diff options
Diffstat (limited to 'shell/hush.c')
| -rw-r--r-- | shell/hush.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/shell/hush.c b/shell/hush.c index a7b55415f..800b0f970 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -2158,7 +2158,10 @@ static int run_list_real(struct pipe *pi) exit(rcode); } ret: - run_list_level--; + if (!--run_list_level && interactive_fd) { + signal(SIGTSTP, SIG_IGN); + signal(SIGINT, SIG_IGN); + } #endif debug_printf_exec("run_list_real lvl %d return %d\n", run_list_level + 1, rcode); return rcode; @@ -3130,7 +3133,9 @@ static FILE *generate_stream_from_list(struct pipe *head) { FILE *pf; int pid, channel[2]; - if (pipe(channel) < 0) bb_perror_msg_and_die("pipe"); + + if (pipe(channel) < 0) + bb_perror_msg_and_die("pipe"); #if BB_MMU pid = fork(); #else @@ -3144,12 +3149,19 @@ static FILE *generate_stream_from_list(struct pipe *head) dup2(channel[1], 1); close(channel[1]); } + /* Prevent it from trying to handle ctrl-z etc */ + run_list_level = 1; + /* Process substitution is not considered to be usual + * 'command execution'. + * SUSv3 says ctrl-Z should be ignored, ctrl-C should not. */ + /* Not needed, we are relying on it being disabled + * everywhere outside actual command execution. */ + /*set_jobctrl_sighandler(SIG_IGN);*/ + set_misc_sighandler(SIG_DFL); _exit(run_list_real(head)); /* leaks memory */ } - debug_printf("forked child %d\n", pid); close(channel[1]); pf = fdopen(channel[0], "r"); - debug_printf("pipe on FILE *%p\n", pf); return pf; } @@ -3199,9 +3211,9 @@ static int process_command_subs(o_string *dest, struct p_context *ctx, * at the same time. That would be a lot of work, and contrary * to the KISS philosophy of this program. */ mark_closed(fileno(p)); - retcode = pclose(p); + retcode = fclose(p); free_pipe_list(inner.list_head, 0); - debug_printf("pclosed, retcode=%d\n", retcode); + debug_printf("closed FILE from child, retcode=%d\n", retcode); return retcode; } #endif |