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      1 /*	$NetBSD: t_symlinkat.c,v 1.2 2013/03/17 04:46:06 jmmv Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2012 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Emmanuel Dreyfus.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 #include <sys/cdefs.h>
     32 __RCSID("$NetBSD: t_symlinkat.c,v 1.2 2013/03/17 04:46:06 jmmv Exp $");
     33 
     34 #include <atf-c.h>
     35 #include <errno.h>
     36 #include <fcntl.h>
     37 #include <limits.h>
     38 #include <paths.h>
     39 #include <stdio.h>
     40 #include <string.h>
     41 #include <unistd.h>
     42 #include <sys/param.h>
     43 #include <sys/stat.h>
     44 
     45 #define ODIR "olddir"
     46 #define NDIR "newdir"
     47 #define FILE "olddir/old"
     48 #define BASEFILE "old"
     49 #define RELFILE "../olddir/old"
     50 #define LINK "newdir/symlink"
     51 #define BASELINK "symlink"
     52 #define FILEERR "olddir/olderr"
     53 
     54 ATF_TC(symlinkat_fd);
     55 ATF_TC_HEAD(symlinkat_fd, tc)
     56 {
     57 	atf_tc_set_md_var(tc, "descr", "See that symlinkat works with fd");
     58 }
     59 ATF_TC_BODY(symlinkat_fd, tc)
     60 {
     61 	int dfd, fd;
     62 	struct stat ost, nst;
     63 
     64 	ATF_REQUIRE(mkdir(ODIR, 0755) == 0);
     65 	ATF_REQUIRE(mkdir(NDIR, 0755) == 0);
     66 	ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
     67 	ATF_REQUIRE(close(fd) != -1);
     68 
     69 	ATF_REQUIRE((dfd = open(NDIR, O_RDONLY, 0)) != -1);
     70 	ATF_REQUIRE(symlinkat(RELFILE, dfd, BASELINK) == 0);
     71 	ATF_REQUIRE(close(dfd) == 0);
     72 
     73 	ATF_REQUIRE(stat(FILE, &ost) == 0);
     74 	ATF_REQUIRE(stat(LINK, &nst) == 0);
     75 	ATF_REQUIRE(ost.st_ino == nst.st_ino);
     76 }
     77 
     78 ATF_TC(symlinkat_fdcwd);
     79 ATF_TC_HEAD(symlinkat_fdcwd, tc)
     80 {
     81 	atf_tc_set_md_var(tc, "descr",
     82 			  "See that symlinkat works with fd as AT_FDCWD");
     83 }
     84 ATF_TC_BODY(symlinkat_fdcwd, tc)
     85 {
     86 	int fd;
     87 	struct stat ost, nst;
     88 
     89 	ATF_REQUIRE(mkdir(ODIR, 0755) == 0);
     90 	ATF_REQUIRE(mkdir(NDIR, 0755) == 0);
     91 	ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
     92 	ATF_REQUIRE(close(fd) != -1);
     93 
     94 	ATF_REQUIRE(symlinkat(RELFILE, AT_FDCWD, LINK) == 0);
     95 
     96 	ATF_REQUIRE(stat(FILE, &ost) == 0);
     97 	ATF_REQUIRE(stat(LINK, &nst) == 0);
     98 	ATF_REQUIRE(ost.st_ino == nst.st_ino);
     99 }
    100 
    101 ATF_TC(symlinkat_fdcwderr);
    102 ATF_TC_HEAD(symlinkat_fdcwderr, tc)
    103 {
    104 	atf_tc_set_md_var(tc, "descr",
    105 		  "See that symlinkat works with fd as AT_FDCWD and bad path");
    106 }
    107 ATF_TC_BODY(symlinkat_fdcwderr, tc)
    108 {
    109 	int fd;
    110 	struct stat st;
    111 
    112 	ATF_REQUIRE(mkdir(ODIR, 0755) == 0);
    113 	ATF_REQUIRE(mkdir(NDIR, 0755) == 0);
    114 	ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
    115 	ATF_REQUIRE(close(fd) != -1);
    116 
    117 	ATF_REQUIRE(symlinkat(FILEERR, AT_FDCWD, LINK) == 0);
    118 	ATF_REQUIRE(lstat(LINK, &st) == 0);
    119 	ATF_REQUIRE(stat(LINK, &st) == -1);
    120 	ATF_REQUIRE(errno == ENOENT);
    121 
    122 }
    123 
    124 ATF_TC(symlinkat_fderr);
    125 ATF_TC_HEAD(symlinkat_fderr, tc)
    126 {
    127 	atf_tc_set_md_var(tc, "descr", "See that symlinkat fails with fd as -1");
    128 }
    129 ATF_TC_BODY(symlinkat_fderr, tc)
    130 {
    131 	int fd;
    132 
    133 	ATF_REQUIRE(mkdir(ODIR, 0755) == 0);
    134 	ATF_REQUIRE(mkdir(NDIR, 0755) == 0);
    135 	ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
    136 	ATF_REQUIRE(close(fd) != -1);
    137 
    138 	ATF_REQUIRE(symlinkat(RELFILE, -1, LINK) == -1);
    139 }
    140 
    141 ATF_TP_ADD_TCS(tp)
    142 {
    143 
    144 	ATF_TP_ADD_TC(tp, symlinkat_fd);
    145 	ATF_TP_ADD_TC(tp, symlinkat_fdcwd);
    146 	ATF_TP_ADD_TC(tp, symlinkat_fdcwderr);
    147 	ATF_TP_ADD_TC(tp, symlinkat_fderr);
    148 
    149 	return atf_no_error();
    150 }
    151