rosapps/applications/net/ncftp/sio/SAcceptA.c

   1 #include "syshdrs.h"
   2
   3 #ifndef NO_SIGNALS
   4 extern volatile Sjmp_buf gNetTimeoutJmp;
   5 extern volatile Sjmp_buf gPipeJmp;
   6 #endif
   7
   8 int
   9 SAcceptA(int sfd, struct sockaddr_in *const addr, int tlen)
  10 {
  11         int result;
  12 #ifndef NO_SIGNALS
  13         vsio_sigproc_t sigalrm, sigpipe;
  14 #endif
  15         size_t size;
  16
  17         if (tlen < 0) {
  18                 errno = 0;
  19                 for (;;) {
  20                         size = sizeof(struct sockaddr_in);
  21                         result = accept(sfd, (struct sockaddr *) addr, (int *) &size);
  22                         if ((result >= 0) || (errno != EINTR))
  23                                 return (result);
  24                 }
  25         }
  26 #ifndef NO_SIGNALS
  27         if (SSetjmp(gNetTimeoutJmp) != 0) {
  28                 alarm(0);
  29                 (void) SSignal(SIGALRM, (sio_sigproc_t) sigalrm);
  30                 (void) SSignal(SIGPIPE, (sio_sigproc_t) sigpipe);
  31                 errno = ETIMEDOUT;
  32                 return (kTimeoutErr);
  33         }
  34
  35         sigalrm = (vsio_sigproc_t) SSignal(SIGALRM, SIOHandler);
  36         sigpipe = (vsio_sigproc_t) SSignal(SIGPIPE, SIG_IGN);
  37         alarm((unsigned int) tlen);
  38
  39         errno = 0;
  40         do {
  41                 size = sizeof(struct sockaddr_in);
  42                 result = accept(sfd, (struct sockaddr *) addr, (int *) &size);
  43         } while ((result < 0) && (errno == EINTR));
  44
  45         alarm(0);
  46         (void) SSignal(SIGALRM, (sio_sigproc_t) sigalrm);
  47         (void) SSignal(SIGPIPE, (sio_sigproc_t) sigpipe);
  48         return (result);
  49 #else
  50         return (-1);
  51 #endif
  52 }       /* SAcceptA */