1#
2#  Copyright (c) 2016 Dell EMC Isilon
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29#
30# $FreeBSD$
31
32atf_test_case coredump_phnum cleanup
33coredump_phnum_head()
34{
35	atf_set "descr" "More than 65534 segments"
36	atf_set "require.config" "allow_sysctl_side_effects"
37	atf_set "require.progs" "readelf procstat"
38	atf_set "require.user" "root"
39}
40coredump_phnum_body()
41{
42	# Set up core dumping
43	atf_check -o save:coredump_phnum_restore_state sysctl -e \
44	    kern.coredump kern.corefile
45
46	ulimit -c unlimited
47	atf_check -o ignore sysctl kern.coredump=1
48	atf_check -o ignore sysctl kern.corefile=coredump_phnum_helper.core
49	atf_check -o save:cuc sysctl -n kern.compress_user_cores
50	read cuc < cuc
51
52	atf_check -s signal:sigabrt "$(atf_get_srcdir)/coredump_phnum_helper"
53
54	case "$cuc" in
55	0)
56		unzip_status=0
57		;;
58	1)
59		gunzip coredump_phnum_helper.core.gz 2>unzip_stderr
60		unzip_status=$?
61		;;
62	2)
63		zstd -qd coredump_phnum_helper.core.zst 2>unzip_stderr
64		unzip_status=$?
65		;;
66	*)
67		atf_skip "unsupported kern.compress_user_cores=$cuc"
68		;;
69	esac
70
71	if [ $unzip_status -ne 0 ]; then
72		if grep -q 'No space left on device' unzip_stderr; then
73			atf_skip "file system full: $(df $PWD | tail -n 1)"
74		fi
75		atf_fail "unzip failed; status ${unzip_status}; " \
76			"stderr: $(cat unzip_stderr)"
77	fi
78
79	# Check that core looks good
80	if [ ! -f coredump_phnum_helper.core ]; then
81		atf_fail "Helper program did not dump core"
82	fi
83
84	# These magic numbers don't have any real significance.  They are just
85	# the result of running the helper program and dumping core.  The only
86	# important bit is that they're larger than 65535 (UINT16_MAX).
87	atf_check -o "match:65535 \(66[0-9]{3}\)" \
88	    -x 'readelf -h coredump_phnum_helper.core | grep "Number of program headers:"'
89	atf_check -o "match:There are 66[0-9]{3} program headers" \
90	    -x 'readelf -l coredump_phnum_helper.core | grep -1 "program headers"'
91	atf_check -o "match: 00000(0000000000)?1 .* 66[0-9]{3} " \
92	    -x 'readelf -S coredump_phnum_helper.core | grep -A1 "^  \[ 0\] "'
93
94	atf_check -o "match:66[0-9]{3}" \
95	    -x 'procstat -v coredump_phnum_helper.core | wc -l'
96}
97coredump_phnum_cleanup()
98{
99	rm -f coredump_phnum_helper.core
100	if [ -f coredump_phnum_restore_state ]; then
101		sysctl -f coredump_phnum_restore_state
102		rm -f coredump_phnum_restore_state
103	fi
104	rm -f cuc
105}
106
107atf_init_test_cases()
108{
109	atf_add_test_case coredump_phnum
110}
111