33c61b3c94
This is a collection of things from internal/misc that should have been separated from misc.
75 lines
1.5 KiB
Go
75 lines
1.5 KiB
Go
package osutil
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import (
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"fmt"
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"log"
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"os"
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"path/filepath"
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"strings"
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"golang.org/x/sys/unix"
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)
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// Converts a relative symlink target path (e.g. ../../lib/foo.so), that is
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// absolute path
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func RelativeSymlinkTargetToDir(symPath string, dir string) (string, error) {
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var path string
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oldWd, err := os.Getwd()
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if err != nil {
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log.Print("Unable to get current working dir")
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return path, err
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}
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if err := os.Chdir(dir); err != nil {
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log.Print("Unable to change to working dir: ", dir)
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return path, err
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}
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path, err = filepath.Abs(symPath)
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if err != nil {
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log.Print("Unable to resolve abs path to: ", symPath)
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return path, err
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}
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if err := os.Chdir(oldWd); err != nil {
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log.Print("Unable to change to old working dir")
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return path, err
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}
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return path, nil
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}
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func FreeSpace(path string) (uint64, error) {
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var stat unix.Statfs_t
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unix.Statfs(path, &stat)
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size := stat.Bavail * uint64(stat.Bsize)
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return size, nil
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}
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func getKernelReleaseFile() (string, error) {
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files, _ := filepath.Glob("/usr/share/kernel/*/kernel.release")
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// only one kernel flavor supported
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if len(files) != 1 {
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return "", fmt.Errorf("only one kernel release/flavor is supported, found: %q", files)
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}
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return files[0], nil
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}
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func GetKernelVersion() (string, error) {
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var version string
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releaseFile, err := getKernelReleaseFile()
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if err != nil {
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return version, err
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}
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contents, err := os.ReadFile(releaseFile)
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if err != nil {
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return version, err
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}
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return strings.TrimSpace(string(contents)), nil
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}
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