904 lines
20 KiB
C
904 lines
20 KiB
C
/*-
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* Copyright (c) 2000-2001 Boris Popov
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Boris Popov.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Connection engine.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/priv.h>
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#include <sys/proc.h>
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#include <sys/lock.h>
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#include <sys/sysctl.h>
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#include <sys/socketvar.h>
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#include <sys/iconv.h>
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#include <netsmb/smb.h>
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#include <netsmb/smb_subr.h>
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#include <netsmb/smb_conn.h>
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#include <netsmb/smb_tran.h>
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#include <netsmb/smb_trantcp.h>
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static struct smb_connobj smb_vclist;
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static int smb_vcnext = 1; /* next unique id for VC */
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SYSCTL_NODE(_net, OID_AUTO, smb, CTLFLAG_RW, NULL, "SMB protocol");
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MALLOC_DEFINE(M_SMBCONN, "smb_conn", "SMB connection");
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static void smb_co_init(struct smb_connobj *cp, int level, char *ilockname,
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char *lockname);
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static void smb_co_done(struct smb_connobj *cp);
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static int smb_co_lockstatus(struct smb_connobj *cp);
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static int smb_vc_disconnect(struct smb_vc *vcp);
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static void smb_vc_free(struct smb_connobj *cp);
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static void smb_vc_gone(struct smb_connobj *cp, struct smb_cred *scred);
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static smb_co_free_t smb_share_free;
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static smb_co_gone_t smb_share_gone;
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static int smb_sysctl_treedump(SYSCTL_HANDLER_ARGS);
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SYSCTL_PROC(_net_smb, OID_AUTO, treedump, CTLFLAG_RD | CTLTYPE_OPAQUE,
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NULL, 0, smb_sysctl_treedump, "S,treedump", "Requester tree");
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int
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smb_sm_init(void)
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{
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smb_co_init(&smb_vclist, SMBL_SM, "smbsm ilock", "smbsm");
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smb_co_unlock(&smb_vclist, 0);
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return 0;
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}
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int
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smb_sm_done(void)
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{
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/* XXX: hold the mutex */
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if (smb_vclist.co_usecount > 1) {
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SMBERROR("%d connections still active\n", smb_vclist.co_usecount - 1);
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return EBUSY;
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}
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lockmgr(&smb_vclist.co_lock, LK_DRAIN, NULL);
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smb_co_done(&smb_vclist);
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return 0;
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}
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static int
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smb_sm_lockvclist(int flags)
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{
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return smb_co_lock(&smb_vclist, flags | LK_CANRECURSE);
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}
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static void
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smb_sm_unlockvclist(void)
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{
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smb_co_unlock(&smb_vclist, LK_RELEASE);
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}
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static int
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smb_sm_lookupint(struct smb_vcspec *vcspec, struct smb_sharespec *shspec,
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struct smb_cred *scred, struct smb_vc **vcpp)
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{
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struct smb_connobj *scp;
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struct smb_vc *vcp;
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int exact = 1;
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int error;
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vcspec->shspec = shspec;
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error = ENOENT;
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vcp = NULL;
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SMBCO_FOREACH(scp, &smb_vclist) {
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vcp = (struct smb_vc *)scp;
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error = smb_vc_lock(vcp, LK_EXCLUSIVE);
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if (error)
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continue;
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if ((vcp->obj.co_flags & SMBV_PRIVATE) ||
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!CONNADDREQ(vcp->vc_paddr, vcspec->sap) ||
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strcmp(vcp->vc_username, vcspec->username) != 0)
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goto err1;
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if (vcspec->owner != SMBM_ANY_OWNER) {
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if (vcp->vc_uid != vcspec->owner)
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goto err1;
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} else
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exact = 0;
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if (vcspec->group != SMBM_ANY_GROUP) {
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if (vcp->vc_grp != vcspec->group)
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goto err1;
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} else
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exact = 0;
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if (vcspec->mode & SMBM_EXACT) {
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if (!exact || (vcspec->mode & SMBM_MASK) !=
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vcp->vc_mode)
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goto err1;
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}
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if (smb_vc_access(vcp, scred, vcspec->mode) != 0)
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goto err1;
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vcspec->ssp = NULL;
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if (shspec) {
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error = (int)smb_vc_lookupshare(vcp, shspec, scred,
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&vcspec->ssp);
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if (error)
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goto fail;
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}
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error = 0;
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break;
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err1:
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error = 1;
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fail:
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smb_vc_unlock(vcp, 0);
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}
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if (vcp) {
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smb_vc_ref(vcp);
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*vcpp = vcp;
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}
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return (error);
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}
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int
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smb_sm_lookup(struct smb_vcspec *vcspec, struct smb_sharespec *shspec,
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struct smb_cred *scred, struct smb_vc **vcpp)
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{
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struct smb_vc *vcp;
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struct smb_share *ssp = NULL;
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int error;
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*vcpp = vcp = NULL;
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error = smb_sm_lockvclist(LK_EXCLUSIVE);
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if (error)
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return error;
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error = smb_sm_lookupint(vcspec, shspec, scred, vcpp);
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if (error == 0 || (vcspec->flags & SMBV_CREATE) == 0) {
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smb_sm_unlockvclist();
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return error;
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}
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error = smb_sm_lookupint(vcspec, NULL, scred, &vcp);
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if (error) {
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error = smb_vc_create(vcspec, scred, &vcp);
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if (error)
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goto out;
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error = smb_vc_connect(vcp, scred);
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if (error)
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goto out;
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}
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if (shspec == NULL)
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goto out;
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error = smb_share_create(vcp, shspec, scred, &ssp);
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if (error)
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goto out;
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error = smb_smb_treeconnect(ssp, scred);
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if (error == 0)
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vcspec->ssp = ssp;
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else
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smb_share_put(ssp, scred);
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out:
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smb_sm_unlockvclist();
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if (error == 0)
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*vcpp = vcp;
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else if (vcp) {
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smb_vc_lock(vcp, LK_EXCLUSIVE);
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smb_vc_put(vcp, scred);
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}
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return error;
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}
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/*
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* Common code for connection object
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*/
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static void
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smb_co_init(struct smb_connobj *cp, int level, char *ilockname, char *lockname)
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{
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SLIST_INIT(&cp->co_children);
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smb_sl_init(&cp->co_interlock, ilockname);
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lockinit(&cp->co_lock, PZERO, lockname, 0, 0);
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cp->co_level = level;
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cp->co_usecount = 1;
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if (smb_co_lock(cp, LK_EXCLUSIVE) != 0)
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panic("smb_co_init: lock failed");
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}
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static void
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smb_co_done(struct smb_connobj *cp)
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{
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smb_sl_destroy(&cp->co_interlock);
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lockmgr(&cp->co_lock, LK_RELEASE, NULL);
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lockdestroy(&cp->co_lock);
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}
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static void
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smb_co_gone(struct smb_connobj *cp, struct smb_cred *scred)
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{
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struct smb_connobj *parent;
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if (cp->co_gone)
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cp->co_gone(cp, scred);
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parent = cp->co_parent;
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if (parent) {
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smb_co_lock(parent, LK_EXCLUSIVE);
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SLIST_REMOVE(&parent->co_children, cp, smb_connobj, co_next);
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smb_co_put(parent, scred);
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}
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if (cp->co_free)
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cp->co_free(cp);
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}
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void
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smb_co_ref(struct smb_connobj *cp)
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{
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SMB_CO_LOCK(cp);
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cp->co_usecount++;
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SMB_CO_UNLOCK(cp);
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}
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void
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smb_co_rele(struct smb_connobj *cp, struct smb_cred *scred)
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{
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SMB_CO_LOCK(cp);
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if (cp->co_usecount > 1) {
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cp->co_usecount--;
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SMB_CO_UNLOCK(cp);
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return;
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}
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if (cp->co_usecount == 0) {
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SMBERROR("negative use_count for object %d", cp->co_level);
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SMB_CO_UNLOCK(cp);
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return;
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}
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cp->co_usecount--;
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cp->co_flags |= SMBO_GONE;
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lockmgr(&cp->co_lock, LK_DRAIN | LK_INTERLOCK, &cp->co_interlock);
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smb_co_gone(cp, scred);
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}
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int
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smb_co_get(struct smb_connobj *cp, int flags, struct smb_cred *scred)
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{
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int error;
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if ((flags & LK_INTERLOCK) == 0)
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SMB_CO_LOCK(cp);
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cp->co_usecount++;
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error = smb_co_lock(cp, flags | LK_INTERLOCK);
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if (error) {
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SMB_CO_LOCK(cp);
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cp->co_usecount--;
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SMB_CO_UNLOCK(cp);
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return error;
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}
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return 0;
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}
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void
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smb_co_put(struct smb_connobj *cp, struct smb_cred *scred)
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{
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SMB_CO_LOCK(cp);
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if (cp->co_usecount > 1) {
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cp->co_usecount--;
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} else if (cp->co_usecount == 1) {
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cp->co_usecount--;
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cp->co_flags |= SMBO_GONE;
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} else {
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SMBERROR("negative usecount");
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}
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lockmgr(&cp->co_lock, LK_RELEASE | LK_INTERLOCK, &cp->co_interlock);
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if ((cp->co_flags & SMBO_GONE) == 0)
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return;
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lockmgr(&cp->co_lock, LK_DRAIN, NULL);
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smb_co_gone(cp, scred);
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}
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int
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smb_co_lockstatus(struct smb_connobj *cp)
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{
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return lockstatus(&cp->co_lock);
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}
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int
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smb_co_lock(struct smb_connobj *cp, int flags)
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{
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if (cp->co_flags & SMBO_GONE)
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return EINVAL;
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if ((flags & LK_TYPE_MASK) == 0)
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flags |= LK_EXCLUSIVE;
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if (smb_co_lockstatus(cp) == LK_EXCLUSIVE &&
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(flags & LK_CANRECURSE) == 0) {
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SMBERROR("recursive lock for object %d\n", cp->co_level);
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return 0;
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}
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return lockmgr(&cp->co_lock, flags, &cp->co_interlock);
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}
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void
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smb_co_unlock(struct smb_connobj *cp, int flags)
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{
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(void)lockmgr(&cp->co_lock, flags | LK_RELEASE, &cp->co_interlock);
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}
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static void
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smb_co_addchild(struct smb_connobj *parent, struct smb_connobj *child)
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{
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KASSERT(smb_co_lockstatus(parent) == LK_EXCLUSIVE,
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("smb_co_addchild: parent not locked"));
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KASSERT(smb_co_lockstatus(child) == LK_EXCLUSIVE,
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("smb_co_addchild: child not locked"));
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smb_co_ref(parent);
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SLIST_INSERT_HEAD(&parent->co_children, child, co_next);
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child->co_parent = parent;
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}
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/*
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* Session implementation
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*/
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int
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smb_vc_create(struct smb_vcspec *vcspec,
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struct smb_cred *scred, struct smb_vc **vcpp)
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{
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struct smb_vc *vcp;
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struct ucred *cred = scred->scr_cred;
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uid_t uid = vcspec->owner;
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gid_t gid = vcspec->group;
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uid_t realuid = cred->cr_uid;
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char *domain = vcspec->domain;
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int error, isroot;
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isroot = smb_suser(cred) == 0;
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/*
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* Only superuser can create VCs with different uid and gid
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*/
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if (uid != SMBM_ANY_OWNER && uid != realuid && !isroot)
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return EPERM;
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if (gid != SMBM_ANY_GROUP && !groupmember(gid, cred) && !isroot)
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return EPERM;
|
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|
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vcp = smb_zmalloc(sizeof(*vcp), M_SMBCONN, M_WAITOK);
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smb_co_init(VCTOCP(vcp), SMBL_VC, "smb_vc ilock", "smb_vc");
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vcp->obj.co_free = smb_vc_free;
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vcp->obj.co_gone = smb_vc_gone;
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vcp->vc_number = smb_vcnext++;
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vcp->vc_timo = SMB_DEFRQTIMO;
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vcp->vc_smbuid = SMB_UID_UNKNOWN;
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vcp->vc_mode = vcspec->rights & SMBM_MASK;
|
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vcp->obj.co_flags = vcspec->flags & (SMBV_PRIVATE | SMBV_SINGLESHARE);
|
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vcp->vc_tdesc = &smb_tran_nbtcp_desc;
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vcp->vc_seqno = 0;
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vcp->vc_mackey = NULL;
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vcp->vc_mackeylen = 0;
|
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|
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if (uid == SMBM_ANY_OWNER)
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uid = realuid;
|
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if (gid == SMBM_ANY_GROUP)
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gid = cred->cr_groups[0];
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vcp->vc_uid = uid;
|
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vcp->vc_grp = gid;
|
|
|
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smb_sl_init(&vcp->vc_stlock, "vcstlock");
|
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error = ENOMEM;
|
|
|
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vcp->vc_paddr = sodupsockaddr(vcspec->sap, M_WAITOK);
|
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if (vcp->vc_paddr == NULL)
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goto fail;
|
|
vcp->vc_laddr = sodupsockaddr(vcspec->lap, M_WAITOK);
|
|
if (vcp->vc_laddr == NULL)
|
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goto fail;
|
|
vcp->vc_pass = smb_strdup(vcspec->pass);
|
|
if (vcp->vc_pass == NULL)
|
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goto fail;
|
|
vcp->vc_domain = smb_strdup((domain && domain[0]) ? domain :
|
|
"NODOMAIN");
|
|
if (vcp->vc_domain == NULL)
|
|
goto fail;
|
|
vcp->vc_srvname = smb_strdup(vcspec->srvname);
|
|
if (vcp->vc_srvname == NULL)
|
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goto fail;
|
|
vcp->vc_username = smb_strdup(vcspec->username);
|
|
if (vcp->vc_username == NULL)
|
|
goto fail;
|
|
error = (int)iconv_open("tolower", vcspec->localcs, &vcp->vc_tolower);
|
|
if (error)
|
|
goto fail;
|
|
error = (int)iconv_open("toupper", vcspec->localcs, &vcp->vc_toupper);
|
|
if (error)
|
|
goto fail;
|
|
if (vcspec->servercs[0]) {
|
|
error = (int)iconv_open(vcspec->servercs, vcspec->localcs,
|
|
&vcp->vc_toserver);
|
|
if (error)
|
|
goto fail;
|
|
error = (int)iconv_open(vcspec->localcs, vcspec->servercs,
|
|
&vcp->vc_tolocal);
|
|
if (error)
|
|
goto fail;
|
|
}
|
|
error = (int)smb_iod_create(vcp);
|
|
if (error)
|
|
goto fail;
|
|
*vcpp = vcp;
|
|
smb_co_addchild(&smb_vclist, VCTOCP(vcp));
|
|
return (0);
|
|
|
|
fail:
|
|
smb_vc_put(vcp, scred);
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
smb_vc_free(struct smb_connobj *cp)
|
|
{
|
|
struct smb_vc *vcp = CPTOVC(cp);
|
|
|
|
if (vcp->vc_iod)
|
|
smb_iod_destroy(vcp->vc_iod);
|
|
SMB_STRFREE(vcp->vc_username);
|
|
SMB_STRFREE(vcp->vc_srvname);
|
|
SMB_STRFREE(vcp->vc_pass);
|
|
SMB_STRFREE(vcp->vc_domain);
|
|
if (vcp->vc_mackey)
|
|
free(vcp->vc_mackey, M_SMBTEMP);
|
|
if (vcp->vc_paddr)
|
|
free(vcp->vc_paddr, M_SONAME);
|
|
if (vcp->vc_laddr)
|
|
free(vcp->vc_laddr, M_SONAME);
|
|
if (vcp->vc_tolower)
|
|
iconv_close(vcp->vc_tolower);
|
|
if (vcp->vc_toupper)
|
|
iconv_close(vcp->vc_toupper);
|
|
if (vcp->vc_tolocal)
|
|
iconv_close(vcp->vc_tolocal);
|
|
if (vcp->vc_toserver)
|
|
iconv_close(vcp->vc_toserver);
|
|
smb_co_done(VCTOCP(vcp));
|
|
smb_sl_destroy(&vcp->vc_stlock);
|
|
free(vcp, M_SMBCONN);
|
|
}
|
|
|
|
/*
|
|
* Called when use count of VC dropped to zero.
|
|
* VC should be locked on enter with LK_DRAIN.
|
|
*/
|
|
static void
|
|
smb_vc_gone(struct smb_connobj *cp, struct smb_cred *scred)
|
|
{
|
|
struct smb_vc *vcp = CPTOVC(cp);
|
|
|
|
smb_vc_disconnect(vcp);
|
|
}
|
|
|
|
void
|
|
smb_vc_ref(struct smb_vc *vcp)
|
|
{
|
|
smb_co_ref(VCTOCP(vcp));
|
|
}
|
|
|
|
void
|
|
smb_vc_rele(struct smb_vc *vcp, struct smb_cred *scred)
|
|
{
|
|
smb_co_rele(VCTOCP(vcp), scred);
|
|
}
|
|
|
|
int
|
|
smb_vc_get(struct smb_vc *vcp, int flags, struct smb_cred *scred)
|
|
{
|
|
return smb_co_get(VCTOCP(vcp), flags, scred);
|
|
}
|
|
|
|
void
|
|
smb_vc_put(struct smb_vc *vcp, struct smb_cred *scred)
|
|
{
|
|
smb_co_put(VCTOCP(vcp), scred);
|
|
}
|
|
|
|
int
|
|
smb_vc_lock(struct smb_vc *vcp, int flags)
|
|
{
|
|
return smb_co_lock(VCTOCP(vcp), flags);
|
|
}
|
|
|
|
void
|
|
smb_vc_unlock(struct smb_vc *vcp, int flags)
|
|
{
|
|
smb_co_unlock(VCTOCP(vcp), flags);
|
|
}
|
|
|
|
int
|
|
smb_vc_access(struct smb_vc *vcp, struct smb_cred *scred, mode_t mode)
|
|
{
|
|
struct ucred *cred = scred->scr_cred;
|
|
|
|
if (smb_suser(cred) == 0 || cred->cr_uid == vcp->vc_uid)
|
|
return 0;
|
|
mode >>= 3;
|
|
if (!groupmember(vcp->vc_grp, cred))
|
|
mode >>= 3;
|
|
return (vcp->vc_mode & mode) == mode ? 0 : EACCES;
|
|
}
|
|
|
|
static int
|
|
smb_vc_cmpshare(struct smb_share *ssp, struct smb_sharespec *dp)
|
|
{
|
|
int exact = 1;
|
|
|
|
if (strcmp(ssp->ss_name, dp->name) != 0)
|
|
return 1;
|
|
if (dp->owner != SMBM_ANY_OWNER) {
|
|
if (ssp->ss_uid != dp->owner)
|
|
return 1;
|
|
} else
|
|
exact = 0;
|
|
if (dp->group != SMBM_ANY_GROUP) {
|
|
if (ssp->ss_grp != dp->group)
|
|
return 1;
|
|
} else
|
|
exact = 0;
|
|
|
|
if (dp->mode & SMBM_EXACT) {
|
|
if (!exact)
|
|
return 1;
|
|
return (dp->mode & SMBM_MASK) == ssp->ss_mode ? 0 : 1;
|
|
}
|
|
if (smb_share_access(ssp, dp->scred, dp->mode) != 0)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Lookup share in the given VC. Share referenced and locked on return.
|
|
* VC expected to be locked on entry and will be left locked on exit.
|
|
*/
|
|
int
|
|
smb_vc_lookupshare(struct smb_vc *vcp, struct smb_sharespec *dp,
|
|
struct smb_cred *scred, struct smb_share **sspp)
|
|
{
|
|
struct smb_connobj *scp = NULL;
|
|
struct smb_share *ssp = NULL;
|
|
int error;
|
|
|
|
*sspp = NULL;
|
|
dp->scred = scred;
|
|
SMBCO_FOREACH(scp, VCTOCP(vcp)) {
|
|
ssp = (struct smb_share *)scp;
|
|
error = smb_share_lock(ssp, LK_EXCLUSIVE);
|
|
if (error)
|
|
continue;
|
|
if (smb_vc_cmpshare(ssp, dp) == 0)
|
|
break;
|
|
smb_share_unlock(ssp, 0);
|
|
}
|
|
if (ssp) {
|
|
smb_share_ref(ssp);
|
|
*sspp = ssp;
|
|
error = 0;
|
|
} else
|
|
error = ENOENT;
|
|
return error;
|
|
}
|
|
|
|
int
|
|
smb_vc_connect(struct smb_vc *vcp, struct smb_cred *scred)
|
|
{
|
|
|
|
return smb_iod_request(vcp->vc_iod, SMBIOD_EV_CONNECT | SMBIOD_EV_SYNC, NULL);
|
|
}
|
|
|
|
/*
|
|
* Destroy VC to server, invalidate shares linked with it.
|
|
* Transport should be locked on entry.
|
|
*/
|
|
int
|
|
smb_vc_disconnect(struct smb_vc *vcp)
|
|
{
|
|
|
|
smb_iod_request(vcp->vc_iod, SMBIOD_EV_DISCONNECT | SMBIOD_EV_SYNC, NULL);
|
|
return 0;
|
|
}
|
|
|
|
static char smb_emptypass[] = "";
|
|
|
|
const char *
|
|
smb_vc_getpass(struct smb_vc *vcp)
|
|
{
|
|
if (vcp->vc_pass)
|
|
return vcp->vc_pass;
|
|
return smb_emptypass;
|
|
}
|
|
|
|
static int
|
|
smb_vc_getinfo(struct smb_vc *vcp, struct smb_vc_info *vip)
|
|
{
|
|
bzero(vip, sizeof(struct smb_vc_info));
|
|
vip->itype = SMB_INFO_VC;
|
|
vip->usecount = vcp->obj.co_usecount;
|
|
vip->uid = vcp->vc_uid;
|
|
vip->gid = vcp->vc_grp;
|
|
vip->mode = vcp->vc_mode;
|
|
vip->flags = vcp->obj.co_flags;
|
|
vip->sopt = vcp->vc_sopt;
|
|
vip->iodstate = vcp->vc_iod->iod_state;
|
|
bzero(&vip->sopt.sv_skey, sizeof(vip->sopt.sv_skey));
|
|
snprintf(vip->srvname, sizeof(vip->srvname), "%s", vcp->vc_srvname);
|
|
snprintf(vip->vcname, sizeof(vip->vcname), "%s", vcp->vc_username);
|
|
return 0;
|
|
}
|
|
|
|
u_short
|
|
smb_vc_nextmid(struct smb_vc *vcp)
|
|
{
|
|
u_short r;
|
|
|
|
SMB_CO_LOCK(&vcp->obj);
|
|
r = vcp->vc_mid++;
|
|
SMB_CO_UNLOCK(&vcp->obj);
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* Share implementation
|
|
*/
|
|
/*
|
|
* Allocate share structure and attach it to the given VC
|
|
* Connection expected to be locked on entry. Share will be returned
|
|
* in locked state.
|
|
*/
|
|
int
|
|
smb_share_create(struct smb_vc *vcp, struct smb_sharespec *shspec,
|
|
struct smb_cred *scred, struct smb_share **sspp)
|
|
{
|
|
struct smb_share *ssp;
|
|
struct ucred *cred = scred->scr_cred;
|
|
uid_t realuid = cred->cr_uid;
|
|
uid_t uid = shspec->owner;
|
|
gid_t gid = shspec->group;
|
|
int error, isroot;
|
|
|
|
isroot = smb_suser(cred) == 0;
|
|
/*
|
|
* Only superuser can create shares with different uid and gid
|
|
*/
|
|
if (uid != SMBM_ANY_OWNER && uid != realuid && !isroot)
|
|
return EPERM;
|
|
if (gid != SMBM_ANY_GROUP && !groupmember(gid, cred) && !isroot)
|
|
return EPERM;
|
|
error = smb_vc_lookupshare(vcp, shspec, scred, &ssp);
|
|
if (!error) {
|
|
smb_share_put(ssp, scred);
|
|
return EEXIST;
|
|
}
|
|
if (uid == SMBM_ANY_OWNER)
|
|
uid = realuid;
|
|
if (gid == SMBM_ANY_GROUP)
|
|
gid = cred->cr_groups[0];
|
|
ssp = smb_zmalloc(sizeof(*ssp), M_SMBCONN, M_WAITOK);
|
|
smb_co_init(SSTOCP(ssp), SMBL_SHARE, "smbss ilock", "smbss");
|
|
ssp->obj.co_free = smb_share_free;
|
|
ssp->obj.co_gone = smb_share_gone;
|
|
smb_sl_init(&ssp->ss_stlock, "ssstlock");
|
|
ssp->ss_name = smb_strdup(shspec->name);
|
|
if (shspec->pass && shspec->pass[0])
|
|
ssp->ss_pass = smb_strdup(shspec->pass);
|
|
ssp->ss_type = shspec->stype;
|
|
ssp->ss_tid = SMB_TID_UNKNOWN;
|
|
ssp->ss_uid = uid;
|
|
ssp->ss_grp = gid;
|
|
ssp->ss_mode = shspec->rights & SMBM_MASK;
|
|
smb_co_addchild(VCTOCP(vcp), SSTOCP(ssp));
|
|
*sspp = ssp;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
smb_share_free(struct smb_connobj *cp)
|
|
{
|
|
struct smb_share *ssp = CPTOSS(cp);
|
|
|
|
SMB_STRFREE(ssp->ss_name);
|
|
SMB_STRFREE(ssp->ss_pass);
|
|
smb_sl_destroy(&ssp->ss_stlock);
|
|
smb_co_done(SSTOCP(ssp));
|
|
free(ssp, M_SMBCONN);
|
|
}
|
|
|
|
static void
|
|
smb_share_gone(struct smb_connobj *cp, struct smb_cred *scred)
|
|
{
|
|
struct smb_share *ssp = CPTOSS(cp);
|
|
|
|
smb_smb_treedisconnect(ssp, scred);
|
|
}
|
|
|
|
void
|
|
smb_share_ref(struct smb_share *ssp)
|
|
{
|
|
smb_co_ref(SSTOCP(ssp));
|
|
}
|
|
|
|
void
|
|
smb_share_rele(struct smb_share *ssp, struct smb_cred *scred)
|
|
{
|
|
smb_co_rele(SSTOCP(ssp), scred);
|
|
}
|
|
|
|
int
|
|
smb_share_get(struct smb_share *ssp, int flags, struct smb_cred *scred)
|
|
{
|
|
return smb_co_get(SSTOCP(ssp), flags, scred);
|
|
}
|
|
|
|
void
|
|
smb_share_put(struct smb_share *ssp, struct smb_cred *scred)
|
|
{
|
|
smb_co_put(SSTOCP(ssp), scred);
|
|
}
|
|
|
|
int
|
|
smb_share_lock(struct smb_share *ssp, int flags)
|
|
{
|
|
return smb_co_lock(SSTOCP(ssp), flags);
|
|
}
|
|
|
|
void
|
|
smb_share_unlock(struct smb_share *ssp, int flags)
|
|
{
|
|
smb_co_unlock(SSTOCP(ssp), flags);
|
|
}
|
|
|
|
int
|
|
smb_share_access(struct smb_share *ssp, struct smb_cred *scred, mode_t mode)
|
|
{
|
|
struct ucred *cred = scred->scr_cred;
|
|
|
|
if (smb_suser(cred) == 0 || cred->cr_uid == ssp->ss_uid)
|
|
return 0;
|
|
mode >>= 3;
|
|
if (!groupmember(ssp->ss_grp, cred))
|
|
mode >>= 3;
|
|
return (ssp->ss_mode & mode) == mode ? 0 : EACCES;
|
|
}
|
|
|
|
void
|
|
smb_share_invalidate(struct smb_share *ssp)
|
|
{
|
|
ssp->ss_tid = SMB_TID_UNKNOWN;
|
|
}
|
|
|
|
int
|
|
smb_share_valid(struct smb_share *ssp)
|
|
{
|
|
return ssp->ss_tid != SMB_TID_UNKNOWN &&
|
|
ssp->ss_vcgenid == SSTOVC(ssp)->vc_genid;
|
|
}
|
|
|
|
const char*
|
|
smb_share_getpass(struct smb_share *ssp)
|
|
{
|
|
struct smb_vc *vcp;
|
|
|
|
if (ssp->ss_pass)
|
|
return ssp->ss_pass;
|
|
vcp = SSTOVC(ssp);
|
|
if (vcp->vc_pass)
|
|
return vcp->vc_pass;
|
|
return smb_emptypass;
|
|
}
|
|
|
|
static int
|
|
smb_share_getinfo(struct smb_share *ssp, struct smb_share_info *sip)
|
|
{
|
|
bzero(sip, sizeof(struct smb_share_info));
|
|
sip->itype = SMB_INFO_SHARE;
|
|
sip->usecount = ssp->obj.co_usecount;
|
|
sip->tid = ssp->ss_tid;
|
|
sip->type= ssp->ss_type;
|
|
sip->uid = ssp->ss_uid;
|
|
sip->gid = ssp->ss_grp;
|
|
sip->mode= ssp->ss_mode;
|
|
sip->flags = ssp->obj.co_flags;
|
|
snprintf(sip->sname, sizeof(sip->sname), "%s", ssp->ss_name);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Dump an entire tree into sysctl call
|
|
*/
|
|
static int
|
|
smb_sysctl_treedump(SYSCTL_HANDLER_ARGS)
|
|
{
|
|
struct thread *td = req->td;
|
|
struct smb_cred scred;
|
|
struct smb_connobj *scp1, *scp2;
|
|
struct smb_vc *vcp;
|
|
struct smb_share *ssp;
|
|
struct smb_vc_info vci;
|
|
struct smb_share_info ssi;
|
|
int error, itype;
|
|
|
|
smb_makescred(&scred, td, td->td_ucred);
|
|
error = sysctl_wire_old_buffer(req, 0);
|
|
if (error)
|
|
return (error);
|
|
error = smb_sm_lockvclist(LK_SHARED);
|
|
if (error)
|
|
return error;
|
|
SMBCO_FOREACH(scp1, &smb_vclist) {
|
|
vcp = (struct smb_vc *)scp1;
|
|
error = smb_vc_lock(vcp, LK_SHARED);
|
|
if (error)
|
|
continue;
|
|
smb_vc_getinfo(vcp, &vci);
|
|
error = SYSCTL_OUT(req, &vci, sizeof(struct smb_vc_info));
|
|
if (error) {
|
|
smb_vc_unlock(vcp, 0);
|
|
break;
|
|
}
|
|
SMBCO_FOREACH(scp2, VCTOCP(vcp)) {
|
|
ssp = (struct smb_share *)scp2;
|
|
error = smb_share_lock(ssp, LK_SHARED);
|
|
if (error) {
|
|
error = 0;
|
|
continue;
|
|
}
|
|
smb_share_getinfo(ssp, &ssi);
|
|
smb_share_unlock(ssp, 0);
|
|
error = SYSCTL_OUT(req, &ssi, sizeof(struct smb_share_info));
|
|
if (error)
|
|
break;
|
|
}
|
|
smb_vc_unlock(vcp, 0);
|
|
if (error)
|
|
break;
|
|
}
|
|
if (!error) {
|
|
itype = SMB_INFO_NONE;
|
|
error = SYSCTL_OUT(req, &itype, sizeof(itype));
|
|
}
|
|
smb_sm_unlockvclist();
|
|
return error;
|
|
}
|