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Commit | Line | Data |
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12dccc16 | 1 | #include "cache.h" |
8e440259 | 2 | #include "blob.h" |
12dccc16 | 3 | |
efbc5831 | 4 | static void create_directories(const char *path, const struct checkout *state) |
12dccc16 LT |
5 | { |
6 | int len = strlen(path); | |
7 | char *buf = xmalloc(len + 1); | |
8 | const char *slash = path; | |
9 | ||
10 | while ((slash = strchr(slash+1, '/')) != NULL) { | |
11 | len = slash - path; | |
12 | memcpy(buf, path, len); | |
13 | buf[len] = 0; | |
f312de01 | 14 | if (mkdir(buf, 0777)) { |
12dccc16 LT |
15 | if (errno == EEXIST) { |
16 | struct stat st; | |
f312de01 | 17 | if (len > state->base_dir_len && state->force && !unlink(buf) && !mkdir(buf, 0777)) |
12dccc16 LT |
18 | continue; |
19 | if (!stat(buf, &st) && S_ISDIR(st.st_mode)) | |
20 | continue; /* ok */ | |
21 | } | |
22 | die("cannot create directory at %s", buf); | |
23 | } | |
24 | } | |
25 | free(buf); | |
26 | } | |
27 | ||
28 | static void remove_subtree(const char *path) | |
29 | { | |
30 | DIR *dir = opendir(path); | |
31 | struct dirent *de; | |
32 | char pathbuf[PATH_MAX]; | |
33 | char *name; | |
34 | ||
35 | if (!dir) | |
cc2903fc | 36 | die("cannot opendir %s (%s)", path, strerror(errno)); |
12dccc16 LT |
37 | strcpy(pathbuf, path); |
38 | name = pathbuf + strlen(path); | |
39 | *name++ = '/'; | |
40 | while ((de = readdir(dir)) != NULL) { | |
41 | struct stat st; | |
42 | if ((de->d_name[0] == '.') && | |
43 | ((de->d_name[1] == 0) || | |
44 | ((de->d_name[1] == '.') && de->d_name[2] == 0))) | |
45 | continue; | |
46 | strcpy(name, de->d_name); | |
47 | if (lstat(pathbuf, &st)) | |
cc2903fc | 48 | die("cannot lstat %s (%s)", pathbuf, strerror(errno)); |
12dccc16 LT |
49 | if (S_ISDIR(st.st_mode)) |
50 | remove_subtree(pathbuf); | |
51 | else if (unlink(pathbuf)) | |
cc2903fc | 52 | die("cannot unlink %s (%s)", pathbuf, strerror(errno)); |
12dccc16 LT |
53 | } |
54 | closedir(dir); | |
55 | if (rmdir(path)) | |
cc2903fc | 56 | die("cannot rmdir %s (%s)", path, strerror(errno)); |
12dccc16 LT |
57 | } |
58 | ||
d48a72f3 | 59 | static int create_file(const char *path, unsigned int mode) |
12dccc16 | 60 | { |
12dccc16 | 61 | mode = (mode & 0100) ? 0777 : 0666; |
781411ed | 62 | return open(path, O_WRONLY | O_CREAT | O_EXCL, mode); |
12dccc16 LT |
63 | } |
64 | ||
f0807e62 LT |
65 | static void *read_blob_entry(struct cache_entry *ce, const char *path, unsigned long *size) |
66 | { | |
67 | enum object_type type; | |
68 | void *new = read_sha1_file(ce->sha1, &type, size); | |
69 | ||
70 | if (new) { | |
71 | if (type == OBJ_BLOB) | |
72 | return new; | |
73 | free(new); | |
74 | } | |
75 | return NULL; | |
76 | } | |
77 | ||
efbc5831 | 78 | static int write_entry(struct cache_entry *ce, char *path, const struct checkout *state, int to_tempfile) |
12dccc16 LT |
79 | { |
80 | int fd; | |
12dccc16 | 81 | long wrote; |
12dccc16 | 82 | |
12dccc16 | 83 | switch (ntohl(ce->ce_mode) & S_IFMT) { |
f0807e62 | 84 | char *buf, *new; |
a2d7c6c6 | 85 | unsigned long size; |
6c510bee | 86 | |
12dccc16 | 87 | case S_IFREG: |
f0807e62 LT |
88 | new = read_blob_entry(ce, path, &size); |
89 | if (!new) | |
90 | return error("git-checkout-index: unable to read sha1 file of %s (%s)", | |
91 | path, sha1_to_hex(ce->sha1)); | |
de84f99c SP |
92 | if (to_tempfile) { |
93 | strcpy(path, ".merge_file_XXXXXX"); | |
94 | fd = mkstemp(path); | |
95 | } else | |
96 | fd = create_file(path, ntohl(ce->ce_mode)); | |
12dccc16 LT |
97 | if (fd < 0) { |
98 | free(new); | |
215a7ad1 | 99 | return error("git-checkout-index: unable to create file %s (%s)", |
12dccc16 LT |
100 | path, strerror(errno)); |
101 | } | |
6c510bee LT |
102 | |
103 | /* | |
104 | * Convert from git internal format to working tree format | |
105 | */ | |
ac78e548 AR |
106 | buf = convert_to_working_tree(ce->name, new, &size); |
107 | if (buf) { | |
6c510bee LT |
108 | free(new); |
109 | new = buf; | |
6c510bee LT |
110 | } |
111 | ||
93822c22 | 112 | wrote = write_in_full(fd, new, size); |
12dccc16 LT |
113 | close(fd); |
114 | free(new); | |
115 | if (wrote != size) | |
215a7ad1 | 116 | return error("git-checkout-index: unable to write file %s", path); |
12dccc16 LT |
117 | break; |
118 | case S_IFLNK: | |
f0807e62 LT |
119 | new = read_blob_entry(ce, path, &size); |
120 | if (!new) | |
121 | return error("git-checkout-index: unable to read sha1 file of %s (%s)", | |
122 | path, sha1_to_hex(ce->sha1)); | |
78a8d641 JS |
123 | if (to_tempfile || !has_symlinks) { |
124 | if (to_tempfile) { | |
125 | strcpy(path, ".merge_link_XXXXXX"); | |
126 | fd = mkstemp(path); | |
127 | } else | |
128 | fd = create_file(path, 0666); | |
de84f99c SP |
129 | if (fd < 0) { |
130 | free(new); | |
131 | return error("git-checkout-index: unable to create " | |
132 | "file %s (%s)", path, strerror(errno)); | |
133 | } | |
93822c22 | 134 | wrote = write_in_full(fd, new, size); |
de84f99c SP |
135 | close(fd); |
136 | free(new); | |
137 | if (wrote != size) | |
138 | return error("git-checkout-index: unable to write file %s", | |
139 | path); | |
140 | } else { | |
141 | wrote = symlink(new, path); | |
12dccc16 | 142 | free(new); |
de84f99c SP |
143 | if (wrote) |
144 | return error("git-checkout-index: unable to create " | |
145 | "symlink %s (%s)", path, strerror(errno)); | |
12dccc16 | 146 | } |
12dccc16 | 147 | break; |
302b9282 | 148 | case S_IFGITLINK: |
f0807e62 LT |
149 | if (to_tempfile) |
150 | return error("git-checkout-index: cannot create temporary subproject %s", path); | |
151 | if (mkdir(path, 0777) < 0) | |
152 | return error("git-checkout-index: cannot create subproject directory %s", path); | |
153 | break; | |
12dccc16 | 154 | default: |
215a7ad1 | 155 | return error("git-checkout-index: unknown file mode for %s", path); |
12dccc16 LT |
156 | } |
157 | ||
6ee67f26 | 158 | if (state->refresh_cache) { |
12dccc16 LT |
159 | struct stat st; |
160 | lstat(ce->name, &st); | |
161 | fill_stat_cache_info(ce, &st); | |
162 | } | |
163 | return 0; | |
164 | } | |
165 | ||
efbc5831 | 166 | int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath) |
12dccc16 | 167 | { |
095c424d | 168 | static char path[PATH_MAX + 1]; |
de84f99c | 169 | struct stat st; |
12dccc16 LT |
170 | int len = state->base_dir_len; |
171 | ||
de84f99c SP |
172 | if (topath) |
173 | return write_entry(ce, topath, state, 1); | |
174 | ||
12dccc16 LT |
175 | memcpy(path, state->base_dir, len); |
176 | strcpy(path + len, ce->name); | |
177 | ||
178 | if (!lstat(path, &st)) { | |
5f73076c | 179 | unsigned changed = ce_match_stat(ce, &st, 1); |
12dccc16 LT |
180 | if (!changed) |
181 | return 0; | |
182 | if (!state->force) { | |
183 | if (!state->quiet) | |
215a7ad1 | 184 | fprintf(stderr, "git-checkout-index: %s already exists\n", path); |
4b12dae6 | 185 | return -1; |
12dccc16 LT |
186 | } |
187 | ||
188 | /* | |
189 | * We unlink the old file, to get the new one with the | |
190 | * right permissions (including umask, which is nasty | |
191 | * to emulate by hand - much easier to let the system | |
192 | * just do the right thing) | |
193 | */ | |
194 | unlink(path); | |
d48a72f3 | 195 | if (S_ISDIR(st.st_mode)) { |
f0807e62 | 196 | /* If it is a gitlink, leave it alone! */ |
302b9282 | 197 | if (S_ISGITLINK(ntohl(ce->ce_mode))) |
f0807e62 | 198 | return 0; |
d48a72f3 LT |
199 | if (!state->force) |
200 | return error("%s is a directory", path); | |
201 | remove_subtree(path); | |
202 | } | |
de84f99c | 203 | } else if (state->not_new) |
12dccc16 LT |
204 | return 0; |
205 | create_directories(path, state); | |
de84f99c | 206 | return write_entry(ce, path, state, 0); |
12dccc16 | 207 | } |