/* $NetBSD: smbfs_vnops.c,v 1.95 2017/05/28 16:36:37 hannken Exp $ */ /*- * Copyright (c) 2003 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jaromir Dolecek. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * 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. * * FreeBSD: src/sys/fs/smbfs/smbfs_vnops.c,v 1.15 2001/12/20 15:56:45 bp Exp */ #include __KERNEL_RCSID(0, "$NetBSD: smbfs_vnops.c,v 1.95 2017/05/28 16:36:37 hannken Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Prototypes for SMBFS vnode operations */ int smbfs_create(void *); int smbfs_open(void *); int smbfs_close(void *); int smbfs_access(void *); int smbfs_getattr(void *); int smbfs_setattr(void *); int smbfs_read(void *); int smbfs_write(void *); int smbfs_fsync(void *); int smbfs_remove(void *); int smbfs_link(void *); int smbfs_lookup(void *); int smbfs_rename(void *); int smbfs_mkdir(void *); int smbfs_rmdir(void *); int smbfs_symlink(void *); int smbfs_readdir(void *); int smbfs_strategy(void *); int smbfs_print(void *); int smbfs_pathconf(void *ap); int smbfs_advlock(void *); int (**smbfs_vnodeop_p)(void *); static struct vnodeopv_entry_desc smbfs_vnodeop_entries[] = { { &vop_default_desc, vn_default_error }, { &vop_access_desc, smbfs_access }, { &vop_advlock_desc, smbfs_advlock }, { &vop_close_desc, smbfs_close }, { &vop_create_desc, smbfs_create }, { &vop_fallocate_desc, genfs_eopnotsupp }, { &vop_fdiscard_desc, genfs_eopnotsupp }, { &vop_fsync_desc, smbfs_fsync }, { &vop_getattr_desc, smbfs_getattr }, { &vop_getpages_desc, genfs_compat_getpages }, { &vop_inactive_desc, smbfs_inactive }, { &vop_ioctl_desc, genfs_enoioctl }, { &vop_islocked_desc, genfs_islocked }, { &vop_link_desc, smbfs_link }, { &vop_lock_desc, genfs_lock }, { &vop_lookup_desc, smbfs_lookup }, { &vop_mkdir_desc, smbfs_mkdir }, { &vop_mknod_desc, genfs_eopnotsupp }, { &vop_open_desc, smbfs_open }, { &vop_pathconf_desc, smbfs_pathconf }, { &vop_print_desc, smbfs_print }, { &vop_putpages_desc, genfs_putpages }, { &vop_read_desc, smbfs_read }, { &vop_readdir_desc, smbfs_readdir }, { &vop_reclaim_desc, smbfs_reclaim }, { &vop_remove_desc, smbfs_remove }, { &vop_rename_desc, smbfs_rename }, { &vop_rmdir_desc, smbfs_rmdir }, { &vop_setattr_desc, smbfs_setattr }, { &vop_strategy_desc, smbfs_strategy }, { &vop_symlink_desc, smbfs_symlink }, { &vop_unlock_desc, genfs_unlock }, { &vop_write_desc, smbfs_write }, { &vop_mmap_desc, genfs_mmap }, /* mmap */ { &vop_seek_desc, genfs_seek }, /* seek */ { &vop_kqfilter_desc, smbfs_kqfilter}, /* kqfilter */ { NULL, NULL } }; const struct vnodeopv_desc smbfs_vnodeop_opv_desc = { &smbfs_vnodeop_p, smbfs_vnodeop_entries }; static int smbfs_check_possible(struct vnode *vp, struct smbnode *np, mode_t mode) { /* * Disallow write attempts on read-only file systems; * unless the file is a socket, fifo, or a block or * character device resident on the file system. */ if (mode & VWRITE) { switch (vp->v_type) { case VREG: case VDIR: case VLNK: if (vp->v_mount->mnt_flag & MNT_RDONLY) return EROFS; default: break; } } return 0; } static int smbfs_check_permitted(struct vnode *vp, struct smbnode *np, mode_t mode, kauth_cred_t cred) { struct smbmount *smp = VTOSMBFS(vp); mode_t file_mode = (vp->v_type == VDIR) ? smp->sm_args.dir_mode : smp->sm_args.file_mode; return kauth_authorize_vnode(cred, KAUTH_ACCESS_ACTION(mode, vp->v_type, file_mode), vp, NULL, genfs_can_access(vp->v_type, file_mode, smp->sm_args.uid, smp->sm_args.gid, mode, cred)); } int smbfs_access(void *v) { struct vop_access_args /* { struct vnode *a_vp; int a_mode; kauth_cred_t a_cred; } */ *ap = v; struct vnode *vp = ap->a_vp; struct smbnode *np = VTOSMB(vp); u_int acc_mode = ap->a_mode; int error; #ifdef SMB_VNODE_DEBUG struct smbmount *smp = VTOSMBFS(vp); #endif SMBVDEBUG("file '%.*s', node mode=%o, acc mode=%x\n", (int) np->n_nmlen, np->n_name, (vp->v_type == VDIR) ? smp->sm_args.dir_mode : smp->sm_args.file_mode, acc_mode); error = smbfs_check_possible(vp, np, acc_mode); if (error) return error; error = smbfs_check_permitted(vp, np, acc_mode, ap->a_cred); return error; } /* ARGSUSED */ int smbfs_open(void *v) { struct vop_open_args /* { struct vnode *a_vp; int a_mode; kauth_cred_t a_cred; } */ *ap = v; struct lwp *l = curlwp; struct vnode *vp = ap->a_vp; struct smbnode *np = VTOSMB(vp); struct smb_cred scred; struct vattr vattr; u_int32_t sv_caps = SMB_CAPS(SSTOVC(np->n_mount->sm_share)); int error, accmode; SMBVDEBUG("%.*s,%d\n", (int) np->n_nmlen, np->n_name, (np->n_flag & NOPEN) != 0); 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) { if ((sv_caps & SMB_CAP_NT_SMBS) == 0) { np->n_flag |= NOPEN; return 0; } goto do_open; /* skip 'modified' check */ } if (np->n_flag & NMODIFIED) { if ((error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1)) == EINTR) return error; smbfs_attr_cacheremove(vp); error = VOP_GETATTR(vp, &vattr, ap->a_cred); if (error) return error; np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; } else { error = VOP_GETATTR(vp, &vattr, ap->a_cred); if (error) return error; if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1); if (error == EINTR) return error; np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; } } do_open: if ((np->n_flag & NOPEN) != 0) return 0; smb_makescred(&scred, l, ap->a_cred); if (vp->v_type == VDIR) error = smbfs_smb_ntcreatex(np, SMB_SM_DENYNONE|SMB_AM_OPENREAD, &scred); else { /* * 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 ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) accmode = SMB_SM_DENYNONE|SMB_AM_OPENRW; error = smbfs_smb_open(np, accmode, &scred); if (error) { if (ap->a_mode & FWRITE) return EACCES; error = smbfs_smb_open(np, SMB_SM_DENYNONE|SMB_AM_OPENREAD, &scred); } } if (!error) np->n_flag |= NOPEN; smbfs_attr_cacheremove(vp); return error; } /* * Close called. */ int smbfs_close(void *v) { struct vop_close_args /* { struct vnodeop_desc *a_desc; struct vnode *a_vp; int a_fflag; kauth_cred_t a_cred; } */ *ap = v; int error; struct lwp *l = curlwp; struct vnode *vp = ap->a_vp; struct smbnode *np = VTOSMB(vp); /* Flush all file data */ error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1); if (error) return (error); /* * We must close the directory lookup context now, so that * later directory changes would be properly detected. * Ideally, the lookup routines should handle such case, and * the context would be removed only in smbfs_inactive(). */ if (vp->v_type == VDIR && (np->n_flag & NOPEN) != 0) { struct smb_share *ssp = np->n_mount->sm_share; struct smb_cred scred; smb_makescred(&scred, l, ap->a_cred); if (np->n_dirseq != NULL) { smbfs_findclose(np->n_dirseq, &scred); np->n_dirseq = NULL; } if (SMB_CAPS(SSTOVC(ssp)) & SMB_CAP_NT_SMBS) smbfs_smb_close(ssp, np->n_fid, &np->n_mtime, &scred); np->n_flag &= ~NOPEN; smbfs_attr_cacheremove(vp); } return (0); } /* * smbfs_getattr call from vfs. */ int smbfs_getattr(void *v) { struct vop_getattr_args /* { struct vnode *a_vp; struct vattr *a_vap; kauth_cred_t a_cred; } */ *ap = v; struct vnode *vp = ap->a_vp; struct smbnode *np = VTOSMB(vp); struct vattr *va=ap->a_vap; struct smbfattr fattr; struct smb_cred scred; u_quad_t oldsize; int error; SMBVDEBUG("%p: '%.*s' isroot %d\n", vp, (int) np->n_nmlen, np->n_name, (vp->v_vflag & VV_ROOT) != 0); if ((error = smbfs_attr_cachelookup(vp, va)) == 0) return (0); SMBVDEBUG0("not in the cache\n"); smb_makescred(&scred, curlwp, ap->a_cred); oldsize = np->n_size; error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred); if (error) { SMBVDEBUG("error %d\n", error); return error; } smbfs_attr_cacheenter(vp, &fattr); smbfs_attr_cachelookup(vp, va); if ((np->n_flag & NOPEN) != 0) np->n_size = oldsize; return 0; } int smbfs_setattr(void *v) { struct vop_setattr_args /* { struct vnode *a_vp; struct vattr *a_vap; kauth_cred_t a_cred; } */ *ap = v; struct lwp *l = curlwp; struct vnode *vp = ap->a_vp; struct smbnode *np = VTOSMB(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; SMBVDEBUG0("\n"); if (vap->va_flags != 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, l, ap->a_cred); if (vap->va_size != 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; np->n_size = vap->va_size; uvm_vnp_setsize(vp, vap->va_size); if ((np->n_flag & NOPEN) == 0) { error = smbfs_smb_open(np, SMB_SM_DENYNONE|SMB_AM_OPENRW, &scred); if (error == 0) doclose = 1; } if (error == 0) error = smbfs_smb_setfsize(np, vap->va_size, &scred); if (doclose) smbfs_smb_close(ssp, np->n_fid, NULL, &scred); if (error) { np->n_size = tsize; uvm_vnp_setsize(vp, tsize); return (error); } } 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) { error = kauth_authorize_vnode(ap->a_cred, KAUTH_VNODE_WRITE_TIMES, ap->a_vp, NULL, genfs_can_chtimes(ap->a_vp, vap->va_vaflags, VTOSMBFS(vp)->sm_args.uid, ap->a_cred)); if (error) return (error); #if 0 if (mtime == NULL) mtime = &np->n_mtime; if (atime == NULL) atime = &np->n_atime; #endif /* * If file is opened, then we can use handle based calls. * If not, use path based ones. */ if ((np->n_flag & NOPEN) == 0) { if (vcp->vc_flags & SMBV_WIN95) { error = VOP_OPEN(vp, FWRITE, ap->a_cred); if (!error) { /* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); VOP_GETATTR(vp, &vattr, ap->a_cred);*/ if (mtime) np->n_mtime = *mtime; VOP_CLOSE(vp, FWRITE, ap->a_cred); } } else if (SMB_CAPS(vcp) & SMB_CAP_NT_SMBS) { 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, 0, mtime, &scred); } } else { if (SMB_CAPS(vcp) & 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 { /* * XXX I have no idea how to handle this for core * level servers. The possible solution is to * update mtime after file is closed. */ } } } /* * Invalidate attribute cache in case if server doesn't set * required attributes. */ smbfs_attr_cacheremove(vp); /* invalidate cache */ VOP_GETATTR(vp, vap, ap->a_cred); np->n_mtime.tv_sec = vap->va_mtime.tv_sec; VN_KNOTE(vp, NOTE_ATTRIB); return error; } /* * smbfs_read call. */ int smbfs_read(void *v) { struct vop_read_args /* { struct vnode *a_vp; struct uio *a_uio; int a_ioflag; kauth_cred_t a_cred; } */ *ap = v; struct vnode *vp = ap->a_vp; if (vp->v_type != VREG && vp->v_type != VDIR) return EPERM; return smbfs_readvnode(vp, ap->a_uio, ap->a_cred); } int smbfs_write(void *v) { struct vop_write_args /* { struct vnode *a_vp; struct uio *a_uio; int a_ioflag; kauth_cred_t a_cred; } */ *ap = v; struct vnode *vp = ap->a_vp; struct uio *uio = ap->a_uio; SMBVDEBUG("%d,ofs=%lld,sz=%zu\n",vp->v_type, (long long int)uio->uio_offset, uio->uio_resid); if (vp->v_type != VREG) return (EPERM); return smbfs_writevnode(vp, uio, ap->a_cred, ap->a_ioflag); } /* * 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. */ int smbfs_create(void *v) { struct vop_create_v3_args /* { struct vnode *a_dvp; struct vnode **a_vpp; struct componentname *a_cnp; struct vattr *a_vap; } */ *ap = v; struct vnode *dvp = ap->a_dvp; struct vattr *vap = ap->a_vap; struct componentname *cnp = ap->a_cnp; struct smbnode *dnp = VTOSMB(dvp); struct smbfattr fattr; struct smb_cred scred; const char *name = cnp->cn_nameptr; int nmlen = cnp->cn_namelen; int error = EINVAL; if (vap->va_type != VREG) goto out; smb_makescred(&scred, curlwp, cnp->cn_cred); error = smbfs_smb_create(dnp, name, nmlen, &scred); if (error) goto out; error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); if (error) goto out; error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, ap->a_vpp); if (error) goto out; cache_enter(dvp, *ap->a_vpp, cnp->cn_nameptr, cnp->cn_namelen, cnp->cn_flags); out: VN_KNOTE(dvp, NOTE_WRITE); return (error); } int smbfs_remove(void *v) { struct vop_remove_v2_args /* { struct vnodeop_desc *a_desc; struct vnode * a_dvp; struct vnode * a_vp; struct componentname * a_cnp; } */ *ap = v; struct vnode *vp = ap->a_vp; struct vnode *dvp = ap->a_dvp; struct componentname *cnp = ap->a_cnp; struct smbnode *np = VTOSMB(vp); struct smb_cred scred; int error; if (vp->v_type == VDIR || (np->n_flag & NOPEN) != 0 || vp->v_usecount != 1) { /* XXX Eventually should do something along NFS sillyrename */ error = EPERM; } else { smb_makescred(&scred, curlwp, cnp->cn_cred); error = smbfs_smb_delete(np, &scred); } if (error == 0) np->n_flag |= NGONE; VN_KNOTE(ap->a_vp, NOTE_DELETE); VN_KNOTE(ap->a_dvp, NOTE_WRITE); if (dvp == vp) vrele(vp); else vput(vp); return (error); } /* * smbfs_file rename call */ int smbfs_rename(void *v) { 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 = v; 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 componentname *tcnp = ap->a_tcnp; /* struct componentname *fcnp = ap->a_fcnp;*/ struct smb_cred scred; #ifdef notyet u_int16_t flags = 6; #endif int error=0; /* Check for cross-device rename */ if ((fvp->v_mount != tdvp->v_mount) || (tvp && (fvp->v_mount != tvp->v_mount))) { error = EXDEV; goto out; } if (tvp && tvp->v_usecount > 1) { error = EBUSY; goto out; } #ifdef notnow 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; } #endif smb_makescred(&scred, curlwp, tcnp->cn_cred); /* * It seems that Samba doesn't implement SMB_COM_MOVE call... */ #ifdef notnow if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) { error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp), tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred); } else #endif { /* * We have to do the work atomicaly */ if (tvp && tvp != fvp) { error = smbfs_smb_delete(VTOSMB(tvp), &scred); if (error) goto out; VTOSMB(tvp)->n_flag |= NGONE; VN_KNOTE(tdvp, NOTE_WRITE); VN_KNOTE(tvp, NOTE_DELETE); cache_purge(tvp); } error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp), tcnp->cn_nameptr, tcnp->cn_namelen, &scred); VTOSMB(fvp)->n_flag |= NGONE; VN_KNOTE(fdvp, NOTE_WRITE); VN_KNOTE(fvp, NOTE_RENAME); } if (fvp->v_type == VDIR) { if (tvp != NULL && tvp->v_type == VDIR) cache_purge(tdvp); cache_purge(fdvp); } smbfs_attr_cacheremove(fdvp); smbfs_attr_cacheremove(tdvp); out: if (tdvp == tvp) vrele(tdvp); else vput(tdvp); if (tvp) vput(tvp); vrele(fdvp); vrele(fvp); return (error); } /* * somtime it will come true... */ int smbfs_link(void *v) { return genfs_eopnotsupp(v); } /* * smbfs_symlink link create call. * Sometime it will be functional... */ int smbfs_symlink(void *v) { return genfs_eopnotsupp(v); } int smbfs_mkdir(void *v) { struct vop_mkdir_v3_args /* { struct vnode *a_dvp; struct vnode **a_vpp; struct componentname *a_cnp; struct vattr *a_vap; } */ *ap = v; 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 smb_cred scred; struct smbfattr fattr; const char *name = cnp->cn_nameptr; int len = cnp->cn_namelen; int error; if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))){ error = EEXIST; goto out; } smb_makescred(&scred, curlwp, cnp->cn_cred); error = smbfs_smb_mkdir(dnp, name, len, &scred); if (error) goto out; error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred); if (error) goto out; error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp); if (error) goto out; *ap->a_vpp = vp; out: VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK); return (error); } /* * smbfs_remove directory call */ int smbfs_rmdir(void *v) { struct vop_rmdir_v2_args /* { struct vnode *a_dvp; struct vnode *a_vp; struct componentname *a_cnp; } */ *ap = v; 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) { vrele(vp); return (EINVAL); } smb_makescred(&scred, curlwp, cnp->cn_cred); error = smbfs_smb_rmdir(np, &scred); if (error == 0) np->n_flag |= NGONE; dnp->n_flag |= NMODIFIED; smbfs_attr_cacheremove(dvp); VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK); VN_KNOTE(vp, NOTE_DELETE); cache_purge(dvp); cache_purge(vp); vput(vp); return (error); } /* * smbfs_readdir call */ int smbfs_readdir(void *v) { struct vop_readdir_args /* { struct vnode *a_vp; struct uio *a_uio; kauth_cred_t a_cred; int *a_eofflag; u_long *a_cookies; int a_ncookies; } */ *ap = v; struct vnode *vp = ap->a_vp; if (vp->v_type != VDIR) return (EPERM); #ifdef notnow if (ap->a_ncookies) { printf("smbfs_readdir: no support for cookies now..."); return (EOPNOTSUPP); } #endif return (smbfs_readvnode(vp, ap->a_uio, ap->a_cred)); } /* ARGSUSED */ int smbfs_fsync(void *v) { /*return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_l, 1));*/ return (0); } int smbfs_print(void *v) { struct vop_print_args /* { struct vnode *a_vp; } */ *ap = v; struct vnode *vp = ap->a_vp; struct smbnode *np = VTOSMB(vp); printf("tag VT_SMBFS, name = %.*s, parent = %p, open = %d\n", (int)np->n_nmlen, np->n_name, np->n_parent ? np->n_parent : NULL, (np->n_flag & NOPEN) != 0); return (0); } int smbfs_pathconf(void *v) { struct vop_pathconf_args /* { struct vnode *vp; int a_name; register_t *a_retval; } */ *ap = v; register_t *retval = ap->a_retval; int error = 0; switch (ap->a_name) { case _PC_PIPE_BUF: *retval = PIPE_BUF; break; case _PC_SYNC_IO: *retval = 1; break; case _PC_LINK_MAX: *retval = 0; break; case _PC_NAME_MAX: *retval = ap->a_vp->v_mount->mnt_stat.f_namemax; break; case _PC_PATH_MAX: *retval = 800; /* XXX: a correct one ? */ break; default: error = EINVAL; break; } return (error); } int smbfs_strategy(void *v) { struct vop_strategy_args /* { struct vnode *a_vp; struct buf *a_bp; } */ *ap = v; struct buf *bp = ap->a_bp; kauth_cred_t cr; struct lwp *l; int error = 0; SMBVDEBUG0("\n"); if ((bp->b_flags & (B_PHYS|B_ASYNC)) == (B_PHYS|B_ASYNC)) panic("smbfs physio/async"); if (bp->b_flags & B_ASYNC) { l = NULL; cr = NULL; } else { l = curlwp; /* XXX */ cr = l->l_cred; } if ((bp->b_flags & B_ASYNC) == 0) error = smbfs_doio(bp, cr, l); return (error); } #ifndef __NetBSD__ 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 kauth_cred_t a_cred; }; */ { struct vnode *vp = ap->a_vp; struct lwp *l = ap->a_l; kauth_cred_t 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, td); if (error) return error; error = VOP_GETATTR(vp, &vattr, cred, td); 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 /* !__NetBSD__ */ /* * Since we expected to support F_GETLK (and SMB protocol has no such function), * it is necessary to use lf_advlock(). It would be nice if this function had * a callback mechanism because it will help to improve a level of consistency. */ int smbfs_advlock(void *v) { struct vop_advlock_args /* { struct vnode *a_vp; void *a_id; int a_op; struct flock *a_fl; int a_flags; } */ *ap = v; struct vnode *vp = ap->a_vp; struct smbnode *np = VTOSMB(vp); struct flock *fl = ap->a_fl; struct lwp *l = curlwp; struct smb_cred scred; u_quad_t size; off_t start, end, oadd; int error, lkop; if (vp->v_type == VDIR) { /* * SMB protocol have no support for directory locking. * Although locks can be processed on local machine, I don't * think that this is a good idea, because some programs * can work wrong assuming directory is locked. So, we just * return 'operation not supported'. */ return EOPNOTSUPP; } size = np->n_size; switch (fl->l_whence) { case SEEK_SET: case SEEK_CUR: start = fl->l_start; break; case SEEK_END: #ifndef __NetBSD__ if (size > OFF_MAX || (fl->l_start > 0 && size > OFF_MAX - fl->l_start)) return EOVERFLOW; #endif start = size + fl->l_start; break; default: return EINVAL; } if (start < 0) return EINVAL; if (fl->l_len < 0) { if (start == 0) return EINVAL; end = start - 1; start += fl->l_len; if (start < 0) return EINVAL; } else if (fl->l_len == 0) end = -1; else { oadd = fl->l_len - 1; #ifndef __NetBSD__ if (oadd > OFF_MAX - start) return EOVERFLOW; #endif end = start + oadd; } smb_makescred(&scred, l, l ? l->l_cred : NULL); switch (ap->a_op) { case F_SETLK: switch (fl->l_type) { case F_WRLCK: lkop = SMB_LOCK_EXCL; break; case F_RDLCK: lkop = SMB_LOCK_SHARED; break; case F_UNLCK: lkop = SMB_LOCK_RELEASE; break; default: return EINVAL; } error = lf_advlock(ap, &np->n_lockf, size); if (error) break; /* * The ID we use for smb_lock is passed as PID to SMB * server. It MUST agree with PID as setup in basic * SMB header in later write requests, otherwise SMB server * returns EDEADLK. See also smb_rq_new() on SMB header setup. */ error = smbfs_smb_lock(np, lkop,(void *)1, start, end, &scred); if (error) { ap->a_op = F_UNLCK; lf_advlock(ap, &np->n_lockf, size); } break; case F_UNLCK: lf_advlock(ap, &np->n_lockf, size); error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, ap->a_id, start, end, &scred); break; case F_GETLK: error = lf_advlock(ap, &np->n_lockf, size); break; default: return EINVAL; } return error; } static int smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen) { static const char * const badchars = "*/\\:<>;?"; static const char * const badchars83 = " +|,[]="; const char *cp; int i; if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) { /* * Name should conform 8.3 format */ if (nmlen > 12) return (ENAMETOOLONG); if ((cp = memchr(name, '.', nmlen)) == NULL || cp == name || (cp - name) > 8 || (cp = memchr(cp + 1, '.', nmlen - (cp - name))) != NULL) goto bad; for (cp = name, i = 0; i < nmlen; i++, cp++) if (strchr(badchars83, *cp) != NULL) goto bad; } for (cp = name, i = 0; i < nmlen; i++, cp++) if (strchr(badchars, *cp) != NULL) goto bad; /* name is fine */ return (0); bad: return (ENOENT); } /* * Things go even weird without fixed inode numbers... */ int smbfs_lookup(void *v) { struct vop_lookup_v2_args /* { struct vnode *a_dvp; struct vnode **a_vpp; struct componentname *a_cnp; } */ *ap = v; struct componentname *cnp = ap->a_cnp; struct vnode *dvp = ap->a_dvp; struct vnode **vpp = ap->a_vpp; struct mount *mp = dvp->v_mount; struct smbnode *dnp; struct smbfattr fattr; 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 error, islastcn, isdot; /* * Check accessiblity of directory. */ error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred); if (error) return (error); if ((cnp->cn_flags & ISLASTCN) && (dvp->v_mount->mnt_flag & MNT_RDONLY) && (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) return (EROFS); SMBVDEBUG("%d '%.*s' in '%.*s'\n", nameiop, nmlen, name, (int) VTOSMB(dvp)->n_nmlen, VTOSMB(dvp)->n_name); islastcn = flags & ISLASTCN; /* * Before tediously performing a linear scan of the directory, * check the name cache to see if the directory/name pair * we are looking for is known already. * If the directory/name pair is found in the name cache, * we have to ensure the directory has not changed from * the time the cache entry has been created. If it has, * the cache entry has to be ignored. */ if (cache_lookup(dvp, cnp->cn_nameptr, cnp->cn_namelen, cnp->cn_nameiop, cnp->cn_flags, NULL, vpp)) { struct vattr vattr; struct vnode *newvp; bool killit = false; error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred); if (error != 0) { if (*vpp != NULLVP) { vrele(*vpp); } *vpp = NULLVP; return error; } if (*vpp == NULLVP) { if (!VOP_GETATTR(dvp, &vattr, cnp->cn_cred) && vattr.va_mtime.tv_sec == VTOSMB(dvp)->n_nctime) return ENOENT; cache_purge(dvp); VTOSMB(dvp)->n_nctime = 0; goto dolookup; } newvp = *vpp; if (newvp != dvp) vn_lock(newvp, LK_SHARED | LK_RETRY); error = VOP_GETATTR(newvp, &vattr, cnp->cn_cred); /* * If the file type on the server is inconsistent * with what it was when we created the vnode, * kill the bogus vnode now and fall through to * the code below to create a new one with the * right type. */ if (error == 0 && ((newvp->v_type == VDIR && (VTOSMB(newvp)->n_dosattr & SMB_FA_DIR) == 0) || (newvp->v_type == VREG && (VTOSMB(newvp)->n_dosattr & SMB_FA_DIR) != 0))) killit = true; else if (error == 0 && vattr.va_ctime.tv_sec == VTOSMB(newvp)->n_ctime) { if (newvp != dvp) VOP_UNLOCK(newvp); /* nfsstats.lookupcache_hits++; */ return (0); } cache_purge(newvp); if (newvp != dvp) { if (killit) { smbfs_uncache(newvp); } else vput(newvp); } else vrele(newvp); *vpp = NULLVP; } dolookup: /* ensure the name is sane */ if (nameiop != LOOKUP) { error = smbfs_pathcheck(VFSTOSMBFS(mp), cnp->cn_nameptr, cnp->cn_namelen); if (error) return (error); } dnp = VTOSMB(dvp); isdot = (nmlen == 1 && name[0] == '.'); /* * entry is not in the cache or has been expired */ smb_makescred(&scred, curlwp, cnp->cn_cred); if (flags & ISDOTDOT) error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0, &fattr, &scred); else error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); if (error) { /* Not found */ if (error != ENOENT) return (error); /* * Handle RENAME or CREATE case... */ if ((nameiop == CREATE || nameiop == RENAME) && islastcn) { /* * Access for write is interpreted as allowing * creation of files in the directory. */ error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); if (error) return (error); return (EJUSTRETURN); } /* * Insert name into cache (as non-existent) if appropriate. */ if (nameiop != CREATE) cache_enter(dvp, *vpp, cnp->cn_nameptr, cnp->cn_namelen, cnp->cn_flags); return (ENOENT); } /* Found */ /* Handle RENAME case... */ if (nameiop == RENAME && islastcn) { error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); if (error) return (error); if (isdot) return (EISDIR); error = smbfs_nget(mp, dvp, name, nmlen, &fattr, vpp); if (error) return (error); return (0); } if (isdot) { vref(dvp); *vpp = dvp; error = 0; } else { error = smbfs_nget(mp, dvp, name, nmlen, ((flags & ISDOTDOT) ? NULL : &fattr), vpp); } if (error) return error; if (cnp->cn_nameiop != DELETE || !islastcn) { VTOSMB(*vpp)->n_ctime = VTOSMB(*vpp)->n_mtime.tv_sec; cache_enter(dvp, *vpp, cnp->cn_nameptr, cnp->cn_namelen, cnp->cn_flags); #ifdef notdef } else if (error == ENOENT && cnp->cn_nameiop != CREATE) { VTOSMB(*vpp)->n_nctime = VTOSMB(*vpp)->n_mtime.tv_sec; cache_enter(dvp, *vpp, cnp->cn_nameptr, cnp->cn_namelen, cnp->cn_flags); #endif } return (0); }