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