/*
* The sys call that tells the system about a quota file.
*/
setquota()
{
register struct a {
char *fblk;
char *fname;
} *uap = (struct a *)u.u_ap;
register struct mount *mp;
dev_t dev;
#ifndef QUOTA
u.u_error = EINVAL;
return;
#else
u.u_error = getmdev(&dev, uap->fblk);
if (u.u_error)
return;
for (mp = mount; mp < &mount[NMOUNT]; mp++)
if (mp->m_bufp && mp->m_dev == dev) {
if (uap->fname == NULL)
closedq(mp);
else
opendq(mp, (caddr_t)uap->fname);
return;
}
#endif
}
smount()
{
register struct a {
char *fspec;
char *freg;
int ronly;
} *uap = (struct a *)u.u_ap;
dev_t dev;
register struct inode *ip;
register struct fs *fs;
register struct nameidata *ndp = &u.u_nd;
u_int len;
u.u_error = getmdev(&dev, uap->fspec);
if (u.u_error)
return;
ndp->ni_nameiop = LOOKUP | FOLLOW;
ndp->ni_segflg = UIO_USERSPACE;
ndp->ni_dirp = (caddr_t)uap->freg;
ip = namei(ndp);
if (ip == NULL)
return;
if (ip->i_count != 1) {
iput(ip);
u.u_error = EBUSY;
return;
}
if ((ip->i_mode&IFMT) != IFDIR) {
iput(ip);
u.u_error = ENOTDIR;
return;
}
fs = mountfs(dev, uap->ronly, ip);
if (fs == 0)
return;
(void) copyinstr(uap->freg, fs->fs_fsmnt, sizeof(fs->fs_fsmnt)-1, &len);
bzero(fs->fs_fsmnt + len, sizeof (fs->fs_fsmnt) - len);
}
