Kernel+LibC: Move errno definitions to Kernel/API/POSIX

This fixes at least half of our LibC includes in the kernel. The source of truth for errno codes and their description strings now lives in Kernel/API/POSIX/errno.h as an enumeration, which LibC includes.
2025-07-26 07:27:45 +00:00 · 2021-09-12 11:29:28 +00:00 · 2021-09-12 11:29:28 +00:00 · 69ef211925
commit 69ef211925
parent 0cca6cef95
23 changed files with 123 additions and 183 deletions
--- a/Kernel/API/POSIX/errno.h
+++ b/Kernel/API/POSIX/errno.h
@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#define ENUMERATE_ERRNO_CODES(E)                                      \
+    E(ESUCCESS, "Success (not an error)")                             \
+    E(EPERM, "Operation not permitted")                               \
+    E(ENOENT, "No such file or directory")                            \
+    E(ESRCH, "No such process")                                       \
+    E(EINTR, "Interrupted syscall")                                   \
+    E(EIO, "I/O error")                                               \
+    E(ENXIO, "No such device or address")                             \
+    E(E2BIG, "Argument list too long")                                \
+    E(ENOEXEC, "Exec format error")                                   \
+    E(EBADF, "Bad fd number")                                         \
+    E(ECHILD, "No child processes")                                   \
+    E(EAGAIN, "Try again")                                            \
+    E(ENOMEM, "Out of memory")                                        \
+    E(EACCES, "Permission denied")                                    \
+    E(EFAULT, "Bad address")                                          \
+    E(ENOTBLK, "Block device required")                               \
+    E(EBUSY, "Device or resource busy")                               \
+    E(EEXIST, "File already exists")                                  \
+    E(EXDEV, "Cross-device link")                                     \
+    E(ENODEV, "No such device")                                       \
+    E(ENOTDIR, "Not a directory")                                     \
+    E(EISDIR, "Is a directory")                                       \
+    E(EINVAL, "Invalid argument")                                     \
+    E(ENFILE, "File table overflow")                                  \
+    E(EMFILE, "Too many open files")                                  \
+    E(ENOTTY, "Not a TTY")                                            \
+    E(ETXTBSY, "Text file busy")                                      \
+    E(EFBIG, "File too large")                                        \
+    E(ENOSPC, "No space left on device")                              \
+    E(ESPIPE, "Illegal seek")                                         \
+    E(EROFS, "Read-only filesystem")                                  \
+    E(EMLINK, "Too many links")                                       \
+    E(EPIPE, "Broken pipe")                                           \
+    E(ERANGE, "Range error")                                          \
+    E(ENAMETOOLONG, "Name too long")                                  \
+    E(ELOOP, "Too many symlinks")                                     \
+    E(EOVERFLOW, "Overflow")                                          \
+    E(EOPNOTSUPP, "Operation not supported")                          \
+    E(ENOSYS, "No such syscall")                                      \
+    E(ENOTIMPL, "Not implemented")                                    \
+    E(EAFNOSUPPORT, "Address family not supported")                   \
+    E(ENOTSOCK, "Not a socket")                                       \
+    E(EADDRINUSE, "Address in use")                                   \
+    E(EWHYTHO, "Failed without setting an error code (bug!)")         \
+    E(ENOTEMPTY, "Directory not empty")                               \
+    E(EDOM, "Math argument out of domain")                            \
+    E(ECONNREFUSED, "Connection refused")                             \
+    E(EHOSTDOWN, "Host is down")                                      \
+    E(EADDRNOTAVAIL, "Address not available")                         \
+    E(EISCONN, "Already connected")                                   \
+    E(ECONNABORTED, "Connection aborted")                             \
+    E(EALREADY, "Connection already in progress")                     \
+    E(ECONNRESET, "Connection reset")                                 \
+    E(EDESTADDRREQ, "Destination address required")                   \
+    E(EHOSTUNREACH, "Host unreachable")                               \
+    E(EILSEQ, "Illegal byte sequence")                                \
+    E(EMSGSIZE, "Message size")                                       \
+    E(ENETDOWN, "Network down")                                       \
+    E(ENETUNREACH, "Network unreachable")                             \
+    E(ENETRESET, "Network reset")                                     \
+    E(ENOBUFS, "No buffer space")                                     \
+    E(ENOLCK, "No lock available")                                    \
+    E(ENOMSG, "No message")                                           \
+    E(ENOPROTOOPT, "No protocol option")                              \
+    E(ENOTCONN, "Not connected")                                      \
+    E(ESHUTDOWN, "Transport endpoint has shutdown")                   \
+    E(ETOOMANYREFS, "Too many references")                            \
+    E(ESOCKTNOSUPPORT, "Socket type not supported")                   \
+    E(EPROTONOSUPPORT, "Protocol not supported")                      \
+    E(EDEADLK, "Resource deadlock would occur")                       \
+    E(ETIMEDOUT, "Timed out")                                         \
+    E(EPROTOTYPE, "Wrong protocol type")                              \
+    E(EINPROGRESS, "Operation in progress")                           \
+    E(ENOTHREAD, "No such thread")                                    \
+    E(EPROTO, "Protocol error")                                       \
+    E(ENOTSUP, "Not supported")                                       \
+    E(EPFNOSUPPORT, "Protocol family not supported")                  \
+    E(EDIRINTOSELF, "Cannot make directory a subdirectory of itself") \
+    E(EDQUOT, "Quota exceeded")                                       \
+    E(ENOTRECOVERABLE, "State not recoverable")                       \
+    E(EMAXERRNO, "The highest errno +1 :^)")
+
+enum ErrnoCode {
+#define __ENUMERATE_ERRNO_CODE(c, s) c,
+    ENUMERATE_ERRNO_CODES(__ENUMERATE_ERRNO_CODE)
+#undef __ENUMERATE_ERRNO_CODE
+};
--- a/Kernel/Devices/FullDevice.cpp
+++ b/Kernel/Devices/FullDevice.cpp
@ -5,10 +5,10 @@
 */

 #include <AK/Memory.h>
+#include <Kernel/API/POSIX/errno.h>
 #include <Kernel/Devices/DeviceManagement.h>
 #include <Kernel/Devices/FullDevice.h>
 #include <Kernel/Sections.h>
-#include <LibC/errno_numbers.h>

 namespace Kernel {

--- a/Kernel/FileSystem/Ext2FileSystem.cpp
+++ b/Kernel/FileSystem/Ext2FileSystem.cpp
@ -9,6 +9,7 @@
 #include <AK/MemoryStream.h>
 #include <AK/StdLibExtras.h>
 #include <AK/StringView.h>
+#include <Kernel/API/POSIX/errno.h>
 #include <Kernel/Debug.h>
 #include <Kernel/Devices/BlockDevice.h>
 #include <Kernel/FileSystem/Ext2FileSystem.h>
@ -16,7 +17,6 @@
 #include <Kernel/FileSystem/ext2_fs.h>
 #include <Kernel/Process.h>
 #include <Kernel/UnixTypes.h>
-#include <LibC/errno_numbers.h>

 namespace Kernel {

--- a/Kernel/FileSystem/InodeFile.cpp
+++ b/Kernel/FileSystem/InodeFile.cpp
@ -5,6 +5,7 @@
 */

 #include <AK/StringView.h>
+#include <Kernel/API/POSIX/errno.h>
 #include <Kernel/FileSystem/Inode.h>
 #include <Kernel/FileSystem/InodeFile.h>
 #include <Kernel/FileSystem/OpenFileDescription.h>
@ -12,7 +13,6 @@
 #include <Kernel/Memory/PrivateInodeVMObject.h>
 #include <Kernel/Memory/SharedInodeVMObject.h>
 #include <Kernel/Process.h>
-#include <LibC/errno_numbers.h>
 #include <LibC/sys/ioctl_numbers.h>

 namespace Kernel {
--- a/Kernel/FileSystem/OpenFileDescription.cpp
+++ b/Kernel/FileSystem/OpenFileDescription.cpp
@ -6,6 +6,7 @@
 */

 #include <AK/MemoryStream.h>
+#include <Kernel/API/POSIX/errno.h>
 #include <Kernel/Debug.h>
 #include <Kernel/Devices/BlockDevice.h>
 #include <Kernel/FileSystem/Custody.h>
@ -20,7 +21,6 @@
 #include <Kernel/TTY/MasterPTY.h>
 #include <Kernel/TTY/TTY.h>
 #include <Kernel/UnixTypes.h>
-#include <LibC/errno_numbers.h>

 namespace Kernel {

--- a/Kernel/FileSystem/ProcFS.cpp
+++ b/Kernel/FileSystem/ProcFS.cpp
@ -7,6 +7,7 @@
 */

 #include <AK/Singleton.h>
+#include <Kernel/API/POSIX/errno.h>
 #include <Kernel/Debug.h>
 #include <Kernel/FileSystem/Custody.h>
 #include <Kernel/FileSystem/OpenFileDescription.h>
@ -15,7 +16,6 @@
 #include <Kernel/Heap/kmalloc.h>
 #include <Kernel/Process.h>
 #include <Kernel/Sections.h>
-#include <LibC/errno_numbers.h>

 namespace Kernel {

--- a/Kernel/FileSystem/VirtualFileSystem.cpp
+++ b/Kernel/FileSystem/VirtualFileSystem.cpp
@ -7,6 +7,7 @@
 #include <AK/GenericLexer.h>
 #include <AK/Singleton.h>
 #include <AK/StringBuilder.h>
+#include <Kernel/API/POSIX/errno.h>
 #include <Kernel/Debug.h>
 #include <Kernel/Devices/BlockDevice.h>
 #include <Kernel/Devices/DeviceManagement.h>
@ -19,7 +20,6 @@
 #include <Kernel/KSyms.h>
 #include <Kernel/Process.h>
 #include <Kernel/Sections.h>
-#include <LibC/errno_numbers.h>

 namespace Kernel {

--- a/Kernel/Graphics/FramebufferDevice.cpp
+++ b/Kernel/Graphics/FramebufferDevice.cpp
@ -6,6 +6,7 @@

 #include <AK/Checked.h>
 #include <AK/Try.h>
+#include <Kernel/API/POSIX/errno.h>
 #include <Kernel/Debug.h>
 #include <Kernel/Devices/DeviceManagement.h>
 #include <Kernel/Graphics/FramebufferDevice.h>
@ -14,7 +15,6 @@
 #include <Kernel/Memory/MemoryManager.h>
 #include <Kernel/Process.h>
 #include <Kernel/Sections.h>
-#include <LibC/errno_numbers.h>
 #include <LibC/sys/ioctl_numbers.h>

 namespace Kernel {
--- a/Kernel/Graphics/GenericFramebufferDevice.cpp
+++ b/Kernel/Graphics/GenericFramebufferDevice.cpp
@ -6,6 +6,7 @@

 #include <AK/Checked.h>
 #include <AK/Try.h>
+#include <Kernel/API/POSIX/errno.h>
 #include <Kernel/Debug.h>
 #include <Kernel/Devices/DeviceManagement.h>
 #include <Kernel/Graphics/FramebufferDevice.h>
@ -15,7 +16,6 @@
 #include <Kernel/Process.h>
 #include <Kernel/Sections.h>
 #include <Kernel/StdLib.h>
-#include <LibC/errno_numbers.h>

 #define MAX_RESOLUTION_WIDTH 4096
 #define MAX_RESOLUTION_HEIGHT 2160
--- a/Kernel/Net/IPv4Socket.cpp
+++ b/Kernel/Net/IPv4Socket.cpp
@ -6,6 +6,7 @@

 #include <AK/Singleton.h>
 #include <AK/StringBuilder.h>
+#include <Kernel/API/POSIX/errno.h>
 #include <Kernel/Debug.h>
 #include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Net/ARP.h>
@ -21,7 +22,6 @@
 #include <Kernel/Net/UDPSocket.h>
 #include <Kernel/Process.h>
 #include <Kernel/UnixTypes.h>
-#include <LibC/errno_numbers.h>
 #include <LibC/sys/ioctl_numbers.h>

 namespace Kernel {
--- a/Kernel/Net/LocalSocket.cpp
+++ b/Kernel/Net/LocalSocket.cpp
@ -6,6 +6,7 @@

 #include <AK/Singleton.h>
 #include <AK/StringBuilder.h>
+#include <Kernel/API/POSIX/errno.h>
 #include <Kernel/Debug.h>
 #include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/FileSystem/VirtualFileSystem.h>
@ -15,7 +16,6 @@
 #include <Kernel/Process.h>
 #include <Kernel/StdLib.h>
 #include <Kernel/UnixTypes.h>
-#include <LibC/errno_numbers.h>
 #include <LibC/sys/ioctl_numbers.h>

 namespace Kernel {
--- a/Kernel/Net/Socket.cpp
+++ b/Kernel/Net/Socket.cpp
@ -5,6 +5,7 @@
 */

 #include <AK/StringView.h>
+#include <Kernel/API/POSIX/errno.h>
 #include <Kernel/Debug.h>
 #include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Net/IPv4Socket.h>
@ -13,7 +14,6 @@
 #include <Kernel/Net/Socket.h>
 #include <Kernel/Process.h>
 #include <Kernel/UnixTypes.h>
-#include <LibC/errno_numbers.h>

 namespace Kernel {

--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@ -17,6 +17,7 @@
 #ifdef ENABLE_KERNEL_COVERAGE_COLLECTION
 #    include <Kernel/Devices/KCOVDevice.h>
 #endif
+#include <Kernel/API/POSIX/errno.h>
 #include <Kernel/Devices/NullDevice.h>
 #include <Kernel/FileSystem/Custody.h>
 #include <Kernel/FileSystem/OpenFileDescription.h>
@ -34,7 +35,6 @@
 #include <Kernel/TTY/TTY.h>
 #include <Kernel/Thread.h>
 #include <Kernel/ThreadTracer.h>
-#include <LibC/errno_numbers.h>
 #include <LibC/limits.h>

 namespace Kernel {
--- a/Kernel/TTY/MasterPTY.cpp
+++ b/Kernel/TTY/MasterPTY.cpp
@ -4,13 +4,13 @@
 * SPDX-License-Identifier: BSD-2-Clause
 */

+#include <Kernel/API/POSIX/errno.h>
 #include <Kernel/Arch/x86/InterruptDisabler.h>
 #include <Kernel/Debug.h>
 #include <Kernel/Process.h>
 #include <Kernel/TTY/MasterPTY.h>
 #include <Kernel/TTY/PTYMultiplexer.h>
 #include <Kernel/TTY/SlavePTY.h>
-#include <LibC/errno_numbers.h>
 #include <LibC/signal_numbers.h>
 #include <LibC/sys/ioctl_numbers.h>

--- a/Kernel/TTY/PTYMultiplexer.cpp
+++ b/Kernel/TTY/PTYMultiplexer.cpp
@ -5,12 +5,12 @@
 */

 #include <AK/Singleton.h>
+#include <Kernel/API/POSIX/errno.h>
 #include <Kernel/Debug.h>
 #include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Sections.h>
 #include <Kernel/TTY/MasterPTY.h>
 #include <Kernel/TTY/PTYMultiplexer.h>
-#include <LibC/errno_numbers.h>

 namespace Kernel {

--- a/Kernel/TTY/TTY.cpp
+++ b/Kernel/TTY/TTY.cpp
@ -6,11 +6,11 @@

 #include <AK/ScopeGuard.h>
 #include <AK/StringView.h>
+#include <Kernel/API/POSIX/errno.h>
 #include <Kernel/Arch/x86/InterruptDisabler.h>
 #include <Kernel/Debug.h>
 #include <Kernel/Process.h>
 #include <Kernel/TTY/TTY.h>
-#include <LibC/errno_numbers.h>
 #include <LibC/signal_numbers.h>
 #include <LibC/sys/ioctl_numbers.h>
 #define TTYDEFCHARS
--- a/Kernel/UserOrKernelBuffer.h
+++ b/Kernel/UserOrKernelBuffer.h
@ -9,10 +9,10 @@

 #include <AK/Types.h>
 #include <AK/Userspace.h>
+#include <Kernel/API/POSIX/errno.h>
 #include <Kernel/Memory/MemoryManager.h>
 #include <Kernel/StdLib.h>
 #include <Kernel/UnixTypes.h>
-#include <LibC/errno_numbers.h>

 namespace Kernel {