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      1 # $NetBSD: t_link.sh,v 1.7 2024/04/28 07:27:41 rillig Exp $
      2 #
      3 # Copyright (c) 2005, 2006, 2007, 2008 The NetBSD Foundation, Inc.
      4 # All rights reserved.
      5 #
      6 # Redistribution and use in source and binary forms, with or without
      7 # modification, are permitted provided that the following conditions
      8 # are met:
      9 # 1. Redistributions of source code must retain the above copyright
     10 #    notice, this list of conditions and the following disclaimer.
     11 # 2. Redistributions in binary form must reproduce the above copyright
     12 #    notice, this list of conditions and the following disclaimer in the
     13 #    documentation and/or other materials provided with the distribution.
     14 #
     15 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     16 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     17 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     18 # PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     19 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     20 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     21 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     22 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     23 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     24 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     25 # POSSIBILITY OF SUCH DAMAGE.
     26 #
     27 
     28 #
     29 # Verifies that the link operation works.
     30 #
     31 
     32 atf_test_case basic
     33 basic_head() {
     34 	atf_set "descr" "Verifies that the link operation works on files" \
     35 	                "at the top directory"
     36 	atf_set "require.user" "root"
     37 }
     38 basic_body() {
     39 	test_mount
     40 
     41 	atf_check -s exit:0 -o empty -e empty touch a
     42 	atf_check -s exit:0 -o empty -e empty touch z
     43 	eval $(stat -s a | sed -e 's|st_|sta_|g')
     44 	eval $(stat -s z | sed -e 's|st_|stz_|g')
     45 	test ${sta_ino} != ${stz_ino} || \
     46 	    atf_fail "Node numbers are not different"
     47 	test ${sta_nlink} -eq 1 || atf_fail "Number of links is incorrect"
     48 	atf_check -s exit:0 -o empty -e empty ln a b
     49 
     50 	echo "Checking if link count is correct after links are created"
     51 	eval $(stat -s a | sed -e 's|st_|sta_|g')
     52 	eval $(stat -s b | sed -e 's|st_|stb_|g')
     53 	test ${sta_ino} = ${stb_ino} || atf_fail "Node number changed"
     54 	test ${sta_nlink} -eq 2 || atf_fail "Link count is incorrect"
     55 	test ${stb_nlink} -eq 2 || atf_fail "Link count is incorrect"
     56 
     57 	echo "Checking if link count is correct after links are deleted"
     58 	atf_check -s exit:0 -o empty -e empty rm a
     59 	eval $(stat -s b | sed -e 's|st_|stb_|g')
     60 	test ${stb_nlink} -eq 1 || atf_fail "Link count is incorrect"
     61 	atf_check -s exit:0 -o empty -e empty rm b
     62 
     63 	test_unmount
     64 }
     65 
     66 atf_test_case subdirs
     67 subdirs_head() {
     68 	atf_set "descr" "Verifies that the link operation works if used" \
     69 	                "in subdirectories"
     70 	atf_set "require.user" "root"
     71 }
     72 subdirs_body() {
     73 	test_mount
     74 
     75 	atf_check -s exit:0 -o empty -e empty touch a
     76 	atf_check -s exit:0 -o empty -e empty mkdir c
     77 	atf_check -s exit:0 -o empty -e empty ln a c/b
     78 
     79 	echo "Checking if link count is correct after links are created"
     80 	eval $(stat -s a | sed -e 's|st_|sta_|g')
     81 	eval $(stat -s c/b | sed -e 's|st_|stb_|g')
     82 	test ${sta_ino} = ${stb_ino} || atf_fail "Node number changed"
     83 	test ${sta_nlink} -eq 2 || atf_fail "Link count is incorrect"
     84 	test ${stb_nlink} -eq 2 || atf_fail "Link count is incorrect"
     85 
     86 	echo "Checking if link count is correct after links are deleted"
     87 	atf_check -s exit:0 -o empty -e empty rm a
     88 	eval $(stat -s c/b | sed -e 's|st_|stb_|g')
     89 	test ${stb_nlink} -eq 1 || atf_fail "Link count is incorrect"
     90 	atf_check -s exit:0 -o empty -e empty rm c/b
     91 	atf_check -s exit:0 -o empty -e empty rmdir c
     92 
     93 	test_unmount
     94 }
     95 
     96 atf_test_case kqueue
     97 kqueue_head() {
     98 	atf_set "descr" "Verifies that creating a link raises the correct" \
     99 	                "kqueue events"
    100 	atf_set "require.user" "root"
    101 }
    102 kqueue_body() {
    103 	test_mount
    104 
    105 	atf_check -s exit:0 -o empty -e empty mkdir dir
    106 	atf_check -s exit:0 -o empty -e empty touch dir/a
    107 	echo 'ln dir/a dir/b' | kqueue_monitor 2 dir dir/a
    108 	kqueue_check dir/a NOTE_LINK
    109 	kqueue_check dir NOTE_WRITE
    110 
    111 	echo 'rm dir/a' | kqueue_monitor 2 dir dir/b
    112 	kqueue_check dir/b NOTE_DELETE
    113 	kqueue_check dir NOTE_WRITE
    114 	atf_check -s exit:0 -o empty -e empty rm dir/b
    115 	atf_check -s exit:0 -o empty -e empty rmdir dir
    116 
    117 	test_unmount
    118 }
    119 
    120 atf_init_test_cases() {
    121 	. $(atf_get_srcdir)/../h_funcs.subr
    122 	. $(atf_get_srcdir)/h_funcs.subr
    123 
    124 	atf_add_test_case basic
    125 	atf_add_test_case subdirs
    126 	atf_add_test_case kqueue
    127 }
    128