[PATCH v4 5/8] ntdll: Add support for MacOS X style extended attributes.

[Erich E. Hoover]

From: "Erich E. Hoover"

Co-authored-by: Joel Holdsworth 
Signed-off-by: Joel Holdsworth 
---
 configure              | 28 ++++++++++++++++++++++++++++
 configure.ac           |  3 +++
 dlls/ntdll/unix/file.c | 19 +++++++++++++++----
 include/config.h.in    |  6 ++++++
 4 files changed, 52 insertions(+), 4 deletions(-)

diff --git a/configure b/configure
index 9c6fb443e1f..46f576c3b14 100755
--- a/configure
+++ b/configure
@@ -9114,6 +9114,34 @@ then :
  HAVE_XATTR=1
 fi

+done
+       for ac_header in sys/xattr.h
+do :
+  ac_fn_c_check_header_compile "$LINENO" "sys/xattr.h" "ac_cv_header_sys_xattr_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_xattr_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_XATTR_H 1" >>confdefs.h
+ HAVE_XATTR=1
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/xattr.h>
+int
+main (void)
+{
+getxattr("", "", "", 0, 0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+printf "%s\n" "#define XATTR_ADDITIONAL_OPTIONS 1" >>confdefs.h
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
 done

diff --git a/configure.ac b/configure.ac
index fd59bd6948d..2bd616d4e02 100644
--- a/configure.ac
+++ b/configure.ac
@@ -636,6 +636,9 @@ AC_CHECK_HEADERS([libprocstat.h],,,
 #endif])

AC_CHECK_HEADERS(attr/xattr.h, [HAVE_XATTR=1])
+AC_CHECK_HEADERS(sys/xattr.h, [HAVE_XATTR=1]
+    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/xattr.h>]], [[getxattr("", "", "", 0, 0, 0);]])],
+        [AC_DEFINE(XATTR_ADDITIONAL_OPTIONS, 1, [Define if xattr functions take additional arguments (Mac OS X)])])])

dnl **** Check for working dll ****

diff --git a/dlls/ntdll/unix/file.c b/dlls/ntdll/unix/file.c
index 08b21a86aba..8d159ca4178 100644
--- a/dlls/ntdll/unix/file.c
+++ b/dlls/ntdll/unix/file.c
@@ -99,7 +99,10 @@
 #include <sys/statfs.h>
 #endif
 #ifdef HAVE_ATTR_XATTR_H
+#undef XATTR_ADDITIONAL_OPTIONS
 #include <attr/xattr.h>
+#elif defined(HAVE_SYS_XATTR_H)
+#include <sys/xattr.h>
 #endif
 #include <time.h>
 #include <unistd.h>
@@ -364,7 +367,9 @@ NTSTATUS errno_to_status( int err )

static int xattr_fremove( int filedes, const char *name )
 {
-#if defined(HAVE_ATTR_XATTR_H)
+#if defined(XATTR_ADDITIONAL_OPTIONS)
+    return fremovexattr( filedes, name, 0 );
+#elif defined(HAVE_SYS_XATTR_H) || defined(HAVE_ATTR_XATTR_H)
     return fremovexattr( filedes, name );
 #else
     errno = ENOSYS;
@@ -375,7 +380,9 @@ static int xattr_fremove( int filedes, const char *name )

static int xattr_fset( int filedes, const char *name, void *value, size_t size )
 {
-#if defined(HAVE_ATTR_XATTR_H)
+#if defined(XATTR_ADDITIONAL_OPTIONS)
+    return fsetxattr( filedes, name, value, size, 0, 0 );
+#elif defined(HAVE_SYS_XATTR_H) || defined(HAVE_ATTR_XATTR_H)
     return fsetxattr( filedes, name, value, size, 0 );
 #else
     errno = ENOSYS;
@@ -386,7 +393,9 @@ static int xattr_fset( int filedes, const char *name, void *value, size_t size )

static int xattr_get( const char *path, const char *name, void *value, size_t size )
 {
-#if defined(HAVE_ATTR_XATTR_H)
+#if defined(XATTR_ADDITIONAL_OPTIONS)
+    return getxattr( path, name, value, size, 0, 0 );
+#elif defined(HAVE_SYS_XATTR_H) || defined(HAVE_ATTR_XATTR_H)
     return getxattr( path, name, value, size );
 #else
     errno = ENOSYS;
@@ -397,7 +406,9 @@ static int xattr_get( const char *path, const char *name, void *value, size_t si

static int xattr_fget( int filedes, const char *name, void *value, size_t size )
 {
-#if defined(HAVE_ATTR_XATTR_H)
+#if defined(XATTR_ADDITIONAL_OPTIONS)
+    return fgetxattr( filedes, name, value, size, 0, 0 );
+#elif defined(HAVE_SYS_XATTR_H) || defined(HAVE_ATTR_XATTR_H)
     return fgetxattr( filedes, name, value, size );
 #else
     errno = ENOSYS;
diff --git a/include/config.h.in b/include/config.h.in
index 25f09636b3a..f6988317641 100644
--- a/include/config.h.in
+++ b/include/config.h.in
@@ -682,6 +682,9 @@
 /* Define to 1 if you have the <sys/vnode.h> header file. */
 #undef HAVE_SYS_VNODE_H

+/* Define to 1 if you have the <sys/xattr.h> header file. */
+#undef HAVE_SYS_XATTR_H
+
 /* Define to 1 if you have the `tcdrain' function. */
 #undef HAVE_TCDRAIN

@@ -891,6 +894,9 @@
    backward compatibility; new code need not use it. */
 #undef STDC_HEADERS

+/* Define if xattr functions take additional arguments (Mac OS X) */
+#undef XATTR_ADDITIONAL_OPTIONS
+
 /* Define to 1 if the X Window System is missing or not being used. */
 #undef X_DISPLAY_MISSING