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      1 /*
      2  * Copyright (c) 2000 Silicon Graphics, Inc.  All Rights Reserved.
      3  *  AUTHOR		: William Roske
      4  *  CO-PILOT		: Dave Fenner
      5  * Copyright (c) 2014 Cyril Hrubis <chrubis (at) suse.cz>
      6  *
      7  * This program is free software; you can redistribute it and/or modify it
      8  * under the terms of version 2 of the GNU General Public License as
      9  * published by the Free Software Foundation.
     10  *
     11  * This program is distributed in the hope that it would be useful, but
     12  * WITHOUT ANY WARRANTY; without even the implied warranty of
     13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
     14  *
     15  * Further, this software is distributed without any warranty that it is
     16  * free of the rightful claim of any third person regarding infringement
     17  * or the like.  Any license provided herein, whether implied or
     18  * otherwise, applies only to this software file.  Patent licenses, if
     19  * any, provided herein do not apply to combinations of this program with
     20  * other software, or any other product whatsoever.
     21  *
     22  * You should have received a copy of the GNU General Public License along
     23  * with this program; if not, write the Free Software Foundation, Inc.,
     24  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
     25  *
     26  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
     27  * Mountain View, CA  94043, or:
     28  *
     29  * http://www.sgi.com
     30  *
     31  * For further information regarding this notice, see:
     32  *
     33  * http://oss.sgi.com/projects/GenInfo/NoticeExplan/
     34  */
     35 
     36 /*
     37  * Tests that link(2) succeds.
     38  */
     39 
     40 #include <sys/types.h>
     41 #include <fcntl.h>
     42 #include <sys/stat.h>
     43 #include <errno.h>
     44 #include <string.h>
     45 #include <signal.h>
     46 #include "test.h"
     47 #include "safe_macros.h"
     48 
     49 static void setup(void);
     50 static void cleanup(void);
     51 
     52 char *TCID = "link02";
     53 int TST_TOTAL = 1;
     54 
     55 #define OLDPATH "oldpath"
     56 #define NEWPATH "newpath"
     57 
     58 static void verify_link(void)
     59 {
     60 	struct stat fbuf, lbuf;
     61 
     62 	TEST(link(OLDPATH, NEWPATH));
     63 
     64 	if (TEST_RETURN == 0) {
     65 		SAFE_STAT(cleanup, OLDPATH, &fbuf);
     66 		SAFE_STAT(cleanup, NEWPATH, &lbuf);
     67 		if (fbuf.st_nlink > 1 && lbuf.st_nlink > 1 &&
     68 		    fbuf.st_nlink == lbuf.st_nlink) {
     69 			tst_resm(TPASS, "link("OLDPATH","NEWPATH") "
     70 			         "returned 0 and link counts match");
     71 		} else {
     72 			tst_resm(TFAIL, "link("OLDPATH","NEWPATH") returned 0"
     73 				 " but stat lin count do not match %d %d",
     74 				 (int)fbuf.st_nlink, (int)lbuf.st_nlink);
     75 		}
     76 		SAFE_UNLINK(cleanup, NEWPATH);
     77 	} else {
     78 		tst_resm(TFAIL | TTERRNO,
     79 		         "link("OLDPATH","NEWPATH") returned %ld",
     80 		         TEST_RETURN);
     81 	}
     82 }
     83 
     84 int main(int ac, char **av)
     85 {
     86 	int lc;
     87 
     88 	tst_parse_opts(ac, av, NULL, NULL);
     89 
     90 	setup();
     91 
     92 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     93 		tst_count = 0;
     94 		verify_link();
     95 	}
     96 
     97 	cleanup();
     98 	tst_exit();
     99 }
    100 
    101 static void setup(void)
    102 {
    103 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
    104 
    105 	TEST_PAUSE;
    106 
    107 	tst_tmpdir();
    108 
    109 	SAFE_TOUCH(cleanup, OLDPATH, 0700, NULL);
    110 }
    111 
    112 static void cleanup(void)
    113 {
    114 	tst_rmdir();
    115 }
    116