/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
 * vim:expandtab:shiftwidth=8:tabstop=8:
 *
 * GPL HEADER START
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 only,
 * as published by the Free Software Foundation.
 *
 * 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 version 2 for more details (a copy is included
 * in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU General Public License
 * version 2 along with this program; If not, see
 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 * GPL HEADER END
 */
/*
 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
 * Use is subject to license terms.
 */
/*
 * This file is part of Lustre, http://www.lustre.org/
 * Lustre is a trademark of Sun Microsystems, Inc.
 */

#ifndef __LIBCFS_LINUX_LIBCFS_H__
#define __LIBCFS_LINUX_LIBCFS_H__

#ifndef __LIBCFS_LIBCFS_H__
#error Do not #include this file directly. #include <libcfs/libcfs.h> instead
#endif

#ifndef __KERNEL__
#error This include is only for kernel use.
#endif


#include <stdarg.h>
#include <libcfs/linux/linux-time.h>
#include <libcfs/linux/linux-mem.h>
#include <libcfs/linux/linux-prim.h>
#include <libcfs/linux/linux-lock.h>
#include <libcfs/linux/linux-fs.h>
#include <libcfs/linux/linux-tcpip.h>
#include <libcfs/linux/linux-bitops.h>
#include <libcfs/linux/linux-types.h>
#include <libcfs/linux/kp30.h>

#ifdef HAVE_ASM_TYPES_H
#include <asm/types.h>
#endif
#include <linux/types.h>
#include <asm/timex.h>
#include <linux/sched.h> /* THREAD_SIZE */

#define CFS_THREAD_SIZE   THREAD_SIZE
#define LUSTRE_TRACE_SIZE (THREAD_SIZE >> 5)

#if !defined(__x86_64__)
# ifdef  __ia64__
#  define CDEBUG_STACK() (THREAD_SIZE -                                 \
                          ((unsigned long)__builtin_dwarf_cfa() &       \
                           (THREAD_SIZE - 1)))
# else
#  define CDEBUG_STACK() (THREAD_SIZE -                                 \
                          ((unsigned long)__builtin_frame_address(0) &  \
                           (THREAD_SIZE - 1)))
# endif /* __ia64__ */

#define __CHECK_STACK(file, func, line)                                 \
do {                                                                    \
        unsigned long _stack = CDEBUG_STACK();                          \
                                                                        \
        if (_stack > 3*THREAD_SIZE/4 && _stack > libcfs_stack) {        \
                libcfs_stack = _stack;                                  \
                libcfs_debug_msg(NULL, DEBUG_SUBSYSTEM, D_WARNING,      \
                                 file, func, line,                      \
                                 "maximum lustre stack %lu\n", _stack); \
                dump_stack();                                           \
              /*panic("LBUG");*/                                        \
        }                                                               \
} while (0)
#define CFS_CHECK_STACK()     __CHECK_STACK(__FILE__, __func__, __LINE__)
#else /* __x86_64__ */
#define CFS_CHECK_STACK() do { } while(0)
#define CDEBUG_STACK() (0L)
#endif /* __x86_64__ */

/* initial pid  */
#define LUSTRE_LNET_PID          12345

#define ENTRY_NESTING_SUPPORT (1)
#define ENTRY_NESTING   do {;} while (0)
#define EXIT_NESTING   do {;} while (0)
#define __current_nesting_level() (0)

/**
 * Platform specific declarations for cfs_curproc API (libcfs/curproc.h)
 *
 * Implementation is in linux-curproc.c
 */
#define CFS_CURPROC_COMM_MAX (sizeof ((struct task_struct *)0)->comm)

#include <linux/capability.h>
typedef kernel_cap_t cfs_kernel_cap_t;

/*
 * No stack-back-tracing in Linux for now.
 */
struct cfs_stack_trace {
};

/* long integer with size equal to pointer */
typedef unsigned long ulong_ptr_t;
typedef long long_ptr_t;

#ifndef WITH_WATCHDOG
#define WITH_WATCHDOG
#endif

#ifndef HAVE_STRUCT_CRED

#define current_cred() (current)

#define current_cred_xxx(xxx)                   \
({                                              \
        current->xxx;                     \
})

#ifndef HAVE_CRED_WRAPPERS

#define current_uid()           (current_cred_xxx(uid))
#define current_gid()           (current_cred_xxx(gid))
#define current_euid()          (current_cred_xxx(euid))
#define current_egid()          (current_cred_xxx(egid))
#define current_suid()          (current_cred_xxx(suid))
#define current_sgid()          (current_cred_xxx(sgid))
#define current_fsuid()         (current_cred_xxx(fsuid))
#define current_fsgid()         (current_cred_xxx(fsgid))
#define current_cap()           (current_cred_xxx(cap_effective))

#endif /* HAVE_LINUX_CRED_H */

#define current_user()          (current_cred_xxx(user))
#define current_user_ns()       (current_cred_xxx(user)->user_ns)
#define current_security()      (current_cred_xxx(security))

#define cred task_struct

#define prepare_creds() (current)
#define commit_creds(a)

#endif /* HAVE_STRUCT_CRED */

#endif /* _LINUX_LIBCFS_H */