diff options
Diffstat (limited to 'Src/Modules/zpty.c')
| -rw-r--r-- | Src/Modules/zpty.c | 103 |
1 files changed, 47 insertions, 56 deletions
diff --git a/Src/Modules/zpty.c b/Src/Modules/zpty.c index 463fbdf75..30a36b194 100644 --- a/Src/Modules/zpty.c +++ b/Src/Modules/zpty.c @@ -171,7 +171,7 @@ get_pty(int master, int *retfd) int ret; if (master) { - if ((mfd = open("/dev/ptmx", O_RDWR)) < 0) + if ((mfd = open("/dev/ptmx", O_RDWR|O_NOCTTY)) < 0) return 1; if (grantpt(mfd) || unlockpt(mfd) || !(name = ptsname(mfd))) { @@ -182,7 +182,7 @@ get_pty(int master, int *retfd) return 0; } - if ((sfd = open(name, O_RDWR)) < 0) { + if ((sfd = open(name, O_RDWR|O_NOCTTY)) < 0) { close(mfd); return 1; } @@ -242,7 +242,7 @@ get_pty(int master, int *retfd) name[8] = *p1; for (p2 = char2; *p2; p2++) { name[9] = *p2; - if ((mfd = open(name, O_RDWR)) >= 0) { + if ((mfd = open(name, O_RDWR|O_NOCTTY)) >= 0) { *retfd = mfd; return 0; @@ -251,7 +251,7 @@ get_pty(int master, int *retfd) } } name[5] = 't'; - if ((sfd = open(name, O_RDWR)) >= 0) { + if ((sfd = open(name, O_RDWR|O_NOCTTY)) >= 0) { *retfd = sfd; return 0; @@ -268,12 +268,14 @@ newptycmd(char *nam, char *pname, char **args, int echo, int nblock) { Ptycmd p; int master, slave, pid; - char *cmd; + Eprog prog; - if (!(cmd = findcmd(*args, 1))) { - zwarnnam(nam, "unknown command: %s", *args, 0); + prog = parse_string(zjoin(args, ' ', 1), 0); + if (!prog) { + errflag = 0; return 1; } + if (get_pty(1, &master)) { zwarnnam(nam, "can't open pseudo terminal: %e", NULL, errno); return 1; @@ -283,41 +285,40 @@ newptycmd(char *nam, char *pname, char **args, int echo, int nblock) close(master); return 1; } else if (!pid) { + /* This code copied from the clone module, except for getting * + * the descriptor from get_pty() and duplicating it to 0/1/2. */ - pid = getpid(); - + clearjobtab(); + ppid = getppid(); + mypid = getpid(); #ifdef HAVE_SETSID - setsid(); -#else + if (setsid() != mypid) { + zwarnnam(nam, "failed to create new session: %e", NULL, errno); +#endif #ifdef TIOCNOTTY - { - int t = open("/dev/tty", O_RDWR); - - ioctl(t, TIOCNOTTY, 0); - close(t); - } + if (ioctl(SHTTY, TIOCNOTTY, 0)) + zwarnnam(nam, "%e", NULL, errno); + setpgrp(0L, mypid); #endif +#ifdef HAVE_SETSID + } #endif if (get_pty(0, &slave)) exit(1); +#ifdef TIOCGWINSZ + /* Set the window size before associating with the terminal * + * so that we don't get hit with a SIGWINCH. I'm paranoid. */ + if (interact) { + struct ttyinfo info; -#ifdef TIOCSCTTY - ioctl(slave, TIOCSCTTY, 0); -#endif - - /* This is taken from attachtty(). Should we exit in case of - * failure? */ - -#ifdef HAVE_TCSETPGRP - tcsetpgrp(slave, pid); -#else -# if ardent - setpgrp(); -# else - ioctl(slave, TIOCSPGRP, &pid); -# endif -#endif + if (ioctl(slave, TIOCGWINSZ, (char *) &info.winsize) == 0) { + info.winsize.ws_row = lines; + info.winsize.ws_col = columns; + ioctl(slave, TIOCSWINSZ, (char *) &info.winsize); + } + } +#endif /* TIOCGWINSZ */ if (!echo) { struct ttyinfo info; @@ -336,21 +337,9 @@ newptycmd(char *nam, char *pname, char **args, int echo, int nblock) } } -#ifdef TIOCGWINSZ - if (interact) { - struct ttyinfo info; - - if (ioctl(slave, TIOCGWINSZ, (char *) &info.winsize) == 0) { - info.winsize.ws_row = lines; - info.winsize.ws_col = columns; - ioctl(slave, TIOCSWINSZ, (char *) &info.winsize); - } - } -#endif /* TIOCGWINSZ */ - - signal_default(SIGTERM); - signal_default(SIGINT); - signal_default(SIGQUIT); +#ifdef TIOCSCTTY + ioctl(slave, TIOCSCTTY, 0); +#endif close(0); close(1); @@ -360,16 +349,18 @@ newptycmd(char *nam, char *pname, char **args, int echo, int nblock) dup2(slave, 1); dup2(slave, 2); + closem(0); close(slave); close(master); - - if (SHTTY != -1) - close(SHTTY); - - closedumps(); - - execve(cmd, args, environ); - exit(0); + close(coprocin); + close(coprocout); + init_io(); + setsparam("TTY", ztrdup(ttystrname)); + + execode(prog, 1, 0); + opts[INTERACTIVE] = 0; + stopmsg = 2; + zexit(lastval, 0); } master = movefd(master); |