diff options
| -rw-r--r-- | shell/hush.c | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/shell/hush.c b/shell/hush.c index ba2081d..0485313 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -894,7 +894,8 @@ static int check_and_run_traps(int sig) //TODO // case SIGHUP: ... // break; - default: /* SIGTERM, SIGQUIT, SIGTTIN, SIGTTOU, SIGTSTP */ + default: /* ignored: */ + /* SIGTERM, SIGQUIT, SIGTTIN, SIGTTOU, SIGTSTP */ break; } } @@ -4940,7 +4941,7 @@ static void block_signals(int second_time) mask = 0 | (1 << SIGQUIT) | (1 << SIGTERM) - | (1 << SIGHUP) +//TODO | (1 << SIGHUP) #if ENABLE_HUSH_JOB | (1 << SIGTTIN) | (1 << SIGTTOU) | (1 << SIGTSTP) #endif @@ -4983,7 +4984,7 @@ static void maybe_set_to_sigexit(int sig) signal(sig, handler); } } -/* Set handlers to restore tty pgrm and exit */ +/* Set handlers to restore tty pgrp and exit */ static void set_fatal_handlers(void) { /* We _must_ restore tty pgrp on fatal signals */ @@ -4998,8 +4999,9 @@ static void set_fatal_handlers(void) /* bash 3.2 seems to handle these just like 'fatal' ones */ maybe_set_to_sigexit(SIGPIPE); maybe_set_to_sigexit(SIGALRM); +//TODO: disable and move down when proper SIGHUP handling is added maybe_set_to_sigexit(SIGHUP ); - /* if we are interactive, SIGTERM and SIGINT are masked. + /* if we are interactive, [SIGHUP,] SIGTERM and SIGINT are masked. * if we aren't interactive... but in this case * we never want to restore pgrp on exit, and this fn is not called */ /*maybe_set_to_sigexit(SIGTERM);*/ @@ -5075,8 +5077,8 @@ int hush_main(int argc, char **argv) #endif /* Shell is non-interactive at first. We need to call - * block_signals(0) if we are going to execute "sh script", - * "sh -c cmds" or login shell's /etc/profile and friends. + * block_signals(0) if we are going to execute "sh <script>", + * "sh -c <cmds>" or login shell's /etc/profile and friends. * If we later decide that we are interactive, we run block_signals(0) * (or re-run block_signals(1) if we ran block_signals(0) before) * in order to intercept (more) signals. @@ -5125,11 +5127,11 @@ int hush_main(int argc, char **argv) case '?': G.last_return_code = xatoi_u(optarg); break; -#if ENABLE_HUSH_LOOPS +# if ENABLE_HUSH_LOOPS case 'D': G.depth_of_loop = xatoi_u(optarg); break; -#endif +# endif case 'R': case 'V': set_local_var(xstrdup(optarg), 0, opt == 'R'); @@ -5178,8 +5180,8 @@ int hush_main(int argc, char **argv) if (argv[optind]) { FILE *input; /* - * Non-interactive "bash <script>" sources $BASH_ENV here - * (without scanning $PATH). + * "bash <script>" (which is never interactive (unless -i?)) + * sources $BASH_ENV here (without scanning $PATH). * If called as sh, does the same but with $ENV. */ debug_printf("running script '%s'\n", argv[optind]); @@ -5212,6 +5214,9 @@ int hush_main(int argc, char **argv) if (isatty(STDIN_FILENO) && isatty(STDOUT_FILENO)) { G.saved_tty_pgrp = tcgetpgrp(STDIN_FILENO); debug_printf("saved_tty_pgrp:%d\n", G.saved_tty_pgrp); +//TODO: "interactive" and "have job control" are two different things. +//If tcgetpgrp fails here, "have job control" is false, but "interactive" +//should stay on! Currently, we mix these into one. if (G.saved_tty_pgrp >= 0) { /* try to dup stdin to high fd#, >= 255 */ G_interactive_fd = fcntl(STDIN_FILENO, F_DUPFD, 255); |