mirrors/Astral
1
0
Fork 0
mirror of https://github.com/Mathewnd/Astral.git synced 2026-11-01 23:18:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

ext2: zero the unread bytes of a page

Browse Source
This commit is contained in:
Matheus
2024-05-29 11:08:21 -03:00
parent 7a2dc92657
commit 5b5d300fc1
1 changed files with 5 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel-src/fs/ext2.c
+5 -2
View File
@@ -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) { static int ext2_getpage(vnode_t *node, uintmax_t offset, struct page_t *page) {
// only regular files get cached // only regular files get cached
__assert(node->type == V_TYPE_REGULAR); __assert(node->type == V_TYPE_REGULAR);
size_t readc; size_t readc = PAGE_SIZE;
int error = VOP_READ(node, MAKE_HHDM(pmm_getpageaddress(page)), PAGE_SIZE, offset, 0, &readc, NULL); void *addr = MAKE_HHDM(pmm_getpageaddress(page));
int error = VOP_READ(node, addr, PAGE_SIZE, offset, 0, &readc, NULL);
if (readc == 0) if (readc == 0)
return ENXIO; return ENXIO;
else if (readc != PAGE_SIZE)
memset((void *)((uintptr_t)addr + readc), 0, PAGE_SIZE - readc);
return error; return error;
} }