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sio
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SAcceptA.c
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C/C++ Source or Header
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2001-11-19
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1KB
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56 lines
#include "syshdrs.h"
#ifdef PRAGMA_HDRSTOP
# pragma hdrstop
#endif
#ifndef NO_SIGNALS
extern Sjmp_buf gNetTimeoutJmp;
extern Sjmp_buf gPipeJmp;
#endif
int
SAcceptA(int sfd, struct sockaddr_in *const addr, int tlen)
{
int result;
#ifndef NO_SIGNALS
vsio_sigproc_t sigalrm, sigpipe;
#endif
sockaddr_size_t size;
if (tlen < 0) {
errno = 0;
for (;;) {
size = (sockaddr_size_t) sizeof(struct sockaddr_in);
result = accept(sfd, (struct sockaddr *) addr, &size);
if ((result >= 0) || (errno != EINTR))
return (result);
}
}
#ifndef NO_SIGNALS
if (SSetjmp(gNetTimeoutJmp) != 0) {
alarm(0);
(void) SSignal(SIGALRM, (sio_sigproc_t) sigalrm);
(void) SSignal(SIGPIPE, (sio_sigproc_t) sigpipe);
errno = ETIMEDOUT;
return (kTimeoutErr);
}
sigalrm = (vsio_sigproc_t) SSignal(SIGALRM, SIOHandler);
sigpipe = (vsio_sigproc_t) SSignal(SIGPIPE, SIG_IGN);
alarm((alarm_time_t) tlen);
errno = 0;
do {
size = (sockaddr_size_t) sizeof(struct sockaddr_in);
result = accept(sfd, (struct sockaddr *) addr, &size);
} while ((result < 0) && (errno == EINTR));
alarm(0);
(void) SSignal(SIGALRM, (sio_sigproc_t) sigalrm);
(void) SSignal(SIGPIPE, (sio_sigproc_t) sigpipe);
return (result);
#else
return (-1);
#endif
} /* SAcceptA */