diff options
Diffstat (limited to 'shell/hush.c')
| -rw-r--r-- | shell/hush.c | 37 |
1 files changed, 18 insertions, 19 deletions
diff --git a/shell/hush.c b/shell/hush.c index 13a06a4..4a0fc23 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -2863,7 +2863,7 @@ static int run_function(const struct function *funcp, char **argv) /* Called after [v]fork() in run_pipe, or from builtin_exec. * Never returns. - * XXX no exit() here. If you don't exec, use _exit instead. + * Don't exit() here. If you don't exec, use _exit instead. * The at_exit handlers apparently confuse the calling process, * in particular stdin handling. Not sure why? -- because of vfork! (vda) */ static void pseudo_exec_argv(nommu_save_t *nommu_save, @@ -3136,12 +3136,8 @@ static int checkjobs(struct pipe* fg_pipe) * [3]+ Stopped sleep 20 | false * bash-3.00# echo $? * 1 <========== bg pipe is not fully done, but exitcode is already known! + * [hush 1.14.0: yes we do it right] */ - -//FIXME: non-interactive bash does not continue even if all processes in fg pipe -//are stopped. Testcase: "cat | cat" in a script (not on command line) -// + killall -STOP cat - wait_more: while (1) { int i; @@ -3175,7 +3171,6 @@ static int checkjobs(struct pipe* fg_pipe) debug_printf_jobs("check pid %d\n", fg_pipe->cmds[i].pid); if (fg_pipe->cmds[i].pid != childpid) continue; - /* printf("process %d exit %d\n", i, WEXITSTATUS(status)); */ if (dead) { fg_pipe->cmds[i].pid = 0; fg_pipe->alive_cmds--; @@ -3191,12 +3186,17 @@ static int checkjobs(struct pipe* fg_pipe) debug_printf_jobs("fg_pipe: alive_cmds %d stopped_cmds %d\n", fg_pipe->alive_cmds, fg_pipe->stopped_cmds); if (fg_pipe->alive_cmds - fg_pipe->stopped_cmds <= 0) { - /* All processes in fg pipe have exited/stopped */ + /* All processes in fg pipe have exited or stopped */ +/* Note: *non-interactive* bash does not continue if all processes in fg pipe + * are stopped. Testcase: "cat | cat" in a script (not on command line!) + * and "killall -STOP cat" */ + if (G_interactive_fd) { #if ENABLE_HUSH_JOB - if (fg_pipe->alive_cmds) - insert_bg_job(fg_pipe); + if (fg_pipe->alive_cmds) + insert_bg_job(fg_pipe); #endif - return rcode; + return rcode; + } } /* There are still running processes in the fg pipe */ goto wait_more; /* do waitpid again */ @@ -3400,10 +3400,10 @@ static int run_pipe(struct pipe *pi) goto clean_up_and_ret1; } } - /* XXX setup_redirects acts on file descriptors, not FILEs. + /* setup_redirects acts on file descriptors, not FILEs. * This is perfect for work that comes after exec(). * Is it really safe for inline use? Experimentally, - * things seem to work with glibc. */ + * things seem to work. */ rcode = setup_redirects(command, squirrel); if (rcode == 0) { new_env = expand_assignments(argv, command->assignment_cnt); @@ -5026,7 +5026,7 @@ static int handle_dollar(o_string *as_string, o_addchr(dest, SPECIAL_VAR_SYMBOL); ch = i_getch(input); nommu_addchr(as_string, ch); - /* XXX maybe someone will try to escape the '}' */ + /* TODO: maybe someone will try to escape the '}' */ expansion = 0; first_char = true; all_digits = false; @@ -5992,7 +5992,7 @@ int hush_main(int argc, char **argv) /* If we are login shell... */ if (argv[0] && argv[0][0] == '-') { FILE *input; - /* XXX what should argv be while sourcing /etc/profile? */ + /* TODO: what should argv be while sourcing /etc/profile? */ debug_printf("sourcing /etc/profile\n"); input = fopen_for_read("/etc/profile"); if (input != NULL) { @@ -6310,7 +6310,7 @@ static int builtin_exec(char **argv) #if !BB_MMU nommu_save_t dummy; #endif -// FIXME: if exec fails, bash does NOT exit! We do... +// TODO: if exec fails, bash does NOT exit! We do... pseudo_exec_argv(&dummy, argv, 0, NULL); /* never returns */ } @@ -6663,7 +6663,7 @@ static int builtin_source(char **argv) if (*++argv == NULL) return EXIT_FAILURE; - /* XXX search through $PATH is missing */ + /* TODO: search through $PATH is missing */ input = fopen_or_warn(*argv, "r"); if (!input) { /* bb_perror_msg("%s", *argv); - done by fopen_or_warn */ @@ -6672,8 +6672,7 @@ static int builtin_source(char **argv) close_on_exec_on(fileno(input)); /* Now run the file */ -//TODO: - /* XXX argv and argc are broken; need to save old G.global_argv + /* TODO: argv and argc are broken; need to save old G.global_argv * (pointer only is OK!) on this stack frame, * set G.global_argv=argv+1, recurse, and restore. */ parse_and_run_file(input); |