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/*
* set_kernel.stp
*
* Check that the set_kernel_* functions work correctly.
*/
probe begin { println("systemtap starting probe") }
probe end { println("systemtap ending probe") }
global errors = 0
function assert_string(test, expected, value)
{
if (value == expected)
return 1
printf("systemtap test failure - %s: expected \"%s\", got \"%s\"\n",
test, expected, value)
errors++
return 0
}
function assert_number(test, expected, value)
{
if (value == expected)
return 1
printf("systemtap test failure - %s: expected %#x, got %#x\n",
test, expected, value)
errors++
return 0
}
function assert_not_reached(test)
{
printf("systemtap test failure - %s: missing exception\n", test)
errors++
}
probe end(1)
{
test = "set_kernel_string"
addr = get_buffer()
if (assert_string(test, "", kernel_string(addr))) {
set_kernel_string(addr, "foobar")
assert_string(test, "foobar", kernel_string(addr))
}
try {
set_kernel_string(-1, "foobar")
assert_not_reached(test)
} catch {}
test = "set_kernel_string_n"
addr = get_buffer()
if (assert_string(test, "", kernel_string(addr))) {
set_kernel_string_n(addr, 10, "foobar")
if (assert_string(test, "foobar", kernel_string(addr))) {
set_kernel_string_n(addr, 3, "foobar")
assert_string(test, "foo", kernel_string(addr))
}
}
try {
set_kernel_string_n(-1, 10, "foobar")
assert_not_reached(test)
} catch {}
/* Be sure to also test in the other direction: */
test = "kernel_string_n"
addr = get_buffer()
if (assert_string(test, "", kernel_string_n(addr, 0))) {
set_kernel_string_n(addr, 7, "potatoe")
if (assert_string(test, "potatoe", kernel_string_n(addr, 7))) {
assert_string(test, "potato", kernel_string_n(addr, 6))
}
}
try {
println(kernel_string_n(-1, 10))
assert_not_reached(test)
} catch {}
test = "set_kernel_long"
addr = get_buffer()
long_val = %( CONFIG_64BIT == "y" %? 0x123456789ABCDEF0 %: 0x12345678 %)
if (assert_number(test, 0, kernel_long(addr))) {
set_kernel_long(addr, long_val)
assert_number(test, long_val, kernel_long(addr))
}
try {
set_kernel_long(-1, 42)
assert_not_reached(test)
} catch {}
test = "set_kernel_int"
addr = get_buffer()
if (assert_number(test, 0, kernel_int(addr))) {
set_kernel_int(addr, 0x12345678)
assert_number(test, 0x12345678, kernel_int(addr))
}
try {
set_kernel_int(-1, 42)
assert_not_reached(test)
} catch {}
test = "set_kernel_short"
addr = get_buffer()
if (assert_number(test, 0, kernel_short(addr))) {
set_kernel_short(addr, 0x1234)
assert_number(test, 0x1234, kernel_short(addr))
}
try {
set_kernel_short(-1, 42)
assert_not_reached(test)
} catch {}
test = "set_kernel_char"
addr = get_buffer()
if (assert_number(test, 0, kernel_char(addr))) {
set_kernel_char(addr, 0x12)
assert_number(test, 0x12, kernel_char(addr))
}
try {
set_kernel_char(-1, 42)
assert_not_reached(test)
} catch {}
if (!errors)
println("systemtap test success")
}
function get_buffer:long () %{
static char buffer[MAXSTRINGLEN];
memset(buffer, 0, sizeof(buffer));
STAP_RETVALUE = (long)buffer;
%}
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