Andrew Moore 5bb374bc76 patch 1of2 to prevent kill -1 syslogd from hanging the console ... blindly applied patch provided by Christoph Robitschko: *** cons.c.orig Sat Jun 12 07:57:53 1993 --- cons.c Thu Aug 19 22:34:53 1993 *************** *** 56,61 **** --- 56,62 ---- #include "sys/tty.h" #include "sys/file.h" #include "sys/conf.h" + #include "sys/vnode.h" #include "cons.h" *************** *** 105,118 **** --- 106,130 ---- (*cp->cn_init)(cp); } + static struct vnode *cnopenvp = NULLVP; + + cnopen(dev, flag, mode, p) dev_t dev; int flag, mode; struct proc *p; { + int error; + + if (cn_tab == NULL) return (0); dev = cn_tab->cn_dev; + if (cnopenvp == NULLVP) + if ((error = getdevvp(dev, &cnopenvp, VCHR))) { + printf("cnopen: getdevvp returned %d !\n", error); + return(error); + } return ((*cdevsw[major(dev)].d_open)(dev, flag, mode, p)); } *************** *** 121,130 **** int flag, mode; struct proc *p; { if (cn_tab == NULL) return (0); dev = cn_tab->cn_dev; ! return ((*cdevsw[major(dev)].d_close)(dev, flag, mode, p)); } cnread(dev, uio, flag) --- 133,153 ---- int flag, mode; struct proc *p; { + int error; + + if (cn_tab == NULL) return (0); dev = cn_tab->cn_dev; ! if (vcount(cnopenvp) <= 1) ! error = (*cdevsw[major(dev)].d_close)(dev, flag, mode, p); ! else ! error = 0; ! if (error == 0) { ! vrele(cnopenvp); ! cnopenvp = NULLVP; ! return(error); ! } } cnread(dev, uio, flag)		1993-08-20 05:46:09 +00:00
..
subr_rlist.c
subr_trap.c	* Applied fixes from Bruce Evans to fix COW bugs, >1MB kernel loading,	1993-07-27 10:52:31 +00:00
tty_cons.c	patch 1of2 to prevent kill -1 syslogd from hanging the console	1993-08-20 05:46:09 +00:00