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POError: ‘O_CREATE’ undeclared (first use in this function)
 

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  1. POError: ‘O_CREATE’ undeclared (first use in this function)
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    <p>The following code is supposed to synchronize two processes, a producer that writes some integers, and a consumers that reads them, now when executing it gives me this error: </p> <pre><code>‘O_CREATE’ undeclared (first use in this function) </code></pre> <p>But I have included the <code>fcntl.h</code>, what else might be the problem?</p> <pre><code>int main(void) { int fd, n, i; pid_t pid, ppid; char buf[1]; if((fd=open("/tmp/data_file", O_APPEND|O_CREATE, 0640)) &lt;0) exit(1); sigset(SIGTERM,SIG_IGN);/* signal */ ; sigset(SIGINT,SIG_IGN); /* signal */ pid=fork(); switch (pid) { case -1: { perror(“FORK”); exit(1); } case 0: /* child process - Producer */ sigset(SIGUSR1,wakeup); sighold(SIGUSR1); /* block / hold signals SIGUSR1 until sigpause*/ for (i=0; i&lt;=100; i++) { /* sleep a random amount of time */ n = (int)(getpid()%256); srand((unsigned)n); sleep(rand() %5); /* writes a character in file */ sprintf(buf,"%d",i); write(fd, buf,sizeof(buf)); fprintf(stderr,"Producer PID=%d value = %d\n",getpid(), i); ppid=getppid(); kill(ppid, SIGUSR2); sigpause(SIGUSR1); /* pause(); until SIGUSR! received*/ } break; default: /* -parent code - Consumer */ sigset(SIGUSR2,wakeup); sighold(SIGUSR2); /* block / hold signals SIGUSR2 until sigpause*/ for (i=0; i&lt;=100; i++) { /* sleep a random amount of time */ n = (int)(getpid()%256); srand((unsigned)n); sleep(rand() %5); sigpause(SIGUSR2); /* pause(); */ /* reads a character from file */ read(fd, buf,sizeof(buf)); fprintf(stderr,"Consumer PID=%d value=%d\n",getpid(),atoi(buf)); kill(pid, SIGUSR1) ; } break; } exit(0); } </code></pre>
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    1. PO
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    1. This table or related slice is empty.
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    1. USYu Hao
    1. USThair Abdalla
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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      1. POError: ‘O_CREATE’ undeclared (first use in this function)
      1. This table or related slice is empty.
      1. VTUpMod
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      1. POError: ‘O_CREATE’ undeclared (first use in this function)
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

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