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common.c
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common.c
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/*
* common.c - Common things for all utilities
*
* Copyright (c) 2017 Huawei. All Rights Reserved.
* Author: zhangyi (F) <[email protected]>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdarg.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "common.h"
#include "config.h"
const char *program_name;
/* #define DEBUG 1 */
#ifdef DEBUG
void print_debug(char *fmtstr, ...)
{
va_list args;
va_start(args, fmtstr);
fprintf(stdout, "%s:[Debug]: ", program_name);
vfprintf(stdout, fmtstr, args);
va_end(args);
}
#else
void print_debug (char *fmtstr, ...) {}
#endif
void print_info(char *fmtstr, ...)
{
va_list args;
va_start(args, fmtstr);
vfprintf(stdout, fmtstr, args);
va_end(args);
}
void print_err(char *fmtstr, ...)
{
va_list args;
va_start(args, fmtstr);
fprintf(stderr, "%s:[Error]: ", program_name);
vfprintf(stderr, fmtstr, args);
va_end(args);
}
void *smalloc(size_t size)
{
void *new = malloc(size);
if (!new) {
print_err(_("malloc error:%s\n"), strerror(errno));
exit(1);
}
memset(new, 0, size);
return new;
}
void *srealloc(void *addr, size_t size)
{
void *re = realloc(addr, size);
if (!re) {
print_err(_("malloc error:%s\n"), strerror(errno));
exit(1);
}
return re;
}
char *sstrdup(const char *src)
{
char *dst = strdup(src);
if (!dst) {
print_err(_("strdup error:%s\n"), strerror(errno));
exit(1);
}
return dst;
}
char *sstrndup(const char *src, size_t num)
{
char *dst = strndup(src, num);
if (!dst) {
print_err(_("strndup error:%s\n"), strerror(errno));
exit(1);
}
return dst;
}
void version(void)
{
printf(_("OverlayFS Tools version %s\n"), OVERLAYFS_TOOLS_VERSION);
}