rosapps/net/ncftp/sio/UAcceptA.c

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