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#! /usr/bin/python3
# -*- python -*-
# -*- coding: utf-8 -*-
# SPDX-License-Identifier: GPL-2.0-only
#
# print process flags
# Copyright (C) 2015-2025 Red Hat, Inc.
# Arnaldo Carvalho de Melo <acme@redhat.com>
# John Kacur <jkacur@redhat.com>
import procfs, re, fnmatch, sys
import argparse
from functools import reduce
ps = None
def thread_mapper(s):
global ps
try:
return [int(s), ]
except:
pass
try:
return ps.find_by_regex(re.compile(fnmatch.translate(s)))
except:
return ps.find_by_name(s)
def main(argv):
global ps
ps = procfs.pidstats()
parser = argparse.ArgumentParser(description='Print process flags')
parser.add_argument('pid', nargs='*', help='a list of pids or names')
args = parser.parse_args()
if len(argv) > 1:
pids = args.pid
pids = reduce(lambda i, j: i + j, list(map(thread_mapper, pids)))
else:
pids = list(ps.processes.keys())
pids.sort()
len_comms = []
for pid in pids:
if pid in ps:
try:
len(ps[pid]["stat"]["comm"])
except (TypeError, FileNotFoundError):
continue
len_comms.append(len(ps[pid]["stat"]["comm"]))
max_comm_len = max(len_comms, default=0)
del len_comms
for pid in pids:
if pid not in ps:
continue
try:
flags = ps[pid].stat.process_flags()
except AttributeError:
continue
# Remove flags that were superseeded
if "PF_THREAD_BOUND" in flags and "PF_NO_SETAFFINITY" in flags:
flags.remove("PF_THREAD_BOUND")
if "PF_FLUSHER" in flags and "PF_NPROC_EXCEEDED" in flags:
flags.remove("PF_FLUSHER")
if "PF_SWAPOFF" in flags and "PF_MEMALLOC_NOIO" in flags:
flags.remove("PF_SWAPOFF")
if "PF_FREEZER_NOSIG" in flags and "PF_SUSPEND_TASK" in flags:
flags.remove("PF_FREEZER_NOSIG")
comm = ps[pid].stat["comm"]
flags.sort()
sflags = reduce(lambda i, j: "%s|%s" % (i, j), [a[3:] for a in flags])
print("%6d %*s %s" %(pid, max_comm_len, comm, sflags))
if __name__ == '__main__':
main(sys.argv)
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