5 static void create_directories(const char *path, int path_len,
6 const struct checkout *state)
8 char *buf = xmalloc(path_len + 1);
11 while (len < path_len) {
15 } while (len < path_len && path[len] != '/');
21 * For 'checkout-index --prefix=<dir>', <dir> is
22 * allowed to be a symlink to an existing directory,
23 * and we set 'state->base_dir_len' below, such that
24 * we test the path components of the prefix with the
25 * stat() function instead of the lstat() function.
27 if (has_dirs_only_path(buf, len, state->base_dir_len))
28 continue; /* ok, it is already a directory. */
31 * If this mkdir() would fail, it could be that there
32 * is already a symlink or something else exists
33 * there, therefore we then try to unlink it and try
34 * one more time to create the directory.
36 if (mkdir(buf, 0777)) {
37 if (errno == EEXIST && state->force &&
38 !unlink(buf) && !mkdir(buf, 0777))
40 die("cannot create directory at %s", buf);
46 static void remove_subtree(const char *path)
48 DIR *dir = opendir(path);
50 char pathbuf[PATH_MAX];
54 die("cannot opendir %s (%s)", path, strerror(errno));
55 strcpy(pathbuf, path);
56 name = pathbuf + strlen(path);
58 while ((de = readdir(dir)) != NULL) {
60 if (is_dot_or_dotdot(de->d_name))
62 strcpy(name, de->d_name);
63 if (lstat(pathbuf, &st))
64 die("cannot lstat %s (%s)", pathbuf, strerror(errno));
65 if (S_ISDIR(st.st_mode))
66 remove_subtree(pathbuf);
67 else if (unlink(pathbuf))
68 die("cannot unlink %s (%s)", pathbuf, strerror(errno));
72 die("cannot rmdir %s (%s)", path, strerror(errno));
75 static int create_file(const char *path, unsigned int mode)
77 mode = (mode & 0100) ? 0777 : 0666;
78 return open(path, O_WRONLY | O_CREAT | O_EXCL, mode);
81 static void *read_blob_entry(struct cache_entry *ce, const char *path, unsigned long *size)
83 enum object_type type;
84 void *new = read_sha1_file(ce->sha1, &type, size);
94 static int write_entry(struct cache_entry *ce, char *path, const struct checkout *state, int to_tempfile)
99 switch (ce->ce_mode & S_IFMT) {
105 new = read_blob_entry(ce, path, &size);
107 return error("git checkout-index: unable to read sha1 file of %s (%s)",
108 path, sha1_to_hex(ce->sha1));
111 * Convert from git internal format to working tree format
113 strbuf_init(&buf, 0);
114 if (convert_to_working_tree(ce->name, new, size, &buf)) {
117 new = strbuf_detach(&buf, &newsize);
122 strcpy(path, ".merge_file_XXXXXX");
125 fd = create_file(path, ce->ce_mode);
128 return error("git checkout-index: unable to create file %s (%s)",
129 path, strerror(errno));
132 wrote = write_in_full(fd, new, size);
136 return error("git checkout-index: unable to write file %s", path);
139 new = read_blob_entry(ce, path, &size);
141 return error("git checkout-index: unable to read sha1 file of %s (%s)",
142 path, sha1_to_hex(ce->sha1));
143 if (to_tempfile || !has_symlinks) {
145 strcpy(path, ".merge_link_XXXXXX");
148 fd = create_file(path, 0666);
151 return error("git checkout-index: unable to create "
152 "file %s (%s)", path, strerror(errno));
154 wrote = write_in_full(fd, new, size);
158 return error("git checkout-index: unable to write file %s",
161 wrote = symlink(new, path);
164 return error("git checkout-index: unable to create "
165 "symlink %s (%s)", path, strerror(errno));
170 return error("git checkout-index: cannot create temporary subproject %s", path);
171 if (mkdir(path, 0777) < 0)
172 return error("git checkout-index: cannot create subproject directory %s", path);
175 return error("git checkout-index: unknown file mode for %s", path);
178 if (state->refresh_cache) {
180 lstat(ce->name, &st);
181 fill_stat_cache_info(ce, &st);
186 int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath)
188 static char path[PATH_MAX + 1];
190 int len = state->base_dir_len;
193 return write_entry(ce, topath, state, 1);
195 memcpy(path, state->base_dir, len);
196 strcpy(path + len, ce->name);
197 len += ce_namelen(ce);
199 if (!lstat(path, &st)) {
200 unsigned changed = ce_match_stat(ce, &st, CE_MATCH_IGNORE_VALID);
205 fprintf(stderr, "git-checkout-index: %s already exists\n", path);
210 * We unlink the old file, to get the new one with the
211 * right permissions (including umask, which is nasty
212 * to emulate by hand - much easier to let the system
213 * just do the right thing)
215 if (S_ISDIR(st.st_mode)) {
216 /* If it is a gitlink, leave it alone! */
217 if (S_ISGITLINK(ce->ce_mode))
220 return error("%s is a directory", path);
221 remove_subtree(path);
222 } else if (unlink(path))
223 return error("unable to unlink old '%s' (%s)", path, strerror(errno));
224 } else if (state->not_new)
226 create_directories(path, len, state);
227 return write_entry(ce, path, state, 0);