Fix replacing of a directory with a file/symlink in git-checkout-cache

The symlink case had never worked, and the file case was broken by the
O_EXCL change because the error return changed from EISDIR to EEXIST.

Fix both problems by just moving the test for an existing directory to a
more logical place.

diff --git a/entry.c b/entry.c
index 792ea73..15b8fda 100644 (file)
--- a/entry.c
+++ b/entry.c
@@ -57,19 +57,10 @@ static void remove_subtree(const char *path)
                die("cannot rmdir %s", path);
 }
 
-static int create_file(const char *path, unsigned int mode, int force)
+static int create_file(const char *path, unsigned int mode)
 {
-       int fd;
-
        mode = (mode & 0100) ? 0777 : 0666;
-       fd = open(path, O_WRONLY | O_TRUNC | O_CREAT | O_EXCL, mode);
-       if (fd < 0) {
-               if (errno == EISDIR && force) {
-                       remove_subtree(path);
-                       fd = open(path, O_WRONLY | O_TRUNC | O_CREAT | O_EXCL, mode);
-               }
-       }
-       return fd;
+       return open(path, O_WRONLY | O_TRUNC | O_CREAT | O_EXCL, mode);
 }
 
 static int write_entry(struct cache_entry *ce, const char *path, struct checkout *state)
@@ -90,7 +81,7 @@ static int write_entry(struct cache_entry *ce, const char *path, struct checkout
        }
        switch (ntohl(ce->ce_mode) & S_IFMT) {
        case S_IFREG:
-               fd = create_file(path, ntohl(ce->ce_mode), state->force);
+               fd = create_file(path, ntohl(ce->ce_mode));
                if (fd < 0) {
                        free(new);
                        return error("git-checkout-cache: unable to create file %s (%s)",
@@ -151,6 +142,11 @@ int checkout_entry(struct cache_entry *ce, struct checkout *state)
                 * just do the right thing)
                 */
                unlink(path);
+               if (S_ISDIR(st.st_mode)) {
+                       if (!state->force)
+                               return error("%s is a directory", path);
+                       remove_subtree(path);
+               }
        } else if (state->not_new) 
                return 0;
        create_directories(path, state);