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# chown ______________________________________________________
# long sys_chown(const char __user * filename, uid_t user, gid_t group)
@define _SYSCALL_CHOWN_NAME
%(
name = "chown"
%)
@define _SYSCALL_CHOWN_ARGSTR
%(
argstr = sprintf("%s, %d, %d", path, owner, group)
%)
probe syscall.chown = dw_syscall.chown !, nd_syscall.chown ? {}
probe syscall.chown.return = dw_syscall.chown.return !, nd_syscall.chown.return ? {}
# dw_chown _____________________________________________________
probe dw_syscall.chown = kernel.function("sys_chown").call
{
// Avoid chown16() calling chown().
%( arch == "x86_64" %?
@__syscall_compat_gate(@const("__NR_chown"), @const("__NR_ia32_chown32"))
%)
%( arch == "i386" %?
@__syscall_gate(@const("__NR_chown32"))
%)
@_SYSCALL_CHOWN_NAME
path = user_string_quoted($filename)
owner = __int32($user)
group = __int32($group)
@_SYSCALL_CHOWN_ARGSTR
}
probe dw_syscall.chown.return = kernel.function("sys_chown").return
{
%( arch == "x86_64" %?
@__syscall_compat_gate(@const("__NR_chown"), @const("__NR_ia32_chown32"))
%)
%( arch == "i386" %?
@__syscall_gate(@const("__NR_chown32"))
%)
@_SYSCALL_CHOWN_NAME
retstr = return_str(1, $return)
}
# nd_chown _____________________________________________________
probe nd_syscall.chown = kprobe.function("sys_chown") ?
{
// Avoid chown16() calling chown().
%( arch == "x86_64" %?
@__syscall_compat_gate(@const("__NR_chown"), @const("__NR_ia32_chown32"))
%)
%( arch == "i386" %?
@__syscall_gate(@const("__NR_chown32"))
%)
@_SYSCALL_CHOWN_NAME
asmlinkage()
path = user_string_quoted(pointer_arg(1))
owner = __int32(uint_arg(2))
group = __int32(uint_arg(3))
@_SYSCALL_CHOWN_ARGSTR
}
probe nd_syscall.chown.return = kprobe.function("sys_chown").return ?
{
%( arch == "x86_64" %?
@__syscall_compat_gate(@const("__NR_chown"), @const("__NR_ia32_chown32"))
%)
%( arch == "i386" %?
@__syscall_gate(@const("__NR_chown32"))
%)
@_SYSCALL_CHOWN_NAME
retstr = returnstr(1)
}