usr/src/lib/libsmbfs/smb/file.c

   1 /*
   2  * Copyright (c) 2000, Boris Popov
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *    This product includes software developed by Boris Popov.
  16  * 4. Neither the name of the author nor the names of any co-contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * $Id: file.c,v 1.4 2004/12/13 00:25:21 lindak Exp $
  33  */
  34
  35 /*
  36  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  37  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  38  * Use is subject to license terms.
  39  */
  40
  41 #include <sys/param.h>
  42 #include <sys/ioctl.h>
  43 #include <sys/time.h>
  44 #include <sys/mount.h>
  45 #include <fcntl.h>
  46 #include <ctype.h>
  47 #include <errno.h>
  48 #include <stdio.h>
  49 #include <string.h>
  50 #include <strings.h>
  51 #include <stdlib.h>
  52 #include <pwd.h>
  53 #include <grp.h>
  54 #include <unistd.h>
  55 #include <libintl.h>
  56
  57 #include <sys/types.h>
  58 #include <sys/file.h>
  59
  60 #include <netsmb/smb.h>
  61 #include <netsmb/smb_lib.h>
  62
  63 #include "private.h"
  64
  65 int
  66 smb_fh_close(int fd)
  67 {
  68         return (close(fd));
  69 }
  70
  71 int
  72 smb_fh_ntcreate(
  73         struct smb_ctx *ctx, char *path,
  74         int req_acc, int efattr, int share_acc,
  75         int open_disp, int create_opts)
  76 {
  77         smbioc_ntcreate_t ioc;
  78         int err, nmlen;
  79         int new_fd = -1;
  80         int32_t from_fd;
  81
  82         nmlen = strlen(path);
  83         if (nmlen >= SMBIOC_MAX_NAME) {
  84                 err = EINVAL;
  85                 goto errout;
  86         }
  87
  88         /*
  89          * Will represent this SMB-level open as a new
  90          * open device handle.  Get one, then duplicate
  91          * the driver session and tree bindings.
  92          */
  93         new_fd = smb_open_driver();
  94         if (new_fd < 0) {
  95                 err = errno;
  96                 goto errout;
  97         }
  98         from_fd = ctx->ct_dev_fd;
  99         if (ioctl(new_fd, SMBIOC_DUP_DEV, &from_fd) == -1) {
 100                 err = errno;
 101                 goto errout;
 102         }
 103
 104         /*
 105          * Do the SMB-level open with the new dev handle.
 106          */
 107         bzero(&ioc, sizeof (ioc));
 108         strlcpy(ioc.ioc_name, path, SMBIOC_MAX_NAME);
 109         ioc.ioc_req_acc = req_acc;
 110         ioc.ioc_efattr = efattr;
 111         ioc.ioc_share_acc = share_acc;
 112         ioc.ioc_open_disp = open_disp;
 113         ioc.ioc_creat_opts = create_opts;
 114         if (ioctl(new_fd, SMBIOC_NTCREATE, &ioc) == -1) {
 115                 err = errno;
 116                 goto errout;
 117         }
 118
 119         return (new_fd);
 120
 121 errout:
 122         if (new_fd != -1)
 123                 close(new_fd);
 124         errno = err;
 125         return (-1);
 126 }
 127
 128 /*
 129  * Conveinence wrapper for smb_fh_ntcreate
 130  * Converts Unix-style open call to NTCreate.
 131  */
 132 int
 133 smb_fh_open(struct smb_ctx *ctx, const char *path, int oflag)
 134 {
 135         int mode, open_disp, req_acc, share_acc;
 136         char *p, *ntpath = NULL;
 137         int fd = -1;
 138
 139         /*
 140          * Convert Unix path to NT (backslashes)
 141          */
 142         ntpath = strdup(path);
 143         if (ntpath == NULL)
 144                 return (-1);    /* errno was set */
 145         for (p = ntpath; *p; p++)
 146                 if (*p == '/')
 147                         *p = '\\';
 148
 149         mode = FFLAGS(oflag) & (FREAD|FWRITE);
 150
 151         /*
 152          * Compute requested access, share access.
 153          */
 154         req_acc = (
 155             STD_RIGHT_READ_CONTROL_ACCESS |
 156             STD_RIGHT_SYNCHRONIZE_ACCESS);
 157         share_acc = NTCREATEX_SHARE_ACCESS_NONE;
 158         if (mode & FREAD) {
 159                 req_acc |= (
 160                     SA_RIGHT_FILE_READ_DATA |
 161                     SA_RIGHT_FILE_READ_EA |
 162                     SA_RIGHT_FILE_READ_ATTRIBUTES);
 163                 share_acc |= NTCREATEX_SHARE_ACCESS_READ;
 164         }
 165         if (mode & FWRITE) {
 166                 req_acc |= (
 167                     SA_RIGHT_FILE_WRITE_DATA |
 168                     SA_RIGHT_FILE_APPEND_DATA |
 169                     SA_RIGHT_FILE_WRITE_EA |
 170                     SA_RIGHT_FILE_WRITE_ATTRIBUTES);
 171                 share_acc |= NTCREATEX_SHARE_ACCESS_WRITE;
 172         }
 173
 174         /*
 175          * Compute open disposition
 176          */
 177         if (oflag & O_CREAT) {
 178                 /* Creat if necessary. */
 179                 if (oflag & O_EXCL) {
 180                         /* exclusive */
 181                         open_disp = NTCREATEX_DISP_CREATE;
 182                 } else if (oflag & O_TRUNC)
 183                         open_disp = NTCREATEX_DISP_OVERWRITE_IF;
 184                 else
 185                         open_disp = NTCREATEX_DISP_OPEN_IF;
 186         } else {
 187                 /* Not creating. */
 188                 if (oflag & O_TRUNC)
 189                         open_disp = NTCREATEX_DISP_OVERWRITE;
 190                 else
 191                         open_disp = NTCREATEX_DISP_OPEN;
 192         }
 193
 194         fd = smb_fh_ntcreate(ctx, ntpath,
 195             req_acc, SMB_EFA_NORMAL, share_acc, open_disp,
 196             NTCREATEX_OPTIONS_NON_DIRECTORY_FILE);
 197
 198         free(ntpath);
 199         return (fd);
 200 }
 201
 202 int
 203 smb_fh_read(int fd, off_t offset, size_t count,
 204         char *dst)
 205 {
 206         struct smbioc_rw rwrq;
 207
 208         bzero(&rwrq, sizeof (rwrq));
 209         rwrq.ioc_fh = -1;       /* tell driver to supply this */
 210         rwrq.ioc_base = dst;
 211         rwrq.ioc_cnt = count;
 212         rwrq.ioc_offset = offset;
 213         if (ioctl(fd, SMBIOC_READ, &rwrq) == -1) {
 214                 return (-1);
 215         }
 216         return (rwrq.ioc_cnt);
 217 }
 218
 219 int
 220 smb_fh_write(int fd, off_t offset, size_t count,
 221         const char *src)
 222 {
 223         struct smbioc_rw rwrq;
 224
 225         bzero(&rwrq, sizeof (rwrq));
 226         rwrq.ioc_fh = -1;       /* tell driver to supply this */
 227         rwrq.ioc_base = (char *)src;
 228         rwrq.ioc_cnt = count;
 229         rwrq.ioc_offset = offset;
 230         if (ioctl(fd, SMBIOC_WRITE, &rwrq) == -1) {
 231                 return (-1);
 232         }
 233         return (rwrq.ioc_cnt);
 234 }
 235
 236 /*
 237  * Do a TRANSACT_NAMED_PIPE, which is basically just a
 238  * pipe write and pipe read, all in one round trip.
 239  *
 240  * tdlen, tdata describe the data to send.
 241  * rdlen, rdata on input describe the receive buffer,
 242  * and on output *rdlen is the received length.
 243  */
 244 int
 245 smb_fh_xactnp(int fd,
 246         int tdlen, const char *tdata,   /* transmit */
 247         int *rdlen, char *rdata,        /* receive */
 248         int *more)
 249 {
 250         int             err, rparamcnt;
 251         uint16_t        setup[2];
 252
 253         setup[0] = TRANS_TRANSACT_NAMED_PIPE;
 254         setup[1] = 0xFFFF; /* driver replaces this */
 255         rparamcnt = 0;
 256
 257         err = smb_t2_request(fd, 2, setup, "\\PIPE\\",
 258             0, NULL,    /* TX paramcnt, params */
 259             tdlen, (void *)tdata,
 260             &rparamcnt, NULL,   /* no RX params */
 261             rdlen, rdata, more);
 262
 263         if (err)
 264                 *rdlen = 0;
 265
 266         return (err);
 267 }