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dlight/env.c
Henrik Hautakoski 107aae0105 env.c: free memory at exit.
Make sure the memory for the 'base' string is always free'd
when the program exits.
2012-08-09 16:00:20 +02:00

62 lines
1.5 KiB
C

/* env.c
*
* Copyright (C) 2011 Henrik Hautakoski <henrik@fiktivkod.org>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will 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 to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "error.h"
#include "buffer.h"
#include "env.h"
static char *base = NULL;
static void free_base() {
if (base)
free(base);
}
static void get_base() {
struct buffer buf = BUFFER_INIT;
char *ptr = getenv("HOME");
if (!ptr)
ptr = ".";
buffer_append_str(&buf, ptr);
buffer_append_str(&buf, "/.dlight");
base = buffer_cstr_release(&buf);
atexit(free_base);
}
const char* env_get_dir() {
if (!base)
get_base();
if (mkdir(base, 0700) < 0 && errno != EEXIST) {
fatal("Unable to create '%s': %s\n",
base, strerror(errno));
}
return base;
}