NAME

       /proc/pid/syscall - currently executed system call

DESCRIPTION

       /proc/pid/syscall (since Linux 2.6.27)
              This file exposes the system call number and argument registers for the system call
              currently being executed by the process,  followed  by  the  values  of  the  stack
              pointer  and  program  counter registers.  The values of all six argument registers
              are exposed, although most system calls use fewer registers.

              If the process is blocked, but not in a system call, then the file displays  -1  in
              place  of  the system call number, followed by just the values of the stack pointer
              and program counter.  If process is not blocked, then the file  contains  just  the
              string "running".

              This    file    is    present    only   if   the   kernel   was   configured   with
              CONFIG_HAVE_ARCH_TRACEHOOK.

              Permission  to  access  this  file  is   governed   by   a   ptrace   access   mode
              PTRACE_MODE_ATTACH_FSCREDS check; see ptrace(2).

SEE ALSO

       proc(5)