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tcpd
tcp_wrappers_7.6-fedora-sigalarm.diff
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File tcp_wrappers_7.6-fedora-sigalarm.diff of Package tcpd
--- rfc931.c.orig +++ rfc931.c @@ -92,6 +92,8 @@ char *dest; char *cp; char *result = unknown; FILE *fp; + unsigned saved_timeout; + struct sigaction nact, oact; #ifdef INET6 /* address family must be the same */ @@ -134,7 +136,12 @@ char *dest; */ if (sigsetjmp(timebuf, 1) == 0) { - signal(SIGALRM, timeout); + /* Save SIGALRM timer and handler. Sudheer Abdul-Salam, SUN. */ + saved_timeout = alarm(0); + nact.sa_handler = timeout; + nact.sa_flags = 0; + (void) sigemptyset(&nact.sa_mask); + (void) sigaction(SIGALRM, &nact, &oact); alarm(rfc931_timeout); /* @@ -223,6 +230,10 @@ char *dest; } alarm(0); } + /* Restore SIGALRM timer and handler. Sudheer Abdul-Salam, SUN. */ + (void) sigaction(SIGALRM, &oact, NULL); + if (saved_timeout > 0) + alarm(saved_timeout); fclose(fp); } STRN_CPY(dest, result, STRING_LENGTH);
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