From 78f22b973fa2c9b09bd974680836df17163d9ee0 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Mon, 26 Oct 2015 19:40:43 +0100 Subject: util-lib: split out resource limits related calls into rlimit-util.[ch] --- src/basic/rlimit-util.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 src/basic/rlimit-util.c (limited to 'src/basic/rlimit-util.c') diff --git a/src/basic/rlimit-util.c b/src/basic/rlimit-util.c new file mode 100644 index 0000000000..7f9d63224d --- /dev/null +++ b/src/basic/rlimit-util.c @@ -0,0 +1,69 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +/*** + This file is part of systemd. + + Copyright 2010 Lennart Poettering + + systemd 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 2.1 of the License, or + (at your option) any later version. + + systemd 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 systemd; If not, see . +***/ + +#include "missing.h" +#include "rlimit-util.h" +#include "util.h" + +int setrlimit_closest(int resource, const struct rlimit *rlim) { + struct rlimit highest, fixed; + + assert(rlim); + + if (setrlimit(resource, rlim) >= 0) + return 0; + + if (errno != EPERM) + return -errno; + + /* So we failed to set the desired setrlimit, then let's try + * to get as close as we can */ + assert_se(getrlimit(resource, &highest) == 0); + + fixed.rlim_cur = MIN(rlim->rlim_cur, highest.rlim_max); + fixed.rlim_max = MIN(rlim->rlim_max, highest.rlim_max); + + if (setrlimit(resource, &fixed) < 0) + return -errno; + + return 0; +} + +static const char* const rlimit_table[_RLIMIT_MAX] = { + [RLIMIT_CPU] = "LimitCPU", + [RLIMIT_FSIZE] = "LimitFSIZE", + [RLIMIT_DATA] = "LimitDATA", + [RLIMIT_STACK] = "LimitSTACK", + [RLIMIT_CORE] = "LimitCORE", + [RLIMIT_RSS] = "LimitRSS", + [RLIMIT_NOFILE] = "LimitNOFILE", + [RLIMIT_AS] = "LimitAS", + [RLIMIT_NPROC] = "LimitNPROC", + [RLIMIT_MEMLOCK] = "LimitMEMLOCK", + [RLIMIT_LOCKS] = "LimitLOCKS", + [RLIMIT_SIGPENDING] = "LimitSIGPENDING", + [RLIMIT_MSGQUEUE] = "LimitMSGQUEUE", + [RLIMIT_NICE] = "LimitNICE", + [RLIMIT_RTPRIO] = "LimitRTPRIO", + [RLIMIT_RTTIME] = "LimitRTTIME" +}; + +DEFINE_STRING_TABLE_LOOKUP(rlimit, int); -- cgit v1.2.3-54-g00ecf