diff options
-rw-r--r-- | shell/ash.c | 51 |
1 files changed, 28 insertions, 23 deletions
diff --git a/shell/ash.c b/shell/ash.c index d320c38ac..b8160433e 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -8420,43 +8420,46 @@ static int evalstring(char *s, int flags); * Perhaps we should avoid entering new trap handlers * while we are executing a trap handler. [is it a TODO?] */ -static int +static void dotrap(void) { uint8_t *g; int sig; - uint8_t savestatus; + uint8_t last_status; + + if (!pending_sig) + return; - savestatus = exitstatus; + last_status = exitstatus; pending_sig = 0; xbarrier(); TRACE(("dotrap entered\n")); for (sig = 1, g = gotsig; sig < NSIG; sig++, g++) { - char *t; + char *p; - if (*g == 0) + if (!*g) continue; - t = trap[sig]; + + if (evalskip) { + pending_sig = sig; + break; + } + + p = trap[sig]; /* non-trapped SIGINT is handled separately by raise_interrupt, * don't upset it by resetting gotsig[SIGINT-1] */ - if (sig == SIGINT && !t) + if (sig == SIGINT && !p) continue; - TRACE(("sig %d is active, will run handler '%s'\n", sig, t)); + TRACE(("sig %d is active, will run handler '%s'\n", sig, p)); *g = 0; - if (!t) + if (!p) continue; - evalstring(t, 0); - exitstatus = savestatus; - if (evalskip) { - TRACE(("dotrap returns %d\n", evalskip)); - return evalskip; - } + evalstring(p, 0); } - - TRACE(("dotrap returns 0\n")); - return 0; + exitstatus = last_status; + TRACE(("dotrap returns\n")); } /* forward declarations - evaluation is fairly recursive business... */ @@ -8492,6 +8495,8 @@ evaltree(union node *n, int flags) } TRACE(("evaltree(%p: %d, %d) called\n", n, n->type, flags)); + dotrap(); + exception_handler = &jmploc; { int err = setjmp(jmploc.loc); @@ -8609,12 +8614,12 @@ evaltree(union node *n, int flags) /* Order of checks below is important: * signal handlers trigger before exit caused by "set -e". */ - if ((pending_sig && dotrap()) - || (checkexit & status) - || (flags & EV_EXIT) - ) { + dotrap(); + + if (checkexit & status) + raise_exception(EXEXIT); + if (flags & EV_EXIT) raise_exception(EXEXIT); - } RESTORE_INT(int_level); TRACE(("leaving evaltree (no interrupts)\n")); |