[v3,04/24] linux: Add fallback for 64-bit time_t SO_{RCV, SND}TIMEO
Checks
Commit Message
The constant values will be changed for __TIMESIZE=64, so binaries built
with 64-bit time support might fail to work properly on old kernels.
Both {get,set}sockopt will retry the syscall with the old constant
values and the timeout value adjusted when kernel returns ENOTPROTOPT.
It also adds an internal only SO_{RCV,SND}TIMEO where
COMPAT_SO_{RCV,SND}TIMEO_OLD indicates pre 32 bit time support and
COMPAT_SO_{RCV,SND}TIMEO_NEW indicates time64 support. It allows to
refer to constant independently of the time_t ABI and kernel version
used.
Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
kernel).
---
sysdeps/unix/sysv/linux/getsockopt.c | 70 ++++++++++++++++--
.../sysv/linux/hppa/socket-constants-time64.h | 30 ++++++++
.../sysv/linux/mips/socket-constants-time64.h | 30 ++++++++
.../linux/powerpc/socket-constants-time64.h | 30 ++++++++
sysdeps/unix/sysv/linux/setsockopt.c | 71 ++++++++++++++++---
.../unix/sysv/linux/socket-constants-time64.h | 30 ++++++++
.../linux/sparc/socket-constants-time64.h | 30 ++++++++
7 files changed, 276 insertions(+), 15 deletions(-)
create mode 100644 sysdeps/unix/sysv/linux/hppa/socket-constants-time64.h
create mode 100644 sysdeps/unix/sysv/linux/mips/socket-constants-time64.h
create mode 100644 sysdeps/unix/sysv/linux/powerpc/socket-constants-time64.h
create mode 100644 sysdeps/unix/sysv/linux/socket-constants-time64.h
create mode 100644 sysdeps/unix/sysv/linux/sparc/socket-constants-time64.h
Comments
On 6/7/21 4:35 PM, Adhemerval Zanella wrote:
> The constant values will be changed for __TIMESIZE=64, so binaries built
> with 64-bit time support might fail to work properly on old kernels.
> Both {get,set}sockopt will retry the syscall with the old constant
> values and the timeout value adjusted when kernel returns ENOTPROTOPT.
>
> It also adds an internal only SO_{RCV,SND}TIMEO where
> COMPAT_SO_{RCV,SND}TIMEO_OLD indicates pre 32 bit time support and
> COMPAT_SO_{RCV,SND}TIMEO_NEW indicates time64 support. It allows to
> refer to constant independently of the time_t ABI and kernel version
> used.
No regressions on x86_64 and i686 and reviewed resulting ABI for correctness.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: carlos O'Donell <carlos@redhat.com>
> Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
> kernel).
> ---
> sysdeps/unix/sysv/linux/getsockopt.c | 70 ++++++++++++++++--
> .../sysv/linux/hppa/socket-constants-time64.h | 30 ++++++++
> .../sysv/linux/mips/socket-constants-time64.h | 30 ++++++++
> .../linux/powerpc/socket-constants-time64.h | 30 ++++++++
> sysdeps/unix/sysv/linux/setsockopt.c | 71 ++++++++++++++++---
> .../unix/sysv/linux/socket-constants-time64.h | 30 ++++++++
> .../linux/sparc/socket-constants-time64.h | 30 ++++++++
> 7 files changed, 276 insertions(+), 15 deletions(-)
> create mode 100644 sysdeps/unix/sysv/linux/hppa/socket-constants-time64.h
> create mode 100644 sysdeps/unix/sysv/linux/mips/socket-constants-time64.h
> create mode 100644 sysdeps/unix/sysv/linux/powerpc/socket-constants-time64.h
> create mode 100644 sysdeps/unix/sysv/linux/socket-constants-time64.h
> create mode 100644 sysdeps/unix/sysv/linux/sparc/socket-constants-time64.h
>
> diff --git a/sysdeps/unix/sysv/linux/getsockopt.c b/sysdeps/unix/sysv/linux/getsockopt.c
> index 76ee8a94d6..688a7de087 100644
> --- a/sysdeps/unix/sysv/linux/getsockopt.c
> +++ b/sysdeps/unix/sysv/linux/getsockopt.c
> @@ -15,16 +15,15 @@
> License along with the GNU C Library; if not, see
> <https://www.gnu.org/licenses/>. */
>
> -#include <errno.h>
> -#include <signal.h>
> #include <sys/socket.h>
> -
> +#include <time.h>
> +#include <sysdep.h>
> #include <socketcall.h>
> -#include <kernel-features.h>
> -#include <sys/syscall.h>
> +#include <socket-constants-time64.h>
>
> -int
> -__getsockopt (int fd, int level, int optname, void *optval, socklen_t *len)
> +static int
> +getsockopt_syscall (int fd, int level, int optname, void *optval,
> + socklen_t *len)
> {
> #ifdef __ASSUME_GETSOCKOPT_SYSCALL
> return INLINE_SYSCALL (getsockopt, 5, fd, level, optname, optval, len);
> @@ -32,4 +31,61 @@ __getsockopt (int fd, int level, int optname, void *optval, socklen_t *len)
> return SOCKETCALL (getsockopt, fd, level, optname, optval, len);
> #endif
> }
> +
> +#ifndef __ASSUME_TIME64_SYSCALLS
> +static int
> +getsockopt32 (int fd, int level, int optname, void *optval,
> + socklen_t *len)
> +{
> + int r = -1;
> +
> + if (level != SOL_SOCKET)
> + return r;
> +
> + switch (optname)
> + {
> + case COMPAT_SO_RCVTIMEO_NEW:
> + case COMPAT_SO_SNDTIMEO_NEW:
> + {
> + if (optname == COMPAT_SO_RCVTIMEO_NEW)
> + optname = COMPAT_SO_RCVTIMEO_OLD;
> + if (optname == COMPAT_SO_SNDTIMEO_NEW)
> + optname = COMPAT_SO_SNDTIMEO_OLD;
> +
> + struct __timeval32 tv32;
> + r = getsockopt_syscall (fd, level, optname, &tv32,
> + (socklen_t[]) { sizeof tv32 });
> + if (r < 0)
> + break;
> +
> + /* POSIX states that if the size of the option value is greater than
> + then option length, the option value argument shall be silently
> + truncated. */
OK.
> + if (*len >= sizeof (struct __timeval64))
> + {
> + struct __timeval64 *tv64 = (struct __timeval64 *) optval;
> + *tv64 = valid_timeval32_to_timeval64 (tv32);
> + *len = sizeof (*tv64);
> + }
> + else
> + memcpy (optval, &tv32, sizeof tv32);
OK. Truncate.
> + }
> + }
> +
> + return r;
> +}
> +#endif
> +
> +int
> +__getsockopt (int fd, int level, int optname, void *optval, socklen_t *len)
> +{
> + int r = getsockopt_syscall (fd, level, optname, optval, len);
> +
> +#ifndef __ASSUME_TIME64_SYSCALLS
> + if (r == -1 && errno == ENOPROTOOPT)
> + r = getsockopt32 (fd, level, optname, optval, len);
> +#endif
> +
> + return r;
> +}
> weak_alias (__getsockopt, getsockopt)
> diff --git a/sysdeps/unix/sysv/linux/hppa/socket-constants-time64.h b/sysdeps/unix/sysv/linux/hppa/socket-constants-time64.h
> new file mode 100644
> index 0000000000..9fe7576aaa
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/hppa/socket-constants-time64.h
> @@ -0,0 +1,30 @@
> +/* 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 4102
> +#define COMPAT_SO_SNDTIMEO_OLD 4101
> +#define COMPAT_SO_RCVTIMEO_NEW 16448
> +#define COMPAT_SO_SNDTIMEO_NEW 16449
> +
> +#endif
> diff --git a/sysdeps/unix/sysv/linux/mips/socket-constants-time64.h b/sysdeps/unix/sysv/linux/mips/socket-constants-time64.h
> new file mode 100644
> index 0000000000..1252a8a23b
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/mips/socket-constants-time64.h
> @@ -0,0 +1,30 @@
> +/* 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 4102
> +#define COMPAT_SO_SNDTIMEO_OLD 4101
> +#define COMPAT_SO_RCVTIMEO_NEW 66
> +#define COMPAT_SO_SNDTIMEO_NEW 67
> +
> +#endif
> diff --git a/sysdeps/unix/sysv/linux/powerpc/socket-constants-time64.h b/sysdeps/unix/sysv/linux/powerpc/socket-constants-time64.h
> new file mode 100644
> index 0000000000..26e8b710ab
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/powerpc/socket-constants-time64.h
> @@ -0,0 +1,30 @@
> +/* 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
> +
> +#endif
> diff --git a/sysdeps/unix/sysv/linux/setsockopt.c b/sysdeps/unix/sysv/linux/setsockopt.c
> index 12fd7bdcde..6505202265 100644
> --- a/sysdeps/unix/sysv/linux/setsockopt.c
> +++ b/sysdeps/unix/sysv/linux/setsockopt.c
> @@ -15,21 +15,76 @@
> License along with the GNU C Library; if not, see
> <https://www.gnu.org/licenses/>. */
>
> -#include <errno.h>
> -#include <signal.h>
> #include <sys/socket.h>
> -
> +#include <time.h>
> +#include <sysdep.h>
> #include <socketcall.h>
> -#include <kernel-features.h>
> -#include <sys/syscall.h>
> +#include <socket-constants-time64.h>
>
> -int
> -setsockopt (int fd, int level, int optname, const void *optval, socklen_t len)
> +static int
> +setsockopt_syscall (int fd, int level, int optname, const void *optval,
> + socklen_t len)
> {
> #ifdef __ASSUME_SETSOCKOPT_SYSCALL
> - return INLINE_SYSCALL (setsockopt, 5, fd, level, optname, optval, len);
> + return INLINE_SYSCALL_CALL (setsockopt, fd, level, optname, optval, len);
> #else
> return SOCKETCALL (setsockopt, fd, level, optname, optval, len);
> #endif
> }
> +
> +#ifndef __ASSUME_TIME64_SYSCALLS
> +static int
> +setsockopt32 (int fd, int level, int optname, const void *optval,
> + socklen_t len)
> +{
> + int r = -1;
> +
> + if (level != SOL_SOCKET)
> + return r;
> +
> + switch (optname)
> + {
> + case COMPAT_SO_RCVTIMEO_NEW:
> + case COMPAT_SO_SNDTIMEO_NEW:
> + {
> + if (len < sizeof (struct __timeval64))
> + {
> + __set_errno (EINVAL);
> + break;
> + }
> +
> + struct __timeval64 *tv64 = (struct __timeval64 *) optval;
> + if (! in_time_t_range (tv64->tv_sec))
> + {
> + __set_errno (EOVERFLOW);
> + break;
> + }
> +
> + if (optname == COMPAT_SO_RCVTIMEO_NEW)
> + optname = COMPAT_SO_RCVTIMEO_OLD;
> + if (optname == COMPAT_SO_SNDTIMEO_NEW)
> + optname = COMPAT_SO_SNDTIMEO_OLD;
> +
> + struct __timeval32 tv32 = valid_timeval64_to_timeval32 (*tv64);
> +
> + r = setsockopt_syscall (fd, level, optname, &tv32, sizeof (tv32));
> + }
> + }
> +
> + return r;
> +}
> +#endif
> +
> +int
> +setsockopt (int fd, int level, int optname, const void *optval, socklen_t len)
> +{
> + int r = setsockopt_syscall (fd, level, optname, optval, len);
> +
> +#ifndef __ASSUME_TIME64_SYSCALLS
> + if (r == -1 && errno == ENOPROTOOPT)
> + r = setsockopt32 (fd, level, optname, optval, len);
> +#endif
> +
> + return r;
> +}
> weak_alias (setsockopt, __setsockopt)
> diff --git a/sysdeps/unix/sysv/linux/socket-constants-time64.h b/sysdeps/unix/sysv/linux/socket-constants-time64.h
> new file mode 100644
> index 0000000000..d09c39d6c2
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/socket-constants-time64.h
> @@ -0,0 +1,30 @@
> +/* 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 20
> +#define COMPAT_SO_SNDTIMEO_OLD 21
> +#define COMPAT_SO_RCVTIMEO_NEW 66
> +#define COMPAT_SO_SNDTIMEO_NEW 67
> +
> +#endif
> diff --git a/sysdeps/unix/sysv/linux/sparc/socket-constants-time64.h b/sysdeps/unix/sysv/linux/sparc/socket-constants-time64.h
> new file mode 100644
> index 0000000000..f4668db537
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/sparc/socket-constants-time64.h
> @@ -0,0 +1,30 @@
> +/* 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 8192
> +#define COMPAT_SO_SNDTIMEO_OLD 16384
> +#define COMPAT_SO_RCVTIMEO_NEW 68
> +#define COMPAT_SO_SNDTIMEO_NEW 69
> +
> +#endif
>
@@ -15,16 +15,15 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
-#include <errno.h>
-#include <signal.h>
#include <sys/socket.h>
-
+#include <time.h>
+#include <sysdep.h>
#include <socketcall.h>
-#include <kernel-features.h>
-#include <sys/syscall.h>
+#include <socket-constants-time64.h>
-int
-__getsockopt (int fd, int level, int optname, void *optval, socklen_t *len)
+static int
+getsockopt_syscall (int fd, int level, int optname, void *optval,
+ socklen_t *len)
{
#ifdef __ASSUME_GETSOCKOPT_SYSCALL
return INLINE_SYSCALL (getsockopt, 5, fd, level, optname, optval, len);
@@ -32,4 +31,61 @@ __getsockopt (int fd, int level, int optname, void *optval, socklen_t *len)
return SOCKETCALL (getsockopt, fd, level, optname, optval, len);
#endif
}
+
+#ifndef __ASSUME_TIME64_SYSCALLS
+static int
+getsockopt32 (int fd, int level, int optname, void *optval,
+ socklen_t *len)
+{
+ int r = -1;
+
+ if (level != SOL_SOCKET)
+ return r;
+
+ switch (optname)
+ {
+ case COMPAT_SO_RCVTIMEO_NEW:
+ case COMPAT_SO_SNDTIMEO_NEW:
+ {
+ if (optname == COMPAT_SO_RCVTIMEO_NEW)
+ optname = COMPAT_SO_RCVTIMEO_OLD;
+ if (optname == COMPAT_SO_SNDTIMEO_NEW)
+ optname = COMPAT_SO_SNDTIMEO_OLD;
+
+ struct __timeval32 tv32;
+ r = getsockopt_syscall (fd, level, optname, &tv32,
+ (socklen_t[]) { sizeof tv32 });
+ if (r < 0)
+ break;
+
+ /* POSIX states that if the size of the option value is greater than
+ then option length, the option value argument shall be silently
+ truncated. */
+ if (*len >= sizeof (struct __timeval64))
+ {
+ struct __timeval64 *tv64 = (struct __timeval64 *) optval;
+ *tv64 = valid_timeval32_to_timeval64 (tv32);
+ *len = sizeof (*tv64);
+ }
+ else
+ memcpy (optval, &tv32, sizeof tv32);
+ }
+ }
+
+ return r;
+}
+#endif
+
+int
+__getsockopt (int fd, int level, int optname, void *optval, socklen_t *len)
+{
+ int r = getsockopt_syscall (fd, level, optname, optval, len);
+
+#ifndef __ASSUME_TIME64_SYSCALLS
+ if (r == -1 && errno == ENOPROTOOPT)
+ r = getsockopt32 (fd, level, optname, optval, len);
+#endif
+
+ return r;
+}
weak_alias (__getsockopt, getsockopt)
new file mode 100644
@@ -0,0 +1,30 @@
+/* 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 4102
+#define COMPAT_SO_SNDTIMEO_OLD 4101
+#define COMPAT_SO_RCVTIMEO_NEW 16448
+#define COMPAT_SO_SNDTIMEO_NEW 16449
+
+#endif
new file mode 100644
@@ -0,0 +1,30 @@
+/* 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 4102
+#define COMPAT_SO_SNDTIMEO_OLD 4101
+#define COMPAT_SO_RCVTIMEO_NEW 66
+#define COMPAT_SO_SNDTIMEO_NEW 67
+
+#endif
new file mode 100644
@@ -0,0 +1,30 @@
+/* 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
+
+#endif
@@ -15,21 +15,76 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
-#include <errno.h>
-#include <signal.h>
#include <sys/socket.h>
-
+#include <time.h>
+#include <sysdep.h>
#include <socketcall.h>
-#include <kernel-features.h>
-#include <sys/syscall.h>
+#include <socket-constants-time64.h>
-int
-setsockopt (int fd, int level, int optname, const void *optval, socklen_t len)
+static int
+setsockopt_syscall (int fd, int level, int optname, const void *optval,
+ socklen_t len)
{
#ifdef __ASSUME_SETSOCKOPT_SYSCALL
- return INLINE_SYSCALL (setsockopt, 5, fd, level, optname, optval, len);
+ return INLINE_SYSCALL_CALL (setsockopt, fd, level, optname, optval, len);
#else
return SOCKETCALL (setsockopt, fd, level, optname, optval, len);
#endif
}
+
+#ifndef __ASSUME_TIME64_SYSCALLS
+static int
+setsockopt32 (int fd, int level, int optname, const void *optval,
+ socklen_t len)
+{
+ int r = -1;
+
+ if (level != SOL_SOCKET)
+ return r;
+
+ switch (optname)
+ {
+ case COMPAT_SO_RCVTIMEO_NEW:
+ case COMPAT_SO_SNDTIMEO_NEW:
+ {
+ if (len < sizeof (struct __timeval64))
+ {
+ __set_errno (EINVAL);
+ break;
+ }
+
+ struct __timeval64 *tv64 = (struct __timeval64 *) optval;
+ if (! in_time_t_range (tv64->tv_sec))
+ {
+ __set_errno (EOVERFLOW);
+ break;
+ }
+
+ if (optname == COMPAT_SO_RCVTIMEO_NEW)
+ optname = COMPAT_SO_RCVTIMEO_OLD;
+ if (optname == COMPAT_SO_SNDTIMEO_NEW)
+ optname = COMPAT_SO_SNDTIMEO_OLD;
+
+ struct __timeval32 tv32 = valid_timeval64_to_timeval32 (*tv64);
+
+ r = setsockopt_syscall (fd, level, optname, &tv32, sizeof (tv32));
+ }
+ }
+
+ return r;
+}
+#endif
+
+int
+setsockopt (int fd, int level, int optname, const void *optval, socklen_t len)
+{
+ int r = setsockopt_syscall (fd, level, optname, optval, len);
+
+#ifndef __ASSUME_TIME64_SYSCALLS
+ if (r == -1 && errno == ENOPROTOOPT)
+ r = setsockopt32 (fd, level, optname, optval, len);
+#endif
+
+ return r;
+}
weak_alias (setsockopt, __setsockopt)
new file mode 100644
@@ -0,0 +1,30 @@
+/* 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 20
+#define COMPAT_SO_SNDTIMEO_OLD 21
+#define COMPAT_SO_RCVTIMEO_NEW 66
+#define COMPAT_SO_SNDTIMEO_NEW 67
+
+#endif
new file mode 100644
@@ -0,0 +1,30 @@
+/* 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 8192
+#define COMPAT_SO_SNDTIMEO_OLD 16384
+#define COMPAT_SO_RCVTIMEO_NEW 68
+#define COMPAT_SO_SNDTIMEO_NEW 69
+
+#endif