From: Mark Mentovai Date: Sat, 24 May 2025 03:40:46 +0000 (-0400) Subject: apply: set file mode when --reverse creates a deleted file X-Git-Tag: v2.50.0-rc1~12^2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=1d9a66493be9fef38e531da587dd47f6f17ea483;p=thirdparty%2Fgit.git apply: set file mode when --reverse creates a deleted file Commit 01aff0a (apply: correctly reverse patch's pre- and post-image mode bits, 2023-12-26) revised reverse_patches() to maintain the desired property that when only one of patch::old_mode and patch::new_mode is set, the mode will be carried in old_mode. That property is generally correct, with one notable exception: when creating a file, only new_mode will be set. Since reversing a deletion results in a creation, new_mode must be set in that case. Omitting handling for this case means that reversing a patch that removes an executable file will not result in the executable permission being set on the re-created file. Existing test coverage for file modes focuses only on mode changes of existing files. Swap old_mode and new_mode in reverse_patches() for what's represented in the patch as a file deletion, as it is transformed into a file creation under reversal. This causes git apply --reverse to set the executable permission properly when re-creating a deleted executable file. Add tests ensuring that git apply sets file modes correctly on file creation, both in the forward and reverse directions. Signed-off-by: Mark Mentovai Signed-off-by: Junio C Hamano --- diff --git a/apply.c b/apply.c index 381d2e3652..8bbe6ed224 100644 --- a/apply.c +++ b/apply.c @@ -2219,7 +2219,7 @@ static void reverse_patches(struct patch *p) struct fragment *frag = p->fragments; SWAP(p->new_name, p->old_name); - if (p->new_mode) + if (p->new_mode || p->is_delete) SWAP(p->new_mode, p->old_mode); SWAP(p->is_new, p->is_delete); SWAP(p->lines_added, p->lines_deleted); diff --git a/t/t4129-apply-samemode.sh b/t/t4129-apply-samemode.sh index bf4e7609dc..1d6317bd71 100755 --- a/t/t4129-apply-samemode.sh +++ b/t/t4129-apply-samemode.sh @@ -102,14 +102,23 @@ test_expect_success POSIXPERM 'do not use core.sharedRepository for working tree ) ' +test_file_mode_common () { + if test "$1" = "000000" + then + test_must_be_empty "$2" + else + test_grep "^$1 " "$2" + fi +} + test_file_mode_staged () { git ls-files --stage -- "$2" >ls-files-output && - test_grep "^$1 " ls-files-output + test_file_mode_common "$1" ls-files-output } test_file_mode_HEAD () { git ls-tree HEAD -- "$2" >ls-tree-output && - test_grep "^$1 " ls-tree-output + test_file_mode_common "$1" ls-tree-output } test_expect_success 'git apply respects core.fileMode' ' @@ -189,6 +198,158 @@ test_expect_success 'git apply --reverse warns about incorrect file modes' ' test_file_mode_HEAD 100755 mode_test ' +test_expect_success 'setup: git apply [--reverse] restores file modes (change_x_to_notx)' ' + test_config core.fileMode false && + + touch change_x_to_notx && + git add --chmod=+x change_x_to_notx && + test_file_mode_staged 100755 change_x_to_notx && + test_tick && git commit -m "add change_x_to_notx as executable" && + test_file_mode_HEAD 100755 change_x_to_notx && + + git add --chmod=-x change_x_to_notx && + test_file_mode_staged 100644 change_x_to_notx && + test_tick && git commit -m "make change_x_to_notx not executable" && + test_file_mode_HEAD 100644 change_x_to_notx && + + git rm change_x_to_notx && + test_file_mode_staged 000000 change_x_to_notx && + test_tick && git commit -m "remove change_x_to_notx" && + test_file_mode_HEAD 000000 change_x_to_notx && + + git format-patch -o patches -3 && + mv patches/0001-* change_x_to_notx-0001-create-0755.patch && + mv patches/0002-* change_x_to_notx-0002-chmod-0644.patch && + mv patches/0003-* change_x_to_notx-0003-delete.patch && + + test_grep "^new file mode 100755$" change_x_to_notx-0001-create-0755.patch && + test_grep "^old mode 100755$" change_x_to_notx-0002-chmod-0644.patch && + test_grep "^new mode 100644$" change_x_to_notx-0002-chmod-0644.patch && + test_grep "^deleted file mode 100644$" change_x_to_notx-0003-delete.patch && + + git tag change_x_to_notx_initial +' + +test_expect_success 'git apply restores file modes (change_x_to_notx)' ' + test_config core.fileMode false && + git reset --hard change_x_to_notx_initial && + + git apply --index change_x_to_notx-0001-create-0755.patch && + test_file_mode_staged 100755 change_x_to_notx && + test_tick && git commit -m "redo: add change_x_to_notx as executable" && + test_file_mode_HEAD 100755 change_x_to_notx && + + git apply --index change_x_to_notx-0002-chmod-0644.patch 2>err && + test_grep ! "has type 100.*, expected 100.*" err && + test_file_mode_staged 100644 change_x_to_notx && + test_tick && git commit -m "redo: make change_x_to_notx not executable" && + test_file_mode_HEAD 100644 change_x_to_notx && + + git apply --index change_x_to_notx-0003-delete.patch 2>err && + test_grep ! "has type 100.*, expected 100.*" err && + test_file_mode_staged 000000 change_x_to_notx && + test_tick && git commit -m "redo: remove change_notx_to_x" && + test_file_mode_HEAD 000000 change_x_to_notx +' + +test_expect_success 'git apply --reverse restores file modes (change_x_to_notx)' ' + test_config core.fileMode false && + git reset --hard change_x_to_notx_initial && + + git apply --index --reverse change_x_to_notx-0003-delete.patch && + test_file_mode_staged 100644 change_x_to_notx && + test_tick && git commit -m "undo: remove change_x_to_notx" && + test_file_mode_HEAD 100644 change_x_to_notx && + + git apply --index --reverse change_x_to_notx-0002-chmod-0644.patch 2>err && + test_grep ! "has type 100.*, expected 100.*" err && + test_file_mode_staged 100755 change_x_to_notx && + test_tick && git commit -m "undo: make change_x_to_notx not executable" && + test_file_mode_HEAD 100755 change_x_to_notx && + + git apply --index --reverse change_x_to_notx-0001-create-0755.patch 2>err && + test_grep ! "has type 100.*, expected 100.*" err && + test_file_mode_staged 000000 change_x_to_notx && + test_tick && git commit -m "undo: add change_x_to_notx as executable" && + test_file_mode_HEAD 000000 change_x_to_notx +' + +test_expect_success 'setup: git apply [--reverse] restores file modes (change_notx_to_x)' ' + test_config core.fileMode false && + + touch change_notx_to_x && + git add --chmod=-x change_notx_to_x && + test_file_mode_staged 100644 change_notx_to_x && + test_tick && git commit -m "add change_notx_to_x as not executable" && + test_file_mode_HEAD 100644 change_notx_to_x && + + git add --chmod=+x change_notx_to_x && + test_file_mode_staged 100755 change_notx_to_x && + test_tick && git commit -m "make change_notx_to_x executable" && + test_file_mode_HEAD 100755 change_notx_to_x && + + git rm change_notx_to_x && + test_file_mode_staged 000000 change_notx_to_x && + test_tick && git commit -m "remove change_notx_to_x" && + test_file_mode_HEAD 000000 change_notx_to_x && + + git format-patch -o patches -3 && + mv patches/0001-* change_notx_to_x-0001-create-0644.patch && + mv patches/0002-* change_notx_to_x-0002-chmod-0755.patch && + mv patches/0003-* change_notx_to_x-0003-delete.patch && + + test_grep "^new file mode 100644$" change_notx_to_x-0001-create-0644.patch && + test_grep "^old mode 100644$" change_notx_to_x-0002-chmod-0755.patch && + test_grep "^new mode 100755$" change_notx_to_x-0002-chmod-0755.patch && + test_grep "^deleted file mode 100755$" change_notx_to_x-0003-delete.patch && + + git tag change_notx_to_x_initial +' + +test_expect_success 'git apply restores file modes (change_notx_to_x)' ' + test_config core.fileMode false && + git reset --hard change_notx_to_x_initial && + + git apply --index change_notx_to_x-0001-create-0644.patch && + test_file_mode_staged 100644 change_notx_to_x && + test_tick && git commit -m "redo: add change_notx_to_x as not executable" && + test_file_mode_HEAD 100644 change_notx_to_x && + + git apply --index change_notx_to_x-0002-chmod-0755.patch 2>err && + test_grep ! "has type 100.*, expected 100.*" err && + test_file_mode_staged 100755 change_notx_to_x && + test_tick && git commit -m "redo: make change_notx_to_x executable" && + test_file_mode_HEAD 100755 change_notx_to_x && + + git apply --index change_notx_to_x-0003-delete.patch && + test_grep ! "has type 100.*, expected 100.*" err && + test_file_mode_staged 000000 change_notx_to_x && + test_tick && git commit -m "undo: remove change_notx_to_x" && + test_file_mode_HEAD 000000 change_notx_to_x +' + +test_expect_success 'git apply --reverse restores file modes (change_notx_to_x)' ' + test_config core.fileMode false && + git reset --hard change_notx_to_x_initial && + + git apply --index --reverse change_notx_to_x-0003-delete.patch && + test_file_mode_staged 100755 change_notx_to_x && + test_tick && git commit -m "undo: remove change_notx_to_x" && + test_file_mode_HEAD 100755 change_notx_to_x && + + git apply --index --reverse change_notx_to_x-0002-chmod-0755.patch 2>err && + test_grep ! "has type 100.*, expected 100.*" err && + test_file_mode_staged 100644 change_notx_to_x && + test_tick && git commit -m "undo: make change_notx_to_x executable" && + test_file_mode_HEAD 100644 change_notx_to_x && + + git apply --index --reverse change_notx_to_x-0001-create-0644.patch 2>err && + test_grep ! "has type 100.*, expected 100.*" err && + test_file_mode_staged 000000 change_notx_to_x && + test_tick && git commit -m "undo: add change_notx_to_x as not executable" && + test_file_mode_HEAD 000000 change_notx_to_x +' + test_expect_success POSIXPERM 'patch mode for new file is canonicalized' ' cat >patch <<-\EOF && diff --git a/non-canon b/non-canon