osdep-darwin.c

   1 /* $Id: osdep-darwin.c,v 1.11 2009-05-04 17:58:27 nicm Exp $ */
   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 #include <sys/sysctl.h>
  21
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <unistd.h>
  25
  26 char    *osdep_get_name(int, char *);
  27
  28 #define unused __attribute__ ((unused))
  29
  30 char *
  31 osdep_get_name(int fd, unused char *tty)
  32 {
  33         int     mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, 0 };
  34         size_t  size;
  35         struct kinfo_proc kp;
  36
  37         if ((mib[3] = tcgetpgrp(fd)) == -1)
  38                 return (NULL);
  39
  40         size = sizeof kp;
  41         if (sysctl(mib, 4, &kp, &size, NULL, 0) == -1)
  42                 return (NULL);
  43         if (*kp.kp_proc.p_comm == '\0')
  44                 return (NULL);
  45
  46         return (strdup(kp.kp_proc.p_comm));
  47 }