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ext2: zero the unread bytes of a page

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Matheus
2024-05-29 11:08:21 -03:00
parent 7a2dc92657
commit 5b5d300fc1
1 changed files with 5 additions and 2 deletions
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kernel-src/fs/ext2.c
+5 -2
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@@ -1557,10 +1557,13 @@ static int ext2_unlink(vnode_t *vnode, char *name, cred_t *cred) {
static int ext2_getpage(vnode_t *node, uintmax_t offset, struct page_t *page) {
// only regular files get cached
__assert(node->type == V_TYPE_REGULAR);
size_t readc;
int error = VOP_READ(node, MAKE_HHDM(pmm_getpageaddress(page)), PAGE_SIZE, offset, 0, &readc, NULL);
size_t readc = PAGE_SIZE;
void *addr = MAKE_HHDM(pmm_getpageaddress(page));
int error = VOP_READ(node, addr, PAGE_SIZE, offset, 0, &readc, NULL);
if (readc == 0)
return ENXIO;
else if (readc != PAGE_SIZE)
memset((void *)((uintptr_t)addr + readc), 0, PAGE_SIZE - readc);
return error;
}