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/* pluto_fork, for libreswan
*
* Copyright (C) 2020 Andrew Cagney
*
* 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. See <https://www.gnu.org/licenses/gpl2.txt>.
*
* 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.
*/
#ifndef PLUTO_FORK_H
#define PLUTO_FORK_H
struct logger;
struct msg_digest;
struct state;
struct show;
/*
* Create a child process using fork()
*
* Typically used to perform a thread unfriendly operation, such as
* calling PAM.
*
* On callback:
*
* ST either points at the state matching SERIALNO, or NULL (SERIALNO
* is either SOS_NOBODY or the state doesn't exist). A CB expecting a
* state back MUST check ST before processing. Caller sets CUR_STATE
* so don't play with that.
*
* MDP either points at the unsuspended contents of .st_suspended_md,
* or NULL. On return, if *MDP is non-NULL, then it will be released.
*
* STATUS is the child processes exit code as returned by things like
* waitpid().
*/
typedef void server_fork_cb(struct state *st, struct msg_digest *md,
int status, void *context, struct logger *logger);
typedef int server_fork_op(void *context, struct logger *logger);
extern int server_fork(const char *name, so_serial_t serialno, server_fork_op *op,
server_fork_cb *callback, void *callback_context,
struct logger *logger);
void server_fork_exec(const char *what, const char *path,
char *argv[], char *envp[],
server_fork_cb *callback, void *callback_context,
struct logger *logger);
void server_fork_sigchld_handler(struct logger *logger);
void init_server_fork(void);
void show_process_status(struct show *s);
#endif /* _SERVER_H */
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