Thank you. To confirm, is this the only way? On Thu, Aug 27, 2020 at 10:13 PM Abhishek Vijeev <abhishek.vijeev@xxxxxxxxx> wrote: > > Thank you. > > To confirm, is this the only way? > > On Thu, Aug 27, 2020, 9:54 PM David Ahern <dsahern@xxxxxxxxx> wrote: >> >> On 8/27/20 9:59 AM, Abhishek Vijeev wrote: >> > Hi, >> > >> > From a user-space process, given a BPF map file descriptor, is it >> > possible to determine whether the map is frozen (with BPF_MAP_FREEZE)? >> > >> > As far as I'm aware, the only way to retrieve information about BPF >> > maps from file descriptors is to use BPF_OBJ_GET_INFO_BY_FD. However, >> > I do not see a field which tells me whether a map is frozen (or not) >> > in struct bpf_map_info >> > (https://github.com/torvalds/linux/blob/master/include/uapi/linux/bpf.h#L4035). >> > Kindly correct me if I'm wrong. >> > >> > Thank you, >> > Abhishek Vijeev. >> > >> >> fdinfo for the file has the frozen status (cat /proc/$pid/fdinfo/$fd)
