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/*
* 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; version 2 of the License.
*
* 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 PROCESS_H
#define PROCESS_H
#include <stdbool.h>
#include <sys/types.h>
#include <list/list.h>
#include <waiter/waiter.h>
struct process;
struct procset;
typedef void (*process_exit_cb)(struct process *);
struct process {
/* caller-provided configuration */
const char *path;
const char **argv;
bool keep_stdout;
bool add_stderr;
process_exit_cb exit_cb;
void *data;
/* runtime data */
pid_t pid;
int stdout_len;
char *stdout_buf;
/* post-execution information */
int exit_status;
};
/* Process management system init. process_init must be called before
* process_create. The pointer returned can be talloc_free()-ed, or can be
* automatically freed through destruction of the ctx talloc tree.
*/
struct procset *process_init(void *ctx, struct waitset *set, bool dry_run);
struct process *process_create(void *ctx);
/* process_release: release our reference to the process, but potentially
* leave it running. When the process exits, associated resources will
* be deallocated.
*/
void process_release(struct process *process);
/* Synchronous interface. These functions will all block while waiting for
* the process to exit.
*/
int process_run_sync(struct process *process);
int process_run_simple_argv(void *ctx, const char *argv[]);
int process_run_simple(void *ctx, const char *name, ...)
__attribute__((sentinel(0)));
/* Asynchronous interface. When a process is run with process_run_async, the
* function returns without wait()ing for the child process to exit. If the
* process' exit_cb member is set, that callback will be invoked when the
* process exits.
*/
int process_run_async(struct process *process);
void process_stop_async(struct process *process);
/* helper function to determine if a process exited cleanly, with a non-zero
* exit status */
bool process_exit_ok(struct process *process);
#endif /* PROCESS_H */
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