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/* upstart
*
* Copyright © 2008 Canonical Ltd.
* Author: Scott James Remnant <scott@netsplit.com>.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef INIT_PROCESS_H
#define INIT_PROCESS_H
#include <sys/types.h>
#include <nih/macros.h>
#include <nih/error.h>
#include "job.h"
/**
* ProcessErrorType:
*
* These constants represent the different steps of process spawning that
* can produce an error.
**/
typedef enum process_error_type {
PROCESS_ERROR_CONSOLE,
PROCESS_ERROR_RLIMIT,
PROCESS_ERROR_PRIORITY,
PROCESS_ERROR_CHROOT,
PROCESS_ERROR_CHDIR,
PROCESS_ERROR_PTRACE,
PROCESS_ERROR_EXEC
} ProcessErrorType;
/**
* ProcessError:
* @error: ordinary NihError,
* @type: specific error,
* @arg: relevant argument to @type,
* @errnum: system error number.
*
* This structure builds on NihError to include additional fields useful
* for an error generated by spawning a process. @error includes the single
* error number and human-readable message which are sufficient for many
* purposes.
*
* @type indicates which step of the spawning process failed, @arg is any
* information relevant to @type (such as the resource limit that could not
* be set) and @errnum is the actual system error number.
*
* If you receive a PROCESS_ERROR, the returned NihError structure is actually
* this structure and can be cast to get the additional fields.
**/
typedef struct process_error {
NihError error;
ProcessErrorType type;
int arg;
int errnum;
} ProcessError;
NIH_BEGIN_EXTERN
pid_t process_spawn (JobConfig *config, char * const argv[],
char * const *env, int trace)
__attribute__ ((warn_unused_result));
int process_kill (JobConfig *config, pid_t pid, int force)
__attribute__ ((warn_unused_result));
int process_setup_console (ConsoleType type, int reset)
__attribute__ ((warn_unused_result));
NIH_END_EXTERN
#endif /* INIT_PROCESS_H */
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