Thread: Segmentation fault

Hello everyone,
my program was working "somehow" and now it ain't.

Basically, my server is receiving a command and he's printing it well but I need to separate it into an array of strings which has been implemented before by some friends of mine and therefore is working correctly but after it I can't print the arguments inside it.

Take a look at it please

My server code :

Code:

void filemon(char **cmd)
{       NFicheiros aux;
	aux=cria();
        char *ficheiro = NULL;
	printf("%s",cmd[1]);
	if(strncmp(cmd[0],"addfile",7)== 0)
 	{
		printf("3");
		printf("%s",cmd[0]);
 		ficheiro = strdup(cmd[2]);
		printf("merda de cao \n");
  		aux = insereFicheiro(cmd[2],aux);
  		printf("\n\n *** Ficheiro %s adicionado com sucesso! ***\n\n",cmd[2]);
	}
}


char** getArgs(const char* s)
{
    static wordexp_t words;
    static int initialized = 0;
 
    if(s && !initialized)
    {
        wordexp(s, &words, 0);
        initialized = 1;
    }
    else if(s)
    {
        wordexp(s, &words, WRDE_REUSE);
    }
    else
    {
        wordfree(&words);
        initialized == 0;
        return NULL;
    }
 
    return words.we_wordv;
}


int main(int argc, char *argv[])
{
 int pid,status,apipe,rpipe=1,i=0;
 int erro, erro1;
 char **cmds;
 char *comand;
 char *buff;
 const char *comando;
 
 buff=malloc(100*sizeof(char));
 
 printf("\n\n*** Bem vindo ao FileMonitorizer ***\n\n"); 
 
 mkfifo("trabfifo",0646);
 mkfifo("daemonfifo",0646);


 int pidp=99999;
 int modo=0;
 int apaga=1;
 
 comand = buff; 
 while(rpipe != -1 && strcmp(comand,"exit ")!=0)
 {
  printf("\n\n*** A ler do pipe! ***\n\n"); 
  apipe = open("trabfifo",O_RDONLY);
  rpipe = read(apipe,comand,BUF_TAM_MAX);
  if(rpipe)
  {
   close(apipe);
   comand[rpipe] = '\0';
   comando = comand;
   cmds = getArgs(comando);
    
   printf("\n\n*** Comando recebido pelo server -> %s ***\n\n",comando);
   filemon(cmds);
  }
 }
 
 if(modo==1)
 kill(pidp,SIGTERM); 
 printf("\n\n*** A sair do FileMonitorizer! ***\n\n"); 
 system("rm trabfifo");
 system("rm daemonfifo");
 return 1;
}

The error occurs in the function filemon.

Thanks everyone!

https://www.cs.cmu.edu/~gilpin/tutorial/
RMS's gdb Tutorial
Debugging with GDB

Thanks rags.
Thing is, I know exactly when the error is happening.
After doing :

Code:

 cmds = getArgs(comando);

I can successfully do printf("%s",cmds[0]) and the printf will work perfectly.
Despite that, it might sound stupid but after doing :

Code:

printf("\n\n*** Comando recebido pelo server -> %s ***\n\n",comando);

My printf's won't work anymore

Any help ?
Thanks!