[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/netsmb/smb_dev.c

Version: -  FREEBSD  -  FREEBSD10  -  FREEBSD9  -  FREEBSD92  -  FREEBSD91  -  FREEBSD90  -  FREEBSD8  -  FREEBSD82  -  FREEBSD81  -  FREEBSD80  -  FREEBSD7  -  FREEBSD74  -  FREEBSD73  -  FREEBSD72  -  FREEBSD71  -  FREEBSD70  -  FREEBSD6  -  FREEBSD64  -  FREEBSD63  -  FREEBSD62  -  FREEBSD61  -  FREEBSD60  -  FREEBSD5  -  FREEBSD55  -  FREEBSD54  -  FREEBSD53  -  FREEBSD52  -  FREEBSD51  -  FREEBSD50  -  FREEBSD4  -  FREEBSD3  -  FREEBSD22  -  cheribsd  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1  -  FREEBSD-LIBC  -  FREEBSD8-LIBC  -  FREEBSD7-LIBC  -  FREEBSD6-LIBC  -  GLIBC27 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * Copyright (c) 2000-2001 Boris Popov
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *    This product includes software developed by Boris Popov.
   16  * 4. Neither the name of the author nor the names of any co-contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  */
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD: src/sys/netsmb/smb_dev.c,v 1.27.2.2 2006/01/13 10:23:39 rwatson Exp $");
   35 
   36 #include <sys/param.h>
   37 #include <sys/kernel.h>
   38 #include <sys/module.h>
   39 #include <sys/systm.h>
   40 #include <sys/conf.h>
   41 #include <sys/fcntl.h>
   42 #include <sys/ioccom.h>
   43 #include <sys/lock.h>
   44 #include <sys/malloc.h>
   45 #include <sys/file.h>           /* Must come after sys/malloc.h */
   46 #include <sys/filedesc.h>
   47 #include <sys/mbuf.h>
   48 #include <sys/poll.h>
   49 #include <sys/proc.h>
   50 #include <sys/select.h>
   51 #include <sys/socket.h>
   52 #include <sys/socketvar.h>
   53 #include <sys/sysctl.h>
   54 #include <sys/uio.h>
   55 #include <sys/vnode.h>
   56 
   57 #include <net/if.h>
   58 
   59 #include <netsmb/smb.h>
   60 #include <netsmb/smb_conn.h>
   61 #include <netsmb/smb_subr.h>
   62 #include <netsmb/smb_dev.h>
   63 
   64 #define SMB_GETDEV(dev)         ((struct smb_dev*)(dev)->si_drv1)
   65 #define SMB_CHECKMINOR(dev)     do { \
   66                                     sdp = SMB_GETDEV(dev); \
   67                                     if (sdp == NULL) return ENXIO; \
   68                                 } while(0)
   69 
   70 static d_open_t  nsmb_dev_open;
   71 static d_close_t nsmb_dev_close;
   72 static d_ioctl_t nsmb_dev_ioctl;
   73 
   74 MODULE_DEPEND(netsmb, libiconv, 1, 1, 2);
   75 MODULE_VERSION(netsmb, NSMB_VERSION);
   76 
   77 static int smb_version = NSMB_VERSION;
   78 
   79 
   80 SYSCTL_DECL(_net_smb);
   81 SYSCTL_INT(_net_smb, OID_AUTO, version, CTLFLAG_RD, &smb_version, 0, "");
   82 
   83 static MALLOC_DEFINE(M_NSMBDEV, "NETSMBDEV", "NET/SMB device");
   84 
   85 
   86 /*
   87 int smb_dev_queue(struct smb_dev *ndp, struct smb_rq *rqp, int prio);
   88 */
   89 
   90 static struct cdevsw nsmb_cdevsw = {
   91         .d_version =    D_VERSION,
   92         .d_flags =      D_NEEDGIANT,
   93         .d_open =       nsmb_dev_open,
   94         .d_close =      nsmb_dev_close,
   95         .d_ioctl =      nsmb_dev_ioctl,
   96         .d_name =       NSMB_NAME
   97 };
   98 
   99 static eventhandler_tag nsmb_dev_tag;
  100 
  101 static void
  102 nsmb_dev_clone(void *arg, struct ucred *cred, char *name, int namelen,
  103     struct cdev **dev)
  104 {
  105         int u;
  106 
  107         if (*dev != NULL)
  108                 return;
  109         if (dev_stdclone(name, NULL, NSMB_NAME, &u) != 1)
  110                 return;
  111         *dev = make_dev(&nsmb_cdevsw, unit2minor(u), 0, 0, 0600,
  112             NSMB_NAME"%d", u);
  113         dev_ref(*dev);
  114 }
  115 
  116 static int
  117 nsmb_dev_open(struct cdev *dev, int oflags, int devtype, struct thread *td)
  118 {
  119         struct smb_dev *sdp;
  120         struct ucred *cred = td->td_ucred;
  121         int s;
  122 
  123         sdp = SMB_GETDEV(dev);
  124         if (sdp && (sdp->sd_flags & NSMBFL_OPEN))
  125                 return EBUSY;
  126         if (sdp == NULL) {
  127                 sdp = malloc(sizeof(*sdp), M_NSMBDEV, M_WAITOK);
  128                 dev->si_drv1 = (void*)sdp;
  129         }
  130         /*
  131          * XXX: this is just crazy - make a device for an already passed device...
  132          * someone should take care of it.
  133          */
  134         if ((dev->si_flags & SI_NAMED) == 0)
  135                 make_dev(&nsmb_cdevsw, minor(dev), cred->cr_uid, cred->cr_gid, 0700,
  136                     NSMB_NAME"%d", dev2unit(dev));
  137         bzero(sdp, sizeof(*sdp));
  138 /*
  139         STAILQ_INIT(&sdp->sd_rqlist);
  140         STAILQ_INIT(&sdp->sd_rplist);
  141         bzero(&sdp->sd_pollinfo, sizeof(struct selinfo));
  142 */
  143         s = splimp();
  144         sdp->sd_level = -1;
  145         sdp->sd_flags |= NSMBFL_OPEN;
  146         splx(s);
  147         return 0;
  148 }
  149 
  150 static int
  151 nsmb_dev_close(struct cdev *dev, int flag, int fmt, struct thread *td)
  152 {
  153         struct smb_dev *sdp;
  154         struct smb_vc *vcp;
  155         struct smb_share *ssp;
  156         struct smb_cred scred;
  157         int s;
  158 
  159         SMB_CHECKMINOR(dev);
  160         s = splimp();
  161         if ((sdp->sd_flags & NSMBFL_OPEN) == 0) {
  162                 splx(s);
  163                 return EBADF;
  164         }
  165         smb_makescred(&scred, td, NULL);
  166         ssp = sdp->sd_share;
  167         if (ssp != NULL)
  168                 smb_share_rele(ssp, &scred);
  169         vcp = sdp->sd_vc;
  170         if (vcp != NULL)
  171                 smb_vc_rele(vcp, &scred);
  172 /*
  173         smb_flushq(&sdp->sd_rqlist);
  174         smb_flushq(&sdp->sd_rplist);
  175 */
  176         dev->si_drv1 = NULL;
  177         free(sdp, M_NSMBDEV);
  178         destroy_dev(dev);
  179         splx(s);
  180         return 0;
  181 }
  182 
  183 
  184 static int
  185 nsmb_dev_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
  186 {
  187         struct smb_dev *sdp;
  188         struct smb_vc *vcp;
  189         struct smb_share *ssp;
  190         struct smb_cred scred;
  191         int error = 0;
  192 
  193         SMB_CHECKMINOR(dev);
  194         if ((sdp->sd_flags & NSMBFL_OPEN) == 0)
  195                 return EBADF;
  196 
  197         smb_makescred(&scred, td, NULL);
  198         switch (cmd) {
  199             case SMBIOC_OPENSESSION:
  200                 if (sdp->sd_vc)
  201                         return EISCONN;
  202                 error = smb_usr_opensession((struct smbioc_ossn*)data,
  203                     &scred, &vcp);
  204                 if (error)
  205                         break;
  206                 sdp->sd_vc = vcp;
  207                 smb_vc_unlock(vcp, 0, td);
  208                 sdp->sd_level = SMBL_VC;
  209                 break;
  210             case SMBIOC_OPENSHARE:
  211                 if (sdp->sd_share)
  212                         return EISCONN;
  213                 if (sdp->sd_vc == NULL)
  214                         return ENOTCONN;
  215                 error = smb_usr_openshare(sdp->sd_vc,
  216                     (struct smbioc_oshare*)data, &scred, &ssp);
  217                 if (error)
  218                         break;
  219                 sdp->sd_share = ssp;
  220                 smb_share_unlock(ssp, 0, td);
  221                 sdp->sd_level = SMBL_SHARE;
  222                 break;
  223             case SMBIOC_REQUEST:
  224                 if (sdp->sd_share == NULL)
  225                         return ENOTCONN;
  226                 error = smb_usr_simplerequest(sdp->sd_share,
  227                     (struct smbioc_rq*)data, &scred);
  228                 break;
  229             case SMBIOC_T2RQ:
  230                 if (sdp->sd_share == NULL)
  231                         return ENOTCONN;
  232                 error = smb_usr_t2request(sdp->sd_share,
  233                     (struct smbioc_t2rq*)data, &scred);
  234                 break;
  235             case SMBIOC_SETFLAGS: {
  236                 struct smbioc_flags *fl = (struct smbioc_flags*)data;
  237                 int on;
  238         
  239                 if (fl->ioc_level == SMBL_VC) {
  240                         if (fl->ioc_mask & SMBV_PERMANENT) {
  241                                 on = fl->ioc_flags & SMBV_PERMANENT;
  242                                 if ((vcp = sdp->sd_vc) == NULL)
  243                                         return ENOTCONN;
  244                                 error = smb_vc_get(vcp, LK_EXCLUSIVE, &scred);
  245                                 if (error)
  246                                         break;
  247                                 if (on && (vcp->obj.co_flags & SMBV_PERMANENT) == 0) {
  248                                         vcp->obj.co_flags |= SMBV_PERMANENT;
  249                                         smb_vc_ref(vcp);
  250                                 } else if (!on && (vcp->obj.co_flags & SMBV_PERMANENT)) {
  251                                         vcp->obj.co_flags &= ~SMBV_PERMANENT;
  252                                         smb_vc_rele(vcp, &scred);
  253                                 }
  254                                 smb_vc_put(vcp, &scred);
  255                         } else
  256                                 error = EINVAL;
  257                 } else if (fl->ioc_level == SMBL_SHARE) {
  258                         if (fl->ioc_mask & SMBS_PERMANENT) {
  259                                 on = fl->ioc_flags & SMBS_PERMANENT;
  260                                 if ((ssp = sdp->sd_share) == NULL)
  261                                         return ENOTCONN;
  262                                 error = smb_share_get(ssp, LK_EXCLUSIVE, &scred);
  263                                 if (error)
  264                                         break;
  265                                 if (on && (ssp->obj.co_flags & SMBS_PERMANENT) == 0) {
  266                                         ssp->obj.co_flags |= SMBS_PERMANENT;
  267                                         smb_share_ref(ssp);
  268                                 } else if (!on && (ssp->obj.co_flags & SMBS_PERMANENT)) {
  269                                         ssp->obj.co_flags &= ~SMBS_PERMANENT;
  270                                         smb_share_rele(ssp, &scred);
  271                                 }
  272                                 smb_share_put(ssp, &scred);
  273                         } else
  274                                 error = EINVAL;
  275                         break;
  276                 } else
  277                         error = EINVAL;
  278                 break;
  279             }
  280             case SMBIOC_LOOKUP:
  281                 if (sdp->sd_vc || sdp->sd_share)
  282                         return EISCONN;
  283                 vcp = NULL;
  284                 ssp = NULL;
  285                 error = smb_usr_lookup((struct smbioc_lookup*)data, &scred, &vcp, &ssp);
  286                 if (error)
  287                         break;
  288                 if (vcp) {
  289                         sdp->sd_vc = vcp;
  290                         smb_vc_unlock(vcp, 0, td);
  291                         sdp->sd_level = SMBL_VC;
  292                 }
  293                 if (ssp) {
  294                         sdp->sd_share = ssp;
  295                         smb_share_unlock(ssp, 0, td);
  296                         sdp->sd_level = SMBL_SHARE;
  297                 }
  298                 break;
  299             case SMBIOC_READ: case SMBIOC_WRITE: {
  300                 struct smbioc_rw *rwrq = (struct smbioc_rw*)data;
  301                 struct uio auio;
  302                 struct iovec iov;
  303         
  304                 if ((ssp = sdp->sd_share) == NULL)
  305                         return ENOTCONN;
  306                 iov.iov_base = rwrq->ioc_base;
  307                 iov.iov_len = rwrq->ioc_cnt;
  308                 auio.uio_iov = &iov;
  309                 auio.uio_iovcnt = 1;
  310                 auio.uio_offset = rwrq->ioc_offset;
  311                 auio.uio_resid = rwrq->ioc_cnt;
  312                 auio.uio_segflg = UIO_USERSPACE;
  313                 auio.uio_rw = (cmd == SMBIOC_READ) ? UIO_READ : UIO_WRITE;
  314                 auio.uio_td = td;
  315                 if (cmd == SMBIOC_READ)
  316                         error = smb_read(ssp, rwrq->ioc_fh, &auio, &scred);
  317                 else
  318                         error = smb_write(ssp, rwrq->ioc_fh, &auio, &scred);
  319                 rwrq->ioc_cnt -= auio.uio_resid;
  320                 break;
  321             }
  322             default:
  323                 error = ENODEV;
  324         }
  325         return error;
  326 }
  327 
  328 static int
  329 nsmb_dev_load(module_t mod, int cmd, void *arg)
  330 {
  331         int error = 0;
  332 
  333         switch (cmd) {
  334             case MOD_LOAD:
  335                 error = smb_sm_init();
  336                 if (error)
  337                         break;
  338                 error = smb_iod_init();
  339                 if (error) {
  340                         smb_sm_done();
  341                         break;
  342                 }
  343                 nsmb_dev_tag = EVENTHANDLER_REGISTER(dev_clone, nsmb_dev_clone, 0, 1000);
  344                 printf("netsmb_dev: loaded\n");
  345                 break;
  346             case MOD_UNLOAD:
  347                 smb_iod_done();
  348                 error = smb_sm_done();
  349                 if (error)
  350                         break;
  351                 EVENTHANDLER_DEREGISTER(dev_clone, nsmb_dev_tag);
  352                 printf("netsmb_dev: unloaded\n");
  353                 break;
  354             default:
  355                 error = EINVAL;
  356                 break;
  357         }
  358         return error;
  359 }
  360 
  361 DEV_MODULE (dev_netsmb, nsmb_dev_load, 0);
  362 
  363 /*
  364  * Convert a file descriptor to appropriate smb_share pointer
  365  */
  366 static struct file*
  367 nsmb_getfp(struct filedesc* fdp, int fd, int flag)
  368 {
  369         struct file* fp;
  370 
  371         FILEDESC_LOCK(fdp);
  372         if (((u_int)fd) >= fdp->fd_nfiles ||
  373             (fp = fdp->fd_ofiles[fd]) == NULL ||
  374             (fp->f_flag & flag) == 0) {
  375                 FILEDESC_UNLOCK(fdp);
  376                 return (NULL);
  377         }
  378         fhold(fp);
  379         FILEDESC_UNLOCK(fdp);
  380         return (fp);
  381 }
  382 
  383 int
  384 smb_dev2share(int fd, int mode, struct smb_cred *scred,
  385         struct smb_share **sspp)
  386 {
  387         struct file *fp;
  388         struct vnode *vp;
  389         struct smb_dev *sdp;
  390         struct smb_share *ssp;
  391         struct cdev *dev;
  392         int error;
  393 
  394         fp = nsmb_getfp(scred->scr_td->td_proc->p_fd, fd, FREAD | FWRITE);
  395         if (fp == NULL)
  396                 return EBADF;
  397         vp = fp->f_vnode;
  398         if (vp == NULL) {
  399                 fdrop(fp, curthread);
  400                 return EBADF;
  401         }
  402         if (vp->v_type != VCHR) {
  403                 fdrop(fp, curthread);
  404                 return EBADF;
  405         }
  406         dev = vp->v_rdev;
  407         SMB_CHECKMINOR(dev);
  408         ssp = sdp->sd_share;
  409         if (ssp == NULL) {
  410                 fdrop(fp, curthread);
  411                 return ENOTCONN;
  412         }
  413         error = smb_share_get(ssp, LK_EXCLUSIVE, scred);
  414         if (error == 0) 
  415                 *sspp = ssp;
  416         fdrop(fp, curthread);
  417         return error;
  418 }
  419 

Cache object: d4aa05fc11ea592d9ca084fcbea67a6c


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.