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handle deficient signal systems
Pull in the sigaction module from gnulib, and add ifdef checks for a bunch of signals that don't exist on Windows.
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@ -13,6 +13,7 @@ modules="
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iswblank
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lstat
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regex
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sigaction
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snprintf-posix
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stdarg
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strcase
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14
src/nano.c
14
src/nano.c
@ -1173,11 +1173,15 @@ void signal_init(void)
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memset(&act, 0, sizeof(struct sigaction));
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act.sa_handler = SIG_IGN;
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sigaction(SIGINT, &act, NULL);
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#ifdef SIGQUIT
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sigaction(SIGQUIT, &act, NULL);
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#endif
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/* Trap SIGHUP and SIGTERM because we want to write the file out. */
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act.sa_handler = handle_hupterm;
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#ifdef SIGHUP
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sigaction(SIGHUP, &act, NULL);
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#endif
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sigaction(SIGTERM, &act, NULL);
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#ifndef NANO_TINY
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@ -1189,17 +1193,23 @@ void signal_init(void)
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/* Trap normal suspend (^Z) so we can handle it ourselves. */
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if (!ISSET(SUSPEND)) {
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act.sa_handler = SIG_IGN;
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#ifdef SIGTSTP
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sigaction(SIGTSTP, &act, NULL);
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#endif
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} else {
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/* Block all other signals in the suspend and continue handlers.
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* If we don't do this, other stuff interrupts them! */
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sigfillset(&act.sa_mask);
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act.sa_handler = do_suspend;
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#ifdef SIGTSTP
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sigaction(SIGTSTP, &act, NULL);
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#endif
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act.sa_handler = do_continue;
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#ifdef SIGCONT
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sigaction(SIGCONT, &act, NULL);
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#endif
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}
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}
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@ -1231,11 +1241,15 @@ RETSIGTYPE do_suspend(int signal)
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/* Trap SIGHUP and SIGTERM so we can properly deal with them while
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* suspended. */
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act.sa_handler = handle_hupterm;
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#ifdef SIGHUP
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sigaction(SIGHUP, &act, NULL);
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#endif
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sigaction(SIGTERM, &act, NULL);
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/* Do what mutt does: send ourselves a SIGSTOP. */
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#ifdef SIGSTOP
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kill(0, SIGSTOP);
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#endif
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}
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/* The version of above function that is bound to a key. */
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