external/bsd/tmux/dist/osdep-darwin.c

   1 /* Id */
   2
   3 /*
   4  * Copyright (c) 2009 Joshua Elsasser <josh@elsasser.org>
   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/types.h>
  20
  21 #include <event.h>
  22 #include <libproc.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26
  27 char                    *osdep_get_name(int, char *);
  28 char                    *osdep_get_cwd(int);
  29 struct event_base       *osdep_event_init(void);
  30
  31 #define unused __attribute__ ((unused))
  32
  33 char *
  34 osdep_get_name(int fd, unused char *tty)
  35 {
  36         struct proc_bsdinfo             bsdinfo;
  37         pid_t                           pgrp;
  38         int                             ret;
  39
  40         if ((pgrp = tcgetpgrp(fd)) == -1)
  41                 return (NULL);
  42
  43         ret = proc_pidinfo(pgrp, PROC_PIDTBSDINFO, 0,
  44             &bsdinfo, sizeof bsdinfo);
  45         if (ret == sizeof bsdinfo && *bsdinfo.pbi_comm != '\0')
  46                 return (strdup(bsdinfo.pbi_comm));
  47         return (NULL);
  48 }
  49
  50 char *
  51 osdep_get_cwd(int fd)
  52 {
  53         static char                     wd[PATH_MAX];
  54         struct proc_vnodepathinfo       pathinfo;
  55         pid_t                           pgrp;
  56         int                             ret;
  57
  58         if ((pgrp = tcgetpgrp(fd)) == -1)
  59                 return (NULL);
  60
  61         ret = proc_pidinfo(pgrp, PROC_PIDVNODEPATHINFO, 0,
  62             &pathinfo, sizeof pathinfo);
  63         if (ret == sizeof pathinfo) {
  64                 strlcpy(wd, pathinfo.pvi_cdir.vip_path, sizeof wd);
  65                 return (wd);
  66         }
  67         return (NULL);
  68 }
  69
  70 struct event_base *
  71 osdep_event_init(void)
  72 {
  73         /*
  74          * On OS X, kqueue and poll are both completely broken and don't
  75          * work on anything except socket file descriptors (yes, really).
  76          */
  77         setenv("EVENT_NOKQUEUE", "1", 1);
  78         setenv("EVENT_NOPOLL", "1", 1);
  79         return (event_init());
  80 }