5d4c069fc5
goto and abstracted by the itry, ithrow and icatch macros (among others). The problem with this code is that it doesn't compile on ia64. The compiler is sufficiently confused that it inserts a call to __ia64_save_stack_nonlock(). This is a magic function that saves enough of the stack to allow for non-local gotos, such as would be the case for nested functions. Since it's not a compiler defined function, it needs a runtime implementation. This we have not in a standalone compilation as is the kernel. There's no indication that the compiler is not confused on other platforms. It's likely that saving the stack in those cases is trivial enough that the compiler doesn't need to off-load the complexity to a runtime function. The code is believed to be correctly translated, but has not been tested. The overall structure remained the same, except that it's made explicit. The macros that implement the try/catch construct have been removed to avoid reintroduction of their use. It's not a good idea. In general the rewritten code is slightly more optimal in that it doesn't need as much stack space and generally is smaller in size. Found by: LINT
890 lines
21 KiB
C
890 lines
21 KiB
C
/*
|
|
* Copyright (c) 2000-2001 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Boris Popov.
|
|
* 4. Neither the name of the author nor the names of any co-contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* Connection engine.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/socketvar.h>
|
|
|
|
#include <sys/iconv.h>
|
|
|
|
#include <netsmb/smb.h>
|
|
#include <netsmb/smb_subr.h>
|
|
#include <netsmb/smb_conn.h>
|
|
#include <netsmb/smb_tran.h>
|
|
#include <netsmb/smb_trantcp.h>
|
|
|
|
static struct smb_connobj smb_vclist;
|
|
static int smb_vcnext = 1; /* next unique id for VC */
|
|
|
|
SYSCTL_NODE(_net, OID_AUTO, smb, CTLFLAG_RW, NULL, "SMB protocol");
|
|
|
|
MALLOC_DEFINE(M_SMBCONN, "SMB conn", "SMB connection");
|
|
|
|
static void smb_co_init(struct smb_connobj *cp, int level, char *objname,
|
|
struct thread *td);
|
|
static void smb_co_done(struct smb_connobj *cp);
|
|
static int smb_co_lockstatus(struct smb_connobj *cp, struct thread *td);
|
|
|
|
static int smb_vc_disconnect(struct smb_vc *vcp);
|
|
static void smb_vc_free(struct smb_connobj *cp);
|
|
static void smb_vc_gone(struct smb_connobj *cp, struct smb_cred *scred);
|
|
static smb_co_free_t smb_share_free;
|
|
static smb_co_gone_t smb_share_gone;
|
|
|
|
static int smb_sysctl_treedump(SYSCTL_HANDLER_ARGS);
|
|
|
|
SYSCTL_PROC(_net_smb, OID_AUTO, treedump, CTLFLAG_RD | CTLTYPE_OPAQUE,
|
|
NULL, 0, smb_sysctl_treedump, "S,treedump", "Requester tree");
|
|
|
|
int
|
|
smb_sm_init(void)
|
|
{
|
|
|
|
smb_co_init(&smb_vclist, SMBL_SM, "smbsm", curthread);
|
|
smb_co_unlock(&smb_vclist, 0, curthread);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
smb_sm_done(void)
|
|
{
|
|
|
|
/* XXX: hold the mutex */
|
|
if (smb_vclist.co_usecount > 1) {
|
|
SMBERROR("%d connections still active\n", smb_vclist.co_usecount - 1);
|
|
return EBUSY;
|
|
}
|
|
smb_co_done(&smb_vclist);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
smb_sm_lockvclist(int flags, struct thread *td)
|
|
{
|
|
|
|
return smb_co_lock(&smb_vclist, flags | LK_CANRECURSE, td);
|
|
}
|
|
|
|
static void
|
|
smb_sm_unlockvclist(struct thread *td)
|
|
{
|
|
|
|
smb_co_unlock(&smb_vclist, LK_RELEASE, td);
|
|
}
|
|
|
|
static int
|
|
smb_sm_lookupint(struct smb_vcspec *vcspec, struct smb_sharespec *shspec,
|
|
struct smb_cred *scred, struct smb_vc **vcpp)
|
|
{
|
|
struct thread *td = scred->scr_td;
|
|
struct smb_vc *vcp;
|
|
int exact = 1;
|
|
int error;
|
|
|
|
vcspec->shspec = shspec;
|
|
error = ENOENT;
|
|
SMBCO_FOREACH((struct smb_connobj*)vcp, &smb_vclist) {
|
|
error = smb_vc_lock(vcp, LK_EXCLUSIVE, td);
|
|
if (error)
|
|
continue;
|
|
|
|
if ((vcp->obj.co_flags & SMBV_PRIVATE) ||
|
|
!CONNADDREQ(vcp->vc_paddr, vcspec->sap) ||
|
|
strcmp(vcp->vc_username, vcspec->username) != 0)
|
|
goto err1;
|
|
if (vcspec->owner != SMBM_ANY_OWNER) {
|
|
if (vcp->vc_uid != vcspec->owner)
|
|
goto err1;
|
|
} else
|
|
exact = 0;
|
|
if (vcspec->group != SMBM_ANY_GROUP) {
|
|
if (vcp->vc_grp != vcspec->group)
|
|
goto err1;
|
|
} else
|
|
exact = 0;
|
|
if (vcspec->mode & SMBM_EXACT) {
|
|
if (!exact || (vcspec->mode & SMBM_MASK) !=
|
|
vcp->vc_mode)
|
|
goto err1;
|
|
}
|
|
if (smb_vc_access(vcp, scred, vcspec->mode) != 0)
|
|
goto err1;
|
|
vcspec->ssp = NULL;
|
|
if (shspec) {
|
|
error = (int)smb_vc_lookupshare(vcp, shspec, scred,
|
|
&vcspec->ssp);
|
|
if (error)
|
|
goto fail;
|
|
}
|
|
error = 0;
|
|
break;
|
|
err1:
|
|
error = 1;
|
|
fail:
|
|
smb_vc_unlock(vcp, 0, td);
|
|
}
|
|
if (vcp) {
|
|
smb_vc_ref(vcp);
|
|
*vcpp = vcp;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
smb_sm_lookup(struct smb_vcspec *vcspec, struct smb_sharespec *shspec,
|
|
struct smb_cred *scred, struct smb_vc **vcpp)
|
|
{
|
|
struct thread *td = scred->scr_td;
|
|
struct smb_vc *vcp;
|
|
struct smb_share *ssp = NULL;
|
|
int error;
|
|
|
|
*vcpp = vcp = NULL;
|
|
|
|
error = smb_sm_lockvclist(LK_EXCLUSIVE, td);
|
|
if (error)
|
|
return error;
|
|
error = smb_sm_lookupint(vcspec, shspec, scred, vcpp);
|
|
if (error == 0 || (vcspec->flags & SMBV_CREATE) == 0) {
|
|
smb_sm_unlockvclist(td);
|
|
return error;
|
|
}
|
|
error = smb_sm_lookupint(vcspec, NULL, scred, &vcp);
|
|
if (error) {
|
|
error = smb_vc_create(vcspec, scred, &vcp);
|
|
if (error)
|
|
goto out;
|
|
error = smb_vc_connect(vcp, scred);
|
|
if (error)
|
|
goto out;
|
|
}
|
|
if (shspec == NULL)
|
|
goto out;
|
|
error = smb_share_create(vcp, shspec, scred, &ssp);
|
|
if (error)
|
|
goto out;
|
|
error = smb_smb_treeconnect(ssp, scred);
|
|
if (error == 0)
|
|
vcspec->ssp = ssp;
|
|
else
|
|
smb_share_put(ssp, scred);
|
|
out:
|
|
smb_sm_unlockvclist(td);
|
|
if (error == 0)
|
|
*vcpp = vcp;
|
|
else if (vcp)
|
|
smb_vc_put(vcp, scred);
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Common code for connection object
|
|
*/
|
|
static void
|
|
smb_co_init(struct smb_connobj *cp, int level, char *objname, struct thread *td)
|
|
{
|
|
SLIST_INIT(&cp->co_children);
|
|
smb_sl_init(&cp->co_interlock, objname);
|
|
lockinit(&cp->co_lock, PZERO, objname, 0, 0);
|
|
cp->co_level = level;
|
|
cp->co_usecount = 1;
|
|
KASSERT(smb_co_lock(cp, LK_EXCLUSIVE, td) == 0, ("smb_co_init: lock failed"));
|
|
}
|
|
|
|
static void
|
|
smb_co_done(struct smb_connobj *cp)
|
|
{
|
|
smb_sl_destroy(&cp->co_interlock);
|
|
lockdestroy(&cp->co_lock);
|
|
}
|
|
|
|
static void
|
|
smb_co_gone(struct smb_connobj *cp, struct smb_cred *scred)
|
|
{
|
|
struct smb_connobj *parent;
|
|
|
|
if (cp->co_gone)
|
|
cp->co_gone(cp, scred);
|
|
parent = cp->co_parent;
|
|
if (parent) {
|
|
smb_co_lock(parent, LK_EXCLUSIVE, scred->scr_td);
|
|
SLIST_REMOVE(&parent->co_children, cp, smb_connobj, co_next);
|
|
smb_co_put(parent, scred);
|
|
}
|
|
if (cp->co_free)
|
|
cp->co_free(cp);
|
|
}
|
|
|
|
void
|
|
smb_co_ref(struct smb_connobj *cp)
|
|
{
|
|
|
|
SMB_CO_LOCK(cp);
|
|
cp->co_usecount++;
|
|
SMB_CO_UNLOCK(cp);
|
|
}
|
|
|
|
void
|
|
smb_co_rele(struct smb_connobj *cp, struct smb_cred *scred)
|
|
{
|
|
struct thread *td = scred->scr_td;
|
|
|
|
SMB_CO_LOCK(cp);
|
|
if (cp->co_usecount > 1) {
|
|
cp->co_usecount--;
|
|
SMB_CO_UNLOCK(cp);
|
|
return;
|
|
}
|
|
if (cp->co_usecount == 0) {
|
|
SMBERROR("negative use_count for object %d", cp->co_level);
|
|
SMB_CO_UNLOCK(cp);
|
|
return;
|
|
}
|
|
cp->co_usecount--;
|
|
cp->co_flags |= SMBO_GONE;
|
|
|
|
lockmgr(&cp->co_lock, LK_DRAIN | LK_INTERLOCK, &cp->co_interlock, td);
|
|
smb_co_gone(cp, scred);
|
|
}
|
|
|
|
int
|
|
smb_co_get(struct smb_connobj *cp, int flags, struct smb_cred *scred)
|
|
{
|
|
int error;
|
|
|
|
if ((flags & LK_INTERLOCK) == 0)
|
|
SMB_CO_LOCK(cp);
|
|
cp->co_usecount++;
|
|
error = smb_co_lock(cp, flags | LK_INTERLOCK, scred->scr_td);
|
|
if (error) {
|
|
SMB_CO_LOCK(cp);
|
|
cp->co_usecount--;
|
|
SMB_CO_UNLOCK(cp);
|
|
return error;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
smb_co_put(struct smb_connobj *cp, struct smb_cred *scred)
|
|
{
|
|
struct thread *td = scred->scr_td;
|
|
int flags;
|
|
|
|
flags = LK_RELEASE;
|
|
SMB_CO_LOCK(cp);
|
|
if (cp->co_usecount > 1) {
|
|
cp->co_usecount--;
|
|
} else if (cp->co_usecount == 1) {
|
|
cp->co_usecount--;
|
|
cp->co_flags |= SMBO_GONE;
|
|
flags = LK_DRAIN;
|
|
} else {
|
|
SMBERROR("negative usecount");
|
|
}
|
|
lockmgr(&cp->co_lock, LK_RELEASE | LK_INTERLOCK, &cp->co_interlock, td);
|
|
if ((cp->co_flags & SMBO_GONE) == 0)
|
|
return;
|
|
lockmgr(&cp->co_lock, LK_DRAIN, NULL, td);
|
|
smb_co_gone(cp, scred);
|
|
}
|
|
|
|
int
|
|
smb_co_lockstatus(struct smb_connobj *cp, struct thread *td)
|
|
{
|
|
return lockstatus(&cp->co_lock, td);
|
|
}
|
|
|
|
int
|
|
smb_co_lock(struct smb_connobj *cp, int flags, struct thread *td)
|
|
{
|
|
|
|
if (cp->co_flags & SMBO_GONE)
|
|
return EINVAL;
|
|
if ((flags & LK_TYPE_MASK) == 0)
|
|
flags |= LK_EXCLUSIVE;
|
|
if (smb_co_lockstatus(cp, td) == LK_EXCLUSIVE &&
|
|
(flags & LK_CANRECURSE) == 0) {
|
|
SMBERROR("recursive lock for object %d\n", cp->co_level);
|
|
return 0;
|
|
}
|
|
return lockmgr(&cp->co_lock, flags, &cp->co_interlock, td);
|
|
}
|
|
|
|
void
|
|
smb_co_unlock(struct smb_connobj *cp, int flags, struct thread *td)
|
|
{
|
|
(void)lockmgr(&cp->co_lock, flags | LK_RELEASE, &cp->co_interlock, td);
|
|
}
|
|
|
|
static void
|
|
smb_co_addchild(struct smb_connobj *parent, struct smb_connobj *child)
|
|
{
|
|
KASSERT(smb_co_lockstatus(parent, curthread) == LK_EXCLUSIVE, ("smb_co_addchild: parent not locked"));
|
|
KASSERT(smb_co_lockstatus(child, curthread) == LK_EXCLUSIVE, ("smb_co_addchild: child not locked"));
|
|
|
|
smb_co_ref(parent);
|
|
SLIST_INSERT_HEAD(&parent->co_children, child, co_next);
|
|
child->co_parent = parent;
|
|
}
|
|
|
|
/*
|
|
* Session implementation
|
|
*/
|
|
|
|
int
|
|
smb_vc_create(struct smb_vcspec *vcspec,
|
|
struct smb_cred *scred, struct smb_vc **vcpp)
|
|
{
|
|
struct smb_vc *vcp;
|
|
struct thread *td = scred->scr_td;
|
|
struct ucred *cred = scred->scr_cred;
|
|
uid_t uid = vcspec->owner;
|
|
gid_t gid = vcspec->group;
|
|
uid_t realuid = cred->cr_uid;
|
|
char *domain = vcspec->domain;
|
|
int error, isroot;
|
|
|
|
isroot = smb_suser(cred) == 0;
|
|
/*
|
|
* Only superuser can create VCs 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;
|
|
|
|
vcp = smb_zmalloc(sizeof(*vcp), M_SMBCONN, M_WAITOK);
|
|
smb_co_init(VCTOCP(vcp), SMBL_VC, "smb_vc", td);
|
|
vcp->obj.co_free = smb_vc_free;
|
|
vcp->obj.co_gone = smb_vc_gone;
|
|
vcp->vc_number = smb_vcnext++;
|
|
vcp->vc_timo = SMB_DEFRQTIMO;
|
|
vcp->vc_smbuid = SMB_UID_UNKNOWN;
|
|
vcp->vc_mode = vcspec->rights & SMBM_MASK;
|
|
vcp->obj.co_flags = vcspec->flags & (SMBV_PRIVATE | SMBV_SINGLESHARE);
|
|
vcp->vc_tdesc = &smb_tran_nbtcp_desc;
|
|
|
|
if (uid == SMBM_ANY_OWNER)
|
|
uid = realuid;
|
|
if (gid == SMBM_ANY_GROUP)
|
|
gid = cred->cr_groups[0];
|
|
vcp->vc_uid = uid;
|
|
vcp->vc_grp = gid;
|
|
|
|
smb_sl_init(&vcp->vc_stlock, "vcstlock");
|
|
error = ENOMEM;
|
|
|
|
vcp->vc_paddr = dup_sockaddr(vcspec->sap, 1);
|
|
if (vcp->vc_paddr == NULL)
|
|
goto fail;
|
|
vcp->vc_laddr = dup_sockaddr(vcspec->lap, 1);
|
|
if (vcp->vc_laddr == NULL)
|
|
goto fail;
|
|
vcp->vc_pass = smb_strdup(vcspec->pass);
|
|
if (vcp->vc_pass == NULL)
|
|
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)
|
|
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_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, struct thread *td)
|
|
{
|
|
return smb_co_lock(VCTOCP(vcp), flags, td);
|
|
}
|
|
|
|
void
|
|
smb_vc_unlock(struct smb_vc *vcp, int flags, struct thread *td)
|
|
{
|
|
smb_co_unlock(VCTOCP(vcp), flags, td);
|
|
}
|
|
|
|
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 thread *td = scred->scr_td;
|
|
struct smb_share *ssp = NULL;
|
|
int error;
|
|
|
|
*sspp = NULL;
|
|
dp->scred = scred;
|
|
SMBCO_FOREACH((struct smb_connobj*)ssp, VCTOCP(vcp)) {
|
|
error = smb_share_lock(ssp, LK_EXCLUSIVE, td);
|
|
if (error)
|
|
continue;
|
|
if (smb_vc_cmpshare(ssp, dp) == 0)
|
|
break;
|
|
smb_share_unlock(ssp, 0, td);
|
|
}
|
|
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 thread *td = scred->scr_td;
|
|
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", td);
|
|
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, struct thread *td)
|
|
{
|
|
return smb_co_lock(SSTOCP(ssp), flags, td);
|
|
}
|
|
|
|
void
|
|
smb_share_unlock(struct smb_share *ssp, int flags, struct thread *td)
|
|
{
|
|
smb_co_unlock(SSTOCP(ssp), flags, td);
|
|
}
|
|
|
|
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_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);
|
|
sysctl_wire_old_buffer(req, 0);
|
|
error = smb_sm_lockvclist(LK_SHARED, td);
|
|
if (error)
|
|
return error;
|
|
SMBCO_FOREACH((struct smb_connobj*)vcp, &smb_vclist) {
|
|
error = smb_vc_lock(vcp, LK_SHARED, td);
|
|
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, td);
|
|
break;
|
|
}
|
|
SMBCO_FOREACH((struct smb_connobj*)ssp, VCTOCP(vcp)) {
|
|
error = smb_share_lock(ssp, LK_SHARED, td);
|
|
if (error) {
|
|
error = 0;
|
|
continue;
|
|
}
|
|
smb_share_getinfo(ssp, &ssi);
|
|
smb_share_unlock(ssp, 0, td);
|
|
error = SYSCTL_OUT(req, &ssi, sizeof(struct smb_share_info));
|
|
if (error)
|
|
break;
|
|
}
|
|
smb_vc_unlock(vcp, 0, td);
|
|
if (error)
|
|
break;
|
|
}
|
|
if (!error) {
|
|
itype = SMB_INFO_NONE;
|
|
error = SYSCTL_OUT(req, &itype, sizeof(itype));
|
|
}
|
|
smb_sm_unlockvclist(td);
|
|
return error;
|
|
}
|