}
static ssize_t
-ncp_file_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
+ncp_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
+ struct file *file = iocb->ki_filp;
struct inode *inode = file_inode(file);
size_t already_read = 0;
- off_t pos;
+ off_t pos = iocb->ki_pos;
size_t bufsize;
int error;
- void* freepage;
+ void *freepage;
size_t freelen;
ncp_dbg(1, "enter %pD2\n", file);
- pos = *ppos;
-
- if ((ssize_t) count < 0) {
- return -EINVAL;
- }
- if (!count)
+ if (!iov_iter_count(to))
return 0;
if (pos > inode->i_sb->s_maxbytes)
return 0;
- if (pos + count > inode->i_sb->s_maxbytes) {
- count = inode->i_sb->s_maxbytes - pos;
- }
+ iov_iter_truncate(to, inode->i_sb->s_maxbytes - pos);
error = ncp_make_open(inode, O_RDONLY);
if (error) {
goto outrel;
error = 0;
/* First read in as much as possible for each bufsize. */
- while (already_read < count) {
+ while (iov_iter_count(to)) {
int read_this_time;
- size_t to_read = min_t(unsigned int,
+ size_t to_read = min_t(size_t,
bufsize - (pos % bufsize),
- count - already_read);
+ iov_iter_count(to));
error = ncp_read_bounce(NCP_SERVER(inode),
NCP_FINFO(inode)->file_handle,
- pos, to_read, buf, &read_this_time,
+ pos, to_read, to, &read_this_time,
freepage, freelen);
if (error) {
error = -EIO; /* NW errno -> Linux errno */
break;
}
pos += read_this_time;
- buf += read_this_time;
already_read += read_this_time;
- if (read_this_time != to_read) {
+ if (read_this_time != to_read)
break;
- }
}
vfree(freepage);
- *ppos = pos;
+ iocb->ki_pos = pos;
file_accessed(file);
}
static ssize_t
-ncp_file_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+ncp_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
+ struct file *file = iocb->ki_filp;
struct inode *inode = file_inode(file);
size_t already_written = 0;
- off_t pos;
size_t bufsize;
int errno;
- void* bouncebuffer;
+ void *bouncebuffer;
+ off_t pos;
ncp_dbg(1, "enter %pD2\n", file);
- if ((ssize_t) count < 0)
- return -EINVAL;
- pos = *ppos;
- if (file->f_flags & O_APPEND) {
- pos = i_size_read(inode);
- }
+ errno = generic_write_checks(iocb, from);
+ if (errno <= 0)
+ return errno;
- if (pos + count > MAX_NON_LFS && !(file->f_flags&O_LARGEFILE)) {
- if (pos >= MAX_NON_LFS) {
- return -EFBIG;
- }
- if (count > MAX_NON_LFS - (u32)pos) {
- count = MAX_NON_LFS - (u32)pos;
- }
- }
- if (pos >= inode->i_sb->s_maxbytes) {
- if (count || pos > inode->i_sb->s_maxbytes) {
- return -EFBIG;
- }
- }
- if (pos + count > inode->i_sb->s_maxbytes) {
- count = inode->i_sb->s_maxbytes - pos;
- }
-
- if (!count)
- return 0;
errno = ncp_make_open(inode, O_WRONLY);
if (errno) {
ncp_dbg(1, "open failed, error=%d\n", errno);
}
bufsize = NCP_SERVER(inode)->buffer_size;
- already_written = 0;
-
errno = file_update_time(file);
if (errno)
goto outrel;
errno = -EIO; /* -ENOMEM */
goto outrel;
}
- while (already_written < count) {
+ pos = iocb->ki_pos;
+ while (iov_iter_count(from)) {
int written_this_time;
- size_t to_write = min_t(unsigned int,
+ size_t to_write = min_t(size_t,
bufsize - (pos % bufsize),
- count - already_written);
+ iov_iter_count(from));
- if (copy_from_user(bouncebuffer, buf, to_write)) {
+ if (copy_from_iter(bouncebuffer, to_write, from) != to_write) {
errno = -EFAULT;
break;
}
break;
}
pos += written_this_time;
- buf += written_this_time;
already_written += written_this_time;
- if (written_this_time != to_write) {
+ if (written_this_time != to_write)
break;
- }
}
vfree(bouncebuffer);
- *ppos = pos;
+ iocb->ki_pos = pos;
if (pos > i_size_read(inode)) {
mutex_lock(&inode->i_mutex);
const struct file_operations ncp_file_operations =
{
.llseek = generic_file_llseek,
- .read = ncp_file_read,
- .write = ncp_file_write,
+ .read_iter = ncp_file_read_iter,
+ .write_iter = ncp_file_write_iter,
.unlocked_ioctl = ncp_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = ncp_compat_ioctl,