From a194625ef31f0c33afae9b53e2dfaa17c2517606 Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Tue, 9 Aug 2016 01:42:50 +0200 Subject: Fix recvmsg returning SIGLOST on PF_LOCAL sockets when msg_name is not NULL. * sysdeps/mach/hurd/recvmsg.c (__libc_recvmsg): Cope with aport being MACH_PORT_NULL. --- ChangeLog | 6 ++++++ sysdeps/mach/hurd/recvmsg.c | 4 +++- 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/ChangeLog b/ChangeLog index d244dccfbe..d8ba9cd57d 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2016-08-06 Christian Seiler + + [BZ #20444] + * sysdeps/mach/hurd/recvmsg.c (__libc_recvmsg): Cope with aport being + MACH_PORT_NULL. + 2016-08-05 Aurelien Jarno * math/s_fdim.c: Avoid alias renamed. diff --git a/sysdeps/mach/hurd/recvmsg.c b/sysdeps/mach/hurd/recvmsg.c index 770a42e05e..51cfbd7cdb 100644 --- a/sysdeps/mach/hurd/recvmsg.c +++ b/sysdeps/mach/hurd/recvmsg.c @@ -64,7 +64,7 @@ __libc_recvmsg (int fd, struct msghdr *message, int flags) &message->msg_flags, amount))) return __hurd_sockfail (fd, flags, err); - if (message->msg_name != NULL) + if (message->msg_name != NULL && aport != MACH_PORT_NULL) { char *buf = message->msg_name; mach_msg_type_number_t buflen = message->msg_namelen; @@ -98,6 +98,8 @@ __libc_recvmsg (int fd, struct msghdr *message, int flags) if (buflen > 0) ((struct sockaddr *) message->msg_name)->sa_family = type; } + else if (message->msg_name != NULL) + message->msg_namelen = 0; __mach_port_deallocate (__mach_task_self (), aport); -- cgit v1.2.3