diff options
Diffstat (limited to 'vendor/github.com/prometheus/procfs/sysfs/fs.go')
-rw-r--r-- | vendor/github.com/prometheus/procfs/sysfs/fs.go | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/vendor/github.com/prometheus/procfs/sysfs/fs.go b/vendor/github.com/prometheus/procfs/sysfs/fs.go deleted file mode 100644 index fb15d438a..000000000 --- a/vendor/github.com/prometheus/procfs/sysfs/fs.go +++ /dev/null @@ -1,108 +0,0 @@ -// Copyright 2017 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 sysfs - -import ( - "fmt" - "os" - "path/filepath" - - "github.com/prometheus/procfs/bcache" - "github.com/prometheus/procfs/xfs" -) - -// FS represents the pseudo-filesystem sys, which provides an interface to -// kernel data structures. -type FS string - -// DefaultMountPoint is the common mount point of the sys filesystem. -const DefaultMountPoint = "/sys" - -// NewFS returns a new FS mounted under the given mountPoint. It will error -// if the mount point can't be read. -func NewFS(mountPoint string) (FS, error) { - info, err := os.Stat(mountPoint) - if err != nil { - return "", fmt.Errorf("could not read %s: %s", mountPoint, err) - } - if !info.IsDir() { - return "", fmt.Errorf("mount point %s is not a directory", mountPoint) - } - - return FS(mountPoint), nil -} - -// Path returns the path of the given subsystem relative to the sys root. -func (fs FS) Path(p ...string) string { - return filepath.Join(append([]string{string(fs)}, p...)...) -} - -// XFSStats retrieves XFS filesystem runtime statistics for each mounted XFS -// filesystem. Only available on kernel 4.4+. On older kernels, an empty -// slice of *xfs.Stats will be returned. -func (fs FS) XFSStats() ([]*xfs.Stats, error) { - matches, err := filepath.Glob(fs.Path("fs/xfs/*/stats/stats")) - if err != nil { - return nil, err - } - - stats := make([]*xfs.Stats, 0, len(matches)) - for _, m := range matches { - f, err := os.Open(m) - if err != nil { - return nil, err - } - - // "*" used in glob above indicates the name of the filesystem. - name := filepath.Base(filepath.Dir(filepath.Dir(m))) - - // File must be closed after parsing, regardless of success or - // failure. Defer is not used because of the loop. - s, err := xfs.ParseStats(f) - _ = f.Close() - if err != nil { - return nil, err - } - - s.Name = name - stats = append(stats, s) - } - - return stats, nil -} - -// BcacheStats retrieves bcache runtime statistics for each bcache. -func (fs FS) BcacheStats() ([]*bcache.Stats, error) { - matches, err := filepath.Glob(fs.Path("fs/bcache/*-*")) - if err != nil { - return nil, err - } - - stats := make([]*bcache.Stats, 0, len(matches)) - for _, uuidPath := range matches { - // "*-*" in glob above indicates the name of the bcache. - name := filepath.Base(uuidPath) - - // stats - s, err := bcache.GetStats(uuidPath) - if err != nil { - return nil, err - } - - s.Name = name - stats = append(stats, s) - } - - return stats, nil -} |