diff options
Diffstat (limited to 'vendor/github.com/prometheus/procfs/proc_fdinfo.go')
-rw-r--r-- | vendor/github.com/prometheus/procfs/proc_fdinfo.go | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/vendor/github.com/prometheus/procfs/proc_fdinfo.go b/vendor/github.com/prometheus/procfs/proc_fdinfo.go deleted file mode 100644 index 83b67d1bd..000000000 --- a/vendor/github.com/prometheus/procfs/proc_fdinfo.go +++ /dev/null @@ -1,132 +0,0 @@ -// Copyright 2019 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. - -package procfs - -import ( - "bufio" - "fmt" - "io/ioutil" - "os" - "regexp" - "strings" -) - -// Regexp variables -var ( - rPos = regexp.MustCompile(`^pos:\s+(\d+)$`) - rFlags = regexp.MustCompile(`^flags:\s+(\d+)$`) - rMntID = regexp.MustCompile(`^mnt_id:\s+(\d+)$`) - rInotify = regexp.MustCompile(`^inotify`) -) - -// ProcFDInfo contains represents file descriptor information. -type ProcFDInfo struct { - // File descriptor - FD string - // File offset - Pos string - // File access mode and status flags - Flags string - // Mount point ID - MntID string - // List of inotify lines (structed) in the fdinfo file (kernel 3.8+ only) - InotifyInfos []InotifyInfo -} - -// FDInfo constructor. On kernels older than 3.8, InotifyInfos will always be empty. -func (p Proc) FDInfo(fd string) (*ProcFDInfo, error) { - f, err := os.Open(p.path("fdinfo", fd)) - if err != nil { - return nil, err - } - defer f.Close() - - fdinfo, err := ioutil.ReadAll(f) - if err != nil { - return nil, fmt.Errorf("could not read %s: %s", f.Name(), err) - } - - var text, pos, flags, mntid string - var inotify []InotifyInfo - - scanner := bufio.NewScanner(strings.NewReader(string(fdinfo))) - for scanner.Scan() { - text = scanner.Text() - if rPos.MatchString(text) { - pos = rPos.FindStringSubmatch(text)[1] - } else if rFlags.MatchString(text) { - flags = rFlags.FindStringSubmatch(text)[1] - } else if rMntID.MatchString(text) { - mntid = rMntID.FindStringSubmatch(text)[1] - } else if rInotify.MatchString(text) { - newInotify, err := parseInotifyInfo(text) - if err != nil { - return nil, err - } - inotify = append(inotify, *newInotify) - } - } - - i := &ProcFDInfo{ - FD: fd, - Pos: pos, - Flags: flags, - MntID: mntid, - InotifyInfos: inotify, - } - - return i, nil -} - -// InotifyInfo represents a single inotify line in the fdinfo file. -type InotifyInfo struct { - // Watch descriptor number - WD string - // Inode number - Ino string - // Device ID - Sdev string - // Mask of events being monitored - Mask string -} - -// InotifyInfo constructor. Only available on kernel 3.8+. -func parseInotifyInfo(line string) (*InotifyInfo, error) { - r := regexp.MustCompile(`^inotify\s+wd:([0-9a-f]+)\s+ino:([0-9a-f]+)\s+sdev:([0-9a-f]+)\s+mask:([0-9a-f]+)`) - m := r.FindStringSubmatch(line) - i := &InotifyInfo{ - WD: m[1], - Ino: m[2], - Sdev: m[3], - Mask: m[4], - } - return i, nil -} - -// ProcFDInfos represents a list of ProcFDInfo structs. -type ProcFDInfos []ProcFDInfo - -func (p ProcFDInfos) Len() int { return len(p) } -func (p ProcFDInfos) Swap(i, j int) { p[i], p[j] = p[j], p[i] } -func (p ProcFDInfos) Less(i, j int) bool { return p[i].FD < p[j].FD } - -// InotifyWatchLen returns the total number of inotify watches -func (p ProcFDInfos) InotifyWatchLen() (int, error) { - length := 0 - for _, f := range p { - length += len(f.InotifyInfos) - } - - return length, nil -} |