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# truncate64 __________________________________________________
#
# COMPAT_SYSCALL_DEFINE3(s390_truncate64, const char __user *, path,
# u32, high, u32, low)
#
@define _SYSCALL_COMPAT_TRUNCATE64_NAME
%(
name = "truncate"
%)
@define _SYSCALL_COMPAT_TRUNCATE64_ARGSTR
%(
argstr = sprintf("%s, %d", path, length)
%)
probe syscall.compat_truncate64 = dw_syscall.compat_truncate64 !,
nd_syscall.compat_truncate64 ? {}
probe syscall.compat_truncate64.return = dw_syscall.compat_truncate64.return !,
nd_syscall.compat_truncate64.return ? {}
# dw_compat_truncate64 _____________________________________________________
probe dw_syscall.compat_truncate64 = kernel.function("sys32_truncate64").call ?,
kernel.function("compat_sys_s390_truncate64").call ?
{
@_SYSCALL_COMPAT_TRUNCATE64_NAME
path_uaddr = @__pointer($path)
path = user_string_quoted(path_uaddr)
length = (($high << 32) | __uint32($low))
@_SYSCALL_COMPAT_TRUNCATE64_ARGSTR
}
probe dw_syscall.compat_truncate64.return =
kernel.function("sys32_truncate64").return ?,
kernel.function("compat_sys_s390_truncate64").return ?
{
@_SYSCALL_COMPAT_TRUNCATE64_NAME
@SYSC_RETVALSTR($return)
}
# nd_compat_truncate64 _____________________________________________________
probe nd_syscall.compat_truncate64 = kprobe.function("sys32_truncate64") ?,
kprobe.function("compat_sys_s390_truncate64") ?
{
asmlinkage()
@_SYSCALL_COMPAT_TRUNCATE64_NAME
path_uaddr = pointer_arg(1)
path = user_string_quoted(path_uaddr)
length = ((uint_arg(2) << 32) | uint_arg(3))
@_SYSCALL_COMPAT_TRUNCATE64_ARGSTR
}
probe nd_syscall.compat_truncate64.return =
kprobe.function("sys32_truncate64").return ?,
kprobe.function("compat_sys_s390_truncate64").return ?
{
@_SYSCALL_COMPAT_TRUNCATE64_NAME
@SYSC_RETVALSTR(returnval())
}
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