Thanks!
As a note for self, I diffed snapd 2.61.2 and 2.62 and found in
cmd/snap-update-ns/user.go:
--->
+func isPlausibleHome(path string) error {
+ if path == "" {
+ return fmt.Errorf("cannot allow empty path")
+ }
+ if path != filepath.Clean(path) {
+ return fmt.Errorf("cannot allow unclean path")
+ }
+ if !filepath.IsAbs(path) {
+ return fmt.Errorf("cannot allow relative path")
+ }
+ const openFlags = syscall.O_NOFOLLOW | syscall.O_CLOEXEC |
syscall.O_DIRECTORY
+ fd, err := sysOpen(path, openFlags, 0)
+ if err != nil {
+ return err
+ }
+ sysClose(fd)
+ return nil
+}
<---
--->
+ if err := isPlausibleHome(realHome); err != nil {
+ realHomeError = fmt.Errorf("cannot use invalid home directory
%q: %v", realHome, err)
<---
It remains to be ascertained whether this lack of permission always
existed but didn't cause the launch of the snap to fail.
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https://bugs.launchpad.net/bugs/2061981
Title:
chromium fails to start with non-standard home directory
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