1 files changed, 36 insertions, 0 deletions

diff --git a/fs/compat.c b/fs/compat.c
index e04b4660db8..7c1615183d1 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1232,6 +1232,24 @@ compat_sys_readv(unsigned long fd, const struct compat_iovec __user *vec,
         return ret;
 }
 
+asmlinkage ssize_t
+compat_sys_preadv(unsigned long fd, const struct compat_iovec __user *vec,
+                  unsigned long vlen, u32 pos_high, u32 pos_low)
+{
+        loff_t pos = ((loff_t)pos_high << 32) | pos_low;
+        struct file *file;
+        ssize_t ret;
+
+        if (pos < 0)
+                return -EINVAL;
+        file = fget(fd);
+        if (!file)
+                return -EBADF;
+        ret = compat_readv(file, vec, vlen, &pos);
+        fput(file);
+        return ret;
+}
+
 static size_t compat_writev(struct file *file,
                             const struct compat_iovec __user *vec,
                             unsigned long vlen, loff_t *pos)
@@ -1269,6 +1287,24 @@ compat_sys_writev(unsigned long fd, const struct compat_iovec __user *vec,
         return ret;
 }
 
+asmlinkage ssize_t
+compat_sys_pwritev(unsigned long fd, const struct compat_iovec __user *vec,
+                   unsigned long vlen, u32 pos_high, u32 pos_low)
+{
+        loff_t pos = ((loff_t)pos_high << 32) | pos_low;
+        struct file *file;
+        ssize_t ret;
+
+        if (pos < 0)
+                return -EINVAL;
+        file = fget(fd);
+        if (!file)
+                return -EBADF;
+        ret = compat_writev(file, vec, vlen, &pos);
+        fput(file);
+        return ret;
+}
+
 asmlinkage long
 compat_sys_vmsplice(int fd, const struct compat_iovec __user *iov32,
                     unsigned int nr_segs, unsigned int flags)