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50 lines
1.7 KiB
Go
50 lines
1.7 KiB
Go
// +build linux darwin openbsd netbsd solaris
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// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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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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