4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
27 * This file is part of Lustre, http://www.lustre.org/
28 * Lustre is a trademark of Sun Microsystems, Inc.
38 #include <sys/types.h>
45 int main(int argc, char **argv)
47 char *dname1, *dname2;
48 int fddev1, fddev2, rc;
52 if (argc < 2 || argc > 3) {
53 fprintf(stderr, "usage: %s filename1 [filename2]\n", argv[0]);
63 //create the special file (right now only test on pipe)
64 fprintf(stderr, "creating special file %s\n", dname1);
65 rc = mknod(dname1, 0777|S_IFIFO, 0);
67 fprintf(stderr, "creating %s fails: %s\n",
68 dname1, strerror(errno));
72 // open the special file again
73 fprintf(stderr, "opening file\n");
74 fddev1 = open(dname1, O_RDONLY | O_NONBLOCK);
76 fprintf(stderr, "open %s fails: %s\n",
77 dname1, strerror(errno));
81 // doesn't matter if the two dirs are the same??
82 fddev2 = open(dname2, O_RDONLY | O_NONBLOCK);
84 fprintf(stderr, "open %s fails: %s\n",
85 dname2, strerror(errno));
89 // delete the special file
90 fprintf (stderr, "unlinking %s\n", dname1);
93 fprintf(stderr, "unlink %s error: %s\n",
94 dname1, strerror(errno));
98 if (access(dname2, F_OK) == 0) {
99 fprintf(stderr, "%s still exists\n", dname2);
103 if (access(dname1, F_OK) == 0) {
104 fprintf(stderr, "%s still exists\n", dname1);
108 // fchmod one special file
109 rc = fchmod (fddev1, 0777);
111 fprintf(stderr, "fchmod unlinked special file %s fails: %s\n",
112 dname1, strerror(errno));
116 // fstat two files to check if they are the same
117 rc = fstat(fddev1, &st1);
119 fprintf(stderr, "fstat unlinked special file %s fails: %s\n",
120 dname1, strerror(errno));
124 rc = fstat(fddev2, &st2);
126 fprintf(stderr, "fstat file %s fails: %s\n",
127 dname2, strerror(errno));
131 fprintf(stderr, "Ok, everything goes well.\n");