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48 lines
1.6 KiB
48 lines
1.6 KiB
// +build linux darwin openbsd netbsd solaris
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/*
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* MinIO Cloud Storage, (C) 2017 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package sys
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import (
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"runtime"
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"syscall"
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)
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// GetMaxOpenFileLimit - returns maximum file descriptor number that can be opened by this process.
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func GetMaxOpenFileLimit() (curLimit, maxLimit uint64, err error) {
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var rlimit syscall.Rlimit
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if err = syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rlimit); err == nil {
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curLimit = rlimit.Cur
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maxLimit = rlimit.Max
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}
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return curLimit, maxLimit, err
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}
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// SetMaxOpenFileLimit - sets maximum file descriptor number that can be opened by this process.
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func SetMaxOpenFileLimit(curLimit, maxLimit uint64) error {
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if runtime.GOOS == "darwin" && curLimit > 10240 {
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// The max file limit is 10240, even though
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// the max returned by Getrlimit is 1<<63-1.
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// This is OPEN_MAX in sys/syslimits.h.
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// refer https://github.com/golang/go/issues/30401
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curLimit = 10240
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}
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rlimit := syscall.Rlimit{Cur: curLimit, Max: maxLimit}
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return syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rlimit)
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}
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