Kernel: Rename FileDescription => OpenFileDescription

Dr. POSIX really calls these "open file description", not just
"file description", so let's call them exactly that. :^)

Kernel/Syscalls/anon_create.cpp

@@ -5,7 +5,7 @@
  */
 
 #include <Kernel/FileSystem/AnonymousFile.h>
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Memory/AnonymousVMObject.h>
 #include <Kernel/Process.h>
 
@@ -28,7 +28,7 @@ KResultOr<FlatPtr> Process::sys$anon_create(size_t size, int options)
     auto new_fd = TRY(m_fds.allocate());
     auto vmobject = TRY(Memory::AnonymousVMObject::try_create_purgeable_with_size(size, AllocationStrategy::Reserve));
     auto anon_file = TRY(AnonymousFile::try_create(move(vmobject)));
-    auto description = TRY(FileDescription::try_create(move(anon_file)));
+    auto description = TRY(OpenFileDescription::try_create(move(anon_file)));
 
     description->set_writable(true);
     description->set_readable(true);

Kernel/Syscalls/chown.cpp

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Process.h>
 
 namespace Kernel {

Kernel/Syscalls/dup2.cpp

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Process.h>
 
 namespace Kernel {

Kernel/Syscalls/execve.cpp

@@ -9,7 +9,7 @@
 #include <AK/WeakPtr.h>
 #include <Kernel/Debug.h>
 #include <Kernel/FileSystem/Custody.h>
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Memory/AllocationStrategy.h>
 #include <Kernel/Memory/MemoryManager.h>
 #include <Kernel/Memory/PageDirectory.h>
@@ -162,7 +162,7 @@ struct RequiredLoadRange {
     FlatPtr end { 0 };
 };
 
-static KResultOr<RequiredLoadRange> get_required_load_range(FileDescription& program_description)
+static KResultOr<RequiredLoadRange> get_required_load_range(OpenFileDescription& program_description)
 {
     auto& inode = *(program_description.inode());
     auto vmobject = TRY(Memory::SharedInodeVMObject::try_create_with_inode(inode));
@@ -192,7 +192,7 @@ static KResultOr<RequiredLoadRange> get_required_load_range(FileDescription& pro
     return range;
 };
 
-static KResultOr<FlatPtr> get_load_offset(const ElfW(Ehdr) & main_program_header, FileDescription& main_program_description, FileDescription* interpreter_description)
+static KResultOr<FlatPtr> get_load_offset(const ElfW(Ehdr) & main_program_header, OpenFileDescription& main_program_description, OpenFileDescription* interpreter_description)
 {
     constexpr FlatPtr load_range_start = 0x08000000;
     constexpr FlatPtr load_range_size = 65536 * PAGE_SIZE; // 2**16 * PAGE_SIZE = 256MB
@@ -251,7 +251,7 @@ enum class ShouldAllowSyscalls {
     Yes,
 };
 
-static KResultOr<LoadResult> load_elf_object(NonnullOwnPtr<Memory::AddressSpace> new_space, FileDescription& object_description,
+static KResultOr<LoadResult> load_elf_object(NonnullOwnPtr<Memory::AddressSpace> new_space, OpenFileDescription& object_description,
     FlatPtr load_offset, ShouldAllocateTls should_allocate_tls, ShouldAllowSyscalls should_allow_syscalls)
 {
     auto& inode = *(object_description.inode());
@@ -404,8 +404,8 @@ static KResultOr<LoadResult> load_elf_object(NonnullOwnPtr<Memory::AddressSpace>
 }
 
 KResultOr<LoadResult>
-Process::load(NonnullRefPtr<FileDescription> main_program_description,
-    RefPtr<FileDescription> interpreter_description, const ElfW(Ehdr) & main_program_header)
+Process::load(NonnullRefPtr<OpenFileDescription> main_program_description,
+    RefPtr<OpenFileDescription> interpreter_description, const ElfW(Ehdr) & main_program_header)
 {
     auto new_space = TRY(Memory::AddressSpace::try_create(nullptr));
 
@@ -433,8 +433,8 @@ Process::load(NonnullRefPtr<FileDescription> main_program_description,
     return interpreter_load_result;
 }
 
-KResult Process::do_exec(NonnullRefPtr<FileDescription> main_program_description, Vector<String> arguments, Vector<String> environment,
-    RefPtr<FileDescription> interpreter_description, Thread*& new_main_thread, u32& prev_flags, const ElfW(Ehdr) & main_program_header)
+KResult Process::do_exec(NonnullRefPtr<OpenFileDescription> main_program_description, Vector<String> arguments, Vector<String> environment,
+    RefPtr<OpenFileDescription> interpreter_description, Thread*& new_main_thread, u32& prev_flags, const ElfW(Ehdr) & main_program_header)
 {
     VERIFY(is_user_process());
     VERIFY(!Processor::in_critical());
@@ -707,7 +707,7 @@ static KResultOr<Vector<String>> find_shebang_interpreter_for_executable(char co
     return ENOEXEC;
 }
 
-KResultOr<RefPtr<FileDescription>> Process::find_elf_interpreter_for_executable(StringView path, ElfW(Ehdr) const& main_executable_header, size_t main_executable_header_size, size_t file_size)
+KResultOr<RefPtr<OpenFileDescription>> Process::find_elf_interpreter_for_executable(StringView path, ElfW(Ehdr) const& main_executable_header, size_t main_executable_header_size, size_t file_size)
 {
     // Not using KResultOr here because we'll want to do the same thing in userspace in the RTLD
     String interpreter_path;

Kernel/Syscalls/fcntl.cpp

@@ -5,7 +5,7 @@
  */
 
 #include <Kernel/Debug.h>
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Process.h>
 
 namespace Kernel {
@@ -16,7 +16,7 @@ KResultOr<FlatPtr> Process::sys$fcntl(int fd, int cmd, u32 arg)
     REQUIRE_PROMISE(stdio);
     dbgln_if(IO_DEBUG, "sys$fcntl: fd={}, cmd={}, arg={}", fd, cmd, arg);
     auto description = TRY(fds().file_description(fd));
-    // NOTE: The FD flags are not shared between FileDescription objects.
+    // NOTE: The FD flags are not shared between OpenFileDescription objects.
     //       This means that dup() doesn't copy the FD_CLOEXEC flag!
     switch (cmd) {
     case F_DUPFD: {

Kernel/Syscalls/fork.cpp

@@ -6,7 +6,7 @@
 
 #include <Kernel/Debug.h>
 #include <Kernel/FileSystem/Custody.h>
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Memory/Region.h>
 #include <Kernel/PerformanceManager.h>
 #include <Kernel/Process.h>

Kernel/Syscalls/ftruncate.cpp

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Process.h>
 
 namespace Kernel {

Kernel/Syscalls/get_dir_entries.cpp

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Process.h>
 
 namespace Kernel {

Kernel/Syscalls/inode_watcher.cpp

@@ -7,8 +7,8 @@
 
 #include <Kernel/API/InodeWatcherFlags.h>
 #include <Kernel/FileSystem/Custody.h>
-#include <Kernel/FileSystem/FileDescription.h>
 #include <Kernel/FileSystem/InodeWatcher.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Process.h>
 
 namespace Kernel {
@@ -20,7 +20,7 @@ KResultOr<FlatPtr> Process::sys$create_inode_watcher(u32 flags)
 
     auto fd_allocation = TRY(m_fds.allocate());
     auto watcher = TRY(InodeWatcher::try_create());
-    auto description = TRY(FileDescription::try_create(move(watcher)));
+    auto description = TRY(OpenFileDescription::try_create(move(watcher)));
 
     description->set_readable(true);
     if (flags & static_cast<unsigned>(InodeWatcherFlags::Nonblock))

Kernel/Syscalls/ioctl.cpp

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Process.h>
 #include <LibC/sys/ioctl_numbers.h>
 

Kernel/Syscalls/lseek.cpp

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Process.h>
 
 namespace Kernel {

Kernel/Syscalls/mmap.cpp

@@ -7,7 +7,7 @@
 
 #include <Kernel/Arch/x86/MSR.h>
 #include <Kernel/Arch/x86/SmapDisabler.h>
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Memory/AnonymousVMObject.h>
 #include <Kernel/Memory/MemoryManager.h>
 #include <Kernel/Memory/PageDirectory.h>

Kernel/Syscalls/module.cpp

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/FileSystem/VirtualFileSystem.h>
 #include <Kernel/KSyms.h>
 #include <Kernel/Module.h>

Kernel/Syscalls/read.cpp

@@ -5,7 +5,7 @@
  */
 
 #include <Kernel/Debug.h>
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Process.h>
 
 namespace Kernel {

Kernel/Syscalls/select.cpp

@@ -7,7 +7,7 @@
 #include <AK/ScopeGuard.h>
 #include <AK/Time.h>
 #include <Kernel/Debug.h>
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Process.h>
 
 namespace Kernel {

Kernel/Syscalls/sendfd.cpp

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Net/LocalSocket.h>
 #include <Kernel/Process.h>
 

Kernel/Syscalls/socket.cpp

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Net/LocalSocket.h>
 #include <Kernel/Process.h>
 #include <Kernel/UnixTypes.h>
@@ -19,7 +19,7 @@ namespace Kernel {
             REQUIRE_PROMISE(unix);                \
     } while (0)
 
-void Process::setup_socket_fd(int fd, NonnullRefPtr<FileDescription> description, int type)
+void Process::setup_socket_fd(int fd, NonnullRefPtr<OpenFileDescription> description, int type)
 {
     description->set_readable(true);
     description->set_writable(true);
@@ -40,7 +40,7 @@ KResultOr<FlatPtr> Process::sys$socket(int domain, int type, int protocol)
         return EACCES;
     auto fd_allocation = TRY(m_fds.allocate());
     auto socket = TRY(Socket::create(domain, type, protocol));
-    auto description = TRY(FileDescription::try_create(socket));
+    auto description = TRY(OpenFileDescription::try_create(socket));
     setup_socket_fd(fd_allocation.fd, move(description), type);
     return fd_allocation.fd;
 }
@@ -113,7 +113,7 @@ KResultOr<FlatPtr> Process::sys$accept4(Userspace<const Syscall::SC_accept4_para
         TRY(copy_to_user(user_address_size, &address_size));
     }
 
-    auto accepted_socket_description = TRY(FileDescription::try_create(*accepted_socket));
+    auto accepted_socket_description = TRY(OpenFileDescription::try_create(*accepted_socket));
 
     accepted_socket_description->set_readable(true);
     accepted_socket_description->set_writable(true);

Kernel/Syscalls/ttyname.cpp

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Process.h>
 #include <Kernel/TTY/MasterPTY.h>
 #include <Kernel/TTY/TTY.h>

Kernel/Syscalls/write.cpp

@@ -6,7 +6,7 @@
 
 #include <AK/NumericLimits.h>
 #include <Kernel/Debug.h>
-#include <Kernel/FileSystem/FileDescription.h>
+#include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Process.h>
 
 namespace Kernel {
@@ -54,7 +54,7 @@ KResultOr<FlatPtr> Process::sys$writev(int fd, Userspace<const struct iovec*> io
     return nwritten;
 }
 
-KResultOr<FlatPtr> Process::do_write(FileDescription& description, const UserOrKernelBuffer& data, size_t data_size)
+KResultOr<FlatPtr> Process::do_write(OpenFileDescription& description, const UserOrKernelBuffer& data, size_t data_size)
 {
     size_t total_nwritten = 0;