diff options
Diffstat (limited to 'usr.sbin/switchd/proc.h')
| -rw-r--r-- | usr.sbin/switchd/proc.h | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/usr.sbin/switchd/proc.h b/usr.sbin/switchd/proc.h new file mode 100644 index 00000000000..26e82cf517f --- /dev/null +++ b/usr.sbin/switchd/proc.h @@ -0,0 +1,175 @@ +/* $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 */ |