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      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  */
     26 
     27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     28 
     29 #include <stdio.h>
     30 #include <unistd.h>
     31 #include <string.h>
     32 #include <errno.h>
     33 #include <libproc.h>
     34 #include <sys/param.h>
     35 
     36 static char *command;
     37 
     38 static int
     39 show_cwd(const char *arg)
     40 {
     41 	char cwd[MAXPATHLEN], proc[128];
     42 	psinfo_t p;
     43 	int gcode;
     44 	int ret;
     45 
     46 	if (proc_arg_psinfo(arg, PR_ARG_PIDS, &p, &gcode) == -1) {
     47 		(void) fprintf(stderr, "%s: cannot examine %s: %s\n",
     48 		    command, arg, Pgrab_error(gcode));
     49 		return (1);
     50 	}
     51 
     52 	(void) snprintf(proc, sizeof (proc), "/proc/%d/path/cwd",
     53 	    (int)p.pr_pid);
     54 
     55 	if ((ret = readlink(proc, cwd, sizeof (cwd) - 1)) <= 0) {
     56 		(void) fprintf(stderr, "%s: cannot resolve cwd for %s: %s\n",
     57 		    command, arg, strerror(errno));
     58 		return (1);
     59 	}
     60 
     61 	cwd[ret] = '\0';
     62 
     63 	(void) printf("%d:\t%s\n", (int)p.pr_pid, cwd);
     64 	return (0);
     65 }
     66 
     67 int
     68 main(int argc, char **argv)
     69 {
     70 	int retc = 0;
     71 
     72 	if ((command = strrchr(argv[0], '/')) != NULL)
     73 		command++;
     74 	else
     75 		command = argv[0];
     76 
     77 	if (argc <= 1) {
     78 		(void) fprintf(stderr, "usage:\t%s pid ...\n", command);
     79 		(void) fprintf(stderr, "  (show process working directory)\n");
     80 	}
     81 
     82 	while (--argc >= 1)
     83 		retc += show_cwd(*++argv);
     84 
     85 	return (retc);
     86 }
     87