Introduce remove_or_warn function

This patch introduces the remove_or_warn function which is a
generalised version of the {unlink,rmdir}_or_warn functions.  It takes
an additional parameter indicating the mode of the file to be removed.

The patch also modifies certain functions to use remove_or_warn
where appropriate, and adds a test case for a bug fixed by the use
of remove_or_warn.

Signed-off-by: Peter Collingbourne <peter@pcc.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/apply.c b/builtin/apply.c
index 7ca90472c10eed8535e76b1e0ec25c92af7cff05..65a594c9851689b724cd6a243476679e724fb590 100644 (file)
--- a/builtin/apply.c
+++ b/builtin/apply.c
@@ -3144,11 +3144,7 @@ static void remove_file(struct patch *patch, int rmdir_empty)
                        die("unable to remove %s from index", patch->old_name);
        }
        if (!cached) {
-               if (S_ISGITLINK(patch->old_mode)) {
-                       if (rmdir(patch->old_name))
-                               warning("unable to remove submodule %s",
-                                       patch->old_name);
-               } else if (!unlink_or_warn(patch->old_name) && rmdir_empty) {
+               if (!remove_or_warn(patch->old_mode, patch->old_name) && rmdir_empty) {
                        remove_path(patch->old_name);
                }
        }

diff --git a/git-compat-util.h b/git-compat-util.h
index 67ea4c89f5f9db58bf5bf5dcde9d76e6fc511475..3ebf96690aa20eca0f7147d14826a6a4c4bdf777 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -473,5 +473,10 @@ int unlink_or_warn(const char *path);
  * Likewise for rmdir(2).
  */
 int rmdir_or_warn(const char *path);
+/*
+ * Calls the correct function out of {unlink,rmdir}_or_warn based on
+ * the supplied file mode.
+ */
+int remove_or_warn(unsigned int mode, const char *path);
 
 #endif

diff --git a/t/t4134-apply-submodule.sh b/t/t4134-apply-submodule.sh
new file mode 100755 (executable)
index 0000000..1b82f93
--- /dev/null
+++ b/t/t4134-apply-submodule.sh
@@ -0,0 +1,38 @@
+#!/bin/sh
+#
+# Copyright (c) 2010 Peter Collingbourne
+#
+
+test_description='git apply submodule tests'
+
+. ./test-lib.sh
+
+test_expect_success setup '
+       cat > create-sm.patch <<EOF
+diff --git a/dir/sm b/dir/sm
+new file mode 160000
+index 0000000..0123456
+--- /dev/null
++++ b/dir/sm
+@@ -0,0 +1 @@
++Subproject commit 0123456789abcdef0123456789abcdef01234567
+EOF
+       cat > remove-sm.patch <<EOF
+diff --git a/dir/sm b/dir/sm
+deleted file mode 160000
+index 0123456..0000000
+--- a/dir/sm
++++ /dev/null
+@@ -1 +0,0 @@
+-Subproject commit 0123456789abcdef0123456789abcdef01234567
+EOF
+'
+
+test_expect_success 'removing a submodule also removes all leading subdirectories' '
+       git apply --index create-sm.patch &&
+       test -d dir/sm &&
+       git apply --index remove-sm.patch &&
+       test \! -d dir
+'
+
+test_done

diff --git a/unpack-trees.c b/unpack-trees.c
index 75f54cac97f62ddaad736c2cd582cc6cdeaaebfa..c29a9e067ff362063d6626e8e4d1e4466d63b8af 100644 (file)
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -67,16 +67,8 @@ static void unlink_entry(struct cache_entry *ce)
 {
        if (has_symlink_or_noent_leading_path(ce->name, ce_namelen(ce)))
                return;
-       if (S_ISGITLINK(ce->ce_mode)) {
-               if (rmdir(ce->name)) {
-                       warning("unable to rmdir %s: %s",
-                               ce->name, strerror(errno));
-                       return;
-               }
-       }
-       else
-               if (unlink_or_warn(ce->name))
-                       return;
+       if (remove_or_warn(ce->ce_mode, ce->name))
+               return;
        schedule_dir_for_removal(ce->name, ce_namelen(ce));
 }
 

diff --git a/wrapper.c b/wrapper.c
index 4017bff6bb3f658ed745da4f9a3a7a79fb38fb08..10a6750795b287beabd50561402ffa8867f3e283 100644 (file)
--- a/wrapper.c
+++ b/wrapper.c
@@ -333,3 +333,8 @@ int rmdir_or_warn(const char *file)
 {
        return warn_if_unremovable("rmdir", file, rmdir(file));
 }
+
+int remove_or_warn(unsigned int mode, const char *file)
+{
+       return S_ISGITLINK(mode) ? rmdir_or_warn(file) : unlink_or_warn(file);
+}