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kvm
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fix: symlink handling

This commit is contained in:
Siyuan 2025-10-10 23:08:27 +00:00
parent ae77887ab2
commit aee1a01cee
1 changed files with 15 additions and 11 deletions
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26
cmd/main.go
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@ -117,31 +117,31 @@ func supervise() error {
return nil
}
func isSymlinkTo(dst, src string) bool {
file, err := os.Stat(dst)
func isSymlinkTo(oldName, newName string) bool {
file, err := os.Stat(newName)
if err != nil {
return false
}
if file.Mode()&os.ModeSymlink != os.ModeSymlink {
return false
}
target, err := os.Readlink(dst)
target, err := os.Readlink(newName)
if err != nil {
return false
}
return target == src
return target == oldName
}
func ensureSymlink(dst, src string) error {
if isSymlinkTo(dst, src) {
func ensureSymlink(oldName, newName string) error {
if isSymlinkTo(oldName, newName) {
return nil
}
_ = os.Remove(dst)
return os.Symlink(dst, src)
_ = os.Remove(newName)
return os.Symlink(oldName, newName)
}
func renameFile(f *os.File, newName string) error {
f.Close()
_ = f.Close()
// try to rename the file first
if err := os.Rename(f.Name(), newName); err == nil {
@ -180,6 +180,8 @@ func renameFile(f *os.File, newName string) error {
}
func createErrorDump(logFile *os.File) {
fmt.Println()
fileName := fmt.Sprintf(
errorDumpTemplate,
time.Now().Format("20060102-150405"),
@ -191,9 +193,11 @@ func createErrorDump(logFile *os.File) {
return
}
fmt.Printf("error dump copied: %s\n", fileName)
fmt.Printf("error dump copied: %s\n", filePath)
if err := ensureSymlink(filePath, filepath.Join(errorDumpDir, errorDumpLastFile)); err != nil {
lastFilePath := filepath.Join(errorDumpDir, errorDumpLastFile)
if err := ensureSymlink(filePath, lastFilePath); err != nil {
fmt.Printf("failed to create symlink: %v\n", err)
return
}