util-vserver 0.30.215.

[util-vserver.git] / src / attribute-util.h

diff --git a/src/attribute-util.h b/src/attribute-util.h
new file mode 100644 (file)
index 0000000..5f11938
--- /dev/null
+++ b/src/attribute-util.h
@@ -0,0 +1,65 @@
+// $Id$    --*- c -*--
+
+// Copyright (C) 2007-2008 Daniel Hokka Zakrisson
+//  
+// 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 _ATTRIBUTE_UTIL_H
+#define _ATTRIBUTE_UTIL_H
+
+static inline int
+ffsull(unsigned long long word)
+{
+  int bit;
+  for (bit = 0; bit < 64; bit++) {
+    if (word & (1ULL << bit))
+      break;
+  }
+  if (bit == 64)
+    bit = 0;
+  return bit;
+}
+
+#define print_bitfield(fd, type, name, var)    \
+  do {                                         \
+  int first;                                   \
+  WRITE_MSG(fd, name ":\n");                   \
+  first = 1;                                   \
+  while (1) {                                  \
+    char const *i;                             \
+    i = vc_lo ## type ## 2text(var);           \
+    if (!i)                                    \
+      break;                                   \
+    if (!first)                                        \
+      WRITE_MSG(fd, ",");                      \
+    else                                       \
+      first = 0;                               \
+    WRITE_STR(fd, i);                          \
+  }                                            \
+  while (*(var)) {                             \
+    int bit = ffsull(*(var));                  \
+    if (!bit)                                  \
+      break;                                   \
+    if (!first)                                        \
+      WRITE_MSG(fd, ",");                      \
+    else                                       \
+      first = 0;                               \
+    WRITE_MSG(fd, "^");                                \
+    WRITE_INT(fd, bit);                                \
+    *(var) &= ~(1ULL << bit);                  \
+  }                                            \
+  WRITE_MSG(fd, "\n");                         \
+  } while (0)
+
+#endif