Remove option to panic gofer

Gofer panics are suppressed by p9 server and an error
is returned to the caller, making it effectively the
same as returning EROFS.

PiperOrigin-RevId: 332282959

2 files changed, 0 insertions, 26 deletions

diff --git a/runsc/fsgofer/fsgofer.go b/runsc/fsgofer/fsgofer.go
index 4268d97a1..0b628c8ce 100644
--- a/runsc/fsgofer/fsgofer.go
+++ b/runsc/fsgofer/fsgofer.go
@@ -1181,9 +1181,6 @@ func extractErrno(err error) unix.Errno {
 
 func (l *localFile) checkROMount() error {
 	if conf := l.attachPoint.conf; conf.ROMount {
-		if conf.PanicOnWrite {
-			panic("attempt to write to RO mount")
-		}
 		return unix.EROFS
 	}
 	return nil
diff --git a/runsc/fsgofer/fsgofer_test.go b/runsc/fsgofer/fsgofer_test.go
index 0e4945b3d..a84206686 100644
--- a/runsc/fsgofer/fsgofer_test.go
+++ b/runsc/fsgofer/fsgofer_test.go
@@ -553,29 +553,6 @@ func TestROMountChecks(t *testing.T) {
 	})
 }
 
-func TestROMountPanics(t *testing.T) {
-	conf := Config{ROMount: true, PanicOnWrite: true}
-	uid := p9.UID(os.Getuid())
-	gid := p9.GID(os.Getgid())
-
-	runCustom(t, allTypes, []Config{conf}, func(t *testing.T, s state) {
-		if s.fileType != unix.S_IFLNK {
-			assertPanic(t, func() { s.file.Open(p9.WriteOnly) })
-		}
-		assertPanic(t, func() { s.file.Create("some_file", p9.ReadWrite, 0777, uid, gid) })
-		assertPanic(t, func() { s.file.Mkdir("some_dir", 0777, uid, gid) })
-		assertPanic(t, func() { s.file.RenameAt("some_file", s.file, "other_file") })
-		assertPanic(t, func() { s.file.Symlink("some_place", "some_symlink", uid, gid) })
-		assertPanic(t, func() { s.file.UnlinkAt("some_file", 0) })
-		assertPanic(t, func() { s.file.Link(s.file, "some_link") })
-		assertPanic(t, func() { s.file.Mknod("some-nod", 0777, 1, 2, uid, gid) })
-
-		valid := p9.SetAttrMask{Size: true}
-		attr := p9.SetAttr{Size: 0}
-		assertPanic(t, func() { s.file.SetAttr(valid, attr) })
-	})
-}
-
 func TestWalkNotFound(t *testing.T) {
 	runCustom(t, []uint32{unix.S_IFDIR}, allConfs, func(t *testing.T, s state) {
 		if _, _, err := s.file.Walk([]string{"nobody-here"}); err != unix.ENOENT {