#include "cache.h"
#include "blob.h"
-static void create_directories(const char *path, struct checkout *state)
+static void create_directories(const char *path, const struct checkout *state)
{
int len = strlen(path);
char *buf = xmalloc(len + 1);
const char *slash = path;
while ((slash = strchr(slash+1, '/')) != NULL) {
+ struct stat st;
+ int stat_status;
+
len = slash - path;
memcpy(buf, path, len);
buf[len] = 0;
+
+ if (len <= state->base_dir_len)
+ /*
+ * checkout-index --prefix=<dir>; <dir> is
+ * allowed to be a symlink to an existing
+ * directory.
+ */
+ stat_status = stat(buf, &st);
+ else
+ /*
+ * if there currently is a symlink, we would
+ * want to replace it with a real directory.
+ */
+ stat_status = lstat(buf, &st);
+
+ if (!stat_status && S_ISDIR(st.st_mode))
+ continue; /* ok, it is already a directory. */
+
+ /*
+ * We know stat_status == 0 means something exists
+ * there and this mkdir would fail, but that is an
+ * error codepath; we do not care, as we unlink and
+ * mkdir again in such a case.
+ */
if (mkdir(buf, 0777)) {
- if (errno == EEXIST) {
- struct stat st;
- if (len > state->base_dir_len && state->force && !unlink(buf) && !mkdir(buf, 0777))
- continue;
- if (!stat(buf, &st) && S_ISDIR(st.st_mode))
- continue; /* ok */
- }
+ if (errno == EEXIST && state->force &&
+ !unlink(buf) && !mkdir(buf, 0777))
+ continue;
die("cannot create directory at %s", buf);
}
}
struct dirent *de;
char pathbuf[PATH_MAX];
char *name;
-
+
if (!dir)
- die("cannot opendir %s", path);
+ die("cannot opendir %s (%s)", path, strerror(errno));
strcpy(pathbuf, path);
name = pathbuf + strlen(path);
*name++ = '/';
continue;
strcpy(name, de->d_name);
if (lstat(pathbuf, &st))
- die("cannot lstat %s", pathbuf);
+ die("cannot lstat %s (%s)", pathbuf, strerror(errno));
if (S_ISDIR(st.st_mode))
remove_subtree(pathbuf);
else if (unlink(pathbuf))
- die("cannot unlink %s", pathbuf);
+ die("cannot unlink %s (%s)", pathbuf, strerror(errno));
}
closedir(dir);
if (rmdir(path))
- die("cannot rmdir %s", path);
+ die("cannot rmdir %s (%s)", path, strerror(errno));
}
static int create_file(const char *path, unsigned int mode)
return open(path, O_WRONLY | O_CREAT | O_EXCL, mode);
}
-static int write_entry(struct cache_entry *ce, char *path, struct checkout *state, int to_tempfile)
+static void *read_blob_entry(struct cache_entry *ce, const char *path, unsigned long *size)
{
- int fd;
- void *new;
- unsigned long size;
- long wrote;
enum object_type type;
+ void *new = read_sha1_file(ce->sha1, &type, size);
- new = read_sha1_file(ce->sha1, &type, &size);
- if (!new || type != OBJ_BLOB) {
- if (new)
- free(new);
- return error("git-checkout-index: unable to read sha1 file of %s (%s)",
- path, sha1_to_hex(ce->sha1));
+ if (new) {
+ if (type == OBJ_BLOB)
+ return new;
+ free(new);
}
+ return NULL;
+}
+
+static int write_entry(struct cache_entry *ce, char *path, const struct checkout *state, int to_tempfile)
+{
+ int fd;
+ long wrote;
+
switch (ntohl(ce->ce_mode) & S_IFMT) {
- char *buf;
+ char *buf, *new;
+ unsigned long size;
case S_IFREG:
+ new = read_blob_entry(ce, path, &size);
+ if (!new)
+ return error("git-checkout-index: unable to read sha1 file of %s (%s)",
+ path, sha1_to_hex(ce->sha1));
+
+ /*
+ * Convert from git internal format to working tree format
+ */
+ buf = convert_to_working_tree(ce->name, new, &size);
+ if (buf) {
+ free(new);
+ new = buf;
+ }
+
if (to_tempfile) {
strcpy(path, ".merge_file_XXXXXX");
fd = mkstemp(path);
path, strerror(errno));
}
- /*
- * Convert from git internal format to working tree format
- */
- buf = convert_to_working_tree(ce->name, new, &size);
- if (buf) {
- free(new);
- new = buf;
- }
-
wrote = write_in_full(fd, new, size);
close(fd);
free(new);
return error("git-checkout-index: unable to write file %s", path);
break;
case S_IFLNK:
+ new = read_blob_entry(ce, path, &size);
+ if (!new)
+ return error("git-checkout-index: unable to read sha1 file of %s (%s)",
+ path, sha1_to_hex(ce->sha1));
if (to_tempfile || !has_symlinks) {
if (to_tempfile) {
strcpy(path, ".merge_link_XXXXXX");
"symlink %s (%s)", path, strerror(errno));
}
break;
+ case S_IFGITLINK:
+ if (to_tempfile)
+ return error("git-checkout-index: cannot create temporary subproject %s", path);
+ if (mkdir(path, 0777) < 0)
+ return error("git-checkout-index: cannot create subproject directory %s", path);
+ break;
default:
- free(new);
return error("git-checkout-index: unknown file mode for %s", path);
}
return 0;
}
-int checkout_entry(struct cache_entry *ce, struct checkout *state, char *topath)
+int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath)
{
static char path[PATH_MAX + 1];
struct stat st;
*/
unlink(path);
if (S_ISDIR(st.st_mode)) {
+ /* If it is a gitlink, leave it alone! */
+ if (S_ISGITLINK(ntohl(ce->ce_mode)))
+ return 0;
if (!state->force)
return error("%s is a directory", path);
remove_subtree(path);