/* -*- mode:c; c-file-style:"k&r"; c-basic-offset: 4; tab-width:4; indent-tabs-mode:nil; mode:auto-fill; fill-column:78; -*- */
/* vim: set ts=4 sw=4 et tw=78 fo=cqt wm=0: */
/* Copyright (C) 2014 Stony Brook University
This file is part of Graphene Library OS.
Graphene Library OS is free software: you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public License
as published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
Graphene Library OS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see . */
/*
* shim_getrlimit.c
*
* Implementation of system call "getrlimit" and "setrlimit".
*/
#include
#include
#include
#include
#include
unsigned int max_fds = DEFAULT_MAX_FDS;
int shim_do_getrlimit (int resource, struct __kernel_rlimit * rlim)
{
switch (resource) {
case RLIMIT_NOFILE:
rlim->rlim_cur = max_fds;
rlim->rlim_max = MAX_MAX_FDS;
return 0;
case RLIMIT_RSS:
rlim->rlim_cur = RLIM_INFINITY;
rlim->rlim_max = RLIM_INFINITY;
return 0;
case RLIMIT_AS:
rlim->rlim_cur = RLIM_INFINITY;
rlim->rlim_max = RLIM_INFINITY;
return 0;
case RLIMIT_STACK:
rlim->rlim_cur = sys_stack_size;
rlim->rlim_max = sys_stack_size;
return 0;
case RLIMIT_DATA:
rlim->rlim_cur = brk_max_size;
rlim->rlim_max = brk_max_size;
return 0;
default:
return -ENOSYS;
}
}
int shim_do_setrlimit (int resource, struct __kernel_rlimit * rlim)
{
switch (resource) {
case RLIMIT_NOFILE:
if (rlim->rlim_cur > MAX_MAX_FDS)
return -EINVAL;
max_fds = rlim->rlim_cur;
return 0;
case RLIMIT_STACK:
sys_stack_size = rlim->rlim_cur;
return 0;
default:
return -ENOSYS;
}
}