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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2018 Jan Stancek <jstancek@redhat.com>
*/
#include <limits.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#define TST_NO_DEFAULT_MAIN
#include "tst_test.h"
#include "tst_sys_conf.h"
static struct tst_sys_conf *save_restore_data;
void tst_sys_conf_dump(void)
{
struct tst_sys_conf *i;
for (i = save_restore_data; i; i = i->next)
tst_res(TINFO, "%s = %s", i->path, i->value);
}
int tst_sys_conf_save_str(const char *path, const char *value)
{
struct tst_sys_conf *n = SAFE_MALLOC(sizeof(*n));
strncpy(n->path, path, sizeof(n->path)-1);
strncpy(n->value, value, sizeof(n->value)-1);
n->path[sizeof(n->path) - 1] = 0;
n->value[sizeof(n->value) - 1] = 0;
n->next = save_restore_data;
save_restore_data = n;
return 0;
}
int tst_sys_conf_save(const char *path)
{
char line[PATH_MAX];
FILE *fp;
void *ret;
char flag;
if (!path)
tst_brk(TBROK, "path is empty");
flag = path[0];
if (flag == '?' || flag == '!')
path++;
if (access(path, F_OK) != 0) {
switch (flag) {
case '?':
tst_res(TINFO, "Path not found: '%s'", path);
break;
case '!':
tst_brk(TBROK|TERRNO, "Path not found: '%s'", path);
break;
default:
tst_brk(TCONF|TERRNO, "Path not found: '%s'", path);
}
return 1;
}
fp = fopen(path, "r");
if (fp == NULL) {
if (flag == '?')
return 1;
tst_brk(TBROK | TERRNO, "Failed to open FILE '%s' for reading",
path);
return 1;
}
ret = fgets(line, sizeof(line), fp);
fclose(fp);
if (ret == NULL) {
if (flag == '?')
return 1;
tst_brk(TBROK | TERRNO, "Failed to read anything from '%s'",
path);
}
return tst_sys_conf_save_str(path, line);
}
void tst_sys_conf_restore(int verbose)
{
struct tst_sys_conf *i;
for (i = save_restore_data; i; i = i->next) {
if (verbose) {
tst_res(TINFO, "Restoring conf.: %s -> %s\n",
i->path, i->value);
}
FILE_PRINTF(i->path, "%s", i->value);
}
}
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