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/* $OpenBSD$ */
/*
* Copyright (c) 2009 Todd Carson <toc@daybefore.net>
*
* 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 MIND, 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 <sys/param.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <procfs.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "tmux.h"
char *
osdep_get_name(__unused int fd, char *tty)
{
struct psinfo p;
struct stat st;
char *path;
ssize_t bytes;
int f;
pid_t pgrp;
if ((f = open(tty, O_RDONLY)) < 0)
return (NULL);
if (fstat(f, &st) != 0 || ioctl(f, TIOCGPGRP, &pgrp) != 0) {
close(f);
return (NULL);
}
close(f);
xasprintf(&path, "/proc/%u/psinfo", (u_int) pgrp);
f = open(path, O_RDONLY);
free(path);
if (f < 0)
return (NULL);
bytes = read(f, &p, sizeof(p));
close(f);
if (bytes != sizeof(p))
return (NULL);
if (p.pr_ttydev != st.st_rdev)
return (NULL);
return (xstrdup(p.pr_fname));
}
char *
osdep_get_cwd(int fd)
{
static char target[MAXPATHLEN + 1];
char *path;
const char *ttypath;
ssize_t n;
pid_t pgrp;
int retval, ttyfd;
if ((ttypath = ptsname(fd)) == NULL)
return (NULL);
if ((ttyfd = open(ttypath, O_RDONLY|O_NOCTTY)) == -1)
return (NULL);
retval = ioctl(ttyfd, TIOCGPGRP, &pgrp);
close(ttyfd);
if (retval == -1)
return (NULL);
xasprintf(&path, "/proc/%u/path/cwd", (u_int) pgrp);
n = readlink(path, target, MAXPATHLEN);
free(path);
if (n > 0) {
target[n] = '\0';
return (target);
}
return (NULL);
}
struct event_base *
osdep_event_init(void)
{
struct event_base *base;
/*
* On Illumos, evports don't seem to work properly. It is not clear if
* this a problem in libevent, with the way tmux uses file descriptors,
* or with some types of file descriptor. But using poll instead is
* fine.
*/
setenv("EVENT_NOEVPORT", "1", 1);
base = event_init();
unsetenv("EVENT_NOEVPORT");
return (base);
}
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