static ssize_t
zpl_aio_write(struct kiocb *kiocb, const struct iovec *iovp,
unsigned long nr_segs, loff_t pos)
{
return (zpl_iter_write_common(kiocb, iovp, nr_segs, kiocb->ki_nbytes,
UIO_USERSPACE, 0));
}
static ssize_t
zpl_iter_write(struct kiocb *kiocb, struct iov_iter *from)
{
ssize_t ret;
uio_seg_t seg = UIO_USERSPACE;
if (from->type & ITER_KVEC)
seg = UIO_SYSSPACE;
if (from->type & ITER_BVEC)
seg = UIO_BVEC;
ret = zpl_iter_write_common(kiocb, from->iov, from->nr_segs,
iov_iter_count(from), seg, from->iov_offset);
if (ret > 0)
iov_iter_advance(from, ret);
return (ret);
}
static ssize_t
zpl_iter_write(struct kiocb *kiocb, struct iov_iter *from)
{
size_t count;
ssize_t ret;
uio_seg_t seg = UIO_USERSPACE;
#ifndef HAVE_GENERIC_WRITE_CHECKS_KIOCB
struct file *file = kiocb->ki_filp;
struct address_space *mapping = file->f_mapping;
struct inode *ip = mapping->host;
int isblk = S_ISBLK(ip->i_mode);
count = iov_iter_count(from);
ret = generic_write_checks(file, &kiocb->ki_pos, &count, isblk);
if (ret)
return (ret);
#else
/*
* XXX - ideally this check should be in the same lock region with
* write operations, so that there's no TOCTTOU race when doing
* append and someone else grow the file.
*/
ret = generic_write_checks(kiocb, from);
if (ret <= 0)
return (ret);
count = ret;
#endif
if (from->type & ITER_KVEC)
seg = UIO_SYSSPACE;
if (from->type & ITER_BVEC)
seg = UIO_BVEC;
ret = zpl_iter_write_common(kiocb, from->iov, from->nr_segs,
count, seg, from->iov_offset);
if (ret > 0)
iov_iter_advance(from, ret);
return (ret);
}
static ssize_t
zpl_aio_write(struct kiocb *kiocb, const struct iovec *iovp,
unsigned long nr_segs, loff_t pos)
{
struct file *file = kiocb->ki_filp;
struct address_space *mapping = file->f_mapping;
struct inode *ip = mapping->host;
int isblk = S_ISBLK(ip->i_mode);
size_t count;
ssize_t ret;
ret = generic_segment_checks(iovp, &nr_segs, &count, VERIFY_READ);
if (ret)
return (ret);
ret = generic_write_checks(file, &pos, &count, isblk);
if (ret)
return (ret);
return (zpl_iter_write_common(kiocb, iovp, nr_segs, count,
UIO_USERSPACE, 0));
}
static ssize_t
zpl_iter_write(struct kiocb *kiocb, struct iov_iter *from)
{
return (zpl_iter_write_common(kiocb, from->iov, from->nr_segs,
iov_iter_count(from)));
}
