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#include "check_nvme.h"
#include <regex>
const char *servicename = (const char*)"NVME";
int getNVMeAttrValue(string line) {
line = std::regex_replace(line, std::regex("\\s+"), " ");
line = std::regex_replace(line, std::regex("^ "), "");
return stoi(line.substr(line.find(":")+1));
}
std::string getNVMeAttrName(string line) {
size_t first = line.find_first_not_of(' ');
size_t last = line.find_first_of(':',first);
return line.substr(first,last-first);
}
int evalStatus(const char* disk, string *status) {
string output = "";
string line = "";
int rc = run_smartctl_cmd(string(SMARTCTL_CMD_ATTRS), disk,&output);
if(rc) {
cout << "Error reading SMART data from disk " << disk << endl;
exit(UNKN);
}
map<std::string,NVMeAttr> attrMap;
attrMap[AVAILABLE_SPARE] = spare;
attrMap[MEDIA_ERRORS] = errors;
attrMap[PERCENTAGE_USED] = used;
stringstream sstream;
sstream.str(output);
while(getline(sstream,line)) {
if(line == "") {
continue;
}
for(map<std::string,NVMeAttr>::iterator it = attrMap.begin(); it != attrMap.end(); ++it) {
std::string name = it->first;
if(getNVMeAttrName(line) == name) {
attrMap[name].value = getNVMeAttrValue(line);
}
}
}
int ret = OK;
*status = string(disk);
for(map<std::string, NVMeAttr>::iterator it = attrMap.begin(); it != attrMap.end(); ++it) {
NVMeAttr attr = it->second;
if(attr.value == -1) {
if(attr.optional) {
continue;
}
*status = string(disk) + " status UNKNOWN";
return UNKN;
}
int veredict = 0;
if(attr.lower_than) {
if(attr.value < attr.threshold_warn) {
veredict = WARN;
}
if(attr.threshold_crit != -1 && attr.value < attr.threshold_crit) {
veredict = CRIT;
}
} else {
if(attr.value > attr.threshold_warn) {
veredict = WARN;
}
if(attr.threshold_crit != -1 && attr.value > attr.threshold_crit) {
veredict = CRIT;
}
}
switch(veredict) {
case OK:
break;
case WARN:
if(ret == OK) {
ret = WARN;
}
break;
case CRIT:
ret = CRIT;
break;
}
*status += " " + attr.name + ":" + to_string(attr.value);
}
return ret;
}
int run_smartctl_cmd(const string command, const char* disk, string* output) {
int uid = getuid();
setreuid(0,0);
int rc = exec(command + disk,output);
setreuid(uid,0);
return rc;
}
void printVersion() {
cout << "check_nvme v" << VERSION << endl << endl;
}
void printHelp(bool longVersion) {
if(longVersion) {
printVersion();
cout << "Checks for pending, reallocated or uncorrectable sectors in NVMe disks" << endl << "WARNING: Requires the setuid bit to be set to run as root" << endl << endl;
printHelp(false);
cout << "Options:" << endl;
cout << " -h" << endl;
cout << " Print detailed help screen" << endl;
cout << " -V" << endl;
cout << " Print version information" << endl;
cout << " DISKS" << endl;
cout << " Disks for which to retrieve S.M.A.R.T data" << endl << endl;
return;
}
cout << "Usage: " << endl << "check_smart [-hV] DISKS..." << endl << endl;
}
void set_timeout(unsigned int sec) {
struct itimerval timer;
timer.it_value.tv_sec = sec;
timer.it_value.tv_usec = 0;
timer.it_interval.tv_sec = 0;
timer.it_interval.tv_usec = 0;
setitimer (ITIMER_VIRTUAL, &timer, 0);
struct sigaction sa;
memset (&sa, 0, sizeof (sa));
sa.sa_handler = &timer_handler;
sigaction (SIGVTALRM, &sa, 0);
}
int main(int argc, char **argv) {
set_timeout(10);
int c;
while ((c = getopt (argc, argv, "Vh")) != -1) {
switch(c) {
case 'h':
printHelp(true);
return OK;
case 'V':
printVersion();
return OK;
case '?':
printHelp(false);
return UNKN;
}
}
if(argc == 1) {
cout << "No disks checked" << endl;
return 3;
}
string *results = new string[argc-1];
int returnCode = OK;
for(int i = 1; i < argc; i++) {
switch(evalStatus(argv[i],&(results[i-1]))) {
case OK:
break;
case WARN:
if(returnCode == OK) {returnCode = WARN;}
break;
case CRIT:
returnCode = CRIT;
break;
case UNKN:
returnCode = UNKN;
break;
}
}
cout << servicename;
if(returnCode == OK) {cout << " OK - disk status: ";}
else if(returnCode == WARN) {cout << " WARNING - disk status: ";}
else if(returnCode == CRIT) {cout << " CRITICAL - disk status: ";}
else if(returnCode == UNKN) {cout << " UNKNOWN - disk status: ";}
for(int i = 0; i < (argc-1); i++) {
cout << results[i];
if(i != (argc-2)) {cout << ", ";}
}
cout << endl;
return returnCode;
}
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