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Allow SIGINT in non-interactive mode

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Prior to this fix, fish would swallow SIGINT in non-interactive mode. This
meant that scripts could only be Ctrl-C'd if fish was executing an external
command.

Unblock SIGINT in non-interactive mode.

Fixes #5253
This commit is contained in:
ridiculousfish 2018-10-12 23:58:14 -07:00
parent c76de58758
commit f212518d3e
1 changed files with 11 additions and 3 deletions
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14
src/signal.cpp
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@ -12,6 +12,7 @@
#include "common.h"
#include "event.h"
#include "fallback.h" // IWYU pragma: keep
#include "parser.h"
#include "proc.h"
#include "reader.h"
#include "wutil.h" // IWYU pragma: keep
@ -233,6 +234,12 @@ static void handle_int(int sig, siginfo_t *info, void *context) {
default_handler(sig, info, context);
}
/// Non-interactive ^C handler.
static void handle_int_notinteractive(int sig, siginfo_t *info, void *context) {
parser_t::skip_all_blocks();
default_handler(sig, info, context);
}
/// sigchld handler. Does notification and calls the handler in proc.c.
static void handle_chld(int sig, siginfo_t *info, void *context) {
job_handle_signal(sig, info, context);
@ -317,11 +324,12 @@ static void set_non_interactive_handlers() {
act.sa_flags = 0;
sigemptyset(&act.sa_mask);
// Non-interactive. Ignore interrupt, check exit status of processes to determine result
// instead.
act.sa_handler = SIG_IGN;
sigaction(SIGINT, &act, 0);
sigaction(SIGQUIT, &act, 0);
act.sa_sigaction = &handle_int_notinteractive;
act.sa_flags = SA_SIGINFO;
sigaction(SIGINT, &act, NULL);
}
/// Sets up appropriate signal handlers.