Added all files

1 files changed, 777 insertions, 0 deletions

diff --git a/libglusterfs/src/protocol.h b/libglusterfs/src/protocol.h
new file mode 100644
index 00000000000..4ba869dee3a
--- /dev/null
+++ b/libglusterfs/src/protocol.h
@@ -0,0 +1,777 @@
+/*
+  Copyright (c) 2006, 2007, 2008 Z RESEARCH, Inc. <http://www.zresearch.com>
+  This file is part of GlusterFS.
+
+  GlusterFS 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; either version 3 of the License,
+  or (at your option) any later version.
+
+  GlusterFS 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, see
+  <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _PROTOCOL_H
+#define _PROTOCOL_H
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include <inttypes.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/statvfs.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#include "byte-order.h"
+
+
+struct gf_stat {
+	uint64_t ino;
+	uint64_t size;
+	uint64_t blocks;
+	uint32_t dev;
+	uint32_t rdev;
+	uint32_t mode;
+	uint32_t nlink;
+	uint32_t uid;
+	uint32_t gid;
+	uint32_t blksize;
+	uint32_t atime;
+	uint32_t atime_nsec;
+	uint32_t mtime;
+	uint32_t mtime_nsec;
+	uint32_t ctime;
+	uint32_t ctime_nsec;
+} __attribute__((packed));
+
+
+static inline void
+gf_stat_to_stat (struct gf_stat *gf_stat, struct stat *stat)
+{
+	stat->st_dev          = ntoh32 (gf_stat->dev);
+	stat->st_ino          = ntoh64 (gf_stat->ino);
+	stat->st_mode         = ntoh32 (gf_stat->mode);
+	stat->st_nlink        = ntoh32 (gf_stat->nlink);
+	stat->st_uid          = ntoh32 (gf_stat->uid);
+	stat->st_gid          = ntoh32 (gf_stat->gid);
+	stat->st_rdev         = ntoh32 (gf_stat->rdev);
+	stat->st_size         = ntoh64 (gf_stat->size);
+	stat->st_blksize      = ntoh32 (gf_stat->blksize);
+	stat->st_blocks       = ntoh64 (gf_stat->blocks);
+	stat->st_atime        = ntoh32 (gf_stat->atime);
+	stat->st_mtime        = ntoh32 (gf_stat->mtime);
+	stat->st_ctime        = ntoh32 (gf_stat->ctime);
+	/* TODO: handle nsec */
+}
+
+
+static inline void
+gf_stat_from_stat (struct gf_stat *gf_stat, struct stat *stat)
+{
+	gf_stat->dev         = hton32 (stat->st_dev);
+	gf_stat->ino         = hton64 (stat->st_ino);
+	gf_stat->mode        = hton32 (stat->st_mode);
+	gf_stat->nlink       = hton32 (stat->st_nlink);
+	gf_stat->uid         = hton32 (stat->st_uid);
+	gf_stat->gid         = hton32 (stat->st_gid);
+	gf_stat->rdev        = hton32 (stat->st_rdev);
+	gf_stat->size        = hton64 (stat->st_size);
+	gf_stat->blksize     = hton32 (stat->st_blksize);
+	gf_stat->blocks      = hton64 (stat->st_blocks);
+	gf_stat->atime       = hton32 (stat->st_atime);
+	gf_stat->mtime       = hton32 (stat->st_mtime);
+	gf_stat->ctime       = hton32 (stat->st_ctime);
+	/* TODO: handle nsec */
+}
+
+
+struct gf_statfs {
+	uint64_t bsize;
+	uint64_t frsize;
+	uint64_t blocks;
+	uint64_t bfree;
+	uint64_t bavail;
+	uint64_t files;
+	uint64_t ffree;
+	uint64_t favail;
+	uint64_t fsid;
+	uint64_t flag;
+	uint64_t namemax;
+} __attribute__((packed));
+
+
+static inline void
+gf_statfs_to_statfs (struct gf_statfs *gf_stat, struct statvfs *stat)
+{
+	stat->f_bsize   = ntoh64 (gf_stat->bsize);
+	stat->f_frsize  = ntoh64 (gf_stat->frsize);
+	stat->f_blocks  = ntoh64 (gf_stat->blocks);
+	stat->f_bfree   = ntoh64 (gf_stat->bfree);
+	stat->f_bavail  = ntoh64 (gf_stat->bavail);
+	stat->f_files   = ntoh64 (gf_stat->files);
+	stat->f_ffree   = ntoh64 (gf_stat->ffree);
+	stat->f_favail  = ntoh64 (gf_stat->favail);
+	stat->f_fsid    = ntoh64 (gf_stat->fsid);
+	stat->f_flag    = ntoh64 (gf_stat->flag);
+	stat->f_namemax = ntoh64 (gf_stat->namemax);
+}
+
+
+static inline void
+gf_statfs_from_statfs (struct gf_statfs *gf_stat, struct statvfs *stat)
+{
+	gf_stat->bsize   = hton64 (stat->f_bsize);
+	gf_stat->frsize  = hton64 (stat->f_frsize);
+	gf_stat->blocks  = hton64 (stat->f_blocks);
+	gf_stat->bfree   = hton64 (stat->f_bfree);
+	gf_stat->bavail  = hton64 (stat->f_bavail);
+	gf_stat->files   = hton64 (stat->f_files);
+	gf_stat->ffree   = hton64 (stat->f_ffree);
+	gf_stat->favail  = hton64 (stat->f_favail);
+	gf_stat->fsid    = hton64 (stat->f_fsid);
+	gf_stat->flag    = hton64 (stat->f_flag);
+	gf_stat->namemax = hton64 (stat->f_namemax);
+}
+
+
+struct gf_flock {
+	uint16_t type;
+	uint16_t whence;
+	uint64_t start;
+	uint64_t len;
+	uint32_t pid;
+} __attribute__((packed));
+
+
+static inline void
+gf_flock_to_flock (struct gf_flock *gf_flock, struct flock *flock)
+{
+	flock->l_type   = ntoh16 (gf_flock->type);
+	flock->l_whence = ntoh16 (gf_flock->whence);
+	flock->l_start  = ntoh64 (gf_flock->start);
+	flock->l_len    = ntoh64 (gf_flock->len);
+	flock->l_pid    = ntoh32 (gf_flock->pid);
+}
+
+
+static inline void
+gf_flock_from_flock (struct gf_flock *gf_flock, struct flock *flock)
+{
+	gf_flock->type   = hton16 (flock->l_type);
+	gf_flock->whence = hton16 (flock->l_whence);
+	gf_flock->start  = hton64 (flock->l_start);
+	gf_flock->len    = hton64 (flock->l_len);
+	gf_flock->pid    = hton32 (flock->l_pid);
+}
+
+
+struct gf_timespec {
+	uint32_t tv_sec;
+	uint32_t tv_nsec;
+} __attribute__((packed));
+
+
+static inline void
+gf_timespec_to_timespec (struct gf_timespec *gf_ts, struct timespec *ts)
+{
+
+	ts[0].tv_sec  = ntoh32 (gf_ts[0].tv_sec);
+	ts[0].tv_nsec = ntoh32 (gf_ts[0].tv_nsec);
+	ts[1].tv_sec  = ntoh32 (gf_ts[1].tv_sec);
+	ts[1].tv_nsec = ntoh32 (gf_ts[1].tv_nsec);
+}
+
+
+static inline void
+gf_timespec_from_timespec (struct gf_timespec *gf_ts, struct timespec *ts)
+{
+	gf_ts[0].tv_sec  = hton32 (ts[0].tv_sec);
+	gf_ts[0].tv_nsec = hton32 (ts[0].tv_nsec);
+	gf_ts[1].tv_sec  = hton32 (ts[1].tv_sec);
+	gf_ts[1].tv_nsec = hton32 (ts[1].tv_nsec);
+}
+
+
+typedef struct {
+	uint64_t ino;
+	char     path[0];     /* NULL terminated */
+} __attribute__((packed)) gf_fop_stat_req_t;;
+typedef struct {
+	struct gf_stat stat;
+} __attribute__((packed)) gf_fop_stat_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	uint32_t size;
+	char     path[0];     /* NULL terminated */
+} __attribute__((packed)) gf_fop_readlink_req_t;
+typedef struct {
+	char     path[0]; /* NULL terminated */
+} __attribute__((packed)) gf_fop_readlink_rsp_t;
+
+
+typedef struct {
+	uint64_t par;
+	uint64_t dev;
+	uint32_t mode;
+	char     path[0];     /* NULL terminated */
+	char     bname[0]; /* NULL terminated */
+} __attribute__((packed)) gf_fop_mknod_req_t;
+typedef struct {
+	struct gf_stat stat;
+} __attribute__((packed)) gf_fop_mknod_rsp_t;
+
+
+typedef struct {
+	uint64_t par;
+	uint32_t mode;
+	char     path[0];     /* NULL terminated */
+	char     bname[0]; /* NULL terminated */
+} __attribute__((packed)) gf_fop_mkdir_req_t;
+typedef struct {
+	struct gf_stat stat;
+} __attribute__((packed)) gf_fop_mkdir_rsp_t;
+
+
+typedef struct {
+	uint64_t par;
+	char     path[0];     /* NULL terminated */
+	char     bname[0]; /* NULL terminated */
+} __attribute__((packed)) gf_fop_unlink_req_t;
+typedef struct {
+} __attribute__((packed)) gf_fop_unlink_rsp_t;
+
+
+typedef struct {
+	uint64_t par;
+	char     path[0];
+	char     bname[0]; /* NULL terminated */
+} __attribute__((packed)) gf_fop_rmdir_req_t;
+typedef struct {
+} __attribute__((packed)) gf_fop_rmdir_rsp_t;
+
+
+typedef struct {
+	uint64_t par;
+	char     path[0];
+	char     bname[0];
+	char     linkname[0];
+} __attribute__((packed)) gf_fop_symlink_req_t;
+typedef struct {
+	struct gf_stat stat;
+}__attribute__((packed)) gf_fop_symlink_rsp_t;
+
+
+typedef struct {
+	uint64_t   oldpar;
+	uint64_t   newpar;
+	char       oldpath[0];
+	char       oldbname[0]; /* NULL terminated */
+	char       newpath[0];
+	char       newbname[0]; /* NULL terminated */
+} __attribute__((packed)) gf_fop_rename_req_t;
+typedef struct {
+	struct gf_stat stat;
+} __attribute__((packed)) gf_fop_rename_rsp_t;
+
+
+typedef struct {
+	uint64_t   oldino;
+	uint64_t   newpar;
+	char       oldpath[0];
+	char       newpath[0];
+	char       newbname[0];
+}__attribute__((packed)) gf_fop_link_req_t;
+typedef struct {
+	struct gf_stat stat;
+} __attribute__((packed)) gf_fop_link_rsp_t;
+
+
+typedef struct {
+	uint64_t  ino;
+	uint32_t  mode;
+	char      path[0];
+} __attribute__((packed)) gf_fop_chmod_req_t;
+typedef struct {
+	struct gf_stat stat;
+} __attribute__((packed)) gf_fop_chmod_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	uint32_t uid;
+	uint32_t gid;
+	char     path[0];
+} __attribute__((packed)) gf_fop_chown_req_t;
+typedef struct {
+	struct gf_stat stat;
+} __attribute__((packed)) gf_fop_chown_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	uint64_t offset;
+	char     path[0];
+} __attribute__((packed)) gf_fop_truncate_req_t;
+typedef struct {
+	struct gf_stat stat;
+} __attribute__((packed)) gf_fop_truncate_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	uint32_t flags;
+	char     path[0];
+} __attribute__((packed)) gf_fop_open_req_t;
+typedef struct {
+	int64_t fd;
+} __attribute__((packed)) gf_fop_open_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	int64_t  fd;
+	uint64_t offset;
+	uint32_t size;
+} __attribute__((packed)) gf_fop_read_req_t;
+typedef struct {
+	struct gf_stat stat;
+	char buf[0];
+} __attribute__((packed)) gf_fop_read_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	int64_t  fd;
+	uint64_t offset;
+	uint32_t size;
+} __attribute__((packed)) gf_fop_write_req_t;
+typedef struct {
+	struct gf_stat stat;
+} __attribute__((packed)) gf_fop_write_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	char     path[0];
+} __attribute__((packed)) gf_fop_statfs_req_t;
+typedef struct {
+	struct gf_statfs statfs;
+} __attribute__((packed)) gf_fop_statfs_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	int64_t  fd;
+} __attribute__((packed)) gf_fop_flush_req_t;
+typedef struct { } __attribute__((packed)) gf_fop_flush_rsp_t;
+
+
+typedef struct fsync_req {
+	uint64_t ino;
+	int64_t  fd;
+	uint32_t data;
+} __attribute__((packed)) gf_fop_fsync_req_t;
+typedef struct {
+} __attribute__((packed)) gf_fop_fsync_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	uint32_t flags;
+	uint32_t dict_len;
+	char     dict[0];
+	char     path[0];
+} __attribute__((packed)) gf_fop_setxattr_req_t;
+typedef struct { } __attribute__((packed)) gf_fop_setxattr_rsp_t;
+
+typedef struct {
+	uint64_t ino;
+	uint32_t flags;
+	uint32_t dict_len;
+	char     dict[0];
+	char     path[0];
+} __attribute__((packed)) gf_fop_xattrop_req_t;
+
+typedef struct {
+	uint32_t dict_len;
+	char  dict[0];
+} __attribute__((packed)) gf_fop_xattrop_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	int64_t  fd;
+	uint32_t flags;
+	uint32_t dict_len;
+	char     dict[0];
+} __attribute__((packed)) gf_fop_fxattrop_req_t;
+
+typedef struct {
+	uint32_t dict_len;
+	char  dict[0];
+} __attribute__((packed)) gf_fop_fxattrop_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	uint32_t namelen;
+	char     path[0];
+	char     name[0];
+} __attribute__((packed)) gf_fop_getxattr_req_t;
+typedef struct {
+	uint32_t dict_len;
+	char     dict[0];
+} __attribute__((packed)) gf_fop_getxattr_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	char     path[0];
+	char     name[0];
+} __attribute__((packed)) gf_fop_removexattr_req_t;
+typedef struct { } __attribute__((packed)) gf_fop_removexattr_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	char     path[0];
+} __attribute__((packed)) gf_fop_opendir_req_t;
+typedef struct {
+	int64_t fd;
+} __attribute__((packed)) gf_fop_opendir_rsp_t;
+
+
+typedef struct fsyncdir_req {
+	uint64_t ino;
+	int64_t  fd;
+	int32_t  data;
+} __attribute__((packed)) gf_fop_fsyncdir_req_t;
+typedef struct {
+} __attribute__((packed)) gf_fop_fsyncdir_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	int64_t  fd;
+	uint64_t offset;
+	uint32_t size;
+} __attribute__((packed)) gf_fop_readdir_req_t;
+typedef struct {
+	uint32_t size;
+	char     buf[0];
+} __attribute__((packed)) gf_fop_readdir_rsp_t;
+
+
+typedef struct  {
+	uint64_t ino;
+	uint32_t mask;
+	char     path[0];
+} __attribute__((packed)) gf_fop_access_req_t;
+typedef struct {
+} __attribute__((packed)) gf_fop_access_rsp_t;
+
+
+typedef struct {
+	uint64_t par;
+	uint32_t flags;
+	uint32_t mode;
+	char     path[0];
+	char     bname[0];
+} __attribute__((packed)) gf_fop_create_req_t;
+typedef struct {
+	struct gf_stat stat;
+	uint64_t       fd;
+} __attribute__((packed)) gf_fop_create_rsp_t;
+
+
+
+typedef struct {
+	uint64_t ino;
+	int64_t  fd;
+	uint64_t offset;
+} __attribute__((packed)) gf_fop_ftruncate_req_t;
+typedef struct {
+	struct gf_stat stat;
+} __attribute__((packed)) gf_fop_ftruncate_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	int64_t  fd;
+} __attribute__((packed)) gf_fop_fstat_req_t;
+typedef struct {
+	struct gf_stat stat;
+} __attribute__((packed)) gf_fop_fstat_rsp_t;
+
+
+typedef struct {
+	uint64_t        ino;
+	int64_t         fd;
+	uint32_t        cmd;
+	uint32_t        type;
+	struct gf_flock flock;
+} __attribute__((packed)) gf_fop_lk_req_t;
+typedef struct {
+	struct gf_flock flock;
+} __attribute__((packed)) gf_fop_lk_rsp_t;
+
+typedef struct {
+	uint64_t ino;
+	uint32_t cmd;
+	uint32_t type;
+	struct gf_flock flock;
+	char     path[0];
+} __attribute__((packed)) gf_fop_inodelk_req_t;
+typedef struct {
+} __attribute__((packed)) gf_fop_inodelk_rsp_t;
+
+typedef struct {
+	uint64_t ino;
+	int64_t  fd;
+	uint32_t cmd;
+	uint32_t type;
+	struct gf_flock flock;
+} __attribute__((packed)) gf_fop_finodelk_req_t;
+typedef struct {
+} __attribute__((packed)) gf_fop_finodelk_rsp_t;
+
+typedef struct {
+	uint64_t  ino;
+	uint32_t  cmd;
+	uint32_t  type;
+	uint64_t  namelen;
+	char      path[0];
+	char      name[0];
+} __attribute__((packed)) gf_fop_entrylk_req_t;
+typedef struct {
+} __attribute__((packed)) gf_fop_entrylk_rsp_t;
+
+typedef struct {
+	uint64_t  ino;
+	int64_t   fd;
+	uint32_t  cmd;
+	uint32_t  type;
+	uint64_t  namelen;
+	char      name[0];
+} __attribute__((packed)) gf_fop_fentrylk_req_t;
+typedef struct {
+} __attribute__((packed)) gf_fop_fentrylk_rsp_t;
+
+typedef struct {
+	uint64_t           ino;
+	struct gf_timespec tv[2];
+	char               path[0];
+} __attribute__((packed)) gf_fop_utimens_req_t;
+typedef struct {
+	struct gf_stat stat;
+} __attribute__((packed)) gf_fop_utimens_rsp_t;
+
+typedef struct {
+	uint64_t  ino;
+	uint64_t  fd;
+	uint32_t  mode;
+} __attribute__((packed)) gf_fop_fchmod_req_t;
+typedef struct {
+	struct gf_stat stat;
+} __attribute__((packed)) gf_fop_fchmod_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	int64_t  fd;
+	uint32_t uid;
+	uint32_t gid;
+} __attribute__((packed)) gf_fop_fchown_req_t;
+typedef struct {
+	struct gf_stat stat;
+} __attribute__((packed)) gf_fop_fchown_rsp_t;
+
+
+typedef struct {
+	uint64_t ino; /* NOTE: used only in case of 'root' lookup */
+	uint64_t par;
+	uint32_t flags;
+	uint32_t dictlen;
+	char     path[0];
+	char     bname[0];
+	char     dict[0];
+} __attribute__((packed)) gf_fop_lookup_req_t;
+typedef struct {
+	struct gf_stat stat;
+	uint32_t       dict_len;
+	char           dict[0];
+} __attribute__((packed)) gf_fop_lookup_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	int64_t  fd;
+	uint32_t flags;
+	uint32_t count;
+	char     buf[0];
+} __attribute__((packed)) gf_fop_setdents_req_t;
+typedef struct { } __attribute__((packed)) gf_fop_setdents_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	int64_t  fd;
+	uint64_t offset;
+	uint32_t size;
+	uint32_t flags;
+} __attribute__((packed)) gf_fop_getdents_req_t;
+typedef struct {
+	uint32_t count;
+	char buf[0];
+} __attribute__((packed)) gf_fop_getdents_rsp_t;
+
+
+typedef struct {
+	uint64_t  ino;
+	uint32_t  flag;
+	char      path[0];
+} __attribute__((packed)) gf_fop_checksum_req_t;
+typedef struct {
+	unsigned char fchecksum[0];
+	unsigned char dchecksum[0];
+} __attribute__((packed)) gf_fop_checksum_rsp_t;
+
+
+typedef struct {
+	char name[0];
+} __attribute__((packed)) gf_mop_lock_req_t;
+typedef struct {} __attribute__((packed)) gf_mop_lock_rsp_t;
+
+typedef struct {
+	char name[0];
+} __attribute__((packed)) gf_mop_unlock_req_t;
+typedef struct {} __attribute__((packed)) gf_mop_unlock_rsp_t;
+
+typedef struct {
+	char pattern[0];
+} __attribute__((packed)) gf_mop_listlocks_req_t;
+typedef struct {} __attribute__((packed)) gf_mop_listlocks_rsp_t;
+
+typedef struct {
+	uint32_t  flags;
+} __attribute__((packed)) gf_mop_stats_req_t;
+typedef struct {
+	char buf[0];
+} __attribute__((packed)) gf_mop_stats_rsp_t;
+
+typedef struct {
+	uint32_t flags;
+	uint32_t keylen;
+	char     key[0];
+} __attribute__((packed)) gf_mop_getspec_req_t;
+typedef struct {
+	char spec[0];
+} __attribute__((packed)) gf_mop_getspec_rsp_t;
+
+
+typedef struct {
+	uint32_t dict_len;
+	char buf[0];
+} __attribute__((packed)) gf_mop_setvolume_req_t;
+typedef struct {
+	uint32_t dict_len;
+	char buf[0];
+} __attribute__((packed)) gf_mop_setvolume_rsp_t;
+
+
+typedef struct {
+} __attribute__((packed)) gf_mop_ping_req_t;
+typedef struct {
+} __attribute__((packed)) gf_mop_ping_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	int64_t fd;
+} __attribute__((packed)) gf_cbk_releasedir_req_t;
+typedef struct {
+} __attribute__((packed)) gf_cbk_releasedir_rsp_t;
+
+
+typedef struct {
+	uint64_t ino;
+	int64_t fd;
+} __attribute__((packed)) gf_cbk_release_req_t;
+typedef struct {
+} __attribute__((packed)) gf_cbk_release_rsp_t;
+
+
+typedef struct {
+	uint32_t count;
+	uint64_t ino_array[0];
+} __attribute__((packed)) gf_cbk_forget_req_t;
+typedef struct { } __attribute__((packed)) gf_cbk_forget_rsp_t;
+
+
+typedef struct {
+	uint32_t pid;
+	uint32_t uid;
+	uint32_t gid;
+} __attribute__ ((packed)) gf_hdr_req_t;
+
+
+typedef struct {
+	uint32_t op_ret;
+	uint32_t op_errno;
+} __attribute__ ((packed)) gf_hdr_rsp_t;
+
+
+typedef struct {
+	uint64_t callid;
+	uint32_t type;
+	uint32_t op;
+	uint32_t size;
+	union {
+		gf_hdr_req_t req;
+		gf_hdr_rsp_t rsp;
+	} __attribute__ ((packed));
+} __attribute__ ((packed)) gf_hdr_common_t;
+
+
+static inline gf_hdr_common_t *
+__gf_hdr_new (int size)
+{
+	gf_hdr_common_t *hdr = NULL;
+
+	/* TODO: use mem-pool */
+	hdr = CALLOC (sizeof (gf_hdr_common_t) + size, 1);
+
+	if (!hdr) {
+		return NULL;
+	}
+
+	hdr->size = hton32 (size);
+
+	return hdr;
+}
+
+
+#define gf_hdr_len(type, x) (sizeof (gf_hdr_common_t) + sizeof (*type) + x)
+#define gf_hdr_new(type, x) __gf_hdr_new (sizeof (*type) + x)
+
+
+static inline void *
+gf_param (gf_hdr_common_t *hdr)
+{
+	return ((void *)hdr) + sizeof (*hdr);
+}
+
+#endif