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# 32-bit x86-specific system calls
# These are typically defined in arch/i386
#
# get_thread_area ____________________________________________
/*
* asmlinkage int
* sys_get_thread_area(struct user_desc __user *u_info)
*/
probe nd_syscall.get_thread_area = kprobe.function("sys_get_thread_area")
{
name = "get_thread_area"
// u_info_uaddr = $u_info
asmlinkage()
u_info_uaddr = pointer_arg(1)
argstr = sprintf("%p", u_info_uaddr)
}
probe nd_syscall.get_thread_area.return = kprobe.function("sys_get_thread_area").return
{
name = "get_thread_area"
retstr = returnstr(1)
}
# iopl _______________________________________________________
# long sys_iopl(unsigned long unused)
# NOTE. This function is only in i386 and x86_64 and its args vary
# between those two archs.
#
probe nd_syscall.iopl = kprobe.function("sys_iopl")
{
name = "iopl"
argstr = ""
}
probe nd_syscall.iopl.return = kprobe.function("sys_iopl").return
{
name = "iopl"
retstr = returnstr(1)
}
# ipc ________________________________________________________
# int sys_ipc (uint call, int first, int second, int third, void __user *ptr, long fifth)
#
probe nd_syscall.ipc = kprobe.function("sys_ipc") ?
{
name = "ipc"
// call = $call
// first = $first
// second = $second
// third = $third
// ptr_uaddr = $ptr
// fifth = $fifth
// argstr = sprintf("%d, %d, %d, %d, %p, %d", $call, $first,
// $second, $third, $ptr, $fifth)
asmlinkage()
call = uint_arg(1)
first = int_arg(2)
second = int_arg(3)
third = int_arg(4)
ptr_uaddr = pointer_arg(5)
fifth = long_arg(6)
argstr = sprintf("%d, %d, %d, %d, %p, %d", call, first,
second, third, ptr_uaddr, fifth)
}
probe nd_syscall.ipc.return = kprobe.function("sys_ipc").return ?
{
name = "ipc"
retstr = returnstr(1)
}
# mmap2 ____________________________________________
# sys_mmap2(unsigned long addr, unsigned long len,
# unsigned long prot, unsigned long flags,
# unsigned long fd, unsigned long pgoff)
#
probe nd_syscall.mmap2 = kprobe.function("sys_mmap2") ?
{
name = "mmap2"
// start = $addr
// length = $len
// prot = $prot
// flags = $flags
// fd = __int32($fd)
// pgoffset = $pgoff
// argstr = sprintf("%p, %d, %s, %s, %d, %d", $addr,
// $len, _mprotect_prot_str($prot), _mmap_flags($flags),
// __int32($fd), $pgoff)
asmlinkage()
start = ulong_arg(1)
length = ulong_arg(2)
prot = ulong_arg(3)
flags = ulong_arg(4)
# Although the kernel gets an unsigned long fd, on the
# user-side it is a signed int. Fix this.
fd = int_arg(5)
pgoffset = ulong_arg(6)
argstr = sprintf("%p, %d, %s, %s, %d, %d", start,
length, _mprotect_prot_str(prot), _mmap_flags(flags),
fd, pgoffset)
}
probe nd_syscall.mmap2.return = kprobe.function("sys_mmap2").return ?
{
name = "mmap2"
retstr = returnstr(2)
}
# set_thread_area ____________________________________________
/*
* asmlinkage int
* sys_set_thread_area(struct user_desc __user *u_info)
*/
probe nd_syscall.set_thread_area = kprobe.function("sys_set_thread_area")
{
name = "set_thread_area"
// u_info_uaddr = $u_info
asmlinkage()
u_info_uaddr = pointer_arg(1)
argstr = sprintf("%p", u_info_uaddr)
}
probe nd_syscall.set_thread_area.return = kprobe.function("sys_set_thread_area").return
{
name = "set_thread_area"
retstr = returnstr(1)
}
# set_zone_reclaim ___________________________________________
/*
* asmlinkage long
* sys_set_zone_reclaim(unsigned int node,
* unsigned int zone,
* unsigned int state)
*/
probe nd_syscall.set_zone_reclaim = kprobe.function("sys_set_zone_reclaim") ?
{
name = "set_zone_reclaim"
// node = $node
// zone = $zone
// state = $state
// argstr = sprintf("%d, %d, %d", $node, $zone, $state)
asmlinkage()
node = uint_arg(1)
zone = uint_arg(2)
state = uint_arg(3)
argstr = sprintf("%d, %d, %d", node, zone, state)
}
probe nd_syscall.set_zone_reclaim.return = kprobe.function("sys_set_zone_reclaim").return ?
{
name = "set_zone_reclaim"
retstr = returnstr(1)
}
# sigaltstack ________________________________________________
# int sys_sigaltstack(unsigned long ebx)
#
# NOTE: args vary between archs.
#
probe nd_syscall.sigaltstack = kprobe.function("sys_sigaltstack")
{
name = "sigaltstack"
// ussp = %( kernel_vr < "2.6.25" %? $ebx %: %( kernel_vr < "2.6.30" %? $bx %: $regs->bx %) %)
// NB: no asmlinkage()
ussp = %( kernel_vr < "2.6.30" %? ulong_arg(1) %:
@cast(ulong_arg(1), "pt_regs", "kernel<asm/ptrace.h>")->bx %)
argstr = sprintf("%p", ussp)
}
probe nd_syscall.sigaltstack.return = kprobe.function("sys_sigaltstack").return
{
name = "sigaltstack"
retstr = returnstr(1)
}
# vm86 _______________________________________________________
#
# int sys_vm86(struct pt_regs regs)
#
probe nd_syscall.vm86 = kprobe.function("sys_vm86") ?
{
name = "vm86"
/*
* unsupported type identifier '$regs'
* regs = $regs
*/
argstr = ""
}
probe nd_syscall.vm86.return = kprobe.function("sys_vm86").return ?
{
name = "vm86"
retstr = returnstr(1)
}
# vm86old ____________________________________________________
#
# int sys_vm86old(struct pt_regs regs)
#
probe nd_syscall.vm86old = kprobe.function("sys_vm86old") ?
{
name = "vm86old"
/*
* unsupported type identifier '$regs'
* regs = $regs
*/
argstr = ""
}
probe nd_syscall.vm86old.return = kprobe.function("sys_vm86old").return ?
{
name = "vm86old"
retstr = returnstr(1)
}
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