/*
* mp - path - addr in user space of mount point (ie /usr or whatever)
* data - addr in user space of mount params including the name of the block
* special file to treat as a filesystem.
*/
static int
msdosfs_mount(struct mount *mp)
{
struct vnode *devvp; /* vnode for blk device to mount */
struct thread *td;
/* msdosfs specific mount control block */
struct msdosfsmount *pmp = NULL;
struct nameidata ndp;
int error, flags;
accmode_t accmode;
char *from;
td = curthread;
if (vfs_filteropt(mp->mnt_optnew, msdosfs_opts))
return (EINVAL);
/*
* If updating, check whether changing from read-only to
* read/write; if there is no device name, that's all we do.
*/
if (mp->mnt_flag & MNT_UPDATE) {
pmp = VFSTOMSDOSFS(mp);
if (vfs_flagopt(mp->mnt_optnew, "export", NULL, 0)) {
/*
* Forbid export requests if filesystem has
* MSDOSFS_LARGEFS flag set.
*/
if ((pmp->pm_flags & MSDOSFS_LARGEFS) != 0) {
vfs_mount_error(mp,
"MSDOSFS_LARGEFS flag set, cannot export");
return (EOPNOTSUPP);
}
}
if (!(pmp->pm_flags & MSDOSFSMNT_RONLY) &&
vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0)) {
error = VFS_SYNC(mp, MNT_WAIT);
if (error)
return (error);
flags = WRITECLOSE;
if (mp->mnt_flag & MNT_FORCE)
flags |= FORCECLOSE;
error = vflush(mp, 0, flags, td);
if (error)
return (error);
/*
* Now the volume is clean. Mark it so while the
* device is still rw.
*/
error = markvoldirty(pmp, 0);
if (error) {
(void)markvoldirty(pmp, 1);
return (error);
}
/* Downgrade the device from rw to ro. */
DROP_GIANT();
g_topology_lock();
error = g_access(pmp->pm_cp, 0, -1, 0);
g_topology_unlock();
PICKUP_GIANT();
if (error) {
(void)markvoldirty(pmp, 1);
return (error);
}
/*
* Backing out after an error was painful in the
* above. Now we are committed to succeeding.
*/
pmp->pm_fmod = 0;
pmp->pm_flags |= MSDOSFSMNT_RONLY;
MNT_ILOCK(mp);
mp->mnt_flag |= MNT_RDONLY;
MNT_IUNLOCK(mp);
} else if ((pmp->pm_flags & MSDOSFSMNT_RONLY) &&
!vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0)) {
/*
* If upgrade to read-write by non-root, then verify
* that user has necessary permissions on the device.
*/
devvp = pmp->pm_devvp;
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
error = VOP_ACCESS(devvp, VREAD | VWRITE,
td->td_ucred, td);
if (error)
error = priv_check(td, PRIV_VFS_MOUNT_PERM);
if (error) {
VOP_UNLOCK(devvp, 0);
return (error);
}
VOP_UNLOCK(devvp, 0);
DROP_GIANT();
g_topology_lock();
error = g_access(pmp->pm_cp, 0, 1, 0);
g_topology_unlock();
PICKUP_GIANT();
if (error)
return (error);
pmp->pm_fmod = 1;
pmp->pm_flags &= ~MSDOSFSMNT_RONLY;
MNT_ILOCK(mp);
mp->mnt_flag &= ~MNT_RDONLY;
MNT_IUNLOCK(mp);
/* Now that the volume is modifiable, mark it dirty. */
error = markvoldirty(pmp, 1);
if (error)
return (error);
}
}
/*
* Not an update, or updating the name: look up the name
* and verify that it refers to a sensible disk device.
*/
if (vfs_getopt(mp->mnt_optnew, "from", (void **)&from, NULL))
return (EINVAL);
NDINIT(&ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, from, td);
error = namei(&ndp);
if (error)
return (error);
devvp = ndp.ni_vp;
NDFREE(&ndp, NDF_ONLY_PNBUF);
if (!vn_isdisk(devvp, &error)) {
vput(devvp);
return (error);
}
/*
* If mount by non-root, then verify that user has necessary
* permissions on the device.
*/
accmode = VREAD;
if ((mp->mnt_flag & MNT_RDONLY) == 0)
accmode |= VWRITE;
error = VOP_ACCESS(devvp, accmode, td->td_ucred, td);
if (error)
error = priv_check(td, PRIV_VFS_MOUNT_PERM);
if (error) {
vput(devvp);
return (error);
}
if ((mp->mnt_flag & MNT_UPDATE) == 0) {
error = mountmsdosfs(devvp, mp);
#ifdef MSDOSFS_DEBUG /* only needed for the printf below */
pmp = VFSTOMSDOSFS(mp);
#endif
} else {
vput(devvp);
if (devvp != pmp->pm_devvp)
return (EINVAL); /* XXX needs translation */
}
if (error) {
vrele(devvp);
return (error);
}
error = update_mp(mp, td);
if (error) {
if ((mp->mnt_flag & MNT_UPDATE) == 0)
msdosfs_unmount(mp, MNT_FORCE);
return error;
}
if (devvp->v_type == VCHR && devvp->v_rdev != NULL)
devvp->v_rdev->si_mountpt = mp;
vfs_mountedfrom(mp, from);
#ifdef MSDOSFS_DEBUG
printf("msdosfs_mount(): mp %p, pmp %p, inusemap %p\n", mp, pmp, pmp->pm_inusemap);
#endif
return (0);
}
/*
* VFS Operations.
*
* mount system call
*/
static int
ext2_mount(struct mount *mp)
{
struct vfsoptlist *opts;
struct vnode *devvp;
struct thread *td;
struct ext2mount *ump = NULL;
struct m_ext2fs *fs;
struct nameidata nd, *ndp = &nd;
accmode_t accmode;
char *path, *fspec;
int error, flags, len;
td = curthread;
opts = mp->mnt_optnew;
if (vfs_filteropt(opts, ext2_opts))
return (EINVAL);
vfs_getopt(opts, "fspath", (void **)&path, NULL);
/* Double-check the length of path.. */
if (strlen(path) >= MAXMNTLEN - 1)
return (ENAMETOOLONG);
fspec = NULL;
error = vfs_getopt(opts, "from", (void **)&fspec, &len);
if (!error && fspec[len - 1] != '\0')
return (EINVAL);
/*
* If updating, check whether changing from read-only to
* read/write; if there is no device name, that's all we do.
*/
if (mp->mnt_flag & MNT_UPDATE) {
ump = VFSTOEXT2(mp);
fs = ump->um_e2fs;
error = 0;
if (fs->e2fs_ronly == 0 &&
vfs_flagopt(opts, "ro", NULL, 0)) {
error = VFS_SYNC(mp, MNT_WAIT);
if (error)
return (error);
flags = WRITECLOSE;
if (mp->mnt_flag & MNT_FORCE)
flags |= FORCECLOSE;
error = ext2_flushfiles(mp, flags, td);
if ( error == 0 && fs->e2fs_wasvalid && ext2_cgupdate(ump, MNT_WAIT) == 0) {
fs->e2fs->e2fs_state |= E2FS_ISCLEAN;
ext2_sbupdate(ump, MNT_WAIT);
}
fs->e2fs_ronly = 1;
vfs_flagopt(opts, "ro", &mp->mnt_flag, MNT_RDONLY);
DROP_GIANT();
g_topology_lock();
g_access(ump->um_cp, 0, -1, 0);
g_topology_unlock();
PICKUP_GIANT();
}
if (!error && (mp->mnt_flag & MNT_RELOAD))
error = ext2_reload(mp, td);
if (error)
return (error);
devvp = ump->um_devvp;
if (fs->e2fs_ronly && !vfs_flagopt(opts, "ro", NULL, 0)) {
if (ext2_check_sb_compat(fs->e2fs, devvp->v_rdev, 0))
return (EPERM);
/*
* If upgrade to read-write by non-root, then verify
* that user has necessary permissions on the device.
*/
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
error = VOP_ACCESS(devvp, VREAD | VWRITE,
td->td_ucred, td);
if (error)
error = priv_check(td, PRIV_VFS_MOUNT_PERM);
if (error) {
VOP_UNLOCK(devvp, 0);
return (error);
}
VOP_UNLOCK(devvp, 0);
DROP_GIANT();
g_topology_lock();
error = g_access(ump->um_cp, 0, 1, 0);
g_topology_unlock();
PICKUP_GIANT();
if (error)
return (error);
if ((fs->e2fs->e2fs_state & E2FS_ISCLEAN) == 0 ||
(fs->e2fs->e2fs_state & E2FS_ERRORS)) {
if (mp->mnt_flag & MNT_FORCE) {
printf(
"WARNING: %s was not properly dismounted\n", fs->e2fs_fsmnt);
} else {
printf(
"WARNING: R/W mount of %s denied. Filesystem is not clean - run fsck\n",
fs->e2fs_fsmnt);
return (EPERM);
}
}
fs->e2fs->e2fs_state &= ~E2FS_ISCLEAN;
(void)ext2_cgupdate(ump, MNT_WAIT);
fs->e2fs_ronly = 0;
MNT_ILOCK(mp);
mp->mnt_flag &= ~MNT_RDONLY;
MNT_IUNLOCK(mp);
}
if (vfs_flagopt(opts, "export", NULL, 0)) {
/* Process export requests in vfs_mount.c. */
return (error);
}
}
/*
* Not an update, or updating the name: look up the name
* and verify that it refers to a sensible disk device.
*/
if (fspec == NULL)
return (EINVAL);
NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, fspec, td);
if ((error = namei(ndp)) != 0)
return (error);
NDFREE(ndp, NDF_ONLY_PNBUF);
devvp = ndp->ni_vp;
if (!vn_isdisk(devvp, &error)) {
vput(devvp);
return (error);
}
/*
* If mount by non-root, then verify that user has necessary
* permissions on the device.
*
* XXXRW: VOP_ACCESS() enough?
*/
accmode = VREAD;
if ((mp->mnt_flag & MNT_RDONLY) == 0)
accmode |= VWRITE;
error = VOP_ACCESS(devvp, accmode, td->td_ucred, td);
if (error)
error = priv_check(td, PRIV_VFS_MOUNT_PERM);
if (error) {
vput(devvp);
return (error);
}
if ((mp->mnt_flag & MNT_UPDATE) == 0) {
error = ext2_mountfs(devvp, mp);
} else {
if (devvp != ump->um_devvp) {
vput(devvp);
return (EINVAL); /* needs translation */
} else
vput(devvp);
}
if (error) {
vrele(devvp);
return (error);
}
ump = VFSTOEXT2(mp);
fs = ump->um_e2fs;
/*
* Note that this strncpy() is ok because of a check at the start
* of ext2_mount().
*/
strncpy(fs->e2fs_fsmnt, path, MAXMNTLEN);
fs->e2fs_fsmnt[MAXMNTLEN - 1] = '\0';
vfs_mountedfrom(mp, fspec);
return (0);
}
static int
smbfs_mount(struct mount *mp)
{
struct smbmount *smp = NULL;
struct smb_vc *vcp;
struct smb_share *ssp = NULL;
struct vnode *vp;
struct thread *td;
struct smb_dev *dev;
struct smb_cred *scred;
int error, v;
char *pc, *pe;
dev = NULL;
td = curthread;
if (mp->mnt_flag & (MNT_UPDATE | MNT_ROOTFS))
return EOPNOTSUPP;
if (vfs_filteropt(mp->mnt_optnew, smbfs_opts)) {
vfs_mount_error(mp, "%s", "Invalid option");
return (EINVAL);
}
scred = smbfs_malloc_scred();
smb_makescred(scred, td, td->td_ucred);
/* Ask userspace of `fd`, the file descriptor of this session */
if (1 != vfs_scanopt(mp->mnt_optnew, "fd", "%d", &v)) {
vfs_mount_error(mp, "No fd option");
smbfs_free_scred(scred);
return (EINVAL);
}
error = smb_dev2share(v, SMBM_EXEC, scred, &ssp, &dev);
smp = malloc(sizeof(*smp), M_SMBFSDATA, M_WAITOK | M_ZERO);
if (error) {
printf("invalid device handle %d (%d)\n", v, error);
vfs_mount_error(mp, "invalid device handle %d %d\n", v, error);
smbfs_free_scred(scred);
free(smp, M_SMBFSDATA);
return error;
}
vcp = SSTOVC(ssp);
smb_share_unlock(ssp);
mp->mnt_stat.f_iosize = SSTOVC(ssp)->vc_txmax;
mp->mnt_data = smp;
smp->sm_share = ssp;
smp->sm_root = NULL;
smp->sm_dev = dev;
if (1 != vfs_scanopt(mp->mnt_optnew,
"caseopt", "%d", &smp->sm_caseopt)) {
vfs_mount_error(mp, "Invalid caseopt");
error = EINVAL;
goto bad;
}
if (1 != vfs_scanopt(mp->mnt_optnew, "uid", "%d", &v)) {
vfs_mount_error(mp, "Invalid uid");
error = EINVAL;
goto bad;
}
smp->sm_uid = v;
if (1 != vfs_scanopt(mp->mnt_optnew, "gid", "%d", &v)) {
vfs_mount_error(mp, "Invalid gid");
error = EINVAL;
goto bad;
}
smp->sm_gid = v;
if (1 != vfs_scanopt(mp->mnt_optnew, "file_mode", "%d", &v)) {
vfs_mount_error(mp, "Invalid file_mode");
error = EINVAL;
goto bad;
}
smp->sm_file_mode = (v & (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG;
if (1 != vfs_scanopt(mp->mnt_optnew, "dir_mode", "%d", &v)) {
vfs_mount_error(mp, "Invalid dir_mode");
error = EINVAL;
goto bad;
}
smp->sm_dir_mode = (v & (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR;
vfs_flagopt(mp->mnt_optnew,
"nolong", &smp->sm_flags, SMBFS_MOUNT_NO_LONG);
pc = mp->mnt_stat.f_mntfromname;
pe = pc + sizeof(mp->mnt_stat.f_mntfromname);
bzero(pc, MNAMELEN);
*pc++ = '/';
*pc++ = '/';
pc = strchr(strncpy(pc, vcp->vc_username, pe - pc - 2), 0);
if (pc < pe-1) {
*(pc++) = '@';
pc = strchr(strncpy(pc, vcp->vc_srvname, pe - pc - 2), 0);
if (pc < pe - 1) {
*(pc++) = '/';
strncpy(pc, ssp->ss_name, pe - pc - 2);
}
}
vfs_getnewfsid(mp);
error = smbfs_root(mp, LK_EXCLUSIVE, &vp);
if (error) {
vfs_mount_error(mp, "smbfs_root error: %d", error);
goto bad;
}
VOP_UNLOCK(vp, 0);
SMBVDEBUG("root.v_usecount = %d\n", vrefcnt(vp));
#ifdef DIAGNOSTIC
SMBERROR("mp=%p\n", mp);
#endif
smbfs_free_scred(scred);
return error;
bad:
if (ssp)
smb_share_put(ssp, scred);
smbfs_free_scred(scred);
SMB_LOCK();
if (error && smp->sm_dev == dev) {
smp->sm_dev = NULL;
sdp_trydestroy(dev);
}
SMB_UNLOCK();
free(smp, M_SMBFSDATA);
return error;
}
static int
ntfs_mount(struct mount *mp)
{
int err = 0, error;
struct vnode *devvp;
struct nameidata ndp;
struct thread *td;
char *from;
td = curthread;
if (vfs_filteropt(mp->mnt_optnew, ntfs_opts))
return (EINVAL);
/* Force mount as read-only. */
MNT_ILOCK(mp);
mp->mnt_flag |= MNT_RDONLY;
MNT_IUNLOCK(mp);
from = vfs_getopts(mp->mnt_optnew, "from", &error);
if (error)
return (error);
/*
* If updating, check whether changing from read-only to
* read/write.
*/
if (mp->mnt_flag & MNT_UPDATE) {
if (vfs_flagopt(mp->mnt_optnew, "export", NULL, 0)) {
/* Process export requests in vfs_mount.c */
return (0);
} else {
printf("ntfs_mount(): MNT_UPDATE not supported\n");
return (EINVAL);
}
}
/*
* Not an update, or updating the name: look up the name
* and verify that it refers to a sensible block device.
*/
NDINIT(&ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, from, td);
err = namei(&ndp);
if (err)
return (err);
NDFREE(&ndp, NDF_ONLY_PNBUF);
devvp = ndp.ni_vp;
if (!vn_isdisk(devvp, &err)) {
vput(devvp);
return (err);
}
/*
* If mount by non-root, then verify that user has necessary
* permissions on the device.
*/
err = VOP_ACCESS(devvp, VREAD, td->td_ucred, td);
if (err)
err = priv_check(td, PRIV_VFS_MOUNT_PERM);
if (err) {
vput(devvp);
return (err);
}
/*
* Since this is a new mount, we want the names for the device and
* the mount point copied in. If an error occurs, the mountpoint is
* discarded by the upper level code. Note that vfs_mount() handles
* copying the mountpoint f_mntonname for us, so we don't have to do
* it here unless we want to set it to something other than "path"
* for some rason.
*/
err = ntfs_mountfs(devvp, mp, td);
if (err == 0) {
/* Save "mounted from" info for mount point. */
vfs_mountedfrom(mp, from);
} else
vrele(devvp);
return (err);
}
/*ARGSUSED*/
int
coda_mount(struct mount *vfsp)
{
struct vnode *dvp;
struct cnode *cp;
struct cdev *dev;
struct coda_mntinfo *mi;
struct vnode *rootvp;
struct CodaFid rootfid = INVAL_FID;
struct CodaFid ctlfid = CTL_FID;
int error;
struct nameidata ndp;
ENTRY;
char *from;
if (vfs_filteropt(vfsp->mnt_optnew, coda_opts))
return (EINVAL);
from = vfs_getopts(vfsp->mnt_optnew, "from", &error);
if (error)
return (error);
coda_vfsopstats_init();
coda_vnodeopstats_init();
MARK_ENTRY(CODA_MOUNT_STATS);
if (CODA_MOUNTED(vfsp)) {
MARK_INT_FAIL(CODA_MOUNT_STATS);
return (EBUSY);
}
/*
* Validate mount device. Similar to getmdev().
*/
NDINIT(&ndp, LOOKUP, FOLLOW, UIO_SYSSPACE, from, curthread);
error = namei(&ndp);
dvp = ndp.ni_vp;
if (error) {
MARK_INT_FAIL(CODA_MOUNT_STATS);
return (error);
}
if (dvp->v_type != VCHR) {
MARK_INT_FAIL(CODA_MOUNT_STATS);
vrele(dvp);
NDFREE(&ndp, NDF_ONLY_PNBUF);
return (ENXIO);
}
dev = dvp->v_rdev;
vrele(dvp);
NDFREE(&ndp, NDF_ONLY_PNBUF);
/*
* Initialize the mount record and link it to the vfs struct.
*/
mi = dev2coda_mntinfo(dev);
if (!mi) {
MARK_INT_FAIL(CODA_MOUNT_STATS);
printf("Coda mount: %s is not a cfs device\n", from);
return (ENXIO);
}
if (!VC_OPEN(&mi->mi_vcomm)) {
MARK_INT_FAIL(CODA_MOUNT_STATS);
return (ENODEV);
}
/*
* No initialization (here) of mi_vcomm!
*/
vfsp->mnt_data = mi;
vfs_getnewfsid (vfsp);
mi->mi_vfsp = vfsp;
mi->mi_started = 0; /* XXX See coda_root() */
/*
* Make a root vnode to placate the Vnode interface, but don't
* actually make the CODA_ROOT call to venus until the first call to
* coda_root in case a server is down while venus is starting.
*/
cp = make_coda_node(&rootfid, vfsp, VDIR);
rootvp = CTOV(cp);
rootvp->v_vflag |= VV_ROOT;
cp = make_coda_node(&ctlfid, vfsp, VREG);
coda_ctlvp = CTOV(cp);
/*
* Add vfs and rootvp to chain of vfs hanging off mntinfo.
*/
mi->mi_vfsp = vfsp;
mi->mi_rootvp = rootvp;
vfs_mountedfrom(vfsp, from);
/*
* Error is currently guaranteed to be zero, but in case some code
* changes...
*/
CODADEBUG(1, myprintf(("coda_mount returned %d\n", error)););
static int vboxvfs_mount(struct mount *mp, struct thread *td)
{
int rc;
char *pszShare;
int cbShare, cbOption;
int uid = 0, gid = 0;
struct sf_glob_info *pShFlGlobalInfo;
SHFLSTRING *pShFlShareName = NULL;
int cbShFlShareName;
printf("%s: Enter\n", __FUNCTION__);
if (mp->mnt_flag & (MNT_UPDATE | MNT_ROOTFS))
return EOPNOTSUPP;
if (vfs_filteropt(mp->mnt_optnew, vboxvfs_opts))
{
vfs_mount_error(mp, "%s", "Invalid option");
return EINVAL;
}
rc = vfs_getopt(mp->mnt_optnew, "from", (void **)&pszShare, &cbShare);
if (rc || pszShare[cbShare-1] != '\0' || cbShare > 0xfffe)
return EINVAL;
rc = vfs_getopt(mp->mnt_optnew, "gid", (void **)&gid, &cbOption);
if ((rc != ENOENT) && (rc || cbOption != sizeof(gid)))
return EINVAL;
rc = vfs_getopt(mp->mnt_optnew, "uid", (void **)&uid, &cbOption);
if ((rc != ENOENT) && (rc || cbOption != sizeof(uid)))
return EINVAL;
pShFlGlobalInfo = RTMemAllocZ(sizeof(struct sf_glob_info));
if (!pShFlGlobalInfo)
return ENOMEM;
cbShFlShareName = offsetof (SHFLSTRING, String.utf8) + cbShare + 1;
pShFlShareName = RTMemAllocZ(cbShFlShareName);
if (!pShFlShareName)
return VERR_NO_MEMORY;
pShFlShareName->u16Length = cbShare;
pShFlShareName->u16Size = cbShare + 1;
memcpy (pShFlShareName->String.utf8, pszShare, cbShare + 1);
rc = VbglR0SfMapFolder (&g_vboxSFClient, pShFlShareName, &pShFlGlobalInfo->map);
RTMemFree(pShFlShareName);
if (RT_FAILURE (rc))
{
RTMemFree(pShFlGlobalInfo);
printf("VbglR0SfMapFolder failed rc=%d\n", rc);
return EPROTO;
}
pShFlGlobalInfo->uid = uid;
pShFlGlobalInfo->gid = gid;
mp->mnt_data = pShFlGlobalInfo;
/** @todo root vnode. */
vfs_getnewfsid(mp);
vfs_mountedfrom(mp, pszShare);
printf("%s: Leave rc=0\n", __FUNCTION__);
return 0;
}
static int
_xfs_mount(struct mount *mp)
{
struct xfsmount *xmp;
struct xfs_vnode *rootvp;
struct ucred *curcred;
struct vnode *rvp, *devvp;
struct cdev *ddev;
struct g_consumer *cp;
struct thread *td;
int error;
td = curthread;
ddev = NULL;
cp = NULL;
if (vfs_filteropt(mp->mnt_optnew, xfs_opts))
return (EINVAL);
if (mp->mnt_flag & MNT_UPDATE)
return (0);
if ((mp->mnt_flag & MNT_RDONLY) == 0)
return (EPERM);
xmp = xfsmount_allocate(mp);
if (xmp == NULL)
return (ENOMEM);
if((error = _xfs_param_copyin(mp, td)) != 0)
goto fail;
curcred = td->td_ucred;
XVFS_MOUNT(XFSTOVFS(xmp), &xmp->m_args, curcred, error);
if (error)
goto fail;
XVFS_ROOT(XFSTOVFS(xmp), &rootvp, error);
ddev = XFS_VFSTOM(XFSTOVFS(xmp))->m_ddev_targp->dev;
devvp = XFS_VFSTOM(XFSTOVFS(xmp))->m_ddev_targp->specvp;
if (error)
goto fail_unmount;
if (ddev->si_iosize_max != 0)
mp->mnt_iosize_max = ddev->si_iosize_max;
if (mp->mnt_iosize_max > MAXPHYS)
mp->mnt_iosize_max = MAXPHYS;
mp->mnt_flag |= MNT_LOCAL;
mp->mnt_stat.f_fsid.val[0] = dev2udev(ddev);
mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
if ((error = VFS_STATFS(mp, &mp->mnt_stat)) != 0)
goto fail_unmount;
rvp = rootvp->v_vnode;
rvp->v_vflag |= VV_ROOT;
VN_RELE(rootvp);
return (0);
fail_unmount:
XVFS_UNMOUNT(XFSTOVFS(xmp), 0, curcred, error);
if (devvp != NULL) {
cp = devvp->v_bufobj.bo_private;
if (cp != NULL) {
DROP_GIANT();
g_topology_lock();
g_vfs_close(cp);
g_topology_unlock();
PICKUP_GIANT();
}
}
fail:
if (xmp != NULL)
xfsmount_deallocate(xmp);
return (error);
}
/* ARGSUSED */
static int
nfs_mount(struct mount *mp)
{
struct nfs_args args = {
.version = NFS_ARGSVERSION,
.addr = NULL,
.addrlen = sizeof (struct sockaddr_in),
.sotype = SOCK_STREAM,
.proto = 0,
.fh = NULL,
.fhsize = 0,
.flags = NFSMNT_RESVPORT,
.wsize = NFS_WSIZE,
.rsize = NFS_RSIZE,
.readdirsize = NFS_READDIRSIZE,
.timeo = 10,
.retrans = NFS_RETRANS,
.maxgrouplist = NFS_MAXGRPS,
.readahead = NFS_DEFRAHEAD,
.wcommitsize = 0, /* was: NQ_DEFLEASE */
.deadthresh = NFS_MAXDEADTHRESH, /* was: NQ_DEADTHRESH */
.hostname = NULL,
/* args version 4 */
.acregmin = NFS_MINATTRTIMO,
.acregmax = NFS_MAXATTRTIMO,
.acdirmin = NFS_MINDIRATTRTIMO,
.acdirmax = NFS_MAXDIRATTRTIMO,
};
int error, ret, has_nfs_args_opt;
int has_addr_opt, has_fh_opt, has_hostname_opt;
struct sockaddr *nam;
struct vnode *vp;
char hst[MNAMELEN];
size_t len;
u_char nfh[NFSX_V3FHMAX];
char *opt;
int nametimeo = NFS_DEFAULT_NAMETIMEO;
int negnametimeo = NFS_DEFAULT_NEGNAMETIMEO;
has_nfs_args_opt = 0;
has_addr_opt = 0;
has_fh_opt = 0;
has_hostname_opt = 0;
if (vfs_filteropt(mp->mnt_optnew, nfs_opts)) {
error = EINVAL;
goto out;
}
if ((mp->mnt_flag & (MNT_ROOTFS | MNT_UPDATE)) == MNT_ROOTFS) {
error = nfs_mountroot(mp);
goto out;
}
/*
* The old mount_nfs program passed the struct nfs_args
* from userspace to kernel. The new mount_nfs program
* passes string options via nmount() from userspace to kernel
* and we populate the struct nfs_args in the kernel.
*/
if (vfs_getopt(mp->mnt_optnew, "nfs_args", NULL, NULL) == 0) {
error = vfs_copyopt(mp->mnt_optnew, "nfs_args", &args,
sizeof args);
if (error)
goto out;
if (args.version != NFS_ARGSVERSION) {
error = EPROGMISMATCH;
goto out;
}
has_nfs_args_opt = 1;
}
if (vfs_getopt(mp->mnt_optnew, "dumbtimer", NULL, NULL) == 0)
args.flags |= NFSMNT_DUMBTIMR;
if (vfs_getopt(mp->mnt_optnew, "noconn", NULL, NULL) == 0)
args.flags |= NFSMNT_NOCONN;
if (vfs_getopt(mp->mnt_optnew, "conn", NULL, NULL) == 0)
args.flags |= NFSMNT_NOCONN;
if (vfs_getopt(mp->mnt_optnew, "nolockd", NULL, NULL) == 0)
args.flags |= NFSMNT_NOLOCKD;
if (vfs_getopt(mp->mnt_optnew, "lockd", NULL, NULL) == 0)
args.flags &= ~NFSMNT_NOLOCKD;
if (vfs_getopt(mp->mnt_optnew, "intr", NULL, NULL) == 0)
args.flags |= NFSMNT_INT;
if (vfs_getopt(mp->mnt_optnew, "rdirplus", NULL, NULL) == 0)
args.flags |= NFSMNT_RDIRPLUS;
if (vfs_getopt(mp->mnt_optnew, "resvport", NULL, NULL) == 0)
args.flags |= NFSMNT_RESVPORT;
if (vfs_getopt(mp->mnt_optnew, "noresvport", NULL, NULL) == 0)
args.flags &= ~NFSMNT_RESVPORT;
if (vfs_getopt(mp->mnt_optnew, "soft", NULL, NULL) == 0)
args.flags |= NFSMNT_SOFT;
if (vfs_getopt(mp->mnt_optnew, "hard", NULL, NULL) == 0)
args.flags &= ~NFSMNT_SOFT;
if (vfs_getopt(mp->mnt_optnew, "mntudp", NULL, NULL) == 0)
args.sotype = SOCK_DGRAM;
if (vfs_getopt(mp->mnt_optnew, "udp", NULL, NULL) == 0)
args.sotype = SOCK_DGRAM;
if (vfs_getopt(mp->mnt_optnew, "tcp", NULL, NULL) == 0)
args.sotype = SOCK_STREAM;
if (vfs_getopt(mp->mnt_optnew, "nfsv3", NULL, NULL) == 0)
args.flags |= NFSMNT_NFSV3;
if (vfs_getopt(mp->mnt_optnew, "nocto", NULL, NULL) == 0)
args.flags |= NFSMNT_NOCTO;
if (vfs_getopt(mp->mnt_optnew, "readdirsize", (void **)&opt, NULL) == 0) {
if (opt == NULL) {
vfs_mount_error(mp, "illegal readdirsize");
error = EINVAL;
goto out;
}
ret = sscanf(opt, "%d", &args.readdirsize);
if (ret != 1 || args.readdirsize <= 0) {
vfs_mount_error(mp, "illegal readdirsize: %s",
opt);
error = EINVAL;
goto out;
}
args.flags |= NFSMNT_READDIRSIZE;
}
if (vfs_getopt(mp->mnt_optnew, "readahead", (void **)&opt, NULL) == 0) {
if (opt == NULL) {
vfs_mount_error(mp, "illegal readahead");
error = EINVAL;
goto out;
}
ret = sscanf(opt, "%d", &args.readahead);
if (ret != 1 || args.readahead <= 0) {
vfs_mount_error(mp, "illegal readahead: %s",
opt);
error = EINVAL;
goto out;
}
args.flags |= NFSMNT_READAHEAD;
}
if (vfs_getopt(mp->mnt_optnew, "wsize", (void **)&opt, NULL) == 0) {
if (opt == NULL) {
vfs_mount_error(mp, "illegal wsize");
error = EINVAL;
goto out;
}
ret = sscanf(opt, "%d", &args.wsize);
if (ret != 1 || args.wsize <= 0) {
vfs_mount_error(mp, "illegal wsize: %s",
opt);
error = EINVAL;
goto out;
}
args.flags |= NFSMNT_WSIZE;
}
if (vfs_getopt(mp->mnt_optnew, "rsize", (void **)&opt, NULL) == 0) {
if (opt == NULL) {
vfs_mount_error(mp, "illegal rsize");
error = EINVAL;
goto out;
}
ret = sscanf(opt, "%d", &args.rsize);
if (ret != 1 || args.rsize <= 0) {
vfs_mount_error(mp, "illegal wsize: %s",
opt);
error = EINVAL;
goto out;
}
args.flags |= NFSMNT_RSIZE;
}
if (vfs_getopt(mp->mnt_optnew, "retrans", (void **)&opt, NULL) == 0) {
if (opt == NULL) {
vfs_mount_error(mp, "illegal retrans");
error = EINVAL;
goto out;
}
ret = sscanf(opt, "%d", &args.retrans);
if (ret != 1 || args.retrans <= 0) {
vfs_mount_error(mp, "illegal retrans: %s",
opt);
error = EINVAL;
goto out;
}
args.flags |= NFSMNT_RETRANS;
}
if (vfs_getopt(mp->mnt_optnew, "acregmin", (void **)&opt, NULL) == 0) {
ret = sscanf(opt, "%d", &args.acregmin);
if (ret != 1 || args.acregmin < 0) {
vfs_mount_error(mp, "illegal acregmin: %s",
opt);
error = EINVAL;
goto out;
}
args.flags |= NFSMNT_ACREGMIN;
}
if (vfs_getopt(mp->mnt_optnew, "acregmax", (void **)&opt, NULL) == 0) {
ret = sscanf(opt, "%d", &args.acregmax);
if (ret != 1 || args.acregmax < 0) {
vfs_mount_error(mp, "illegal acregmax: %s",
opt);
error = EINVAL;
goto out;
}
args.flags |= NFSMNT_ACREGMAX;
}
if (vfs_getopt(mp->mnt_optnew, "acdirmin", (void **)&opt, NULL) == 0) {
ret = sscanf(opt, "%d", &args.acdirmin);
if (ret != 1 || args.acdirmin < 0) {
vfs_mount_error(mp, "illegal acdirmin: %s",
opt);
error = EINVAL;
goto out;
}
args.flags |= NFSMNT_ACDIRMIN;
}
if (vfs_getopt(mp->mnt_optnew, "acdirmax", (void **)&opt, NULL) == 0) {
ret = sscanf(opt, "%d", &args.acdirmax);
if (ret != 1 || args.acdirmax < 0) {
vfs_mount_error(mp, "illegal acdirmax: %s",
opt);
error = EINVAL;
goto out;
}
args.flags |= NFSMNT_ACDIRMAX;
}
if (vfs_getopt(mp->mnt_optnew, "wcommitsize", (void **)&opt, NULL) == 0) {
ret = sscanf(opt, "%d", &args.wcommitsize);
if (ret != 1 || args.wcommitsize < 0) {
vfs_mount_error(mp, "illegal wcommitsize: %s", opt);
error = EINVAL;
goto out;
}
args.flags |= NFSMNT_WCOMMITSIZE;
}
if (vfs_getopt(mp->mnt_optnew, "deadthresh", (void **)&opt, NULL) == 0) {
ret = sscanf(opt, "%d", &args.deadthresh);
if (ret != 1 || args.deadthresh <= 0) {
vfs_mount_error(mp, "illegal deadthresh: %s",
opt);
error = EINVAL;
goto out;
}
args.flags |= NFSMNT_DEADTHRESH;
}
if (vfs_getopt(mp->mnt_optnew, "timeout", (void **)&opt, NULL) == 0) {
ret = sscanf(opt, "%d", &args.timeo);
if (ret != 1 || args.timeo <= 0) {
vfs_mount_error(mp, "illegal timeout: %s",
opt);
error = EINVAL;
goto out;
}
args.flags |= NFSMNT_TIMEO;
}
if (vfs_getopt(mp->mnt_optnew, "maxgroups", (void **)&opt, NULL) == 0) {
ret = sscanf(opt, "%d", &args.maxgrouplist);
if (ret != 1 || args.maxgrouplist <= 0) {
vfs_mount_error(mp, "illegal maxgroups: %s",
opt);
error = EINVAL;
goto out;
}
args.flags |= NFSMNT_MAXGRPS;
}
if (vfs_getopt(mp->mnt_optnew, "nametimeo", (void **)&opt, NULL) == 0) {
ret = sscanf(opt, "%d", &nametimeo);
if (ret != 1 || nametimeo < 0) {
vfs_mount_error(mp, "illegal nametimeo: %s", opt);
error = EINVAL;
goto out;
}
}
if (vfs_getopt(mp->mnt_optnew, "negnametimeo", (void **)&opt, NULL)
== 0) {
ret = sscanf(opt, "%d", &negnametimeo);
if (ret != 1 || negnametimeo < 0) {
vfs_mount_error(mp, "illegal negnametimeo: %s",
opt);
error = EINVAL;
goto out;
}
}
if (vfs_getopt(mp->mnt_optnew, "addr", (void **)&args.addr,
&args.addrlen) == 0) {
has_addr_opt = 1;
if (args.addrlen > SOCK_MAXADDRLEN) {
error = ENAMETOOLONG;
goto out;
}
nam = malloc(args.addrlen, M_SONAME,
M_WAITOK);
bcopy(args.addr, nam, args.addrlen);
nam->sa_len = args.addrlen;
}
if (vfs_getopt(mp->mnt_optnew, "fh", (void **)&args.fh,
&args.fhsize) == 0) {
has_fh_opt = 1;
}
if (vfs_getopt(mp->mnt_optnew, "hostname", (void **)&args.hostname,
NULL) == 0) {
has_hostname_opt = 1;
}
if (args.hostname == NULL) {
vfs_mount_error(mp, "Invalid hostname");
error = EINVAL;
goto out;
}
if (args.fhsize < 0 || args.fhsize > NFSX_V3FHMAX) {
vfs_mount_error(mp, "Bad file handle");
error = EINVAL;
goto out;
}
if (mp->mnt_flag & MNT_UPDATE) {
struct nfsmount *nmp = VFSTONFS(mp);
if (nmp == NULL) {
error = EIO;
goto out;
}
/*
* If a change from TCP->UDP is done and there are thread(s)
* that have I/O RPC(s) in progress with a tranfer size
* greater than NFS_MAXDGRAMDATA, those thread(s) will be
* hung, retrying the RPC(s) forever. Usually these threads
* will be seen doing an uninterruptible sleep on wait channel
* "newnfsreq" (truncated to "newnfsre" by procstat).
*/
if (args.sotype == SOCK_DGRAM && nmp->nm_sotype == SOCK_STREAM)
tprintf(curthread->td_proc, LOG_WARNING,
"Warning: mount -u that changes TCP->UDP can result in hung threads\n");
/*
* When doing an update, we can't change from or to
* v3, switch lockd strategies or change cookie translation
*/
args.flags = (args.flags &
~(NFSMNT_NFSV3 | NFSMNT_NOLOCKD /*|NFSMNT_XLATECOOKIE*/)) |
(nmp->nm_flag &
(NFSMNT_NFSV3 | NFSMNT_NOLOCKD /*|NFSMNT_XLATECOOKIE*/));
nfs_decode_args(mp, nmp, &args, NULL);
goto out;
}
/*
* Make the nfs_ip_paranoia sysctl serve as the default connection
* or no-connection mode for those protocols that support
* no-connection mode (the flag will be cleared later for protocols
* that do not support no-connection mode). This will allow a client
* to receive replies from a different IP then the request was
* sent to. Note: default value for nfs_ip_paranoia is 1 (paranoid),
* not 0.
*/
if (nfs_ip_paranoia == 0)
args.flags |= NFSMNT_NOCONN;
if (has_nfs_args_opt) {
/*
* In the 'nfs_args' case, the pointers in the args
* structure are in userland - we copy them in here.
*/
if (!has_fh_opt) {
error = copyin((caddr_t)args.fh, (caddr_t)nfh,
args.fhsize);
if (error) {
goto out;
}
args.fh = nfh;
}
if (!has_hostname_opt) {
error = copyinstr(args.hostname, hst, MNAMELEN-1, &len);
if (error) {
goto out;
}
bzero(&hst[len], MNAMELEN - len);
args.hostname = hst;
}
if (!has_addr_opt) {
/* sockargs() call must be after above copyin() calls */
error = getsockaddr(&nam, (caddr_t)args.addr,
args.addrlen);
if (error) {
goto out;
}
}
} else if (has_addr_opt == 0) {
vfs_mount_error(mp, "No server address");
error = EINVAL;
goto out;
}
error = mountnfs(&args, mp, nam, args.hostname, &vp,
curthread->td_ucred, nametimeo, negnametimeo);
out:
if (!error) {
MNT_ILOCK(mp);
mp->mnt_kern_flag |= MNTK_LOOKUP_SHARED;
MNT_IUNLOCK(mp);
}
return (error);
}
/*
* VFS Operations.
*
* mount system call
* It seems a bit dumb to copyinstr() the host and path here and then
* bcopy() them in mountnfs(), but I wanted to detect errors before
* doing the sockargs() call because sockargs() allocates an mbuf and
* an error after that means that I have to release the mbuf.
*/
/* ARGSUSED */
static int
nfs_cmount(struct mntarg *ma, void *data, uint64_t flags)
{
int error;
struct nfs_args args;
error = copyin(data, &args, sizeof (struct nfs_args));
if (error)
return error;
ma = mount_arg(ma, "nfs_args", &args, sizeof args);
error = kernel_mount(ma, flags);
return (error);
}
/*
* Mount the per-process file descriptors (/dev/fd)
*/
static int
portal_mount(struct mount *mp)
{
struct file *fp;
struct portalmount *fmp;
struct socket *so;
struct vnode *rvp;
struct thread *td;
struct portalnode *pn;
int error, v;
char *p;
td = curthread;
if (vfs_filteropt(mp->mnt_optnew, portal_opts))
return (EINVAL);
error = vfs_scanopt(mp->mnt_optnew, "socket", "%d", &v);
if (error != 1)
return (EINVAL);
error = vfs_getopt(mp->mnt_optnew, "config", (void **)&p, NULL);
if (error)
return (error);
/*
* Capsicum is not incompatible with portalfs, but we don't really
* know what rights are required. In the spirit of "better safe than
* sorry", pretend that all rights are required for now.
*/
if ((error = fget(td, v, CAP_MASK_VALID, &fp)) != 0)
return (error);
if (fp->f_type != DTYPE_SOCKET) {
fdrop(fp, td);
return(ENOTSOCK);
}
so = fp->f_data; /* XXX race against userland */
if (so->so_proto->pr_domain->dom_family != AF_UNIX) {
fdrop(fp, td);
return (ESOCKTNOSUPPORT);
}
pn = malloc(sizeof(struct portalnode),
M_TEMP, M_WAITOK);
fmp = malloc(sizeof(struct portalmount),
M_PORTALFSMNT, M_WAITOK); /* XXX */
error = getnewvnode("portal", mp, &portal_vnodeops, &rvp); /* XXX */
if (error) {
free(fmp, M_PORTALFSMNT);
free(pn, M_TEMP);
fdrop(fp, td);
return (error);
}
error = insmntque(rvp, mp); /* XXX: Too early for mpsafe fs */
if (error != 0) {
free(fmp, M_PORTALFSMNT);
free(pn, M_TEMP);
fdrop(fp, td);
return (error);
}
rvp->v_data = pn;
rvp->v_type = VDIR;
rvp->v_vflag |= VV_ROOT;
VTOPORTAL(rvp)->pt_arg = 0;
VTOPORTAL(rvp)->pt_size = 0;
VTOPORTAL(rvp)->pt_fileid = PORTAL_ROOTFILEID;
fmp->pm_root = rvp;
fhold(fp);
fmp->pm_server = fp;
MNT_ILOCK(mp);
mp->mnt_flag |= MNT_LOCAL;
MNT_IUNLOCK(mp);
mp->mnt_data = fmp;
vfs_getnewfsid(mp);
vfs_mountedfrom(mp, p);
fdrop(fp, td);
return (0);
}
static int
p9fs_mount(struct mount *mp)
{
struct p9fsmount *p9mp;
struct p9fs_session *p9s;
int error;
error = EINVAL;
if (vfs_filteropt(mp->mnt_optnew, p9_opts))
goto out;
if (mp->mnt_flag & MNT_UPDATE)
return (p9fs_mount_parse_opts(mp));
/* Allocate and initialize the private mount structure. */
p9mp = malloc(sizeof (struct p9fsmount), M_P9MNT, M_WAITOK | M_ZERO);
mp->mnt_data = p9mp;
p9mp->p9_mountp = mp;
p9fs_init_session(&p9mp->p9_session);
p9s = &p9mp->p9_session;
p9s->p9s_mount = mp;
error = p9fs_mount_parse_opts(mp);
if (error != 0)
goto out;
error = p9fs_connect(mp);
if (error != 0) {
goto out;
}
/* Negotiate with the remote service. XXX: Add auth call. */
error = p9fs_client_version(p9s);
if (error == 0) {
/* Initialize the root vnode just before attaching. */
struct vnode *vp, *ivp;
struct p9fs_node *np = &p9s->p9s_rootnp;
np->p9n_fid = ROOTFID;
np->p9n_session = p9s;
error = getnewvnode("p9fs", mp, &p9fs_vnops, &vp);
if (error == 0) {
vn_lock(vp, LK_EXCLUSIVE);
error = insmntque(vp, mp);
}
ivp = NULL;
if (error == 0)
error = vfs_hash_insert(vp, ROOTFID, LK_EXCLUSIVE,
curthread, &ivp, NULL, NULL);
if (error == 0 && ivp != NULL)
error = EBUSY;
if (error == 0) {
np->p9n_vnode = vp;
vp->v_data = np;
vp->v_type = VDIR;
vp->v_vflag |= VV_ROOT;
VOP_UNLOCK(vp, 0);
}
}
if (error == 0)
error = p9fs_client_attach(p9s);
if (error == 0)
p9s->p9s_state = P9S_RUNNING;
out:
if (error != 0)
(void) p9fs_unmount(mp, MNT_FORCE);
return (error);
}
