mirror of
https://github.com/SerenityOS/serenity
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7c0540a229
This has KString, KBuffer, DoubleBuffer, KBufferBuilder, IOWindow, UserOrKernelBuffer and ScopedCritical classes being moved to the Kernel/Library subdirectory. Also, move the panic and assertions handling code to that directory.
81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
/*
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* Copyright (c) 2022, Ariel Don <ariel@arieldon.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Assertions.h>
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#include <AK/StringView.h>
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#include <Kernel/FileSystem/VirtualFileSystem.h>
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#include <Kernel/Library/KLexicalPath.h>
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#include <Kernel/Tasks/Process.h>
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namespace Kernel {
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ErrorOr<FlatPtr> Process::sys$futimens(Userspace<Syscall::SC_futimens_params const*> user_params)
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{
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VERIFY_NO_PROCESS_BIG_LOCK(this);
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TRY(require_promise(Pledge::fattr));
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auto params = TRY(copy_typed_from_user(user_params));
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auto now = kgettimeofday().to_timespec();
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timespec times[2];
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if (params.times) {
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TRY(copy_from_user(times, params.times, sizeof(times)));
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if (times[0].tv_nsec == UTIME_NOW)
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times[0] = now;
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if (times[1].tv_nsec == UTIME_NOW)
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times[1] = now;
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} else {
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// According to POSIX, both access and modification times are set to
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// the current time given a nullptr.
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times[0] = now;
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times[1] = now;
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}
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auto description = TRY(open_file_description(params.fd));
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if (!description->inode())
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return EBADF;
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if (!description->custody())
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return EBADF;
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auto& atime = times[0];
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auto& mtime = times[1];
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TRY(VirtualFileSystem::the().do_utimens(credentials(), *description->custody(), atime, mtime));
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return 0;
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}
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ErrorOr<FlatPtr> Process::sys$utimensat(Userspace<Syscall::SC_utimensat_params const*> user_params)
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{
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VERIFY_NO_PROCESS_BIG_LOCK(this);
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TRY(require_promise(Pledge::fattr));
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auto params = TRY(copy_typed_from_user(user_params));
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auto now = kgettimeofday().to_timespec();
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int follow_symlink = params.flag & AT_SYMLINK_NOFOLLOW ? O_NOFOLLOW_NOERROR : 0;
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timespec times[2];
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if (params.times) {
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TRY(copy_from_user(times, params.times, sizeof(times)));
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if (times[0].tv_nsec == UTIME_NOW)
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times[0] = now;
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if (times[1].tv_nsec == UTIME_NOW)
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times[1] = now;
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} else {
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// According to POSIX, both access and modification times are set to
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// the current time given a nullptr.
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times[0] = now;
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times[1] = now;
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}
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auto path = TRY(get_syscall_path_argument(params.path));
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auto base = TRY(custody_for_dirfd(params.dirfd));
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auto& atime = times[0];
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auto& mtime = times[1];
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TRY(VirtualFileSystem::the().utimensat(credentials(), path->view(), *base, atime, mtime, follow_symlink));
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return 0;
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}
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}
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