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      1 /*	$NetBSD: t_faccessat.c,v 1.5 2024/07/07 14:29:48 christos 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_faccessat.c,v 1.5 2024/07/07 14:29:48 christos Exp $");
     33 
     34 #include <sys/param.h>
     35 #include <sys/stat.h>
     36 #include <atf-c.h>
     37 #include <errno.h>
     38 #include <fcntl.h>
     39 #include <limits.h>
     40 #include <paths.h>
     41 #include <stdio.h>
     42 #include <string.h>
     43 #include <unistd.h>
     44 
     45 #define DIR "dir"
     46 #define FILE "dir/faccessat"
     47 #define BASEFILE "faccessat"
     48 #define LINK "dir/symlink"
     49 #define BASELINK "symlink"
     50 #define FILEERR "dir/faccessaterr"
     51 
     52 ATF_TC(faccessat_fd);
     53 ATF_TC_HEAD(faccessat_fd, tc)
     54 {
     55 	atf_tc_set_md_var(tc, "descr", "See that faccessat works with fd");
     56 }
     57 ATF_TC_BODY(faccessat_fd, tc)
     58 {
     59 	int dfd;
     60 	int fd;
     61 
     62 	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
     63 	ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
     64 	ATF_REQUIRE(close(fd) == 0);
     65 
     66 	ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
     67 	ATF_REQUIRE(faccessat(dfd, BASEFILE, F_OK, 0) == 0);
     68 	ATF_REQUIRE(close(dfd) == 0);
     69 }
     70 
     71 ATF_TC(faccessat_fdcwd);
     72 ATF_TC_HEAD(faccessat_fdcwd, tc)
     73 {
     74 	atf_tc_set_md_var(tc, "descr",
     75 	    "See that faccessat works with fd as AT_FDCWD");
     76 }
     77 ATF_TC_BODY(faccessat_fdcwd, tc)
     78 {
     79 	int fd;
     80 
     81 	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
     82 	ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
     83 	ATF_REQUIRE(close(fd) == 0);
     84 
     85 	ATF_REQUIRE(chdir(DIR) == 0);
     86 	ATF_REQUIRE(faccessat(AT_FDCWD, BASEFILE, F_OK, 0) == 0);
     87 }
     88 
     89 ATF_TC(faccessat_fdcwderr);
     90 ATF_TC_HEAD(faccessat_fdcwderr, tc)
     91 {
     92 	atf_tc_set_md_var(tc, "descr",
     93 	    "See that faccessat fails with fd as AT_FDCWD and bad path");
     94 }
     95 ATF_TC_BODY(faccessat_fdcwderr, tc)
     96 {
     97 	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
     98 	ATF_REQUIRE(faccessat(AT_FDCWD, FILEERR, F_OK, 0) == -1);
     99 }
    100 
    101 ATF_TC(faccessat_fderr1);
    102 ATF_TC_HEAD(faccessat_fderr1, tc)
    103 {
    104 	atf_tc_set_md_var(tc, "descr", "See that faccessat fail with bad path");
    105 }
    106 ATF_TC_BODY(faccessat_fderr1, tc)
    107 {
    108 	int dfd;
    109 
    110 	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
    111 	ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
    112 	ATF_REQUIRE(faccessat(dfd, FILEERR, F_OK, 0) == -1);
    113 	ATF_REQUIRE(close(dfd) == 0);
    114 }
    115 
    116 ATF_TC(faccessat_fderr2);
    117 ATF_TC_HEAD(faccessat_fderr2, tc)
    118 {
    119 	atf_tc_set_md_var(tc, "descr", "See that faccessat fails with bad fdat");
    120 }
    121 ATF_TC_BODY(faccessat_fderr2, tc)
    122 {
    123 	int dfd;
    124 	int fd;
    125 	char cwd[MAXPATHLEN];
    126 
    127 	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
    128 	ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
    129 	ATF_REQUIRE(close(fd) == 0);
    130 
    131 	ATF_REQUIRE((dfd = open(getcwd(cwd, MAXPATHLEN), O_RDONLY, 0)) != -1);
    132 	ATF_REQUIRE(faccessat(dfd, BASEFILE, F_OK, 0) == -1);
    133 	ATF_REQUIRE(close(dfd) == 0);
    134 }
    135 
    136 ATF_TC(faccessat_fderr3);
    137 ATF_TC_HEAD(faccessat_fderr3, tc)
    138 {
    139 	atf_tc_set_md_var(tc, "descr", "See that faccessat fails with fd as -1");
    140 }
    141 ATF_TC_BODY(faccessat_fderr3, tc)
    142 {
    143 	int fd;
    144 
    145 	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
    146 	ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
    147 	ATF_REQUIRE(close(fd) == 0);
    148 
    149 	ATF_REQUIRE(faccessat(-1, FILE, F_OK, 0) == -1);
    150 }
    151 
    152 ATF_TC(faccessat_fdlink);
    153 ATF_TC_HEAD(faccessat_fdlink, tc)
    154 {
    155 	atf_tc_set_md_var(tc, "descr", "See that faccessat works on symlink");
    156 }
    157 ATF_TC_BODY(faccessat_fdlink, tc)
    158 {
    159 	int dfd;
    160 
    161 	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
    162 	ATF_REQUIRE(symlink(FILE, LINK) == 0); /* NB: FILE does not exists */
    163 
    164 	ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
    165 
    166 	ATF_REQUIRE(faccessat(dfd, BASELINK, F_OK, 0) == -1);
    167 	ATF_REQUIRE(errno == ENOENT);
    168 
    169 	ATF_REQUIRE(faccessat(dfd, BASELINK, F_OK, AT_SYMLINK_NOFOLLOW) == 0);
    170 
    171 	ATF_REQUIRE(close(dfd) == 0);
    172 }
    173 
    174 ATF_TC(faccessat_abs);
    175 ATF_TC_HEAD(faccessat_abs, tc)
    176 {
    177 	atf_tc_set_md_var(tc, "descr", "See that faccessat works with invalid "
    178 	    "fd when absolute path is provided.");
    179 }
    180 ATF_TC_BODY(faccessat_abs, tc)
    181 {
    182 	int fd;
    183 	char cwd[MAXPATHLEN];
    184 	char abs_path[MAXPATHLEN * 2];
    185 
    186 	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
    187 	ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
    188 	ATF_REQUIRE(close(fd) == 0);
    189 
    190 	ATF_REQUIRE(getcwd(cwd, MAXPATHLEN));
    191 	snprintf(abs_path, sizeof(abs_path), "%s/%s", cwd, FILE);
    192 	ATF_REQUIRE(faccessat(-1, abs_path, W_OK, 0) == 0);
    193 
    194 }
    195 
    196 ATF_TC(faccessat_abs_fddir);
    197 ATF_TC_HEAD(faccessat_abs_fddir, tc)
    198 {
    199 	atf_tc_set_md_var(tc, "descr", "See that faccessat works with "
    200 	    "fd of directory when absolute path is provided.");
    201 }
    202 ATF_TC_BODY(faccessat_abs_fddir, tc)
    203 {
    204 	int dfd;
    205 	char cwd[MAXPATHLEN];
    206 	char abs_path[MAXPATHLEN * 2];
    207 
    208 	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
    209 	ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
    210 	ATF_REQUIRE(close(dfd) == 0);
    211 
    212 	ATF_REQUIRE(getcwd(cwd, MAXPATHLEN));
    213 	snprintf(abs_path, sizeof(abs_path), "%s/%s", cwd, DIR);
    214 	ATF_REQUIRE(faccessat(dfd, abs_path, W_OK, 0) == 0);
    215 
    216 }
    217 
    218 ATF_TC(faccessat_abs_fdcwd);
    219 ATF_TC_HEAD(faccessat_abs_fdcwd, tc)
    220 {
    221 	atf_tc_set_md_var(tc, "descr", "See that faccessat works with fd "
    222 	    "of current directory when absolute path is provided.");
    223 }
    224 ATF_TC_BODY(faccessat_abs_fdcwd, tc)
    225 {
    226 	char cwd[MAXPATHLEN];
    227 	char abs_path[MAXPATHLEN * 2];
    228 
    229 	ATF_REQUIRE(mkdir(DIR, 0755) == 0);
    230 
    231 	ATF_REQUIRE(getcwd(cwd, MAXPATHLEN));
    232 	snprintf(abs_path, sizeof(abs_path), "%s/%s", cwd, DIR);
    233 	ATF_REQUIRE(faccessat(AT_FDCWD, abs_path, W_OK, 0) == 0);
    234 }
    235 
    236 ATF_TP_ADD_TCS(tp)
    237 {
    238 
    239 	ATF_TP_ADD_TC(tp, faccessat_fd);
    240 	ATF_TP_ADD_TC(tp, faccessat_fdcwd);
    241 	ATF_TP_ADD_TC(tp, faccessat_fdcwderr);
    242 	ATF_TP_ADD_TC(tp, faccessat_fderr1);
    243 	ATF_TP_ADD_TC(tp, faccessat_fderr2);
    244 	ATF_TP_ADD_TC(tp, faccessat_fderr3);
    245 	ATF_TP_ADD_TC(tp, faccessat_fdlink);
    246 	ATF_TP_ADD_TC(tp, faccessat_abs);
    247 	ATF_TP_ADD_TC(tp, faccessat_abs_fddir);
    248 	ATF_TP_ADD_TC(tp, faccessat_abs_fdcwd);
    249 
    250 	return atf_no_error();
    251 }
    252