osdep-sunos.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2009 Todd Carson <toc@daybefore.net>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
  15  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  16  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #include <sys/param.h>
  20 #include <sys/stat.h>
  21
  22 #include <fcntl.h>
  23 #include <procfs.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <unistd.h>
  27
  28 #include "tmux.h"
  29
  30 char *
  31 osdep_get_name(__unused int fd, char *tty)
  32 {
  33         struct psinfo    p;
  34         struct stat      st;
  35         char            *path;
  36         ssize_t          bytes;
  37         int              f;
  38         pid_t            pgrp;
  39
  40         if ((f = open(tty, O_RDONLY)) < 0)
  41                 return (NULL);
  42
  43         if (fstat(f, &st) != 0 || ioctl(f, TIOCGPGRP, &pgrp) != 0) {
  44                 close(f);
  45                 return (NULL);
  46         }
  47         close(f);
  48
  49         xasprintf(&path, "/proc/%u/psinfo", (u_int) pgrp);
  50         f = open(path, O_RDONLY);
  51         free(path);
  52         if (f < 0)
  53                 return (NULL);
  54
  55         bytes = read(f, &p, sizeof(p));
  56         close(f);
  57         if (bytes != sizeof(p))
  58                 return (NULL);
  59
  60         if (p.pr_ttydev != st.st_rdev)
  61                 return (NULL);
  62
  63         return (xstrdup(p.pr_fname));
  64 }
  65
  66 char *
  67 osdep_get_cwd(int fd)
  68 {
  69         static char      target[MAXPATHLEN + 1];
  70         char            *path;
  71         const char      *ttypath;
  72         ssize_t          n;
  73         pid_t            pgrp;
  74         int              retval, ttyfd;
  75
  76         if ((ttypath = ptsname(fd)) == NULL)
  77                 return (NULL);
  78         if ((ttyfd = open(ttypath, O_RDONLY|O_NOCTTY)) == -1)
  79                 return (NULL);
  80
  81         retval = ioctl(ttyfd, TIOCGPGRP, &pgrp);
  82         close(ttyfd);
  83         if (retval == -1)
  84                 return (NULL);
  85
  86         xasprintf(&path, "/proc/%u/path/cwd", (u_int) pgrp);
  87         n = readlink(path, target, MAXPATHLEN);
  88         free(path);
  89         if (n > 0) {
  90                 target[n] = '\0';
  91                 return (target);
  92         }
  93         return (NULL);
  94 }
  95
  96 struct event_base *
  97 osdep_event_init(void)
  98 {
  99         struct event_base       *base;
 100
 101         /*
 102          * On Illumos, evports don't seem to work properly. It is not clear if
 103          * this a problem in libevent, with the way tmux uses file descriptors,
 104          * or with some types of file descriptor. But using poll instead is
 105          * fine.
 106          */
 107         setenv("EVENT_NOEVPORT", "1", 1);
 108
 109         base = event_init();
 110         unsetenv("EVENT_NOEVPORT");
 111         return (base);
 112 }