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Merge pull request #6397 from suirad/fix-5537

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Fix for Windows: std.os.windows.DeleteFile()
This commit is contained in:
Jakub Konka 2020-09-27 21:59:29 +02:00 committed by GitHub
commit e60939bfaa
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2 changed files with 40 additions and 1 deletions
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23
lib/std/fs/test.zig
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@ -813,3 +813,26 @@ fn run_lock_file_test(contexts: []FileLockTestContext) !void {
try threads.append(try std.Thread.spawn(ctx, FileLockTestContext.run));
}
}
test "deleteDir" {
var tmp_dir = tmpDir(.{});
defer tmp_dir.cleanup();
// deleting a non-existent directory
testing.expectError(error.FileNotFound, tmp_dir.dir.deleteDir("test_dir"));
var dir = try tmp_dir.dir.makeOpenPath("test_dir", .{});
var file = try dir.createFile("test_file", .{});
file.close();
dir.close();
// deleting a non-empty directory
testing.expectError(error.DirNotEmpty, tmp_dir.dir.deleteDir("test_dir"));
dir = try tmp_dir.dir.openDir("test_dir", .{});
try dir.deleteFile("test_file");
dir.close();
// deleting an empty directory
try tmp_dir.dir.deleteDir("test_dir");
}

18
lib/std/os/windows.zig
View File

@ -764,6 +764,7 @@ pub const DeleteFileError = error{
Unexpected,
NotDir,
IsDir,
DirNotEmpty,
};
pub const DeleteFileOptions = struct {
@ -818,7 +819,7 @@ pub fn DeleteFile(sub_path_w: []const u16, options: DeleteFileOptions) DeleteFil
0,
);
switch (rc) {
.SUCCESS => return CloseHandle(tmp_handle),
.SUCCESS => CloseHandle(tmp_handle),
.OBJECT_NAME_INVALID => unreachable,
.OBJECT_NAME_NOT_FOUND => return error.FileNotFound,
.INVALID_PARAMETER => unreachable,
@ -826,6 +827,21 @@ pub fn DeleteFile(sub_path_w: []const u16, options: DeleteFileOptions) DeleteFil
.NOT_A_DIRECTORY => return error.NotDir,
else => return unexpectedStatus(rc),
}
// If a directory fails to be deleted, CloseHandle will still report success
// Check if the directory still exists and return error.DirNotEmpty if true
if (options.remove_dir) {
var basic_info: FILE_BASIC_INFORMATION = undefined;
switch (ntdll.NtQueryAttributesFile(&attr, &basic_info)) {
.SUCCESS => return error.DirNotEmpty,
.OBJECT_NAME_NOT_FOUND => return,
.OBJECT_PATH_NOT_FOUND => return,
.INVALID_PARAMETER => unreachable,
.ACCESS_DENIED => return error.AccessDenied,
.OBJECT_PATH_SYNTAX_BAD => unreachable,
else => |urc| return unexpectedStatus(urc),
}
}
}
pub const MoveFileError = error{ FileNotFound, Unexpected };