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afe097512c
VM pressure. The reason is that in some codepaths pointers to stack variables were passed from one thread to another. In collaboration with: pho Reported by: pho's stress2 suite Sponsored by: iXsystems inc.
364 lines
8.8 KiB
C
364 lines
8.8 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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*
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/proc.h>
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#include <sys/fcntl.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/sysctl.h>
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#include <sys/mbuf.h>
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#include <sys/iconv.h>
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#include <netsmb/smb.h>
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#include <netsmb/smb_conn.h>
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#include <netsmb/smb_rq.h>
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#include <netsmb/smb_subr.h>
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#include <netsmb/smb_dev.h>
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/*
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* helpers for nsmb device. Can be moved to the smb_dev.c file.
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*/
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static void smb_usr_vcspec_free(struct smb_vcspec *spec);
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static int
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smb_usr_vc2spec(struct smbioc_ossn *dp, struct smb_vcspec *spec)
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{
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int flags = 0;
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bzero(spec, sizeof(*spec));
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#ifdef NETSMB_NO_ANON_USER
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if (dp->ioc_user[0] == 0)
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return EINVAL;
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#endif
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if (dp->ioc_server == NULL)
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return EINVAL;
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if (dp->ioc_localcs[0] == 0) {
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SMBERROR("no local charset ?\n");
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return EINVAL;
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}
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spec->sap = smb_memdupin(dp->ioc_server, dp->ioc_svlen);
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if (spec->sap == NULL)
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return ENOMEM;
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if (dp->ioc_local) {
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spec->lap = smb_memdupin(dp->ioc_local, dp->ioc_lolen);
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if (spec->lap == NULL) {
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smb_usr_vcspec_free(spec);
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return ENOMEM;
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}
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}
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spec->srvname = dp->ioc_srvname;
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spec->pass = dp->ioc_password;
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spec->domain = dp->ioc_workgroup;
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spec->username = dp->ioc_user;
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spec->mode = dp->ioc_mode;
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spec->rights = dp->ioc_rights;
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spec->owner = dp->ioc_owner;
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spec->group = dp->ioc_group;
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spec->localcs = dp->ioc_localcs;
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spec->servercs = dp->ioc_servercs;
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if (dp->ioc_opt & SMBVOPT_PRIVATE)
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flags |= SMBV_PRIVATE;
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if (dp->ioc_opt & SMBVOPT_SINGLESHARE)
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flags |= SMBV_PRIVATE | SMBV_SINGLESHARE;
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spec->flags = flags;
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return 0;
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}
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static void
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smb_usr_vcspec_free(struct smb_vcspec *spec)
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{
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if (spec->sap)
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smb_memfree(spec->sap);
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if (spec->lap)
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smb_memfree(spec->lap);
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}
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static int
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smb_usr_share2spec(struct smbioc_oshare *dp, struct smb_sharespec *spec)
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{
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bzero(spec, sizeof(*spec));
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spec->mode = dp->ioc_mode;
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spec->rights = dp->ioc_rights;
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spec->owner = dp->ioc_owner;
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spec->group = dp->ioc_group;
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spec->name = dp->ioc_share;
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spec->stype = dp->ioc_stype;
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spec->pass = dp->ioc_password;
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return 0;
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}
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int
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smb_usr_lookup(struct smbioc_lookup *dp, struct smb_cred *scred,
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struct smb_vc **vcpp, struct smb_share **sspp)
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{
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struct smb_vc *vcp = NULL;
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struct smb_vcspec vspec; /* XXX */
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struct smb_sharespec sspec, *sspecp = NULL; /* XXX */
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int error;
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if (dp->ioc_level < SMBL_VC || dp->ioc_level > SMBL_SHARE)
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return EINVAL;
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error = smb_usr_vc2spec(&dp->ioc_ssn, &vspec);
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if (error)
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return error;
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if (dp->ioc_flags & SMBLK_CREATE)
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vspec.flags |= SMBV_CREATE;
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if (dp->ioc_level >= SMBL_SHARE) {
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error = smb_usr_share2spec(&dp->ioc_sh, &sspec);
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if (error)
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goto out;
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sspecp = &sspec;
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}
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error = smb_sm_lookup(&vspec, sspecp, scred, &vcp);
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if (error == 0) {
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*vcpp = vcp;
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*sspp = vspec.ssp;
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}
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out:
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smb_usr_vcspec_free(&vspec);
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return error;
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}
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/*
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* Connect to the resource specified by smbioc_ossn structure.
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* It may either find an existing connection or try to establish a new one.
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* If no errors occured smb_vc returned locked and referenced.
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*/
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int
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smb_usr_opensession(struct smbioc_ossn *dp, struct smb_cred *scred,
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struct smb_vc **vcpp)
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{
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struct smb_vc *vcp = NULL;
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struct smb_vcspec vspec;
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int error;
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error = smb_usr_vc2spec(dp, &vspec);
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if (error)
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return error;
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if (dp->ioc_opt & SMBVOPT_CREATE)
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vspec.flags |= SMBV_CREATE;
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error = smb_sm_lookup(&vspec, NULL, scred, &vcp);
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smb_usr_vcspec_free(&vspec);
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return error;
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}
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int
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smb_usr_openshare(struct smb_vc *vcp, struct smbioc_oshare *dp,
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struct smb_cred *scred, struct smb_share **sspp)
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{
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struct smb_share *ssp;
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struct smb_sharespec shspec;
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int error;
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error = smb_usr_share2spec(dp, &shspec);
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if (error)
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return error;
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error = smb_vc_lookupshare(vcp, &shspec, scred, &ssp);
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if (error == 0) {
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*sspp = ssp;
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return 0;
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}
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if ((dp->ioc_opt & SMBSOPT_CREATE) == 0)
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return error;
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error = smb_share_create(vcp, &shspec, scred, &ssp);
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if (error)
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return error;
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error = smb_smb_treeconnect(ssp, scred);
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if (error) {
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smb_share_put(ssp, scred);
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} else
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*sspp = ssp;
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return error;
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}
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int
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smb_usr_simplerequest(struct smb_share *ssp, struct smbioc_rq *dp,
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struct smb_cred *scred)
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{
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struct smb_rq *rqp;
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struct mbchain *mbp;
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struct mdchain *mdp;
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u_int8_t wc;
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u_int16_t bc;
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int error;
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switch (dp->ioc_cmd) {
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case SMB_COM_TRANSACTION2:
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case SMB_COM_TRANSACTION2_SECONDARY:
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case SMB_COM_CLOSE_AND_TREE_DISC:
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case SMB_COM_TREE_CONNECT:
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case SMB_COM_TREE_DISCONNECT:
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case SMB_COM_NEGOTIATE:
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case SMB_COM_SESSION_SETUP_ANDX:
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case SMB_COM_LOGOFF_ANDX:
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case SMB_COM_TREE_CONNECT_ANDX:
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return EPERM;
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}
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rqp = malloc(sizeof(struct smb_rq), M_SMBTEMP, M_WAITOK);
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error = smb_rq_init(rqp, SSTOCP(ssp), dp->ioc_cmd, scred);
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if (error) {
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free(rqp, M_SMBTEMP);
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return error;
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}
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mbp = &rqp->sr_rq;
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smb_rq_wstart(rqp);
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error = mb_put_mem(mbp, dp->ioc_twords, dp->ioc_twc * 2, MB_MUSER);
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if (error)
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goto bad;
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smb_rq_wend(rqp);
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smb_rq_bstart(rqp);
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error = mb_put_mem(mbp, dp->ioc_tbytes, dp->ioc_tbc, MB_MUSER);
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if (error)
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goto bad;
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smb_rq_bend(rqp);
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error = smb_rq_simple(rqp);
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if (error)
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goto bad;
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mdp = &rqp->sr_rp;
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md_get_uint8(mdp, &wc);
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dp->ioc_rwc = wc;
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wc *= 2;
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if (wc > dp->ioc_rpbufsz) {
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error = EBADRPC;
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goto bad;
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}
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error = md_get_mem(mdp, dp->ioc_rpbuf, wc, MB_MUSER);
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if (error)
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goto bad;
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md_get_uint16le(mdp, &bc);
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if ((wc + bc) > dp->ioc_rpbufsz) {
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error = EBADRPC;
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goto bad;
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}
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dp->ioc_rbc = bc;
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error = md_get_mem(mdp, dp->ioc_rpbuf + wc, bc, MB_MUSER);
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bad:
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dp->ioc_errclass = rqp->sr_errclass;
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dp->ioc_serror = rqp->sr_serror;
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dp->ioc_error = rqp->sr_error;
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smb_rq_done(rqp);
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free(rqp, M_SMBTEMP);
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return error;
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}
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static int
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smb_cpdatain(struct mbchain *mbp, int len, caddr_t data)
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{
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int error;
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if (len == 0)
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return 0;
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error = mb_init(mbp);
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if (error)
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return error;
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return mb_put_mem(mbp, data, len, MB_MUSER);
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}
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int
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smb_usr_t2request(struct smb_share *ssp, struct smbioc_t2rq *dp,
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struct smb_cred *scred)
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{
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struct smb_t2rq *t2p;
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struct mdchain *mdp;
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int error, len;
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if (dp->ioc_setupcnt > 3)
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return EINVAL;
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t2p = malloc(sizeof(struct smb_t2rq), M_SMBTEMP, M_WAITOK);
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error = smb_t2_init(t2p, SSTOCP(ssp), dp->ioc_setup[0], scred);
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if (error) {
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free(t2p, M_SMBTEMP);
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return error;
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}
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len = t2p->t2_setupcount = dp->ioc_setupcnt;
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if (len > 1)
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t2p->t2_setupdata = dp->ioc_setup;
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if (dp->ioc_name) {
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t2p->t_name = smb_strdupin(dp->ioc_name, 128);
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if (t2p->t_name == NULL) {
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error = ENOMEM;
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goto bad;
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}
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}
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t2p->t2_maxscount = 0;
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t2p->t2_maxpcount = dp->ioc_rparamcnt;
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t2p->t2_maxdcount = dp->ioc_rdatacnt;
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error = smb_cpdatain(&t2p->t2_tparam, dp->ioc_tparamcnt, dp->ioc_tparam);
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if (error)
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goto bad;
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error = smb_cpdatain(&t2p->t2_tdata, dp->ioc_tdatacnt, dp->ioc_tdata);
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if (error)
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goto bad;
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error = smb_t2_request(t2p);
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if (error)
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goto bad;
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mdp = &t2p->t2_rparam;
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if (mdp->md_top) {
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len = m_fixhdr(mdp->md_top);
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if (len > dp->ioc_rparamcnt) {
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error = EMSGSIZE;
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goto bad;
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}
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dp->ioc_rparamcnt = len;
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error = md_get_mem(mdp, dp->ioc_rparam, len, MB_MUSER);
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if (error)
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goto bad;
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} else
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dp->ioc_rparamcnt = 0;
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mdp = &t2p->t2_rdata;
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if (mdp->md_top) {
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len = m_fixhdr(mdp->md_top);
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if (len > dp->ioc_rdatacnt) {
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error = EMSGSIZE;
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goto bad;
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}
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dp->ioc_rdatacnt = len;
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error = md_get_mem(mdp, dp->ioc_rdata, len, MB_MUSER);
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} else
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dp->ioc_rdatacnt = 0;
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bad:
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if (t2p->t_name)
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smb_strfree(t2p->t_name);
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smb_t2_done(t2p);
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free(t2p, M_SMBTEMP);
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return error;
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}
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