diff options
| -rw-r--r-- | shell/hush.c | 35 |
1 files changed, 19 insertions, 16 deletions
diff --git a/shell/hush.c b/shell/hush.c index 370e0d7..d6286b6 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -445,6 +445,9 @@ struct globals { int last_jobid; pid_t saved_tty_pgrp; struct pipe *job_list; +# define G_saved_tty_pgrp (G.saved_tty_pgrp) +#else +# define G_saved_tty_pgrp 0 #endif smallint flag_SIGINT; #if ENABLE_HUSH_LOOPS @@ -1055,8 +1058,8 @@ enum { | (1 << SIGINT) | (1 << SIGHUP) , -#if ENABLE_HUSH_JOB SPECIAL_JOB_SIGS = 0 +#if ENABLE_HUSH_JOB | (1 << SIGTTIN) | (1 << SIGTTOU) | (1 << SIGTSTP) @@ -1088,8 +1091,8 @@ static void sigexit(int sig) /* Careful: we can end up here after [v]fork. Do not restore * tty pgrp then, only top-level shell process does that */ - if (G.saved_tty_pgrp && getpid() == G.root_pid) - tcsetpgrp(G_interactive_fd, G.saved_tty_pgrp); + if (G_saved_tty_pgrp && getpid() == G.root_pid) + tcsetpgrp(G_interactive_fd, G_saved_tty_pgrp); /* Not a signal, just exit */ if (sig <= 0) @@ -3400,7 +3403,7 @@ static int checkjobs_and_fg_shell(struct pipe* fg_pipe) { pid_t p; int rcode = checkjobs(fg_pipe); - if (G.saved_tty_pgrp) { + if (G_saved_tty_pgrp) { /* Job finished, move the shell to the foreground */ p = getpgrp(); /* our process group id */ debug_printf_jobs("fg'ing ourself: getpgrp()=%d\n", (int)p); @@ -3656,7 +3659,7 @@ static int run_pipe(struct pipe *pi) pgrp = getpid(); if (setpgid(0, pgrp) == 0 && pi->followup != PIPE_BG - && G.saved_tty_pgrp /* we have ctty */ + && G_saved_tty_pgrp /* we have ctty */ ) { /* We do it in *every* child, not just first, * to avoid races */ @@ -5954,7 +5957,7 @@ static void block_signals(int second_time) mask = (1 << SIGQUIT); if (G_interactive_fd) { mask = (1 << SIGQUIT) | SPECIAL_INTERACTIVE_SIGS; - if (G.saved_tty_pgrp) /* we have ctty, job control sigs work */ + if (G_saved_tty_pgrp) /* we have ctty, job control sigs work */ mask |= SPECIAL_JOB_SIGS; } G.non_DFL_mask = mask; @@ -6235,10 +6238,10 @@ int hush_main(int argc, char **argv) */ #if ENABLE_HUSH_JOB 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); - if (G.saved_tty_pgrp < 0) - G.saved_tty_pgrp = 0; + G_saved_tty_pgrp = tcgetpgrp(STDIN_FILENO); + debug_printf("saved_tty_pgrp:%d\n", G_saved_tty_pgrp); + if (G_saved_tty_pgrp < 0) + G_saved_tty_pgrp = 0; /* try to dup stdin to high fd#, >= 255 */ G_interactive_fd = fcntl(STDIN_FILENO, F_DUPFD, 255); @@ -6248,7 +6251,7 @@ int hush_main(int argc, char **argv) if (G_interactive_fd < 0) { /* give up */ G_interactive_fd = 0; - G.saved_tty_pgrp = 0; + G_saved_tty_pgrp = 0; } } // TODO: track & disallow any attempts of user @@ -6258,7 +6261,7 @@ int hush_main(int argc, char **argv) if (G_interactive_fd) { close_on_exec_on(G_interactive_fd); - if (G.saved_tty_pgrp) { + if (G_saved_tty_pgrp) { /* If we were run as 'hush &', sleep until we are * in the foreground (tty pgrp == our pgrp). * If we get started under a job aware app (like bash), @@ -6266,8 +6269,8 @@ int hush_main(int argc, char **argv) * who gets the foreground */ while (1) { pid_t shell_pgrp = getpgrp(); - G.saved_tty_pgrp = tcgetpgrp(G_interactive_fd); - if (G.saved_tty_pgrp == shell_pgrp) + G_saved_tty_pgrp = tcgetpgrp(G_interactive_fd); + if (G_saved_tty_pgrp == shell_pgrp) break; /* send TTIN to ourself (should stop us) */ kill(- shell_pgrp, SIGTTIN); @@ -6277,7 +6280,7 @@ int hush_main(int argc, char **argv) /* Block some signals */ block_signals(signal_mask_is_inited); - if (G.saved_tty_pgrp) { + if (G_saved_tty_pgrp) { /* Set other signals to restore saved_tty_pgrp */ set_fatal_handlers(); /* Put ourselves in our own process group @@ -6690,7 +6693,7 @@ static int builtin_fg_bg(char **argv) found: /* TODO: bash prints a string representation * of job being foregrounded (like "sleep 1 | cat") */ - if (argv[0][0] == 'f' && G.saved_tty_pgrp) { + if (argv[0][0] == 'f' && G_saved_tty_pgrp) { /* Put the job into the foreground. */ tcsetpgrp(G_interactive_fd, pi->pgrp); } |