};
extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
+extern int has_symlink_leading_path(const char *name, char *last_symlink);
extern struct alternate_object_database {
struct alternate_object_database *next;
--- /dev/null
+#include "cache.h"
+
+int has_symlink_leading_path(const char *name, char *last_symlink)
+{
+ char path[PATH_MAX];
+ const char *sp, *ep;
+ char *dp;
+
+ sp = name;
+ dp = path;
+
+ if (last_symlink && *last_symlink) {
+ size_t last_len = strlen(last_symlink);
+ size_t len = strlen(name);
+ if (last_len < len &&
+ !strncmp(name, last_symlink, last_len) &&
+ name[last_len] == '/')
+ return 1;
+ *last_symlink = '\0';
+ }
+
+ while (1) {
+ size_t len;
+ struct stat st;
+
+ ep = strchr(sp, '/');
+ if (!ep)
+ break;
+ len = ep - sp;
+ if (PATH_MAX <= dp + len - path + 2)
+ return 0; /* new name is longer than that??? */
+ memcpy(dp, sp, len);
+ dp[len] = 0;
+
+ if (lstat(path, &st))
+ return 0;
+ if (S_ISLNK(st.st_mode)) {
+ if (last_symlink)
+ strcpy(last_symlink, path);
+ return 1;
+ }
+
+ dp[len++] = '/';
+ dp = dp + len;
+ sp = ep + 1;
+ }
+ return 0;
+}