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/*
* Copyright (c) 2005 - 2006 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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.
*/
#include "hx_locl.h"
RCSID("$ID$");
int
_hx509_map_file(const char *fn, void **data, size_t *length, struct stat *rsb)
{
struct stat sb;
size_t len;
ssize_t l;
int ret;
void *d;
int fd;
*data = NULL;
*length = 0;
fd = open(fn, O_RDONLY);
if (fd < 0)
return errno;
if (fstat(fd, &sb) < 0) {
ret = errno;
close(fd);
return ret;
}
len = sb.st_size;
d = malloc(len);
if (d == NULL) {
close(fd);
return ENOMEM;
}
l = read(fd, d, len);
close(fd);
if (l < 0 || l != len) {
free(d);
return EINVAL;
}
if (rsb)
*rsb = sb;
*data = d;
*length = len;
return 0;
}
void
_hx509_unmap_file(void *data, size_t len)
{
free(data);
}
int
_hx509_write_file(const char *fn, const void *data, size_t length)
{
ssize_t sz;
const unsigned char *p = data;
int fd;
fd = open(fn, O_WRONLY|O_TRUNC|O_CREAT, 0644);
if (fd < 0)
return errno;
do {
sz = write(fd, p, length);
if (sz < 0) {
int saved_errno = errno;
close(fd);
return saved_errno;
}
if (sz == 0)
break;
length -= sz;
} while (length > 0);
if (close(fd) == -1)
return errno;
return 0;
}
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