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Code Issues Releases Activity

NODEVFS cleanup: Remove cdevsw[].

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This implicitly removes the need for major numbers, but a number of
drivers still know things they shouldn't need to, and we need to
consider if there are applications which cache major(+minor) gleaned
from stat(2) and rely on it being constant over reboots before we
start assigning random majors.
This commit is contained in:
Poul-Henning Kamp 2003-01-29 21:54:03 +00:00
parent 4277d278d6
commit 34189c035b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=110060
1 changed files with 0 additions and 31 deletions
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31
sys/kern/kern_conf.c
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@ -40,10 +40,6 @@
#include <sys/ctype.h>
#include <machine/stdarg.h>
#ifdef NODEVFS
static struct cdevsw *cdevsw[NUMCDEVSW];
#endif
static MALLOC_DEFINE(M_DEVT, "dev_t", "dev_t storage");
/*
@ -86,11 +82,7 @@ devsw(dev_t dev)
#endif
if (dev->si_devsw)
return (dev->si_devsw);
#ifndef NODEVFS
return (NULL);
#else
return(cdevsw[major(dev)]);
#endif
}
/*
@ -100,20 +92,6 @@ devsw(dev_t dev)
int
cdevsw_add(struct cdevsw *newentry)
{
#ifdef NODEVFS
if (newentry->d_maj < 0 || newentry->d_maj >= NUMCDEVSW) {
printf("%s: ERROR: driver has bogus cdevsw->d_maj = %d\n",
newentry->d_name, newentry->d_maj);
return (EINVAL);
}
if (cdevsw[newentry->d_maj]) {
printf("WARNING: \"%s\" is usurping \"%s\"'s cdevsw[]\n",
newentry->d_name, cdevsw[newentry->d_maj]->d_name);
}
cdevsw[newentry->d_maj] = newentry;
#endif
return (0);
}
@ -125,15 +103,6 @@ cdevsw_add(struct cdevsw *newentry)
int
cdevsw_remove(struct cdevsw *oldentry)
{
#ifdef NODEVFS
if (oldentry->d_maj < 0 || oldentry->d_maj >= NUMCDEVSW) {
printf("%s: ERROR: driver has bogus cdevsw->d_maj = %d\n",
oldentry->d_name, oldentry->d_maj);
return EINVAL;
}
cdevsw[oldentry->d_maj] = NULL;
#endif
return 0;
}