util/shmsweep.c


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#include "bbs.h"

int main() {
#if 0
    int i, shm, counter;
    struct utmpfile_t *utmpshm;

    
    shm = shmget(UTMPSHM_KEY, USHM_SIZE, SHM_R | SHM_W);
    if(shm == -1) {
    perror("shmget");
    exit(0);
    }
    
    utmpshm = shmat(shm, NULL, 0);
    if(utmpshm == (struct utmpfile_t *)-1) {
    perror("shmat");
    exit(0);
    }
    
    for(i = counter = 0; i < USHM_SIZE; i++)
    if(SHM->uinfo[i].pid) {
        char buf[256];
        userinfo_t *f;
        struct stat sb;
        
        f = &utmpshm->uinfo[i];
        sprintf(buf, "/proc/%d", f->pid);
        if(stat(buf, &sb)) {
        f->pid = 0;
        utmpshm->number--;
        counter++;
        }
    }
    printf("clear %d slots\n", counter);
#endif
    return 0;
}