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/*
* wnix, a Unix-like operating system for WebAssembly applications.
* Copyright (C) 2025 Xavier Del Campo Romero
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <aio.h>
#include <fs/fs.h>
#include <aio/types.h>
#include <state.h>
#include <stddef.h>
#include <stdlib.h>
struct write
{
struct aio_done done;
};
static int done(const enum state s, void *const args)
{
int ret = 0;
struct write *const w = args;
const struct aio_done *const d = &w->done;
if (d->f)
ret = d->f(s, d->args);
free(w);
return ret;
}
static enum state write_done(void *const args)
{
return STATE_OK;
}
struct aio *aio_write(const struct fs_write *const fw,
const struct aio_done *const d)
{
struct aio *aio = NULL;
struct write *const w = malloc(sizeof *w);
struct fs_fd *const fd = fw->fd;
const struct fs *const fs = fd->mp.fs;
if (!w || !(aio = malloc(sizeof *aio)))
goto failure;
*w = (const struct write){0};
*aio = (const struct aio)
{
.r.f = write_done,
.done =
{
.f = done,
.args = w
}
};
if (fs->write(fw, &aio->r))
goto failure;
else if (d)
w->done = *d;
return aio;
failure:
free(w);
free(aio);
return NULL;
}
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