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).
