * be the judge. The default case is to have one DB per managed directory. | |
262 | */ | |
a633fca0 | 263 | int cmd_init_db(int argc, const char **argv, const char *prefix) |
e83c5163 | 264 | { |
cad88fdf | 265 | const char *git_dir; |
d19938ab | 266 | const char *sha1_dir; |
c3c8835f TH |
267 | const char *template_dir = NULL; |
268 | char *path; | |
ef0a89a6 | 269 | int len, i, reinit; |
e83c5163 | 270 | |
d3af621b | 271 | for (i = 1; i < argc; i++, argv++) { |
c3c8835f | 272 | const char *arg = argv[1]; |
4a62eaed | 273 | if (!strncmp(arg, "--template=", 11)) |
d3af621b | 274 | template_dir = arg+11; |
af6e277c | 275 | else if (!strcmp(arg, "--shared")) |
94df2506 JH |
276 | shared_repository = PERM_GROUP; |
277 | else if (!strncmp(arg, "--shared=", 9)) | |
278 | shared_repository = git_config_perm("arg", arg+9); | |
d3af621b | 279 | else |
8cdf3364 | 280 | usage(init_db_usage); |
d3af621b JH |
281 | } |
282 | ||
cad88fdf LT |
283 | /* |
284 | * Set up the default .git directory contents | |
285 | */ | |
a9ab586a | 286 | git_dir = getenv(GIT_DIR_ENVIRONMENT); |
ef0a89a6 | 287 | if (!git_dir) |
cad88fdf | 288 | git_dir = DEFAULT_GIT_DIR_ENVIRONMENT; |
af6e277c | 289 | safe_create_dir(git_dir, 0); |
4f629539 JH |
290 | |
291 | /* Check to see if the repository version is right. | |
292 | * Note that a newly created repository does not have | |
293 | * config file, so this will not fail. What we are catching | |
294 | * is an attempt to reinitialize new repository with an old tool. | |
295 | */ | |
296 | check_repository_format(); | |
297 | ||
ef0a89a6 | 298 | reinit = create_default_files(git_dir, template_dir); |
cad88fdf LT |
299 | |
300 | /* | |
301 | * And set up the object store. | |
302 | */ | |
303 | sha1_dir = get_object_directory(); | |
e83c5163 | 304 | len = strlen(sha1_dir); |
812666c8 | 305 | path = xmalloc(len + 40); |
e83c5163 | 306 | memcpy(path, sha1_dir, len); |
cb126d8d | 307 | |
af6e277c | 308 | safe_create_dir(sha1_dir, 1); |
f49fb35d | 309 | strcpy(path+len, "/pack"); |
af6e277c | 310 | safe_create_dir(path, 1); |
d57306c7 | 311 | strcpy(path+len, "/info"); |
af6e277c JS |
312 | safe_create_dir(path, 1); |
313 | ||
94df2506 JH |
314 | if (shared_repository) { |
315 | char buf[10]; | |
316 | /* We do not spell "group" and such, so that | |
317 | * the configuration can be read by older version | |
318 | * of git. | |
319 | */ | |
320 | sprintf(buf, "%d", shared_repository); | |
321 | git_config_set("core.sharedrepository", buf); | |
11031d7e | 322 | git_config_set("receive.denyNonFastforwards", "true"); |
94df2506 | 323 | } |
af6e277c | 324 | |
ef0a89a6 SP |
325 | printf("%s%s Git repository in %s/\n", |
326 | reinit ? "Reinitialized existing" : "Initialized empty", | |
327 | shared_repository ? " shared" : "", | |
328 | git_dir); | |
329 | ||
e83c5163 LT |
330 | return 0; |
331 | } |