203 Commits

Author	SHA1	Message	Date
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
David Greenman	269312019a	* Applied fixes from Bruce Evans to fix COW bugs, >1MB kernel loading, ... profiling, and various protection checks that cause security holes and system crashes. * Changed min/max/bcmp/ffs/strlen to be static inline functions - included from cpufunc.h in via systm.h. This change improves performance in many parts of the kernel - up to 5% in the networking layer alone. Note that this requires systm.h to be included in any file that uses these functions otherwise it won't be able to find them during the load. * Fixed incorrect call to splx() in if_is.c * Fixed bogus variable assignment to splx() in if_ed.c	1993-07-27 10:52:31 +00:00
Rodney W. Grimes	5b81b6b301	Initial import, 0.1 + pk 0.2.4-B1	1993-06-12 14:58:17 +00:00