return -EBADF;
if (!(file->f_mode & FMODE_CAN_READ))
return -EINVAL;
- if (unlikely(!access_ok(VERIFY_WRITE, buf, count)))
+ if (unlikely(!access_ok(buf, count)))
return -EFAULT;
ret = rw_verify_area(READ, file, pos, count);
return -EBADF;
if (!(file->f_mode & FMODE_CAN_WRITE))
return -EINVAL;
- if (unlikely(!access_ok(VERIFY_READ, buf, count)))
+ if (unlikely(!access_ok(buf, count)))
return -EFAULT;
ret = rw_verify_area(WRITE, file, pos, count);
return ret;
}
-/* A write operation does a read from user space and vice versa */
-#define vrfy_dir(type) ((type) == READ ? VERIFY_WRITE : VERIFY_READ)
-
/**
* rw_copy_check_uvector() - Copy an array of &struct iovec from userspace
* into the kernel and check that it is valid.
goto out;
}
if (type >= 0
- && unlikely(!access_ok(vrfy_dir(type), buf, len))) {
+ && unlikely(!access_ok(buf, len))) {
ret = -EFAULT;
goto out;
}
*ret_pointer = iov;
ret = -EFAULT;
- if (!access_ok(VERIFY_READ, uvector, nr_segs*sizeof(*uvector)))
+ if (!access_ok(uvector, nr_segs*sizeof(*uvector)))
goto out;
/*
if (len < 0) /* size_t not fitting in compat_ssize_t .. */
goto out;
if (type >= 0 &&
- !access_ok(vrfy_dir(type), compat_ptr(buf), len)) {
+ !access_ok(compat_ptr(buf), len)) {
ret = -EFAULT;
goto out;
}
struct inode *inode_out = file_inode(file_out);
loff_t ret;
- WARN_ON_ONCE(remap_flags);
+ WARN_ON_ONCE(remap_flags & REMAP_FILE_DEDUP);
if (S_ISDIR(inode_in->i_mode) || S_ISDIR(inode_out->i_mode))
return -EISDIR;
off = same->src_offset;
len = same->src_length;
- ret = -EISDIR;
if (S_ISDIR(src->i_mode))
- goto out;
+ return -EISDIR;
- ret = -EINVAL;
if (!S_ISREG(src->i_mode))
- goto out;
+ return -EINVAL;
+
+ if (!file->f_op->remap_file_range)
+ return -EOPNOTSUPP;
ret = remap_verify_area(file, off, len, false);
if (ret < 0)
- goto out;
+ return ret;
ret = 0;
if (off + len > i_size_read(src))
fdput(dst_fd);
next_loop:
if (fatal_signal_pending(current))
- goto out;
+ break;
}
-
-out:
return ret;
}
EXPORT_SYMBOL(vfs_dedupe_file_range);