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/*
* Copyright 2020 Red Hat, Inc.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU General Public License v2 or (at your option) any later version.
*/
#include "dlm_daemon.h"
#define MAX_LINE 4096
static struct node_config nc[MAX_NODES];
static const struct node_config nc_default = {
.mark = 0,
};
int node_config_init(const char *path)
{
char line[MAX_LINE], tmp[MAX_LINE];
unsigned long mark;
FILE *file;
int nodeid;
int rv;
/* if no config file is given we assume default node configuration */
file = fopen(path, "r");
if (!file) {
log_debug("No config file %s, we assume default node configuration: mark %" PRIu32,
path, nc_default.mark);
return 0;
}
while (fgets(line, MAX_LINE, file)) {
if (line[0] == '#')
continue;
if (line[0] == '\n')
continue;
if (!strncmp(line, "node", strlen("node"))) {
rv = sscanf(line, "node id=%d mark=%s", &nodeid, tmp);
if (rv < 2) {
log_error("Invalid configuration line: %s", line);
rv = -EINVAL;
goto out;
}
/* skip invalid nodeid's */
if (nodeid <= 0 || nodeid > MAX_NODES - 1)
continue;
mark = strtoul(tmp, NULL, 0);
if (mark == ULONG_MAX) {
log_error("Failed to pars mark value %s will use %" PRIu32,
tmp, nc_default.mark);
mark = nc_default.mark;
}
nc[nodeid].mark = mark;
log_debug("parsed node config id=%d mark=%llu",
nodeid, (unsigned long long)mark);
}
}
fclose(file);
return 0;
out:
fclose(file);
return rv;
}
const struct node_config *node_config_get(int nodeid)
{
if (nodeid <= 0 || nodeid > MAX_NODES - 1) {
log_debug("node config requested for id=%d returning defaults", nodeid);
return &nc_default;
}
return &nc[nodeid];
}
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