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/* $OpenBSD: proc.h,v 1.1 2016/07/19 16:54:26 reyk Exp $ */
/*
* Copyright (c) 2010-2015 Reyk Floeter <reyk@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <imsg.h>
#include <event.h>
#include "types.h"
#ifndef _PROC_H
#define _PROC_H
struct control_sock {
const char *cs_name;
struct event cs_ev;
struct event cs_evt;
int cs_fd;
int cs_restricted;
void *cs_env;
TAILQ_ENTRY(control_sock) cs_entry;
};
TAILQ_HEAD(control_socks, control_sock);
struct privsep_pipes {
int *pp_pipes[PROC_MAX];
};
struct privsep {
struct privsep_pipes *ps_pipes[PROC_MAX];
struct privsep_pipes *ps_pp;
struct imsgev *ps_ievs[PROC_MAX];
const char *ps_title[PROC_MAX];
pid_t ps_pid[PROC_MAX];
struct passwd *ps_pw;
int ps_noaction;
struct control_sock ps_csock;
struct control_socks ps_rcsocks;
unsigned int ps_instances[PROC_MAX];
unsigned int ps_ninstances;
unsigned int ps_instance;
/* Event and signal handlers */
struct event ps_evsigint;
struct event ps_evsigterm;
struct event ps_evsigchld;
struct event ps_evsighup;
struct event ps_evsigpipe;
struct event ps_evsigusr1;
void *ps_env;
};
struct privsep_proc {
const char *p_title;
enum privsep_procid p_id;
int (*p_cb)(int, struct privsep_proc *,
struct imsg *);
pid_t (*p_init)(struct privsep *,
struct privsep_proc *);
const char *p_chroot;
struct privsep *p_ps;
void *p_env;
void (*p_shutdown)(void);
unsigned int p_instance;
};
struct imsgev {
struct imsgbuf ibuf;
void (*handler)(int, short, void *);
struct event ev;
struct privsep_proc *proc;
void *data;
short events;
const char *name;
};
#ifndef IMSG_DATA_SIZE
#define IMSG_DATA_SIZE(_imsg) ((_imsg)->hdr.len - IMSG_HEADER_SIZE)
#endif
#ifndef IMSG_SIZE_CHECK
#define IMSG_SIZE_CHECK(_imsg, _type) \
do { \
if (IMSG_DATA_SIZE(_imsg) < sizeof(*(_type))) \
fatal("received imsg size was wrong."); \
} while (0 /* CONSTCOND */)
#endif
struct ctl_conn {
TAILQ_ENTRY(ctl_conn) entry;
uint8_t flags;
#define CTL_CONN_NOTIFY 0x01
struct imsgev iev;
int restricted;
};
TAILQ_HEAD(ctl_connlist, ctl_conn);
extern struct ctl_connlist ctl_conns;
/* proc.c */
void proc_init(struct privsep *, struct privsep_proc *, unsigned int);
void proc_kill(struct privsep *);
void proc_listen(struct privsep *, struct privsep_proc *, size_t);
void proc_dispatch(int, short event, void *);
pid_t proc_run(struct privsep *, struct privsep_proc *,
struct privsep_proc *, unsigned int,
void (*)(struct privsep *, struct privsep_proc *, void *), void *);
void imsg_event_add(struct imsgev *);
int imsg_compose_event(struct imsgev *, uint16_t, uint32_t,
pid_t, int, void *, uint16_t);
int imsg_composev_event(struct imsgev *, uint16_t, uint32_t,
pid_t, int, const struct iovec *, int);
int proc_compose_imsg(struct privsep *, enum privsep_procid, int,
uint16_t, uint32_t, int, void *, uint16_t);
int proc_compose(struct privsep *, enum privsep_procid,
uint16_t, void *data, uint16_t);
int proc_composev_imsg(struct privsep *, enum privsep_procid, int,
uint16_t, uint32_t, int, const struct iovec *, int);
int proc_composev(struct privsep *, enum privsep_procid,
uint16_t, const struct iovec *, int);
int proc_forward_imsg(struct privsep *, struct imsg *,
enum privsep_procid, int);
struct imsgbuf *
proc_ibuf(struct privsep *, enum privsep_procid, int);
struct imsgev *
proc_iev(struct privsep *, enum privsep_procid, int);
/* control.c */
int control_init(struct privsep *, struct control_sock *);
int control_listen(struct control_sock *);
void control_cleanup(struct control_sock *);
struct ctl_conn
*control_connbyfd(int);
pid_t control(struct privsep *, struct privsep_proc *);
/* log.c */
void log_init(int, int);
void log_procinit(const char *);
void log_verbose(int);
void log_warn(const char *, ...)
__attribute__((__format__ (printf, 1, 2)));
void log_warnx(const char *, ...)
__attribute__((__format__ (printf, 1, 2)));
void log_info(const char *, ...)
__attribute__((__format__ (printf, 1, 2)));
void log_debug(const char *, ...)
__attribute__((__format__ (printf, 1, 2)));
void logit(int, const char *, ...)
__attribute__((__format__ (printf, 2, 3)));
void vlog(int, const char *, va_list)
__attribute__((__format__ (printf, 2, 0)));
__dead void fatal(const char *, ...)
__attribute__((__format__ (printf, 1, 2)));
__dead void fatalx(const char *, ...)
__attribute__((__format__ (printf, 1, 2)));
void socket_set_blockmode(int, enum blockmodes);
#endif /* _PROC_H */
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