From f0d7ce034e5ce2be397a49a8e37d4f9a51759a54 Mon Sep 17 00:00:00 2001
From: Filip Navara <filip.navara@gmail.com>
Date: Thu, 4 Dec 2003 13:23:26 +0000
Subject: [PATCH] - Fixed MSVCRTand CRTDLL building.

svn path=/trunk/; revision=6859
---
 reactos/lib/crtdll/stdlib/errno.c     | 32 ++++++++++-
 reactos/lib/msvcrt/stdlib/doserrmap.h | 82 +++++++++++++++++++++++++++
 2 files changed, 111 insertions(+), 3 deletions(-)
 create mode 100644 reactos/lib/msvcrt/stdlib/doserrmap.h

diff --git a/reactos/lib/crtdll/stdlib/errno.c b/reactos/lib/crtdll/stdlib/errno.c
index a44eda924f6..cf721e5ff41 100644
--- a/reactos/lib/crtdll/stdlib/errno.c
+++ b/reactos/lib/crtdll/stdlib/errno.c
@@ -1,5 +1,6 @@
 #include <windows.h>
 #include <msvcrt/errno.h>
+#include "../../msvcrt/stdlib/doserrmap.h"
 
 #undef errno
 int errno;
@@ -18,15 +19,12 @@ int *_errno(void)
 	return &errno;
 }
 
-
 int __set_errno (int error)
 {
 	errno = error;
 	return error;
 }
 
-
-
 /*
  * @implemented
  */
@@ -43,3 +41,31 @@ int*	__doserrno(void)
 	_doserrno = GetLastError();
 	return &_doserrno;
 }
+
+/*
+ * This function sets both doserrno to the passed in OS error code
+ * and also maps this to an appropriate errno code.  The mapping
+ * has been deduced automagically by running this functions, which
+ * exists in MSVCRT but is undocumented, on all the error codes in
+ * winerror.h.
+ */
+void _dosmaperr(unsigned long oserror)
+{
+	int pos, base, lim;
+	
+	SetLastError(oserror);
+	
+	/* Use binary chop to find the corresponding errno code */
+	for (base=0, lim=sizeof(doserrmap)/sizeof(doserrmap[0]); lim; lim >>= 1) {
+		pos = base+(lim >> 1);
+		if (doserrmap[pos].winerr == oserror) {
+			__set_errno(doserrmap[pos].en);
+			return;
+		} else if (doserrmap[pos].winerr > oserror) {
+			base = pos + 1;
+			--lim;
+		}
+	}
+	/* EINVAL appears to be the default */
+	__set_errno(EINVAL);
+}
diff --git a/reactos/lib/msvcrt/stdlib/doserrmap.h b/reactos/lib/msvcrt/stdlib/doserrmap.h
new file mode 100644
index 00000000000..3b1307146f4
--- /dev/null
+++ b/reactos/lib/msvcrt/stdlib/doserrmap.h
@@ -0,0 +1,82 @@
+/* doserrmap.h: auto-generated from winerror.h and errno.h using undoc'd _dosmaperr. */
+
+#ifndef doserrmap_h
+#define doserrmap_h
+
+struct {
+	unsigned long winerr;
+	int en;
+} doserrmap[] = {
+	{ ERROR_FILE_NOT_FOUND, ENOENT },
+	{ ERROR_PATH_NOT_FOUND, ENOENT },
+	{ ERROR_TOO_MANY_OPEN_FILES, EMFILE },
+	{ ERROR_ACCESS_DENIED, EACCES },
+	{ ERROR_INVALID_HANDLE, EBADF },
+	{ ERROR_ARENA_TRASHED, ENOMEM },
+	{ ERROR_NOT_ENOUGH_MEMORY, ENOMEM },
+	{ ERROR_INVALID_BLOCK, ENOMEM },
+	{ ERROR_BAD_ENVIRONMENT, E2BIG },
+	{ ERROR_BAD_FORMAT, ENOEXEC },
+	{ ERROR_INVALID_DRIVE, ENOENT },
+	{ ERROR_CURRENT_DIRECTORY, EACCES },
+	{ ERROR_NOT_SAME_DEVICE, EXDEV },
+	{ ERROR_NO_MORE_FILES, ENOENT },
+	{ ERROR_WRITE_PROTECT, EACCES },
+	{ ERROR_BAD_UNIT, EACCES },
+	{ ERROR_NOT_READY, EACCES },
+	{ ERROR_BAD_COMMAND, EACCES },
+	{ ERROR_CRC, EACCES },
+	{ ERROR_BAD_LENGTH, EACCES },
+	{ ERROR_SEEK, EACCES },
+	{ ERROR_NOT_DOS_DISK, EACCES },
+	{ ERROR_SECTOR_NOT_FOUND, EACCES },
+	{ ERROR_OUT_OF_PAPER, EACCES },
+	{ ERROR_WRITE_FAULT, EACCES },
+	{ ERROR_READ_FAULT, EACCES },
+	{ ERROR_GEN_FAILURE, EACCES },
+	{ ERROR_SHARING_VIOLATION, EACCES },
+	{ ERROR_LOCK_VIOLATION, EACCES },
+	{ ERROR_WRONG_DISK, EACCES },
+	{ ERROR_SHARING_BUFFER_EXCEEDED, EACCES },
+	{ ERROR_BAD_NETPATH, ENOENT },
+	{ ERROR_NETWORK_ACCESS_DENIED, EACCES },
+	{ ERROR_BAD_NET_NAME, ENOENT },
+	{ ERROR_FILE_EXISTS, EEXIST },
+	{ ERROR_CANNOT_MAKE, EACCES },
+	{ ERROR_FAIL_I24, EACCES },
+	{ ERROR_NO_PROC_SLOTS, EAGAIN },
+	{ ERROR_DRIVE_LOCKED, EACCES },
+	{ ERROR_BROKEN_PIPE, EPIPE },
+	{ ERROR_DISK_FULL, ENOSPC },
+	{ ERROR_INVALID_TARGET_HANDLE, EBADF },
+	{ ERROR_WAIT_NO_CHILDREN, ECHILD },
+	{ ERROR_CHILD_NOT_COMPLETE, ECHILD },
+	{ ERROR_DIRECT_ACCESS_HANDLE, EBADF },
+	{ ERROR_SEEK_ON_DEVICE, EACCES },
+	{ ERROR_DIR_NOT_EMPTY, ENOTEMPTY },
+	{ ERROR_NOT_LOCKED, EACCES },
+	{ ERROR_BAD_PATHNAME, ENOENT },
+	{ ERROR_MAX_THRDS_REACHED, EAGAIN },
+	{ ERROR_LOCK_FAILED, EACCES },
+	{ ERROR_ALREADY_EXISTS, EEXIST },
+	{ ERROR_INVALID_STARTING_CODESEG, ENOEXEC },
+	{ ERROR_INVALID_STACKSEG, ENOEXEC },
+	{ ERROR_INVALID_MODULETYPE, ENOEXEC },
+	{ ERROR_INVALID_EXE_SIGNATURE, ENOEXEC },
+	{ ERROR_EXE_MARKED_INVALID, ENOEXEC },
+	{ ERROR_BAD_EXE_FORMAT, ENOEXEC },
+	{ ERROR_ITERATED_DATA_EXCEEDS_64k, ENOEXEC },
+	{ ERROR_INVALID_MINALLOCSIZE, ENOEXEC },
+	{ ERROR_DYNLINK_FROM_INVALID_RING, ENOEXEC },
+	{ ERROR_IOPL_NOT_ENABLED, ENOEXEC },
+	{ ERROR_INVALID_SEGDPL, ENOEXEC },
+	{ ERROR_AUTODATASEG_EXCEEDS_64k, ENOEXEC },
+	{ ERROR_RING2SEG_MUST_BE_MOVABLE, ENOEXEC },
+	{ ERROR_RELOC_CHAIN_XEEDS_SEGLIM, ENOEXEC },
+	{ ERROR_INFLOOP_IN_RELOC_CHAIN, ENOEXEC },
+	{ ERROR_FILENAME_EXCED_RANGE, ENOENT },
+	{ ERROR_NESTING_NOT_ALLOWED, EAGAIN },
+	{ ERROR_NOT_ENOUGH_QUOTA, ENOMEM }
+};
+
+#endif /* doserrmap_h */