Make ^Z, bg & fg work. We don't muck around with
SIGTTIN or SIGTTOU, we just disable use of the prompt for the controlling terminal (and put a ^Z next to it in a ``show who'' listing). Unfortunately, we need to enable a timer to ``poll'' for the terminal having us as the controlling pgrp when a user does a ``bg''. If anyone knows how to do this better - please speak up (is there any indication to the process group leader when it's ctrling terminal gets tcsetpgrp()'d back ?)....
This commit is contained in:
Brian Somers
parent
c3a119d0e9
commit
f91ad6b0b7
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/cvs2svn/branches/MP/; revision=35047
@ -23,7 +23,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: log.c,v 1.25.2.2 1998/04/03 19:25:40 brian Exp $
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* $Id: log.c,v 1.25.2.3 1998/04/03 19:26:40 brian Exp $
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*/
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#include <sys/param.h>
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@ -382,8 +382,14 @@ log_ShowWho(struct cmdargs const *arg)
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{
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struct prompt *p;
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for (p = logprompt; p; p = p->lognext)
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prompt_Printf(arg->prompt, "%s%s\n", p->who, p == arg->prompt ? " *" : "");
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for (p = logprompt; p; p = p->lognext) {
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prompt_Printf(arg->prompt, "%s", p->who);
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if (p == arg->prompt)
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prompt_Printf(arg->prompt, " *");
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if (!p->active)
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prompt_Printf(arg->prompt, " ^Z");
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prompt_Printf(arg->prompt, "\n");
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}
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return 0;
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}
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@ -17,7 +17,7 @@
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Id: main.c,v 1.121.2.42 1998/04/03 19:25:07 brian Exp $
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* $Id: main.c,v 1.121.2.43 1998/04/03 19:25:42 brian Exp $
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*
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* TODO:
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* o Add commands for traffic summary, version display, etc.
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@ -153,26 +153,16 @@ KillChild(int signo)
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static void
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TerminalCont(int signo)
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{
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pending_signal(SIGCONT, SIG_DFL);
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pending_signal(SIGTSTP, TerminalStop);
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if (getpgrp() == prompt_pgrp(SignalPrompt)) {
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prompt_TtyCommandMode(SignalPrompt);
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log_RegisterPrompt(SignalPrompt);
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SignalPrompt->nonewline = 1;
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prompt_Required(SignalPrompt);
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}
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signal(SIGCONT, SIG_DFL);
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prompt_Continue(SignalPrompt);
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}
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static void
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TerminalStop(int signo)
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{
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pending_signal(SIGCONT, TerminalCont);
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if (getpgrp() == prompt_pgrp(SignalPrompt)) {
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prompt_TtyOldMode(SignalPrompt);
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log_UnRegisterPrompt(SignalPrompt);
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}
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pending_signal(SIGTSTP, SIG_DFL);
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kill(getpid(), signo);
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prompt_Suspend(SignalPrompt);
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signal(SIGCONT, TerminalCont);
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raise(SIGSTOP);
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}
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#if 0 /* What's our passwd :-O */
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@ -379,30 +369,14 @@ main(int argc, char **argv)
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pending_signal(SIGINT, CloseConnection);
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pending_signal(SIGQUIT, CloseSession);
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pending_signal(SIGALRM, SIG_IGN);
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#ifdef SIGPIPE
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signal(SIGPIPE, SIG_IGN);
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#endif
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if (mode & MODE_INTER) {
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#ifdef SIGTSTP
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if (mode & MODE_INTER)
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pending_signal(SIGTSTP, TerminalStop);
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#endif
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#ifdef SIGTTIN
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pending_signal(SIGTTIN, TerminalStop);
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#endif
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#ifdef SIGTTOU
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pending_signal(SIGTTOU, SIG_IGN);
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#endif
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}
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if (!(mode & MODE_INTER)) {
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#if 0 /* What's our passwd :-O */
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#ifdef SIGUSR1
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pending_signal(SIGUSR1, SetUpServer);
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pending_signal(SIGUSR1, SetUpServer);
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#endif
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#endif
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#ifdef SIGUSR2
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pending_signal(SIGUSR2, BringDownServer);
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#endif
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}
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pending_signal(SIGUSR2, BringDownServer);
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if (label) {
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if (SelectSystem(bundle, label, CONFFILE, prompt) < 0) {
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@ -23,7 +23,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: prompt.c,v 1.1.2.19 1998/04/03 19:26:28 brian Exp $
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* $Id: prompt.c,v 1.1.2.20 1998/04/04 10:34:28 brian Exp $
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*/
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#include <sys/param.h>
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@ -122,6 +122,10 @@ prompt_UpdateSet(struct descriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n)
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int sets;
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sets = 0;
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if (!p->active)
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return sets;
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if (p->fd_in >= 0) {
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if (r) {
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FD_SET(p->fd_in, r);
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@ -304,6 +308,7 @@ prompt_Create(struct server *s, struct bundle *bundle, int fd)
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p->TermMode = NULL;
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p->nonewline = 1;
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p->needprompt = 1;
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p->active = 1;
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p->bundle = bundle;
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if (p->bundle)
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bundle_RegisterDescriptor(p->bundle, &p->desc);
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@ -341,7 +346,7 @@ prompt_Destroy(struct prompt *p, int verbose)
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void
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prompt_Printf(struct prompt *p, const char *fmt,...)
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{
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if (p) {
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if (p && p->active) {
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va_list ap;
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va_start(ap, fmt);
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@ -354,7 +359,7 @@ prompt_Printf(struct prompt *p, const char *fmt,...)
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void
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prompt_vPrintf(struct prompt *p, const char *fmt, va_list ap)
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{
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if (p) {
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if (p && p->active) {
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vfprintf(p->Term, fmt, ap);
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fflush(p->Term);
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}
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@ -485,3 +490,39 @@ PasswdCommand(struct cmdargs const *arg)
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return 0;
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}
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static struct pppTimer bgtimer;
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static void
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prompt_TimedContinue(void *v)
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{
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prompt_Continue((struct prompt *)v);
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}
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void
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prompt_Continue(struct prompt *p)
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{
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StopTimer(&bgtimer);
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if (getpgrp() == prompt_pgrp(p)) {
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prompt_TtyCommandMode(p);
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p->nonewline = 1;
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prompt_Required(p);
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p->active = 1;
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} else if (!p->owner) {
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bgtimer.func = prompt_TimedContinue;
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bgtimer.name = "prompt bg";
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bgtimer.load = SECTICKS;
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bgtimer.state = TIMER_STOPPED;
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bgtimer.arg = p;
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StartTimer(&bgtimer);
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}
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}
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void
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prompt_Suspend(struct prompt *p)
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{
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if (getpgrp() == prompt_pgrp(p)) {
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prompt_TtyOldMode(p);
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p->active = 0;
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}
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}
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@ -23,7 +23,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: prompt.h,v 1.1.2.3 1998/02/17 19:28:13 brian Exp $
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* $Id: prompt.h,v 1.1.2.4 1998/04/03 19:25:51 brian Exp $
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*/
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#define LOCAL_AUTH 0x01
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@ -45,6 +45,7 @@ struct prompt {
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struct bundle *bundle; /* who I'm controlling */
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unsigned nonewline : 1; /* need a newline before our prompt ? */
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unsigned needprompt : 1; /* Show a prompt at the next UpdateSet() */
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unsigned active : 1; /* Is the prompt active (^Z) */
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char who[40]; /* Where do I come from */
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@ -74,6 +75,8 @@ extern void prompt_TtyTermMode(struct prompt *, struct datalink *);
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extern void prompt_TtyOldMode(struct prompt *);
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extern pid_t prompt_pgrp(struct prompt *);
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extern int PasswdCommand(struct cmdargs const *);
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extern void prompt_Suspend(struct prompt *);
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extern void prompt_Continue(struct prompt *);
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#define prompt_IsTermMode(p, dl) ((p)->TermMode == (dl) ? 1 : 0)
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#define prompt_IsController(p) (!(p) || (p)->owner ? 0 : 1)
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#define prompt_Required(p) ((p)->needprompt = 1)
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