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free_vinum: Clean out bdevsw entry before unloading kld.

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Repeatedly-tripped-over-by: Vallo Kallaste <vallo@matti.ee>

		When VINUMDEBUG is set, free any memory found still
		allocated.

		Only log errors if DEBUG_EXITFREE is set.
This commit is contained in:
grog 1999-04-05 04:02:09 +00:00
parent d3ded60147
commit d7a05d00ac
1 changed files with 21 additions and 6 deletions
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27
sys/dev/vinum/vinum.c
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@ -213,16 +213,31 @@ vinum_modevent(module_t mod, modeventtype_t type, void *unused)
#ifdef VINUMDEBUG #ifdef VINUMDEBUG
if (total_malloced) { if (total_malloced) {
int i; int i;
int *poke;
for (i = 0; i < malloccount; i++) for (i = 0; i < malloccount; i++) {
log(LOG_WARNING, if (debug & DEBUG_EXITFREE) /* want to hear about them */
"vinum: exiting with %d bytes malloced from %s:%d\n", log(LOG_WARNING,
malloced[i].size, "vinum: exiting with %d bytes malloced from %s:%d\n",
malloced[i].file, malloced[i].size,
malloced[i].line); malloced[i].file,
malloced[i].line);
#ifdef INVARIANTS
poke = &((int *) malloced[i].address)
[malloced[i].size / (2 * sizeof(int))]; /* middle of the area */
if (*poke == 0xdeadc0de) /* already freed */
log(LOG_ERR,
"vinum: exiting with malloc table inconsistency at %p from %s:%d\n",
malloced[i].address,
malloced[i].file,
malloced[i].line);
#endif
Free(malloced[i].address);
}
} }
#endif #endif
cdevsw[CDEV_MAJOR] = NULL; /* no cdevsw any more */ cdevsw[CDEV_MAJOR] = NULL; /* no cdevsw any more */
bdevsw[BDEV_MAJOR] = NULL; /* nor bdevsw */
log(LOG_INFO, "vinum: unloaded\n"); /* tell the world */ log(LOG_INFO, "vinum: unloaded\n"); /* tell the world */
return 0; return 0;
default: default: