관리-도구

편집 파일: sysc_mmap.stp

# In kernels < 2.6.33, mmap()/mmap2() was handled by arch-specific
# code.  In kernels >= 2.6.33, the arch-specific code just calls
# generic sys_mmap_pgoff().
%( kernel_v < "2.6.33" %?
# mmap
# sys_mmap (unsigned long addr, unsigned long len, int prot, int flags, int fd, long off)
#

@define _SYSCALL_MMAP_NAME
%(
	name = "mmap"
%)

@define _SYSCALL_MMAP_ARGSTR
%(
	argstr = sprintf("%p, %u, %s, %s, %d, %d", start, len, prot_str,
	                 flags_str, fd, offset)
%)

probe syscall.mmap = dw_syscall.mmap !, nd_syscall.mmap ? {}
probe syscall.mmap.return = dw_syscall.mmap.return !, nd_syscall.mmap.return ? {}

# dw_mmap _____________________________________________________

probe dw_syscall.mmap = kernel.function("sys_mmap") ?
{
        @_SYSCALL_MMAP_NAME
        start = $addr
        len = $len
        prot = $prot
	prot_str = _mprotect_prot_str(prot)
        flags = $flags
	flags_str = _mmap_flags(flags)
	# Although the kernel gets an unsigned long fd, on the
	# user-side it is a signed int.  Fix this.
	fd = __int32($fd)
        offset = $off
        @_SYSCALL_MMAP_ARGSTR
}

probe dw_syscall.mmap.return = kernel.function("sys_mmap").return ?
{
        @_SYSCALL_MMAP_NAME
        @SYSC_RETVALSTR2($return)
}

# nd_mmap _____________________________________________________

probe nd_syscall.mmap = kprobe.function("sys_mmap") ?
{
	@_SYSCALL_MMAP_NAME
	asmlinkage()
	start = ulong_arg(1)
	len = ulong_arg(2)
	prot = int_arg(3)
	prot_str = _mprotect_prot_str(prot)
	flags = int_arg(4)
	flags_str = _mmap_flags(flags)
	fd = int_arg(5)
	offset = long_arg(6)
	@_SYSCALL_MMAP_ARGSTR
}

probe nd_syscall.mmap.return = kprobe.function("sys_mmap").return ?
{
	@_SYSCALL_MMAP_NAME
	@SYSC_RETVALSTR2(returnval())
}
%)