diff options
| author | Breno Leitao <leitao@debian.org> | 2023-10-16 06:47:39 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-10-19 14:05:28 -0600 |
| commit | a615f67e1a426f35366b8398c11f31c148e7df48 (patch) | |
| tree | 4e4f6688f2ea831ce503599d3880f73d60e026db /net/socket.c | |
| parent | 6ce4a93dbb5bd93bc2bdf14da63f9360a4dcd6a1 (diff) | |
bpf: Add sockptr support for getsockopt
The whole network stack uses sockptr, and while it doesn't move to
something more modern, let's use sockptr in getsockptr BPF hooks, so, it
could be used by other callers.
The main motivation for this change is to use it in the io_uring
{g,s}etsockopt(), which will use a userspace pointer for *optval, but, a
kernel value for optlen.
Link: https://lore.kernel.org/all/ZSArfLaaGcfd8LH8@gmail.com/
Signed-off-by: Breno Leitao <leitao@debian.org>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/r/20231016134750.1381153-2-leitao@debian.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'net/socket.c')
| -rw-r--r-- | net/socket.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/net/socket.c b/net/socket.c index c8b08b32f097..82cd6890a4f0 100644 --- a/net/socket.c +++ b/net/socket.c @@ -2356,8 +2356,9 @@ int __sys_getsockopt(int fd, int level, int optname, char __user *optval, if (!in_compat_syscall()) err = BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock->sk, level, optname, - optval, optlen, max_optlen, - err); + USER_SOCKPTR(optval), + USER_SOCKPTR(optlen), + max_optlen, err); out_put: fput_light(sock->file, fput_needed); return err; |