system: pam_limits: add support for unlimited/infinity/-1

Early pam_limits module didn't support special values for items.
This patch is adding support to special values unlimited, infinity and -1.

Issue: https://github.com/ansible/ansible-modules-extras/issues/1033
Signed-off-by: Ondra Machacek <machacek.ondra@gmail.com>
This commit is contained in:
Ondra Machacek 2015-10-04 09:54:25 +02:00 committed by Matt Clay
parent 451a05c1a2
commit d43d4718f3

View file

@ -102,7 +102,7 @@ def main():
domain = dict(required=True, type='str'),
limit_type = dict(required=True, type='str', choices=pam_types),
limit_item = dict(required=True, type='str', choices=pam_items),
value = dict(required=True, type='int'),
value = dict(required=True, type='str'),
use_max = dict(default=False, type='bool'),
use_min = dict(default=False, type='bool'),
backup = dict(default=False, type='bool'),
@ -127,6 +127,12 @@ def main():
else:
module.fail_json(msg="%s is not visible (check presence, access rights, use sudo)" % (limits_conf) )
if use_max and use_min:
module.fail_json(msg="Cannot use use_min and use_max at the same time." )
if not (value in ['unlimited', 'infinity', '-1'] or value.isdigit()):
module.fail_json(msg="Argument 'value' can be one of 'unlimited', 'infinity', '-1' or positive number. Refer to manual pages for more details.")
# Backup
if backup:
backup_file = module.backup_local(limits_conf)
@ -160,7 +166,10 @@ def main():
line_domain = line_fields[0]
line_type = line_fields[1]
line_item = line_fields[2]
actual_value = int(line_fields[3])
actual_value = line_fields[3]
if not (actual_value in ['unlimited', 'infinity', '-1'] or actual_value.isdigit()):
module.fail_json(msg="Invalid configuration of '%s'. Current value of %s is unsupported." % (limits_conf, line_item))
# Found the line
if line_domain == domain and line_type == limit_type and line_item == limit_item:
@ -170,11 +179,24 @@ def main():
nf.write(line)
continue
actual_value_unlimited = actual_value in ['unlimited', 'infinity', '-1']
value_unlimited = value in ['unlimited', 'infinity', '-1']
if use_max:
new_value = max(value, actual_value)
if value.isdigit() and actual_value.isdigit():
new_value = max(int(value), int(actual_value))
elif actual_value_unlimited:
new_value = actual_value
else:
new_value = value
if use_min:
new_value = min(value,actual_value)
if value.isdigit() and actual_value.isdigit():
new_value = min(int(value), int(actual_value))
elif value_unlimited:
new_value = actual_value
else:
new_value = value
# Change line only if value has changed
if new_value != actual_value: