/* * 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. * * $Id: smbfs_vnops.c,v 1.54 2003/09/21 20:53:11 lindak Exp $ */ #include #include #ifdef APPLE #include #else #include #endif #include #include #include #include #ifdef APPLE #include #endif #include #ifndef APPLE #include #endif #include #ifndef APPLE #include #include #include #endif #ifdef APPLE #include #include #include #endif #include #include #include #include #include #include #include #include extern void lockmgr_printinfo(struct lock__bsd__ *lkp); /* * Prototypes for SMBFS vnode operations */ #ifdef APPLE static int smbfs_create0(struct vop_create_args *); #else static int smbfs_create(struct vop_create_args *); #endif static int smbfs_mknod(struct vop_mknod_args *); static int smbfs_open(struct vop_open_args *); static int smbfs_close(struct vop_close_args *); static int smbfs_access(struct vop_access_args *); static int smbfs_getattr(struct vop_getattr_args *); static int smbfs_setattr(struct vop_setattr_args *); static int smbfs_read(struct vop_read_args *); static int smbfs_write(struct vop_write_args *); static int smbfs_fsync(struct vop_fsync_args *); static int smbfs_remove(struct vop_remove_args *); static int smbfs_link(struct vop_link_args *); static int smbfs_lookup(struct vop_lookup_args *); static int smbfs_rename(struct vop_rename_args *); #ifdef APPLE static int smbfs_mkdir0(struct vop_mkdir_args *); #else static int smbfs_mkdir(struct vop_mkdir_args *); #endif static int smbfs_rmdir(struct vop_rmdir_args *); static int smbfs_symlink(struct vop_symlink_args *); static int smbfs_readdir(struct vop_readdir_args *); static int smbfs_bmap(struct vop_bmap_args *); static int smbfs_strategy(struct vop_strategy_args *); static int smbfs_print(struct vop_print_args *); static int smbfs_pathconf(struct vop_pathconf_args *ap); static int smbfs_advlock(struct vop_advlock_args *); #ifdef APPLE static int smbfs_blktooff(struct vop_blktooff_args *); static int smbfs_offtoblk(struct vop_offtoblk_args *); static int smbfs_pagein(struct vop_pagein_args *); static int smbfs_pageout(struct vop_pageout_args *); static int smbfs_lock(struct vop_lock_args *); static int smbfs_unlock(struct vop_unlock_args *); static int smbfs_islocked(struct vop_islocked_args *); static int smbfs_getattrlist(struct vop_getattrlist_args *); #else /* APPLE */ #ifndef FB_RELENG3 static int smbfs_getextattr(struct vop_getextattr_args *ap); #endif #endif /* APPLE */ vop_t **smbfs_vnodeop_p; static struct vnodeopv_entry_desc smbfs_vnodeop_entries[] = { { &vop_default_desc, (vop_t *) vop_defaultop }, { &vop_access_desc, (vop_t *) smbfs_access }, { &vop_advlock_desc, (vop_t *) smbfs_advlock }, { &vop_bmap_desc, (vop_t *) smbfs_bmap }, { &vop_close_desc, (vop_t *) smbfs_close }, #ifdef APPLE { &vop_create_desc, (vop_t *) smbfs_create0 }, #else { &vop_create_desc, (vop_t *) smbfs_create }, #endif { &vop_fsync_desc, (vop_t *) smbfs_fsync }, { &vop_getattr_desc, (vop_t *) smbfs_getattr }, #ifdef APPLE { &vop_pagein_desc, (vop_t *) smbfs_pagein }, #else /* APPLE */ { &vop_getpages_desc, (vop_t *) smbfs_getpages }, #endif /* APPLE */ { &vop_inactive_desc, (vop_t *) smbfs_inactive }, { &vop_ioctl_desc, (vop_t *) smbfs_ioctl }, #ifdef APPLE { &vop_islocked_desc, (vop_t *) smbfs_islocked }, #else /* APPLE */ { &vop_islocked_desc, (vop_t *) vop_stdislocked }, #endif /* APPLE */ { &vop_link_desc, (vop_t *) smbfs_link }, #ifdef APPLE { &vop_lock_desc, (vop_t *) smbfs_lock }, #else /* APPLE */ { &vop_lock_desc, (vop_t *) vop_stdlock }, #endif /* APPLE */ { &vop_lookup_desc, (vop_t *) smbfs_lookup }, #ifdef APPLE { &vop_mkdir_desc, (vop_t *) smbfs_mkdir0 }, #else /* APPLE */ { &vop_mkdir_desc, (vop_t *) smbfs_mkdir }, #endif /* APPLE */ { &vop_mknod_desc, (vop_t *) smbfs_mknod }, { &vop_open_desc, (vop_t *) smbfs_open }, { &vop_pathconf_desc, (vop_t *) smbfs_pathconf }, { &vop_print_desc, (vop_t *) smbfs_print }, #ifdef APPLE { &vop_pageout_desc, (vop_t *) smbfs_pageout }, #else /* APPLE */ { &vop_putpages_desc, (vop_t *) smbfs_putpages }, #endif /* APPLE */ { &vop_read_desc, (vop_t *) smbfs_read }, { &vop_readdir_desc, (vop_t *) smbfs_readdir }, { &vop_reclaim_desc, (vop_t *) smbfs_reclaim }, { &vop_remove_desc, (vop_t *) smbfs_remove }, { &vop_rename_desc, (vop_t *) smbfs_rename }, { &vop_rmdir_desc, (vop_t *) smbfs_rmdir }, { &vop_setattr_desc, (vop_t *) smbfs_setattr }, { &vop_strategy_desc, (vop_t *) smbfs_strategy }, { &vop_symlink_desc, (vop_t *) smbfs_symlink }, #ifdef APPLE { &vop_unlock_desc, (vop_t *) smbfs_unlock }, #else /* APPLE */ { &vop_unlock_desc, (vop_t *) vop_stdunlock }, #endif /* APPLE */ { &vop_write_desc, (vop_t *) smbfs_write }, #ifdef APPLE { &vop_abortop_desc, (vop_t *) nop_abortop }, { &vop_searchfs_desc, (vop_t *) err_searchfs }, { &vop_copyfile_desc, (vop_t *) err_copyfile }, { &vop_getattrlist_desc, (vop_t *) smbfs_getattrlist}, { &vop_offtoblk_desc, (vop_t *) smbfs_offtoblk }, { &vop_blktooff_desc, (vop_t *) smbfs_blktooff }, { &vop_cmap_desc, (vop_t *) err_cmap }, /* as in nfs */ #else #ifndef FB_RELENG3 { &vop_getextattr_desc, (vop_t *) smbfs_getextattr }, /* { &vop_setextattr_desc, (vop_t *) smbfs_setextattr },*/ #endif #endif /* APPLE */ { NULL, NULL } }; #ifdef APPLE struct vnodeopv_desc smbfs_vnodeop_opv_desc = #else static struct vnodeopv_desc smbfs_vnodeop_opv_desc = #endif /* APPLE */ { &smbfs_vnodeop_p, smbfs_vnodeop_entries }; VNODEOP_SET(smbfs_vnodeop_opv_desc); #ifdef APPLE int smbtraceindx = 0; struct smbtracerec smbtracebuf[SMBTBUFSIZ] = {{0,0,0,0}}; uint smbtracemask = 0x00000000; #endif /* APPLE */ /* * smbfs_down is called when either an smb_rq_simple or smb_t2_request call * has a request time out. It uses vfs_event_signal() to tell interested * parties the connection with the server is "down". * * Note our UE Timeout is what triggers being here. The operation * timeout may be much longer. XXX If a connection has responded to * any request in the last UETIMEOUT seconds then we do not label it "down" * We probably need a different event & dialogue for the case of a * connection being responsive to at least one but not all operations. */ void smbfs_down(struct smbmount *smp) { if (!smp || (smp->sm_status & SM_STATUS_TIMEO)) return; vfs_event_signal(&smp->sm_mp->mnt_stat.f_fsid, VQ_NOTRESP, 0); smp->sm_status |= SM_STATUS_TIMEO; } /* * smbfs_up is called when smb_rq_simple or smb_t2_request has successful * communication with a server. It uses vfs_event_signal() to tell interested * parties the connection is OK again if the connection was having problems. */ void smbfs_up(struct smbmount *smp) { if (!smp || !(smp->sm_status & SM_STATUS_TIMEO)) return; smp->sm_status &= ~SM_STATUS_TIMEO; vfs_event_signal(&smp->sm_mp->mnt_stat.f_fsid, VQ_NOTRESP, 1); } void smbfs_dead(struct smbmount *smp) { if (!smp || (smp->sm_status & SM_STATUS_DEAD)) return; vfs_event_signal(&smp->sm_mp->mnt_stat.f_fsid, VQ_DEAD, 0); smp->sm_status |= SM_STATUS_DEAD; } static int smbfs_access(ap) struct vop_access_args /* { struct vnode *a_vp; int a_mode; struct ucred *a_cred; struct proc *a_p; } */ *ap; { struct vnode *vp = ap->a_vp; struct ucred *cred = ap->a_cred; u_int mode = ap->a_mode; struct smbmount *smp = VTOSMBFS(vp); int error = 0; SMBVDEBUG("\n"); if ((mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) { switch (vp->v_type) { case VREG: case VDIR: case VLNK: return EROFS; default: break; } } if (cred->cr_uid == 0) return 0; if (cred->cr_uid != smp->sm_args.uid) { mode >>= 3; if (!groupmember(smp->sm_args.gid, cred)) mode >>= 3; } error = (((vp->v_type == VREG) ? smp->sm_args.file_mode : smp->sm_args.dir_mode) & mode) == mode ? 0 : EACCES; return error; } /* ARGSUSED */ static int smbfs_open(ap) struct vop_open_args /* { struct vnode *a_vp; int a_mode; struct ucred *a_cred; struct proc *a_p; } */ *ap; { struct vnode *vp = ap->a_vp; struct smbnode *np = VTOSMB(vp); struct smb_cred scred; struct vattr vattr; int mode = ap->a_mode; int error, accmode; int attrcacheupdated = 0; u_int16_t old_fid; SMBVDEBUG("%s,%d\n", np->n_name, np->n_opencount); if (vp->v_type != VREG && vp->v_type != VDIR) { SMBFSERR("open eacces vtype=%d\n", vp->v_type); return EACCES; } if (vp->v_type == VDIR) { np->n_opencount++; return 0; } if (np->n_flag & NMODIFIED) { if ((error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_p, 1)) == EINTR) return error; smbfs_attr_cacheremove(np); error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p); if (error) return error; np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; } else { error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p); if (error) return error; if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_p, 1); if (error == EINTR) return error; np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; } } /* * Just do a read-only open if we're not opening for writing. * If we are opening for writing, open read/write - and, if we * already have it open read-only, close that open if the read/ * write open succeeds. */ if (np->n_opencount) { if (mode & FWRITE) { /* * We're opening read/write, and we already have * it open - do we have it open read/write? */ if ((np->n_rwstate & SMB_AM_OPENMODE) == SMB_AM_OPENRW) { /* * Yes - just bump the open count. */ np->n_opencount++; return 0; } } else { /* * We're opening read-only, and we already have * it open either read-only or read/write; * just bump the open count. */ np->n_opencount++; return 0; } } /* * Use DENYNONE to give unixy semantics of permitting * everything not forbidden by permissions. Ie denial * is up to server with clients/openers needing to use * advisory locks for further control. */ accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD; /* * If this is on a file system mounted read-only, we shouldn't * get here with FWRITE set - the layers above us should've * checked for that (e.g., by calling VOP_ACCESS, thus calling * "smbfs_access()", which rejects write access to file systems * mounted read-only), so we might be able to skip the check * for MNT_RDONLY, but we'll be paranoid for now. */ if ((mode & FWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) accmode = SMB_SM_DENYNONE|SMB_AM_OPENRW; smb_makescred(&scred, ap->a_p, ap->a_cred); old_fid = np->n_fid; error = smbfs_smb_open(np, accmode, &scred, &attrcacheupdated); if (!error) { if (np->n_opencount != 0) { /* * We already had it open (presumably because it * was open read-only and we're now opening it * read/write); close the old open. * XXX - what if the close fails? */ smbfs_smb_close(np->n_mount->sm_share, old_fid, &np->n_mtime, &scred); } np->n_opencount++; } if (error || !attrcacheupdated) { /* remove this from the attr_cache if open could not * update the existing cached entry */ smbfs_attr_cacheremove(np); } return error; } static int smbfs_closel(struct vop_close_args *ap) { struct vnode *vp = ap->a_vp; struct smbnode *np = VTOSMB(vp); struct proc *p = ap->a_p; struct smb_cred scred; int error; SMBVDEBUG("name=%s, pid=%d, c=%d\n",np->n_name, p->p_pid, np->n_opencount); smb_makescred(&scred, p, ap->a_cred); if (np->n_opencount == 0) { #ifndef APPLE SMBERROR("Negative opencount\n"); #endif return 0; } if (vp->v_type == VDIR) { if (--np->n_opencount) return 0; if (np->n_dirseq) { smbfs_findclose(np->n_dirseq, &scred); np->n_dirseq = NULL; } error = 0; } else { error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, p, 1); if (--np->n_opencount) return error; /* * XXX - if we have the file open for reading and writing, * and we're closing the last open for writing, it'd be * nice if we could open for reading and close for reading * and writing, so we give up our write access and stop * blocking other clients from doing deny-write opens. */ #ifdef APPLE /* * VOP_GETATTR removed due to ubc_invalidate panic when ubc * already torn down. VOP_GETATTR here made no sense anyway. * The smbfs_smb_close() doesn't use them and then the * smbfs_attr_cacheremove() invalidates them. Nor do * server side effects explain this, as the getattr will * often hit the cache, sending no rpcs. */ if (ubc_isinuse(vp, 1)) { np->n_opencount = 1; /* wait for inactive to close */ if (UBCINFOEXISTS(vp) && ubc_issetflags(vp, UI_WASMAPPED)) { /* set the "do not cache" bit so that inactive gets * called immediately after the last mmap reference * is gone */ ubc_uncache(vp); } } else #endif /* APPLE */ { error = smbfs_smb_close(np->n_mount->sm_share, np->n_fid, &np->n_mtime, &scred); } } if (np->n_flag & NATTRCHANGED) smbfs_attr_cacheremove(np); return error; } /* * XXX: VOP_CLOSE() usually called without lock held which is bad. Here we * do some heruistic to determine if vnode should be locked. */ static int smbfs_close(ap) struct vop_close_args /* { struct vnodeop_desc *a_desc; struct vnode *a_vp; int a_fflag; struct ucred *a_cred; struct proc *a_p; } */ *ap; { struct vnode *vp = ap->a_vp; struct proc *p = ap->a_p; int error, dolock; VI_LOCK(vp); dolock = (vp->v_flag & VXLOCK) == 0; if (dolock) vn_lock(vp, LK_EXCLUSIVE | LK_RETRY | LK_INTERLOCK, p); else VI_UNLOCK(vp); error = smbfs_closel(ap); if (dolock) VOP_UNLOCK(vp, 0, p); return error; } /* * smbfs_getattr call from vfs. */ static int smbfs_getattr(ap) struct vop_getattr_args /* { struct vnode *a_vp; struct vattr *a_vap; struct ucred *a_cred; struct proc *a_p; } */ *ap; { struct vnode *vp = ap->a_vp; struct smbnode *np; u_long vid; struct vattr *va=ap->a_vap; struct smbfattr fattr; struct smb_cred scred; int error; if (SMB_STALEVP(vp, 0)) return (EIO); vid = vp->v_id; np = VTOSMB(vp); SMBVDEBUG("%lx: '%s' %d\n", (long)vp, np->n_name, (vp->v_flag & VROOT) != 0); error = smbfs_attr_cachelookup(vp, va); if (!error) return 0; SMBVDEBUG("not in the cache\n"); smb_makescred(&scred, ap->a_p, ap->a_cred); error = smbfs_smb_lookup(np, NULL, NULL, &fattr, &scred); if (error) { SMBVDEBUG("error %d\n", error); return error; } /* * we may have lost the vnode during the lookup. we return EIO, * but if we knew whether this was a stat (vs fstat) it is arguably * better to return ENOENT (or EBADF). */ if (SMB_STALEVP(vp, vid)) return (EIO); smbfs_attr_cacheenter(vp, &fattr); smbfs_attr_cachelookup(vp, va); return 0; } static int smbfs_setattr(ap) struct vop_setattr_args /* { struct vnode *a_vp; struct vattr *a_vap; struct ucred *a_cred; struct proc *a_p; } */ *ap; { struct vnode *vp = ap->a_vp; struct smbnode *np = VTOSMB(vp); struct smbmount *smp = VTOSMBFS(vp); struct vattr *vap = ap->a_vap; struct timespec *mtime, *atime; struct smb_cred scred; struct smb_share *ssp = np->n_mount->sm_share; struct smb_vc *vcp = SSTOVC(ssp); u_quad_t tsize = 0; int isreadonly, doclose, error = 0, savefid, saverwstate; int attrcacheupdated; #ifdef APPLE off_t newround; #endif SMBVDEBUG("\n"); if (vap->va_flags != (u_long)VNOVAL) return EOPNOTSUPP; isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY); /* * Disallow write attempts if the filesystem is mounted read-only. */ if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || vap->va_mode != (mode_t)VNOVAL) && isreadonly) return EROFS; smb_makescred(&scred, ap->a_p, ap->a_cred); if (vap->va_size != (u_quad_t)VNOVAL) { switch (vp->v_type) { case VDIR: return EISDIR; case VREG: break; default: return EINVAL; }; if (isreadonly) return EROFS; doclose = 0; tsize = np->n_size; #ifdef APPLE newround = round_page_64((off_t)vap->va_size); if ((off_t)tsize > newround) { if (!ubc_invalidate(vp, newround, (size_t)(tsize - newround))) panic("smbfs_setattr: ubc_invalidate"); } #endif /* APPLE */ /* * XXX VM coherence on extends - consider delaying * this until after zero fill (smbfs_0extend) */ smbfs_setsize(vp, (off_t)vap->va_size); savefid = -1; saverwstate = np->n_rwstate; if (np->n_opencount == 0 || (np->n_rwstate & SMB_AM_OPENMODE) == SMB_AM_OPENREAD) { /* * We don't have an open FID for it, or we have * one but it's open read-only, not read/write; * we'll need a read/write FID to set the size. * * XXX - if we're using a dialect with * a "set path info" call, we could use it. */ if (np->n_opencount != 0) { /* * Save the existing read-only FID, * and put it back when we're done; * "smbfs_smb_open()" will overwrite * it. * * The vnode is locked, so that's safe. */ savefid = np->n_fid; } error = smbfs_smb_open(np, SMB_SM_DENYNONE|SMB_AM_OPENRW, &scred, &attrcacheupdated); if (error == 0) doclose = 1; } if (error == 0) error = smbfs_smb_setfsize(np, vap->va_size, &scred); #ifdef APPLE if (!error && tsize < vap->va_size) error = smbfs_0extend(vp, tsize, vap->va_size, &scred, ap->a_p, SMBWRTTIMO); #endif /* APPLE */ if (doclose) { /* * Close the new FID. */ smbfs_smb_close(ssp, np->n_fid, NULL, &scred); if (savefid > 0) { /* * Put back the saved FID, and the * saved "granted mode" flags. */ np->n_fid = savefid; np->n_rwstate = saverwstate; } } if (error) { smbfs_setsize(vp, (off_t)tsize); return error; } else { /* if success, blow away statfs cache */ smp->sm_statfstime = 0; } } mtime = atime = NULL; if (vap->va_mtime.tv_sec != VNOVAL) mtime = &vap->va_mtime; if (vap->va_atime.tv_sec != VNOVAL) atime = &vap->va_atime; if (mtime != atime) { #if 0 if (mtime == NULL) mtime = &np->n_mtime; if (atime == NULL) atime = &np->n_atime; #endif /* * If file is opened for writing, then we can use handle-based * calls. * If not, use path-based ones. */ if (np->n_opencount == 0 || (np->n_rwstate & SMB_AM_OPENMODE) == SMB_AM_OPENREAD) { if (vcp->vc_flags & SMBV_WIN95) { error = VOP_OPEN(vp, FWRITE, ap->a_cred, ap->a_p); if (!error) { /* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p); */ if (mtime) np->n_mtime = *mtime; VOP_CLOSE(vp, FWRITE, ap->a_cred, ap->a_p); } } else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) { error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); /* error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);*/ } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) { error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); } else { error = smbfs_smb_setpattr(np, NULL, 0, 0, mtime, &scred); } } else { if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) { error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) { error = smbfs_smb_setftime(np, mtime, atime, &scred); } else { /* * I have no idea how to handle this for core * level servers. The possible solution is to * update mtime when the FID is closed, as * that can be set in an SMB close operation. * * Or should we us "smbfs_smb_setpattr()"? * That uses Set File Attributes, which is * in the core protocol. */ SMBERROR("can't update times on an opened file\n"); } } } /* * Invalidate attribute cache in case if server doesn't set * required attributes. */ smbfs_attr_cacheremove(np); /* invalidate cache */ VOP_GETATTR(vp, vap, ap->a_cred, ap->a_p); np->n_mtime.tv_sec = vap->va_mtime.tv_sec; return error; } #ifdef APPLE static int smb_flushvp(struct vnode *vp, struct proc *p, struct ucred *cred, int inval) { struct smb_cred scred; /* XXX log ubc_clean errors and provide nowait option */ (void)ubc_clean(vp, inval == 1); (void)ubc_clean(vp, inval == 1); /* stalls us until pageouts complete */ smb_makescred(&scred, p, cred); return (smbfs_smb_flush(VTOSMB(vp), &scred)); } static int smb_flushrange(struct vnode *vp, struct uio *uio) { off_t soff, eoff; soff = trunc_page_64(uio->uio_offset); eoff = round_page_64(uio->uio_offset + uio->uio_resid); if (!ubc_pushdirty_range(vp, soff, (off_t)(eoff - soff))) return (EINVAL); if (!ubc_invalidate(vp, soff, (size_t)(eoff - soff))) return (EINVAL); return (0); } #endif /* APPLE */ /* * smbfs_read call. */ static int smbfs_read(ap) struct vop_read_args /* { struct vnode *a_vp; struct uio *a_uio; int a_ioflag; struct ucred *a_cred; } */ *ap; { struct vnode *vp = ap->a_vp; struct uio *uio = ap->a_uio; #ifdef APPLE off_t soff, eoff; upl_t upl; int error, remaining, xfersize; struct smbnode *np = VTOSMB(vp); struct smb_cred scred; #endif /* APPLE */ SMBVDEBUG("\n"); if (vp->v_type != VREG && vp->v_type != VDIR) return (EPERM); #ifdef APPLE /* * FreeBSD vs Darwin VFS difference; we can get VOP_READ without * preceeding VOP_OPEN via the exec path, so do it implicitly. * * XXX - when is the implied open closed? */ if (np->n_opencount == 0) { error = VOP_OPEN(vp, FREAD, ap->a_cred, uio->uio_procp); if (error) return (error); } /* * Here we push any mmap-dirtied pages. * The vnode lock is held, so we shouldn't need to lock down * all pages across the whole vop. */ error = smb_flushrange(vp, uio); if (error) return (error); smb_makescred(&scred, uio->uio_procp, ap->a_cred); error = smbfs_smb_flush(np, &scred); if (error) return (error); /* * In order to maintain some synchronisation * between memory-mapped access and reads from * a file, we build a upl covering the range * we're about to read, and once the read * completes, dump all the pages. * * Loop reading chunks small enough to be covered by a upl. */ while (!error && uio->uio_resid > 0) { remaining = uio->uio_resid; xfersize = MIN(remaining, MAXPHYS); /* create a upl for this range */ soff = trunc_page_64(uio->uio_offset); eoff = round_page_64(uio->uio_offset + xfersize); error = ubc_create_upl(vp, soff, (long)(eoff - soff), &upl, NULL, NULL); if (error) break; uio->uio_resid = xfersize; /* do the wire transaction */ error = smbfs_readvnode(vp, uio, ap->a_cred); /* dump the pages */ if (ubc_upl_abort(upl, UPL_ABORT_DUMP_PAGES)) panic("smbfs_read: ubc_upl_abort"); uio->uio_resid += remaining - xfersize; /* restore true resid */ if (uio->uio_resid == remaining) /* nothing transferred? */ break; } return (error); #else return smbfs_readvnode(vp, uio, ap->a_cred); #endif /* APPLE */ } static int smbfs_write(ap) struct vop_write_args /* { struct vnode *a_vp; struct uio *a_uio; int a_ioflag; struct ucred *a_cred; } */ *ap; { struct vnode *vp = ap->a_vp; struct smbmount *smp = VTOSMBFS(vp); struct uio *uio = ap->a_uio; #ifdef APPLE off_t soff, eoff; upl_t upl; int error, remaining, xfersize; struct smbnode *np = VTOSMB(vp); #endif /* APPLE */ int timo = SMBWRTTIMO; SMBVDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid); if (vp->v_type != VREG) return (EPERM); #ifdef APPLE /* * Potential FreeBSD vs Darwin VFS difference: we are not ensured a * VOP_OPEN, so do it implicitly. The log message is because we * anticipate only READ VOPs before OPEN. If this becomes * an expected code path then remove the "log". * * We also force an open for writing if it's not already open * for writing. * * XXX - when is the implied open closed? */ if (np->n_opencount == 0 || (np->n_rwstate & SMB_AM_OPENMODE) != SMB_AM_OPENRW) { log(LOG_NOTICE, "smbfs_write: implied open: opencount %d, rwstate 0x%x\n", np->n_opencount, np->n_rwstate); error = VOP_OPEN(vp, FWRITE, ap->a_cred, uio->uio_procp); if (error) return (error); } /* * Here we push any mmap-dirtied pages. * The vnode lock is held, so we shouldn't need to lock down * all pages across the whole vop. */ error = smb_flushrange(vp, uio); /* * Note that since our lower layers take the uio directly, * we don't copy it into these pages; we're going to * invalidate them all when we're done anyway. * * Loop writing chunks small enough to be covered by a upl. */ while (!error && uio->uio_resid > 0) { remaining = uio->uio_resid; xfersize = MIN(remaining, MAXPHYS); /* create a upl for this range */ soff = trunc_page_64(uio->uio_offset); eoff = round_page_64(uio->uio_offset + xfersize); error = ubc_create_upl(vp, soff, (long)(eoff - soff), &upl, NULL, NULL); if (error) break; uio->uio_resid = xfersize; /* do the wire transaction */ error = smbfs_writevnode(vp, uio, ap->a_cred, ap->a_ioflag, timo); timo = 0; /* dump the pages */ if (ubc_upl_abort(upl, UPL_ABORT_DUMP_PAGES)) panic("smbfs_write: ubc_upl_abort"); uio->uio_resid += remaining - xfersize; /* restore true resid */ if (uio->uio_resid == remaining) /* nothing transferred? */ break; } #else error = smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag, timo); #endif /* APPLE */ /* if success, blow away statfs cache */ if (!error) smp->sm_statfstime = 0; return (error); } /* * smbfs_create call * Create a regular file. On entry the directory to contain the file being * created is locked. We must release before we return. We must also free * the pathname buffer pointed at by cnp->cn_pnbuf, always on error, or * only if the SAVESTART bit in cn_flags is clear on success. */ static int smbfs_create(ap) struct vop_create_args /* { struct vnode *a_dvp; struct vnode **a_vpp; struct componentname *a_cnp; struct vattr *a_vap; } */ *ap; { struct vnode *dvp = ap->a_dvp; struct vattr *vap = ap->a_vap; struct vnode **vpp=ap->a_vpp; struct componentname *cnp = ap->a_cnp; struct smbnode *dnp = VTOSMB(dvp); struct smbmount *smp = VTOSMBFS(dvp); struct vnode *vp; struct vattr vattr; struct smbfattr fattr; struct smb_cred scred; const char *name = cnp->cn_nameptr; int nmlen = cnp->cn_namelen; int error; SMBVDEBUG("\n"); *vpp = NULL; if (vap->va_type != VREG) return EOPNOTSUPP; if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred, cnp->cn_proc))) return error; smb_makescred(&scred, cnp->cn_proc, cnp->cn_cred); error = smbfs_smb_create(dnp, name, nmlen, &scred); if (error) return error; error = smbfs_smb_lookup(dnp, &name, &nmlen, &fattr, &scred); if (error) return error; smbfs_attr_touchdir(dnp); error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp); if (error) goto bad; *vpp = vp; if (cnp->cn_flags & MAKEENTRY && name == cnp->cn_nameptr) { #ifdef APPLE if (cnp->cn_namelen <= NCHNAMLEN) /* X namecache limitation */ #endif cache_enter(dvp, vp, cnp); } else if (cnp->cn_flags & MAKEENTRY) { struct componentname cn = *cnp; cn.cn_nameptr = (char *)name; cn.cn_namelen = nmlen; #ifdef APPLE { int indx; char *cp; cn.cn_hash = 0; for (cp = cn.cn_nameptr, indx = 1; *cp != 0 && *cp != '/'; indx++, cp++) cn.cn_hash += (unsigned char)*cp * indx; } if (cn.cn_namelen <= NCHNAMLEN) /* X namecache limitation */ #endif cache_enter(dvp, vp, &cn); } error = 0; bad: if (name != cnp->cn_nameptr) smbfs_name_free(name); /* if success, blow away statfs cache */ if (!error) smp->sm_statfstime = 0; return error; } #ifdef APPLE static int smbfs_create0(ap) struct vop_create_args /* { struct vnode *a_dvp; struct vnode **a_vpp; struct componentname *a_cnp; struct vattr *a_vap; } */ *ap; { int error; error = smbfs_create(ap); nop_create(ap); return (error); } #endif /* APPLE */ static int smbfs_remove(ap) struct vop_remove_args /* { struct vnodeop_desc *a_desc; struct vnode * a_dvp; struct vnode * a_vp; struct componentname * a_cnp; } */ *ap; { struct vnode *vp = ap->a_vp; struct smbnode *dnp = VTOSMB(ap->a_dvp); struct componentname *cnp = ap->a_cnp; struct proc *p = cnp->cn_proc; struct smbnode *np = VTOSMB(vp); struct smbmount *smp = VTOSMBFS(vp); struct smb_cred scred; int error; #ifdef APPLE /* * Paranoia (VDIR is screened off by _unlink in system call layer) */ if (vp->v_type == VDIR) { error = EPERM; goto out; } if (UBCISVALID(vp) ? ubc_isinuse(vp, 1) : vp->v_usecount != 1) { error = EBUSY; goto out; } if (!ubc_invalidate(vp, (off_t)0, (size_t)np->n_size)) panic("smbfs_remove: ubc_invalidate"); smbfs_setsize(vp, (off_t)0); smb_makescred(&scred, p, cnp->cn_cred); if (np->n_opencount) { if (np->n_opencount > 1) log(LOG_WARNING, "smbfs_remove: n_opencount=%d\n", np->n_opencount); np->n_opencount = 0; error = smbfs_smb_close(np->n_mount->sm_share, np->n_fid, &np->n_mtime, &scred); if (error) log(LOG_WARNING, "smbfs_remove: close error=%d\n", error); } #else /* freebsd bug: as in smbfs_rename EBUSY better for open file case */ if (vp->v_type == VDIR || np->n_opencount || vp->v_usecount != 1) return EPERM; smb_makescred(&scred, p, cnp->cn_cred); #endif /* APPLE */ error = smbfs_smb_delete(np, &scred); smb_vhashrem(np, p); smbfs_attr_touchdir(dnp); cache_purge(vp); #ifdef APPLE /* XXX Q4BP: Ought above cache_purge preceed rpc as in nfs? */ out: if (error == EBUSY) SMBERROR("warning: pid %d(%.*s) unlink open file(%.*s)\n", p->p_pid, sizeof(p->p_comm), p->p_comm, np->n_nmlen, np->n_name); if (ap->a_dvp != vp) VOP_UNLOCK(vp, 0, p); /* XXX ufs calls ubc_uncache even for errors, but we follow hfs precedent */ if (!error) (void) ubc_uncache(vp); vrele(vp); vput(ap->a_dvp); #endif /* APPLE */ /* if success, blow away statfs cache */ if (!error) smp->sm_statfstime = 0; return error; } /* * smbfs_file rename call */ static int smbfs_rename(ap) struct vop_rename_args /* { struct vnode *a_fdvp; struct vnode *a_fvp; struct componentname *a_fcnp; struct vnode *a_tdvp; struct vnode *a_tvp; struct componentname *a_tcnp; } */ *ap; { struct vnode *fvp = ap->a_fvp; struct vnode *tvp = ap->a_tvp; struct vnode *fdvp = ap->a_fdvp; struct vnode *tdvp = ap->a_tdvp; struct smbmount *smp = VTOSMBFS(fvp); struct componentname *tcnp = ap->a_tcnp; struct componentname *fcnp = ap->a_fcnp; struct proc *p = tcnp->cn_proc; struct smb_cred scred; u_int16_t flags = 6; int error=0; int hiderr; struct smbnode *fnp = VTOSMB(fvp); struct smbnode *tnp = tvp ? VTOSMB(tvp) : NULL; struct smbnode *tdnp = VTOSMB(tdvp); struct smbnode *fdnp = VTOSMB(fdvp); /* Check for cross-device rename */ if ((fvp->v_mount != tdvp->v_mount) || (tvp && (fvp->v_mount != tvp->v_mount))) { error = EXDEV; goto out; #ifdef APPLE out: if (error == EBUSY) SMBERROR("warning: pid %d(%.*s) rename open file(%.*s)\n", p->p_pid, sizeof(p->p_comm), p->p_comm, fnp->n_nmlen, fnp->n_name); nop_rename(ap); return (error); #endif /* APPLE */ } /* * Since there are no hard links (from our client point of view) * fvp==tvp means the arguments are case-variants. (If they * were identical the rename syscall doesnt call us.) */ if (tvp && tvp != fvp && #ifdef APPLE (UBCISVALID(tvp) ? ubc_isinuse(tvp, 1) : tvp->v_usecount > 1)) { #else tvp->v_usecount > 1) { #endif /* APPLE */ error = EBUSY; goto out; } flags = 0x10; /* verify all writes */ if (fvp->v_type == VDIR) { flags |= 2; } else if (fvp->v_type == VREG) { flags |= 1; } else { error = EINVAL; goto out; } smb_makescred(&scred, p, tcnp->cn_cred); #ifdef notnow /* * Samba doesn't implement SMB_COM_MOVE call... */ if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) { error = smbfs_smb_move(fnp, tdnp, tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred); } else #endif { /* * vnode lock gives local atomicity for delete+rename * distributed atomicity XXX */ if (tvp && tvp != fvp) { cache_purge(tvp); error = smbfs_smb_delete(tnp, &scred); if (error) goto out; smb_vhashrem(tnp, p); } cache_purge(fvp); error = smbfs_smb_rename(fnp, tdnp, tcnp->cn_nameptr, tcnp->cn_namelen, &scred); #ifdef APPLE /* * XXX * If file is open and server *allowed* the rename we should * alter n_name (or entire node) so that reconnections * would use the correct name. */ if (error && fnp->n_opencount) { if (UBCISVALID(fvp) ? ubc_isinuse(fvp, 1) : fvp->v_usecount > 1) { error = EBUSY; goto out; } if (fnp->n_opencount > 1) /* paranoia */ log(LOG_WARNING, "smbfs_rename: n_opencount=%d!\n", fnp->n_opencount); error = smb_flushvp(fvp, p, tcnp->cn_cred, 1); /* with invalidate */ if (error) log(LOG_WARNING, "smbfs_rename: flush error=%d\n", error); fnp->n_opencount = 0; error = smbfs_smb_close(VTOSMBFS(fvp)->sm_share, fnp->n_fid, &fnp->n_mtime, &scred); if (error) log(LOG_WARNING, "smbfs_rename: close error=%d\n", error); error = smbfs_smb_rename(fnp, tdnp, tcnp->cn_nameptr, tcnp->cn_namelen, &scred); } #endif /* APPLE */ } if (!error) smb_vhashrem(fnp, p); #ifdef APPLE /* * Source Target * Dot Hidden Dot HIDE * Dot Unhidden Dot HIDE! (Puma recovery) * NoDot Hidden Dot HIDE (Win hid it) * NoDot Unhidden Dot HIDE * Dot Hidden NoDot UNHIDE * Dot Unhidden NoDot UNHIDE * NoDot Hidden NoDot HIDE! (Win hid it) * NoDot Unhidden NoDot UNHIDE */ if (!error && tcnp->cn_nameptr[0] == '.') { if ((hiderr = smbfs_smb_hideit(tdnp, tcnp->cn_nameptr, tcnp->cn_namelen, &scred))) SMBERROR("hiderr %d", hiderr); } else if (!error && tcnp->cn_nameptr[0] != '.' && fcnp->cn_nameptr[0] == '.') { if ((hiderr = smbfs_smb_unhideit(tdnp, tcnp->cn_nameptr, tcnp->cn_namelen, &scred))) SMBERROR("(un)hiderr %d", hiderr); } #endif /* APPLE */ if (fvp->v_type == VDIR) { if (tvp != NULL && tvp->v_type == VDIR) cache_purge(tdvp); cache_purge(fdvp); } #ifndef APPLE out: #endif /* APPLE */ if (error == EBUSY) SMBERROR("warning: pid %d(%.*s) rename open file(%.*s)\n", p->p_pid, sizeof(p->p_comm), p->p_comm, fnp->n_nmlen, fnp->n_name); if (tdvp == tvp) vrele(tdvp); else vput(tdvp); if (tvp) vput(tvp); vrele(fdvp); vrele(fvp); smbfs_attr_touchdir(fdnp); if (tdvp != fdvp) smbfs_attr_touchdir(tdnp); /* if success, blow away statfs cache */ if (!error) smp->sm_statfstime = 0; return error; } /* * sometime it will come true... */ static int smbfs_link(ap) struct vop_link_args /* { struct vnode *a_vp; struct vnode *a_tdvp; struct componentname *a_cnp; } */ *ap; { struct proc *p = ap->a_cnp->cn_proc; struct smbnode *np = VTOSMB(ap->a_vp); SMBERROR("warning: pid %d(%.*s) hardlink(%.*s)\n", p->p_pid, sizeof(p->p_comm), p->p_comm, np->n_nmlen, np->n_name); #ifdef APPLE return (err_link(ap)); #else return EOPNOTSUPP; #endif /* APPLE */ } /* * smbfs_symlink link create call. */ static int smbfs_symlink(ap) struct vop_symlink_args /* { struct vnode *a_dvp; struct vnode **a_vpp; struct componentname *a_cnp; struct vattr *a_vap; char *a_target; } */ *ap; { struct proc *p = ap->a_cnp->cn_proc; SMBERROR("warning: pid %d(%.*s) symlink(%.*s)\n", p->p_pid, sizeof(p->p_comm), p->p_comm, ap->a_cnp->cn_namelen, ap->a_cnp->cn_nameptr); #ifdef APPLE return (err_symlink(ap)); #else return EOPNOTSUPP; #endif /* APPLE */ } static int smbfs_mknod(ap) struct vop_mknod_args /* { struct vnode *a_dvp; struct vnode **a_vpp; struct componentname *a_cnp; struct vattr *a_vap; } */ *ap; { struct proc *p = ap->a_cnp->cn_proc; SMBERROR("warning: pid %d(%.*s) mknod(%.*s)\n", p->p_pid, sizeof(p->p_comm), p->p_comm, ap->a_cnp->cn_namelen, ap->a_cnp->cn_nameptr); #ifdef APPLE return (err_mknod(ap)); #else return EOPNOTSUPP; #endif /* APPLE */ } static int smbfs_mkdir(ap) struct vop_mkdir_args /* { struct vnode *a_dvp; struct vnode **a_vpp; struct componentname *a_cnp; struct vattr *a_vap; } */ *ap; { struct vnode *dvp = ap->a_dvp; /* struct vattr *vap = ap->a_vap;*/ struct vnode *vp; struct componentname *cnp = ap->a_cnp; struct smbnode *dnp = VTOSMB(dvp); struct smbmount *smp = VTOSMBFS(dvp); struct vattr vattr; struct smb_cred scred; struct smbfattr fattr; const char *name = cnp->cn_nameptr; int len = cnp->cn_namelen; int error, hiderr; if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred, cnp->cn_proc))) { return error; } if (name[0] == '.' && (len == 1 || (len == 2 && name[1] == '.'))) return EEXIST; smb_makescred(&scred, cnp->cn_proc, cnp->cn_cred); error = smbfs_smb_mkdir(dnp, name, len, &scred); if (error) return error; error = smbfs_smb_lookup(dnp, &name, &len, &fattr, &scred); if (error) return error; smbfs_attr_touchdir(dnp); error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp); if (error) goto bad; #ifdef APPLE if (name[0] == '.') if ((hiderr = smbfs_smb_hideit(VTOSMB(vp), NULL, 0, &scred))) SMBERROR("hiderr %d", hiderr); #endif *ap->a_vpp = vp; bad: if (name != cnp->cn_nameptr) smbfs_name_free(name); /* if success, blow away statfs cache */ smp->sm_statfstime = 0; return (error); } #ifdef APPLE static int smbfs_mkdir0(ap) struct vop_mkdir_args /* { struct vnode *a_dvp; struct vnode **a_vpp; struct componentname *a_cnp; struct vattr *a_vap; } */ *ap; { int error; error = smbfs_mkdir(ap); nop_mkdir(ap); return (error); } #endif /* APPLE */ /* * smbfs_remove directory call */ static int smbfs_rmdir(ap) struct vop_rmdir_args /* { struct vnode *a_dvp; struct vnode *a_vp; struct componentname *a_cnp; } */ *ap; { struct vnode *vp = ap->a_vp; struct vnode *dvp = ap->a_dvp; struct componentname *cnp = ap->a_cnp; struct smbmount *smp = VTOSMBFS(vp); struct smbnode *dnp = VTOSMB(dvp); struct smbnode *np = VTOSMB(vp); struct smb_cred scred; int error; if (dvp == vp) #ifdef APPLE /* XXX other OSX fs test fs nodes here, not vnodes. Why? */ { error = EINVAL; vrele(dvp); goto bad; } #else return EINVAL; #endif /* APPLE */ smb_makescred(&scred, cnp->cn_proc, cnp->cn_cred); error = smbfs_smb_rmdir(np, &scred); #ifdef APPLE if ((ap->a_cnp->cn_flags & (HASBUF | SAVESTART)) == HASBUF) { FREE_ZONE(ap->a_cnp->cn_pnbuf, ap->a_cnp->cn_pnlen, M_NAMEI); ap->a_cnp->cn_flags &= ~HASBUF; } #endif /* APPLE */ dnp->n_flag |= NMODIFIED; smbfs_attr_touchdir(dnp); /* XXX Q4BP: nfs purges dvp. Why was this commented out? */ /* cache_purge(dvp); */ cache_purge(vp); smb_vhashrem(np, cnp->cn_proc); #ifdef APPLE vput(dvp); bad: vput(vp); #endif /* APPLE */ /* if success, blow away statfs cache */ if (!error) smp->sm_statfstime = 0; return error; } /* * smbfs_readdir call */ static int smbfs_readdir(ap) struct vop_readdir_args /* { struct vnode *a_vp; struct uio *a_uio; struct ucred *a_cred; int *a_eofflag; u_long *a_cookies; int a_ncookies; } */ *ap; { struct vnode *vp = ap->a_vp; struct uio *uio = ap->a_uio; int error; if (vp->v_type != VDIR) return (EPERM); #ifdef notnow if (ap->a_ncookies) { printf("smbfs_readdir: no support for cookies now..."); return (EOPNOTSUPP); } #endif error = smbfs_readvnode(vp, uio, ap->a_cred); return error; } /* ARGSUSED */ static int smbfs_fsync(ap) struct vop_fsync_args /* { struct vnodeop_desc *a_desc; struct vnode * a_vp; struct ucred * a_cred; int a_waitfor; struct proc * a_p; } */ *ap; { #ifdef APPLE int error; error = smb_flushvp(ap->a_vp, ap->a_p, ap->a_cred, 0); if (!error) VTOSMBFS(ap->a_vp)->sm_statfstime = 0; nop_fsync(ap); return (error); #else /* return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_p, 1));*/ return (0); #endif /* APPLE */ } static int smbfs_print (ap) struct vop_print_args /* { struct vnode *a_vp; } */ *ap; { struct vnode *vp = ap->a_vp; struct smbnode *np = VTOSMB(vp); if (np == NULL) { printf("no smbnode data\n"); return (0); } printf("tag VT_SMBFS, name = %s, parent = %p, opencount = %d", np->n_name, np->n_parent ? SMBTOV(np->n_parent) : NULL, np->n_opencount); lockmgr_printinfo(&np->n_lock); printf("\n"); return (0); } static int smbfs_pathconf (ap) struct vop_pathconf_args /* { struct vnode *vp; int name; register_t *retval; } */ *ap; { struct smbmount *smp = VFSTOSMBFS(VTOVFS(ap->a_vp)); struct smb_vc *vcp = SSTOVC(smp->sm_share); register_t *retval = ap->a_retval; int error = 0; switch (ap->a_name) { case _PC_LINK_MAX: *retval = 0; break; case _PC_NAME_MAX: *retval = (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) ? 255 : 12; break; case _PC_PATH_MAX: *retval = 800; /* XXX: a correct one ? */ break; default: error = EINVAL; } return error; } static int smbfs_strategy (ap) struct vop_strategy_args /* { struct buf *a_bp } */ *ap; { struct buf *bp=ap->a_bp; struct ucred *cr; struct proc *p; int error = 0; SMBVDEBUG("\n"); if (bp->b_flags & B_PHYS) panic("smbfs physio"); if (bp->b_flags & B_ASYNC) p = (struct proc *)0; else p = curproc; /* XXX */ if (bp->b_flags & B_READ) cr = bp->b_rcred; else cr = bp->b_wcred; if ((bp->b_flags & B_ASYNC) == 0 ) error = smbfs_doio(bp, cr, p); return error; } static int smbfs_bmap(ap) struct vop_bmap_args /* { struct vnode *a_vp; daddr_t a_bn; struct vnode **a_vpp; daddr_t *a_bnp; int *a_runp; int *a_runb; } */ *ap; { struct vnode *vp = ap->a_vp; if (ap->a_vpp != NULL) *ap->a_vpp = vp; if (ap->a_bnp != NULL) #ifdef APPLE *ap->a_bnp = ap->a_bn * btodb(vp->v_mount->mnt_stat.f_iosize, DEV_BSIZE); #else *ap->a_bnp = ap->a_bn * btodb(vp->v_mount->mnt_stat.f_iosize); #endif /* APPLE */ if (ap->a_runp != NULL) *ap->a_runp = 0; #ifndef APPLE if (ap->a_runb != NULL) *ap->a_runb = 0; #endif /* APPLE */ return (0); } int smbfs_ioctl(ap) struct vop_ioctl_args /* { struct vnode *a_vp; u_long a_command; caddr_t a_data; int fflag; struct ucred *cred; struct proc *p; } */ *ap; { #pragma unused(ap) return EINVAL; } #ifndef APPLE static char smbfs_atl[] = "rhsvda"; static int smbfs_getextattr(struct vop_getextattr_args *ap) /* { IN struct vnode *a_vp; IN char *a_name; INOUT struct uio *a_uio; IN struct ucred *a_cred; IN struct proc *a_p; }; */ { struct vnode *vp = ap->a_vp; struct proc *p = ap->a_p; struct ucred *cred = ap->a_cred; struct uio *uio = ap->a_uio; const char *name = ap->a_name; struct smbnode *np = VTOSMB(vp); struct vattr vattr; char buf[10]; int i, attr, error; error = VOP_ACCESS(vp, VREAD, cred, p); if (error) return error; error = VOP_GETATTR(vp, &vattr, cred, p); if (error) return error; if (strcmp(name, "dosattr") == 0) { attr = np->n_dosattr; for (i = 0; i < 6; i++, attr >>= 1) buf[i] = (attr & 1) ? smbfs_atl[i] : '-'; buf[i] = 0; error = uiomove(buf, i, uio); } else error = EINVAL; return error; } #endif /* APPLE */ /* SMB locks do not map to POSIX.1 advisory locks in several ways: * 1 - SMB provides no way to find an existing lock on the server. * So, the F_GETLK operation can only report locks created by processes * on this client. * 2 - SMB locks cannot overlap an existing locked region of a file. So, * F_SETLK/F_SETLKW operations that establish locks cannot extend an * existing lock. * 3 - When unlocking a SMB locked region, the region to unlock must correspond * exactly to an existing locked region. So, F_SETLK F_UNLCK operations * cannot split an existing lock or unlock more than was locked (this is * especially important because file files are closed, we recieve a request * to unlock the entire file: l_whence and l_start point to the beginning * of the file, and l_len is zero). * The result... SMB cannot support POSIX.1 advisory locks. It can however * support BSD flock() locks, so that's what this implementation will allow. */ int smbfs_advlock(ap) struct vop_advlock_args /* { struct vnode *a_vp; caddr_t a_id; int a_op; struct flock *a_fl; int a_flags; } */ *ap; { struct vnode *vp = ap->a_vp; caddr_t id = ap->a_id; int operation = ap->a_op; struct flock *fl = ap->a_fl; int flags = ap->a_flags; struct smbmount *smp = VFSTOSMBFS(vp->v_mount); struct smb_share *ssp = smp->sm_share; struct smbnode *np = VTOSMB(vp); struct proc *p = curproc; struct smb_cred scred; off_t start, end; u_int64_t len; struct smbfs_lockf *lock; int error; /* Since the pid passed to the SMB server is only 16 bits and a_id * is 32 bits, and since we are negotiating locks between local processes * with the code in smbfs_lockf.c, just pass a 1 for our pid to the server. */ caddr_t smbid = (caddr_t)1; int largelock = (SSTOVC(ssp)->vc_sopt.sv_caps & SMB_CAP_LARGE_FILES) != 0; u_int32_t timeout; /* Only regular files can have locks */ if (vp->v_type != VREG) return (EISDIR); /* No support for F_POSIX style locks */ if (flags & F_POSIX) return (err_advlock(ap)); /* * Avoid the common case of unlocking when smbnode has no locks. */ if (np->smb_lockf == (struct smbfs_lockf *)0) { if (operation != F_SETLK) { fl->l_type = F_UNLCK; return (0); } } /* * Convert the flock structure into a start, end, and len. */ start = 0; switch (fl->l_whence) { case SEEK_SET: case SEEK_CUR: /* * Caller is responsible for adding any necessary offset * when SEEK_CUR is used. */ start = fl->l_start; break; case SEEK_END: start = np->n_size + fl->l_start; break; default: return (EINVAL); } if (start < 0) return (EINVAL); if (!largelock && (start & 0xffffffff00000000LL)) return (EINVAL); if (fl->l_len == 0) { /* lock from start to EOF */ end = -1; if (!largelock) /* maximum file size 2^32 - 1 bytes */ len = 0x00000000ffffffffULL - start; else /* maximum file size 2^64 - 1 bytes */ len = 0xffffffffffffffffULL - start; } else { /* lock fl->l_len bytes from start */ end = start + fl->l_len - 1; len = fl->l_len; } /* F_FLOCK style locks only use F_SETLK and F_UNLCK, * and always lock the entire file. */ if ((operation != F_SETLK && operation != F_UNLCK) || start != 0 || end != -1) { return (EINVAL); } /* * Create the lockf structure */ MALLOC(lock, struct smbfs_lockf *, sizeof *lock, M_LOCKF, M_WAITOK); lock->lf_start = start; lock->lf_end = end; lock->lf_id = id; lock->lf_smbnode = np; lock->lf_type = fl->l_type; lock->lf_next = (struct smbfs_lockf *)0; TAILQ_INIT(&lock->lf_blkhd); lock->lf_flags = flags; smb_makescred(&scred, p, p ? p->p_ucred : NULL); timeout = (flags & F_WAIT) ? -1 : 0; /* * Do the requested operation. */ switch(operation) { case F_SETLK: /* get local lock */ error = smbfs_setlock(lock); if (!error) { /* get remote lock */ error = smbfs_smb_lock(np, SMB_LOCK_EXCL, smbid, start, len, largelock, &scred, timeout); if (error) { /* remote lock failed */ /* Create another lockf structure for the clear */ MALLOC(lock, struct smbfs_lockf *, sizeof *lock, M_LOCKF, M_WAITOK); lock->lf_start = start; lock->lf_end = end; lock->lf_id = id; lock->lf_smbnode = np; lock->lf_type = F_UNLCK; lock->lf_next = (struct smbfs_lockf *)0; TAILQ_INIT(&lock->lf_blkhd); lock->lf_flags = flags; /* clear local lock (this will always be successful) */ (void) smbfs_clearlock(lock); FREE(lock, M_LOCKF); } } break; case F_UNLCK: /* clear local lock (this will always be successful) */ error = smbfs_clearlock(lock); FREE(lock, M_LOCKF); /* clear remote lock */ error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, smbid, start, len, largelock, &scred, timeout); break; case F_GETLK: error = smbfs_getlock(lock, fl); FREE(lock, M_LOCKF); break; default: error = EINVAL; _FREE(lock, M_LOCKF); break; } if (error == EDEADLK && !(flags & F_WAIT)) error = EAGAIN; return (error); } static int smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop) { const char *cp, *endp; int error; /* Check name only if CREATE, DELETE, or RENAME */ if (nameiop == LOOKUP) return 0; /* * Normally, we'd return EINVAL when the name is syntactically invalid, * but ENAMETOOLONG makes it clear that the name is the problem (and * allows Carbon to return a more meaningful error). */ error = ENAMETOOLONG; /* * Note: This code does not prevent the smb file system client * from creating filenames which are difficult to use with * other clients. For example, you can create " foo " or * "foo..." which cannot be moved, renamed, or deleted by some * other clients. */ if (!nmlen) return error; if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) { /* * Name should conform short 8.3 format */ /* Look for optional period */ cp = index(name, '.'); if (cp != NULL) { /* * If there's a period, then: * 1 - the main part of the name must be 1 to 8 chars long * 2 - the extension must be 1 to 3 chars long * 3 - there cannot be more than one period * On a DOS volume, a trailing period in a name is ignored, * so we don't want to create "foo." and confuse programs * when the file actually created is "foo" */ if ((cp == name) || /* no name chars */ (cp - name > 8) || /* name is too long */ ((nmlen - ((long)(cp - name) + 1)) > 3) || /* extension is too long */ (nmlen == ((long)(cp - name) + 1)) || /* no extension chars */ (index(cp + 1, '.') != NULL)) { /* multiple periods */ return error; } } else { /* * There is no period, so main part of the name * must be no longer than 8 chars. */ if (nmlen > 8) return error; } /* check for illegal characters */ for (cp = name, endp = name + nmlen; cp < endp; ++cp) { /* * check for other 8.3 illegal characters, wildcards, * and separators. * * According to the FAT32 File System spec, the following * characters are illegal in 8.3 file names: Values less than 0x20, * and the values 0x22, 0x2A, 0x2B, 0x2C, 0x2E, 0x2F, 0x3A, 0x3B, * 0x3C, 0x3D, 0x3E, 0x3F, 0x5B, 0x5C, 0x5D, and 0x7C. * The various SMB specs say the same thing with the additional * illegal character 0x20 -- control characters (0x00...0x1f) * are not mentioned. So, we'll add the space character and * won't filter out control characters unless we find they cause * interoperability problems. */ switch (*cp) { case 0x20: /* space */ case 0x22: /* " */ case 0x2A: /* * */ case 0x2B: /* + */ case 0x2C: /* , */ /* 0x2E (period) was handled above */ case 0x2F: /* / */ case 0x3A: /* : */ case 0x3B: /* ; */ case 0x3C: /* < */ case 0x3D: /* = */ case 0x3E: /* > */ case 0x3F: /* ? */ case 0x5B: /* [ */ case 0x5C: /* \ */ case 0x5D: /* ] */ case 0x7C: /* | */ /* illegal character found */ return error; break; default: break; } } } else { /* * Long name format */ /* make sure the name isn't too long */ if (nmlen > 255) return error; /* check for illegal characters */ for (cp = name, endp = name + nmlen; cp < endp; ++cp) { /* * The set of illegal characters in long names is the same as * 8.3 except the characters 0x20, 0x2b, 0x2c, 0x3b, 0x3d, 0x5b, * and 0x5d are now legal, and the restrictions on periods was * removed. */ switch (*cp) { case 0x22: /* " */ case 0x2A: /* * */ case 0x2F: /* / */ case 0x3A: /* : */ case 0x3C: /* < */ case 0x3E: /* > */ case 0x3F: /* ? */ case 0x5C: /* \ */ case 0x7C: /* | */ /* illegal character found */ return error; break; default: break; } } } return 0; } #ifndef PDIRUNLOCK #define PDIRUNLOCK 0 #endif /* * Things go even weird without fixed inode numbers... */ int smbfs_lookup(ap) struct vop_lookup_args /* { struct vnodeop_desc *a_desc; struct vnode *a_dvp; struct vnode **a_vpp; struct componentname *a_cnp; } */ *ap; { struct componentname *cnp = ap->a_cnp; struct proc *p = cnp->cn_proc; struct vnode *dvp = ap->a_dvp; struct vnode **vpp = ap->a_vpp; struct vnode *vp; struct smbmount *smp; struct mount *mp = dvp->v_mount; struct smbnode *dnp; struct smbfattr fattr, *fap; struct smb_cred scred; const char *name = cnp->cn_nameptr; int flags = cnp->cn_flags; int nameiop = cnp->cn_nameiop; int nmlen = cnp->cn_namelen; int lockparent, wantparent, error, islastcn, isdot; SMBVDEBUG("\n"); cnp->cn_flags &= ~PDIRUNLOCK; if (dvp->v_type != VDIR) return ENOTDIR; if ((flags & ISDOTDOT) && (dvp->v_flag & VROOT)) { SMBFSERR("invalid '..'\n"); return EIO; } #ifdef SMB_VNODE_DEBUG { char *cp, c; cp = name + nmlen; c = *cp; *cp = 0; SMBVDEBUG("%d '%s' in '%s' id=d\n", nameiop, name, VTOSMB(dvp)->n_name); *cp = c; } #endif islastcn = flags & ISLASTCN; if (islastcn && (mp->mnt_flag & MNT_RDONLY) && (nameiop != LOOKUP)) return EROFS; if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, p)) != 0) return error; lockparent = flags & LOCKPARENT; wantparent = flags & (LOCKPARENT|WANTPARENT); smp = VFSTOSMBFS(mp); dnp = VTOSMB(dvp); isdot = (nmlen == 1 && name[0] == '.'); error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop); if (error) SMBERROR("warning: pid %d(%.*s) bad filename(%.*s)\n", p->p_pid, sizeof(p->p_comm), p->p_comm, nmlen, name); if (error) return ENOENT; /* XXX use "error" as is? */ error = cache_lookup(dvp, vpp, cnp); SMBVDEBUG("cache_lookup returned %d\n", error); if (error > 0) return error; if (error) { /* name was found */ struct vattr vattr; u_long vpid; vp = *vpp; vpid = vp->v_id; if (dvp == vp) { /* lookup on current */ vref(vp); error = 0; SMBVDEBUG("cached '.'\n"); } else if (flags & ISDOTDOT) { VOP_UNLOCK(dvp, 0, p); /* unlock parent */ cnp->cn_flags |= PDIRUNLOCK; error = vget(vp, LK_EXCLUSIVE, p); if (!error && lockparent && islastcn) { error = vn_lock(dvp, LK_EXCLUSIVE, p); if (error == 0) cnp->cn_flags &= ~PDIRUNLOCK; } } else { error = vget(vp, LK_EXCLUSIVE, p); if (!lockparent || error || !islastcn) { VOP_UNLOCK(dvp, 0, p); cnp->cn_flags |= PDIRUNLOCK; } } if (!error) { if (vpid == vp->v_id) { if (!VOP_GETATTR(vp, &vattr, cnp->cn_cred, p) /* && vattr.va_ctime.tv_sec == VTOSMB(vp)->n_ctime*/) { if (nameiop != LOOKUP && islastcn) cnp->cn_flags |= SAVENAME; SMBVDEBUG("use cached vnode\n"); return (0); } cache_purge(vp); } vput(vp); if (lockparent && dvp != vp && islastcn) VOP_UNLOCK(dvp, 0, p); } error = vn_lock(dvp, LK_EXCLUSIVE, p); *vpp = NULLVP; if (error) { cnp->cn_flags |= PDIRUNLOCK; return (error); } cnp->cn_flags &= ~PDIRUNLOCK; } /* * entry is not in the cache or has been expired */ error = 0; *vpp = NULLVP; smb_makescred(&scred, p, cnp->cn_cred); fap = &fattr; if (flags & ISDOTDOT) { error = smbfs_smb_lookup(dnp->n_parent, NULL, NULL, fap, &scred); SMBVDEBUG("result of dotdot lookup: %d\n", error); } else { fap = &fattr; /* this can allocate a new "name" so use "out" from here on */ error = smbfs_smb_lookup(dnp, &name, &nmlen, fap, &scred); /* if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.')*/ SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error); } if (error && error != ENOENT) goto out; if (error) { /* entry not found */ /* * Handle RENAME or CREATE case... */ if ((nameiop == CREATE || nameiop == RENAME) && wantparent && islastcn) { cnp->cn_flags |= SAVENAME; if (!lockparent) { VOP_UNLOCK(dvp, 0, p); cnp->cn_flags |= PDIRUNLOCK; } error = EJUSTRETURN; goto out; } error = ENOENT; goto out; }/* else { SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum); }*/ /* * handle DELETE case ... */ if (nameiop == DELETE && islastcn) { /* delete last component */ error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, p); if (error) goto out; if (isdot) { VREF(dvp); *vpp = dvp; goto out; } error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); if (error) goto out; *vpp = vp; #ifndef APPLE cnp->cn_flags |= SAVENAME; #endif if (!lockparent) { VOP_UNLOCK(dvp, 0, p); cnp->cn_flags |= PDIRUNLOCK; } goto out; } if (nameiop == RENAME && islastcn && wantparent) { error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, p); if (error) goto out; if (isdot) { error = EISDIR; goto out; } error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); if (error) goto out; *vpp = vp; cnp->cn_flags |= SAVENAME; if (!lockparent) { VOP_UNLOCK(dvp, 0, p); cnp->cn_flags |= PDIRUNLOCK; } goto out; } if (flags & ISDOTDOT) { VOP_UNLOCK(dvp, 0, p); error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp); if (error) { vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY, p); goto out; } if (lockparent && islastcn) { error = vn_lock(dvp, LK_EXCLUSIVE, p); if (error) { cnp->cn_flags |= PDIRUNLOCK; vput(vp); goto out; } } *vpp = vp; } else if (isdot) { vref(dvp); *vpp = dvp; } else { error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); if (error) goto out; *vpp = vp; SMBVDEBUG("lookup: getnewvp!\n"); if (!lockparent || !islastcn) { VOP_UNLOCK(dvp, 0, p); cnp->cn_flags |= PDIRUNLOCK; } } if ((cnp->cn_flags & MAKEENTRY)/* && !islastcn*/) { struct componentname cn = *cnp; /* VTOSMB(*vpp)->n_ctime = VTOSMB(*vpp)->n_vattr.va_ctime.tv_sec;*/ cn.cn_nameptr = (char *)name; cn.cn_namelen = nmlen; #ifdef APPLE { int indx; char *cp; cn.cn_hash = 0; for (cp = cn.cn_nameptr, indx = 1; *cp != 0 && *cp != '/'; indx++, cp++) cn.cn_hash += (unsigned char)*cp * indx; } if (cn.cn_namelen <= NCHNAMLEN) /* X namecache limitation */ #endif cache_enter(dvp, *vpp, &cn); } error = 0; out: if (name != cnp->cn_nameptr) smbfs_name_free(name); return error; } #ifdef APPLE /* * getattrlist -- Return attributes about files, directories, and volumes. * This is a minimal implementation that only returns volume capabilities * so clients (like Carbon) can tell which interfaces and features are * supported by the volume. * * # * #% getattrlist vp = = = * # * vop_getattrlist { * IN struct vnode *vp; * IN struct attrlist *alist; * INOUT struct uio *uio; * IN struct ucred *cred; * IN struct proc *p; * }; */ static int smbfs_getattrlist(ap) struct vop_getattrlist_args /* { struct vnode *a_vp; struct attrlist *a_alist struct uio *a_uio; struct ucred *a_cred; struct proc *a_p; } */ *ap; { struct vnode *vp = ap->a_vp; struct attrlist *alist = ap->a_alist; size_t attrbufsize; /* Actual buffer size */ int error; struct { u_long buffer_size; vol_capabilities_attr_t capabilities; } results; /* * Reject requests that have an invalid bitmap count (indicating * a change in the headers that this code isn't prepared * to handle). * * NOTE: we don't use ATTR_BIT_MAP_COUNT, because that could * change in the header without this code changing. */ if (alist->bitmapcount != 5) return EINVAL; /* * Reject requests that ask for non-existent attributes. */ if (((alist->commonattr & ~ATTR_CMN_VALIDMASK) != 0) || ((alist->volattr & ~ATTR_VOL_VALIDMASK) != 0) || ((alist->dirattr & ~ATTR_DIR_VALIDMASK) != 0) || ((alist->fileattr & ~ATTR_FILE_VALIDMASK) != 0) || ((alist->forkattr & ~ATTR_FORK_VALIDMASK) != 0)) return EINVAL; /* * Requesting volume information requires setting the * ATTR_VOL_INFO bit. Also, volume info requests are * mutually exclusive with all other info requests. */ if ((alist->volattr != 0) && (((alist->volattr & ATTR_VOL_INFO) == 0) || (alist->dirattr != 0) || (alist->fileattr != 0))) return EINVAL; /* * Reject requests that ask for anything other than volume * capabilities. We return EOPNOTSUPP for this, as Carbon * expects to get that if requests for ATTR_CMN_ values * aren't supported by the file system. */ if ((alist->commonattr != 0) || (alist->volattr != (ATTR_VOL_INFO | ATTR_VOL_CAPABILITIES)) || (alist->dirattr != 0) || (alist->fileattr != 0) || (alist->forkattr != 0)) { return EOPNOTSUPP; } /* * Volume requests, including volume capabilities, requires using * the volume's root vnode. Since we only handle volume requests, * this is always required. */ if ((vp->v_flag & VROOT) == 0) return EINVAL; /* * A general implementation would calculate the maximum size of * all requested attributes, allocate a buffer to hold them, * and then pack them all in bitmap order. Since we support * just one attribute, this trivially uses a local structure. */ attrbufsize = MIN(ap->a_uio->uio_resid, (int)sizeof results); results.buffer_size = attrbufsize; /* The capabilities[] array defines what this volume supports. */ results.capabilities.capabilities[VOL_CAPABILITIES_FORMAT] = VOL_CAP_FMT_NO_ROOT_TIMES | VOL_CAP_FMT_FAST_STATFS; results.capabilities.capabilities[VOL_CAPABILITIES_INTERFACES] = VOL_CAP_INT_FLOCK; results.capabilities.capabilities[VOL_CAPABILITIES_RESERVED1] = 0; results.capabilities.capabilities[VOL_CAPABILITIES_RESERVED2] = 0; /* * The valid[] array defines which bits this code understands * the meaning of (whether the volume has that capability or not). * Any zero bits here means "I don't know what you're asking about" * and the caller cannot tell whether that capability is * present or not. */ results.capabilities.valid[VOL_CAPABILITIES_FORMAT] = VOL_CAP_FMT_PERSISTENTOBJECTIDS | VOL_CAP_FMT_SYMBOLICLINKS | VOL_CAP_FMT_HARDLINKS | VOL_CAP_FMT_JOURNAL | VOL_CAP_FMT_JOURNAL_ACTIVE | VOL_CAP_FMT_NO_ROOT_TIMES | VOL_CAP_FMT_SPARSE_FILES | VOL_CAP_FMT_ZERO_RUNS | /* While the SMB file system is case sensitive and case preserving, * not all SMB/CIFS servers are case sensitive and case preserving. * That's because the volume used for storage on a SMB/CIFS server * may not be case sensitive or case preserving. So, rather than * providing a wrong yes or no answer for VOL_CAP_FMT_CASE_SENSITIVE * and VOL_CAP_FMT_CASE_PRESERVING, we'll deny knowledge of those * volume attributes. */ #if 0 VOL_CAP_FMT_CASE_SENSITIVE | VOL_CAP_FMT_CASE_PRESERVING | #endif VOL_CAP_FMT_FAST_STATFS; results.capabilities.valid[VOL_CAPABILITIES_INTERFACES] = VOL_CAP_INT_SEARCHFS | VOL_CAP_INT_ATTRLIST | VOL_CAP_INT_NFSEXPORT | VOL_CAP_INT_READDIRATTR | VOL_CAP_INT_EXCHANGEDATA | VOL_CAP_INT_COPYFILE | VOL_CAP_INT_ALLOCATE | VOL_CAP_INT_VOL_RENAME | VOL_CAP_INT_ADVLOCK | VOL_CAP_INT_FLOCK; results.capabilities.valid[VOL_CAPABILITIES_RESERVED1] = 0; results.capabilities.valid[VOL_CAPABILITIES_RESERVED2] = 0; /* Copy the results to the caller. */ error = uiomove((caddr_t) &results, attrbufsize, ap->a_uio); return error; } /* offtoblk converts a file offset to a logical block number */ static int smbfs_offtoblk(ap) struct vop_offtoblk_args /* { struct vnode *a_vp; off_t a_offset; daddr_t *a_lblkno; } */ *ap; { *ap->a_lblkno = ap->a_offset / PAGE_SIZE_64; return(0); } /* blktooff converts a logical block number to a file offset */ static int smbfs_blktooff(ap) struct vop_blktooff_args /* { struct vnode *a_vp; daddr_t a_lblkno; off_t *a_offset; } */ *ap; { *ap->a_offset = (off_t)ap->a_lblkno * PAGE_SIZE_64; return(0); } static int smbfs_pagein(ap) struct vop_pagein_args /* { struct vnode * a_vp, upl_t a_pl, vm_offset_t a_pl_offset, off_t a_f_offset, size_t a_size, struct ucred * a_cred, int a_flags } */ *ap; { struct vnode *vp; upl_t pl; size_t size; off_t f_offset; vm_offset_t pl_offset, ioaddr; struct proc *p; int error, nocommit; struct smbnode *np; struct smbmount *smp; struct ucred *cred; struct smb_cred scred; struct uio uio; struct iovec iov; kern_return_t kret; f_offset = ap->a_f_offset; size = ap->a_size; pl = ap->a_pl; pl_offset = ap->a_pl_offset; vp = ap->a_vp; if (UBCINVALID(vp)) panic("smbfs_pagein: ubc invalid vp=0x%x", vp); if (UBCINFOMISSING(vp)) panic("smbfs_pagein: No mapping: vp=0x%x", vp); nocommit = ap->a_flags & UPL_NOCOMMIT; np = VTOSMB(vp); if (size <= 0 || f_offset < 0 || f_offset >= (off_t)np->n_size || f_offset & PAGE_MASK_64 || size & PAGE_MASK) { error = EINVAL; goto exit; } kret = ubc_upl_map(pl, &ioaddr); if (kret != KERN_SUCCESS) panic("smbfs_pagein: ubc_upl_map %d!", kret); cred = ubc_getcred(vp); if (cred == NOCRED) cred = ap->a_cred; p = current_proc(); /* * Potential FreeBSD vs Darwin VFS difference: we are not ensured a * VOP_OPEN, so do it implicitly. The log message is because we * anticipate only READ VOPs before OPEN. If this becomes * an expected code path then remove the "log". * * XXX - when is the implied open closed? */ if (np->n_opencount == 0) { log(LOG_NOTICE, "smbfs_pagein: implied open\n"); error = VOP_OPEN(vp, FREAD, cred, p); if (error) goto unmapexit; } smb_makescred(&scred, p, cred); uio.uio_iov = &iov; uio.uio_iovcnt = 1; uio.uio_offset = f_offset; uio.uio_segflg = UIO_SYSSPACE; uio.uio_rw = UIO_READ; uio.uio_procp = p; if (f_offset + size > (off_t)np->n_size) { /* stop at EOF */ size -= PAGE_SIZE; size += np->n_size & PAGE_MASK_64; } uio.uio_resid = size; iov.iov_len = uio.uio_resid; iov.iov_base = (caddr_t)(ioaddr + pl_offset); smp = VFSTOSMBFS(vp->v_mount); (void) smbfs_smb_flush(np, &scred); error = smb_read(smp->sm_share, np->n_fid, &uio, &scred); if (!error && uio.uio_resid) error = EFAULT; if (!error && size != ap->a_size) bzero((caddr_t)(ioaddr + pl_offset) + size, ap->a_size - size); unmapexit: kret = ubc_upl_unmap(pl); if (kret != KERN_SUCCESS) panic("smbfs_pagein: ubc_upl_unmap %d", kret); exit: if (error) log(LOG_WARNING, "smbfs_pagein: read error=%d\n", error); if (nocommit) return (error); if (error) { (void)ubc_upl_abort_range(pl, pl_offset, ap->a_size, UPL_ABORT_ERROR | UPL_ABORT_FREE_ON_EMPTY); } else (void)ubc_upl_commit_range(pl, pl_offset, ap->a_size, UPL_COMMIT_CLEAR_DIRTY | UPL_COMMIT_FREE_ON_EMPTY); SMBVDEBUG("paged read done: %d\n", error); return (error); } static int smbfs_pageout(ap) struct vop_pageout_args /* { struct vnode *a_vp, upl_t a_pl, vm_offset_t a_pl_offset, off_t a_f_offset, size_t a_size, struct ucred *a_cred, int a_flags } */ *ap; { struct vnode *vp; upl_t pl; size_t size; off_t f_offset; vm_offset_t pl_offset, ioaddr; struct proc *p; int error, nocommit; struct smbnode *np; struct smbmount *smp; struct ucred *cred; struct smb_cred scred; struct uio uio; struct iovec iov; kern_return_t kret; f_offset = ap->a_f_offset; size = ap->a_size; pl = ap->a_pl; pl_offset = ap->a_pl_offset; vp = ap->a_vp; smp = VFSTOSMBFS(vp->v_mount); if (UBCINVALID(vp)) panic("smbfs_pageout: ubc invalid vp=0x%x", vp); if (UBCINFOMISSING(vp)) panic("smbfs_pageout: No mapping: vp=0x%x", vp); nocommit = ap->a_flags & UPL_NOCOMMIT; if (pl == (upl_t)NULL) panic("smbfs_pageout: no upl"); np = VTOSMB(vp); if (size <= 0 || f_offset < 0 || f_offset >= (off_t)np->n_size || f_offset & PAGE_MASK_64 || size & PAGE_MASK) { error = EINVAL; goto exit; } if (vp->v_mount->mnt_flag & MNT_RDONLY) { error = EROFS; goto exit; } kret = ubc_upl_map(pl, &ioaddr); if (kret != KERN_SUCCESS) panic("smbfs_pageout: ubc_upl_map %d!", kret); cred = ubc_getcred(vp); if (cred == NOCRED) cred = ap->a_cred; p = current_proc(); /* * Potential FreeBSD vs Darwin VFS difference: we are not ensured a * VOP_OPEN, so do it implicitly. The log message is because we * anticipate only READ VOPs before OPEN. If this becomes * an expected code path then remove the "log". * * We also force an open for writing if it's not already open * for writing. * * XXX - when is the implied open closed? */ if (np->n_opencount == 0 || (np->n_rwstate & SMB_AM_OPENMODE) != SMB_AM_OPENRW) { log(LOG_NOTICE, "smbfs_pageout: implied open: opencount %d, rwstate 0x%x\n", np->n_opencount, np->n_rwstate); error = VOP_OPEN(vp, FWRITE, cred, p); if (error) goto unmapexit; } smb_makescred(&scred, p, cred); uio.uio_iov = &iov; uio.uio_iovcnt = 1; uio.uio_offset = f_offset; uio.uio_segflg = UIO_SYSSPACE; uio.uio_rw = UIO_WRITE; uio.uio_procp = p; if (f_offset + size > (off_t)np->n_size) { /* stop at EOF */ size -= PAGE_SIZE; size += np->n_size & PAGE_MASK_64; } uio.uio_resid = size; iov.iov_len = uio.uio_resid; iov.iov_base = (caddr_t)(ioaddr + pl_offset); vp->v_numoutput++; SMBVDEBUG("ofs=%d, resid=%d\n", (int)uio.uio_offset, uio.uio_resid); error = smb_write(smp->sm_share, np->n_fid, &uio, &scred, SMBWRTTIMO); np->n_flag |= (NFLUSHWIRE | NATTRCHANGED); vp->v_numoutput--; unmapexit: kret = ubc_upl_unmap(pl); if (kret != KERN_SUCCESS) panic("smbfs_pageout: ubc_upl_unmap %d", kret); exit: if (error) log(LOG_WARNING, "smbfs_pageout: write error=%d\n", error); else { /* if success, blow away statfs cache */ smp->sm_statfstime = 0; } if (nocommit) return (error); if (error) { (void)ubc_upl_abort_range(pl, pl_offset, ap->a_size, UPL_ABORT_DUMP_PAGES | UPL_ABORT_FREE_ON_EMPTY); } else (void)ubc_upl_commit_range(pl, pl_offset, ap->a_size, UPL_COMMIT_CLEAR_DIRTY | UPL_COMMIT_FREE_ON_EMPTY); SMBVDEBUG("paged write done: %d\n", error); return (error); } int smbfs_lock(ap) struct vop_lock_args /* { struct vnode *a_vp; int a_flags; struct proc *a_p; } */ *ap; { struct vnode *vp = ap->a_vp; /* * XXX Good news: We have a real VOP_LOCK now * XXX Bad news: VOP_LOCK call chain doesnt check for EINTR * XXX Bad news: So much for interruptible mounts */ return (lockmgr(&VTOSMB(vp)->n_lock, ap->a_flags, &vp->v_interlock, ap->a_p)); } int smbfs_unlock(ap) struct vop_unlock_args /* { struct vnode *a_vp; int a_flags; struct proc *a_p; } */ *ap; { struct vnode *vp = ap->a_vp; return (lockmgr(&VTOSMB(vp)->n_lock, ap->a_flags | LK_RELEASE, &vp->v_interlock, ap->a_p)); } int smbfs_islocked(ap) struct vop_islocked_args /* { struct vnode *a_vp; } */ *ap; { return (lockstatus(&VTOSMB(ap->a_vp)->n_lock)); } #endif /* APPLE */