mirror of https://github.com/perkeep/perkeep.git
52 lines
1.3 KiB
Go
52 lines
1.3 KiB
Go
// +build freebsd
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/*
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Copyright 2012 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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"syscall"
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"unsafe"
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)
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func init() {
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osSelfPath = selfPathFreeBSD
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}
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func selfPathFreeBSD() (string, error) {
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mib := [4]int32{1 /* CTL_KERN */, 14 /* KERN_PROC */, 12 /* KERN_PROC_PATHNAME */, -1}
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n := uintptr(0)
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// get length
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_, _, err := syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(unsafe.Pointer(&mib[0])), 4, 0, uintptr(unsafe.Pointer(&n)), 0, 0)
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if err != 0 {
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return "", err
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}
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if n == 0 { // shouldn't happen
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return "", nil
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}
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buf := make([]byte, n)
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_, _, err = syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(unsafe.Pointer(&mib[0])), 4, uintptr(unsafe.Pointer(&buf[0])), uintptr(unsafe.Pointer(&n)), 0, 0)
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if err != 0 {
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return "", err
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}
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if n == 0 { // shouldn't happen
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return "", nil
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}
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return string(buf[:n-1]), nil
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}
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