관리-도구
편집 파일: sysc_stat.stp
# stat _______________________________________________________ # long sys_stat(char __user * filename, struct __old_stat __user * statbuf) # long sys32_stat64(char __user * filename, struct stat64 __user *statbuf) # long sys_stat64(char __user * filename, struct stat64 __user * statbuf) # long sys_oabi_stat64(char __user * filename, struct oldabi_stat64 __user * statbuf) # long compat_sys_newstat(char __user * filename, struct compat_stat __user *statbuf) # COMPAT_SYSCALL_DEFINE2(s390_stat64, const char __user *, filename, struct stat64_emu31 __user *, statbuf) # @define _SYSCALL_STAT_NAME %( name = "stat" %) @define _SYSCALL_STAT_ARGSTR %( argstr = sprintf("%s, %p", filename, buf_uaddr) %) @define _SYSCALL_STAT_REGARGS %( filename_uaddr = pointer_arg(1) filename = user_string_quoted(filename_uaddr) buf_uaddr = pointer_arg(2) %) probe syscall.stat = dw_syscall.stat !, nd_syscall.stat ? {} probe syscall.stat.return = dw_syscall.stat.return !, nd_syscall.stat.return ? {} # dw_stat _____________________________________________________ probe dw_syscall.stat = kernel.function("sys_stat").call ?, kernel.function("sys_newstat").call ?, kernel.function("sys32_stat64").call ?, kernel.function("sys_stat64").call ?, kernel.function("sys_oabi_stat64").call ?, %( arch == "s390" %? kernel.function("compat_sys_s390_stat64").call ?, %) %( arch == "x86_64" %? kernel.function("compat_sys_x86_stat64").call ?, %) kernel.function("compat_sys_newstat").call ? { @_SYSCALL_STAT_NAME filename_uaddr = $filename filename = user_string_quoted($filename) buf_uaddr = $statbuf @_SYSCALL_STAT_ARGSTR } probe dw_syscall.stat.return = kernel.function("sys_stat").return ?, kernel.function("sys_newstat").return ?, kernel.function("sys32_stat64").return ?, kernel.function("sys_stat64").return ?, kernel.function("sys_oabi_stat64").return ?, %( arch == "s390" %? kernel.function("compat_sys_s390_stat64").return ?, %) %( arch == "x86_64" %? kernel.function("compat_sys_x86_stat64").return ?, %) kernel.function("compat_sys_newstat").return ? { @_SYSCALL_STAT_NAME @SYSC_RETVALSTR($return) } # nd_stat _____________________________________________________ probe nd_syscall.stat = nd1_syscall.stat!, nd2_syscall.stat!, tp_syscall.stat { } probe nd1_syscall.stat = kprobe.function("sys_stat") ?, kprobe.function("sys_newstat") ?, kprobe.function("sys32_stat64") ?, kprobe.function("sys_stat64") ?, kprobe.function("sys_oabi_stat64") ?, %( arch == "s390" %? kprobe.function("compat_sys_s390_stat64") ?, %) %( arch == "x86_64" %? kprobe.function("compat_sys_x86_stat64") ?, %) kprobe.function("compat_sys_newstat") ? { @_SYSCALL_STAT_NAME asmlinkage() @_SYSCALL_STAT_REGARGS @_SYSCALL_STAT_ARGSTR } /* kernel 4.17+ */ probe nd2_syscall.stat = kprobe.function(@arch_syscall_prefix "sys_stat") ?, kprobe.function(@arch_syscall_prefix "sys_newstat") ?, kprobe.function(@arch_syscall_prefix "compat_sys_newstat") ?, kprobe.function(@arch_syscall_prefix "compat_sys_x86_stat64") ? { __set_syscall_pt_regs(pointer_arg(1)) @_SYSCALL_STAT_NAME @_SYSCALL_STAT_REGARGS @_SYSCALL_STAT_ARGSTR } /* kernel 3.5+, but undesirable because it affects all syscalls */ probe tp_syscall.stat = __tp_syscall.stat, __tp_syscall.stat64, __tp_syscall.newstat { __set_syscall_pt_regs($regs) @_SYSCALL_STAT_NAME @_SYSCALL_STAT_REGARGS @_SYSCALL_STAT_ARGSTR } probe __tp_syscall.stat = kernel.trace("sys_enter") { @__syscall_compat_gate(@const("__NR_oldstat"), @const("__NR_compat_oldstat")) } probe __tp_syscall.stat64 = kernel.trace("sys_enter") { @__syscall_compat_gate(@const("__NR_stat64"), @const("__NR_compat_stat64")) } probe __tp_syscall.newstat = kernel.trace("sys_enter") { @__syscall_compat_gate(@const("__NR_stat"), @const("__NR_compat_stat")) } probe nd_syscall.stat.return = nd1_syscall.stat.return!, nd2_syscall.stat.return!, tp_syscall.stat.return { } probe nd1_syscall.stat.return = kprobe.function("sys_stat").return ?, kprobe.function("sys_newstat").return ?, kprobe.function("sys32_stat64").return ?, kprobe.function("sys_stat64").return ?, kprobe.function("sys_oabi_stat64").return ?, %( arch == "s390" %? kprobe.function("compat_sys_s390_stat64").return ?, %) %( arch == "x86_64" %? kprobe.function("compat_sys_x86_stat64").return ?, %) kprobe.function("compat_sys_newstat").return ? { @_SYSCALL_STAT_NAME @SYSC_RETVALSTR(returnval()) } /* kernel 4.17+ */ probe nd2_syscall.stat.return = kprobe.function(@arch_syscall_prefix "sys_stat").return ?, kprobe.function(@arch_syscall_prefix "sys_newstat").return ?, kprobe.function(@arch_syscall_prefix "compat_sys_newstat").return ?, kprobe.function(@arch_syscall_prefix "compat_sys_x86_stat64").return { @_SYSCALL_STAT_NAME @SYSC_RETVALSTR(returnval()) } /* kernel 3.5+, but undesirable because it affects all syscalls */ probe tp_syscall.stat.return = __tp_syscall.stat.return, __tp_syscall.stat64.return, __tp_syscall.newstat.return { __set_syscall_pt_regs($regs) @_SYSCALL_STAT_NAME @SYSC_RETVALSTR($ret) } probe __tp_syscall.stat.return = kernel.trace("sys_exit") { @__syscall_compat_gate(@const("__NR_oldstat"), @const("__NR_compat_oldstat")) } probe __tp_syscall.stat64.return = kernel.trace("sys_exit") { @__syscall_compat_gate(@const("__NR_stat64"), @const("__NR_compat_stat64")) } probe __tp_syscall.newstat.return = kernel.trace("sys_exit") { @__syscall_compat_gate(@const("__NR_stat"), @const("__NR_compat_stat")) }