Line data    Source code

       1             : /*
       2             :  * Copyright (c) 2005 Kungliga Tekniska Högskolan
       3             :  * (Royal Institute of Technology, Stockholm, Sweden).
       4             :  * All rights reserved.
       5             :  *
       6             :  * Redistribution and use in source and binary forms, with or without
       7             :  * modification, are permitted provided that the following conditions
       8             :  * are met:
       9             :  *
      10             :  * 1. Redistributions of source code must retain the above copyright
      11             :  *    notice, this list of conditions and the following disclaimer.
      12             :  *
      13             :  * 2. Redistributions in binary form must reproduce the above copyright
      14             :  *    notice, this list of conditions and the following disclaimer in the
      15             :  *    documentation and/or other materials provided with the distribution.
      16             :  *
      17             :  * 3. Neither the name of the Institute nor the names of its contributors
      18             :  *    may be used to endorse or promote products derived from this software
      19             :  *    without specific prior written permission.
      20             :  *
      21             :  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
      22             :  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      23             :  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
      24             :  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
      25             :  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
      26             :  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
      27             :  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      28             :  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
      29             :  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
      30             :  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
      31             :  * SUCH DAMAGE.
      32             :  */
      33             : 
      34             : #include <config.h>
      35             : 
      36             : #include "roken.h"
      37             : 
      38             : /*
      39             :  * Write datablob to a filename, don't care about errors.
      40             :  */
      41             : 
      42             : ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
      43           0 : rk_dumpdata (const char *filename, const void *buf, size_t size)
      44             : {
      45             :     int fd;
      46             : 
      47           0 :     fd = open(filename, O_WRONLY|O_TRUNC|O_CREAT, 0640);
      48           0 :     if (fd < 0)
      49           0 :         return;
      50           0 :     net_write(fd, buf, size);
      51           0 :     close(fd);
      52             : }
      53             : 
      54             : /*
      55             :  * Read all data from a filename, care about errors.
      56             :  */
      57             : 
      58             : ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
      59           0 : rk_undumpdata(const char *filename, void **buf, size_t *size)
      60             : {
      61             :     struct stat sb;
      62             :     int fd, ret;
      63             :     ssize_t sret;
      64             : 
      65           0 :     *buf = NULL;
      66             : 
      67           0 :     fd = open(filename, O_RDONLY, 0);
      68           0 :     if (fd < 0)
      69           0 :         return errno;
      70           0 :     if (fstat(fd, &sb) != 0){
      71           0 :         ret = errno;
      72           0 :         goto out;
      73             :     }
      74           0 :     *buf = malloc(sb.st_size);
      75           0 :     if (*buf == NULL) {
      76           0 :         ret = ENOMEM;
      77           0 :         goto out;
      78             :     }
      79           0 :     *size = sb.st_size;
      80             : 
      81           0 :     sret = net_read(fd, *buf, *size);
      82           0 :     if (sret < 0)
      83           0 :         ret = errno;
      84           0 :     else if (sret != (ssize_t)*size)
      85           0 :         ret = EINVAL;
      86             :     else
      87           0 :         ret = 0;
      88             : 
      89           0 :   out:
      90           0 :     if (ret) {
      91           0 :         free(*buf);
      92           0 :         *buf = NULL;
      93             :     }
      94           0 :     close(fd);
      95           0 :     return ret;
      96             : }