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+.\" Copyright (C) 1994, 1995, Daniel Quinlan <quinlan@yggdrasil.com>
+.\" Copyright (C) 2002-2008, 2017, Michael Kerrisk <mtk.manpages@gmail.com>
+.\" Copyright (C) 2023, Alejandro Colomar <alx@kernel.org>
+.\"
+.\" SPDX-License-Identifier: GPL-3.0-or-later
+.\"
+.TH proc_pid_syscall 5 2023-08-15 "Linux man-pages 6.7"
+.SH NAME
+/proc/pid/syscall \- currently executed system call
+.SH DESCRIPTION
+.TP
+.IR /proc/ pid /syscall " (since Linux 2.6.27)"
+.\" commit ebcb67341fee34061430f3367f2e507e52ee051b
+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.
+.IP
+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".
+.IP
+This file is present only if the kernel was configured with
+.BR CONFIG_HAVE_ARCH_TRACEHOOK .
+.IP
+Permission to access this file is governed by a ptrace access mode
+.B PTRACE_MODE_ATTACH_FSCREDS
+check; see
+.BR ptrace (2).
+.SH SEE ALSO
+.BR proc (5)