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# syncfs _____________________________________________________
#
# SYSCALL_DEFINE1(syncfs, int, fd)
@define _SYSCALL_SYNCFS_NAME
%(
name = "syncfs"
%)
@define _SYSCALL_SYNCFS_ARGSTR
%(
argstr = sprintf("%d", fd)
%)
@define _SYSCALL_SYNCFS_REGARGS
%(
fd = int_arg(1)
%)
probe syscall.syncfs = dw_syscall.syncfs !, nd_syscall.syncfs ? {}
probe syscall.syncfs.return = dw_syscall.syncfs.return !,
nd_syscall.syncfs.return ? {}
# dw_syncfs _____________________________________________________
probe dw_syscall.syncfs = kernel.function("sys_syncfs").call ?
{
@_SYSCALL_SYNCFS_NAME
fd = __int32($fd)
@_SYSCALL_SYNCFS_ARGSTR
}
probe dw_syscall.syncfs.return = kernel.function("sys_syncfs").return ?
{
@_SYSCALL_SYNCFS_NAME
@SYSC_RETVALSTR($return)
}
# nd_syncfs _____________________________________________________
probe nd_syscall.syncfs = nd1_syscall.syncfs!, nd2_syscall.syncfs!, tp_syscall.syncfs
{ }
probe nd1_syscall.syncfs = kprobe.function("sys_syncfs") ?
{
asmlinkage()
@_SYSCALL_SYNCFS_NAME
@_SYSCALL_SYNCFS_REGARGS
@_SYSCALL_SYNCFS_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.syncfs = kprobe.function(@arch_syscall_prefix "sys_syncfs") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_SYNCFS_NAME
@_SYSCALL_SYNCFS_REGARGS
@_SYSCALL_SYNCFS_ARGSTR
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.syncfs = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_syncfs"), @const("__NR_compat_syncfs"))
@_SYSCALL_SYNCFS_NAME
@_SYSCALL_SYNCFS_REGARGS
@_SYSCALL_SYNCFS_ARGSTR
}
probe nd_syscall.syncfs.return = nd1_syscall.syncfs.return!, nd2_syscall.syncfs.return!, tp_syscall.syncfs.return
{ }
probe nd1_syscall.syncfs.return = kprobe.function("sys_syncfs").return ?
{
@_SYSCALL_SYNCFS_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.syncfs.return = kprobe.function(@arch_syscall_prefix "sys_syncfs").return ?
{
@_SYSCALL_SYNCFS_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.syncfs.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_syncfs"), @const("__NR_compat_syncfs"))
@_SYSCALL_SYNCFS_NAME
@SYSC_RETVALSTR($ret)
}
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