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# acct _______________________________________________________
# long sys_acct(const char __user *name)
@define _SYSCALL_ACCT_NAME
%(
name = "acct"
%)
@define _SYSCALL_ACCT_ARGSTR
%(
argstr = filename
%)
@define _SYSCALL_ACCT_REGARGS
%(
filename = user_string_quoted(pointer_arg(1))
filename_unquoted = user_string_nofault(pointer_arg(1))
%)
@define _SYSCALL_ACCT_REGARGS_STORE
%(
if (@probewrite(filename_unquoted))
set_user_string_arg(pointer_arg(1), filename_unquoted)
%)
probe syscall.acct = dw_syscall.acct !, nd_syscall.acct ? {}
probe syscall.acct.return = dw_syscall.acct.return !, nd_syscall.acct.return ? {}
# dw_acct _____________________________________________________
probe dw_syscall.acct = kernel.function("sys_acct").call ?
{
@_SYSCALL_ACCT_NAME
filename = user_string_quoted($name)
@_SYSCALL_ACCT_ARGSTR
}
probe dw_syscall.acct.return = kernel.function("sys_acct").return ?
{
@_SYSCALL_ACCT_NAME
@SYSC_RETVALSTR($return)
}
# nd_acct _____________________________________________________
probe nd_syscall.acct = nd1_syscall.acct!, nd2_syscall.acct!, tp_syscall.acct
{ }
probe nd1_syscall.acct = kprobe.function("sys_acct") ?
{
@_SYSCALL_ACCT_NAME
asmlinkage()
@_SYSCALL_ACCT_REGARGS
@_SYSCALL_ACCT_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.acct = kprobe.function(@arch_syscall_prefix "sys_acct") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_ACCT_NAME
@_SYSCALL_ACCT_REGARGS
@_SYSCALL_ACCT_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_ACCT_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.acct = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_acct"), @const("__NR_compat_acct"))
@_SYSCALL_ACCT_NAME
@_SYSCALL_ACCT_REGARGS
@_SYSCALL_ACCT_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_ACCT_REGARGS_STORE %)
}
probe nd_syscall.acct.return = nd1_syscall.acct.return!, nd2_syscall.acct.return!, tp_syscall.acct.return
{ }
probe nd1_syscall.acct.return = kprobe.function("sys_acct").return ?
{
@_SYSCALL_ACCT_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.acct.return = kprobe.function(@arch_syscall_prefix "sys_acct").return ?
{
@_SYSCALL_ACCT_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.acct.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_acct"), @const("__NR_compat_acct"))
@_SYSCALL_ACCT_NAME
@SYSC_RETVALSTR($ret)
}
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