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/*
* Copyright (C) 2004, 2007, 2011 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 2000, 2001 Internet Software Consortium.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: stdio.c,v 1.8.814.2 2011-03-05 23:52:09 tbox Exp $ */
#include <config.h>
#include <errno.h>
#include <unistd.h>
#include <isc/stdio.h>
#include <isc/stat.h>
#include "errno2result.h"
isc_result_t
isc_stdio_open(const char *filename, const char *mode, FILE **fp) {
FILE *f;
f = fopen(filename, mode);
if (f == NULL)
return (isc__errno2result(errno));
*fp = f;
return (ISC_R_SUCCESS);
}
isc_result_t
isc_stdio_close(FILE *f) {
int r;
r = fclose(f);
if (r == 0)
return (ISC_R_SUCCESS);
else
return (isc__errno2result(errno));
}
isc_result_t
isc_stdio_seek(FILE *f, long offset, int whence) {
int r;
r = fseek(f, offset, whence);
if (r == 0)
return (ISC_R_SUCCESS);
else
return (isc__errno2result(errno));
}
isc_result_t
isc_stdio_read(void *ptr, size_t size, size_t nmemb, FILE *f, size_t *nret) {
isc_result_t result = ISC_R_SUCCESS;
size_t r;
clearerr(f);
r = fread(ptr, size, nmemb, f);
if (r != nmemb) {
if (feof(f))
result = ISC_R_EOF;
else
result = isc__errno2result(errno);
}
if (nret != NULL)
*nret = r;
return (result);
}
isc_result_t
isc_stdio_write(const void *ptr, size_t size, size_t nmemb, FILE *f,
size_t *nret)
{
isc_result_t result = ISC_R_SUCCESS;
size_t r;
clearerr(f);
r = fwrite(ptr, size, nmemb, f);
if (r != nmemb)
result = isc__errno2result(errno);
if (nret != NULL)
*nret = r;
return (result);
}
isc_result_t
isc_stdio_flush(FILE *f) {
int r;
r = fflush(f);
if (r == 0)
return (ISC_R_SUCCESS);
else
return (isc__errno2result(errno));
}
isc_result_t
isc_stdio_sync(FILE *f) {
int r;
r = fsync(fileno(f));
if (r == 0)
return (ISC_R_SUCCESS);
else
return (isc__errno2result(errno));
}
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