osdep-aix.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2011 Nicholas Marriott <nicholas.marriott@gmail.com>
   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/procfs.h>
  21
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <fcntl.h>
  25
  26 #include "tmux.h"
  27
  28 char *
  29 osdep_get_name(__unused int fd, char *tty)
  30 {
  31         struct psinfo    p;
  32         char            *path;
  33         ssize_t          bytes;
  34         int              f, ttyfd, retval;
  35         pid_t            pgrp;
  36
  37         if ((ttyfd = open(tty, O_RDONLY|O_NOCTTY)) == -1)
  38                 return (NULL);
  39
  40         retval = ioctl(ttyfd, TIOCGPGRP, &pgrp);
  41         close(ttyfd);
  42         if (retval == -1)
  43                 return (NULL);
  44
  45         xasprintf(&path, "/proc/%u/psinfo", (u_int) pgrp);
  46         f = open(path, O_RDONLY);
  47         free(path);
  48         if (f < 0)
  49                 return (NULL);
  50
  51         bytes = read(f, &p, sizeof(p));
  52         close(f);
  53         if (bytes != sizeof(p))
  54                 return (NULL);
  55
  56         return (xstrdup(p.pr_fname));
  57 }
  58
  59 char *
  60 osdep_get_cwd(int fd)
  61 {
  62         static char      target[MAXPATHLEN + 1];
  63         char            *path;
  64         const char      *ttypath;
  65         ssize_t          n;
  66         pid_t            pgrp;
  67         int              len, retval, ttyfd;
  68
  69         if ((ttypath = ptsname(fd)) == NULL)
  70                 return (NULL);
  71         if ((ttyfd = open(ttypath, O_RDONLY|O_NOCTTY)) == -1)
  72                 return (NULL);
  73
  74         retval = ioctl(ttyfd, TIOCGPGRP, &pgrp);
  75         close(ttyfd);
  76         if (retval == -1)
  77                 return (NULL);
  78
  79         xasprintf(&path, "/proc/%u/cwd", (u_int) pgrp);
  80         n = readlink(path, target, MAXPATHLEN);
  81         free(path);
  82         if (n > 0) {
  83                 target[n] = '\0';
  84                 if ((len = strlen(target)) > 1 && target[len - 1] == '/')
  85                         target[len - 1] = '\0';
  86                 return (target);
  87         }
  88         return (NULL);
  89 }
  90
  91 struct event_base *
  92 osdep_event_init(void)
  93 {
  94         return (event_init());
  95 }