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