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/*
* Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Hyra nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/vfs.h>
#include <sys/vnode.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/namei.h>
#include <sys/stat.h>
#include <sys/limits.h>
#include <sys/errno.h>
#include <sys/types.h>
#include <sys/filedesc.h>
#include <string.h>
static int
vfs_dostat(const char *path, struct stat *sbuf)
{
char pathbuf[PATH_MAX];
struct vattr *attr;
struct stat st;
struct vnode *vp;
struct vop_getattr_args gattr;
struct nameidata nd;
int error;
if (sbuf == NULL || path == NULL) {
return -EINVAL;
}
if ((copyinstr(path, pathbuf, sizeof(path))) < 0) {
return -EFAULT;
}
nd.path = path;
nd.flags = 0;
if ((error = namei(&nd)) != 0) {
return error;
}
vp = nd.vp;
gattr.vp = vp;
error = vfs_vop_getattr(vp, &gattr);
if (error != 0) {
return error;
}
attr = gattr.res;
memset(&st, VNOVAL, sizeof(st));
/* Copy stat data to userspace statbuf */
st.st_mode = attr->mode;
st.st_size = attr->size;
copyout(&st, sbuf, sizeof(*sbuf));
return 0;
}
/*
* arg0: pathname
* arg1: oflags
*
* TODO: Use oflags.
*/
scret_t
sys_open(struct syscall_args *scargs)
{
return fd_open((char *)scargs->arg0, scargs->arg1);
}
/*
* arg0: fd
*/
scret_t
sys_close(struct syscall_args *args)
{
return fd_close(args->arg0);
}
/*
* arg0: fd
* arg1: buf
* arg2: count
*/
scret_t
sys_read(struct syscall_args *scargs)
{
return fd_read(scargs->arg0, (void *)scargs->arg1,
scargs->arg2);
}
/*
* arg0: path
* arg1: buf
*/
scret_t
sys_stat(struct syscall_args *scargs)
{
return vfs_dostat((const char *)scargs->arg0, (void *)scargs->arg1);
}
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