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# process_vm_readv _____________________________________________
# process_vm_readv was added in linux 3.2.
#
# SYSCALL_DEFINE6(process_vm_readv, pid_t, pid,
# const struct iovec __user *, lvec,
# unsigned long, liovcnt, const struct iovec __user *, rvec,
# unsigned long, riovcnt, unsigned long, flags)
# COMPAT_SYSCALL_DEFINE6(process_vm_readv, compat_pid_t, pid,
# const struct compat_iovec __user *, lvec,
# compat_ulong_t, liovcnt,
# const struct compat_iovec __user *, rvec,
# compat_ulong_t, riovcnt,
# compat_ulong_t, flags)
@define _SYSCALL_PROCESS_VM_READV_NAME
%(
name = "process_vm_readv"
%)
@define _SYSCALL_PROCESS_VM_READV_ARGSTR
%(
argstr = sprintf("%d, %p, %u, %p, %u, %u", pid, local_iov_uaddr,
liovcnt, remote_iov_uaddr, riovcnt, flags)
%)
@define _SYSCALL_PROCESS_VM_READV_REGARGS
%(
pid = int_arg(1)
local_iov_uaddr = pointer_arg(2)
liovcnt = ulong_arg(3)
remote_iov_uaddr = pointer_arg(4)
riovcnt = ulong_arg(5)
flags = ulong_arg(6)
%)
probe syscall.process_vm_readv = dw_syscall.process_vm_readv !,
nd_syscall.process_vm_readv ? {}
probe syscall.process_vm_readv.return = dw_syscall.process_vm_readv.return !,
nd_syscall.process_vm_readv.return ? {}
# dw_process_vm_readv _____________________________________________________
probe dw_syscall.process_vm_readv = kernel.function("sys_process_vm_readv").call ?,
kernel.function("compat_sys_process_vm_readv").call ?
{
@_SYSCALL_PROCESS_VM_READV_NAME
pid = __int32($pid)
local_iov_uaddr = @__pointer($lvec)
liovcnt = @__compat_ulong($liovcnt)
remote_iov_uaddr = @__pointer($rvec)
riovcnt = @__compat_ulong($riovcnt)
flags = @__compat_ulong($flags)
@_SYSCALL_PROCESS_VM_READV_ARGSTR
}
probe dw_syscall.process_vm_readv.return =
kernel.function("sys_process_vm_readv").return ?,
kernel.function("compat_sys_process_vm_readv").return ?
{
@_SYSCALL_PROCESS_VM_READV_NAME
@SYSC_RETVALSTR($return)
}
# nd_process_vm_readv _____________________________________________________
probe nd_syscall.process_vm_readv = nd1_syscall.process_vm_readv!, nd2_syscall.process_vm_readv!, tp_syscall.process_vm_readv
{ }
probe nd1_syscall.process_vm_readv = kprobe.function("sys_process_vm_readv") ?,
kprobe.function("compat_sys_process_vm_readv") ?
{
@_SYSCALL_PROCESS_VM_READV_NAME
asmlinkage()
@_SYSCALL_PROCESS_VM_READV_REGARGS
@_SYSCALL_PROCESS_VM_READV_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.process_vm_readv =
kprobe.function(@arch_syscall_prefix "sys_process_vm_readv") ?,
kprobe.function(@arch_syscall_prefix "compat_sys_process_vm_readv") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_PROCESS_VM_READV_NAME
@_SYSCALL_PROCESS_VM_READV_REGARGS
@_SYSCALL_PROCESS_VM_READV_ARGSTR
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.process_vm_readv = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_process_vm_readv"), @const("__NR_compat_process_vm_readv"))
@_SYSCALL_PROCESS_VM_READV_NAME
@_SYSCALL_PROCESS_VM_READV_REGARGS
@_SYSCALL_PROCESS_VM_READV_ARGSTR
}
probe nd_syscall.process_vm_readv.return = nd1_syscall.process_vm_readv.return!, nd2_syscall.process_vm_readv.return!, tp_syscall.process_vm_readv.return
{ }
probe nd1_syscall.process_vm_readv.return =
kprobe.function("sys_process_vm_readv").return ?,
kprobe.function("compat_sys_process_vm_readv").return ?
{
@_SYSCALL_PROCESS_VM_READV_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.process_vm_readv.return =
kprobe.function(@arch_syscall_prefix "sys_process_vm_readv").return ?,
kprobe.function(@arch_syscall_prefix "compat_sys_process_vm_readv").return ?
{
@_SYSCALL_PROCESS_VM_READV_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.process_vm_readv.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_process_vm_readv"), @const("__NR_compat_process_vm_readv"))
@_SYSCALL_PROCESS_VM_READV_NAME
@SYSC_RETVALSTR($ret)
}
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