mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 07:20:11 +00:00
13c51549e2
The recvmsg handling is more complicated because it requires check the returned kernel control message and make some convertions. For !__ASSUME_TIME64_SYSCALLS it converts the first 32-bit time SO_TIMESTAMP or SO_TIMESTAMPNS and appends it to the control buffer if has extra space or returns MSG_CTRUNC otherwise. The 32-bit time field is kept as-is. Calls with __TIMESIZE=32 will see the converted 64-bit time control messages as spurious control message of unknown type. Calls with __TIMESIZE=64 running on pre-time64 kernels will see the original message as a spurious control ones of unknown typ while running on kernel with native 64-bit time support will only see the time64 version of the control message. Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15 kernel). Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
36 lines
1.3 KiB
C
36 lines
1.3 KiB
C
/* Compat socket constants used in 64-bit compat code.
|
|
Copyright (C) 2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _SOCKET_CONSTANTS_TIME64_H
|
|
#define _SOCKET_CONSTANTS_TIME64_H
|
|
|
|
/* The compat code requires the SO_* constants used for both 32 and 64-bit
|
|
time_t, however they were only added on v5.1 kernel. */
|
|
|
|
#define COMPAT_SO_RCVTIMEO_OLD 18
|
|
#define COMPAT_SO_SNDTIMEO_OLD 19
|
|
#define COMPAT_SO_RCVTIMEO_NEW 66
|
|
#define COMPAT_SO_SNDTIMEO_NEW 67
|
|
|
|
#define COMPAT_SO_TIMESTAMP_OLD 29
|
|
#define COMPAT_SO_TIMESTAMPNS_OLD 35
|
|
#define COMPAT_SO_TIMESTAMP_NEW 63
|
|
#define COMPAT_SO_TIMESTAMPNS_NEW 64
|
|
|
|
#endif
|