10Sstevel@tonic-gate /*
20Sstevel@tonic-gate * CDDL HEADER START
30Sstevel@tonic-gate *
40Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*2712Snn35248 * Common Development and Distribution License (the "License").
6*2712Snn35248 * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate *
80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate * See the License for the specific language governing permissions
110Sstevel@tonic-gate * and limitations under the License.
120Sstevel@tonic-gate *
130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate *
190Sstevel@tonic-gate * CDDL HEADER END
200Sstevel@tonic-gate */
210Sstevel@tonic-gate /*
22*2712Snn35248 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
230Sstevel@tonic-gate * Use is subject to license terms.
240Sstevel@tonic-gate */
250Sstevel@tonic-gate
260Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
270Sstevel@tonic-gate
280Sstevel@tonic-gate #include <string.h>
290Sstevel@tonic-gate #include <limits.h>
300Sstevel@tonic-gate #include <sys/types.h>
310Sstevel@tonic-gate #include <sys/stat.h>
320Sstevel@tonic-gate #include "Pcontrol.h"
330Sstevel@tonic-gate
340Sstevel@tonic-gate /*
350Sstevel@tonic-gate * Return TRUE iff dir is the /proc directory.
360Sstevel@tonic-gate */
370Sstevel@tonic-gate int
Pisprocdir(struct ps_prochandle * Pr,const char * dir)380Sstevel@tonic-gate Pisprocdir(struct ps_prochandle *Pr, const char *dir)
390Sstevel@tonic-gate {
400Sstevel@tonic-gate char path[PATH_MAX];
410Sstevel@tonic-gate struct stat statb;
420Sstevel@tonic-gate struct statvfs statvfsb;
430Sstevel@tonic-gate
440Sstevel@tonic-gate if (*dir == '/')
45*2712Snn35248 (void) snprintf(path, sizeof (path), "%s/%d/root%s",
46*2712Snn35248 procfs_path, (int)Pr->pid, dir);
470Sstevel@tonic-gate else
48*2712Snn35248 (void) snprintf(path, sizeof (path), "%s/%d/cwd/%s",
49*2712Snn35248 procfs_path, (int)Pr->pid, dir);
500Sstevel@tonic-gate
510Sstevel@tonic-gate /*
520Sstevel@tonic-gate * We can't compare the statb.st_fstype string to "proc" because
530Sstevel@tonic-gate * a loop-back mount of /proc would show "lofs" instead of "proc".
540Sstevel@tonic-gate * Instead we use the statvfs() f_basetype string.
550Sstevel@tonic-gate */
560Sstevel@tonic-gate return (stat(path, &statb) == 0 &&
570Sstevel@tonic-gate statvfs(path, &statvfsb) == 0 &&
580Sstevel@tonic-gate (statb.st_mode & S_IFMT) == S_IFDIR &&
590Sstevel@tonic-gate statb.st_ino == 2 &&
600Sstevel@tonic-gate strcmp(statvfsb.f_basetype, "proc") == 0);
610Sstevel@tonic-gate }
62