proc_pid_syscall(5) File Formats Manual proc_pid_syscall(5)
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 ex-
posed, 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 CON-
FIG_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)
Linux man-pages 6.7 2023-08-15 proc_pid_syscall(5)
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