/* $OpenBSD: proc.c,v 1.41 2021/12/04 06:52:58 florian Exp $ */

/*

* Copyright (c) 2010 - 2016 Reyk Floeter <reyk@openbsd.org>

* Copyright (c) 2008 Pierre-Yves Ritschard <pyr@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 "gmid.h"

#include <sys/types.h>

/* #include <sys/queue.h> XXX provided by gmid.h */

/* #include <sys/tree.h> XXX provided by gmid.h */

#include <sys/socket.h>

#include <sys/wait.h>

#include <fcntl.h>

#include <grp.h>

#include <limits.h>

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <string.h>

#include <errno.h>

#include <signal.h>

#include <paths.h>

#include <pwd.h>

/* #include <event.h> XXX provided by gmid.h */

/* #include <imsg.h> XXX provided by gmid.h */

#include "log.h"

#include "proc.h"

void proc_exec(struct privsep *, struct privsep_proc *, unsigned int, int,

int, char **);

void proc_setup(struct privsep *, struct privsep_proc *, unsigned int);

void proc_open(struct privsep *, int, int);

void proc_accept(struct privsep *, int, enum privsep_procid,

unsigned int);

void proc_close(struct privsep *);

void proc_shutdown(struct privsep_proc *);

void proc_sig_handler(int, short, void *);

void proc_range(struct privsep *, enum privsep_procid, int *, int *);

int proc_dispatch_null(int, struct privsep_proc *, struct imsg *);

enum privsep_procid

proc_getid(struct privsep_proc *procs, unsigned int nproc,

const char *proc_name)

{

struct privsep_proc *p;

unsigned int proc;

for (proc = 0; proc < nproc; proc++) {

p = &procs[proc];

if (strcmp(p->p_title, proc_name))

continue;

return (p->p_id);

}

return (PROC_MAX);

}

void

proc_exec(struct privsep *ps, struct privsep_proc *procs, unsigned int nproc,

int debug, int argc, char **argv)

{

unsigned int proc, nargc, i, proc_i, proc_X = 0;

const char **nargv;

struct privsep_proc *p;

char num[32], prefork[32];

int fd;

/* Prepare the new process argv. */

nargv = calloc(argc + 11, sizeof(char *));

if (nargv == NULL)

fatal("%s: calloc", __func__);

/* Update prefork number */

snprintf(prefork, sizeof(prefork), "%d", ps->ps_instances[PROC_SERVER]);

/* Copy call argument first. */

nargc = 0;

nargv[nargc++] = argv[0];

/* Set process name argument and save the position. */

nargv[nargc++] = "-T";

proc_i = nargc;

nargc++;

/* Set user and chroot */

if (ps->ps_pw != NULL) {

nargv[nargc++] = "-U";

nargv[nargc++] = ps->ps_pw->pw_name;

nargv[nargc++] = "-X";

proc_X = nargc;

nargc++;

}

/* Set server prefork number */

nargv[nargc++] = "-J";

nargv[nargc++] = prefork;

/* Point process instance arg to stack and copy the original args. */

nargv[nargc++] = "-I";

nargv[nargc++] = num;

for (i = 1; i < (unsigned int) argc; i++)

nargv[nargc++] = argv[i];

nargv[nargc] = NULL;

for (proc = 0; proc < nproc; proc++) {

p = &procs[proc];

/* Update args with process title and chroot. */

nargv[proc_i] = (char *)(uintptr_t)p->p_title;

if (proc_X)

nargv[proc_X] = p->p_chroot;

/* Fire children processes. */

for (i = 0; i < ps->ps_instances[p->p_id]; i++) {

/* Update the process instance number. */

snprintf(num, sizeof(num), "%u", i);

fd = ps->ps_pipes[p->p_id][i].pp_pipes[PROC_PARENT][0];

ps->ps_pipes[p->p_id][i].pp_pipes[PROC_PARENT][0] = -1;

switch (fork()) {

case -1:

fatal("%s: fork", __func__);

break;

case 0:

/* First create a new session */

if (setsid() == -1)

fatal("setsid");

/* Prepare parent socket. */

if (fd != PROC_PARENT_SOCK_FILENO) {

if (dup2(fd, PROC_PARENT_SOCK_FILENO)

== -1)

fatal("dup2");

} else if (fcntl(fd, F_SETFD, 0) == -1)

fatal("fcntl");

/* Daemons detach from terminal. */

if (!debug && (fd =

open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {

(void)dup2(fd, STDIN_FILENO);

(void)dup2(fd, STDOUT_FILENO);

(void)dup2(fd, STDERR_FILENO);

if (fd > 2)

(void)close(fd);

}

/* obnoxious casts */

execvp(argv[0], (char *const *)nargv);

fatal("%s: execvp", __func__);

break;

default:

/* Close child end. */

close(fd);

break;

}

}

}

free(nargv);

}

void

proc_connect(struct privsep *ps)

{

struct imsgev *iev;

unsigned int src, dst, inst;

/* Don't distribute any sockets if we are not really going to run. */

if (ps->ps_noaction)

return;

for (dst = 0; dst < PROC_MAX; dst++) {

/* We don't communicate with ourselves. */

if (dst == PROC_PARENT)

continue;

for (inst = 0; inst < ps->ps_instances[dst]; inst++) {

iev = &ps->ps_ievs[dst][inst];

if (imsgbuf_init(&iev->ibuf,

ps->ps_pp->pp_pipes[dst][inst]) == -1)

fatal("imsgbuf_init");

imsgbuf_allow_fdpass(&iev->ibuf);

event_set(&iev->ev, iev->ibuf.fd, iev->events,

iev->handler, iev->data);

event_add(&iev->ev, NULL);

}

}

/* Distribute the socketpair()s for everyone. */

for (src = 0; src < PROC_MAX; src++)

for (dst = src; dst < PROC_MAX; dst++) {

/* Parent already distributed its fds. */

if (src == PROC_PARENT || dst == PROC_PARENT)

continue;

proc_open(ps, src, dst);

}

}

void

proc_init(struct privsep *ps, struct privsep_proc *procs, unsigned int nproc,

int debug, int argc, char **argv, enum privsep_procid proc_id)

{

struct privsep_proc *p = NULL;

struct privsep_pipes *pa, *pb;

unsigned int proc;

unsigned int dst;

int fds[2];

/* Don't initiate anything if we are not really going to run. */

if (ps->ps_noaction)

return;

if (proc_id == PROC_PARENT) {

privsep_process = PROC_PARENT;

proc_setup(ps, procs, nproc);

/*

* Create the children sockets so we can use them

* to distribute the rest of the socketpair()s using

* proc_connect() later.

*/

for (dst = 0; dst < PROC_MAX; dst++) {

/* Don't create socket for ourselves. */

if (dst == PROC_PARENT)

continue;

for (proc = 0; proc < ps->ps_instances[dst]; proc++) {

pa = &ps->ps_pipes[PROC_PARENT][0];

pb = &ps->ps_pipes[dst][proc];

if (socketpair(AF_UNIX, SOCK_STREAM,

PF_UNSPEC, fds) == -1)

fatal("%s: socketpair", __func__);

mark_nonblock(fds[0]);

mark_nonblock(fds[1]);

if (fcntl(fds[0], F_SETFD, FD_CLOEXEC) == -1 ||

fcntl(fds[1], F_SETFD, FD_CLOEXEC) == -1)

fatal("%s: fcntl F_SETFD", __func__);

pa->pp_pipes[dst][proc] = fds[0];

pb->pp_pipes[PROC_PARENT][0] = fds[1];

}

}

/* Engage! */

proc_exec(ps, procs, nproc, debug, argc, argv);

return;

}

/* Initialize a child */

for (proc = 0; proc < nproc; proc++) {

if (procs[proc].p_id != proc_id)

continue;

p = &procs[proc];

break;

}

if (p == NULL || p->p_init == NULL)

fatalx("%s: process %d missing process initialization",

__func__, proc_id);

p->p_init(ps, p);

fatalx("failed to initiate child process");

}

void

proc_accept(struct privsep *ps, int fd, enum privsep_procid dst,

unsigned int n)

{

struct privsep_pipes *pp = ps->ps_pp;

struct imsgev *iev;

if (ps->ps_ievs[dst] == NULL) {

#if DEBUG > 1

log_debug("%s: %s src %d %d to dst %d %d not connected",

__func__, ps->ps_title[privsep_process],

privsep_process, ps->ps_instance + 1,

dst, n + 1);

#endif

close(fd);

return;

}

if (pp->pp_pipes[dst][n] != -1) {

log_warnx("%s: duplicated descriptor", __func__);

close(fd);

return;

} else

pp->pp_pipes[dst][n] = fd;

iev = &ps->ps_ievs[dst][n];

if (imsgbuf_init(&iev->ibuf, fd) == -1)

fatal("imsgbuf_init");

imsgbuf_allow_fdpass(&iev->ibuf);

event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev->data);

event_add(&iev->ev, NULL);

}

void

proc_setup(struct privsep *ps, struct privsep_proc *procs, unsigned int nproc)

{

unsigned int i, j, src, dst, id;

struct privsep_pipes *pp;

/* Initialize parent title, ps_instances and procs. */

ps->ps_title[PROC_PARENT] = "parent";

for (src = 0; src < PROC_MAX; src++)

/* Default to 1 process instance */

if (ps->ps_instances[src] < 1)

ps->ps_instances[src] = 1;

for (src = 0; src < nproc; src++) {

procs[src].p_ps = ps;

if (procs[src].p_cb == NULL)

procs[src].p_cb = proc_dispatch_null;

id = procs[src].p_id;

ps->ps_title[id] = procs[src].p_title;

if ((ps->ps_ievs[id] = calloc(ps->ps_instances[id],

sizeof(struct imsgev))) == NULL)

fatal("%s: calloc", __func__);

/* With this set up, we are ready to call imsg_init(). */

for (i = 0; i < ps->ps_instances[id]; i++) {

ps->ps_ievs[id][i].handler = proc_dispatch;

ps->ps_ievs[id][i].events = EV_READ;

ps->ps_ievs[id][i].proc = &procs[src];

ps->ps_ievs[id][i].data = &ps->ps_ievs[id][i];

}

}

/*

* Allocate pipes for all process instances (incl. parent)

*

* - ps->ps_pipes: N:M mapping

* N source processes connected to M destination processes:

* [src][instances][dst][instances], for example

* [PROC_RELAY][3][PROC_CA][3]

*

* - ps->ps_pp: per-process 1:M part of ps->ps_pipes

* Each process instance has a destination array of socketpair fds:

* [dst][instances], for example

* [PROC_PARENT][0]

*/

for (src = 0; src < PROC_MAX; src++) {

/* Allocate destination array for each process */

if ((ps->ps_pipes[src] = calloc(ps->ps_instances[src],

sizeof(struct privsep_pipes))) == NULL)

fatal("%s: calloc", __func__);

for (i = 0; i < ps->ps_instances[src]; i++) {

pp = &ps->ps_pipes[src][i];

for (dst = 0; dst < PROC_MAX; dst++) {

/* Allocate maximum fd integers */

if ((pp->pp_pipes[dst] =

calloc(ps->ps_instances[dst],

sizeof(int))) == NULL)

fatal("%s: calloc", __func__);

/* Mark fd as unused */

for (j = 0; j < ps->ps_instances[dst]; j++)

pp->pp_pipes[dst][j] = -1;

}

}

}

ps->ps_pp = &ps->ps_pipes[privsep_process][ps->ps_instance];

}

void

proc_kill(struct privsep *ps)

{

char *cause;

pid_t pid;

int len, status;

if (privsep_process != PROC_PARENT)

return;

proc_close(ps);

do {

pid = waitpid(WAIT_ANY, &status, 0);

if (pid <= 0)

continue;

if (WIFSIGNALED(status)) {

len = asprintf(&cause, "terminated; signal %d",

WTERMSIG(status));

} else if (WIFEXITED(status)) {

if (WEXITSTATUS(status) != 0)

len = asprintf(&cause, "exited abnormally");

else

len = 0;

} else

len = -1;

if (len == 0) {

/* child exited OK, don't print a warning message */

} else if (len != -1) {

log_warnx("lost child: pid %u %s", pid, cause);

free(cause);

} else

log_warnx("lost child: pid %u", pid);

} while (pid != -1 || errno == EINTR);

}

void

proc_open(struct privsep *ps, int src, int dst)

{

struct privsep_pipes *pa, *pb;

struct privsep_fd pf;

int fds[2];

unsigned int i, j;

/* Exchange pipes between process. */

for (i = 0; i < ps->ps_instances[src]; i++) {

for (j = 0; j < ps->ps_instances[dst]; j++) {

/* Don't create sockets for ourself. */

if (src == dst && i == j)

continue;

/* Servers don't talk to each other. */

if (src == PROC_SERVER && dst == PROC_SERVER)

continue;

pa = &ps->ps_pipes[src][i];

pb = &ps->ps_pipes[dst][j];

if (socketpair(AF_UNIX,

SOCK_STREAM,

PF_UNSPEC, fds) == -1)

fatal("%s: socketpair", __func__);

mark_nonblock(fds[0]);

mark_nonblock(fds[1]);

if (fcntl(fds[0], F_SETFD, FD_CLOEXEC) == -1 ||

fcntl(fds[1], F_SETFD, FD_CLOEXEC) == -1)

fatal("%s: fcntl F_SETFD", __func__);

pa->pp_pipes[dst][j] = fds[0];

pb->pp_pipes[src][i] = fds[1];

pf.pf_procid = src;

pf.pf_instance = i;

if (proc_compose_imsg(ps, dst, j, IMSG_CTL_PROCFD,

-1, pb->pp_pipes[src][i], &pf, sizeof(pf)) == -1)

fatal("%s: proc_compose_imsg", __func__);

pf.pf_procid = dst;

pf.pf_instance = j;

if (proc_compose_imsg(ps, src, i, IMSG_CTL_PROCFD,

-1, pa->pp_pipes[dst][j], &pf, sizeof(pf)) == -1)

fatal("%s: proc_compose_imsg", __func__);

/*

* We have to flush to send the descriptors and close

* them to avoid the fd ramp on startup.

*/

if (proc_flush_imsg(ps, src, i) == -1 ||

proc_flush_imsg(ps, dst, j) == -1)

fatal("%s: imsg_flush", __func__);

}

}

}

void

proc_close(struct privsep *ps)

{

unsigned int dst, n;

struct privsep_pipes *pp;

if (ps == NULL)

return;

pp = ps->ps_pp;

for (dst = 0; dst < PROC_MAX; dst++) {

if (ps->ps_ievs[dst] == NULL)

continue;

for (n = 0; n < ps->ps_instances[dst]; n++) {

if (pp->pp_pipes[dst][n] == -1)

continue;

/* Cancel the fd, close and invalidate the fd */

event_del(&(ps->ps_ievs[dst][n].ev));

imsgbuf_clear(&(ps->ps_ievs[dst][n].ibuf));

close(pp->pp_pipes[dst][n]);

pp->pp_pipes[dst][n] = -1;

}

free(ps->ps_ievs[dst]);

}

}

void

proc_shutdown(struct privsep_proc *p)

{

struct privsep *ps = p->p_ps;

if (p->p_shutdown != NULL)

(*p->p_shutdown)();

proc_close(ps);

log_info("%s exiting, pid %d", p->p_title, getpid());

exit(0);

}

void

proc_sig_handler(int sig, short event, void *arg)

{

struct privsep_proc *p = arg;

switch (sig) {

case SIGINT:

case SIGTERM:

proc_shutdown(p);

break;

case SIGCHLD:

case SIGHUP:

/* ignore */

break;

default:

fatalx("%s: unexpected signal", __func__);

/* NOTREACHED */

}

}

void

proc_run(struct privsep *ps, struct privsep_proc *p,

struct privsep_proc *procs, unsigned int nproc,

void (*run)(struct privsep *, struct privsep_proc *, void *), void *arg)

{

struct passwd *pw;

const char *root;

log_procinit(p->p_title);

setproctitle("%s", p->p_title);

privsep_process = p->p_id;

if (ps->ps_pw == NULL)

goto init;

/* Set the process group of the current process */

setpgid(0, 0);

/* Use non-standard user */

if (p->p_pw != NULL)

pw = p->p_pw;

else

pw = ps->ps_pw;

/* Change root directory */

if (p->p_chroot != NULL)

root = p->p_chroot;

else

root = pw->pw_dir;

if (chroot(root) == -1)

fatal("%s: chroot", __func__);

if (chdir("/") == -1)

fatal("%s: chdir(\"/\")", __func__);

if (setgroups(1, &pw->pw_gid) ||

setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) ||

setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid))

fatal("%s: cannot drop privileges", __func__);

init:

event_init();

signal(SIGPIPE, SIG_IGN);

signal_set(&ps->ps_evsigint, SIGINT, proc_sig_handler, p);

signal_set(&ps->ps_evsigterm, SIGTERM, proc_sig_handler, p);

signal_set(&ps->ps_evsigchld, SIGCHLD, proc_sig_handler, p);

signal_set(&ps->ps_evsighup, SIGHUP, proc_sig_handler, p);

signal_add(&ps->ps_evsigint, NULL);

signal_add(&ps->ps_evsigterm, NULL);

signal_add(&ps->ps_evsigchld, NULL);

signal_add(&ps->ps_evsighup, NULL);

proc_setup(ps, procs, nproc);

proc_accept(ps, PROC_PARENT_SOCK_FILENO, PROC_PARENT, 0);

log_debug("%s: %s %d/%d, pid %d", __func__, p->p_title,

ps->ps_instance + 1, ps->ps_instances[p->p_id], getpid());

if (run != NULL)

run(ps, p, arg);

event_dispatch();

proc_shutdown(p);

}

void

proc_dispatch(int fd, short event, void *arg)

{

struct imsgev *iev = arg;

struct privsep_proc *p = iev->proc;

struct privsep *ps = p->p_ps;

struct imsgbuf *ibuf;

struct imsg imsg;

ssize_t n;

const char *title;

struct privsep_fd pf;

title = ps->ps_title[privsep_process];

ibuf = &iev->ibuf;

if (event & EV_READ) {

if ((n = imsgbuf_read(ibuf)) == -1)

fatal("%s: imsg_read", __func__);

if (n == 0) {

/* this pipe is dead, so remove the event handler */

event_del(&iev->ev);

event_loopexit(NULL);

return;

}

}

if (event & EV_WRITE) {

if (imsgbuf_write(ibuf) == -1) {

/* this pipe is dead, so remove the event handler */

log_warn("imsgbuf_write");

event_del(&iev->ev);

event_loopexit(NULL);

return;

}

}

for (;;) {

if ((n = imsg_get(ibuf, &imsg)) == -1)

fatal("%s: imsg_get", __func__);

if (n == 0)

break;

#if DEBUG > 1

log_debug("%s: %s %d got imsg %d peerid %d from %s %d",

__func__, title, ps->ps_instance + 1,

imsg.hdr.type, imsg.hdr.peerid, p->p_title, imsg.hdr.pid);

#endif

/*

* Check the message with the program callback

*/

if ((p->p_cb)(fd, p, &imsg) == 0) {

/* Message was handled by the callback, continue */

imsg_free(&imsg);

continue;

}

/*

* Generic message handling

*/

switch (imsg.hdr.type) {

case IMSG_CTL_PROCFD:

if (imsg_get_data(&imsg, &pf, sizeof(pf)))

fatalx("bad length imsg CTL_PROCFD");

proc_accept(ps, imsg_get_fd(&imsg), pf.pf_procid,

pf.pf_instance);

break;

default:

fatalx("%s: %s %d got invalid imsg %d peerid %d "

"from %s %d",

__func__, title, ps->ps_instance + 1,

imsg.hdr.type, imsg.hdr.peerid,

p->p_title, imsg.hdr.pid);

}

imsg_free(&imsg);

}

imsg_event_add(iev);

}

int

proc_dispatch_null(int fd, struct privsep_proc *p, struct imsg *imsg)

{

return (-1);

}

/*

* imsg helper functions

*/

void

imsg_event_add(struct imsgev *iev)

{

if (iev->handler == NULL) {

imsgbuf_flush(&iev->ibuf);

return;

}

iev->events = EV_READ;

if (imsgbuf_queuelen(&iev->ibuf))

iev->events |= EV_WRITE;

event_del(&iev->ev);

event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev->data);

event_add(&iev->ev, NULL);

}

int

imsg_compose_event(struct imsgev *iev, uint16_t type, uint32_t peerid,

pid_t pid, int fd, void *data, uint16_t datalen)

{

int ret;

if ((ret = imsg_compose(&iev->ibuf, type, peerid,

pid, fd, data, datalen)) == -1)

return (ret);

imsg_event_add(iev);

return (ret);

}

int

imsg_composev_event(struct imsgev *iev, uint16_t type, uint32_t peerid,

pid_t pid, int fd, const struct iovec *iov, int iovcnt)

{

int ret;

if ((ret = imsg_composev(&iev->ibuf, type, peerid,

pid, fd, iov, iovcnt)) == -1)

return (ret);

imsg_event_add(iev);

return (ret);

}

void

proc_range(struct privsep *ps, enum privsep_procid id, int *n, int *m)

{

if (*n == -1) {

/* Use a range of all target instances */

*n = 0;

*m = ps->ps_instances[id];

} else {

/* Use only a single slot of the specified peer process */

*m = *n + 1;

}

}

int

proc_compose_imsg(struct privsep *ps, enum privsep_procid id, int n,

uint16_t type, uint32_t peerid, int fd, void *data, uint16_t datalen)

{

int m;

proc_range(ps, id, &n, &m);

for (; n < m; n++) {

if (imsg_compose_event(&ps->ps_ievs[id][n],

type, peerid, ps->ps_instance + 1, fd, data, datalen) == -1)

return (-1);

}

return (0);

}

int

proc_compose(struct privsep *ps, enum privsep_procid id,

uint16_t type, void *data, uint16_t datalen)

{

return (proc_compose_imsg(ps, id, -1, type, -1, -1, data, datalen));

}

int

proc_composev_imsg(struct privsep *ps, enum privsep_procid id, int n,

uint16_t type, uint32_t peerid, int fd, const struct iovec *iov, int iovcnt)

{

int m;

proc_range(ps, id, &n, &m);

for (; n < m; n++)

if (imsg_composev_event(&ps->ps_ievs[id][n],

type, peerid, ps->ps_instance + 1, fd, iov, iovcnt) == -1)

return (-1);

return (0);

}

int

proc_composev(struct privsep *ps, enum privsep_procid id,

uint16_t type, const struct iovec *iov, int iovcnt)

{

return (proc_composev_imsg(ps, id, -1, type, -1, -1, iov, iovcnt));

}

struct imsgbuf *

proc_ibuf(struct privsep *ps, enum privsep_procid id, int n)

{

int m;

proc_range(ps, id, &n, &m);

return (&ps->ps_ievs[id][n].ibuf);

}

struct imsgev *

proc_iev(struct privsep *ps, enum privsep_procid id, int n)

{

int m;

proc_range(ps, id, &n, &m);

return (&ps->ps_ievs[id][n]);

}

/* This function should only be called with care as it breaks async I/O */

int

proc_flush_imsg(struct privsep *ps, enum privsep_procid id, int n)

{

struct imsgbuf *ibuf;

int m, ret = 0;

proc_range(ps, id, &n, &m);

for (; n < m; n++) {

if ((ibuf = proc_ibuf(ps, id, n)) == NULL)

return (-1);

if (imsgbuf_flush(ibuf) == -1)

break;

imsg_event_add(&ps->ps_ievs[id][n]);

}

return (ret);

}