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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/xl/@/fs/nwfs/nwfs_vfsops.c |
/*-
* Copyright (c) 1999, 2000 Boris Popov
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD: release/9.1.0/sys/fs/nwfs/nwfs_vfsops.c 230725 2012-01-29 08:03:45Z mckusick $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/vnode.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/malloc.h>
#include <sys/bio.h>
#include <sys/buf.h>
#include <netncp/ncp.h>
#include <netncp/ncp_conn.h>
#include <netncp/ncp_subr.h>
#include <netncp/ncp_ncp.h>
#include <netncp/ncp_nls.h>
#include <fs/nwfs/nwfs.h>
#include <fs/nwfs/nwfs_node.h>
#include <fs/nwfs/nwfs_subr.h>
int nwfs_debuglevel = 0;
static int nwfs_version = NWFS_VERSION;
SYSCTL_DECL(_vfs_nwfs);
SYSCTL_NODE(_vfs, OID_AUTO, nwfs, CTLFLAG_RW, 0, "Netware filesystem");
SYSCTL_INT(_vfs_nwfs, OID_AUTO, version, CTLFLAG_RD, &nwfs_version, 0, "");
SYSCTL_INT(_vfs_nwfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nwfs_debuglevel, 0, "");
MODULE_DEPEND(nwfs, ncp, 1, 1, 1);
MODULE_DEPEND(nwfs, libmchain, 1, 1, 1);
static vfs_cmount_t nwfs_cmount;
static vfs_mount_t nwfs_mount;
static vfs_quotactl_t nwfs_quotactl;
static vfs_root_t nwfs_root;
static vfs_statfs_t nwfs_statfs;
static vfs_unmount_t nwfs_unmount;
static vfs_init_t nwfs_init;
static vfs_uninit_t nwfs_uninit;
static struct vfsops nwfs_vfsops = {
.vfs_init = nwfs_init,
.vfs_mount = nwfs_mount,
.vfs_cmount = nwfs_cmount,
.vfs_quotactl = nwfs_quotactl,
.vfs_root = nwfs_root,
.vfs_statfs = nwfs_statfs,
.vfs_sync = vfs_stdsync,
.vfs_uninit = nwfs_uninit,
.vfs_unmount = nwfs_unmount,
};
VFS_SET(nwfs_vfsops, nwfs, VFCF_NETWORK);
int nwfs_pbuf_freecnt = -1; /* start out unlimited */
static int nwfsid = 1;
static int
nwfs_initnls(struct nwmount *nmp) {
char *pc, *pe;
int error = 0;
#define COPY_TABLE(t,d) { \
if (t) { \
error = copyin((t), pc, 256); \
if (error) break; \
} else \
bcopy(d, pc, 256); \
(t) = pc; pc += 256; \
}
nmp->m.nls.opt |= NWHP_NLS | NWHP_DOS;
if ((nmp->m.flags & NWFS_MOUNT_HAVE_NLS) == 0) {
nmp->m.nls.to_lower = ncp_defnls.to_lower;
nmp->m.nls.to_upper = ncp_defnls.to_upper;
nmp->m.nls.n2u = ncp_defnls.n2u;
nmp->m.nls.u2n = ncp_defnls.u2n;
return 0;
}
pe = malloc(256 * 4, M_NWFSDATA, M_WAITOK);
pc = pe;
do {
COPY_TABLE(nmp->m.nls.to_lower, ncp_defnls.to_lower);
COPY_TABLE(nmp->m.nls.to_upper, ncp_defnls.to_upper);
COPY_TABLE(nmp->m.nls.n2u, ncp_defnls.n2u);
COPY_TABLE(nmp->m.nls.u2n, ncp_defnls.u2n);
} while(0);
if (error) {
free(pe, M_NWFSDATA);
return error;
}
return 0;
}
static int nwfs_cmount(struct mntarg *ma, void *data, uint64_t flags)
{
struct nwfs_args args; /* will hold data from mount request */
int error;
error = copyin(data, &args, sizeof(struct nwfs_args));
if (error)
return (error);
/*
* XXX: cheap cop-out here, args contains a structure I don't
* XXX: know how we should handle, and I don't see any immediate
* XXX: prospect of avoiding a mount_nwfs(8) binary anyway.
*/
ma = mount_arg(ma, "nwfs_args", &args, sizeof args);
error = kernel_mount(ma, flags);
return (error);
}
/*
* mp - path - addr in user space of mount point (ie /usr or whatever)
* data - addr in user space of mount params
*/
static int nwfs_mount(struct mount *mp)
{
struct nwfs_args args; /* will hold data from mount request */
int error;
struct nwmount *nmp = NULL;
struct ncp_conn *conn = NULL;
struct ncp_handle *handle = NULL;
struct vnode *vp;
struct thread *td;
char *pc,*pe;
td = curthread;
if (mp->mnt_flag & MNT_ROOTFS)
return (EOPNOTSUPP);
if (mp->mnt_flag & MNT_UPDATE) {
nwfs_printf("MNT_UPDATE not implemented");
return (EOPNOTSUPP);
}
error = vfs_copyopt(mp->mnt_optnew, "nwfs_args", &args, sizeof args);
if (error)
return (error);
if (args.version != NWFS_VERSION) {
nwfs_printf("mount version mismatch: kernel=%d, mount=%d\n",NWFS_VERSION,args.version);
return (1);
}
error = ncp_conn_getbyref(args.connRef, td , td->td_ucred,NCPM_EXECUTE,&conn);
if (error) {
nwfs_printf("invalid connection refernce %d\n",args.connRef);
return (error);
}
error = ncp_conn_gethandle(conn, NULL, &handle);
if (error) {
nwfs_printf("can't get connection handle\n");
return (error);
}
ncp_conn_unlock(conn, td); /* we keep the ref */
mp->mnt_stat.f_iosize = conn->buffer_size;
/* We must malloc our own mount info */
nmp = malloc(sizeof(struct nwmount), M_NWFSDATA, M_WAITOK | M_ZERO);
if (nmp == NULL) {
nwfs_printf("could not alloc nwmount\n");
error = ENOMEM;
goto bad;
}
mp->mnt_data = nmp;
nmp->connh = handle;
nmp->n_root = NULL;
nmp->n_id = nwfsid++;
nmp->m = args;
nmp->m.file_mode = (nmp->m.file_mode &
(S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG;
nmp->m.dir_mode = (nmp->m.dir_mode &
(S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR;
if ((error = nwfs_initnls(nmp)) != 0) goto bad;
pc = mp->mnt_stat.f_mntfromname;
pe = pc+sizeof(mp->mnt_stat.f_mntfromname);
bzero(pc, MNAMELEN);
*(pc++) = '/';
pc = index(strncpy(pc, conn->li.server, pe-pc-2),0);
if (pc < pe-1) {
*(pc++) = ':';
pc=index(strncpy(pc, conn->li.user, pe-pc-2),0);
if (pc < pe-1) {
*(pc++) = '/';
strncpy(pc, nmp->m.mounted_vol, pe-pc-2);
}
}
/* protect against invalid mount points */
nmp->m.mount_point[sizeof(nmp->m.mount_point)-1] = '\0';
vfs_getnewfsid(mp);
error = nwfs_root(mp, LK_EXCLUSIVE, &vp);
if (error)
goto bad;
/*
* Lose the lock but keep the ref.
*/
VOP_UNLOCK(vp, 0);
NCPVODEBUG("rootvp.vrefcnt=%d\n",vrefcnt(vp));
return error;
bad:
if (nmp)
free(nmp, M_NWFSDATA);
if (handle)
ncp_conn_puthandle(handle, NULL, 0);
return error;
}
/* Unmount the filesystem described by mp. */
static int
nwfs_unmount(struct mount *mp, int mntflags)
{
struct thread *td;
struct nwmount *nmp = VFSTONWFS(mp);
struct ncp_conn *conn;
int error, flags;
NCPVODEBUG("nwfs_unmount: flags=%04x\n",mntflags);
td = curthread;
flags = 0;
if (mntflags & MNT_FORCE)
flags |= FORCECLOSE;
/* There is 1 extra root vnode reference from nwfs_mount(). */
error = vflush(mp, 1, flags, td);
if (error)
return (error);
conn = NWFSTOCONN(nmp);
ncp_conn_puthandle(nmp->connh,NULL,0);
if (ncp_conn_lock(conn, td, td->td_ucred,NCPM_WRITE | NCPM_EXECUTE) == 0) {
if(ncp_conn_free(conn))
ncp_conn_unlock(conn, td);
}
mp->mnt_data = NULL;
if (nmp->m.flags & NWFS_MOUNT_HAVE_NLS)
free(nmp->m.nls.to_lower, M_NWFSDATA);
free(nmp, M_NWFSDATA);
MNT_ILOCK(mp);
mp->mnt_flag &= ~MNT_LOCAL;
MNT_IUNLOCK(mp);
return (error);
}
/* Return locked vnode to root of a filesystem */
static int
nwfs_root(struct mount *mp, int flags, struct vnode **vpp) {
struct vnode *vp;
struct nwmount *nmp;
struct nwnode *np;
struct ncp_conn *conn;
struct nw_entry_info fattr;
struct thread *td;
struct ucred *cred;
int error, nsf, opt;
u_char vol;
td = curthread;
cred = td->td_ucred;
nmp = VFSTONWFS(mp);
conn = NWFSTOCONN(nmp);
if (nmp->n_root) {
*vpp = NWTOV(nmp->n_root);
while (vget(*vpp, LK_EXCLUSIVE, curthread) != 0)
;
return 0;
}
error = ncp_lookup_volume(conn, nmp->m.mounted_vol, &vol,
&nmp->n_rootent.f_id, td, cred);
if (error)
return ENOENT;
nmp->n_volume = vol;
error = ncp_get_namespaces(conn, vol, &nsf, td, cred);
if (error)
return ENOENT;
if (nsf & NW_NSB_OS2) {
NCPVODEBUG("volume %s has os2 namespace\n",nmp->m.mounted_vol);
if ((nmp->m.flags & NWFS_MOUNT_NO_OS2) == 0) {
nmp->name_space = NW_NS_OS2;
nmp->m.nls.opt &= ~NWHP_DOS;
}
}
opt = nmp->m.nls.opt;
nsf = opt & (NWHP_UPPER | NWHP_LOWER);
if (opt & NWHP_DOS) {
if (nsf == (NWHP_UPPER | NWHP_LOWER)) {
nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER);
} else if (nsf == 0) {
nmp->m.nls.opt |= NWHP_LOWER;
}
} else {
if (nsf == (NWHP_UPPER | NWHP_LOWER)) {
nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER);
}
}
if (nmp->m.root_path[0]) {
nmp->m.root_path[0]--;
error = ncp_obtain_info(nmp, nmp->n_rootent.f_id,
-nmp->m.root_path[0], nmp->m.root_path, &fattr, td, cred);
if (error) {
NCPFATAL("Invalid root path specified\n");
return ENOENT;
}
nmp->n_rootent.f_parent = fattr.dirEntNum;
nmp->m.root_path[0]++;
error = ncp_obtain_info(nmp, nmp->n_rootent.f_id,
-nmp->m.root_path[0], nmp->m.root_path, &fattr, td, cred);
if (error) {
NCPFATAL("Invalid root path specified\n");
return ENOENT;
}
nmp->n_rootent.f_id = fattr.dirEntNum;
} else {
error = ncp_obtain_info(nmp, nmp->n_rootent.f_id,
0, NULL, &fattr, td, cred);
if (error) {
NCPFATAL("Can't obtain volume info\n");
return ENOENT;
}
fattr.nameLen = strlen(strcpy(fattr.entryName, "#.ROOT"));
nmp->n_rootent.f_parent = nmp->n_rootent.f_id;
}
error = nwfs_nget(mp, nmp->n_rootent, &fattr, NULL, &vp);
if (error)
return (error);
vp->v_vflag |= VV_ROOT;
np = VTONW(vp);
if (nmp->m.root_path[0] == 0)
np->n_flag |= NVOLUME;
nmp->n_root = np;
/* error = VOP_GETATTR(vp, &vattr, cred, td);
if (error) {
vput(vp);
NCPFATAL("Can't get root directory entry\n");
return error;
}*/
*vpp = vp;
return (0);
}
/*
* Do operations associated with quotas, not supported
*/
/* ARGSUSED */
static int
nwfs_quotactl(mp, cmd, uid, arg)
struct mount *mp;
int cmd;
uid_t uid;
void *arg;
{
NCPVODEBUG("return EOPNOTSUPP\n");
return (EOPNOTSUPP);
}
/*ARGSUSED*/
int
nwfs_init(struct vfsconf *vfsp)
{
nwfs_hash_init();
nwfs_pbuf_freecnt = nswbuf / 2 + 1;
NCPVODEBUG("always happy to load!\n");
return (0);
}
/*ARGSUSED*/
int
nwfs_uninit(struct vfsconf *vfsp)
{
nwfs_hash_free();
NCPVODEBUG("unloaded\n");
return (0);
}
/*
* nwfs_statfs call
*/
int
nwfs_statfs(mp, sbp)
struct mount *mp;
struct statfs *sbp;
{
struct nwmount *nmp = VFSTONWFS(mp);
struct thread *td = curthread;
int error = 0, secsize;
struct nwnode *np = nmp->n_root;
struct ncp_volume_info vi;
if (np == NULL) return EINVAL;
error = ncp_get_volume_info_with_number(NWFSTOCONN(nmp),
nmp->n_volume, &vi, td, td->td_ucred);
if (error) return error;
secsize = 512; /* XXX how to get real value ??? */
/* fundamental filesystem block size */
sbp->f_bsize = vi.sectors_per_block*secsize;
/* optimal transfer block size */
sbp->f_iosize = NWFSTOCONN(nmp)->buffer_size;
/* total data blocks in filesystem */
sbp->f_blocks= vi.total_blocks;
/* free blocks in fs */
sbp->f_bfree = vi.free_blocks + vi.purgeable_blocks;
/* free blocks avail to non-superuser */
sbp->f_bavail= vi.free_blocks+vi.purgeable_blocks;
/* total file nodes in filesystem */
sbp->f_files = vi.total_dir_entries;
/* free file nodes in fs */
sbp->f_ffree = vi.available_dir_entries;
sbp->f_flags = 0; /* copy of mount exported flags */
return 0;
}