certmgr/certmgr/Core/Storage/FileStorage.cs

namespace CertMgr.Core.Storage;

public sealed class FileStorage : Storage<FileStorageContext>
{
    protected override async Task<StoreResult> DoWriteAsync(Stream source, FileStorageContext context, CancellationToken cancellationToken)
    {
        using (FileStream fs = new FileStream(context.Path, (FileMode)context.Mode, FileAccess.Write, FileShare.None))
        {
            await source.CopyToAsync(fs, cancellationToken).ConfigureAwait(false);
        }

        return StoreResult.CreateSuccess();
    }

    protected override async Task<StoreResult> DoReadAsync(Stream target, FileStorageContext context, CancellationToken cancellationToken)
    {
        using (FileStream fs = new FileStream(context.Path, (FileMode)context.Mode, FileAccess.Read, FileShare.Read))
        {
            await fs.CopyToAsync(target, cancellationToken).ConfigureAwait(false);
        }

        return StoreResult.CreateSuccess();
    }
}