/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright 2018 Nexenta Systems, Inc. All rights reserved. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * CATIA support * * CATIA V4 is a UNIX product and uses characters in filenames that * are considered invalid by Windows. CATIA V5 is available on both * UNIX and Windows. Thus, as CATIA customers migrate from V4 to V5, * some V4 files could become inaccessible to windows clients if the * filename contains the characters that are considered illegal in * Windows. In order to address this issue an optional character * translation is applied to filenames at the smb_vop interface. * * Character Translation Table * ---------------------------------- * Unix-char (v4) | Windows-char (v5) * ---------------------------------- * * | 0x00a4 Currency Sign * | | 0x00a6 Broken Bar * " | 0x00a8 Diaeresis * < | 0x00ab Left-Pointing Double Angle Quotation Mark * > | 0x00bb Right-Pointing Double Angle Quotation Mark * ? | 0x00bf Inverted Question mark * : | 0x00f7 Division Sign * / | 0x00f8 Latin Small Letter o with stroke * \ | 0x00ff Latin Small Letter Y with Diaeresis * * * Two lookup tables are used to perform the character translation: * * smb_catia_v5_lookup - provides the mapping between UNIX ASCII (v4) * characters and equivalent or translated wide characters. * It is indexed by the decimal value of the ASCII character (0-127). * * smb_catia_v4_lookup - provides the mapping between wide characters * in the range from 0x00A4 to 0x00FF and their UNIX (v4) equivalent * (in wide character format). It is indexed by the decimal value of * the wide character (164-255) with an offset of -164. * If this translation produces a filename containing a '/' create, mkdir * or rename (to the '/' name) operations will not be permitted. It is * not valid to create a filename with a '/' in it. However, if such a * file already exists other operations (e.g, lookup, delete, rename) * are permitted on it. */ /* number of characters mapped */ #define SMB_CATIA_NUM_MAPS 9 /* Windows Characters used in special character mapping */ #define SMB_CATIA_WIN_CURRENCY 0x00a4 #define SMB_CATIA_WIN_BROKEN_BAR 0x00a6 #define SMB_CATIA_WIN_DIAERESIS 0x00a8 #define SMB_CATIA_WIN_LEFT_ANGLE 0x00ab #define SMB_CATIA_WIN_RIGHT_ANGLE 0x00bb #define SMB_CATIA_WIN_INVERTED_QUESTION 0x00bf #define SMB_CATIA_WIN_DIVISION 0x00f7 #define SMB_CATIA_WIN_LATIN_O 0x00f8 #define SMB_CATIA_WIN_LATIN_Y 0x00ff #define SMB_CATIA_V4_LOOKUP_LOW SMB_CATIA_WIN_CURRENCY #define SMB_CATIA_V4_LOOKUP_UPPER SMB_CATIA_WIN_LATIN_Y #define SMB_CATIA_V4_LOOKUP_MAX \ (SMB_CATIA_V4_LOOKUP_UPPER - SMB_CATIA_V4_LOOKUP_LOW + 1) #define SMB_CATIA_V5_LOOKUP_MAX 0x0080 typedef struct smb_catia_map { unsigned char unixchar; /* v4 */ smb_wchar_t winchar; /* v5 */ } smb_catia_map_t; smb_catia_map_t const catia_maps[SMB_CATIA_NUM_MAPS] = { {'"', SMB_CATIA_WIN_DIAERESIS}, {'*', SMB_CATIA_WIN_CURRENCY}, {':', SMB_CATIA_WIN_DIVISION}, {'<', SMB_CATIA_WIN_LEFT_ANGLE}, {'>', SMB_CATIA_WIN_RIGHT_ANGLE}, {'?', SMB_CATIA_WIN_INVERTED_QUESTION}, {'\\', SMB_CATIA_WIN_LATIN_Y}, {'/', SMB_CATIA_WIN_LATIN_O}, {'|', SMB_CATIA_WIN_BROKEN_BAR} }; static smb_wchar_t smb_catia_v5_lookup[SMB_CATIA_V5_LOOKUP_MAX]; static smb_wchar_t smb_catia_v4_lookup[SMB_CATIA_V4_LOOKUP_MAX]; static void smb_vop_setup_xvattr(smb_attr_t *smb_attr, xvattr_t *xvattr); static void smb_sa_to_va_mask(uint_t sa_mask, uint_t *va_maskp); static callb_cpr_t *smb_lock_frlock_callback(flk_cb_when_t, void *); static void smb_vop_catia_init(); extern sysid_t lm_alloc_sysidt(); #define SMB_AT_MAX 16 static const uint_t smb_attrmap[SMB_AT_MAX] = { 0, AT_TYPE, AT_MODE, AT_UID, AT_GID, AT_FSID, AT_NODEID, AT_NLINK, AT_SIZE, AT_ATIME, AT_MTIME, AT_CTIME, AT_RDEV, AT_BLKSIZE, AT_NBLOCKS, AT_SEQ }; static boolean_t smb_vop_initialized = B_FALSE; caller_context_t smb_ct; /* * smb_vop_init * * This function is not multi-thread safe. The caller must make sure only one * thread makes the call. */ int smb_vop_init(void) { if (smb_vop_initialized) return (0); /* * The caller_context will be used primarily for range locking. * Since the CIFS server is mapping its locks to POSIX locks, * only one pid is used for operations originating from the * CIFS server (to represent CIFS in the VOP_FRLOCK routines). * * XXX: Should smb_ct be per-zone? */ smb_ct.cc_sysid = lm_alloc_sysidt(); if (smb_ct.cc_sysid == LM_NOSYSID) return (ENOMEM); smb_ct.cc_caller_id = fs_new_caller_id(); smb_ct.cc_pid = IGN_PID; smb_ct.cc_flags = 0; smb_vop_catia_init(); smb_vop_initialized = B_TRUE; return (0); } /* * smb_vop_fini * * This function is not multi-thread safe. The caller must make sure only one * thread makes the call. */ void smb_vop_fini(void) { if (!smb_vop_initialized) return; lm_free_sysidt(smb_ct.cc_sysid); smb_ct.cc_pid = IGN_PID; smb_ct.cc_sysid = LM_NOSYSID; smb_vop_initialized = B_FALSE; } /* * The smb_ct will be used primarily for range locking. * Since the CIFS server is mapping its locks to POSIX locks, * only one pid is used for operations originating from the * CIFS server (to represent CIFS in the VOP_FRLOCK routines). */ int smb_vop_open(vnode_t **vpp, int mode, cred_t *cred) { return (VOP_OPEN(vpp, mode, cred, &smb_ct)); } void smb_vop_close(vnode_t *vp, int mode, cred_t *cred) { (void) VOP_CLOSE(vp, mode, 1, (offset_t)0, cred, &smb_ct); } int smb_vop_other_opens(vnode_t *vp, int mode) { return (((mode & FWRITE) && vn_has_other_opens(vp, V_WRITE)) || (((mode & FWRITE) == 0) && vn_is_opened(vp, V_WRITE)) || ((mode & FREAD) && vn_has_other_opens(vp, V_READ)) || (((mode & FREAD) == 0) && vn_is_opened(vp, V_READ)) || vn_is_mapped(vp, V_RDORWR)); } /* * The smb_vop_* functions have minimal knowledge of CIFS semantics and * serve as an interface to the VFS layer. * * Only smb_fsop_* layer functions should call smb_vop_* layer functions. * (Higher-level CIFS service code should never skip the smb_fsop_* layer * to call smb_vop_* layer functions directly.) */ /* * XXX - Extended attributes support in the file system assumed. * This is needed for full NT Streams functionality. */ int smb_vop_read(vnode_t *vp, uio_t *uiop, cred_t *cr) { int error; (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, &smb_ct); error = VOP_READ(vp, uiop, 0, cr, &smb_ct); VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, &smb_ct); return (error); } int smb_vop_write(vnode_t *vp, uio_t *uiop, int ioflag, uint32_t *lcount, cred_t *cr) { int error; *lcount = uiop->uio_resid; uiop->uio_llimit = MAXOFFSET_T; (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, &smb_ct); error = VOP_WRITE(vp, uiop, ioflag, cr, &smb_ct); VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, &smb_ct); *lcount -= uiop->uio_resid; return (error); } int smb_vop_ioctl(vnode_t *vp, int cmd, void *arg, cred_t *cr) { int error, rval = 0; uint_t flags = 0; #ifdef FKIOCTL flags |= FKIOCTL; #endif error = VOP_IOCTL(vp, cmd, (intptr_t)arg, (int)flags, cr, &rval, &smb_ct); if (error != 0) rval = error; return (rval); } /* * smb_vop_getattr() * * smb_fsop_getattr()/smb_vop_getattr() should always be called from the CIFS * service (instead of calling VOP_GETATTR directly) to retrieve attributes * due to special processing needed for streams files. * * All attributes are retrieved. * * When vp denotes a named stream, then unnamed_vp should be passed in (denoting * the corresponding unnamed stream). * A named stream's attributes (as far as CIFS is concerned) are those of the * unnamed stream (minus the size attribute, and the type), plus the size of * the named stream, and a type value of VREG. * Although the file system may store other attributes with the named stream, * these should not be used by CIFS for any purpose. * * File systems without VFSFT_XVATTR do not support DOS attributes or create * time (crtime). In this case the mtime is used as the crtime. * Likewise if VOP_GETATTR doesn't return any system attributes the dosattr * is 0 and the mtime is used as the crtime. */ int smb_vop_getattr(vnode_t *vp, vnode_t *unnamed_vp, smb_attr_t *ret_attr, int flags, cred_t *cr) { int error; vnode_t *use_vp; smb_attr_t tmp_attr; xvattr_t tmp_xvattr; xoptattr_t *xoap = NULL; if (unnamed_vp) use_vp = unnamed_vp; else use_vp = vp; if (vfs_has_feature(use_vp->v_vfsp, VFSFT_XVATTR)) { xva_init(&tmp_xvattr); xoap = xva_getxoptattr(&tmp_xvattr); ASSERT(xoap); smb_sa_to_va_mask(ret_attr->sa_mask, &tmp_xvattr.xva_vattr.va_mask); XVA_SET_REQ(&tmp_xvattr, XAT_READONLY); XVA_SET_REQ(&tmp_xvattr, XAT_HIDDEN); XVA_SET_REQ(&tmp_xvattr, XAT_SYSTEM); XVA_SET_REQ(&tmp_xvattr, XAT_ARCHIVE); XVA_SET_REQ(&tmp_xvattr, XAT_CREATETIME); XVA_SET_REQ(&tmp_xvattr, XAT_REPARSE); XVA_SET_REQ(&tmp_xvattr, XAT_OFFLINE); XVA_SET_REQ(&tmp_xvattr, XAT_SPARSE); error = VOP_GETATTR(use_vp, &tmp_xvattr.xva_vattr, flags, cr, &smb_ct); if (error != 0) return (error); ret_attr->sa_vattr = tmp_xvattr.xva_vattr; ret_attr->sa_dosattr = 0; if (tmp_xvattr.xva_vattr.va_mask & AT_XVATTR) { xoap = xva_getxoptattr(&tmp_xvattr); ASSERT(xoap); if ((XVA_ISSET_RTN(&tmp_xvattr, XAT_READONLY)) && (xoap->xoa_readonly)) { ret_attr->sa_dosattr |= FILE_ATTRIBUTE_READONLY; } if ((XVA_ISSET_RTN(&tmp_xvattr, XAT_HIDDEN)) && (xoap->xoa_hidden)) { ret_attr->sa_dosattr |= FILE_ATTRIBUTE_HIDDEN; } if ((XVA_ISSET_RTN(&tmp_xvattr, XAT_SYSTEM)) && (xoap->xoa_system)) { ret_attr->sa_dosattr |= FILE_ATTRIBUTE_SYSTEM; } if ((XVA_ISSET_RTN(&tmp_xvattr, XAT_ARCHIVE)) && (xoap->xoa_archive)) { ret_attr->sa_dosattr |= FILE_ATTRIBUTE_ARCHIVE; } if ((XVA_ISSET_RTN(&tmp_xvattr, XAT_REPARSE)) && (xoap->xoa_reparse)) { ret_attr->sa_dosattr |= FILE_ATTRIBUTE_REPARSE_POINT; } if ((XVA_ISSET_RTN(&tmp_xvattr, XAT_OFFLINE)) && (xoap->xoa_offline)) { ret_attr->sa_dosattr |= FILE_ATTRIBUTE_OFFLINE; } if ((XVA_ISSET_RTN(&tmp_xvattr, XAT_SPARSE)) && (xoap->xoa_sparse)) { ret_attr->sa_dosattr |= FILE_ATTRIBUTE_SPARSE_FILE; } ret_attr->sa_crtime = xoap->xoa_createtime; } else { ret_attr->sa_crtime = ret_attr->sa_vattr.va_mtime; } } else { /* * Support for file systems without VFSFT_XVATTR */ smb_sa_to_va_mask(ret_attr->sa_mask, &ret_attr->sa_vattr.va_mask); error = VOP_GETATTR(use_vp, &ret_attr->sa_vattr, flags, cr, &smb_ct); if (error != 0) return (error); ret_attr->sa_dosattr = 0; ret_attr->sa_crtime = ret_attr->sa_vattr.va_mtime; } if (unnamed_vp) { ret_attr->sa_vattr.va_type = VREG; if (ret_attr->sa_mask & (SMB_AT_SIZE | SMB_AT_NBLOCKS)) { tmp_attr.sa_vattr.va_mask = AT_SIZE | AT_NBLOCKS; error = VOP_GETATTR(vp, &tmp_attr.sa_vattr, flags, cr, &smb_ct); if (error != 0) return (error); ret_attr->sa_vattr.va_size = tmp_attr.sa_vattr.va_size; ret_attr->sa_vattr.va_nblocks = tmp_attr.sa_vattr.va_nblocks; } } if (ret_attr->sa_vattr.va_type == VDIR) ret_attr->sa_dosattr |= FILE_ATTRIBUTE_DIRECTORY; return (error); } /* * smb_vop_setattr() * * smb_fsop_setattr()/smb_vop_setattr() should always be used instead of * VOP_SETATTR() when calling from the CIFS service, due to special processing * for streams files. * * Streams have a size but otherwise do not have separate attributes from * the (unnamed stream) file, i.e., the security and ownership of the file * applies to the stream. In contrast, extended attribute files, which are * used to implement streams, are independent objects with their own * attributes. * * For compatibility with streams, we set the size on the extended attribute * file and apply other attributes to the (unnamed stream) file. The one * exception is that the UID and GID can be set on the stream by passing a * NULL unnamed_vp, which allows callers to synchronize stream ownership * with the (unnamed stream) file. */ int smb_vop_setattr(vnode_t *vp, vnode_t *unnamed_vp, smb_attr_t *attr, int flags, cred_t *cr) { int error = 0; int at_size = 0; vnode_t *use_vp; xvattr_t xvattr; vattr_t *vap; if (attr->sa_mask & SMB_AT_DOSATTR) { attr->sa_dosattr &= (FILE_ATTRIBUTE_ARCHIVE | FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_OFFLINE | FILE_ATTRIBUTE_SPARSE_FILE); } if (unnamed_vp) { use_vp = unnamed_vp; if (attr->sa_mask & SMB_AT_SIZE) { at_size = 1; attr->sa_mask &= ~SMB_AT_SIZE; } } else { use_vp = vp; } /* * The caller should not be setting sa_vattr.va_mask, * but rather sa_mask. */ attr->sa_vattr.va_mask = 0; if (vfs_has_feature(use_vp->v_vfsp, VFSFT_XVATTR)) { smb_vop_setup_xvattr(attr, &xvattr); vap = &xvattr.xva_vattr; } else { smb_sa_to_va_mask(attr->sa_mask, &attr->sa_vattr.va_mask); vap = &attr->sa_vattr; } if ((error = VOP_SETATTR(use_vp, vap, flags, cr, &smb_ct)) != 0) return (error); if (at_size) { attr->sa_vattr.va_mask = AT_SIZE; error = VOP_SETATTR(vp, &attr->sa_vattr, flags, zone_kcred(), &smb_ct); } return (error); } int smb_vop_space(vnode_t *vp, int cmd, flock64_t *bfp, int flags, offset_t offset, cred_t *cr) { int error; error = VOP_SPACE(vp, cmd, bfp, flags, offset, cr, &smb_ct); return (error); } /* * smb_vop_access * * This is a wrapper round VOP_ACCESS. VOP_ACCESS checks the given mode * against file's ACL or Unix permissions. CIFS on the other hand needs to * know if the requested operation can succeed for the given object, this * requires more checks in case of DELETE bit since permissions on the parent * directory are important as well. Based on Windows rules if parent's ACL * grant FILE_DELETE_CHILD a file can be delete regardless of the file's * permissions. */ int smb_vop_access(vnode_t *vp, int mode, int flags, vnode_t *dir_vp, cred_t *cr) { int error = 0; if (mode == 0) return (0); error = VOP_ACCESS(vp, mode, flags, cr, NULL); if (error == 0) return (0); if ((mode & (ACE_DELETE|ACE_READ_ATTRIBUTES)) == 0 || flags != V_ACE_MASK || dir_vp == NULL) return (error); if ((mode & ACE_DELETE) != 0) { error = VOP_ACCESS(dir_vp, ACE_DELETE_CHILD, flags, cr, NULL); if (error == 0) mode &= ~ACE_DELETE; } if ((mode & ACE_READ_ATTRIBUTES) != 0) { error = VOP_ACCESS(dir_vp, ACE_LIST_DIRECTORY, flags, cr, NULL); if (error == 0) mode &= ~ACE_READ_ATTRIBUTES; } if (mode != 0) error = VOP_ACCESS(vp, mode, flags, cr, NULL); return (error); } /* * smb_vop_lookup * * dvp: directory vnode (in) * name: name of file to be looked up (in) * vpp: looked-up vnode (out) * od_name: on-disk name of file (out). * This parameter is optional. If a pointer is passed in, it * must be allocated with MAXNAMELEN bytes * rootvp: vnode of the tree root (in) * This parameter is always passed in non-NULL except at the time * of share set up. * direntflags: dirent flags returned from VOP_LOOKUP */ int smb_vop_lookup( vnode_t *dvp, char *name, vnode_t **vpp, char *od_name, int flags, int *direntflags, vnode_t *rootvp, smb_attr_t *attr, cred_t *cr) { int error = 0; int option_flags = 0; pathname_t rpn; char *np = name; char namebuf[MAXNAMELEN]; if (*name == '\0') return (EINVAL); ASSERT(vpp); *vpp = NULL; *direntflags = 0; if ((name[0] == '.') && (name[1] == '.') && (name[2] == 0)) { if (rootvp && (dvp == rootvp)) { VN_HOLD(dvp); *vpp = dvp; return (0); } if (dvp->v_flag & VROOT) { vfs_t *vfsp; vnode_t *cvp = dvp; /* * Set dvp and check for races with forced unmount * (see lookuppnvp()) */ vfsp = cvp->v_vfsp; vfs_rlock_wait(vfsp); if (((dvp = cvp->v_vfsp->vfs_vnodecovered) == NULL) || (cvp->v_vfsp->vfs_flag & VFS_UNMOUNTED)) { vfs_unlock(vfsp); return (EIO); } vfs_unlock(vfsp); } } if (flags & SMB_IGNORE_CASE) option_flags = FIGNORECASE; if (flags & SMB_CATIA) np = smb_vop_catia_v5tov4(name, namebuf, sizeof (namebuf)); pn_alloc(&rpn); /* * Easier to not have junk in rpn, as not every FS type * will necessarily fill that in for us. */ bzero(rpn.pn_buf, rpn.pn_bufsize); error = VOP_LOOKUP(dvp, np, vpp, NULL, option_flags, NULL, cr, &smb_ct, direntflags, &rpn); if (error == 0) { if (od_name) { bzero(od_name, MAXNAMELEN); if ((option_flags & FIGNORECASE) != 0 && rpn.pn_buf[0] != '\0') np = rpn.pn_buf; else np = name; if (flags & SMB_CATIA) smb_vop_catia_v4tov5(np, od_name, MAXNAMELEN); else (void) strlcpy(od_name, np, MAXNAMELEN); } if (attr != NULL) { attr->sa_mask = SMB_AT_ALL; (void) smb_vop_getattr(*vpp, NULL, attr, 0, zone_kcred()); } } pn_free(&rpn); return (error); } int smb_vop_create(vnode_t *dvp, char *name, smb_attr_t *attr, vnode_t **vpp, int flags, cred_t *cr, vsecattr_t *vsap) { int error; int option_flags = 0; xvattr_t xvattr; vattr_t *vap; char *np = name; char namebuf[MAXNAMELEN]; if (flags & SMB_IGNORE_CASE) option_flags = FIGNORECASE; attr->sa_vattr.va_mask = 0; if (vfs_has_feature(dvp->v_vfsp, VFSFT_XVATTR)) { smb_vop_setup_xvattr(attr, &xvattr); vap = &xvattr.xva_vattr; } else { smb_sa_to_va_mask(attr->sa_mask, &attr->sa_vattr.va_mask); vap = &attr->sa_vattr; } if (flags & SMB_CATIA) { np = smb_vop_catia_v5tov4(name, namebuf, sizeof (namebuf)); if (strchr(np, '/') != NULL) return (EILSEQ); } error = VOP_CREATE(dvp, np, vap, EXCL, attr->sa_vattr.va_mode, vpp, cr, option_flags, &smb_ct, vsap); /* * One could argue that filesystems should obey the size * if specified in the create attributes. Unfortunately, * they only appear to let you truncate the size to zero. * SMB needs to set a non-zero size, so work-around. */ if (error == 0 && *vpp != NULL && (vap->va_mask & AT_SIZE) != 0 && vap->va_size > 0) { vattr_t ta = *vap; ta.va_mask = AT_SIZE; (void) VOP_SETATTR(*vpp, &ta, 0, cr, &smb_ct); } return (error); } int smb_vop_remove(vnode_t *dvp, char *name, int flags, cred_t *cr) { int error; int option_flags = 0; char *np = name; char namebuf[MAXNAMELEN]; if (flags & SMB_IGNORE_CASE) option_flags = FIGNORECASE; if (flags & SMB_CATIA) np = smb_vop_catia_v5tov4(name, namebuf, sizeof (namebuf)); error = VOP_REMOVE(dvp, np, cr, &smb_ct, option_flags); return (error); } /* * smb_vop_link(target-dir-vp, source-file-vp, target-name) * * Create a link - same tree (identical TID) only. */ int smb_vop_link(vnode_t *to_dvp, vnode_t *from_vp, char *to_name, int flags, cred_t *cr) { int option_flags = 0; char *np, *buf; int rc; if (flags & SMB_IGNORE_CASE) option_flags = FIGNORECASE; if (flags & SMB_CATIA) { buf = kmem_zalloc(MAXNAMELEN, KM_SLEEP); np = smb_vop_catia_v5tov4(to_name, buf, MAXNAMELEN); if (strchr(np, '/') != NULL) { kmem_free(buf, MAXNAMELEN); return (EILSEQ); } rc = VOP_LINK(to_dvp, from_vp, np, cr, &smb_ct, option_flags); kmem_free(buf, MAXNAMELEN); return (rc); } rc = VOP_LINK(to_dvp, from_vp, to_name, cr, &smb_ct, option_flags); return (rc); } /* * smb_vop_rename() * * The rename is for files in the same tree (identical TID) only. */ int smb_vop_rename(vnode_t *from_dvp, char *from_name, vnode_t *to_dvp, char *to_name, int flags, cred_t *cr) { int error; int option_flags = 0; char *from, *to, *fbuf, *tbuf; if (flags & SMB_IGNORE_CASE) option_flags = FIGNORECASE; if (flags & SMB_CATIA) { tbuf = kmem_zalloc(MAXNAMELEN, KM_SLEEP); to = smb_vop_catia_v5tov4(to_name, tbuf, MAXNAMELEN); if (strchr(to, '/') != NULL) { kmem_free(tbuf, MAXNAMELEN); return (EILSEQ); } fbuf = kmem_zalloc(MAXNAMELEN, KM_SLEEP); from = smb_vop_catia_v5tov4(from_name, fbuf, MAXNAMELEN); error = VOP_RENAME(from_dvp, from, to_dvp, to, cr, &smb_ct, option_flags); kmem_free(tbuf, MAXNAMELEN); kmem_free(fbuf, MAXNAMELEN); return (error); } error = VOP_RENAME(from_dvp, from_name, to_dvp, to_name, cr, &smb_ct, option_flags); return (error); } int smb_vop_mkdir(vnode_t *dvp, char *name, smb_attr_t *attr, vnode_t **vpp, int flags, cred_t *cr, vsecattr_t *vsap) { int error; int option_flags = 0; xvattr_t xvattr; vattr_t *vap; char *np = name; char namebuf[MAXNAMELEN]; if (flags & SMB_IGNORE_CASE) option_flags = FIGNORECASE; attr->sa_vattr.va_mask = 0; if (vfs_has_feature(dvp->v_vfsp, VFSFT_XVATTR)) { smb_vop_setup_xvattr(attr, &xvattr); vap = &xvattr.xva_vattr; } else { smb_sa_to_va_mask(attr->sa_mask, &attr->sa_vattr.va_mask); vap = &attr->sa_vattr; } if (flags & SMB_CATIA) { np = smb_vop_catia_v5tov4(name, namebuf, sizeof (namebuf)); if (strchr(np, '/') != NULL) return (EILSEQ); } error = VOP_MKDIR(dvp, np, vap, vpp, cr, &smb_ct, option_flags, vsap); return (error); } /* * smb_vop_rmdir() * * Only simple rmdir supported, consistent with NT semantics * (can only remove an empty directory). * * The third argument to VOP_RMDIR is the current directory of * the process. It allows rmdir wants to EINVAL if one tries to * remove ".". Since SMB servers do not know what their clients' * current directories are, we fake it by supplying a vnode known * to exist and illegal to remove (rootdir). */ int smb_vop_rmdir(vnode_t *dvp, char *name, int flags, cred_t *cr) { int error; int option_flags = 0; char *np = name; char namebuf[MAXNAMELEN]; if (flags & SMB_IGNORE_CASE) option_flags = FIGNORECASE; if (flags & SMB_CATIA) np = smb_vop_catia_v5tov4(name, namebuf, sizeof (namebuf)); error = VOP_RMDIR(dvp, np, rootdir, cr, &smb_ct, option_flags); return (error); } int smb_vop_commit(vnode_t *vp, cred_t *cr) { return (VOP_FSYNC(vp, 1, cr, &smb_ct)); } /* * Some code in smb_node.c needs to know which DOS attributes * we can actually store. Let's define a mask here of all the * DOS attribute flags supported by the following function. */ const uint32_t smb_vop_dosattr_settable = FILE_ATTRIBUTE_ARCHIVE | FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_OFFLINE | FILE_ATTRIBUTE_SPARSE_FILE; static void smb_vop_setup_xvattr(smb_attr_t *smb_attr, xvattr_t *xvattr) { xoptattr_t *xoap = NULL; uint_t xva_mask; /* * Initialize xvattr, including bzero */ xva_init(xvattr); xoap = xva_getxoptattr(xvattr); ASSERT(xoap); /* * Copy caller-specified classic attributes to xvattr. * First save xvattr's mask (set in xva_init()), which * contains AT_XVATTR. This is |'d in later if needed. */ xva_mask = xvattr->xva_vattr.va_mask; xvattr->xva_vattr = smb_attr->sa_vattr; smb_sa_to_va_mask(smb_attr->sa_mask, &xvattr->xva_vattr.va_mask); /* * Do not set ctime (only the file system can do it) */ xvattr->xva_vattr.va_mask &= ~AT_CTIME; if (smb_attr->sa_mask & SMB_AT_DOSATTR) { /* * "|" in the original xva_mask, which contains * AT_XVATTR */ xvattr->xva_vattr.va_mask |= xva_mask; XVA_SET_REQ(xvattr, XAT_ARCHIVE); XVA_SET_REQ(xvattr, XAT_SYSTEM); XVA_SET_REQ(xvattr, XAT_READONLY); XVA_SET_REQ(xvattr, XAT_HIDDEN); XVA_SET_REQ(xvattr, XAT_OFFLINE); XVA_SET_REQ(xvattr, XAT_SPARSE); /* * smb_attr->sa_dosattr: If a given bit is not set, * that indicates that the corresponding field needs * to be updated with a "0" value. This is done * implicitly as the xoap->xoa_* fields were bzero'd. */ if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_ARCHIVE) xoap->xoa_archive = 1; if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_SYSTEM) xoap->xoa_system = 1; if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_READONLY) xoap->xoa_readonly = 1; if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_HIDDEN) xoap->xoa_hidden = 1; if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_OFFLINE) xoap->xoa_offline = 1; if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_SPARSE_FILE) xoap->xoa_sparse = 1; } if (smb_attr->sa_mask & SMB_AT_CRTIME) { /* * "|" in the original xva_mask, which contains * AT_XVATTR */ xvattr->xva_vattr.va_mask |= xva_mask; XVA_SET_REQ(xvattr, XAT_CREATETIME); xoap->xoa_createtime = smb_attr->sa_crtime; } } /* * smb_vop_readdir() * * Collects an SMB_MINLEN_RDDIR_BUF "page" of directory entries. * The directory entries are returned in an fs-independent format by the * underlying file system. That is, the "page" of information returned is * not literally stored on-disk in the format returned. * If the file system supports extended directory entries (has features * VFSFT_DIRENTFLAGS), set V_RDDIR_ENTFLAGS to cause the buffer to be * filled with edirent_t structures, instead of dirent64_t structures. * If the file system supports access based enumeration (abe), set * V_RDDIR_ACCFILTER to filter directory entries based on user cred. */ int smb_vop_readdir(vnode_t *vp, uint32_t offset, void *buf, int *count, int *eof, uint32_t rddir_flag, cred_t *cr) { int error = 0; int flags = 0; int rdirent_size; struct uio auio; struct iovec aiov; if (vp->v_type != VDIR) return (ENOTDIR); if ((rddir_flag & SMB_EDIRENT) != 0 && vfs_has_feature(vp->v_vfsp, VFSFT_DIRENTFLAGS)) { flags |= V_RDDIR_ENTFLAGS; rdirent_size = sizeof (edirent_t); } else { rdirent_size = sizeof (dirent64_t); } if (*count < rdirent_size) return (EINVAL); if (rddir_flag & SMB_ABE) flags |= V_RDDIR_ACCFILTER; aiov.iov_base = buf; aiov.iov_len = *count; auio.uio_iov = &aiov; auio.uio_iovcnt = 1; auio.uio_loffset = (uint64_t)offset; auio.uio_segflg = UIO_SYSSPACE; auio.uio_extflg = UIO_COPY_DEFAULT; auio.uio_resid = *count; auio.uio_fmode = 0; (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, &smb_ct); error = VOP_READDIR(vp, &auio, cr, eof, &smb_ct, flags); VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, &smb_ct); if (error == 0) *count = *count - auio.uio_resid; return (error); } /* * smb_sa_to_va_mask * * Set va_mask by running through the SMB_AT_* #define's and * setting those bits that correspond to the SMB_AT_* bits * set in sa_mask. */ void smb_sa_to_va_mask(uint_t sa_mask, uint_t *va_maskp) { int i; uint_t smask; smask = (sa_mask); for (i = SMB_AT_TYPE; (i < SMB_AT_MAX) && (smask != 0); ++i) { if (smask & 1) *(va_maskp) |= smb_attrmap[i]; smask >>= 1; } } /* * smb_vop_stream_lookup() * * The name returned in od_name is the on-disk name of the stream with the * SMB_STREAM_PREFIX stripped off. od_name should be allocated to MAXNAMELEN * by the caller. */ int smb_vop_stream_lookup( vnode_t *fvp, char *stream_name, vnode_t **vpp, char *od_name, vnode_t **xattrdirvpp, int flags, vnode_t *rootvp, cred_t *cr) { char *solaris_stream_name; char *name; int error, tmpflgs; if ((error = smb_vop_lookup_xattrdir(fvp, xattrdirvpp, LOOKUP_XATTR | CREATE_XATTR_DIR, cr)) != 0) return (error); /* * Prepend SMB_STREAM_PREFIX to stream name */ solaris_stream_name = kmem_alloc(MAXNAMELEN, KM_SLEEP); (void) snprintf(solaris_stream_name, MAXNAMELEN, "%s%s", SMB_STREAM_PREFIX, stream_name); /* * "name" will hold the on-disk name returned from smb_vop_lookup * for the stream, including the SMB_STREAM_PREFIX. */ name = kmem_zalloc(MAXNAMELEN, KM_SLEEP); if ((error = smb_vop_lookup(*xattrdirvpp, solaris_stream_name, vpp, name, flags, &tmpflgs, rootvp, NULL, cr)) != 0) { VN_RELE(*xattrdirvpp); } else { (void) strlcpy(od_name, &(name[SMB_STREAM_PREFIX_LEN]), MAXNAMELEN); } kmem_free(solaris_stream_name, MAXNAMELEN); kmem_free(name, MAXNAMELEN); return (error); } int smb_vop_stream_create(vnode_t *fvp, char *stream_name, smb_attr_t *attr, vnode_t **vpp, vnode_t **xattrdirvpp, int flags, cred_t *cr) { char *solaris_stream_name; int error; if ((error = smb_vop_lookup_xattrdir(fvp, xattrdirvpp, LOOKUP_XATTR | CREATE_XATTR_DIR, cr)) != 0) return (error); /* * Prepend SMB_STREAM_PREFIX to stream name */ solaris_stream_name = kmem_alloc(MAXNAMELEN, KM_SLEEP); (void) snprintf(solaris_stream_name, MAXNAMELEN, "%s%s", SMB_STREAM_PREFIX, stream_name); if ((error = smb_vop_create(*xattrdirvpp, solaris_stream_name, attr, vpp, flags, cr, NULL)) != 0) VN_RELE(*xattrdirvpp); kmem_free(solaris_stream_name, MAXNAMELEN); return (error); } int smb_vop_stream_remove(vnode_t *vp, char *stream_name, int flags, cred_t *cr) { char *solaris_stream_name; vnode_t *xattrdirvp; int error; error = smb_vop_lookup_xattrdir(vp, &xattrdirvp, LOOKUP_XATTR, cr); if (error != 0) return (error); /* * Prepend SMB_STREAM_PREFIX to stream name */ solaris_stream_name = kmem_alloc(MAXNAMELEN, KM_SLEEP); (void) snprintf(solaris_stream_name, MAXNAMELEN, "%s%s", SMB_STREAM_PREFIX, stream_name); /* XXX might have to use kcred */ error = smb_vop_remove(xattrdirvp, solaris_stream_name, flags, cr); kmem_free(solaris_stream_name, MAXNAMELEN); VN_RELE(xattrdirvp); return (error); } int smb_vop_lookup_xattrdir(vnode_t *fvp, vnode_t **xattrdirvpp, int flags, cred_t *cr) { int error; error = VOP_LOOKUP(fvp, "", xattrdirvpp, NULL, flags, NULL, cr, &smb_ct, NULL, NULL); return (error); } /* * smb_vop_traverse_check() * * This function checks to see if the passed-in vnode has a file system * mounted on it. If it does, the mount point is "traversed" and the * vnode for the root of the file system is returned. */ int smb_vop_traverse_check(vnode_t **vpp) { int error; if (vn_mountedvfs(*vpp) == 0) return (0); /* * traverse() may return a different held vnode, even in the error case. * If it returns a different vnode, it will have released the original. */ error = traverse(vpp); return (error); } int /*ARGSUSED*/ smb_vop_statfs(vnode_t *vp, struct statvfs64 *statp, cred_t *cr) { int error; error = VFS_STATVFS(vp->v_vfsp, statp); return (error); } /* * smb_vop_acl_read * * Reads the ACL of the specified file into 'aclp'. * acl_type is the type of ACL which the filesystem supports. * * Caller has to free the allocated memory for aclp by calling * acl_free(). */ int smb_vop_acl_read(vnode_t *vp, acl_t **aclp, int flags, acl_type_t acl_type, cred_t *cr) { int error; vsecattr_t vsecattr; ASSERT(vp); ASSERT(aclp); *aclp = NULL; bzero(&vsecattr, sizeof (vsecattr_t)); switch (acl_type) { case ACLENT_T: vsecattr.vsa_mask = VSA_ACL | VSA_ACLCNT | VSA_DFACL | VSA_DFACLCNT; break; case ACE_T: vsecattr.vsa_mask = VSA_ACE | VSA_ACECNT | VSA_ACE_ACLFLAGS; break; default: return (EINVAL); } if ((error = VOP_GETSECATTR(vp, &vsecattr, flags, cr, &smb_ct)) != 0) return (error); *aclp = smb_fsacl_from_vsa(&vsecattr, acl_type); if (vp->v_type == VDIR) (*aclp)->acl_flags |= ACL_IS_DIR; return (0); } /* * smb_vop_acl_write * * Writes the given ACL in aclp for the specified file. */ int smb_vop_acl_write(vnode_t *vp, acl_t *aclp, int flags, cred_t *cr) { int error; vsecattr_t vsecattr; int aclbsize; ASSERT(vp); ASSERT(aclp); error = smb_fsacl_to_vsa(aclp, &vsecattr, &aclbsize); if (error == 0) { (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, &smb_ct); error = VOP_SETSECATTR(vp, &vsecattr, flags, cr, &smb_ct); VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, &smb_ct); } if (aclbsize && vsecattr.vsa_aclentp) kmem_free(vsecattr.vsa_aclentp, aclbsize); return (error); } /* * smb_vop_acl_type * * Determines the ACL type for the given vnode. * ACLENT_T is a Posix ACL and ACE_T is a ZFS ACL. */ acl_type_t smb_vop_acl_type(vnode_t *vp) { int error; ulong_t whichacl; error = VOP_PATHCONF(vp, _PC_ACL_ENABLED, &whichacl, zone_kcred(), NULL); if (error != 0) { /* * If we got an error, then the filesystem * likely does not understand the _PC_ACL_ENABLED * pathconf. In this case, we fall back to trying * POSIX-draft (aka UFS-style) ACLs. */ whichacl = _ACL_ACLENT_ENABLED; } if (!(whichacl & (_ACL_ACE_ENABLED | _ACL_ACLENT_ENABLED))) { /* * If the file system supports neither ACE nor * ACLENT ACLs we will fall back to UFS-style ACLs * like we did above if there was an error upon * calling VOP_PATHCONF. * * ACE and ACLENT type ACLs are the only interfaces * supported thus far. If any other bits are set on * 'whichacl' upon return from VOP_PATHCONF, we will * ignore them. */ whichacl = _ACL_ACLENT_ENABLED; } if (whichacl == _ACL_ACLENT_ENABLED) return (ACLENT_T); return (ACE_T); } static const int zfs_perms[] = { ACE_READ_DATA, ACE_WRITE_DATA, ACE_APPEND_DATA, ACE_READ_NAMED_ATTRS, ACE_WRITE_NAMED_ATTRS, ACE_EXECUTE, ACE_DELETE_CHILD, ACE_READ_ATTRIBUTES, ACE_WRITE_ATTRIBUTES, ACE_DELETE, ACE_READ_ACL, ACE_WRITE_ACL, ACE_WRITE_OWNER, ACE_SYNCHRONIZE }; static const int unix_perms[] = { VREAD, VWRITE, VEXEC }; /* * smb_vop_eaccess * * Returns the effective permission of the given credential for the * specified object. * * This is just a workaround. We need VFS/FS support for this. */ void smb_vop_eaccess(vnode_t *vp, int *mode, int flags, vnode_t *dir_vp, cred_t *cr) { int error, i; int pnum; *mode = 0; if (flags == V_ACE_MASK) { pnum = sizeof (zfs_perms) / sizeof (int); for (i = 0; i < pnum; i++) { error = smb_vop_access(vp, zfs_perms[i], flags, dir_vp, cr); if (error == 0) *mode |= zfs_perms[i]; } } else { pnum = sizeof (unix_perms) / sizeof (int); for (i = 0; i < pnum; i++) { error = smb_vop_access(vp, unix_perms[i], flags, dir_vp, cr); if (error == 0) *mode |= unix_perms[i]; } } } /* * See comments for smb_fsop_shrlock() */ int smb_vop_shrlock(vnode_t *vp, uint32_t uniq_fid, uint32_t desired_access, uint32_t share_access, cred_t *cr) { struct shrlock shr; struct shr_locowner shr_own; short new_access = 0; short deny = 0; int flag = 0; int cmd; /* * share locking is not supported for non-regular * objects in NBMAND mode. */ if (nbl_need_check(vp)) { if (vp->v_type != VREG) return (0); cmd = F_SHARE_NBMAND; } else { cmd = F_SHARE; } if ((desired_access & FILE_DATA_ALL) == 0) { /* metadata access only */ new_access |= F_MDACC; } else { if (desired_access & (ACE_READ_DATA | ACE_EXECUTE)) { new_access |= F_RDACC; flag |= FREAD; } if (desired_access & (ACE_WRITE_DATA | ACE_APPEND_DATA | ACE_ADD_FILE)) { new_access |= F_WRACC; flag |= FWRITE; } if (SMB_DENY_READ(share_access)) { deny |= F_RDDNY; } if (SMB_DENY_WRITE(share_access)) { deny |= F_WRDNY; } if (cmd == F_SHARE_NBMAND) { if (desired_access & ACE_DELETE) new_access |= F_RMACC; if (SMB_DENY_DELETE(share_access)) { deny |= F_RMDNY; } } } shr.s_access = new_access; shr.s_deny = deny; shr.s_sysid = smb_ct.cc_sysid; shr.s_pid = uniq_fid; shr.s_own_len = sizeof (shr_own); shr.s_owner = (caddr_t)&shr_own; shr_own.sl_id = shr.s_sysid; shr_own.sl_pid = shr.s_pid; return (VOP_SHRLOCK(vp, cmd, &shr, flag, cr, NULL)); } int smb_vop_unshrlock(vnode_t *vp, uint32_t uniq_fid, cred_t *cr) { struct shrlock shr; struct shr_locowner shr_own; /* * share locking is not supported for non-regular * objects in NBMAND mode. */ if (nbl_need_check(vp) && (vp->v_type != VREG)) return (0); /* * For s_access and s_deny, we do not need to pass in the original * values. */ shr.s_access = 0; shr.s_deny = 0; shr.s_sysid = smb_ct.cc_sysid; shr.s_pid = uniq_fid; shr.s_own_len = sizeof (shr_own); shr.s_owner = (caddr_t)&shr_own; shr_own.sl_id = shr.s_sysid; shr_own.sl_pid = shr.s_pid; return (VOP_SHRLOCK(vp, F_UNSHARE, &shr, 0, cr, NULL)); } /* * Note about mandatory vs advisory locks: * * The SMB server really should always request mandatory locks, and * if the file system does not support them, the SMB server should * just tell the client it could not get the lock. If we were to * tell the SMB client "you got the lock" when what they really * got was only an advisory lock, we would be lying to the client * about their having exclusive access to the locked range, which * could easily lead to data corruption. If someone really wants * the (dangerous) behavior they can set: smb_allow_advisory_locks */ int smb_vop_frlock(vnode_t *vp, cred_t *cr, int flag, flock64_t *bf) { flk_callback_t flk_cb; int cmd = F_SETLK_NBMAND; if (smb_allow_advisory_locks != 0 && !nbl_need_check(vp)) { /* * The file system does not support nbmand, and * smb_allow_advisory_locks is enabled. (danger!) */ cmd = F_SETLK; } flk_init_callback(&flk_cb, smb_lock_frlock_callback, NULL); return (VOP_FRLOCK(vp, cmd, bf, flag, 0, &flk_cb, cr, &smb_ct)); } static callb_cpr_t * /* ARGSUSED */ smb_lock_frlock_callback(flk_cb_when_t when, void *error) { return (0); } /* * smb_vop_catia_init_v4_lookup * Initialize mapping between wide characters in the range from * 0x00A4 to 0x00FF and their UNIX (v4) equivalent (wide character). * Indexed by the decimal value of the wide character (164-255) * with an offset of -164. */ static void smb_vop_catia_init_v4_lookup() { int i, idx, offset = SMB_CATIA_V4_LOOKUP_LOW; for (i = 0; i < SMB_CATIA_V4_LOOKUP_MAX; i++) smb_catia_v4_lookup[i] = (smb_wchar_t)(i + offset); for (i = 0; i < SMB_CATIA_NUM_MAPS; i++) { idx = (int)catia_maps[i].winchar - offset; smb_catia_v4_lookup[idx] = (smb_wchar_t)catia_maps[i].unixchar; } } /* * smb_vop_catia_init_v5_lookup * Initialize mapping between UNIX ASCII (v4) characters and equivalent * or translated wide characters. * Indexed by the decimal value of the ASCII character (0-127). */ static void smb_vop_catia_init_v5_lookup() { int i, idx; for (i = 0; i < SMB_CATIA_V5_LOOKUP_MAX; i++) smb_catia_v5_lookup[i] = (smb_wchar_t)i; for (i = 0; i < SMB_CATIA_NUM_MAPS; i++) { idx = (int)catia_maps[i].unixchar; smb_catia_v5_lookup[idx] = catia_maps[i].winchar; } } static void smb_vop_catia_init() { smb_vop_catia_init_v4_lookup(); smb_vop_catia_init_v5_lookup(); } /* * smb_vop_catia_v5tov4 * (windows (v5) to unix (v4)) * * Traverse each character in the given source filename and convert the * multibyte that is equivalent to any special Windows character listed * in the catia_maps table to the Unix ASCII character if any is * encountered in the filename. The translated name is returned in buf. * * If an error occurs the conversion terminates and name is returned, * otherwise buf is returned. */ char * smb_vop_catia_v5tov4(char *name, char *buf, int buflen) { int v4_idx, numbytes, inc; int space_left = buflen - 1; /* one byte reserved for null */ uint32_t wc; char mbstring[MTS_MB_CHAR_MAX]; char *p, *src = name, *dst = buf; ASSERT(name); ASSERT(buf); if (!buf || !name) return (name); bzero(buf, buflen); while (*src) { if ((numbytes = smb_mbtowc(&wc, src, MTS_MB_CHAR_MAX)) < 0) return (name); if (wc < SMB_CATIA_V4_LOOKUP_LOW || wc > SMB_CATIA_V4_LOOKUP_UPPER) { inc = numbytes; p = src; } else { /* Lookup required. */ v4_idx = (int)wc - SMB_CATIA_V4_LOOKUP_LOW; inc = smb_wctomb(mbstring, smb_catia_v4_lookup[v4_idx]); p = mbstring; } if (space_left < inc) return (name); (void) strncpy(dst, p, inc); dst += inc; space_left -= inc; src += numbytes; } return (buf); } /* * smb_vop_catia_v4tov5 * (unix (v4) to windows (v5)) * * Traverse each character in the given filename 'srcbuf' and convert * the special Unix character that is listed in the catia_maps table to * the UTF-8 encoding of the corresponding Windows character if any is * encountered in the filename. * * The translated name is returned in buf. * If an error occurs the conversion terminates and the original name * is returned in buf. */ void smb_vop_catia_v4tov5(char *name, char *buf, int buflen) { int v5_idx, numbytes; int space_left = buflen - 1; /* one byte reserved for null */ uint32_t wc; char mbstring[MTS_MB_CHAR_MAX]; char *src = name, *dst = buf; ASSERT(name); ASSERT(buf); if (!buf || !name) return; (void) bzero(buf, buflen); while (*src) { if (smb_isascii(*src)) { /* Lookup required */ v5_idx = (int)*src++; numbytes = smb_wctomb(mbstring, smb_catia_v5_lookup[v5_idx]); if (space_left < numbytes) break; (void) strncpy(dst, mbstring, numbytes); } else { if ((numbytes = smb_mbtowc(&wc, src, MTS_MB_CHAR_MAX)) < 0) break; if (space_left < numbytes) break; (void) strncpy(dst, src, numbytes); src += numbytes; } dst += numbytes; space_left -= numbytes; } if (*src) (void) strlcpy(buf, name, buflen); }