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Added support for EXEC type modules.

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This commit is contained in:
sos 1994-09-25 08:51:07 +00:00
parent 420ecd1647
commit 64d698fbe9
1 changed files with 18 additions and 17 deletions

35
sys/kern/kern_lkm.c

@ -787,8 +787,11 @@ _lkm_exec(lkmtp, cmd)
struct lkm_exec *args = lkmtp->private.lkm_exec;
int i;
int err = 0;
extern const struct linker_set execsw_set;
const struct execsw **execsw =
(const struct execsw **)&execsw_set.ls_items[0];
#if 0
#if 1
switch(cmd) {
case LKM_E_LOAD:
/* don't load twice! */
@ -798,29 +801,24 @@ _lkm_exec(lkmtp, cmd)
/*
* Search the table looking for a slot...
*/
for (i = 0; i < nexecs; i++)
if (execsw[i].es_check == NULL)
for (i = 0; execsw[i] != NULL; i++)
if (execsw[i]->ex_imgact == NULL)
break; /* found it! */
/* out of allocable slots? */
if (i == nexecs) {
if (execsw[i] == NULL) {
err = ENFILE;
break;
}
} else { /* assign */
if (i < 0 || i >= nexecs) {
err = EINVAL;
break;
}
err = EINVAL;
break;
}
/* save old */
bcopy(&execsw[i], &(args->lkm_oldexec), sizeof(struct execsw));
bcopy(&execsw[i], &(args->lkm_oldexec), sizeof(struct execsw*));
/* replace with new */
bcopy(args->lkm_exec, &execsw[i], sizeof(struct execsw));
/* realize need to recompute max header size */
exec_maxhdrsz = 0;
bcopy(&(args->lkm_exec), &execsw[i], sizeof(struct execsw*));
/* done! */
args->lkm_offset = i; /* slot in execsw[] */
@ -832,10 +830,7 @@ _lkm_exec(lkmtp, cmd)
i = args->lkm_offset;
/* replace current slot contents with old contents */
bcopy(&(args->lkm_oldexec), &execsw[i], sizeof(struct execsw));
/* realize need to recompute max header size */
exec_maxhdrsz = 0;
bcopy(&(args->lkm_oldexec), &execsw[i], sizeof(struct execsw*));
break;
@ -848,6 +843,12 @@ _lkm_exec(lkmtp, cmd)
return(err);
}
static const struct execsw lkm_exec_dummy = { NULL, "lkm" };
TEXT_SET(execsw_set, lkm_exec_dummy);
TEXT_SET(execsw_set, lkm_exec_dummy);
TEXT_SET(execsw_set, lkm_exec_dummy);
TEXT_SET(execsw_set, lkm_exec_dummy);
/*
* This code handles the per-module type "wiring-in" of loadable modules
* into existing kernel tables. For "LM_MISC" modules, wiring and unwiring