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#include <linux/aio.h>
#include <linux/slab.h>
#include <linux/stat.h>
#include <linux/fcntl.h>
#include <linux/file.h>
#include <linux/uio.h>
#include <linux/fsnotify.h>
#include <linux/security.h>
#include <linux/export.h>
#include <linux/syscalls.h>
#include <linux/pagemap.h>
#include <linux/splice.h>
#include <linux/compat.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos)
{
struct kiocb kiocb;
ssize_t ret;
if (!file->f_op->read_iter)
return -EINVAL;
init_sync_kiocb(&kiocb, file);
kiocb.ki_pos = *ppos;
iter->type |= READ;
ret = file->f_op->read_iter(&kiocb, iter);
BUG_ON(ret == -EIOCBQUEUED);
if (ret > 0)
*ppos = kiocb.ki_pos;
return ret;
}
EXPORT_SYMBOL(vfs_iter_read);
ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos)
{
struct kiocb kiocb;
ssize_t ret;
if (!file->f_op->write_iter)
return -EINVAL;
init_sync_kiocb(&kiocb, file);
kiocb.ki_pos = *ppos;
iter->type |= WRITE;
ret = file->f_op->write_iter(&kiocb, iter);
BUG_ON(ret == -EIOCBQUEUED);
if (ret > 0)
*ppos = kiocb.ki_pos;
return ret;
}
EXPORT_SYMBOL(vfs_iter_write);
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