b2b1603e17
In the case where write(2) does not return -1, it does not initialize errno. This can happen when a broken pipe causes a short write. I attempted to adapt the submitted test case to ATF but could not figure out how to make the test run in the ATF environment. So the aborted test is left disabled, in case someone would like to run it manually or fix it. PR: 221976 Submitted by: <martin AT lispworks.com> (earlier version) Sponsored by: Dell EMC Isilon
248 lines
6.6 KiB
Bash
Executable File
248 lines
6.6 KiB
Bash
Executable File
# Copyright (c) 2016 Alan Somers
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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atf_test_case empty_r
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empty_r_head()
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{
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atf_set "descr" "Reverse an empty file"
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}
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empty_r_body()
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{
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touch infile expectfile
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tail -r infile > outfile
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tail -r < infile > outpipe
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atf_check cmp expectfile outfile
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atf_check cmp expectfile outpipe
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}
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atf_test_case file_r
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file_r_head()
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{
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atf_set "descr" "Reverse a file"
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}
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file_r_body()
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{
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cat > infile <<HERE
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This is the first line
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This is the second line
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This is the third line
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HERE
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cat > expectfile << HERE
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This is the third line
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This is the second line
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This is the first line
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HERE
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tail -r infile > outfile
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tail -r < infile > outpipe
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atf_check cmp expectfile outfile
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atf_check cmp expectfile outpipe
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}
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atf_test_case file_rn2
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file_rn2_head()
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{
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atf_set "descr" "Reverse the last two lines of a file"
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}
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file_rn2_body()
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{
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cat > infile <<HERE
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This is the first line
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This is the second line
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This is the third line
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HERE
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cat > expectfile << HERE
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This is the third line
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This is the second line
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HERE
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tail -rn2 infile > outfile
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tail -rn2 < infile > outpipe
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atf_check cmp expectfile outfile
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atf_check cmp expectfile outpipe
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}
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atf_test_case file_rc28
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file_rc28_head()
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{
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atf_set "descr" "Reverse a file and display the last 28 characters"
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}
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file_rc28_body()
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{
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cat > infile <<HERE
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This is the first line
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This is the second line
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This is the third line
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HERE
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cat > expectfile << HERE
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This is the third line
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line
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HERE
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tail -rc28 infile > outfile
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tail -rc28 < infile > outpipe
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atf_check cmp expectfile outfile
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atf_check cmp expectfile outpipe
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}
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atf_test_case longfile_r
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longfile_r_head()
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{
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atf_set "descr" "Reverse a long file"
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}
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longfile_r_body()
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{
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jot -w "%0511d" 1030 0 > infile
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jot -w "%0511d" 1030 1029 0 -1 > expectfile
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tail -r infile > outfile
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tail -r < infile > outpipe
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atf_check cmp expectfile outfile
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atf_check cmp expectfile outpipe
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}
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atf_test_case longfile_r_enomem
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longfile_r_enomem_head()
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{
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atf_set "descr" "Reverse a file that's too long to store in RAM"
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}
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longfile_r_enomem_body()
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{
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# When we reverse a file that's too long for RAM, tail should drop the
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# first part and just print what it can. We'll check that the last
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# part is ok
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{
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ulimit -v 32768 || atf_skip "Can't adjust ulimit"
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jot -w "%01023d" 32768 0 | tail -r > outfile ;
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}
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if [ "$?" -ne 1 ]; then
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atf_skip "Didn't get ENOMEM. Adjust test parameters"
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fi
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# We don't know how much of the input we dropped. So just check that
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# the first ten lines of tail's output are the same as the last ten of
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# the input
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jot -w "%01023d" 10 32767 0 -1 > expectfile
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head -n 10 outfile > outtrunc
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diff expectfile outtrunc
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atf_check cmp expectfile outtrunc
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}
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atf_test_case longfile_r_longlines
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longfile_r_longlines_head()
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{
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atf_set "descr" "Reverse a long file with extremely long lines"
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}
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longfile_r_longlines_body()
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{
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jot -s " " -w "%07d" 18000 0 > infile
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jot -s " " -w "%07d" 18000 18000 >> infile
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jot -s " " -w "%07d" 18000 36000 >> infile
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jot -s " " -w "%07d" 18000 36000 > expectfile
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jot -s " " -w "%07d" 18000 18000 >> expectfile
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jot -s " " -w "%07d" 18000 0 >> expectfile
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tail -r infile > outfile
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tail -r < infile > outpipe
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atf_check cmp expectfile outfile
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atf_check cmp expectfile outpipe
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}
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atf_test_case longfile_rc135782
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longfile_rc135782_head()
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{
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atf_set "descr" "Reverse a long file and print the last 135,782 bytes"
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}
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longfile_rc135782_body()
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{
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jot -w "%063d" 9000 0 > infile
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jot -w "%063d" 2121 8999 0 -1 > expectfile
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echo "0000000000000000000000000000000006878" >> expectfile
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tail -rc135782 infile > outfile
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tail -rc135782 < infile > outpipe
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atf_check cmp expectfile outfile
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atf_check cmp expectfile outpipe
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}
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atf_test_case longfile_rc145782_longlines
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longfile_rc145782_longlines_head()
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{
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atf_set "descr" "Reverse a long file with extremely long lines and print the last 145,782 bytes"
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}
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longfile_rc145782_longlines_body()
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{
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jot -s " " -w "%07d" 18000 0 > infile
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jot -s " " -w "%07d" 18000 18000 >> infile
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jot -s " " -w "%07d" 18000 36000 >> infile
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jot -s " " -w "%07d" 18000 36000 > expectfile
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echo -n "35777 " >> expectfile
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jot -s " " -w "%07d" 222 35778 >> expectfile
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tail -rc145782 infile > outfile
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tail -rc145782 < infile > outpipe
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atf_check cmp expectfile outfile
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atf_check cmp expectfile outpipe
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}
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atf_test_case longfile_rn2500
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longfile_rn2500_head()
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{
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atf_set "descr" "Reverse a long file and print the last 2,500 lines"
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}
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longfile_rn2500_body()
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{
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jot -w "%063d" 9000 0 > infile
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jot -w "%063d" 2500 8999 0 -1 > expectfile
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tail -rn2500 infile > outfile
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tail -rn2500 < infile > outpipe
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atf_check cmp expectfile outfile
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atf_check cmp expectfile outpipe
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}
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atf_test_case broken_pipe
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broken_pipe_head()
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{
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atf_set "descr" "Do not print bogus errno based output on short writes"
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}
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broken_pipe_body()
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{
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atf_expect_fail "Can't seem to get testcase to work in test environment. Reproduces easily in interactive shell."
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seq -f '%128g' 1 1000 > ints
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atf_check -s exit:1 -o ignore -e "inline:tail: stdout" tail -n 856 ints | awk '{ exit }'
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}
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atf_init_test_cases()
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{
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atf_add_test_case empty_r
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atf_add_test_case file_r
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atf_add_test_case file_rc28
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atf_add_test_case file_rn2
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# The longfile tests are designed to exercise behavior in r_buf(),
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# which operates on 128KB blocks
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atf_add_test_case longfile_r
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atf_add_test_case longfile_r_enomem
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atf_add_test_case longfile_r_longlines
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atf_add_test_case longfile_rc135782
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atf_add_test_case longfile_rc145782_longlines
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atf_add_test_case longfile_rn2500
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#atf_add_test_case broken_pipe
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}
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