os161-1.99
 All Data Structures
bad_link.c
00001 /*
00002  * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
00003  *      The President and Fellows of Harvard College.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the University nor the names of its contributors
00014  *    may be used to endorse or promote products derived from this software
00015  *    without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
00018  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
00021  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00023  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00024  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00025  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00026  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00027  * SUCH DAMAGE.
00028  */
00029 
00030 /*
00031  * link
00032  */
00033 
00034 #include <unistd.h>
00035 #include <errno.h>
00036 
00037 #include "test.h"
00038 
00039 static
00040 void
00041 link_dir(void)
00042 {
00043         int rv;
00044         rv = link(".", TESTDIR);
00045         report_test(rv, errno, EINVAL, "hard link of .");
00046         if (rv==0) {
00047                 /* this might help recover... maybe */
00048                 remove(TESTDIR);
00049         }
00050 }
00051 
00052 static
00053 void
00054 link_empty1(void)
00055 {
00056         int rv;
00057         rv = link("", TESTDIR);
00058         report_test(rv, errno, EINVAL, "hard link of empty string");
00059 }
00060 
00061 static
00062 void
00063 link_empty2(void)
00064 {
00065         int rv;
00066         if (create_testdir()<0) {
00067                 return;
00068         }
00069         rv = link(TESTDIR, "");
00070         report_test(rv, errno, EINVAL, "hard link to empty string");
00071         rmdir(TESTDIR);
00072 }
00073 
00074 void
00075 test_link(void)
00076 {
00077         test_link_paths();
00078         link_dir();
00079         link_empty1();
00080         link_empty2();
00081 }
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