network: recvmmsg and sendmmsg standard compliance (BZ#16919)
POSIX specifies that both msghdr::msg_iovlen and msghdr::msg_controllen to be of size int and socklen_t respectively, however Linux implements it as a size_t. So for 64-bits architecture where sizeof of size_t is larger than socklen_t, both sendmmsg and recvmmsg need to adjust the mmsghdr::msg_hdr internal fields before issuing the syscall itself. This patch fixes it by operating on the padding if it the case. For recvmmsg, the most straightfoward case, only zero padding the fields is suffice. However, for sendmmsg, where adjusting the buffer is out of the contract (since it may point to a read-only data), the function is rewritten to use sendmsg instead (which from previous patch allocates a temporary msghdr to operate on). Also for 64-bit ports that requires it, a new recvmmsg and sendmmsg compat version is created (which uses size_t for both cmsghdr::cmsg_len and internal Tested on x86_64, i686, aarch64, armhf, and powerpc64le. * sysdeps/unix/sysv/linux/Makefile [$(subdir) = socket] (sysdep_routines): Add oldrecvmmsg and oldsendmmsg. * sysdeps/unix/sysv/linux/aarch64/libc.abilist: Add recvmmsg and sendmmsg. * sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise. * sysdeps/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/oldrecvmmsg.c: New file. * sysdeps/unix/sysv/linux/oldsendmmsg.c: Likewise. * sysdeps/unix/sysv/linux/recvmmsg.c (__recvmmsg): Adjust msghdr iovlen and controllen fields to adjust to POSIX specification. * sysdeps/unix/sysv/linux/sendmmsg.c (__sendmmsg): Likewise.
This commit is contained in:
Adhemerval Zanella
parent
af7f7c7ec8
commit
222c2d7f43
21
ChangeLog
21
ChangeLog
|
|
@ -1,5 +1,26 @@
|
|||
2016-05-25 Adhemerval Zanella <adhemerval.zanella@linaro.org>
|
||||
|
||||
* sysdeps/unix/sysv/linux/Makefile
|
||||
[$(subdir) = socket] (sysdep_routines): Add oldrecvmmsg and
|
||||
oldsendmmsg.
|
||||
* sysdeps/unix/sysv/linux/aarch64/libc.abilist: Add recvmmsg and
|
||||
sendmmsg.
|
||||
* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
|
||||
* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
|
||||
* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
|
||||
* sysdeps/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise.
|
||||
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise.
|
||||
* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
|
||||
* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
|
||||
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist:
|
||||
Likewise.
|
||||
* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
|
||||
* sysdeps/unix/sysv/linux/oldrecvmmsg.c: New file.
|
||||
* sysdeps/unix/sysv/linux/oldsendmmsg.c: Likewise.
|
||||
* sysdeps/unix/sysv/linux/recvmmsg.c (__recvmmsg): Adjust msghdr
|
||||
iovlen and controllen fields to adjust to POSIX specification.
|
||||
* sysdeps/unix/sysv/linux/sendmmsg.c (__sendmmsg): Likewise.
|
||||
|
||||
* conform/data/sys/socket.h-data (msghdr.msg_iovlen): Remove xfail-
|
||||
and change to correct expected type.
|
||||
(msghdr.msg_controllen): Likewise.
|
||||
|
|
|
|||
|
|
@ -124,7 +124,8 @@ ifeq ($(subdir),socket)
|
|||
sysdep_headers += net/if_ppp.h net/ppp-comp.h \
|
||||
net/ppp_defs.h net/if_arp.h net/route.h net/ethernet.h \
|
||||
net/if_slip.h net/if_packet.h net/if_shaper.h
|
||||
sysdep_routines += cmsg_nxthdr oldrecvmsg oldsendmsg
|
||||
sysdep_routines += cmsg_nxthdr oldrecvmsg oldsendmsg \
|
||||
oldrecvmmsg oldsendmmsg
|
||||
CFLAGS-recvmsg.c = -fexceptions -fasynchronous-unwind-tables
|
||||
CFLAGS-sendmsg.c = -fexceptions -fasynchronous-unwind-tables
|
||||
CFLAGS-oldrecvmsg.c = -fexceptions -fasynchronous-unwind-tables
|
||||
|
|
|
|||
|
|
@ -2088,5 +2088,7 @@ GLIBC_2.23 fts64_open F
|
|||
GLIBC_2.23 fts64_read F
|
||||
GLIBC_2.23 fts64_set F
|
||||
GLIBC_2.24 GLIBC_2.24 A
|
||||
GLIBC_2.24 recvmmsg F
|
||||
GLIBC_2.24 recvmsg F
|
||||
GLIBC_2.24 sendmmsg F
|
||||
GLIBC_2.24 sendmsg F
|
||||
|
|
|
|||
|
|
@ -1999,7 +1999,9 @@ GLIBC_2.23 fts64_open F
|
|||
GLIBC_2.23 fts64_read F
|
||||
GLIBC_2.23 fts64_set F
|
||||
GLIBC_2.24 GLIBC_2.24 A
|
||||
GLIBC_2.24 recvmmsg F
|
||||
GLIBC_2.24 recvmsg F
|
||||
GLIBC_2.24 sendmmsg F
|
||||
GLIBC_2.24 sendmsg F
|
||||
GLIBC_2.3 GLIBC_2.3 A
|
||||
GLIBC_2.3 __ctype_b_loc F
|
||||
|
|
|
|||
|
|
@ -1875,7 +1875,9 @@ GLIBC_2.23 fts64_open F
|
|||
GLIBC_2.23 fts64_read F
|
||||
GLIBC_2.23 fts64_set F
|
||||
GLIBC_2.24 GLIBC_2.24 A
|
||||
GLIBC_2.24 recvmmsg F
|
||||
GLIBC_2.24 recvmsg F
|
||||
GLIBC_2.24 sendmmsg F
|
||||
GLIBC_2.24 sendmsg F
|
||||
GLIBC_2.3 GLIBC_2.3 A
|
||||
GLIBC_2.3 __ctype_b_loc F
|
||||
|
|
|
|||
|
|
@ -1933,7 +1933,9 @@ GLIBC_2.23 fts64_open F
|
|||
GLIBC_2.23 fts64_read F
|
||||
GLIBC_2.23 fts64_set F
|
||||
GLIBC_2.24 GLIBC_2.24 A
|
||||
GLIBC_2.24 recvmmsg F
|
||||
GLIBC_2.24 recvmsg F
|
||||
GLIBC_2.24 sendmmsg F
|
||||
GLIBC_2.24 sendmsg F
|
||||
GLIBC_2.3 GLIBC_2.3 A
|
||||
GLIBC_2.3 __ctype_b_loc F
|
||||
|
|
|
|||
|
|
@ -0,0 +1,87 @@
|
|||
/* Compatibility version of recvmsg.
|
||||
Copyright (C) 2010-2016 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
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <sys/socket.h>
|
||||
#include <sysdep-cancel.h>
|
||||
#include <socketcall.h>
|
||||
#include <shlib-compat.h>
|
||||
|
||||
#if __WORDSIZE == 64
|
||||
# if SHLIB_COMPAT (libc, GLIBC_2_12, GLIBC_2_24)
|
||||
|
||||
/* Do not use the recvmmsg syscall on socketcall architectures unless
|
||||
it was added at the same time as the socketcall support or can be
|
||||
assumed to be present. */
|
||||
# if defined __ASSUME_SOCKETCALL \
|
||||
&& !defined __ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL \
|
||||
&& !defined __ASSUME_RECVMMSG_SYSCALL
|
||||
# undef __NR_recvmmsg
|
||||
# endif
|
||||
|
||||
int
|
||||
__old_recvmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen,
|
||||
int flags, struct timespec *tmo)
|
||||
{
|
||||
# ifdef __NR_recvmmsg
|
||||
return SYSCALL_CANCEL (recvmmsg, fd, vmessages, vlen, flags, tmo);
|
||||
# elif defined __NR_socketcall
|
||||
# ifdef __ASSUME_RECVMMSG_SOCKETCALL
|
||||
return SOCKETCALL_CANCEL (recvmmsg, fd, vmessages, vlen, flags, tmo);
|
||||
# else
|
||||
static int have_recvmmsg;
|
||||
if (__glibc_likely (have_recvmmsg >= 0))
|
||||
{
|
||||
int ret = SOCKETCALL_CANCEL (recvmmsg, fd, vmessages, vlen, flags,
|
||||
tmo);
|
||||
/* The kernel returns -EINVAL for unknown socket operations.
|
||||
We need to convert that error to an ENOSYS error. */
|
||||
if (__builtin_expect (ret < 0, 0)
|
||||
&& have_recvmmsg == 0
|
||||
&& errno == EINVAL)
|
||||
{
|
||||
/* Try another call, this time with an invalid file
|
||||
descriptor and all other parameters cleared. This call
|
||||
will not cause any harm and it will return
|
||||
immediately. */
|
||||
ret = SOCKETCALL_CANCEL (invalid, -1);
|
||||
if (errno == EINVAL)
|
||||
{
|
||||
have_recvmmsg = -1;
|
||||
__set_errno (ENOSYS);
|
||||
}
|
||||
else
|
||||
{
|
||||
have_recvmmsg = 1;
|
||||
__set_errno (EINVAL);
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
__set_errno (ENOSYS);
|
||||
return -1;
|
||||
# endif /* __ASSUME_RECVMMSG_SOCKETCALL */
|
||||
# else
|
||||
__set_errno (ENOSYS);
|
||||
return -1;
|
||||
# endif
|
||||
}
|
||||
compat_symbol (libc, __old_recvmmsg, recvmmsg, GLIBC_2_12);
|
||||
|
||||
# endif /* SHLIB_COMPAT (libc, GLIBC_2_12, GLIBC_2_24) */
|
||||
#endif /* __WORDSIZE == 64 */
|
||||
|
|
@ -0,0 +1,76 @@
|
|||
/* Compatibility implementation of sendmmsg.
|
||||
Copyright (C) 2016 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
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <sys/socket.h>
|
||||
#include <sysdep-cancel.h>
|
||||
#include <socketcall.h>
|
||||
#include <shlib-compat.h>
|
||||
|
||||
#if __WORDSIZE == 64
|
||||
# if SHLIB_COMPAT (libc, GLIBC_2_14, GLIBC_2_24)
|
||||
|
||||
int
|
||||
__old_sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen,
|
||||
int flags)
|
||||
{
|
||||
# ifdef __NR_sendmmsg
|
||||
return SYSCALL_CANCEL (sendmmsg, fd, vmessages, vlen, flags);
|
||||
# elif defined __NR_socketcall
|
||||
# ifdef __ASSUME_SENDMMSG_SOCKETCALL
|
||||
return SOCKETCALL_CANCEL (sendmmsg, fd, vmessages, vlen, flags);
|
||||
# else
|
||||
static int have_sendmmsg;
|
||||
if (__glibc_likely (have_sendmmsg >= 0))
|
||||
{
|
||||
int ret = SOCKETCALL_CANCEL (sendmmsg, fd, vmessages, vlen, flags);
|
||||
/* The kernel returns -EINVAL for unknown socket operations.
|
||||
We need to convert that error to an ENOSYS error. */
|
||||
if (__builtin_expect (ret < 0, 0)
|
||||
&& have_sendmmsg == 0
|
||||
&& errno == EINVAL)
|
||||
{
|
||||
/* Try another call, this time with an invalid file
|
||||
descriptor and all other parameters cleared. This call
|
||||
will not cause any harm and it will return
|
||||
immediately. */
|
||||
ret = SOCKETCALL_CANCEL (invalid, -1);
|
||||
if (errno == EINVAL)
|
||||
{
|
||||
have_sendmmsg = -1;
|
||||
__set_errno (ENOSYS);
|
||||
}
|
||||
else
|
||||
{
|
||||
have_sendmmsg = 1;
|
||||
__set_errno (EINVAL);
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
__set_errno (ENOSYS);
|
||||
return -1;
|
||||
# endif /* __ASSUME_SENDMMSG_SOCKETCALL */
|
||||
# else /* defined __NR_socketcall */
|
||||
__set_errno (ENOSYS);
|
||||
return -1;
|
||||
# endif
|
||||
}
|
||||
compat_symbol (libc, __old_sendmmsg, sendmmsg, GLIBC_2_14);
|
||||
# endif /* SHLIB_COMPAT (libc, GLIBC_2_14, GLIBC_2_24) */
|
||||
#endif /* __WORDSIZE == 64 */
|
||||
|
|
@ -2176,5 +2176,7 @@ GLIBC_2.23 fts64_open F
|
|||
GLIBC_2.23 fts64_read F
|
||||
GLIBC_2.23 fts64_set F
|
||||
GLIBC_2.24 GLIBC_2.24 A
|
||||
GLIBC_2.24 recvmmsg F
|
||||
GLIBC_2.24 recvmsg F
|
||||
GLIBC_2.24 sendmmsg F
|
||||
GLIBC_2.24 sendmsg F
|
||||
|
|
|
|||
|
|
@ -90,7 +90,9 @@ GLIBC_2.23 fts64_open F
|
|||
GLIBC_2.23 fts64_read F
|
||||
GLIBC_2.23 fts64_set F
|
||||
GLIBC_2.24 GLIBC_2.24 A
|
||||
GLIBC_2.24 recvmmsg F
|
||||
GLIBC_2.24 recvmsg F
|
||||
GLIBC_2.24 sendmmsg F
|
||||
GLIBC_2.24 sendmsg F
|
||||
GLIBC_2.3 GLIBC_2.3 A
|
||||
GLIBC_2.3 _Exit F
|
||||
|
|
|
|||
|
|
@ -16,12 +16,10 @@
|
|||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <errno.h>
|
||||
#include <sys/socket.h>
|
||||
|
||||
#include <socketcall.h>
|
||||
#include <sysdep-cancel.h>
|
||||
#include <sys/syscall.h>
|
||||
#include <kernel-features.h>
|
||||
#include <shlib-compat.h>
|
||||
|
||||
/* Do not use the recvmmsg syscall on socketcall architectures unless
|
||||
it was added at the same time as the socketcall support or can be
|
||||
|
|
@ -32,31 +30,39 @@
|
|||
# undef __NR_recvmmsg
|
||||
#endif
|
||||
|
||||
#ifdef __NR_recvmmsg
|
||||
int
|
||||
recvmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags,
|
||||
struct timespec *tmo)
|
||||
static inline void
|
||||
adjust_mmsghdr (struct mmsghdr *vmessages, unsigned int vlen)
|
||||
{
|
||||
return SYSCALL_CANCEL (recvmmsg, fd, vmessages, vlen, flags, tmo);
|
||||
#if __WORDSIZE == 64
|
||||
/* POSIX specifies that both msghdr::msg_iovlen and msghdr::msg_controllen
|
||||
to be int and socklen_t respectively. However Linux defines it as
|
||||
both size_t. So for 64-bit it requires some adjustments by zeroing
|
||||
the pad fields. */
|
||||
struct mmsghdr *vmhdr = vmessages;
|
||||
for (unsigned int i = 0; i != 0; i--, vmhdr++)
|
||||
{
|
||||
vmhdr->msg_hdr.__glibc_reserved1 = 0;
|
||||
vmhdr->msg_hdr.__glibc_reserved2 = 0;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
#elif defined __NR_socketcall
|
||||
# include <socketcall.h>
|
||||
# ifdef __ASSUME_RECVMMSG_SOCKETCALL
|
||||
int
|
||||
recvmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags,
|
||||
struct timespec *tmo)
|
||||
{
|
||||
return SOCKETCALL_CANCEL (recvmmsg, fd, vmessages, vlen, flags, tmo);
|
||||
}
|
||||
# else
|
||||
static int have_recvmmsg;
|
||||
|
||||
int
|
||||
recvmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags,
|
||||
struct timespec *tmo)
|
||||
__recvmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen,
|
||||
int flags, struct timespec *tmo)
|
||||
{
|
||||
#ifdef __NR_recvmmsg
|
||||
adjust_mmsghdr (vmessages, vlen);
|
||||
return SYSCALL_CANCEL (recvmmsg, fd, vmessages, vlen, flags, tmo);
|
||||
#elif defined __NR_socketcall
|
||||
# ifdef __ASSUME_RECVMMSG_SOCKETCALL
|
||||
adjust_mmsghdr (vmessages, vlen);
|
||||
return SOCKETCALL_CANCEL (recvmmsg, fd, vmessages, vlen, flags, tmo);
|
||||
# else
|
||||
static int have_recvmmsg;
|
||||
if (__glibc_likely (have_recvmmsg >= 0))
|
||||
{
|
||||
adjust_mmsghdr (vmessages, vlen);
|
||||
int ret = SOCKETCALL_CANCEL (recvmmsg, fd, vmessages, vlen, flags,
|
||||
tmo);
|
||||
/* The kernel returns -EINVAL for unknown socket operations.
|
||||
|
|
@ -86,8 +92,19 @@ recvmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags,
|
|||
}
|
||||
__set_errno (ENOSYS);
|
||||
return -1;
|
||||
}
|
||||
# endif /* __ASSUME_RECVMMSG_SOCKETCALL */
|
||||
#else
|
||||
# include <socket/recvmmsg.c>
|
||||
# define STUB 1
|
||||
__set_errno (ENOSYS);
|
||||
return -1;
|
||||
#endif
|
||||
}
|
||||
#ifdef STUB
|
||||
stub_warning (recvmmsg)
|
||||
#endif
|
||||
|
||||
#if __WORDSIZE == 64
|
||||
versioned_symbol (libc, __recvmmsg, recvmmsg, GLIBC_2_24);
|
||||
#else
|
||||
weak_alias (__recvmmsg, recvmmsg)
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -1872,7 +1872,9 @@ GLIBC_2.23 fts64_open F
|
|||
GLIBC_2.23 fts64_read F
|
||||
GLIBC_2.23 fts64_set F
|
||||
GLIBC_2.24 GLIBC_2.24 A
|
||||
GLIBC_2.24 recvmmsg F
|
||||
GLIBC_2.24 recvmsg F
|
||||
GLIBC_2.24 sendmmsg F
|
||||
GLIBC_2.24 sendmsg F
|
||||
GLIBC_2.3 GLIBC_2.3 A
|
||||
GLIBC_2.3 __ctype_b_loc F
|
||||
|
|
|
|||
|
|
@ -16,12 +16,10 @@
|
|||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <errno.h>
|
||||
#include <sys/socket.h>
|
||||
|
||||
#include <socketcall.h>
|
||||
#include <sysdep-cancel.h>
|
||||
#include <sys/syscall.h>
|
||||
#include <kernel-features.h>
|
||||
#include <shlib-compat.h>
|
||||
|
||||
/* Do not use the sendmmsg syscall on socketcall architectures unless
|
||||
it was added at the same time as the socketcall support or can be
|
||||
|
|
@ -32,31 +30,53 @@
|
|||
# undef __NR_sendmmsg
|
||||
#endif
|
||||
|
||||
#ifdef __NR_sendmmsg
|
||||
int
|
||||
__sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
|
||||
#if __WORDSIZE == 64
|
||||
static inline int
|
||||
send_mmsghdr (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
|
||||
{
|
||||
return SYSCALL_CANCEL (sendmmsg, fd, vmessages, vlen, flags);
|
||||
/* Emulate kernel interface for vlen size. */
|
||||
if (vlen > IOV_MAX)
|
||||
vlen = IOV_MAX;
|
||||
if (vlen == 0)
|
||||
return 0;
|
||||
/* POSIX specifies that both msghdr::msg_iovlen and msghdr::msg_controllen
|
||||
to be int and socklen_t respectively, however Linux defines it as both
|
||||
size_t. So for 64-bit it requires some adjustments by copying to
|
||||
temporary header and zeroing the pad fields.
|
||||
The problem is sendmmsg's msghdr may points to an already-filled control
|
||||
buffer and modifying it is not part of sendmmsg contract (the data may
|
||||
be in ro map). So interact over the msghdr calling the sendmsg that
|
||||
adjust the header using a temporary buffer. */
|
||||
for (unsigned int i = 0; i < vlen; i++)
|
||||
{
|
||||
ssize_t ret = __sendmsg (fd, &vmessages[i].msg_hdr, flags);
|
||||
if (ret < 0)
|
||||
return -1;
|
||||
vmessages[i].msg_len = ret;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
libc_hidden_def (__sendmmsg)
|
||||
weak_alias (__sendmmsg, sendmmsg)
|
||||
#elif defined __NR_socketcall
|
||||
# include <socketcall.h>
|
||||
# ifdef __ASSUME_SENDMMSG_SOCKETCALL
|
||||
int
|
||||
__sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
|
||||
{
|
||||
return SOCKETCALL_CANCEL (sendmmsg, fd, vmessages, vlen, flags);
|
||||
}
|
||||
# else
|
||||
static int have_sendmmsg;
|
||||
#endif
|
||||
|
||||
int
|
||||
__sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
|
||||
{
|
||||
#if __WORDSIZE == 64
|
||||
return send_mmsghdr (fd, vmessages, vlen, flags);
|
||||
#elif defined __NR_sendmmsg
|
||||
return SYSCALL_CANCEL (sendmmsg, fd, vmessages, vlen, flags);
|
||||
#elif defined __NR_socketcall
|
||||
# ifdef __ASSUME_SENDMMSG_SOCKETCALL
|
||||
return SOCKETCALL_CANCEL (sendmmsg, fd, vmessages, vlen, flags);
|
||||
# else
|
||||
static int have_sendmmsg;
|
||||
if (__glibc_likely (have_sendmmsg >= 0))
|
||||
{
|
||||
# if __WORDSIZE == 64
|
||||
int ret = send_mmsghdr (fd, vmessages, vlen, flags);
|
||||
# else
|
||||
int ret = SOCKETCALL_CANCEL (sendmmsg, fd, vmessages, vlen, flags);
|
||||
# endif
|
||||
/* The kernel returns -EINVAL for unknown socket operations.
|
||||
We need to convert that error to an ENOSYS error. */
|
||||
if (__builtin_expect (ret < 0, 0)
|
||||
|
|
@ -84,10 +104,20 @@ __sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
|
|||
}
|
||||
__set_errno (ENOSYS);
|
||||
return -1;
|
||||
}
|
||||
# endif /* __ASSUME_SENDMMSG_SOCKETCALL */
|
||||
libc_hidden_def (__sendmmsg)
|
||||
weak_alias (__sendmmsg, sendmmsg)
|
||||
#else
|
||||
# include <socket/sendmmsg.c>
|
||||
#else /* defined __NR_socketcall */
|
||||
# define STUB 1
|
||||
__set_errno (ENOSYS);
|
||||
return -1;
|
||||
#endif
|
||||
}
|
||||
#ifdef STUB
|
||||
stub_warning (sendmmsg)
|
||||
#endif
|
||||
|
||||
libc_hidden_def (__sendmmsg)
|
||||
#if __WORDSIZE == 64
|
||||
versioned_symbol (libc, __sendmmsg, sendmmsg, GLIBC_2_24);
|
||||
#else
|
||||
weak_alias (__sendmmsg, sendmmsg)
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -1901,7 +1901,9 @@ GLIBC_2.23 fts64_open F
|
|||
GLIBC_2.23 fts64_read F
|
||||
GLIBC_2.23 fts64_set F
|
||||
GLIBC_2.24 GLIBC_2.24 A
|
||||
GLIBC_2.24 recvmmsg F
|
||||
GLIBC_2.24 recvmsg F
|
||||
GLIBC_2.24 sendmmsg F
|
||||
GLIBC_2.24 sendmsg F
|
||||
GLIBC_2.3 GLIBC_2.3 A
|
||||
GLIBC_2.3 __ctype_b_loc F
|
||||
|
|
|
|||
|
|
@ -2095,5 +2095,7 @@ GLIBC_2.23 fts64_open F
|
|||
GLIBC_2.23 fts64_read F
|
||||
GLIBC_2.23 fts64_set F
|
||||
GLIBC_2.24 GLIBC_2.24 A
|
||||
GLIBC_2.24 recvmmsg F
|
||||
GLIBC_2.24 recvmsg F
|
||||
GLIBC_2.24 sendmmsg F
|
||||
GLIBC_2.24 sendmsg F
|
||||
|
|
|
|||
|
|
@ -1852,7 +1852,9 @@ GLIBC_2.23 fts64_open F
|
|||
GLIBC_2.23 fts64_read F
|
||||
GLIBC_2.23 fts64_set F
|
||||
GLIBC_2.24 GLIBC_2.24 A
|
||||
GLIBC_2.24 recvmmsg F
|
||||
GLIBC_2.24 recvmsg F
|
||||
GLIBC_2.24 sendmmsg F
|
||||
GLIBC_2.24 sendmsg F
|
||||
GLIBC_2.3 GLIBC_2.3 A
|
||||
GLIBC_2.3 __ctype_b_loc F
|
||||
|
|
|
|||
Loading…
Reference in New Issue