diff options
| author | ache <ache@FreeBSD.org> | 1994-01-02 10:17:29 +0000 |
|---|---|---|
| committer | ache <ache@FreeBSD.org> | 1994-01-02 10:17:29 +0000 |
| commit | 44196ffe13e5376b5162406170953832ebc8a828 (patch) | |
| tree | 765a9ef6c67de02a012e2b3c1ebcc3d3d3a6b0b3 | |
| parent | dc0d9c2d73e23a1c5330c00d7f6dc652edbffcdc (diff) | |
| download | FreeBSD-src-44196ffe13e5376b5162406170953832ebc8a828.zip FreeBSD-src-44196ffe13e5376b5162406170953832ebc8a828.tar.gz | |
Temporary plug CLOCAL security hole, while sticky bits
yet not implemented. Only for bidirectional case.
| -rw-r--r-- | sys/dev/sio/sio.c | 12 | ||||
| -rw-r--r-- | sys/i386/isa/sio.c | 12 | ||||
| -rw-r--r-- | sys/isa/sio.c | 12 |
3 files changed, 33 insertions, 3 deletions
diff --git a/sys/dev/sio/sio.c b/sys/dev/sio/sio.c index 1311367..8081ae5 100644 --- a/sys/dev/sio/sio.c +++ b/sys/dev/sio/sio.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * from: @(#)com.c 7.5 (Berkeley) 5/16/91 - * $Id: sio.c,v 1.19 1993/12/13 13:20:50 davidg Exp $ + * $Id: sio.c,v 1.20 1993/12/16 04:38:27 ache Exp $ */ #include "sio.h" @@ -1034,6 +1034,16 @@ sioioctl(dev, cmd, data, flag, p) iobase = com->iobase; s = spltty(); + +#ifdef COM_BIDIR + /* XXX: plug security hole while stucky bits not yet implemented */ + + if (com->bidir && com->active_in && p->p_ucred->cr_uid != 0) { + tp->t_cflag |= HUPCL; + tp->t_cflag &= ~CLOCAL; + } +#endif + switch (cmd) { case TIOCSBRK: outb(iobase + com_cfcr, com->cfcr_image |= CFCR_SBREAK); diff --git a/sys/i386/isa/sio.c b/sys/i386/isa/sio.c index 1311367..8081ae5 100644 --- a/sys/i386/isa/sio.c +++ b/sys/i386/isa/sio.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * from: @(#)com.c 7.5 (Berkeley) 5/16/91 - * $Id: sio.c,v 1.19 1993/12/13 13:20:50 davidg Exp $ + * $Id: sio.c,v 1.20 1993/12/16 04:38:27 ache Exp $ */ #include "sio.h" @@ -1034,6 +1034,16 @@ sioioctl(dev, cmd, data, flag, p) iobase = com->iobase; s = spltty(); + +#ifdef COM_BIDIR + /* XXX: plug security hole while stucky bits not yet implemented */ + + if (com->bidir && com->active_in && p->p_ucred->cr_uid != 0) { + tp->t_cflag |= HUPCL; + tp->t_cflag &= ~CLOCAL; + } +#endif + switch (cmd) { case TIOCSBRK: outb(iobase + com_cfcr, com->cfcr_image |= CFCR_SBREAK); diff --git a/sys/isa/sio.c b/sys/isa/sio.c index 1311367..8081ae5 100644 --- a/sys/isa/sio.c +++ b/sys/isa/sio.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * from: @(#)com.c 7.5 (Berkeley) 5/16/91 - * $Id: sio.c,v 1.19 1993/12/13 13:20:50 davidg Exp $ + * $Id: sio.c,v 1.20 1993/12/16 04:38:27 ache Exp $ */ #include "sio.h" @@ -1034,6 +1034,16 @@ sioioctl(dev, cmd, data, flag, p) iobase = com->iobase; s = spltty(); + +#ifdef COM_BIDIR + /* XXX: plug security hole while stucky bits not yet implemented */ + + if (com->bidir && com->active_in && p->p_ucred->cr_uid != 0) { + tp->t_cflag |= HUPCL; + tp->t_cflag &= ~CLOCAL; + } +#endif + switch (cmd) { case TIOCSBRK: outb(iobase + com_cfcr, com->cfcr_image |= CFCR_SBREAK); |
