/
rlimit_posix.go
50 lines (43 loc) · 1.74 KB
/
rlimit_posix.go
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// +build !windows,!plan9,!nacl
/*
* Copyright (c) 2019-2021. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
package cmd
import (
"fmt"
"syscall"
"github.com/pydio/cells/common"
)
// checkFdlimit issues a warning if the OS limit for
// max file descriptors is below a recommended minimum.
func checkFdlimit() error {
const hardMin = 1024
const recMin = 8192
// Warn if ulimit is too low for production sites
rlimit := &syscall.Rlimit{}
err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, rlimit)
if err == nil && rlimit.Cur < hardMin {
return fmt.Errorf("File descriptor limit %d is too low for %s. "+
"At least %d is required, %d is recommended. Fix with \"ulimit -n %d\".\n", rlimit.Cur, common.PackageLabel, hardMin, recMin, recMin)
} else if err == nil && rlimit.Cur < recMin {
fmt.Printf("WARNING: File descriptor limit %d is too low for running %s in production. "+
"At least %d is recommended. Fix with \"ulimit -n %d\".\n", rlimit.Cur, common.PackageLabel, recMin, recMin)
}
return nil
}