static ssize_t orangefs_file_write_iter(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
loff_t pos;
ssize_t rc;
BUG_ON(iocb->private);
gossip_debug(GOSSIP_FILE_DEBUG, "orangefs_file_write_iter\n");
inode_lock(file->f_mapping->host);
/* Make sure generic_write_checks sees an up to date inode size. */
if (file->f_flags & O_APPEND) {
rc = orangefs_inode_getattr(file->f_mapping->host, 0, 1);
if (rc == -ESTALE)
rc = -EIO;
if (rc) {
gossip_err("%s: orangefs_inode_getattr failed, "
"rc:%zd:.\n", __func__, rc);
goto out;
}
}
if (file->f_pos > i_size_read(file->f_mapping->host))
orangefs_i_size_write(file->f_mapping->host, file->f_pos);
rc = generic_write_checks(iocb, iter);
if (rc <= 0) {
gossip_err("%s: generic_write_checks failed, rc:%zd:.\n",
__func__, rc);
goto out;
}
/*
* if we are appending, generic_write_checks would have updated
* pos to the end of the file, so we will wait till now to set
* pos...
*/
pos = *(&iocb->ki_pos);
rc = do_readv_writev(ORANGEFS_IO_WRITE,
file,
&pos,
iter);
if (rc < 0) {
gossip_err("%s: do_readv_writev failed, rc:%zd:.\n",
__func__, rc);
goto out;
}
iocb->ki_pos = pos;
g_orangefs_stats.writes++;
out:
inode_unlock(file->f_mapping->host);
return rc;
}
ssize_t vfs_writev(struct file *file, const struct iovec __user *vec,
unsigned long vlen, loff_t *pos)
{
if (!(file->f_mode & FMODE_WRITE))
return -EBADF;
if (!file->f_op || (!file->f_op->writev && !file->f_op->write))
return -EINVAL;
return do_readv_writev(WRITE, file, vec, vlen, pos);
}
ssize_t vfs_readv(struct file *file, const struct iovec __user *vec,
unsigned long vlen, loff_t *pos)
{
if (!(file->f_mode & FMODE_READ))
return -EBADF;
if (!file->f_op || (!file->f_op->aio_read && !file->f_op->read))
return -EINVAL;
return do_readv_writev(READ, file, vec, vlen, pos);
}
ssize_t vfs_readv(struct file *file, const struct iovec __user *vec,
unsigned long vlen, loff_t *pos, int flags)
{
if (!(file->f_mode & FMODE_READ))
return -EBADF;
if (!(file->f_mode & FMODE_CAN_READ))
return -EINVAL;
return do_readv_writev(READ, file, vec, vlen, pos, flags);
}
asmlinkage int sys_readv(unsigned long fd, const struct iovec * vector, long count)
{
struct file * file;
struct inode * inode;
if (fd >= NR_OPEN || !(file = current->files->fd[fd]) || !(inode = file->f_inode))
return -EBADF;
if (!(file->f_mode & 1))
return -EBADF;
return do_readv_writev(VERIFY_WRITE, inode, file, vector, count);
}
asmlinkage int sys_writev(unsigned long fd, const struct iovec * vector, long count)
{
int error;
struct file * file;
struct inode * inode;
if (fd >= NR_OPEN || !(file = current->files->fd[fd]) || !(inode = file->f_inode))
return -EBADF;
if (!(file->f_mode & 2))
return -EBADF;
down(&inode->i_sem);
error = do_readv_writev(VERIFY_READ, inode, file, vector, count);
up(&inode->i_sem);
return error;
}
static ssize_t orangefs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
loff_t pos = *(&iocb->ki_pos);
ssize_t rc = 0;
BUG_ON(iocb->private);
gossip_debug(GOSSIP_FILE_DEBUG, "orangefs_file_read_iter\n");
g_orangefs_stats.reads++;
rc = do_readv_writev(ORANGEFS_IO_READ, file, &pos, iter);
iocb->ki_pos = pos;
return rc;
}
asmlinkage ssize_t sys_writev(unsigned long fd, const struct iovec * vector,
unsigned long count)
{
struct file * file;
ssize_t ret;
ret = -EBADF;
file = fget(fd);
if (!file)
goto bad_file;
if (file->f_op && (file->f_mode & FMODE_WRITE) &&
(file->f_op->writev || file->f_op->write))
ret = do_readv_writev(VERIFY_READ, file, vector, count);
fput(file);
bad_file:
return ret;
}
asmlinkage ssize_t sys_readv(unsigned long fd, const struct iovec * vector,
unsigned long count)
{
struct file * file;
struct vms_fd * vms_fd;
ssize_t ret;
ret = -EBADF;
vms_fd = fget(fd);
file = vms_fd->vfd$l_fd_p;
if (!file)
goto bad_file;
if (file->f_op && (file->f_mode & FMODE_READ) &&
(file->f_op->readv || file->f_op->read))
ret = do_readv_writev(VERIFY_WRITE, file, vector, count);
fput(file);
bad_file:
return ret;
}
static ssize_t scribe_do_readv_writev(int type, struct file *file,
const struct iovec __user * uvector,
unsigned long nr_segs, loff_t *pos)
{
struct scribe_ps *scribe = current->scribe;
struct iovec iovstack[UIO_FASTIOV];
struct iovec *iov = iovstack;
int force_block = 0;
ssize_t ret, len = 0;
if (!is_scribed(scribe))
return do_readv_writev(type, file, uvector, nr_segs, 0, pos,
force_block);
if (is_kernel_copy())
goto out;
if (!should_scribe_data(scribe))
goto out;
scribe_need_syscall_ret(scribe);
if (is_replaying(scribe)) {
len = scribe->orig_ret;
if (len <= 0) {
rw_copy_check_uvector(type, uvector, nr_segs,
ARRAY_SIZE(iovstack), iovstack,
&iov);
ret = len;
goto free;
}
force_block = 1;
}
if (type == READ) {
if (is_deterministic(file))
goto out;
scribe_data_non_det();
if (is_recording(scribe))
goto out;
rw_copy_check_uvector(type, uvector, nr_segs,
ARRAY_SIZE(iovstack), iovstack, &iov);
ret = __do_loop_readv_writev(file, iov, nr_segs, len, pos,
io_scribe_emul_copy_to_user);
goto free;
}
out:
scribe->in_read_write = true;
ret = do_readv_writev(type, file, uvector, nr_segs, len, pos,
force_block);
scribe->in_read_write = false;
free:
if (iov != iovstack)
kfree(iov);
return ret;
}
static ssize_t scribe_do_readv_writev(int type, struct file *file,
const struct iovec __user * uvector,
unsigned long nr_segs, loff_t *pos)
{
return do_readv_writev(type, file, uvector, nr_segs, 0, pos, 0);
}