Files
my-os-project2/kernel/storedev/storedev.c

58 lines
1.3 KiB
C

#include <stdint.h>
#include <stddef.h>
#include "storedev.h"
#include "spinlock/spinlock.h"
#include "kprintf.h"
#include "errors.h"
#include "dlmalloc/malloc.h"
#include "ramsd.h"
#include "util/util.h"
StoreDevList STOREDEV_LIST;
void storedev_init(void) {
spinlock_init(&STOREDEV_LIST.spinlock);
STOREDEV_LIST.head = NULL;
LOG("storedev", "init\n");
}
StoreDev *storedev_create(int32_t sdtype, void *extra) {
StoreDev *sd = dlmalloc(sizeof(*sd));
if (sd == NULL) {
return NULL;
}
spinlock_acquire(&STOREDEV_LIST.spinlock);
switch (sdtype) {
case STOREDEV_RAMSD: {
spinlock_init(&sd->spinlock);
sd->sdtype = STOREDEV_RAMSD;
sd->init = &ramsd_init;
sd->cleanup = &ramsd_cleanup;
sd->read = &ramsd_read;
sd->write = &ramsd_write;
int32_t err = sd->init(sd, extra);
if (err != E_OK) {
spinlock_release(&STOREDEV_LIST.spinlock);
return NULL;
}
LL_APPEND(STOREDEV_LIST.head, sd);
} break;
default:
spinlock_release(&STOREDEV_LIST.spinlock);
return NULL;
}
spinlock_release(&STOREDEV_LIST.spinlock);
return sd;
}
int32_t storedev_delete(StoreDev *sd) {
spinlock_acquire(&STOREDEV_LIST.spinlock);
LL_REMOVE(STOREDEV_LIST.head, sd);
int32_t err = sd->cleanup(sd);
spinlock_release(&STOREDEV_LIST.spinlock);
}