int main(int argc, char *argv[]) {
exitUnless(argc == 2, kWrongArgumentCount,
stderr, "Usage: %s <n>\n", argv[0]);
size_t secs = atoi(argv[1]);
for (size_t i = 0; i < secs; i++) {
sleep(1);
}
pid_t pid = getpid();
exitUnless(kill(-pid, SIGTSTP) == 0, kKillError,
stderr, "Failed to SIGSTP process group %d.\n", pid);
return 0;
}
int main(int argc, char *argv[]) {
exitUnless(argc == 3, stderr, kWrongArgumentCount, "Usage: %s <directory> <pattern>\n", argv[0]);
struct stat st;
const char *directory = argv[1];
stat(directory, &st);
exitUnless(S_ISDIR(st.st_mode), stderr, kDirectoryNeeded, "<directory> must be an actual directory, %s is not", directory);
size_t length = strlen(directory);
if (length > kMaxPath) return 0;
const char *pattern = argv[2];
char path[kMaxPath + 1];
strcpy(path, directory); // no buffer overflow because of above check
listMatches(path, length, pattern);
return 0;
}
int main() {
#ifdef __linux
const char* device = "/dev/ttyUSB3";
#endif
#ifdef RSSCON_WINDOWS
const char* device = "COM:5";
#endif
LOG4C_CATEGORY log = get_log(LOG_CATEGORY);
log_info(log, "create rsscon");
unsigned int baudrate = RSSCON_BAUDRATE_921600;
Rsscon* rsscon = rssconCreate(device, baudrate);
printErrorUnless(rsscon != NULL, "rsscon is null.");
exitUnless(rsscon != NULL );
log_info(log, "init rsscon");
bool ret = rssconInit(rsscon);
printErrorUnless(ret, "rsscon init.");
printRssconError(rsscon);
cleanupUnless(ret, rsscon);
exitUnless(ret);
ret = rssconSetBlocking(rsscon, true);
ret = rssconSetWait(rsscon, false);
log_info(log, "open rsscon");
ret = rssconOpen(rsscon);
printErrorUnless(ret, "rsscon open.");
printRssconError(rsscon);
cleanupUnless(ret, rsscon);
// ret = readInfo(rsscon);
// printErrorUnless(ret, "read info.");
// printRssconError(rsscon);
// cleanupUnless(ret, rsscon);
log_info(log, "read data");
ret = readData(rsscon);
printErrorUnless(ret, "read data.");
printRssconError(rsscon);
cleanupUnless(ret, rsscon);
free_log();
return 0;
}
int main(int argc, char *argv[]) {
pid_t children[kNumChildren];
for (size_t i = 0; i < kNumChildren; i++) {
children[i] = fork();
exitIf(children[i] == -1, kForkFail, stderr, "Fork function failed.\n");
if (children[i] == 0) exit(110 + i);
}
for (size_t i = 0; i < kNumChildren; i++) {
int status;
exitUnless(waitpid(children[i], &status, 0) == children[i],
kWaitFail, stderr, "Intentional wait on child %d failed.\n", children[i]);
exitUnless(WIFEXITED(status) && (WEXITSTATUS(status) == (110 + i)),
kExitFail, stderr, "Correct child %d exited abnormally.\n");
}
return 0;
}
static void waitForChildProcess(pid_t pid) {
exitUnless(waitpid(pid, NULL, 0) == pid, kWaitFailed,
stderr, "Error waiting in foreground for process %d to exit", pid);
}