From 9cf9c39e48342a5d4007824d49b88132d93d83e3 Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Sat, 23 Jun 2012 21:38:47 -0400
Subject: [PATCH] add process_vm_readv and process_vm_writev syscall wrappers

based on a patch submitted by Kristian L. <email@thexception.net>
---
 include/sys/uio.h      |  9 +++++++++
 src/linux/process_vm.c | 13 +++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 src/linux/process_vm.c

diff --git a/include/sys/uio.h b/include/sys/uio.h
index f77db33a..7a75a542 100644
--- a/include/sys/uio.h
+++ b/include/sys/uio.h
@@ -9,11 +9,20 @@ extern "C" {
 #define __NEED_ssize_t
 #define __NEED_struct_iovec
 
+#ifdef _GNU_SOURCE
+#define __NEED_pid_t
+#endif
+
 #include <bits/alltypes.h>
 
 ssize_t readv (int, const struct iovec *, int);
 ssize_t writev (int, const struct iovec *, int);
 
+#ifdef _GNU_SOURCE
+ssize_t process_vm_writev(pid_t, const struct iovec *, unsigned long, const struct iovec *, unsigned long, unsigned long);
+ssize_t process_vm_readv(pid_t, const struct iovec *, unsigned long, const struct iovec *, unsigned long, unsigned long);
+#endif
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/linux/process_vm.c b/src/linux/process_vm.c
new file mode 100644
index 00000000..7703bdf0
--- /dev/null
+++ b/src/linux/process_vm.c
@@ -0,0 +1,13 @@
+#define _GNU_SOURCE
+#include <sys/uio.h>
+#include "syscall.h"
+
+ssize_t process_vm_writev(pid_t pid, const struct iovec *lvec, unsigned long liovcnt, const struct iovec *rvec, unsigned long riovcnt, unsigned long flags)
+{
+	return syscall(SYS_process_vm_writev, pid, lvec, liovcnt, rvec, riovcnt, flags);
+}
+
+ssize_t process_vm_readv(pid_t pid, const struct iovec *lvec, unsigned long liovcnt, const struct iovec *rvec, unsigned long riovcnt, unsigned long flags)
+{
+	return syscall(SYS_process_vm_readv, pid, lvec, liovcnt, rvec, riovcnt, flags);
+}
-- 
2.25.1