Linux Programming Blog

/* An example of a free of signal race program using sigprocmask() and
 * pselect(). */
#include <sys/select.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <arpa/inet.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
 
/* Flag that tells the daemon to exit. */
static volatile int exit_request = 0;
 
/* Signal handler.

/* An example of a signal race condition using the traditional UNIX functions:
 * signal(), select(), accept ().
 */
#include <sys/select.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <arpa/inet.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
 
/* Flag that tells the daemon to exit. */
static volatile int exit_request = 0;
 
/* Signal handler.