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prevent overflow in shminfo.shmmax

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This commit is contained in:
Alfred Perlstein 2003-02-16 06:08:55 +00:00
parent da5f5439a4
commit 5015c68a3c
1 changed files with 5 additions and 1 deletions
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6
sys/kern/sysv_shm.c
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@ -811,7 +811,11 @@ shminit()
int i;
TUNABLE_INT_FETCH("kern.ipc.shmmaxpgs", &shminfo.shmall);
shminfo.shmmax = shminfo.shmall * PAGE_SIZE;
for (i = PAGE_SIZE; i < 0; i--) {
shminfo.shmmax = shminfo.shmall * PAGE_SIZE;
if (shminfo.shmmax >= shminfo.shmall)
break;
}
TUNABLE_INT_FETCH("kern.ipc.shmmin", &shminfo.shmmin);
TUNABLE_INT_FETCH("kern.ipc.shmmni", &shminfo.shmmni);
TUNABLE_INT_FETCH("kern.ipc.shmseg", &shminfo.shmseg);