1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  * Copyright (c) 2014, Joyent, Inc.  All rights reserved.
  26  */
  27 
  28 #include <stdio.h>
  29 #include <unistd.h>
  30 #include <string.h>
  31 #include <errno.h>
  32 #include <libproc.h>
  33 #include <sys/param.h>
  34 
  35 #include "ptools_common.h"
  36 
  37 static char *command;
  38 
  39 static int
  40 show_cwd(const char *arg)
  41 {
  42         char cwd[MAXPATHLEN], proc[128];
  43         psinfo_t p;
  44         int gcode;
  45         int ret;
  46 
  47         if (proc_arg_psinfo(arg, PR_ARG_PIDS, &p, &gcode) == -1) {
  48                 (void) fprintf(stderr, "%s: cannot examine %s: %s\n",
  49                     command, arg, Pgrab_error(gcode));
  50                 return (1);
  51         }
  52 
  53         (void) proc_snprintf(proc, sizeof (proc), "/proc/%d/path/cwd",
  54             (int)p.pr_pid);
  55 
  56         if ((ret = readlink(proc, cwd, sizeof (cwd) - 1)) <= 0) {
  57                 (void) fprintf(stderr, "%s: cannot resolve cwd for %s: %s\n",
  58                     command, arg, strerror(errno));
  59                 return (1);
  60         }
  61 
  62         cwd[ret] = '\0';
  63 
  64         (void) printf("%d:\t%s\n", (int)p.pr_pid, cwd);
  65         return (0);
  66 }
  67 
  68 int
  69 main(int argc, char **argv)
  70 {
  71         int retc = 0;
  72 
  73         if ((command = strrchr(argv[0], '/')) != NULL)
  74                 command++;
  75         else
  76                 command = argv[0];
  77 
  78         if (argc <= 1) {
  79                 (void) fprintf(stderr, "usage:\t%s pid ...\n", command);
  80                 (void) fprintf(stderr, "  (show process working directory)\n");
  81         }
  82 
  83         while (--argc >= 1)
  84                 retc += show_cwd(*++argv);
  85 
  86         return (retc);
  87 }