#include <sys/param.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/buf.h>
#include <sys/mount.h>
#include <sys/signalvar.h>
#include <sys/vnode.h>
#include <sys/malloc.h>
#include <ufs/ufs/quota.h>
#include <ufs/ufs/inode.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ufs/ufs_extern.h>
#include <ufs/ffs/fs.h>
#include <ufs/ffs/ffs_extern.h>
#include <ufs/mfs/mfsnode.h>
#include <ufs/mfs/mfs_extern.h>
caddr_t mfs_rootbase;
u_long mfs_rootsize;
static int mfs_minor;
extern int (**mfs_vnodeop_p)(void *);
struct vfsops mfs_vfsops = {
MOUNT_MFS,
mfs_mount,
mfs_start,
ffs_unmount,
ufs_root,
ufs_quotactl,
mfs_statfs,
ffs_sync,
ffs_vget,
ffs_fhtovp,
ffs_vptofh,
mfs_init,
};
#define ROOTNAME "mfs_root"
mfs_mountroot()
{
extern struct vnode *rootvp;
register struct fs *fs;
register struct mount *mp;
struct proc *p = kernel_proc;
struct ufsmount *ump;
struct mfsnode *mfsp;
size_t size;
int error;
#if 0
if (bdevvp(swapdev, &swapdev_vp) || bdevvp(rootdev, &rootvp))
panic("mfs_mountroot: can't setup bdevvp's");
#else
if ( bdevvp(rootdev, &rootvp))
panic("mfs_mountroot: can't setup bdevvp's");
#endif
MALLOC_ZONE(mp, struct mount *,
sizeof(struct mount), M_MOUNT, M_WAITOK);
bzero((char *)mp, (u_long)sizeof(struct mount));
mp->mnt_maxreadcnt = mp->mnt_maxwritecnt = MAXPHYS;
mp->mnt_segreadcnt = mp->mnt_segwritecnt = 32;
mp->mnt_op = &mfs_vfsops;
mp->mnt_flag = MNT_RDONLY;
MALLOC(mfsp, struct mfsnode *, sizeof(struct mfsnode), M_MFSNODE, M_WAITOK);
rootvp->v_data = mfsp;
rootvp->v_op = mfs_vnodeop_p;
rootvp->v_tag = VT_MFS;
mfsp->mfs_baseoff = mfs_rootbase;
mfsp->mfs_size = mfs_rootsize;
mfsp->mfs_vnode = rootvp;
mfsp->mfs_pid = p->p_pid;
mfsp->mfs_buflist = (struct buf *)0;
if (error = ffs_mountfs(rootvp, mp, p)) {
vrele(rootvp);
_FREE_ZONE(mp, sizeof (struct mount), M_MOUNT);
_FREE(mfsp, M_MFSNODE);
return (error);
}
if (error = vfs_lock(mp)) {
(void)ffs_unmount(mp, 0, p);
_FREE_ZONE(mp, sizeof (struct mount), M_MOUNT);
_FREE(mfsp, M_MFSNODE);
return (error);
}
CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list);
mp->mnt_vnodecovered = NULLVP;
ump = VFSTOUFS(mp);
fs = ump->um_fs;
bzero(fs->fs_fsmnt, sizeof(fs->fs_fsmnt));
fs->fs_fsmnt[0] = '/';
bcopy(fs->fs_fsmnt, mp->mnt_stat.f_mntonname, MNAMELEN);
(void) copystr(ROOTNAME, mp->mnt_stat.f_mntfromname, MNAMELEN - 1,
&size);
bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
(void)ffs_statfs(mp, &mp->mnt_stat, p);
vfs_unlock(mp);
inittodr((time_t)0);
return (0);
}
mfs_initminiroot(base)
caddr_t base;
{
struct fs *fs = (struct fs *)(base + SBOFF);
extern int (*mountroot)();
if (fs->fs_magic != FS_MAGIC || fs->fs_bsize > MAXBSIZE ||
fs->fs_bsize < sizeof(struct fs))
return (0);
mountroot = mfs_mountroot;
mfs_rootbase = base;
mfs_rootsize = fs->fs_fsize * fs->fs_size;
rootdev = makedev(255, mfs_minor++);
return (mfs_rootsize);
}
int
mfs_mount(mp, path, data, ndp, p)
register struct mount *mp;
char *path;
caddr_t data;
struct nameidata *ndp;
struct proc *p;
{
struct vnode *devvp;
struct mfs_args args;
struct ufsmount *ump;
register struct fs *fs;
register struct mfsnode *mfsp;
size_t size;
int flags, error;
if (error = copyin(data, (caddr_t)&args, sizeof (struct mfs_args)))
return (error);
if (mp->mnt_flag & MNT_UPDATE) {
ump = VFSTOUFS(mp);
fs = ump->um_fs;
if (fs->fs_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) {
flags = WRITECLOSE;
if (mp->mnt_flag & MNT_FORCE)
flags |= FORCECLOSE;
if (vfs_busy(mp))
return (EBUSY);
error = ffs_flushfiles(mp, flags, p);
vfs_unbusy(mp);
if (error)
return (error);
}
if (fs->fs_ronly && (mp->mnt_kern_flag & MNTK_WANTRDWR))
fs->fs_ronly = 0;
#ifdef EXPORTMFS
if (args.fspec == 0)
return (vfs_export(mp, &ump->um_export, &args.export));
#endif
return (0);
}
MALLOC(mfsp, struct mfsnode *, sizeof(struct mfsnode), M_MFSNODE, M_WAITOK);
error = getnewvnode(VT_MFS, (struct mount *)0, mfs_vnodeop_p, &devvp);
if (error) {
FREE(mfsp, M_MFSNODE);
return (error);
}
devvp->v_type = VBLK;
if (checkalias(devvp, makedev(255, mfs_minor++), (struct mount *)0))
panic("mfs_mount: dup dev");
devvp->v_data = mfsp;
mfsp->mfs_baseoff = args.base;
mfsp->mfs_size = args.size;
mfsp->mfs_vnode = devvp;
mfsp->mfs_pid = p->p_pid;
mfsp->mfs_buflist = (struct buf *)0;
if (error = ffs_mountfs(devvp, mp, p)) {
mfsp->mfs_buflist = (struct buf *)-1;
vrele(devvp);
return (error);
}
ump = VFSTOUFS(mp);
fs = ump->um_fs;
(void) copyinstr(path, fs->fs_fsmnt, sizeof(fs->fs_fsmnt) - 1, &size);
bzero(fs->fs_fsmnt + size, sizeof(fs->fs_fsmnt) - size);
bcopy(fs->fs_fsmnt, mp->mnt_stat.f_mntonname, MNAMELEN);
(void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1,
&size);
bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
return (0);
}
int mfs_pri = PWAIT | PCATCH;
int
mfs_start(mp, flags, p)
struct mount *mp;
int flags;
struct proc *p;
{
register struct vnode *vp = VFSTOUFS(mp)->um_devvp;
register struct mfsnode *mfsp = VTOMFS(vp);
register struct buf *bp;
register caddr_t base;
int error = 0;
base = mfsp->mfs_baseoff;
while (mfsp->mfs_buflist != (struct buf *)(-1)) {
while (bp = mfsp->mfs_buflist) {
mfsp->mfs_buflist = bp->b_actf;
mfs_doio(bp, base);
wakeup((caddr_t)bp);
}
if (error = tsleep((caddr_t)vp, mfs_pri, "mfsidl", 0))
if (dounmount(mp, 0, p) != 0)
CLRSIG(p, CURSIG(p));
}
return (error);
}
mfs_statfs(mp, sbp, p)
struct mount *mp;
struct statfs *sbp;
struct proc *p;
{
int error;
error = ffs_statfs(mp, sbp, p);
#ifdef COMPAT_09
sbp->f_type = 3;
#else
sbp->f_type = 0;
#endif
strncpy(&sbp->f_fstypename[0], mp->mnt_op->vfs_name, MFSNAMELEN);
sbp->f_fstypename[MFSNAMELEN] = '\0';
return (error);
}