From 7a4078ee340b7f15c839257d6fa895d92abe0224 Mon Sep 17 00:00:00 2001
From: Christopher Faylor <me@cgf.cx>
Date: Thu, 28 Jun 2001 02:19:57 +0000
Subject: Change check_null_empty_path* to check_null_empty_str* throughout. *
 path.cc (path_conv::check): Add signal protection here since retrieving info
 about remote shares can take some time. * path.h
 (check_null_empty_str_errno): Convert to a function prototype. * path.cc
 (check_null_empty_str): Move to miscfuncs.cc. * miscfuncs.cc
 (check_null_empty_str_errno): New function. (__check_null_invalid_struct):
 Ditto. (__check_null_invalid_struct_errno): Ditto. (check_null_empty_str):
 Change from VirtualQuery to IsBadWritePtr. * thread.cc (check_valid_pointer):
 Ditto. * resource.cc (getrlimit): Use check_null_invalid_struct macro for
 checking validity of pointer. (setrlimit): Ditto.

---
 winsup/cygwin/miscfuncs.cc | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

(limited to 'winsup/cygwin/miscfuncs.cc')

diff --git a/winsup/cygwin/miscfuncs.cc b/winsup/cygwin/miscfuncs.cc
index d66c22549..49e7cebd9 100644
--- a/winsup/cygwin/miscfuncs.cc
+++ b/winsup/cygwin/miscfuncs.cc
@@ -9,6 +9,8 @@ Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
 details. */
 
 #include "winsup.h"
+#include "cygerrno.h"
+#include <sys/errno.h>
 
 /********************** String Helper Functions ************************/
 
@@ -112,3 +114,42 @@ strcasestr (const char *searchee, const char *lookfor)
 
   return NULL;
 }
+
+int __stdcall
+check_null_empty_str (const char *name)
+{
+  if (!name || IsBadStringPtr (name, MAX_PATH))
+    return EFAULT;
+
+  if (!*name)
+    return ENOENT;
+
+  return 0;
+}
+
+int __stdcall
+check_null_empty_str_errno (const char *name)
+{ 
+  int __err; 
+  if ((__err = check_null_empty_str (name))) 
+    set_errno (__err); 
+  return __err; 
+}
+
+int __stdcall
+__check_null_invalid_struct (const void *s, unsigned sz)
+{
+  if (!s || IsBadWritePtr ((void *) s, sz))
+    return EFAULT;
+
+  return 0;
+}
+
+int __stdcall
+__check_null_invalid_struct_errno (const void *s, unsigned sz)
+{ 
+  int __err; 
+  if ((__err = __check_null_invalid_struct (s, sz))) 
+    set_errno (__err); 
+  return __err; 
+}
-- 
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