liblttng-ust/ns.h

   1 #ifndef _LTTNG_NS_H
   2 #define _LTTNG_NS_H
   3
   4 /*
   5  * Copyright (c) 2019 - Michael Jeanson <mjeanson@efficios.com>
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; only
  10  * version 2.1 of the License.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22
  23 /*
  24  * The lowest valid inode number that can be allocated in the proc filesystem
  25  * is 0xF0000000. Any number below can be used internally as an error code.
  26  *
  27  * Zero is used in the kernel as an error code, it's the value we will return
  28  * when we fail to read the proper inode number.
  29  *
  30  * One is used internally to identify an uninitialized cache entry, it should
  31  * never be returned.
  32  */
  33
  34 enum ns_ino_state {
  35         NS_INO_UNAVAILABLE      = 0x0,
  36         NS_INO_UNINITIALIZED    = 0x1,
  37         NS_INO_MIN              = 0xF0000000,
  38 };
  39
  40 #endif /* _LTTNG_NS_H */