On Tue, Mar 03, 2015 at 07:23:28PM +0100, Gabriel Laskar wrote: > There is still an issue with ioctl request names when using strace on > Binder calls. Some binder calls have 2 possible sizes, depending of being > with the 32-bit api or the 64-bit one. > > In <linux/android/binder.h>, there is a #ifdef BINDER_IPC_32BIT that > control the size of pointer values in the structures. > > In 64bit mode, we have only : > > ioctl(-1, BC_REQUEST_DEATH_NOTIFICATION, 0); > ioctl(-1, BC_CLEAR_DEATH_NOTIFICATION, 0); > > that respond : > > ioctl(-1, _IOC(_IOC_WRITE, 0x63, 0x0e, 0x10), 0) = -1 EBADF (Bad file > descriptor) > ioctl(-1, _IOC(_IOC_WRITE, 0x63, 0x0f, 0x10), 0) = -1 EBADF (Bad file > descriptor) > > and when asking for 32bit binder (BINDER_IPC_32BIT), lots of ioctls are > failing :
Unfortunately, <linux/android/binder.h> doesn't say which of binder ioctls are BINDER_IPC_32BIT. How could one automatically distinguish them? -- ldv
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