From: "H.J. Lu" <hjl.tools@gmail.com>
To: libc-stable@sourceware.org
Subject: [2.31/2.30] [PATCH 5/6] Add C wrappers for process_vm_readv/process_vm_writev [BZ #25810]
Date: Thu, 30 Apr 2020 12:34:22 -0700 [thread overview]
Message-ID: <20200430193423.807713-6-hjl.tools@gmail.com> (raw)
In-Reply-To: <20200430193423.807713-1-hjl.tools@gmail.com>
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.
(cherry picked from commit ad9fd65d716f1ccd757b6b2feeee826d0f187ed4)
---
sysdeps/unix/sysv/linux/Makefile | 3 +-
sysdeps/unix/sysv/linux/process_vm_readv.c | 32 +++++++++++++++++++++
sysdeps/unix/sysv/linux/process_vm_writev.c | 32 +++++++++++++++++++++
sysdeps/unix/sysv/linux/syscalls.list | 2 --
4 files changed, 66 insertions(+), 3 deletions(-)
create mode 100644 sysdeps/unix/sysv/linux/process_vm_readv.c
create mode 100644 sysdeps/unix/sysv/linux/process_vm_writev.c
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index f12b7b1a2d..62f1642732 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -60,7 +60,8 @@ sysdep_routines += adjtimex clone umount umount2 readahead \
setfsuid setfsgid epoll_pwait signalfd \
eventfd eventfd_read eventfd_write prlimit \
personality epoll_wait tee vmsplice splice \
- open_by_handle_at mlock2 pkey_mprotect pkey_set pkey_get
+ open_by_handle_at mlock2 pkey_mprotect pkey_set pkey_get \
+ process_vm_readv process_vm_writev
CFLAGS-gethostid.c = -fexceptions
CFLAGS-tee.c = -fexceptions -fasynchronous-unwind-tables
diff --git a/sysdeps/unix/sysv/linux/process_vm_readv.c b/sysdeps/unix/sysv/linux/process_vm_readv.c
new file mode 100644
index 0000000000..e1377f7e50
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/process_vm_readv.c
@@ -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);
+}
diff --git a/sysdeps/unix/sysv/linux/process_vm_writev.c b/sysdeps/unix/sysv/linux/process_vm_writev.c
new file mode 100644
index 0000000000..944ab9b7f1
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/process_vm_writev.c
@@ -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);
+}
diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index 76dd308d82..5bb66d5481 100644
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -102,8 +102,6 @@ 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
--
2.26.2
next prev parent reply other threads:[~2020-04-30 19:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-30 19:34 [2.31/2.30] [PATCH 0/6] Properly pass long to syscall [BZ #25810/#25896] H.J. Lu
2020-04-30 19:34 ` [2.31/2.30] [PATCH 1/6] x32: Properly pass long to syscall [BZ #25810] H.J. Lu
2020-04-30 19:34 ` [2.31/2.30] [PATCH 2/6] Add SYSCALL_ULONG_ARG_[12] to " H.J. Lu
2020-04-30 19:34 ` [2.31/2.30] [PATCH 3/6] Add a syscall test for " H.J. Lu
2020-04-30 19:34 ` [2.31/2.30] [PATCH 4/6] Mark unsigned long arguments with U in more syscalls " H.J. Lu
2020-04-30 19:34 ` H.J. Lu [this message]
2020-04-30 19:34 ` [2.31/2.30] [PATCH 6/6] Add a C wrapper for prctl [BZ #25896] H.J. Lu
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