diff options
Diffstat (limited to 'vendor/github.com/prometheus/procfs/internal/util/sysreadfile.go')
-rw-r--r-- | vendor/github.com/prometheus/procfs/internal/util/sysreadfile.go | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/vendor/github.com/prometheus/procfs/internal/util/sysreadfile.go b/vendor/github.com/prometheus/procfs/internal/util/sysreadfile.go deleted file mode 100644 index 68b37c4b3..000000000 --- a/vendor/github.com/prometheus/procfs/internal/util/sysreadfile.go +++ /dev/null @@ -1,45 +0,0 @@ -// Copyright 2018 The Prometheus Authors -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// +build linux,!appengine - -package util - -import ( - "bytes" - "os" - "syscall" -) - -// SysReadFile is a simplified ioutil.ReadFile that invokes syscall.Read directly. -// https://github.com/prometheus/node_exporter/pull/728/files -func SysReadFile(file string) (string, error) { - f, err := os.Open(file) - if err != nil { - return "", err - } - defer f.Close() - - // On some machines, hwmon drivers are broken and return EAGAIN. This causes - // Go's ioutil.ReadFile implementation to poll forever. - // - // Since we either want to read data or bail immediately, do the simplest - // possible read using syscall directly. - b := make([]byte, 128) - n, err := syscall.Read(int(f.Fd()), b) - if err != nil { - return "", err - } - - return string(bytes.TrimSpace(b[:n])), nil -} |