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-rw-r--r--fs/compat.c25
1 files changed, 18 insertions, 7 deletions
diff --git a/fs/compat.c b/fs/compat.c
index e99048c21c56..e04b4660db84 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1232,15 +1232,12 @@ compat_sys_readv(unsigned long fd, const struct compat_iovec __user *vec,
return ret;
}
-asmlinkage ssize_t
-compat_sys_writev(unsigned long fd, const struct compat_iovec __user *vec, unsigned long vlen)
+static size_t compat_writev(struct file *file,
+ const struct compat_iovec __user *vec,
+ unsigned long vlen, loff_t *pos)
{
- struct file *file;
ssize_t ret = -EBADF;
- file = fget(fd);
- if (!file)
- return -EBADF;
if (!(file->f_mode & FMODE_WRITE))
goto out;
@@ -1248,12 +1245,26 @@ compat_sys_writev(unsigned long fd, const struct compat_iovec __user *vec, unsig
if (!file->f_op || (!file->f_op->aio_write && !file->f_op->write))
goto out;
- ret = compat_do_readv_writev(WRITE, file, vec, vlen, &file->f_pos);
+ ret = compat_do_readv_writev(WRITE, file, vec, vlen, pos);
out:
if (ret > 0)
add_wchar(current, ret);
inc_syscw(current);
+ return ret;
+}
+
+asmlinkage ssize_t
+compat_sys_writev(unsigned long fd, const struct compat_iovec __user *vec,
+ unsigned long vlen)
+{
+ struct file *file;
+ ssize_t ret;
+
+ file = fget(fd);
+ if (!file)
+ return -EBADF;
+ ret = compat_writev(file, vec, vlen, &file->f_pos);
fput(file);
return ret;
}