/* * Copyright (c) 2018-2020, Andreas Kling * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include namespace Kernel { int Process::sys$fstat(int fd, Userspace user_statbuf) { REQUIRE_PROMISE(stdio); auto description = file_description(fd); if (!description) return -EBADF; stat buffer = {}; int rc = description->stat(buffer); if (!copy_to_user(user_statbuf, &buffer)) return -EFAULT; return rc; } int Process::sys$stat(Userspace user_params) { REQUIRE_PROMISE(rpath); Syscall::SC_stat_params params; if (!copy_from_user(¶ms, user_params)) return -EFAULT; auto path = get_syscall_path_argument(params.path); if (path.is_error()) return path.error(); auto metadata_or_error = VFS::the().lookup_metadata(path.value(), current_directory(), params.follow_symlinks ? 0 : O_NOFOLLOW_NOERROR); if (metadata_or_error.is_error()) return metadata_or_error.error(); stat statbuf; auto result = metadata_or_error.value().stat(statbuf); if (result.is_error()) return result; if (!copy_to_user(params.statbuf, &statbuf)) return -EFAULT; return 0; } }