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100 lines
2.4 KiB
100 lines
2.4 KiB
/*
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This file is part of ethash.
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ethash is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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ethash is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with ethash. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file io_win32.c
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* @author Lefteris Karapetsas <lefteris@ethdev.com>
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* @date 2015
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*/
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#include "io.h"
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#include <direct.h>
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#include <errno.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <shlobj.h>
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FILE* ethash_fopen(char const* file_name, char const* mode)
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{
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FILE* f;
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return fopen_s(&f, file_name, mode) == 0 ? f : NULL;
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}
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char* ethash_strncat(char* dest, size_t dest_size, char const* src, size_t count)
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{
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return strncat_s(dest, dest_size, src, count) == 0 ? dest : NULL;
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}
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bool ethash_mkdir(char const* dirname)
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{
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int rc = _mkdir(dirname);
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return rc != -1 || errno == EEXIST;
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}
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int ethash_fileno(FILE* f)
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{
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return _fileno(f);
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}
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char* ethash_io_create_filename(
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char const* dirname,
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char const* filename,
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size_t filename_length
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)
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{
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size_t dirlen = strlen(dirname);
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size_t dest_size = dirlen + filename_length + 1;
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if (dirname[dirlen] != '\\' || dirname[dirlen] != '/') {
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dest_size += 1;
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}
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char* name = malloc(dest_size);
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if (!name) {
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return NULL;
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}
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name[0] = '\0';
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ethash_strncat(name, dest_size, dirname, dirlen);
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if (dirname[dirlen] != '\\' || dirname[dirlen] != '/') {
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ethash_strncat(name, dest_size, "\\", 1);
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}
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ethash_strncat(name, dest_size, filename, filename_length);
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return name;
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}
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bool ethash_file_size(FILE* f, size_t* ret_size)
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{
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struct _stat st;
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int fd;
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if ((fd = _fileno(f)) == -1 || _fstat(fd, &st) != 0) {
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return false;
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}
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*ret_size = st.st_size;
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return true;
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}
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bool ethash_get_default_dirname(char* strbuf, size_t buffsize)
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{
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static const char dir_suffix[] = "Ethash\\";
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strbuf[0] = '\0';
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if (!SUCCEEDED(SHGetFolderPathA(NULL, CSIDL_LOCAL_APPDATA, NULL, 0, (CHAR*)strbuf))) {
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return false;
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}
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if (!ethash_strncat(strbuf, buffsize, "\\", 1)) {
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return false;
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}
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return ethash_strncat(strbuf, buffsize, dir_suffix, sizeof(dir_suffix));
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}
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