#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/proc.h>
#include <sys/filedesc.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <sys/malloc.h>
#include <sys/namei.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/ubc.h>
#include <sys/un.h>
#include <sys/unpcb.h>
#include <miscfs/portal/portal.h>
#include <vfs/vfs_support.h>
static int portal_fileid = PORTAL_ROOTFILEID+1;
static void
portal_closefd(p, fd)
struct proc *p;
int fd;
{
int error;
struct {
int fd;
} ua;
int rc;
ua.fd = fd;
error = close(p, &ua, &rc);
if (error)
printf("portal_closefd: error = %d\n", error);
}
int
portal_lookup(ap)
struct vop_lookup_args *ap;
{
struct componentname *cnp = ap->a_cnp;
struct vnode **vpp = ap->a_vpp;
struct vnode *dvp = ap->a_dvp;
char *pname = cnp->cn_nameptr;
struct portalnode *pt;
int error;
struct vnode *fvp = 0;
char *path;
int size;
*vpp = NULLVP;
if (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)
return (EROFS);
if (cnp->cn_namelen == 1 && *pname == '.') {
*vpp = dvp;
VREF(dvp);
return (0);
}
MALLOC(pt, void *, sizeof(struct portalnode), M_TEMP, M_WAITOK);
error = getnewvnode(VT_PORTAL, dvp->v_mount, portal_vnodeop_p, &fvp);
if (error) {
FREE(pt, M_TEMP);
goto bad;
}
fvp->v_type = VREG;
ubc_info_init(fvp);
fvp->v_data = pt;
for (size = 0, path = pname; *path; path++)
size++;
cnp->cn_consume = size - cnp->cn_namelen;
MALLOC(pt->pt_arg, caddr_t, size+1, M_TEMP, M_WAITOK);
pt->pt_size = size+1;
bcopy(pname, pt->pt_arg, pt->pt_size);
pt->pt_fileid = portal_fileid++;
*vpp = fvp;
return (0);
bad:
if (fvp)
vrele(fvp);
return (error);
}
static int
portal_connect(so, so2)
struct socket *so;
struct socket *so2;
{
struct socket *so3;
struct unpcb *unp2;
struct unpcb *unp3;
if (so2 == 0)
return (ECONNREFUSED);
if (so->so_type != so2->so_type)
return (EPROTOTYPE);
if ((so2->so_options & SO_ACCEPTCONN) == 0)
return (ECONNREFUSED);
if ((so3 = sonewconn(so2, 0)) == 0)
return (ECONNREFUSED);
unp2 = sotounpcb(so2);
unp3 = sotounpcb(so3);
if (unp2->unp_addr)
unp3->unp_addr = m_copy(unp2->unp_addr, 0, (int)M_COPYALL);
so2 = so3;
return (unp_connect2(so, so2));
}
int
portal_open(ap)
struct vop_open_args *ap;
{
struct socket *so = 0;
struct portalnode *pt;
struct proc *p = ap->a_p;
struct vnode *vp = ap->a_vp;
int s;
struct uio auio;
struct iovec aiov[2];
int res;
struct mbuf *cm = 0;
struct cmsghdr *cmsg;
int newfds;
int *ip;
int fd;
int error;
int len;
struct portalmount *fmp;
struct file *fp;
struct portal_cred pcred;
if (vp->v_flag & VROOT)
return (0);
if (p->p_dupfd >= 0)
return (ENODEV);
pt = VTOPORTAL(vp);
fmp = VFSTOPORTAL(vp->v_mount);
thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
error = socreate(AF_UNIX, &so, SOCK_STREAM, 0);
if (error) {
thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
goto bad;
}
res = pt->pt_size + sizeof(pcred) + 512;
error = soreserve(so, res, res);
if (error) {
thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
goto bad;
}
error = portal_connect(so, (struct socket *)fmp->pm_server->f_data);
if (error) {
thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
goto bad;
}
s = splnet();
while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
if (fcount(fmp->pm_server) == 1) {
error = ECONNREFUSED;
splx(s);
thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
goto bad;
}
(void) tsleep((caddr_t) &so->so_timeo, PSOCK, "portalcon", 5 * hz);
}
splx(s);
if (so->so_error) {
error = so->so_error;
thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
goto bad;
}
so->so_rcv.sb_timeo = 0;
so->so_snd.sb_timeo = 0;
so->so_rcv.sb_flags |= SB_NOINTR;
so->so_snd.sb_flags |= SB_NOINTR;
pcred.pcr_flag = ap->a_mode;
pcred.pcr_uid = ap->a_cred->cr_uid;
pcred.pcr_ngroups = ap->a_cred->cr_ngroups;
bcopy(ap->a_cred->cr_groups, pcred.pcr_groups, NGROUPS * sizeof(gid_t));
aiov[0].iov_base = (caddr_t) &pcred;
aiov[0].iov_len = sizeof(pcred);
aiov[1].iov_base = pt->pt_arg;
aiov[1].iov_len = pt->pt_size;
auio.uio_iov = aiov;
auio.uio_iovcnt = 2;
auio.uio_rw = UIO_WRITE;
auio.uio_segflg = UIO_SYSSPACE;
auio.uio_procp = p;
auio.uio_offset = 0;
auio.uio_resid = aiov[0].iov_len + aiov[1].iov_len;
error = sosend(so, (struct sockaddr *) 0, &auio,
(struct mbuf *) 0, (struct mbuf *) 0, 0);
if (error) {
thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
goto bad;
}
len = auio.uio_resid = sizeof(int);
do {
struct mbuf *m = 0;
int flags = MSG_WAITALL;
error = soreceive(so, (struct sockaddr **) 0, &auio,
&m, &cm, &flags);
if (error) {
thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
goto bad;
}
if (m) {
m = m_pullup(m, sizeof(int));
if (m) {
error = *(mtod(m, int *));
m_freem(m);
} else {
error = EINVAL;
}
} else {
if (cm == 0) {
error = ECONNRESET;
#ifdef notdef
break;
#endif
}
}
} while (cm == 0 && auio.uio_resid == len && !error);
if (cm == 0) {
thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
goto bad;
}
if (auio.uio_resid) {
error = 0;
#ifdef notdef
error = EMSGSIZE;
thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
goto bad;
#endif
}
cmsg = mtod(cm, struct cmsghdr *);
newfds = (cmsg->cmsg_len - sizeof(*cmsg)) / sizeof (int);
if (newfds == 0) {
error = ECONNREFUSED;
thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
goto bad;
}
thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
ip = (int *) (cmsg + 1);
fd = *ip++;
if (newfds > 1) {
int i;
printf("portal_open: %d extra fds\n", newfds - 1);
for (i = 1; i < newfds; i++) {
portal_closefd(p, *ip);
ip++;
}
}
fp = *fdfile(p, fd);
if (((ap->a_mode & (FREAD|FWRITE)) | fp->f_flag) != fp->f_flag) {
portal_closefd(p, fd);
error = EACCES;
goto bad;
}
p->p_dupfd = fd;
error = ENXIO;
bad:;
if (cm) {
m_freem(cm);
}
if (so) {
thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
soshutdown(so, 2);
soclose(so);
thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
}
return (error);
}
int
portal_getattr(ap)
struct vop_getattr_args *ap;
{
struct vnode *vp = ap->a_vp;
struct vattr *vap = ap->a_vap;
struct timeval tv;
bzero(vap, sizeof(*vap));
vattr_null(vap);
vap->va_uid = 0;
vap->va_gid = 0;
vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0];
vap->va_size = DEV_BSIZE;
vap->va_blocksize = DEV_BSIZE;
microtime(&tv);
TIMEVAL_TO_TIMESPEC(&tv, &vap->va_atime);
vap->va_mtime = vap->va_atime;
vap->va_ctime = vap->va_ctime;
vap->va_gen = 0;
vap->va_flags = 0;
vap->va_rdev = 0;
vap->va_bytes = 0;
if (vp->v_flag & VROOT) {
vap->va_type = VDIR;
vap->va_mode = S_IRUSR|S_IWUSR|S_IXUSR|
S_IRGRP|S_IWGRP|S_IXGRP|
S_IROTH|S_IWOTH|S_IXOTH;
vap->va_nlink = 2;
vap->va_fileid = 2;
} else {
vap->va_type = VREG;
vap->va_mode = S_IRUSR|S_IWUSR|
S_IRGRP|S_IWGRP|
S_IROTH|S_IWOTH;
vap->va_nlink = 1;
vap->va_fileid = VTOPORTAL(vp)->pt_fileid;
}
return (0);
}
int
portal_setattr(ap)
struct vop_setattr_args *ap;
{
if (ap->a_vp->v_flag & VROOT)
return (EACCES);
return (0);
}
int
portal_readdir(ap)
struct vop_readdir_args *ap;
{
if (ap->a_ncookies)
panic("portal_readdir: not hungry");
return (0);
}
int
portal_inactive(ap)
struct vop_inactive_args *ap;
{
VOP_UNLOCK(ap->a_vp, 0, ap->a_p);
return (0);
}
int
portal_reclaim(ap)
struct vop_reclaim_args *ap;
{
struct portalnode *pt = VTOPORTAL(ap->a_vp);
if (pt->pt_arg) {
_FREE((caddr_t) pt->pt_arg, M_TEMP);
pt->pt_arg = 0;
}
FREE(ap->a_vp->v_data, M_TEMP);
ap->a_vp->v_data = 0;
return (0);
}
portal_pathconf(ap)
struct vop_pathconf_args *ap;
{
switch (ap->a_name) {
case _PC_LINK_MAX:
*ap->a_retval = LINK_MAX;
return (0);
case _PC_MAX_CANON:
*ap->a_retval = MAX_CANON;
return (0);
case _PC_MAX_INPUT:
*ap->a_retval = MAX_INPUT;
return (0);
case _PC_PIPE_BUF:
*ap->a_retval = PIPE_BUF;
return (0);
case _PC_CHOWN_RESTRICTED:
*ap->a_retval = 1;
return (0);
case _PC_VDISABLE:
*ap->a_retval = _POSIX_VDISABLE;
return (0);
default:
return (EINVAL);
}
}
int
portal_print(ap)
struct vop_print_args *ap;
{
printf("tag VT_PORTAL, portal vnode\n");
return (0);
}
int
portal_vfree(ap)
struct vop_vfree_args *ap;
{
return (0);
}
int
portal_enotsupp()
{
return (EOPNOTSUPP);
}
int
portal_badop()
{
panic("portal: bad op");
}
int
portal_nullop()
{
return (0);
}
#define portal_create ((int (*) __P((struct vop_create_args *)))portal_enotsupp)
#define portal_mknod ((int (*) __P((struct vop_mknod_args *)))portal_enotsupp)
#define portal_close ((int (*) __P((struct vop_close_args *)))nullop)
#define portal_access ((int (*) __P((struct vop_access_args *)))nullop)
#define portal_read ((int (*) __P((struct vop_read_args *)))portal_enotsupp)
#define portal_write ((int (*) __P((struct vop_write_args *)))portal_enotsupp)
#define portal_ioctl ((int (*) __P((struct vop_ioctl_args *)))portal_enotsupp)
#define portal_select ((int (*) __P((struct vop_select_args *)))portal_enotsupp)
#define portal_mmap ((int (*) __P((struct vop_mmap_args *)))portal_enotsupp)
#define portal_revoke vop_revoke
#define portal_fsync ((int (*) __P((struct vop_fsync_args *)))nullop)
#define portal_seek ((int (*) __P((struct vop_seek_args *)))nullop)
#define portal_remove ((int (*) __P((struct vop_remove_args *)))portal_enotsupp)
#define portal_link ((int (*) __P((struct vop_link_args *)))portal_enotsupp)
#define portal_rename ((int (*) __P((struct vop_rename_args *)))portal_enotsupp)
#define portal_mkdir ((int (*) __P((struct vop_mkdir_args *)))portal_enotsupp)
#define portal_rmdir ((int (*) __P((struct vop_rmdir_args *)))portal_enotsupp)
#define portal_symlink \
((int (*) __P((struct vop_symlink_args *)))portal_enotsupp)
#define portal_readlink \
((int (*) __P((struct vop_readlink_args *)))portal_enotsupp)
#define portal_abortop ((int (*) __P((struct vop_abortop_args *)))nullop)
#define portal_lock ((int (*) __P((struct vop_lock_args *)))vop_nolock)
#define portal_unlock ((int (*) __P((struct vop_unlock_args *)))vop_nounlock)
#define portal_bmap ((int (*) __P((struct vop_bmap_args *)))portal_badop)
#define portal_strategy \
((int (*) __P((struct vop_strategy_args *)))portal_badop)
#define portal_islocked \
((int (*) __P((struct vop_islocked_args *)))vop_noislocked)
#define fifo_islocked ((int(*) __P((struct vop_islocked_args *)))vop_noislocked)
#define portal_advlock \
((int (*) __P((struct vop_advlock_args *)))portal_enotsupp)
#define portal_blkatoff \
((int (*) __P((struct vop_blkatoff_args *)))portal_enotsupp)
#define portal_valloc ((int(*) __P(( \
struct vnode *pvp, \
int mode, \
struct ucred *cred, \
struct vnode **vpp))) portal_enotsupp)
#define portal_truncate \
((int (*) __P((struct vop_truncate_args *)))portal_enotsupp)
#define portal_update ((int (*) __P((struct vop_update_args *)))portal_enotsupp)
#define portal_copyfile ((int (*) __P((struct vop_copyfile *)))err_copyfile)
#define portal_bwrite ((int (*) __P((struct vop_bwrite_args *)))portal_enotsupp)
#define portal_blktooff \
((int (*) __P((struct vop_blktooff_args *)))portal_enotsupp)
#define portal_offtoblk \
((int (*) __P((struct vop_offtoblk_args *)))portal_enotsupp)
#define portal_cmap \
((int (*) __P((struct vop_cmap_args *)))portal_enotsupp)
#define VOPFUNC int (*)(void *)
int (**portal_vnodeop_p)(void *);
struct vnodeopv_entry_desc portal_vnodeop_entries[] = {
{ &vop_default_desc, (VOPFUNC)vn_default_error },
{ &vop_lookup_desc, (VOPFUNC)portal_lookup },
{ &vop_create_desc, (VOPFUNC)portal_create },
{ &vop_mknod_desc, (VOPFUNC)portal_mknod },
{ &vop_open_desc, (VOPFUNC)portal_open },
{ &vop_close_desc, (VOPFUNC)portal_close },
{ &vop_access_desc, (VOPFUNC)portal_access },
{ &vop_getattr_desc, (VOPFUNC)portal_getattr },
{ &vop_setattr_desc, (VOPFUNC)portal_setattr },
{ &vop_read_desc, (VOPFUNC)portal_read },
{ &vop_write_desc, (VOPFUNC)portal_write },
{ &vop_ioctl_desc, (VOPFUNC)portal_ioctl },
{ &vop_select_desc, (VOPFUNC)portal_select },
{ &vop_mmap_desc, (VOPFUNC)portal_mmap },
{ &vop_revoke_desc, (VOPFUNC)portal_revoke },
{ &vop_fsync_desc, (VOPFUNC)portal_fsync },
{ &vop_seek_desc, (VOPFUNC)portal_seek },
{ &vop_remove_desc, (VOPFUNC)portal_remove },
{ &vop_link_desc, (VOPFUNC)portal_link },
{ &vop_rename_desc, (VOPFUNC)portal_rename },
{ &vop_mkdir_desc, (VOPFUNC)portal_mkdir },
{ &vop_rmdir_desc, (VOPFUNC)portal_rmdir },
{ &vop_symlink_desc, (VOPFUNC)portal_symlink },
{ &vop_readdir_desc, (VOPFUNC)portal_readdir },
{ &vop_readlink_desc, (VOPFUNC)portal_readlink },
{ &vop_abortop_desc, (VOPFUNC)portal_abortop },
{ &vop_inactive_desc, (VOPFUNC)portal_inactive },
{ &vop_reclaim_desc, (VOPFUNC)portal_reclaim },
{ &vop_lock_desc, (VOPFUNC)portal_lock },
{ &vop_unlock_desc, (VOPFUNC)portal_unlock },
{ &vop_bmap_desc, (VOPFUNC)portal_bmap },
{ &vop_strategy_desc, (VOPFUNC)portal_strategy },
{ &vop_print_desc, (VOPFUNC)portal_print },
{ &vop_islocked_desc, (VOPFUNC)portal_islocked },
{ &vop_pathconf_desc, (VOPFUNC)portal_pathconf },
{ &vop_advlock_desc, (VOPFUNC)portal_advlock },
{ &vop_blkatoff_desc, (VOPFUNC)portal_blkatoff },
{ &vop_valloc_desc, (VOPFUNC)portal_valloc },
{ &vop_vfree_desc, (VOPFUNC)portal_vfree },
{ &vop_truncate_desc, (VOPFUNC)portal_truncate },
{ &vop_update_desc, (VOPFUNC)portal_update },
{ &vop_bwrite_desc, (VOPFUNC)portal_bwrite },
{ &vop_pagein_desc, (VOPFUNC)err_pagein },
{ &vop_pageout_desc, (VOPFUNC)err_pageout },
{ &vop_copyfile_desc, (VOPFUNC)portal_copyfile },
{ &vop_blktooff_desc, (VOPFUNC)portal_blktooff },
{ &vop_blktooff_desc, (VOPFUNC)portal_offtoblk },
{ &vop_cmap_desc, (VOPFUNC)portal_cmap },
{ (struct vnodeop_desc*)NULL, (int(*)())NULL }
};
struct vnodeopv_desc portal_vnodeop_opv_desc =
{ &portal_vnodeop_p, portal_vnodeop_entries };