[hurd,commited] hurd: Do not take any flag from the CMSG_DATA
Samuel Thibault
samuel.thibault@ens-lyon.org
Mon Apr 24 22:17:37 GMT 2023
As fixed in 0822e3552a78 ("hurd: Don't pass FD_CLOEXEC in CMSG_DATA"),
senders currently don't have any flag to pass. We shouldn't blindly take
random flags that senders could be erroneously giving us.
---
sysdeps/mach/hurd/recvmsg.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/sysdeps/mach/hurd/recvmsg.c b/sysdeps/mach/hurd/recvmsg.c
index e06b0fe3ba..4254dca627 100644
--- a/sysdeps/mach/hurd/recvmsg.c
+++ b/sysdeps/mach/hurd/recvmsg.c
@@ -201,8 +201,10 @@ __libc_recvmsg (int fd, struct msghdr *message, int flags)
err = reauthenticate (ports[i], &newports[newfds]);
if (err)
goto cleanup;
+ /* We do not currently take any flag from the sender. */
fds[j] = opened_fds[newfds] = _hurd_intern_fd (newports[newfds],
- fds[j] | fd_flags,
+ (fds[j] & 0)
+ | fd_flags,
0);
if (fds[j] == -1)
{
--
2.39.2
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