diff options
| -rw-r--r-- | shell/ash.c | 15 | ||||
| -rw-r--r-- | shell/ash_test/ash-signals/sigquit_exec.right | 2 | ||||
| -rwxr-xr-x | shell/ash_test/ash-signals/sigquit_exec.tests | 4 |
3 files changed, 20 insertions, 1 deletions
diff --git a/shell/ash.c b/shell/ash.c index faa45a8..4f6376f 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -323,7 +323,7 @@ struct globals_misc { #define S_DFL 1 /* default signal handling (SIG_DFL) */ #define S_CATCH 2 /* signal is caught */ #define S_IGN 3 /* signal is ignored (SIG_IGN) */ -#define S_HARD_IGN 4 /* signal is ignored permenantly */ +#define S_HARD_IGN 4 /* signal is ignored permanently */ /* indicates specified signal received */ uint8_t gotsig[NSIG - 1]; /* offset by 1: "signal" 0 is meaningless */ @@ -9024,7 +9024,20 @@ execcmd(int argc UNUSED_PARAM, char **argv) iflag = 0; /* exit on error */ mflag = 0; optschanged(); + /* We should set up signals for "exec CMD" + * the same way as for "CMD" without "exec". + * But optschanged->setinteractive->setsignal + * still thought we are a root shell. Therefore, for example, + * SIGQUIT is still set to IGN. Fix it: + */ + shlvl++; + setsignal(SIGQUIT); + /*setsignal(SIGTERM); - unnecessary because of iflag=0 */ + /*setsignal(SIGTSTP); - unnecessary because of mflag=0 */ + /*setsignal(SIGTTOU); - unnecessary because of mflag=0 */ + shellexec(argv + 1, pathval(), 0); + /* NOTREACHED */ } return 0; } diff --git a/shell/ash_test/ash-signals/sigquit_exec.right b/shell/ash_test/ash-signals/sigquit_exec.right new file mode 100644 index 0000000..a804192 --- /dev/null +++ b/shell/ash_test/ash-signals/sigquit_exec.right @@ -0,0 +1,2 @@ +SigIgn: 0000000000000000 +SigIgn: 0000000000000000 diff --git a/shell/ash_test/ash-signals/sigquit_exec.tests b/shell/ash_test/ash-signals/sigquit_exec.tests new file mode 100755 index 0000000..24bda69 --- /dev/null +++ b/shell/ash_test/ash-signals/sigquit_exec.tests @@ -0,0 +1,4 @@ +# Should show no masked signals in both cases. +# We had a bug where SIGQUIT was masked on exec. +grep SigIgn: /proc/self/status +exec grep SigIgn: /proc/self/status |