mirror of https://github.com/perkeep/perkeep.git
74 lines
1.9 KiB
Go
74 lines
1.9 KiB
Go
// +build !windows,!appengine,!solaris
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/*
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Copyright 2013 The Perkeep Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 osutil
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import (
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"fmt"
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"net"
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"os"
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"path/filepath"
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"syscall"
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)
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func mkfifo(path string, mode uint32) error {
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return syscall.Mkfifo(path, mode)
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}
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func mksocket(path string) error {
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dir := filepath.Dir(path)
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base := filepath.Base(path)
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tmp := filepath.Join(dir, "."+base)
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l, err := net.ListenUnix("unix", &net.UnixAddr{Name: tmp, Net: "unix"})
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if err != nil {
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return err
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}
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err = os.Rename(tmp, path)
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if err != nil {
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l.Close()
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os.Remove(tmp) // Ignore error
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return err
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}
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l.Close()
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return nil
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}
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func maxFD() (uint64, error) {
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var rlim syscall.Rlimit
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if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rlim); err != nil {
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if err == syscall.ENOSYS {
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// syscall.Getrlimit() not implemented in ARMv5, and it returns this string
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return 0, ErrNotSupported
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}
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return 0, fmt.Errorf("ulimit error: %v", err)
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}
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// On FreeBSD Getrlimit returns an int64, because (among other things) the
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// maximum value for the Rlimit struct fields, called RLIM_INFINITY used to
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// be defined as -1.
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// According to
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// https://github.com/freebsd/freebsd/blob/master/sys/sys/resource.h , it looks
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// like it is now defined as
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// #define RLIM_INFINITY ((rlim_t)(((__uint64_t)1 << 63) - 1))
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// which is the maximum positive value of an int64. So casting to an uint64
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// should be ok.
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return uint64(rlim.Cur), nil
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}
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