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# fallocate __________________________________________________
#
# asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
# u32 lenhi, u32 lenlo)
@define _SYSCALL_COMPAT_FALLOCATE_NAME
%(
name = "fallocate"
%)
@define _SYSCALL_COMPAT_FALLOCATE_ARGSTR
%(
argstr = sprintf("%d, %s, %#x, %u", fd, mode_str, offset, len)
%)
@define _SYSCALL_COMPAT_FALLOCATE_REGARGS
%(
fd = int_arg(1)
mode = int_arg(2)
mode_str = _stp_fallocate_mode_str(mode)
offset = ((uint_arg(3) << 32) | uint_arg(4))
len = ((uint_arg(5) << 32) | uint_arg(6))
%)
probe syscall.compat_fallocate = dw_syscall.compat_fallocate !,
nd_syscall.compat_fallocate ? {}
probe syscall.compat_fallocate.return = dw_syscall.compat_fallocate.return !,
nd_syscall.compat_fallocate.return ? {}
# dw_compat_fallocate _____________________________________________________
probe dw_syscall.compat_fallocate = kernel.function("compat_sys_fallocate") ?
{
@_SYSCALL_COMPAT_FALLOCATE_NAME
fd = __int32($fd)
mode = __int32($mode)
mode_str = _stp_fallocate_mode_str(mode)
offset = (($offhi << 32) | $offlo)
len = (($lenhi << 32) | $lenlo)
@_SYSCALL_COMPAT_FALLOCATE_ARGSTR
}
probe dw_syscall.compat_fallocate.return =
kernel.function("compat_sys_fallocate").return ?
{
@_SYSCALL_COMPAT_FALLOCATE_NAME
@SYSC_RETVALSTR($return)
}
# nd_compat_fallocate _____________________________________________________
probe nd_syscall.compat_fallocate = nd1_syscall.compat_fallocate!, tp_syscall.compat_fallocate
{ }
probe nd1_syscall.compat_fallocate = kprobe.function("compat_sys_fallocate") ?
{
asmlinkage()
@_SYSCALL_COMPAT_FALLOCATE_NAME
@_SYSCALL_COMPAT_FALLOCATE_REGARGS
@_SYSCALL_COMPAT_FALLOCATE_ARGSTR
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.compat_fallocate = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__compat_syscall_gate(@const("__NR_fallocate"))
@_SYSCALL_COMPAT_FALLOCATE_NAME
@_SYSCALL_COMPAT_FALLOCATE_REGARGS
@_SYSCALL_COMPAT_FALLOCATE_ARGSTR
}
probe nd_syscall.compat_fallocate.return = nd1_syscall.compat_fallocate.return!, tp_syscall.compat_fallocate.return
{ }
probe nd1_syscall.compat_fallocate.return =
kprobe.function("compat_sys_fallocate").return ?
{
@_SYSCALL_COMPAT_FALLOCATE_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.compat_fallocate.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__compat_syscall_gate(@const("__NR_fallocate"))
@_SYSCALL_COMPAT_FALLOCATE_NAME
@SYSC_RETVALSTR($ret)
}
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