From 093489a1ce40a2075b1c5c9feb03c7ab1659d884 Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Thu, 1 Apr 1999 07:20:11 +0000 Subject: [PATCH 1/1] couple more get_pty's --- pppd/sys-bsd.c | 34 ++++++++++++++++++++++++++++++- pppd/sys-osf.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++- pppd/sys-sunos4.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 135 insertions(+), 3 deletions(-) diff --git a/pppd/sys-bsd.c b/pppd/sys-bsd.c index 27c5689..60a7927 100644 --- a/pppd/sys-bsd.c +++ b/pppd/sys-bsd.c @@ -21,7 +21,7 @@ */ #ifndef lint -static char rcsid[] = "$Id: sys-bsd.c,v 1.41 1999/03/22 05:55:36 paulus Exp $"; +static char rcsid[] = "$Id: sys-bsd.c,v 1.42 1999/04/01 07:20:10 paulus Exp $"; /* $NetBSD: sys-bsd.c,v 1.1.1.3 1997/09/26 18:53:04 christos Exp $ */ #endif @@ -460,6 +460,38 @@ int fd, on; ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits); } +/* + * get_pty - get a pty master/slave pair and chown the slave side + * to the uid given. Assumes slave_name points to >= 12 bytes of space. + */ +int +get_pty(master_fdp, slave_fdp, slave_name, uid) + int *master_fdp; + int *slave_fdp; + char *slave_name; + int uid; +{ + struct termios tios; + + if (openpty(master_fdp, slave_fdp, slave_name, NULL, NULL) < 0) + return 0; + + fchown(*slave_fdp, uid, -1); + fchmod(*slave_fdp, S_IRUSR | S_IWUSR); + if (tcgetattr(*slave_fdp, &tios) == 0) { + tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB); + tios.c_cflag |= CS8 | CREAD; + tios.c_iflag = IGNPAR | CLOCAL; + tios.c_oflag = 0; + tios.c_lflag = 0; + if (tcsetattr(*slave_fdp, TCSAFLUSH, &tios) < 0) + warn("couldn't set attributes on pty: %m"); + } else + warn("couldn't get attributes on pty: %m"); + + return 1; +} + /* * open_ppp_loopback - open the device we use for getting diff --git a/pppd/sys-osf.c b/pppd/sys-osf.c index 94b3dd2..45e176f 100644 --- a/pppd/sys-osf.c +++ b/pppd/sys-osf.c @@ -26,7 +26,7 @@ */ #ifndef lint -static char rcsid[] = "$Id: sys-osf.c,v 1.23 1999/03/22 05:55:38 paulus Exp $"; +static char rcsid[] = "$Id: sys-osf.c,v 1.24 1999/04/01 07:20:10 paulus Exp $"; #endif #include @@ -1608,6 +1608,56 @@ get_host_seed() return gethostid(); } +/* + * get_pty - get a pty master/slave pair and chown the slave side + * to the uid given. Assumes slave_name points to >= 12 bytes of space. + */ +int +get_pty(master_fdp, slave_fdp, slave_name, uid) + int *master_fdp; + int *slave_fdp; + char *slave_name; + int uid; +{ + int i, mfd, sfd; + char pty_name[12]; + struct termios tios; + + sfd = -1; + for (i = 0; i < 64; ++i) { + slprintf(pty_name, sizeof(pty_name), "/dev/pty%c%x", + 'p' + i / 16, i % 16); + mfd = open(pty_name, O_RDWR, 0); + if (mfd >= 0) { + pty_name[5] = 't'; + sfd = open(pty_name, O_RDWR | O_NOCTTY, 0); + if (sfd >= 0) + break; + close(mfd); + } + } + if (sfd < 0) + return 0; + + strlcpy(slave_name, pty_name, 12); + *master_fdp = mfd; + *slave_fdp = sfd; + fchown(sfd, uid, -1); + fchmod(sfd, S_IRUSR | S_IWUSR); + if (tcgetattr(sfd, &tios) == 0) { + tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB); + tios.c_cflag |= CS8 | CREAD; + tios.c_iflag = IGNPAR | CLOCAL; + tios.c_oflag = 0; + tios.c_lflag = 0; + if (tcsetattr(sfd, TCSAFLUSH, &tios) < 0) + warn("couldn't set attributes on pty: %m"); + } else + warn("couldn't get attributes on pty: %m"); + + return 1; +} + /* * Code for locking/unlocking the serial device. * This code is derived from chat.c. diff --git a/pppd/sys-sunos4.c b/pppd/sys-sunos4.c index d0b1ac0..ea3deeb 100644 --- a/pppd/sys-sunos4.c +++ b/pppd/sys-sunos4.c @@ -26,7 +26,7 @@ */ #ifndef lint -static char rcsid[] = "$Id: sys-sunos4.c,v 1.18 1999/03/22 05:55:39 paulus Exp $"; +static char rcsid[] = "$Id: sys-sunos4.c,v 1.19 1999/04/01 07:20:11 paulus Exp $"; #endif #include @@ -1480,6 +1480,56 @@ unlock() } } +/* + * get_pty - get a pty master/slave pair and chown the slave side + * to the uid given. Assumes slave_name points to >= 12 bytes of space. + */ +int +get_pty(master_fdp, slave_fdp, slave_name, uid) + int *master_fdp; + int *slave_fdp; + char *slave_name; + int uid; +{ + int i, mfd, sfd; + char pty_name[12]; + struct termios tios; + + sfd = -1; + for (i = 0; i < 64; ++i) { + slprintf(pty_name, sizeof(pty_name), "/dev/pty%c%x", + 'p' + i / 16, i % 16); + mfd = open(pty_name, O_RDWR, 0); + if (mfd >= 0) { + pty_name[5] = 't'; + sfd = open(pty_name, O_RDWR | O_NOCTTY, 0); + if (sfd >= 0) + break; + close(mfd); + } + } + if (sfd < 0) + return 0; + + strlcpy(slave_name, pty_name, 12); + *master_fdp = mfd; + *slave_fdp = sfd; + fchown(sfd, uid, -1); + fchmod(sfd, S_IRUSR | S_IWUSR); + if (tcgetattr(sfd, &tios) == 0) { + tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB); + tios.c_cflag |= CS8 | CREAD; + tios.c_iflag = IGNPAR | CLOCAL; + tios.c_oflag = 0; + tios.c_lflag = 0; + if (tcsetattr(sfd, TCSAFLUSH, &tios) < 0) + warn("couldn't set attributes on pty: %m"); + } else + warn("couldn't get attributes on pty: %m"); + + return 1; +} + /* * SunOS doesn't have strtoul :-( */ -- 2.39.2