util-vserver-0.30.208

[util-vserver.git] / ensc_wrappers / wrappers-io.hc

diff --git a/ensc_wrappers/wrappers-io.hc b/ensc_wrappers/wrappers-io.hc
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+++ b/ensc_wrappers/wrappers-io.hc
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+// $Id: wrappers-io.hc,v 1.3 2005/07/03 12:33:44 ensc Exp $    --*- c -*--
+
+// Copyright (C) 2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
+//  
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; version 2 of the License.
+//  
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//  
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+
+#ifndef H_ENSC_IN_WRAPPERS_H
+#  error wrappers_handler.hc can not be used in this way
+#endif
+
+#include <stdbool.h>
+
+inline static UNUSED bool
+WwriteAll(int fd, void const *ptr_v, size_t len, int *err)
+{
+  register char const  *ptr = ptr_v;
+
+  if (err) *err = 0;
+
+  while (len>0) {
+    ssize_t    res = TEMP_FAILURE_RETRY(write(fd, ptr, len));
+    if (res<=0) {
+      if (err) *err = errno;
+      return false;
+    }
+
+    ptr += res;
+    len -= res;
+  }
+  return true;
+}
+
+inline static UNUSED void
+EwriteAll(int fd, void const *ptr_v, size_t len)
+{
+  register char const  *ptr = ptr_v;
+
+  while (len>0) {
+    ssize_t    res = TEMP_FAILURE_RETRY(write(fd, ptr, len));
+    FatalErrnoError(res==-1, "write()");
+
+    ptr += res;
+    len -= res;
+  }
+}
+
+
+inline static UNUSED bool
+WreadAll(int fd, void *ptr_v, size_t len, int *err)
+{
+  register char        *ptr = ptr_v;
+
+  if (err) *err = 0;
+
+  while (len>0) {
+    ssize_t    res = TEMP_FAILURE_RETRY(read(fd, ptr, len));
+    if (res==-1) {
+      if (err) *err = errno;
+      return false;
+    }
+
+    if (res==0) return false;
+
+    ptr += res;
+    len -= res;
+  }
+  return true;
+}
+
+inline static UNUSED bool
+EreadAll(int fd, void *ptr_v, size_t len)
+{
+  register char        *ptr = ptr_v;
+  
+  while (len>0) {
+    ssize_t    res = TEMP_FAILURE_RETRY(read(fd, ptr, len));
+    FatalErrnoError(res==-1, "read()");
+
+    if (res==0) return false;
+
+    ptr += res;
+    len -= res;
+  }
+
+  return true;
+}