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Add C wrappers for process_vm_readv/process_vm_writev [BZ #25810]

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Since the the U marker can only be applied to 2 unsigned long arguments
in syscalls.list files, add a C wrapper for process_vm_readv and
process_vm_writev syscals which have more than 2 unsigned long arguments.
This commit is contained in:
H.J. Lu 2020-04-29 13:20:27 -07:00
parent 07fe93cd98
commit ad9fd65d71
4 changed files with 66 additions and 3 deletions
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3
sysdeps/unix/sysv/linux/Makefile
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@ -59,7 +59,8 @@ sysdep_routines += adjtimex clone umount umount2 readahead sysctl \
eventfd eventfd_read eventfd_write prlimit \
personality epoll_wait tee vmsplice splice \
open_by_handle_at mlock2 pkey_mprotect pkey_set pkey_get \
timerfd_gettime timerfd_settime
timerfd_gettime timerfd_settime \
process_vm_readv process_vm_writev
CFLAGS-gethostid.c = -fexceptions
CFLAGS-tee.c = -fexceptions -fasynchronous-unwind-tables

32
sysdeps/unix/sysv/linux/process_vm_readv.c Normal file
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@ -0,0 +1,32 @@
/* process_vm_readv - Linux specific syscall.
Copyright (C) 2020 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/>. */
#include <unistd.h>
#include <sysdep.h>
#include <errno.h>
#include <sys/uio.h>
ssize_t
process_vm_readv (pid_t pid, const struct iovec *local_iov,
unsigned long int liovcnt,
const struct iovec *remote_iov,
unsigned long int riovcnt, unsigned long int flags)
{
return INLINE_SYSCALL_CALL (process_vm_readv, pid, local_iov,
liovcnt, remote_iov, riovcnt, flags);
}

32
sysdeps/unix/sysv/linux/process_vm_writev.c Normal file
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@ -0,0 +1,32 @@
/* process_vm_writev - Linux specific syscall.
Copyright (C) 2020 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/>. */
#include <unistd.h>
#include <sysdep.h>
#include <errno.h>
#include <sys/uio.h>
ssize_t
process_vm_writev (pid_t pid, const struct iovec *local_iov,
unsigned long int liovcnt,
const struct iovec *remote_iov,
unsigned long int riovcnt, unsigned long int flags)
{
return INLINE_SYSCALL_CALL (process_vm_writev, pid, local_iov,
liovcnt, remote_iov, riovcnt, flags);
}

2
sysdeps/unix/sysv/linux/syscalls.list
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@ -98,8 +98,6 @@ name_to_handle_at EXTRA name_to_handle_at i:isppi name_to_handle_at
setns EXTRA setns i:ii setns
process_vm_readv EXTRA process_vm_readv i:ipipii process_vm_readv
process_vm_writev EXTRA process_vm_writev i:ipipii process_vm_writev
memfd_create EXTRA memfd_create i:si memfd_create
pkey_alloc EXTRA pkey_alloc i:ii pkey_alloc
pkey_free EXTRA pkey_free i:i pkey_free