6 static void create_directories(const char *path
, int path_len
,
7 const struct checkout
*state
)
9 char *buf
= xmalloc(path_len
+ 1);
12 while (len
< path_len
) {
16 } while (len
< path_len
&& path
[len
] != '/');
22 * For 'checkout-index --prefix=<dir>', <dir> is
23 * allowed to be a symlink to an existing directory,
24 * and we set 'state->base_dir_len' below, such that
25 * we test the path components of the prefix with the
26 * stat() function instead of the lstat() function.
28 if (has_dirs_only_path(buf
, len
, state
->base_dir_len
))
29 continue; /* ok, it is already a directory. */
32 * If this mkdir() would fail, it could be that there
33 * is already a symlink or something else exists
34 * there, therefore we then try to unlink it and try
35 * one more time to create the directory.
37 if (mkdir(buf
, 0777)) {
38 if (errno
== EEXIST
&& state
->force
&&
39 !unlink_or_warn(buf
) && !mkdir(buf
, 0777))
41 die_errno("cannot create directory at '%s'", buf
);
47 static void remove_subtree(struct strbuf
*path
)
49 DIR *dir
= opendir(path
->buf
);
51 int origlen
= path
->len
;
54 die_errno("cannot opendir '%s'", path
->buf
);
55 while ((de
= readdir(dir
)) != NULL
) {
58 if (is_dot_or_dotdot(de
->d_name
))
61 strbuf_addch(path
, '/');
62 strbuf_addstr(path
, de
->d_name
);
63 if (lstat(path
->buf
, &st
))
64 die_errno("cannot lstat '%s'", path
->buf
);
65 if (S_ISDIR(st
.st_mode
))
67 else if (unlink(path
->buf
))
68 die_errno("cannot unlink '%s'", path
->buf
);
69 strbuf_setlen(path
, origlen
);
73 die_errno("cannot rmdir '%s'", path
->buf
);
76 static int create_file(const char *path
, unsigned int mode
)
78 mode
= (mode
& 0100) ? 0777 : 0666;
79 return open(path
, O_WRONLY
| O_CREAT
| O_EXCL
, mode
);
82 static void *read_blob_entry(const struct cache_entry
*ce
, unsigned long *size
)
84 enum object_type type
;
85 void *new = read_sha1_file(ce
->sha1
, &type
, size
);
95 static int open_output_fd(char *path
, const struct cache_entry
*ce
, int to_tempfile
)
97 int symlink
= (ce
->ce_mode
& S_IFMT
) != S_IFREG
;
100 ? ".merge_link_XXXXXX" : ".merge_file_XXXXXX");
101 return mkstemp(path
);
103 return create_file(path
, !symlink
? ce
->ce_mode
: 0666);
107 static int fstat_output(int fd
, const struct checkout
*state
, struct stat
*st
)
109 /* use fstat() only when path == ce->name */
110 if (fstat_is_reliable() &&
111 state
->refresh_cache
&& !state
->base_dir_len
) {
118 static int streaming_write_entry(const struct cache_entry
*ce
, char *path
,
119 struct stream_filter
*filter
,
120 const struct checkout
*state
, int to_tempfile
,
121 int *fstat_done
, struct stat
*statbuf
)
126 fd
= open_output_fd(path
, ce
, to_tempfile
);
130 result
|= stream_blob_to_fd(fd
, ce
->sha1
, filter
, 1);
131 *fstat_done
= fstat_output(fd
, state
, statbuf
);
140 * Does 'match' match the given name?
141 * A match is found if
143 * (1) the 'match' string is leading directory of 'name', or
144 * (2) the 'match' string is exactly the same as 'name'.
146 * and the return value tells which case it was.
148 * It returns 0 when there is no match.
150 * Preserved and simplified from dir.c for use here (without glob special matching)
152 static int match_one(const char *match
, const char *name
, int namelen
)
156 /* If the match was just the prefix, we matched */
158 return MATCHED_RECURSIVELY
;
162 unsigned char c1
= tolower(*match
);
163 unsigned char c2
= tolower(*name
);
172 /* We don't match the matchstring exactly, */
173 matchlen
= strlen(match
);
174 if (strncmp_icase(match
, name
, matchlen
))
178 unsigned char c1
= *match
;
179 unsigned char c2
= *name
;
188 /* We don't match the matchstring exactly, */
189 matchlen
= strlen(match
);
190 if (strncmp(match
, name
, matchlen
))
194 if (namelen
== matchlen
)
195 return MATCHED_EXACTLY
;
196 if (match
[matchlen
-1] == '/' || name
[matchlen
] == '/')
197 return MATCHED_RECURSIVELY
;
201 static enum git_target_type
get_symlink_type(const char *filepath
, const char *symlinkpath
)
203 /* For certain O/S and file-systems, symlinks need to know before-hand whether it
204 * is a directory or a file being pointed to.
206 * This allows us to use index information for relative paths that lie
207 * within the working directory.
209 * This function is not interested in interrogating the file-system.
212 const char *fpos
, *last
;
213 enum git_target_type ret
;
216 /* This is an absolute path, so git doesn't know.
218 if (is_absolute_path(symlinkpath
))
219 return GIT_TARGET_UNKNOWN
;
221 /* Work on a sanitized version of the path that can be
222 * matched against the index.
225 for (fpos
= filepath
; *fpos
; ++fpos
)
226 if (is_dir_sep(*fpos
))
230 len
= (1+last
-filepath
);
231 sanitized
= xmalloc(len
+ strlen(symlinkpath
)+1);
232 memcpy(sanitized
, filepath
, 1+last
-filepath
);
235 sanitized
= xmalloc(strlen(symlinkpath
)+1);
237 strcpy(sanitized
+len
, symlinkpath
);
239 ret
= GIT_TARGET_UNKNOWN
;
240 if (!normalize_path_copy(sanitized
, sanitized
)) {
241 for (pos
= 0; pos
< active_nr
; pos
++) {
242 struct cache_entry
*ce
= active_cache
[pos
];
243 switch (match_one(sanitized
, ce
->name
, ce_namelen(ce
))) {
244 case MATCHED_EXACTLY
:
245 case MATCHED_FNMATCH
:
246 ret
= GIT_TARGET_ISFILE
;
248 case MATCHED_RECURSIVELY
:
249 ret
= GIT_TARGET_ISDIR
;
259 static int write_entry(struct cache_entry
*ce
,
260 char *path
, const struct checkout
*state
, int to_tempfile
)
262 unsigned int ce_mode_s_ifmt
= ce
->ce_mode
& S_IFMT
;
263 int fd
, ret
, fstat_done
= 0;
265 struct strbuf buf
= STRBUF_INIT
;
267 size_t wrote
, newsize
= 0;
270 if (ce_mode_s_ifmt
== S_IFREG
) {
271 struct stream_filter
*filter
= get_stream_filter(ce
->name
, ce
->sha1
);
273 !streaming_write_entry(ce
, path
, filter
,
279 switch (ce_mode_s_ifmt
) {
282 new = read_blob_entry(ce
, &size
);
284 return error("unable to read sha1 file of %s (%s)",
285 path
, sha1_to_hex(ce
->sha1
));
287 if (ce_mode_s_ifmt
== S_IFLNK
&& has_symlinks
&& !to_tempfile
) {
288 /* Note that symlink_with_type is a macro, and that for filesystems that
289 * don't care, get_symlink_type will not be called.
291 ret
= symlink_with_type(new, path
, get_symlink_type(path
, new));
294 return error("unable to create symlink %s (%s)",
295 path
, strerror(errno
));
300 * Convert from git internal format to working tree format
302 if (ce_mode_s_ifmt
== S_IFREG
&&
303 convert_to_working_tree(ce
->name
, new, size
, &buf
)) {
305 new = strbuf_detach(&buf
, &newsize
);
309 fd
= open_output_fd(path
, ce
, to_tempfile
);
312 return error("unable to create file %s (%s)",
313 path
, strerror(errno
));
316 wrote
= write_in_full(fd
, new, size
);
318 fstat_done
= fstat_output(fd
, state
, &st
);
322 return error("unable to write file %s", path
);
326 return error("cannot create temporary submodule %s", path
);
327 if (mkdir(path
, 0777) < 0)
328 return error("cannot create submodule directory %s", path
);
331 return error("unknown file mode for %s in index", path
);
335 if (state
->refresh_cache
) {
337 lstat(ce
->name
, &st
);
338 fill_stat_cache_info(ce
, &st
);
344 * This is like 'lstat()', except it refuses to follow symlinks
345 * in the path, after skipping "skiplen".
347 static int check_path(const char *path
, int len
, struct stat
*st
, int skiplen
)
349 const char *slash
= path
+ len
;
351 while (path
< slash
&& *slash
!= '/')
353 if (!has_dirs_only_path(path
, slash
- path
, skiplen
)) {
357 return lstat(path
, st
);
361 * Write the contents from ce out to the working tree.
363 * When topath[] is not NULL, instead of writing to the working tree
364 * file named by ce, a temporary file is created by this function and
365 * its name is returned in topath[], which must be able to hold at
366 * least TEMPORARY_FILENAME_LENGTH bytes long.
368 int checkout_entry(struct cache_entry
*ce
,
369 const struct checkout
*state
, char *topath
)
371 static struct strbuf path
= STRBUF_INIT
;
375 return write_entry(ce
, topath
, state
, 1);
378 strbuf_add(&path
, state
->base_dir
, state
->base_dir_len
);
379 strbuf_add(&path
, ce
->name
, ce_namelen(ce
));
381 if (!check_path(path
.buf
, path
.len
, &st
, state
->base_dir_len
)) {
382 unsigned changed
= ce_match_stat(ce
, &st
, CE_MATCH_IGNORE_VALID
|CE_MATCH_IGNORE_SKIP_WORKTREE
);
388 "%s already exists, no checkout\n",
394 * We unlink the old file, to get the new one with the
395 * right permissions (including umask, which is nasty
396 * to emulate by hand - much easier to let the system
397 * just do the right thing)
399 if (S_ISDIR(st
.st_mode
)) {
400 /* If it is a gitlink, leave it alone! */
401 if (S_ISGITLINK(ce
->ce_mode
))
404 return error("%s is a directory", path
.buf
);
405 remove_subtree(&path
);
406 } else if (unlink(path
.buf
))
407 return error("unable to unlink old '%s' (%s)",
408 path
.buf
, strerror(errno
));
409 } else if (state
->not_new
)
412 create_directories(path
.buf
, path
.len
, state
);
413 return write_entry(ce
, path
.buf
, state
, 0);