/*
   Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
   This file is part of GlusterFS.

   This file is licensed to you under your choice of the GNU Lesser
   General Public License, version 3 or any later version (LGPLv3 or
   later), or the GNU General Public License, version 2 (GPLv2), in all
   cases as published by the Free Software Foundation.
*/
#ifndef _MARKER_H
#define _MARKER_H

#include "marker-quota.h"
#include <glusterfs/xlator.h>
#include <glusterfs/defaults.h>
#include <glusterfs/compat-uuid.h>
#include <glusterfs/call-stub.h>

#define MARKER_XATTR_PREFIX "trusted.glusterfs"
#define XTIME "xtime"
#define VOLUME_MARK "volume-mark"
#define VOLUME_UUID "volume-uuid"
#define TIMESTAMP_FILE "timestamp-file"

enum {
    GF_QUOTA = 1,
    GF_XTIME = 2,
    GF_XTIME_GSYNC_FORCE = 4,
    GF_INODE_QUOTA = 8,
};

/*initialize the local variable*/
#define MARKER_INIT_LOCAL(_frame, _local)                                      \
    do {                                                                       \
        _frame->local = _local;                                                \
        _local->pid = _frame->root->pid;                                       \
        memset(&_local->loc, 0, sizeof(loc_t));                                \
        _local->ref = 1;                                                       \
        _local->uid = -1;                                                      \
        _local->gid = -1;                                                      \
        LOCK_INIT(&_local->lock);                                              \
        _local->oplocal = NULL;                                                \
    } while (0)

/* try alloc and if it fails, goto label */
#define ALLOCATE_OR_GOTO(var, type, label)                                     \
    do {                                                                       \
        var = GF_CALLOC(sizeof(type), 1, gf_marker_mt_##type);                 \
        if (!var) {                                                            \
            gf_log(this->name, GF_LOG_ERROR, "out of memory :(");              \
            goto label;                                                        \
        }                                                                      \
    } while (0)

#define _MARKER_SET_UID_GID(dest, src)                                         \
    do {                                                                       \
        if (src->uid != -1 && src->gid != -1) {                                \
            dest->uid = src->uid;                                              \
            dest->gid = src->gid;                                              \
        }                                                                      \
    } while (0)

#define MARKER_SET_UID_GID(frame, dest, src)                                   \
    do {                                                                       \
        _MARKER_SET_UID_GID(dest, src);                                        \
        frame->root->uid = 0;                                                  \
        frame->root->gid = 0;                                                  \
        frame->cookie = (void *)_GF_UID_GID_CHANGED;                           \
    } while (0)

#define MARKER_RESET_UID_GID(frame, dest, src)                                 \
    do {                                                                       \
        _MARKER_SET_UID_GID(dest, src);                                        \
        frame->cookie = NULL;                                                  \
    } while (0)

#define MARKER_STACK_UNWIND(fop, frame, params...)                             \
    do {                                                                       \
        quota_local_t *_local = NULL;                                          \
        if (frame) {                                                           \
            _local = frame->local;                                             \
            frame->local = NULL;                                               \
        }                                                                      \
        STACK_UNWIND_STRICT(fop, frame, params);                               \
        if (_local)                                                            \
            marker_local_unref(_local);                                        \
    } while (0)

struct marker_local {
    uint32_t timebuf[2];
    pid_t pid;
    loc_t loc;
    loc_t parent_loc;
    uid_t uid;
    gid_t gid;
    int32_t ref;
    uint32_t ia_nlink;
    struct iatt buf;
    gf_lock_t lock;
    mode_t mode;
    int32_t err;
    call_stub_t *stub;
    call_frame_t *lk_frame;
    quota_meta_t contribution;
    struct marker_local *oplocal;

    /* marker quota specific */
    int64_t delta;
    int64_t d_off;
    int64_t sum;
    int64_t size;
    int32_t hl_count;
    int32_t dentry_child_count;

    fd_t *fd;
    call_frame_t *frame;

    quota_inode_ctx_t *ctx;
    inode_contribution_t *contri;

    int xflag;
    dict_t *xdata;
    gf_boolean_t skip_txn;
};
typedef struct marker_local marker_local_t;

#define quota_local_t marker_local_t

struct marker_inode_ctx {
    struct quota_inode_ctx *quota_ctx;
};
typedef struct marker_inode_ctx marker_inode_ctx_t;

struct marker_conf {
    char feature_enabled;
    char *size_key;
    char *dirty_key;
    char *volume_uuid;
    uuid_t volume_uuid_bin;
    char *timestamp_file;
    char *marker_xattr;
    uint64_t quota_lk_owner;
    gf_lock_t lock;
    int32_t version;
};
typedef struct marker_conf marker_conf_t;

#endif