/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
 *
 * Copyright (C) 2006 William Jon McCann <mccann@jhu.edu>
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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 __CK_SYSDEPS_H
#define __CK_SYSDEPS_H

#include "config.h"

#include <glib.h>

G_BEGIN_DECLS

typedef struct _CkProcessStat CkProcessStat;

gboolean     ck_sysdeps_init                  (void);
void         ck_sysdeps_fini                  (void);

gboolean     ck_process_stat_new_for_unix_pid (pid_t           pid,
                                               CkProcessStat **stat,
                                               GError        **error);
pid_t        ck_process_stat_get_ppid         (CkProcessStat  *stat);
char        *ck_process_stat_get_tty          (CkProcessStat  *stat);
char        *ck_process_stat_get_cmd          (CkProcessStat  *stat);
void         ck_process_stat_free             (CkProcessStat  *stat);


char        *ck_unix_pid_get_env              (pid_t           pid,
                                               const char     *var);

GHashTable  *ck_unix_pid_get_env_hash         (pid_t           pid);

pid_t        ck_unix_pid_get_ppid             (pid_t           pid);
uid_t        ck_unix_pid_get_uid              (pid_t           pid);
gboolean     ck_unix_pid_get_login_session_id (pid_t           pid,
                                               char          **id);


gboolean     ck_get_socket_peer_credentials   (int             socket_fd,
                                               pid_t          *pid,
                                               uid_t          *uid,
                                               GError        **error);

int          ck_get_a_console_fd              (void);

gboolean     ck_fd_is_a_console               (int             fd,
                                               const gchar    *fnam);

int          ck_open_a_console                (char *fnam);

gboolean     ck_is_root_user                  (void);

gchar *      ck_generate_runtime_dir_for_user (guint           uid);

gboolean     ck_remove_runtime_dir_for_user   (guint           uid);

gboolean     ck_make_tmpfs                    (guint           uid,
                                               guint           gid,
                                               const gchar    *dest);
gboolean     ck_remove_tmpfs                  (guint           uid,
                                               const gchar    *dest);

gboolean     ck_get_max_num_consoles          (guint          *num);
gboolean     ck_supports_activatable_consoles (void);

char *       ck_get_console_device_for_num    (guint           num);
gboolean     ck_get_console_num_from_device   (const char     *device,
                                               guint          *num);
gboolean     ck_get_active_console_num        (int             console_fd,
                                               guint          *num);
gboolean     ck_activate_console_num          (int             console_fd,
                                               guint           num);
gboolean     ck_wait_for_active_console_num   (int             console_fd,
                                               guint           num);

gboolean     ck_system_can_suspend            (void);
gboolean     ck_system_can_hibernate          (void);
gboolean     ck_system_can_hybrid_sleep       (void);


#ifdef HAVE_SYS_VT_SIGNAL
gint         ck_get_vt_signal_fd              (void);
gboolean     ck_wait_for_console_switch       (gint            sys_fd,
                                               gint32         *num);
#endif /* HAVE_SYS_VT_SIGNAL */


/* compiling with --enable-debug=full enables TRACE messages */
#if defined(CONSOLEKIT_DEBUGGING)

#if defined(__NetBSD__) || (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L)
#define __DBG_FUNC__    __func__
#elif defined(__GNUC__) && __GNUC__ >= 3
#define __DBG_FUNC__    __FUNCTION__
#elif defined(__SVR4) && defined(__sun)
#define __DBG_FUNC__    __func__
#else
#define __DBG_FUNC__    "??"
#endif

#if defined(G_HAVE_ISO_VARARGS)

#define TRACE(...)              G_STMT_START{                                \
    g_debug ("TRACE[%s:%d] %s(): entering",__FILE__,__LINE__,__DBG_FUNC__);  \
}G_STMT_END

#elif defined (G_HAVE_GNUC_VARARGS)

#define TRACE(fmt, args...)     G_STMT_START{                                \
    g_debug ("TRACE[%s:%d] %s(): entering",__FILE__,__LINE__,__DBG_FUNC__);  \
}G_STMT_END

#endif

#else /* !defined(CONSOLEKIT_DEBUGGING) */

#define TRACE(...) G_STMT_START{ (void)0; }G_STMT_END

#endif

G_END_DECLS

#endif /* __CK_SYSDEPS_H */