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Commit | Line | Data |
---|---|---|
24fe831c KC |
1 | #!/bin/sh |
2 | ||
9308f2f9 LR |
3 | SYSCTL="/proc/sys/debug/test_sysctl/" |
4 | TARGET="${SYSCTL}/string_0001" | |
24fe831c KC |
5 | ORIG=$(cat "${TARGET}") |
6 | TEST_STR="Testing sysctl" | |
7 | ||
8 | . ./common_tests | |
9 | ||
10 | # Only string sysctls support seeking/appending. | |
11 | MAXLEN=65 | |
12 | ||
13 | echo -n "Writing entire sysctl in short writes ... " | |
14 | set_orig | |
15 | dd if="${TEST_FILE}" of="${TARGET}" bs=1 2>/dev/null | |
16 | if ! verify "${TARGET}"; then | |
17 | echo "FAIL" >&2 | |
18 | rc=1 | |
19 | else | |
20 | echo "ok" | |
21 | fi | |
22 | ||
23 | echo -n "Writing middle of sysctl after unsynchronized seek ... " | |
24 | set_test | |
25 | dd if="${TEST_FILE}" of="${TARGET}" bs=1 seek=1 2>/dev/null | |
26 | if verify "${TARGET}"; then | |
27 | echo "FAIL" >&2 | |
28 | rc=1 | |
29 | else | |
30 | echo "ok" | |
31 | fi | |
32 | ||
33 | echo -n "Checking sysctl maxlen is at least $MAXLEN ... " | |
34 | set_orig | |
35 | perl -e 'print "A" x ('"${MAXLEN}"'-2), "B";' | \ | |
36 | dd of="${TARGET}" bs="${MAXLEN}" 2>/dev/null | |
37 | if ! grep -q B "${TARGET}"; then | |
38 | echo "FAIL" >&2 | |
39 | rc=1 | |
40 | else | |
41 | echo "ok" | |
42 | fi | |
43 | ||
44 | echo -n "Checking sysctl keeps original string on overflow append ... " | |
45 | set_orig | |
46 | perl -e 'print "A" x ('"${MAXLEN}"'-1), "B";' | \ | |
47 | dd of="${TARGET}" bs=$(( MAXLEN - 1 )) 2>/dev/null | |
48 | if grep -q B "${TARGET}"; then | |
49 | echo "FAIL" >&2 | |
50 | rc=1 | |
51 | else | |
52 | echo "ok" | |
53 | fi | |
54 | ||
55 | echo -n "Checking sysctl stays NULL terminated on write ... " | |
56 | set_orig | |
57 | perl -e 'print "A" x ('"${MAXLEN}"'-1), "B";' | \ | |
58 | dd of="${TARGET}" bs="${MAXLEN}" 2>/dev/null | |
59 | if grep -q B "${TARGET}"; then | |
60 | echo "FAIL" >&2 | |
61 | rc=1 | |
62 | else | |
63 | echo "ok" | |
64 | fi | |
65 | ||
66 | echo -n "Checking sysctl stays NULL terminated on overwrite ... " | |
67 | set_orig | |
68 | perl -e 'print "A" x ('"${MAXLEN}"'-1), "BB";' | \ | |
69 | dd of="${TARGET}" bs=$(( $MAXLEN + 1 )) 2>/dev/null | |
70 | if grep -q B "${TARGET}"; then | |
71 | echo "FAIL" >&2 | |
72 | rc=1 | |
73 | else | |
74 | echo "ok" | |
75 | fi | |
76 | ||
d644437a | 77 | exit_test |