diff options
Diffstat (limited to 'cmds/servicemanager/binder.c')
| -rw-r--r-- | cmds/servicemanager/binder.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/cmds/servicemanager/binder.c b/cmds/servicemanager/binder.c index 43cb7d3..7fdd841 100644 --- a/cmds/servicemanager/binder.c +++ b/cmds/servicemanager/binder.c @@ -94,6 +94,7 @@ struct binder_state struct binder_state *binder_open(unsigned mapsize) { struct binder_state *bs; + struct binder_version vers; bs = malloc(sizeof(*bs)); if (!bs) { @@ -108,6 +109,12 @@ struct binder_state *binder_open(unsigned mapsize) goto fail_open; } + if ((ioctl(bs->fd, BINDER_VERSION, &vers) == -1) || + (vers.protocol_version != BINDER_CURRENT_PROTOCOL_VERSION)) { + fprintf(stderr, "binder: driver version differs from user space\n"); + goto fail_open; + } + bs->mapsize = mapsize; bs->mapped = mmap(NULL, mapsize, PROT_READ, MAP_PRIVATE, bs->fd, 0); if (bs->mapped == MAP_FAILED) { @@ -116,8 +123,6 @@ struct binder_state *binder_open(unsigned mapsize) goto fail_map; } - /* TODO: check version */ - return bs; fail_map: |