ia->ap.args.end = fuse_aio_complete_req;
err = fuse_simple_background(fc, &ia->ap.args, GFP_KERNEL);
+ if (err)
+ fuse_aio_complete_req(fc, &ia->ap.args, err);
- return err ?: num_bytes;
+ return num_bytes;
}
static ssize_t fuse_send_read(struct fuse_io_args *ia, loff_t pos, size_t count,
attr_ver = fuse_get_attr_version(fc);
+ /* Don't overflow end offset */
+ if (pos + (desc.length - 1) == LLONG_MAX)
+ desc.length--;
+
fuse_read_args_fill(&ia, file, pos, desc.length, FUSE_READ);
res = fuse_simple_request(fc, &ia.ap.args);
if (res < 0)
struct fuse_args_pages *ap = &ia->ap;
loff_t pos = page_offset(ap->pages[0]);
size_t count = ap->num_pages << PAGE_SHIFT;
+ ssize_t res;
int err;
ap->args.out_pages = true;
ap->args.page_zeroing = true;
ap->args.page_replace = true;
+
+ /* Don't overflow end offset */
+ if (pos + (count - 1) == LLONG_MAX) {
+ count--;
+ ap->descs[ap->num_pages - 1].length--;
+ }
+ WARN_ON((loff_t) (pos + count) < 0);
+
fuse_read_args_fill(ia, file, pos, count, FUSE_READ);
ia->read.attr_ver = fuse_get_attr_version(fc);
if (fc->async_read) {
if (!err)
return;
} else {
- err = fuse_simple_request(fc, &ap->args);
+ res = fuse_simple_request(fc, &ap->args);
+ err = res < 0 ? res : 0;
}
fuse_readpages_end(fc, &ap->args, err);
}
ia->write.in.flags = fuse_write_flags(iocb);
err = fuse_simple_request(fc, &ap->args);
+ if (!err && ia->write.out.size > count)
+ err = -EIO;
offset = ap->descs[0].offset;
count = ia->write.out.size;
}
if (write)
- ap->args.in_pages = 1;
+ ap->args.in_pages = true;
else
- ap->args.out_pages = 1;
+ ap->args.out_pages = true;
*nbytesp = nbytes;
}
ia = NULL;
if (nres < 0) {
+ iov_iter_revert(iter, nbytes);
err = nres;
break;
}
count -= nres;
res += nres;
pos += nres;
- if (nres != nbytes)
+ if (nres != nbytes) {
+ iov_iter_revert(iter, nbytes - nres);
break;
+ }
if (count) {
max_pages = iov_iter_npages(iter, fc->max_pages);
ia = fuse_io_alloc(io, max_pages);