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spawn.c

#include <config.h>
#include "ucarp.h"
#include "spawn.h"
#ifdef HAVE_SYS_WAIT_H
# include <sys/wait.h>
#endif
#include "log.h"

#ifdef WITH_DMALLOC
# include <dmalloc.h>
#endif

int spawn_handler(const int dev_desc_fd, const char * const script)
{
    pid_t pid;
    
    if (script == NULL || *script == 0) {
        return 0;
    }
    pid = fork();
    if (pid == (pid_t) 0) {
        (void) close(dev_desc_fd);
      execl(script, script, interface, vaddr_arg, xparam, (char *) NULL);
      logfile(LOG_ERR, _("Unable to exec %s %s %s%s%s: %s"), 
            script, interface, vaddr_arg, 
                (xparam ? " " : ""), (xparam ? xparam : ""), 
                strerror(errno));
        _exit(EXIT_FAILURE);
    } else if (pid != (pid_t) -1) {
        logfile(LOG_WARNING, _("Spawning [%s %s %s%s%s]"), 
                script, interface, vaddr_arg, 
                (xparam ? " " : ""), (xparam ? xparam : ""));
#ifdef HAVE_WAITPID
      {
          while (waitpid(pid, NULL, 0) == (pid_t) -1 && errno == EINTR);
      }
#else
        {
            pid_t foundpid;
            
          do {
            foundpid = wait3(NULL, 0, NULL);
            if (foundpid == (pid_t) -1 && errno == EINTR) {
                continue;
            }
          } while (foundpid != (pid_t) -1 && foundpid != pid);
        }
#endif
    } else {
        logfile(LOG_ERR, _("Unable to spawn the script: %s"),
                strerror(errno));
        return -1;
    }
    return 0;
}

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